| 摘要 |
A temporary road sign constructed from lightweight extruded plastics material, the individual extruded members of the structure being joined together by means of angled brackets to form a planar sign frame (2a, 2b, 4) having two front legs (3a,3b) extending downwardly therefrom, a rear leg (11) being pivotally attached to the upper part of the sign frame for swinging movement about a horizontal axis between a retracted position adjacent the sign frame and an extended position wherein the rear leg (11) extends at an angle to the sign frame, the sign further comprising a pair of swinging links (9a, 9b) pivotally attached to the sign frame at one of their respective ends for swinging movement about an axis passing adjacent the upper ends of the front legs (3a,3b), and held at their other respective ends in sliding contact with the rear leg (11) of the sign, the arrangement being such that in the retracted position of the rear leg (11) the swinging links (9a, 9b) lie adjacent the rear face of the sign frame (2a, 2b, 4) and engage the rear leg (11) adjacent its upper end (11a), and in the extended position the swinging links (9a, 9b) engage the rear leg (11) adjacent its lower end (11b). <IMAGE> |
