As an important lighting device for vehicles, the performance of car headlights directly affects the driving safety and comfort of the driver. The following will introduce the main components and structures of car headlights in detail:
- Lampshade
The lampshade is the outer shell of the headlight, generally made of transparent or translucent glass or plastic. Its main function is to protect the internal bulb and other structures, while allowing the light to be effectively transmitted and diffused. The design of the lampshade also takes into account factors such as wind resistance, waterproofing and dustproofing to ensure that the headlights can work normally in various harsh environments. - Bulb
The bulb is the part that produces the light source, usually made of glass or quartz, and filled with inert gas or vacuum. Depending on the type of light source, the bulb can be a halogen bulb, a xenon bulb or an LED chip. The quality and performance of the bulb directly affect the brightness and life of the headlight. - Lamp holder
The lamp holder is the fixing and connecting part of the bulb, responsible for connecting the bulb to the circuit of the headlight. The design of the lamp holder must ensure the stability of the bulb and easy replacement. At the same time, the lamp holder must also be able to withstand the high temperature and current when the bulb is working. - Reflector bowl
The reflector bowl is a reflective surface behind the bulb, usually made of metal, and shaped like a parabola. Its main function is to reflect the light emitted by the bulb so that it can be more concentrated and evenly irradiated onto the road surface, improving the lighting effect. - Lens
The lens is located inside the lampshade and is used to further adjust and control the propagation direction of the light. The lens can be flat or have a specific curvature to meet different lighting needs. For example, the lenses of some advanced headlights also have anti-glare functions to reduce interference with other road users. - Back cover
The back cover is the back part of the headlight, which is mainly used to enclose the internal structure of the headlight to prevent dust and moisture from entering. The back cover is also usually equipped with heat dissipation holes to ensure that the headlight can effectively dissipate heat when working and extend its service life. - Dimming device
The dimming device is a key part to control the brightness and irradiation range of the headlight. It can manually or automatically adjust the current or voltage of the bulb to achieve precise control of the brightness and irradiation angle of the headlight. Some advanced headlights are also equipped with automatic dimming systems, which can automatically adjust the brightness and illumination range of the headlights according to changes in the external environment to improve driving safety.
