| 摘要 |
PURPOSE:To improve a cloud preventing effect in a cloud preventing means operated when humidity close to the inner surface of a window glass exceeds a predetermined value, by operating the means with a set value lower than the predetermined value when vehicle acceleration exceeds a predetermined value. CONSTITUTION:When humidity detected by a humidity sensor 8 close to the inner surface of a window glass exceeds a predetermined set value in normal travelling, a blow-off port opening and closing door 36 is opened by a control unit 10 so that air is blown off from a DEF mode blow-off port 18. As a result, the humidity close to the inner surface of window glass 4 is dropped to prevent the inner surface from dewing. On the other hand, travelling wind abutting against the window glass 4 is increased in the acceleration of a vehicle, so that the humidity on the inner surface of window glass 4 is abruptly dropped. Then, a change in the humidity is detected by an atmospheric temperature sensor 12 and when the degree of the atmospheric temperature drop exceeds a predetermined value, air is blown off from said blow-off port 18 with a set value lower than the set value. |
