Patent attributes
An air-conditioning register includes a downstream fin, upstream fins, a coupling rod, a shut-off damper, an operation knob, a transmission shaft, an upstream universal joint, a downstream universal joint, and a transmission mechanism portion. The operation knob includes a rotation member. The upstream universal joint couples an upstream end of the transmission shaft to the shut-off damper. The downstream universal joint couples a downstream end of the transmission shaft to the rotation member. The transmission mechanism portion transmits swinging motion of the transmission shaft caused by sliding of the operation knob to the central upstream fins, and prevents swinging motion of the transmission shaft caused by operation of the operation knob to tilt the downstream fin from being transmitted to the central upstream fins.