Lighting system, first light module, and second light module

Abstract

This light system comprises: a first light module that has a first housing, a module-receiving portion that is located in the first housing, a first light-emitting portion that is supported by the first housing, and an electric-power-source-receiving portion that is located in the first housing; and a second light module that has a second housing, an interface that is located in the second housing, and a second light-emitting portion that is supported by the second housing. The first light module and the second light module are mechanically and electrically coupled to each other by the module-receiving portion and the interface, and the second light module is supplied with electric power via the first light module.

Description

Technical Field

[0001] The technology disclosed in this specification relates to a lighting system, a first light module, and a second light module.

Background Art

[0002] In the technical field related to lighting devices, a lighting device as disclosed in Patent Document 1 is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] It is desired that the specifications of the lighting device can be arbitrarily changed according to the usage scene of the lighting device and the requirements of the user.

[0005] The technology disclosed in this specification aims to arbitrarily change the specifications of the lighting device.

Means for Solving the Problems

[0006] This specification discloses a lighting device. The lighting device may include a core having a battery mounting portion where a battery is detachable, a core mounting portion, and a first accessory mounting portion, a light connector portion detachable from the core mounting portion, a light unit having a light emitting portion that emits light based on power supplied from the battery through the core, an accessory connector portion detachable from the first accessory mounting portion, and an accessory having a contact portion that contacts a predetermined object.

Effects of the Invention

[0007] According to the technology disclosed in this specification, the specifications of the lighting device can be arbitrarily changed. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 shows a lighting system according to the first embodiment. [Figure 2] Figure 2 shows a lighting device according to the first embodiment. [Figure 3] Figure 3 is a perspective view showing a battery according to the first embodiment. [Figure 4] Figure 4 is a perspective view showing the core according to the first embodiment. [Figure 5] Figure 5 is a side view showing a light unit according to the first example. [Figure 6] Figure 6 is a perspective view showing a light unit according to the first example. [Figure 7] Figure 7 is a side view showing a light unit according to the second example. [Figure 8] Figure 8 is a perspective view showing a light unit according to the second example. [Figure 9] Figure 9 is a side view showing a light unit according to the third example. [Figure 10] Figure 10 is a perspective view showing a light unit according to the third example. [Figure 11] Figure 11 is a side view showing a light unit according to the fourth example. [Figure 12] Figure 12 is a perspective view showing a light unit according to the fourth example. [Figure 13] Figure 13 is a side view showing a light unit according to the fifth example. [Figure 14] Figure 14 is a perspective view showing a light unit according to the fifth example. [Figure 15] Figure 15 is a side view showing a light unit according to the sixth example. [Figure 16] Figure 16 is a perspective view showing a light unit according to the sixth example. [Figure 17] Figure 17 is a side view showing a light unit according to the seventh example. [Figure 18]FIG. 18 is a view showing an accessory according to the first example. [Figure 19] FIG. 19 is a view showing an accessory according to the second example. [Figure 20] FIG. 20 is a view showing an accessory according to the third example. [Figure 21] FIG. 21 is a view showing an accessory according to the fourth example. [Figure 22] FIG. 22 is a view showing an accessory according to the fifth example. [Figure 23] FIG. 23 is a view showing an accessory according to the sixth example. [Figure 24] FIG. 24 is a view showing an accessory according to the seventh example. [Figure 25] FIG. 25 is a view showing an accessory according to the eighth example. [Figure 26] FIG. 26 is a view showing an accessory according to the ninth example. [Figure 27] FIG. 27 is a side view showing an extension member according to the first embodiment. [Figure 28] FIG. 28 is a front view showing an extension member according to the first embodiment. [Figure 29] FIG. 29 is a view showing a lighting device including an option according to the first embodiment. [Figure 30] FIG. 30 is a view showing an option according to the first example. [Figure 31] FIG. 31 is a view showing an option according to the second example. [Figure 32] FIG. 32 is a view showing an option according to the third example. [Figure 33] FIG. 33 is a view showing a lighting device according to the first example. [Figure 34] FIG. 34 is a view showing a lighting device according to the second example. [Figure 35] FIG. 35 is a view showing a lighting device according to the third example. [Figure 36] FIG. 36 is a view showing a lighting device according to the fourth example. [Figure 37] FIG. 37 is a view showing a lighting device according to the fifth example. [Figure 38] Figure 38 shows a lighting device according to the sixth example. [Figure 39] Figure 39 shows a lighting device according to the seventh example. [Figure 40] Figure 40 shows a lighting device according to the eighth example. [Figure 41] Figure 41 shows a lighting device relating to the ninth example. [Figure 42] Figure 42 shows a lighting device according to the 10th example. [Figure 43] Figure 43 shows a lighting device according to the 11th example. [Figure 44] Figure 44 shows a lighting device relating to the 12th example. [Figure 45] Figure 45 shows a lighting device relating to the 13th example. [Figure 46] Figure 46 shows a lighting device relating to the 14th example. [Figure 47] Figure 47 shows a lighting device relating to the 15th example. [Figure 48] Figure 48 shows a lighting device relating to the 16th example. [Figure 49] Figure 49 shows a lighting device relating to the 17th example. [Figure 50] Figure 50 shows a lighting device relating to the 18th example. [Figure 51] Figure 51 is a block diagram showing a lighting device according to the first embodiment. [Figure 52] Figure 52 is a schematic diagram illustrating a lighting system according to another embodiment. [Figure 53] Figure 53 is a schematic diagram illustrating a lighting system according to another embodiment. [Figure 54] Figure 54 is a perspective view from the front left showing the lighting system according to the second embodiment. [Figure 55] Figure 55 is a perspective view from the right rear showing the light system according to the second embodiment. [Figure 56] Figure 56 is an exploded view of the light system according to the second embodiment, seen from the front. [Figure 57] Figure 57 is an exploded perspective view from the right rear showing a part of the light system according to the second embodiment. [Figure 58] Figure 58 is a perspective view from the front left showing the light system according to the third embodiment. [Figure 59] Figure 59 is an exploded view of the light system according to the third embodiment, seen from the front. [Figure 60] Figure 60 is a perspective view from the front left showing the light system according to the fourth embodiment. [Figure 61] Figure 61 is a perspective view from the right rear showing the light system according to the fourth embodiment. [Figure 62] Figure 62 is an exploded view of the light system according to the fourth embodiment, seen from the front. [Figure 63] Figure 63 is an exploded perspective view from the right rear showing a part of the light system according to the fourth embodiment. [Figure 64] Figure 64 is a perspective view from the front left showing the light system according to the fifth embodiment. [Figure 65] Figure 65 is a perspective view from the right rear showing the light system according to the fifth embodiment. [Figure 66] Figure 66 is an exploded perspective view from the right rear showing the light system according to the fifth embodiment. [Figure 67] Figure 67 is a perspective view from the right rear showing the base according to the fifth embodiment. [Figure 68] Figure 68 is a perspective view from the right rear showing a part of the lighting system according to the fifth embodiment. [Figure 69] Figure 69 is a perspective view from the front left showing the lighting system according to the fifth embodiment. [Figure 70] Figure 70 is a view of the lighting system according to the fifth embodiment, seen from the front. [Figure 71] Figure 71 is a perspective view from the front left showing the light system according to the sixth embodiment. [Figure 72] Figure 72 is a perspective view from the front left showing the lighting system according to the seventh embodiment. [Figure 73] Figure 73 is a perspective view from the front right showing the light system according to the eighth embodiment. [Figure 74] Figure 74 is a side view showing the lighting system according to the ninth embodiment. [Modes for carrying out the invention]

[0009] In one or more embodiments, the lighting device may include a core having a battery mounting portion into which a battery is attached and detached, a core mounting portion, and a first accessory mounting portion; a light unit having a light connector portion attached to and detached from the core mounting portion, and a light-emitting portion that emits light based on power supplied from the battery via the core; and an accessory having an accessory connector portion attached to and detached from the first accessory mounting portion, and a contact portion that contacts a predetermined object.

[0010] In the above configuration, the specifications of the lighting device can be arbitrarily changed according to the usage scenario and user requirements by changing at least one of the types of light units and accessories. Since the light connectors of multiple light units are standardized, multiple types of light units can be swapped with a single core. Since the accessory connectors of multiple accessories are standardized, multiple types of accessories can be swapped with a single core.

[0011] In one or more embodiments, the core may have a plurality of first accessory mounting portions.

[0012] In the above configuration, multiple accessories can be attached to a single core simultaneously, allowing the specifications of the lighting device to be arbitrarily changed according to the usage scenario and user requirements.

[0013] In one or more embodiments, the light unit may have a second accessory mounting portion to which an accessory connector portion is attached and detached.

[0014] In the above configuration, accessories can be attached to the light unit, allowing the specifications of the lighting device to be arbitrarily changed according to the usage scenario and user requirements. Since the accessory connectors of multiple accessories are standardized, multiple types of accessories can be swapped with a single light unit.

[0015] In one or more embodiments, the light-emitting section may have a cylindrical light-emitting section.

[0016] With the above configuration, a 360-degree range can be illuminated around the light unit.

[0017] In one or more embodiments, the light-emitting section may have a ring-shaped light-emitting section.

[0018] In the above configuration, the object is illuminated with ring-shaped lighting.

[0019] In one or more embodiments, the light unit may have a light support portion that rotatably supports a light-emitting portion. The light connector portion may be provided on the light support portion.

[0020] In the above configuration, the light-emitting part can be rotated while the light support is attached to the core, so that the illumination light emitted from the light-emitting part can be supplied in any direction.

[0021] In one or more embodiments, the lighting device may have an optional mounting section to which a light connector is attached and detached, and an optional connector section to which a core mounting section is attached and detached, and may include an option to send power supplied from a battery via the core to the light unit.

[0022] In the above configuration, an option that functions as a power relay device is interposed between the light unit and the core, allowing the specifications of the lighting device to be arbitrarily changed according to the usage scenario and user requirements. By standardizing the option connectors of multiple options, multiple types of options can be swapped with a single core. Similarly, by standardizing the light connectors of multiple light units, multiple types of light units can be swapped with a single option.

[0023] In one or more embodiments, the option may include a third accessory mounting portion to which the accessory connector portion is attached and detached.

[0024] In the above configuration, by attaching accessories to the options, the specifications of the lighting device can be arbitrarily changed according to the usage scenario and user requirements. Since the accessory connectors of multiple accessories are standardized, multiple types of accessories can be exchanged for a single option.

[0025] In one or more embodiments, the option may have a base portion and an option support portion rotatably supported on the base portion. An option connector portion may be provided on the base portion. An option mounting portion may be provided on the option support portion.

[0026] In the above configuration, the light unit attached to the optional support can be rotated while the base is attached to the core, so that the illumination light emitted from the light-emitting part can be supplied in any direction.

[0027] In one or more embodiments, the light unit may have a light support portion that rotatably supports a light-emitting portion. The light connector portion may be provided on the light support portion.

[0028] In the above configuration, the light unit mounted on the optional support can be rotated while the base is attached to the core. Furthermore, since the light-emitting part of the light unit can be rotated further, the illumination light emitted from the light-emitting part can be supplied in any direction.

[0029] In one or more embodiments, the option may include a first base portion, a second base portion rotatably supported on the first base portion, and an option support portion rotatably supported on the second base portion. The option connector portion may be provided on the first base portion, and the option mounting portion may be provided on the option support portion.

[0030] In the above configuration, since the option has at least two rotating parts, the light-emitting part of the light unit attached to the option support can be directed in any direction while the first base part is attached to the core. Therefore, the illumination light emitted from the light-emitting part can be supplied in any direction.

[0031] In one or more embodiments, the option may have a base portion and an option support portion connected to the base portion via a cable. An option connector portion may be provided on the base portion. An option mounting portion may be provided on the option support portion.

[0032] In the above configuration, the base unit attached to the core and the optional support unit to which the light unit is attached are connected via a cable, so that lighting devices with specifications that suit the usage scenario and user requirements can be provided.

[0033] In one or more embodiments, the optional connector portion may be attached to or detached from the optional mounting portion of another option.

[0034] In the above configuration, the specifications of the lighting device can be arbitrarily changed according to the usage scenario and user requirements.

[0035] In one or more embodiments, the option may include a handle.

[0036] In the above configuration, a handle that the user can grip is provided as an option, so that lighting devices with specifications that suit the usage scenario and user requirements can be provided.

[0037] In one or more embodiments, the accessory may be hung on the object.

[0038] In the above configuration, by attaching accessories to the target, lighting devices are provided with specifications that meet the usage scenario and user requirements of the lighting device.

[0039] In one or more embodiments, the accessory may clamp the object.

[0040] In the above configuration, the accessory clamps onto the object, providing a lighting device with specifications tailored to the usage scenario and user requirements.

[0041] In one or more embodiments, the accessory may be supported by the subject.

[0042] In the above configuration, the accessories are supported by the target, providing a lighting device with specifications that meet the usage scenario and user requirements of the lighting device.

[0043] In one or more embodiments, the accessory may be attached to the object.

[0044] In the above configuration, the accessory attaches to the target, providing a lighting device with specifications that meet the usage scenario and user requirements.

[0045] In one or more embodiments, the accessory may be wrapped around the object.

[0046] In the above configuration, by wrapping the accessories around the object, a lighting device with specifications tailored to the usage scenario and user requirements of the lighting device is provided.

[0047] In one or more embodiments, the accessory may have a screw hole into which a screw is inserted.

[0048] In the above configuration, screw holes into which screws are inserted are provided in the accessories, thereby providing lighting devices with specifications that suit the usage scenario and user requirements. For example, if the object is a tripod with screws, the lighting device is fixed to the tripod via the accessories.

[0049] In one or more embodiments, the lighting device may include an extension member having an extension mounting portion that is attached to and detached from an accessory connector portion, and a core holding portion that holds a core.

[0050] In the above configuration, the accessories are connected to the core via extension members, so that lighting devices with specifications tailored to the usage scenario and user requirements are provided.

[0051] In one or more embodiments, the battery interface and the core mounting interface may be different.

[0052] In the above configuration, since electrical equipment capable of holding a battery cannot be directly attached to the core, it is prevented from attaching electrical equipment other than the light unit or options to the core.

[0053] In one or more embodiments, the lighting device may include a first power switch provided in the light unit, which is operated to switch the light-emitting part on and off.

[0054] In the above configuration, the light unit is equipped with a first power switch, allowing the user to switch the light-emitting part on and off in various usage situations.

[0055] In one or more embodiments, the lighting device may include a second power switch located in the core, which is operated to switch the light-emitting portion on and off.

[0056] In the above configuration, the light unit is equipped with a first power switch, and the core is equipped with a second power switch, allowing the user to switch the light-emitting part on and off in various usage situations.

[0057] In one or more embodiments, the lighting device may include a function switch provided in the core and operated to change the function of a light unit, and a controller that changes the function of the light unit based on an operating signal from the function switch and identification data of the light unit mounted on the core mounting portion.

