Luminaire

Abstract

To provide a luminaire capable of easily removing a light source unit.SOLUTION: A luminaire X includes: a light source unit in which a light source module is mounted on one side in the first direction of a light source base plate 11; a power supply unit in which a power supply circuit is mounted on the other side in the first direction of a power supply base plate; a pair of connection tools 5 for connecting both end parts of the second direction orthogonal to the first direction in the light source base plate 11 and the power supply base plate in the first direction; and an arm mounted on the pair of connection tools 5 and for mounting on a construction material. The light source unit includes a first engagement piece part 114. The connection tool 5 includes a first engagement groove part 511 with which the first engagement piece part 114 is engaged and a first receiving part 513 which receives the first engagement piece part 114. The first receiving part 513 can receive the first engagement piece part 114 from the first direction, and the first engagement groove part 511 extends in the third direction orthogonal to the first direction and the second direction.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a lighting device in which a light source unit and a power supply unit are connected by a connector. [Background technology]

[0002] As a lighting device, one has been proposed in which a light source unit and a power supply unit are supported (fixed) on a support framework (for example, Patent Document 1). In this lighting device, the light source unit is dropped from top to bottom onto the support framework, and the corners of the light source unit are fixed in place with the main mounting parts supporting them from below, and the power supply unit is fixed to the support framework above the light source unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-25151 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described lighting device, when the light source unit is to be removed from the support framework, the power supply unit must be removed from the support framework, and the light source unit cannot be easily removed. An object of the present invention (Invention 1) is to provide a lighting device from which the light source unit can be easily removed. [Means for solving the problem]

[0005] The lighting device according to the present invention (Invention 1) comprises a light source unit having a light source module attached to one side in a first direction of a light source base plate, a power supply unit having a power circuit attached to the other side in the first direction of a power supply base plate, a pair of connectors that connect both ends of the light source base plate and the power supply base plate in a second direction perpendicular to the first direction in the first direction, and arms that are attached to the pair of connectors and are used for attachment to construction materials, wherein one of the light source unit and the connector has a first engagement piece portion, and the other of the light source unit and the connector has a first engagement groove portion that engages with the first engagement piece portion and a first receiving portion for receiving the first engagement piece portion, the first receiving portion being capable of receiving the first engagement piece portion from the first direction, and the first engagement groove portion extending in a third direction perpendicular to the first direction and the second direction.

[0006] The lighting device according to the present invention (Invention 1) comprises a light source unit having a light source module attached to one side in a first direction of a light source base plate, a power supply unit having a power supply circuit attached to the other side in the first direction of a power supply base plate, a pair of connectors that connect both end portions of the light source base plate and the power supply base plate in a second direction perpendicular to the first direction in the first direction, and arms that are attached to the pair of connectors and are used for attachment to a building material, the connectors comprising a first connector and a second connector, one of the light source unit and the first connector having a light source side first engagement piece portion, and the other of the light source unit and the first connector having a light source side first engagement piece portion. one of the light source unit and the second connector has a light source side second engagement piece portion, and the other of the light source unit and the second connector has a light source side second engagement groove portion that receives the light source side second engagement piece portion and engages with the light source side second engagement piece portion, the light source side first engagement piece portion rotatably engages with the light source side first engagement groove portion around a rotation axis in a third direction that is perpendicular to the first direction and the second direction, and the light source side second engagement piece portion becomes engageable with the light source side second engagement groove portion when the light source side first engagement piece portion rotates and the light source base plate becomes perpendicular to the first direction. [Effects of the Invention]

[0007] According to the above configuration, the light source unit can be easily removed. [Brief explanation of the drawings]

[0008] [Figure 1] 1A and 1B are perspective views of an illumination device according to a first embodiment, where FIG. 1A is a view from the front side and FIG. 1B is a view from the back side. [Figure 2] 1A and 1B are perspective views of the lighting device in an exploded state, where FIG. 1A is a view from the front side and FIG. 1B is a view from the back side. [Figure 3] 1A and 1B are perspective views of the light source unit in an exploded state, where FIG. 1A is a view from the back side, and FIG. 1B is a view from the front side. [Figure 4] 1A is a perspective view of the power supply unit from the rear with the power supply cover removed, and FIG. 1B is a perspective view of the power supply unit from the rear with the power supply cover, terminal block cover, and wireless unit removed. [Figure 5] 1A and 1B are perspective views of the power supply unit in an exploded state, where FIG. 1A is a view from the back side, and FIG. 1B is a view from the front side. [Figure 6] 1A and 1B are perspective views of the disassembled arm, where FIG. 1A is a view from the front side and FIG. 1B is a view from the back side. [Figure 7] FIG. 10 is a perspective view showing the state in which the connector is removed from the light source base, as viewed from the back side. [Figure 8] FIG. 10 is a perspective view showing the state in which the connector is removed from the power supply base, as viewed from the back side. [Figure 9] 1(a) is a perspective view seen from the back side of the connector with the second arm detached, and FIG. 1(b) is a perspective view seen from the back side of the connector and the second arm connected together. [Figure 10] 10A and 10B are diagrams illustrating the dimensional relationship between the connector, the light source base, and the power supply base. [Figure 11] 10A and 10B are perspective views illustrating the attachment of the light source base to the connector, in which FIG. 10A shows the state before the light source base is slid, and FIG. 10B shows the state after the light source base is slid. [Figure 12]10A and 10B are perspective views illustrating the attachment of the power supply base to the connector, in which FIG. 10A shows the state before the power supply base is slid, and FIG. 10B shows the state after the power supply base is slid. [Figure 13] 10A and 10B are perspective views of an illumination device according to a second embodiment, where FIG. 10A is a view from the front side and FIG. [Figure 14] FIG. 2 is a perspective view of the lighting device in an exploded state, seen from the back side. [Figure 15] FIG. 10 is a perspective view showing the state in which the connector is removed from the light source base, as viewed from the back side. [Figure 16] 10A is a perspective view of the power supply base from which the connector has been removed, as seen from the back side, and FIG. 10B is an enlarged view of the other end of the power supply base. [Figure 17] 1(a) is a perspective view seen from the back side of the connector with the second arm detached, and FIG. 1(b) is a perspective view seen from the back side of the connector and the second arm connected together. [Figure 18] 10A and 10B are diagrams illustrating the dimensional relationship between the connector, the light source base, and the power supply base. [Figure 19] 1A and 1B are perspective views of the fixing device and the functional unit in an exploded state, where FIG. 1A is a view from the front side, and FIG. 1B is a view from the back side. [Figure 20] 10A and 10B are perspective views illustrating the attachment of the light source base to the connector, in which FIG. 10A shows the state in which one side of the light source base is attached, and FIG. 10B shows the state in which the other side is attached. [Figure 21] 10A and 10B are perspective views illustrating the attachment of the power supply base to the connector, in which FIG. 10A shows the state in which one side of the power supply base is attached, and FIG. 10B shows the state in which the other side is attached. [Figure 22] FIG. 11 is a perspective view of the illumination device according to the third embodiment, as seen from the back side. [Figure 23] (a) is an oblique view from the back side of the state in which the connector, device connector, and second arm have been removed, (b) is an oblique view from the front side of the state in which the connector and second arm are connected, and (c) is an oblique view from the back side of the state in which the connector and second arm are connected. [Figure 24]This is a perspective view from the back showing opposing connectors connected by a device connector. [Figure 25] (a) is a perspective view of the state before the four connectors are connected with the device connector, (b) is a view from the back of the connected state, and (c) is a perspective view of the connected state from the back. DETAILED DESCRIPTION OF THE INVENTION

[0009] <Summary> A first lighting device according to one aspect of the first embodiment comprises a light source unit having a light source module attached to one side of a light source base plate in a first direction, a power supply unit having a power supply circuit attached to the other side of a power supply base plate in the first direction, a pair of connectors that connect both ends of the light source base plate and the power supply base plate in a second direction perpendicular to the first direction in the first direction, and arms that are attached to the pair of connectors and are used for attachment to construction materials, wherein one of the light source unit and the connector has a first engagement piece, and the other of the light source unit and the connector has a first engagement groove that engages with the first engagement piece and a first receiving portion for receiving the first engagement piece, the first receiving portion being capable of receiving the first engagement piece from the first direction, and the first engagement groove extending in a third direction perpendicular to the first direction and the second direction. This allows the light source unit to be connected to the connector even when the power supply unit is connected to the connector. Furthermore, because the first engagement groove extends in the third direction, even in a lighting unit formed by connecting two lighting devices in the third direction, by positioning the first engagement groove on the opposite side (outside) of the lighting device adjacent in the third direction, the light source unit of one lighting device can be connected to the connector even when the other lighting device is connected and the power supply unit is connected. Furthermore, even in a lighting unit formed by connecting two lighting devices in the third direction, by making the distance between the lighting devices adjacent in the third direction larger than the dimension of the first receiving portion in the third direction, the light source unit of one lighting device can be connected to the connector even when the other lighting device is connected and the power supply unit is connected. Furthermore, since the light source unit and the power supply unit are connected by a connector, the two units can be connected with a simple structure. The first engaging piece portion (and the same goes for the first receiving portion) may be on the light source unit or on the connector, or in a pair of connectors, the first engaging piece portion may be provided on one connector and the first receiving portion may be provided on the other connector. The first receiving portion may receive the first engaging piece portion from one side in the first direction, or may receive the first engaging piece portion from the other side.

[0010] A second lighting device according to one aspect of the first embodiment is the first lighting device of the first embodiment, wherein the dimension of the first receiving portion in the third direction is larger than the dimension of the first engagement piece in the third direction. This allows the first engagement piece to be easily received.

[0011] A third lighting device according to one aspect of the first embodiment is the first or second lighting device of the first embodiment, wherein one of the power supply unit and the connector has a second engagement piece portion, and the other of the power supply unit and the connector has a second engagement groove portion with which the second engagement piece portion engages and a second receiving portion for receiving the second engagement piece portion, and the second engagement groove portion extends in the third direction. This allows the power supply unit to be connected to the connector even when the light source unit is connected to the connector. Furthermore, because the second engagement groove extends in the third direction, even in a lighting unit formed by connecting two lighting devices in the third direction, by positioning the second engagement groove on the opposite side (outside) of the lighting device adjacent in the third direction, the power supply unit of one lighting device can be connected to the connector even when the other lighting device is connected and the light source unit is connected. Furthermore, even in a lighting unit formed by connecting two lighting devices in the third direction, by making the spacing between the lighting devices adjacent in the third direction larger than the dimension of the second receiving portion in the third direction, the power supply unit of one lighting device can be connected to the connector even when the other lighting device is connected and the light source unit is connected. Furthermore, since the light source unit and the power supply unit are connected by a connector, the two units can be connected with a simple structure. The second engagement piece portion (and the same goes for the second receiving portion) may be on the power supply unit or on the connecting device, or in a pair of connecting devices, the first engagement piece portion may be provided on one connecting device and the first receiving portion may be provided on the other connecting device. The second receiving portion may receive the second engaging piece portion from one side in the first direction, or may receive the second engaging piece portion from the other side. The direction (orientation) of the second engagement groove extending from the second receiving portion in the third direction may be the same as or different from the direction (orientation) of the first engagement piece extending from the second receiving portion in the third direction. However, when multiple lighting devices are adjacent in the third direction, it is easier to attach and detach the power supply unit and the light source unit if they are oriented in the same direction.

[0012] A fourth lighting device according to one aspect of the first embodiment is the first to third lighting devices of the first embodiment, wherein the dimension of the second receiving portion in the third direction is larger than the dimension of the second engagement piece in the third direction. This allows the second engagement piece to be easily received.

[0013] A fifth lighting device according to one aspect of the first embodiment is such that, in the first to fourth lighting devices of the first embodiment, the first receiving portion and the second receiving portion are notched portions of the connector, the first engaging groove portion is connected to the first engaging piece portion on the opposite side in the third direction to a first receiving opening in the first receiving portion that receives the first engaging piece portion, the second engaging groove portion is connected to the second engaging piece portion on the opposite side in the third direction to a second receiving opening in the second receiving portion that receives the second engaging piece portion, and an opening edge of either or both of the first receiving portion and the second receiving portion is curved. This allows the first receiving portion to easily receive the first engaging piece portion, and the second receiving portion to easily receive the second engaging piece portion.

