How to prevent the water from entering the car lamp housing

As far as the overall structure of the headlamp is concerned(car lamp housing), whether it is an ordinary halogen headlamp, a xenon headlamp or a headlamp with LED lamp group, there is a ventilation rubber tube at the rear cover. At the moment when the headlamp is on and even when the headlamp is in use, it will produce a lot of heat. The function of the vent pipe is to discharge these heat out of the headlamp as much as possible, so as to maintain the normal working temperature of the headlamp and ensure the stable use of the headlamp.

This is the vent pipe(car lamp housing). The water in the air will enter the headlamp and attach to the lampshade through it. With the accumulation of water vapor, water droplets will flow down the lampshade. This situation is mostly caused by large temperature differences. This phenomenon is most likely to occur in winter and rainy seasons. In this case, drivers need not worry too much. After the lamp is turned on for a period of time, the fog will be discharged from the lamp with the hot gas through the vent pipe, which will not damage the headlamp and electrical circuit. In this case, the driver's friend should not act rashly. For example, never bake the headlights, which is easy to damage the headlights, because the appearance of the headlights is made of plastic, and the additional heat can easily bake the lampshade, and most of the damage is irreparable.