PURPOSE: To adjust the left and right directions of airflow automatically and send the air uniformly by a method wherein a motor, having up-and-down airflow direction controlling plates in a blow-off louver as well as a crank at the end part thereof and provided with groups of left-and-right airflow direction changing plates arranged symmetrically so as to pinch the central part thereof, is equipped.

CONSTITUTION: The adjustment of air flow in up-and-down direction is effected in two stages by rotating the left and right rotating shafts 6, 7 of the blow-off louver 5 to rotate the louver 5 itself into up-and-down direction and, further, by moving up-and- down airflow direction adjusting plates 8 into up-and-down. The left-and-right airflow direction is controlled by rotating the crank 14 of the motor 13, provided at the end part of the blow-off louver 5, to move a movable plate 16 reciprocally into left-and- right about a supporting point 017. The movable plate 16 is connected through the crank 14 and a rod 15. The reciprocating motion may be transmitted to the groups 9, 10 of the left-and-right airflow direction changing plates by engaging the boss 19 of an arm 11, projected from the left-and-right airflow direction changing plates A, B which are arranged at both sides of the movable plate 16, with the hole 18 of the movable plate 16.