Vehicle air conditioner

A vehicle air conditioner comprising:

• an air conditioner unit installed in a vehicle, the air conditioner unit generating conditioned air;
• a first duct having one end connected to the air conditioner unit and another end open at a vehicle front side of a rear seat of the vehicle, the first duct carrying the conditioned air from the air conditioner unit toward a vehicle upper side portion of the rear seat;
• a second duct, having one end side directly or indirectly connected to the air conditioner unit and another end side laid out inside a front seat of the vehicle, and through which the conditioned air from the air conditioner unit flows;
• a blower provided at the front seat, the blower blowing out the conditioned air from the other end of the second duct from the front seat;
• a switch device provided at the one end sides of both the first duct and the second duct, the switch device switching between a first state that permits the conditioned air to flow into the second duct and restricts the conditioned air from flowing into the first duct, and a second state that permits the conditioned air to flow into the first duct and restricts the conditioned air from flowing into the second duct;
• an occupant detection device detecting whether or not a rear seat occupant is seated at the rear seat;
• and
• a controller, based on a detection result of the occupant detection device, controlling the switch device to the first state in a case in which there is no rear seat occupant seated at the rear seat, and to the second state in a case in which an occupant is seated at the rear seat.