To provide a motor drive reduced in the number of parts and providing an air conditioning device which does not make occupants on a front passenger seat and on a driver's seat feel uncomfortable.

The air conditioning device includes: a first mixing means generating first temperature conditioning air; a second mixing means generating second temperature conditioning air; a blow-out opening mode setting means 50; a first temperature setting part 21 on the front passenger seat side; a second temperature setting part 22 on the driver's seat side; first and second solar radiation amount detecting parts 41, 42; first and second inner temperature detecting parts 27, 28; and a calculation processing part 23 calculating an assist target blowout temperature and a driver target blowout temperature based on a set temperature set by the first and second temperature setting parts 21, 22, a solar radiation amount detected by the first and second solar radiation amount detecting parts 41, 42, and a temperature detected by the first and second inner temperature detecting parts 27, 28 to control the first and second mixing means. A blow-out opening mode includes a foot mode, a vent mode and a bi-level mode, and the calculation processing part 23 calculates a comfortable blow-out opening mode to change a set blow-out opening mode to the comfortable blow-out opening mode when a detected solar radiation amount and a detected temperature are out of a predetermined range.

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