| 摘要 |
PROBLEM TO BE SOLVED: To provide a new traffic sign tower which is installed on a road to give a predetermined indication to a vehicle.SOLUTION: A sign tower body 1, which assumes a hollow shape having a tower-like swelling part 1b integrally and continuously provided in a central part of a disk-like base plate part 1a, is formed of a material having flexible deformability based an impact and restorability. Gas or a liquid is airtightly encapsulated in the sign tower body 1. A required control material for controlling swelling based on press-in inflow of the gas or the liquid in a part of the tower-like swelling part 1b, which is generated when a compressive force acts on the tower-like swelling part 1b, and restoration is provided inside the disk-like base plate part 1a continuing into the part of the tower-like swelling part 1b. |
