Lighting devices and lighting fixtures

Abstract

The objective of this disclosure is to improve the work efficiency of construction work. [Solution] The light source unit A1 comprises a long light source module 1, a power supply unit, a long support member, a connecting member (power connector 23), and a wall portion (protruding wall 51 of the cover 5). The connecting member electrically connects the external power supply and the power supply unit. The wall portion rises from one or both ends in the short direction of the support member toward the second surface. The connecting member has a first connecting component (power connector 23) electrically connected to the power supply unit, and a second connecting component that is electrically connected to the external power supply and electrically and mechanically detachably connected to the first connecting component. The first connecting component is exposed from the tip of the wall portion when viewed from the short direction of the support member.

Description

Technical Field

[0001] The present disclosure relates to a lighting device and a luminaire, and more particularly to a lighting device that is detachably attached to a luminaire body, and a luminaire including the lighting device and the luminaire body.

Background Art

[0002] As a conventional example, a luminaire described in Patent Document 1 is exemplified. The luminaire described in Patent Document 1 includes a luminaire body attached to the lower surface of a ceiling board, and a light source unit detachably attached to the luminaire body.

[0003] The light source unit includes an LED module, a mounting member to which the LED module is attached, and a power supply device that supplies power to the LED module. The mounting member is formed in a U shape by bending a sheet metal, and includes a bottom surface portion formed in a rectangular plate shape that is long in the front-rear direction, and a pair of side surface portions that project upward from both ends in the width direction of the bottom surface portion.

[0004] The power supply device includes a substrate and a case that houses the substrate. A connector that is detachably connected to a connector attached to the tip of a power supply line is mounted on the substrate. The power supply line is connected to a terminal block attached to the luminaire body. These two connectors are connected during the attachment operation in which the light source unit is attached to the luminaire body.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] By the way, in the case of lighting devices and lighting fixtures like the conventional examples mentioned above, there is a desire to improve the work efficiency of the installation work for the lighting devices.

[0007] The purpose of this disclosure is to provide lighting devices and lighting fixtures that can improve the work efficiency of construction work. [Means for solving the problem]

[0008] A lighting device according to one aspect of the present disclosure is detachably attached to a long fixture body. The lighting device comprises a long light source, a power supply device, a long support member, a connecting member, and a wall portion. The power supply device converts first power supplied from an external power source into second power and supplies the converted second power to light the light source. The support member has a first surface and a second surface opposite to the first surface, supporting the light source on the first surface side and the power supply device on the second surface side. The connecting member electrically connects the external power source and the power supply device. The wall portion rises from one or both ends of the support member in the short direction toward the second surface side. The connecting member has a first connecting component electrically connected to the power supply device and a second connecting component electrically connected to the external power source and electrically and mechanically detachably connected to the first connecting component. The first connecting component is exposed from the tip of the wall portion when viewed from the short direction of the support member.

[0009] A lighting fixture according to one aspect of the present disclosure comprises a lighting device and a fixture body that detachably supports the lighting device. [Effects of the Invention]

