Lighting apparatus

• US 7,390,106 B2
• Filed: 10/27/2006
• Issued: 06/24/2008
• Est. Priority Date: 03/21/2003
• Status: Expired due to Fees

• Current Assignee: Randal D Walton
• Original Assignee: Randal D Walton
• Inventors: Walton, Randal D.
• Primary Examiner(s): Husar, Stephen F
• Application Number:
  US11/588,959
• Publication Number:
  US 20070041200A1
• Time in Patent Office: 606 Days
• Field of Search: D26/3, D26/79, 313/634, 362/216, 362/260, 362/297, 362/302, 362/304, 362/346, 362/347
• US Class Current: 362/216
• CPC Class Codes: F21V 7/0025 Combination of two or more reflectors for a single light source array of reflectors for a cluster of light sources F21V7/0083
• CPC Class Codes: F21V 7/0083 Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane combination of two or more reflectors F21V7/0025
• CPC Class Codes: F21Y 2103/30 curved
• CPC Class Codes: H01J 5/54 supported by a separate part, e.g. base
• CPC Class Codes: H01J 61/02 Details
• CPC Class Codes: H01J 61/025 Associated optical elements
• CPC Class Codes: H01J 61/32 Special longitudinal shape, e.g. for advertising purposes H01J61/305 takes precedence
• CPC Class Codes: H01J 61/327 "Compact"-lamps, i.e. lamps having a folded discharge path
• CPC Class Codes: H01J 61/34 Double-wall vessels or containers
• CPC Class Codes: H01J 61/35 provided with coatings on the walls thereof; Selection of materials for the coatings using coloured coatings H01J61/40; using luminescent coatings H01J61/42
• CPC Class Codes: H01K 1/18 Mountings or supports for the incandescent body
• CPC Class Codes: H01K 1/32 provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
• CPC Class Codes: H01K 1/325 Reflecting coating
• CPC Class Codes: H01K 7/02 for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector producing narrow beams by optical means external to lamp F21V

Abstract

The present invention comprises a method of enhancing illumination by a variety of lamp types through the use of reflective technologies, for example, replacement of expensive high intensity density of mercury vapor lamps with low wattage fluorescent tubes having at least one and in some cases, up to three reflective surfaces for focusing otherwise lost light toward a target illumination area. Further, the placement of light sources at the focal point of said reflective surfaces aids in optimizing the amount of light focused in a desired direction.

Claims

1. An illumination device comprising:

an elongate primary reflector including a reflective exterior surface having a helical path extending thereon, wherein the helical path includes a groove having an interior curve partially bounding an interior space; and

a helically curved light source coiled around the elongate primary reflector and spaced apart from the groove and at least partially disposed within the interior space, wherein the helically curved light source substantially follows the helical path.

2. The illumination device of claim 1, wherein:

the interior curve of the helical groove defines an effective radius; and

the helically curved light source is spaced apart from the helical groove a radial distance substantially equal to half the effective radius.

3. The illumination device of claim 1, wherein the groove of the elongate primary reflector is cooperatively aligned with the helically curved light source such that the groove receives the helically curved light source as the helically curved light source is coiled around the elongate primary reflector during assembly.

4. The illumination device of claim 1, wherein the helically curved light source is a fluorescent light.

5. The illumination device of claim 1, further comprising a screw base electrical connector in electrical communication with the helically curved light source.

6. An illumination device comprising:

an elongate primary reflector;

a light source coiled around the primary reflector; and

a secondary reflector having a concave reflective surface that defines an inner volume;

wherein the elongate primary reflector and the light source are disposed within the inner volume of the secondary reflector.

7. The illumination device of claim 6, wherein the secondary reflector is substantially in the shape of a paraboloid.

8. The illumination device of claim 7, wherein:

the secondary reflector includes an apex; and

the elongate primary reflector and the light source are mounted to the secondary reflector at the apex.

9. The illumination device of claim 8, further comprising a curved tertiary reflector mounted to the elongate primary reflector opposite the apex of the secondary reflector and partially surrounding the elongate primary reflector and the light source.

10. The illumination device of claim 6, wherein the light source is a fluorescent light.

11. A illumination device comprising:

an elongate primary reflector including a reflective exterior surface having a helical groove extending thereon, the helical groove forming a curved channel having an effective radius; and

a helical light source coiled around the elongate primary reflector in a path substantially following the helical groove, the helical light source being spaced apart from the helical groove a radial distance substantially equal to half the effective radius.

12. The illumination device of claim 11, further comprising a secondary reflector having a generally paraboloid shape with an interior reflective surface, wherein the secondary reflector is oriented around the elongate primary reflector and the helical light source such that the interior reflective surface faces the elongate primary reflector and the helical light source.

13. The illumination device of claim 12, further comprising a curved tertiary reflector having a concave reflective surface defining an open inner volume, the curved tertiary reflector being mounted to the elongate primary reflector such that at least a portion of the elongate primary reflector and the helical light source are disposed in the open inner volume.

14. The illumination device of claim 11, wherein the helical light source is a fluorescent light.

15. An illumination device comprising:

an elongate primary reflector including a reflective exterior surface having a helical path extending thereon, wherein the helical path includes a groove having an interior curve that defines an effective radius; and

a helically curved light source coiled around the elongate primary reflector and spaced apart from the groove a radial distance substantially equal to half the effective radius, wherein the helically curved light source substantially follows the helical path.

16. The illumination device of claim 15, wherein the groove of the elongate primary reflector is cooperatively aligned with the helically curved light source such that the groove receives the helically curved light source as the helically curved light source is coiled around the elongate primary reflector during assembly.

17. The illumination device of claim 15, wherein the helically curved light source is a fluorescent light.

18. The illumination device of claim 15, further comprising a screw base electrical connector in electrical communication with the helically curved light source.

19. An illumination device comprising:

an elongate primary reflector including a reflective exterior surface having a helical path extending thereon;

a helically curved light source coiled around the elongate primary reflector, wherein the helically curved light source substantially follows the helical path; and

a curved secondary reflector defining an open inner volume and having a concave reflective surface, wherein;

the elongate primary reflector and the helically curved light source are disposed within the open inner volume of the secondary reflector such that the concave reflective surface faces the elongate primary reflector and the helically curved light source.

20. The illumination device of claim 19, wherein the curved secondary reflector has a substantially paraboloid shape.

21. The illumination device of claim 20, wherein the curved secondary reflector includes an apex and the elongate primary reflector and the helically curved light source extending into the open inner volume substantially from the apex.

22. The illumination device of claim 19, further comprising a curved tertiary reflector mounted to the elongate primary reflector within the open inner volume of the secondary reflector.

23. The illumination device of claim 22, wherein the curved tertiary reflector at least partially surrounds the elongate primary reflector and the helically curved light source.