Air conditioner and control method therefor

In an air conditioner for a vehicle including a vehicle roof capable of opening, there are provided a driver seat (22) and a passenger seat (22) which are provided at right and left sides in a vehicle compartment, plural conditioned-air blow-off ports (79, 82, 87, 88) provided for the driver seat (22) and the passenger seat (22) respectively, and an air conditioning control device (100) operative to adjust respective characteristics of conditioned air for the driver seat (22) and the passenger seat (22), separately. Accordingly, needs of each passenger on the