[0010] The lighting devices and lighting fixtures disclosed herein have the effect of improving the work efficiency of construction work. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a perspective view of a lighting fixture according to an embodiment of this disclosure. [Figure 2]Figure 2 is an exploded perspective view of the same lighting fixture and the light source unit according to the embodiment of this disclosure. [Figure 3] Figure 3 is a perspective view from above of the light source unit and the fixture body of the lighting fixture shown above. [Figure 4] Figure 4 is a side view of the same light source unit. [Figure 5] Figure 5 is a partially broken perspective view of the same lighting fixture. [Figure 6] Figure 6A is a longitudinal cross-sectional view of the same lighting fixture with some parts omitted. Figure 6B is a longitudinal cross-sectional view of the same lighting fixture with some parts omitted. [Figure 7] Figure 7 is a partially omitted side view of the same lighting fixture. [Figure 8] Figure 8 is a plan view of the main components of the light source unit shown above. [Figure 9] Figure 9 is a circuit block diagram of the same light source unit. [Figure 10] Figure 10 is a side view of the same light source unit. [Figure 11] Figure 11 is a partially omitted side view of the same lighting fixture in its temporary suspension state. [Figure 12] Figure 12 is a partially omitted side view of the same lighting fixture, showing the process of attaching the light source unit to the fixture body. [Figure 13] Figure 13 is a plan view of the same lighting fixture when the fixture bodies are installed in a series. [Figure 14] Figure 14 is a side view of the main components of the light source unit shown above, with the power supply unit and power connector not connected. [Figure 15] Figure 15 is a side view of the main components of the light source unit shown above, with the power supply unit and power connector connected. [Figure 16] Figure 16 is a plan view of the main components of the light source unit shown above, with the power supply unit and power connector connected. [Figure 17] Figure 17 is a plan view of the main components of the light source unit shown above, with the communication unit and signal lines connected. [Figure 18] FIG. 18 is an exploded perspective view of the lighting fixture of Modification 1. [Figure 19] FIG. 19 is a perspective view of the lighting fixture of Modification 1 in a state where the fixture main body is attached to the ceiling. [Figure 20] FIG. 20 is a side view of a main part of the light source unit of Modification 2. [Figure 21] FIG. 21A is a partially omitted side view showing another side plate of the light source unit of Modification 2. FIG. 21B is a partially omitted side view showing yet another side plate of the light source unit of Modification 2. [Figure 22] FIG. 22 is a side view of the light source unit of Modification 3. [Figure 23] FIG. 23 is a side view of a main part of the light source unit of Modification 4. [Figure 24] FIG. 24 is a side view of a main part of the light source unit of Modification 5. [Figure 25] FIG. 25 is a cross-sectional view of a main part of a support member in the light source unit of Modification 6. [Figure 26] FIG. 26 is a cross-sectional view of a main part of a support member having another configuration in the light source unit of Modification 6. [Figure 27] FIG. 27 is a cross-sectional view of a main part of a support member having yet another configuration in the light source unit of Modification 6. [Figure 28] FIG. 28 is a cross-sectional view of a main part of a support member having yet another configuration in the light source unit of Modification 6. [Figure 29] FIG. 29 is a cross-sectional view of a main part of a support member having another configuration in the light source unit of Modification 6. [Figure 30] FIG. 30 is a cross-sectional view of a main part of a support member having yet another configuration in the light source unit of Modification 6. [Figure 31] FIG. 31 is a cross-sectional view of a main part of a support member having yet another configuration in the light source unit of Modification 6. [Figure 32] FIG. 32 is a cross-sectional view of a main part of a support member having another configuration in the light source unit of Modification 6. [Figure 33]Figure 33 is a cross-sectional view of the main part of a support member in yet another configuration of the light source unit of Modification 6. [Figure 34] Figure 34 is a cross-sectional view of the main part of yet another configuration of the support member in the light source unit of Modification 6. [Figure 35] Figure 35 is a cross-sectional view of the main part of a support member of a different configuration in the light source unit of Modification 6. [Figure 36] Figure 36 is a cross-sectional view of the main part of a support member in yet another configuration of the light source unit in Modification 6. [Figure 37] Figure 37 is a cross-sectional view of the main part of yet another configuration of the support member in the light source unit of Modification 6. [Figure 38] Figure 38 is a cross-sectional view of a support member in a different configuration of the light source unit in Modification 6. [Figure 39] Figure 39 is a cross-sectional view of a support member in yet another configuration of the light source unit in Modification 6. [Figure 40] Figure 40A is a side view of a support member in a different configuration in the light source unit of Modification 6. Figure 40B is a side view of a support member in yet another configuration in the light source unit of Modification 6. Figure 40C is a side view of a support member in yet yet another configuration in the light source unit of Modification 6. [Figure 41] Figure 41 is a cross-sectional view of the main parts of the support member and cover in the light source unit of Modified Example 7. [Figure 42] Figure 42 is a cross-sectional view of the support member and the main part of the cover with a different configuration in the light source unit of Modified Example 7. [Figure 43] Figure 43 is a cross-sectional view of the support member and the main part of the cover of another configuration in the light source unit of Modified Example 7. [Figure 44] Figure 44 is a cross-sectional view of the support member and the main part of the cover of yet another configuration in the light source unit of Modification 7. [Figure 45] Figure 45 is a cross-sectional view of the main parts of the support member and cover in the light source unit of the modified example 8. [Figure 46]Figure 46 is a cross-sectional view of the main parts of the support member and cover in the light source unit of the modified example 9. [Figure 47] Figure 47 is a cross-sectional view of the main parts of the support member and cover in the light source unit of the modified example 10. [Figure 48] Figure 48 is a cross-sectional view of a key part of another configuration of the support member and cover in the light source unit of Modified Example 10. [Figure 49] Figure 49 is a cross-sectional view of a key part of yet another configuration of the support member and cover in the light source unit of Modified Example 10. [Figure 50] Figure 50 is a cross-sectional view of yet another key part of the support member and cover configuration in the light source unit of Modified Example 10. [Figure 51] Figure 51 is a cross-sectional view of a key part of another configuration of the support member and cover in the light source unit of Modified Example 10. [Figure 52] Figure 52A is a cross-sectional view of the main parts of the support member and cover in the light source unit of Modified Example 11. Figure 52B is a cross-sectional view of the main parts of another configuration of the support member and cover in the light source unit of Modified Example 11. [Figure 53] Figure 53 is a cross-sectional view of the main parts of the support member and cover in the light source unit of the modified example 12. [Figure 54] Figure 54 is a cross-sectional view of the main parts of the support member and cover in the light source unit of the modified example 13. [Figure 55] Figure 55 is a cross-sectional view of the main parts of the support member and cover in the light source unit of the modified example 14. [Figure 56] Figure 56 is a cross-sectional view of a key part of another configuration of the support member and cover in the light source unit of Modification 14. [Figure 57] Figure 57 is a cross-sectional view of a key part of yet another configuration of the support member and cover in the light source unit of Modification 14. [Figure 58] Figure 58 is a cross-sectional view of the main parts of the support member and cover in the light source unit of Modified Example 15. [Figure 59] Figure 59 is a cross-sectional view of the main parts of the support member and cover in the light source unit of the modified example 16. [Figure 60] Figure 60 is a cross-sectional view of a key part of another configuration of the support member and cover in the light source unit of Modification 16. [Figure 61] Figure 61 is a cross-sectional view of a key part of another configuration of the support member and cover in the light source unit of Modification 17. [Modes for carrying out the invention]

[0012] Hereinafter, lighting devices and lighting fixtures according to embodiments of this disclosure will be described in detail with reference to the drawings. However, the figures described in the following embodiments are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. Furthermore, the configurations described in the following embodiments are merely examples of this disclosure. This disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

[0013] (1) Overview The lighting device (light source unit A1) according to this embodiment is detachably attached to a long fixture body 6. The light source unit A1 comprises a long light source (light source module 1), a power supply device 20, a long support member 3, a connecting member, and a wall portion (side plate 31 of the support member 3, protruding wall 51 of the cover 5) (see Figures 2 and 3).

[0014] The power supply unit 20 converts the first power (AC power) supplied from the external power supply P1 (see Figure 9) into second power (DC power), and supplies the converted second power to light up the light source module 1.

[0015] The support member 3 has a first surface 30A (bottom surface) and a second surface 30B (top surface) opposite to the first surface 30A, supporting the light source module 1 on the first surface 30A side and the power supply unit 20 on the second surface 30B side.

[0016] The wall portion rises from one or both ends of the support member 3 in the short direction toward the second surface 30B side (upper side).

[0017] The connecting member electrically connects the external power supply P1 and the power supply unit 20. The connecting member also includes a first connecting component (power connector 23) electrically connected to the power supply unit 20, and a second connecting component (power connector 94) electrically connected to the external power supply P1 and electrically and mechanically detachably connected to the first connecting component (power connector 23). The first connecting component (power connector 23) is located further away from the second surface 30B than the tip of the wall (see Figure 4). In other words, the first connecting component (power connector 23) protrudes above the tip of the wall (projecting wall 51).

[0018] When the light source unit A1 is attached to the fixture body 6, the second connecting component (power connector 94) is manually connected to the first connecting component (power connector 23) (see Figures 14 and 15). At this time, the first connecting component (power connector 23) is located further away from the second surface 30B than the tip of the wall portion (protruding wall 51) (it protrudes above the tip of the wall portion (protruding wall 51)), so sufficient space can be secured around the first connecting component (power connector 23). Here, "sufficient space" means enough space so that the wall portion does not interfere with the hand (fingers) that is grasping the second connecting component (power connector 94).

