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    • 3. 发明授权
    • Enhanced lighting unit for displayable materials
    • 用于可显示材料的增强照明单元
    • US4835661A
    • 1989-05-30
    • US191840
    • 1988-05-06
    • Weymouth FogelbergClement V. Fogelberg
    • Weymouth FogelbergClement V. Fogelberg
    • G09F13/04
    • G09F13/04G09F2013/0454G09F2013/0472G09F2013/0481
    • An enhanced lighting unit is disclosed that is particularly useful for lighting displayable materials such as photographs, paintings, graphics and the like. The unit is compact and includes a housing having display positioning elements that define a planar display area for viewing of displayable materials thereat. The display area can be adjacent to a display surface, such as is provided, for example, by a picture frame, for receipt of the material to be displayed thereat. The unit also includes a light diffusing surface in the housing opposite to, and substantially coextensive with, the planar display area with the light diffusing surface being disposed so that the distance between the planar display area and the light diffusing surface continually decreases along their entire lengths. A low wattage light source is attached, within the housing, adjacent to the end of the light diffusing surface wherein the distance between the light diffusing surface and the planar display area is greatest, all other components of the lighting, for example a ballast, being located outside of the housing to thereby reduce heat within the unit. In this manner, light from the light source is evenly diffused throughout the housing by the light diffusing surface thereby enhancing illumination of the material displayed at the planar display area while not necessitating increased housing depth to illuminate larger display surfaces.
    • 公开了一种增强的照明单元,其特别适用于照明,绘画,图形等可显示材料。 该单元是紧凑的,并且包括具有限定用于在其上观看可显示材料的平面显示区域的显示定位元件的壳体。 显示区域可以与显示表面相邻,例如由相框提供,用于接收在其上显示的材料。 该单元还包括在壳体中的光扩散表面,与平面显示区域相对并基本上共同延伸,其中光漫射表面被设置成使得平面显示区域和光漫射表面之间的距离沿其整个长度连续地减小 。 低功率光源在壳体内附近,与光漫射表面的端部相邻,其中光漫射表面和平面显示区域之间的距离最大,照明的所有其他部件(例如镇流器)为 位于壳体外部,从而减少单元内的热量。 以这种方式,来自光源的光通过光漫射表面在整个壳体中均匀地扩散,从而增强了在平面显示区域显示的材料的照明,而不需要增加的壳体深度来照亮更大的显示表面。