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 lighting devices.

Background Art

[0002] In the technical field related to lighting devices, a portable electric lamp as disclosed in Patent Document 1 is known. In Patent Document 1, the portable electric lamp has a first light source and a second light source composed of LEDs.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a lighting device, it is required to efficiently illuminate a wide area.

[0005] The technology disclosed in this specification aims to efficiently illuminate a wide area.

Means for Solving the Problems

[0006] This specification discloses a lighting device. The lighting device may include a housing, a light-emitting element that operates by power supplied from a battery pack, and a transmissive member that is supported by the housing and through which at least a part of the light from the light-emitting element passes. The outer surface of the housing may include a first outer surface and a second outer surface that is adjacent to the first outer surface and faces in a different direction from the first outer surface. The transmissive member may be arranged so as to span the first outer surface and the second outer surface.

Effects of the Invention

[0007] [[ID=5X]] According to the technology disclosed in this specification, a wide area is efficiently illuminated.

Brief Description of the Drawings

[0008] [Figure 1] Figure 1 is a perspective view from the front right showing the lighting device and battery pack according to the embodiment. [Figure 2] Figure 2 is a perspective view from the left rear showing the lighting device and battery pack according to the embodiment. [Figure 3] Figure 3 is a right side view showing the lighting device and battery pack according to the embodiment. [Figure 4] Figure 4 is a top view showing a lighting device and battery pack according to an embodiment. [Figure 5] Figure 5 is a front view showing the lighting device and battery pack according to the embodiment. [Figure 6] Figure 6 is a perspective view from the front right showing the lighting device removed from the battery pack according to the embodiment. [Figure 7] Figure 7 is a bottom perspective view showing a lighting device according to an embodiment. [Figure 8] Figure 8 is an exploded perspective view from the front right showing the lighting device and battery pack according to the embodiment. [Figure 9] Figure 9 is a perspective cross-sectional view from the front right showing the lighting device and battery pack according to the embodiment. [Figure 10] Figure 10 is a side cross-sectional view showing a lighting device and battery pack according to an embodiment. [Figure 11] Figure 11 is a perspective view showing the output terminal cover in an open state according to the embodiment. [Figure 12] Figure 12 is a perspective view from the front right showing a lighting device equipped with the second transparent member according to the embodiment. [Figure 13] Figure 13 is a perspective view from the front right showing the second transmissive member and lighting device according to the embodiment. [Figure 14] Figure 14 is a left-side perspective view showing the second transmissive member and lighting device according to the embodiment. [Figure 15]FIG. 15 is a cross-sectional view showing a part of the lighting device to which the second transmissive member according to the embodiment is attached. [Figure 16] FIG. 16 is a view showing the lighting device to which the suspension member according to the embodiment is attached.

Embodiments for Carrying Out the Invention

[0009] In one or more embodiments, the lighting device may include a housing, a light-emitting element that operates by power supplied from a battery pack, and a transmissive member that is supported by the housing and through which at least a part of the light from the light-emitting element passes. The outer surface of the housing may include a first outer surface and a second outer surface that is adjacent to the first outer surface and faces in a different direction from the first outer surface. The transmissive member may be disposed so as to extend across the first outer surface and the second outer surface.

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

[0011] In one or more embodiments, the transmissive member may include 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.

[0012] In the above configuration, the light emitted from the light-emitting element is efficiently irradiated around the transmissive member through each of the first light transmissive portion, the second light transmissive portion, and the third light transmissive portion.

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

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

[0015] In one or more embodiments, the light emitting surface of the first light transmissive portion may be adjacent to the first outer surface and face the same direction as the first outer surface. The light emitting surface of the second light transmissive portion may be adjacent to the second outer surface and face the same direction as the second outer surface. The light emitting surface of the third light transmissive portion is arranged so as to connect the light emitting surface of the first light transmissive portion and the light emitting surface of the second light transmissive portion, and may be curved in a cross section orthogonal to each of the light emitting surface of the first light transmissive portion and the light emitting surface of the second light transmissive portion.

[0016] In the above configuration, the light emitted from the light emitting element is efficiently irradiated to the periphery of the transmissive member through each of the first light transmissive portion, the second light transmissive portion, and the third light transmissive 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] In the above configuration, the lighting device can be easily assembled.

