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

In today's increasingly scarce energy, saving energy is the responsibility of each of us. In response to the call for energy saving and emission reduction, many Solar lamp manufacturers have replaced traditional high-pressure sodium lamps with more energy-saving street lamps in urban street lamp renovation projects. However, the quality of street lights on the market is uneven, and street lights in many places will not turn on brightly. 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 street lamp will be too high. When the temperature of the street lamp increases, its junction resistance decreases, resulting in a decrease in the conduction voltage. Under the same voltage condition, the increase of its internal temperature will promote the increase of street lamp current. The increase of the current will further increase the temperature, which will cause the evil cycle and burn the street lamp chip. In addition, the internal temperature of the street lamp lamps is too high, which will increase the light decay of the chip, which will lead to the phenomenon of bright but not bright in the near future. So what is the reason for the poor heat dissipation performance of street lights?

1. The quality of solar street lights

The street lamp chip used has poor thermal conductivity, and the temperature of the 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, some street lamps do not include a radiator.

2. Temperature rise caused by solar street lamp power supply

The quality of the street lamp power supply is not good. When the street lamp is turned on, the nonlinearity of the power supply and the weak change of the power supply will cause the current through the street lamp chip to increase, resulting in excessive internal temperature, and ultimately affecting the heat dissipation performance of the street lamp.

As mentioned above, the main reason for the poor heat dissipation performance of Solar powered street lamp is the quality of the chip and the driving power supply. Therefore, for our buyers, when purchasing street lamps, we must emphasize to the street lamp manufacturers to choose high-quality street lamp chips and power supplies, and not to be cheap. After all, high-quality products are definitely not very cheap. If they are very cheap, then there will be Problem.

Author: Yufai
This article was adapted from its original source: