| 摘要 |
Means (5) for conveying a group (A) of road signs (a), a pair of group of signs-conveying members (10) for conveying said group of road signs with supporting both sides of a bottom portion of the group of road signs, driving means for changing over the road sign to a support-releasing condition, a pair of sign-receiving means arranged at sign-separating positions (B), moving means for approaching and separating said pair of sign-receiving means, sign-ascending and descending means (46) for supporting and ascending and descending the road sign, means (58) for correcting a posture of the road sign, sign-holding means for releasably holding the road sign, position-changing means (59) for shifting said sign-holding means ranging from a position, where the sign is separated, to a position, where the sign is installed and withdrawn, and a holding means-ascending and descending mechanism for ascending and descending the sign-holding means at said position where the sign is installed and withdrawn, are carried on a loading platform (7,8) of said travelling car body. Not only the road signs can be installed in good order at the appointed positions without being tumbled and the automatically installed road signs can be automatically withdrawn but also an improvement of safety, the labor-saving and a remarkable improvement of working efficiency can be achieved. <IMAGE> |