[0014] A sixth lighting device according to one aspect of the first embodiment is the first to fifth lighting devices of the first embodiment, wherein the power supply base plate has a first abutment portion erected on one side or the other side of the first direction, the connector has a second abutment portion erected on one side or the other side of the first direction, and the first abutment portion and the second abutment portion are fixed by a fixing device in an abutting or close proximity state based on the second engagement piece portion engaging with the second engagement groove portion. This makes it difficult for the second engagement piece portion to move from the second engagement groove portion to the side where the engagement is released.

[0015] A seventh lighting device according to one aspect of the first embodiment is the first to sixth lighting devices of the first embodiment, wherein the arms include a first arm attached to the construction material and a second arm attached to the connector, one of the first arm and the second arm having an axis parallel to the second direction, the other of the first arm and the second arm having a hole into which the axis fits, the first arm and the second arm being rotatably connected around the central axis of the axis by the axis fitting into the hole, one of the first arm and the second arm having a notch along the central axis of the axis, the other of the first arm and the second arm having a regulating portion disposed within the notch, the notch having a contact portion with which the regulating portion comes into contact when the first arm and the second arm rotate a predetermined angle around the central axis of the axis. This allows the first arm and the second arm to be rotatably connected with a simple structure while restricting the range of rotation.

[0016] A first lighting device according to one aspect of the second embodiment includes: a light source unit in which a light source module is attached to one side of a light source base plate in a first direction; a power supply unit having a power supply circuit mounted on the other side of the power supply base plate in the first direction; a pair of connectors that connect both end portions of the light source base plate and the power supply base plate in a second direction perpendicular to the first direction in the first direction; an arm attached to the pair of connectors and for attachment to a construction material; Equipped with The connector comprises a first connector and a second connector, one of the light source unit and the first connector has a light source-side first engagement piece, the other of the light source unit and the first connector has a light source side first engagement groove portion that receives the light source side first engagement piece portion and engages with the light source side first engagement piece portion, one of the light source unit and the second connector has a light source side second engagement piece, the other of the light source unit and the second connector has a light source side second engagement groove portion that receives the light source side second engagement piece portion and engages with the light source side second engagement piece portion, the light-source-side first engagement piece portion is rotatably engaged with the light-source-side first engagement groove portion around a rotation axis in a third direction orthogonal to the first direction and the second direction, When the light source side first engagement piece rotates and the light source base plate becomes perpendicular to the first direction, the light source side second engagement piece becomes engageable with the light source side second engagement groove. This allows the light source unit to be connected to the connector even when the power supply unit is connected to the connector. Also, because the light source-side first engagement piece is rotatable around the rotation axis extending in the third direction, the light source unit of the lighting device can be connected to the connector even when two lighting devices are connected in the second or third direction and the power supply units are connected. Furthermore, since the light source unit and the power supply unit are connected by a connector, the two units can be connected with a simple structure. The light source side first engagement piece portion (same for the light source side first engagement groove portion) may be on the light source unit or on the connector, and the light source side second engagement piece portion (same for the light source side second engagement groove portion) may be on the light source unit or on the connector.

[0017] A second illumination device according to one aspect of the second embodiment is the first illumination device of the second embodiment, one of the power supply unit and the first connector has a power supply side first engagement piece, the other of the power supply unit and the first connector has a power supply side first engagement groove that receives the power supply side first engagement piece and engages with the power supply side first engagement piece, one of the power supply unit and the second connector has a power supply side second engagement piece, the other of the power supply unit and the second connector has a second engagement portion with which the power supply side second engagement piece engages, the power supply side first engagement piece portion engages with the power supply side first engagement groove portion so as to be rotatable about a rotation axis in a third direction orthogonal to the first direction and the second direction, The power supply side second engagement piece becomes engageable with the power supply side second engagement part when the power supply side first engagement piece rotates and the power supply base plate becomes perpendicular to the first direction. This allows the power supply unit to be connected to the connector even when the light source unit is connected to the connector. Also, because the power supply-side first engagement piece is rotatable around the rotation axis extending in the third direction, the power supply unit of the lighting device can be connected to the connector even when two lighting devices are connected in the second or third direction and the light source units are connected. Furthermore, since the light source unit and the power supply unit are connected by a connector, the two units can be connected with a simple structure. The power supply side first engagement piece portion (same for the power supply side first engagement groove portion) may be on the power supply unit or on the connector, and the power supply side second engagement piece portion (same for the power supply side second engagement groove portion) may be on the light source unit or on the connector.

[0018] A third illumination device according to one aspect of the second embodiment is the first or second illumination device according to the second embodiment, the light source side first engagement piece is provided on the light source base plate, the light source side first engagement piece has a first region extending in the second direction and a second region extending in the first direction from a tip of the first region, the light source side first engagement groove is configured to allow the second region to pass therethrough; After the second region of the light source side first engagement piece portion passes through the light source side first engagement groove, the first region of the light source side first engagement piece portion engages within the light source side first engagement groove portion. This allows the light source side first engagement piece portion to be rotatably engaged with the light source side first engagement groove portion.

[0019] A fourth illumination device according to one aspect of the second embodiment is the first to third illumination devices of the second embodiment, the light source side second engagement piece is provided on the light source base plate, The light source side second engagement piece bends from the first direction to the second direction, and at least one of the light source side second engagement piece and the portion in which the light source side second engagement groove is formed is elastically deformable in the second direction. This allows the light source side second engagement piece portion to be engaged with the light source side second engagement groove portion.

[0020] A fifth illumination device according to one aspect of the second embodiment is the first to fourth illumination devices of the second embodiment, the power supply side first engagement piece is provided on the power supply base plate, The power supply side first engagement piece bends from the first direction to the second direction and engages within the power supply side first engagement groove. This allows the power supply side first engagement piece to rotatably engage with the power supply side first engagement groove.

[0021] A sixth illumination device according to one aspect of the second embodiment is configured such that, in the first to fifth illumination devices of the second embodiment, the power supply side second engagement piece is provided on the power supply base plate, the power supply side second engagement piece is bent from the second direction to the first direction, The power supply side second engagement portion is configured by a plate-shaped portion of the second connector. This allows the power supply unit to be connected to the connector with a simple structure.

[0022] A seventh illumination device according to one aspect of the second embodiment is the first to sixth illumination devices of the second embodiment, the light source side first and second engagement pieces are integrally formed with the light source base plate, the power supply side first and second engagement pieces are integrally formed with the power supply base plate, The light source base and the power supply base are made of thin metal plates. This allows the light source unit and the power supply unit to be easily connected. The configuration of the illumination device of the first embodiment may be combined with the configuration of the illumination device of the second embodiment.

[0023] First Embodiment 1. Overall As shown in FIG. 1, the lighting device X includes a light source unit 1 on one side in the first direction and a power supply unit 3 on the other side in the first direction, with the light source unit 1 and the power supply unit 3 being adjacent to each other in the first direction via a connector 5. The connector 5 connects the second direction end sides of the light source unit 1 and the power supply unit 3. The connector 5 is attached to an arm 7, and the arm 7 is attached to a construction material (not shown). The arm 7 is attached to the construction material using, for example, a wire, a screw, or the like, and here, a hanging bolt 91 is used. The direction perpendicular to the first and second directions is defined as a third direction. The following description will be based on the assumption that the arm 7, the power supply unit 3, and the light source unit 1 are aligned in a straight line. The side from which light is emitted is also called the front side, and the opposite side is also called the back side, and one side in the first direction is the front side. The direction will be explained using FIG. One side (front side) in the first direction is the side where the light source unit 1 is provided, and the other side (back side) in the first direction is the side where the power supply unit 3 is provided. One side of the second direction is the side where a wireless unit 81 (described later) is provided, and the other side of the second direction is the side where a terminal block cover 37 (described later) is provided. One side of the third direction is the side where the terminal block cover 37 described later and the wireless unit 81 described later are provided, and the other side of the third direction is the side where the terminal block cover 37 described later and the wireless unit 81 described later are not provided. Each component will be described below.

[0024] 2.Each configuration (1) Light source unit The explanation will be mainly based on FIG. The light source unit 1 includes at least a light source base plate 11 and a light source module 13 arranged on one side of the light source base plate 11 in the first direction. The light source unit 1 here includes a light source cover 15 that is attached to the light source base plate 11 and covers the light source module 13 from one side, and a heat dissipation means 17 that is attached to the other side of the light source base plate 11 in the first direction. Note that here, the light source unit 1 further includes a diffusion sheet 19 that is arranged between the light source module 13 and the light source cover 15.

[0025] The light source module 13 includes a light source substrate 131 and a plurality of light emitting elements (for example, LEDs) 133. The light source module 13 is attached to the light source base plate 11 using, for example, screws 139 or the like. The light source cover 15 is made of a light-transmitting material and has a box portion 151 corresponding to the light source module 13 and a protruding portion 153 protruding in the first direction and the second direction from the opening end of the box portion 151, and is fixed to the light source base plate 11 using, for example, screws 159, with the protruding portion 153 abutting against the light source base plate 11 from one side in the first direction. The light source cover 15 has grain (concave and convex) and Fresnel grooves (concentric circles) formed on the inner surface facing the light source module 13. Here, the heat dissipation means 17 has one or more heat dissipation fins 171 made by bending a thin metal plate, and is attached to the light source base plate 11 by, for example, welding, screws, etc. There are multiple heat dissipation fins 171, which are bent, for example, into a U-shape and aligned, for example, in the second direction or the third direction.

[0026] The light source base plate 11 has a light source base main body 110, a pair of bent portions 111 bent from an end portion in the second direction of the light source base main body 110, and a pair of bent portions 112 bent from an end portion in the third direction of the light source base main body 110. For convenience of distinguishing between the bent portions 111 and 112, the bent portion 111 in the second direction will be referred to as a "second bend" and the bent portion 112 in the third direction will be referred to as a "third bend." The light source base main body 110 is provided with a screw hole 110a for the light source module 13, a screw hole 110b for the light source cover 15, a through hole for wiring to connect the light source module to the power supply circuit (a light source base side bush 117 is fitted into the through hole), etc.

[0027] The second bent portion 111 and the third bent portion 112 are bent to the other side in the first direction. The second bent portion 111 has a connecting means 113 for connecting to the connector 5. The connecting means 113 here has an engaging piece portion (an example of a first engaging piece portion) 114 that engages with an engaging groove portion 511 of the connector 5. The connecting means 113 also has a fixed portion 115 that is fixed to the connector 5 via a fixing device 119. Here, in order to distinguish between the connecting means 113 etc. on the light source unit 1 side and the connecting means 315 etc. on the power supply unit 3 side, the light source unit 1 side is marked with "light source side" as in "light source side connecting means", and the power supply unit 3 side is marked with "power supply side" as in "power supply side connecting means". The light source side connecting means 113 are provided in pairs spaced apart in the third direction. The light source side engaging piece 114 is located on the inside in the third direction, and the light source side fixed part 115 is located on the outside in the third direction of the light source side engaging piece 114. Note that the light source side engaging piece 114 may be located on the outside in the third direction, and the light source side fixed part 115 may be located on the inside in the third direction. The third bent portion 112 has an L-shaped engagement groove portion 116 with which the engagement piece portion 154 of the light source cover 15 engages.

[0028] (2) Power supply unit The explanation will be given mainly with reference to FIGS. The power supply unit 3 includes at least a power supply base plate 31, a power supply circuit 32 arranged on the other side of the power supply base plate 31 in the first direction, and a power supply cover 33 that covers the power supply circuit 32. The power supply unit 3 here comprises a mounting plate 35 for mounting the terminal block 34 and the wireless unit 81, an insulating sheet 36 for ensuring the insulation of the power supply circuit 32, and a terminal block cover 37 for covering the terminal block 34.

