What should I do if the front windshield of the car fogs when the weather is cold?

1, the simplest method-opening a window

? Fog is caused by the temperature difference between "external cooling and internal heating". In most cases, the temperature inside the car is high, especially when the car is full, and the fog is generated very quickly. Window ventilation, so that the space inside and outside the car convection, can alleviate the phenomenon of glass fogging.

2, air conditioning warm air (winter), cold air in summer, blowing the front windshield.

? Although the fog on the glass has been wiped off before driving, the temperature inside the car is much higher than that outside the car because the windows are closed during driving. Hot air in the car will naturally liquefy into fog when it meets cold glass, which will seriously affect the vision (don't wipe it with a towel when driving, safety is important). The solution at this time is to turn on the car air conditioner and choose the blowing mode to blow the windshield.

3. Press the defogging button on the front windshield.

4, the use of glass antifogging agent, rearview mirror can also be used:

? A super-hydrophilic nano-film will be formed on the glass surface treated by antifogging agent, which will make the fog contact with it to form a low freezing point mixture, thus preventing fogging. The specific operation is to scrub the car glass first, then spray anti-fog agent on it, dry it for 1-2 minutes, and then wipe it clean with a dry towel.