Lcd billboard
AssigneeDistec GmbH
InventorMichael Schoning
Life of this patent
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Abstract
The invention relates to a large-surface billboard for outdoors advertising. In order to generate a luminosity of the LCD elements of the billboard, extraneous light is required. In times of insufficient sun light, an artificial lighting device activates the luminosity. The aim of the invention is to prevent the lighting device from casting a shadow onto the billboard during daylight. For this purpose, the lighting device is moved out from its beam path incident on the billboard when there is sufficient solar radiation.
Claims4
Large-area LCD billboard (1) for outdoor advertising, whereby the luminosity of the reflective LCD elements of the board depends on the intensity and direction of the lighting, and an artificial lighting device (7) with lamps (13) is assigned to the board for this purpose, for times when the sunlight is insufficient, which lamps illuminate the board from the viewer side, wherein activation means (9, 11) for physically moving the lighting device (7) out of the beam path (14) of the sunlight that falls on the billboard (1) are provided.
Dependencies are inferred from the claim text.