[0019] In one or more embodiments, the lighting device may include 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. The first substrate and the second substrate may be arranged to be orthogonal in a cross section orthogonal to each of the light emitting surface of the first light transmissive portion and the light emitting surface of the second light transmissive portion.

[0020] In the above configuration, since the first and second light-emitting elements are positioned close to the third light-transmitting portion, which is the corner of the transmissive member, the lighting device can uniformly illuminate a wide area. The lighting device can suppress, for example, the darkening of the area near the third light-transmitting portion, which is the corner of the transmissive member.

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

[0022] In the above configuration, the light-emitting element operates using power supplied from a battery pack installed in the battery mounting section.

[0023] In one or more embodiments, the battery mounting section may be provided on the lower surface of the housing. The battery pack may be mounted in the battery mounting section by sliding it relative to the battery mounting section from the rear. The first outer surface may be the upper surface of the housing.

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

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

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

[0027] In one or more embodiments, the housing may have a locking portion onto which a second transparent member, which is positioned to cover the transparent member, is engaged.

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

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

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

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

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

[0033] In one or more embodiments, the third outer surface may be adjacent to the first and second outer surfaces, respectively. The permeable member may be arranged so as not to extend across the third outer surface.

[0034] In the above configuration, the light emitted from the light-emitting element irradiates the space facing the first outer surface and the space facing the second outer surface, but not the space facing the third space. Therefore, the irradiation of unnecessary spaces with light emitted from the light-emitting element is suppressed.

[0035] In one or more embodiments, the outer surface of the housing may include a fourth outer surface located opposite the second outer surface. The housing may have a first connecting portion provided on the fourth outer surface to which a 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, and the light emitted from the light-emitting element is directed into the space below the lighting device.

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

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

[0039] The embodiments of this disclosure will be described below with reference to the drawings, but this disclosure is not limited to these embodiments. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

[0040] In this embodiment, the positional relationships of each part will be described using the terms "front," "rear," "left," "right," "up," and "down." These terms indicate relative positions or directions with respect to the center of the lighting device 1. Furthermore, a virtual axis extending in the front-to-back direction will be appropriately referred to as the front-to-back axis, a virtual axis extending in the left-to-right direction will be appropriately referred to as the left-to-right axis, and a virtual axis extending in the up-to-down direction will be appropriately referred to as the up-to-down axis. The front-to-back axis and the left-to-right axis are orthogonal. The left-to-right axis and the up-to-down axis are orthogonal. The up-to-down axis and the front-to-back axis are orthogonal.

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

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

[0043] The user can use the lighting device 1 at the work site. For example, when work using power tools is performed at the work site, the lighting device 1 is used to illuminate the power tools or the work object. The lighting device 1 is used, for example, to brighten the user's hands.

[0044] The lighting device 1 comprises 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 houses at least a portion of the lighting unit 6 and the controller 7. The housing 3 is made of synthetic resin. ABS resin is an example of the synthetic resin used to form the housing 3.

[0046] The outer surface of housing 3 includes 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, rear surface 3B, left surface 3C, right surface 3D, top surface 3E, and bottom surface 3F is substantially planar. Front surface 3A faces forward. Rear surface 3B faces backward. Left surface 3C faces left. Right surface 3D faces left. Top surface 3E faces upward. Bottom surface 3F faces downward. Front surface 3A is substantially perpendicular to the front-to-back axis. Rear surface 3B slopes downward toward the rear. Left surface 3C is substantially perpendicular to the left-to-right axis. Right surface 3D is substantially perpendicular to the left-to-right axis. Top surface 3E is substantially perpendicular to the up-to-down axis.

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

[0048] Housing 3 includes a left housing 3L and a right housing 3R positioned to the right of the left housing 3L. The left housing 3L and the right housing 3R are fastened together by a number of screws 3S. Housing 3 consists of a pair of split housings.

[0049] The housing cover 4 covers at least a portion of the outer surface of the housing 3. The housing cover 4 is made of elastomer. In this embodiment, the housing cover 4 is positioned to cover a portion of the front surface 3A, a portion of the left surface 3C, a portion of the right surface 3D, and a portion of the top surface 3E. The housing cover 4 is positioned to cover 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 mounting section 5 is provided on the lower surface 3F of the housing 3. The battery pack 2 is mounted in the battery mounting section 5. The battery pack 2 can be attached to and detached from the battery mounting section 5. The battery pack 2 includes a rechargeable battery. A rechargeable lithium-ion battery is an example of a rechargeable battery. The battery pack 2 is a slide-type battery pack. The battery pack 2 is a battery pack for power tools.

