Vehicle window shade apparatus

A window shade device for vehicles that covers a window of a vehicle to be shielded and opened, comprising:

• a window shade configured to shield said window;
• a windup device winding up said window shade to be drawn therefrom and housed therein;
• a guide and support mechanism that includes a guide path member including a guide path along a drawing direction and a housing direction of said window shade and supports a movable member along the guide path;
• and
• an arm that includes a first end coupled to a drawing-direction edge portion of said window shade and a second end rotatably supported by said movable member, wherein the arm is configured to change a posture thereof between a first posture in which said first end is located on a housing direction side and a second posture in which said first end is located on a drawing direction side, wherein
• said arm includes a first gear, and said guide path includes a toothed rack extending substantially an entire length of said guide path, and
• the window shade device for vehicles further comprises a reduction gear mechanism, said movable member includes the reduction gear mechanism which is configured to mesh with each of said first gear and said toothed rack, wherein when the reduction gear mechanism meshes with said first gear and said toothed rack, a rotational movement is imparted unto the movable member to cause said arm to change the posture thereof between said first posture and said second posture.