LED Lighting Device

• US 20100187964A1
• Filed: 03/25/2010
• Published: 07/29/2010
• Est. Priority Date: 05/01/2008
• Status: Active Grant

• Current Assignee: Epistar Corporation
• Original Assignee: CAO Group, Inc.
• Inventors: Geng, Lijian, Malfitano, Jim, Thurgood, Stan
• Granted Patent: US 7,963,667 B2
• Time in Patent Office: Days
• US Class Current: 313/46
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 19/0015 Fastening arrangements intended to retain light sources
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21Y 2107/40 on the sides of polyhedrons, e.g. cubes or pyramids
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present invention is a light generation device utilizing higher efficiency LED'"'"'s while also allowing for interface with current lighting interfaces. The LED'"'"'s are replaceable in the unit and may be interchanged with other LED'"'"'s to affect lighting mood and style or simply for replacement in the event an LED ceases to function.

Claims

1. A lighting device having a plurality of replaceable LEDs, comprising:

a heat dissipating body having a first end and a second end spaced from the first end;

a screw-base interface configured for attachment to the first end of the heat dissipating body and further configured to attach to and receive electrical power from a standard Edison-type socket;

an electrically insulative member positioned between the screw-base and the first end of the heat dissipating body;

a cap member having an outer surface extending between a base region and a second region spaced from the base region, the base region being configured for attachment to the second end of the dissipative body, the cap member having a plurality of apertures spaced about the outer surface;

a plurality of inserts, one insert positioned within each aperture and configured to receive a socket base;

a plurality of socket bases, one socket base positioned within each insert; and

a plurality of LEDs, one LED removably threaded into each socket.

2. The lighting device of claim 1, further comprising a circuit board configured to receive alternating current from the screw-base and provide direct current to the plurality of LEDs.

3. The lighting device of claim 1, wherein the heat dissipating body comprises a cylindrical outer surface and a plurality of cooling fins spaced on the cylindrical outer surface.

4. The lighting device of claim 1, further comprising three sets of apertures, inserts, socket bases and LEDs grouped together and spaced equally about the outer surface of the cap member.

12. The lighting device of claim 1, wherein the cap member is removably attached to the heat dissipating body.

14. The lighting device of claim 1, wherein the outer surface of the cap member is cone-shaped, starting from the base region and tapering toward the second region.

5. A lighting device having a plurality of replaceable LEDs, comprising:

a heat dissipating body having a first end and a second end spaced from the first end;

a screw-base configured for attachment to the first end of the heat dissipating body and further configured to attach to and receive electrical power from an electric socket;

a cap member having an outer surface extending between a base region and a second region spaced from the base region, the base region being configured for attachment to the second end of the dissipative body, the cap member having a plurality of apertures spaced about the outer surface;

a plurality of inserts, one insert positioned within each aperture and configured to receive a socket base;

a plurality of socket bases, one socket base positioned within each insert; and

a plurality of LEDs, one LED removably positioned into each socket.

6. The lighting device of claim 5, further comprising an electrically insulative member positioned between the screw-base and the first end of the heat dissipating body.

7. The lighting device of claim 5, wherein each LED includes a threaded base sized and configured for threading attachment to a corresponding one of the plurality of socket bases.

8. The lighting device of claim 5, wherein each LED includes a threaded base sized and configured for being received through a corresponding one of the plurality of socket bases and wherein the lighting device further comprises a plurality of threaded nuts, each nut sized and configured for removable attachment to the threaded base of a corresponding one of the plurality of LEDs.

9. The lighting device of claim 5, wherein the heat dissipating body comprises a cylindrical outer surface and a plurality of cooling fins spaced on the cylindrical outer surface.

10. The lighting device of claim 9, further comprising three sets of apertures, inserts, socket bases and LEDs grouped together and spaced equally about the outer surface of the cap member.

11. The lighting device of claim 10, wherein the cap member includes three facets and wherein each set of apertures, inserts, socket bases and LEDs is positioned on a corresponding one of the facets.

13. The lighting device of claim 5, wherein the cap member is removably attached to the heat dissipating body.

15. The lighting device of claim 5, wherein the outer surface of the cap member is cone-shaped, starting from the base region and tapering toward the second region.

16. A lighting device having a plurality of replaceable LEDs, comprising:

a cylindrical shaped heat dissipating body having a first end and a second end spaced from the first end, the heat dissipating body having a plurality of cooling fins extending outwardly in radial direction between the first and second ends;

a screw-base interface attached to the first end of the heat dissipating body and configured to attach to and receive electrical power from a standard Edison-type socket;

an electrically insulative member positioned between the screw-base and the first end of the heat dissipating body;

a cap member having a conical shaped outer surface extending between a base region and a second region spaced from the base region, the base region being attached to the second end of the dissipative body, the cap member having a plurality of apertures spaced about the outer surface;

a plurality of inserts, one insert positioned within each aperture;

a plurality of socket bases, one socket base positioned within each insert;

a plurality of LEDs, one LED removably threaded into each socket; and

a circuit board positioned within the heat dissipating body and configured to receive alternating current from the screw-base and provide direct current to the plurality of LEDs.

17. The lighting device of claim 16, further comprising three sets of apertures, inserts, socket bases and LEDs grouped together and spaced equally about the outer surface of the cap member.

18. The lighting device of claim 17, wherein the cap member includes three facets and wherein each set of apertures, inserts, socket bases and LEDs is positioned on a corresponding one of the facets.