Light including a heat sink and LEDs coupled to the heat sink

• US 10,386,057 B2
• Filed: 08/07/2018
• Issued: 08/20/2019
• Est. Priority Date: 02/04/2015
• Status: Active Grant

• Current Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Original Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Inventors: Harvey, Kyle, McIntyre, Ross, Proeber, David, Isaacs, Jason, Schermerhorn, Joshua, Cornell, Brian
• Primary Examiner(s): Ly, Toan C
• Application Number:
  US16/056,602
• Publication Number:
  US 20180340683A1
• Time in Patent Office: 378 Days
• Field of Search: 362190
• CPC Class Codes: F21L 14/00 Electric lighting devices without a self-contained power source, e.g. for mains connection
• CPC Class Codes: F21L 4/00 Electric lighting devices with self-contained electric batteries or cells
• CPC Class Codes: F21L 4/08 characterised by means for in situ recharging of the batteries or cells
• CPC Class Codes: F21S 9/02 the power supply being a battery or accumulator
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 23/0435 activated by remote control means
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/78 with helically or spirally arranged fins or blades
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light includes a housing having an upper portion and a lower portion. The lower portion defines a battery port. The light also includes a heat sink extending upward from the lower portion. The heat sink includes a body defining a central aperture that extends along a central axis, a plurality of light support surfaces arranged around a perimeter of the body, and a top support member attached to tops of the plurality of light support surfaces. The light further includes a first plurality of LEDs coupled to the plurality of light support surfaces to emit light in a 360 degree pattern, a second plurality of LEDs supported on a surface of the top support member that is perpendicular to the plurality of light support surfaces, and a battery pack received in the battery port to power the first plurality of LEDs and the second plurality of LEDs.

Claims

1. A light comprising:

a housing having a bottom, a top, and a central axis extending through the bottom and the top, the housing including an upper portion and a lower portion, the lower portion defining a battery port;

a heat sink extending upward from the lower portion of the housing, the heat sink including a body defining a central aperture that extends along the central axis, a plurality of light support surfaces arranged around a perimeter of the body, and a top support member attached to tops of the plurality of light support surfaces;

a first plurality of LEDs coupled to the plurality of light support surfaces, the first plurality of LEDs arranged to emit light in a 360 degree pattern;

a second plurality of LEDs supported on a surface of the top support member that is perpendicular to the plurality of light support surfaces; and

a battery pack received in the battery port to power the first plurality of LEDs and the second plurality of LEDs.

2. The light of claim 1, wherein the first plurality of LEDs is supported on a plurality of circuit boards attached to the plurality of light support surfaces.

3. The light of claim 1, wherein the second plurality of LEDs is arranged to emit light upward in a direction substantially parallel to the central axis.

4. The light of claim 1, wherein the heat sink further includes a plurality of fins extending toward the central aperture that increase a surface area of the heat sink.

5. The light of claim 1, further comprising a power input supported on the lower portion of the housing, the power input configured to connect to an external AC power source to power the first plurality of LEDs and the second plurality of LEDs.

6. The light of claim 5, further comprising a charging circuit positioned within the housing and electrically coupled to the power input, the charging circuit operable to charge the battery pack.

7. The light of claim 1, further comprising a cover coupled to the housing to provide selective access to the battery port.

8. A light comprising:

a housing having a bottom, a top, and a central axis extending through the bottom and the top, the housing including an upper portion and a lower portion, the lower portion defining a battery port;

a heat sink extending upward from the lower portion of the housing, the heat sink including a top support member attached to a plurality of light support surfaces;

a first plurality of LEDs coupled to the plurality of light support surfaces, the first plurality of LEDs arranged to emit light in a 360 degree pattern;

a second plurality of LEDs supported on a surface of the top support member that is perpendicular to the plurality of light support surfaces; and

a battery pack received in the battery port to power the first plurality of LEDs and the second plurality of LEDs,

wherein operation of the first plurality of LEDs and the second plurality of LEDs is remotely controlled using a wireless communication scheme.

9. The light of claim 8, further comprising a control panel supported by the lower portion of the housing, wherein the control panel includes an indicator operable to notify a user when the wireless communication scheme is being used to control the light.

10. The light of claim 9, wherein the control panel also includes a power button and a light intensity control.

11. The light of claim 8, wherein the wireless communication scheme is operable to change intensities of the first plurality of LEDs and the second plurality of LEDs.

12. The light of claim 8, wherein the heat sink also includes a body defining a central aperture that extends along the central axis, and wherein the plurality of light support surfaces is arranged around a perimeter of the body.

13. The light of claim 8, further comprising a power input supported on the lower portion of the housing, the power input configured to connect to an external AC power source to power the first plurality of LEDs and the second plurality of LEDs.

14. The light of claim 8, wherein the upper portion of the housing encloses the heat sink, the first plurality of LEDs, and the second plurality of LEDs and operates as a lens.

15. A light comprising:

a housing having a bottom, a top, and a central axis extending through the bottom and the top, the housing including an upper portion and a lower portion, the lower portion defining a battery port;

a heat sink extending upward from the lower portion of the housing, the heat sink including a top support member attached to a plurality of light support surfaces;

a first plurality of LEDs coupled to the plurality of light support surfaces, the first plurality of LEDs arranged to emit light in a 360 degree pattern;

a second plurality of LEDs supported on a surface of the top support member that is perpendicular to the plurality of light support surfaces;

a battery pack received in the battery port to power the first plurality of LEDs and the second plurality of LEDs; and

a control panel supported by the lower portion of the housing, the control panel including a power control and an intensity control, the intensity control operable to change intensities of the first plurality of LEDs and the second pluralities of LEDs.

16. The light of claim 15, wherein the control panel further includes a light intensity indicator.

17. The light of claim 15, further comprising a power input supported on the lower portion of the housing, the power input configured to connect to an external AC power source to power the first plurality of LEDs and the second plurality of LEDs.

18. The light of claim 17, wherein the control panel further includes an indicator operable to indicate when the light is using DC power from the battery pack and when the light is using AC power from the external AC power source.

19. The light of claim 15, wherein the heat sink also includes a body defining a central aperture that extends along the central axis, and wherein the plurality of light support surfaces is arranged around a perimeter of the body.

20. The light of claim 15, wherein the upper portion of the housing encloses the heat sink, the first plurality of LEDs, and the second plurality of LEDs and operates as a lens.