I believe that many friends will find that the headlights sometimes fog up when using the car. This phenomenon often occurs in scenes such as after rain or car washing. In fact, fogging of car headlights is normal, so don’t worry too much.

First of all, the fogging of the Car Head Light Cover is due to the change in the outside air temperature causing the temperature in the lamp group to drop. At this time, water molecules in the air easily enter the cavity of the lamp group through the rubber vent tube or vent, resulting in the inside and outside of the Car Head Light Cover. If the temperature difference is too large, the water molecules in the moist air will gather from the place where the temperature is high to the place where the temperature is low. The humidity in these parts will increase, and then it will condense on the surface of the inner lampshade to form mist.

In addition, after the vehicle is wading through water, because the engine and exhaust system themselves generate a lot of heat, a large amount of water vapor will be formed on the water, causing part of the water vapor to enter the headlights.

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