Self-standing reflector for a luminaire and method of making same

• US 6,464,378 B1
• Filed: 11/28/2000
• Issued: 10/15/2002
• Est. Priority Date: 12/14/1998
• Status: Expired due to Term

• Current Assignee: LSI Industries Incorporated
• Original Assignee: LSI Industries Incorporated
• Inventors: Bankemper, Andrew J., Vanden Eynden, James G., Reed, Mark C., Fischer, Jerry F., Kaeser, Robert E.
• Primary Examiner(s): Husar, Stephen
• Assistant Examiner(s): Ward, John Anthony
• Application Number:
  US09/723,924
• Time in Patent Office: 686 Days
• Field of Search: 362/298, 362/320, 362/297, 362/346, 362/350, 362/347, 362/341, 362/296
• US Class Current: 362/320
• CPC Class Codes: F21V 7/10 Construction

Abstract

A luminaire reflector formed from at least one sheet of reflective material is folded and curved by hand to form a self-standing reflector having a predetermined three-dimensional reflector shape. Each sheet of reflective material includes integral panels that are joined to adjacent panels through fold lines that allow the panels to be folded by hand. The panels have free edges that are folded and/or curved into abutting relationship. The panels include locking members and positioning tabs formed adjacent the free edges to retain the reflector in a predetermined three-dimensional reflector shape. Methods of making a self-standing reflector for a luminaire are also disclosed.

Claims

1. A self-standing reflector for a luminaire having a light source securable therein and an opening through which light from the source is emitted, comprising:

a plurality of reflective panels formed from at least one sheet of reflective material and folded along fold lines pre-formed in said at least one sheet into abutting relationship to define a predetermined three-dimensional reflector shape, at least one of said panels being curved to define a curved reflective surface and having at least one free edge abutting adjacent a free edge of an abutting panel upon folding of said panels, wherein said curved panel has a discrete first locking member formed proximate the free edge thereof for locking engagement with a discrete second locking member formed proximate the free edge of said abutting panel, whereby said first and second locking members cooperate upon folding of said panels to retain said reflector in said predetermined three-dimensional reflector shape.

2. The reflector of claim 1 wherein at least one of said panels is joined to an adjacent panel through an associated fold line.

3. The reflector of claim 2 wherein said fold line comprises a plurality of elongated slots formed through the thickness of said at least one sheet of reflective material and aligned along said fold line.

4. The reflector of claim 1 wherein a pair of abutting panels each include at least one positioning tab extending outwardly from a free edge thereof to overlie said other abutting panel and maintain abutting relationship of said free edges.

5. The reflector of claim 1 wherein a pair of abutting panels each include a substantially non-linear free edge for abutting a substantially non-linear free edge of said other abutting panel.

6. The reflector of claim 1 wherein one of said first and second locking members comprises a locking tab and said other comprises a locking slot, wherein said locking tab is adapted to be inserted into said locking slot and form a locking engagement therebetween.

7. The reflector of claim 6 wherein said locking tab includes a detent member adapted to engage said locking slot upon insertion therein.

8. A self-standing reflector for a luminaire having a light source securable therein and an opening through which light from the source is emitted, comprising:

a plurality of reflective panels formed from at least one sheet of reflective material and folded into abutting relationship to define a predetermined three-dimensional reflector shape, wherein at least two of said panels are curved to define curved reflective surfaces and include substantially non-linear free edges abutting substantially non-linear free edges of abutting curved panels, whereby a substantially contiguous curved reflective surface is formed by said abutting curved panels.

9. The reflector of claim 8 wherein a pair of abutting panels each include at least one positioning tab extending outwardly from a free edge thereof to overlie said other abutting panel and maintain abutting relationship of said free edges.

10. The reflector of claim 8 wherein one of said first and second locking members comprises a locking tab and said other comprises a locking slot, wherein said locking tab is adapted to be inserted into said locking slot and form a locking engagement therebetween.

