On the morning of November 12, at the branch of "LED Products and Lighting Engineering Design", Xu Min, director of Shanxi Guangyu Semiconductor Lighting Co., Ltd., shared the COB technology applied to lighting exploration. Xu always believes that the future COB technology will be widely used in semiconductor lighting industry. "COB (ChiponBoard), is about to encapsulate multiple LED chips on the same substrate, in series on the chip series and parallel, in order to achieve the purpose of packaging design." Xu first introduced to everyone. At present, COB has been applied in Europe and the United States, Japan, Korea, Taiwan and some Chinese mainland manufacturers. COB light source compared with the traditional light, what are the advantages? Xu always told us that COB's low system thermal resistance, high connection reliability, with better lighting effects, can clearly reflect the outline of the object. At the same time, its module production efficiency, low cost; not only improve the reliability of module technology manufacturing, and flexible application, very much by manufacturers and consumers love. Although the COB light source has an incomparable advantage, but does not mean that consumers have fully accepted it, voices of doubt on the COB still issued from time to time. For example: COB light source has a problem of life, serious light fades? On this issue, Xu always tell us that there is already a formal test report, we can see from the test results, we can completely eliminate the concerns of the heat. LED life and PN junction temperature is closely related to Tj, and integration with ordinary packaging has nothing to do, control the junction temperature, the same light source life can be guaranteed. Through reasonable design of heat sink, reliable heat transfer, lower temperature of Tj, temperature control in a certain range, you can ensure that the light source has a long life and Tj can be effectively controlled. Xu also talked about the light source is as a separate system, the CBD light source has many advantages for street lights, and some of the CBD as a light source street lamp case to show to the audience. She also mentioned that different light sources can use the same street light system, the application is still very convenient. In addition, the COB lamps will heat radiators, housings combined into one, the cooling body in direct contact with the air, making the cooling efficiency greatly enhanced, and CBD maintenance costs are very low. Through these examples, we can see that the practical application of CBD light source in street lamps not only meets the requirements of urban road light sources but also does a good job. Xu always think that if the COB light source has made great progress, will provide a wider range of options for application vendors. The COB optical street lighting system development will also be more mature, road applications can be very good results.
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