LEDs are widely used in every lighting industries because of their energy saving, long lifespan, and environmentally friendly. However, there are 5 external factors will shorten their service life.
1. Drive current: The rated voltage and rated current of the LED lights are unchangeable. Therefore, there are different sizes of LED power supplies on the market, and the most common are 12V and 24V DC drive power supplies. For most of the constant voltage LED tape lights currently on the market, the output voltage and power of the power supply must be appropriate, otherwise, it may reduce the life or even damage the LED lights.
2. Corrosive environment: In some areas with serious pollution or in some chemical manufacturing plants, it is best to use LED lamps with protective devices to avoid damage caused by contact with corrosive materials.
3. Operating temperature: The temperature will affect the light decay and service life of the LED. Generally, LED lights are used at temperatures ranging from -20 ° C to 65 ° C. Excessively high or low temperatures will affect the work of lights. In order to avoid the light decay that caused by high temperature, it normally increases the heat dissipation area or installs the active heat sinks.
4. External force: During installation or use, the collision of hard objects or sharp objects will cause the LED to be damaged or even completely destroyed. Therefore, the LED light should be installed as far as possible in a place that is difficult to reach.
5. Humid environment: Whether it is production, storage or use, the LED should be avoided in a humid environment, because the moisture can easily cause the LED to be wet and the short circuit.
These are the five major external factors that affect the life of LED lights. If you have other questions about LED lighting, please feel free to contact us. We are a manufacturer of LED lights in China, specializing in the production of LED light strips and LED plant lights.
2018年12月28日星期五
LED grow lights help a Swedish farm overcome difficult weather conditions
A Swedish agricultural company, Ljusgarda AB, spent 1.3 million kronor to purchase LED lighting solutions from Heliospectr, known for its intelligent LED lighting systems in plant science and horticulture.
Ljusgarda AB converted a Swedish old factory into an indoor vertical farm with an area of 7,000-square-meter, its estimated annual production is 1,000 tons. Through the introduction of advanced hydroponic cultivation techniques and efficient LED plant lighting, the factory is able to achieve stable output throughout the year and guarantee high quality. Thanks to the closed growing environment, the crop does not require any pesticides, which further guarantees pollution-free production.
In a closed environment, LED plant lights, as the main source of light, play a very important role in plant growth due to the lack of sunlight. And because the spectrum and color ratio of LED lights can be customized according to different plants, growers can use specific LED agricultural lighting according to different plants to achieve the best results.
Ljusgarda has created an optimal indoor environment with LED grow lights and other breeding systems to keep crop production free from adverse weather conditions and achieve high quality and high output throughout the year.
Ljusgarda AB converted a Swedish old factory into an indoor vertical farm with an area of 7,000-square-meter, its estimated annual production is 1,000 tons. Through the introduction of advanced hydroponic cultivation techniques and efficient LED plant lighting, the factory is able to achieve stable output throughout the year and guarantee high quality. Thanks to the closed growing environment, the crop does not require any pesticides, which further guarantees pollution-free production.
In a closed environment, LED plant lights, as the main source of light, play a very important role in plant growth due to the lack of sunlight. And because the spectrum and color ratio of LED lights can be customized according to different plants, growers can use specific LED agricultural lighting according to different plants to achieve the best results.
Ljusgarda has created an optimal indoor environment with LED grow lights and other breeding systems to keep crop production free from adverse weather conditions and achieve high quality and high output throughout the year.
2018年12月25日星期二
How to develop in the future in the era of LED healthy lighting
LED healthy lighting has been proposed by the market in 2015 for three years. In the past two years, LED healthy lighting is still in its infancy.
With the continuous advancement and popularization of technology, the number of manufacturers involved in healthy lighting has increased in 2018, and a lot of traditional LED strip suppliers have gradually joined the camp. With the further improvement of technology and further cost reduction, LED lighting will quickly enter the era of healthy lighting.
LED health lighting refers to the light emitted by LED products that do not cause harm to the human body, especially for eyes. However, most of the LED strip factories are more focus on improving light efficiency and reducing costs. Some inferior products, short-wave blue light specific gravity, which will lead to visual fatigue, causing vision loss.
Illumination has expanded into the field of non-visual biological effects. Many studies have shown that the non-visual effect of light, the light perceived by the ganglion cells of the retina can affect the release of melatonin, sleep, and biorhythm at night. In other words, the influence of light on humans is not only the influence of the direct visual sensory system but also on other non-visual sensory systems.
Sunlight is the most suitable and most comfortable light source for human beings. The current LED health lighting is also the maximum imitating natural light. At present, there are two ways to reach the full-spectrum light source in the market. The first is a blue chip to stimulate the phosphor, and the other one is a violet chip to stimulate the RGB multi-color phosphor. The R2835FS series of LED strip lights launched by MLDR CO., LTD., its spectrum is very close to the natural spectrum.
LED healthy lighting is not only the manufacture of LED lights but also the study of the relationship between light and human health.
Although there is still a long way to go, with the close cooperation of various area, LED health lighting will have a great future. For LED strip manufacturers, more attention should be paid to the development of LED healthy lighting.
With the continuous advancement and popularization of technology, the number of manufacturers involved in healthy lighting has increased in 2018, and a lot of traditional LED strip suppliers have gradually joined the camp. With the further improvement of technology and further cost reduction, LED lighting will quickly enter the era of healthy lighting.
LED health lighting refers to the light emitted by LED products that do not cause harm to the human body, especially for eyes. However, most of the LED strip factories are more focus on improving light efficiency and reducing costs. Some inferior products, short-wave blue light specific gravity, which will lead to visual fatigue, causing vision loss.
Illumination has expanded into the field of non-visual biological effects. Many studies have shown that the non-visual effect of light, the light perceived by the ganglion cells of the retina can affect the release of melatonin, sleep, and biorhythm at night. In other words, the influence of light on humans is not only the influence of the direct visual sensory system but also on other non-visual sensory systems.
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| 2835 Full spectrum LED strip lights |
Sunlight is the most suitable and most comfortable light source for human beings. The current LED health lighting is also the maximum imitating natural light. At present, there are two ways to reach the full-spectrum light source in the market. The first is a blue chip to stimulate the phosphor, and the other one is a violet chip to stimulate the RGB multi-color phosphor. The R2835FS series of LED strip lights launched by MLDR CO., LTD., its spectrum is very close to the natural spectrum.
LED healthy lighting is not only the manufacture of LED lights but also the study of the relationship between light and human health.
Although there is still a long way to go, with the close cooperation of various area, LED health lighting will have a great future. For LED strip manufacturers, more attention should be paid to the development of LED healthy lighting.
2018年12月23日星期日
Which is better for LED grow lights and HPS lights?
New agricultural facilities such as greenhouses, plant factories, and vertical farms play an extremely important role in the development of modern agriculture. In order to avoid the adverse effects of weather and increase the yield, artificial lighting is used for plant supplement lighting. After years of development, LED grow lights have become the most important light source in agricultural lighting. Because of the lower price and high light efficiency, the high-pressure sodium (HPS) lamps still have a certain market share. The following is a comparison of the two most common agricultural lights currently on the market.
1. The HPS light is composed of mercury, sodium, neon arc tube wick, glass bulb, and getter lamp head. HPS lights of different powers need to use ballasts of corresponding specifications. The LED is also called a light-emitting diode, and the core portion is a wafer composed of a P-type semiconductor and an N-type semiconductor.
2. The HPS lamp tube has an illumination angle of 360°, and most of the light must be reflected by the reflector to reach the designated area. The spectral energy distribution is roughly red-orange, yellow-green, and blue-violet (only a small part). The LED light source has wavelength tunability, and can emit monochromatic light with narrow light waves, such as infrared, red, orange, yellow, green, blue, etc., and can be arbitrarily combined according to different needs.
3. The life of the HPS light is about 20,000 hours, which generates a lot of heat during work. As a semiconductor light source, LED grow lights can last up to 50,000 hours and produce relatively little heat, which can be installed close to crops.
4. Studies have shown that the gas exchange, chlorophyll content, accumulation of photosynthetic pigments, and transpiration rate are higher under LED lighting. The special spectral ratio of LEDs can also be used for the different growth of plants.
The advantages of HPS lights and LED lights are significant compared to other light sources. The initial investment cost of LED is higher than that of HPS lamps, but the overall cost is lower. And with the development of LED technology, the production cost of LED grow lights will further decrease.
1. The HPS light is composed of mercury, sodium, neon arc tube wick, glass bulb, and getter lamp head. HPS lights of different powers need to use ballasts of corresponding specifications. The LED is also called a light-emitting diode, and the core portion is a wafer composed of a P-type semiconductor and an N-type semiconductor.
2. The HPS lamp tube has an illumination angle of 360°, and most of the light must be reflected by the reflector to reach the designated area. The spectral energy distribution is roughly red-orange, yellow-green, and blue-violet (only a small part). The LED light source has wavelength tunability, and can emit monochromatic light with narrow light waves, such as infrared, red, orange, yellow, green, blue, etc., and can be arbitrarily combined according to different needs.
3. The life of the HPS light is about 20,000 hours, which generates a lot of heat during work. As a semiconductor light source, LED grow lights can last up to 50,000 hours and produce relatively little heat, which can be installed close to crops.
4. Studies have shown that the gas exchange, chlorophyll content, accumulation of photosynthetic pigments, and transpiration rate are higher under LED lighting. The special spectral ratio of LEDs can also be used for the different growth of plants.
The advantages of HPS lights and LED lights are significant compared to other light sources. The initial investment cost of LED is higher than that of HPS lamps, but the overall cost is lower. And with the development of LED technology, the production cost of LED grow lights will further decrease.
2018年12月20日星期四
What are the factors that affect the life of LED strips?
LED light strips are widely used in various places for their long life, easy installation, and energy saving. The long lifespan is the most representative parameter. Therefore, the service life of the LED light box light bar has become one of the most concerned issues in the industry. Whether it is for the LED light bar manufacturers or users, it is necessary to understand the factors affecting the life of the LED strip lights. There are three main factors that affect the life of the LED strips:
1. The quality of the lamp bead directly affects the service life of the LED strip. The LED is composed of a variety of materials, and the quality of each material is totally different. For example, the heat dissipation of the pure copper bracket is superior to that of the iron bracket and the aluminum bracket. The materials vary widely, and the connecting wires are also divided into gold wires and gold-plated wires. Therefore, the quality of the LED is inseparable from the quality of the raw materials used. A good and stable LED is inevitably the most stable combination of various materials. The theoretical lifespan of LED strip lights can reach more than 50,000 hours. However, due to improper competition in the market, some packaging factories have chosen the inferior raw materials in order to reduce costs, thus greatly affecting the service life of LED strips.
2. The service life of LED light box light strip is closely related to the heat dissipation of PCB. The heat dissipation performance of PCB directly affects the series of common problems such as whether the material structure of LED light strip is stable and the light decay is serious. Therefore, whether to use a high thermal conductivity PCB also plays a very important role in the service life of the LED lights.
3. When the driving current of the LED light box light bar is greater than the rated current, the light decay will be increased. The lower the driving current of the LED light box light bar, the smaller the heat, the lower the brightness. Increasing the drive current exceed the rated current, the heat of the LED light box light bar rises, which will shorten the service life.
The above is a brief description of the factors affecting the lifespan of LED strips. If you have any questions and requirements about LED lighting, please contact us without hesitate. As a China LED strip lights manufacturer, we are committed to creating win-win cooperation with our customers.
1. The quality of the lamp bead directly affects the service life of the LED strip. The LED is composed of a variety of materials, and the quality of each material is totally different. For example, the heat dissipation of the pure copper bracket is superior to that of the iron bracket and the aluminum bracket. The materials vary widely, and the connecting wires are also divided into gold wires and gold-plated wires. Therefore, the quality of the LED is inseparable from the quality of the raw materials used. A good and stable LED is inevitably the most stable combination of various materials. The theoretical lifespan of LED strip lights can reach more than 50,000 hours. However, due to improper competition in the market, some packaging factories have chosen the inferior raw materials in order to reduce costs, thus greatly affecting the service life of LED strips.
2. The service life of LED light box light strip is closely related to the heat dissipation of PCB. The heat dissipation performance of PCB directly affects the series of common problems such as whether the material structure of LED light strip is stable and the light decay is serious. Therefore, whether to use a high thermal conductivity PCB also plays a very important role in the service life of the LED lights.
3. When the driving current of the LED light box light bar is greater than the rated current, the light decay will be increased. The lower the driving current of the LED light box light bar, the smaller the heat, the lower the brightness. Increasing the drive current exceed the rated current, the heat of the LED light box light bar rises, which will shorten the service life.
The above is a brief description of the factors affecting the lifespan of LED strips. If you have any questions and requirements about LED lighting, please contact us without hesitate. As a China LED strip lights manufacturer, we are committed to creating win-win cooperation with our customers.
2018年12月19日星期三
A plant factory combines natural light and LED grow lights have been built in Beijing
The largest sunlight and LED grow lights combination plant factory has been built in Beijing by Jingdong, which has a total area of more than 10,000 square meters. With the help of the combined lighting system, cultivate system and temperature control system, the factory will be in the most suitable environment all years round.
Due to the adoption of the latest technologies, the yield is 3 to 4 times than other traditional greenhouses, and more than 90% of the water is saved. Moreover, the factory maximizes the use of natural light rather than relying on LED grow lighting, which further reduces energy consumption.
It is reported that the vegetable will be sold simultaneously on the Jingdong's online and offline markets.
