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Among the many lighting devices of a car, the fog lights have become a powerful assistant for drivers in bad weather conditions with their unique functions and importance. The original intention of the design of fog lights is to provide drivers with a clearer view in extremely low visibility environments, such as foggy days, rainy days or at night, and also to send warning signals to other road users to ensure driving safety.
Car fog lights are mainly composed of bulbs (or LEDs), reflectors, light distribution mirrors, sunshades, vertical light adjustment devices and shells. Most bulbs use halogen bulbs, and their light is focused by the reflector to form a parallel beam of light. The light distribution mirror is responsible for diffusing and refracting the light beam to form a horizontal beam that meets regulatory requirements. The design of the sunshade in the fog lamp is particularly critical. It can effectively block the light from the upper part of the filament to form a light cutoff line, ensuring that the light beam is not dazzling and can provide good lighting effects.
The adjustment of the fog lamp's beam is usually limited to the up and down directions to suppress diffuse reflection caused by water and dust particles in the air and avoid the formation of a light film phenomenon that obscures vision. At the same time, the color of the fog lamp is usually white or light yellow, which has better penetration in rainy and foggy weather and can help drivers better judge the road conditions.
The use scenarios of fog lamps are mainly concentrated in bad weather conditions with low visibility. When encountering heavy fog, heavy rain or driving at night, turning on the fog lamp can open up a relatively clear visual channel for the driver and reduce traffic accidents caused by unclear vision. Fog lamps can also send clear warning signals to other vehicles, reminding them to pay attention to the vehicles ahead and keep a safe distance.
Fog lamps are not all-weather lighting equipment. In the case of good visibility, the abuse of fog lamps may cause dazzle to other drivers and affect driving safety. Therefore, drivers should strictly abide by traffic rules and turn on fog lamps at the right time.
As an important safety device for automobiles, the maintenance and troubleshooting of fog lamps should not be ignored. Drivers should regularly check whether the bulbs, reflectors, light distribution mirrors and other parts of the fog lights are intact to ensure that the fog lights can work properly. If the bulbs are found to be black, cracked or the filaments are broken, they should be replaced with new bulbs in time.
The circuit system of the fog lights should also be checked regularly. Drivers can determine whether there is a fault in the circuit by checking the resistance value of the fuse and the circuit harness connector. If the fog lights are not lit, troubleshoot and handle the fault according to the instructions in the vehicle manual.
