Lighting device

Abstract

To light a wide range efficiently.SOLUTION: A lighting device includes: a housing; a light emitting element which is operated by electric power supplied from a battery pack; and a penetration member which is supported by the housing and through which at least part of light from the light emitting element penetrates. An outer surface of the housing includes: a first outer surface; and a second outer surface located adjacent to the first outer surface and directed in a different direction from the first outer surface. The penetration member is arranged so as to span the first outer surface and the second outer surface.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a lighting device. [Background technology]

[0002] Known in the technical field related to lighting devices is a portable lamp as disclosed in Patent Document 1. In Patent Document 1, the portable lamp has a first light source and a second light source each made of an LED. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6982732 Summary of the Invention [Problem to be solved by the invention]

[0004] Illumination devices are required to efficiently illuminate a wide range.

[0005] The technology disclosed in this specification aims to efficiently illuminate a wide range. [Means for solving the problem]

[0006] This specification discloses a lighting device. The lighting device may include a housing, a light-emitting element operated by power supplied from a battery pack, and a transparent member supported by the housing and through which at least a portion of light from the light-emitting element is transmitted. The outer surface of the housing may include a first outer surface and a second outer surface adjacent to the first outer surface and facing in a different direction from the first outer surface. The transparent member may be disposed to span the first outer surface and the second outer surface. Effect of the Invention

[0007] According to the technology disclosed in this specification, a wide range can be efficiently illuminated. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a lighting device and a battery pack according to an embodiment, as viewed from the right front. [Diagram 2] FIG. 2 is a perspective view showing the lighting device and the battery pack according to the embodiment, seen from the left rear. [Diagram 3] FIG. 3 is a right side view showing the lighting device and the battery pack according to the embodiment. [Figure 4] FIG. 4 is a top view showing the lighting device and the battery pack according to the embodiment. [Diagram 5] FIG. 5 is a front view showing the lighting device and the battery pack according to the embodiment. [Figure 6] FIG. 6 is a perspective view from the right front showing the lighting device removed from the battery pack according to the embodiment. [Figure 7] FIG. 7 is a perspective view showing the lighting device according to the embodiment, seen from below. [Figure 8] FIG. 8 is an exploded perspective view showing the lighting device and the battery pack according to the embodiment, as viewed from the right front. [Figure 9] FIG. 9 is a perspective cross-sectional view showing the lighting device and the battery pack according to the embodiment, seen from the right front. [Figure 10] FIG. 10 is a side cross-sectional view showing the lighting device and the battery pack according to the embodiment. [Figure 11] FIG. 11 is a perspective view showing a state in which the output terminal cover according to the embodiment is opened. [Figure 12] FIG. 12 is a perspective view showing the lighting device to which the second transmissive member according to the embodiment is attached, viewed from the right front. [Figure 13] FIG. 13 is a perspective view showing the second transmissive member and the illumination device according to the embodiment, seen from the right front. [Figure 14] FIG. 14 is a perspective view showing the second transmissive member and the illumination device according to the embodiment, viewed from the left. [Figure 15]FIG. 15 is a cross-sectional view showing a part of a lighting device to which a second transmissive member according to an embodiment is attached. [Figure 16] FIG. 16 is a diagram showing a lighting device to which a hanging member according to an embodiment is attached. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In one or more embodiments, the lighting device may include a housing, a light-emitting element operated by power supplied from a battery pack, and a transparent member supported by the housing and transmitting at least a portion of light from the light-emitting element. The outer surface of the housing may include a first outer surface and a second outer surface adjacent to the first outer surface and facing in a different direction from the first outer surface. The transparent member may be disposed across the first outer surface and the second outer surface.

[0010] In the above configuration, since the transparent member is disposed across the first and second outer surfaces of the housing, the light emitted from the light-emitting element is irradiated to each of the space facing the first outer surface and the space facing the second outer surface. Since the first and second outer surfaces face in different directions, the light emitted from the light-emitting element is irradiated over a wide range. In addition, since the transparent member is a single member, the light emitted from the light-emitting element is efficiently irradiated around the transparent member. Therefore, the lighting device can efficiently illuminate a wide range.

[0011] In one or more embodiments, the transparent member may include a first light transmitting portion adjacent to the first outer surface, a second light transmitting portion adjacent to the second outer surface, and a third light transmitting portion connecting the first light transmitting portion and the second light transmitting portion.

[0012] In the above configuration, the light emitted from the light emitting element is efficiently irradiated to the periphery of the transmissive member via each of the first light transmitting portion, the second light transmitting portion, and the third light transmitting portion.

[0013] In one or more embodiments, the first light transmitting portion may be flat, the second light transmitting portion may be flat, and the third light transmitting portion may be bent so as to connect the first light transmitting portion and the second light transmitting portion.

[0014] In the above configuration, the light emitted from the light emitting element is efficiently irradiated to the periphery of the transmissive member via each of the first light transmitting portion, the second light transmitting portion, and the third light transmitting portion.

[0015] In one or more embodiments, the exit surface of the first light transmitting portion may be adjacent to the first outer surface and face the same direction as the first outer surface. The exit surface of the second light transmitting portion may be adjacent to the second outer surface and face the same direction as the second outer surface. The exit surface of the third light transmitting portion may be disposed to connect the exit surface of the first light transmitting portion and the exit surface of the second light transmitting portion, and may be curved in a cross section perpendicular to each of the exit surface of the first light transmitting portion and the exit surface of the second light transmitting portion.

[0016] In the above configuration, the light emitted from the light emitting element is efficiently irradiated to the periphery of the transmissive member via each of the first light transmitting portion, the second light transmitting portion, and the third light transmitting portion.

[0017] In one or more embodiments, the light emitting element may include a first light emitting element facing the incident surface of the first light transmissive portion and a second light emitting element facing the incident surface of the second light transmissive portion.

[0018] With the above configuration, the lighting device can be easily assembled.

[0019] In one or more embodiments, the lighting device may include a first substrate on which the first light emitting element is attached, and a second substrate on which the second light emitting element is attached. The first substrate and the second substrate may be disposed so as to be orthogonal to each other in a cross section orthogonal to each of the emission surface of the first light transmitting portion and the emission surface of the second light transmitting portion.