Due to the adoption of the latest technologies, the yield is 3 to 4 times than other traditional greenhouses, and more than 90% of the water is saved. Moreover, the factory maximizes the use of natural light rather than relying on LED grow lighting, which further reduces energy consumption.
It is reported that the vegetable will be sold simultaneously on the Jingdong's online and offline markets.
2018年12月16日星期日
How to install the LED light strips in the light boxes?
The arrangement of the LED strip lights is really important to the whole lightbox's lighting effect. If the configuration is improper, there will be problems such uneven light effect. The configuration of the LED light bar is determined according to the different occasions, different brightness requirements, and sizes of the lightbox. The following is a brief introduction of how to configure the LED light bar.
The small light boxes are mainly used in largely residential areas, shopping centers, supermarkets, schools, entertainment and leisure places, etc. For the small lightbox, since the size of the lightbox is small, and the requirement for brightness is relatively low, it is only necessary to arrange the light bars up and down or left and right to form up and down, left and right pairs of light. The installation is very simple and convenient.
The application places of large light boxes are mainly distributed on streets, large shopping malls, hospitals, exhibitions, commercial downtown, stations, airports, parks, etc. Because the size and thickness of the light boxes are different, it's recommended to use LED strip backlighting. The LED strips are characterized by a very flexible size, which can meet different lightbox sizes, different brightness requirements, and different application scenarios.
According to the thickness and brightness requirements of the lightbox, the number of light bars and the distance between the strips are different. The higher requirement of brightness, the number of light bars should be increased or the high brightness LEDs should be selected. Similarly, the thinner the lightbox, the more LED strips are required.
The above is a brief description of how to install the LED light bar. If you need more detailed LED lights information, please visit our official web.
The small light boxes are mainly used in largely residential areas, shopping centers, supermarkets, schools, entertainment and leisure places, etc. For the small lightbox, since the size of the lightbox is small, and the requirement for brightness is relatively low, it is only necessary to arrange the light bars up and down or left and right to form up and down, left and right pairs of light. The installation is very simple and convenient.
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| LED curtain strip lights in lightbox |
The application places of large light boxes are mainly distributed on streets, large shopping malls, hospitals, exhibitions, commercial downtown, stations, airports, parks, etc. Because the size and thickness of the light boxes are different, it's recommended to use LED strip backlighting. The LED strips are characterized by a very flexible size, which can meet different lightbox sizes, different brightness requirements, and different application scenarios.
According to the thickness and brightness requirements of the lightbox, the number of light bars and the distance between the strips are different. The higher requirement of brightness, the number of light bars should be increased or the high brightness LEDs should be selected. Similarly, the thinner the lightbox, the more LED strips are required.
The above is a brief description of how to install the LED light bar. If you need more detailed LED lights information, please visit our official web.
2018年12月13日星期四
The world's first underground fully automatic LED lighting plant factory
The use of artificial lighting and nutrient solutions to grow leafy vegetables is no longer a new thing, and many Japanese companies use the waste factory to plant vegetables. A plant factory in Chiba Prefecture, near Tokyo, differs in that the boxes from which the seedlings are grown are transported to the plant factories in the underground space, and the vegetables that are finally grown are sent to the ground by conveyor belts to achieve full automation. Planting vegetables.
This is the world's first underground fully automated plant factory, located in an idle underground municipal complex. The top of the underground tunnel of about 3.1 kilometers is about 5 meters from the ground, the interior is 6 meters to 8 meters wide, and the height is about 4 meters. It was first built in 1995. It was originally planned to be used in the local municipal integrated pipe network and was left unused. Ito Electric Co., Ltd., which develops automation equipment, cooperates with the Chiba Prefecture Corporate Land Administration to utilize this idle underground tunnel. In December 2017, this unique plant factory was built.
According to Okada Akira, head of the Plant Factory Development Headquarters of Ito Electric Co., Ltd., starting from December 2017, the plant factory began to test and cultivate 200 vegetables per day, including leafy vegetables such as lettuce and edible flowers. According to the plan, by 2020, the factory can enter the mass production period and produce 2,500 per day. By 2022, the daily output will be further expanded to 5,000. By then, the underground plant area will reach approximately 3,200 square meters, and the above-ground working area will reach approximately 600 square meters.
It is reported that part of the tunnel has been opened up as a fully enclosed plant growing area with an area of about 120 square meters. Through the plastic wall curtain, some vegetables such as lettuce can be seen layered inside.
According to Okada Akira, the plant has been fully automated. After cultivating the seedlings on the ground, the modular vegetable box is sent underground through the conveyor belt. The LED light and nutrient solution transport in the underground plant can be completed automatically. The underground plant factory can be transported to the ground for sale after 24 days of cultivation.
The staff also brought freshly harvested lettuce to the reporter for tasting. Due to the complete cultivation in a non-polluting environment, these lettuces can be eaten directly without washing, and the taste is also very good.
Okada Akira said that the price of vegetables produced at this plant is now the same as that of ordinary lettuce, and there is room for further cost reduction in the future. When the daily output reaches 5,000, the ground only needs about 10 staff for seedling, harvesting and equipment maintenance. In the future, they plan to develop more automation equipment, with the goal of reducing costs by 20% to 30%.
According to Toshihiko, the deputy director of the Chiba County Enterprise Land Administration, plant factories usually need to consume a lot of electricity for temperature control and lighting, but this plant is set up in an underground tunnel, constant temperature and humidity throughout the year, which can save a lot of air-conditioning electricity costs. . In addition, due to the close proximity to the consumer market, the vegetables produced do not need to be transported over long distances, saving a lot of logistics costs.
This is the world's first underground fully automated plant factory, located in an idle underground municipal complex. The top of the underground tunnel of about 3.1 kilometers is about 5 meters from the ground, the interior is 6 meters to 8 meters wide, and the height is about 4 meters. It was first built in 1995. It was originally planned to be used in the local municipal integrated pipe network and was left unused. Ito Electric Co., Ltd., which develops automation equipment, cooperates with the Chiba Prefecture Corporate Land Administration to utilize this idle underground tunnel. In December 2017, this unique plant factory was built.
According to Okada Akira, head of the Plant Factory Development Headquarters of Ito Electric Co., Ltd., starting from December 2017, the plant factory began to test and cultivate 200 vegetables per day, including leafy vegetables such as lettuce and edible flowers. According to the plan, by 2020, the factory can enter the mass production period and produce 2,500 per day. By 2022, the daily output will be further expanded to 5,000. By then, the underground plant area will reach approximately 3,200 square meters, and the above-ground working area will reach approximately 600 square meters.
It is reported that part of the tunnel has been opened up as a fully enclosed plant growing area with an area of about 120 square meters. Through the plastic wall curtain, some vegetables such as lettuce can be seen layered inside.
According to Okada Akira, the plant has been fully automated. After cultivating the seedlings on the ground, the modular vegetable box is sent underground through the conveyor belt. The LED light and nutrient solution transport in the underground plant can be completed automatically. The underground plant factory can be transported to the ground for sale after 24 days of cultivation.
The staff also brought freshly harvested lettuce to the reporter for tasting. Due to the complete cultivation in a non-polluting environment, these lettuces can be eaten directly without washing, and the taste is also very good.
Okada Akira said that the price of vegetables produced at this plant is now the same as that of ordinary lettuce, and there is room for further cost reduction in the future. When the daily output reaches 5,000, the ground only needs about 10 staff for seedling, harvesting and equipment maintenance. In the future, they plan to develop more automation equipment, with the goal of reducing costs by 20% to 30%.
According to Toshihiko, the deputy director of the Chiba County Enterprise Land Administration, plant factories usually need to consume a lot of electricity for temperature control and lighting, but this plant is set up in an underground tunnel, constant temperature and humidity throughout the year, which can save a lot of air-conditioning electricity costs. . In addition, due to the close proximity to the consumer market, the vegetables produced do not need to be transported over long distances, saving a lot of logistics costs.
2018年12月11日星期二
What cause dead LEDs on LED strip lights
Sometimes there will be dark areas in the light boxes. When you open the canvas, there are several LEDs on the LED light strips. After using for a while, there are several LEDs can't work, which is the phenomenon of dead LEDs that people in the industry say. So what are the reasons for the dead LEDs?
Firstly, the quality of the LED lights is the direct cause of the dead LEDs. The use of inferior lamp beads will greatly increase the chance of dead LEDs of LED light bars. LEDs are composed of various materials, such as brackets, chips, wires, glues, etc. If any of these materials are low quality may cause LEDs to die prematurely.
Secondly, a LED or line on the serial-parallel circuit board is disconnected, causing the other LEDs to be off. This situation will affect the normal operation of the whole segment of the led lights. The reason is that due to the low working voltage of the led lamp, it is generally necessary to use string and parallel connection to adapt to different working voltages. The more LED lamps in series, the greater the impact, as long as one of the LEDs or one of the lines in this LED strip is disconnected, which will cause the entire LED light fixture.
Moreover, the wiring error also will cause the LED lights to burn out. If the LED low voltage tape lights are directly connected to 220V AC power will damage the lights. If the power supply is correct but the lights are not working, it may be because the positive and negative poles being reversed.
The last reason is that the physical damage during packaging, transportation, and installation. In the packaging, transportation, and installation of the LED light strip, various physical damages occur, causing the dead LED.
Firstly, the quality of the LED lights is the direct cause of the dead LEDs. The use of inferior lamp beads will greatly increase the chance of dead LEDs of LED light bars. LEDs are composed of various materials, such as brackets, chips, wires, glues, etc. If any of these materials are low quality may cause LEDs to die prematurely.
Secondly, a LED or line on the serial-parallel circuit board is disconnected, causing the other LEDs to be off. This situation will affect the normal operation of the whole segment of the led lights. The reason is that due to the low working voltage of the led lamp, it is generally necessary to use string and parallel connection to adapt to different working voltages. The more LED lamps in series, the greater the impact, as long as one of the LEDs or one of the lines in this LED strip is disconnected, which will cause the entire LED light fixture.
Moreover, the wiring error also will cause the LED lights to burn out. If the LED low voltage tape lights are directly connected to 220V AC power will damage the lights. If the power supply is correct but the lights are not working, it may be because the positive and negative poles being reversed.
The last reason is that the physical damage during packaging, transportation, and installation. In the packaging, transportation, and installation of the LED light strip, various physical damages occur, causing the dead LED.
2018年12月9日星期日
Abandoned mine + LED grow lights + other systems = vertical farms
The reduction of waste coal has become a global environmental consensus, so more and more coal mines will be closed in the future. Scholars at the University of Nottingham are beginning to think about the future use of waste mines. They propose vertical farms. The concept is that a mine is a ready-made greenhouse that can be turned into a fully functional farm with the addition of LED lighting and irrigation systems.
According to reports, scholars believe that deep farms have some obvious advantages: they are not affected by the weather, and the temperature of the ground floor does not change much, and expensive temperature control equipment is not needed. Safa of the University of Nottingham said: Tunnels and shafts do not need heating equipment, and even if they do, they consume less electricity, so they are very attractive for food production. We designed a central shaft for mounting robots. With these robotic arms to take care of the crops and harvest, the entire system costs only about $38,000 to build, and then the operating costs are lower. The LED plant grow lighting system does not consume much electricity.
Vertical farms are suitable for vegetables and fruits with short growth cycles, such as spinach, kale, basil, mint, strawberries, mushrooms, carrots, eggplants, etc. Their trials show that a small well-type small farm can produce 80 tons of crops per year. Moreover, production is not affected by the seasons and can reach 10 crop cycles per year, while British outdoor farms only have 4 to 6 times.
According to reports, scholars believe that deep farms have some obvious advantages: they are not affected by the weather, and the temperature of the ground floor does not change much, and expensive temperature control equipment is not needed. Safa of the University of Nottingham said: Tunnels and shafts do not need heating equipment, and even if they do, they consume less electricity, so they are very attractive for food production. We designed a central shaft for mounting robots. With these robotic arms to take care of the crops and harvest, the entire system costs only about $38,000 to build, and then the operating costs are lower. The LED plant grow lighting system does not consume much electricity.
Vertical farms are suitable for vegetables and fruits with short growth cycles, such as spinach, kale, basil, mint, strawberries, mushrooms, carrots, eggplants, etc. Their trials show that a small well-type small farm can produce 80 tons of crops per year. Moreover, production is not affected by the seasons and can reach 10 crop cycles per year, while British outdoor farms only have 4 to 6 times.
2018年12月6日星期四
Where are the LED strips used
Many houses now use LED strips as decorative light sources because they are affordable, easy to install, and environmentally friendly. In addition to home lighting, light strips are used in a variety of applications. The following is a brief introduction to the main application areas of the light bar.
LED strips generally have two types of hard strips and flex strips, both of which are mounted on copper or strip-shaped boards. As the main advertising lighting, commercial lighting and decorative lighting fixtures, LED strips have been widely used in buildings, bridges, roads, gardens, courtyards, floors, ceilings, furniture, cars, ponds, underwater, advertising, signs, signs, etc.
The above is the main application of LED strips, if you need more information, please visit our website www.mldrled.com. Shenzhen Mai Le De Run Technology Co., Ltd. is a LED lighting enterprise integrating development, production and sales.
LED strips generally have two types of hard strips and flex strips, both of which are mounted on copper or strip-shaped boards. As the main advertising lighting, commercial lighting and decorative lighting fixtures, LED strips have been widely used in buildings, bridges, roads, gardens, courtyards, floors, ceilings, furniture, cars, ponds, underwater, advertising, signs, signs, etc.
