Patent ID: 8662157

Claim:
A vehicular air conditioning apparatus including a casing mounted in a vehicle and having a plurality of passages through which air flows, cooling means disposed inside the casing for cooling the air and supplying cooled air, heating means disposed on a downstream side from the cooling means for heating the air and supplying heated air, an air mixing damper for mixing at a predetermined mixing ratio the cooled air and the heated air, and a blower for supplying the air to the inside of the casing, wherein the casing comprises: a defroster opening connected to a defroster passage for blowing the air in the vicinity of a front window of the vehicle; a warm air passage formed on a downstream side from the heating means and through which the heated air flows; and a cool air passage formed on a downstream side from the cooling means and through which the air flows directly to the defroster opening without passing through the heating means, wherein, in the warm air passage, a downstream side thereof communicates with the cool air passage, and a communication opening, which communicates with the defroster opening, is formed on an upstream side of the warm air passage, and further wherein a communication switching damper is provided therein for switching a communication state between the warm air passage and the defroster opening through the communication opening, and the defroster opening is disposed immediately above the communication switching damper and the communication switching damper is disposed immediately above the heating means such that air from the heating means is supplied linearly straight up to the defroster opening through the communication switching damper.