Lighting system for car top sign
First Claim
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1. A lighting fixture for a car top sign, said sign formed as a triangular truncated pyramid having three faces of a translucent material for bearing a message and a triangular top surface, comprising:
- a circular reflector having a convex surface thereof for efficient reflection of light, said reflector symmetrically attached to an interior surface of said triangular top surface;
three electric lamps in which each lamp depends from said convex surface opposite each respective apex of said triangular truncated pyramid and positioned to illuminate each of the adjacent faces of said truncated pyramid;
electrical connection leads from said lamp for connection to a source of electrical power; and
each of said faces thereby receiving overlapping reflected and direct illumination from two of said lamps, the curvature of said convex surface selected to concentrate light from said lamps on said panels.
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Abstract
A lighting system for a translucent plastic car top sign having three side panels forming a truncated triangular pyramid and a top is disclosed. A convex reflector surface depends from the top and has three electric lamps oriented to be aligned with the apexes of the triangular pyramid such that each panel is illuminated by overlapping of direct and reflected light from the lamps. A translucent diffuser dome may be disposed over the reflector and lamps.
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Citations
3 Claims
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1. A lighting fixture for a car top sign, said sign formed as a triangular truncated pyramid having three faces of a translucent material for bearing a message and a triangular top surface, comprising:
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a circular reflector having a convex surface thereof for efficient reflection of light, said reflector symmetrically attached to an interior surface of said triangular top surface; three electric lamps in which each lamp depends from said convex surface opposite each respective apex of said triangular truncated pyramid and positioned to illuminate each of the adjacent faces of said truncated pyramid; electrical connection leads from said lamp for connection to a source of electrical power; and each of said faces thereby receiving overlapping reflected and direct illumination from two of said lamps, the curvature of said convex surface selected to concentrate light from said lamps on said panels. - View Dependent Claims (2, 3)
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Specification
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Current AssigneeWilliam A. Elmer
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Original AssigneeWilliam A. Elmer
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InventorsElmer, William A.
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Primary Examiner(s)NOT, DEFINED
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Assistant Examiner(s)Contreras, Wenceslao J.
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Application NumberUS07/055,993Time in Patent Office750 DaysField of Search40/564, 40/152.2, 40/592, 40/591US Class Current40/592CPC Class CodesG09F 21/04 by land vehiclesG09F 21/042 the advertising matter bein...