[0019] However, in the lighting device (light source unit A1) according to this embodiment, the first connecting component (power connector 23) is positioned further away from the second surface 30B than the tip of the wall, so the wall is less likely to get in the way when connecting the second connecting component (power connector 94) to the first connecting component (power connector 23). As a result, the lighting device (light source unit A1) according to this embodiment can improve the workability of the installation work.

[0020] Furthermore, the lighting fixture B1 according to the embodiment comprises a lighting device (light source unit A1) according to the embodiment and a fixture body 6 that supports the lighting device (light source unit A1) according to the embodiment (see Figure 2).

[0021] However, since the lighting fixture B1 according to the embodiment is equipped with a lighting device (light source unit A1) according to the embodiment, the work efficiency of the installation work for the lighting fixture B1 according to the embodiment can be improved.

[0022] (2) Details (2-1) Lighting fixtures First, the lighting fixture B1 according to the embodiment (hereinafter referred to as lighting fixture B1) will be described.

[0023] As shown in Figures 1-3, the lighting fixture B1 comprises a lighting device according to the embodiment, namely a light source unit A1 (hereinafter abbreviated as light source unit A1) and a fixture body 6 that supports the light source unit A1. The light source unit A1 is detachably attached to the fixture body 6 which is directly attached to the ceiling. However, the fixture body 6 may be embedded in the ceiling as will be described later. Alternatively, the fixture body 6 may be directly attached to the wall or embedded in the wall.

[0024] The fixture body 6 comprises a long, box-shaped housing section 60 with an open bottom, a pair of reflectors 61 projecting diagonally upward from the open edges on both sides along the longitudinal direction of the housing section 60, and a pair of end plates 62 provided at both ends in the longitudinal direction of the housing section 60 and the pair of reflectors 61 (see Figures 2 and 3). The housing section 60 and the pair of reflectors 61 are integrally formed by punching and bending metal plates. However, the fixture body 6 may consist only of the housing section 60 with both ends in the longitudinal direction closed by the pair of end plates 62, without the pair of reflectors 61.

[0025] The fixture body 6 is installed on the ceiling S1 by inserting suspension bolts 90 through at least two of the multiple mounting holes 63 provided on the bottom (top) surface of the housing 60, and tightening nuts 91 onto these suspension bolts 90 (see Figure 2). In addition, a power cable 92 (connecting member) is inserted through one of the multiple power holes 64 provided on the bottom surface of the housing 60. However, when multiple lighting fixtures B1 are installed, another power cable for daisy-chaining may be inserted through a different power hole 64. Furthermore, as will be described later, another power cable for daisy-chaining may be inserted through a hole formed by cutting out a knockout portion 620 (see Figure 2) provided on the end plate 62.

[0026] A terminal block 65 (connecting member) is attached to the bottom surface of the housing 60. The terminal block 65 is electrically connected to the power line 93 (connecting member). A power connector 94 (second connecting component) is provided at the end of the power line 93.

[0027] However, the power cable 92 inserted through the power hole 64 of the fixture body 6 is electrically connected to the terminal block 65, and is electrically connected to the power unit 2 of the light source unit A1 via the terminal block 65, power line 93, power connector 94 and power connector 23 (first connecting component).

[0028] The housing section 60 has a pair of hooking holes 600 and a pair of hooking fittings 601 located near both ends in its longitudinal direction (see Figures 2 and 5). The pair of hooking holes 600 are provided on the side wall of one end of the housing section 60 in the short direction. The pair of hooking fittings 601 are positioned on the upper part of the other end of the housing section 60 in the short direction (see Figures 2 and 5). However, in the device body 6, instead of providing the pair of hooking holes 600 on the side wall of one end of the housing section 60 in the short direction, fittings with hooking holes may be provided at one end of the housing section 60 in the short direction.

[0029] (2-2) Light source unit As shown in Figures 2 and 3, the light source unit A1 comprises a light source module 1, a support member 3, a cover 5, a power supply unit 2, a communication unit 4, and a first connecting component (power connector 23).

[0030] (2-2-1) Light source module The light source module 1 has two substrates 11 and a number of LEDs (Light Emitting Diodes) 10 mounted on the surface (bottom surface) of each substrate 11. The light-emitting elements, LEDs 10, are, for example, packaged white LEDs for illumination. However, the light-emitting elements are not limited to LEDs and may also be organic electroluminescent elements or semiconductor laser elements, etc.

[0031] Each circuit board 11 is formed in a long rectangular shape. Numerous LEDs 10 are mounted in a single row at equal intervals along the longitudinal direction of each circuit board 11, in the center of the short side of the surface (bottom surface) of each circuit board 11 (see Figure 2). The numerous LEDs 10 are electrically connected in series or series-parallel by printed wiring formed on the surface of each circuit board 11. In addition, two sets of connectors 12 are mounted on one end of the longitudinal side of the surface of each circuit board 11 (see Figure 2). The printed wiring formed on the surface of each circuit board 11 is electrically connected via the two sets of connectors 12.

[0032] (2-2-2) Support Member The support member 3 is formed from a metal plate into a long, rectangular trough shape (see Figures 2 and 7). The support member 3 has a long, rectangular base plate 30 and a pair of side plates 31 that rise upward from both ends along the longitudinal direction of the base plate 30. The light source module 1 is attached to the first surface 30A (bottom surface) of the base plate 30 by a plurality of claws 301 cut out from the base plate 30 (see Figure 7). The width of the base plate 30 in the short direction is greater than the width of the substrate 11 in the short direction (see Figure 2). However, the light source module 1 may also be attached to the base plate 30 by sliding the substrate 11 along the longitudinal direction of the base plate 30 and hooking it onto the plurality of claws 301, and then restricting the movement of the substrate 11 with retaining pieces provided on the base plate 30. Alternatively, an attachment method in which protrusions other than the claws 301 are hooked onto the ends of the substrate 11, or an attachment method in which the substrate 11 is bonded to the base plate 30 with adhesive may be used.

[0033] Furthermore, the base plate 30 has protrusions 34 at both ends in its short direction (see Figure 7). Each protrusion 34 is formed in a U-shape when viewed from the longitudinal direction of the base plate 30 and protrudes downward from the first surface 30A of the base plate 30. The pair of side plates 31 protrude upward from the outer ends of the protrusions 34.

