Abstract: An air conditioning device has an electric blower, an air conditioning case, a cooling heat exchanger, and a partition wall. The electric blower has an electric motor, a fan, and a blowing case. Air from the blowing case flows toward the vehicle interior through the air conditioning case. The cooling heat exchanger is disposed in the air conditioning case. The partition wall is disposed on an upstream side of the cooling heat exchanger in the air conditioning case and partitions an inside of the air conditioning case into a first ventilation path and a second ventilation path. The blowing case is connected to a portion of the air conditioning case located on the upstream side of the cooling heat exchanger. The portion of the air conditioning case supports the partition wall formed along a flow direction of a main flow of the air blowing from the blowing case.