How to improve the cooling technology of LED street lamps

When it comes to heat dissipation of LED street lamps, many people will say that poor heat dissipation will always occur in summer, which will affect the normal operation and service life of LED street lamps.




Then let's imagine, generally in the current LED street lamp manufacturers, when designing, the LED terminals and the heat sink are combined together to transfer heat to the heat sink. There are two problems here, one is heat transfer. The problem of performance, if the heat transfer performance is not good, no matter how good the heat sink is, it is useless. The quality of heat transfer performance is determined by the contact surface between the LED terminal and the heat sink. If the contact is absolutely flat, silicone grease is completely useless. Only because it is not absolutely flat, silicone grease is used. In uneven places, the heat is transferred to the heat sink by the silicone grease, which is definitely not the silicone mentioned on the Internet. (Silicone is used to seal the non-conductive effect, such as the high voltage behind the TV.) There is no direct heat transfer effect of objects. Therefore, silicone grease, as long as it can transfer heat without contact at least, can not effectively transfer heat if it is too much.

The second problem is that the LED terminal transfers heat to the heat sink. In theory, the temperature of the heat sink is the temperature of the LED terminal. If the heat dissipation temperature goes down, the temperature of the LED terminal can also go down. The heat sink is determined by the heat dissipation material. There is also air flow to help heat dissipation, which is a requirement for the design of the heat sink. The larger the heat sink, the better the effect, and vice versa. How to effectively make the heat sink larger, many people here will say, get a large heat sink. For the sake of cost and aesthetics, the model has become a bottleneck (the imported cooling technology mentioned here is a kind of teaching for people who do not understand, mainstream cooling, air cooling, water cooling), so we will mainly Find a way to increase the volume of the heat sink.