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    • 3. 发明申请
    • LIGHT BOX
    • 灯箱
    • US20110063850A1
    • 2011-03-17
    • US12563541
    • 2009-09-21
    • Ken OideShunji IshiiHideyuki Ikeda
    • Ken OideShunji IshiiHideyuki Ikeda
    • F21V7/00
    • G02F1/133603F21K9/68F21Y2115/10G02F1/133605H01L33/58
    • A light box includes a point like light source, a light reflecting plate arranged around said point like light source and a light diffusion surface plate having light transmissive property and arranged to face said light reflecting plate. The light box can include a case having an opening formed in a direction of light and for housing at least said point like light source and said light reflecting plate inside. Additionally, a receiving concave portion is formed with said light reflecting plate, said point like light source is allocated inside said receiving concave portion, an injection angle of the light from said point like light source is 0°, and a brightness is less than or equal to 15000 cd/m2 when spaced apart a distance of 350 mm, and a part or all of the light from said point like light source is provided for an illumination after reflecting at an inner surface of a circumferential wall of said receiving concave portion.
    • 灯箱包括点状光源,围绕所述点状光源布置的光反射板和具有透光性的光扩散面板,并且布置成面对所述光反射板。 灯箱可以包括具有沿光的方向形成的开口并用于至少容纳所述点状光源和所述光反射板的壳体的壳体。 此外,由所述光反射板形成接收凹部,将所述点状光源分配在所述接收凹部内,所述点状光源的光的注入角度为0°,亮度小于或等于 当距离为350mm时,等于15000cd / m 2,并且在所述接收凹部的周壁的内表面上反射之后,提供来自所述点状光源的一部分或全部光。