CN209944255U

CN209944255U - Regional lamp

Info

Publication number: CN209944255U
Application number: CN201790000558.7U
Authority: CN
Inventors: R·麦金太尔; K·哈尔韦
Original assignee: Milwaukee Electric Tool Corp
Current assignee: Milwaukee Electric Tool Corp
Priority date: 2016-02-25
Filing date: 2017-02-17
Publication date: 2020-01-14
Anticipated expiration: 2027-02-17
Also published as: TWM546475U; CN215174285U; EP3423749A1; CN215174284U; EP3423749A4; WO2017147019A1; CN212361657U

Abstract

An area light includes a housing defining a central axis and including a first portion and a second portion, the second portion being arranged to emit light. A lens is coupled to the housing and a light assembly is disposed within the second portion. The light assembly includes a plurality of LEDs arranged to emit light through the lens and in a direction extending 360 degrees around the central axis. A battery is selectively coupled to the housing and arranged to provide power to the LEDs to allow light to be emitted at a level of at least 5700 lumens for at least two hours.

Description

Regional lamp

Data of related applications

This patent application claims priority from U.S. provisional patent application No. 62/299,757, filed on 25/2/2016 and U.S. patent application No. 15/200,037, filed on 1/7/2016.

Technical Field

The present invention relates to a light emitting device, and more particularly to a portable workspace lighting device.

SUMMERY OF THE UTILITY MODEL

One aspect of the present disclosure provides an area light that includes a power inlet connectable to a power source, a housing supporting a light assembly, and a user interface including a control member configured to operate the light assembly between a plurality of operating modes.

In one configuration, the present invention provides a zone light that includes a housing, a lens, a light assembly, a battery, a control unit, and a pivotable hook. The housing defines a central axis and includes a first portion and a second portion, the second portion being arranged to emit light. The lens is connected to the housing. The lamp assembly includes a heat sink having a plurality of radially extending arms and an outward facing surface including one or more LEDs. One or more LEDs are arranged to emit light through the lens and in a direction extending 360 degrees around the central axis and in a direction parallel to the central axis. The battery is configured to provide power to the one or more LEDs. The control unit is operable to control the distribution of power to the one or more LEDs. Where the light passing through the lens ranges between 3500 and 5500 lumens.

In another configuration, the present invention provides an area light comprising a housing, a lens, a light assembly and a battery. The housing defines a central axis. The lens is connected to the housing. The lamp assembly is disposed within the lens and includes one or more LEDs. One or more LEDs are disposed to emit light through the lens and in a direction extending 360 degrees around the central axis. The battery is used to provide power to the one or more LEDs. Wherein the light passing through the lens ranges between 3500 and 5500 lumens.

In another configuration, the present invention provides an area light comprising a housing, a lens, a light assembly, a control unit and a pivotable hook. The housing defines a central axis. The lens is connected to the housing. The lamp assembly includes one or more LEDs. One or more LEDs are arranged to emit light through the lens and in a direction extending 360 degrees around the central axis. The control unit is operable to control the distribution of power to the one or more LEDs.

In some configurations, the power source is a battery, the lamp assembly is an LED array, and the user interface includes a first control member for turning the lamp assembly on and off and a second control member for operating the lamp between two or more intensity levels.

In some configurations, the battery is a 5 amp/hour battery and is capable of powering the LED array to produce between 5700 lumens and 7700 lumens for 1 to 3 hours. More specifically, the battery is configured to provide power to the LED array to produce 6700 lumen counts for about 2 hours.

In some configurations, the lamp assembly is an array of 80 to 280 LEDs. More specifically, the lamp assembly is an array of 180 LEDs. The LED array may be configured to emit light at about 3700-. More specifically, the light emitted by the LED is about 4000 kelvin, with a CRI of about 70.

In some constructions, the housing includes a lens (lens) surrounding the lamp assembly. The lens is configured to withstand a two meter drop test. The lens is detachably coupled to the housing. Approximately 3500 and 5500 lumens pass through the lens when the lens is coupled to the housing and surrounds the lamp assembly. More specifically, approximately 4500 lumens will pass through the lens.

