Luminant sign
First Claim
Patent Images
1. A luminant sign comprising:
- a base having a pair of U-shaped opposed casings;
an image plate made of transparent material and engaged with said base;
said base having a circuit board with at least one illuminator mounted thereon, each said illuminator projecting light in a first direction, and each of said casings having a cutout defined in a top edge thereof to receive said image plate and board retaining means integrally extending from an inner face of at least one of said casings for receiving and retaining said circuit board;
a front face and a rear face of said image plate having a plurality of display areas defined by peripheral grooves having the shape of pictures or words, each said display area having a plurality of reflective surfaces defined therein, said reflective surfaces being formed by a plurality of parallel recesses, said peripheral grooves having groove portions which extend in a direction parallel to said recesses and other groove portions which extend in a direction which is nonparallel to said recesses, said surfaces being disposed on said plate to project in directions non-parallel to said light direction of said at least one illuminator.
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Accused Products
Abstract
A luminant sign comprises a base including a pair of opposed casings and a image plate made of transparent acrylic resin and engaged with the base. The base has a circuit board with a plurality of illuminators disposed therein. A front face and a rear face of the image plate have a number of display areas defined thereon by peripheral grooves of pictures or words. Each display area has a plurality of reflective surfaces formed therein in directions non-parallel to the beam directions of the illuminators. With this arrangement, each display area of the image plate will achieve a uniform intensity.
86 Citations
12 Claims
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1. A luminant sign comprising:
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a base having a pair of U-shaped opposed casings; an image plate made of transparent material and engaged with said base; said base having a circuit board with at least one illuminator mounted thereon, each said illuminator projecting light in a first direction, and each of said casings having a cutout defined in a top edge thereof to receive said image plate and board retaining means integrally extending from an inner face of at least one of said casings for receiving and retaining said circuit board; a front face and a rear face of said image plate having a plurality of display areas defined by peripheral grooves having the shape of pictures or words, each said display area having a plurality of reflective surfaces defined therein, said reflective surfaces being formed by a plurality of parallel recesses, said peripheral grooves having groove portions which extend in a direction parallel to said recesses and other groove portions which extend in a direction which is nonparallel to said recesses, said surfaces being disposed on said plate to project in directions non-parallel to said light direction of said at least one illuminator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A luminant sign comprising:
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a base having a pair of U-shaped opposed casings, said base having a circuit board with a plurality of illuminators and each of said casings having a cutout defined in a top edge thereof; an image plate made of transparent material and engaged with said base in which a front face and a rear face of the image plate having a number of display areas thereon defined by peripheral grooves of pictures or words, each display area having a plurality of reflective surfaces formed therein in directions non-parallel to beam directions of the illuminators; each of said pair of opposed casings further has two ledges integrally extending from a top and a bottom inner face thereof, each of said ledges being hook-like, and a pair of enclosure covers respectively engaged with two ends of said pair of opposed casings by means of two pairs of bosses integrally formed on said enclosure covers being respectively received in said ledges.
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12. A luminant sign comprising:
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a base having a pair of U-shaped opposed casings, each said casing having two ridges internally extending from an inner face thereof, said two ridges defining a channel therebetween to receive the circuit board, each of said pair of opposed casings further having two ledges integrally extending from a top and a bottom inner face thereof, each of said ledges being hook-like, and a pair of enclosure covers respectively engageable with two ends of said pair of opposed casings by means of two pairs of bosses integrally formed on said enclosure covers being respectively received in said ledges; an image plate made of transparent material and engaged with said base; said base having a circuit board with at least one illuminator mounted thereon, each said illuminator projecting light in a first direction, and each of said casings having a cutout defined in a top edge thereof to receive said image plate and board retaining means integrally extending from an inner face of at least one of said casings for receiving and retaining said circuit board; a front face and a rear face of said image plate having a plurality of display areas defined by peripheral grooves having the shape of pictures or words, each said display area having a plurality of reflective surfaces defined therein, said reflective surfaces being formed by a plurality of parallel recesses, said peripheral grooves having groove portions which extend in a direction parallel to said recesses and other groove portions which extend in a direction which is nonparallel to said recesses, said surfaces being disposed on said plate to project in directions non-parallel to said light direction of said at least one illuminator.
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Specification