Luminaire having vented optical chamber and associated methods

• US 9,322,516 B2
• Filed: 11/07/2013
• Issued: 04/26/2016
• Est. Priority Date: 11/07/2012
• Status: Active Grant

• Current Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Boomgaarden, Mark Penley, Holland, Eric, LeClair, Rick
• Primary Examiner(s): Sember, Thomas M
• Application Number:
  US14/074,173
• Publication Number:
  US 20140133153A1
• Time in Patent Office: 901 Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2107/90 on two opposite sides of supports or substrates
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A luminaire may include an electrical base, an optic defining an optical chamber, an intermediate member that may be positioned between the electrical base and the optic, and a light source. The intermediate member may include a main body and a plurality of structural supports that may be connected to the main body which may be configured to carry an upper member. A plurality of voids may be positioned between the respective plurality of structural supports to position the optical chamber in optical communication with the environment surrounding the luminaire therethrough. The upper member may be configured to carry the optic and the light source may be electrically coupled to the electrical base and may be positioned within the optical chamber. The optic may be configured to redirect at least a portion of light incident thereupon in the direction of the plurality of voids.

Claims

1. A luminaire comprising:

an electrical base;

an optic defining an optical chamber;

an intermediate member positioned between the electrical base and the optic comprising;

a main body, and

a plurality of structural supports connected to the main body and configured to carry an upper member,

wherein a plurality of voids are positioned between the respective plurality of structural supports to position the optical chamber in optical communication with the environment surrounding the luminaire therethrough; and

a light source;

wherein the upper member is configured to carry the optic;

wherein the light source is electrically coupled to the electrical base and positioned within the optical chamber; and

wherein the optic is configured to redirect at least a portion of light incident thereupon in the direction of the plurality of voids.

2. The luminaire according to claim 1 further comprising a heat sink that is at least one of carried by and adjacent to the intermediate member.

3. The luminaire according to claim 2 wherein the plurality of voids is configured to position at least one of the optical chamber and the heat sink in fluid communication with the environment surrounding the luminaire.

4. The luminaire according to claim 1 wherein each of the plurality of voids is defined by a pair of the structural supports positioned adjacent to one another, the upper member, and an outer surface of the main body.

5. The luminaire according to claim 1 further comprising a controller to selectively operate the light source.

6. The luminaire according to claim 5 further comprising a light source board electrically coupled to at least one of the light source and the electrical base;

and wherein the light source board is configured to facilitate the operation of the light source by the controller.

7. The luminaire according to claim 6 wherein the light source board is carried by the intermediate member.

8. The luminaire according to claim 6 further comprising a power supply unit electrically coupled to at least one of the electrical base, the light source board, the controller, and the light source.

9. The luminaire according to claim 6 wherein the light source comprises a plurality of light sources;

wherein the light source board has a circular configuration; and

wherein the plurality of light sources are distributed about the light source board.

10. The luminaire according to claim 9 wherein the light source board is configured to extend beyond a periphery of the intermediate member;

wherein the light source board comprises an upper surface and a lower surface such that a region of the lower surface extends beyond the periphery of the intermediate member;

wherein the plurality of light sources comprises a first plurality of light sources and a second plurality of light sources;

wherein the first plurality of light sources are distributed about the upper surface of the light source board; and

wherein the second plurality of light sources are distributed about the lower surface of the light source board.

11. The luminaire according to claim 10 wherein the controller is adapted to independently operate each of the light sources in each of the first plurality of light sources and the second plurality of light sources.

12. The luminaire according to claim 1 wherein the optic comprises at least one of a conversion material, a refractive material, a reflective material, a silvered surface, a tinted surface, and a mirrored surface.

13. The luminaire according to claim 1 wherein the light source comprises at least one of a conversion material, a refractive material, and a tinted surface.

14. The luminaire according to claim 1 wherein the light emitted by the light source is within a wavelength range of at least one of about 10 nanometers to 380 nanometers, about 390 nanometers to 700 nanometers, and about 700 nanometers to 1 millimeter.

15. The luminaire according to claim 1 wherein a portion of the light emitted by the light source is at least one of reflected and refracted by the optic in a direction substantially below a generally horizontal plane defined by the upper member.

16. The luminaire according to claim 15 wherein at least a portion of the light emitted by the light source that is reflected or refracted by the optic is reflected or refracted in the direction of the void.

17. The luminaire according to claim 1 wherein the light source comprises a light emitting diode (LED).

18. The luminaire according to claim 1 further comprising an intermediate optic positioned adjacent to the light source and carried by the intermediate member;

and wherein the intermediate optic is configured to form a fluid seal between the light source and the optical chamber.

19. The luminaire according to claim 18 wherein the intermediate optic further comprises at least one of a conversion material and a tinted surface.

20. A luminaire comprising:

an electrical base;

an optic defining an optical chamber;

an intermediate member positioned between the electrical base and the optic comprising;

a main body, and

a plurality of structural supports connected to the main body and configured to carry an upper member;

wherein a plurality of voids are positioned between the respective plurality of structural supports to position the optical chamber in optical communication with the environment surrounding the luminaire therethrough;

a heat sink at least one of carried by and adjacent to the intermediate member;

a light source board;

a light source comprising a plurality of light sources distributed about the light source board; and

an intermediate optic positioned adjacent to the light source and carried by the intermediate member;

wherein the upper member is configured to carry the optic;

wherein the light source is electrically coupled to the electrical base and positioned within the optical chamber;

wherein the optic is configured to redirect at least a portion of light incident thereupon in the direction of the plurality of voids;

wherein each of the plurality of voids is defined by a pair of the structural supports positioned adjacent to one another, the upper member, and an outer surface of the main body; and

wherein the light source board is electrically coupled to at least one of the light source and the electrical base.

21. A luminaire comprising:

an electrical base;

an optic defining an optical chamber;

an intermediate member positioned between the electrical base and the optic comprising

a main body, and

a plurality of structural supports connected to the main body and configured to carry an upper member,

wherein a plurality of voids are positioned between the respective plurality of structural supports to position the optical chamber in optical communication with the environment surrounding the luminaire therethrough;

a light source board;

a light source comprising a plurality of light sources wherein the plurality of light sources comprises a first plurality of light sources and a second plurality of light sources; and

an intermediate optic positioned adjacent to the light source and carried by the intermediate member;

wherein the upper member is configured to carry the optic;

wherein the light source is electrically coupled to the electrical base and positioned within the optical chamber;

wherein at least one of the optic, the intermediate optic and the light source comprises a conversion material;

wherein the first plurality of light sources are generally distributed about an upper surface of the light source board;

wherein the second plurality of light sources are generally distributed about a lower surface of the light source board;

wherein the light emitted by the second plurality of light sources is emitted in a direction substantially below a horizontal plane defined by the upper member; and

wherein the optic is configured to redirect at least a portion of light incident thereupon in the direction of the plurality of voids.