Other features and aspects of the present invention will become apparent by consideration of the following detailed description and accompanying drawings.

Drawings

FIG. 1 is a front perspective view of an area light.

Fig. 2 is a first side rear perspective view of the area light.

Fig. 3 is a second side rear perspective view of the area light.

Fig. 4 is a front view of an area light.

Fig. 5 is a top view of an area light.

Fig. 6 is a bottom view of the area lamp.

Fig. 7 is a perspective view of the area light of fig. 1 with the lens removed.

FIG. 8 is a perspective view of the area light of FIG. 7 with a portion of the light assembly and lens removed.

Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

Detailed Description

Fig. 1-8 illustrate an area light 10 configured to provide illumination to a workspace. The area light 10 may be held by a user or hung from a support member using features discussed in more detail below. In addition, the area lights 10 may be controlled via the user interface 14 to operate in multiple lighting modes.

Referring to fig. 1-3, the area light 10 includes a housing 18 having a port 22 at one end, the port 22 being configured to removably support a battery 26. Housing 18 also includes a power inlet 30 (e.g., an AC power inlet, etc.) and a power outlet 34 (e.g., a standard three-pin adapter, any standard electrical outlet used in countries throughout the world, etc.) that is spaced apart from port 22 and configured to allow multiple lamps 10 to be connected to the same power source via connections with other lamps 10. In short, a plurality of lamps 10 may be "daisy chained" together. In the illustrated construction, the power inlet 30 and power outlet 34 are selectively covered by pivoting

doors

38, 42 so that the inlet 30 and outlet 34 may be covered and protected when not in use.

The battery 26 and/or an external power source are configured to provide power to the lamp assembly 46 via the port 22 and the power inlet 30, respectively. In a preferred construction, the battery 26 is a power tool battery pack that can be inserted into the port 22 and removed from the port 22 without the need to disassemble the lamp 10. In one configuration, the lamp assembly 46 includes an array of LEDs. For example, the lamp assembly 46 may be an array of approximately 80-280 LEDs. More specifically, the lamp assembly 46 may be an array of 180 LEDs. In a specific example, the LED array is configured to produce approximately 5700 and 7700 lumens for approximately two hours when powered by a 5 amp/hour battery. Further, the light emitted by the LED is about 3700-. More specifically, the emitted light is about 4000 kelvin and the CRI is about 70.

Referring to fig. 1-4, the housing 18 is also configured to support a lens 50 surrounding the lamp assembly 46. In some configurations, lens 50 may be removably coupled to housing 18. For example, the lens 50 may be coupled to the housing 18 using a set of fasteners, a ball detent, an interference fit, or other suitable mechanism.

In some configurations, lens 50 is configured to withstand a two meter drop test without any adverse functional impact. This may be achieved by making the lens have a certain thickness or by constructing the lens 50 with various materials. Additionally, the lens 50 is also configured to have a particular light transmission characteristic, i.e., the lens 50 may be configured to transmit a particular percentage, color, or other light characteristic from the lamp assembly 46 to the surrounding workspace. In a particular example, lens 50 is configured to transmit approximately 3500 and 5500 lumens from the lamp assembly to the workspace. More specifically, lens 50 is configured to transmit 4500 lumens from lamp assembly 46 to the workspace. The lens also shifts the color temperature of the light by about 200 kelvin, such that the light exiting the lens has a color temperature between about 3500 kelvin and 4100 kelvin.