[0020] In the above configuration, since the first light-emitting element and the second light-emitting element are disposed near the third light-transmitting portion, which is a corner of the transparent member, the illumination device can uniformly illuminate a wide range. The illumination device can suppress the vicinity of the third light-transmitting portion, which is, for example, the corner of the transparent member, from becoming dark.

[0021] In one or more embodiments, the lighting device may include a battery mounting portion disposed on the housing to which the battery pack is attached.

[0022] In the above configuration, the light emitting element is operated by power supplied from the battery pack attached to the battery attachment portion.

[0023] In one or more embodiments, the battery mounting portion may be provided on a bottom surface of the housing. The battery pack may be mounted on the battery mounting portion by sliding the battery pack into the battery mounting portion from a rear side of the battery mounting portion. The first outer surface may be a top surface of the housing.

[0024] In the above configuration, the light emitted from the light emitting element is irradiated into the space above the lighting device.

[0025] In one or more embodiments, the second exterior surface may be a front surface of the housing.

[0026] In the above configuration, the light emitted from the light-emitting element is irradiated into the space in front of the lighting device.

[0027] In one or more embodiments, the housing may include a locking portion onto which a second transparent member is hooked, the second transparent member being disposed over the transparent member.

[0028] In the above configuration, the second transparent member is fixed to the housing.

[0029] In one or more embodiments, the transmissive member may be a diffusing member.

[0030] In the above configuration, since the transmissive member is a diffusing member that diffuses at least a portion of the light from the light emitting element, the lighting device can uniformly illuminate a wider range.

[0031] In one or more embodiments, the exterior surface of the housing may include a third exterior surface orthogonal to each of the first exterior surface and the second exterior surface. The third exterior surface may not protrude from a side surface of the battery pack.

[0032] In the above configuration, the lighting device can be installed on the support surface so that the side surface of the battery pack faces the support surface.

[0033] In one or more embodiments, the third outer surface may be adjacent to each of the first outer surface and the second outer surface, and the transparent member may be positioned so as not to span the third outer surface.

[0034] In the above configuration, the light emitted from the light-emitting element is irradiated to the space facing the first outer surface and the space facing the second outer surface, but is not irradiated to the space facing the third space. Therefore, the light emitted from the light-emitting element is prevented from being irradiated to unnecessary spaces.

[0035] In one or more embodiments, the exterior surface of the housing may include a fourth exterior surface disposed opposite the second exterior surface, and the housing may have a first connector disposed on the fourth exterior surface to which the suspension member is attached.

[0036] In the above configuration, the housing is suspended from the suspension member so that the second outer surface faces downward, whereby the light emitted from the light-emitting element is irradiated into the space below the lighting device.

[0037] In one or more embodiments, the housing may have a second connector on the second exterior surface to which the suspension member is attached.

[0038] In the above configuration, the hanging member can suspend the housing more stably.

[0039] Hereinafter, an embodiment according to the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiment. The components of the embodiments described below can be appropriately combined. In addition, some components may not be used.

[0040] In the embodiment, the positional relationship of each part is described using the terms "front", "rear", "left", "right", "up" and "down". These terms indicate relative positions or directions based on the center of the lighting device 1. In addition, a virtual axis extending in the front-rear direction is appropriately referred to as the front-rear axis, a virtual axis extending in the left-right direction is appropriately referred to as the left-right axis, and a virtual axis extending in the up-down direction is appropriately referred to as the up-down axis. The front-rear axis and the left-right axis are perpendicular to each other. The left-right axis and the up-down axis are perpendicular to each other. The up-down axis and the front-rear axis are perpendicular to each other.

[0041] FIG. 1 is a perspective view of the lighting device 1 and the battery pack 2 according to the embodiment from the right front. FIG. 2 is a perspective view of the lighting device 1 and the battery pack 2 according to the embodiment from the left rear. FIG. 3 is a right side view of the lighting device 1 and the battery pack 2 according to the embodiment. FIG. 4 is a top view of the lighting device 1 and the battery pack 2 according to the embodiment. FIG. 5 is a front view of the lighting device 1 and the battery pack 2 according to the embodiment. FIG. 6 is a perspective view of the lighting device 1 removed from the battery pack 2 according to the embodiment from the right front. FIG. 7 is a perspective view of the lighting device 1 according to the embodiment from below. FIG. 8 is an exploded perspective view of the lighting device 1 and the battery pack 2 according to the embodiment from the right front. FIG. 9 is a perspective cross-sectional view of the lighting device 1 and the battery pack 2 according to the embodiment from the right front. FIG. 10 is a side cross-sectional view of the lighting device 1 and the battery pack 2 according to the embodiment.

[0042] In the embodiment, the lighting device 1 is a portable lighting device that can be lifted and carried by a user of the lighting device 1. The lighting device 1 is a rechargeable lighting device that operates with power supplied from a rechargeable battery pack 2.

[0043] A user can use the lighting device 1 at a work site. For example, when a task using a power tool is performed at a work site, the lighting device 1 is used to illuminate the power tool or the work target. The lighting device 1 is used, for example, to illuminate the area around the user's hands.

[0044] The lighting device 1 includes a housing 3, a housing cover 4, a battery mounting section 5, a lighting section 6, a controller 7, a power button 8, an output terminal cover 9, an output button 10, a first connecting section 11, and a second connecting section 12.

[0045] The housing 3 accommodates at least a part of the illumination unit 6 and the controller 7. The housing 3 is made of synthetic resin. An example of the synthetic resin from which the housing 3 is made is ABS resin.

[0046] The outer surfaces of the housing 3 include a front surface 3A, a rear surface 3B, a left surface 3C, a right surface 3D, a top surface 3E, and a bottom surface 3F. Each of the front surface 3A, the rear surface 3B, the left surface 3C, the right surface 3D, the top surface 3E, and the bottom surface 3F is substantially flat. The front surface 3A faces forward. The rear surface 3B faces rearward. The left surface 3C faces leftward. The right surface 3D faces leftward. The top surface 3E faces upward. The bottom surface 3F faces downward. The front surface 3A is substantially perpendicular to the front-to-rear axis. The rear surface 3B is inclined downward toward the rear. The left surface 3C is substantially perpendicular to the left-to-right axis. The right surface 3D is substantially perpendicular to the left-to-right axis. The top surface 3E is substantially perpendicular to the up-down axis.

