LED light bulb

• US 9,810,419 B1
• Filed: 02/09/2016
• Issued: 11/07/2017
• Est. Priority Date: 12/03/2010
• Status: Expired due to Fees

• Current Assignee: Gary K. Mart, Jeffrey Newman
• Original Assignee: Gary K. Mart
• Inventors: Mart, Gary K., Newman, Jeffrey
• Primary Examiner(s): Payne, Sharon
• Application Number:
  US15/019,249
• Time in Patent Office: 637 Days
• Field of Search: None
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21K 9/65 specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
• CPC Class Codes: F21V 23/003 the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 23/0464 the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
• CPC Class Codes: F21V 23/0471 the sensor detecting the proximity, the presence or the movement of an object or a person
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/677 the fans being used for discharging
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light emitting diode-based bulb that includes a bracket and a housing translatably coupled with the bracket. The housing includes at least one light emitting diode (LED) unit disposed on a front face of the housing arranged to generate light in a direction away from the front face of the housing and a rear face of the housing with a heat sink thermally integrated into the housing. The heat sink including at least one heat dissipating member extending outwardly from the rear face of the housing to dissipate heat generated by the at least one light emitting diode (LED) unit. A fan is attached to the rear face of the housing, where the fan generates airflow that removes the heat generated by the least one light emitting diode unit.

Claims

1. A light emitting diode-based bulb comprising:

a bracket;

a housing translatably coupled with the bracket, the housing having;

at least one light emitting diode (LED) unit disposed on a front face of the housing arranged to generate light in a direction away from the front face of the housing; and

a rear face of the housing with a heat sink thermally integrated into the housing,

the heat sink including at least one heat dissipating member extending outwardly from the rear face of the housing to dissipate heat generated by the at least one light emitting diode (LED) unit; and

a fan attached to the rear face of the housing, the fan operably configured to generate airflow that removes the heat generated by the least one light emitting diode unit.

2. The light emitting diode-based bulb of claim 1, wherein the light emitting diode and the fan are connected to a driver via a single electrical connection.

3. The light emitting diode-based bulb of claim 1, wherein the at least one heat dissipating member comprises one or more vanes arranged for thermal transfer away from the light emitting diode.

4. The light emitting diode-based bulb of claim 1, wherein the housing is at least one of slidably coupled and rotatably coupled with the bracket.

5. The light emitting diode-based bulb of claim 1, wherein the bracket is U-shaped.

6. The light emitting diode-based bulb of claim 1, wherein the bracket further comprises:

a connector coupled to the bracket and electrically connected to the at least one light emitting diode unit and the fan, wherein the connector is a male screw base that supports the bracket and housing when screwed into a female electrical socket.

7. The light emitting diode-based bulb of claim 1, wherein the at least one heat dissipating member is of a set of vanes extending longitudinally along the housing of the rear face.

8. The light emitting diode-based bulb of claim 1, wherein the at least one heat dissipating member is of a metallic material.

21. The light emitting diode-based bulb of claim 1, wherein the fan is operably configured to generate airflow that removes the heat generated by the least one light emitting diode unit in a direction approximately parallel to the direction of the light generated by the at least one light emitting diode unit and is approximately orthogonal to a linear direction in which the bracket is coupled to a female receiving socket.

9. A method of servicing a light-emitting diode-based bulb comprising:

decoupling a bracket and a housing of the bulb, wherein the bracket comprises a connector that is a male screw base;

electrically disconnecting the decoupled bracket and housing;

electrically connecting a new housing and the bracket; and

coupling the new housing to the bracket, wherein the new housing is translatably coupled to the bracket, wherein the new housing includes;

at least one light emitting diode (LED) unit disposed on a front face of the housing arranged to generate light in a direction away from the front face of the housing;

a rear face of the housing with a heat sink thermally integrated into the housing,

the heat sink including at least one heat dissipating member extending outwardly from the rear face of the housing to dissipate heat generated by the at least one light emitting diode (LED) unit; and

a fan attached to the rear face of the housing, the fan operably configured to generate airflow that removes the heat generated by the least one light emitting diode unit.

10. The method according to claim 9, wherein the fan is electrically connected to a connector coupled to the bracket, wherein the connector is a male screw base, which supports the bracket and housing when screwed into a female electrical socket, which provides power to the at least one light emitting diode (LED) unit.

22. The method according to claim 9, wherein a direction of the airflow generated by the fan is approximately parallel to the direction of the light generated by the at least one light emitting diode unit and is approximately orthogonal to a linear direction in which the connector was screwed into an existing receiving socket.

