Analysis the present situation of LED flat panel light

With the improvement of people's living standards , people are increasingly demanding indoor lighting , not only reflected in the quality of products and energy , a sense of beauty and fashion lighting design also a factor for consideration . Unique LED Panel Light SMD LED as light source, light guide plate and add ( or ) the diffusion plate , so that uniform illumination , its slim design can not only provide lighting , and add artistic beauty, very popular in recent years .
Currently the main use of LED panel light occasions office lighting, classroom lighting, hospital lighting, hotel lighting , can also be used in showrooms, such as the family living room , decorated environment and create technology and fashion sense . At present , the main competitor for the LED panel light source based traditional fluorescent T5, T8 Grille , or is the LED light source with a hanging wire grille and office type lamps . But the price of LED panel lighting wholesale is much higher than the grille , almost line type lamps hanging close to the overall competitiveness of the market has not been fully reflected. According to the State Lighting R & D and Industry Alliance statistics , in 2010 China's LED flat light output of about 800,000 , the overall market size of nearly 600 million yuan , the proportion of exports in all kinds of lighting lower , about 36.8% , the production company focused on Shanxi, Guangdong , Shanghai and other regions, the combined effect of a larger industry . Volume production and application of LED panel lights are still small, has not yet formed a more consistent product specification form .
One , LED panel light classification
Depending on the classification, can be " nominal" to make the following classification for the LED panel light lamps on the market:
- By shape : LED panel light can be divided into squares, rectangles , circles, and other foreign inner circle ;
- By Size: Lamp size has to do around the grille to replace the grille for the purpose of 300mmx300mm, 300mmx600mm, 300mmx1200mm, 600mmx600mm the LED panel light ; there are alternative downlight 2 " , 2.5" , 3 ", 4 "and other LED panel light ;

Second, LED panel light advantages and disadvantages of
Direct- plate light relative to the side plate light emitting has the following advantages: First , high energy efficiency . The light emitted by the LED diffuser plate out of direct sunlight , improving the energy efficiency of lighting systems . According to reports , there 80lm / W or more products . Second , the cost is low. Eliminating a light guide plate to reduce the cost , the cost of such lamps , a large space inside , the design is more flexible. Third, reduce the lighting quality , because eliminating the light guide plate . Fourth , increased reliability . We know that in lighting design , the various components and properties of the materials used to determine the performance of lighting products , components increases, reducing the reliability . Therefore, if the diffusion plate using better quality , to ensure longer lamp life, and the light guide plate and the reflective film at high temperatures , yellow easy to aging effects of light efficiency and life. Direct- flat major downside is that the light can not be made too thin. Cost to have a certain pitch , otherwise LED lamps produce light diffusion plate between the highlights , which will inevitably lead to increased thickness of the lamp , the lamp housing followed increases, the appearance will seem poor lighting , and the thickness increases , the increasing the light transmission path , the energy efficiency of the lamp is reduced. Since the lamp beads are fixed on the rear panel , if the back with a whole piece of aluminum plate , then the cost will be high , if the strip of aluminum plate , fixed and positioning is also a problem. If the rear panel of the use of direct- plate lights Omo aluminum , but also consider long
Back issues after bending deformation time lifting.
Table 1 of the same side- power LED Downlight flat performance compared with conventional LED Downlight
LED flat panel downlight
Side plate lights shortage mainly :
First , energy efficiency is not very easy to do . Table 1 shows a comparison of the same power side LED Flat Downlight LED Downlight with traditional performance . As can be seen from the analysis, the same power side LED panel light on the light output , energy efficiency and color rendering index (CRI) and other performance indicators compared with conventional LED downlights still not a small gap.
Second, the high cost price . The light guide plate is the core of the side- plate lights ; due to the increase of the light guide plate , the price is higher than the direct type ;
Third, the high quality requirements for light guide plate , if designed properly, will appear in the middle light , dark sides , or into the light side of a bright side , or different angles brightness inconsistency phenomenon, affecting the quality of lighting .
Fourth, the reliability is relatively poor. Since the flat side of the light guide plate lamps , reflective film reflective inks and always at a relatively high temperature , it is easy to turn yellow aging , resulting in a light rate decreased greatly reduced lamp life .
Three , LED panel light Prospects
LED panel light though a good glare control , light uniformity , and many other advantages , but to replace LED panel lighting wholesale  also address the following questions:
First, the performance is low. For side LED panel light , low performance is still a problem . On the one hand , to achieve high brightness , the number of chips to be increased to improve the power saving effect , but does not reflect , in particular, large-sized flat lamp ; other hand , the power increases , the lighting apparatus of the LED module in the operating temperature will increase, the impact bad light and life, so how to deal with balance " thin" and " energy efficiency " between a problem.
Second, the price is high. To improve energy efficiency , LED quantity needs to be more , costs are increasing at the same time , it also brings how to deal with the heat. Meanwhile, the price is cheap and efficient light guide plate , compared with the traditional grid does not have to replace the price advantage. Moreover , with the light guide plate lights do cost a bit expensive , short-term consumer is difficult to accept.
Third, the maintenance easy. Unlike traditional fluorescent or LED Grille Grille , if the light source is broken, need not be very professional people you can easily replace one , while the LED panel light , if the light is insufficient or not bright colors may have to replace the entire luminaire , and those who need to come to a very professional operation and maintenance costs do not say , mainly too much trouble .
Fourth, public awareness is not enough, will inevitably affect the sales market. In addition, in the end what can be called a flat light fixture , the current lack of a unified identified . There are lights on the market called the flat , flat lights, panel lights , and some people believe that the outlook for flat planar light fixtures called flat light . In accordance with National Semiconductor Alliance "LED Panel Light ( a ) performance requirements" as defined in the draft : LED panel light : one to use as a surface emitting LED light source and lighting , lighting maximum thickness and smooth lines of the ( rectangular or square lamps the longest diagonal of the circular lamp diameter ) ratio of between 1 / 10 to 1 / 30 of the LED lamps. If you follow this definition , many LED downlights , LED fluorescent lamps with LED panel light and so become , it is unscientific .
Accordance with the " Indoor LED lighting technology specification - Part 2 : Flat Light" ( Shenzhen LED Industry Standards Alliance standard ), LED flat lighting is defined as : LED light source through the appropriate optical components to meet the needs of even the light from a plane device issued , according to LED panel light did not reflect the luminous characteristics. Common standards across the Taiwan Strait , " indoor general lighting LED flat lighting " in the definition LED flat lighting more accurately reflects the characteristics of LED flat lighting , but requires "total thickness not exceeding 70mm" can really be qualified to distinguish between traditional LED downlights and LED flat Down still open to question . Currently there are some phenomena mentioned plate lights , and asked how thin thickness or how high performance LED lamps have just before setting off on the performance of the domestic market, " vicious " race , as if LED panel light only by the performance indicators degree of thickness or performance indicators to determine the level of the individual , which is not desirable.
I personally think , LED panel light should not blindly pursue thickness design , and give up the characteristics of the product itself , shall be based on the safety of products , color quality , suitable brightness , light distribution , glare control , appearance , maintainable , price, comprehensive energy efficiency indicators for evaluation. One-sided, single indicator study may lead to market disturbances and reduce the reliability of the overall quality of the product , dampen consumer confidence. And LED panel light thin and can not do and then do better than thin oled lighting products , LED panel lights should therefore use LED own characteristics and advantages, to meet the practical needs and maximize energy efficiency under light premise of luminaire slim , personalized design , so as to occupy a place in future indoor general lighting and commercial lighting market .

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