IN-VEHICLE AIR CONDITIONER

An in-vehicle air conditioner includes a blower configured to send blown air to a vehicle compartment, a cooling device having a heat exchanger for cooling the blown air, and a controller configured to control the blower and the cooling device. The controller operates the blower to perform a simplified pre-air-conditioning for introducing outside air into the vehicle compartment while the cooling device is stopped, in a case where an in-vehicle battery is being charged by an external power supply and no occupant is present in the vehicle compartment. In the simplified pre-air-conditioning, the controller increases output of the blower during a predetermined period of time in a case where the cooling device has been operating immediately before an ignition switch is turned off, so as to be greater as compared to a case where the cooling device has not being operating immediately before the ignition switch is turned off.