| 摘要 |
PURPOSE: A head supporting device is provided, which enables a user to take a rest or a sleep while sitting on a chair. CONSTITUTION: A head supporting device comprises an upper block(100) and a lower block(200). The upper block comprises a right upper block(110) and a left upper block(120). The lower block comprises a right lower block(210) and a left lower block(220). In the center of the upper block, an upper concave part(130) having a groove of a hemi spherical shape is equipped. In the center of the lower block, a lower concave part(230) having a groove of a half cylindrical shape is equipped. |
