A control device controls a swing action of flaps of an air conditioning apparatus. The flaps are swung up and down. The control device includes an operation mode determining section, a swing pattern storage area and a control command generator. The operation mode determining section determines at least an air-cooling operation mode and an air-warming operation mode that are operation modes of the air conditioning apparatus. The swing pattern storage area stores a plurality of swing patterns that include information pertaining to the swing action. The control command generator generates a control command of the air conditioning apparatus on the basis of a swing pattern corresponding to the mode determined by the operation mode determining section from among the plurality of swing patterns.