The above is the main application of LED strips, if you need more information, please visit our website www.mldrled.com. Shenzhen Mai Le De Run Technology Co., Ltd. is a LED lighting enterprise integrating development, production and sales.
2018年12月4日星期二
LED grow lights help the British institution builds a vertical farm in the city
Based on official sources, by using agricultural lighting, the Stockbridge Technology Center in Selby, North Yorkshire, the UK, has built a new Vertical Farming Development Facility to help growers test and simulate building their urban farm before investing.
The farm applies the new agricultural lighting solution to help companies, farmers and investors better know about technical and environment required to enhance plants yields before beginning their farm.
To encourage commercial urban farms in the UK, the vertical farm center enables investors and growers to communicate and discuss with vertical farm experts. Furthermore, leveraging the LED lighting solutions, they are able to identify and test vertical farm settings to maximize the scale of harvest, nutritional value, etc.
Moreover, the vertical farm includes two identical growing rooms with a total planting area of 228 square meters, applying a full range of climate control and recirculating systems. There are four layers of crop racks, all using LED grow lights to increase the growth of crops.
Malcolm Yare, Development Manager of Current Agriculture at GE, said that the LED grow lighting is a key factor in the successful growth of any crop, and we will create more arable space in industrial and urban areas by combining the most efficient wavelengths and optimal environmental conditions. Increase global crop yields in a way that is sustainable in business and the environment, surpassing traditional farming methods.
The farm applies the new agricultural lighting solution to help companies, farmers and investors better know about technical and environment required to enhance plants yields before beginning their farm.
To encourage commercial urban farms in the UK, the vertical farm center enables investors and growers to communicate and discuss with vertical farm experts. Furthermore, leveraging the LED lighting solutions, they are able to identify and test vertical farm settings to maximize the scale of harvest, nutritional value, etc.
Moreover, the vertical farm includes two identical growing rooms with a total planting area of 228 square meters, applying a full range of climate control and recirculating systems. There are four layers of crop racks, all using LED grow lights to increase the growth of crops.
Malcolm Yare, Development Manager of Current Agriculture at GE, said that the LED grow lighting is a key factor in the successful growth of any crop, and we will create more arable space in industrial and urban areas by combining the most efficient wavelengths and optimal environmental conditions. Increase global crop yields in a way that is sustainable in business and the environment, surpassing traditional farming methods.
2018年12月2日星期日
How to install the LED strip curtain lights
With the popularity of thin advertising light boxes and stretch ceilings, LED lattice curtain strips have become an important backlight source. Compared with short-life and fragile fluorescent tubes, LED strips have become an irreplaceable backlight source for the advertising lighting and house lighting because of their higher brightness, longer service life, and easier installation. They are widely used in light boxes, showcases, home decorative lighting, etc.
The light strips with the optical lenses are suitable for advertising light boxes with a thickness of less than 10cm because its luminous angle is large than 170°, which can reduce the number of light strips used and reduce the cost. If the thickness of the advertising light box is more than 10cm, it is recommended to use the ordinary LED strips.
The curtain strip lights should be adjusted according to the thickness and size of the light boxes. In order to avoid dark areas, the spacing of the light bars cannot be too large. At the same time, we should pay attention to the correct wiring during installation. In general, the white line represents the negative electrode, and the lines of other color represent the positive electrode. In addition, the LED light strips are generally the low-voltage lights. It should be noted that high-voltage power cannot be directly connected, otherwise the LED lights will be damaged.
The light strips with the optical lenses are suitable for advertising light boxes with a thickness of less than 10cm because its luminous angle is large than 170°, which can reduce the number of light strips used and reduce the cost. If the thickness of the advertising light box is more than 10cm, it is recommended to use the ordinary LED strips.
The curtain strip lights should be adjusted according to the thickness and size of the light boxes. In order to avoid dark areas, the spacing of the light bars cannot be too large. At the same time, we should pay attention to the correct wiring during installation. In general, the white line represents the negative electrode, and the lines of other color represent the positive electrode. In addition, the LED light strips are generally the low-voltage lights. It should be noted that high-voltage power cannot be directly connected, otherwise the LED lights will be damaged.
2018年11月29日星期四
Is the higher brightness of the LED lighting better?
With the development of LED technology and production technology, more and more high-power SMD LEDs are applied to LED light strips. So is the higher brightness of the LED lighting better? The answer is obvious: No. The higher the brightness of the LEDs, the higher it's power. The high power also means that the heat generated by the LED strips are more and the working temperature is higher. The excessive working temperature will result in the acceleration of light decay, the death of LEDs, and other problems, reducing the lifespan of the lights.
The SMD LEDs can work stably within the rated current range. Additional current will increase the brightness of the lights, but working at excessive current for a long time will reduce life, which is the reason why some products have high brightness in beginning, and dim quickly after several months.
As a China LED strip supplier, we have U5630G series LED strip lights made by 0.5W high-quality SMD 5630 LEDs and the high thermal conductivity aluminum PCBs, which have both the high brightness and the excellent heat-dissipation effect.?
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| U5630G LED hard rigid strip lights |
The SMD LEDs can work stably within the rated current range. Additional current will increase the brightness of the lights, but working at excessive current for a long time will reduce life, which is the reason why some products have high brightness in beginning, and dim quickly after several months.
As a China LED strip supplier, we have U5630G series LED strip lights made by 0.5W high-quality SMD 5630 LEDs and the high thermal conductivity aluminum PCBs, which have both the high brightness and the excellent heat-dissipation effect.?
2018年11月27日星期二
7-11 investing 6 billion yen to build LED lighting vertical farm
Japan 7-11 are planning to build a large vertical farm to provide vegetables for their stores in Tokyo and Kanagawa. The farm uses LED grow lights to provide lighting for the vegetables, reducing the impact of weather on prices. Through large-scale procurement is expected to stable the plant operations and encourage further development.
The 7-11 vertical farm invested about 6 billion JPY and is expected to be put into operation in January 2019. 7-11 are considering to build more plant factories in other partner factories in Japan.
At present, 7-11 mainly purchase vegetables from contracted farmers. Due to the traditional farms are more affected by weather, the prices of vegetable will rise sharply during the bad weather. Although the production cost of plant factories is higher than the regular purchase price in the early stage, the production of the vertical farm is not affected by the external environment. For the plant factory, the prices and quality of vegetable are more stable, the defect rate is lower, and on average, the production cost is expected to decrease.
MLDR CO., LTD. is a professional LED grow lights manufacturer in China, welcome to contact us if you have any questions about LED grow lights.
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| 7-11 |
The 7-11 vertical farm invested about 6 billion JPY and is expected to be put into operation in January 2019. 7-11 are considering to build more plant factories in other partner factories in Japan.
At present, 7-11 mainly purchase vegetables from contracted farmers. Due to the traditional farms are more affected by weather, the prices of vegetable will rise sharply during the bad weather. Although the production cost of plant factories is higher than the regular purchase price in the early stage, the production of the vertical farm is not affected by the external environment. For the plant factory, the prices and quality of vegetable are more stable, the defect rate is lower, and on average, the production cost is expected to decrease.
MLDR CO., LTD. is a professional LED grow lights manufacturer in China, welcome to contact us if you have any questions about LED grow lights.
2018年11月25日星期日
Light strips take the lead in showcase lighting
The purpose of using LED strip lights in showcases is that to make the products more expressive and more attractive to customers. Therefore, the showcase is designed to create a specific lighting environment and effectively display the goods.
In addition to considering the size and layout of space, the visual and psychological effects of customers created by the light are also the significant features. Selecting the proper LED lighting according to various products to create the best phenomenon. For example, the jewel showcases will be designed to using the main light source at the top, and install additional light source in the inner side to increase the overall brightness and layering.
LED light strips provide sufficient illumination for the showcase, coupled with a suitable lighting atmosphere can better capture the eyes of customers. Moreover, the flexible LED tape lights also can be used to increase the festival atmosphere.
As a LED strip supplier China, we are welcome any inquiry about LED strip lighting and related applications.
In addition to considering the size and layout of space, the visual and psychological effects of customers created by the light are also the significant features. Selecting the proper LED lighting according to various products to create the best phenomenon. For example, the jewel showcases will be designed to using the main light source at the top, and install additional light source in the inner side to increase the overall brightness and layering.
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| Jewel showcase |
LED light strips provide sufficient illumination for the showcase, coupled with a suitable lighting atmosphere can better capture the eyes of customers. Moreover, the flexible LED tape lights also can be used to increase the festival atmosphere.
As a LED strip supplier China, we are welcome any inquiry about LED strip lighting and related applications.
2018年11月22日星期四
What make the high quality of LED curtain strip lights
As one of the most popular LED backlighting, LED curtain strip lights are widely used in the advertising light boxes. There are two components directly determined the quality of LED curtain strips.
The first one is the light source i.e. SMD LEDs. At present, most of the LED curtain strip lights' light sources are SMD2835 and SMD3030 LEDs. In general, the higher the power, the higher the brightness. Unlike ordinary LED strip lights, the LED curtain strips will use the high power LEDs so that they can provide enough illuminance in fewer LEDs. Therefore, we need to focus on the specifications of the light source.
Another one is the optical lenses that make the beam angle of the LED strips increased to more than 170 degrees from 120 degrees. Due to the lenses will directly affect the light quality, all of our LED curtain strip lights are used the PMMA lenses, which not only have high transparency but also have better heat resistance.
Both the LED light sources and optical lenses are the important components of LED strips. Our LED curtain strip lights made by the superior SMD 3030 LEDs, high transparency PMMA lenses and other high-quality materials, having wide beam angle up to 175 degrees and high brightness. Because of the fewer LEDs and high heat dissipation design, the working temperature is controlled in a quite low range. The curtain lattice light bar applied in 3 to 10cm of the light boxes will have an excellent visual effect.
Shenzhen Mai Le De Run Technology Co., Ltd. is a China LED strip supplier with many years of experience. If you have any questions and requirements, please feel free to contact us.
The first one is the light source i.e. SMD LEDs. At present, most of the LED curtain strip lights' light sources are SMD2835 and SMD3030 LEDs. In general, the higher the power, the higher the brightness. Unlike ordinary LED strip lights, the LED curtain strips will use the high power LEDs so that they can provide enough illuminance in fewer LEDs. Therefore, we need to focus on the specifications of the light source.
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| LED curtain strip lights with PMMA lenses |
Another one is the optical lenses that make the beam angle of the LED strips increased to more than 170 degrees from 120 degrees. Due to the lenses will directly affect the light quality, all of our LED curtain strip lights are used the PMMA lenses, which not only have high transparency but also have better heat resistance.
Both the LED light sources and optical lenses are the important components of LED strips. Our LED curtain strip lights made by the superior SMD 3030 LEDs, high transparency PMMA lenses and other high-quality materials, having wide beam angle up to 175 degrees and high brightness. Because of the fewer LEDs and high heat dissipation design, the working temperature is controlled in a quite low range. The curtain lattice light bar applied in 3 to 10cm of the light boxes will have an excellent visual effect.
Shenzhen Mai Le De Run Technology Co., Ltd. is a China LED strip supplier with many years of experience. If you have any questions and requirements, please feel free to contact us.
2018年11月20日星期二
LED grow lights help Fujian plant factory producing
A LED lighting plant factory in Fujian, China, with an area of 10,000 square meters, is the largest plant factory in the world.
Although the vegetables can grow in the normal environment, all the vegetables in the plant factory must be grown in the clean space to avoid diseases and insect pests. Therefore, the staffs are requested to have a series of complicated and rigorous disinfection procedures before entering the production area.
In the huge workshop, rows of plant cultivation modules are neatly arranged, just like a large supermarket. The top of each layer of cultivation racks are covered with LED grow lights, and various lettuce and cabbage are planted on the cultivation racks. Although there is no soil, and no sunshine all year round, these vegetables are growing strong.
The plants need different light in different growth stages. Therefore, the plant factory can control the quality and yield of vegetables by adjusting the LED grow lights, which is impossible to sunlight. For example, in the seedling stage, the factory can make seedlings grow stronger and synthesis more soluble proteins through increase the blue light ratio of LED grow lights.
Beginning in 2016, the vegetables grown in the plant factory entered the market and received positive market feedback. The lettuce produced in the plant factory is placed in a cold air cabinet, a pack of 150 grams, priced at 9.9 yuan, and 150 grams of ordinary lettuce is less than 1 yuan. The price disparity is so large, but consumers still think that the vegetables produced by plant factories are healthier and more nutritious.
Although the vegetables can grow in the normal environment, all the vegetables in the plant factory must be grown in the clean space to avoid diseases and insect pests. Therefore, the staffs are requested to have a series of complicated and rigorous disinfection procedures before entering the production area.
In the huge workshop, rows of plant cultivation modules are neatly arranged, just like a large supermarket. The top of each layer of cultivation racks are covered with LED grow lights, and various lettuce and cabbage are planted on the cultivation racks. Although there is no soil, and no sunshine all year round, these vegetables are growing strong.
The plants need different light in different growth stages. Therefore, the plant factory can control the quality and yield of vegetables by adjusting the LED grow lights, which is impossible to sunlight. For example, in the seedling stage, the factory can make seedlings grow stronger and synthesis more soluble proteins through increase the blue light ratio of LED grow lights.
Beginning in 2016, the vegetables grown in the plant factory entered the market and received positive market feedback. The lettuce produced in the plant factory is placed in a cold air cabinet, a pack of 150 grams, priced at 9.9 yuan, and 150 grams of ordinary lettuce is less than 1 yuan. The price disparity is so large, but consumers still think that the vegetables produced by plant factories are healthier and more nutritious.
