Classification and basic requirements of car lights[汽车修理知识]

VariousCar lightsBasic requirements
carThe basic component of the lamp assembly is the light group, which includes three parts: light source (bulb), reflector and translucent mirror.
Car lamps can be divided into two categories based on their different functions: lighting lamps and signal lamps.
Lighting fixtures include:Headlamp(Low beam and high beam), frontFog lights, Reversing lights, side lights, etc.;
Signal lamps include: position lights, hallway lights, turn signal lights, brake lights, rear fog lights, license plate lights, and retro reflectors.
Among them, front fog lights and reversing lights are both illuminating lights and signal lights.
1. Headlight
Headlamps, commonly known as headlamps, can be divided into gas lamps (gas discharge lamps) and electric lamps (filament lamps) depending on the light source they are installed in. Electric lamps are divided into incandescent lamps and halogen tungsten lamps. At present, the main light bulbs and headlamps used in our country include low beam and high beam. The low beam is a short-distance lighting lamp used when there are other road users in front of the vehicle, which does not make the other person dazzling or uncomfortable, that is, the lamp used when meeting cars; the high beam is when there are no other road users The long-distance lighting fixture used at the time.
From the perspective of headlamp models, there are roughly four types of headlamps (headlamps): H1, H3, H4, H7 and other models. The light models of Japanese cars are mostly H4; the light models of European cars are H1, H3, H7, D2S/R; the light models of American cars are HB3 (9003), HB4 (9004), HB5 (9005).
2. Front fog lights
Mainly used to improve the road lighting in fog, snow, rain or dust. In order to prevent the dazzling of oncoming vehicle drivers, the projection distance of the front fog light beam on the ground is relatively close to that of the low beam beam.
3. Other lamps
Position lights, which are generally called small lights, are mainly lights that indicate the presence and width of the vehicle; brake lights arebrake light, Viewed from the rear of the vehicle, indicating that the vehicle is braking. At present, the rear fog lamp required to be installed is mainly a lamp that is observed from the rear of the vehicle in heavy fog, which makes the vehicle more visible. Because of its strong penetrating power, it can to a large extent reduce the rear-end collision of cars under bad weather conditions and prevent the occurrence of traffic accidents.

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