AIR CONDITIONING DEVICE FOR VEHICLE

To protect an accumulator tank from heat damage while suppressing heat loss by shortening a connection path between an external heat exchanger and the accumulator tank. An external heat exchanger 2 and the accumulator tank 3 are provided in the circulation path of a heat medium. In the air conditioner for a vehicle, the external heat exchanger 2 is disposed in a sideways position between member front ends of a pair of left and right side members 109, 109 extending in the vehicle longitudinal direction, with the heat-exchanging surface facing forward in the vehicle. The accumulator tank 3 is disposed in a front corner area E that is formed in a position that is to the outside in the vehicle width direction from the member front end of one side member 109 of the pair of left and right side members 109, 109 and that is in front of a vehicle wheel house 17 covering a front tire 18.