[0034] The support member 3 is provided with a pair of first hooking members 37 that protrude outwards from one end in the short direction near both ends in the longitudinal direction (see Figures 2 and 3). Furthermore, the support member 3 is provided with a pair of second hooking members 38 at the other end in the short direction near both ends in the longitudinal direction (see Figure 3). The pair of first hooking members 37 and the pair of second hooking members 38 play a role in holding the light source unit A1 to the fixture body 6, as will be described later.

[0035] (2-2-3) First hooking member The first hooking member 37 has a main piece 370 formed in the shape of a rectangular flat plate, a raised piece 371 bent upward from one end edge in the longitudinal direction of the main piece 370, and a hooking piece 372 projecting in the opposite direction from the main piece 370 from the tip (upper end) of the raised piece 371 (see Figures 7 and 8). The tip of the hooking piece 372 is bent in a V shape. The main piece 370, the raised piece 371, and the hooking piece 372 are integrally formed by bending a single metal plate.

[0036] The first hooking member 37 is attached to the support member 3 via a mounting bracket 39. The mounting bracket 39 has a first mounting portion 391, a second mounting portion 392, and a temporary holding portion 393 (see Figures 7 and 8).

[0037] The first mounting section 391 includes a rectangular first mounting plate 3910, a veneer 3911 rising from one end edge of the first mounting plate 3910 in the short direction, and four support pieces 3912 projecting upward from the other end of the first mounting plate 3910 in the short direction (see Figures 7 and 8). One L-shaped support projection 3913 protrudes from each end in the width direction at the tip of the veneer 3911.

[0038] Each of the four support pieces 3912 is formed in an L-shape. The four support pieces 3912 are arranged in two rows with a gap between them, along the short and long directions of the first mounting plate 3910. However, the two support pieces 3912 arranged along the long direction of the first mounting plate 3910 are positioned so that their ends are close to each other.

[0039] The first hooking member 37 has its main piece 370 inserted into the space between the four support pieces 3912 and the first mounting plate 3910, and its hook piece 372 inserted into the space between the tip of the veneer 3911 and the pair of support projections 3913. In other words, the first hooking member 37 is attached to the first mounting portion 391 by the four support pieces 3912 and the pair of hook pieces 372 so that it can slide along the shorter side of the first mounting plate 3910 (the shorter side of the bottom plate 30).

[0040] The second mounting portion 392 includes a flat second mounting plate 3920 connected to one end edge of the first mounting plate 3910 in the short direction, and a retaining piece 3921 protruding upward from the second mounting plate 3920 (see Figure 8). The retaining piece 3921 is formed in an inverted U shape.

[0041] The temporary holding portion 393 is formed in a plate shape and protrudes upward from one end of the second mounting plate 3920 in the longitudinal direction (the longitudinal direction of the bottom plate 30). The temporary holding portion 393 is formed integrally with the second mounting portion 392.

[0042] A recess 3930 is formed in the upper end portion of the temporary holding portion 393. The recess 3930 is formed such that one wall is aligned in the vertical direction, and the opposite wall is inclined upward away from the wall on the other side (see Figure 7). In addition, the area adjacent to the recess 3930 in the upper end portion of the temporary holding portion 393 is cut out in an L-shape.

[0043] The mounting bracket 39 is screwed to the second surface 30B (the surface opposite to the first surface 30A (the top surface)) of the bottom plate 30 of the support member 3. However, the mounting bracket 39 may be fixed to the bottom plate 30 by methods other than screwing, such as crimping, welding, or adhesive.

[0044] (2-2-4) Second hooking member The second hooking member 38 has a coil portion 380 corresponding to a fixing portion and an arm portion 381 that protrudes from the coil portion 380 and hooks onto the fixture body 6 (hooking fitting 601) (see Figure 8). The arm portion 381 is formed by extending one of the two winding ends of the coil portion 380. In the following description, the other winding end of the coil portion 380 will be referred to as the winding end portion 382. The winding end portion 382 is formed to be considerably shorter than the arm portion 381 (see Figure 8).

[0045] The arm portion 381 is bent downwards along the height direction, approaching the support member 3. Furthermore, the tip of the arm portion 381 is bent into an L-shape (see Figure 8).

[0046] The second hooking member 38 is attached to the support member 3 via the mounting bracket 39. That is, the second hooking member 38 is attached to the second mounting portion 392 by hooking the coil portion 380 onto the retaining piece 3921 of the second mounting portion 392 (see Figure 8). When attached to the second mounting portion 392, the arm portion 381 is positioned to go over the temporary holding portion 393.

[0047] The tip of the winding end 382 is bent at approximately a right angle. The tip of the winding end 382 is then inserted through a groove 3922 provided in the second mounting plate 3920 and into a through hole provided in the bottom plate 30. This restricts the axial rotation of the coil portion 380.

[0048] (2-2-5) Power supply unit The power supply unit 2 comprises a power supply device 20 and a power supply case 21 that houses the power supply device 20 (see Figure 6A).

[0049] The power supply unit 20 includes a printed circuit board 22 on which wiring conductors are printed on a rectangular insulating substrate, and a plurality of circuit components (not shown) mounted on both the front and back surfaces of the printed circuit board 22. In other words, the power supply unit 20 is composed of printed circuits.

[0050] Figure 9 shows the circuit configuration of the power supply unit 20. The power supply unit 20 includes a power conversion circuit 200, a constant current circuit 201, a control circuit 202, and the like.

[0051] The power conversion circuit 200 includes, for example, a rectifier circuit such as a diode bridge, a boost chopper circuit (power factor correction circuit), and the like. The power conversion circuit 200 converts AC power supplied from an external power supply P1 through a power connector 23 into DC power. The external power supply P1 is, for example, a commercial power grid that supplies AC voltage and AC current with an effective value of 100V or 200V. However, the power conversion circuit 200 may include a switching power supply circuit with a power factor correction function, such as a buck chopper circuit, a buck-boost chopper circuit, or a flyback converter, instead of a boost chopper circuit.

[0052] The constant current circuit 201 includes, for example, a buck converter. The constant current circuit 201 steps down the DC voltage output from the power conversion circuit 200 and applies it to the light source module 1, and also adjusts the DC current flowing through the light source module 1. However, the constant current circuit 201 may include various chopper circuits, series regulators, etc., instead of the buck converter.