2018年11月18日星期日
What're the advantages of LED light strips for light box backlighting?
With the development of light boxes' backlighting, LED strip lights are commonly used in advertising lighting, for its long lifespan, low energy consumption, and easy installation.
1. Long service life
Due to the high quality of SMD LEDs and advanced process, most of the LED strip lights have a life of up to 50,000 hours, and the light almost has no droop in the long period of working, which not only avoids the frequent replacement of backlighting but also meets the brightness demand of lightbox lighting.
2. Low energy consumption
The energy consumption of LED strips is only 20% of that of the traditional light tube, and the LED lighting has a better heat dissipation effect.
3. Easy installation
LED light strips are more convenient for installation than other light sources. For example, the LED curtain strip lights only need to hang on the top of the light box for fixation, which greatly saves the labor cost of installation.
SHENZHEN MLDR TECHNOLOGY CO., LTD. is a new developing enterprise committed to the designing, developing, manufacturing, and selling of LED light strips for advertising lighting, home lighting and decorative lighting.
1. Long service life
Due to the high quality of SMD LEDs and advanced process, most of the LED strip lights have a life of up to 50,000 hours, and the light almost has no droop in the long period of working, which not only avoids the frequent replacement of backlighting but also meets the brightness demand of lightbox lighting.
2. Low energy consumption
The energy consumption of LED strips is only 20% of that of the traditional light tube, and the LED lighting has a better heat dissipation effect.
3. Easy installation
LED light strips are more convenient for installation than other light sources. For example, the LED curtain strip lights only need to hang on the top of the light box for fixation, which greatly saves the labor cost of installation.
SHENZHEN MLDR TECHNOLOGY CO., LTD. is a new developing enterprise committed to the designing, developing, manufacturing, and selling of LED light strips for advertising lighting, home lighting and decorative lighting.
2018年11月15日星期四
Plant factory into investment hot
Based on information technology, intelligent agriculture has solved the problem of less labor and realized the transformation and upgrading of the agricultural industry. The plant factory uses the computer to automatically control the environmental conditions such as temperature, humidity, light, carbon dioxide concentration and nutrient solution of the plant and realizes mass production of plants in a short period of time in a small space.
A plant factory greenhouse that requires 10 people to manage, can harvest 1 million vegetables and sell one million USD a year. The plant factory first appeared in northern Europe, and there are currently more than 400 artificial plant factories in the world, half of which are in Japan. Located in Japan, a plant factory the plant is a closed-plan environment in a two-story building surrounded by vegetable greenhouses. The staff monitors the growth of vegetables through the computer management system. Vegetables take about 20 days from planting to seedling. The staff can monitor the temperature, humidity, and light of the greenhouse through displayers to realize remote operation.
In recent years, plant factories have become a popular target for global agricultural investment. One of the reasons for the increase in investment is the large-scale use of LED grow lights in plant factories. In the past, the electricity costs accounted for about 25% of the total costs of plant factories. In other words, the application of LED grow lights reduced the costs of investment and production. It is understood that, at present, agriculture LED lighting plant factories mainly produce various vegetables. Meanwhile, researchers are concerned about higher value-added medicines.
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| LED grow lights in the plant factory |
A plant factory greenhouse that requires 10 people to manage, can harvest 1 million vegetables and sell one million USD a year. The plant factory first appeared in northern Europe, and there are currently more than 400 artificial plant factories in the world, half of which are in Japan. Located in Japan, a plant factory the plant is a closed-plan environment in a two-story building surrounded by vegetable greenhouses. The staff monitors the growth of vegetables through the computer management system. Vegetables take about 20 days from planting to seedling. The staff can monitor the temperature, humidity, and light of the greenhouse through displayers to realize remote operation.
In recent years, plant factories have become a popular target for global agricultural investment. One of the reasons for the increase in investment is the large-scale use of LED grow lights in plant factories. In the past, the electricity costs accounted for about 25% of the total costs of plant factories. In other words, the application of LED grow lights reduced the costs of investment and production. It is understood that, at present, agriculture LED lighting plant factories mainly produce various vegetables. Meanwhile, researchers are concerned about higher value-added medicines.
2018年11月13日星期二
What is the basis for selecting the LED light bar of the lightbox?
There are many types of advertising light boxes, different light boxes are suitable for using places. Likewise, choosing LED light strips and design layout as the specific requirements of light boxes can make the perfect display effect without dark areas. In the following, according to different environments, we are going to recommend different LED strip lights.
The first is the outdoor advertising light boxes that commonly use in the bus stops, streets, and other public places. Since the water will damage the LED backlighting, the waterproof LED strips will be a better choice if the waterproof performance of the lightbox is not good enough. There are many types of waterproofing techniques such as IP65 glue waterproof, IP67 tube waterproof, and IP68 waterproof. After the waterproof process, LED lights have the excellent sealing performance to protect the internal components from rainwater.
There are also indoor light boxes in the indoor environment such as subway stations, shopping malls, exhibition halls. Due to the indoor lightboxes won't be damaged by the rain, It is more suitable to use the non-waterproof LED strip lights, which not only can save cost but also have a better heat dissipation condition.
Nowadays, the ultra-thin light boxes with a thickness of 3 to 10 cm are more and more popular. Obviously, in such a short distance between the backlights and cloth, traditional LED strips with a beam angle of 120 degrees cannot achieve the best lighting effect. Therefore, LED curtain strip lights with an emitted angle of 170 degrees were created. With the wide beam angle, LED curtain strips are able to achieve better lighting effect with lower quantity.
The first is the outdoor advertising light boxes that commonly use in the bus stops, streets, and other public places. Since the water will damage the LED backlighting, the waterproof LED strips will be a better choice if the waterproof performance of the lightbox is not good enough. There are many types of waterproofing techniques such as IP65 glue waterproof, IP67 tube waterproof, and IP68 waterproof. After the waterproof process, LED lights have the excellent sealing performance to protect the internal components from rainwater.
There are also indoor light boxes in the indoor environment such as subway stations, shopping malls, exhibition halls. Due to the indoor lightboxes won't be damaged by the rain, It is more suitable to use the non-waterproof LED strip lights, which not only can save cost but also have a better heat dissipation condition.
Nowadays, the ultra-thin light boxes with a thickness of 3 to 10 cm are more and more popular. Obviously, in such a short distance between the backlights and cloth, traditional LED strips with a beam angle of 120 degrees cannot achieve the best lighting effect. Therefore, LED curtain strip lights with an emitted angle of 170 degrees were created. With the wide beam angle, LED curtain strips are able to achieve better lighting effect with lower quantity.
2018年11月11日星期日
LED lighting vertical farm in the tunnel
In recent years, plant factories and vertical farms have gradually emerged everywhere, and the construction methods are varied, the vegetables can be grown on the ground, underground, in the air, at sea, and in containers. Recently, tunnel vertical farms have also appeared.
According to reports, an old tunnel in South Korea was transformed into a vertical farm, using LED grow lights to grow vegetables and fruits to solve the problems caused by extreme weather, shortage of agricultural land, and labor shortage.
An indoor agricultural company called leased a closed tunnel in South Korea and transformed it into a smart farm by using vertical stacking, using hydroponics and LED lighting to grow crops. According to the company, this is the world's first indoor vertical farm built in a tunnel and the largest vertical farm in Korea, covering an area of 2,300 square meters.
As global warming and agricultural labor continue to shrink, smart farms using LED lighting technology and systems have become potential solutions for sustainable food production.
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| LED strip grow light |
According to reports, an old tunnel in South Korea was transformed into a vertical farm, using LED grow lights to grow vegetables and fruits to solve the problems caused by extreme weather, shortage of agricultural land, and labor shortage.
An indoor agricultural company called leased a closed tunnel in South Korea and transformed it into a smart farm by using vertical stacking, using hydroponics and LED lighting to grow crops. According to the company, this is the world's first indoor vertical farm built in a tunnel and the largest vertical farm in Korea, covering an area of 2,300 square meters.
As global warming and agricultural labor continue to shrink, smart farms using LED lighting technology and systems have become potential solutions for sustainable food production.
2018年11月8日星期四
How to ensure that the lenses work at the right temperature
As one of the most important parts of LED lights, LED lenses play a more and more important role in the LED lighting industry, which widely applicated in advertising lighting, office lighting, and home lighting. Relying on the reflecting lenses, LED curtain lattice strip lights have a wide beam angle up to 175 degrees, which fit well with thin light boxes, billboards, stretch ceilings and other backlighting. At present, most of the LED lenses in the market are made of PMMA or PC. Due to the temperature resistance of the materials is not high, so excessive heat will directly affect the performance of LED lenses. In this article, we will introduce how to reduce the impact of heat on the LED lens.
In the short-term use of LED lenses in the environment of overheating, color drift and light droop of LED light strips will have resulted. If working at such an environment for a long period of time, the light decay is accelerated and the life is shortened. In order to avoid the effects of overheating on the LED light fixtures, LED strip lights manufacturers often use passive and active cooling methods to dissipate heat.
Passive heat dissipation means that the heat is dissipated by the LED fixture itself. The most common passive heat sink for LED lattice curtain strips is the aluminum rigid PCB that has the excellent thermal conductivity, cooling the LED light source and LED lenses efficiently. Because the passive cooling system does not consume energy, it is the most energy-efficient and environmentally friendly. Our LED curtain light strips are adapt this type of cooling method i.e. high heat-conductive aluminum PCB to control the temperature in a really low range.
Active cooling is generally used on high-power LED lights that the lights themselves have no capacity to dissipate such a lot heat. The common active energy-consuming cooling devices are pumps and fans.
For more detail of LED curtain lattice lights, please visit our product presentation MFS3030A. MLDRLED, the professional LED light strips manufacturer in Shenzhen, China.
In the short-term use of LED lenses in the environment of overheating, color drift and light droop of LED light strips will have resulted. If working at such an environment for a long period of time, the light decay is accelerated and the life is shortened. In order to avoid the effects of overheating on the LED light fixtures, LED strip lights manufacturers often use passive and active cooling methods to dissipate heat.
Passive heat dissipation means that the heat is dissipated by the LED fixture itself. The most common passive heat sink for LED lattice curtain strips is the aluminum rigid PCB that has the excellent thermal conductivity, cooling the LED light source and LED lenses efficiently. Because the passive cooling system does not consume energy, it is the most energy-efficient and environmentally friendly. Our LED curtain light strips are adapt this type of cooling method i.e. high heat-conductive aluminum PCB to control the temperature in a really low range.
Active cooling is generally used on high-power LED lights that the lights themselves have no capacity to dissipate such a lot heat. The common active energy-consuming cooling devices are pumps and fans.
For more detail of LED curtain lattice lights, please visit our product presentation MFS3030A. MLDRLED, the professional LED light strips manufacturer in Shenzhen, China.
2018年11月6日星期二
LED grow lights help Taiwan orchard save half of the electricity
Taiwan's Tainan City Agriculture Bureau has promoted the Dragon Fruit LED Light Lighting Subsidy Program. In addition to allowing farmers to respond to power saving policy, it can also adjust the excessive price drop of Dragon Fruit production. Xie Mingshu, head of the Piny Farm, who planted the dragon fruit, said that the farm replaced all the traditional bulbs with LED lights about four years ago, saving nearly 50% of the electricity cost every year compared with the past.
Xie Mingshu planted 15 hectares of dragon fruit. He said that before using traditional light bulbs, 2,500 bulbs were needed for 1 hectare. The monthly electricity bill was nearly 25,000 NTD. The orchard was completely replaced by LED grow lights 4 years ago. Nowadays, the monthly electricity costs are almost 10,000 NTD, which not only save a lot of costs but also more environmentally friendly. He said that this kind of LED grow light is actually a plant growth lighting lamp for outdoor use. It adopts the specific spectrum design to increase the flowering rate, and prolong the crop maturity time to avoid the production period and wind disaster.
The Agriculture Bureau pointed out that the planting area of Tainan dragon fruit from 321 hectares in 2015 to 356 hectares in 2017. This year, we tried to promote subsidies for purchasing LED grow lights and invited farmers to save energy and reduce carbon from agricultural lighting.
The Agriculture Bureau said that the planned funding is now 940,000 NTD. If the farmers replace more than 2,500 traditional energy-saving bulbs per hectare and change them to 12W (watts) or more, they will subsidize one-third of the purchases per hectare. Ten thousand yuan is the upper limit.
The Agriculture Bureau said that although the price of the LED grow lights are more expansive than the traditional lights, it can save farmers a lot of electricity bills in the long run.
Xie Mingshu planted 15 hectares of dragon fruit. He said that before using traditional light bulbs, 2,500 bulbs were needed for 1 hectare. The monthly electricity bill was nearly 25,000 NTD. The orchard was completely replaced by LED grow lights 4 years ago. Nowadays, the monthly electricity costs are almost 10,000 NTD, which not only save a lot of costs but also more environmentally friendly. He said that this kind of LED grow light is actually a plant growth lighting lamp for outdoor use. It adopts the specific spectrum design to increase the flowering rate, and prolong the crop maturity time to avoid the production period and wind disaster.
The Agriculture Bureau pointed out that the planting area of Tainan dragon fruit from 321 hectares in 2015 to 356 hectares in 2017. This year, we tried to promote subsidies for purchasing LED grow lights and invited farmers to save energy and reduce carbon from agricultural lighting.
The Agriculture Bureau said that the planned funding is now 940,000 NTD. If the farmers replace more than 2,500 traditional energy-saving bulbs per hectare and change them to 12W (watts) or more, they will subsidize one-third of the purchases per hectare. Ten thousand yuan is the upper limit.