[0029] The power supply circuit 32 includes a power supply board 321 and a plurality of electronic components (not shown). The power supply board 321 is provided with a connector 323 for connection to the terminal block 34 and a connector 324 for connection to the wireless unit 81. The power supply board 321 is fixed to the power supply base plate 31 using screws 329 or the like. The power supply cover 33 has a box portion 331 that is open on one side in the first direction, a protruding portion 333 that protrudes in the second or third direction from the open end of the box portion 331, and an engaging portion 335 that extends in the second or third direction from the open end of the box portion 331, and is fixed to the power supply base plate 31 using, for example, screws 339, with the engaging portion 335 engaging with the engaging groove portion 310C of the power supply base plate 31 and the protruding portion 333 abutting against the power supply base plate 31 from the other side in the first direction. The power supply cover 33 has an opening 336a for the terminal block 34 and an opening 336b for the wireless unit 81 in the peripheral wall portion 336. The mounting plate 35 is provided in an upright state relative to the power supply base plate 31. The mounting plate 35 has a main body portion 351 that is U-shaped when viewed from the first direction, and a bent portion 352 that bends from the end of the main body portion 351 in the first direction along the power supply base main body portion 310 of the power supply base plate 31. The mounting plate 35 is fixed to the power supply base plate 31 using, for example, screws 359, with the bent portion 352 abutting against the power supply base main body portion 310.

[0030] The power supply base plate 31 has a power supply base main body 310, bent portions 311 and 312 that bend in the first direction from both end portions of the power supply base main body 310 in the second direction, and a bent portion 313 that bends in the first direction from an end portion of the power supply base main body 310 in the third direction. To distinguish between the bent portions 311, 312, and 313, the bent portions 311 and 312 in the second direction are referred to as "second bent portions," and the bent portion 313 in the third direction is referred to as "third bent portion." Here, the second bent portion 311 and the third bent portion 313 are bent to one side in the first direction, and the second bent portion 312 is bent to the other side. The power supply base main body 310 is provided with a screw hole (boss screw hole) 310a for the power supply circuit 32, a screw hole 310b for the power supply cover 33, a through hole for wiring to connect the light source module 13 and the power supply circuit 32 (a power supply base side bushing 319 is fitted into the through hole), an engagement groove 310c for an engagement portion 335 of the power supply cover 33, and a through groove 310e for an engagement portion 371 of the terminal block cover 37. The power supply base main body 310 also has a notch 310d at its end in the second direction and at the center in the third direction, which is recessed inward in the second direction. The bent portion facing the notch 310d is a second bent portion 312.

[0031] As shown in Fig. 4, the power supply base plate 31 has a power supply side connecting means 315 for connecting to the connector 5. Here, the power supply side connecting means 315 is composed of a power supply side engaging piece portion 316 that engages with the power supply side engaging groove portions 531, 541 (see Fig. 8) of the connector 5, and a power supply side fixed portion 317 (an example of a "first abutment portion") that is fixed to the connector 5 via a fixing device 118. The power supply side engaging pieces 316 are located at the end of the power supply base main body 310 in the second direction, on both sides of the notched portion 310d in the third direction, and are located more inward than the second bent portion 311 in the second direction. The power supply side fixed portion 317 is provided on a plate portion 318 (see Figure 8) that stands upright from a portion facing the notch 310d from the third direction and extends perpendicular to the third direction, and has a through hole 317a formed in the plate portion 318 and its surrounding portion 317b. The power supply side fixed portion 317 is provided on the side opposite to the side where the power supply unit 3 (power supply base plate 31) is slid in the third direction when attaching the power supply unit 3 (power supply base plate 31) to the connector 5, with respect to the notch 310d.

[0032] (3) Arm 1 and 2, the arm 7 is used to attach the device main body to a building material. The device main body is made up of a light source unit 1 and a power supply unit 3 connected by a connector 5. The arm 7 includes a first arm 71 attached to the construction material, and a second arm 72 attached to the device main body (connector 5).

[0033] This will be explained using Figure 6. (3-1) First arm The first arm 71 comprises a fixed plate portion 711 that extends in the second direction and is fixed to a construction material, and an extension plate portion 712 that extends in the thickness direction from both ends of the fixed plate portion 711 in the second direction toward the device main body. Here, the first arm 71 has bending portions 713 that bend from both ends of the short side direction (a direction perpendicular to the second direction and the thickness direction) of the fixed plate portion 711 toward the opposite side of the construction material, and bending portions 714 that bend from both ends of the short side direction (a direction perpendicular to the extension direction and the thickness direction) of the extension plate portion 712 in the second direction. The fixed plate portion 711 has a plurality of (for example, two) through holes 711a for the suspension bolts 91. The first arm 71 has a connecting portion 74 for connecting to the second arm 72 so as to be rotatable about the second direction as a rotation axis. The connecting portion 74 is provided on the extension plate portion 712 on the opposite side to the fixed plate portion 711. The connecting portion 74 has a hole portion 741 into which the shaft portion 723 of the second arm 72 is rotatably fitted. Here, the connecting portion 74 has a first bent portion 742 that bends in a second direction (inward) from the end of the extension plate portion 712 opposite the fixed plate portion 711, and a second bent portion 743 that bends from the bent tip of the first bent portion 742 to the opposite side of the fixed plate portion 711, and has a notch portion 744 that is continuous with the first bent portion 742 and the second bent portion 743. Furthermore, the connecting portion 74 has a bent portion 745 on at least one end surface that faces the opening of the cutout portion 744 from the third direction. Hole 741 is formed by a part of cutout 744. Hole 741 has a semicircular shape that protrudes at least on the side opposite to fixed plate 711. This allows columnar or cylindrical shaft 723 to be rotatably supported. Notched portion 744 is formed so as to extend from hole 741 toward fixed plate portion 711. Notched portion 744 is also formed in first bent portion 742, so that shaft portion 723 and bent portion 725 of second arm 72 can be arranged from fixed plate portion 711 and can be easily connected. The bent portion 745 is bent from the first bent portion 742 toward the second arm 72 in a direction perpendicular to the first bent portion 742 .

[0034] (3-2) Second arm The second arm 72 has a shaft 723 on a plate 721 that is perpendicular to the second direction. The shaft 723 here includes a cylindrical portion and is welded to the plate 721, or in the case of a pin body, the shaft portion is provided so as to pass through a through-hole in the plate 721. Shaft 723 has a threaded portion at its tip, and threadably engages with nut 79 after passing through hole 741 of first arm 71. This allows first arm 71 and second arm 72 to be rotatably connected. The second arm 72 has a bent portion 725 that bends in the second direction at the end of the plate portion 721 on the first arm 71 side. When the second arm 72 is connected to the first arm 71, the bent portion 725 passes through a second bent portion 743 and is disposed within a notched portion 744 of the first arm 71. When the second arm 72 rotates relative to the first arm 71, the bent portion 725 moves within the notched portion 744. When the second arm 72 rotates a predetermined amount in one direction or the other in the rotation direction, the bent portion 725 abuts against an end surface that constitutes the notched portion 744 or the bent portion 745 (corresponding to an example of a contact portion). In other words, the notched portion 744 is formed along the trajectory of the bent portion 725 when the second arm 72 rotates relative to the first arm 71, and is configured so that when the second arm 72 rotates a predetermined amount, the bent portion 725 abuts against the end surface or the bent portion 745. Note that the bent portion 725 is an example of a restricting portion. The second arm 72 has an arm side engaging piece 726 that engages with the arm side engaging hole 551 (see Figure 9) of the connecting device 5, and a fixing portion (screw hole 727a) 727 for a fixing device to fix it to the connecting device 5 via a fixing device (screw) 78, on the plate portion 721.

[0035] (4) Connector The connector 5 is made of, for example, a metal plate and also functions as a connecting plate. As shown in FIG. 1 , a pair of connectors 5 are provided on both sides in the second direction, and connect the light source unit 1 and the power supply unit 3 side by side in the first direction. In other words, with the light source unit 1 (light source base plate 11) and the power supply unit 3 (power supply base plate 31) overlapping in the first direction, the connectors 5 connect both ends of the light source base plate 11 and the power supply base plate 31 in the second direction perpendicular to the first direction. More specifically, the connector 5 connects the light source base plate 11 of the light source unit 1 to the power supply base plate 31 of the power supply unit 3. The connector 5 is connected to the light source base plate 11 and the connector 5 is connected to the power supply base plate 31 using an engagement structure and a screw structure. The connector 5 is made of a metal plate, which allows it to be manufactured at low cost. Alternatively, the connector 5 may be connected using an engagement structure and fixed using a screw structure. The connector 5 has at least connecting means 51, 52 for connecting to the light source unit 1 (light source base plate 11) and connecting means 53, 54 for connecting to the power supply unit 3 (power supply base plate 31) on the plate-shaped portion 50. The connector 5 also has a connecting means 55 on the plate-shaped portion 50 for connecting to the arm 7 . For convenience, the connecting portions are referred to as "light source side connecting means," "power source side connecting means," and "arm side connecting means" to distinguish them from one another.

[0036] (4-1) Plate-shaped part The plate-like portion 50 is made by, for example, punching or pressing a metal plate, etc. This allows for an inexpensive and strong construction. 2, the plate-like portion 50 has at least a plate-like portion 501 that is perpendicular to the second direction. The plate-like portion 50 here has first bent portions 503 that bend in the second direction from both ends of the plate-like portion 501 in the third direction, a second bent portion 505 that bends in the second direction from one end of the plate-like portion 501 in the first direction, and a third bent portion 507 that bends in the second direction from the other end of the plate-like portion 501 in the first direction. This enables the plate-like portion 50 to be reinforced. Although the first to third bent portions 503, 505, 507 are bent inward in the second direction, they may be bent outward, or may be bent both inward and outward. Plate-like portion 501 has a rectangular shape that is long in the third direction and extends from the other end in the first direction to the other side. That is, as shown in Fig. 8, plate-like portion 501 has rectangular region 501a that is long in the third direction and extending region 501b that extends from rectangular region 501a. The third bent portions 507 are provided on both sides of the central protruding region 501b in the third direction. The third bent portions 507 abut against or are close to the bent portion 728 of the second arm 72 of the arm 7 (see FIG. 9(b)).

[0037] (4-2) Light source side connection means The following description will be mainly made with reference to FIG. There are two (a pair) light source side connectors 51, 52 spaced apart in the third direction. The light source side connectors 51, 52 are provided at one end (light source side connector 52) of the plate-like portion 50 (rectangular region 501a) in the first direction, or at a portion (light source side connector 51) where the one end and the second bent portion 505 are continuous. In the third direction, the light source side connecting means 51 is located on the side where the light source side engaging piece portion 114 engages (for example, one side), and the light source side connecting means 52 is located on the opposite side to the engaging side (release side). The light source side connecting means 51, 52 have light source side engaging grooves (an example of a first engaging groove) 511, 521 that engage with the light source side engaging piece 114 of the light source base plate 11, and light source side receiving portions (an example of a first receiving portion) 513, 523 that receive the light source side engaging piece 114 from the light source side receiving openings 513a, 523a. The light source side connecting means 51, 52 here further have light source side fixing portions 515, 525 that fix the fixed portion 115 of the light source side connecting means 113 using a fixing device 119 (screw). After the light source side engagement piece 114 of the light source base plate 11 is received through the light source side receiving openings 513a, 523a of the light source side receiving parts 513, 523 (see Figure 11(a)), the light source base plate 11 moves (slides) to one side in the third direction relative to the light source side receiving parts 513, 523, causing the light source side engagement piece 114 to enter and engage with the light source side engagement groove parts 511, 521 (see Figure 11(b)). One side in the third direction of the light source base plate 11 is an engagement side, and the other side is a disengagement side. The light source side receiving portions 513, 523 are located on the disengagement side in the third direction with respect to the light source side engagement groove portions 511, 521. In addition, the light source base plate 11 and the connector 5 may be connected using a connecting means with an engagement structure and a fixing means with a screw-type structure (in other words, although the light source side connecting means 51, 52 are said to have both an engagement structure and a screw-type structure, they may be separate).

