The inside an illuminated, a box a half-shell shaped illuminated advertising element

摘要

In order to ensure that any liquid which has entered the gaps between the U-groove of the cover and the bead on the support structure will not find its way into the interior of the advertising device, thus carrying particles of dirt into the latter and causing contamination which is visible from the outside, the groove of the cover is preferably formed with a beading integrally extending from the base of that groove. In particular, the beading may be so formed that a narrow slit connects the interior of the beading with the groove of the cover. The beading is thus circular of tear-shaped, for instance, in cross section.