The Agriculture Bureau said that although the price of the LED grow lights are more expansive than the traditional lights, it can save farmers a lot of electricity bills in the long run.
2018年11月4日星期日
How to choose the CCT of LED curtain strip lights
As one of the most popular LED backlighting LED curtain light strips have been widely used in supermarkets, subway and bus stations, and halls. With its high-quality light and wide beam angle, it makes ultra-thin lightboxes a reality and greatly improves the visual effect of advertising lightboxes and stretch ceiling.
The color temperature of the LED side-irradiated light bar is determined by the light source. In today's market, the light source used in the diffuse light bar are generally SMD 3030 and SMD 2835 LEDs. The common CCT are 3000K, 4000K, 6500K and 10000K. Different advertising designs are suitable for using LED light strips with different color temperature. After a comprehensive analysis of the illumination effects of the light bars of different color temperatures, we conclude that the light boxes with the light-color pattern are suitable for the high CCT light strips, such as MFS3030A-1. If the integral color of the pattern is dark, the white light strips will be a better choice. Selecting the product according to this method can make the pattern of the light boxes and the stretch ceilings more natural and clear. Of course, the actual situation is still based on the application places and the overall color. For example, if the main color of the pattern is white, it is recommended to use the 6500K light.
The above is the method of selecting the color temperature of the LED strip according to the patterns. If you have any questions and requirements, please feel free to contact us.
The color temperature of the LED side-irradiated light bar is determined by the light source. In today's market, the light source used in the diffuse light bar are generally SMD 3030 and SMD 2835 LEDs. The common CCT are 3000K, 4000K, 6500K and 10000K. Different advertising designs are suitable for using LED light strips with different color temperature. After a comprehensive analysis of the illumination effects of the light bars of different color temperatures, we conclude that the light boxes with the light-color pattern are suitable for the high CCT light strips, such as MFS3030A-1. If the integral color of the pattern is dark, the white light strips will be a better choice. Selecting the product according to this method can make the pattern of the light boxes and the stretch ceilings more natural and clear. Of course, the actual situation is still based on the application places and the overall color. For example, if the main color of the pattern is white, it is recommended to use the 6500K light.
The above is the method of selecting the color temperature of the LED strip according to the patterns. If you have any questions and requirements, please feel free to contact us.
2018年11月1日星期四
Waterproofing technology of LED light strips
Due to the market requirement for outdoor lightboxes, water-resistant LED backlighting happened. And then, because the widespread application and heavy demand, a lot of LED light strips suppliers have entered this industry, and more and more types of waterproof LED strips have launched. Nowadays, there is two main waterproof technology in the industry: glue-filled waterproof and tube waterproof. The main features of the two LED waterproof technology are below.
The first is glue-filled waterproof technology that is a process that drops or pour the silicon glue on the surface of the LED light bar to withstand water. The process of glue waterproof is relatively more complex than tube waterproof process. One example is MFS3030WP IP65 waterproof LED strip lattice lights, in its waterproofing process, it has to be taken into account that the glue should not get to the surface of the light source LED or else, the light color of the LED will be changed. In addition, in case the glue through the gap to the bottom of the circuit board, the LED light bar will become a nonconforming product.
The other one, the tube waterproof process utilizes the glue tube to wrapping the LED light tape. Thanks to its leakproofness, the workers just need to seal the plugs at both ends of the light strip tube. The tube waterproof has higher IP rating, for its completely enclosed. Furthermore, the heat dissipation space in the tube is larger than the glue waterproof, and because the LED ribbon is entirely sealed by the tube, there is no possibility that the spilled water damage the LEDs. R2835TG silicon tube waterproof LED ribbon is an excellent example.
The above is the introduction of waterproof LED strips, if you need more detailed LED strip information or any have other questions, please contact MLDR Tech. Co., Ltd., a LED strip lights manufacturer in China.
2018年10月30日星期二
LED Strip 220V vs 12V
LED strips are often used to outline the contours of buildings, to build large lighting patterns, interior decorations, home lighting, and so on.
Classified according to the input voltage, the SMD LED strip lights can be divided into the high-voltage and the low-voltage. The input voltage of the low voltage light bar is commonly 12V or 24V DC, and the high-voltage light bar is 220V AC. So what are the differences between the two? What are the advantages and disadvantages of them? This post will give you the answer.
1. Safety performance: As we all know, the voltage of AC 220V is dangerous, which is not suitable for some places that people can easily touch. The low-voltage LED light bar works under the working voltage of DC 12V or 24V that is no danger to the person. To avoid hurting people, LED strip lights manufacturer will encapsulate the rigid strip with plastic profile and cover seal the flex LED tape with the plastic tube. Despite the improved safety performance, the cost of production has also increased.
2. Installation: The high voltage is used in daily life so that the installation of 220V LED strips is relatively simple. However, the 12 volt and 24 volt LED tapes are need corresponding LED adaptor to transfer the 220V AC to DC low voltage, which is relatively complicated during installation.
3. The price: The price of the LED lights themselves are close, but it is different from the overall cost. At current market prices, the cost of the low-voltage power supply accounts for a large share of the total cost. Therefore, the overall usage cost of low-voltage LED strips will be higher.
4. Service life: The lifespan of the low-voltage LED strips will be 50,000 hours. Using the same material, the high-voltage LED lights will have a higher working temperature and faster droop, which directly shorten the working life.
The above analysis shows that the two types of LED strip lights have their own advantages and disadvantages. We should choose the right product according to different usage environments and requirements.
Classified according to the input voltage, the SMD LED strip lights can be divided into the high-voltage and the low-voltage. The input voltage of the low voltage light bar is commonly 12V or 24V DC, and the high-voltage light bar is 220V AC. So what are the differences between the two? What are the advantages and disadvantages of them? This post will give you the answer.
1. Safety performance: As we all know, the voltage of AC 220V is dangerous, which is not suitable for some places that people can easily touch. The low-voltage LED light bar works under the working voltage of DC 12V or 24V that is no danger to the person. To avoid hurting people, LED strip lights manufacturer will encapsulate the rigid strip with plastic profile and cover seal the flex LED tape with the plastic tube. Despite the improved safety performance, the cost of production has also increased.
2. Installation: The high voltage is used in daily life so that the installation of 220V LED strips is relatively simple. However, the 12 volt and 24 volt LED tapes are need corresponding LED adaptor to transfer the 220V AC to DC low voltage, which is relatively complicated during installation.
3. The price: The price of the LED lights themselves are close, but it is different from the overall cost. At current market prices, the cost of the low-voltage power supply accounts for a large share of the total cost. Therefore, the overall usage cost of low-voltage LED strips will be higher.
4. Service life: The lifespan of the low-voltage LED strips will be 50,000 hours. Using the same material, the high-voltage LED lights will have a higher working temperature and faster droop, which directly shorten the working life.
The above analysis shows that the two types of LED strip lights have their own advantages and disadvantages. We should choose the right product according to different usage environments and requirements.
2018年10月28日星期日
The new SMD 2835 LEDs up to 200 lm/W were launched
Recently, Lumileds announced the launch of the new LUXEON 2835 HE LED, which has an efficiency of up to 200 lm/W and provides a new definition of color consistency for LEDs on the market.
These new LEDs are optimized for outstanding efficiency and second-order MacAdam elliptical color consistency in applications such as troffers and high-bay/low-bay luminaires.
Sam Wu, Lumileds' mid-power product line product manager, said, "These LEDs have tight color points that are not found in other mid-power devices in their class. The second-order MacAdam Elliptical Design Kit delivers optimal color consistency for demanding lighting applications." These LEDs achieve a luminous flux of 36 lm and an efficiency of 202 lm/W at a drive current of 65 mA and achieve a luminous flux of 220 lm (4000K and 80 CRI) at a drive current of 480 mA.
Sam Lux explains, “The SMD 2835 LEDs is ideal for applications that require luminaire efficiencies greater than 150 lm/W, and the number of LEDs must be minimized.” Lumileds' high-reliability design makes LUXEON 2835 HE Provides more light for smaller general lighting applications.
The LUXEON 2835 HE offers a range of color temperatures and 70 to 90 CRI options for a variety of general lighting designs. These LEDs can be used immediately to replace the 2835 LED package (2.8 x 3.5 mm) or to replace the 5630 (5.6 x 3.0 mm) or 3030 (3.0 x 3.0 mm) medium power bead with similar optical requirements.
These new LEDs are optimized for outstanding efficiency and second-order MacAdam elliptical color consistency in applications such as troffers and high-bay/low-bay luminaires.
Sam Wu, Lumileds' mid-power product line product manager, said, "These LEDs have tight color points that are not found in other mid-power devices in their class. The second-order MacAdam Elliptical Design Kit delivers optimal color consistency for demanding lighting applications." These LEDs achieve a luminous flux of 36 lm and an efficiency of 202 lm/W at a drive current of 65 mA and achieve a luminous flux of 220 lm (4000K and 80 CRI) at a drive current of 480 mA.
Sam Lux explains, “The SMD 2835 LEDs is ideal for applications that require luminaire efficiencies greater than 150 lm/W, and the number of LEDs must be minimized.” Lumileds' high-reliability design makes LUXEON 2835 HE Provides more light for smaller general lighting applications.
The LUXEON 2835 HE offers a range of color temperatures and 70 to 90 CRI options for a variety of general lighting designs. These LEDs can be used immediately to replace the 2835 LED package (2.8 x 3.5 mm) or to replace the 5630 (5.6 x 3.0 mm) or 3030 (3.0 x 3.0 mm) medium power bead with similar optical requirements.
2018年10月26日星期五
Stroboscopic Effect of LED Lights
The concept of healthy lighting is becoming more and more popular, and more and more people pay attention to the stroboscopic problem of LED lights. Today we will take a look at the in-depth analysis of the stroboscopic effect of LED lights.
In addition to being annoying, the flickering light can cause serious illnesses such as headaches, visual impairment. Even if the flicker is slight, for example at a high frequency of 100 to 150 Hz, it is invisible to our eyes, but the brain can still detect and react to it, with potentially negative consequences.
Almost all types of lights have stroboscopic, but each light has a different effect. For example, in incandescent and halogen lamps, the filament temperature reacts slowly to changes in current so you won't notice the effect of flickering. However, the LED strobe is caused by the driver. For current changes, the LED responds almost immediately, so the flicker is more noticeable.
And in daily life, you can see the strobe by using the mobile phone camera, but this is not a way to judge whether the product is qualified. The phone is not a strobe detection tool because the phone lens has a rolling shutter effect, but it can be a reference tool. If you use your phone camera under severely strobed lights, it's easy to find the light and dark ripples on your phone screen.
In recent years, the public's voices and requirements for health lighting are getting higher and higher. In order to effectively improve the quality of light, more and more consumers have already learned about the potential damage caused by stroboscopic. The stroboscopic problem must be faced with solve. Having a healthy light environment is a basic requirement, and choosing a good LED driver can minimize the negative effects of the strobe. Creating a healthy lighting environment requires the joint efforts of LED lights manufacturers and power supply manufacturers.
In addition to being annoying, the flickering light can cause serious illnesses such as headaches, visual impairment. Even if the flicker is slight, for example at a high frequency of 100 to 150 Hz, it is invisible to our eyes, but the brain can still detect and react to it, with potentially negative consequences.
Almost all types of lights have stroboscopic, but each light has a different effect. For example, in incandescent and halogen lamps, the filament temperature reacts slowly to changes in current so you won't notice the effect of flickering. However, the LED strobe is caused by the driver. For current changes, the LED responds almost immediately, so the flicker is more noticeable.
And in daily life, you can see the strobe by using the mobile phone camera, but this is not a way to judge whether the product is qualified. The phone is not a strobe detection tool because the phone lens has a rolling shutter effect, but it can be a reference tool. If you use your phone camera under severely strobed lights, it's easy to find the light and dark ripples on your phone screen.
In recent years, the public's voices and requirements for health lighting are getting higher and higher. In order to effectively improve the quality of light, more and more consumers have already learned about the potential damage caused by stroboscopic. The stroboscopic problem must be faced with solve. Having a healthy light environment is a basic requirement, and choosing a good LED driver can minimize the negative effects of the strobe. Creating a healthy lighting environment requires the joint efforts of LED lights manufacturers and power supply manufacturers.
2018年10月24日星期三
LED Lights Power Supply Basics
LED driving power is a converter that converts input voltage and current into specific values required for LEDs. Generally, the input of the LED power source includes commercial power, low voltage DC, high voltage DC, low voltage high-frequency AC, etc. The core components of the LED power supply include a switch controller, an inductor, a switching component, feedback resistor, input filter component, the output filter component, and so on. According to the different requirements, there are also have a variety of protection circuit.
Sometimes, what decides the lifespan of LED lights is not themselves, but the drive power. A good power supply requires high reliability, high efficiency, and protection functions. High reliability ensures smooth operation of power supplies and LED lights, reducing post-maintenance costs. The high efficiency will reduce consumption, which reduces the temperature rise of the LED. Moreover, according to the service environment, the power supply also needs to add the corresponding protection function to prevent the lamp from being damaged by the electrical surge, reverse voltage and so on.
According to the driving mode, the power supply can be divided into the constant current supply and the stabilized voltage supply. The current output by the constant current driving circuit is constant, and the output DC voltage varies within a certain range depending on the magnitude of the load resistance. When the parameters in the voltage stabilizing circuit are determined, the output voltage is fixed, and the output current changes as the load increases or decreases. The constant current supply is more suitable for LED lights than the stabilized supply, but the cost of is also higher.
