Sunfree Lighting Limited is a high-tech company specialized in R&D and production of solar LED lights and LED lighting.

What are the reasons for poor heat dissipation of LED solar street lights?

by:SUNFREE     2021-04-04


In today's increasingly scarce energy, energy saving is the responsibility of each of us. In response to the call for energy saving and emission reduction, many street lamp manufacturers replaced traditional high-pressure sodium lamps with more energy-saving LED street lamps in urban street lamp retrofit projects.

However, the quality of LED street lights on the market is uneven, and LED street lights in many places will not light up. After all, the reason for this phenomenon is the poor heat dissipation performance of LED street lights. When the heat dissipation performance is poor, the internal temperature of the LED lamp will be too high. When the temperature of the LED increases, its junction resistance decreases, resulting in a decrease in the turn-on voltage.

Under the same voltage conditions, the increase in the internal temperature of the LED lamp will cause the LED current to increase. The increase in current will further increase the temperature, which will cause a vicious circle to burn the LED chip. Moreover, the internal temperature of the LED street lamp is too high, which will also increase the light decay of the LED chip, which will cause the phenomenon of bright but not bright soon. So what causes the poor heat dissipation performance of LED street lights?

1. The quality of the LED street lamp itself has poor thermal conductivity, and the temperature of the LED die cannot be transferred to the surface (internal heat and external cooling). Even if a radiator is added, the internal heat cannot be dissipated. Secondly, there is no radiator inside some LED street lights.

2. Temperature rise caused by LED street lamp power supply The quality of the LED street lamp power supply is not good. When the LED is turned on, the nonlinearity of the power supply and the weak change of the power supply will cause the current through the LED chip to increase, thereby causing the internal temperature to be too high. High, affecting the heat dissipation performance of LED street lights. All in all, the main reason for the poor heat dissipation performance of LED street lamps is the quality of the LED chip and the driving power supply.

Therefore, for our buyers, when buying LED street lights, they must emphasize that they should choose high-quality LED chips and power supplies for solar street light factories, rather than cheap. After all, high-quality products are not very cheap. If they are cheap, there is a problem.

Custom message
Chat Online 编辑模式下无法使用
Chat Online inputting...
Thank you for your enquiry. We will get back to you ASAP