Why is high quality LED car headlights expensive?
Like those cars that look ugly, they usually use halogen headlights, also known as candle lamps, just like incandescent bulbs in previous homes, but they are filled with halogen elements to prolong their life. After a long time, the lampshade will be yellow. Because of its good penetration ability, there are still cars in use, which is the best reason for halogen lamp owners to comfort themselves, in fact, it is because it is cheap. Then there are some mid-range cars that look good. The lights are bright and the pricked eyes are hard to open. Like this one, xenon lamps are used. The principle is that the Shi Ying lamp tube is filled with high-pressure inert gas, and then 20,000 volts of high-voltage electricity is applied. The light emitted is whiter and brighter than halogen lamps, and it shines farther, and it has a longer life and saves electricity.
The xenon lamp sounds perfect, it is wrong, and more powerful, LED car headlights, mainly used in medium and high-end cars, actually the light emitting diode, it is more bright, longer than the xenon lamp It is still good, and the size is small, the value is high, and can be made into a variety of different styles. Of course, the price is also the most expensive.
Where is the LED headlights? Everyone doesn't know, maybe black heart manufacturers in order to make money. Xiaobian reviews multi-party information, telling you that it is reasonable. If the LED headlights, want to make so bright light, the power will be particularly large, there is still a difference in the red-green indicator on the old radio, and the big power LED first is high. Then the most important thing is its heat dissipation problem, and the LED is also converted into light energy, but the conversion rate is less than 30%, of which 70% will become heat, if not scattered in time, the lamp will be broken in minutes Drop, if the heat dissipation is not thorough, it will cause the junction temperature, which will accelerate the light failure of the LED, and the life is not long.
LED heat dissipation involves substrate, packaging glue, and radiator. At present, the best heat dissipation substrate is ceramic substrate. Like our Slinton, it specializes in this. Because of its own material, the cost of ceramic substrate will be higher than other substrates, but the heat dissipation effect is dozens of times that of ordinary metal substrate. If the glue is encapsulated, a special thermal grease should be used, as well as a radiator. Ceramic substrates are equipped with ceramic radiators, so the whole cost is naturally high. Don't ask me why I don't use anything else. Make sure the headlights will break in a few days.
Nowadays, many car owners buy LED lamps by themselves, but they must recognize that they must use ceramic substrates, and there are also some bad manufacturers who use substrate glue made of other materials to make lamps. Now, the price competition in LED industry is fierce, so if you find cheap LED car headlights, you must be careful. At present, many high-end cars are already using matrix LED headlights, which can intelligently control the lighting. Another example is Audi, a lamp factory, which has started to try LED laser headlights. However, no matter what LED lamp, heat dissipation is always an unavoidable hurdle. As a practitioner of Slintong ceramic circuit board, I would like to tell you sincerely: to buy LED lamp, we must choose ceramic substrate.
Having said that, everyone can see that you are expensive, and the cost is much higher than that of halogen lamps and xenon lamps. Therefore, if you want to choose the owner of LED headlights, don't worry about it being expensive. One price, one goods.
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