发明名称 Raceway for sign box
摘要 An electrical raceway for installation in an illuminated sign box of the type having a translucent sign panel is in the form of an elongated and hollow structure which provides reinforcement for such a sign box and a housing for electrical conductors. Such raceway has two series of knock-out discs for mounting both left-handed and right-handed lighting fixture receptacles. When such raceways are installed in a sign box, the lighting fixture receptacles can be mounted so that the lighting tubes extend between two such raceways completely across one of the series of knock-out discs in each such raceway thereby improving the overall illumination of the translucent sign panel, and reducing the patches of varied light intensity.
申请公布号 US4240130(A) 申请公布日期 1980.12.16
申请号 US19780885960 申请日期 1978.03.13
申请人 STILLING, JOHANN 发明人 STILLING, JOHANN
分类号 F21V19/00;G09F13/04;(IPC1-7):F21S3/00 主分类号 F21V19/00
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