Patent ID: 7958740

Claim:
A vehicle air-conditioner provided with means for conditioning air, the conditioning means including means for introducing at least one of inside air and outside air, means for adjusting the state of the introduced air, and means for blowing the air out into a vehicle compartment, the vehicle air-conditioner further provided with: an inside air introduction port introducing the inside air, an outside air introduction port introducing the outside air, at least one door for controlling an opening degree of the inside air introduction port and the outside air introduction port, means for detecting a humidity inside the vehicle compartment, means for judging whether window glass of said vehicle compartment is liable to fog up in accordance with the humidity detected by said detecting means, first means for controlling said conditioning means to prevent said window glass from fogging up as defrost control when the window glass inside said vehicle compartment is judged liable to fog up by said judging means and not performing said defrost control when the window glass in said vehicle compartment is judged resistant to fogging by said judging means, and second means for controlling said conditioning means to control an open position of said at least one door so as to increase a ratio of said inside air introduced into the vehicle compartment when the vehicle compartment is heated under heating control by said conditioning means and the window glass inside the vehicle compartment is judged resistant to fogging by said judging means.