Sometimes, what decides the lifespan of LED lights is not themselves, but the drive power. A good power supply requires high reliability, high efficiency, and protection functions. High reliability ensures smooth operation of power supplies and LED lights, reducing post-maintenance costs. The high efficiency will reduce consumption, which reduces the temperature rise of the LED. Moreover, according to the service environment, the power supply also needs to add the corresponding protection function to prevent the lamp from being damaged by the electrical surge, reverse voltage and so on.
According to the driving mode, the power supply can be divided into the constant current supply and the stabilized voltage supply. The current output by the constant current driving circuit is constant, and the output DC voltage varies within a certain range depending on the magnitude of the load resistance. When the parameters in the voltage stabilizing circuit are determined, the output voltage is fixed, and the output current changes as the load increases or decreases. The constant current supply is more suitable for LED lights than the stabilized supply, but the cost of is also higher.
2018年10月21日星期日
LED lighting helps to plant and harvest fruits in winter
The development of grow lights continues to change our understanding of agriculture. In recent years, with the maturity of LED plant lights technology, more and more plant factories use LED grow lights, and many institutions have conducted research on LED lighting planting crops.
Recently, a Dutch company called Delphy has conducted a study on the use of LED lighting to grow raspberries and blackberries, aiming to harvest fruits during the winter. They first tried using LED lights to grow raspberries and blackberries in November last year and harvested fresh blackberries in March this year. This experiment shows that under limited natural light conditions, the BlackBerry can be successfully cultivated by LED lighting. Based on this experience, in September, the researchers started a new project to grow long-term preserved and frozen blackberry plants and plan to harvest the fruits in December.
According to Delphy, the project is supported by the Dutch Ministry of Agriculture and Nature & Food Quality Department, which aims to study the influence of indoor LED lighting and light intensity to promoting crop maturity. At the same time, the research will also develop a future-oriented and energy-efficient new planting concept to grow crops in winter.
Recently, a Dutch company called Delphy has conducted a study on the use of LED lighting to grow raspberries and blackberries, aiming to harvest fruits during the winter. They first tried using LED lights to grow raspberries and blackberries in November last year and harvested fresh blackberries in March this year. This experiment shows that under limited natural light conditions, the BlackBerry can be successfully cultivated by LED lighting. Based on this experience, in September, the researchers started a new project to grow long-term preserved and frozen blackberry plants and plan to harvest the fruits in December.
According to Delphy, the project is supported by the Dutch Ministry of Agriculture and Nature & Food Quality Department, which aims to study the influence of indoor LED lighting and light intensity to promoting crop maturity. At the same time, the research will also develop a future-oriented and energy-efficient new planting concept to grow crops in winter.
2018年10月18日星期四
LED heat dissipation technology and materials
Heat dissipation is a principal factor affecting the illumination intensity of LED lights. In order to achieve a better effect, all of the LED lights manufacturers and related research institutes have been working to improve the heat dissipation technology and materials.
In general, the heatsink can be divided into the passive heatsink and the active heatsink. Passive heat dissipation means that the heat of the LED light source is naturally radiated into the air through the heatsink, and the heat dissipation effect is proportional to the size of the heatsink. However, it can only be used in LED lights of relatively low power. For example, the aluminum PCB of the rigid LED light strip is equivalent to a heatsink. The high power LED lights such as the LED grow light commonly adopts active heat dissipation, that is, the heat emitted by the heat sink is forcibly taken away by the heatsink such as the fan, which is characterized by high cooling efficiency and the small volume.
As can be seen from the above table, silver and copper are the best thermal materials, followed by gold and aluminum. However, gold and silver are too expensive, so the current heat sink is mainly made of aluminum and copper. In comparison, both copper and aluminum alloy have their own advantages and disadvantages. Copper has good thermal conductivity, but the price is relatively expensive, the processing is difficult, the weight is too large, and the copper heat sink has a small heat capacity and is easily oxidized. On the other hand, pure aluminum is too soft to be used directly. The aluminum alloy used can provide sufficient hardness. The advantage of aluminum alloy is that it is cheap and light, but the thermal conductivity is much worse than copper. Of course, there are some radiators for other materials, such as fiberglass, ceramics, etc., and because of their price and process, they also have a place in the market.
The LED industry has extremely strict requirements on the alignment accuracy of the heat-dissipating substrate itself, and it needs to have characteristics such as high heat dissipation, small size, and good adhesion of metal lines. To improve LED luminous efficiency and service life, solving the heat dissipation problem of LED products is one of the most important issues at this stage.
In general, the heatsink can be divided into the passive heatsink and the active heatsink. Passive heat dissipation means that the heat of the LED light source is naturally radiated into the air through the heatsink, and the heat dissipation effect is proportional to the size of the heatsink. However, it can only be used in LED lights of relatively low power. For example, the aluminum PCB of the rigid LED light strip is equivalent to a heatsink. The high power LED lights such as the LED grow light commonly adopts active heat dissipation, that is, the heat emitted by the heat sink is forcibly taken away by the heatsink such as the fan, which is characterized by high cooling efficiency and the small volume.
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| Heat Conductivity Coefficient |
As can be seen from the above table, silver and copper are the best thermal materials, followed by gold and aluminum. However, gold and silver are too expensive, so the current heat sink is mainly made of aluminum and copper. In comparison, both copper and aluminum alloy have their own advantages and disadvantages. Copper has good thermal conductivity, but the price is relatively expensive, the processing is difficult, the weight is too large, and the copper heat sink has a small heat capacity and is easily oxidized. On the other hand, pure aluminum is too soft to be used directly. The aluminum alloy used can provide sufficient hardness. The advantage of aluminum alloy is that it is cheap and light, but the thermal conductivity is much worse than copper. Of course, there are some radiators for other materials, such as fiberglass, ceramics, etc., and because of their price and process, they also have a place in the market.
The LED industry has extremely strict requirements on the alignment accuracy of the heat-dissipating substrate itself, and it needs to have characteristics such as high heat dissipation, small size, and good adhesion of metal lines. To improve LED luminous efficiency and service life, solving the heat dissipation problem of LED products is one of the most important issues at this stage.
2018年10月16日星期二
Germany successfully grows vegetables in the arctic with the help of LED grow lights
According to the German arctic research camp, researchers have successfully planted and harvested 183kg of fresh vegetables including tomatoes, cucumbers, kohlrabi and so on. This successful trial not only marks that the humans have the ability to planting in the Arctic but also set an example for other researchers who try to grow plants in other harsh natural environments and outer space.
It is extremely difficult for supply ships to enter the Arctic during the winter because the sea will be covered with extremely thick ice. Therefore, It's almost impossible for staff in the Arctic to eat fresh vegetables at that time. In February of this year, The German team built a greenhouse that could withstand temperatures as low as minus 40 degrees Celsius and built vertical farms in it. The lack of sunlight in the greenhouse makes artificial lighting indispensable, for this reason, LED grow lights are used to create the light condition for the growth of vegetables. Although the tomatoes grown in this greenhouse aren't as big as those grown outside, its vitamin content exceeds that of refrigerated vegetables.
This may also be a good example for future agricultural development. Moreover, the LED grow lights that is famous for energy conservation and environmental protection also will occupy an important position in future agriculture.
It is extremely difficult for supply ships to enter the Arctic during the winter because the sea will be covered with extremely thick ice. Therefore, It's almost impossible for staff in the Arctic to eat fresh vegetables at that time. In February of this year, The German team built a greenhouse that could withstand temperatures as low as minus 40 degrees Celsius and built vertical farms in it. The lack of sunlight in the greenhouse makes artificial lighting indispensable, for this reason, LED grow lights are used to create the light condition for the growth of vegetables. Although the tomatoes grown in this greenhouse aren't as big as those grown outside, its vitamin content exceeds that of refrigerated vegetables.
This may also be a good example for future agricultural development. Moreover, the LED grow lights that is famous for energy conservation and environmental protection also will occupy an important position in future agriculture.
2018年10月12日星期五
Four points to note about home lighting #4
It is well known that different colors can reflect a person's personality to some extent. The same goes for home lighting, the different arrangement of light colors can create various lighting atmosphere and partly mirror the character and aesthetics of the user. Nevertheless, too many colors in house-lighting will make it look like incongruous as well as can't reflect the lighting style well. Furthermore, if the difference between colors is too large, it will make people who live in such a lighting environment have the uneasy and unnatural feeling.
Some user like the colorful and dynamic lighting effects of outdoor advertising, and imitate them into their house. Excessive use of RGB LED light strips, colorful spotlights, and other muti-colors lights, even though seem very magnificent, in the long term, these colorful, flickering, changing lighting effects have the negative influence on vision. This kind of LED lights is applied extensively in advertising lighting, for its dynamic light can easily draw people's attention and we won't be in this light environment for long. Therefore, the lighting arrangement of different places is different, and other lighting plans should not be directly copied. Surely, there are a thousand Hamlets in a thousand people's eyes. In normal home lighting, in order to create a comfortable and harmonious lighting environment, we suggest that take the white-light LED lights as the main lighting of the house and decorate with a few of other colors of light. If dynamic, colorful lighting is required, it can be installed separately and controlled independently.
This is the last article of HOUSE-LIGHTING series. We hope these will help you in the selection of LED lights and arrangement of home-lighting.
Some user like the colorful and dynamic lighting effects of outdoor advertising, and imitate them into their house. Excessive use of RGB LED light strips, colorful spotlights, and other muti-colors lights, even though seem very magnificent, in the long term, these colorful, flickering, changing lighting effects have the negative influence on vision. This kind of LED lights is applied extensively in advertising lighting, for its dynamic light can easily draw people's attention and we won't be in this light environment for long. Therefore, the lighting arrangement of different places is different, and other lighting plans should not be directly copied. Surely, there are a thousand Hamlets in a thousand people's eyes. In normal home lighting, in order to create a comfortable and harmonious lighting environment, we suggest that take the white-light LED lights as the main lighting of the house and decorate with a few of other colors of light. If dynamic, colorful lighting is required, it can be installed separately and controlled independently.
This is the last article of HOUSE-LIGHTING series. We hope these will help you in the selection of LED lights and arrangement of home-lighting.
2018年10月9日星期二
Four points to note about home lighting #3
From last two posts, Four points to note about home lighting #1, and #2, we learned that the brightness and CCT are the key factors that we need to notice when select and install home lighting. The different brightness and different color temperature can create a completely different home lighting atmosphere.
In post #1, we are mentioned that the luminous difference between different rooms should be controlled in the reasonable range. Our eyes will be uncomfortable and fatigued by frequently adapt to very different brightness. Post #1 represented the overall brightness of the house need to be unified. Not only the whole, as well as the small areas need to pay attention to the contrast between light and dark.
Nowadays, decorative lighting became an important part of interior lighting. Most people like to decorate the living room with LED spotlights, LED strips and other decorative lights. In general, the decorative lights are not high-brightness, which can not provide enough light for our lives. For example, if we only turn on the decorative lights on TV background wall when watching TV at night, the strong contrast of light and dark will cause the eyestrain, even vision impairment in the long run. Likewise, it is also a bad habit that reading under a small desk lamp for a long time. The low-brightness LED light strips are the popular decorative lights in the bedroom, which can also be used as the auxiliary lighting, helping us see and it doesn't dazzling. Furthermore, adding the controller to dim the LED strips also a good method, which allows us to vary the brightness according to the actual requirement.
In short, the brightness of indoor lighting should be reasonable and similar.
In post #1, we are mentioned that the luminous difference between different rooms should be controlled in the reasonable range. Our eyes will be uncomfortable and fatigued by frequently adapt to very different brightness. Post #1 represented the overall brightness of the house need to be unified. Not only the whole, as well as the small areas need to pay attention to the contrast between light and dark.
Nowadays, decorative lighting became an important part of interior lighting. Most people like to decorate the living room with LED spotlights, LED strips and other decorative lights. In general, the decorative lights are not high-brightness, which can not provide enough light for our lives. For example, if we only turn on the decorative lights on TV background wall when watching TV at night, the strong contrast of light and dark will cause the eyestrain, even vision impairment in the long run. Likewise, it is also a bad habit that reading under a small desk lamp for a long time. The low-brightness LED light strips are the popular decorative lights in the bedroom, which can also be used as the auxiliary lighting, helping us see and it doesn't dazzling. Furthermore, adding the controller to dim the LED strips also a good method, which allows us to vary the brightness according to the actual requirement.
In short, the brightness of indoor lighting should be reasonable and similar.
2018年10月8日星期一
Four points to note about home lighting #2
From the last post, FOUR POINTS TO NOTE ABOUT HOME LIGHTING #1, we knew that the significance of selecting the proper brightness in home lighting. In this post, we are going to introduce that the influence of the CCT (Correlated Color Temperature), one of the main specifications of LED lights, in-house lighting. Just like brightness, different colors of light can bring about a completely different indoor lighting environment. As we all know, the reddish white light, that is, the warm white light will make people feel relaxed and easeful, and the bluish cool white light is beneficial to concentration.
Therefore, it is improper that select the same CCT LED lights in all space of the house. Although the warm white LED light can create a warm and comfortable lighting atmosphere, it is not suitable for the activities that require concentration. Based on this reason, the living room, home office, and kitchen all are the main activity space, which is suitable for neutral white light or the slightly higher CCT LED lights. Likewise, according to the function of the bedroom and bathroom, adopting warm color lighting will be the better choice.
