Lighting fixture insulating system

• US 4,544,992 A
• Filed: 10/03/1983
• Issued: 10/01/1985
• Est. Priority Date: 10/03/1983
• Status: Expired due to Term

• Current Assignee: Craig H. Cover
• Original Assignee: Craig H. Cover
• Inventors: Cover, Craig H.
• Primary Examiner(s): Nelson, Peter A.
• Application Number:
  US06/538,172
• Time in Patent Office: 729 Days
• Field of Search: 362/147, 362/294, 362/404, 362/408, 362/409, 362/410, 362/369
• US Class Current: 362/147
• CPC Class Codes: F21V 25/00 Safety devices structurally associated with lighting devices gas- tight or water-tight arrangements F21V31/00; in general F16P; protective circuit arrangements per se H02H7/00
• CPC Class Codes: F21V 29/15 Thermal insulation

Abstract

The present invention is directed to a lighting fixture thermal insulating system which incorporates the spaceage technology of layered metallized polymer insulation. The present invention utilizes a structure and combination which yields an insulation system of superior performance while being cost competitive and because of reduced space requirement creates greater freedom of design in the manufacture of lighting fixtures. The laminations of metallized polymer and a spacer material may be located above or below the mounting pan or both.

Claims

1. In a lighting fixture having a mounting pan for ceiling or wall mounting, thermal insulation affixed to said mounting pan, and a lightbulb, the improvement, comprising:

thermal insulation containing two or more layers of a low-emissivity polymer,

a metal deposited on each polymer layer, and

an insulating spacer material located between the layers of said metallized polymer.

2. A lighting fixture in accordance with claim 1 wherein said metal is located between said lightbulb and the polymer on which it is deposited.

3. A lighting fixture in accordance with claim 2 wherein said thermal insulation is located between the face of the mounting pan and the lightbulb.

4. A lighting fixture in accordance with claim 2 wherein said insulation is located between the face of the mounting pan and the ceiling or wall on which it is mounted.

5. A lighting fixture in accordance with claim 2 wherein said thermal insulation is affixed to both sides of the mounting pan.

6. A fixture in accordance with claim 5 wherein a metal foil is located between the thermal insulation and the lightbulb.

7. A lighting fixture in accordance with claim 6 wherein said spacer material is fiberglass.

8. A lighting fixture in accordance with claim 7 wherein said polymer is a low-emissivity polyethyleneterephthalate.

9. A lighting fixture in accordance with claim 8 wherein said metal deposited on said polymer is aluminum.