PURPOSE: To perform comfortable air-conditioning at the time of sleeping by detecting a temperature in a bed and a room temperature, and controlling an air-conditioning unit for executing air-conditioning to the inside of the bed.

CONSTITUTION: Air-conditioning in a bed is executed by an air-conditioning unit 7. Also, a controller 11 detects a temperature in the bed and a room temperature and controls the air-conditioning unit 7. As a result, comfortable air- conditioning in the bed can be executed at the time of sleeping.