EXTENDED OPTICS LED BULB

• US 20130099665A1
• Filed: 12/20/2011
• Published: 04/25/2013
• Est. Priority Date: 12/20/2010
• Status: Active Grant

• Current Assignee: David F. Shaw, Leroy E. Anderson
• Original Assignee: David F. Shaw
• Inventors: Anderson, Leroy E., Shaw, David F.
• Granted Patent: US 8,587,200 B2
• Time in Patent Office: Days
• US Class Current: 315/51
• 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 29/767 the planes containing the fins or blades having directions perpendicular to 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 7/0091 using total internal reflection
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Disclosed is a light bulb which utilizes LEDs which replaces an incandescent light bulb in a fixture for incandescent light bulbs. The LED light bulb includes an optic which can be shaped to direct light to the side, and in different directions from the LED light source. Heat dissipation structures include a heat transfer column which extends from the LED to the base of the bulb, and fins which surround the optic or the support cone around the optic. A removable cover is enclosed which has openings for air circulation within the globe of the light bulb.

Claims

1. An LED light bulb for use with a socket for incandescent bulbs, comprising:

a bulb base, comprising a conductive socket with a first electrode at an apex of said socket, and a second electrode in electrical connection with a sidewall of said bulb base, with said electrodes configured to physically and electrically engage a standard light bulb socket configured for incandescent bulbs;

a globe base attached to said bulb base, said globe base configured for attachment of a globe, said globe serving to protect one or more LEDs from contact with foreign objects with said globe base having heat sink and heat transfer properties;

a control circuit including electronic components for powering and regulating electricity to an LED light;

at least one LED positioned inside said globe on said globe base, with said LED electrically connected to said first and second electrode by electrical connections, and configured to emit light when energized, with said LED in thermal contact with said bulb base, and said globe base;

an optic positioned over said LED, the optic comprising a lower portion with a generally conical outside profile, and an upper portion with a generally cylindrical outside profile, with said optic lower portion surrounded and supported by a support cone with a conical interior cavity, with an air space defined between said support cone and said optic lower portion;

said globe comprising air ventilation ports adjacent to said globe base, and at least one globe top air ventilation port, configured to permit air circulation of outside air into said globe interior, over said radiator heat sink fins, and out said globe top ventilation ports.

2. The LED light bulb of claim 1 which further comprises a plurality of radiator fins in contact with said support cone, said radiator fins extending from said support cone and in contact with said globe base.

3. The LED light bulb of claim 1 which further comprises a plurality of radiator fins in contact with said optic lower portion, said radiator fins extending from said support cone and in contact with said globe base.

4. The LED light bulb of claim 1 in which said optic further comprises an LED pocket defined in the tip of said optic lower portion.

5. The LED light bulb of claim 1 in which said bulb base and said globe base define a hollow core which surrounds a heat conductive/electricity non-conductive column, with said column having a base end and an LED end, said column in thermal contact with said LED light, and with said LED mounted on said LED end of said heat conductive column.

6. The LED light bulb of claim 1 which further comprises a generally cylindrical radiator section positioned between and attached to both said bulb base and said globe base, said radiator section with at least one generally circular radiator fin, said radiator section configured to surround said heat conductive column and to expel heat from said bulb.

7. The LED light bulb of claim 6 in which said heat conducting column is comprised of heat conductive and electricity non-conductive potting material, said potting material in thermal contact with said LED, said radiator heat sink, and said radiator section, for insulating said electrical connections from electricity, and for conducting heat from said LED to said radiator section.

8. The LED light bulb of claim 1 in which said globe is removable from said globe base.

9. The LED light bulb of claim 1 in which said control circuit is mounted on a circuit board positioned in said globe base.

10. The LED light bulb of claim 6 in which said radiator section is comprised of two of more adjacent radiator rings with radiator fins.

11. The LED based light bulb of claim 1, in which said electronic circuitry is configured to function as one or more devices selected from the list consisting of an engine, a converter, a transformer, and a capacitor.

12. The LED based light bulb of claim 1, in which said optic comprises a flattened skirt area and side reflecting surfaces, in addition to said upper portion with a generally cylindrical outside profile, with said optic defining an inner profile which is generally conical, for projecting a band of light in a 360 degree band around the sides of the globe, as well as a cone of light projecting out the top of the globe.

13. The LED based light bulb of claim 1, in which said globe base further comprises at least one air passage extending from outside the globe to the interior of the globe.

14. The LED based light bulb of claim 1, with said optic defining an inner profile in said optic upper portion, which is generally conical and forms a convex depression in said optic upper portion.

15. The LED light bulb of claim 1 in which said optic conical inner profile further comprises a flat region directly over said LED at the bottom of said conical inner profile.

16. The LED light bulb of claim 1 in which said optic conical inner profile further comprises a convex region directly over said LED at the bottom of said optic inner profile.

17. The LED based light bulb of claim 1, in which said optic comprises a flattened skirt area and side reflecting surfaces, in addition to said upper portion with a generally cylindrical outside profile, with said optic defining an inner profile which is generally conical, for projecting a band of light in a 360 degree band around the sides of the globe, as well as a cone of light projecting out the top of the globe.

18. An LED light bulb for use with a socket for incandescent bulbs, comprising:

a bulb base, comprising a conductive socket with a first electrode at an apex of said socket, and a second electrode in electrical connection with a sidewall of said bulb base, with said electrodes configured to physically and electrically engage a standard light bulb socket configured for incandescent bulbs;

a globe base attached to said bulb base, said globe base configured for attachment of a globe, said globe serving to protect one or more LEDs from contact with foreign objects with said globe base having heat sink and heat transfer properties;

a control circuit including electronic components for powering and regulating electricity to an LED light;

at least one LED positioned inside said globe on said globe base, with said LED electrically connected to said first and second electrode by electrical connections, and configured to emit light when energized, with said LED in thermal contact with said bulb base, and said globe base;

an optic positioned over said LED, the optic comprising a lower portion with a generally conical outside profile, and an optic upper portion with a generally cylindrical outside profile, said optic defining an inner profile in said optic upper portion, which is generally conical and forms a convex depression in said optic upper portion, with said optic lower portion surrounded and supported by a support cone with a conical interior cavity, with an air space defined between said support cone and said optic lower portion;

said globe comprising air ventilation ports adjacent to said globe base, and at least one globe top air ventilation port, configured to permit air circulation of outside air into said globe interior, over said radiator heat sink fins, and out said globe top ventilation ports.

19. The LED based light bulb of claim 18, in which said optic comprises a flattened skirt area and side reflecting surfaces, in addition to said upper portion with a generally cylindrical outside profile, with said optic defining an inner profile which is generally conical, for projecting a band of light in a 360 degree band around the sides of the globe, as well as a cone of light projecting out the top of the globe.