LED product life expectancy can be predicted? Let Xiaobian tell you, despite the LED lighting with energy saving, environmental protection, long life, easy to control, maintenance-free features, but ironically, we often hear that because of LED driver power directly affect the life of LED lighting becomes Not "long life", greatly increasing the maintenance / use costs; or drive the power efficiency is not high led to LED lighting energy conversion efficiency is not as high as expected, or because the output current ripple is not well controlled Affecting the luminous quality, making LED lighting green energy saving greatly reduced, and even affected the market popularity.
Everything has happened, the development and demise of the process, although compared to the general light-emitting devices, LED life is relatively long, but there is a certain life expectancy. Early LED flashlight, lamp, such gifts, the use of time is not long, the problem of life is not prominent. But now LED has been widely used in outdoor and indoor lighting, especially high-power LED street light, its power, high fever, long working hours, life problems are very prominent. Theoretically 100,000 hours of life, but in fact it is unknown, then in the end the problem is where?
If you do not consider the power and drive failure, LED's performance for its light fades, that is, a long time, the brightness becomes darker and dark, until the last off. It is usually defined as the life of 30% of the time decay.
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