[0053] The control circuit 202 includes, for example, a microcontroller. The control circuit 202 controls the power conversion circuit 200 to maintain its output voltage at a constant DC voltage. Furthermore, the control circuit 202 controls the step-down chopper circuit of the constant current circuit 201 to match the DC current supplied from the constant current circuit 201 to the light source module 1 to a target value. As will be described later, the control circuit 202 changes the target value of the DC current supplied to the light source module 1 in accordance with the dimming signal received from the communication unit 4.

[0054] Here, the power connector 23 is mounted on one end of the printed circuit board 22 in the longitudinal direction (see Figure 6A). In this embodiment, the power connector 23 is a connector to which the power connector 94 is inserted and removed, but a terminal block to which the conductors of the electric wire are electrically connected may be used instead of the power connector 23. Alternatively, instead of the power connector 23, lead wires may be drawn from the power supply unit 20 and soldered to the conductors of the power wire 93. Note that the configuration of the power connector 23 also includes configurations other than those described above. However, in Figure 6A, the circuit components mounted on the front (bottom) and back (top) surfaces of the printed circuit board 22 are not shown.

[0055] The power supply case 21 has a rectangular bottom wall 210 and a pair of first side walls 211 that protrude downward along the short direction of the bottom wall 210 from both ends in the longitudinal direction of the bottom wall 210. The power supply case 21 also has a pair of second side walls 212 that protrude downward along the longitudinal direction of the bottom wall 210 from both ends in the short direction of the bottom wall 210 (see Figures 6A and 7). In other words, the power supply case 21 is formed in the shape of a long box with an opening at the front (downward) of the bottom wall 210. The socket for the power connector 23 protrudes out of the power supply case 21 through a window hole provided in one of the first side walls 211 (see Figures 6A and 7).

[0056] The power supply unit 2 is attached to the bottom plate 30 of the support member 3 so that the opening of the power supply case 21 faces the second surface 30B of the bottom plate 30 (see Figures 6A and 7). The power supply case 21 is attached to the bottom plate 30 by appropriate methods such as screwing, crimping, or adhesive.

[0057] (2-2-6) Communication Unit The communication unit 4 includes a communication circuit section 40, a signal terminal block 41, and a communication connector 47 (see Figure 9). The communication circuit section 40 receives control signals transmitted via a signal line 96 (see Figures 2 and 17) electrically connected to the signal terminal block 41. The control signals are signals that transmit control information such as on / off instructions and dimming levels. The communication circuit section 40 is communicably connected to the control circuit 202 of the power supply unit 20 via the communication connector 47. The communication circuit section 40 transmits the control information contained in the received control signals to the control circuit 202 via the communication connector 47. The control circuit 202 performs actions such as turning on / off and changing the dimming level of the light source module 1 according to the control information received from the communication circuit section 40. However, the communication circuit section 40 may be configured to perform wireless communication using infrared or radio waves as the communication medium instead of wired communication via the signal line 96.

[0058] Furthermore, the communication unit 4 also has a case 43 that houses the communication circuit section 40, the signal terminal block 41, and the communication connector 47 (see Figures 6A and 17). The case 43 is formed in a box shape from an electrically insulating synthetic resin. The case 43 also exposes the input ports of the signal terminal block 41 (the ports into which the signal wires 96 are inserted) through a window 430 provided on its upper surface (see Figure 17).

[0059] The case 43 is attached to the first side wall 211 of the power supply case 21 (the first side wall 211 opposite to the power connector 23) (see Figure 6A). However, the communication unit 4 may be attached to a part other than the power supply case 21, for example, the support member 3.

[0060] (2-2-7) Cover The cover 5 comprises a long, semi-cylindrical cover body 50, a pair of cover ends 54 attached to each of the longitudinal ends of the cover body 50, a pair of protruding walls 51, and a pair of extensions 53 (see Figures 2, 3, and 7). However, the shape of the cover body 50 is not limited to a long, semi-cylindrical shape, but can be any shape such as a rectangular tube.

[0061] The pair of extensions 53 project inward from both ends of the cover body 50 in the short direction along the longitudinal direction of the cover body 50. The pair of protruding walls 51 project upward along the longitudinal direction of the cover body 50 from the connecting pieces 531 (described later) of the pair of extensions 53 (see Figure 7). A hook-shaped hook portion 52 is integrally provided at the upper end of each protruding wall 51 along the longitudinal direction of each protruding wall 51. The cover body 50, the pair of protruding walls 51, and the pair of hook portions 52 are integrally formed from a translucent synthetic resin such as acrylic resin or polycarbonate resin. However, the cover body 50, the pair of protruding walls 51, and the pair of extensions 53 may be formed from a translucent material other than synthetic resin, such as inorganic glass such as quartz glass.

[0062] The pair of cover ends 54 are formed in a semi-circular shape in plan view from the same translucent material as the cover body 50. The pair of cover ends 54 are attached one to each end of the cover body 50 in the longitudinal direction. In other words, both ends of the cover body 50 in the longitudinal direction are closed by the cover ends 54.

[0063] The cover 5 houses the support member 3 between a pair of protruding walls 51, and is attached to the support member 3 by hooking the hooks 52 provided on the upper ends of the pair of protruding walls 51 onto the tips (upper ends) of the pair of side plates 31 of the support member 3 (see Figure 7).

[0064] The pair of extensions 53 are configured to cover at least a portion of the first surface 30A of the bottom plate 30 of the support member 3 that is exposed to the outside of the light source module 1 (see Figure 7).

[0065] Each extension 53 has a main piece 530, a connecting piece 531, and a side piece 532 (see Figure 7). The connecting piece 531 is formed in a rectangular flat shape and protrudes inward from both ends in the short direction of the cover body 50 along the longitudinal direction of the cover body 50. The main piece 530 is formed in a V shape when viewed from the longitudinal direction and protrudes inward from the tip of the connecting piece 531 along the longitudinal direction of the cover body 50. The side piece 532 is formed in a rectangular flat shape and protrudes upward from the tip of the main piece 530 along the longitudinal direction of the cover body 50. The upper end of the side piece 532 contacts the first surface 30A of the bottom plate 30 of the support member 3 when the cover 5 is attached to the support member 3 (see Figure 7).

