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LED heating problems

Update:25 Dec 2018
Summary:

In the process of using LED lighting, especially LED fl […]

In the process of using LED lighting, especially LED fluorescent tubes, in traditional fluorescent fluorescent tubes, traditional fluorescent fluorescent tubes convert electrical energy into thermal energy and then convert thermal energy into light energy. However, LED fluorescent tubes directly convert electrical energy into electrical energy. Light energy, but the ultimate goal of both is to convert electrical energy into light energy.

However, none of the two methods can completely convert electric energy into light energy. At present, the most energy-saving LED fluorescent tube can only convert most of the electric energy (60%~70%) into LED illumination. However, the LED tube is converted into heat during the rest of the lighting process. In addition to the extended use time, the temperature of the LED internal chip will gradually increase, and the performance of the LED internal chip and other devices will decrease or even fail with the temperature rise.

Eventually the LED device will not work. Fundamentally, the rise in junction temperature reduces the probability of PN junction luminescence recombination. In the light source, the brightness of the light is reduced, and saturation occurs. Therefore, the problem of heat generation is an issue that needs to be solved in the LED development process, especially the LED daylight tube.