2019年1月31日星期四

Lighting affects employee productivity

According to media reports, a survey of 1,000 adults showed that 77% of respondents believe that workplace lighting will affect their productivity, 33% said that it is important to get natural light, and 32% said they Willing to work under artificial lighting that helps increase productivity.

Beyond that, it is worth noting that the vast majority of respondents tend to link the lighting conditions of their offices to their own work output. The survey results show that whether there is or not direct biological effects of light, humans at least psychologically respond to light.

Although the direct link between lighting and productivity has not been absolutely confirmed, relevant evidence and common sense indicate that productivity is significantly increased when workers are more satisfied with lighting conditions.

The findings are important for human lighting. Human lighting In the human-centered lighting design, the set scenes and different levels of illumination are varied within a day to match the human 24-hour circadian rhythm.

One expert said, “There are some smart LED lighting systems on the market that can help achieve the right mix of natural and artificial light, suitable for homes and workplaces.”

People-centered lighting has begun to dominate in the workplace but has made greater progress in the healthcare environment. For example, specially designed LED lighting helps to reduce the drug dependence of mental patients and improve dementia care.

The survey also found that at home, 31% of respondents believe that lighting is very important when creating a relaxed and quiet atmosphere before going to bed at night, and 38% believe that morning bedroom lighting can help them be energized.

2019年1月29日星期二

Xiamen's schools implement healthy lighting transformation to reduce myopia rate

The problem of myopia in primary and secondary school students has always been concerned by the society. According to statistics, the myopia rate of primary and middle school students in Xiamen is slightly higher than the national average. The primary school students have a myopia rate of about 50%, junior high school students about 70%, and high school students more than 80%. The high incidence of myopia and the trend of a younger age have seriously affected the physical and mental health of children. At the recent seminar of the light environment and eye health of Xiamen schools, experts proposed to further improve the lighting conditions in the classroom to protect the visual health of children and adolescents.

Qiu Aiming, the chief physician of the Xiamen City Primary and Secondary School Health Care Center, said that the health center collects data of more than 300,000 students each year. The data show that the health problems of Xiamen students are mainly myopia, dental caries (fangs) and obesity. Among them, the problem of myopia is the most prominent. There are many factors that cause myopia. From the research results, the transformation of lighting can significantly improve students' vision.

A study conducted by the Peking University Institute of Child and Adolescent Health showed that the classroom lighting renovation significantly improved the lighting environment of the classroom, to a certain extent, it can prevent the decline of vision of primary and secondary school students and reduce the new incidence of poor eyesight. It is understood that the Wuyuan Experimental School in 2014 changed the lighting of the two classrooms, transforming the original fluorescent lamps into LED lights without stroboscopic flash. In the summer of 2015, all the ordinary classrooms, special classrooms, teacher offices, and conference room lighting were replaced with stroboscopic LED lights. After three years of data comparison, the school’s myopia rate has dropped slightly in schools that have completed the classroom lighting renovation. It can be judged that the myopia rate has a lot to do with the lighting environment.

It is understood that more than 50 schools in Xiamen have implemented the healthy lighting environment renovation project.

2019年1月27日星期日

New discovery! LED can improve health

It is reported that Sandia National Laboratory researchers said that this kind of LED lighting is currently only in the initial stage, its light can be used as a signal for specific physiological responses of humans and plants. In short, LEDs offer many advantages for health, and this has not been discovered before.

Researchers said that the control of the time, space and spectral content of LED luminaires (which they call "engineering light") can trigger a variety of hormonal responses that can help regulate human health and productivity. Specific LED light wavelengths and intensities can also effectively stimulate plant growth, alter plant shape and increase its nutritional value. This will bring new possibilities for indoor planting.

Researcher Jeff Tsao said that this approach is not to ignore the convergence of LED and Internet of Things (IoT), LED has now integrated with the electronics, sensor and communications industries. The ever-expanding use of LEDs will bring greater value to society, far exceeding the energy saved by the housing and architectural lighting.

2019年1月24日星期四

How to identify whether a copper bracket or an iron bracket in the LEDs

The bracket is one of the most important components in SMD LED. The copper bracket has high thermal conductivity and heat dissipation, which is not easy to rust. The electrical conductivity of the iron bracket is poor, the heat dissipation is low relative to copper, and it is easy to oxidize and rust.

