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1. 发明授权

US5697175A Low power drain illuminated sign 失效
标题翻译：低功耗LED照明标志
公开(公告)号：US5697175A
公开(公告)日：1997-12-16
申请号：US472432
申请日：1995-06-07
申请人： Steven Schwartz
发明人： Steven Schwartz
IPC分类号： G09F13/00 , G09F13/04 , G09F13/14
CPC分类号： G09F13/14 , G09F13/00 , G09F2013/0422 , G09F2013/0459 , G09F2013/145 , Y10S362/80 , Y10S362/812
摘要： An illuminated sign apparatus comprised of a reflector with dedicated cavities. Each letter and, optionally, background area, comprises a shaped cavity, illuminated indirectly by a plurality of near-point sources such as light-emitting diodes located in the center of the cavity, either on a separate perpendicular circuit board or on a central projection formed in the bottom of the cavity, with the light emitted by the sources pointed outwards. In another embodiment, the letter cavities and background are illuminated by parallel boards along the top, bottom, and (optionally) middle of the letter cavities, with the light sources directed along the axes of the letter strokes. In another embodiment, the light sources in the center of the cavity are electroluminescent and ultraviolet emitting, and the cavity can be coated with a UV activated flourescent coating which is activated by the EL light source. The light is evenly reflected upward toward the viewer, giving the illusion of a solid letter or background. The cavities may be filled with a transparent substance.
摘要翻译：一种照明标志装置，由具有专用空腔的反射器组成。每个字母和任选的背景区域包括成形的腔，其被多个近点源间接照射，例如位于空腔中心的发光二极管，或者在单独的垂直电路板上或在中心突起形成在腔的底部，由光源发出的光指向外侧。在另一个实施例中，字母腔和背景沿着字母腔的顶部，底部和（任选地）中间的平行板照射，光源沿着字母笔划的轴线指向。在另一个实施例中，空腔中心的光源是电致发光和紫外线发射的，并且可以用由EL光源激活的UV活化的荧光涂层涂覆空腔。灯光均匀地向观察者反射，给出了一个坚实的字母或背景的错觉。空腔可以填充有透明物质。

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