[0038] (4-2-1) Light source side engagement groove 7, the light source side engaging piece 114 of this example has a first region 114a that bends inward in the second direction from the second bent portion 111 of the light source base plate 11, and a second region 114b that extends from an end of the first region 114a to the other side in the first direction. In other words, the light source side engaging piece 114 extends in an "L" shape. The first region 114a also extends in the second and third directions. The light source side engagement grooves 511, 521 extend in the third direction, and the width of the groove (dimension in the first direction) is greater than the thickness (dimension in the first direction) of the first region 114a of the light source side engagement piece 114. In addition, the gap in the second direction between the second bent portion 111 and the second region 114b is greater than the thickness of the plate-like portion 50 of the connector 5. This allows the first region 114a of the light source side engagement piece 114 to engage with the light source side engagement grooves 511, 521. 10, the dimension L1 in the third direction of the light source side engagement grooves 511, 521 is 0.5 times or more, preferably 0.6 times or more, the dimension L2 of the light source side engagement piece 114. This ensures a stable engagement relationship. Here, the light source base plate 11 is connected in a state where the second bent portion 111 faces the outer surface of the connector 5. 7, the light source side engagement grooves 511, 521 are configured so that the dimension (groove width) in the first direction increases in the third direction as they approach the light source side receiving portions 513, 523. In other words, the end portions 511a, 521a of the light source side engagement grooves 511, 521 on the light source side receiving openings 513a, 523a side are curved (R-processed) or inclined (chamfered) so as to approach the light source side receiving openings 513a, 523a in the first direction as they move toward the disengagement side in the third direction. This allows the light source side engaging piece 114 to be easily advanced into the light source side engaging grooves 511 and 521 .

[0039] (4-2-2) Light source side receiving part The light source side receiving portions 513, 523 receive the light source side engaging piece 114 from one side in the first direction. That is, the light source side receiving openings 513a, 523a are located on one side in the first direction. As shown in FIG. 10, the dimension L3 in the third direction of the light source side receiving portions 513, 523 is 1.05 times or more, preferably 1.2 times or more, the dimension L2 in the third direction of the light source side engaging piece 114. This makes it possible to easily receive the light source side engaging piece 114. The light source side receiving portions 513 and 523 are connected to the light source side engaging groove portions 511 and 521 on the opposite side to the light source side receiving openings 513a and 523a in the first direction. 7, light source side receiving portion 523 is configured to increase in size in the third direction as it approaches light source side receiving opening 523a in the first direction. In other words, end portion 523b on the disengagement side of light source side receiving portion 523 is curved (R-processed) or inclined (chamfered) so as to move away from light source side engagement groove portion 521 in the third direction as it moves to one side in the first direction.

[0040] (4-2-3) Light source side fixing part Here, screws are used as the fixing devices 119. For this reason, the light source side fixed portion 115 has a through hole 115a for the screw, and the light source side fixing portions 515 and 525 have screw holes 515a and 525a. In addition, the light source base plate 11 and the connecting device 5 may have the light source side fixed portion 115 and the light source side fixing portion 515, 525 as separate structures from the light source side connecting means 51, 52, for example, as the light source side fixed means (115) and the light source side fixing means (515, 525).

[0041] (4-3) Power supply side connection means The following description will be mainly made with reference to FIG. There are two (a pair) power supply side connecting means 53, 54 spaced apart in the third direction. The power supply side connecting means 53, 54 are provided on both sides of the protruding region 501b at the other end of the rectangular region 501a of the plate-shaped portion 50 in the first direction. In the third direction, the power supply side engaging piece 316 is positioned on the engaging side as the power supply side connecting means 53, and the power supply side connecting means is positioned on the disengaging side as the power supply side connecting means . The power supply side connecting means 53, 54 have power supply side engaging grooves (an example of second engaging grooves) 531, 541 that engage with the power supply side engaging pieces 316 of the power supply base plate 31, and power supply side receiving portions (an example of second receiving portions) 533, 543 that receive the power supply side engaging pieces 316 from the power supply side receiving openings 533a, 534a. At least one of the power supply side connecting means 53, 54 here, the power supply side connecting means 54, further has a power supply side fixing portion 545 that fixes the fixed portion 317 of the power supply side connecting means 315 using a fixing device 118 (screw). After the power supply side engagement piece 316 of the power supply base plate 31 is received through the power supply side receiving openings 533a, 543a of the power supply side receiving parts 533, 543 (see Figure 12(a)), the power supply base plate 31 moves (slides) to one side in the third direction relative to the power supply side receiving parts 533, 543, causing the power supply side engagement piece 316 to enter and engage with the power supply side engagement groove parts 531, 541. One side of the power supply base plate 31 in the third direction is the engagement side, and the other side is the disengagement side (see FIG. 12(b)). The power supply side receiving portions 533, 543 are located on the release side in the third direction relative to the power supply side engaging grooves 531, 541. The engaging direction of the power supply unit 3 and the engaging direction of the light source unit 1 may be the same or opposite. The power supply base plate 31 and the connector 5 may be connected by a connecting means with an engaging structure and a fixing means with a screw structure (in other words, although the power supply side connecting means 54 has both an engaging structure and a screw structure, these may be separate).

[0042] (4-3-1) Power supply side engagement groove As shown in the enlarged view, the power supply side engaging piece 316 of this example has a first region 316a that bends in a first direction (to one side of the first direction) from the power supply base plate 31, a second region 316b that bends in a second direction (outward from the first region 316a), and a third region 316c that extends in the first direction (to one side of the first direction) from the second region 316b. In other words, the overall shape is "Z" shaped, stepped. The second region 316b also extends in the second and third directions. The power supply side engagement grooves 531, 541 extend in the third direction, and the width of the groove (dimension in the first direction) is greater than the thickness (dimension in the first direction) of the second region 316b of the power supply side engagement piece 316. Furthermore, the gap in the second direction between the second bent portion 311 and the first region 316a is greater than the thickness of the plate-like portion 50 of the connector 5. This allows the second region 316b of the power supply side engagement piece 316 to engage with the power supply side engagement grooves 531, 541. 10, the dimension L4 in the third direction of the power supply side engaging grooves 531, 541 is 0.5 times or more, preferably 0.6 times or more, the length L5 of the power supply side engaging piece 316. This ensures a stable engaging relationship. Here, the power supply base plate 31 is connected with the second bent portion 311 facing the outer surface of the connector 5 and the first region 316a of the power supply side engagement piece 316 facing the inner surface of the connector 5. 8, the power supply side engagement grooves 531, 541 are configured so that their dimension in the first direction (groove width) increases in the third direction as they approach the power supply side receiving portions 533, 543. In other words, end portions 531a, 541a of the power supply side engagement grooves 531, 531 on the power supply side receiving openings 533a, 543a side of the plate-shaped portion 50 are curved (R-processed) or inclined (chamfered) so as to approach the power supply side receiving openings 533a, 543a in the first direction as they move toward the disengagement side in the third direction. This makes it easier for the power supply side engaging piece 316 to advance into the power supply side engaging grooves 531 and 541 .

[0043] (4-3-2) Power supply side receiving part The power supply side receiving portions 533, 543 receive the power supply side engaging piece 316 from the other side in the first direction. In other words, the power supply side receiving openings 533a, 543a are on the other side in the first direction. As shown in FIG. 10, when the side opposite the power supply side engaging groove 531 is not open (the power supply side receiving portion 533), the dimension L6 in the third direction of the power supply side engaging piece 316 is 1.05 times or more, preferably 1.2 times or more, the dimension L5 in the third direction of the power supply side engaging piece 316. This makes it possible to easily receive the power supply side engaging piece 316. The power supply side receiving portions 533, 543 are connected to the power supply side engaging groove portions 531, 541 on the side opposite to the power supply side receiving openings 533a, 543a in the first direction.

[0044] (4-3-3) Power supply side fixing part Here, a screw (see FIG. 2) is used as the fixing device 118. Therefore, as shown in FIG. 8, the power supply side fixed part 317 has a through hole 317a for the screw, and the power supply side fixing part 545 has a screw hole 545a. The power supply side fixing portion 545 is provided on an extension portion 547 that extends from the end portion on the other side in the first direction of the plate-shaped portion 501, which is the disengagement side relative to the protrusion region 501b, to the end portion on the disengagement side in the third direction of the bending portion 546 that bends in the second direction (inward) from the disengagement side relative to the protrusion region 501b. Here, the extension portion 547 on the connector 5 side and the plate portion 318 of the power supply base plate 31 are perpendicular to the third direction, and come into contact with or close to each other when the power supply unit 3 (power supply base plate 31) is moved in the engagement direction of the third direction and the power supply side engagement piece 316 engages with the power supply side engagement grooves 531, 541. In this contact or close state, the connector 5 is fixed by the fixture 118. The extending portion 547 of the connector 5 is an example of a second contact portion, and the plate portion 318 of the power supply base plate 31 is an example of a first contact portion. Note that, although Figure 8 illustrates an example in which the first abutment portion and the second abutment portion are erected on the other side of the power supply base plate 31 and the connector 5 in the first direction, each abutment portion may also be configured to be provided on one side of the power supply base plate 31 and the connector 5 in the first direction. By doing so, the fixed state in which each abutment portion is fixed by the fixing device in a state of being close to or abutting each other can be made difficult to see from one side and the other in the first direction and one side and the other in the second direction, thereby improving the appearance. When the extension portion 547 on the connector 5 side and the plate portion 318 of the power supply base plate 31 are fixed by the fixing device 118, a gap is present between the end of the power supply-side engagement piece 316 on the engagement side in the third direction and the end of the power supply-side engagement grooves 531, 541 on the engagement side in the third direction, taking into account the component intersection between the connector 5 and the power supply base plate 31. This allows the extension portion 547 on the connector 5 side and the plate portion 318 of the power supply base plate 31 to be fixed in an abutting state by the fixing device 118. Furthermore, the connector 5 and the power supply base plate 31 can be reliably fixed by the fixing device.

[0045] (4-4) Arm side connection means The following description will be mainly made with reference to FIG. The arm-side connecting means 55 is located on the intermediate side in the third direction. Specifically, it is provided in the protruding region 501b of the plate-like portion 501. The arm-side connecting means 55 is composed of an arm-side engaging hole 551 that engages with the arm-side engaging piece 726 of the arm 7 (second arm 72), and an arm-side fixed portion 553 that is fixed to the arm-side fixing portion 727 of the arm 7 (second arm 72) using a fixing device 78 (screw). The arm-side engagement piece 726 extends from one side to the other in the first direction. Engagement is achieved by tilting the coupler 5 (the plate-like portion 50) relative to the second arm 72 (the plate portion 721), inserting the arm-side engagement piece 726 into the arm-side engagement hole 551, and then turning the coupler 5 vertical. In the engaged state, the bent portion 728 of the second arm 72 and the third bent portion 507 of the coupler 5 are close to each other, making it difficult for the engagement to come loose. The arm side fixing portion 727 and the arm side fixed portion 553 are provided on both sides in the third direction of the arm side engaging piece portion 726 and the arm side engaging hole portion 551. The arm side fixing part 727 has a screw hole 727a for a screw 78 (see FIG. 2), and the arm side fixed part 553 has a through hole 553a.

[0046] (5) Other The wireless unit 81 is for wireless communication with an external controller (not shown), and is provided detachably to a terminal (for example, a USB terminal) 811 provided on the mounting plate 35 shown in Fig. 4(b). As a result, when wireless communication is not required, there is no need to provide the wireless unit 81, and it can be implemented inexpensively. The wireless unit 81 accommodates a first wireless module for wireless communication with the controller in a wireless case 812, and the wireless case 812 has a connection terminal for detachably connecting to a terminal 811 on the mounting plate 35 side. Furthermore, when multiple lighting devices are used to perform systematic lighting control, the wireless unit 81 has the function of wirelessly communicating with other lighting devices. In this case, the wireless unit 81 includes a storage medium (such as an SD card) that identifies the wireless unit itself, and further includes a second communication module for, for example, a mesh link for communicating with other lighting devices. The first and second wireless modules are housed interchangeably and can be used as appropriate depending on the purpose.

[0047] 3. Installation method (1) Light source unit (light source base plate) The attachment of the light source unit 1 to the connector 5 will be described with reference to FIG. First, the light source side engaging piece 114 of the light source base plate 11 is aligned with one side in the first direction relative to the light source side receiving portions 513, 523 of the connector 5, and then the light source base plate 11 is moved to the other side in the first direction and placed inside the light source side receiving portions 513, 523. This state is shown in Figure 11(a). Next, with the light source-side engagement piece 114 positioned within the light source-side receiving portion 513, 523, the light source base plate 11 is slid toward the engagement side, which is one side in the third direction, as shown by the arrow in FIG. 11(a). This causes the light source-side engagement piece 144 to engage with the light source-side engagement groove portion 511, 521. This state is shown in FIG. 11(b). During sliding, the width of the end portion on the other side in the third direction of the light source-side engagement groove portion 511, 521 is increased, making it easier to advance the light source-side engagement piece 114 into the light source-side engagement groove portion 511, 521. Then, the fixture 119 is inserted from outside in the second direction through the through hole 115a of the light source side fixed portion 115 of the light source base plate 11 and screwed into the screw holes 515a, 525a of the light source side fixing portions 515, 525 of the connector 5. In this way, the light source unit 1 can be connected to the connector 5 from the space in the first direction, and therefore, this can be done with the power supply unit 3 attached to the connector 5.