[0058] In the above configuration, the function of the light unit can be arbitrarily changed according to the type of light unit simply by operating the function switch located on the core. This improves the convenience of the lighting device.

[0059] In one or more embodiments, the battery may be a power tool battery.

[0060] In the above configuration, users of power tools and power tool batteries can secure power for the lighting device.

[0061] 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.

[0062] First embodiment. The first embodiment will be described.

[0063] [Lighting System] Figure 1 shows a lighting system 100 according to an embodiment. The lighting system 100 comprises a battery 2, a core 3, multiple types of light units 4, multiple types of accessories 5, and multiple types of options 6. The battery 2 functions as the power source for the lighting system 100. The battery 2 is attached to and detached from the core 3. The core 3 is the core device of the lighting system 100. The light units 4 are the light-emitting devices of the lighting system 100. The light units 4 are attached to and detached from the core 3. Power from the battery 2 is supplied to the light units 4 via the core 3. The accessories 5 are contact devices that come into contact with a predetermined object. The accessories 5 are attached to and detached from the core 3, the light units 4, and the options 6, respectively. The accessories 5 are connected to or supported by an object. No power is supplied to the accessories 5. The accessories 5 are not energized. The options 6 are power relay devices between the core 3 and the light units 4. The options 6 are attached to and detached from the core 3. When option 6 is attached to core 3, the light unit 4 is attached to option 6. Power from battery 2 is supplied to the light unit 4 via core 3 and option 6.

[0064] Each of the multiple types of light units 4 can be attached to and detached from the core 3. Each of the multiple types of accessories 5 can be attached to and detached from the core 3. Each of the multiple types of accessories 5 can be attached to and detached from the light unit 4. Each of the multiple types of accessories 5 can be attached to and detached from the option 6. Each of the multiple types of option 6 can be attached to and detached from the core 3. Each of the multiple types of light units 4 can be attached to and detached from the option 6. In the lighting system 100, the combination of light units 4, accessories 5 and option 6 to the battery 2 and core 3 can be changed as desired. The user of the lighting system 100 can change the combination of light units 4, accessories 5 and option 6 as desired depending on the usage scenario and requirements.

[0065] [Lighting equipment] Figure 2 shows a lighting device 1 according to an embodiment. As shown in Figure 2, the lighting device 1 comprises a core 3, a light unit 4, and an accessory 5. In the example shown in Figure 2, the lighting device 1 does not include option 6.

[0066] The core 3 includes a base portion 31, a battery mounting portion 32 into which the battery 2 is attached and detached, a core mounting portion 33 into which the light unit 4 is attached and detached, a first accessory mounting portion 34 into which the accessory 5 is attached and detached, a power switch 35, and a function switch 36.

[0067] The light unit 4 includes a light support portion 41, a light-emitting portion 42 that emits light based on power supplied from the battery 2 via the core 3, a light connector portion 46 that is attached to and detached from the core mounting portion 33, and a power switch 47. In the example shown in Figure 2, the light connector portion 46 is provided on the light support portion 41. The light support portion 41 rotatably supports the light-emitting portion 42 via a rotating portion 45. The light-emitting portion 42 includes a housing portion 43 and a light-emitting portion 44 supported by the housing portion 43.

[0068] The accessory 5 has a contact portion 51 that contacts a predetermined object and an accessory connector portion 52 that is attached to and detached from the first accessory mounting portion 34.

[0069] The interface of the light connector portion 46 of multiple light units 4 is identical. In other words, the light connector portion 46 of multiple light units 4 is standardized. Each of the multiple types of light units 4 shown in Figure 1 is attached to and detached from the core mounting portion 33 of a single core 3. Because the light connector portion 46 of multiple light units 4 is standardized, one of multiple types of light units 4 can be attached to a single core mounting portion 33 of the core 3. The light units 4 are interchangeable with respect to the core 3.

[0070] The accessory connector portion 52 of multiple accessories 5 is identical in structure. In other words, the accessory connector portion 52 of multiple accessories 5 is standardized. Each of the multiple types of accessories 5 shown in Figure 1 is attached to and detached from the first accessory mounting portion 34 of a single core 3. Because the accessory connector portion 52 of multiple accessories 5 is standardized, multiple types of accessories 5 can be attached one by one to a single first accessory mounting portion 34 of the core 3. The accessories 5 are interchangeable with respect to the core 3.

[0071] In this embodiment, the specifications of the lighting device 1 can be arbitrarily changed according to the usage scenario and user requirements by changing at least one of the type of light unit 4 attached to the core 3 and the type of accessory 5 attached to the core 3.

[0072] Core 3 may have multiple first accessory mounting sections 34. Core 3 may have two, three, or four first accessory mounting sections 34. In the example shown in Figure 2, one first accessory mounting section 34 is provided on the first side of the front base section 31, one on the second side of the base section 31 opposite the first side, and one on the rear surface of the base section 31 that intersects the first and second sides, respectively. That is, in the example shown in Figure 2, Core 3 has three first accessory mounting sections 34. By providing multiple first accessory mounting sections 34 on Core 3, multiple accessories 5 can be attached to one Core 3 simultaneously, so the specifications of the lighting device 1 can be arbitrarily changed according to the usage scenario and user requirements of the lighting device 1.

[0073] The power switch 47 provided on the light unit 4 is operated to switch the light-emitting section 42 on and off. By providing the power switch 47 on the light unit 4, the user can switch the light-emitting section 42 on and off in various usage situations.

[0074] The power switch 35 located on the core 3 is operated to switch the light-emitting section 42 on and off. With the power switch 47 on the light unit 4 and the power switch 35 on the core 3, the user can switch the light-emitting section on and off in various usage scenarios.

[0075] A function switch 36 located on the core 3 is operated to change the function of the light unit 4. The function of the light unit 4 includes at least one of the color (color temperature), brightness, and emission state of the light emitted from the light-emitting part 42 of the light unit 4. By operating the function switch 36, for example, the light emitted from the light-emitting part 42 is switched between warm-colored light, cool-colored light, and neutral-colored light. By operating the function switch 36, for example, the intensity of the light emitted from the light-emitting part 42 is adjusted. By operating the function switch 36, for example, the emission state of the light emitted from the light-emitting part 42 is switched between a steady-on state and a flashing state.

[0076] The function of the light unit 4 can be arbitrarily changed simply by operating the function switch 36 located on the core 3. This improves the convenience of the lighting device 1.

[0077] [Battery and core mounting section] Figure 3 is a perspective view showing a battery 2 according to an embodiment. Battery 2 functions as a power source for the lighting device 1. In this embodiment, battery 2 is a power tool battery. Examples of power tools include an impact driver, a driver drill, and an angle drill. Since battery 2 is a power tool battery, users of power tools and power tool batteries can secure power for the lighting device 1.

[0078] Battery 2 includes a secondary battery. In an embodiment, battery 2 includes a rechargeable lithium-ion battery. By being mounted in the battery mounting section 32, battery 2 can supply power to the light unit 4 via the core 3.

[0079] As shown in Figure 3, the battery 2 includes a housing 22 having a mounting surface 21 that can face the mounting surface of the battery mounting portion 32, a pair of rails 23 provided on the mounting surface 21, a projection 24 that is movably supported on the housing 22, and a release button 25 for operating the projection 24.

[0080] The housing 22 has an internal space. Battery cells are housed in the internal space of the housing 22. The battery cells are rechargeable lithium-ion batteries.

[0081] The rail 23 extends in the sliding direction. The rail 23 is guided by a guide provided on the battery mounting section 32.

[0082] The projection 24 protrudes from the mounting surface 21. The projection 24 is supported so as to be movable by a spring. The projection 24 protrudes from the mounting surface 21 due to the elastic force of the spring. The projection 24 can be inserted into a locking hole provided in the battery mounting section 32. When the projection 24 is inserted into the locking hole, the battery mounting section 32 and the battery 2 are fixed together.

[0083] The release button 25 is operated to release the fixation between the battery mounting section 32 and the battery 2.

[0084] When attaching battery 2 to battery mounting section 32, the user brings the tip of rail 23 into contact with the guide portion of battery mounting section 32, and then slides battery 2 relative to battery mounting section 32. Battery 2 moves in the sliding direction while being guided by the guide portion. Battery 2 is fixed to battery mounting section 32 when projection 24 is inserted into the locking hole of battery mounting section 32. This completes the attachment of battery 2 to battery mounting section 32.

[0085] When removing battery 2 from battery mounting section 32, the user operates the release button 25. When the release button 25 is operated, the projection 24 is withdrawn from the lock hole. When the projection 24 is withdrawn from the lock hole, the fixing between battery mounting section 32 and battery 2 is released. After the fixing between battery mounting section 32 and battery 2 is released, battery 2 is slid out, and battery 2 is removed from battery mounting section 32.

[0086] The battery 2 also has a pair of power terminals 26 and a communication terminal 27 located between the pair of power terminals 26. The power terminals 26 are located between a pair of rails 23. One of the power terminals 26 is a positive power terminal. The other power terminal 26 is a negative power terminal. Power is supplied from the battery 2 to the core 3 by connecting the power terminals 26 of the battery 2 to the power terminals provided on the mounting surface of the battery mounting section 32.

[0087] Figure 4 is a perspective view showing a core 3 according to an embodiment. The core 3 supplies power output from the battery 2 to the light unit 4. The core 3 has a base portion 31, a core mounting portion 33, and a first accessory mounting portion 34. As described above, the first accessory mounting portion 34 is provided on the first side, second side, and rear surface of the base portion 31, respectively.

[0088] The core mounting portion 33 is provided on the base portion 31 and has a mounting surface 311 that can face the connector surface of the light connector portion 46, a pair of rails 313 provided on the mounting surface 311, a projection 314 that is movably supported on the base portion 31, and a release button 315 for operating the projection 314.

[0089] The rail 313 extends in the sliding direction. The rail 313 is guided by a guide provided on the light connector section 46.

[0090] The projection 314 protrudes from the mounting surface 311. The projection 314 is supported so as to be movable by a spring. The projection 314 protrudes from the mounting surface 311 due to the elastic force of the spring. The projection 314 can be inserted into a locking hole provided in the light connector portion 46. When the projection 314 is inserted into the locking hole, the light connector portion 46 and the core mounting portion 33 are fixed together.

[0091] The release button 315 is operated to release the locking between the light connector portion 46 and the core mounting portion 33.

[0092] When attaching the light connector section 46 to the core mounting section 33, the user brings the tip of the rail 313 into contact with the guide section of the light connector section 46, and then slides the core mounting section 33 relative to the light connector section 46. The core mounting section 33 moves in the sliding direction, guided by the guide section. The core mounting section 33 is fixed to the light connector section 46 when the projection 314 is inserted into the locking hole of the light connector section 46. This attaches the core mounting section 33 to the light connector section 46.

[0093] When removing the light connector part 46 from the core mounting part 33, the user operates the release button 315. When the release button 315 is operated, the projection 314 is removed from the lock hole. When the projection 314 is removed from the lock hole, the fixing between the light connector part 46 and the core mounting part 33 is released. After the fixing between the light connector part 46 and the core mounting part 33 is released, the core mounting part 33 slides, and the core mounting part 33 is removed from the light connector part 46.

[0094] The core mounting section 33 also has a pair of power terminals 316 and a communication terminal 317 positioned between the pair of power terminals 316. The power terminals 316 are positioned between a pair of rails 313. One of the power terminals 316 is a positive power terminal. The other power terminal 316 is a negative power terminal. Power is supplied from the core mounting section 33 to the light unit 4 by connecting the power terminals 316 of the core mounting section 33 to the power terminals provided on the mounting surface of the light connector section 46.

[0095] The interface of battery 2 and the interface of core mounting section 33 are different. The interface of battery 2 refers to the structure or dimensions of the part of battery 2 that is mounted on battery mounting section 32. The interface of core mounting section 33 refers to the structure or dimensions of the part of core 3 that is mounted on light connector section 46. For example, the spacing between the pair of rails 23 of battery 2 is different from the spacing between the pair of rails 313 of core mounting section 33. For example, the length of the rails 23 of battery 2 is different from the length of the rails 313 of core mounting section 33. For example, the spacing between the pair of power terminals 26 of battery 2 is different from the spacing between the pair of power terminals 316 of core mounting section 33. For example, the shape of the pair of power terminals 26 of battery 2 is different from the shape of the pair of power terminals 316 of core mounting section 33.

[0096] Because the interface of battery 2 and the interface of core mounting section 33 are different, although the light unit 4 can be attached to core 3, it cannot be directly attached to battery 2. Also, power tools that can be attached to battery 2 cannot be attached to core 3. In other words, only the light unit 4 or option 6 can be attached to core 3. This prevents other electrical devices, such as power tools, from being attached to core 3.

[0097] [Light Unit] The following describes an example of the light unit 4. Figure 5 is a side view showing the light unit 4A according to the first example. Figure 6 is a perspective view showing the light unit 4A according to the first example. The light unit 4A includes a headlight. The light unit 4A has a light support part 41A, a light-emitting part 42A that emits light based on power supplied from the battery 2 via the core 3, a light connector part 46A that is attached to and detached from the core mounting part 33, and a power switch 47A. The light connector part 46A is provided on the light support part 41A. The light support part 41A rotatably supports the light-emitting part 42A via a rotating part 45A. The light-emitting part 42A rotates around the rotation axis HX of the rotating part 45A. The light-emitting part 42A includes a housing part 43A and a light-emitting part 44A supported by the housing part 43A. The light-emitting part 44A is substantially circular in shape. The power switch 47A is provided on the housing part 43A.

[0098] In the above configuration, the light-emitting unit 42A can be rotated while the light support unit 41A is attached to the core 3, so that the illumination light emitted from the light-emitting unit 44A of the light-emitting unit 42A can be supplied in any direction.

[0099] Figure 7 is a side view showing a light unit 4B according to the second example. Figure 8 is a perspective view showing a light unit 4B according to the second example. The light unit 4B includes a work light. The light unit 4B has a light support portion 41B, a light-emitting portion 42B that emits light based on power supplied from the battery 2 via the core 3, a light connector portion 46B that is attached to and detached from the core mounting portion 33, and a power switch 47B. The light connector portion 46B is provided on the light support portion 41B. The light-emitting portion 42B includes a housing portion 43B and a light-emitting portion 44B supported by the housing portion 43B. The housing portion 43B includes a first housing portion 431B and a second housing portion 432B supported by the first housing portion 431B. The light-emitting portion 44B is supported by the second housing portion 432B. The light-emitting portion 44B is elongated in a predetermined direction. The light support portion 41B rotatably supports the first housing portion 431B via the rotating portion 45B. The first housing portion 431B rotates around the rotation axis HX of the rotating portion 45B. The second housing portion 432B rotates around the rotation axis VX. The rotation axis HX and the rotation axis VX are orthogonal. The power switch 47B is provided on the first housing portion 431B.

[0100] In the above configuration, since the light unit 4B has two pivot axes HX and VX, the light emitter 44B can be directed in any direction while the light support 41B is mounted on the core 3. Therefore, the illumination light emitted from the light emitter 44B can be supplied in any direction.

