The LED panel light derived from LED backlight has uniform light, no glare, and exquisite structure. It has been loved by many people. I have been designing and developing flat panel lamps for 2 years, talking about the design and precautions of flat panel lamps. I hope that Everyone can help. The structure of the surface light source mainly includes the following materials: Aluminum frame Appearance structure, and main structure of LED heat dissipation - generally use AL6063, aluminum extrusion die, low initial cost input, beautiful surface treatment, good heat dissipation effect. Some days ago, I also found that some manufacturers started to make die-casting frames, so IP rating Can be higher, and the light is better, the overall appearance is beautiful, but the cost of the initial investment in the mold is higher. 2. Diffusion plate The light of the light guide plate is evenly dispersed, and the function of shielding the mesh point is also used. The diffusion plate generally uses acrylic or 2.0 material, and the cost of the acrylic is lower and the light transmittance is slightly higher than that of the PC. The acrylic is brittle and resistant to aging. The performance is weak, the price of the PC is slightly expensive, but the anti-aging performance is strong. The diffuser plate cannot see the dots after being mounted, and the light transmittance is about 90%. Acrylic transmittance is 92%, PC is 88%. You can choose the diffuser material according to your needs, generally use acrylic materials. 3. Light guide plate The side LED light is deflected by the dot refraction to change the angle of the light. The light guide plate is the heart of the flat lamp. The dot design is very important. The dot design is not good. The overall light effect seen is very poor. Generally, the middle light will appear. Both sides are dark 2. There are bright edges when entering the light, and the dark is in the middle 3. Standing at different angles, the overall brightness is inconsistent 4. The local dark areas are obvious. The light effect of the light guide plate is very large in the design of the outlet, followed by the selection of the plate, but it is not right to pursue the brand of the brand. Because many brand manufacturers like Mitsubishi of Japan, most of the good plates are People order well, many Mitsubishi plates out of the market are mostly scraps, and their light transmittance is not as high as that of their own plates, so the choice of plates does not have to look at the manufacturers of the plates, as long as the test transmittance is high, the light effect is OK. In fact, it can be 4. Reflective paper Reflecting the back light on the back of the light guide - typically RW250 5. Rear cover Sealed lamp body - generally AL aluminum, the overall texture is strong, and can play a little heat dissipation 6.LED light source Generally used 3528, some people use 5630 and 5050, 5630 and 5050 are not efficient and the design of the dot is difficult, the versatility is poor, but the cost is low. 3528 high-efficiency network has high versatility. Generally, you can directly buy other light guides and do not need to re-sample. 7. Drive power Lamp driver - there are currently 2 power modes 1. Direct use of cross current power supply (this mode is high efficiency, PF value is up to 0.95, cost-effective) 2. Constant pressure with cross-flow mode (stable performance, but low efficiency, high cost) is generally used This mode is designed for customers who require certification, because the luminaire is a low-voltage luminaire with 24V input, no need to make safety regulations, and can be shipped to various countries by directly using a safety power supply. Problems to be aware of in the design and production process 1. The thinner the thermal conductive adhesive, the better. It is better to use the self-adhesive thermal adhesive, otherwise it will affect the thermal conductivity. 2. The selection of diffusing plate, many diffusing plates with smooth surface and matte surface are generally selected on the market. This diffusing plate has a disadvantage, the static electricity is large, and it is easy to suck in the production process to produce bright spots, and In the long-term use, dust will enter the lamp body through various ways, which will cause the lamps to be densely colored. In the early days, some people used a diffusing plate with double-sided diffusion. This diffusing plate has good light guiding effect and low static electricity, which can avoid the bright spot effect of dust entering the lamp body, but the diffusing plate has a low transmittance of only 85-88%. Whether you choose this depends on the meaning of your own design. 3. LED selection, try to use high-efficiency lamps, because the side-emitting panel lamps have limitations in heat dissipation and luminous flux output, power dissipation will have an impact, and the light efficiency is low. 4. When entering the glossy surface, do not stick glue when sticking reflective paper. The glue will absorb light, and it is easy to appear on the light surface to produce bright edges. However, a large area of ​​the light guide plate needs to be glued a little, otherwise there will be a shadow strip because the reflective paper does not. This is the case when it is tight and loose and warped in the lamp body. Pneumatic Telescopic Mast with power of air
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