| 摘要 |
PURPOSE: To improve convenience by providing a pair of tubes orthogonal with a panel under the panel and inserting a cylindrical bag filled with sand, etc., in the tubes to stand the panel on a road. CONSTITUTION: A base 2 is formed of two tubes 3, 4, which are orthogonal to the plane of a panel 1 and tapered in their longitudinal direction. Next, cylindrical ballasting pieces 5, 6 made of flexible material such as fabric are filled with sand, etc., and inserted to the tubes 3, 4 to stand the panel 1 on the road. Thus, soil in a field can be utilized and the ballasting pieces can be wasted after using. In addition, a space for transporting and keeping is reduced and using is facilitated. |
