Patent ID: 8870394

Claim:
An anti-fog heat generating glass system, comprising: a heat generating glass unit separating an indoor area from an outdoor area and including a general glass sheet and a heat generating glass sheet separate from the general glass sheet, said heat generating glass sheet having a transparent conductive coating layer formed on one side thereof; a glass surface temperature detector disposed on an indoor side of the heat generating glass sheet to sense a surface temperature of the heat generating glass sheet; a controller comparing the surface temperature of the heat generating glass sheet with a calculated dew point of the indoor area and controlling heat generation of the heat generating glass unit, wherein said controller includes a power input unit suppling power to the controller, an ambient environment detector sensing temperature and relative humidity of the indoor area, and wherein said controller controls the heat generating glass sheet to be heated when the surface temperature of the heat generating glass sheet sensed by the glass surface temperature detector is less than or equal to a dew point calculated based on a sensed temperature and the relative humidity of the indoor area; a heat generating glass actuator calculating a dew point of the indoor area, comparing the dew point with the surface temperature of the heat generating glass sheet, and controlling operation of the heat generating glass sheet; and a power source supplying electric power to the heat generating glass system to operate the system.