Why is it expensive for LED car headlights?
Some of the lights are particularly good-looking, and some of the lights are particularly ugly. I heard that there are still lights to buy, this is all for the sake of it? Today, Xiaobian will tell you about it.
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Like those cars that look ugly, they usually use halogen headlights, also known as "candle lights", just like the incandescent light bulbs in the past, but they are filled with halogen elements to extend life. After a long time, the lampshade will be yellow. Because of the good penetrating power, there are still cars in use, which is the best reason for the owner of the halogen lamp to comfort himself, in fact, because it is cheap.
Then there are some mid-range cars that look good. The lights are turned on and the thorns are not open. Like this, they use xenon lamps. The principle is to fill the quartz tubes with high-pressure inert gas. The high-voltage electricity of 20,000 volts emits light that is whiter and brighter than halogen lamps, and takes longer, and lasts longer and saves electricity.
Xenon lights sound perfect, right, and even more powerful, LED car headlights, mainly used in high-end cars, sounds very high, in fact, is a light-emitting diode, it is brighter than a xenon lamp, longer life It is still good for the whole vehicle to be scrapped, and it is small in size and high in value, and can be made into various shapes by designers. Of course, the price is also the most expensive.
Where is the LED headlights expensive? The cost is not known to everyone, maybe it is the black heart manufacturers in order to make money. Xiaobian consults the multi-party information to tell everyone, it is expensive for a reason.
LED headlights, if you want to emit such bright light, the power will be particularly large, and there is still a difference between the red and green lights on the old radio. The high-power LED first has a higher cost. Then the most important point is its heat dissipation problem. LED also converts electrical energy into light energy, but the conversion rate is less than 30%, 70% of which will become heat. If it is not released in time, the lamp will be burnt out in minutes. If the heat is not completely exhausted, it will cause the junction temperature, which will accelerate the light decay of the LED, and the life will not be long.
LED heat dissipation involves the substrate, package glue, and heat sink. The best heat sink substrate is the ceramic substrate. The ceramic substrate is higher in cost than other substrates because of its own material, but the heat dissipation effect is a few common metal substrates. ten times. If you need to seal the glue, you need to use special thermal adhesive. There is also a heat sink. The ceramic substrate is equipped with a ceramic heat sink. The whole cost is naturally high. Don't ask me why I don't need anything else, and make sure that the headlights will be broken in a few days.
Now many car owners are buying LED lights themselves, but it must be recognized that ceramic substrates must be used. Now there are also some manufacturers who use other materials to make lamps. Now the price of LED industry is fierce, if it is found to be cheap. LED car headlights, then be careful.
Nowadays, many high-end cars are already using matrix LED headlights, which can intelligently control the lighting. There is also such a "light factory" Audi, has begun to try LED laser headlights. But no matter what LED is the LED, the heat dissipation is always a hurdle that can't be circumvented. Xiaobian wants to tell everyone sincerely: When buying LED lights, you must choose the ceramic substrate.
Having said that, everyone can see that it is expensive and expensive, and the cost is much higher than that of halogen lamps and xenon lamps. So if you want to choose the owner of the LED headlights, don't worry about it. You get what you pay for.
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