[0066] Here, the cover body 50 and cover end 54 are configured to diffuse the light (illumination light) emitted from the light source module 1. Specifically, the synthetic resin forming the cover body 50 and cover end 54 (or the entire cover 5) is filled with a light-diffusing filler, thereby imparting light diffusion properties to the cover body 50 and cover end 54. Most of the light emitted from the light source module 1 (LED 10) enters the cover body 50 and cover end 54 from their inner surfaces, is diffused by the filler, and exits the cover 5 from at least a portion of the outer surface of the cover body 50 and cover end 54. However, some of the light emitted from the light source module 1 is reflected back to the support member 3 from the inner surfaces of the cover body 50 and cover end 54. Then, some of the light reflected from the inner surfaces of the cover body 50 and cover end 54 is reflected back to the surface (bottom surface) of each extension 53 of the cover 5, and then passes through the cover body 50 and cover end 54. However, some of the light emitted from the light source module 1 may be directly reflected by the surface (bottom surface) of each extension 53.

[0067] Here, it is preferable that the extension portion 53 is formed such that the reflectance of its surface (bottom surface) to visible light is higher than that of the inner surface of the cover body 50 to visible light. For example, when the extension portion 53 and the cover body 50 are integrally formed by two-color molding, it is preferable that the type or amount of filler used to fill the synthetic resin forming the extension portion 53 is different from the type or amount of filler used to fill the synthetic resin forming the cover body 50. Alternatively, the surface (bottom surface) of the extension portion 53 may be formed by two-layer two-color molding such that its reflectance to visible light is higher than that of the back surface (top surface) of the extension portion 53. In other words, the first layer, including the back surface (top surface) of the extension portion 53, is formed of synthetic resin filled with the same type and amount of filler as the cover body 50, while the second layer, including the surface (bottom surface) of the extension portion 53, is formed of synthetic resin filled with a different type of filler than that of the cover body 50, or with the same type but a different amount of filler. Alternatively, the reflectivity to visible light may be increased by applying paint to the surface of the extension 53, which is made of the same synthetic resin as the cover body 50. In this way, the light source unit A1 can improve the efficiency of extracting light emitted from the light source module 1 to the outside of the cover 5 (extraction efficiency) by covering the protrusion 34 of the support member 3 with the extension 53 of the cover 5.

[0068] (2-3) Installation of lighting fixtures Lighting fixture B1 is installed on the ceiling of the room using the following procedure.

[0069] First, the worker performing the installation pulls the power cable 92, which is drawn out from the ceiling S1, into the housing 60 through the power hole 64 in the center of the fixture body 6 (see Figure 2). The worker also pulls the signal wire 96, which is drawn out from the ceiling S1, into the housing 60 through the power hole 64 at the longitudinal end of the fixture body 6 (see Figure 2). Then, the worker inserts the two suspension bolts 90 provided in the ceiling S1 into the pair of mounting holes 63 of the fixture body 6, and attaches the fixture body 6 to the ceiling S1 by tightening nuts 91 on the suspension bolts 90 inserted into each mounting hole 63 via washers (not shown). After that, the worker electrically connects the power cable 92, which was pulled out from the central power hole 64, to the terminal block 65.

[0070] Next, as preparation for attaching the light source unit A1 to the fixture body 6, the worker inserts and holds the arms 381 of each of the two second hooking members 38 into the recesses 3930 of the temporary holding portion 393 of the mounting bracket 39 (see Figure 10). At this time, since the inner wall of the recess 3930 in the temporary holding portion 393 is inclined toward the recess 3930, the arms 381 can be guided toward the recess 3930. Therefore, the workability of the work of holding the arms 381 in the temporary holding portion 393 of the light source unit A1 can be improved. However, the arms 381 of each of the two second hooking members 38 may be inserted into the recesses 3930 of the temporary holding portion 393 of the mounting bracket 39 at the time of shipment. In that case, the above preparation work by the worker can be omitted, thereby reducing the workload on the worker and improving workability.

[0071] As the arm portion 381 is held by the temporary holding portion 393, the vertical space between the upper end of the wall portion of the light source unit A1 (the side plate 31 of the support member 3 and the protruding wall 51 of the cover 5) and the arm portion 381 is increased. Furthermore, the worker slides the hooking piece 372 of the first hooking member 37 until the rising piece 371 contacts the veneer 3911 of the mounting bracket 39 (see Figure 10).

[0072] Next, the worker inserts the hook pieces 372 of the pair of first hook members 37 of the light source unit A1 into the pair of hook holes 600 of the fixture body 6, and hooks the tip of each hook piece 372 onto the edge of each hook hole 600 on the side wall of the housing 60, thereby temporarily suspending the light source unit A1 from the fixture body 6 (see Figure 11). In this temporarily suspended state, the worker electrically connects the power connector 94 at the end of the power line 93 connected to the terminal block 65 to the power connector 23 of the power unit 2, and electrically connects the signal line 96 to the signal terminal block 41 of the communication unit 4. Specifically, the worker grasps the power connector 94 with their hand (fingers), moves the power connector 94 parallel to the longitudinal direction of the support member 3, and inserts it into the power connector 23. However, depending on the orientation of the power connector 23, the power connector 94 may be moved in a direction other than the longitudinal direction of the support member 3, for example, along the short direction of the support member 3 or the thickness direction (up and down direction) of the bottom plate 30.

[0073] Next, the worker inserts their finger into the space between the arm portion 381 and the protruding wall 51 of the second hooking member 38 and pushes up the arm portion 381 with their finger, hooking the tip of the arm portion 381 onto the two hook fittings 601 of the fixture body 6 (see Figure 12). Then, the worker uses the hook piece 372 that is touching the edge of the hooking hole 600 as a pivot point and lifts the light source unit A1 while rotating it in the shorter direction. As a result, the deformed second hooking member 38 returns to its original shape, and the light source unit A1 is held by the fixture body 6 with the power supply unit 2 and communication unit 4 housed in the housing portion 60 by the first hooking member 37 hooked onto the edge of the hooking hole 600 and the second hooking member 38 hooked onto the hook fitting 601 (see Figures 1 and 7).

[0074] The lighting fixture B1 is installed on the ceiling using the above procedure.

[0075] In this configuration, when the lighting fixture B1 is installed on the ceiling, the two suspension bolts 90, nuts 91, and washers (not shown) are all located between the power supply unit 2 and the communication unit 4 of the light source unit A1 in the longitudinal direction of the fixture body 6 (see Figures 6A and 6B). In other words, the lighting fixture B1 has the advantage of being able to shorten its height (become thinner) because the two suspension bolts 90, nuts 91, and washers (not shown) and the power supply unit 2 and communication unit 4 do not overlap in the vertical direction.