11. A light emitting diode-based bulb comprising:

a bracket with a connector, which is a male screw base, arranged to be connected in an existing light fixture, and which supports the bracket when screwed into a female electrical socket;

a housing coupled to the bracket and having;

at least one light emitting diode (LED) unit disposed on a front face of the housing arranged to generate light in a direction away from the front face of the housing; and

a rear face of the housing comprising a set of vanes extending longitudinally along the housing on the rear face, wherein the set of vanes are part of a heat sink thermally integrated into the housing, wherein the vanes dissipate heat generated by the at least one light emitting diode (LED) unit; and

a fan attached to the rear face of the housing, the fan operably configured to generate airflow that removes the heat generated by the least one light emitting diode unit in a direction away from the housing.

12. The light emitting diode-based bulb of claim 11, wherein the housing is removably physically connected with the bracket.

13. The light emitting diode-based bulb of claim 11, wherein the housing is orientable in different directions after insertion of the light emitting diode-based bulb in a light fixture.

14. The light emitting diode-based bulb of claim 11, wherein the housing is at least one of slidably physically connected and rotatably physically connected with the bracket.

15. The light emitting diode-based bulb of claim 11, wherein the housing further comprises:

a controller coupled with the light emitting diode and arranged to control operation of the light emitting diode unit.

16. The light emitting diode-based bulb of claim 15, wherein the controller comprises one or more sequences of instructions for execution by the controller and which, when executed by the controller, cause the controller to control illumination output generated by the light emitting diode unit.

17. The light emitting diode-based bulb of claim 15, wherein the light emitting diode-based bulb further comprises a sensor communicatively coupled with the controller.

18. The light emitting diode-based bulb of claim 17, wherein the sensor comprises at least one of a motion sensor, a temperature sensor, a light sensor, or a voltage sensor.

19. The light emitting diode-based bulb of claim 18, wherein the controller further comprises

a sequence of instructions for causing the controller to reduce an output illumination of the light emitting diode unit responsive to the sensor detecting a temperature exceeding a predetermined threshold value.

20. The light emitting diode-based bulb of claim 18, wherein the controller further comprises a sequence of instructions for causing the controller to terminate an output illumination of the light emitting diode unit responsive to a lack of input received from at least one of the motion and light sensor.

23. The light emitting diode-based bulb of claim 11, wherein:

the fan operably configured to generate airflow that removes the heat generated by the least one light emitting diode unit in a direction approximately parallel to the direction of the light generated by the at least one light emitting diode unit and is approximately orthogonal to a linear direction in which the bracket was screwed into the female electrical socket.

24. In combination with an electric fixture having a receptacle disposed therein for an existing light bulb, wherein an improvement comprises:

a light emitting diode-based bulb for replacing the existing light bulb comprising;

a bracket located within the electric fixture;

a housing coupled with the bracket, the housing having;

at least one light emitting diode (LED) unit disposed on a front face of the housing arranged to generate light in a direction away from the front face of the housing; and

a rear face of the housing with a heat sink thermally integrated into the housing,

the heat sink including at least one heat dissipating member extending outwardly from the rear face of the housing to dissipate heat generated by the at least one light emitting diode (LED) unit; and

a fan attached to the rear face of the housing, the fan operably configured to generate airflow that removes the heat generated by the least one light emitting diode unit, wherein a direction of the airflow generated by the fan is approximately parallel to the direction of the light generated by the at least one light emitting diode unit and is approximately orthogonal to a linear direction in which the existing light bulb is screwed into the receptacle.

25. A method of servicing a light-emitting diode-based bulb comprising:

removing an existing light bulb from a receptacle disposed in a horizontal orientation within an electric fixture; and

replacing the existing light bulb with a new light emitting diode (LED) bulb having;

a bracket;

a housing coupled with the bracket, the housing including;

at least one LED unit disposed on a front face of the housing arranged to generate light in a direction away from the front face of the housing; and

a rear face of the housing with a heat sink thermally integrated into the housing, the heat sink including at least one heat dissipating member extending outwardly from the rear face of the housing to dissipate heat generated by the at least one LED unit; and

a fan attached to the rear face of the housing; and

installing the new LED bulb within the electric fixture such that the fan generates airflow removing heat generated by the least one LED unit in a direction that is approximately parallel to the direction of the light generated by the at least one light emitting diode unit and approximately orthogonal to the horizontal orientation of the receptacle for the existing light bulb.