Vehicle air-conditioning apparatus

A vehicle air-conditioning apparatus, including: a refrigerant circulation channel 90 that flows a refrigerant 40, the refrigerant circulation channel provided in a refrigeration cycle system including, as connected in a cyclic pattern, a compressor 1 for the refrigerant, an outdoor heat-exchanger 2 exchanging heat between the refrigerant and an outdoor air, an expansion valve 23 reducing pressure of the refrigerant, and an air-conditioning heat-exchange circuit 91A exchanging heat between the refrigerant and air to be introduced into a vehicle interior; and an equipment heat-exchange circuit 91B connected in parallel to the circuit 91 and exchanging heat between the refrigerant and in-vehicle equipment 9. The circuit 91B includes a cooling heat-transfer medium circulation channel 91B that circulates a heat-transfer medium for cooling. The channel 91B has a cooling heat-exchanger 4B exchanging heat between the refrigerant in the channel 91B and a cooling heat-transfer medium 41B for cooling the in-vehicle equipment and a cooling circulation pump 5B for circulating the cooling heat-transfer medium.