[0047] The upper end of the front surface 3A is adjacent to the front end of the upper surface 3E. The left end of the front surface 3A is adjacent to the front end of the left surface 3C. The right end of the front surface 3A is adjacent to the front end of the right surface 3D. The left end of the upper surface 3E is adjacent to the upper end of the left surface 3C. The right end of the upper surface 3E is adjacent to the upper end of the right surface 3D. The upper end of the rear surface 3B is adjacent to the rear end of the upper surface 3E. The left end of the rear surface 3B is adjacent to the rear end of the left surface 3C. The right end of the rear surface 3B is adjacent to the rear end of the right surface 3D.

[0048] The housing 3 includes a left housing 3L and a right housing 3R disposed to the right of the left housing 3L. The left housing 3L and the right housing 3R are fixed together by a plurality of screws 3S. The housing 3 is made up of a pair of half housings.

[0049] The housing cover 4 covers at least a part of the outer surface of the housing 3. The housing cover 4 is made of elastomer. In the embodiment, the housing cover 4 is arranged so as to cover a part of the front surface 3A, a part of the left surface 3C, a part of the right surface 3D, and a part of the top surface 3E. The housing cover 4 is arranged so as to cover each of the boundary between the front surface 3A and the top surface 3E, the boundary between the front surface 3A and the left surface 3C, the boundary between the front surface 3A and the right surface 3D, the boundary between the top surface 3E and the left surface 3C, and the boundary between the top surface 3E and the right surface 3D.

[0050] The battery attachment section 5 is provided on the lower surface 3F of the housing 3. The battery pack 2 is attached to the battery attachment section 5. The battery pack 2 is attached to and detached from the battery attachment section 5. The battery pack 2 includes a rechargeable battery. An example of the rechargeable battery is a rechargeable lithium ion battery. The battery pack 2 is a slide-type battery pack. The battery pack 2 is a battery pack for a power tool.

[0051] The battery pack 2 has a housing 2B having an attachment surface 2A, a pair of slide portions 2C, a protrusion portion 2D movably supported on the housing 2B, a release button 2E for operating the protrusion portion 2D, a pair of power terminals 2F, and a pair of signal terminals 2G. The housing 2B has an internal space. A battery cell (not shown) is accommodated in the internal space of the housing 2B. The battery cell includes a rechargeable lithium ion battery. The slide portion 2C extends in the front-rear direction. The protrusion portion 2D is movably supported by a spring. The protrusion portion 2D protrudes from the attachment surface 2A due to the elastic force of the spring. The power terminal 2F is disposed between the pair of slide portions 2C. The signal terminal 2G is disposed between the pair of power terminals 2F.

[0052] The battery mounting portion 5 has a guide portion 5B, a lock portion 5C, a power terminal 5D, and a signal terminal 5E.

[0053] The lower surface 3F of the housing 3 faces the mounting surface 2A of the battery pack 2.

[0054] The guide portion 5B guides the battery pack 2 in a specified guide direction. The slide portion 2C of the battery pack 2 is guided by the guide portion 5B. Two guide portions 5B are provided in the left-right direction. The guide direction of the guide portion 5B is the front-rear direction.

[0055] The locking portion 5C is provided on the lower surface 3F of the housing 3. A protrusion 2D of the battery pack 2 is hooked onto the locking portion 5C. The battery mounting portion 5 and the battery pack 2 are fixed together by hooking the protrusion 2D onto the locking portion 5C. The fixation between the battery mounting portion 5 and the battery pack 2 is released by operating the release button 2E.

[0056] The power terminal 5D is connected to a power terminal 2F of the battery pack 2. The signal terminal 5E is connected to a signal terminal 2G of the battery pack 2. By connecting the power terminal 5D of the battery mounting unit 5 and the power terminal 2F of the battery pack 2, power is supplied from the battery pack 2 to the lighting device 1.

[0057] When mounting the battery pack 2 on the battery mounting section 5, the user of the lighting device 1 brings the front end of the slide section 2C of the battery pack 2 into contact with the rear end of the guide section 5B of the battery mounting section 5, and then slides the battery pack 2 forward relative to the battery mounting section 5. The battery pack 2 moves forward while being guided by the guide section 5B. The protrusion section 2D of the battery pack 2 is hooked on the lock section 5C of the battery mounting section 5, so that the battery pack 2 is fixed to the battery mounting section 5. In this manner, the battery pack 2 is mounted on the battery mounting section 5 by sliding it forward relative to the battery mounting section 5 from the rear of the battery mounting section 5. In addition, the power terminal 2F of the battery pack 2 is connected to the power terminal 5D of the battery mounting section 5, so that power is supplied from the battery pack 2 to the lighting device 1.

[0058] When removing the battery pack 2 from the battery attachment section 5, the user of the lighting device 1 operates the release button 2E. By operating the release button 2E, the protrusion 2D is released from the lock section 5C. By removing the protrusion 2D from the lock section 5C, the fixation between the battery attachment section 5 and the battery pack 2 is released. After the fixation between the battery attachment section 5 and the battery pack 2 is released, the battery pack 2 is slid backward, whereby the battery pack 2 is removed from the battery attachment section 5.

[0059] In the left-right direction, the dimension of the lighting device 1 is smaller than the dimension of the battery pack 2. When the battery pack 2 is attached to the battery attachment portion 5, the left surface 3C of the housing 3 does not protrude leftward from the left surface 2L of the housing 2B of the battery pack 2. The right surface 3D of the housing 3 does not protrude rightward from the right surface 2R of the housing 2B of the battery pack 2. In other words, the left surface 3C and the right surface 3D of the housing 3, which are perpendicular to the front surface 3A and the top surface 3E, respectively, do not protrude outward from the side surfaces of the housing 2B of the battery pack 2.

[0060] The lighting unit 6 includes a circuit board 13, a circuit board 14, a plurality of light-emitting elements 15 mounted on the circuit board 13, a plurality of light-emitting elements 16 mounted on the circuit board 14, a heat sink 17 connected to each of the circuit boards 13 and 14, a reflector 18 arranged in a portion of the periphery of the light-emitting elements 15, a reflector 19 arranged in a portion of the periphery of the light-emitting elements 16, and a transparent member 20 through which light emitted from at least one of the light-emitting elements 15 and the light-emitting elements 16 passes.

