| 摘要 |
PROBLEM TO BE SOLVED: To provide a support device which is temporarily mountable and removable in a hole of a side ditch of a road with a simple mounting means even in a road where no guide rail is set up. SOLUTION: A support device 100 of various kinds of sign boards 40 is mounted by using a removable hole 3 or a grille-shaped hole 3 formed on a joint area which is adjacent to a concrete-made cover 1 which closes a side ditch S of a road R where there are provided a screw rod 5, a support 15 of a sign board 40 provided on the screw rod and extended in the axial core direction, a seat board 13 which is fitted in the screw rod 5 and covers the top of the cover, a fastening means C which is engaged with the screw rod 5 on the top side of the seat board 13, a locking piece 11 which is provided on the lower end of the screw rod 5 and insertible into the hole 3 and locked with the hole 3 by changing the direction and a turning stopper means 50 which is provided on the post support 15 or the side surface of the screw rod 5 and inserted into the hole 3. |