[0101] Figure 9 is a side view showing a light unit 4C according to the third example. Figure 10 is a perspective view showing a light unit 4C according to the third example. The light unit 4C includes a ring light. The light unit 4C has a light support part 41C, a light-emitting part 42C that emits light based on power supplied from the battery 2 via the core 3, a light connector part 46C that is attached to and detached from the core mounting part 33, and a power switch 47C. The light connector part 46C is provided on the light support part 41C. The light support part 41C rotatably supports the light-emitting part 42C via a rotating part 45C. The light-emitting part 42C rotates around the rotation axis HX of the rotating part 45C. The light-emitting part 42C includes a housing part 43C and a light-emitting part 44C supported by the housing part 43C. The light-emitting part 44C is ring-shaped. The power switch 47C is provided on the housing part 43C.

[0102] In the above configuration, since the light-emitting unit 42C has a ring-shaped light-emitting unit 44C, the object is illuminated in an annular pattern. Furthermore, since the light-emitting unit 42C can be rotated while the light support unit 41C is attached to the core 3, the illumination light emitted from the light-emitting unit 42C's light-emitting unit 44C can be supplied in any direction.

[0103] Figure 11 is a side view showing a light unit 4D according to the fourth example. Figure 12 is a perspective view showing a light unit 4D according to the fourth example. The light unit 4D includes a flashlight. The light unit 4D has a light support portion 41D, a light-emitting portion 42D that emits light based on power supplied from the battery 2 via the core 3, a light connector portion 46D that is attached to and detached from the core mounting portion 33, and a power switch 47D. The light connector portion 46D is provided on the light support portion 41D. The light support portion 41D rotatably supports the light-emitting portion 42D via a rotating portion 45D. The light-emitting portion 42D rotates around the rotation axis HX of the rotating portion 45D. The light-emitting portion 42D includes a housing portion 43D, a light-emitting portion 44D supported by the housing portion 43D, and a lighting range adjustment ring 48. The light-emitting portion 44D is substantially circular in shape. The power switch 47D is located in the housing section 43D.

[0104] In the above configuration, the illumination range of the illumination light emitted from the light emission unit 44D is adjusted by rotating the illumination range adjustment ring 48. Furthermore, since the light emission unit 42D can be rotated while the light support unit 41D is attached to the core 3, the illumination light emitted from the light emission unit 44D of the light emission unit 42D can be supplied in any direction.

[0105] Figure 13 is a side view showing a light unit 4E according to the fifth example. Figure 14 is a perspective view showing a light unit 4E according to the fifth example. The light unit 4E includes a work light. The light unit 4E has a light support part 41E, a light-emitting part 42E that emits light based on power supplied from the battery 2 via the core 3, a light connector part 46E that is attached to and detached from the core mounting part 33, and a power switch 47E. The light connector part 46E is provided on the light support part 41E. The light support part 41E rotatably supports the light-emitting part 42A via a rotating part 45E. The light-emitting part 42E rotates around the rotation axis HX of the rotating part 45E. The light-emitting part 42E includes a housing part 43E and a light-emitting part 44E supported by the housing part 43E. The light-emitting part 44A is substantially rectangular in shape. The power switch 47E is provided on the housing part 43E.

[0106] In the above configuration, the light-emitting unit 42E can be rotated while the light support unit 41E is attached to the core 3, so that the illumination light emitted from the light-emitting unit 44E of the light-emitting unit 42E can be supplied in any direction.

[0107] Figure 15 is a side view showing the light unit 4F according to the sixth example. Figure 16 is a perspective view showing the light unit 4F according to the sixth example. The light unit 4F includes a work light. The light unit 4F has a light support part 41F, a light-emitting part 42F that emits light based on power supplied from the battery 2 via the core 3, a light connector part 46F that is attached to and detached from the core mounting part 33, and a power switch 47F. The light connector part 46F is provided on the light support part 41F. The light-emitting part 42F includes a housing part 43F and a light-emitting part 44F supported by the housing part 43F. The light-emitting part 44F is cylindrical. The light unit 4F also has a second accessory mounting part 49 to which an accessory connector part 52 is attached and detached. The power switch 47F is provided on the light support part 41F.

[0108] In the above configuration, since the light-emitting section 42F has a cylindrical light-emitting section 44F, the light unit 4F can illuminate a 360-degree area around the light unit 4F. Furthermore, since the light unit 4F has a second accessory mounting section 49, the specifications of the lighting device 1 can be arbitrarily changed according to the usage scenario and user requirements by attaching accessories 5 to the light unit 4F. By standardizing the accessory connector section 52 of multiple accessories 5, multiple types of accessories 5 can be attached one by one to a single second accessory mounting section 49 of the light unit 4F.

[0109] Figure 17 is a side view showing a light unit 4G according to the seventh example. The light unit 4G includes a work light. The light unit 4G has a light support section 41G, a pair of light-emitting sections 421G and 422G that emit light based on power supplied from the battery 2 via the core 3, a light connector section 46G that is attached to and detached from the core mounting section 33, and a pair of power switches 471G and 472G. The light connector section 46G is provided on the light support section 41G. The light support section 41G rotatably supports the light-emitting section 421G via a rotating section 451G. The light-emitting section 421G rotates around the rotation axis HX of the rotating section 451G. The light support section 41G rotatably supports the light-emitting section 422G via a rotating section 452G. The light-emitting section 422G rotates around the rotation axis HX of the rotating section 452G. The light-emitting section 421G includes a housing section 431G and a light-emitting section 441G supported by the housing section 431G. The light-emitting section 422G includes a housing section 432G and a light-emitting section 442G supported by the housing section 432G. The power switch 471G is provided on the housing section 431G. The power switch 472G is provided on the housing section 432G. The power switch may also be provided on the light support section 41G. By operating the power switch provided on the light support section 41G, both the light-emitting section 421G and the light-emitting section 422G may be illuminated.

[0110] In the above configuration, with the light support unit 41G attached to the core 3, the light-emitting units 421G and 422G can each be rotated, so that the illumination light emitted from the light-emitting units 441G and 442G of the light-emitting units 421G and 422G can be supplied in any direction.

[0111] [Accessories] The following describes an example of accessory 5. Figure 18 shows accessory 5A according to the first example. Accessory 5A includes a clamp. Accessory 5A has a contact portion 51A that contacts a predetermined object and an accessory connector portion 52A that is attached to and detached from the first accessory mounting portion 34 or the second accessory mounting portion 49. The contact portion 51A has a semicircular base portion 511A, a semicircular movable portion 512A, a connecting portion 513A that connects one end of the base portion 511A to one end of the movable portion 512A, a connecting portion 514A that connects the other end of the base portion 511A to the other end of the movable portion 512A, and a lever 515A that is connected to the movable portion 512A via a rotating portion 516A. Accessory 5A is hung on a pipe-shaped object. After the base portion 511A and the movable portion 512A are positioned around the pipe-shaped object, the lever 515A is operated, causing the pipe-shaped object to be tightened between the base portion 511A and the movable portion 512A. This fixes the accessory 5 to the object.

[0112] Figure 19 shows an accessory 5B according to the second example. Accessory 5B includes a hook. Accessory 5B has a hook portion 51B which is a contact portion that contacts a predetermined object, and an accessory connector portion 52B which is attached to or detached from the first accessory mounting portion 34 or the second accessory mounting portion 49. The hook portion 51B is hung on the predetermined object. By providing the hook portion 51B that is hung on an object on accessory 5B, a lighting device 1 is provided with specifications that meet the usage scenario and user requirements of the lighting device 1.

[0113] Figure 20 shows an accessory 5C according to the third example. Accessory 5C includes a carabiner. Accessory 5B has a contact portion 51C that contacts a predetermined object and an accessory connector portion 52C that is attached to or detached from a first accessory mounting portion 34 or a second accessory mounting portion 49. The contact portion 51C has an arc-shaped base portion 511C and a movable portion 512C that is positioned in the opening of the base portion 511C. The movable portion 512C is connected to the base portion 511C via a rotating portion 513C. Accessory 5C is hung on an object. By rotating the movable portion 512C, the opening of the base portion 511C is opened. After inserting the object inside the base portion 511C through the opening of the base portion 511C, the accessory 5 is hung on the object by rotating the movable portion 512C to close the opening of the base portion 511C.

[0114] Figure 21 shows an accessory 5D according to the fourth example. Accessory 5D includes a clip. Accessory 5D has a contact portion 51D that contacts a predetermined object and an accessory connector portion 52D that is attached to or detached from the first accessory mounting portion 34 or the second accessory mounting portion 49. The contact portion 51D includes a first clip portion 511D and a second clip portion 512D that is connected to the first clip portion 511D via a rotating portion 513D. Accessory 5D clamps the object between the tip of the first clip portion 511D and the tip of the second clip portion 512D. By providing the first clip portion 511D and the second clip portion 512D that clamp the object on the accessory 5D, a lighting device 1 with specifications that meet the usage scenario and user requirements of the lighting device 1 is provided.

[0115] Figure 22 shows an accessory 5E according to the fifth example. Accessory 5E includes a clamp. Accessory 5E has a contact portion 51E that contacts a predetermined object and an accessory connector portion 52E that is attached to or detached from the first accessory mounting portion 34 or the second accessory mounting portion 49. The contact portion 51E includes a first clamp portion 511E and a second clamp portion 512E connected to the first clamp portion 511E. Accessory 5E clamps the object between the tip of the first clamp portion 511E and the tip of the second clamp portion 512E. By providing the first clamp portion 511E and the second clamp portion 512E that clamp the object on the accessory 5E, a lighting device 1 with specifications that meet the usage scenario and user requirements of the lighting device 1 is provided.

[0116] Figure 23 shows an accessory 5F according to the sixth example. Accessory 5F includes a belt. Accessory 5F has a contact portion 51F that contacts a predetermined object and an accessory connector portion 52F that is attached to or detached from the first accessory mounting portion 34 or the second accessory mounting portion 49. The contact portion 51F includes a belt portion 511F and a buckle portion 512F. Accessory 5F is wrapped around an object. The user's waist is given as an example of the object. By providing the belt portion 511F that is wrapped around an object on accessory 5F, a lighting device 1 is provided with specifications that meet the usage scenario and user requirements of the lighting device 1.

[0117] Figure 24 shows an accessory 5G according to the seventh example. Accessory 5G includes a flexible tripod. Accessory 5G has a contact portion 51G that contacts a predetermined object and an accessory connector portion 52G that can be attached to or detached from a first accessory mounting portion 34 or a second accessory mounting portion 49. The contact portion 51G includes a base portion 511G and three arm portions 512G, 513G, and 514G that extend from the base portion 511G in predetermined directions. Each of the three arm portions 512G, 513G, and 514G is flexible. Accessory 5G is supported by an object. A desk is given as an example object. Accessory 5G can also be suspended from an object. By providing the arm portions 512G, 513G, and 514G, which are supported parts that are supported by an object, on accessory 5G, lighting devices 1 can be provided with specifications that suit the usage scenario and user requirements of lighting device 1.

[0118] Figure 25 shows an accessory 5H according to the eighth example. Accessory 5H includes a magnet. Accessory 5H has a suction part 51H that contacts a predetermined object and an accessory connector part 52H that is attached to or detached from the first accessory mounting part 34 or the second accessory mounting part 49. The suction part 51H includes a magnet. The suction part 51H attaches to the object by the magnetic force of the magnet. The object includes metal. By providing the suction part 51H that attaches to the object on accessory 5H, a lighting device 1 is provided with specifications that meet the usage scenario and user requirements of the lighting device 1.

[0119] Figure 26 shows an accessory 5J according to the ninth example. The accessory 5J has a contact portion 51J that contacts a predetermined object and an accessory connector portion 52J that is attached to or detached from the first accessory mounting portion 34 or the second accessory mounting portion 49. The accessory 5J has a screw hole 511J into which a screw is inserted. By providing the screw hole 511J into the accessory 5J, the lighting device 1 can be provided with specifications that suit the usage scenario and user requirements of the lighting device 1. For example, if the object is a tripod with a screw, the lighting device 1 is fixed to the tripod via the accessory 5J.

[0120] [Extension member] Figure 27 is a side view showing the extension member 7 according to the embodiment. Figure 28 is a front view showing the extension member 7 according to the embodiment. In the embodiment, the lighting device 1 includes an extension member 7. The extension member 7 has a base portion 71, an extension mounting portion 72, an accessory connector portion 73, and an arm portion 74. The base portion 71 is a member that is long in a predetermined direction. The extension mounting portion 72 is provided on the base portion 71. The extension mounting portion 72 is attached to and detached from the accessory connector portion 52. The accessory connector portion 73 is attached to and detached from the first accessory mounting portion 34 of the core 3. A pair of accessory connector portions 73 are provided. One accessory connector portion 73 is attached to and detached from the first accessory mounting portion 34 provided on the first side surface of the base portion 31. The other accessory connector portion 73 is attached to and detached from the first accessory mounting portion 34 provided on the second side surface of the base portion 31. A pair of arm portions 74 are provided. One arm portion 74 connects one end of the base portion 71 to one accessory connector portion 73. The other arm portion 74 connects the other end of the base portion 71 to the other accessory connector portion 73.

[0121] By interposing the extension member 7 between the accessory 5 and the core 3, the accessory 5 is connected to the core 3 via the extension member 7. This provides the lighting device 1 with specifications that meet the usage scenario and user requirements.

[0122] [option] Figure 29 shows a lighting device 1 including option 6 according to an embodiment. In the example shown in Figure 29, the lighting device 1 comprises a core 3, a light unit 4, an accessory 5, and option 6.

[0123] Option 6 is interposed between the core 3 and the light unit 4. Option 6 functions as a power relay device that sends power supplied from the battery 2 to the core 3 to the light unit 4.

[0124] Option 6 has an option mounting section 64 to which the light connector section 46 is attached and detached, and an option connector section 66 to which the core mounting section 33 is attached and detached. Option 6 sends power supplied from the battery 2 via the core 3 to the light unit 4.

[0125] The interface of the option connector portion 66 of multiple options 6 is identical. In other words, the option connector portion 66 of multiple options 6 is standardized. Each of the multiple types of options 6 shown in Figure 1 is attached to and detached from the core mounting portion 33 of a single core 3. Because the option connector portion 66 of multiple options 6 is standardized, one of each of the multiple types of options 6 can be attached to a single core mounting portion 33 of the core 3. Options 6 are interchangeable with respect to the core 3.

[0126] Furthermore, the interface of the option mounting section 64 of option 6 and the interface of the core mounting section 33 of core 3 are identical. The light connector section 46 of light unit 4 can be attached to both the option connector section 66 and the core mounting section 33.

[0127] By interposing an option 6, which functions as a power relay device, between the light unit 4 and the core 3, the specifications of the lighting device 1 can be arbitrarily changed according to the usage scenario and user requirements. By standardizing the option connector portion 66 of multiple options 6, multiple types of options 6 can be attached to a single core 3. By standardizing the light connector portion 46 of multiple light units 4, multiple types of light units 4 can be attached to a single option 6.