Referring to fig. 1 and 4, the area light 10 includes a user interface 14 disposed on a housing 18. In the illustrated construction, the user interface 14 includes a first control member 54, a second control member 58, and a third control member 62. The first control member 54 may be a button, switch, or any suitable control mechanism configured to switch the lamp assembly 46 between an energized state (i.e., on) and a de-energized state (i.e., off). The second control member 58 may also be a button, switch, or any suitable control mechanism configured to turn portions of the light assembly 46 on and off. Accordingly, the lamp assembly 46 may be operated such that only a portion of the lamp assembly 46 is energized. For example, half of the lamp assembly 46 (split along any axis) may be powered on while the other half is powered off, or vice versa. The third control member 62 may also be a button, switch, or any suitable control mechanism configured to control the intensity of light emitted by the light assembly 46. For example, the third control member 62 may manipulate light between high, medium, and low intensities. Other intermediate intensities may also be included. In the specific example of the LED lamp assembly described above, pulse width modulation is used to accomplish light intensity control, although other alternative methods known in the art may also be used. While three separate control members are shown and described, other configurations may combine some of the functions described into fewer than three control members, or may include additional control members that allow for different operating functions.

The area light 10 also includes an internal control unit 66, such as a microcontroller or memory unit that stores information and can perform functions. The internal control unit 66 is configured to store the state of the light set by the second and

third control members

58, 62 when the lamp assembly 46 is powered on and off by the first control member 54. This results in the lamp 10 being turned on and off while maintaining the most recent light state (e.g., the portion of the lamp turned on and the intensity level), thereby allowing the user to turn the lamp on with the last setting without having to adjust the lamp.

Referring to fig. 5, the area light 10 includes a pivotable handle 70, the handle 70 having a portion configured to be grasped by a user. Alternatively, the handle 70 may also be configured to hang from a support member (e.g., hook, pole, etc.) within the workspace to suspend the light from the ground. The handle 70 is shown in a stowed position and may be pivoted to a carrying position in which a user may carry the lamp 10 or hang the lamp 10 from a support member.

Referring to fig. 6, the area light 10 includes a pivotable hook 74 and a reinforcing support plate 78 located within a slot 82. The pivotable hook 74 defines an open end 76 such that the hook 74 is pivotable relative to the lamp 10 to facilitate hanging the lamp 10 from a support member within a work space. The slot 82 is configured to receive a support member, such as a fastener head or hook, wherein the support member abuts the support plate 78. In this manner, the lamp 10 may be suspended from a support member within a workspace.

In operation, the handle 70, pivotable hook 74, and slot 82 allow a user to couple the area light 10 to a support member in a workspace. By using the user interface 14, a user may energize the lamp assembly 46 using the first control member 54 and adjust other lamp assembly characteristics using the second and

third control members

58, 62. For example, a user may operate the lamp assembly at a desired intensity while energizing only a portion of the lamps.

The lamp may also include a power control circuit that allows the lamp to select the power source from or to which power is delivered. For example, the power control circuit may be arranged to deliver power to the LEDs from an external power source when the power source is available, and to automatically switch or select the battery as the power source when the external power source is unavailable. Further, when the external power source supplies power to the LED, the battery may be charged by the external power source.

Fig. 7 and 8 illustrate the area light of fig. 1-6 with lens 50 removed to better illustrate features of light assembly 46. Referring to fig. 8, the lamp assembly 46 includes a heat sink 102 supporting a number of LEDs 104. The heat sink 102 includes a central tube portion 106 extending along a central axis 108 and eight arms 110 extending radially outward from the central tube 106. Each arm 110 includes an outwardly facing surface 112 to which a plurality of LEDs 104 are attached. A plurality of fins 114 extend inwardly from the outwardly facing surface 112 toward the center tube 106 to enhance the cooling capacity of the heat sink 102. Each arm 110 (or group of arms 110) defines a sector 116, wherein the sector 116 extends 360 degrees around the central axis 108 or central tube 106. The user interface 14, the first control member 54, the second control member 58, the third control member 62, or the control unit is operable to activate the LED 104 on a per sector basis. Thus, in use, a user may activate LEDs 104 of a single sector 116 or LEDs 104 on multiple sectors 116 as desired. In one configuration, two adjacent arms 110 define sectors 118 such that a user can activate light to illuminate a 90 degree wedge (wedge), a 180 degree wedge, a 270 degree wedge, or the entire 360 degree area around the lamp 10. The control unit can store the on/off configuration of the

respective sectors

116, 118 when the lamp 10 is switched off, to allow the same sector on/off configuration when the lamp 10 is reactivated.

