A vehicle air conditioning apparatus, including: a housing into which air can be blown; a cooling heat exchanger which, being housed in the housing, can cool the blown-in air; and a heating heat exchanger which, being housed in the housing and provided downstream of the cooling heat exchanger with reference to the flow of the blown-in air, can heat the blown-in air; and that inside the housing and downstream of the cooling heat exchanger are formed a first cold air path through which the cooled air can flow bypassing the heating heat exchanger; a heating path which, being adjacent to the first cold air path and provided with the heating heat exchanger, can heat the cooled air; and a second cold air path which is adjacent to the heating path and through which the cooled air can flow bypassing the heating heat exchanger, wherein the housing is provided with: a first discharge portion which can discharge the air having passed through the first cold air path and the air having passed through the heating path to outside the housing a second discharge portion which can discharge the air having passed through the heating path and the air having passed through the second cold air path to outside the housing; a partition wall which, being provided on the downstream side of the heating heat exchanger, divides the first and second discharge portions and from each other; and a cold air reach prevention portion (70; 70A) which can prevent the air having passed through the second cold air path from reaching an outflow surface of the heating heat exchanger, characterized in that the cold air reach prevention portion has a second opening/closing member which can open/close the second discharge portion and a cold air reach prevention wall portion which extends from the downstream end portion of the heating path to the second opening/closing member with reference to a position in which the second discharge portion is closed. a housing into which air can be blown; a cooling heat exchanger which, being housed in the housing, can cool the blown-in air; and a heating heat exchanger which, being housed in the housing and provided downstream of the cooling heat exchanger with reference to the flow of the blown-in air, can heat the blown-in air; and that inside the housing and downstream of the cooling heat exchanger are formed a first cold air path through which the cooled air can flow bypassing the heating heat exchanger; a heating path which, being adjacent to the first cold air path and provided with the heating heat exchanger, can heat the cooled air; and a second cold air path which is adjacent to the heating path and through which the cooled air can flow bypassing the heating heat exchanger, wherein the housing is provided with: a first discharge portion which can discharge the air having passed through the first cold air path and the air having passed through the heating path to outside the housing a second discharge portion which can discharge the air having passed through the heating path and the air having passed through the second cold air path to outside the housing; a partition wall which, being provided on the downstream side of the heating heat exchanger, divides the first and second discharge portions and from each other; and a cold air reach prevention portion (70; 70A) which can prevent the air having passed through the second cold air path from reaching an outflow surface of the heating heat exchanger, characterized in that the cold air reach prevention portion has a second opening/closing member which can open/close the second discharge portion and a cold air reach prevention wall portion which extends from the downstream end portion of the heating path to the second opening/closing member with reference to a position in which the second discharge portion is closed. a first discharge portion which can discharge the air having passed through the first cold air path and the air having passed through the heating path to outside the housing a second discharge portion which can discharge the air having passed through the heating path and the air having passed through the second cold air path to outside the housing; a partition wall which, being provided on the downstream side of the heating heat exchanger, divides the first and second discharge portions and from each other; and a cold air reach prevention portion (70; 70A) which can prevent the air having passed through the second cold air path from reaching an outflow surface of the heating heat exchanger, characterized in that the cold air reach prevention portion has a second opening/closing member which can open/close the second discharge portion and a cold air reach prevention wall portion which extends from the downstream end portion of the heating path to the second opening/closing member with reference to a position in which the second discharge portion is closed.