| 摘要 |
PURPOSE:To enable a room heating to be operated when prevented the front windshield glass from being dimmed, by selecting the rear air conditioning unit to heater mode when operated the front air conditioning unit at least to defroster mode with the mode selector lever. CONSTITUTION:If the mode selector lever is set to defroster position, a defroster switch 82 is made closing with a signal current inputted to a third and sixth OR circuit 85, 88, and a switching circuit 96 is operated. This causes an electromagnetic coil 91 to be energized and the defroster side opening of front air conditioning unit of the automobile is opened. On the other hand, an electromagnetic coil 93 is energized by an operation of a fifth switching circuit 98, and the heater side opening of rear air conditioning unit of the automobile is opened. In consequence, a big amount of hot air flows out to the front glass to strongly perform its defrosting operation, simultaneously with a big amount of hot air blown out into the room to operated a room heating. |