[0061] Circuit board 13 is disposed so that the surface of circuit board 13 faces upward. Circuit board 14 is disposed so that the surface of circuit board 14 faces forward.

[0062] The light-emitting element 15 operates by power supplied from the battery pack 2. The light-emitting element 15 is mounted on the surface (upper surface) of the circuit board 13. The light-emitting element 15 is a light-emitting diode (LED). The light emission surface of the light-emitting element 15 faces upward. The multiple light-emitting elements 15 are arranged at intervals in the left-right direction. In the embodiment, four light-emitting elements 15 are arranged at equal intervals in the left-right direction.

[0063] The light-emitting element 16 operates with power supplied from the battery pack 2. The light-emitting element 16 is mounted on the surface (front surface) of the circuit board 14. The light-emitting element 16 is a light-emitting diode (LED). The light emission surface of the light-emitting element 16 faces forward. The multiple light-emitting elements 16 are arranged at intervals in the left-right direction. In the embodiment, four light-emitting elements 16 are arranged at equal intervals in the left-right direction.

[0064] The heat sink 17 dissipates heat from the circuit board 13 and the circuit board 14 to the surroundings. The heat sink 17 is made of metal. An example of the metal that forms the heat sink 17 is aluminum. The heat sink 17 has a first support portion 17A connected to the back surface (lower surface) of the circuit board 13 and a second support portion 17B connected to the back surface (rear surface) of the circuit board 14.

[0065] The reflector 18 reflects the light emitted from the light-emitting element 15. The reflector 19 reflects the light emitted from the light-emitting element 16. Each of the reflectors 18 and 19 has a body portion and a reflective film provided on the surface of the body portion. The body portion is made of, for example, polycarbonate resin. The reflective film is a metal film. An example of a metal that forms the reflective film is silver. The reflective film is formed by plating the body portion. The surface of the reflective film of the reflector 18 is a reflective surface that reflects the light emitted from the light-emitting element 15. The surface of the reflective film of the reflector 19 is a reflective surface that reflects the light emitted from the light-emitting element 16.

[0066] The reflector 18 has a reflective surface disposed to surround the plurality of light-emitting elements 15. The reflector 18 has a reflective surface that reflects light emitted from the light-emitting elements 15 so that at least a portion of the light travels upward. The reflector 18 is connected to the surface (top surface) of the circuit board 13.

[0067] The reflector 19 has a reflective surface disposed to surround the plurality of light-emitting elements 16. The reflector 19 has a reflective surface that reflects light emitted from the light-emitting elements 16 so that at least a portion of the light travels forward. The reflector 19 is connected to a surface (front surface) of the circuit board 14.

[0068] The reflector 18, the circuit board 13, and the first support portion 17A of the heat sink 17 are fixed together with two screws 18S. The reflector 19, the circuit board 14, and the second support portion 17B of the heat sink 17 are fixed together with two screws 19S. The circuit board 13, the circuit board 14, the heat sink 17, the reflector 18, and the reflector 19 are sandwiched between the left housing 3L and the right housing 3R. The circuit board 13, the circuit board 14, the heat sink 17, the reflector 18, and the reflector 19 are fixed to the housing 3.

[0069] The transparent member 20 is disposed so as to cover the light-emitting element 15 and the light-emitting element 16. The transparent member 20 is light-transmitting. At least a portion of the light from the light-emitting element 15 passes through the transparent member 20. The transparent member 20 is a diffusing member that diffuses the light emitted from the light-emitting element 15 to the surroundings. At least a portion of the light from the light-emitting element 16 passes through the transparent member 20. The transparent member 20 is a diffusing member that diffuses the light emitted from the light-emitting element 16 to the surroundings. The transparent member 20 protects each of the light-emitting element 15 and the light-emitting element 16.

[0070] The transparent member 20 is made of a light diffusing resin. Even if the light emitted from the light emitting elements 15 and 16 has a strong directivity, the transparent member 20 prevents the straight light from being noticeable and reduces uneven brightness. The transparent member 20 enables the illumination unit 6 to illuminate the surroundings with a uniform illuminance distribution.

[0071] The transmitting member 20 may be made of a transparent synthetic resin or glass.

[0072] The outer surface of the housing 3 includes an upper surface 3E and a front surface 3A adjacent to the upper surface 3E and facing in a different direction from the upper surface 3E. The transparent member 20 is supported by the housing 3. The transparent member 20 is disposed so as to span the upper surface 3E and the front surface 3A of the housing 3.

[0073] The outer surface of the housing 3 has a left surface 3C and a right surface 3D adjacent to the top surface 3E and the front surface 3A, respectively. The left surface 3C faces in a different direction from the top surface 3E and the front surface 3A. The right surface 3D faces in a different direction from the top surface 3E and the front surface 3A. The transparent member 20 does not extend over the left surface 3C and the right surface 3D.

[0074] The transparent member 20 includes a first light transmitting portion 21 adjacent to the upper surface 3E, a second light transmitting portion 22 adjacent to the front surface 3A, and a third light transmitting portion 23 connecting the first light transmitting portion 21 and the second light transmitting portion 22.

[0075] The first light transmitting portion 21 has an incident surface 21A through which light from the light emitting element 15 is incident, and an exit surface 21B through which light from the light emitting element 15 exits. The first light transmitting portion 21 is substantially flat. The incident surface 21A and the exit surface 21B are substantially flat. The incident surface 21A and the exit surface 21B are parallel. The incident surface 21A and the exit surface 21B are substantially perpendicular to the up-down axis. In the embodiment, as shown in FIG. 5, the exit surface 21B is curved such that the central portion in the left-right direction bulges slightly upward.

[0076] The incident surface 21A faces downward. The exit surface 21B faces upward. The exit surface 21B of the first light transmitting portion 21 is adjacent to the upper surface 3E of the housing 3. The upper surface 3E of the housing 3 is disposed at a portion of the periphery of the exit surface 21B. The exit surface 21B of the first light transmitting portion 21 faces in the same direction as the upper surface 3E of the housing 3.

[0077] The second light transmitting portion 22 has an incident surface 22A through which the light from the light emitting element 16 is incident, and an exit surface 22B through which the light from the light emitting element 16 is exited. The second light transmitting portion 22 is substantially flat. The incident surface 22A and the exit surface 22B are substantially flat. The incident surface 22A and the exit surface 22B are parallel. The incident surface 21A and the exit surface 21B are substantially perpendicular to the front-rear axis. In the embodiment, as shown in FIG. 4, the exit surface 22B is curved such that the center portion in the left-right direction bulges slightly forward.