[0051] The battery pack 2 includes a housing 2B having a mounting surface 2A, a pair of sliding parts 2C, a projection 2D movably supported by the housing 2B, a release button 2E for operating the projection 2D, a pair of power terminals 2F, and a pair of signal terminals 2G. The housing 2B has an internal space. Battery cells (not shown) are housed in the internal space of the housing 2B. The battery cells include rechargeable lithium-ion batteries. The sliding parts 2C extend in the front-rear direction. The projection 2D is movably supported by a spring. The projection 2D protrudes from the mounting surface 2A due to the elastic force of the spring. The power terminals 2F are located between the pair of sliding parts 2C. The signal terminals 2G are located between the pair of power terminals 2F.

[0052] The battery mounting section 5 includes a guide section 5B, a locking section 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 section 5B guides the battery pack 2 in a specified guide direction. The sliding section 2C of the battery pack 2 is guided by the guide section 5B. Two guide sections 5B are provided in the left-right direction. The guiding direction of the guide section 5B is the front-back direction.

[0055] The locking part 5C is provided on the lower surface 3F of the housing 3. The projection 2D of the battery pack 2 is hooked onto the locking part 5C. When the projection 2D is hooked onto the locking part 5C, the battery mounting part 5 and the battery pack 2 are fixed together. When the release button 2E is operated, the fixing between the battery mounting part 5 and the battery pack 2 is released.

[0056] Power terminal 5D is connected to power terminal 2F of battery pack 2. Signal terminal 5E is connected to signal terminal 2G of battery pack 2. Power is supplied from battery pack 2 to lighting device 1 by connecting power terminal 5D of battery mounting section 5 to power terminal 2F of battery pack 2.

[0057] When the battery pack 2 is installed in the battery mounting section 5, the user of the lighting device 1 brings the front end of the sliding 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 guided by the guide section 5B. The projection 2D of the battery pack 2 is hooked onto the locking section 5C of the battery mounting section 5, thereby fixing the battery pack 2 to the battery mounting section 5. In this way, the battery pack 2 is installed in the battery mounting section 5 by sliding it forward relative to the battery mounting section 5 from the rear. Power is also supplied from the battery pack 2 to the lighting device 1 by connecting the power terminal 2F of the battery pack 2 to the power terminal 5D of the battery mounting section 5.

[0058] When removing the battery pack 2 from the battery mounting section 5, the user of the lighting device 1 operates the release button 2E. When the release button 2E is operated, the projection 2D is released from the locking section 5C. When the projection 2D is released from the locking section 5C, the fixing between the battery mounting section 5 and the battery pack 2 is released. After the fixing between the battery mounting section 5 and the battery pack 2 is released, the battery pack 2 is slid backward and removed from the battery mounting section 5.

[0059] In the left-right direction, the dimensions of the lighting device 1 are smaller than the dimensions of the battery pack 2. When the battery pack 2 is mounted in the battery mounting section 5, the left side 3C of the housing 3 does not protrude to the left from the left side 2L of the housing 2B of the battery pack 2. The right side 3D of the housing 3 does not protrude to the right from the right side 2R of the housing 2B of the battery pack 2. In other words, the left side 3C and the right side 3D of the housing 3, which are perpendicular to the front side 3A and the top side 3E respectively, do not protrude outward from the side 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 the circuit board 13 and the circuit board 14 respectively, a reflector 18 positioned around a part of the light-emitting elements 15, a reflector 19 positioned around a part of the light-emitting elements 16, and a light-transmitting member 20 through which light emitted from at least one of the light-emitting elements 15 and the light-emitting elements 16 is transmitted.

[0061] Circuit board 13 is positioned so that its surface faces upward. Circuit board 14 is positioned so that its surface faces forward.

[0062] The light-emitting element 15 operates using power supplied from the battery pack 2. The light-emitting element 15 is mounted on the surface (top surface) of the circuit board 13. The light-emitting element 15 is a light-emitting diode (LED). The light-emitting surface of the light-emitting element 15 faces upward. Multiple light-emitting elements 15 are arranged with spacing between them in the left-right direction. In one embodiment, four light-emitting elements 15 are arranged at equal intervals in the left-right direction.

