Why are the mainstream LED lights now?

Many car owners are dissatisfied with their car headlights, or the headlights are used for a long time and need to be replaced. At this time, it is often necessary to modify the car headlights. Of course, more importantly, due to the consideration of safe driving at night, more and more car owners have joined the ranks of car headlights. Car-modified led headlights have become very common, of course, including the modification of halogen headlights and xenon headlights. Today we will talk about specific modification methods and precautions.

Car headlight classification

Car headlights mainly include halogen, xenon and LED. Among them, halogen headlights are mainly used in low-end and mid-range cars. Xenon headlights are common in some medium and high-end vehicles, and LED headlights are only used in very few new vehicles.

Led headlights

LED is the abbreviation of Light EmitTIng Diode, commonly known as LED. They are often used in the role of light boxes, signs and various electrical indicators and backlights. They are also car headlights, taillights, high-position brake lights, and daytime driving. An important component of the lamp. Compared with xenon lamps and halogen lamps, LEDs have higher luminous efficiency and consume only 1/20th of the cost of halogen lamps. In addition, the cost of LED components has been greatly reduced year by year, and the current cost and price are still more than 20% per year. decline.

Halogen headlight

A halogen lamp is actually a special kind of incandescent lamp. The principle is that when a current flows through the resistor, it will generate heat. When the temperature is high enough, the black body radiation with a wavelength in the visible light band will be emitted. There are two kinds of halogen lamps: iodine tungsten lamps and bromine tungsten lamps. When the incandescent lamp is lit, although the filament temperature does not exceed the melting point and boiling point of tungsten, a small amount of tungsten will volatilize at a high temperature. When the volatilized tungsten atoms encounter a cold bulb envelope, they will condense and precipitate. Over time, the bulb shell will accumulate a blackened tungsten film. Ordinary incandescent lamps have been used for a long time.

Xenon headlights

The full name of Xenon headlights is HID (High Intensity Discharge Lamp) gas discharge lamp, which uses the matching electronic ballast to instantly raise the 12V voltage of the car battery to a trigger voltage of 23KV or more, and ionize the helium gas in the xenon headlight to form an arc discharge. It makes it stable and provides a stable car headlight illumination system.

Xenon bulbs have two distinct advantages over ordinary halogen bulbs:

On the one hand, Xenon bulbs have three times the light intensity than ordinary halogen bulbs, but consume only two-thirds of the energy;

On the other hand, Xenon bulbs use nearly the same color as daylight, creating better visual conditions for the driver. Xenon lamps provide a wider range of illumination and greater illumination, greatly improving the safety and comfort of driving.

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