[Solar lamp factory lecture hall] Analyze the structure of LED panel light and its design considerations

The LED street lamp industry has been developing for a long time, and some technical aspects have also been improved. As an LED flat panel lamp derived from LED backlight, its uniform light, no glare, and exquisite structure have been loved by many people. Through the design and development of flat panel lights in recent years, solar lamp factory lighting is also in the leading position in the industry Status. Today, I will talk about the structure design and precautions of LED street lamp flat panel lamps in combination with a piece of information provided by solar lamp factory lighting. I hope it can help you. First of all, we must know the structure and material of the surface light source: 1. The appearance structure of the aluminum frame and the main structure of LED heat dissipation-generally use AL6063, aluminum extrusion mold, low initial cost, beautiful surface treatment, good heat dissipation effect, check it a few days ago The exhibition also found that some manufacturers started to make die-cast frames, so that the IP level can be higher, and the light sealing is better, and the overall appearance is better, but the investment in the mold in the early stage is more expensive. 2. The light guide plate refracts the side LED light through the dots to change the angle of light. —The light guide plate is the heart of the flat light. The dot design is very important. If the dot design is not good, the overall light effect will be very poor. Generally, there will be 1. Bright in the middle, dark on both sides 2. Bright side on the light-in side, in the middle Dark 3. From different angles, the overall brightness is inconsistent 4. Local dark areas are obvious. A large part of the light effect of the light guide is in the design of the outlets, followed by the selection of the plate, but it is also wrong to blindly pursue the brand of the plate, because many brand manufacturers like Mitsubishi of Japan, most of their good plates are People order it. Many of the Mitsubishi plates that flow out of the market are mostly scraps, and their low light transmittance is not as high as their own plates. Therefore, the selection of the plate does not necessarily depend on the plate manufacturer, as long as the test has high light transmittance and light efficiency, it is OK. In fact, it is fine. 3. LED light sources generally use 3528 and some people use 5630 and 5050. 5630 and 5050 have low luminous efficiency and difficult dot design, poor versatility, but low cost. 3528 has high luminous efficiency and strong versatility. Generally, you can directly buy other light guide plates for use at the beginning, without re-proofing the design. Fourth, drive power lamp drive-there are currently two power sources 1. Directly use cross-current power supply (this The mode has high efficiency, PF value is as high as 0.95, high cost performance) 2. Constant voltage with cross-current mode (stable performance, but low efficiency, high cost) generally use this mode is designed for customers who require certification, because the lamps are 24V input Low-voltage lamps do not require safety regulations, and can be shipped to various countries directly by using safety-related power supplies. 5. The diffuser plate will evenly diffuse the light of the light guide plate, and also play a role in blocking the outlets-the diffuser plate is generally Using acrylic 2.0 sheet or PC material, the cost of acrylic is lower and the light transmittance is slightly higher than that of PC. Acrylic is brittle and has weak anti-aging properties. PC is slightly expensive but has strong anti-aging properties. After the diffuser is installed, the dots cannot be seen, and the light transmittance should be around 90%. The light transmittance of acrylic is 92%, and that of PC is 88%. You can choose the material of the diffuser according to your needs. Generally, you will use acrylic material. 6. Reflective paper will reflect the light from the back of the light guide plate-generally RW250. Cover plate sealed lamp body-generally made of AL aluminum, with strong overall texture, and can play a role in heat dissipation. Also pay attention to the issues that need to be paid attention to in the design and production process. 1. The selection of LED street lamp lamps and lanterns, try to choose high-efficiency lamps, Because the side-emitting panel lamp has limitations in heat dissipation and luminous flux output, the heat dissipation will be affected when the power is large, and the light efficiency is low.　　 Second, the thermal conductive adhesive should be as thin as possible. It is best to use adhesive thermal conductive adhesive, otherwise it will affect the thermal conductivity. 3. When sticking reflective paper on the glossy surface, try not to glue as much as possible. The glue will absorb light and it is easy to produce bright edges on the glossy surface. However, a large area of u200bu200bthe light guide plate needs to be glued, otherwise there will be dark shadow bars, because the reflective paper does not This situation will occur if it is tightly adhered, and is loose and warped in the lamp body. Fourth, the choice of diffuser. Now many flat-panel lamps on the market generally choose a diffuser with a glossy and matte surface. This diffuser has a shortcoming. It has a large static electricity and is easy to absorb dust during the production process to produce bright spots. In long-term use, dust will enter the lamp body through various channels, which will cause the luminaire to be dense. In the early days, some people used double-sided diffuser diffusers. This diffuser has good light guide effect and low static electricity, which can prevent dust from entering the lamp body However, the light transmittance of this diffuser is only 85-88%. Whether to choose it depends on the meaning of your own design. This information is provided by the solar lamp factory lighting. Thanks to the solar lamp factory lighting for providing industry information. I also hope that the content of the article will help everyone. Solar light factory lighting, 15 years of focus on outdoor lighting, LED street light brand leader. Original source: http://.