[Technical point of view] LED product life discount rate geometry?

Energy conservation, environmental protection, and longevity are the three major advantages of LED products . In terms of energy conservation and environmental protection, Xiaobian does not have much doubt. For now, LED products have relied on “low energy consumption” selling points that meet global environmental requirements. Conquer the market, but for long life, there are indeed many people who have doubts about this.

When chatting with an LED manufacturer a few days ago, he said: "The damage of LED products mainly appears on the power supply. In fact, there is no big problem on the chip, but the light decay is inevitable." The current LED is in the general description. They can all be used for more than 50,000 hours, and some manufacturers claim that their LEDs can operate for about 100,000 hours. However, the shelf life of LED products on the market is mostly within one year. If they are all in use within the specified time, then it will be more than 8,000 hours, even one-fifth of the standard service life will not be available. Perhaps the life of LED products is indeed longer than traditional lamps, but it seems that there is no clear answer.

The rated service life of an LED cannot be calculated using the measurement method of a conventional luminaire. When testing the life of the LED, no one will stay aside waiting for it to stop working. So the legendary 50,000 hours is just an experimental estimate of LED products. LEDs last because they don't cause filaments to blow. Although the LED does not stop working directly, it will gradually degrade over time. It is predicted that high-quality LEDs can maintain more than 60% of the initial brightness after 50,000 hours of continuous operation. Assuming the LED has reached its rated service life, it may actually be still emitting light, but the light is very weak. In order to extend the life of the LED, it is necessary to reduce or completely dissipate the heat generated by the LED chip . Thermal energy is the main reason why LEDs stop functioning. The life of LED is a theoretical absolute environment. Actual use can only be estimated by simulating deterioration conditions due to excessive external influences. However, there are many reasons for the uncontrollable environment after the actual application of the LED, such as the stability of the driving current, the impact of the instantaneous current, the environment and the heat-dissipating materials used, etc., which greatly reduce the life of the LED.

In terms of various aspects, what is the life discount rate of LED products? What kind of promise should the merchant give to the consumer? Double 11 has just passed, all kinds of commodities are vying for discount sales. When discounting prices and striving for sales, is the life of LED products also discounted?