PURPOSE: To improve the distribution of indoor temperature and restrict noise by a method wherein each of room temperature sensors is installed in an air blowing region of a fan, the number of revolution of the fan and an angle of a louver at an air blowing port are controlled in response to a detected value of each of the room temperature sensors in each of the air blowing regions.

CONSTITUTION: A room temperature is detected by a plurality of sensors 12, 13, 14 and 15. A control part 16 controls a rotational speed of each of fan motors 5 and 6 and an angle of each of divided lateral louvers 9a and 9b, so that it is possible to change an amount of blown air and an air direction in response to a temperature distribution, resulting in that a distribution of indoor temperature can be improved and then a comfortable feeling can be improved. Since the number of revolution of the fans 3 and 4 can be controlled in response to the temperature distribution of the blowers, no excessive operation of the fans 3 and 4 is prevented and thus noise is restricted.