[0128] In the example shown in Figure 29, option 6 includes a first base portion 61, a second base portion 62 rotatably supported on the first base portion 61, and an option support portion 63 rotatably supported on the second base portion 62. The option support portion 63 is rotatably supported on the second base portion 62 via a pivot portion 65. An option connector portion 66 is provided on the first base portion 61. An option mounting portion 64 is provided on the option support portion 63.

[0129] The interface of the option mounting section 64 and the interface of the core mounting section 33 are identical, and the option connector section 66 of the first option 6 is detachable from the option mounting section 64 of a second option 6, which is different from the first option 6. In other words, the option connector section 66 is detachable from the option mounting section 64 of another option 6. This allows the specifications of the lighting device 1 to be arbitrarily changed according to the usage scenario and user requirements.

[0130] The following describes an example of Option 6. Figure 30 shows Option 6A according to the first example. Option 6A has a first base portion 61A, a second base portion 62A rotatably supported on the first base portion 61A, and an option support portion 63A rotatably supported on the second base portion 62A. An option connector portion 66A is provided on the first base portion 61A. An option mounting portion 64A is provided on the option support portion 63A. The option support portion 63A is rotatably supported on the second base portion 62A via a rotating portion 651A. The option support portion 63A rotates around the rotation axis HX of the rotating portion 651A. The second base portion 62A is rotatably supported on the first base portion 61A via a rotating portion 652A. The second base portion 62A rotates around the rotation axis VX of the rotating portion 652A. The rotation axis HX and rotation axis VX are perpendicular to each other.

[0131] In the above configuration, since option 6 has two rotating parts 651A and 652A, the light-emitting part 42 of the light unit 4 mounted on option support part 63A can be directed in any direction while the first base part 61A is mounted on core 3. Therefore, the illumination light emitted from the light-emitting part 44 of the light-emitting part 42 can be supplied in any direction.

[0132] Figure 31 shows option 6B according to the second example. Option 6B has a base portion 61B, a handle portion 62B supported by the base portion 61B, and an option support portion 63B supported by the handle portion 62B. An option connector portion 66B is provided on the base portion 61B. An option mounting portion 64B is provided on the option support portion 63B.

[0133] In the above configuration, a handle portion 62B that can be gripped by the user is provided on option 6B, so that a lighting device 1 with specifications that suit the usage scenario and user requirements is provided.

[0134] Figure 32 shows an option 6C according to the third example. Option 6C has a base portion 61C and an option support portion 63C connected to the base portion 61C via a cable 67. An option connector portion 66C is provided on the base portion 61C. An option mounting portion 64C is provided on the option support portion 63C. Power supplied from the core 3 to the base portion 61C is sent to the option support portion 63C via the cable 67.

[0135] Option 6C also has a third accessory mounting section 68 to which the accessory connector section 52 is attached and detached. In the example shown in Figure 32, the third accessory mounting section 68 is provided on the option support section 63C.

[0136] In the above configuration, the base portion 61C attached to the core 3 and the optional support portion 63C to which the light unit 4 is attached are connected via a cable 67, so that a lighting device 1 with specifications that suit the usage scenario and user requirements of the lighting device 1 can be provided.

[0137] Furthermore, in the above configuration, by attaching accessory 5 to option 6C, the specifications of the lighting device 1 can be arbitrarily changed according to the usage scenario and user requirements. By standardizing the accessory connector portion 52 of multiple accessories 5, multiple types of accessories 5 can be attached one by one to a single third accessory mounting portion 68 of option 6C.

[0138] [Example combinations] The following describes examples of combinations of the light unit 4, accessory 5, and option 6 with the battery 2 and core 3. In the following description, when the battery 2 is attached to the battery mounting section 32, it will be referred to as the battery 2 being attached to the core 3. Similarly, when the light connector section 46 is attached to the core mounting section 33, it will be referred to as the light unit 4 being attached to the core 3. Similarly, when the accessory connector section 52 is attached to the first accessory mounting section 34, it will be referred to as the accessory 5 being attached to the core 3. Similarly, when the accessory connector section 52 is attached to the second accessory mounting section 49, it will be referred to as the accessory 5 being attached to the light unit 4. Similarly, when the accessory connector section 52 is attached to the extension mounting section 72, it will be referred to as the accessory 5 being attached to the extension member 7. Similarly, when the option connector section 66 is attached to the core mounting section 33, it will be referred to as the option 6 being attached to the core 3. Furthermore, the fact that the light connector section 46 is attached to the option mounting section 64 will be appropriately referred to as the light unit 4 being attached to option 6. Furthermore, the fact that the accessory connector section 52 is attached to the third accessory mounting section 68 will be appropriately referred to as the accessory 5 being attached to option 6. Furthermore, the fact that the option connector section 66 of the first option 6 is attached to the option mounting section 64 of the second option 6 will be appropriately referred to as the first option 6 being attached to the second option 6.

[0139] Figure 33 shows a lighting device 1 according to the first example. In the example shown in Figure 33, the battery 2 is attached to the core 3. The light unit 4A described above is attached to the core 3. The accessory 5A described above is attached to the core 3. The accessory 5A is hung on the object.

[0140] Figure 34 shows a lighting device 1 according to the second example. In the example shown in Figure 34, the battery 2 is attached to the core 3. The light unit 4B described above is attached to the core 3. The accessory 5A described above is attached to the core 3. The accessory 5A is hung on the object.

[0141] Figure 35 shows a lighting device 1 according to the third example. In the example shown in Figure 35, the battery 2 is mounted on the core 3. The light unit 4C described above is mounted on the core 3. The accessory 5G described above is mounted on the core 3. The accessory 5G is supported by the object.

[0142] Figure 36 shows a lighting device 1 according to the fourth example. In the example shown in Figure 36, the battery 2 is attached to the core 3. The light unit 4E described above is attached to the core 3. The accessory 5B described above is attached to the extension member 7. The accessory connector portion 73 of the extension member 7 is attached to the first accessory mounting portion 34 of the core 3. The accessory 5B is hung on the object.

[0143] Figure 37 shows a lighting device 1 according to the fifth example. In the example shown in Figure 37, the battery 2 is attached to the core 3. The light unit 4E described above is attached to the core 3. The accessory 5A described above is attached to the core 3. The accessory 5A is hung on the object.

[0144] Figure 38 shows a lighting device 1 according to the sixth example. In the example shown in Figure 38, the battery 2 is attached to the core 3. The light unit 4F described above is attached to the core 3. The accessory 5D described above is attached to the core 3. The accessory 5D clamps onto the object.

[0145] Figure 39 shows a lighting device 1 according to the seventh example. In the example shown in Figure 39, the battery 2 is attached to the core 3. The light unit 4F described above is attached to the core 3. The accessory 5B described above is attached to the light unit 4. The accessory 5B is hung on the object.

[0146] Figure 40 shows a lighting device 1 according to the eighth example. In the example shown in Figure 40, the battery 2 is attached to the core 3. The light unit 4F described above is attached to the core 3. The accessory 5G described above is attached to the extension member 7. The extension member 7 is attached to the core 3. The accessory 5G is suspended from the object.

[0147] Figure 41 shows a lighting device 1 according to the ninth example. In the example shown in Figure 41, the battery 2 is attached to the core 3. The above-mentioned option 6C is attached to the core 3. The above-mentioned light unit 4A is attached to option 6C. In addition, the above-mentioned accessory 5G is attached to the core 3. The above-mentioned accessory 5E is attached to option 6C.

[0148] Figure 42 shows a lighting device 1 according to the 10th example. In the example shown in Figure 42, the battery 2 is attached to the core 3. The above-mentioned option 6C is attached to the core 3. The above-mentioned light unit 4A is attached to option 6C. Also, the above-mentioned accessory 5E is attached to the core 3. The above-mentioned accessory 5F is attached to option 6.

[0149] Figure 43 shows a lighting device 1 according to the 11th example. In the example shown in Figure 43, the battery 2 is mounted on the core 3. The above-mentioned option 6A is mounted on the core 3. The above-mentioned light unit 4D is mounted on option 6A. In addition, the above-mentioned accessory 5H is mounted on the core 3. As explained with reference to Figure 30, option 6A has first and second base parts 61A and 62A, and an option support part 63A that is rotatably supported by the first and second base parts 61A and 62A. An option connector part 66A is provided on the first base part 61A. An option mounting part 64A is provided on the option support part 63A. With the first base part 61A mounted on the core 3, the light unit 4D mounted on the option support part 63A can be rotated, so that the illumination light emitted from the light-emitting part 42D of the light unit 4D can be supplied in any direction. Furthermore, as explained with reference to Figure 11, the light unit 4D has a light support portion 41D that rotatably supports the light-emitting portion 42D. The light connector portion 46D is provided on the light support portion 41D. In the above configuration, with the first base portion 61A attached to the core 3, the light unit 4D attached to the optional support portion 63A can be rotated, and furthermore, the light-emitting portion 42D in the light unit 4D can be rotated, so that the illumination light emitted from the light-emitting portion 42D can be supplied in any direction.

[0150] Figure 44 shows a lighting device 1 according to the 12th example. In the example shown in Figure 44, the battery 2 is attached to the core 3. The option 6B described above is attached to the core 3. The light unit 4D described above is attached to the option 6B. In addition, the accessory 5E described above is attached to the core 3.

[0151] Figure 45 shows a lighting device 1 according to the 13th example. In the example shown in Figure 45, the battery 2 is attached to the core 3. The above-mentioned option 6C is attached to the core 3. The above-mentioned option 6B is attached to option 6C. The above-mentioned light unit 4E is attached to option 6B. In addition, the above-mentioned accessory 5C is attached to the core 3. The above-mentioned accessory 5B is attached to option 6B.

[0152] Figure 46 shows a lighting device 1 according to the 14th example. In the example shown in Figure 46, the battery 2 is attached to the core 3. The option 6A described above is attached to the core 3. The light unit 4F described above is attached to the option 6A. In addition, the accessory 5H described above is attached to the core 3.

[0153] Figure 47 shows a lighting device 1 according to the 15th example. In the example shown in Figure 47, the battery 2 is attached to the core 3. The option 6B described above is attached to the core 3. The light unit 4F described above is attached to the option 6B. In addition, the accessory 5H described above is attached to the core 3.

[0154] Figure 48 shows a lighting device 1 according to the 16th example. In the example shown in Figure 48, the battery 2 is mounted on the core 3. The light unit 4E described above is mounted on the core 3.

[0155] Figure 49 shows a lighting device 1 according to the 17th example. In the example shown in Figure 49, the battery 2 is mounted on the core 3. The light unit 4F described above is mounted on the core 3.

[0156] Figure 50 shows a lighting device 1 according to the 18th example. In the example shown in Figure 50, the battery 2 is attached to the core 3. The above-mentioned option 6B is attached to the core 3. The above-mentioned light unit 4E is attached to option 6B.

[0157] [controller] Figure 51 is a block diagram showing a lighting device 1 according to an embodiment. The lighting device 1 includes a controller 8 provided on a core 3. The controller 8 has a circuit board and a plurality of electronic components mounted on the circuit board. A microcomputer is exemplified as an electronic component. A power switch 35 and a function switch 36 are also provided on the core 3. As described above, the power switch 35 is operated to switch the light-emitting unit 42 on and off. The function switch 36 is operated to change the function of the light unit 4.

[0158] The light unit 4 has a light-emitting element 10. An example of the light-emitting element 10 is a light-emitting diode (LED). Light emitted from the light-emitting element 10 is emitted from the light-emitting section 44. The light unit 4 is also provided with a power switch 47. As described above, the power switch 47 is operated to switch the light-emitting section 42 on and off.

[0159] In the example shown in Figure 51, the core 3 and the light unit 4 are connected via the core mounting portion 33 and the light connector portion 46. An option 6 may be interposed between the core 3 and the light unit 4.

[0160] The controller 8 includes an operation signal acquisition unit 81, an identification data acquisition unit 82, a light control unit 83, and a control data storage unit 84.

[0161] The operation signal acquisition unit 81 acquires operation signals from at least one of the power switch 35, the function switch 36, and the power switch 47. When the power switch 35 is operated, an operation signal is generated in the power switch 35. The operation signal acquisition unit 81 acquires the operation signal generated in the power switch 35 from the power switch 35. Similarly, the operation signal acquisition unit 81 acquires the operation signal generated in the function switch 36 from the function switch 36. The operation signal acquisition unit 81 acquires the operation signal generated in the power switch 47 from the power switch 47.

[0162] The identification data acquisition unit 82 acquires the identification data of the light unit 4. The light unit 4 has an identification data holding unit 11 that holds the identification data of the light unit 4. When the light connector portion 46 of the light unit 4 is attached to the core mounting portion 33, the identification data of the light unit 4 is transmitted from the identification data holding unit 11 to the identification data acquisition unit 82. The identification data acquisition unit 82 acquires the identification data of the light unit 4 transmitted from the identification data holding unit 11.

[0163] Identification data is assigned to each of the aforementioned light units 4A, 4B, 4C, 4D, 4E, 4F, and 4G. The identification data acquisition unit 82 can determine which of the light units 4A, 4B, 4C, 4D, 4E, 4F, or 4G the light unit 4 mounted on the core mounting portion 33 of the core 3 is by acquiring the identification data from the identification data holding unit 11.

[0164] The light control unit 83 controls the light unit 4 based on the operation signals acquired by the operation signal acquisition unit 81. When the operation signal acquisition unit 81 acquires an operation signal to turn on the light-emitting unit 42 from at least one of the power switch 35 and the power switch 47, the light control unit 83 transmits a control signal to the light unit 4 to turn on the light-emitting unit 42 of the light unit 4. The light unit 4 makes the light-emitting element 10 light up based on the control signal transmitted from the controller 8. When the operation signal acquisition unit 81 acquires an operation signal to turn off the light-emitting unit 42 from at least one of the power switch 35 and the power switch 47, the light control unit 83 transmits a control signal to the light unit 4 to turn off the light-emitting unit 42 of the light unit 4. The light unit 4 stops the light emission of the light-emitting element 10 based on the control signal transmitted from the controller 8.

[0165] Furthermore, the light control unit 83 changes the function of the light unit 4 mounted on the core mounting unit 33 based on the operation signal from the function switch 36 acquired by the operation signal acquisition unit 81 and the identification data of the light unit 4 mounted on the core mounting unit 33 acquired by the identification data acquisition unit 82.

[0166] For example, if the identification data acquisition unit 82 determines that the light unit 4A has been installed on the core mounting unit 33 based on the identification data acquired by the identification data acquisition unit 82, the light control unit 83 changes the color (color temperature) of the light emitted from the light-emitting part 42A of the light unit 4A, based on the operation signal from the function switch 36 acquired by the operation signal acquisition unit 81. When the function switch 36 is operated, the light emitted from the light-emitting part 42A of the light unit 4A is switched between warm-colored light, cool-colored light, and neutral-colored light.