[0048] (2) Power supply unit (power supply base plate) The attachment of the power supply unit 3 to the connector 5 will be described with reference to FIG. First, the power supply side engaging piece 316 of the power supply base plate 31 is aligned with the other side in the first direction relative to the power supply side receiving parts 533, 543 of the connector 5, and then the power supply base plate 31 is moved to one side in the first direction and placed within the power supply side receiving parts 533, 543. This state is shown in Figure 12(a). In this state, the second region 316b of the power supply side engaging piece 316 rests on the end face of the power supply side receiving parts 533, 543 of the connector 5 on one side in the first direction, reducing the strain on the user. Next, with the power supply side engagement piece 316 positioned within the power supply side receiving portion 533, 543, the power supply base plate 31 is slid toward the engagement side, which is one side in the third direction, as shown by the arrow in Figure 12(a). This causes the power supply side engagement piece 316 to engage with the power supply side engagement groove portion 531, 541. This state is shown in Figure 12(b). During sliding, the width of the end portion on the other side in the third direction of the power supply side engagement groove portion 531, 541 is increased, making it easier to advance the power supply side engagement piece 316 into the power supply side engagement groove portion 531, 541. Then, the fixing device 118 is inserted from outside in the third direction through the through hole 317a of the power supply side fixed portion 317 of the power supply base plate 31 and screwed into the screw hole 545a of the power supply side fixing portion 545 of the connector 5 (see FIG. 1). In this way, the power supply unit 3 can be connected to the connector 5 from the third direction, and therefore, this can be done with the light source unit 1 attached to the connector 5.

[0049] Second Embodiment 1. Overall As shown in Figures 13 and 14, the lighting device Y has a light source unit 1001 on one side in the first direction and a power supply unit 1003 on the other side in the first direction, adjacent to each other in the first direction via a pair of connectors 1005. The connector 1005 connects the second direction end sides of the light source unit 1001 and the power supply unit 1003. The connector 1005 is attached to an arm 1007, and the arm 1007 is attached to a construction material (not shown). A functional unit 1082 is attached to one of the connectors 1005 via a mounting fixture 1083 . Here, when connecting the light source base plate 1011 to the connector 1005, in the second direction, the configuration related to the side to which the light source base plate 1011 is connected first is marked with "first" and the letter "A" is added to its reference number. Also, the configuration related to the side to which it is connected later is marked with "second" and the letter "B" is added to its reference number. Note that when it is not necessary to distinguish between first and second, the description may be given without the marks "first," "second," "A," and "B." The lighting device Y has substantially the same basic configuration as the lighting device X, and differences therebetween will be described below. In this embodiment, the first, second, and third directions are the same as those in the first embodiment, and the description will be based on the state in which the arm 1007, power supply unit 1003, and light source unit 1001 are aligned in a straight line. The differences will be mainly explained below.

[0050] 2.Each configuration (1) Light source unit As shown in Figures 13 and 14, the light source unit 1001 comprises a light source base plate 1011, a light source module (13), a light source cover 1015, a heat dissipation means 1017, etc., and structurally differs from the first embodiment in the light source side connection means 1113 between the light source base plate 1011 and the connector 1005. The light source side connecting means 1113 of the light source base plate 1011 will be described below with reference to FIG.

[0051] The light source base plate 1011 is made of a metal (e.g., steel, aluminum, etc.) plate member. The light source base plate 1011 has a light source base main body 1110, a pair of second bent portions 1111 bent from the end of the light source base main body 1110 in the second direction, and a pair of third bent portions 1112 bent from the end of the light source base main body 1110 in the third direction, and a light source side first connecting means 1113A and a light source side second connecting means 1113B are provided on the second bent portions 1111. Note that two (pair) of the light source side first connecting means 1113A and the light source side second connecting means 1113B are provided at an interval in the third direction.

[0052] (1-1) First connection means on the light source side The light source side first connecting means 1113A has a light source side first engaging piece 1114A that engages with the light source side first engaging groove 1511A of the first coupler 1005A. The light source side first connecting means 1113A here further has a light source side first fixed portion 1115A that is fixed to the light source side first fixing portion 1515A of the first coupler 1005A via a fixing device 1119. As shown in the enlarged view, the light source side first engagement piece 1114A utilizes a space between a pair of grooves 1114c formed in the second bent portion 1111 and extending in the first direction. This allows the light source side first engagement piece 1114A to be elastically deformable in the second direction. The light source side first engagement piece 1114A has a first region 1114a that bends from the second bent portion 1111 in the second direction, and a second region 1114b that extends from the first region 1114a to the other side in the first direction. The first region 1114a bends inward in the second direction. The second region 1114b of the light source side first engagement piece 1114A is on one side in the first direction and enters the light source side first engagement groove 1511A from the outside of the first coupler 1005A, and the first region 1114a extending in the second and third directions engages with the light source side first engagement groove 1511A. The second bent portion 1111 is located on the outer surface side of the first coupler 1005A.

[0053] 18, the dimension L11 in the first direction of the second region 1114b of the light-source-side first engagement piece 1114A is longer than the dimension L12 in the second direction of the first region 1114a, and is at least three times, preferably at least two times longer. This makes it difficult for the light-source-side first engagement piece 1114A to come out of the light-source-side first engagement groove 1511A in the first direction. It also reduces rattling in the second direction. Therefore, it is easier to fix the light source base plate 1011 to the first connector 1005A in the second direction. As shown in the enlarged view of Fig. 15, the light source side first fixed portion 1115A has a through hole 1115aA for inserting a fixing device (screw) 1119 (see Figs. 13, 14, etc.) therethrough. The fixing device (screw) 1119 is screwed into the threaded hole 1515aA of the light source side first fixing portion 1515A of the first connector 1005A.

[0054] (1-2) Second connection means on the light source side The light source side second connecting means 1113B has a light source side second engaging piece 1114B that engages with the light source side second engaging groove 1511B of the second coupler 1005B. The light source side second connecting means 1113B here further has a light source side second fixed portion 1115B that is fixed to the light source side second fixing portion 1515B of the second coupler 1005B via a fixing device 1119. 15, the light-source-side second engagement piece 1114B is bent in the second direction from the second bent portion 1111. Here, the light-source-side second engagement piece 1114B is bent inward in the second direction and enters the light-source-side second engagement groove 1511B from the outside of the second coupler 1005B, and the light-source-side second engagement piece 1114B, which expands in the second and third directions, engages with the light-source-side second engagement groove 1511B. The second bent portion 1111 is located on the outer surface side of the second coupler 1005B. The light source side second fixed portion 1115B has a through hole 1115aB through which a fixing tool (screw) 1119 (see FIG. 14, etc.) is inserted. The fixing tool (screw) 1119 is screwed into a threaded hole 1515aB of the light source side second fixing portion 1515B of the second connector 1005B.

[0055] (2) Power supply unit As shown in Figures 13 and 14, the power supply unit 1003 comprises a power supply base plate 1031, a power supply circuit (32), a power supply cover 1032, a terminal block (34), a terminal block cover 1037, an insulating sheet (36), a wireless unit 1081, etc., and structurally differs from the first embodiment in the power supply side connecting means 1315 between the power supply base plate 1031 and the connecting device 1005. The power supply side connecting means 1315 of the power supply base plate 1031 will be described below with reference to FIG.

[0056] The power supply base plate 1031 is made of a metal (e.g., steel, aluminum, etc.) plate member. The power supply base plate 1031 has a power supply base main body 1310, a pair of second bent portions 1311 bent from the end of the power supply base main body 1310 in the second direction, and a pair of third bent portions 1312 bent from the end of the power supply base main body 1310 in the third direction, and a power supply side first connecting means 1315A and a power supply side second connecting means 1315B are provided on the second bent portions 1311. Note that two (pair) of the power supply side first connecting means 1315A and the power supply side second connecting means 1315B are provided at an interval in the third direction. The power supply base main body 1310 has, at the end in the second direction, a cutout portion 1310a in the center in the third direction and cutout portions 1310b on both sides in the third direction. There are two second bent portions 1311, which are provided between the cutout portion 1310a and the cutout portions 1310b on both sides thereof.

[0057] (2-1) First connection means on the power supply side 16, the power supply side first connecting means 1315A has a power supply side first engaging piece 1316A that engages with a power supply side first engaging groove 1531A of the power supply side first connecting means 1053A of the first connector 1005A. As shown in the enlarged view, the power supply side first engaging piece 1316A utilizes the inner part of a notch 1315a that is formed in a "U" shape and continues from the end of the power supply base main body 1310 in the second direction and the second bent portion 1311. The power supply side first engagement piece 1316A has a first region 1316aA extending in a first direction and a second region 1316bA extending in a second direction from the first region 1316aA. The second region 1316bA is bent inward in the second direction. The second region 1316bA of the power supply side first engagement piece 1316A enters the power supply side first engagement groove 1531A from the outside of the first coupler 1005A in the second direction, and the second region 1316bA engages with the power supply side first engagement groove 1531A. The second bent portion 1311 is located on the outer surface side of the first coupler 1005A.

[0058] (2-2) Second connection means on the power supply side As shown in the enlarged view of Figure 16, the power supply side second connecting means 1315B has a power supply side second engaging piece 1316B that engages with the power supply side second engaging portion 1531B of the power supply side second connecting means 1053B of the second coupler 1005B. The power supply side second connecting means 1315B here further has a power supply side second fixed portion 1317B that is fixed to the power supply side second fixing portion 1545B of the second coupler 1005B via a fixing device (screw) 1118 (see Figure 14). The power supply side second engagement piece 1316B is configured by a second bent portion 1311. The power supply side second engagement piece 1316B abuts and engages with the power supply side second engagement portion 1531B from the other side in the first direction and the outer side in the second direction. The second bent portion 1311 is located on the outer surface side of the second coupler 1005B. The power supply side second fixed portion 1317B has a through hole 1317aB for a fixture 1118 provided in the second bent portion 1311. The fixture (screw) 1118 is screwed into a screw hole 1545aB of the power supply side second fixing portion 1545B of the second connector 1005B.

[0059] (3) Arm 13 and 14, the arm 1007 attaches the device body to the construction material. The arm 1007 comprises a first arm 1071 attached to the construction material and a second arm 1072 attached to the device body (connector 5), and structurally differs from the first embodiment in the arm-side connecting means 1724 of the second arm 1072 with the connector 1005. The arm side connecting means 1724 of the second arm 1072 will be described below with reference to FIG.

[0060] The second arm 1072 has a shaft portion 1723 and a bent portion 1725 on a plate portion 1721 that is perpendicular to the second direction. The second arm 1072 has an arm side engaging piece 1726 that engages with the arm side engaging hole 1551 of the connecting device 1005, and an arm side fixed portion (screw hole) 1727 for a fixing device to fix the connecting device 1005 via a fixing device (screw) 1078, on the plate portion 1721. The arm-side engagement piece 1726 has a protruding portion 1726a that protrudes to one side from one end of the plate portion 1721 in the first direction, and a pair of groove portions 1726b formed on both sides of the protruding portion 1726a in the third direction. The pair of groove portions 1726b extend in the first direction. This allows the arm-side engagement piece 1726 to elastically deform in the second direction. The arm-side engagement piece 1726 is provided between a pair of bent portions 1728 that bend inward in the second direction from the plate portion 1721.

