Architectural lighting apparatus

• US 4,143,411 A
• Filed: 01/07/1977
• Issued: 03/06/1979
• Est. Priority Date: 01/07/1977
• Status: Expired due to Term

• Current Assignee: Roberts Step-Life Systems Incorporated
• Original Assignee: Thomas E. Roberts
• Inventors: Roberts, Thomas E.
• Primary Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US05/757,467
• Time in Patent Office: 788 Days
• Field of Search: 362/268, 362/270, 362/272, 362/291, 362/806, 362/278, 362/145, 362/146, 362/234, 362/252, 362/362
• US Class Current: 362/145
• CPC Class Codes: E04F 2011/1048 with lighting means
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21V 17/04 the fastening being onto or by the light source
• CPC Class Codes: F21V 21/04 Recessed bases
• CPC Class Codes: F21W 2111/027 for indicating kerbs, steps or stairs
• CPC Class Codes: Y10S 362/806 Ornamental or decorative

Abstract

Lighting apparatus for architectural usage wherein the lighting structure can be permanently placed in predetermined disposition to render relatively trouble-free and long service life. The apparatus consists of a tubular lighting element, which can be fabricated in any desired length of whatever the selected wattage rating, that is utilized in combination with a seating structure that may be permanently secured in or about the architectural structure utilizing such lighting design. The lighting element consists of a clear tube containing a selected plurality of low wattage light bulbs as used in combination with a retaining structure which is adapted for captive retention within a molded cementitious structure of the like, while defining a groove or insert portion for selective retention of the lighting element thereby to focus or direct light at selected angles to illuminate the desired surface or area.

Claims

1. Illumination apparatus combining a lighting element and retaining structure, comprising:

transparent tubular means of selected length;

first and second buss wires extending throughout said tubular means;

a plurality of segments of series-connected plural incandescent lamps with each segment connected between said first and second buss wires, said lamps being equi-spaced along said tubular means;

an electrical source energizing said first and second buss wires;

rigid seating means of selected length and uniform cross-section which is formed to have a retaining cavity for receiving, in continuous contacting disposition, approximately one-half the circumfery of said tubular means therein; and

means for securing said tubular means within the retaining cavity.

2. Illumination apparatus as set forth in claim 1 wherein said rigid seating means further includes:

angularly disposed flanges extending from opposite sides of said retaining cavity and laterally opposed flanges extending outward from said seating element.

3. Illumination apparatus as set forth in claim 1 wherein:

said rigid seating means is unitarily formed from plastic material having good light reflection characteristics but sufficient resiliency to enable curvi-linear disposition.

4. Illumination apparatus for use in association with architectural structures, comprising:

a retaining structure of unitary formation and selected length having a cross-section defining opposed lateral flanges co-planar with an upper surface, and extending bifurcated flanges oppositely outward with each at an angle of approximately 45°

to the plane of the upper surface, while defining a cavity at said bifurcation;

lighting means of said selected length secured contiguously to the extent of approximately one-half of its circumfery within said cavity; and

means for energizing said lighting means to provide illumination along the length thereof.

5. Illumination apparatus as set forth in claim 4 which is further characterized in that:

said retaining structure is extruded and has uniform cross-section along the entire length.

6. Illumination apparatus as set forth in claim 5 wherein:

said retaining structure is extruded from flexible plastic material.

7. Illumination apparatus as set forth in claim 4 wherein said lighting means comprises:

tubular means containing a plurality of plural lamp series segments, each of said segments being connected in parallel, and said total number of lamps being arrayed in consecutive, equi-spaced disposition along the length of said tubular means.

8. Illumination apparatus as set forth in claim 7 wherein:

each of said lamps is of fractional wattage and said means for energizing is a low voltage alternating current.

9. An architectural illumination apparatus adapted for use with mold-formed cementitious materials, comprising:

a retaining structure of unitary formation and selected length having a cross-section defining opposed lateral flanges co-planar with a flat surface which are formed to be held in interlocked retention within said cementitious material while exposing a cavity outward therefrom; and

lighting means of said selected length disposed to the extent of approximately one-half its circumfery, securely in said retaining structural cavity.

10. An architectural illumination apparatus as set forth in claim 9 wherein said retaining structure cross-section further comprises:

reflective flanges extending outward from each side of said cavity to define a recess for said lighting means.

11. Apparatus as set forth in claim 10 wherein said reflective flanges are disposed at equal but opposite angles relative to the bisector of the cavity and flat surface.

12. Apparatus as set forth in claim 10 wherein said reflective flanges are disposed at different angles relative to the bisector of the cavity and flat surface.