[0167] For example, if the identification data acquisition unit 82 determines that the light unit 4B has been attached to the core mounting unit 33 based on the identification data acquired by the identification data acquisition unit 82, the light control unit 83 changes the brightness (intensity) of the light emitted from the light-emitting part 42B of the light unit 4B as a function of the light unit 4B, based on the operation signal from the function switch 36 acquired by the operation signal acquisition unit 81. By operating the function switch 36, the intensity of the light emitted from the light-emitting part 42B of the light unit 4B is adjusted.

[0168] For example, if the light unit 4C is determined to be mounted on the core mounting unit 33 based on the identification data acquired by the identification data acquisition unit 82, the light control unit 83 changes the emission state of the light emitted from the light-emitting part 42C of the light unit 4C, based on the operation signal from the function switch 36 via the operation signal acquisition unit 81. When the function switch 36 is operated, the emission state of the light emitted from the light-emitting part 42C of the light unit 4C is switched between a steady-on state and a blinking state.

[0169] Correlation data showing the relationship between the type of light unit 4 mounted on the core mounting section 33 and the function of the light unit 4 that is changed by operating the function switch 36 is pre-stored in the control data storage section 84. The light control unit 83 changes a specific function of the light unit 4 mounted on the core mounting section 33 based on the operation signal from the function switch 36 acquired by the operation signal acquisition section 81, the identification data of the light unit 4 mounted on the core mounting section 33 acquired by the identification data acquisition section 82, and the correlation data stored in the control data storage section 84.

[0170] In the above configuration, by simply operating the function switch 36 provided on the core 3, it is possible to arbitrarily change a specific function of the light unit 4 depending on the type of light unit 4 mounted on the core mounting section 33. This improves the convenience of the lighting device 1.

[0171] [Other embodiments] In the above embodiment, the interface of the battery 2 and the interface of the core mounting section 33 are different. The interface of the battery 2 and the interface of the core mounting section 33 may be the same. This allows existing light units powered by power tool batteries to be mounted on the core mounting section 33 when the battery 2 is a power tool battery. Alternatively, a power tool may be mounted on the core mounting section 33.

[0172] In the embodiment described above, the lighting system 100 has one type of battery 2 and one type of core 3. There may be multiple types of batteries 2. There may be multiple types of cores 3.

[0173] Figures 52 and 53 are schematic diagrams illustrating lighting systems 1000 according to other embodiments. As shown in Figure 52, the lighting system 1000 includes a first battery 2A and a second battery 2B. The types of the first battery 2A and the second battery 2B are different. For example, the rated voltage of the first battery 2A and the rated voltage of the second battery 2B are different. For example, the external dimensions of the first battery 2A and the external dimensions of the second battery 2B are different. The interfaces of the first battery 2A and the second battery 2B are different.

[0174] The lighting system 1000 also includes a first core 3A and a second core 3B. The first core 3A has a first battery mounting section 32A into which the first battery 2A is attached and detached, and a first core mounting section 33A into which the light connector section 46 of the light unit 4 is attached and detached. The second core 3B has a second battery mounting section 32B into which the second battery 2B is attached and detached, and a second core mounting section 33B into which the light connector section 46 of the light unit 4 is attached and detached. The interface of the first battery mounting section 32A and the interface of the second battery mounting section 32B are different.

[0175] The first battery 2A can be installed in the first battery mounting section 32A, but it cannot be installed in the second battery mounting section 32B. The second battery 2B can be installed in the second battery mounting section 32B, but it cannot be installed in the first battery mounting section 32A. The light connector section 46 can be installed in the first core mounting section 33A and the second core mounting section 33B, respectively.

[0176] Furthermore, the interface of the light connector section 46 is different from the interface of the first battery 2A and the interface of the second battery 2B. As shown in Figure 53, the first battery 2A cannot be installed in the light connector section 46. The second battery 2B cannot be installed in the light connector section 46.

[0177] In the above embodiment, the light control unit 83 changes a specific function of the light unit 4 according to the type of light unit 4, based on the operation signal from the function switch 36 and the identification data of the light unit 4 mounted on the core mounting section 33. The light control unit 83 may also change the control content of the light unit 4 based on the operation signal from the function switch 36 and the identification data of the light unit 4 mounted on the core mounting section 33. Changing the control content of the light unit 4 includes changing the amount of power supplied to the light unit 4. For example, when light unit 4A is mounted on the core mounting section 33, power is supplied from the core 3 to light unit 4A at a first energy amount, and when light unit 4B is mounted on the core mounting section 33, power is supplied from the core 3 to light unit 4B at a second energy amount greater than the first energy amount.

[0178] In the above-described embodiment, multiple function switches 36 may be provided on the core 3. Each of the multiple function switches may be assigned a dedicated function. Also, the number of functions that the light unit 4 can change may be less than the number of function switches 36. For example, when one of the multiple function switches is operated, only the functions that the light unit 4 mounted on the core 3 can change may be changed. As an example, if the core 3 is provided with function switches 36A, 36B, and 36C, function switch 36A may be assigned the function to change the color temperature, function switch 36B may be assigned the function to adjust the brightness, and function switch 36C may be assigned the function to switch the light emission state between a steady state and a blinking state. If the functions corresponding to the light unit 4F are only the function to change the color temperature and the function to adjust the brightness, when the light unit 4F is mounted on the core 3, the color temperature of the light emitted from the light unit 4F may be changed when function switch 36A is operated, and the brightness of the light emitted from the light unit 4F may be adjusted when function switch 36B is operated. Even if function switch 36C is operated, the state of the light unit 4F does not change. Furthermore, if the functions corresponding to the light unit 4B are limited to adjusting brightness and switching the light emission state between a steady state and a flashing state, when the light unit 4B is mounted on the core 3, the brightness of the light emitted from the light unit 4B may be adjusted by operating the function switch 36B, and the light emission state of the light unit 4F may be switched between a steady state and a flashing state by operating the function switch 36C. The state of the light unit 4B will not change even if the function switch 36A is operated.

[0179] In the embodiment described above, the function switch 36 may be provided on the light unit 4.

[0180] In the embodiments described above, the core 3 may be provided with input / output terminals. Universal Serial Bus (USB) terminals are an example of input / output terminals. The battery 2 may be discharged or charged via the input / output terminals. For example, the rechargeable battery of an electronic device, such as a mobile terminal, may be charged by power output from the battery 2 via the input / output terminals when the input / output terminals are connected to an electronic device via a USB cable.

[0181] In the above-described embodiment, a locking mechanism for locking the accessory connector portion 52 may be provided on at least one of the first accessory mounting portion 34, the second accessory mounting portion 49, the third accessory mounting portion 68, and the extension mounting portion 72. A release button for releasing the locking mechanism may also be provided. For example, if the first accessory mounting portion 34 is provided with both a locking mechanism and a release button, the user can remove the accessory connector portion 52 from the first accessory mounting portion 34 while operating the release button.

[0182] In the above-described embodiment, a screw hole may be provided in the base portion 31 of the core 3 into which a screw is inserted. The screw hole provided in the core 3 may be located in a different position from the first accessory mounting portion 34, or it may be provided in at least a part of the first accessory mounting portion 34.

[0183] Second embodiment. A second embodiment will now be described. In the following description, components that are the same as or equivalent to those in the above-described embodiment will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0184] In the following embodiments, the terms left, right, front, back, top, and bottom are used to describe the positional relationships of each part. These terms indicate relative positions or directions with respect to the center of the light system.

[0185] Figure 54 is a perspective view from the front left showing the light system 101 according to the embodiment. Figure 55 is a perspective view from the rear right showing the light system 101 according to the embodiment. Figure 56 is an exploded view of the light system 101 according to the embodiment, viewed from the front. Figure 57 is an exploded perspective view from the rear right showing a part of the light system 101 according to the embodiment.

[0186] The light system 101 includes a first light module 110 and a second light module 120. The first light module 110 includes a first housing 111, a module receiving section 112 located in the first housing 111, a first light-emitting section 113 supported by the first housing 111, and a power receiving section 115 located in the first housing 111. The second light module 120 includes a second housing 121, an interface 125 located in the second housing 121, and a second light-emitting section 123 supported by the second housing 121. Each of the first light module 110 and the second light module 120 corresponds to the light unit 4 described in the first embodiment above.

[0187] The first light module 110 and the second light module 120 are mechanically and electrically connected by a module receiving unit 112 and an interface 125. The power receiving unit 115 is connected to a base, which will be described later. The base functions as a power supply unit. Based on the power supplied from the base to the power receiving unit 115, the first light-emitting unit 113 emits light. Power is supplied from the base to the second light module 120 via the first light module 110. Power from the base is supplied to the interface 125 via the power receiving unit 115 and the module receiving unit 112. Based on the power supplied to the interface 125, the second light-emitting unit 123 emits light.

[0188] The first light-emitting unit 113 includes a light-emitting element disposed inside the first housing 111 and an optical member disposed in front of the light-emitting element. A light-emitting diode (LED) is an example of the light-emitting element. Light emitted from the light-emitting element passes through the optical member and is then emitted from the front surface of the optical member. The front surface of the optical member is the light-emitting surface of the first light-emitting unit 113. The light-emitting surface of the first light-emitting unit 113 faces forward. The light-emitting surface of the first light-emitting unit 113 is substantially flat. The light-emitting surface of the first light-emitting unit 113 is perpendicular to the front-to-back axis extending in the front-to-back direction. The light-emitting surface of the first light-emitting unit 113 may include a curved surface.

[0189] The second light-emitting unit 123 includes a light-emitting element disposed inside the second housing 121 and an optical member disposed in front of the light-emitting element. A light-emitting diode (LED) is an example of the light-emitting element. Light emitted from the light-emitting element passes through the optical member and is then emitted from the front of the optical member.

[0190] At least a portion of the first housing 111 is positioned around the first light-emitting section 113. The module receiving section 112 is positioned on the side surface of the first housing 111. The module receiving section 112 includes a recess provided on the side surface of the first housing 111.

[0191] The first housing 111 has multiple sides facing in different directions. The sides of the first housing 111 include a left side (first side) facing left, a right side (second side) facing right (opposite to the left direction), a top side (third side) facing upward (the intersection of the left and right directions), and a bottom side (fourth side) facing downward (opposite to the upward direction). Module receiving sections 112 are located on the left side, right side, and top side of the first housing 111, respectively.

[0192] The power supply receiving section 115 is located on the side of the first housing 111. The power supply receiving section 115 is located on a side of the first housing 111 different from the side of the first housing 111 on which the module receiving section 112 is located. In this embodiment, the power supply receiving section 115 is located on the lower surface of the first housing 111. The power supply receiving section 115 includes a protrusion that extends from the side of the first housing 111.

[0193] At least a portion of the second housing 121 is positioned around the second light-emitting section 123. The interface 125 is positioned on the side of the second housing 121. The interface 125 includes a protrusion that extends from the side of the second housing 121. The first light module 110 and the second light module 120 are mechanically and electrically connected when the interface 125 is inserted into the module receiving section 112.

[0194] In this embodiment, the interface 125 of the second light module 120 is inserted into the module receiving section 112 located on the left, right, and top surfaces of the first housing 111, respectively. That is, three second light modules 120 are mechanically and electrically connected to one first light module 110.

[0195] As shown in Figure 57, the module receiving portion 112 has a first terminal 112A and an engaged portion 112B. The first terminal 112A includes a plurality of pins. The engaged portion 112B includes a groove provided on the inner surface of the module receiving portion 112. Note that in Figure 57, a portion of the first housing 111 is shown in a cutaway state.

[0196] The interface 125 has a second terminal 122 connected to a first terminal 112A and an engaging portion 127 that engages with the engaged portion 112B. The second terminal 122 includes a hole into which the first terminal 112A is inserted. The engaging portion 127 includes a protrusion that fits onto the engaged portion 112B. The engaging portion 127 protrudes from the outer surface of the interface 125.

[0197] The engaging portion 127 moves to change between a state in which it is engaged with the engaged portion 112B and a state in which it is disengaged. The state in which the engaging portion 127 and the engaged portion 112B are engaged includes a state in which the engaging portion 127 is fitted into the engaged portion 112B. The state in which the engaging portion 127 and the engaged portion 112B are disengaged includes a state in which the engaging portion 127 is disengaged from the engaged portion 112B. The engaging portion 127 is biased by a biasing member (not shown) so as to protrude from the outer surface of the interface 125. The biasing member biases the engaging portion 127 so that it engages with the engaged portion 112B.

[0198] The engaging portion 127 is connected to a lock button 126, and the engagement and disengagement between the engaging portion 127 and the engaged portion 122B can be switched by operating the lock button 126. In this embodiment, the engagement between the engaging portion 127 and the engaged portion 122B is released when the lock button 126 is pressed. When the operation of the lock button 126 is released, the engaging portion 127 and the engaged portion 122B are engaged by the biasing force of the biasing member.

[0199] When mechanically and electrically connecting the first light module 110 and the second light module 120, the user inserts the interface 125 into the module receiving section 112. When the interface 125 is inserted into the module receiving section 112, the first terminal 112A is inserted into the second terminal 122, and the first light module 110 and the second light module 120 are electrically connected. After the interface 125 is inserted into the module receiving section 112, the engaging section 127 engages with the engaged section 122B by the biasing force of the biasing member, thereby mechanically connecting the first light module 110 and the second light module 120.

[0200] To disconnect the first light module 110 and the second light module 120, the user presses the lock button 126. Pressing the lock button 126 releases the engagement between the engaging portion 127 and the engaged portion 122B. With the engagement between the engaging portion 127 and the engaged portion 122B released, the user can pull out the interface 125 from the module receiving portion 112.

[0201] The interface 125 rotates relative to the second housing 121. The first light module 110 and the second light module 120, when connected to each other, rotate relative to each other around a pivot axis parallel to the light-emitting surface of the first light-emitting unit 113. As shown in Figure 55, the second light module 120 connected to the module receiving unit 112 on the left side of the first housing 111 and the second light module 120 connected to the module receiving unit 112 on the right side of the first housing 111 each rotate around a pivot axis VX that extends in the vertical direction. The second light module 120 connected to the module receiving unit 112 on the top surface of the first housing 111 rotates around a pivot axis HX that extends in the horizontal direction.

[0202] The first light module 110 and the base, described later, are mechanically and electrically connected by a power receiving section 115. The power receiving section 115 includes a protrusion that projects downward from the lower surface of the first housing 111. The base includes a module receiving section into which the power receiving section 115 is inserted. By inserting the power receiving section 115 into the module receiving section of the base, the first light module 110 and the base are mechanically and electrically connected.

[0203] The power receiving unit 115 and the interface 125 have the same structure. As shown in Figure 57, the power receiving unit 115 has a receiving terminal 114 that is connected to the power terminal of the base and an engaging portion 117 that engages with the engaged portion of the base. The engaging portion 117 is connected to the lock button 116.

