What is the difference between fog lights and low beam lights?

Posted by ff on December 9th, 2020

Why can't we use fog lights as daily lights? The difference between fog lights and low beam lights is the angle of illumination, brightness, light source penetration, etc. In these aspects, fog lights are stronger than low beam lights.

The fog lamp for car does not have a hood, and the power of the bulb is high, and the light source has strong penetrability, so it will be particularly dazzling. In order to allow the light to penetrate rain and fog in rain and fog, the fog light source has strong penetrability, and the front fog lamp has no hood structure. The power of the rear fog lamp bulb is relatively large, and the penetrating power is also strong. Don't turn on the rear fog lights when visibility is high. They are too dazzling and will affect the drivers of vehicles behind them.

The function of the dipped beam is to illuminate a certain distance in front of the vehicle. Its illumination angle is lower than the horizontal line, and the power of the bulb is not large, so it will not cause interference to the drivers of other vehicles. The power of the low beam is not as high as that of the fog lamp, and the illumination angle is not high, so it can clearly illuminate the road in front of the car without causing interference to other drivers.

However, in a foggy day, the low-penetration low-beam lamp is very difficult. At this time, the fog lamp must be used to make up for the defect that the low-beam lamp cannot penetrate heavy rain and dense fog. Therefore, the fog lamp can only be used as an emergency lighting tool under bad weather conditions, and cannot be used as a daily lighting lamp.