One of the main reasons is that the LED chip is afraid of heat. Occasionally, it does not matter if it is heated to more than 100 degrees in a short period of time. I am afraid that the long-term high temperature will cause great damage to the LED chip.

Generally speaking, the thermal conductivity of ordinary epoxy resin is very small. Therefore, when the LED chip is lit and working, the LED chip emits heat, while the ordinary epoxy resin has a limited thermal conductivity. Therefore, when you move from the outside of the LED light source When the temperature of the LED bracket is measured to be 45 degrees, the core temperature of the chip in the white LED lamp may exceed 80 degrees. The temperature node of the LED is actually 80 degrees. Then, when the LED chip works at the temperature-saving temperature, it is very tormented, which accelerates the aging of the LED light source.

When the LED chip is working, the center temperature generates a high temperature of 100 degrees, and it can immediately remove 98% of the heat through the bracket pins, thereby reducing the heat damage to it. Therefore, when the temperature of the LED lamp bead holder is 60 degrees, its chip center temperature may be only 61 degrees.

It can be seen from the above data that what kind of packaging technology LED lamp beads choose directly determines the light decay of LED lamps.

Secondly, the working environment temperature of the LED point light source module.

According to the data of a single LED light source when it is aging, if only one LED light source is working, and the ambient temperature is 30 degrees, then the temperature of the bracket when a single LED light source is working will not exceed 45 degrees. . At this time, the life of this LED will be ideal.

If there are 100 LED point light source modules working at the same time, and the interval between them is only 11.4mm, then the temperature of the LED light source bracket around the lamp stack may not exceed 45 degrees, but the middle of the lamp stack Those LED light sources may reach a high temperature of 65 degrees. At this time, the LED light source is a test. Then, the LED light sources gathered in the middle will have a faster light decay in theory, while the LED light sources around the lamp stack will have a slower light decay.

But if the LED point light source modules are more than 25mm apart, the heat radiated from each other will not accumulate so much. At this time, the temperature of each LED lamp bead bracket should be less than 50 degrees, which is more conducive to the normality of the LED. Work.