[0061] (4) Connector As shown in FIG. 13, the connectors 1005 are provided in pairs on both sides in the second direction, and connect the light source base plate 1011 of the light source unit 1001 and the power supply base plate 1031 of the power supply unit 1003 together. 17, the connector 1005 has a plate-like portion 1501 perpendicular to the second direction, first bent portions 1503 bent in the second direction from both ends of the plate-like portion 1501 in the third direction, and a second bent portion 1505 bent in the second direction from one end of the plate-like portion 1501 in the first direction. The plate-like portion 1501 has a notched portion 1501a recessed on one side at the end on the other side in the first direction. The connector 1005 has at least a light source side connector 1051 for connecting to the light source unit 1001 (light source base plate 1011), a power supply side connector 1053 (see Figure 16) for connecting to the power supply unit 1003 (power supply base plate 1031), and an arm side connector 1724 for connecting to the arm 1007 (second arm 1072) on the plate-shaped portion 1501. There are two (a pair) of light source side connectors 1051 and power supply side connectors 1053 spaced apart in the third direction, and one arm side connector 1054 located at the center in the third direction.

[0062] (4-1) Light source side connection means The light source side connecting means includes a first light source side connecting means 1051A of the connector 1005A and a second light source side connecting means 1051B of the second connector 1005B. The light source side first connecting means 1051A and the light source side second connecting means 1051B are provided at one end of the plate-shaped portion 1501 in the first direction.

[0063] As shown in FIG. 15, the light source side first connecting means 1051A has a light source side first engaging groove portion 1511A into which the light source side first engaging piece portion 1114A of the light source base plate 1011 engages, and a light source side first fixing portion 1515A for fixing the light source side first fixed portion 1115A of the light source base plate 1011 using a fixing device 1119 (screw). The light source side first engagement groove portion 1511A extends in the third direction, and is engaged by tilting the light source base plate 1011 and inserting the second region 1114b of the light source side first engagement piece portion 1114A into the light source side first engagement groove portion 1511A (see Figure 20(a)). As shown in the enlarged view of FIG. 15, the light source side first fixed portion 1115A has a through hole 1115aA for a screw, and the light source side first fixed portion 1515A has a screw hole 1515aA.

[0064] The light source side second connecting means 1051B has a light source side second engaging groove portion 1511B that engages with the light source side second engaging piece portion 1114B of the light source base plate 1011, and a light source side second fixing portion 1515B for fixing the light source side second fixed portion 1115B of the light source base plate 1011 using a fixing device 1119 (screw). The light source side second engagement groove portion 1511B extends in the third direction, and for example, the second connector 1005B is tilted, the light source side second engagement piece portion 1114B is inserted into the light source side second engagement groove portion 1511B, and then the second connector 1005B is returned to its original tilt, thereby engaging the second connector 1005B (see Figure 20(b)). As shown in the enlarged view of FIG. 15, the light source side second fixed portion 1115B has a through hole 1115aB for a screw, and the light source side second fixed portion 1515B has a screw hole 1515aB.

[0065] (4-2) Power supply side connection means As shown in FIG. 16, the power supply side connecting means has a power supply side first connecting means 1053A of the first connector 1005A and a power supply side second connecting means 1053B of the second connector 1005B. The power supply side first connecting means 1053A and the power supply side second connecting means 1053B are provided by utilizing the cutout portion 1501a of the plate-shaped portion 1501.

[0066] As shown in the enlarged view of FIG. 16 , the power supply-side first coupling means 1053A has a power supply-side first engagement groove 1531A that engages with the power supply-side first engagement piece 1316A of the power supply base plate 1031. The power supply-side first engagement groove 1531A is provided in an extension portion 1508 that extends to the other side in the first direction from the end of the plate-shaped portion 1501 on the other side in the first direction, facing the notched portion 1501a. The dimension of the extension portion 1508 in the third direction is smaller than the dimension of the notched portion 1315a of the power supply base plate 1031 in the third direction. This allows the extension portion 1508 to be inserted from the first direction into the notched portion 1315a in which the power supply-side first engagement piece 1316A is provided. As the extension portion 1508 advances further within the notched portion 1315a, the other end of the plate-shaped portion 1501 of the first connector 1005A in the first direction comes into contact with the power supply base main body 1310. In this state, the second region 1316bA of the power supply-side first engagement piece 1316A and the power supply-side first engagement groove 1531A are in the same position in the first direction, and as the power supply base plate 1031 slides in the second direction, the power supply-side first engagement piece 1316A is inserted into and engages with the power supply-side first engagement groove 1531A.

[0067] As shown in Figure 16, the power supply side second connecting means 1053B has a power supply side second engaging portion 1531B with which the power supply side second engaging piece portion 1316B of the power supply base plate 1031 engages, and a power supply side second fixing portion 1545B for fixing the power supply side second fixed portion 1317B of the power supply base plate 1031 using a fixing device 1119 (screw). The power supply side second engagement portion 1531B is configured by a portion facing the notched portion 1501a at the end portion on the other side in the first direction of the plate-shaped portion 1501. When the power supply base main body 1310 abuts against the end surface of the plate-shaped portion 1501 of the second coupler 1005B from the other side in the first direction, the power supply side second engagement piece 1316B engages with (abuts against) the power supply side second engagement portion 1531B, which is the outer surface of the second coupler 1005B. As shown in the enlarged view of Figure 16, the power supply side second fixed portion 1317B has a through hole 11317aB for a screw, and the power supply side second fixed portion 1545B is formed by a screw hole 1545aB into which a screw (1119) inserted through the through hole 1317aB is screwed.

[0068] In addition, the power supply base plate 1031 and the connecting device 1005 may have the power supply side second fixed portion 1317B and the power supply side second fixing portion 1545B as separate structures from the power supply side connecting means 1315B and 1053B, for example, as the power supply side fixed means (1317B) and the power supply side fixing means (1545B).

[0069] (4-3) Arm side connection means The following description will be mainly made with reference to FIG. The arm-side connecting means 1054 faces the cutout portion 1501a and is located on the intermediate side in the third direction. The arm-side connecting means 1054 is composed of an arm-side engaging hole 1551 with which the arm-side engaging piece 1726 of the arm 1007 (second arm 1072) engages, and an arm-side fixed portion 1553 fixed to the arm-side fixing portion 1727 of the arm 1007 (second arm 1072) using a fixing device 1078 (screw). The arm-side engagement piece 1726 extends from the other side to one side in the first direction. Engagement is achieved by moving the connector 1005 (plate portion 1501) toward the other side in the first direction relative to the second arm 1072 (plate portion 1721). The arm side fixing portion 1727 and the arm side fixed portion 1553 are provided on both sides in the third direction of the arm side engaging piece portion 1726 and the arm side engaging hole portion 1551. The arm-side fixed portion 1553 has a through-hole 1553a through which a fixing tool (screw) 1078 is inserted, and the arm-side fixing portion 1727 has a screw hole 1727a.

[0070] (5) Other The functional unit 1082 and the fixture 1083 will be described with reference to FIG. The functional unit 1082 has a function related to lighting. Here, it is equipped with a human presence sensor 1821, an indicator 1822 that displays the status of the function, and a light receiving element (infrared element) 1823 that receives an ON / OFF signal for the lighting. The human presence sensor 1821, the indicator 1822, and the light receiving element 1823 are mounted on a functional board (not shown) and housed in a functional case 1824. The functional case 1824 has a case body 1825 and a lid 1826, both of which can be opened and closed by, for example, an engagement structure. The functional unit 1082 is provided close to the light source unit 1001, in this case adjacent to it in the second direction. This makes it possible to increase the sensitivity of the human sensor 1821 and the like without blocking the light from the light source unit 1001.

[0071] The mounting fixture 1083 has an attachment portion 1831 for detachably attaching it to the connecting fixture 1005, a connecting side fixing portion 1832 for fixing the mounting fixture 1083 to the connecting fixture 1005 with a screw 1084, a support portion 1833 for supporting the functional unit 1082 (functional case 1824) from one side in the first direction, and a unit side fixing portion 1834 for fixing the functional unit 1082 to the mounting fixture 1083 with a screw 1085. The mounting fixture 1083 is made of a metal plate and has a plate-like portion 1835 that is long in the first direction, a pair of first bent portions 1836 that bend from both ends of the plate-like portion 1835 in the third direction (short direction) toward the connecting fixture 1005, and a second bent portion 1837 that bends from one end of the plate-like portion 1835 in the first direction to the side opposite the connecting fixture 1005.

[0072] Plate-shaped portion 1835 has opening 1835a and extending portion 1835b extending in an "L" shape from the edge of the opening, with through-hole 1835c provided in extending portion 1835b for inserting screw 1084. After extending in the second direction, extending portion 1835b extends in the first direction, i.e., along plate-shaped portion 1501 of connector 1005, with through-hole 1835c formed in the portion extending in the first direction. Screw 1084 is inserted through through-hole 1835c and threadedly engages with screw hole 1051c of connector 1005 (see FIG. 14). In this manner, extending portion 1835b and through-hole 1835c constitute connecting-side fixing portion 1832.

[0073] The plate-like portion 1835 has an extending portion 1835d that extends from the edge of the opening 1835a to the side opposite the connector 1005, i.e., toward the functional unit 1082, and the extending portion 1835d is provided with a through hole 1835e through which a screw 1085 is inserted. The screw 1085 is inserted through the through hole 1835e and threaded into a screw hole 1824b formed in the recess 1824a of the functional case 1824. In this way, the extending portion 1835d and the through hole 1835e constitute the unit-side fixing portion 1834.

[0074] The first bending portion 1836 has a first region 1836a bending from the plate-shaped portion 1835, a second region 1836b extending further from the first region 1836a, and a third region 1836c extending from the second region 1836b in the second direction and then extending to one side of the first direction. The end of the second region 1836b in the second direction is aligned with the first direction and abuts against the outer surface of the plate-shaped portion 1501 of the connector 1005. The third region 1836c engages with a pair of engagement grooves 1501b (see FIG. 14) formed in the plate-shaped portion 1501 of the connector 1005. In this manner, at least the third region 1836c constitutes the mounting portion 1831.

[0075] The second bent portion 1837 extends along one surface of the function case 1824 in the first direction. That is, the second bent portion 1837 abuts against the function case 1824 from one side in the first direction. In this manner, the second bent portion 1837 constitutes the support portion 1833. Note that the notched portion 1837a of the second bent portion 1837 fits into the protruding portion 1824c of the function case 1824 and has a positioning function.

[0076] When the functional case 1824 is fixed to the fixture 1083, the functional case 1824 has an opening 1824d at a position facing the opening 1835a of the fixture 1083. A wiring 1086 (see FIG. 13(b)) for connecting to the power supply unit 1003 is led out from the opening 1824d, and the wiring 1086 passes through the opening 1835a of the fixture 1083, between the fixture 1083 and the connector 1005, and is connected to the power supply unit 1003. This prevents the wiring 1086 from being exposed to the front side, which prevents it from getting caught on the wiring 1086c during work and improves the design. The wiring 1086 is connected to the power supply unit 1003 using a USB terminal or the like.

[0077] 3. Installation method (1) Light source unit (light source base plate) The attachment of the light source unit 1001 to the connector 1005 will be described with reference to FIGS. First, the light source side first engagement piece 1114A of the light source base plate 1011 is engaged with the light source side first engagement groove 1511A of the first connector 1005A from one side in the first direction and from the outside in the second direction. At this time, this can be easily done by, for example, tilting the light source base plate 1011 with respect to the first connector 1005A as shown in Fig. 20(a). Next, with the light source side first engagement piece 1114A engaged with the light source side first engagement groove 1511A, the light source base plate 1011 is rotated around the third direction as the rotation axis so that the light source side second engagement piece 1114B approaches the light source side second engagement groove 1511B of the second coupler 1005B. This causes the light source side second engagement piece 1114B to engage with the light source side second engagement groove 1511B. 20(b) shows the state immediately before the light-source-side second engagement piece 1114B engages with the light-source-side second engagement groove 1511B. When engaging the light-source-side second engagement piece 1114B, the engagement can be easily achieved by elastically deforming one end of the plate-like portion 1501 of the second coupler 1005B inward in the second direction. Then, the fixing device 1119 is inserted from the outside in the second direction through the through holes 1115aA, 1115aB of the light source side fixing portions 1115A, 1115B of the light source base plate 1011 and screwed into the screw holes 1515aA, 1515aB (see Figure 15) of the light source side fixing portions 1515A, 1515B of the connecting devices 1005A, 1005B. In this way, the light source unit 1001 can be connected to the connector 1005 by rotating it around the third direction as a rotation axis, and this can be done with the power supply unit 1003 attached to the connector 1005.