[0078] The incident surface 22A faces rearward. The exit surface 22B faces forward. The exit surface 22B of the second light transmitting portion 22 is adjacent to the front surface 3A of the housing 3. The front surface 3A of the housing 3 is disposed at a portion of the periphery of the exit surface 22B. The exit surface 22B of the second light transmitting portion 22 faces in the same direction as the front surface 3A of the housing 3.

[0079] The angle formed between the first light transmitting portion 21 and the second light transmitting portion 22 is substantially a right angle. The angle formed between the first light transmitting portion 21 and the second light transmitting portion 22 can be regarded as the smaller of the angles formed between the incident surface 21A and the incident surface 22A, or the smaller of the angles formed between the exit surface 21B and the exit surface 22B.

[0080] The third light transmitting portion 23 has an incident surface 23A through which light from one or both of the light emitting element 15 and the light emitting element 16 enters, and an exit surface 23B through which light from one or both of the light emitting element 15 and the light emitting element 16 exits. The third light transmitting portion 23 is bent so as to connect the front end of the first light transmitting portion 21 and the upper end of the second light transmitting portion 22. The incident surface 23A of the third light transmitting portion 23 is disposed so as to connect the front end of the incident surface 21A of the first light transmitting portion 21 and the upper end of the incident surface 22A of the second light transmitting portion 22. The exit surface 23B of the third light transmitting portion 23 is disposed so as to connect the front end of the exit surface 21B of the first light transmitting portion 21 and the upper end of the exit surface 22B of the second light transmitting portion 22.

[0081] The incident surface 23A of the third light transmitting portion 23 is curved in a cross section perpendicular to each of the incident surface 21A of the first light transmitting portion 21 and the incident surface 22A of the second light transmitting portion 22. The incident surface 23A is arcuately recessed upward and forward in a cross section perpendicular to each of the incident surface 21A and the incident surface 22A.

[0082] The emission surface 23B of the third light transmitting portion 23 is curved in a cross section perpendicular to each of the emission surface 21B of the first light transmitting portion 21 and the emission surface 22B of the second light transmitting portion 22. The emission surface 23B is arc-shaped bulging upward and forward in a cross section perpendicular to each of the emission surface 21B and the emission surface 22B.

[0083] The light emitting element 15 is disposed below the first light transmitting section 21. The light emitting element 15 faces the incident surface 21A of the first light transmitting section 21. The light emitted from the light emitting element 15 is incident on the incident surface 21A of the first light transmitting section 21. The light incident on the incident surface 21A is emitted from the exit surface 21B of the first light transmitting section 21. At least a part of the light incident on the incident surface 21A is emitted from the exit surface 23B of the third light transmitting section 23.

[0084] The light emitting element 16 is disposed behind the second light transmitting portion 22. The light emitting element 16 faces the incident surface 22A of the second light transmitting portion 22. The light emitted from the light emitting element 16 is incident on the incident surface 22A of the second light transmitting portion 22. The light incident on the incident surface 22A is emitted from the exit surface 22B of the second light transmitting portion 22. At least a part of the light incident on the incident surface 22A is emitted from the exit surface 23B of the third light transmitting portion 23.

[0085] At least a portion of the light emitted from the light emitting element 15 is incident on the incident surface 23A of the third light transmitting section 23. At least a portion of the light emitted from the light emitting element 16 is incident on the incident surface 23A of the third light transmitting section 23. The light incident on the incident surface 23A is emitted from the exit surface 23B of the third light transmitting section 23.

[0086] The light emitting element 15 is attached to the circuit board 13. The light emitting element 16 is attached to the circuit board 14. The circuit boards 13 and 14 are arranged so as to be perpendicular to each other in a cross section perpendicular to each of the emission surface 21B of the first light transmitting portion 21 and the emission surface 22B of the second light transmitting portion 22. The light emitting element 15 is mounted on the upper surface, which is the mounting surface, of the circuit board 13. The light emitting element 16 is mounted on the front surface, which is the mounting surface, of the circuit board 14. The upper surface of the circuit board 13 and the front surface of the circuit board 14 are substantially perpendicular to each other in a cross section perpendicular to each of the emission surface 21B of the first light transmitting portion 21 and the emission surface 22B of the second light transmitting portion 22.

[0087] The circuit boards 13 and 14 may be disposed in contact with each other. The circuit boards 13 and 14 may be disposed with a gap therebetween that is equal to or smaller than the thickness of the circuit boards 13 and 14.

[0088] The controller 7 controls at least each of the light-emitting elements 15 and the light-emitting elements 16. The controller 7 has a circuit board and a plurality of electronic components mounted on the circuit board. An example of the electronic components is a microcomputer. In the embodiment, the four light-emitting elements 15 are turned on or off at the same time. The four light-emitting elements 16 are turned on or off at the same time. The light-emitting elements 15 and the light-emitting elements 16 can be turned on at the same time. The light-emitting elements 15 and the light-emitting elements 16 can be turned on separately. The controller 7 can switch between a first lighting state in which the light-emitting elements 15 facing upward are turned on and the light-emitting elements 16 facing forward are turned off, a second lighting state in which the light-emitting elements 16 facing forward are turned on and the light-emitting elements 15 facing upward are turned off, a fully lighting state in which both the light-emitting elements 15 and the light-emitting elements 16 are turned on, and a fully off state in which both the light-emitting elements 15 and the light-emitting elements 16 are turned off.

[0089] The power button 8 is operated by the user to turn on or off the light emitting element 15 and the light emitting element 16. At least a part of the power button 8 is disposed on the upper surface 3E of the housing 3. As shown in FIG. 9 and FIG. 10, the power button 8 includes a button portion 8A disposed on the upper surface 3E of the housing 3 and a rod portion 8B extending downward from the button portion 8A. A switch element 7A is disposed at a position facing the lower end of the rod portion 8B. The switch element 7A is mounted on the surface of the circuit board of the controller 7. When the button portion 8A is pressed downward by the user, the switch element 7A is pressed by the rod portion 8B. When the switch element 7A is pressed, the controller 7 turns on or off the light emitting element 15 and the light emitting element 16. A coil spring 8C is disposed around the rod portion 8B. The coil spring 8C generates an elastic force so that the power button 8 moves upward. When the user releases the operation of the power button 8, the power button 8 returns to its initial position by the elastic force of the coil spring 8C.