[0076] Furthermore, in the fixture body 6, two hook fittings 601 are positioned near the mounting hole 63. As a result, the distance between the position where the tightening force of the nut 91 is applied to the fixture body 6 (around the mounting hole 63 of the housing 60) and the position where the spring force of the second hooking member 38 is applied to the fixture body 6 (the position of the hook fitting 601) is shortened. Consequently, the lighting fixture B1 can suppress deflection along the longitudinal direction of the fixture body 6 and reduce the gap between the fixture body 6 and the light source unit A1 (and its cover 5).

[0077] In addition, multiple lighting fixtures B1 may be installed on the ceiling S1 in a line, with the end plates 62 of each fixture body 6 butting against each other. In this case, power cables 95 are routed between adjacent lighting fixtures B1 through holes formed by cutting out the knockout portions 620 of the end plates 62. In other words, two power cables 95 are electrically connected to the terminal block 65 of one lighting fixture B1 (see Figure 13). At this time, each power cable 95 is held in a cable holding portion 602 cut out from the bottom surface (underside) of the housing portion 60 (see Figure 13). However, the housing portion 60 does not necessarily have to have a cable holding portion 602. Here, the light source unit A1 is positioned with the power unit 2 close to one end in the short direction of the support member 3 (see Figure 7). As a result, the light source unit A1 and the lighting fixture B1 have sufficient space to accommodate the power lines 93 connecting the terminal block 65 and the power supply unit 2, as well as the power cables 95 for daisy-chain wiring, thereby improving the workability of wiring.

[0078] (2-4) Advantages of the Embodiment The support member 3 in the light source unit A1 has a pair of side plates 31 for supporting the pair of protruding walls 51 of the cover 5. The bottom plate 30 and the pair of side plates 31 are integrally formed by bending a long metal plate, and the pair of side plates 31 can prevent the long bottom plate 30 from deforming (warping) along its longitudinal direction.

[0079] Here, the support member 3 has protrusions 34 at both ends of the short side of the base plate 30 (the parts that connect to the pair of side plates 31). In other words, the light source unit A1 has the function of suppressing deformation along the longitudinal direction of the base plate 30 not only on the side plates 31 but also on the protrusions 34. As a result, the light source unit A1 can reduce the width (height) of the pair of side plates 31 while suppressing the deformation of the base plate 30 to the same extent or better than when the protrusions 34 are not provided. In other words, the light source unit A1 can be made lower in profile (shorter in height) while ensuring sufficient strength of the support member 3. Furthermore, because the lighting fixture B1 can reduce the height of the pair of side plates 31 of the support member 3 and the pair of protruding walls 51 of the cover 5, when the light source unit A1 is attached to the fixture body 6, sufficient space can be secured between the power supply unit 2 and the housing section 60 for housing power cables 92, 95, etc. (see Figure 7). Furthermore, by reducing the height of the wall portion (the pair of side plates 31 of the support member 3 and the pair of protruding walls 51 of the cover 5) of the light source unit A1, it is possible to reduce the amount of material used for the support member 3 and the cover 5, and to reduce their weight, thereby saving energy during transportation.

[0080] By the way, in the light source unit A1, the power supply unit 2 is attached to the support member 3 with the power supply unit 2 positioned close to one side plate 31 (protruding wall 51), so the power connector 23 is also positioned close to one side plate 31 (see Figure 16). Therefore, if the power connector 23 is positioned closer to the second surface 30B of the bottom plate 30 than to the tip of the wall portion (protruding wall 51), the distance of the gap between the power connector 23 and one side plate 31 becomes shorter, making it difficult for fingers holding the power connector 94 to fit into the gap.

[0081] In contrast, the light source unit A1 positions the power connector 23 of the power supply unit 2 further away from the second surface 30B than the tip of the wall portion (protruding wall 51), in other words, it protrudes above the tip of the wall portion (protruding wall 51) (see Figures 14 and 15). Therefore, even if the power connector 23 is positioned close to one of the side plates 31 (protruding wall 51), the fingers gripping the power connector 94 are less likely to interfere with the wall portion (side plate 31 and protruding wall 51).

[0082] However, by positioning the power connector 23 of the power supply unit 2 further away from the second surface 30B than the tip of the wall (protruding wall 51), the light source unit A1 can improve the workability of the installation process, specifically the process of connecting the power connector 94 to the power connector 23 and disconnecting the power connector 94 from the power connector 23. In addition, the light source unit A1 exposes a portion of the power connector 23 to the outside of the power supply case 21 through a window hole provided in the first side wall 211 of the power supply case 21. Therefore, the light source unit A1 can protect the power connector 23 with the power supply case 21 without reducing the workability when connecting the power connector 94 to the power connector 23.

[0083] Furthermore, the light source unit A1 also has a signal terminal block 41 to which the external signal line 96 is electrically connected, which protrudes above the tip of the wall portion (protruding wall 51), similar to the power connector 23 (see Figure 6A). Therefore, the light source unit A1 is designed so that the wall portion (side plate 31 and protruding wall 51) does not easily get in the way when connecting the signal line 96 to the signal terminal block 41, thereby improving the work efficiency of connecting the signal line 96 to the signal terminal block 41, i.e., the installation work.

[0084] Furthermore, by reducing the height of the wall portion (side plate 31 and protruding wall 51) of the light source unit A1, at least a portion of the arm portion 381 of the second hooking member 38 protrudes from the tip of the wall portion (side plate 31 and protruding wall 51), allowing the arm portion 381 to be easily pushed up with a finger during the installation work on the fixture body 6. As a result, the light source unit A1 can improve the workability of the installation work on the fixture body 6. Moreover, when viewed from the short side direction of the support member 3, the space created between the tip of the protruding wall 51 and the portion of the arm portion 381 that protrudes from the tip of the protruding wall 51 is large enough to insert at least the tip of a test finger. As a result, the arm portion 381 of the light source unit A1 can be easily pushed up with a person's finger.

[0085] Furthermore, the light source unit A1 can widen the distance between the arm portion 381 and the wall portion (side plate 31 and protruding wall 51) in the short direction of the support member 3 by temporarily holding the arm portion 381 of the second hooking member 38 to the temporary holding portion 393 provided on the mounting bracket 39. As a result, the arm portion 381 of the light source unit A1 can be pushed up even more easily with a finger during the installation work on the fixture body 6.

