Generally speaking, when we go to buy a car, the salesman will introduce us the selling point of the car, or the configuration of the car, and sometimes he will take out the headlight and tell us carefully, mainly to reflect the intelligence and personalization of the car, and then Makes you out of control and want to buy it. Generally speaking, we know that there are three headlights, the first is LED, the second is xenon, and the third is halogen, the old driver will tell you LED, what are the characteristics of xenon and halogen, look at your What car lights?

Let's start by saying that LED headlights have become standard equipment in high-end cars. It is similar to the energy-saving lamps we use in our home. It is also a device that uses a power-generating diode to emit a light source, and directly converts electrical energy into light energy without unnecessary waste. At the same power, its brightness is three times that of halogen, and it will not cause overheating. It can be said that it brings a good experience to the driver because it is bright and saves power.

The advantages of this kind of lamp are energy saving and environmental protection, relatively low cost, long service life, relatively high brightness, and most importantly, high safety. It's relatively small and can be arranged in any shape you want. You can even set the brightness of each bulb individually, in the case of Audi, LED matrix headlights are popular with many people, and these headlights will protect pedestrians and vehicles. However, the disadvantage of this kind of lamp is that the price is high and the heat dissipation problem is difficult to control.

The second type of lamp is the xenon lamp. Xenon headlights are probably the most modified lights by people. The principle is to fill the glass tube with an inert gas, namely xenon gas, through a pressure-resistant outer wire, and then increase the on-board 12-volt power supply to 23,000 volts with the help of a supercharger. Under the influence of this high pressure, the xenon gas produces a light source.

Let’s talk about its advantages first, the first is the brightness, which is much brighter than halogen headlights, and the price is not too expensive, so it is easier to modify. Its disadvantage is that it takes a while after driving to achieve the desired lighting effect. In rainy, snowy and foggy weather, the penetration effect is average. Moreover, if this xenon headlight is not equipped with a lens, it is easy to cause the light to diverge, and the driving safety cannot be guaranteed.

Finally, let's talk about halogen headlights. Halogen headlights are a very common automotive light source. Edison invented it, and after thousands of experiments, he finally succeeded in inventing it. It adds halogen gas to the bulb, which is our common halogen headlight.

Its advantages are that the structure is relatively simple, the production cost is relatively low, the technology is quite mature, the brightness is relatively easy to control, the penetration ability is relatively strong, and the penetration effect in bad weather is relatively good. The disadvantage is that the irradiation distance is very limited. During the driving process, the heat is relatively large, the efficiency is low, and the service life is relatively short.

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