[0090] The operation of the power button 8 includes a short press operation in which the power button 8 is pressed for a short period of time, and a long press operation in which the power button 8 is pressed for a long period of time.

[0091] When the power button 8 is pressed once in the all-on state, the state switches from the all-on state to the first lighted state. When the power button 8 is pressed once in the first lighted state, the state switches from the first lighted state to the second lighted state. When the power button 8 is pressed once in the second lighted state, the state switches from the second lighted state to the all-off state. When the power button 8 is pressed and held in each of the all-on state, the first lighted state, and the second lighted state, the state switches to the all-off state.

[0092] When the power button 8 is pressed once in the all-off state, the all-off state is switched to any one of the all-on state, the first on state, and the second on state. The controller 7 stores the on state immediately before the all-off state. For example, if the on state immediately before the all-off state is the all-on state, when the power button 8 is pressed once in the all-off state, the all-off state is switched to the all-on state. If the on state immediately before the all-off state is the first on state, when the power button 8 is pressed once in the all-off state, the all-off state is switched to the first on state. If the on state immediately before the all-off state is the second on state, when the power button 8 is pressed once in the all-off state, the all-off state is switched to the second on state.

[0093] 1 to 11, the lighting device 1 may be used with the battery pack 2 disposed below the lighting device 1. The lighting device 1 may be used with the lower surface of the battery pack 2 facing any supporting surface such as the floor surface of a work site or the top surface of a workbench.

[0094] In the left-right direction, the dimensions of the lighting device 1 are smaller than the dimensions of the battery pack 2. The left surface 3C of the housing 3 does not protrude leftward from the left surface 2L of the housing 2B of the battery pack 2. The right surface 3D of the housing 3 does not protrude rightward from the right surface 2R of the housing 2B of the battery pack 2. That is, the left surface 3C and the right surface 3D of the housing 3 perpendicular to the front surface 3A and the top surface 3E, respectively, do not protrude outward from the side surface of the housing 2B of the battery pack 2. Therefore, the lighting device 1 may be used in a state in which the left surface 2L of the battery pack 2 and the left surface 3C of the housing 3 are placed facing a support surface. The lighting device 1 may be used in a state in which the right surface 2R of the battery pack 2 and the right surface 3D of the housing 3 are placed facing a support surface. That is, the lighting device 1 may be used in a state in which it is tilted down from the state shown in FIG. 1, for example.

[0095] FIG. 11 is a perspective view showing a state in which the output terminal cover 9 according to the embodiment is opened. The output terminal cover 9 covers the output terminal 24. The output terminal cover 9 is disposed on the front surface 3A of the housing 3. In the embodiment, the output terminal 24 is a Universal Serial Bus (USB) terminal. The output terminal 24 can output power from the battery pack 2. For example, when an electronic device such as a mobile terminal has a rechargeable battery, the lighting device 1 can charge the rechargeable battery of the electronic device. By connecting the electronic device and the output terminal 24 via a USB cable, the rechargeable battery of the electronic device is charged by the power output from the battery pack 2 via the output terminal 24.

[0096] The output button 10 is operated by a user to switch between outputting and stopping power from the output terminal 24. The output button 10 is disposed on the front surface 3A of the housing 3. When the output button 10 is pressed once in a state where power is not being output from the output terminal 24, power is output from the output terminal 24 to a rechargeable battery of the electronic device via a USB cable, and charging of the rechargeable battery begins. When the output button 10 is pressed once in a state where power is being output from the output terminal 24, output of power from the output terminal 24 is stopped, and charging of the rechargeable battery is stopped. In the embodiment, a light-emitting element is built into the output button 10. During a period when power is being output from the output terminal 24, the light-emitting element of the output button 10 is turned on. During a period when power output from the output terminal 24 is stopped, the light-emitting element of the output button 10 is turned off.

[0097] Fig. 12 is a perspective view of the lighting device 1 to which the second transparent member 25 according to the embodiment is attached, seen from the right front. Fig. 13 is a perspective view of the second transparent member 25 and the lighting device 1 according to the embodiment, seen from the right front. Fig. 14 is a perspective view of the second transparent member 25 and the lighting device 1 according to the embodiment, seen from the left. Fig. 15 is a cross-sectional view showing a part of the lighting device 1 to which the second transparent member 25 according to the embodiment is attached.

[0098] The transparent member 20 may be covered with a second transparent member 25. The second transparent member 25 changes the color of the light emitted from the transparent member 20 and emits light of the changed color. The second transparent member 25 is made of a synthetic resin to which a colored pigment is added. The color of the second transparent member 25 is a warm color such as orange, yellow, or red. The second transparent member 25 emits warm light. The color of the second transparent member 25 does not have to be a warm color, but may be a cool color such as blue, or a medieval color such as green or purple. That is, the light emitted from the second transparent member 25 does not have to be a warm color, but may be a cool color such as blue, or a medieval color such as green or purple. The second transparent member 25 may have a dimming function to reduce the glare of the light emitted from the transparent member 20.

[0099] The second transparent member 25 has a hook portion 25A that is hooked onto at least a portion of the housing 3. The housing 3 has a lock portion 4A on which the second transparent member 25, which is arranged so as to cover the transparent member 20, is hooked. In the embodiment, the lock portion 4A is provided at the boundary between the housing 3 and the housing cover 4. By hooking the hook portion 25A onto the lock portion 4A, the second transparent member 25 is attached to the housing 3 so as to cover the transparent member 20. By disengaging the hook portion 25A from the lock portion 4A, the second transparent member 25 can be separated from the housing 3.

[0100] The first connecting portion 11 is provided on the rear surface 3B of the housing 3 opposite the front surface 3A. The first connecting portion 11 protrudes rearward from the rear surface 3B. The first connecting portion 11 is annular. An opening 11H of the first connecting portion 11 is formed so as to penetrate in the left-right direction. The first connecting portion 11 is made of synthetic resin.

[0101] The second connecting portion 12 is provided on the front surface 3A of the housing 3. The second connecting portion 12 protrudes forward from the front surface 3A. The second connecting portion 12 is annular. An opening 12H of the second connecting portion 12 is formed so as to penetrate in the up-down direction. The second connecting portion 12 is made of metal.

