Adjustable LED luminaire

• US 7,311,423 B2
• Filed: 09/21/2005
• Issued: 12/25/2007
• Est. Priority Date: 09/21/2005
• Status: Expired due to Fees

• Current Assignee: AWI Licensing Company (Armstrong World Industries Incorporated)
• Original Assignee: AWI Licensing Company (Armstrong World Industries Incorporated)
• Inventors: Myers, Jere W., Frecska, Sandor A.
• Primary Examiner(s): O'Shea; Sandra
• Assistant Examiner(s): Cranson, Jr.; James W
• Application Number:
  US11/231,461
• Publication Number:
  US 20070064425A1
• Time in Patent Office: 825 Days
• Field of Search: 362/20, 362/150, 362/500, 362/545, 362/649, 362/372
• US Class Current: 362/372
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 13/12 Combinations of only three kinds of elements
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting fixture apparatus includes a frame portion, a louver portion and a diffuser lens. The louver portion includes a baffle system for passing unobstructed at least a portion of the light impinging thereon. The diffuser lens includes a surface for diffusing light rays. At least one directional lighting apparatus comprised of LED strips is attached to and supported by the frame portion. The LED strips are disposed between the louver portion and the diffuser portion. The LED assembly includes a rigid strip having a first end and a second end opposite the first end portion, and a first surface and a second surface opposite the second surface. A first rotary support member and a second rotary support member are connected to the strip portion at respective first and second ends. A plurality of electrical lighting elements are mounted on the first surface and are configured in at least one electrical circuit.

Claims

1. A lighting apparatus comprising:

two or more rigid strips, each rigid strip having a first end and a second end opposite said first end and an axis extending from the first end to the second end, and having a first surface and a second surface opposite said first surface;

the first surface and second surfaces extending from the first end to the second end; and

a plurality of electrical lighting elements mounted on the first surface of each rigid strip;

wherein at least one of the two or more rigid strips is capable of rotational movement about the axis extending from the first end to the second end and wherein the rotational movement of the rigid strip is independent of the other of the two or more rigid strips.

2. The apparatus as set forth in claim 1 wherein the electrical lighting elements are light emitting diodes (LEDs).

3. The apparatus as set forth in claim 2, wherein the LEDs are arranged in a single row.

4. The apparatus as set forth in claim 2, wherein the LEDs are arranged in a plurality of rows.

5. The apparatus as set forth in claim 2, wherein the LEDs are arranged in an array.

6. The apparatus as set forth in claim 1, wherein the rigid strip is selected from one of the group consisting of:

(i) opaque material;

(ii) translucent material and (iii) transparent material.

7. The apparatus as set forth in claim 1, wherein the plurality of electrical lighting elements are configured to operate at a nominal distribution voltage selected from the group consisting of:

110 V, 220V, 240V, 277V, 460V, 480V, 575V and 600V.

8. The apparatus as set forth in claim 1, wherein the lighting elements are configured in a plurality of electrical circuits, the electrical circuits having switching mean for selectively operating less than all of the lighting elements simultaneously.

9. The apparatus as set forth in claim 8, wherein at least one of the electrical circuits contains dimming means for varying the voltage applied to the lighting elements interconnected with the at least one electrical circuit.

10. The apparatus as set forth in claim 1, further comprising a rotary support member connected to an end of each rigid strip, the rotary support member providing rotational movement of the rigid strip about the axis extending from the first end to the second end of the rigid strip.

11. The apparatus as set forth in claim 10, wherein the rotary support member includes an electrical actuator for automatically positioning an angle of rotation of the rigid strip.

12. The apparatus as set forth in claim 10, including a second rotary support member connected to the strip at the end opposite from the end connected to the first rotary support member.

13. The apparatus as set forth in claim 12, wherein at least one of the first and second rotary support members includes an electrically actuated servomotor.

14. The apparatus as set forth in claim 1, wherein the ratios of direct to indirect lighting can be varied.

15. The apparatus as set forth in claim 14, wherein the ratios of direct to indirect lighting are remotely controlled.

16. The apparatus as set forth in claim 1, wherein the two or more rigid strips are aligned in a single plane.

17. A lighting fixture apparatus comprising:

a frame portion, a louver portion detachably connected to the frame portion, the louver portion including a baffle system for passing unobstructed at least a portion of light impinging thereon; and

at least one directional lighting apparatus attached to and supported by the frame portion, the directional lighting apparatus being disposed above the louver portion,

the at least one directional lighting apparatus comprising;

a rigid strip having a first end and a second end opposite said first end and an axis extending from the first end to the second end, and having a first surface and a second surface opposite said first surface;

first surface and second surface extending from the first end to the second end;

a rotary support member connected to an end of the strip portion, the rotary support member providing rotational movement of the strip about the first axis; and

a plurality of electrical lighting elements mounted on the first surface configured in at least one electrical circuit.

18. The apparatus as set forth in claim 17, wherein the electrical lighting elements are light emitting diodes (LEDs).

19. The apparatus as set forth in claim 18, wherein the rigid strip is selected from one of the group consisting of:

(i) opaque material;

(ii) translucent material and (iii) transparent material.

20. The apparatus as set forth in claim 18, wherein the rotary support member includes an electrical actuator for automatically positioning the angle of rotation of the rigid strip.

21. The apparatus as set forth in claim 20, wherein the LEDs are arranged in a single row.

22. The apparatus as set forth in claim 20, wherein the LEDs are arranged in a plurality of rows.

23. The apparatus as set forth in claim 20, wherein the LEDs are arranged in an array.

24. The apparatus as set forth in claim 17, wherein the directional lighting apparatus is configured to operate at a nominal distribution voltage selected from the group consisting of:

110 V, 220V, 240V, 277V, 460V, 480V, 575V and 600V.

25. The apparatus as set forth in claim 17, wherein the at least one lighting element is operable to vary the percentage of a direct lighting component a total direct/indirect lighting output of the lighting fixture between approximately 0% to approximately 100% of the total direct/indirect lighting output of the lighting fixture.

26. The apparatus as set forth in claim 17, wherein the lighting fixture includes a plurality of lighting elements, and at least one lighting element is fixed in a non-rotatable position, and at least one other lighting element operable to vary the percentage of a direct lighting component of the lighting fixture.

27. The apparatus as set forth in claim 26, wherein the louver portion includes at least one reflecting surface for reflecting toward the ceiling at least a portion of light impinging on the louver portion.

28. The apparatus as set forth in claim 17, further including a diffuser lens, having a surface for diffusing light rays impinging thereupon;

and the directional lighting apparatus being disposed between the louver portion and the diffuser portion.