| 摘要 |
<p>PURPOSE:To eliminate the danger of a display net being damaged by strong wind so as to make it unnecessary for the net to be removed even in the event of a typhoon and facilitate the maintenance of the net by mounting a display frame on double rails mounted to a structure, and extending the display net inside the display frame. CONSTITUTION:Each double rail 9 is integrally formed by joining the side edges 9b of two C-shaped channels together in such a way that the openings 9a of the C-shaped channels are opposite each other. To mount the double rail 9 to angle steels 2 serving as component members of an iron tower and the like, the double rail 9 is fixed to a desired position of each angle steel 2 via a bolt 11 and washer 12, the bolt 11 having its head portion inserted into one opening 9a. To mount a display frame 4 on the double rail 9, a bolt having its head portion inserted into the other opening 9a is passed through the pipe 5 of the display frame 4 and fastened. Since a display unit is so designed that its display net 6 is extended inside the display frame 4, the net 6 would not swing violently even with strong wind.</p> |
