Anyone who pays attention to the car will know that it is of course a car LED light that is on fire. Car LED lights have been in existence for a few years, why is it so hot this year, I believe that in many people’s minds will have their own understanding. The smaller series also said that LED lights have better trend and a lot of advantages compared with traditional halogen bulbs and xenon bulbs, and LED lamp bead chips have increased significantly this year. In particular, the profit in the aftermarket is getting lower and lower. Everyone has a hard time. They want to do some new products to fill the market. The country has been promoting LED energy conservation and environmental protection for some time. I believe many people, especially car owners, will want to put their own Is the headlight replaced with an LED headlight?
Generally, we have normal logic ideas. We must grasp the essence of what problems. Why do car LED headlamps do not have a benchmark product? Why do you do fan cooling? I do copper strip heat dissipation. Does he do pure aluminum heat dissipation? In all three cases, there is no right or wrong. The purpose of doing this is actually one: for heat dissipation! This is the essence, one of the biggest problems with LEDs, especially car lighting, the biggest problem is heat dissipation! If the heat is not reasonable, brightness and so on are all empty talk. These three structures are also structures that come out for heat dissipation! Then the next series will analyze the ins and outs of these three structures one by one:
We know that there are three basic theoretical methods for heat dissipation: 1: conduction 2: convection 3: radiation.
Regardless of the heat dissipation of the fan, the heat is replaced by copper strips. In the case of aluminum heat dissipation, the first conduction is required. First, the heat generated by the LED lamp beads is transmitted to the bottom, which is generally transmitted to the bottom of the lamp holder. The fan-changing allows the heat to convect and increase heat dissipation. In the case of copper strips and pure aluminum parts, only copper strips and pure aluminum parts can be used to radiate heat. Of course, these three structures can not say who has good heat dissipation, who has bad heat dissipation, and the car light has a biggest problem. In order to install easily, the volume can not be too large. If the volume is large, the heat dissipation is solved, but it is not It’s easy to install, and it’s also a slap in the face. Because of the volume limitation, copper strip heat dissipation and pure aluminum parts have certain limitations. After all, the LED lamp bead is very large according to the power meter. Some heat is not reasonable, it will attenuate the lamp and the brightness will be attenuated. The meaning of car lighting is lost.
The above analysis can only be used as your reference. Fan cooling can basically balance conduction, convection and radiation. Copper strips and aluminum parts can only conduct and radiate heat, and the LED lamp bead power of this structure reaches a certain level. If the heat is accumulated, the brightness will decay very quickly!
The heat dissipation structure is not good or bad, only the most scientific points! After all, the power and the volume of each lamp are different!