[0204] The power receiving unit 115 rotates relative to the first housing 111. The first light module 110 and the base rotate relative to each other around a pivot axis parallel to the light-emitting surface of the first light-emitting unit 113 when they are connected to each other. The power receiving unit 115 rotates around a pivot axis HX that extends in the left-right direction.

[0205] The first light module 110 and the second light module 120 have different structures. Although the power receiving unit 115 and the interface 125 have the same structure, the second light module 120 does not have the module receiving unit 112.

[0206] In this embodiment, the module receiving portion 112 is provided on the side surface of the first housing 111. The module receiving portion 112 may also be provided on the rear surface of the first housing 111, facing in the opposite direction from the light-emitting surface of the first light-emitting portion 113.

[0207] Third embodiment. A third embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0208] Figure 58 is a perspective view from the left front showing the light system 102 according to the embodiment. Figure 59 is an exploded view of the light system 102 according to the embodiment, viewed from the front.

[0209] The light system 102 includes a first light module 110 and a second light module 130. The first light module 110 has the same structure as the first light module 110 described in the second embodiment above. The second light module 130 includes a second housing 131, an interface 135 disposed in the second housing 131, and a second light-emitting part 133 supported by the second housing 131. The interface 135 is inserted into a module receiving part 112. The interface 135 has a second terminal 132 connected to a first terminal 112A. The first light module 110 and the second light module 130 are mechanically and electrically connected by the module receiving part 112 and the interface 135.

[0210] In this embodiment, the second light module 130 has a module receiving section 138 having the same structure as the module receiving section 112 of the first light module 110. The second light module 130 has three module receiving sections 138.

[0211] The second housing 131 has four sides facing in different directions from one another. Module receiving sections 138 are located on the first, second, and third sides of the second housing 131, respectively. The interface 135 is located on the fourth side of the second housing 131. The module receiving section 138 can be mechanically and electrically connected to the power receiving section 115 of the first light module 110, the interface 125 of the second light module 120 as described in the second embodiment above, and the interface 135 of another second light module 130.

[0212] Fourth embodiment. A fourth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0213] Figure 60 is a perspective view from the front left showing the light system 103 according to the embodiment. Figure 61 is a perspective view from the rear right showing the light system 103 according to the embodiment. Figure 62 is an exploded view of the light system 103 according to the embodiment, viewed from the front. Figure 63 is an exploded perspective view from the rear right showing a part of the light system 103 according to the embodiment.

[0214] The lighting system 103 includes a first lighting module 110 and a second lighting module 130. The second lighting module 130 includes a second lighting module 130A and a second lighting module 130B. The second lighting module 130A has the same external dimensions as the second lighting module 130 described in the third embodiment above. The second lighting module 130B has the same external dimensions as the second housing 121 of the second lighting module 120 described in the second embodiment above.

[0215] In this embodiment, a module receiving section 112 is located on each of the four sides of the first housing 111. The first light module 110 does not have a power receiving section 115. In this embodiment, a module receiving section 138 is located on each of the four sides of the second housing 131 of the second light module 130A. A module receiving section 138 is located on one side (bottom surface) of the second light module 130B.

[0216] In this embodiment, the first light module 110 is connected to the base via the relay module 140. The second light module 130 is connected to the first light module 110 via the relay module 140. The relay module 140 corresponds to option 6 described in the first embodiment above.

[0217] The module receiving section 138 (second module receiving section) is mechanically and electrically connected to the relay module 140. The module receiving section 138 is mechanically and electrically connected to the first light module 110 via the relay module 140.

[0218] The module receiving section 112 is mechanically and electrically connected to the relay module 140. The module receiving section 112 (power receiving section) located on the lower surface of the first housing 111 is mechanically and electrically connected to the base via the relay module 140. The module receiving sections 112 (first module receiving sections) located on the left and right sides of the first housing 111 are mechanically and electrically connected to the second light module 130A via the relay module 140. The module receiving section 112 located on the upper surface of the first housing 111 is mechanically and electrically connected to the second light module 130B via the relay module 140.

[0219] The module receiving section 138 (second module receiving section) of the second light module 130, the module receiving section 112 (power receiving section) located on the lower surface of the first light module 110, the module receiving sections 112 (first module receiving section) located on the left and right sides of the first housing 111, and the module receiving section 112 located on the upper surface of the first housing 111 are all of the same structure.

[0220] The relay module 140 has a first relay interface 141 that is inserted into the module receiving section 112 and a second relay interface 142 that is inserted into the module receiving section 138 or the base module receiving section. The first relay interface 141 and the second relay interface 142 rotate relative to each other.

[0221] The first relay interface 141 includes a relay terminal connected to the first terminal 112A of the module receiving unit 112, an engaging portion 145 that engages with the engaged portion 112B of the module receiving unit 112, and a lock button 143 connected to the engaging portion 145. The relay terminal of the first relay interface 141 includes a hole into which the first terminal 112A is inserted. By operating the lock button 143, the engagement and disengagement of the engaging portion 145 and the engaged portion 112B can be switched.

[0222] The second relay interface 142 connected to the module receiving section 138 has a relay terminal connected to the second terminal 132 of the module receiving section 138, an engaging portion 146 that engages with the engaged portion of the module receiving section 138, and a lock button 144 connected to the engaging portion 146. The relay terminal of the second relay interface 142 includes a hole into which the second terminal 132 of the module receiving section 138 is inserted. By operating the lock button 144, the engagement and disengagement of the engaging portion 146 and the engaged portion of the module receiving section 138 can be switched. The second relay interface 142 connected to the module receiving section of the base has a similar structure.

[0223] Power is supplied from the base to the first light module 110 via a relay module 140 connected to a module receiving section 112 on the lower surface of the first housing 111. The power supplied to the first light module 110 is then supplied to the second light module 130A via a relay module 140 connected to module receiving sections 112 on the left and right sides of the first housing 111. The second light-emitting section 133 of the second light module 130A emits light using the power supplied from the first light module 110 via the relay module 140. The power supplied from the base to the first light module 110 is then supplied to the second light module 130B connected to the upper surface of the first housing 111. The second light-emitting section 133 of the second light module 130B emits light using the power supplied from the first light module 110.

[0224] Fifth embodiment. A fifth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0225] Figure 64 is a left front perspective view showing the light system 104 according to the embodiment. Figure 65 is a right rear perspective view showing the light system 104 according to the embodiment. Figure 66 is an exploded perspective view from the right rear showing the light system 104 according to the embodiment. Figure 67 is a right rear perspective view showing the base 160 according to the embodiment.

[0226] The light system 104 comprises a first light module 110, a second light module 120, and a base 160. The second light module 120 has an interface 125 that is mechanically and electrically connected to a module receiving portion 112 of the first light module 110. The first light module 110 has a power receiving portion 115. The power receiving portion 115 protrudes downward from the lower surface of the first housing 111.

[0227] The base 160 has a plate portion 161, a front leg portion 162, a rear leg portion 163, a handle portion 164, and a module receiving portion 165. An opening is provided at the rear of the plate portion 161. The handle portion 164 is part of the plate portion 161 and is located behind the opening. The user can carry the base 160 by gripping the handle portion 164 with their hand.

[0228] The front legs 162 protrude downward from the front of the lower surface of the plate portion 161. The front legs 162 are provided on the left and right sides of the front of the plate portion 161. The rear legs 163 protrude downward from the rear of the lower surface of the plate portion 161. The rear legs 163 are provided on the left and right sides of the handle portion 164. Each of the front legs 162 and rear legs 163 functions as a support placed on a mounting surface. The mounting surface is exemplified by the ground or floor.

[0229] In this embodiment, the lower part of the rear leg portion 163 is bent forward. The lower part of the rear leg portion 163 can function as a hook portion that can be attached to an object.

[0230] The module receiving section 165 protrudes upward from the front of the upper surface of the plate section 161. The first light module 110 and the base 160 are mechanically and electrically connected by the power receiving section 115 and the module receiving section 165. The base 160 functions as a power supply. Based on the power supplied from the base 160 to the power receiving section 115, the first light-emitting section 113 emits light. Power is supplied from the base 160 to the second light module 120 via the first light module 110. Power from the base 160 is supplied to the interface 125 via the power receiving section 115 and the module receiving section 112. Based on the power supplied to the interface 125, the second light-emitting section 123 emits light.

[0231] The module receiving section 165 includes a recess into which the power receiving section 115 is inserted. By inserting the power receiving section 115 into the module receiving section 165, the first light module 110 and the base 160 are mechanically and electrically connected.

[0232] As shown in Figure 67, the module receiving portion 165 has a power terminal 165A and an engagement portion 165B. The power terminal 165A includes a plurality of pins. The engagement portion 165B includes a groove provided on the inner surface of the module receiving portion 165. Note that in Figure 67, a portion of the base 160 is shown broken off.

[0233] As shown in Figure 57, the power receiving unit 115 has a receiving terminal 114 connected to the power terminal 165A of the base 160 and an engaging portion 117 that engages with the engaged portion 165B of the base 160. The receiving terminal 114 includes a hole into which the power terminal 165A is inserted. The engaging portion 117 includes a protrusion that fits onto the engaged portion 165B. The engaging portion 117 protrudes from the outer surface of the power receiving unit 115.

[0234] The engaging portion 117 moves to change between a state in which it is engaged with the engaged portion 165B and a state in which it is disengaged. The state in which the engaging portion 117 and the engaged portion 165B are engaged includes a state in which the engaging portion 117 is fitted into the engaged portion 165B. The state in which the engaging portion 117 and the engaged portion 165B are disengaged includes a state in which the engaging portion 117 is disengaged from the engaged portion 165B. The engaging portion 117 is biased by a biasing member (not shown) so as to protrude from the outer surface of the power receiving portion 115. The biasing member biases the engaging portion 117 so that it engages with the engaged portion 165B.

[0235] The engaging portion 117 is connected to the lock button 116. By operating the lock button 116, the engagement and disengagement of the engaging portion 117 and the engaged portion 165B are switched. In this embodiment, when the lock button 116 is pressed, the engagement between the engaging portion 117 and the engaged portion 165B is released. When the operation of the lock button 116 is released, the engaging portion 117 and the engaged portion 165B are engaged by the biasing force of the biasing member.

[0236] When mechanically and electrically connecting the first light module 110 and the base 160, the user inserts the power supply receiving unit 115 into the module receiving unit 165. When the power supply receiving unit 115 is inserted into the module receiving unit 165, the power supply terminal 165A is inserted into the engaging unit 117, and the first light module 110 and the base 160 are electrically connected. After the power supply receiving unit 115 is inserted into the module receiving unit 165, the engaging unit 117 engages with the engaged unit 165B by the biasing force of the biasing member, thereby mechanically connecting the first light module 110 and the base 160.

[0237] To disconnect the first light module 110 from the base 160, the user presses the lock button 116. Pressing the lock button 116 releases the engagement between the engaging portion 117 and the engaged portion 165B. With the engagement between the engaging portion 117 and the engaged portion 165B released, the user can pull the power supply receiving portion 115 out of the module receiving portion 165.

[0238] The module receiving part 165 rotates with respect to the plate part 161. The module receiving part 165 rotates about a rotation axis extending in the vertical direction. The power receiving part 115 rotates with respect to the first housing 111. The first light module 110 rotates about a rotation axis HX extending in the left - right direction.

[0239] The power sources of the first light module 110 and the second light module 120 are the battery 150. Similar to the battery 2 described in the above - mentioned first embodiment, the battery 150 is a battery for a power tool. In the embodiment, the battery 150 includes a first battery 151 and a second battery 152.

[0240] In the embodiment, the first light module 110 has a battery mounting part 118 on which the first battery 151 is mounted. The battery mounting part 118 is arranged on the rear surface of the first housing 111 facing the opposite direction to the light emitting surface of the first light emitting part 113.

[0241] The battery mounting part 118 has a power terminal 119. The power terminal 119 is connected to a power terminal (not shown) of the first battery 151.

[0242] When mounting the first battery 151 to the battery mounting part 118, the user slides the first battery 151 downward with respect to the battery mounting part 118. When the first battery 151 is slid downward with respect to the battery mounting part 118, the first battery 151 is mounted to the battery mounting part 118. When removing the first battery 151 from the battery mounting part 118, the user operates a release button provided on the first battery 151 and then slides the first battery 151 upward with respect to the battery mounting part 118. When the first battery 151 is slid upward with respect to the battery mounting part 118, the first battery 151 is removed from the battery mounting part 118.

[0243] In an embodiment, the base 160 has a battery mounting portion 166 on which the second battery 152 is mounted. The battery mounting portion 166 is located on the lower surface of the plate portion 161.

[0244] When installing the second battery 152 into the battery mounting section 166, the user slides the second battery 152 backward relative to the battery mounting section 166. By sliding the second battery 152 backward relative to the battery mounting section 166, the second battery 152 is installed into the battery mounting section 166. When removing the second battery 152 from the battery mounting section 166, the user operates the release button provided on the second battery 152, and then slides the second battery 152 forward relative to the battery mounting section 166. By sliding the second battery 152 forward relative to the battery mounting section 166, the second battery 152 is removed from the battery mounting section 166.

[0245] The power receiving unit 115 of the first light module 110 receives power from the base 160. The power receiving unit 115 receives power from the second battery 152 which is mounted in the battery mounting section 166 of the base 160. The first light-emitting unit 113 of the first light module 110 emits light using the power from the second battery 152. The first light module 110 supplies power from the second battery 152 to the second light module 120. The second light-emitting unit 123 of the second light module 120 emits light using the power from the second battery 152.

[0246] Furthermore, the first light-emitting section 113 of the first light module 110 emits light using power from the first battery 151. The first light module 110 supplies power from the first battery 151 to the second light module 120. The second light-emitting section 123 of the second light module 120 emits light using power from the first battery 151.

[0247] The power receiving section 115 is a base connecting section connected to the lock button 116. The first light module 110 supplies power to the second light module 120 from the second battery 152 mounted in the battery mounting section 166 of the base 160 or from the first battery 151 mounted in the battery mounting section 118.

[0248] Figure 68 is a rear-right perspective view showing a part of the light system 104 according to the embodiment. Figure 68 shows an example in which three second light modules 120 are connected to a first light module 110. As shown in Figure 68, the first light module 110 may be used detached from the base 160. The first light-emitting part 113 of the first light module 110 can emit light using power from a first battery 151 mounted in the battery mounting part 118. The first light module 110 can supply power from the first battery 151 to the second light modules 120. The second light-emitting part 123 of the second light module 120 can emit light using power from the first battery 151.

[0249] Figure 69 is a left-front perspective view showing a light system 104 according to an embodiment. Figure 69 shows an example in which three second light modules 120 are connected to a first light module 110. As shown in Figure 69, the power receiving section 115 of the first light module 110 may be connected to the module receiving section 165 of the base 160. When the power receiving section 115 and the module receiving section 165 are mechanically and electrically connected, the first light module 110 may supply power to the second light modules 120 from a second battery 152 mounted in the battery mounting section 166 of the base 160 or from a first battery 151 mounted in the battery mounting section 118 of the first light module 110.