Many people think that magnets can be used to distinguish between iron brackets and copper brackets. In fact, there are two plating materials for the copper brackets, silver and nickel. This method will not work because nickel is attracted by a magnet

Copper has good thermal conductivity and heat dissipation ability, but it is easy to be corroded in the damp environment. Silver is used to increases the adhesion between the chip and the bracket. Moreover, due to the silver is a highly reflective material, the silver-plated layer is able to reduce light loss and increases reflection. Nickel is an approximately silver-white, hard and malleable material that is highly polished and resistant to corrosion and reduces undesirable reactions such as vulcanization. Therefore, it can be used in the copper brackets to prevent copper from migrating to the silver, and increase the strength of the brackets.

Therefore, the best way to identify the materials of the brackets is breaking the bracket. If the cross-section is purple and red, it is the copper bracket. If the color is silver and gray, it is the iron bracket.

2019年1月22日星期二

LED plant lights help French growers to increase cucumber production

A few days ago, Signify issued a press release announcing that two French vegetable growers have installed Signify's LED garden lighting in their greenhouses to help grow cucumbers throughout the year.

According to the company, Jardins Réunis and Cheminant installed the Philips GreenPower series of plant lights LED Toplight and LED Interlight in their new cucumber greenhouse (located in the Nantes region of France). The two are the first growers in France to use LED lamps to grow steel cucumbers, demonstrating their leadership as a member of the Océane grower cooperative.

Signify pointed out that LED grow lighting can help increase crop yields, and also allows growers to control light and temperature more precisely because LEDs do not generate excessive heat as the light increases. These features ensure the high-quality production of the crop throughout the year as efficiently as possible.

Antoine, a co-owner of Cheminant, said that LED plant lights provide better heat and light balance. Compared to high-pressure sodium lamps, LED lights can greatly increase production without generating heat. According to the calculation, Cheminant's 20,000 square meters semi-enclosed greenhouse is illuminated with LED lights, and the output will be 30% higher than the output of traditional greenhouses without LED grow lights.

Vincent Olivon, co-owner of Jardins Réunis, said that the planting experts can provide good advice and support. LED lighting will help companies improve energy efficiency and reduce production gaps, especially in the winter when revenues are greater. This plays a key role in maintaining the company's position in the market throughout the year.

It is reported that similar to Jardins Réunis and Cheminant, a French Philips Horti LED certified partner Eiffage énergie Systèmes installed Philips LED Toplight (145 μmol/s/m2) and LED Interlight in its 25,000 m2 greenhouse in November 2018. (67 μmol/s/m2).

2019年1月20日星期日

What is the difference between a copper bracket and an iron bracket?

At present, there are many kinds of LED products on the market, and the products with the same brightness and parameters may have different prices. The main reason for the difference in price is the difference in their materials. Today we will introduce two main metal brackets in the LED strip lights' industry: copper brackets and iron brackets.

The SMD LED bracket is formed by PPA and metal. Normally, the bracket will be plated with silver to facilitate the light and connect with the LED gold wire. The functions of the bracket are carrying the chips, conducting the current, increasing the heat dissipation and protecting the internal structures.
Bracket (support) of SMD LED
The bracket of SMD LED

At present, the copper brackets and the iron brackets are the two main metal brackets in the industry. The resistivity and thermal conductivity of copper are 1.678 and 401 that are better than that of the iron's 9.71 and 80. We all know that the temperature is one of the major factors affecting the LED's life. The resistivity and the thermal conductivity of the bracket directly affect the lifespan of LED. The lower the LED resistivity, the higher the LED electro-optical conversion efficiency, the smaller the heat generation. The higher the LED thermal conductivity, the better the cooling effect.

It can be seen that the copper bracket is better than the iron bracket in quality. Besides, the high ductility of the copper brackets will also reduce the death rate of LEDs. Furthermore, due to the iron is easy to rust, once the iron is rusted, the silver-plated layer will fall off and the LED will be broken.

2019年1月17日星期四

The waterproof colloid of flex LED strip lights

Outdoor LED tape lights are widely used in urban beautification, architectural lighting, vehicle lighting, and other outdoor lightings. With the popularity of strip lighting, there are several materials are commonly used in waterproof encapsulating. At present, epoxy resin, polyurethane, and silicone are the three most common materials, which have their own different characteristics.

The epoxy resin generally has good light transmittance that is between 85 and 92%, which can be used in the environment with the temperature of -5 ° C to 55 ° C. Due to the TG point is low, the colloid of epoxy resin will easy to be broken when the environmental temperature exceeds the range. After the LED is lit for 700 hours, the epoxy resin will turn yellow gradually, affecting the brightness and CCT of LED beads.

