| 摘要 |
PURPOSE:To simplify structure by connecting a rear-seat duct to a main duct through at least two passages and automatically controlling the blow-out air temperature on the basis of the difference between the set blow-out temperature for rear seat and the detected temperature, thus controlling the temperature separately from the temperature for a front seat. CONSTITUTION:Since, when the set blow-out temperature Tout/d by a rear-seat blow-out temperature setting device is lowered, or the detected temperature Tm' of a rear-seat mode sensor 36 or the blow-out temperature TF of a front-seat air conditioning unit 1 becomes high, the synthesized signal S increases, an air mixing door 24 shifts to a cool side to increase the amount of cold wind supplied from a connection passage 23a, and the amount of warm wind supplied from a passage 23b is reduced. While, when the set temperature Tout/d is set high or the temperature Tm' or TF is lowered, the door 24 shifts to the heating side, and the amount of cold wind supplied from the passage 23a reduces, and the amount of ventilation supplied from the passage 23b increases. Therefore, even if an extenal disturbance is generated in the air temperature which is blown-out into a rear-seat space, a desirable temperature can be always obtained, and the comfortableness in the rear-seat space can be secured.
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