| 摘要 |
PURPOSE:To set the video display device integrated into a back face side of a back rest part to an optimal screen position. CONSTITUTION:On the back side of a back rest part 2, a recessed part 5 is formed, and in a bottom part of this recessed part 5 and a back center part of a video display device 10, spherical supporting mechanisms 7, 12 for supporting the video display device 10 so as to be freely oscillatable are installed, and the video display device 10 is integrated into the recessed part 5. |
