| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a problem with a prior art in which a blow-off direction of fan air is limited within a certain region in an upper direction, and since only the blow-off direction is altered, the width of air feeding is limited at all times to a predetermined width, which does not necessarily satisfy multiple- purpose use. SOLUTION: An air direction alteration louver 19 includes long and short two vanes 19a, 19b, and an air direction diffusion plate 19c formed integrally on the back of the second long vane 19b. Angles of the vanes 19a, 19b are properly adjusted by rotating the louver around a support shaft 20. The angles of the vanes are arbitrarily changeable within a range where a blow-off direction of fan air from a blow-off outlet 18, an upper surface and a rear surface of which outlet are opened is directed from an upper but slightly frontal direction to horizontally but slightly downward. In contrast, the air direction diffusion plate 19c strikes part of the fan air firstly when the air direction alteration louver 19 is rotated beyond a predetermined angle, to widen the width of the feeding air blown out from the blow-off outlet 18. |
