| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject device capable of safely preventing the bird dropping pollution at a low cost without deteriorating a beautiful appearance by arranging a fine wire, a rope, a yarn, etc., above a bird-perching place in a stretched state. SOLUTION: A fine wire, a rope, a yarn, etc., on which a bird can not perch is disposed with support metal fittings 2 and bolts 5, etc., above a bird-perching place such as the box girder 1 of a bridge, the high rail or protective fence of a bridge or the top chord of an arch bridge or truss bridge in a stretched state. When the support metal fittings 2 are attached at a constant distance, and further when the wire, etc., is disposed for each section between the support metal fittings in stretched states, a work stand can be set for each section. When the attaching angles of the metal fittings can be controlled, the positions of the wire, etc., can easily be controlled. |
