| 摘要 |
PURPOSE:To restrain a battery from being exhausted by configurating a device in such a way that either an air conditioner or a rear defogger is actuated depending on the vehicle load condition with the provision of a means which does not permit the above said two units to be operated simultaneously. CONSTITUTION:While an engine is in operation, when a rotary terminal 7d of a fan switch 7 is rotated allowing either terminals between 7a and 7b, or terminals between 7e and 7h to be connected each other, a fan motor 13 is actuated. Under this condition, when a rear defogger switch 23 is turned on, a terminal 3 is connected with a terminal 8 within a time control unit 3 with a somewhat time delay provided allowing the rear fogger 17 to keep operating through a relay 9 for the specified period of time. Besides, while the rear defogger 17 is in operation, when an air conditioning switch 21 is turned on, the said terminal 3 is immediately disconnected from the terminal 8. This causes the rear defogger 17 to be suspended, and simultaneously, a terminal 4 is connected with the terminal 7 allowing an air compressor 25 to be actuated through a relay 19. |