[0078] (2) Power supply unit (power supply base plate) The attachment of the power supply unit 1003 to the connector 1005 will be described with reference to FIGS. First, power supply base plate 1031 is brought close to first coupler 1005A from the other side in the first direction so that extension portion 1508, in which power supply side first engagement groove 1531A of first coupler 1005A is formed, fits into notched portion 1315a around power supply side first engagement piece 1316A of power supply base plate 1031. At this time, the extension tip of extension portion 1508, both ends in the third direction, are chamfered or rounded, so that the fitting can be easily performed. When the power supply base plate 1031 is brought even closer to the first connector 1005A, the power supply base plate 1031 abuts against the other end of the first connector 1005A in the first direction, which faces the cutout 1501a. This abutting state is shown in Figure 21(a). In this state, the second bent portion 1311 on the power supply-side second engagement piece 1316B side of the power supply base plate 1031 is positioned on the inner surface of the second connector 1005B. Next, with the power supply base plate 1031 in contact with the other end in the first direction of the first coupler 1005A, the power supply base plate 1031 is moved in the second direction so that the power supply side second engagement piece 1316B engages with the power supply side second engagement piece 1531B of the second coupler 1005B from the outside in the second direction. This causes the power supply side first engagement piece 1316A to enter and engage with the power supply side first engagement groove 1531A. At this time, the second bent portion 1311 and the power supply base main body 1310 are elastically deformable in the thickness direction, and can be engaged by lifting the second bent portion 1311 to the other side in the first direction and moving it in the second direction. FIG. 21(b) shows the power supply side second engagement piece 1316B in the middle of engaging with the power supply side second engagement piece 1531B. Then, when the power supply base main body 1310 abuts against the other end side of the second coupling device 1005B in the first direction (engagement completed), the fixing device 1118 (see Figure 14) is inserted from the outside in the second direction through the through hole 1317aB (see Figure 16) of the power supply side second fixed portion 1317B of the power supply base plate 1031 and screwed into the screw hole 1545aB (see Figure 16) of the power supply side second fixing portion 1545B of the second coupling device 1005B. In this way, the power supply unit 1003 can be connected to the connector 1005 by tilting it in the first direction and moving it in the second direction, so this can be done with the light source unit 1001 attached to the connector 1005.

[0079] Third Embodiment 1. Overall As shown in FIG. 22, the lighting unit (lighting device) Z is a unit formed by connecting a plurality of lighting devices. Here, the four lighting devices Y described in the second embodiment are connected via connectors 2081 and 2082, and a pair of connectors 2081 facing each other in a predetermined direction (here, the second direction) are connected by an arm 2007. For convenience, the connectors 2081 and 2082 are referred to as device connectors 2081 and 2082. One of the four lighting devices Y is provided with a wireless unit 1081, and lighting thereof can be centrally controlled by a controller (not shown). Note that the description of the lighting device Y will be omitted, and when the reference numerals of the configurations of the lighting devices X and Y described in the first or second embodiment are used, the configurations will be the same as those in the first or second embodiment. The connectors and the like will be described below.

[0080] 2.Each part (1) Device connector The device connector 2081 connects the connectors 1005, 1005 of two lighting devices Y that are adjacent in the second direction, and connects the connectors 1005, 1005 of two lighting devices Y that are adjacent in the third direction. In this way, one device connector 2081 can be used for connection in both directions. When adjacent in the second direction, for example, two connectors 1005A, 1005A are arranged with their main surfaces facing each other. When adjacent in the third direction, for example, two second connectors 1005B, 1005B are arranged with their main surfaces not facing each other (referred to as "side by side"). The device connector 2081 has a fixing portion that is fixed to the two first connectors 1005A or the second connector 1005B, and a fitting portion that fits into the end portion in the second direction. 23, the device connector 2081 has a plate-shaped portion 2811 and a bent portion 2812 that is bent in a U-shape from the other end of the plate-shaped portion 2811 in the first direction in a direction (thickness direction) perpendicular to the plate-shaped portion 2811. Here, the device connector 2081 has a second bent portion 2813 that extends from the tip of the bent portion 2812 to one side in the first direction. In the description of the device connector 2081, the direction perpendicular to the first direction and the thickness direction is defined as the width direction. The width direction coincides with the second direction when two lighting devices Y are connected in the second direction, and coincides with the third direction when two lighting devices Y are connected in the third direction.

[0081] The plate-like portion 2811 has through-holes 2811a in two rows in the width direction and in the first direction. There are multiple (for example, two) through holes 2811a spaced apart, and the two through holes 2811a face the screw holes 1503a of the first bending portions 1503 of the opposing first coupling devices 1005A, 1005A, as shown in Figure 24, and correspond to the screw holes 1501c of the plate-shaped portions 1501 of the adjacent second coupling devices 1005B, 1005B, as shown in Figure 23. The two rows of through holes 2811a in the width direction correspond to the screw holes 1503c of the first bending portions 1503 of the two opposing first connectors 1005A, as shown in Figure 24, and correspond to the screw holes 1501c of the plate-shaped portions 1501 of the two adjacent second connectors 1005B, as shown in Figure 23. As a result, when connecting two lighting devices Y arranged side by side in the third direction, as shown in Fig. 23, the fixing device (screw) 2091 (see Fig. 22) is inserted through the through hole 2811a of the device connector 2081 and screwed into the screw holes 1501c of the two second connectors 1005B. When connecting two lighting devices Y facing each other in the second direction, as shown in Fig. 24, the fixing device (screw) 2091 (see Fig. 22) is inserted through the through hole 2811a of the device connector 2081 and screwed into the screw holes 1503c of the two first connectors 1005A. In this way, the fixing portion is composed of the plate-like portion 2811 and the through-hole 2811a.

[0082] The bending portion 2812 has at least a lower extending portion 2814 extending from the other end of the plate-shaped portion 2811 in the first direction to the side opposite the connectors 1005A and 1005B, a middle extending portion 2815 extending from the tip of the lower extending portion 2814 to the other side in the first direction, and an upper extending portion 2716 extending from the other end of the middle extending portion 2815 in the first direction toward the connectors 1005A and 1005B. 23(b), (c) and 24, the upward extending portion 2816 is provided to abut against the other end in the first direction of the notched portion 1501a of the connectors 1005A and 1005B when the plate-shaped portion 2811 is fixed to the connectors 1005A and 1005B with the screws 2091. This allows the lighting devices Y adjacent to each other in the second or third direction to be stably fixed. 23(b) and 24, the upward extending portion 2816 has a fitting hole 2816a into which an outer portion 1501d in the second direction of the notched portion 1501a of the plate-shaped portion 1501 and the other side portion in the first direction of the first bent portion 1503 fit. Here, the outer portion 1501d and the other side portion of the first bent portion 1503 are connected in an "L" shape, and the fitting hole 2816a is an "L"-shaped through groove. 23, the upward extending portion 2816 has an engagement (fitting) hole 2816b that engages (fits) with the protruding portion 1726a of the second arm 1072. Note that, as shown in FIGS. 23(b) and 23(c), the first bent portion 1503 of the adjacent second connector 1005B fits into a pair of groove portions 1726b on both sides of the protruding portion 1726a of the second arm 1072. In this way, the fitting portion is formed by the fitting hole 2816a of the upward extending portion 2816. The second arm 72 of the arm 2007 is connected to the lighting device Y by fixing (screwing) a fixing device (screw) 2092 inserted through a through hole 1501e formed in the outer portion 1501d of the plate-shaped portion 1501 of the second connector 1005B to (screwed into) the arm side fixing portion (screw hole) 1727 of the second arm 72, as shown in Figures 22 and 23(a) and (c). When the second arm 72 of the arm 2007 and the lighting device Y are connected, the upward extending portion 2816 of the device connector 2081 and the bent portion 1728 of the second arm 1072 come into contact with or are close to each other.

[0083] 24, the second bent portions 2813 engage with groove portions 1501f at the other ends in the first direction of the plate-like portions 1501 of the two opposing first couplers 1005A. This reduces the load acting on the first bent portions 1503 of the first couplers 1005A and the outer portions 1501d of the plate-like portions 1501.

[0084] (2) Device connector The device connector 2082 will be described mainly with reference to FIG. The device connector 2082 connects four lighting devices Y adjacent to each other in the second and third directions. Here, the first connectors 1005A of the four lighting devices Y are connected. Note that the device connector 2082 is fitted with the first connector 1005A, and therefore may also be used as a device fitting device. The device connector 2082 includes at least a flat plate portion 2821 that is perpendicular to the first direction, and an upright flat plate portion 2822 that stands upright from the flat plate portion 2821. When viewed from the first direction, the flat plate portion 2821 has a square, rectangular, or similar shape, and here it is square. The upright flat plate portions 2822 extend from a pair of opposing sides of the flat plate portion 2821 to the other side in the first direction. Connectors 2083 are provided in (the through holes of) the pair of upright flat plate portions 2822 to connect wiring for supplying power to the lighting devices Y connected by the device connector 2082. Here, the two lighting devices Y are connected in the direction in which the side of the flat plate portion 2821 on which the upright flat plate portion 2822 is provided extends. The upright flat plate portions 2822 are configured not to protrude from the power supply cover 1032 in the first direction. The device connector 2082 has bent portions 2823 that bend to the other side in the first direction from a pair of sides of the flat plate portion 2821 on which the upright flat plate portion 2822 is not provided. This allows the flat plate portion 2821 to be reinforced.

[0085] The flat plate portion 2821 has fitting holes 2821a that fit into the outer portion 1501d and the first bent portion 1503 of the plate portion 1501 of the first connector 1005A of each lighting device Y from the other side in the first direction. Here, the outer portion 1501d and the first bent portion 1503 are continuous in an "L" shape, and one fitting hole 2821a is an "L"-shaped through groove. With outer portion 1501d and first bent portion 1503 fitted in fitting hole 2821a, flat plate portion 2821 abuts against the bottom portion of notched portion 1501a of plate portion 1501 of each first coupler 1005A (the other end portion of plate portion 1501 in the first direction), thereby stabilizing the posture of device coupler 2082. When the device connector 2082 is fitted between the outer portion 1501d and the first bent portion 1503, as shown in FIG. 25 , it is fixed by a fastener using the through-holes 1501e in the outer portions 1501d of two first connectors 1005A adjacent to each other in the second direction. The fastener here is composed of a spacer 2085 such as a cylinder disposed between the first connectors 1005A, a male screw 2086 inserted through the spacer 2085, and a female screw 2087 that engages with the male screw 2086 on the outside of the spacer 2085. This prevents the device connector 2082 from slipping off to the other side in the first direction. Furthermore, the lighting devices Y can be firmly connected to each other in the second direction, preventing loads such as torsion from acting on the flat plate portion 2821.

[0086] Although the embodiments have been described above, the present invention is not limited to these embodiments, and the following modified examples are also possible. Furthermore, the embodiments may be combined with each other, or with modified examples, or with modified examples. Furthermore, examples not described in the embodiments and modifications, and design changes within the scope of the present invention are also included in the present invention.

[0087] <Modification> 1. Lighting equipment (1) The lighting unit Z of the third embodiment includes a plurality of lighting devices Y of the second embodiment, but may include the lighting device X of the first embodiment. In this case, by aligning the direction adjacent to the third direction with the direction in which the light source base plate 11 and the power supply base plate 31 of the lighting device X engage with the connector 5, the light source unit 1 and the power supply unit 3 can be connected to the connector 5 even if the lighting device X is arranged in the third direction. Furthermore, by making the distance between adjacent lighting devices X in the third direction larger than the dimensions in the third direction of the first receiving portion (light source side receiving portion 513, 523) and the second receiving portion (power source side receiving portion 533), the light source unit 1 and the power source unit 3 can be connected to the connector 5 even if the lighting devices X are arranged in the third direction. (2) The lighting devices X and Y are provided with the power supply units 3 and 1003 when solving problems related to the power supply units, but may not be provided with the power supply units 3 and 1003 when solving problems unrelated to the power supply units. (3) Although the lighting devices X and Y are provided with the arms 7 and 1007, they do not have to be provided. However, if the lighting devices are installed in a high ceiling such as a gymnasium, it is preferable to provide them. (4) The lighting devices X and Y are rectangular when viewed from the first direction, and the longitudinal direction coincides with the second direction. However, the lateral direction may also coincide with the second direction (the connecting portions of the arms are the ends of the lateral direction). (5) The first, second, and third directions in the embodiments apply to the device body. In the embodiments, the device body is located directly below the arm 7, 1007, so the first direction coincides with the up-down direction. However, for example, if the device body is attached to the arm 7, 1007 while rotating around the second direction, the first direction will be a direction that intersects with the up-down direction. That is, the first direction is the direction in which light is emitted from the light source unit 1, 1001.

