ILLUMINATION APPARATUS FOR CONDUCTING AND DISSIPATING HEAT FROM A LIGHT SOURCE

• US 20100027258A1
• Filed: 07/31/2008
• Published: 02/04/2010
• Est. Priority Date: 07/31/2008
• 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: Henderson, David, Sun, Wei, Maxik, Fredric S., Widjaja, Addy S.
• Granted Patent: US 7,922,356 B2
• Time in Patent Office: Days
• US Class Current: 362/240
• CPC Class Codes: F21V 29/78 with helically or spirally arranged fins or blades
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An illumination apparatus comprising an optics module wherein a driving circuit may be disposed within the proximal base portion of the optics module. The proximal base portion may further be releasably secured within an independent heat dissipating element. Such an apparatus may be very beneficial in light emitting diode (LED) applications due to its efficient conduction and dissipation of heat away from the LED semiconductor junction. Additionally, a releasable optics module comprising a plurality of LEDs and a driving circuit provides for cost efficient and environmentally friendly replacement of such a component at the end of its lifespan. The heat dissipating element (e.g. heat sink) may continue to be used, while only the optics module need be replaced or serviced as required. Precious environmental resources may thus be conserved and maintenance costs reduced while concurrently extending the lifespan of such an inventive illumination apparatus.

Claims

1. An illumination apparatus, said illumination apparatus comprising:

an optics module comprising;

a pendant body, wherein said pendant body comprises a proximal base portion and a distal projection element;

a plurality of light emitting diodes disposed on said projection element of said pendant body;

a lens cover disposed on said pendant body and encapsulating said plurality of light emitting diodes and said projection element;

a driving circuit disposed within said base portion of said pendant body, said base portion defining a cavity in which said driving circuit is disposed, wherein said driving circuit is in electrical communication with said plurality of light emitting diodes; and

a first electrical connector disposed on the proximal surface of said base portion, wherein said first electrical connector is in electrical communication with said driving circuit.

2. The illumination apparatus of claim 1, wherein said base portion further comprises a channel extending from the distal surface of said base portion to said proximal surface of said base portion through which said driving circuit is in electrical communication with said plurality of light emitting diodes.

3. The illumination apparatus of claim 1, wherein said first electrical connector is selected from the group consisting of a button style electrical connector, a leaf spring electrical connector, and a coil spring electrical connector.

4. The illumination apparatus of claim 1, wherein said projection element of said pendant body comprises a triangular cross section.

5. The illumination apparatus of claim 1, wherein said plurality of light emitting diodes comprises three independent planar light emitting diode modules disposed on said projection element of said pendant body.

6. The illumination apparatus of claim 1, wherein said optics module further comprises:

a first contact board disposed on said proximal surface of said base portion, whereon said first electrical connector is disposed on said first contact board.

7. The illumination apparatus of claim 6, wherein said optics module further comprises:

at least one fastener for securing said first contact board to said proximal surface of said base portion of said pendant body.

8. The illumination apparatus of claim 1, further comprising:

a heat dissipating element comprising a releasable connection to said base portion of said pendant body, wherein said heat dissipating element is reusable and said releasable connection allows for service or replacement of said optics module independent from said heat dissipating element.

9. The illumination apparatus of claim 8, wherein said releasable connection is selected from the group consisting of a threaded connection, a friction fit connection, and a post and groove connection between said heat dissipating element and said base portion of said pendant body.

10. The illumination apparatus of claim 8, wherein said heat dissipating element comprises a plurality of radially projecting fins.

11. The illumination apparatus of claim 8, wherein said heat dissipating element further comprises a second contact board having a second electrical connector disposed on said second contact board, wherein when said releasable connection is established said second electrical connector of said heat dissipating element is in physical and electrical communication with said first electrical connector of said optics module.

12. The illumination apparatus of claim 11, wherein said second electrical connector is selected from the group consisting of a button style electrical connector, a leaf spring electrical connector, and a coil spring electrical connector.

