LED LIGHTING FIXTURE

• US 20100214780A1
• Filed: 02/22/2010
• Published: 08/26/2010
• Est. Priority Date: 09/12/2006
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Villard, Russell George
• Granted Patent: US 8,118,450 B2
• Time in Patent Office: Days
• US Class Current: 362/249.20
• CPC Class Codes: F21K 9/65 specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
• CPC Class Codes: F21K 9/90 Methods of manufacture
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21S 8/08 with a standard F21S6/00 takes precedence
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21V 19/02 with provision for adjustment, e.g. for focusing
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2107/50 on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.

Abstract

A light emitting diode (LED) lighting fixture for achieving a desired illumination pattern includes a support plate and a plurality of panels Connected to the support plate. Each panel has an array of LEDs mounted to a planar surface thereof, and each of the panels is rotatable in at least two dimensions.

Claims

1. A LED lighting fixture, comprising:

a support plate having a first surface and a second surface;

a plurality of panels connected to the first surface, each panel having at least one LED mounted to and extending from a planar surface thereof; and

at least one of the panels being fixable at a first angle from a vertical plane bisecting the support plate and at a second angle from a horizontal plane bisecting the support plate to create a desired illumination pattern.

2. The fixture of claim 1, wherein the first and second angles of each respective panel that are angled from the vertical plane or horizontal plane bisecting the support plate are selected for the fixture to provide at least about 90% of a total light output in a desired direction.

3. The fixture of claim 1, wherein the first and second angles of each respective panel that are angled from the vertical plane or horizontal plane bisecting the support plate are selected so as to produce any of IESNA-specified Type I, Type II, Type III and Type IV roadway illumination patterns.

4. The fixture of claim 1, wherein the at least one LED on each panel comprises an array of LEDs.

5. The fixture of claim 4, wherein the panels with LED arrays thereon are configured to provide a total light output of at least about 8000 lumens.

6. The fixture of claim 4, wherein the panels with LED arrays thereon are configured to provide a total light output of between about 6,000 and about 9,000 lumens.

7. The fixture of claim 4, wherein the panels with LED arrays thereon are configured to provide a light output of at least about 8000 lumens in the desired direction.

8. The fixture of claim 4, wherein the panels with LED arrays thereon are configured to provide a light output of at least about 6000 lumens in the desired direction.

9. The fixture of claim 4, wherein one or more LEDs is fitted with a secondary optic thereon.

10. The fixture of claim 4, wherein each array of LEDs on a given panel comprises a plurality of strips of LEDs.

11. The fixture of claim 10, wherein one or more LEDs on at least one of the LED strips is fitted with a secondary optic thereon.

12. The fixture of claim 1, wherein the plurality of panels comprise front panels and rear panels, the front and rear panels being individually adjustable to create the desired illumination pattern.

13. The fixture of claim 12, wherein the at least one LED on the front panels are fitted with a secondary optic and the at least one LED on the rear panels have no optics.

14. The fixture of claim 13, wherein

the front panels with the at least one LED fitted with the secondary optic are oriented so as to satisfy an IESNA specification for width and length of the desired illumination pattern, and

the at least one LED on the rear panels fill in the illumination pattern towards the center of the pattern.

15. The fixture of claim 12, wherein each of the plurality of panels are set at a first angle along a vertical plane bisecting the support plate and a second angle along a lateral plane extending from a side of the support plate to a front of the support plate so as to produce any of IESNA-specified Type I, Type II, Type III and Type IV roadway illumination patterns.

16. The fixture of claim 1, further comprising:

a hinge mount assembly attaching each panel to the support plate, the hinge mount assembly enabling a given panel to be rotated in at least two dimensions.

17. The fixture of claim 1, wherein the at least one LED on each panel comprises an array of LEDs and the panels with LED arrays thereon are configured to provide a total light output of at least 8000 lumens.

18. A LED lighting fixture, comprising:

a support plate having a first surface and a second surface;

a plurality of panels connected to the first surface, each panel having at least one LED mounted to and extending from a planar surface thereof; and

each of the panels being fixable at a first angle from a vertical plane bisecting the support plate and at a second angle from a horizontal plane bisecting the support plate to create a desired illumination pattern with at least about 90% of a total light output in a desired direction.

19. The fixture of claim 18, wherein the first and second angles of each respective panel that are angled from the vertical plane or horizontal plane bisecting the support plate are selected so as to produce any of IESNA-specified Type I, Type II, Type III and Type IV roadway illumination patterns.

20. The fixture of claim 18, wherein the at least one LED on each panel comprises an array of LEDs.

21. The fixture of claim 20, wherein the panels with LED arrays thereon are configured to provide a total light output of at least about 8000 lumens.

22. The fixture of claim 20, wherein one or more LEDs is fitted with a secondary optic thereon.