[0088] 2. Light source unit (1) The bent portion (second bent portion) 111, 1111 of the light source base plate 11, 1011 is bent toward the other side of the first direction, but it may be bent toward one side, or it may not be necessary to provide a bent portion as long as a connecting means 113, 1113 can be provided. (2) The bent portions 111, 1111 abut against the outer surface of the connector 5, 1005, but may abut against the inner surface. (3) The screws 119, 1119 for fixing the light source base plate 11, 1011 to the connector 5, 1005 are fixed at two locations on both sides in the third direction, but may be fixed at one location in the center in the third direction, or at three locations, on both sides and in the center, for example. (4) The engaging portion (light source side engaging piece 114) of the light source base plate 11 extends toward the other side in the first direction, but may extend toward one side in the first direction. (5) The engagement portion of the light source base plate 1011 (light source side second engagement piece 1114B) is bent inward in the second direction, but if it is rotatable around the third direction as a rotation axis, it may be bent outward in the second direction, or may extend in the first direction (the other side or one side) like the light source side first engagement piece 1114A. (6) The engaging portion (light source side first engaging piece portion 1114A) of the light source base plate 1011 extends toward the other side in the first direction, but may extend toward one side in the first direction.

[0089] 3. Power supply unit (1) The bent portions (second bent portions) 311, 1311 of the power supply base plate 31, 1031 are bent toward one side in the first direction, but may be bent toward the other side. Note that the bent portions 1311 of the power supply base plate 1031 may be formed as connecting means 1315A, 1315B. (2) The bent portion 311, 1311 is located on the outer surface side of the connector 5, 1005, but may be located on the inner surface side. (3) The connection points between the power supply base plate 31, 1031 and the connector 5, 1005 are fixed at two points on both sides in the third direction, but for example, they may be fixed at one point in the center in the third direction, or at three points, on both sides and in the center. (4) The engaging portion (power supply side engaging piece 316) of the power supply base plate 31 extends toward one side in the first direction, but may extend toward the other side in the first direction.

[0090] 4. Connector (1) On the light source unit 1 side of the connector 5, one receiving portion (light source side receiving portion) 523 utilizes a notched portion, but may utilize an opening with a bent portion (third bent portion) 505 remaining, as in the other receiving portion 513. Conversely, one receiving portion (light source side receiving portion) 513 utilizes an opening, but may utilize a notched portion with the bent portion removed, as in the other receiving portion 523. (2) On the power supply unit 3 side of the connector 5, one receiving portion (power supply side receiving portion) 543 utilizes a notch, but may utilize an opening with a bent portion (third bent portion) 507 remaining, as in the other receiving portion 533. Conversely, one receiving portion (power supply side receiving portion) 533 utilizes an opening, but may utilize a notch, as in the other receiving portion 543. (3) On the power supply unit 3 side of the connector 5, the fixing portion (power supply fixing portion) 545 is provided near the connecting means (power supply side connecting means) 54 located on the opposite side of the engagement direction, but may be provided near the connecting means located on the engagement direction side. However, in the first embodiment, when a plurality of lighting devices X are provided adjacent to each other in the engagement direction, by arranging the other lighting devices X on the engagement direction side, a fixing tool such as a screwdriver can be used from the opposite side of the other lighting devices X in the third direction. (4) The connector 5 has the bent portions 503, 505, and 507, but these may not be necessary if the reinforcement effect and the efficiency of the work when connecting the light source unit 1 and the power supply unit 3 are not taken into consideration. (5) The connector 1005 has a notched portion 1501a on the other side in the first direction and an outer portion 1501d on the outside in the third direction, but if it is not intended to connect multiple lighting devices Y as in the lighting unit Z of the third embodiment, it does not need to have the notched portion 1501a. Furthermore, the cutout portion 1501a has the function of restricting displacement of the power supply base plate 1031 in the third direction, but if this function is required, the cutout portion 1501a does not have to be provided.

[0091] 5. Arm (1) When it is not considered to use an arm to install the lighting devices X, Y and lighting unit Z on construction materials, the lighting devices X, Y and lighting unit Z do not need to be provided with the arms 7, 1007, 2007. (2) The second direction may be parallel to one pair of opposing sides of the rectangular light source base or power supply base, or may be parallel to the other pair of opposing sides. When the light source base plate and the power supply base plate are rectangular, the second direction may be the longitudinal direction or the lateral direction of the base. (3) The arm includes a first arm and a second arm. However, for example, the second arm may be integral with the connector (made of a single metal plate).

[0092] 6.Other (1) In the embodiment, the engaging piece portion is provided on the light source base plate 11, 1011 or the power supply base plate 31, 1031, and the engaging groove portion is provided on the connector 5, 1005, but the engaging groove portion may be provided on the light source base plate or the power supply base plate, and the engaging piece portion may be provided on the connector, or the engaging piece portion may be provided on one of a pair of connectors, and the engaging groove portion may be provided on the other. (2) In the first embodiment, the power supply side fixed portion 317 (an example of the first abutment portion) of the power supply base plate 31 and the extension portion 547 (an example of the second abutment portion) of the connector 5 are erected on the other side of the first direction, but they may also be erected on one side of the first direction.

[0093] <Invention> In the lighting device of prior art document JP 2022-22151 A, the light source unit is dropped from top to bottom onto a support framework, and the corners of the light source unit are fixed in a state where they are supported from below by the main mounting part, and the power supply unit is fixed to the support framework above the light source unit. This also creates the problem of making it difficult to attach and detach the light source unit and power supply unit. An object of the present invention is to provide a lighting device in which the unit can be easily attached and detached.

[0094] <Invention 2> The lighting device of invention 2 is a light source unit in which a light source module is attached to one side of a light source base plate in a first direction; a pair of connectors that connect to both ends of the light source base plate in a second direction perpendicular to the first direction; Equipped with One of the light source unit and the connector has a first engagement piece, the other of the light source unit and the connector has a first engagement groove portion with which the first engagement piece portion engages and a first receiving portion for receiving the first engagement piece portion, the first receiving portion is capable of receiving the first engagement piece portion from the first direction, The first engagement groove extends in a third direction perpendicular to the first direction and the second direction. This allows the light source unit to be easily connected to the connector. Note that the "first" is added for convenience and does not have to be added.

[0095] <Invention 3> The lighting device of invention 3 is a power supply unit having a power supply circuit attached to the other side of the power supply base plate in the first direction; A pair of connectors that connect to both ends of the power supply base plate in a second direction perpendicular to the first direction; Equipped with one of the power supply unit and the connector has a second engagement piece; the other of the power supply unit and the connector has a second engagement groove portion with which the second engagement piece portion engages and a second receiving portion for receiving the second engagement piece portion, the second receiving portion is capable of receiving the second engagement piece portion from the first direction, The second engagement groove extends in the third direction. This allows the power supply unit to be easily connected to the connector. Note that the "second" is added for convenience and does not have to be added.

[0096] <Invention 4> The lighting device of invention 4 is a light source unit in which a light source module is attached to one side of a light source base plate in a first direction; a pair of connectors that connect to both ends of the light source base plate in a second direction perpendicular to the first direction; Equipped with The connector comprises a first connector and a second connector, one of the light source unit and the first connector has a first engagement piece; the other of the light source unit and the first connector has a first engagement groove portion that receives the first engagement piece portion and engages with the first engagement piece portion; one of the light source unit and the second connector has a second engagement piece; the other of the light source unit and the second connector has a second engagement groove portion that receives the second engagement piece portion and engages with the second engagement piece portion; the first engagement piece portion is engaged with the first engagement groove portion so as to be rotatable about a rotation axis in a third direction perpendicular to the first direction and the second direction, The second engagement piece can be engaged with the second engagement groove when the first engagement piece rotates and the light source base plate is in a state perpendicular to the first direction. This allows the light source unit to be easily connected to the connector.

[0097] <Invention 5> The lighting device of invention 5 is a power supply unit having a power supply circuit attached to the other side of the power supply base plate in the first direction; A pair of connectors that connect to both ends of the power supply base plate in a second direction perpendicular to the first direction; Equipped with The connector comprises a first connector and a second connector, one of the power supply unit and the first connector has a first engagement piece; the other of the power supply unit and the first connector has a first engagement groove that receives the first engagement piece and engages with the first engagement piece; one of the power supply unit and the second connector has a second engagement piece; the other of the power supply unit and the second connector has a second engagement portion with which the second engagement piece portion engages; the first engagement piece portion is engaged with the first engagement groove portion so as to be rotatable about a rotation axis in a third direction perpendicular to the first direction and the second direction, The second engagement piece is capable of engaging with the second engagement portion when the first engagement piece rotates and the power supply base plate is in a state perpendicular to the first direction. This allows the power supply unit to be easily connected to the connector.

[0098] <Other> Inventions 1 to 5 may be combined with other inventions, or may have the configurations of other inventions or the configurations described in the embodiments and modifications. [Explanation of symbols]

[0099] X lighting device 1 Light source unit 2 Light source base plate 3 Power Supply Unit 4 Power supply base plate 5 Connecting members 6 Arm material

Claims

1. a light source unit in which a light source module is attached to one side of a light source base plate in a first direction; a power supply unit having a power supply circuit mounted on the other side of the power supply base plate in the first direction; a pair of connectors that connect both end portions of the light source base plate and the power supply base plate in a second direction perpendicular to the first direction in the first direction; an arm attached to the pair of connectors and for attachment to a construction material; Equipped with One of the light source unit and the connector has a first engagement piece, the other of the light source unit and the connector has a first engagement groove portion with which the first engagement piece portion engages and a first receiving portion for receiving the first engagement piece portion, the first receiving portion is capable of receiving the first engagement piece portion from the first direction, The first engagement groove portion extends in a third direction perpendicular to the first direction and the second direction. Lighting equipment.

2. a dimension of the first receiving portion in the third direction being greater than a dimension of the first engaging piece portion in the third direction; The lighting device according to claim 1 .

3. one of the power supply unit and the connector has a second engagement piece; the other of the power supply unit and the connector has a second engagement groove portion with which the second engagement piece portion engages and a second receiving portion for receiving the second engagement piece portion, The second engagement groove portion extends in the third direction. The lighting device according to claim 1 .

4. a dimension of the second receiving portion in the third direction being larger than a dimension of the second engaging piece portion in the third direction; 4. The lighting device according to claim 3.

5. the first receiving portion and the second receiving portion are notched portions of the connector, the first engagement groove portion is connected to the first engagement piece portion on the opposite side in the third direction to a first receiving opening in the first receiving portion that receives the first engagement piece portion; the second engagement groove portion is connected to the second engagement piece portion on the opposite side in the third direction to a second receiving opening in the second receiving portion that receives the second engagement piece portion, An opening edge of either or both of the first receiving portion and the second receiving portion is curved.

4. The lighting device according to claim 3.

6. the power supply base plate has a first abutment portion standing on one side or the other side in the first direction, The connector has a second abutment portion standing on one side or the other side in the first direction, the first abutment portion and the second abutment portion are fixed by a fixing device in an abutting or close proximity state based on the second engagement piece portion engaging with the second engagement groove portion; 4. The lighting device according to claim 3.

7. The arm includes a first arm attached to the construction material and a second arm attached to the connector, one of the first arm and the second arm has a shaft portion parallel to the second direction, the other of the first arm and the second arm has a hole into which the shaft portion fits, the first arm and the second arm are rotatably connected to each other around a central axis of the shaft portion by fitting the shaft portion into the hole portion, one of the first arm and the second arm has a notch along a central axis of the shaft portion, the other of the first arm and the second arm has a restriction portion disposed in the notch, the notched portion has a contact portion with which the restricting portion comes into contact when the first arm and the second arm rotate a predetermined angle around the central axis of the shaft portion. The lighting device according to any one of claims 1 to 6.

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