As shown in fig. 7, the board 120 is located on top of the heat sink 102 and comprises a plurality of LEDs 104, which LEDs 104 are arranged to direct light in a direction parallel to the central axis 108. The plate 120 and the LEDs 104 define a planar sector 122, which may be controlled as a separate sector 122 (as discussed with respect to fig. 8), or may be combined with another

sector

116, 118 of the lamp 10.

Although the invention has been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope and spirit of one or more independent aspects of the invention as described.

Claims

1. An area light, comprising:

a housing defining a central axis and comprising a first portion and a second portion, the second portion arranged to emit light;

a lens connected to the housing;

a lamp assembly including a heat sink having a plurality of radially extending arms and an outwardly facing surface comprising one or more LEDs arranged to pass through the lens and emit light in a direction extending 360 degrees around the central axis and in a direction parallel to the central axis;

a battery to provide power to the one or more LEDs;

a control unit operable to control the distribution of power to the one or more LEDs; and

the hook can be pivoted with the hook body,

where the light passing through the lens ranges between 3500 and 5500 lumens.

2. The area light of claim 1, further comprising a first control member configured to switch the light assembly between an energized state and a de-energized state, a second control member configured to vary an intensity of the light assembly.

3. The area lamp of claim 1, wherein the light passing through the lens is in a temperature range between 3700 and 4300 kelvin.

4. The area light of claim 3, wherein the light passing through the lens has a color rendering index between 50 and 100.

5. The area light of claim 1, further comprising a slot configured to receive a support member configured to support the light.

6. The area light of claim 5, further comprising a support plate disposed within the slot.

7. The area light of claim 1, wherein the battery is disposed in a port on the housing.

8. The area lamp of claim 1, wherein the lamp assembly comprises a plurality of sectors extending 360 degrees around a central axis.

9. The area light of claim 8 further comprising a control unit operable to control power distribution to the plurality of LEDs, the control unit operable to selectively direct power to all or a subset of the plurality of sectors.

10. The area light of claim 9, wherein the control unit comprises a memory portion that stores the on/off configuration of the plurality of sectors.

11. An area light, comprising:

a housing defining a central axis;

a lens connected to the housing;

a lamp assembly disposed within the lens, the lamp assembly including one or more LEDs disposed through the lens and emitting light in a direction extending 360 degrees around a central axis; and

a battery for providing power to the one or more LEDs,

wherein the light passing through the lens ranges between 3500 and 5500 lumens.

12. The area lamp of claim 11, wherein the lamp assembly comprises a heat sink having a plurality of arms extending radially outward from the central axis, each of the arms having a plurality of fins.

13. The area light of claim 11, wherein the light passing through the lens has a temperature range between 3500 and 4100 kelvin.

14. The area light of claim 13, wherein the one or more LEDs are selected to emit light having a color rendering index between 50 and 100.

15. The area light of claim 11, wherein the battery is selectively coupled to the housing and arranged to provide power to the one or more LEDs to allow light to be emitted at a level of at least 5700 lumens for at least two hours.

16. The area light of claim 15, wherein the light assembly is configured to emit light through the lens in a direction parallel to the central axis.

17. The area light of claim 11, further comprising a pivotable hook.

18. The area light of claim 11, further comprising a control unit operable to control the distribution of power to the one or more LEDs.

19. The area light of claim 18, wherein the control unit is configured to store the intensity levels of the one or more LEDs when a light assembly is powered on and off so that the light assembly can be turned on and off while maintaining the latest intensity level of the one or more LEDs.

20. An area light, comprising:

a housing defining a central axis;

a lens connected to the housing;

a lamp assembly comprising one or more LEDs arranged to emit light through a lens and in a direction extending 360 degrees around a central axis;

a pivotable hook.