In the posts #1 and #2, we introduced the effect of brightness and CCT respectively in home lighting. From which, we can conclude that both the brightness and the CCT of LED lighting are the key factors to create a reasonable home lighting environment.
Therefore, it is improper that select the same CCT LED lights in all space of the house. Although the warm white LED light can create a warm and comfortable lighting atmosphere, it is not suitable for the activities that require concentration. Based on this reason, the living room, home office, and kitchen all are the main activity space, which is suitable for neutral white light or the slightly higher CCT LED lights. Likewise, according to the function of the bedroom and bathroom, adopting warm color lighting will be the better choice.
In the posts #1 and #2, we introduced the effect of brightness and CCT respectively in home lighting. From which, we can conclude that both the brightness and the CCT of LED lighting are the key factors to create a reasonable home lighting environment.
2018年10月7日星期日
Four points to note about home lighting #1
Home lighting is an important part of our house. With the development of LED technology, LED lights are applied in our house for illumination and decoration such as LED bulbs, LED tubes, LED Panel Lights, LED strip lights and so on. House lighting allows us to live like we do during the day, as well creates different atmosphere through different lights. But there are a few matters needing attention in the choice of illumination lights. Using lights incorrectly not only wastes electric energy and cost but also have a negative influence on our lives. We will cover this topic in four parts because there is too much content, hoping the posts will be helpful to you.
In this post, we are going to talk about the brightness, the most obvious factor, that has the biggest effect on human sense. As we all know, our eyes had better not often work in areas that are too bright or too dark. Because of the hard light will hurt our eyes, and the dim light makes people unable to see clearly, which result in eyestrain. Therefore, it is necessary to design different lighting schemes according to the structure of the house to achieve the proper brightness.
The functional areas inside the house have different lighting requirements. For example, the living room is an area for daily activities and entertainment, which determines that it needs to be the bright environment. Similarly, other areas of daily activity, such as the dining room, home office, reading room etc., require relatively high brightness to meet the needs. However, the light in the bedroom cannot be too bright, for it is the place for rest and the bright light is not good for sleep. Likewise, the soft light will be more suitable for the bathroom.
Furthermore, it has to be taken into account that although the above shows that various areas need different illumination intensity, the brightness of different places in a house should not be too different. Because the difference in brightness is so great, our eyes need to adjust to different brightness frequently, which can lead to eye fatigue and affect vision.
In this post, we are going to talk about the brightness, the most obvious factor, that has the biggest effect on human sense. As we all know, our eyes had better not often work in areas that are too bright or too dark. Because of the hard light will hurt our eyes, and the dim light makes people unable to see clearly, which result in eyestrain. Therefore, it is necessary to design different lighting schemes according to the structure of the house to achieve the proper brightness.
The functional areas inside the house have different lighting requirements. For example, the living room is an area for daily activities and entertainment, which determines that it needs to be the bright environment. Similarly, other areas of daily activity, such as the dining room, home office, reading room etc., require relatively high brightness to meet the needs. However, the light in the bedroom cannot be too bright, for it is the place for rest and the bright light is not good for sleep. Likewise, the soft light will be more suitable for the bathroom.
Furthermore, it has to be taken into account that although the above shows that various areas need different illumination intensity, the brightness of different places in a house should not be too different. Because the difference in brightness is so great, our eyes need to adjust to different brightness frequently, which can lead to eye fatigue and affect vision.
2018年10月5日星期五
The main materials of LEDs
The LED is mainly composed of six materials: base, silver glue, chip, bond wire, epoxy resin, and phosphor.
1. LED base:
The base, also known as the LED support and LED bracket, inside the LED is used for conducting and supporting, which is generally formed by electroplating of the metal material. There are two types of LED base, that is, cup-shaped brackets and flat brackets, which are applied for concentrated-light LEDs and wide-angle LEDs respectively.
2. Sliver glue:
The role of silver glue is to immobilize the chip and conduct electricity. The proportion of the main components is 75-80% for silver powder, 10-15% for EPOXY and 5-10% for additives.
3. Chip:
The chip is a luminescent semiconductor material, generally produced by using GaP, GaAlAs, GaAs, GaN, etc., and its internal structure has unidirectional conductivity. Due to the chip can not emit white light directly, the white light LED is a mixture of a blue-light chip and a yellow phosphor.
4. Bond wire:
The bond wire is a metal wire used to connect the wafer PAD and the holder. In production, gold wires with a purity of 99.99% are generally used, its specifications are 0.9 mils, 1.0 mils, and 1.1 mils etc.
5. Epoxy resin:
The role of the epoxy resin is to protect the internal structure of the LED and slightly change the color, brightness, and beam angle.
6. Phosphor:
At present, most of the white LED light strips, LED bulbs, LED spotlights, etc. are phosphor conversion LEDs, that is, the blue light emitted by the chip is converted into white light by the corresponding phosphor. The phosphor conversion LED has a simple circuit, low production cost, and good heat dissipation, and is dominant in the current LED product market.
The original site:
http://www.mldrled.com/news/
1. LED base:
The base, also known as the LED support and LED bracket, inside the LED is used for conducting and supporting, which is generally formed by electroplating of the metal material. There are two types of LED base, that is, cup-shaped brackets and flat brackets, which are applied for concentrated-light LEDs and wide-angle LEDs respectively.
2. Sliver glue:
The role of silver glue is to immobilize the chip and conduct electricity. The proportion of the main components is 75-80% for silver powder, 10-15% for EPOXY and 5-10% for additives.
3. Chip:
The chip is a luminescent semiconductor material, generally produced by using GaP, GaAlAs, GaAs, GaN, etc., and its internal structure has unidirectional conductivity. Due to the chip can not emit white light directly, the white light LED is a mixture of a blue-light chip and a yellow phosphor.
4. Bond wire:
The bond wire is a metal wire used to connect the wafer PAD and the holder. In production, gold wires with a purity of 99.99% are generally used, its specifications are 0.9 mils, 1.0 mils, and 1.1 mils etc.
5. Epoxy resin:
The role of the epoxy resin is to protect the internal structure of the LED and slightly change the color, brightness, and beam angle.
6. Phosphor:
At present, most of the white LED light strips, LED bulbs, LED spotlights, etc. are phosphor conversion LEDs, that is, the blue light emitted by the chip is converted into white light by the corresponding phosphor. The phosphor conversion LED has a simple circuit, low production cost, and good heat dissipation, and is dominant in the current LED product market.
The original site:
http://www.mldrled.com/news/
2018年10月4日星期四
The aluminum substrate of LED light strips
Presently, the heat dissipation of LED strips is one of the major issues for LED light strips companies. The aluminum substrate is used to overcome the difficulty, for it has the great thermal conductivity and excellent heat dissipation. The substrate is a unique copper clad laminate with good thermal conductivity, electrical insulation properties, and machinability. The PCB should be mounted close to the metal base as far as possible to lessen the thermal resistance.
Initially, the features of the aluminum PCB.
1. Using surface mount technology (SMT).
2. The particular circuit design is beneficial for heat diffusion.
3. The lower working temperature of LED lights, improve the dependability, as well as increase service life.
4. Decreasing sizes of the product, and costs of hardware and assembly.
5. Having better mechanical durability than other traditional substrates.
The aluminum-based PCB consists of the copper foil, the thermally conductive insulation layer and the metal plate, and its composition is classified into 3 layers:
1. Circuit layer: it is the same as normal copper clad, and its thickness is 1oz to 10oz.
2. Dielectric layer: also known as the insulation layer, is a low thermal resistance material covering on the LED light strip.
3. Base layer: it is a metal board, usually aluminum or copper.
The circuit layer is the printed circuit that used to connected different components. In most cases, the circuit layer needs to have a large current carrying ability, so that the thick copper foil should be utilized.
The heat conductive insulation layer is the key of the aluminum PCB, which has small heat resistance, great viscoelasticity, resistance to heat aging, and can resist physical and thermal stress.
The metal plate is the base of the substrate, which is needed to has great thermal conductivity. In production, aluminum plate and Copper plates are most commonly applied, which suited to traditional machinings including drilling, punching, and cutting etc.
Aluminum PCB materials have advantages that are unmatched by other materials, such as no need for a heat sink, greatly reduced sizes of LED lights, excellent heat dissipation, good insulation, and mechanical properties etc.
Initially, the features of the aluminum PCB.
1. Using surface mount technology (SMT).
2. The particular circuit design is beneficial for heat diffusion.
3. The lower working temperature of LED lights, improve the dependability, as well as increase service life.
4. Decreasing sizes of the product, and costs of hardware and assembly.
5. Having better mechanical durability than other traditional substrates.
The aluminum-based PCB consists of the copper foil, the thermally conductive insulation layer and the metal plate, and its composition is classified into 3 layers:
1. Circuit layer: it is the same as normal copper clad, and its thickness is 1oz to 10oz.
2. Dielectric layer: also known as the insulation layer, is a low thermal resistance material covering on the LED light strip.
3. Base layer: it is a metal board, usually aluminum or copper.
The circuit layer is the printed circuit that used to connected different components. In most cases, the circuit layer needs to have a large current carrying ability, so that the thick copper foil should be utilized.
The heat conductive insulation layer is the key of the aluminum PCB, which has small heat resistance, great viscoelasticity, resistance to heat aging, and can resist physical and thermal stress.
The metal plate is the base of the substrate, which is needed to has great thermal conductivity. In production, aluminum plate and Copper plates are most commonly applied, which suited to traditional machinings including drilling, punching, and cutting etc.
Aluminum PCB materials have advantages that are unmatched by other materials, such as no need for a heat sink, greatly reduced sizes of LED lights, excellent heat dissipation, good insulation, and mechanical properties etc.
2018年9月27日星期四
The effect of LED grow light on plant senescence
Chlorophyll degradation, rapid protein loss, and RNA hydrolysis during plant senescence are mainly characterized by leaf senescence. Chloroplasts are hypersensitive to the change of surrounding light. The red light, blue light, and red-blue mixed light are conducive to the formation of chloroplasts. Blue light is helpful to increase the starch granules in chloroplasts. Red light and far-red light inhibit the development of chloroplasts. The red-blue light can boost the synthesis of chlorophyll in cucumber seedling leaves and also delay the attenuation of chlorophyll content in the later stage. This effect is more obvious with the decrease of red light ratio and the increase of blue light ratio. The chlorophyll content of cucumber seedlings under LED red-blue combined light treatment was significantly higher than monochromatic red and blue light treatment. LED blue light could significantly increase the chlorophyll a/b value of black-spotted and green garlic seedlings.
During the leaf senescence, the content and activities of cytokinin (CTK), auxin (IAA), abscisic acid (ABA) are changed. Different light qualities have different effects on phytohormones. CTK stimulates leaf cell growth, promotes photosynthesis, inhibits the activity of ribonuclease, deoxyribonuclease and protease, and slowdowns the degradation of nucleic acids, proteins and chlorophyll, hence slowing leaf senescence. IAA is principally centered in the region where growth is strong. Violet light can increase the activity of indoleacetic oxidase, and low IAA levels prevent elongation. ABA is generally produced in senescent leaf tissues, mature fruits, seeds, stems, and roots. Compare with the white light and blue light, the red-blue LED grow light will decrease the ABA content of cucumber and cabbage to a greater extent.
Peroxidase (POD), superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) are important and photoconductive protective enzymes. In the process of plant aging, the activity of these enzymes will decrease rapidly. The effects of different light qualities on the antioxidant enzyme activities of plants were significant. Illumination rapeseed seedlings for 9 days with red light, APX activity increased significantly and POD activity decreased. After 15 days of red and blue light irradiation, the POD activity of tomato was higher than that of white light 20.9% and 11.7% respectively. After 20 days of green light treatment, the POD activity was the lowest, only 55.4% of white light. For cucumber seedling leaves, blue light can obviously boot the soluble protein content and increase the activities of POD, SOD, APX, and CAT. Furthermore, the activity of SOD and APX gradually decreased with the extension of illumination time. The activity of SOD and APX under blue light and red light decreased slowly but were always higher than white light. Red light irradiation significantly reduced the activity of IAA peroxidase in tomato leaves, such as peroxidase, IAA peroxidase, and eggplant leaves, but caused the peroxidase activity of eggplant leaves to increase significantly. Therefore, the use of reasonable LED grows light strategy can effectively delay the aging of plants.
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| COB LED red-blue combined plant grow light |
During the leaf senescence, the content and activities of cytokinin (CTK), auxin (IAA), abscisic acid (ABA) are changed. Different light qualities have different effects on phytohormones. CTK stimulates leaf cell growth, promotes photosynthesis, inhibits the activity of ribonuclease, deoxyribonuclease and protease, and slowdowns the degradation of nucleic acids, proteins and chlorophyll, hence slowing leaf senescence. IAA is principally centered in the region where growth is strong. Violet light can increase the activity of indoleacetic oxidase, and low IAA levels prevent elongation. ABA is generally produced in senescent leaf tissues, mature fruits, seeds, stems, and roots. Compare with the white light and blue light, the red-blue LED grow light will decrease the ABA content of cucumber and cabbage to a greater extent.
