| 摘要 |
PROBLEM TO BE SOLVED: To provide a grille shutter apparatus capable of satisfying both of reliable opening operation of a shutter mechanism and stability of a closed state thereof, by a simple configuration.SOLUTION: In each movable fin 14, fin lengths L1 and L2 in two directions with the center P of its rotation in between are set to be unequal lengths (L1>L2) so that opening-direction moment can be generated in each movable fin 14 on the basis of pressure of air flowing in from a grille opening. Upper and lower frame parts 16 and 26 of the frame 13 are provided with first and second protrusions 31 and 32 which have wall surfaces 31a and 32a forming air channels X1 and X2 between fin tips 21a and 22a by being positioned in the directions of the movements of the fin tips 21a and 22a, when each movable fin 14 is moved in a closing direction, respectively. |
