| 摘要 |
The present invention relates to a chair for keeping the straight posture of the user, including a seat base, a back rest connected at a desired angle to the seat base, and a head rest mounted on the top center portion of the back rest. The seat base is comprised of an upper seat surface with its front portion inclined to the ground E at a desired angle, and a venting hole or a groove formed on a center portion of the seat base with a predetermined depth, the size of the venting hole corresponding to about 20% to 40% of the entire area of the upper seat surface, so that when the user sits thereon the groin region between the thighs of the user is not compressed. Also, the present invention relates to a detachable seat base for a chair for keeping the straight posture of the user. |
