Automobile headlights, commonly known as "headlights.". The "soul" of headlight is its light bulb. Its performance will affect the effect of night lighting, directly related to driving safety. The service life of ordinary halogen headlamp is about 4 to 6 years. It depends on the night you drive and the time you use the headlights (day or night). HID light bulbs have no filament, so they have a longer life (10 years or more), while LED headlights have no filament or glass bulb, and will last tens of thousands of hours, which is usually the life of the vehicle.

The automobile has been born for more than 100 years, and it is also an era of rapid development of human scientific and technological capabilities. With the advent of the electrical age, the electrical components of the car have also undergone tremendous changes, the most representative of which is the development and evolution of the vehicle headlights. Do you know its functions?

It is also easy to cause traffic accidents at night, so the headlight should be inspected regularly and the brightness of the headlight should be adjusted.

Automobile lamps and lanterns are widely used in daily life. In 1985, LED automobile signal lamp first appeared on the bus. In 1986, the use of LED high mounted brake lamp on Nissan 300ZX automobile marked the official beginning of the era of LED automobile lamps.

In order to increase the purchase mode of low, medium and high configuration of the vehicle, when the customer purchases the vehicle, he can purchase the bulb and lens by himself.

According to the data report, 70% of automobile accidents happen at night, of which 50% are caused by headlight source, water in headlight, low beam fading, yellow shade, too low light source, not far high beam, etc.

Take Audi laser headlamp as an example. The light source of laser headlamp is laser diode. Blue laser converts it into white light through scales, and irradiates it on a 3mm lens.

There are the following provisions for automobile headlamp: the luminous capacity of low beam headlamp with rated voltage of 12V of motor vehicle shall be more than 1000-1200lm (LM is luminous flux unit: lumen), and the luminous capacity of high beam headlamp shall be more than 1450-1900lm.

The fog lamp is divided into front fog lamp and rear fog lamp. The front fog lamp is generally bright yellow, and the rear fog lamp is red. The light line of the front fog lamp sign is downward, and that of the rear fog lamp is parallel.

Motorcycle lamp is divided into direction lamp, headlight, tail lamp and brake lamp. The direction lamp is the most important equipment to inform other vehicles of their own trend, so we must confirm whether the direction lamp is normal or not before driving. The sound frequency of the relay can be used to judge whether the direction lamp is normal.

Xenon lamp and halogen lamp have advantages and disadvantages respectively. From the perspective of the effect of xenon lamp + lens on the ground, even the asphalt particles on the ground can be clearly observed; however, the combination of halogen + reflector may be weaker.

Features of xenon lamp: Xenon lamp can output brightness of up to 3500lumen, while general halogen bulb can only produce brightness of up to 1000lumen.

The service life of the xenon lamp on the automobile is determined according to the total time of the use process when the lamp is not on. Xenon lamp is also 10 times longer than halogen lamp in service life, and the accumulative service time can reach about 3000 hours.

Halogen lamps began to be used in lamps in the 1970s. In 1962, Haila took the lead in introducing halogen lamps. Its light-emitting principle is very similar to that of ordinary incandescent lamp. Tungsten wire of halogen lamp has higher melting point than that of ordinary incandescent lamp.