We developed the system preventing frost from accumulating on the windshield, and could solve the problem of power supply that was the serious defect of Windshield Heating Systems in the market using the voltage much higher than 12 V.
In our system the temperature and the humidity sensors measure the surface condition of the windshied and then by thier signals, the electric current automatically flows on and off into the windshied to keep it's temperature above the dew point.
This antifrost system can prevent frost from accumulating on the windshield except the extremely cold areas. Basically, the battery initially loaded on the car is exchanged for the large-sized one in order that the power supply of this antifrost system may be made commom use of the battery. But, in the extremely cold districts, the considerations of the exterior power supply system or the exclusively prepared battery for the antifrost system are needed.