Lcd billboard

Details Lcd billboard Lcd billboard

G - Physics

09

F

G09F 9/35 (2006.01) G09F 13/06 (2006.01)

Patent

CA 2555156

The invention relates to a large-surface billboard (1) for outdoors advertising. In order to generate a luminosity of the LCD elements of said billboard, extraneous light is required. In times of insufficient sun light, an artificial lighting device (7) activates the luminosity. The aim of the invention is to prevent the lighting device (7) from casting a shadow onto the billboard during daylight. For this purpose, the lighting device (7) is moved out from its beam path incident on the billboard when there is sufficient solar radiation.

L'invention concerne un panneau publicitaire LCD de grande surface, pour publicité à l'extérieur. Pour la production d'une énergie lumineuse par les éléments réfléchissants LCD, on a recours à une lumière indépendante. Pour des périodes de lumière solaire insuffisante, on utilise un dispositif d'illumination artificielle pour l'activation de l'énergie lumineuse. Afin d'empêcher que le dispositif d'illumination projette une ombre sur le panneau publicitaire pendant l'éclairement solaire, le dispositif d'illumination est déplacé, lors d'un rayonnement solaire insuffisant, à partir de son faisceau de rayons tombant sur le tableau publicitaire.

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