Views:1254 Author:Site Editor Publish Time: 2018-08-06 Origin:Site
Compared with traditional halogen lamps, LED headlights have the advantage of compaction. At present, LED lights are favored by more and more people who have changed their lights. Their characteristics are very obvious, but how to choose high-quality LED lights? Do you understand? Especially durable LED lights. All know that the value of LED headlights is the appearance, the core is the chip, the soul is optical. This rhythm of both internal and external repairs seems to have completely revealed the whole life of LED headlights. However, the life of the LED is heat dissipation, are you clear?
After the LED light source is energized, about 35% of the electrical energy is converted into light energy, and the rest is converted into heat energy. LED headlights are extremely sensitive to temperature changes. If the LEDs are continuously lit at high temperatures, it is easy to have low power, reduced life, and the lights are off. Therefore, the heat dissipation performance of LED headlights is its life. You must To understanding.
There are two main types of heat dissipation for LED headlights on the market: passive heat dissipation and active heat dissipation.
Let's first talk about passive cooling. Passive cooling is now the mainstream form of copper braided heat dissipation and aluminum body heat dissipation. The copper braid has a heat dissipation method. The heat dissipation method uses a copper braid to form a copper strip for heat dissipation. The heat is quickly conducted through the copper strip. As far as the heat dissipating material is concerned, the heat dissipation performance of copper is second only to gold and silver, which is better than the heat dissipation of the aluminum material. When the braid is completely stretched, the best effect can be achieved.
Advantages: Small size, foldable tail for easy installation. Disadvantages: Copper is easily oxidized at high temperatures, so nickel plating on the surface of the copper strip greatly reduces its ability to radiate heat. Aluminum body heat dissipation is called integrated heat dissipation. The heat generated at the lamp body is conducted by heat conduction to the aluminum seat exposed to the air at the tail, and then the heat is carried away by the air flow. In order to improve the heat dissipation efficiency, some nano-radiation coatings are applied to the lamp body, which greatly increases the heat dissipation performance. In addition to this, there are fin-type heat dissipation and soft aluminum heat dissipation, but they are also different structures in the same way.
Advantages: The lamp body itself can spontaneously dissipate heat, and the exterior can be coated with nano lacquer to help dissipate heat and speed up the heat dissipation.
Disadvantages: Usually the tail shape will be slightly larger. When many models are installed, due to insufficient space, the heat cannot be dissipated normally, which affects the heat dissipation effect.