| 摘要 |
A poster display, subject to out-of-door wind forces that will develop substantial overturning forces against the poster display, is provided with a self-righting feature by using a hollow support base, with a convex support side that permits of rocking motion and that is ballasted by a flowable ballast material such as water, and upon which base, an upright, wind-catching, panel is mounted to project away from said convex support side. The base and panel are molded of inexpensive plastics. The base and panel may be formed as separate parts, or as an integral assemblage. In one preferred construction the base and panel are separate parts, have interfitting tongue and socket means provided on adjacent portions of the two parts. The panel is preferably provided with a transverse edge flange that bounds the region adapted to receive a removable display sheet thereonto. In alternate forms of construction, the concept of a convex support side that permits of rocking motion of the poster display is preserved, but the ballasting of the poster display is secured through a plate of heavy density material located either within the hollow support base, or on the exterior of the convex support side of the base of the rocking display, and with the center of gravity of the ballasting located substantially in the medial vertical plane through the poster display device. In another alternate form of construction, the display does not rock, but the poster display is free to swing relative to the support structure.
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