A vehicle air conditioning apparatus, comprising: an air conditioning opening which is provided in an instrument panel; an air conditioning duct which connects to the air conditioning opening; and a projecting portion provided in an interior of the air conditioning duct in a position lying near the air conditioning opening, the projecting portion including a first projecting portion and a second projecting portion which are provided at portions in the air conditioning duct which face each other, the projecting portion also including an end portion of the first projecting portion and an end portion of the second projecting portion which are placed at close positions with each other, the vehicle air conditioning apparatus being characterized in that the air conditioning opening is provided with fins extending in a direction in the air conditioning opening, that the projection portion projects in a direction intersecting the direction in which the fins extend, so as to come in abutment with a thin plate-like member which enters the air conditioning duct from the air conditioning opening to prevent the thin plate-like member from moving into the interior of the air conditioning duct, that the first projecting portion and the second projecting portion are provided so as to shift in phase in a direction in which the air conditioning duct extends, that the end portion of the first projecting portion is placed further upstream of a flow of conditioning air than the end portion of the second projecting portion in the direction in which the air conditioning duct extends, and that a gap is formed between the end portion of the first projecting portion and the end portion of the second projecting portion. an air conditioning opening which is provided in an instrument panel; an air conditioning duct which connects to the air conditioning opening; and a projecting portion provided in an interior of the air conditioning duct in a position lying near the air conditioning opening, the projecting portion including a first projecting portion and a second projecting portion which are provided at portions in the air conditioning duct which face each other, the projecting portion also including an end portion of the first projecting portion and an end portion of the second projecting portion which are placed at close positions with each other, the vehicle air conditioning apparatus being characterized in that the air conditioning opening is provided with fins extending in a direction in the air conditioning opening, that the projection portion projects in a direction intersecting the direction in which the fins extend, so as to come in abutment with a thin plate-like member which enters the air conditioning duct from the air conditioning opening to prevent the thin plate-like member from moving into the interior of the air conditioning duct, that the first projecting portion and the second projecting portion are provided so as to shift in phase in a direction in which the air conditioning duct extends, that the end portion of the first projecting portion is placed further upstream of a flow of conditioning air than the end portion of the second projecting portion in the direction in which the air conditioning duct extends, and that a gap is formed between the end portion of the first projecting portion and the end portion of the second projecting portion.