| 摘要 |
PROBLEM TO BE SOLVED: To reduce difference between operating force in changing a blowing-out direction to an outward direction and operating force in changing the same to a center direction.SOLUTION: A wind direction adjustment mechanism 100 has a fixed plate 10 provided with fixing projections 12, a movable plate 20 moved in parallel with the fixed plate 10 and provided with circular arc-shaped angle holding grooves 22 to which the fixing projections 12 are intruded, and a plurality of wind direction plates 30 vertically disposed over the fixed plate 10 and the movable plate 20 in parallel with each other. A large diameter-side inner edge 23 of the angle holding groove 22 is provided with a plurality of recessed faces 29, and triangular overcoming portions 25 projecting toward a small diameter-side inner edge 24 of the angle holding groove between the recessed faces 29, and an inner inclination angle A of an inner inclined face 26 of the angle holding groove 22 of the overcoming part 25 is smaller than an outer inclination angle B of an outer inclined face 27 at a side opposite to the center of the angle holding groove 22, of the overcoming part 25. |