Peroxidase (POD), superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) are important and photoconductive protective enzymes. In the process of plant aging, the activity of these enzymes will decrease rapidly. The effects of different light qualities on the antioxidant enzyme activities of plants were significant. Illumination rapeseed seedlings for 9 days with red light, APX activity increased significantly and POD activity decreased. After 15 days of red and blue light irradiation, the POD activity of tomato was higher than that of white light 20.9% and 11.7% respectively. After 20 days of green light treatment, the POD activity was the lowest, only 55.4% of white light. For cucumber seedling leaves, blue light can obviously boot the soluble protein content and increase the activities of POD, SOD, APX, and CAT. Furthermore, the activity of SOD and APX gradually decreased with the extension of illumination time. The activity of SOD and APX under blue light and red light decreased slowly but were always higher than white light. Red light irradiation significantly reduced the activity of IAA peroxidase in tomato leaves, such as peroxidase, IAA peroxidase, and eggplant leaves, but caused the peroxidase activity of eggplant leaves to increase significantly. Therefore, the use of reasonable LED grows light strategy can effectively delay the aging of plants.
2018年9月26日星期三
Blue light chip in the white light LED
In normal conditions, white light LEDs have a blue light source. An ordinary white-light LED is consisted of the blue-light LED chip and the fluorescent substance. It works very simply, that is the chip illuminates blue-light to the fluorescent powders to emit the white light.
In the 1960s and 1970s, red and green LEDs were successively created. However, the blue-light chip has still not been invented, for it has greater photon energy, and is difficult to grow blue-light materials. Due to the difficulties and cost, a lot of institutes quit. However, two Japanese researchers who keep working at it and eventually invented blue-light LEDs for the first time in 1989. At that time, the light was very weak and had no practical application value, but it gave people hope of developing blue-light LEDs. Finally in 1993, a staff of Nichia, Nakamura Shuji invented the high-brightness blue-light chips technology. Thanks to this technology, the white light LED lighting has really stepped out of the laboratory into practical production and application. Today we can conclude that, without the blue-light chip, white-light LEDs is extremely hard to popularize.
There is some date show the influences that the blue-light LED brought to our lives and environment. According to relevant information, the worldwide annual electricity consumption is about 200 billion kWh, of which about 19% is used for lighting. Imagine if all incandescent lights (electrical conversion rate of about 10%), fluorescent lights (electrical conversion rate of about 30%) are replaced with white LED energy-saving lights (electrical light conversion rate of 50% or more), then a minimum of 1.52 billion kWh of electrical energy is saved on a yearly basis. Furthermore, it reduces coal consumption by about 500 million tons, reduces carbon dioxide emissions by about 1.3 billion tons, and reduces sulfur dioxide emissions by about 4.2 million tons. These tangible data highlight the significance of the blue light LED.
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| Whit light SMD LED |
In the 1960s and 1970s, red and green LEDs were successively created. However, the blue-light chip has still not been invented, for it has greater photon energy, and is difficult to grow blue-light materials. Due to the difficulties and cost, a lot of institutes quit. However, two Japanese researchers who keep working at it and eventually invented blue-light LEDs for the first time in 1989. At that time, the light was very weak and had no practical application value, but it gave people hope of developing blue-light LEDs. Finally in 1993, a staff of Nichia, Nakamura Shuji invented the high-brightness blue-light chips technology. Thanks to this technology, the white light LED lighting has really stepped out of the laboratory into practical production and application. Today we can conclude that, without the blue-light chip, white-light LEDs is extremely hard to popularize.
There is some date show the influences that the blue-light LED brought to our lives and environment. According to relevant information, the worldwide annual electricity consumption is about 200 billion kWh, of which about 19% is used for lighting. Imagine if all incandescent lights (electrical conversion rate of about 10%), fluorescent lights (electrical conversion rate of about 30%) are replaced with white LED energy-saving lights (electrical light conversion rate of 50% or more), then a minimum of 1.52 billion kWh of electrical energy is saved on a yearly basis. Furthermore, it reduces coal consumption by about 500 million tons, reduces carbon dioxide emissions by about 1.3 billion tons, and reduces sulfur dioxide emissions by about 4.2 million tons. These tangible data highlight the significance of the blue light LED.
2018年9月25日星期二
Effects of LED Grow Light on Nutritional Quality of Fruits and Vegetables
The proteins, carbs, organic acids and vitamins in fruits and vegetables are good for human health. Light quality can influence the content of VC in crops through controlling the activity of VC synthesis and decomposing enzymes, in addition, to regulate the protein metabolism and carbs buildup in horticultural plants. Red light stimulates the accumulation of carbs, and blue light is helpful to protein structure, while the mixture of red and blue light has an appreciably greater influence on the nutritional quality of plants than single color light. For lettuce, LED red or blue light can decrease the nitrate, applying blue or green light can boost the amount of soluble sugar, and replenishing infrared light is effective to promote the VC synthesis. For tomato growing, blue light LED grow lights can enhance the content of VC and soluble protein. The mix of red and blue light and red light can increase the value sugar and acid. Furthermore, red and blue combined light can raise the VC content in
cucumber.
The phenolic substances, flavonoids, anthocyanins and other substances contained in fruits and vegetables do not merely have a significant effect on the color, flavor and commercial value of vegetables and fruits as well as have natural antioxidant activity, which can effectively inhibit or eliminate free radicals in human body. The use of LED grow lights with blue light can truly improve the anthocyanin of eggplant by 73.6%, while utilizing of LED red light, red and blue mixed light can increase flavonoids and total phenolic content. Blue light can increase the content of lycopene, flavonoids, and anthocyanins in tomato. The combination of red and blue light advances the creation of anthocyanins but prevents the synthesis of flavonoids. In contrast to the white light LED plant lights, red light can enormously boost the anthocyanin content in the upper part of lettuce, nevertheless, the blue light treated lettuce has the lowest anthocyanin content. The entire phenolic content of green leaf, purple leaf, and red leaf lettuce had greater amounts under white light, red and blue combined light, and blue light, but the smallest value under red light. Supplementing LED UV or orange light can raise the value of phenolic compounds in lettuce leaves while providing green light can increase anthocyanin content.
Consequently, the effective use of LED grow lights with suitable color is a useful method to enhance the nutritional quality of facilities fruits and vegetables.
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| LED plant grow light with red and blue combined light |
The phenolic substances, flavonoids, anthocyanins and other substances contained in fruits and vegetables do not merely have a significant effect on the color, flavor and commercial value of vegetables and fruits as well as have natural antioxidant activity, which can effectively inhibit or eliminate free radicals in human body. The use of LED grow lights with blue light can truly improve the anthocyanin of eggplant by 73.6%, while utilizing of LED red light, red and blue mixed light can increase flavonoids and total phenolic content. Blue light can increase the content of lycopene, flavonoids, and anthocyanins in tomato. The combination of red and blue light advances the creation of anthocyanins but prevents the synthesis of flavonoids. In contrast to the white light LED plant lights, red light can enormously boost the anthocyanin content in the upper part of lettuce, nevertheless, the blue light treated lettuce has the lowest anthocyanin content. The entire phenolic content of green leaf, purple leaf, and red leaf lettuce had greater amounts under white light, red and blue combined light, and blue light, but the smallest value under red light. Supplementing LED UV or orange light can raise the value of phenolic compounds in lettuce leaves while providing green light can increase anthocyanin content.
Consequently, the effective use of LED grow lights with suitable color is a useful method to enhance the nutritional quality of facilities fruits and vegetables.
2018年9月24日星期一
Matters needing attention for LED strips installation
In the marketplace and on the web, many people sometimes asking why the LED strips' brightness is lower, the lifetime is shorter in the abnormal range than the theoretical value provided by the supplier. There are various causes of this condition, apart from some dishonest businesses sell seconds at best quality prices, the incorrect use is the major factor. Therefore, it is necessary to pay our attention to numerous issues during install for the LED lights.
Firstly, the wiring way of LED light strips. The most of LED light bars are adopt input voltage of DC12V or DC24V, which must be powered by the matching power supply. The total power must be greater than the sum of the connected LED lights. The wiring of the LED tapes needs to be correctly welded by anode and cathode. Commonly, LED light strips producers will clearly mark the anode (+) and cathode (-) beside the bonding pad as well as solder the wires in one end or both ends. Furthermore, if you want to save money on the power supply, there is a cost-effective choice that you can parallel connect the LED strips, and just need a matched high power supply.The second thing is the connection of the controller. RGB LED lights need to connect with the controller to realize various lighting effects. The three chips in the RGB LED usually share one positive pole, so the RGB LED tapes to have one "+" bonding pad and three "-" bonding pads. Different controllers have different control distance. The farthest distance of ordinary controller is 10 to 15 meters, some better controllers are about 20 meters and the best's remote distance up to 30 meters.
Last but not least, the total length of the LED strips. In most cases, we suggest a parallel connection, for the overlong series connection length, will case the brightness reducing and excess temperature. LED lights' working lifetime will be dramatically reduced in the excessive temperature condition.
Consequently, at the time of installation, we must follow the relevant instructions and requirements.
2018年9月20日星期四
Influences of LED plant lights on the horticultural plants
The control of light on plant growth includes seed germination, stem elongation, leaf and root improvement, phototropism, chlorophyll synthesis and decomposition, and flower induction. The light environment features in the facility include illumination intensity, photoperiod, and spectral distribution. The man-made supplemental light can direct controls these light features without being affected by the weather.
Plants absorb specific light and use different photoreceptors to identified different light signals. At present, there are three types of photoreceptors are found in plants, including a Photosensitive element (absorbing red and far-red light), Cryptochrome (absorbing blue light and near-ultraviolet light), and ultraviolet light receptors (absorbing UV-A and UV-B). Illuminating the plants by LED plant grow lights with particular wavelength can boost the photosynthesis, increase the growth and improvement of the plant.
Photosynthesis mostly applies red-orange light (610-720nm) and blue-violet light (400-510nm). It can be realized by LED manufacturing technology that emitting single color light with a particular wave crest according to the wavelength band that the chlorophyll has the strongest absorption. Nowadays, based on relevant experiments, we knew that the red-orange light will benefit the plants' growth, dry matter's accumulation, organic formation, as well as promote precocious flowering and fruiting. The Blue-violet light can regulate the phototropism of leaf, boost stomatal opening, chloroplast activity and boost organs development, meanwhile inhibit stem elongation, control over growth and postpone flowering. The red and blue mixed LED grow lights have a lot of advantages that the single color light have not, it can release the specific spectrum that basically facilitates photosynthesis and morphogenesis. The energy efficiency is outstanding and the light energy utilization is able to get 80% to 90%.
In the facility gardening production, LED plant grow lights have a great promoter action. In the entire growing period of time, controlling light quality, intensity, and lighting period by LED plant lights, can lessen the growth cycle, enhance the yield, nutritive value and form value of agricultural products, as well as realize efficient, economical and intelligent manufacturing of facility horticultural plants.
Plants absorb specific light and use different photoreceptors to identified different light signals. At present, there are three types of photoreceptors are found in plants, including a Photosensitive element (absorbing red and far-red light), Cryptochrome (absorbing blue light and near-ultraviolet light), and ultraviolet light receptors (absorbing UV-A and UV-B). Illuminating the plants by LED plant grow lights with particular wavelength can boost the photosynthesis, increase the growth and improvement of the plant.
Photosynthesis mostly applies red-orange light (610-720nm) and blue-violet light (400-510nm). It can be realized by LED manufacturing technology that emitting single color light with a particular wave crest according to the wavelength band that the chlorophyll has the strongest absorption. Nowadays, based on relevant experiments, we knew that the red-orange light will benefit the plants' growth, dry matter's accumulation, organic formation, as well as promote precocious flowering and fruiting. The Blue-violet light can regulate the phototropism of leaf, boost stomatal opening, chloroplast activity and boost organs development, meanwhile inhibit stem elongation, control over growth and postpone flowering. The red and blue mixed LED grow lights have a lot of advantages that the single color light have not, it can release the specific spectrum that basically facilitates photosynthesis and morphogenesis. The energy efficiency is outstanding and the light energy utilization is able to get 80% to 90%.
In the facility gardening production, LED plant grow lights have a great promoter action. In the entire growing period of time, controlling light quality, intensity, and lighting period by LED plant lights, can lessen the growth cycle, enhance the yield, nutritive value and form value of agricultural products, as well as realize efficient, economical and intelligent manufacturing of facility horticultural plants.
2018年9月18日星期二
The difference between high power and low power LEDs
LEDs are the pointolite, different from compact fluorescent and incandescent lamps in the marketplace. The pointolite, as the name suggests, is a light source that glows evenly from a point to the surrounding space.
Generally, the specifications of most low-power LEDs are 0.1 watts, 0.2 watts, and 0.3 watts, of which a 0.3 watt LED's luminous flux reach up to 45lm. Therefore, we call the LED with a power of 0.5 watts or more as the high-power LED, of which a 0.5 watt LED can reach up to 60 lm and a 1 watt LED's maximal luminous flux is 110 lm. That is the difference in lumination between the two.
If you're looking for lighting products that apply to your house, then the low-power LEDs will be satisfactory, but in advertising lighting, outdoor lighting and other public lighting, high-power LEDs would be a better choice.
Economically, the price of high-power LEDs is commonly more expensive. High-power LEDs have higher energy consumption, higher lumination, and more heat production. In order to ensure the reliable quality and long working lifetime, LED lights manufacturers must use materials with high heat dissipation efficiency and superior quality, such as gold wires, copper-bases, highly conductive PCB and so on.
With the progress of relevant production technology, the LED with power exceeding 200 watts can be manufactured by the LED lights factory. However, the cost performance of these ultra high-power LEDs is too low to popularize. Presently, the LED strip lights with 0.5 watt LEDs is one of the top sellers LED strips, for its moderate price, high brightness, good heat dissipation, and wide applicability. The LED strips made of 0.5 watt LEDs can be applied to indoor lighting, outdoor lighting, advertisement lighting etc.
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