Polyurethane, also called PU, has a light transmittance of 85-92% and good flexibility. After curing, the PU colloid can be used for a long time at -25 ° C to 95 ° C. With the decrease of the temperature, the flexibility of the LED strip will reduce. If the surface humidity of FPC is too high in production, the adhesion between the colloid and LED strips will greatly decrease.

Silicone has a light transmittance of 84% to 92%. The hardness can be adjusted in production. There is no significant change in the physical and optical properties of the product as it is used at -45 ° C to 200 ° C. Therefore, the silicon waterproof LED strip lights are very suitable for use in cold regions such as Russia, Northern Europe, North America, etc. Moreover, silicone light strips are resistant to ozone, ultraviolet light, acid, alkali, etc., which ensure the colloid will not turn yellow for a long time. But the problems are that its adhesion is lower than that of the epoxy resin and the cost is relatively high.

As a professional LED strip manufacturer, we hold the opinion that the silicone with better performance will have a bigger market share. Especially for the harsh using environments, it is necessary to use silicone waterproof LED strip lights.

2019年1月15日星期二

LED Light Strips' Situation and Improvement - Competition

Due to the continuous improvement of production capacity and the market space tends to be stable in recent years, the competition in the LED strip industry is getting fiercer. In order to grab the market, some LED lights suppliers only pursue lower costs and prices without paying attention to quality, resulting in an abnormal price war in the market.

At present, the whole market can be neatly divided into three levels: high, medium and low. High-level market mainly occupied by brand manufacturers. Most of the suppliers are in the mid-level market, whose products have reliable quality and reasonable prices. The low-level market is chaotic. Due to the production cost is very low, LED lights have no quality assurance, which led to the market has been in an unhealthy state of development.

In order to keep the healthy development of the LED strip market, more and more people have called on that the companies should pay attention to the quality and creation competition, instead of the price competition. MLDR CO., LTD. is a professional LED strip manufacturer in China, which has been committed to developing and producing products with reliable quality and competitive prices.

2019年1月13日星期日

LED Light Strips' Situation and Improvement - Light sources

LED lights are not only energy-saving and environmentally friendly but also have a wide range of applications, so they play an important role in all lighting fields. The market demand for LED strips is now very large, including household lighting, public lighting, indoor lighting, and outdoor lighting. At present, most LED strips use SMD LEDs as the light source. Common SMD LED models for LED strips are: 2835, 4014, 5050, 5630, 7030, 8520, etc., of which 2835, 5050 and 5630 are the most widely used and the most widely used.

The 2835 and 3528 are different, but they can use the same PCB. Compare with 3528, 2835 have higher brightness and better heat dissipation. Furthermore, SMD2835 LEDs are widely used as the light sources for the LED bulbs, panel lights, etc.

There are two types of 5050 LEDs: single color 5050 LED and 5050RGB LED. The SMD 5050 RGB LED is also called full-color LED, which contains three chips of different colors. The single color 5050 LED is typically packaged with three chips of the same color. The 5050 LED has better quality, but its cost also higher.

5630 LEDs have high brightness, uniform illumination, low light decay, long life, low power consumption, good heat dissipation, high light efficiency, strong antistatic, strong reliability, and safety. The chip in the 5630 LEDs has a larger chip size and higher brightness. However, the power of large chip LEDs is high, and heat dissipation must be considered.

2019年1月10日星期四

LED Light Strips' Situation and Improvement - Applications

LED lights have been developed for many years, its technology and market have stabilized. As the market space growth of LED lights has stabilized, and a lot of enterprises have joined the field in recent years, the market competition has become increasingly fierce.

According to the material classification of the PCB, the LED light strips are divided into the LED rigid strip and the LED flexible strip (LED tape light). Further subdivision, LED strips can be divided into high voltage LED strips and low voltage LED strips.

At present, there are two main applications for LED strip lights. The first one is indoor lighting, such as ceilings, TV backgrounds, cabinets, showcases, etc. Another one is outdoor lighting, such as the building, tree, advertising light box, etc.

Since the LED hard strips have good heat dissipation effect and long service life, they are widely used in places with high-quality requirements. LED tape lights are accepted by the average consumer in the market for their flexibility and convenience. Low-voltage LED strip lights are generally used in places with high safety requirements, such as public places and other places that people can easily reach. High-voltage LED strips are mainly used in the ceiling, air, and other places that people can't easily touch. Furthermore, since the low-voltage strip requires an additional transformer, its overall cost will be higher than that of the high-voltage light.

