| 摘要 |
<p>The device comprises a panel of non-opaque material forming an advertisement, information panel, signboards, signposts or signalling posts or the like. The panel is associated with at least one light source which faces one of the edges of the panel. The panel carries an engraving or reflecting surfaces deflect the light to define the information displayed. The panel is carried by a housing on a post and the light source is located within the housing.</p> |