[0250] The first battery 151 and the second battery 152 may be of the same type or of different types. If the first battery 151 and the second battery 152 are of the same type, the rated voltage of the first battery 151 and the rated voltage of the second battery 152 are the same. The external shape and dimensions of the first battery 151 and the external shape and dimensions of the second battery 152 are the same. The structure of the battery mounting section 118 and the structure of the battery mounting section 166 are the same. If the first battery 151 and the second battery 152 are of different types, the rated voltage of the first battery 151 and the rated voltage of the second battery 152 may be different. The external shape and dimensions of the first battery 151 and the external shape and dimensions of the second battery 152 may be different. The structure of the battery mounting section 118 and the structure of the battery mounting section 166 may be different.

[0251] The power receiving unit 115 and the module receiving unit 165 may be mechanically connected, but not necessarily electrically connected. In other words, the power receiving unit 115 may be a base connecting unit that is mechanically connected to the base 160. The first light module 110 may supply power to the second light module 120 from the first battery 151 mounted in the battery mounting unit 118.

[0252] Figure 70 is a front view of the lighting system 104 according to the embodiment. As shown in Figure 70, a plurality of second light modules 130 may be connected to a first light module 110 connected to a base 160. Alternatively, a second light module 120 may be connected to a second light module 130.

[0253] Sixth embodiment. A sixth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0254] Figure 71 is a perspective view from the left front showing a light system 105 according to an embodiment. As shown in Figure 71, the power receiving unit 170 of the first light module 110 may include a battery mounting unit into which the battery 150 is installed. The structure of the battery mounting unit 118 and the battery mounting unit of the power receiving unit 170 are identical. The battery 150 is attached to and detached from the power receiving unit 170. The first light-emitting unit 113 of the first light module 110 emits light using power from the battery 150. The first light module 110 supplies power from the battery 150 to the second light module 120. The second light-emitting unit 123 of the second light module 120 emits light using power from the battery 150.

[0255] When attaching the battery 150 to the power receiving unit 170, the user slides the battery 150 backward relative to the power receiving unit 170. By sliding the battery 150 backward relative to the power receiving unit 170, the battery 150 is attached to the power receiving unit 170. When removing the battery 150 from the power receiving unit 170, the user operates the release button provided on the battery 150, and then slides the battery 150 forward relative to the power receiving unit 170. By sliding the battery 150 forward relative to the power receiving unit 170, the battery 150 is removed from the power receiving unit 170.

[0256] Seventh embodiment. A seventh embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0257] FIG. 72 is a perspective view from the front left showing the lighting system 106 according to the embodiment. The lighting system 106 includes a first light module 110, a second light module 120 connected to the first light module 110, and a base 180 connected to the first light module 110. The base 180 includes a tripod 181, a pole 182 extending upward from the tripod 181, a battery box 183 disposed at an intermediate portion of the pole 182, and a module receiving portion 185 mechanically and electrically connected to the power receiving portion 115 of the first light module 110.

[0258] The module receiving portion 185 is disposed at the upper end of the tripod 181. A battery mounting portion for mounting the battery 150 is disposed inside the battery box 183. Power from the battery 150 is supplied to the first light module 110 via the module receiving portion 185. The first light module 110 supplies power from the battery 150 to the second light module 120.

[0259] The structure of the module receiving portion 185 of the base 180 is the same as the structure of the module receiving portion 165 of the base 160 described in the above-described fifth embodiment. That is, the module receiving portion 165 and the module receiving portion 185 have the same structure.

[0260] The tripod 181 functions as a support portion placed on the placement surface. The structure of the tripod 181 is different from the structures of the front leg 162 and the rear leg 163 of the base 160 described in the above-described fifth embodiment. That is, the tripod 181 and the front leg 162 and the rear leg 163 have different structures.

[0261] The battery 150 mounted on the battery mounting portion 166 of the base 160 and the battery 150 mounted on the battery mounting portion of the base 180 are of the same type.

[0262] Eighth Embodiment. An eighth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0263] Figure 73 is a perspective view from the front right showing a light system 107 according to an embodiment. The light system 107 comprises a first light module 110, a second light module 120 connected to the first light module 110, and a base 190 connected to the first light module 110. The base 190 has a plate portion 191, leg portions 192 connected to the plate portion 191, and a module receiving portion 195 that is mechanically and electrically connected to a power receiving portion 115 of the first light module 110. The leg portions 192 are positioned on the left and right sides of the plate portion 191, respectively. Parts of the leg portions 192 are bent. The leg portions 192 function as hook portions that can be hung on an object 193.

[0264] The base 190 has multiple module receiving sections 195. In the example shown in Figure 73, the base 190 has two module receiving sections 195. The power receiving section 115 of the first light module 110 is connected to each of the two module receiving sections 195. In the example shown in Figure 73, the first light module 110 is positioned to hang from the module receiving sections 195.

[0265] Multiple batteries 150 are mounted on the plate portion 191. The base 190 has multiple battery mounting sections on which the batteries 150 are mounted. Multiple battery mounting sections are provided at intervals on the upper surface of the plate portion 191. In the example shown in Figure 73, four battery mounting sections are arranged at intervals in the left-right direction. A battery 150 is mounted in each of the four battery mounting sections.

[0266] Power from the battery 150 is supplied to the first light module 110 via the module receiving unit 195. The first light module 110 supplies power from the battery 150 to the second light module 120.

[0267] The module receiving section 165 described in the fifth embodiment above, the module receiving section 185 described in the seventh embodiment above, and the module receiving section 195 have the same structure.

[0268] The legs 192 function as support parts placed on the mounting surface. That is, the base 190 may be used with the legs 192 placed on the mounting surface without being placed over the object 193. When the legs 192 are placed on the mounting surface, the first light module 110 is positioned above the plate portion 191. The front legs 162 and rear legs 163 described in the fifth embodiment above, the tripod 181 described in the seventh embodiment above, and the legs 192 have different structures.

[0269] The battery 150 installed in the battery mounting section 166 of base 160, the battery 150 installed in the battery mounting section of base 180, and the battery 150 installed in the battery mounting section of base 190 are of the same type.

[0270] Ninth embodiment. A ninth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0271] Figure 74 is a side view showing a light system 108 according to an embodiment. As shown in Figure 74, the core 3 described in the first embodiment above may be provided with a module receiving unit 200 that is mechanically and electrically connected to the power receiving unit 115 of the first light module 110. A battery 2 is mounted on the core 3. Power from the battery 2 is supplied to the first light module 110 via the module receiving unit 200. The first light module 110 supplies power from the battery 2 to the second light module 120.

[0272] Note. The technology disclosed herein may have the following configuration:

[0273] [Note A] (A1) A first light module having a first housing, a module receiving section disposed in the first housing, a first light-emitting section supported by the first housing, and a power receiving section disposed in the first housing, A second light module comprising a second housing, an interface disposed in the second housing, and a second light-emitting section supported by the second housing, The first light module and the second light module are mechanically and electrically connected by the module receiving section and the interface. Power is supplied to the second light module via the first light module. Lighting system. (A2) The module receiving portion has a first terminal and an engaged portion, The interface has a second terminal connected to the first terminal and an engaging portion that engages with the engaged portion. The lighting system described in (A1) above. (A3) The aforementioned engaging portion is biased, By operating the lock button, the engagement and disengagement of the engaging portion and the engaged portion can be switched. The lighting system described in (A2) above. (A4) The interface rotates relative to the second housing, A lighting system as described in any one of the above (A1) to (A3). (A5) The first light module and the second light module, when connected to each other, rotate relative to each other around a pivot axis parallel to the light-emitting surface of the first light-emitting unit. A lighting system as described in any one of the above (A1) to (A4). (A6) At least a portion of the first housing is arranged around the first light-emitting portion, The module receiving section is located on the side of the first housing, A lighting system as described in any one of the above (A1) to (A5). (A7) The side surface of the first housing includes a first side surface facing a first direction and a second side surface facing a second direction opposite to the first direction, The module receiving section is located on the first side and the second side, respectively. The lighting system described above (A6). (A8) The side surface of the first housing includes a third side surface facing a third direction which is the intersection of the first and second directions, The module receiving section is located on the third side, The lighting system described above (A7). (A9) The power receiving unit is located on the side of the first housing, A lighting system as described in any one of the above (A6) to (A8). (A10) The first housing has multiple sides facing in different directions from one another, The power receiving unit is positioned on a side different from the side on which the module receiving unit is positioned. The lighting system described in (A9) above. (A11) The power receiving unit rotates relative to the first housing, A lighting system as described in any one of the above (A1) through (A10). (A12) The power receiving unit has a receiving terminal connected to the power terminal of the base and an engaging portion that engages with the engaged portion of the base. The power receiving unit receives power from the base. A lighting system as described in any one of the above (A1) through (A11). (A13) The power receiving unit and the interface have the same structure. A lighting system as described in any one of the above (A1) to (A12). (A14) The base comprises a power terminal, an engagement portion, and a battery mounting portion into which the battery is attached. The power receiving unit has a receiving terminal connected to the power terminal and an engaging portion that engages with the engaged portion, The power receiving unit receives power from the battery. A lighting system as described in any one of the above (A1) through (A13). (A15) The second light module does not have a module receiving section. A lighting system as described in any one of the above (A1) through (A14). (A16) The second light module has a module receiving portion having the same structure as the module receiving portion of the first light module. A lighting system as described in any one of the above (A1) through (A14). (A17) The first housing and A module receiving section is arranged in the first housing and to which the second light module is mechanically and electrically connected, The first light-emitting part is supported by the first housing, The first housing comprises a power receiving unit, To supply power to the second light module, First light module. (A18) The module receiving portion has a first terminal connected to the second terminal of the second light module, and an engaged portion that engages with the engaging portion of the second light module. The first light module as described above (A17). (A19) With the second light module connected, the first light-emitting unit rotates relative to the second light module around a pivot axis parallel to the light-emitting surface of the first light-emitting unit. The first light module as described in (A17) or (A18) above. (A20) At least a portion of the first housing is arranged around the first light-emitting portion, The module receiving section is located on the side of the first housing, The first light module described in any one of the above items (A17) to (A19). (A21) The side surface of the first housing includes a first side surface facing a first direction and a second side surface facing a second direction opposite to the first direction, The module receiving section is located on the first side and the second side, respectively. The first light module as described above (A20). (A22) The side surface of the first housing includes a third side surface facing a third direction which is the intersection of the first and second directions, The module receiving section is located on the third side, The first light module as described above (A21). (A23) The power receiving unit is located on the side of the first housing, The first light module described in any one of the above (A20) to (A22). (A24) The first housing has multiple sides facing in different directions from one another, The power receiving unit is positioned on a side different from the side on which the module receiving unit is positioned. The first light module as described above (A23). (A25) The power receiving unit rotates relative to the first housing, The first light module described in any one of the above (A17) to (A24). (A26) The power receiving unit has a receiving terminal connected to the power terminal of the base and an engaging portion that engages with the base. The power receiving unit receives power from the base. The first light module described in any one of the above (A17) to (A25). (A27) Second housing and An interface located in the second housing, to which the first light module is mechanically and electrically connected, The device comprises a second light-emitting section supported by the second housing, Power is supplied from the first light module. Second light module. (A28) The interface has a second terminal connected to a first terminal of the first light module, and an engaging portion that engages with the engaged portion of the first light module. The second light module as described above (A27). (A29) The aforementioned engaging portion is biased, By operating the lock button, the engagement and disengagement of the engaging portion and the engaged portion can be switched. The second light module as described above (A28). (A30) When connected to the first light module, it rotates relative to the first light module about a pivot axis parallel to the light-emitting surface of the first light module. The second light module described in any one of the above (A27) to (A29).

[0274] [Note B] (B1) The first housing and A module receiving section is arranged in the first housing and to which the second light module is mechanically and electrically connected, The first light-emitting part is supported by the first housing, The first housing comprises a power receiving unit, The power receiving unit includes a battery mounting unit into which a battery is installed. Power from the aforementioned battery is supplied to the second light module. First light module. (B2) The battery mounting portion is positioned on the rear surface of the first housing, facing in the opposite direction from the light-emitting surface of the first light-emitting portion. The first light module as described in (B1) above. (B3) The aforementioned battery is a battery for power tools. The first light module as described in (B1) or (B2) above. (B4) It has a base connecting part that is mechanically connected to the base, The first light module described in any one of the above (B1) to (B3). (B5) The base connecting portion rotates relative to the first housing. The first light module as described in (B4) above. (B6) The base connecting portion is mechanically and electrically connected to the base. Power is supplied to the second light module from a battery mounted on the base or a battery mounted on the battery mounting section. The first light module as described in (B4) above. (B7) Second housing and The second module receiving section is located in the second housing and is mechanically and electrically connected to the relay module, The device comprises a second light-emitting section supported by the second housing, Power is supplied from the first light module via the relay module. Second light module. (B8) The relay module has a relay terminal connected to the second terminal of the second light module and an engaging portion that engages with the engaged portion of the second light module. The second light module as described above (B7). (B9) The first light module has a first module receiving section to which the relay module is mechanically and electrically connected, The second module receiving section has the same structure as the first module receiving section. The second light module as described in (B7) or (B8) above. (B10) The first light module has a power receiving section, The second module receiving unit has the same structure as the power receiving unit. The second light module as described in (B7) or (B8) above. (B11) The first light module has a first module receiving section to which the relay module is mechanically and electrically connected, and a power receiving section, The first module receiving unit, the second module receiving unit, and the power supply receiving unit have the same structure. The second light module as described in (B7) or (B8) above.

[0275] [Note C] (C1) A light module having a housing, a power receiving unit disposed in the housing, and a light-emitting unit supported by the housing, A first base comprising a first module receiving section mechanically and electrically connected to the power receiving section, and a first battery mounting section into which a first battery is mounted, and capable of supplying power from the first battery to the light module, The device comprises a second module receiving section mechanically and electrically connected to the power receiving section, a second battery mounting section into which a second battery is mounted, and a second base capable of supplying power from the second battery to the light module. The first module receiving section and the second module receiving section have the same structure. Lighting system. (C2) The first base has a first support portion that is placed on a mounting surface, The second base has a second support portion that is placed on the mounting surface, The first support part and the second support part have different structures. The lighting system described in (C1) above. (C3) One or both of the first base and the second base have a hook portion. The lighting system described in (C1) or (C2) above. (C4) The first base has a first support portion that is placed on a mounting surface, The second base has a second support portion that is placed on the mounting surface, One or both of the first support portion and the second support portion have a hook portion. The lighting system described in (C1) above. (C5) The first battery and the second battery are of the same type. A lighting system as described in any one of the above (C1) to (C4). (C6) The second base has a plurality of second module receiving units. A lighting system as described in any one of the above (C1) to (C5). (C7) The first base has a plurality of first module receiving units, The lighting system described above (C6). (C8) The second base has multiple second battery mounting sections. A lighting system as described in any one of the above (C1) to (C7). (C9) The first base has a plurality of first battery mounting sections, The lighting system described above (C8). (C10) The aforementioned light module is mechanically and electrically connected to another light module. A lighting system as described in any one of the above (C1) to (C9).

