Vehicle air-conditioning device

The objective of the present invention is to make it more difficult for condensation water to disperse when condensation water is generated on vehicle-interior refrigerant pipes provided within a casing, and thus to prevent leaks to the outside of the casing. A vehicle air-conditioning device (1) is equipped with a cooling heat exchanger (12) and a casing (11) that houses the cooling heat exchanger (12) and is arranged in the vehicle interior, and the air-conditioning device is constructed so as to adjust the temperature of air-conditioning air introduced into the casing (11) and supply this air to the vehicle interior. Vehicle-interior refrigerant pipes (23, 23) are connected to the cooling heat exchanger (12), the vehicle-interior refrigerant pipes (23, 23) are arranged in an air flow path (A1) in the casing (11), and a vertical wall (31) which reduces the flow rate of the air flowing toward the vehicle-interior refrigerant pipes (23, 23) is provided in the casing (11).