11. The reflector of claim 10 wherein said locking tab includes a detent member adapted to engage said locking slot upon insertion therein.

12. A self-standing reflector for a luminaire having a light source securable therein and an opening through which light from the source is emitted, comprising:

a plurality of reflective panels formed from at least one sheet of reflective material and folded into abutting relationship to define a predetermined three-dimensional reflector shape, wherein at least one of said panels has free edges abutting adjacent free edges of an abutting panel upon folding of said panels, said pair of abutting panels each including at least one positioning tab extending outwardly from a free edge thereof to overlie said other abutting panel and maintain abutting relationship of said free edges, and cooperating locking members formed proximate the free edges of said abutting panels to retain said reflector in said predetermined three-dimensional shape.

13. A luminaire assembly, comprising:

a luminaire housing;

a reflector mounted within said luminaire housing comprising a plurality of reflective panels formed from at least one sheet of reflective material and folded along fold lines pre-formed in said at least one sheet into abutting relationship to define a predetermined three-dimensional reflector shape, wherein at least one of said panels has free edges abutting adjacent free edges of an abutting panel upon folding of said panels, and cooperating discrete locking members formed proximate the free edges of said abutting panels to retain said reflector in said predetermined three-dimensional shape;

a light source socket disposed within said reflector; and

a light source mounted within said socket for emitting light upon energizing said source to produce a predetermined light distribution pattern defined by said reflector shape.

14. The luminaire assembly of claim 13 further comprising a bracket mounted to said reflector for supporting said light source socket.

15. The luminaire assembly of claim 14 wherein said bracket includes a pair of spaced flanges joined by a central web, wherein said light source socket is mounted to said cental web and said pair of flanges are releasably securable to said reflector.

16. The luminaire assembly of claim 13 wherein at least one of said panels is joined to an adjacent panel through an associated fold line.

17. The luminaire assembly of claim 16 wherein said fold line comprises a plurality of elongated slots formed through the thickness of said sheet of reflective material and aligned along said fold line.

18. The luminaire assembly of claim 13 wherein at least some of said panels include at least one positioning tab extending outwardly from a free edge thereof to overlie an abutting panel and maintain abutting relationship of said free edges.

19. The luminaire assembly of claim 13 wherein at least two of panels include a substantially non-linear free edge for abutting adjacent a substantially non-linear free edge of an abutting panel.

20. A method of making a self-standing reflector for a luminaire, comprising:

forming a plurality of reflective panels from at least one sheet of reflective material;

folding at least one of said panels by hand along a fold line pre-formed in said at least one sheet;

curving at least one of said panels by hand to define a curved reflective surface;

folding said curved panel along a fold line pre-formed in said at least one sheet;

abutting a free edge of said curved panel adjacent a free edge of an abutting folded panel; and

locking said curved panel into engagement with said abutting folding panel through direct locking cooperation of said curved panel and said abutting folding panel.

21. The method of claim 20 wherein said forming step comprises die cutting said at least one sheet of reflective material.

22. The method of claim 20 wherein said locking step comprises:

forming a first locking member proximate the free edge of said curved panel;

forming a second locking member proximate the free edge of said abutting folded panel; and

locking said first and second locking members.

23. The method of claim 20 further comprising:

forming a pair of panels;

forming at least one substantially non-linear free edge on each of said pair of panels; and

adjacently abutting said substantially non-linear edges of said panels by folding said panels into abutting relationship.

24. The method of claim 23 further comprising:

forming at least one positioning tab extending outwardly from the substantially non-linear free edges of said pair of panels; and

folding said pair of panels whereby said positioning tab of one of said abutting panel overlies the other abutting panel.

25. A method of making a self-standing reflector for a luminaire, comprising:

forming a plurality of reflective panels from at least one sheet of reflective material;

forming substantially non-linear free edges on at least two of said panels to be curved;

curving at least two of said panels by hand to define curved reflective surfaces; and

adjacently abutting said substantially non-linear edges of said curved panels to form a substantially contiguous curved reflective surface.