[0063] The light-emitting element 16 operates using power supplied from the battery pack 2. The light-emitting element 16 is mounted on the surface (front) of the circuit board 14. The light-emitting element 16 is a light-emitting diode (LED). The light-emitting surface of the light-emitting element 16 faces forward. Multiple light-emitting elements 16 are arranged with spacing between them in the left-right direction. In this 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 into the surroundings. The heat sink 17 is made of metal. Aluminum is an example of the metal used to form the heat sink 17. The heat sink 17 has a first support portion 17A connected to the back surface (bottom 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 light emitted from the light-emitting element 15. The reflector 19 reflects light emitted from the light-emitting element 16. Each of the reflector 18 and the reflector 19 has a body and a reflective film provided on the surface of the body. The body is made of, for example, polycarbonate resin. The reflective film is a metal film. Silver is an example of the metal that forms the reflective film. The reflective film is formed by plating the body. The surface of the reflective film of the reflector 18 is a reflective surface that reflects light emitted from the light-emitting element 15. The surface of the reflective film of the reflector 19 is a reflective surface that reflects light emitted from the light-emitting element 16.

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

[0067] The reflective surface of the reflector 19 is positioned to surround the multiple light-emitting elements 16. The reflective surface of the reflector 19 reflects light so that at least a portion of the light emitted from the light-emitting elements 16 travels forward. The reflector 19 is connected to the surface (front) 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 by two screws 18S. The reflector 19, the circuit board 14, and the second support portion 17B of the heat sink 17 are fixed together by two screws 19S. The circuit board 13, the circuit board 14, the heat sink 17, the reflector 18, and the reflector 19 are each 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 each fixed to the housing 3.

[0069] The light-transmitting member 20 is positioned to cover the light-emitting elements 15 and 16. The light-transmitting member 20 is light-transmitting. At least a portion of the light from the light-emitting elements 15 passes through the light-transmitting member 20. The light-transmitting member 20 is a diffuser that diffuses the light emitted from the light-emitting elements 15 into the surroundings. At least a portion of the light from the light-emitting elements 16 passes through the light-transmitting member 20. The light-transmitting member 20 is a diffuser that diffuses the light emitted from the light-emitting elements 16 into the surroundings. The light-transmitting member 20 protects each of the light-emitting elements 15 and 16.

[0070] The light-transmitting member 20 is made of a light-diffusing resin. Even when the light emitted from the light-emitting elements 15 and 16 has strong directionality, the light-transmitting member 20 suppresses the prominence of straight-line light and reduces brightness unevenness. The light-transmitting member 20 allows the lighting unit 6 to illuminate the surrounding area with a uniform illuminance distribution.

[0071] The transparent member 20 may be made of 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 positioned 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 to the left surface 3C and the right surface 3D.

[0074] The light-transmitting 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 section 21 has an incident surface 21A into which light from the light-emitting element 15 is incident, and an exit surface 21B into which light from the light-emitting element 15 is emitted. The first light-transmitting section 21 is substantially flat. The incident surface 21A and the exit surface 21B are substantially planar. 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 vertical axis. In this embodiment, as shown in Figure 5, the exit surface 21B is curved with its central part in the left-right direction slightly bulging upward.

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

[0077] The second light-transmitting section 22 has an incident surface 22A to which light from the light-emitting element 16 is incident, and an exit surface 22B to which light from the light-emitting element 16 is emitted. The second light-transmitting section 22 is substantially flat. The incident surface 22A and the exit surface 22B are substantially planar. 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 this embodiment, as shown in Figure 4, the exit surface 22B is curved with the central part in the left-right direction slightly bulging forward.

[0078] The incident surface 22A faces backward. The exit surface 22B faces forward. The exit surface 22B of the second light-transmitting section 22 is adjacent to the front surface 3A of the housing 3. The front surface 3A of the housing 3 is located in a part of the periphery of the exit surface 22B. The exit surface 22B of the second light-transmitting section 22 faces in the same direction as the front surface 3A of the housing 3.

[0079] The angle between the first light-transmitting section 21 and the second light-transmitting section 22 is substantially a right angle. The angle between the first light-transmitting section 21 and the second light-transmitting section 22 can be considered as the smaller of the angles between the incident surface 21A and the incident surface 22A, or the smaller of the angles between the ejection surface 21B and the ejection surface 22B.

