Vehicular air conditioner with defogging feature

Claim 1

An air conditioner for a vehicle having a window, the air conditioner comprising: (a) first means for conditioning air, said first means including an air duct having a defroster outlet, a vent outlet and a floor outlet, and an evaporator, a heater, and an air mixing door located within the air duct; (b) second means for moving air to be conditioned through the first means; (c) third means, connected to the first means for directing the conditioned air toward the window via the defroster outlet to prevent the window from fogging over; (d) fourth means, connected to the first means for directing the conditioned air toward an upper part of a vehicle passenger compartment via the vent outlet; (e) fifth means, connected to the first means for directing the conditioned air toward a lower part of the vehicle passenger compartment; (f) sixth means for setting a preset bi-level operation mode; (g) a cooling compressor connected to the evaporator of the first means; and (h) control means for selectively activating and deactivating the compressor and for controlling the third, fourth and fifth means, when a preset bi-level operation mode has been set by the sixth means, to block the defroster outlet, unblock the vent outlet and the floor outlet when the compressor is activated, and to unblock the defroster outlet, the vent outlet and the floor outlet when the compressor is deactivated.