| 摘要 |
PROBLEM TO BE SOLVED: To prevent breakage when attached to or removed from a barricade, reduce size when not used, reduce production cost and be repaired at low cost. SOLUTION: The sign board for a barricade is modified in shape to a state where an end part opposite to a pivotal support part 7 of an upper board 5 and an end part opposite to the pivotal support part 7 of the lower board 6 are overlapped to each other and a state where the upper board 5 and the lower board 6 are deployed in almost a dogleg shape by turning the upper board 5 and the lower board 6 around the pivotal support part 7. An upper fixing hole 8 for fixing an upper single pipe 3 is bored at the end part opposite to the pivotal support part 7 of the upper board 5. An upper slit 12 with one end communicating with the upper fixing hole 8 and the other end leading to an outer edge of the upper board 5 is formed. A lower fixing hole 14 for fixing a lower single pipe 4 is bored at the end part opposite the pivotal support part 7 of the lower board 6. A lower slit 15 with one end communicating with the lower fixing hole 14 and the other end leading to an outer edge of the lower board 6 is formed. COPYRIGHT: (C)2005,JPO&NCIPI
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