Abstract: An air conditioner for cooling or heating partitioned zones of an interior of a vehicle includes an air conditioning part and air curtain forming apparatus. The air conditioning part cools and heats intake air. The cooled or heated intake air is supplied to the air curtain forming apparatus. In the air curtain forming apparatus, the cooled or heated air entering the air feeder from the air conditioning part is discharged to an air curtain forming part arranged in plural positions of the interior of the vehicle, and sprayed to form the air curtain by an air spray nozzle part and air suction nozzle part. The sprayed air is admitted to an air-exhaust part to be recirculated to the air feeder or externally discharged. A microprocessor controls the air conditioning part and air curtain forming apparatus by receiving various control signals from a temperature/operation controlling part, a temperature/recognition sensor and a mode selector.