[0102] A hanging member 26 is attached to the first connecting portion 11 and the second connecting portion 12.

[0103] FIG. 16 is a diagram showing the lighting device 1 to which the hanging member 26 according to the embodiment is attached. In the example shown in FIG. 16, the hanging member 26 has a belt 26A attached to the first connecting portion 11 and a hook 26B connected to a part of the belt 26A. In the example shown in FIG. 16, a part of the belt 26A is attached to the first connecting portion 11, and a part of the belt 26A is attached to the second connecting portion 12. The belt 26A is attached to the first connecting portion 11 by being inserted into the opening 11H of the first connecting portion 11. The belt 26A is attached to the second connecting portion 12 by being inserted into the opening 12H of the second connecting portion 12. The hook 26B is hung on a structure 27 at the work site, so that the lighting device 1 and the battery pack 2 are hung from the structure 27 via the hanging member 26. The lighting device 1 can illuminate the target from above by being hung so that the second light transmitting portion 22 faces downward.

[0104] As described above, in the embodiment, the lighting device 1 includes the housing 3, the light-emitting elements 15 and 16 that operate with power supplied from the battery pack 2, and the transparent member 20 that is supported by the housing 3 and transmits at least a portion of the light from the light-emitting elements 15 and 16. The outer surfaces of the housing 3 include an upper surface 3E that is a first outer surface, and a front surface 3A that is a second outer surface that is adjacent to the upper surface 3E and faces in a different direction from the upper surface 3E. The transparent member 20 is disposed to span the upper surface 3E and the front surface 3A.

[0105] In the above configuration, since the transparent member 20 is disposed across the upper surface 3E and the front surface 3A of the housing 3, the light emitted from the light emitting elements 15 and 16 is irradiated to the space facing the upper surface 3E and the space facing the front surface 3A. Since the upper surface 3E and the front surface 3A face in different directions, the light emitted from the light emitting elements 15 and 16 is irradiated over a wide range. In addition, since the transparent member 20 is a single member, the light emitted from the light emitting elements 15 and 16 is efficiently irradiated around the transparent member 20. Therefore, the lighting device 1 can efficiently illuminate a wide range.

[0106] In the embodiment, the transparent member 20 includes a first light transmitting portion 21 adjacent to the upper surface 3E, a second light transmitting portion 22 adjacent to the front surface 3A, and a third light transmitting portion 23 connecting the first light transmitting portion 21 and the second light transmitting portion 22.

[0107] In the above configuration, the light emitted from the light-emitting element 15 and the light-emitting element 16 is efficiently irradiated to the surroundings of the transparent member 20 through each of the first light-transmitting portion 21, the second light-transmitting portion 22, and the third light-transmitting portion 23.

[0108] In the embodiment, the first light transmitting portion 21 has a flat plate shape. The second light transmitting portion 22 has a flat plate shape. The third light transmitting portion 23 is bent so as to connect the first light transmitting portion 21 and the second light transmitting portion 22.

[0109] In the above configuration, the light emitted from the light-emitting element 15 and the light-emitting element 16 is efficiently irradiated to the surroundings of the transparent member 20 through each of the first light-transmitting portion 21, the second light-transmitting portion 22, and the third light-transmitting portion 23.

[0110] In the embodiment, the emission surface 21B of the first light transmitting portion 21 is adjacent to the upper surface 3E and faces the same direction as the upper surface 3E. The emission surface 22B of the second light transmitting portion 22 is adjacent to the front surface 3A and faces the same direction as the front surface 3A. The emission surface 23B of the third light transmitting portion 23 is disposed so as to connect the emission surface 21B of the first light transmitting portion 21 and the emission surface 22B of the second light transmitting portion 22, and is curved in a cross section perpendicular to each of the emission surface 21B of the first light transmitting portion 21 and the emission surface 22B of the second light transmitting portion 22.

[0111] In the above configuration, the light emitted from the light-emitting element 15 and the light-emitting element 16 is efficiently irradiated to the surroundings of the transparent member 20 through each of the first light-transmitting portion 21, the second light-transmitting portion 22, and the third light-transmitting portion 23.

[0112] In the embodiment, the light emitting element 15 which is the first light emitting element faces the incident surface 21A of the first light transmitting portion 21. The light emitting element 16 which is the second light emitting element faces the incident surface 22A of the second light transmitting portion 22.

[0113] With the above configuration, the lighting device 1 can be easily assembled.

[0114] In the embodiment, the lighting device 1 includes a circuit board 13 which is a first board on which a light emitting element 15 is attached, and a circuit board 14 which is a second board on which a light emitting element 16 is attached. The circuit boards 13 and 14 are disposed so as to be perpendicular to each other in a cross section perpendicular to each of the emission surface 21B of the first light transmitting portion 21 and the emission surface 22B of the second light transmitting portion 22.

[0115] In the above configuration, the light-emitting element 15 and the light-emitting element 16 are each disposed in a position close to the third light-transmitting portion 23 which is a corner of the transparent member 20, and therefore the lighting device 1 can uniformly illuminate a wide range. The lighting device 1 can prevent, for example, the vicinity of the third light-transmitting portion 23 which is a corner of the transparent member 20 from becoming dark.

[0116] In the embodiment, the lighting device 1 includes a battery mounting section 5 provided in a housing 3, to which a battery pack 2 is attached.

[0117] In the above configuration, the light emitting element 15 and the light emitting element 16 are operated by power supplied from the battery pack 2 attached to the battery attachment portion 5.

[0118] In the embodiment, the housing 3 has a lock portion 4A to which a second transparent member 25 arranged to cover the transparent member 20 is hooked.

[0119] In the above configuration, the second transparent member 25 is fixed to the housing 3 .

[0120] In one or more embodiments, the transmissive member 20 is a diffusing member.

[0121] In the above configuration, since the transmissive member 20 is a diffusing member that diffuses at least a part of the light from the light emitting elements 15 and 16, the lighting device 1 can uniformly illuminate a wider range.

[0122] In the embodiment, the outer surface of the housing 3 includes a left surface 3C and a right surface 3D that are third outer surfaces perpendicular to the top surface 3E and the front surface 3A, respectively. The left surface 3C does not protrude to the left (outside) from the left surface 2L that is one side surface of the battery pack 2. The right surface 3D does not protrude to the right (outside) from the right surface 2R that is the other side surface of the battery pack 2.

