| 摘要 |
A collapsible portable structure employs elongate side panels of a generally trapezoidal shape and has an overall height of between about 12 and about 36 inches in an expanded state and an aspect ratio of about 1.1:1 to about 1.5:1. Each panel is not more than about 21 inches wide at the widest point and may include upper and lower mesh portions, a central message-bearing portion and an optional reflective strip. Corner panels between bottom edges of adjacent side panel contain weighting material therein to improve stabilization. A top panel may be formed of a mesh material and include a central grommet.
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