Patent ID: 6823618
Filing Date: 2004-11-30
Classification: G09F

Abstract:
An advertisement light box comprising a main frame having four lateral sides each having a guiding slot for insertion of a pivotal shaft, four panels, four cornered panels, and a light guiding structure, wherein one side of said pivotal shaft is provided with a recessed side engageable with one side of a respective one of said panels and one side of a respective one of said cornered panels, another side of said pivotal shaft is provided with a recessed edge for mounting of an end of an elastic plate, an inner lateral side of a respective one of said panels is engaged with another end of said elastic plate thereby causing two ends of said elastic plate to be urged and therefore providing said panels with a tendency to be sprung open, said panels being connected with said cornered panels by a connection plate, said main frame being provided with at least a clip for mounting an advertisement, said light guiding structure comprises a light reflective board, a light guiding board and a diffuser board mounted in sequence on a support of a rear board of said main name, four sides of said light guiding board are each engaged with an inverted U-shaped structure board, a plurality of light tubes are mounted within said inverted U-shaped structure board, and an inner wall of said inverted U-shaped board is electroplated with silver surface.