[0080] The third light-transmitting section 23 has an incident surface 23A into which light from one or both of the light-emitting elements 15 and 16 enters, and an exit surface 23B into which light from one or both of the light-emitting elements 15 and 16 exits. The third light-transmitting section 23 is bent to connect the front end of the first light-transmitting section 21 and the upper end of the second light-transmitting section 22. The incident surface 23A of the third light-transmitting section 23 is positioned to connect the front end of the incident surface 21A of the first light-transmitting section 21 and the upper end of the incident surface 22A of the second light-transmitting section 22. The exit surface 23B of the third light-transmitting section 23 is positioned to connect the front end of the exit surface 21B of the first light-transmitting section 21 and the upper end of the exit surface 22B of the second light-transmitting section 22.

[0081] In cross-sections perpendicular to the incident surface 21A of the first light-transmitting section 21 and the incident surface 22A of the second light-transmitting section 22, the incident surface 23A of the third light-transmitting section 23 is curved. In cross-sections perpendicular to the incident surface 21A and the incident surface 22A, the incident surface 23A is an arc shape that is concave upward and forward.

[0082] In cross-sections perpendicular to the injection surface 21B of the first light-transmitting section 21 and the injection surface 22B of the second light-transmitting section 22, the injection surface 23B of the third light-transmitting section 23 is curved. In cross-sections perpendicular to the injection surface 21B and the injection surface 22B, the injection surface 23B is an arc that bulges upward and forward.

[0083] The light-emitting element 15 is positioned below the first light-transmitting section 21. The light-emitting element 15 faces the incident surface 21A of the first light-transmitting section 21. Light emitted from the light-emitting element 15 is incident on the incident surface 21A of the first light-transmitting section 21. Light incident on the incident surface 21A is emitted from the exit surface 21B of the first light-transmitting section 21. At least a portion 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 positioned behind the second light-transmitting section 22. The light-emitting element 16 faces the incident surface 22A of the second light-transmitting section 22. Light emitted from the light-emitting element 16 is incident on the incident surface 22A of the second light-transmitting section 22. Light incident on the incident surface 22A is emitted from the exit surface 22B of the second light-transmitting section 22. At least a portion of the light incident on the incident surface 22A is emitted from the exit surface 23B of the third light-transmitting section 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 mounted on the circuit board 13. The light-emitting element 16 is mounted on the circuit board 14. The circuit boards 13 and 14 are arranged to be orthogonal in cross-sections perpendicular to the ejection surface 21B of the first light-transmitting section 21 and the ejection surface 22B of the second light-transmitting section 22, respectively. The light-emitting element 15 is mounted on the top surface of the circuit board 13, which is the mounting surface. The light-emitting element 16 is mounted on the front surface of the circuit board 14, which is the mounting surface. The top surface of the circuit board 13 and the front surface of the circuit board 14 are substantially orthogonal in cross-sections perpendicular to the ejection surface 21B of the first light-transmitting section 21 and the ejection surface 22B of the second light-transmitting section 22, respectively.

[0087] Circuit board 13 and circuit board 14 may be placed in contact with each other. Alternatively, circuit board 13 and circuit board 14 may be placed with a gap between them that is less than or equal to the thickness of circuit board 13 and circuit board 14.

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

[0089] The power button 8 is operated by the user to turn the light-emitting elements 15 and 16 on or off. At least a portion of the power button 8 is located on the upper surface 3E of the housing 3. As shown in Figures 9 and 10, the power button 8 includes a button portion 8A located 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 located opposite 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 user presses the button portion 8A from above downward, the switch element 7A is pressed by the rod portion 8B. When the switch element 7A is pressed, the controller 7 turns the light-emitting elements 15 and 16 on or off. A coil spring 8C is located around the rod portion 8B. The coil spring 8C generates an elastic force that causes the power button 8 to move upward. When the user releases the operation of the power button 8, the power button 8 returns to its initial position due to the elastic force of the coil spring 8C.

[0090] The operation of the power button 8 includes both a short press (pressing the power button 8 for a short time) and a long press (pressing the power button 8 for a longer time).

