| 摘要 |
PURPOSE:To heighten a cloudiness removing effect if a detected value is high when change in humidity is gentle while remove cloudiness rapidly at the time of a sudden change in humidity by controlling a cloudiness removing means in accordance with the changing rate of the detected value of a dew condensation sensor. CONSTITUTION:The detected value of a dew condensation sensor 25 is inputted in a control unit 10. The control unit 10 judges whether the detected value is greater than a defined value. When the detected value is greater, the control unit 10 operates damper-driven cloudiness removing device electric-mechanical actuators 33 to 35, and a defogger 9 to carry out cloudiness stopping control. When the said detected value is smaller than the defined value, the control unit 10 judges whether the changing rate of the said detected value is greater than a defined value. When the changing rate is greater than the defined value, the control unit 10 carries out the same cloudiness stopping control as the one as mentioned above. |
