LCD billboard

Details LCD billboard LCD billboard

2008-06-10

2008-06-10

Lee, Jong-Suk (James) (Department: 2885)

Illumination

Light source and modifier

Condition responsive

C362S812000

Reexamination Certificate

active

07384171

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.

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patent: 2002/0163880 (2002-11-01), Matsumoto
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patent: WO 01/88 688 (2001-11-01), None
patent: WO 02/073 57 (2002-01-01), None

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