Light

Patent metadata

Field	Value
Publication number	US-2016223185-A1
Application number	US-201615015794-A
Country	US
Kind code	A1
Filing date	Feb 4, 2016
Priority date	Feb 4, 2015
Publication date	Aug 4, 2016
Grant date	—

Abstract

A light includes a housing defining a bottom end and a top end, a heat sink disposed within the housing and including a central body that defines a central aperture, and a plurality of arms coupled to the central body and extending outward from the central body, each of the arms including a light receiving surface. A plurality of LEDs is coupled to each of the light receiving surfaces and a hollow tube extends from the bottom of the housing and is coupled to the heat sink to define a cooling air passage that passes through the hollow tube and the central aperture to direct cooling air from the bottom of the housing to the top of the housing.

First claim

What is claimed is:

1 . A light comprising:
a housing defining a bottom end and a top end; a heat sink disposed within the housing and including a central body that defines a central aperture; a plurality of arms coupled to the central body and extending outward from the central body, each of the arms including a light receiving surface; a plurality of LEDs coupled to each of the light receiving surfaces; and a hollow tube extending from the bottom of the housing and coupled to the heat sink to define a cooling air passage that passes through the hollow tube and the central aperture to direct cooling air from the bottom of the housing to the top of the housing.

2 . The light of claim 1 , wherein the housing defines a pair of power tool battery pack receiving slots each arranged to receive a power tool battery pack.

3 . The light of claim 2 , wherein the housing defines an external power source connection arranged to receive an AC power supply from an external power source.

4 . The light of claim 3 , further comprising a power control circuit operable to detect the level of charge in each of the power tool battery packs and to deliver power to the LEDs sequentially from the battery packs beginning with the battery pack having the lowest state of charge.

5 . The light of claim 1 , wherein each of the plurality of arms includes a plurality of fins that each extend from the light receiving surface toward the central aperture.

6 . The light of claim 1 , wherein the heat sink defines a plurality of external apertures extending parallel to the central axis.

7 . The light of claim 1 , further comprising a control panel coupled to the housing and operable to display at least two of an intensity of the emitted light, a current power source used to deliver power to the LEDs, a battery charge indication, and a light operating mode indication.

8 . The light of claim 1 , further comprising a receiver operable to receive signals from a source separate from the light, the signals operable to control the operation of the LEDs.

9 . A light comprising:
a housing; a heat sink disposed within the housing; a plurality of LEDs coupled to the heat sink and operable in response to a supply of power; a first power supply including two power tool battery packs selectively coupled to the housing; a second power supply arranged to receive AC power from an external source; and a power control circuit operable to detect the level of charge in each of the power tool battery packs and to deliver power to the LEDs sequentially from the battery packs beginning with the battery pack having the lowest state of charge.

10 . The light of claim 9 , wherein the housing defines a pair of power tool battery pack receiving slots each arranged to receive one of the power tool battery packs.

11 . The light of claim 9 , wherein the heat sink defines a central aperture and includes a plurality of arms that extend outward from the central aperture and define a light receiving surface.

12 . The light of claim 11 , wherein each of the plurality of arms includes a plurality of fins that each extend from the light receiving surface toward the central aperture.

13 . The light of claim 11 , wherein the heat sink defines a plurality of external apertures extending parallel to the central axis.

14 . The light of claim 9 , further comprising a control panel coupled to the housing and operable to display at least two of an intensity of the emitted light, a current power source used to deliver power to the LEDs, a battery charge indication, and a light operating mode indication.

15 . The light of claim 9 , further comprising a receiver operable to receive signals from a source separate from the light, the signals operable to control the operation of the LEDs.

16 . A light comprising:
a housing defining a bottom end and a top end; a heat sink disposed within the housing and including a central body that defines a central aperture and a plurality of external apertures, the central aperture extending along a central axis of the light and each of the external apertures extending along external axes that are parallel to and offset from the central axis; a plurality of arms coupled to the central body and extending outward from the central body, each of the arms including a light receiving surface and a plurality of fins that extend from the light receiving surface toward the central axis; a plurality of LEDs coupled to each of the light receiving surfaces; and a cooling air flow path extending from the bottom of the housing through the heat sink aperture to direct cooling air from the bottom of the housing to the top of the housing.

17 . The light of claim 16 , wherein the housing defines a pair of power tool battery pack receiving slots each arranged to receive a power tool battery pack.

18 . The light of claim 17 , wherein the housing defines an external power source connection arranged to receive an AC power supply from an external power source.

19 . The light of claim 18 , further comprising a power control circuit operable to detect the level of charge in each of the power tool battery packs and to deliver power to the LEDs sequentially from the battery packs beginning with the battery pack having the lowest state of charge.

20 . The light of claim 16 , further comprising a control panel coupled to the housing and operable to display at least two of an intensity of the emitted light, a current power source used to deliver power to the LEDs, a battery charge indication, and a light operating mode indication.

21 . The light of claim 16 , further comprising a receiver operable to receive signals from a source separate from the light, the signals operable to control the operation of the LEDs.

22 . The light of claim 16 , further comprising a tube having a first end connected to the heat sink and a second end positioned at the bottom of the housing, the tube arranged to direct cooling air from the second end to the first end to provide cooling air to the central aperture.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Harvey Kyle
• Mcintyre Ross
• Proeber David
• Isaacs Jason
• Schermerhorn Joshua
• Cornell Brian

Classifications

• F21V29/83 Primary

  the elements having apertures, ducts or channels, e.g. heat radiation holes · CPC title

• F21V23/006

  the substrate being distinct from the light source holder · CPC title

• F21Y2101/00

  Point-like light sources · CPC title

• F21S9/02

  the power supply being a battery or accumulator · CPC title

• F21L4/08

  characterised by means for in situ recharging of the batteries or cells · CPC title