13. The illumination apparatus of claim 11, wherein said second contact board is attached to said heat dissipating element via at least one fixation element.

14. The illumination apparatus of claim 13, wherein said at least one fixation element is selected from the group consisting of at least one tab, at least one screw, at least one rivet, a threaded periphery, adhesive, and bonding.

15. An illumination apparatus, said illumination apparatus comprising:

an optics module comprising;

a pendant body, wherein said pendant body comprises a proximal base portion and a distal projection element;

a plurality of light emitting diodes disposed on said projection element of said pendant body;

a lens cover disposed on said pendant body and encapsulating said plurality of light emitting diodes and said projection element;

a driving circuit disposed within said base portion of said pendant body, said base portion defining a cavity in which said driving circuit is disposed, wherein said driving circuit is in electrical communication with said plurality of light emitting diodes; and

a first electrical connector disposed on the proximal surface of said base portion, wherein said first electrical connector is in electrical communication with said driving circuit;

wherein said base portion further comprises a channel extending from the distal surface of said base portion to said proximal surface of said base portion through which said driving circuit is in electrical communication with said plurality of light emitting diodes; and

a heat dissipating element comprising;

a releasable connection to said base portion of said pendant body, wherein said heat dissipating element is reusable and said releasable connection allows for service or replacement of said optics module independent from said heat dissipating element; and

a second contact board having a second electrical connector disposed on said second contact board, wherein when said releasable connection is established said second electrical connector of said heat dissipating element is in physical and electrical communication with said first electrical connector of said optics module.

16. The illumination apparatus of claim 15, wherein said first electrical connector and said second electrical connector are independently selected from the group consisting of a button style electrical connector, a leaf spring electrical connector, and a coil spring electrical connector.

17. The illumination apparatus of claim 15, wherein said second contact board is attached to said heat dissipating element via at least one fixation element.

18. The illumination apparatus of claim 15, wherein said optics module further comprises:

a first contact board disposed on said proximal surface of said base portion upon which said first electrical connector is disposed.

19. The illumination apparatus of claim 15, wherein said releasable connection is selected from the group consisting of a threaded connection, a friction fit connection, and a post and groove connection between said heat dissipating element and said base portion of said pendant body.

20. An illumination apparatus, said illumination apparatus comprising:

an optics module comprising;

a pendant body, wherein said pendant body comprises a proximal base portion and a distal projection element;

a plurality of light emitting diodes disposed on said projection element of said pendant body;

a lens cover disposed on said pendant body and encapsulating said plurality of light emitting diodes and said projection element;

a driving circuit disposed within said base portion of said pendant body, said base portion defining a cavity in which said driving circuit is disposed, wherein said driving circuit is in electrical communication with said plurality of light emitting diodes; and

a first electrical connector disposed on the proximal surface of said base portion, wherein said first electrical connector is in electrical communication with said driving circuit;

wherein said base portion further comprises a channel extending from the distal surface of said base portion to said proximal surface of said base portion through which said driving circuit is in electrical communication with said plurality of light emitting diodes; and

a heat dissipating element comprising;

a releasable connection to said base portion of said pendant body, wherein said heat dissipating element is reusable and said releasable connection allows for service or replacement of said optics module independent from said heat dissipating element, wherein said releasable connection is selected from the group consisting of a threaded connection, a friction fit connection, and a post and groove connection between said heat dissipating element and said base portion of said pendant body; and

a second contact board having a second electrical connector disposed on said second contact board, wherein said second contact board is attached to said heat dissipating element via at least one fixation element and when said releasable connection is established said second electrical connector of said heat dissipating element is in physical and electrical communication with said first electrical connector of said optics module;

wherein said first electrical connector and said second electrical connector are independently selected from the group consisting of a button style electrical connector, a leaf spring electrical connector, and a coil spring electrical connector.