| 摘要 |
An advertising device comprising a light transmitting cover and tray-like support structure therefor. The support structure having an inwardly directed bead and the cover having a U-shaped groove which receives the bead whereby the cover is retained in position on the support structure. The edges of the support structure having lesser depth at the corners thereof than elsewhere, to facilitate mounting of the cover thereon. The support structure may include dovetail-shaped connections for modular assembly. |
