LED array lighting assembly

• US 9,052,417 B2
• Filed: 04/07/2012
• Issued: 06/09/2015
• Est. Priority Date: 04/08/2011
• Status: Active Grant

• Current Assignee: Brite Shot, Inc.
• Original Assignee: Brite Shot, Inc.
• Inventors: Ticktin, Peter
• Primary Examiner(s): GRAMLING, SEAN P
• Application Number:
  US13/820,695
• Publication Number:
  US 20130163273A1
• Time in Patent Office: 1,158 Days
• Field of Search: 362/147, 362/373, 362/404, 362/148, 362/364
• 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 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 23/007 enclosed in a casing
• CPC Class Codes: F21V 29/673 the fans being used for intake
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• 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: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2107/10 on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0005 the light guides being of the fibre type G02B6/0003 takes precedence
• CPC Class Codes: G02B 6/0008 the light being emitted at the end of the fibre
• CPC Class Codes: G02B 6/04 formed by bundles of fibres G02B6/24 takes precedence

Abstract

A lighting assembly including a plurality of LED light sources and a light-guide assembly with a plurality of light guides each having a proximal end terminating in a recess and a distal end, a mating cap coupled to the proximal end of the plurality of light guides and aligning each recess with a corresponding LED light source in the plurality of LED light sources, and a light-emitting lens with a receiving surface coupled to the distal end of each of the plurality of light guides and able to transfer light emitted from the distal end of each of the plurality of light guides into the light-emitting lens and a curved light-emitting surface opposite the receiving surface, the light-emitting surface able to emit light from within the light-emitting lens, the light within the light emitting lens being a blend of light emitted from two of the plurality of light guides.

Claims

1. A self-cooled lighting assembly comprising:

a ceiling with a standard-sized light bulb recess therein, the light bulb recess having a standard light-bulb outlet therein and a maximum opening dimension limiting the dimension of objects insertable within the light bulb recess; and

a light fixture including;

a light-source power receiving portion dimensioned to fit within the light bulb recess and couplable to the standard light-bulb outlet;

a sidewall having a dimension exceeding the maximum opening dimension of the light bulb recess;

a light-source-supporting substrate within the sidewall and having a front surface and a back surface and defining an aperture between the front surface and the back surface;

a light-source supported by the substrate, adjacent the aperture, and operable to emit light from the front surface of the substrate; and

a heat-dissipating engine coupled to the back surface of the substrate and in fluid communication with the aperture, the heat-dissipating engine defining an air-flow channel from the aperture, across a portion of the light-source, and out of an exhaust port in the sidewall higher in altitude than the aperture, the heat-dissipating engine driving a substantially continuous flow of air from the aperture, across a portion of the light-source, and out of the exhaust port without the use of a fan.

2. The self-cooled lighting assembly according to claim 1, wherein the light source further comprises:

a light-emitting front face visible from the front surface of the substrate; and

a light-source driving circuit coupled to the back surface of the substrate and extending at least partially within the air-flow channel.

3. The self-cooled lighting assembly according to claim 2, wherein:

the light-source driving circuit includes a heat sink extending at least partially within the air-flow channel.

4. The self-cooled lighting assembly according to claim 1, wherein:

the light-source is a plurality of light-sources; and

the aperture is a plurality of apertures, wherein each of the plurality of apertures is adjacent one of the plurality of light-sources.

5. The self-cooled lighting assembly according to claim 1, wherein:

the exhaust port is a plurality of exhaust ports.

6. The self-cooled lighting assembly according to claim 1, further comprising:

a shaft electrically coupling the light-source power receiving portion to the standard light-bulb outlet for supplying power to the light-source, the light-source being translatable on the shaft relative to the electrical receptacle.

7. The self-cooled lighting assembly according to claim 6, further comprising:

a lever mechanically coupled to the shaft and operable to selectively allow the light-source to translate on the shaft relative to the electrical receptacle.

8. The self-cooled lighting assembly according to claim 1, wherein:

the exhaust port in the sidewall is located outside of the light bulb recess and directs air away from the light bulb recess.

9. The self-cooled lighting assembly according to claim 1, wherein:

the standard-sized light bulb recess is a can in a ceiling, the can sized and shaped to receive substantially all of a standard-sized light bulb.

10. A flush mounted self-cooled ceiling lighting assembly comprising:

a light assembly dimensioned and shaped not to completely fit within a standard-sized light bulb recess in a ceiling, the standard-sized light bulb recess being of a size and shape to receive substantially all of a standard-sized light bulb therein, the light assembly having a light-emitting face and an electrical contact portion;

an airflow chamber shaped to be in contact with a ceiling and having a side wall;

with an upper end dimension that exceeds the largest dimension of the standard sized light bulb recess in the ceiling;

with a lower end that defines an aperture for passing light emitted from the light source;

defining at least one proximal opening; and

defining at least one distal opening in fluid communication with the proximal opening, wherein heat created by the light assembly drives a substantially continuous flow of air from the proximal opening, across a portion of the light assembly, and out of the distal opening without the use of a fan.

11. The flush mounted self-cooled ceiling lighting assembly according to claim 10, wherein the airflow chamber further comprises:

a light-bulb electrical receptacle shaped to receive the electrical contact portion of the light assembly; and

a contact portion electrically couplable with a standard light-bulb outlet.

12. The flush mounted self-cooled ceiling lighting assembly according to claim 11, further comprising:

a shaft separating the light-bulb electrical receptacle from the contact portion.

13. The flush mounted self-cooled lighting assembly according to claim 12, further comprising:

a lever mechanically coupled to the shaft and operable to selectively allow the airflow chamber to translate on the shaft relative to the light-bulb electrical receptacle.

14. The flush mounted self-cooled lighting assembly according to claim 10, wherein:

the at least one distal opening is aligned to emit the substantially continuous flow of air from the proximal opening away from the recess in the ceiling.