[0091] When all lights are on, a short press of power button 8 switches from all lights on to the first light-up state. When the first light-up state is activated, a short press of power button 8 switches from the first light-up state to the second light-up state. When the second light-up state is activated, a short press of power button 8 switches from the second light-up state to the all-off state. When the power button 8 is pressed and held in any of the all-light-on, first light-up, or second light-up states, the lights switch to the all-off state.

[0092] When the power button 8 is briefly pressed once while all lights are off, the device switches from the all-lights-off state to one of the following states: all lights on, first light on, or second light on. The controller 7 remembers the state immediately preceding the all-lights-off state. For example, if the state immediately preceding the all-lights-off state was the all-lights-on state, then a brief press of the power button 8 while the device is off will switch the device from the all-lights-off state to the all-lights-on state. If the state immediately preceding the all-lights-off state was the first light on state, then a brief press of the power button 8 while the device is off will switch the device from the all-lights-off state to the first light on state. If the state immediately preceding the all-lights-off state was the second light on state, then a brief press of the power button 8 while the device is off will switch the device from the all-lights-off state to the second light on state.

[0093] As shown in Figures 1 to 11, the lighting device 1 may be used with the battery pack 2 positioned below the lighting device 1. The lighting device 1 may also be used with the bottom surface of the battery pack 2 facing any support surface, such as the floor of the 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 side 3C of the housing 3 does not protrude to the left from the left side 2L of the housing 2B of the battery pack 2. The right side 3D of the housing 3 does not protrude to the right from the right side 2R of the housing 2B of the battery pack 2. That is, the left side 3C and the right side 3D of the housing 3, which are perpendicular to the front side 3A and the top side 3E, respectively, do not protrude outward from the side of the housing 2B of the battery pack 2. Therefore, the lighting device 1 may be used in a state where, for example, the left side 2L of the battery pack 2 and the left side 3C of the housing 3 face the support surface. The lighting device 1 may be used in a state where, for example, the right side 2R of the battery pack 2 and the right side 3D of the housing 3 face the support surface. That is, the lighting device 1 may be used in a state tilted from the state shown in Figure 1, for example.

[0095] Figure 11 is a perspective view showing the output terminal cover 9 in an open state according to the embodiment. The output terminal cover 9 covers the output terminal 24. The output terminal cover 9 is located on the front surface 3A of the housing 3. In this 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, if 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 the user to switch between outputting and stopping power from the output terminal 24. The output button 10 is located on the front 3A of the housing 3. When the output button 10 is pressed once while power is not being output from the output terminal 24, power is output from the output terminal 24 to the rechargeable battery of the electronic device via the USB cable, and charging of the rechargeable battery begins. When the output button 10 is pressed once while power is being output from the output terminal 24, the output of power from the output terminal 24 is stopped, and charging of the rechargeable battery is stopped. In this embodiment, a light-emitting element is built into the output button 10. The light-emitting element of the output button 10 lights up while power is being output from the output terminal 24. The light-emitting element of the output button 10 turns off while power is not being output from the output terminal 24.

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

[0098] The light-transmitting member 20 may be covered by a second light-transmitting member 25. The second light-transmitting member 25 changes the color of the light emitted from the light-transmitting member 20 and emits light of the changed color. The second light-transmitting member 25 is made of synthetic resin to which a colored pigment has been added. The color of the second light-transmitting member 25 is, for example, a warm color such as orange, yellow, or red. The second light-transmitting member 25 emits warm-colored light. The color of the second light-transmitting member 25 does not have to be a warm color; it may be a cool color such as blue, or a neutral color such as green or purple. In other words, the light emitted from the second light-transmitting member 25 does not have to be warm-colored light; it may be a cool color such as blue, or a neutral color such as green or purple. The second light-transmitting member 25 may also have a light-reducing function to reduce the glare of the light emitted from the light-transmitting member 20.

[0099] The second transparent member 25 has a hook portion 25A that can be hooked onto at least a part of the housing 3. The housing 3 has a lock portion 4A onto which the second transparent member 25, which is positioned to cover the transparent member 20, is hooked. In this 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 mounted on the housing 3 so as to cover the transparent member 20. By releasing 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 in shape. The opening 11H of the first connecting portion 11 is formed 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 in shape. The opening 12H of the second connecting portion 12 is formed to penetrate in the vertical direction. The second connecting portion 12 is made of metal.

[0102] Suspension members 26 are attached to the first connecting portion 11 and the second connecting portion 12.

