To provide a vehicular wind direction adjusting device which prevents a louver from breaking into pieces if the body of a passenger on a vehicle contacts the operation knob provided in air outlets in a cabin on a sudden stop of a vehicle.

The vehicular wind direction adjusting device 100 comprises: a case 10, both ends of which are open and one end of which is connected to the outlet of a vent duct 102 of a vehicular air-conditioning device 101; a louver 70, which has a plurality of louver vanes 42 (42e), at both ends of which shaft parts 42a are formed and which is arranged inside the case 10; and first and second bearing plates 22, 23, which have bearing parts 22ba, 22bb, 22bc which pivotally support the shaft parts 42a provided at both ends of a plurality of the louver vanes 42 (42e). The adjusting device 100 adjusts the wind direction of air blown out from the vent duct 102 by changing the direction of a plurality of the louver vanes 42 (42e). In this device, notch 22ga is provided on either one of the first and second bearing plates 22, 23.