High-power LED products have entered the World Expo and become a beautiful landscape of the Expo Park at night. However, there are still many problems in high-power LED products that need to be solved. Recently, at the 6th China Public Lighting Summit held at the Shanghai Everbright Convention and Exhibition Center, the technical issues of high-power LED products were discussed. Experts said that high-power LED products will surely embark on the "module light source" road.
It was learned from the meeting that in the high-power LED products, there are two main processes in the market - the dot matrix light source and the module light source. Among them, the dot matrix light source process accounts for 90% of the entire market, while the module light source process only accounts for about 10% of the market. But it is not that the module light source is not as good as the dot matrix light source, but it is hidden. The reason is that a major technical bottleneck in the manufacturing process of the module light source is that the problem of heat dissipation of the module cannot be solved. This problem has become a roadblock for many enterprises to study the module light source.
However, there are several obvious defects in the lattice source: the image appears ghosting, the colored spot appears, the vision is prone to fatigue and so on. It is understood that the reason why these phenomena occur in the dot matrix light source is that each light source on the dot matrix light source must pass through the lens to realize the second light distribution. When light passes through the lens, it breaks down the light into red, orange, yellow, green, blue, enamel, and purple bands. Although the band is narrow, it will appear from the height of ten meters to the ground. Weak ribbon phenomenon. In addition, each light source on the dot matrix light source is an independent light beam that is irradiated onto the illuminated object, thus forming a ghost phenomenon that is hard to find by the naked eye. Although the naked eye is not easy to detect, the human visual nervous system can feel it. When you look at it, you will get tired. In addition, the lattice source also has a complicated production process, resulting in an increase in manufacturing costs.
And the module light source? It only needs to solve the heat dissipation problem of the module chip to maximize the LED light effect. The reason is mainly because it can integrate the light generated by the LED through the reflector to the illuminated object to improve the LED light efficiency and efficient illumination. At the same time, it is clearly imaged without ghosting, color spots and visual fatigue.
Therefore, high-power LED street lamps and high-power LED products will eventually transition to the module light source. Once the enterprise cracks the heat dissipation problem of the module chip, the module-type LED products will surely shine toward the market.
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