[0123] In the above configuration, the lighting device 1 can be placed on a support surface so that the side surface of the battery pack 2 faces the support surface.

[0124] In the embodiment, the left surface 3C and the right surface 3D, which are the third outer surfaces, are adjacent to the upper surface 3E and the front surface 3A, respectively. The transparent member 20 is disposed so as not to extend over the left surface 3C and the right surface 3D.

[0125] In the above configuration, the light emitted from the light-emitting elements 15 and 16 is irradiated to the space facing the top surface 3E and the space facing the front surface 3A, but is not irradiated to the spaces facing the left surface 3C and the right surface 3D. Therefore, the light emitted from the light-emitting elements 15 and 16 is prevented from being irradiated to unnecessary spaces.

[0126] In the embodiment, the outer surface of the housing 3 includes a rear surface 3B disposed opposite the front surface 3A. The housing 3 has a first connection portion 11 provided on the rear surface 3B to which the hanging member 26 is attached.

[0127] In the above configuration, the housing 3 is suspended from the suspension member 26 so that the front surface 3A faces downward, whereby the light emitted from the light emitting elements 15 and 16 is irradiated into the space below the lighting device 1.

[0128] In the embodiment, the housing 3 has a second connecting portion 12 provided on the front surface 3A, to which the hanging member 26 is attached.

[0129] In the above configuration, the suspending member 26 can suspend the housing 3 more stably. [Explanation of symbols]

[0130] 1...illumination device, 2...battery pack, 2A...mounting surface, 2B...housing, 2C...slide portion, 2D...projection portion, 2E...release button, 2F...power terminal, 2G...signal terminal, 2L...left surface, 2R...right surface, 3...housing, 3A...front surface, 3B...rear surface, 3C...left surface, 3D...right surface, 3E...top surface, 3F...bottom surface, 3L...left housing, 3R...right housing, 3S...screw, 4...housing cover, 4A...lock portion, 5...battery mounting portion, 5B...guide portion, 5C...lock portion, 5D...power terminal, 5E...signal terminal, 6...illumination portion, 7...controller, 7A...switch element, 8...power button, 8A...button portion, 8B...rod portion, 8C...coil spring, 9...output terminal cover, 10...output force button, 11...first connecting portion, 11H...opening, 12...second connecting portion, 12H...opening, 13...circuit board, 14...circuit board, 15...light-emitting element (first light-emitting element), 16...light-emitting element (second light-emitting element), 17...heat sink, 17A...first support portion, 17B...second support portion, 18...reflector, 18S...screw, 19...reflector, 19S...screw, 20...transparent member, 21...first light-transmitting portion, 21A...incident surface, 21B...exiting surface, 22...second light-transmitting portion, 22A...incident surface, 22B...exiting surface, 23...third light-transmitting portion, 23A...incident surface, 23B...exiting surface, 24...output terminal, 25...second transparent member, 25A...hook portion, 26...hanging member, 26A...belt, 26B...hook, 27...structure.

Claims

1. A housing, a light-emitting element that operates by power supplied from a battery pack, and a transmissive member supported by the housing and through which at least part of the light from the light-emitting element passes, wherein an outer surface of the housing includes a first outer surface and a second outer surface adjacent to the first outer surface and facing in a direction different from that of the first outer surface, and the transmissive member is disposed so as to extend across the first outer surface and the second outer surface, A lighting device.

2. The transmissive member includes a first light transmissive portion adjacent to the first outer surface, a second light transmissive portion adjacent to the second outer surface, and a third light transmissive portion connecting the first light transmissive portion and the second light transmissive portion, The lighting device according to claim 1.

3. The first light transmissive portion is flat, The second light transmissive portion is flat, The third light transmissive portion is bent so as to connect the first light transmissive portion and the second light transmissive portion, The lighting device according to claim 2.

4. An emission surface of the first light transmissive portion is adjacent to the first outer surface and faces in the same direction as the first outer surface, An emission surface of the second light transmissive portion is adjacent to the second outer surface and faces in the same direction as the second outer surface, An emission surface of the third light transmissive portion is disposed so as to connect the emission surface of the first light transmissive portion and the emission surface of the second light transmissive portion, and is curved in a cross section orthogonal to each of the emission surface of the first light transmissive portion and the emission surface of the second light transmissive portion, The lighting device according to claim 3.

5. The light-emitting element includes a first light-emitting element facing an incident surface of the first light transmissive portion and a second light-emitting element facing an incident surface of the second light transmissive portion, The lighting device according to claim 2.

6. A first substrate to which the first light-emitting element is attached, and a second substrate to which the second light-emitting element is attached, wherein the first substrate and the second substrate are disposed orthogonally in a cross section orthogonal to each of the emission surface of the first light transmissive portion and the emission surface of the second light transmissive portion, The lighting device according to claim 5.

7. The housing is provided with a battery mounting portion to which the battery pack is mounted, The lighting device according to claim 1.

8. The battery mounting portion is provided on a lower surface of the housing, The battery pack is mounted on the battery mounting portion by being slid forward with respect to the battery mounting portion from behind the battery mounting portion, The first outer surface is an upper surface of the housing, The lighting device according to claim 7.

9. The second outer surface is the front surface of the housing. The lighting device according to claim 8.

10. The housing has a locking portion to which a second transmissive member is attached, the second transmissive member being arranged to cover the transmissive member. The lighting device according to claim 1.

11. The transmissive member is a diffusing member. The lighting device according to claim 1.

12. The outer surface of the housing includes a third outer surface orthogonal to each of the first outer surface and the second outer surface. The third outer surface does not protrude from the side surface of the battery pack. The lighting device according to claim 1.

13. The third outer surface is adjacent to each of the first outer surface and the second outer surface. The transmissive member does not extend over the third outer surface. The lighting device according to claim 12.

14. The outer surface of the housing includes a fourth outer surface disposed on the opposite side of the second outer surface. The housing has a first connecting portion provided on the fourth outer surface to which a suspension member is attached. The lighting device according to claim 1.

15. The housing has a second connecting portion provided on the second outer surface to which the suspension member is attached. The lighting device according to claim 14.

Images