[0103] Figure 16 shows a lighting device 1 with a suspension member 26 attached according to an embodiment. In the example shown in Figure 16, the suspension member 26 has a belt 26A attached to a first connecting portion 11 and a hook 26B connected to a part of the belt 26A. In the example shown in Figure 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 lighting device 1 and battery pack 2 are suspended from the structure 27 at the work site via the suspension member 26 by the hook 26B being hung on the structure 27 at the work site. By suspending the lighting device 1 so that the second light-transmitting portion 22 faces downward, the lighting device 1 can illuminate the target from above.

[0104] As described above, in this embodiment, the lighting device 1 comprises a housing 3, light-emitting elements 15 and 16 that operate using power supplied from a battery pack 2, and a light-transmitting member 20 supported by the housing 3, through which at least a portion of the light from the light-emitting elements 15 and 16 is transmitted. The outer surface of the housing 3 includes a first outer surface, the upper surface 3E, and a second outer surface, the front surface 3A, adjacent to the upper surface 3E and facing in a different direction from the upper surface 3E. The light-transmitting member 20 is arranged to span the upper surface 3E and the front surface 3A.

[0105] In the above configuration, the transmissive member 20 is positioned so as to span the upper surface 3E and the front surface 3A of the housing 3. Therefore, the light emitted from the light-emitting elements 15 and 16 illuminates the space facing the upper surface 3E and the space facing the front surface 3A, respectively. Since the upper surface 3E and the front surface 3A face different directions, the light emitted from the light-emitting elements 15 and 16 illuminates a wide area. Furthermore, since the transmissive member 20 is a single component, the light emitted from the light-emitting elements 15 and 16 efficiently illuminates the area around the transmissive member 20. Consequently, the lighting device 1 can efficiently illuminate a wide area.

[0106] In this embodiment, the light-transmitting 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 around the transparent member 20 through the first light-transmitting section 21, the second light-transmitting section 22, and the third light-transmitting section 23, respectively.

[0108] In this embodiment, the first light-transmitting portion 21 is flat. The second light-transmitting portion 22 is flat. The third light-transmitting portion 23 is bent 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 around the transparent member 20 through the first light-transmitting section 21, the second light-transmitting section 22, and the third light-transmitting section 23, respectively.

[0110] In this embodiment, the ejection surface 21B of the first light-transmitting section 21 is adjacent to the upper surface 3E and faces the same direction as the upper surface 3E. The ejection surface 22B of the second light-transmitting section 22 is adjacent to the front surface 3A and faces the same direction as the front surface 3A. The ejection surface 23B of the third light-transmitting section 23 is positioned to connect the ejection surface 21B of the first light-transmitting section 21 and the ejection surface 22B of the second light-transmitting section 22, and is curved in cross-sections perpendicular to the ejection surface 21B of the first light-transmitting section 21 and the ejection surface 22B of the second light-transmitting section 22, respectively.

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

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

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

[0114] In this embodiment, the lighting device 1 includes a circuit board 13, which is a first substrate to which the light-emitting element 15 is attached, and a circuit board 14, which is a second substrate to which the light-emitting element 16 is attached. The circuit boards 13 and 14 are arranged orthogonally in cross-sections perpendicular to the ejection surface 21B of the first light-transmitting section 21 and the ejection surface 22B of the second light-transmitting section 22, respectively.

[0115] In the above configuration, since the light-emitting element 15 and the light-emitting element 16 are each positioned close to the third light-transmitting portion 23, which is the corner of the transmissive member 20, the lighting device 1 can uniformly illuminate a wide area. The lighting device 1 can suppress, for example, the darkening of the area near the third light-transmitting portion 23, which is the corner of the transmissive member 20.

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

[0117] In the above configuration, the light-emitting elements 15 and 16 are powered by electricity supplied from the battery pack 2 mounted in the battery mounting section 5.

[0118] In this embodiment, the housing 3 has a locking portion 4A onto which a second transparent member 25, which is positioned 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 permeable member 20 is a diffusing member.

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

[0122] In this embodiment, the outer surface of the housing 3 includes a left surface 3C and a right surface 3D, which 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 (outward) from the left surface 2L, which is one side of the battery pack 2. The right surface 3D does not protrude to the right (outward) from the right surface 2R, which is the other side of the battery pack 2.

