Analysis of the structure of LED panel light

- Dec 07, 2018 -

With the development of the LED lighting industry, the LED panel light derived from the LED backlight has uniform light, no glare, and exquisite structure. It has been loved by many people. I have studied and developed the flat panel lamp for 2 years. Flat lamp structure design and precautions, I hope to help everyone


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 done a little higher, and the sealing 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 blocking 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 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 partial dark areas are obvious. The light effect of the light guide plate is very large in the design of the dot, 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. It does not need to be used for safety. It can be shipped to various countries by directly using a safety power supply.

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