In fact, the applications of all these LED strips have no such very differences. In the vast majority of cases, they are universal. In order to seek breakthroughs and differentiation in this highly competitive market, more and more LED strip manufacturers are developing and producing professional LED strips for use in a specific field.

2019年1月8日星期二

Summary of LED grow lights in 2018

With the continuous development of modern agriculture, the demand and energy consumption of agricultural lighting is constantly expanding, and new challenges are also raised for traditional lighting technology. As a new generation of the light source, in addition to the characteristics of energy saving and environmental protection, LED has the advantages of the customizable spectrum, high color purity, and rich light color compared with fluorescent lamps or high-pressure sodium lamps.

LED technology has lower power consumption and can save a lot of energy costs compared with traditional plant lighting technology. LED grow lighting solutions can help growers increase yield by 25% and energy costs by 50%. The LED lights with a special spectrum not only optimizes the yield and growth time but also enhances the nutrients contained in the crop and improves its taste and flavor.

It can be seen that LED plant lighting can be designed into various types of light sources according to different crops, precisely controlling the growth of the plants.
LED strip grow lights in the vertical farm
With the continuous improvement of LED plant lighting technology, its application fields will become more and more extensive, including skyscraper tops, vertical farms, greenhouse canopies, homes, shopping malls, and even abandoned containers. According to the data of the Industry Research Institute, the global LED plant lighting market in 2018 is 190 million US dollars, with a growth rate of 26.7%.

According to the estimation of the scale of China's existing agricultural industry, the demand for agricultural LED lighting and its control equipment will reach several billion yuan in the next five years. The LED grow lights for plant factories and greenhouse will be the fastest growing LED lighting field with high technical content. It can be seen that with the increase in the penetration rate of global LED application agricultural lighting, the future market prospect is broad.

2019年1月3日星期四

How to select LED lights for the restaurants

First of all, we must know that the restaurant should use the LED lights with soft and natural light. The light with high color temperature will make the person's face look pale, and change the colors of the foods. But it doesn't mean there is no need cool-white LED lights in the restaurants. Arranging suitable lamps of different colors in different areas can increase the layering of space.

Secondly, we must know that the related auxiliary lighting also plays an important role in the dining environment. The common auxiliary lighting including spotlights, LED strip lights, LED curtain lights, wall lamps etc., which are usually used for decoration and creating atmosphere. Due to the main function of these lights are for decoration, so that their brightness must be lower than the main lights.

Finally, the whole lighting environment of the restaurant must be consistent. It is possible to use different colors of decorative lighting in different areas, but the subject color temperature should be consistent or similar.

MLDR CO., LTD. is a LED lighting manufacturer in China, providing high-quality LED strip lights to homes, restaurants, malls, etc. for decorative lighting.

2019年1月1日星期二

Why LED light strips lead the way in the lighting industry?

LED light strips, including LED hard strip lights and LED flexible tape lights, have become more and more important in the field of modern lighting. From the appearance point of view, LED strips are ultra-thin, energy-saving and environmentally friendly, and have a wide range of uses. It has been recognized by more and more consumers and has developed very well in the field of lighting.

LED strip lights
LED strip lights

The application of LED strip lights are very wide, from the home field to the office field to some special lighting fields, we can develop it. Nowadays, the market share of LED light strips in the LED lighting industry is really big. We can understand why LED strip lights can occupy such a huge market share from the following aspects:

Firstly, the LED light strips have taken the place of the traditional commercial lighting. Thanks to the variety and multi-function, LED light strips have replaced most of the market share of traditional fluorescent lights and energy-saving lights. Of course, strip lights manufacturers are still developing and producing new products with more functions.

Secondly, the products are becoming more and more popular. In fact, the applications of LED light strips have become blurred, some products are no longer limited to high-end commercial places, especially the LED tape lights, which are widely used as the personal decorative lighting in houses, gardens, etc.

Thirdly, the development cost continues to decrease. Since 2010, the patent of LED chip technology gradually thawed and the price of LED chip gradually decrease. As far as LED strip suppliers are concerned, it is beneficial to the development of products and markets. At that time, the LED market can further reduce the production cost through large-scale production.

Through the above analysis, we can know that the LED strip lights will become more and more popular in the future, and its stability will be further improved.