PURPOSE: To contrive to improve the response property for the temperature changing of a blowing air flow by a method wherein an angle of an air-blowing grille is adjusted with the expansion and contraction of a coil, which is made of a configuration memory alloy, caused by the temperature changing of the blowing air flow, in the angle adjusting grille of an air conditioning device.

CONSTITUTION: At the cooling operation of an air conditioning device, a coil 1 made of a configuration memory alloy is contracted with a blowing cool air flow, a fork link 6 is pivoted about an air-blowing grille pivoting shaft 7 with a supporting point of the pivoting via an upper plate 2 fixed on upper part and a shaft 3 located at the side of the upper plate, then an air flow introducing louver 5 is pivoted toward horizontal direction. On the other hand, at the heating operation, the coil 1 is expanded by heated air flow, then the air flow introducing louver 5 is pivoted about the air blow grille central shaft toward lower direction, the hot air flows downward. Further, a masking plate 8 is fixed at the downstream side of the upper plate 2, the air flow is made to be contacted effectively with the coil 1, accordingly, the response property of the coil 1 is improved.