| 摘要 |
PURPOSE:To forcibly clean and purify air in a car room, by discharging the air in the car room with a blower for a fixed time in accordance with door opening operation at boarding time to replace the air with fresh air. CONSTITUTION:In case of trying to ride in a vehicle under a stop condition, if a vehicle door is opened, a condition is caused wherein an ignition switch 3 is turned off a door switch 4 is turned on at the same time. In such a condition, inputs 2a, 2b of a control circuit 2 are adjusted respectively to ''0'', ''0'', and a transistor 15 in the circuit 2 is turned on to a conduction state to enable the inflow of a current through an output 2c, and a motor 18 is operated for selecting internal and external air to an introducing condition of the outside air, further relays 6, 7 are connected reversely, and a blower motor 16 is reversely rotated to automatically discharge air in a car room for a fixed time. In this way, the air in the car room is forcibly purified. |
