The invention provides an automotive air conditioning device. A control means (27) involves a fan blowing air amount setting means (27B) which is connected to an air-blowing fan (12) that can supply air that has been cooled by an electrical compressor (22) to the inside of an automobile and can set the amount of air to be blown by means of the air-blowing fan (12). The control means (27) can set the upper limit of the number of rotations of the electric compressor (22) based on the vehicle speed which has been detected by a vehicle speed detection means (37) and the amount of air to be blown which has been set by the fan blowing air amount setting means (27B).