[0276] [Note D] (D1) A core having a battery mounting section for attaching and detaching a battery, a core mounting section, and a first accessory mounting section, A light unit having a light connector portion that is attached to and detached from the core mounting portion, and a light-emitting portion that emits light based on power supplied from the battery via the core, The accessory comprises an accessory connector portion that is attached to and detached from the first accessory mounting portion, and a contact portion that contacts a predetermined object. Lighting device. (D2) The core has a plurality of first accessory mounting portions, The lighting device described in (D1) above. (D3) The light unit has a second accessory mounting portion into which the accessory connector portion is attached and detached. The lighting device described in (D1) or (D2) above. (D4) The light-emitting part has a cylindrical light-emitting section. A lighting device as described in any one of the above (D1) to (D3). (D5) The light-emitting part has a ring-shaped light-emitting section. A lighting device as described in any one of the above (D1) to (D3). (D6) The light unit has a light support portion that rotatably supports the light-emitting portion, The light connector portion is provided on the light support portion, A lighting device as described in any one of the above (D1) to (D3). (D7) The system includes an option mounting section to which the light connector is attached and detached, and an option connector section to which the core mounting section is attached and detached, and includes an option to send power supplied from the battery via the core to the light unit. A lighting device as described in any one of the above (D1) to (D5). (D8) The option has a third accessory mounting portion on which the accessory connector portion is attached and detached. The lighting device described in (D7) above. (D9) The option comprises a base portion and an option support portion rotatably supported on the base portion. The optional connector portion is provided on the base portion, The option mounting portion is provided on the option support portion, The lighting device described in (D7) or (D8) above. (D10) The light unit has a light support portion that rotatably supports the light-emitting portion, The light connector portion is provided on the light support portion, The lighting device described in (D9) above. (D11) The option comprises a first base portion, a second base portion rotatably supported on the first base portion, and an option support portion rotatably supported on the second base portion. The optional connector portion is provided on the first base portion, The option mounting portion is provided on the option support portion, The lighting device described in (D7) or (D8) above. (D12) The option comprises a base portion and an option support portion connected to the base portion via a cable. The optional connector portion is provided on the base portion, The option mounting portion is provided on the option support portion, The lighting device described in (D7) or (D8) above. (D13) The aforementioned optional connector portion is detachably attached to the optional mounting portion of another option. A lighting device as described in any one of the above (D7) to (D12). (D14) The aforementioned option has a handle portion, The lighting device described in (D7) above. (D15) The aforementioned accessory is hung on the aforementioned object, A lighting device as described in any one of the above (D1) to (D14). (D16) The accessory clamps the object, A lighting device as described in any one of the above (D1) to (D14). (D17) The accessory is supported by the object, A lighting device as described in any one of the above (D1) to (D14). (D18) The accessory is attached to the object, A lighting device as described in any one of the above (D1) to (D14). (D19) The accessory is wrapped around the object, A lighting device as described in any one of the above (D1) to (D14). (D20) The accessory has a screw hole into which a screw is inserted. A lighting device as described in any one of the above (D1) to (D14). (D21) The extension member comprises an extension mounting portion that is attached to and detached from the accessory connector portion, and a core holding portion that holds the core. A lighting device as described in any one of the above (D1) to (D20). (D22) The interface of the battery and the interface of the core mounting portion are different. A lighting device as described in any one of the above (D1) to (D21). (D23) The light unit is provided with a first power switch which is operated to switch the light-emitting part on and off, A lighting device as described in any one of the above (D1) to (D22). (D24) The core is provided with a second power switch which is operated to switch the light-emitting part on and off, The lighting device described above (D23). (D25) A function switch provided in the core, which is operated to change the function of the light unit, The system includes a controller that changes the function of the light unit based on the operation signal from the function switch and the identification data of the light unit mounted on the core mounting portion. A lighting device as described in any one of the above (D1) to (D24). (D26) The aforementioned battery is a battery for power tools. A lighting device as described in any one of the above (D1) to (D25). [Explanation of Symbols]

[0277] 1…Lighting device, 2…Battery, 2A…First battery, 2B…Second battery, 3…Core, 3A…First core, 3B…Second core, 4…Light unit, 4A…Light unit, 4B…Light unit, 4C…Light unit, 4D…Light unit, 4E…Light unit, 4F…Light unit, 4G…Light unit, 5…Accessory, 5A…Accessory, 5B…Accessory, 5C…Accessory, 5D…Accessory, 5E…Accessory, 5F…Accessory, 5G…Accessory, 5H…Accessory, 5J…Accessory, 6…Option, 6A…Option, 6 B...Option, 6C...Option, 7...Extension member, 8...Controller, 10...Light-emitting element, 11...Identification data holding part, 21...Mounting surface, 22...Housing, 23...Rail, 24...Protrusion, 25...Release button, 26...Power terminal, 27...Communication terminal, 31...Base part, 32...Battery mounting part, 32A...First battery mounting part, 32B...Second battery mounting part, 33...Core mounting part, 33A...First core mounting part, 33B...Second core mounting part, 34...First accessory mounting part, 35...Power switch (Second power switch), 36...Function switch, 41...Light support part, 41A...Light Support section, 41B... Light support section, 41C... Light support section, 41D... Light support section, 41E... Light support section, 41F... Light support section, 41G... Light support section, 42... Light-emitting section, 42A... Light-emitting section, 42B... Light-emitting section, 42C... Light-emitting section, 42D... Light-emitting section, 42E... Light-emitting section, 42F... Light-emitting section, 43... Housing section, 43A... Housing section, 43B... Housing section, 43C... Housing section, 43D... Housing section, 43E... Housing section, 43F... Housing section, 44... Light-emitting section, 44A... Light-emitting section, 44B... Light-emitting section, 44C... Light-emitting section, 44D... Light-emitting section, 44E... Light emitter, 44F...Light emitter, 45...Rotating part, 45A...Rotating part, 45B...Rotating part, 45C...Rotating part, 45D...Rotating part, 45E...Rotating part, 46...Light connector part, 46A...Light connector part, 46B...Light connector part, 46C...Light connector part, 46D...Light connector part, 46E...Light connector part, 46F...Light connector part, 46G...Light connector part, 47...Power switch (first power switch), 47A...Power switch, 47B...Power switch, 47C...Power switch, 47D...Power switch, 47E...Power switch, 47F...Power switch,48...Illumination range adjustment ring, 49...Second accessory mounting part, 51...Contact part, 51A...Contact part, 51B...Hook part, 51C...Contact part, 51D...Contact part, 51E...Contact part, 51F...Contact part, 51G...Contact part, 51H...Adhesive part, 51J...Contact part, 52...Accessory connector part, 52A...Accessory connector part, 52B...Accessory connector part, 52C...Accessory connector part, 52D...Accessory connector part, 52E...Accessory connector part, 52F...Accessory connector part, 52G...Accessory connector part, 52H...Accessory connector part, 52J...Accessory Sari connector section, 61...First base section, 61A...First base section, 61B...Base section, 61C...Base section, 62...Second base section, 62A...Second base section, 62B...Handle section, 63...Optional support section, 63A...Optional support section, 63B...Optional support section, 63C...Optional support section, 64...Optional mounting section, 64A...Optional mounting section, 64B...Optional mounting section, 64C...Optional mounting section, 65...Rotating section, 66...Optional connector section, 66A...Optional connector section, 66B...Optional connector section, 66C...Optional connector section, 67 ...cable, 68...third accessory mounting section, 71...base section, 72...extension mounting section, 73...accessory connector section, 74...arm section, 81...operation signal acquisition section, 82...identification data acquisition section, 83...light control section, 84...control data storage section, 100...lighting system, 101...light system, 102...light system, 103...light system, 104...light system, 105...light system, 106...light system, 107...light system, 108...light system, 110...first light module, 111...first housing, 112...module receiver 112A...First terminal, 112B...Engaged part, 113...First light-emitting part, 114...Receiving terminal, 115...Power receiving part, 116...Lock button, 117...Engaging part, 118...Battery mounting part, 119...Power terminal, 120...Second light module, 121...Second housing, 122...Second terminal, 123...Second light-emitting part, 125...Interface, 126...Lock button, 127...Engaging part, 130...Second light module, 130A...Second light module, 130B...Second light module, 131...Second housing, 132...Second terminal, 133...Second light-emitting part,135...Interface, 138...Module receiving section, 140...Relay module, 141...First relay interface, 142...Second relay interface, 143...Lock button, 144...Lock button, 145...Engaging section, 146...Engaging section, 150...Battery, 151...First battery, 152...Second battery, 160...Base, 161...Plate section, 162...Front leg section, 163...Rear leg section, 164...Handle section, 165...Module receiving section, 1 65A...Power terminal, 165B...Engaged part, 166...Battery mounting part, 170...Power receiving part, 180...Base, 181...Tripod, 182...Pole, 183...Battery box, 185...Module receiving part, 190...Base, 191...Plate part, 192...Legs, 193...Object, 195...Module receiving part, 200...Module receiving part, 311...Mounting surface, 313...Rail, 314...Protrusion, 315...Release button, 316...Power terminal, 317...Pass Signal terminal, 421G...light-emitting part, 422G...light-emitting part, 431B...first housing part, 432B...second housing part, 431G...housing part, 432G...housing part, 441G...light-emitting part, 442G...light-emitting part, 451G...rotating part, 452G...rotating part, 471G...power switch, 472G...power switch, 511A...base part, 512A...movable part, 513A...connecting part, 514A...connecting part, 515A...lever, 516A...rotating part, 511C...base 512C…movable part, 513C…rotating part, 511D…first clip part, 512D…second clip part, 513D…rotating part, 511E…first clamp part, 512E…second clamp part, 511F…belt part, 512F…buckle part, 511G…base part, 512G…arm part, 513G…arm part, 514G…arm part, 511J…screw hole, 651A…rotating part, 652A…rotating part, 1000…lighting system, HX…rotating shaft, VX…rotating shaft.

Claims

1. A first light module having a first housing, a module receiving section disposed in the first housing, a first light-emitting section supported by the first housing, and a power receiving section disposed in the first housing, The first housing includes a first battery mounting section into which the first battery is mounted, A second light module having a second housing, an interface disposed in the second housing, and a second light-emitting section supported by the second housing, The device comprises a base having a second battery mounting section into which a second battery is mounted, and a base module receiving section, The first light module and the second light module are mechanically and electrically connected by the module receiving section and the interface. The first light module and the base are mechanically and electrically connected by the power supply receiving unit and the base module receiving unit. Power from the second battery is supplied to the first light module via the base. Power from at least one of the first battery and the second battery is supplied to the second light module via the first light module. Lighting system.

2. The module receiving portion has a first terminal and an engaged portion, The interface has a second terminal connected to the first terminal and an engaging portion that engages with the engaged portion. The lighting system according to claim 1.

3. The aforementioned engaging portion is biased, By operating the lock button, the engagement and disengagement of the engaging portion and the engaged portion can be switched. The lighting system according to claim 2.

4. The interface rotates relative to the second housing, The lighting system according to claim 1.

5. The first light module and the second light module, when connected to each other, rotate relative to each other around a pivot axis parallel to the light-emitting surface of the first light-emitting unit. The lighting system according to claim 1.

6. At least a portion of the first housing is arranged around the first light-emitting portion, The module receiving section is located on the side of the first housing, The lighting system according to claim 1.

7. The side surface of the first housing includes a first side surface facing a first direction and a second side surface facing a second direction opposite to the first direction, The module receiving section is arranged on the first side and the second side, The lighting system according to claim 6.

8. The side surface of the first housing includes a third side surface facing a third direction which is the intersection of the first and second directions, The module receiving section is located on the third side, The lighting system according to claim 7.

9. The power receiving unit is located on the side of the first housing, The lighting system according to claim 6.

10. The first housing has multiple sides facing in different directions from one another, The power receiving unit is positioned on a side different from the side on which the module receiving unit is positioned. The lighting system according to claim 9.

11. The power receiving unit rotates relative to the first housing, The lighting system according to claim 1.

12. The power receiving unit has a receiving terminal connected to the power terminal of the base module receiving unit, and an engaging portion that engages with the engaged portion of the base. The lighting system according to claim 1.

13. The power receiving unit and the interface have the same structure. The lighting system according to claim 1.

14. The second light module does not have a module receiving section. The lighting system according to claim 1.

15. The second light module has a module receiving portion having the same structure as the module receiving portion of the first light module. The lighting system according to claim 1.

16. The first housing and A module receiving section is arranged in the first housing and to which the second light module is mechanically and electrically connected, A first light-emitting unit supported by the first housing, A power receiving unit is located in the first housing, The first housing includes a first battery mounting section into which a first battery is mounted, The power receiving unit is connected to a base module receiving unit provided on the base, and receives power from a second battery mounted on a second battery mounting unit provided on the base via the base module receiving unit. Power is supplied to the second light module from at least one of the first battery and the second battery. First light module.

17. The module receiving portion has a first terminal connected to the second terminal of the second light module, and an engaged portion that engages with the engaging portion of the second light module. The first light module according to claim 16.

18. With the second light module connected, the first light-emitting unit rotates relative to the second light module around a pivot axis parallel to the light-emitting surface of the first light-emitting unit. The first light module according to claim 16.

19. At least a portion of the first housing is arranged around the first light-emitting portion, The module receiving section is located on the side of the first housing, The first light module according to claim 16.

20. The side surface of the first housing includes a first side surface facing a first direction and a second side surface facing a second direction opposite to the first direction, The module receiving section is arranged on the first side and the second side, The first light module according to claim 19.

21. The side surface of the first housing includes a third side surface facing a third direction which is the intersection of the first and second directions, The module receiving section is located on the third side, The first light module according to claim 20.

22. The power receiving unit is located on the side of the first housing, The first light module according to claim 19.

23. The first housing has multiple sides facing in different directions from one another, The power receiving unit is positioned on a side different from the side on which the module receiving unit is positioned. The first light module according to claim 22.

24. The power receiving unit rotates relative to the first housing, The first light module according to claim 16.

25. The power receiving unit has a receiving terminal connected to the power terminal of the base and an engaging portion that engages with the base. The power receiving unit receives power from the base. The first light module according to claim 16.

26. The second housing and An interface arranged in the second housing, to which the first light module is mechanically and electrically connected, The second light-emitting part is supported by the second housing, The first light module comprises an engaging portion that engages with the engaged portion, Power is supplied from the first light module, When the interface is connected to the first light module, it rotates relative to the first light module about a pivot axis parallel to the light-emitting surface of the first light module. The aforementioned engaging portion is biased, By operating the lock button provided on the interface, the engagement and disengagement of the engaging portion and the engaged portion can be switched. Second light module.

27. The interface has a second terminal connected to a first terminal of the first light module and an engaging portion that engages with the engaged portion of the first light module. The second light module according to claim 26.

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