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

[0124] In this embodiment, the third outer surfaces, the left surface 3C and the right surface 3D, are adjacent to the top surface 3E and the front surface 3A, respectively. The transparent member 20 is positioned so as not to extend across 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 illuminates the space facing the top surface 3E and the space facing the front surface 3A, but not the space facing the left surface 3C and the right surface 3D. Therefore, the illumination of unnecessary spaces with light emitted from the light-emitting elements 15 and 16 is suppressed.

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

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

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

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

[0130] 1...Lighting device, 2...Battery pack, 2A...Mounting surface, 2B...Housing, 2C...Slide part, 2D...Protrusion, 2E...Release button, 2F...Power terminal, 2G...Signal terminal, 2L...Left side, 2R...Right side, 3...Housing, 3A...Front, 3B...Rear, 3C...Left side, 3D...Right side, 3E...Top, 3F...Bottom, 3L...Left housing, 3R...Right housing, 3S...Screw, 4...Housing cover, 4A...Locking part, 5...Battery mounting part, 5B...Guide part, 5C...Locking part, 5D...Power terminal, 5E...Signal terminal, 6...Lighting part, 7...Controller, 7A...Switch element, 8...Power button, 8A...Button part, 8B...Rod part, 8C...Coil spring, 9...Output terminal cover, 10...Output Power button, 11...First connecting part, 11H...Opening, 12...Second connecting part, 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 part, 17B...Second support part, 18...Reflector, 18S...Screw, 19...Reflector, 19S...Screw, 20...Transmitting member, 21...First light-transmitting part, 21A...Incident surface, 21B...Ejection surface, 22...Second light-transmitting part, 22A...Incident surface, 22B...Ejection surface, 23...Third light-transmitting part, 23A...Incident surface, 23B...Ejection surface, 24...Output terminal, 25...Second transmitting member, 25A...Hook part, 26...Suspension member, 26A...Belt, 26B...Hook, 27...Structure.

Claims

1. Housing and A light-emitting element that operates using power supplied from a battery pack, A transparent member supported by the housing, through which at least a portion of the light from the light-emitting element is transmitted, The housing comprises a battery mounting section provided on the lower surface of the housing, on which the battery pack is mounted, The outer surface of the housing includes a first outer surface which is the upper surface of the housing, and a second outer surface which is adjacent to the first outer surface and is the front surface of the housing. The light-transmitting member is arranged to extend across the first outer surface and the second outer surface, and includes a first light-transmitting portion adjacent to the first outer surface and a second light-transmitting portion adjacent to the second outer surface. The emission surface of the first light-transmitting portion is adjacent to the first outer surface and faces the same direction as the first outer surface. The emission surface of the second light-transmitting portion is adjacent to the second outer surface and faces the same direction as the second outer surface. The light-emitting element includes a first light-emitting element facing the incident surface of the first light-transmitting portion and a second light-emitting element facing the incident surface of the second light-transmitting portion. The battery pack is mounted to the battery mounting portion by sliding it forward from the rear of the battery mounting portion relative to the battery mounting portion. Lighting device.

2. The light-transmitting member includes a third light-transmitting portion connecting the first light-transmitting portion and the second light-transmitting portion. The lighting device according to claim 1.

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

4. The ejection surface of the third light-transmitting portion is arranged to connect the ejection surface of the first light-transmitting portion and the ejection surface of the second light-transmitting portion, and is curved in cross-sections perpendicular to the ejection surface of the first light-transmitting portion and the ejection surface of the second light-transmitting portion, The lighting device according to claim 3.

5. A first substrate on which the first light-emitting element is attached, The device comprises a second substrate on which the second light-emitting element is attached, The first substrate and the second substrate are arranged so as to be orthogonal in cross-sections perpendicular to the ejection surface of the first light-transmitting portion and the ejection surface of the second light-transmitting portion, respectively. The lighting device according to claim 1.

6. The housing has a locking portion on which a second transparent member, which is positioned to cover the transparent member, is attached. The lighting device according to claim 1.

7. The aforementioned permeable member is a diffusing member. The lighting device according to claim 1.

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

9. The third outer surface is adjacent to the first outer surface and the second outer surface, The transparent member does not extend to the third outer surface. The lighting device according to claim 8.

10. The outer surface of the housing includes a fourth outer surface located opposite 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.

11. 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 10.

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