26. The method of claim 25 further comprising locking said curved panels into engagement.

27. The method of claim 25 wherein said forming step comprises die cutting said at least one sheet of reflective material in a single die press operation.

28. The method of claim 25 further comprising:

forming at least one positioning tab extending outwardly from the substantially non-linear free edges of said curved panels; and

folding said curved panels whereby said positioning tab of one of said curved panels overlies an abutting curved panel.

29. A method of forming a luminaire assembly, comprising:

providing a luminaire housing;

providing at least one sheet of reflective material;

forming a plurality of reflective panels from said at least one sheet of reflective material;

folding at least one of said panels by hand along a fold line pre-formed in said at least one sheet;

curving at least one of said panels by hand to define a curved reflective surface;

folding said curved panel along a fold line pre-formed in said at least one sheet;

abutting a free edge of said curved panel adjacent a free edge of an abutting folded panel;

locking said curved panel into direct locking engagement with said abutting folded panel to define a reflector;

mounting said reflector in said housing;

providing a light source socket disposed within said reflector; and

mounting a light source within said socket for emitting light upon energizing said source to produce a predetermined light distribution pattern.

30. A self-standing reflector for a luminaire having a light source securable therein and an opening through which light from the source is emitted, comprising:

a plurality of reflective panels formed from at least one sheet of reflective material and folded along predetermined lines of bending in said at least one sheet into abutting relationship to define a predetermined three-dimensional reflector shape, at least one of said panels being curved to define a curved reflective surface and having at least one free edge abutting adjacent a free edge of an abutting panel upon folding of said panels, wherein said curved panel has a discrete first locking member formed proximate the free edge thereof for locking engagement with a discrete second locking member formed proximate the free edge of said abutting panel, whereby said first and second locking members cooperate upon folding of said panels to retain said reflector in said predetermined three-dimensional reflector shape.

31. A luminaire assembly, comprising:

a luminaire housing;

a reflector mounted within said luminaire housing comprising a plurality of reflective panels formed from at least one sheet of reflective material and folded along predetermined lines of bending in said at least one sheet into abutting relationship to define a predetermined three-dimensional reflector shape, wherein at least one of said panels has free edges abutting adjacent free edges of an abutting panel upon folding of said panels, and cooperating discrete locking members formed proximate the free edges of said abutting panels to retain said reflector in said predetermined three-dimensional shape;

a light source socket disposed within said reflector; and

a light source mounted within said socket for emitting light upon energizing said source to produce a predetermined light distribution pattern defined by said reflector shape.

32. A method of making a self-standing reflector for a luminaire, comprising:

forming a plurality of reflective panels from at least one sheet of reflective material;

folding at least one of said panels by hand along a predetermined line of bending in said at least one sheet;

curving at least one of said panels by hand to define a curved reflective surface;

folding said curved panel along a predetermined line of bending in said at least one sheet;

abutting a free edge of said curved panel adjacent a free edge of an abutting folded panel; and

locking said curved panel into engagement with said abutting folding panel through direct locking cooperation of said curved panel and said abutting folding panel.

33. A self-standing reflector for a luminaire having a light source securable therein and an opening through which light from the source is emitted, comprising:

a plurality of reflective panels formed from at least one sheet of reflective material and folded along predetermined lines of bending in said at least one sheet into abutting relationship to define a predetermined three-dimensional reflector shape; and

a plurality of backing members connected to said at least one sheet, each of said backing members having an edge defining one of the predetermined lines of bending in said at least one sheet.

34. A method of making a self-standing reflector for a luminaire, comprising:

forming a plurality of reflective panels from at least one sheet of reflective material;

operatively engaging a backing member with said at least one sheet so that an elongated edge of said backing member is positioned to lie coincident with a predetermined line of bending in said sheet; and

folding at least one of said panels by hand along said predetermined line of bending defined by said backing member.