Differences and treatment methods of fogging and water inflow of car headlights in winter

The headlights emit heat when they are lit and when they are illuminated, so structurally speaking, the rear of the headlights has a vent hole that can be used to discharge the heat emitted by the headlights. Ensure the normal working temperature of the headlights.

This phenomenon is especially obvious in the autumn and winter seasons, or the summer and autumn weather with frequent rain. In fact, the moisture in the air enters the headlight through the ventilation holes and attaches to the lampshade. Because the outside temperature is low, but the temperature inside the headlights is high, it is prone to temperature differences and produce water vapor.

The external performance of fogging and water intake of headlights is different. If you want to judge whether the headlights are flooding or fogging, there is a way to make a preliminary judgment, that is, to check the traces of water flow. Fog is usually formed by a film or dew on the surface of the headlight cover without traces of water flow.

The water inflow is condensed into dew and flows from above the headlight to below the headlight. This will form obvious traces of water flow. Like a waterfall, even if the water is dry, there will be some traces, just like the road that the snail passes There will be traces.

Of course, if this is to be judged, many car owners are confused, and there may be a wrong judgment. There is another way. After the fog inside the lamp appears, the fog will take about 1 to 1.5 hours under the lighting state, which can be completely eliminated; in the static state, store it in a dry environment with a humidity of less than 50% for 24 to 36 hours, and the fog inside the lamp Can be completely eliminated automatically, the phenomenon is fogging. If a large area of ​​fog condenses on the inner wall of the lens and condenses into water droplets, it accumulates inside the lamp. When the lamp is used for a long time and many times, as the temperature increases, the fog will adhere to the inner surface of the light distribution lens. This phenomenon should be judged as influent.

Headlights fogging into the water has a great impact on the vehicle. In addition to affecting the safety of driving at night, there may also be problems with the vehicle line due to excessive water inflow, which must not be ignored. Especially in the summer and winter seasons where water is abundant, it is necessary to develop a good habit of regularly checking the headlights of vehicles.