[0086] Furthermore, by lowering the wall portion (side plate 31 and protruding wall 51) of the light source unit A1, the weight of the support member 3 and cover 5 can be reduced, and manufacturing costs can be lowered. In addition, by lowering the wall portion of the light source unit A1, it becomes easier to rotate the hook piece 372 of the first hooking member 37 as a pivot point, and the power supply unit 2 and other components can be smoothly inserted into the housing portion 60 of the fixture body 6, thereby further improving workability when attaching and detaching the light source unit A1 to the fixture body 6. Moreover, by lowering the wall portion of the light source unit A1, when rotating the hook piece 372 of the first hooking member 37 as a pivot point, it becomes easier for the worker to look inside the housing portion 60, making it less likely for wiring such as the power line 93 and signal line 96 to get caught between the lower end of the housing portion 60 and the cover 5, thus making it easier to prevent so-called wire jamming.

[0087] Here, the light source unit A1 has a side plate 31 at the short end of the bottom plate 30 of the support member 3, so deformation along the longitudinal direction of the bottom plate 30 can be suppressed. Similarly, the light source unit A1 has a protruding wall 51 on the cover body 50 that is aligned with the longitudinal direction of the cover body 50, so deformation along the longitudinal direction of the cover body 50 can be suppressed.

[0088] (3) Modified examples of embodiments Next, several modifications of the light source unit A1 and lighting fixture B1 according to the embodiment will be described. However, the basic configuration of the light source unit A1 and lighting fixture B1 of each modification described below is the same as the basic configuration of the light source unit A1 and lighting fixture B1 according to the embodiment. Therefore, components that are common or substantially common with the basic configuration of the light source unit A1 and lighting fixture B1 according to the embodiment will be denoted by the same reference numerals, and their illustration and description will be omitted as appropriate. In the following description, "substantially common components" means components that differ slightly in shape, size, etc., but have the same function. Furthermore, each modification described below can be appropriately combined with the embodiment and other modifications.

[0089] (3-1) Variation 1 The lighting fixture B1 in Modification Example 1 is characterized by the structure of the fixture body 6. In Modification Example 1, the fixture body 6 is attached to the ceiling S1 so as to cover the recessed hole F1 provided in the ceiling S1 (see Figures 18 and 19).

[0090] As shown in Figure 18, the main body of the device 6 in the modified example 1 includes a top plate unit 68 and a reflector unit 69.

[0091] The top plate unit 68 has a top plate 680 formed in the shape of a long rectangular flat plate, and a pair of side walls 681 that extend downward along the longitudinal direction of the top plate 680 from both ends in the short direction of the top plate 680. Preferably, the top plate unit 688 is formed integrally with the pair of side walls 681 by bending a metal plate, such as a galvanized steel plate. The top plate 680 has a plurality of mounting holes 63 and a plurality of power supply holes 64. A terminal block 65 is attached to the underside of the top plate 680. A plurality of power lines 93 are electrically connected to the terminal block 65. Power connectors 94 are attached to the ends of the plurality of power lines 93 (see Figure 18). Furthermore, one hook fitting 601 is provided at each end in the longitudinal direction of the top plate 680. Furthermore, one groove 682 is provided at each of the longitudinal ends of one side wall 681, which serves as a hook hole 600 when the top plate unit 68 and the reflector unit 69 are joined together.

[0092] The reflector unit 69 includes a pair of first reflectors 691, a pair of second reflectors 692, a frame 693, and a pair of projections 694.

[0093] Each of the pair of first reflectors 691 is formed in the shape of a rectangular flat plate. A projection 694 protrudes upward from the upper end of each of the pair of first reflectors 691. Each of the pair of projections 694 is formed in the shape of an inverted L when viewed from the longitudinal direction (see Figure 18). Each of the pair of second reflectors 692 is formed in the shape of a trapezoidal flat plate (see Figure 18). Each of the pair of second reflectors 692 has two hypotenuses that are connected to the longitudinal end of the first reflector 691 (see Figure 18). The frame 693 is formed in the shape of a long rectangular frame. The frame 693 is connected to the lower ends of the pair of first reflectors 691 and the pair of second reflectors 692. In other words, the reflector unit 69 is formed in the shape of a long pyramidal truncated square with the top and bottom surfaces open.

[0094] The fixture body 6 is constructed by fixing a pair of projections 694 to a pair of side walls 681 and connecting the top plate unit 68 to the reflector unit 69. At both ends in the longitudinal direction of the fixture body 6, the area surrounded by the top plate unit 68 and the pair of second reflectors 692 is open.

[0095] In the modified example 1, the fixture body 6 consists of a top plate unit 68 and a reflector unit 69 inserted into a recessed hole F1 provided in the ceiling S1, and the top plate 680 of the top plate unit 68 is attached to a suspension bolt 90 hanging from the building structure. The frame 693 rests against the lower surface (ceiling surface) of the ceiling S1 from below, covering the edge of the recessed hole F1 (see Figure 19).

[0096] The light source unit A1 in Modification 1 is identical to the light source unit A1 in the embodiment. Therefore, the light source unit A1 is held to the fixture body 6 by the spring force of the hook piece 372 of the first hooking member 37 hooked onto the edge of the hooking hole 600, and the second hooking member 38 hooked onto the hooking fitting 601, just as in the embodiment.

[0097] (3-2) Modification example 2 As shown in Figure 20, the light source unit A1 of the modified example has recesses 310 and 512 in the wall portion (side plate 31 and protruding wall 51) that are lower in height than the rest of the wall portion, located adjacent to the power connector 23 along the short direction of the support member 3.

[0098] However, in the modified light source unit A1, recesses 310 and 512 are provided in the wall portion (side plate 31 and protruding wall 51) adjacent to the power connector 23 along the short direction of the support member 3, thereby further improving the workability when connecting the power connector 94 to the power connector 23. However, in the modified light source unit A1, recesses 310 and 512 may be provided only in one of the pair of side plates 31 and protruding wall 51 that is closer to the power unit 2.

[0099] Furthermore, the recess 310 in the side plate 31 and the recess 512 in the protruding wall 51 may be provided at the longitudinal ends of the side plate 31 and the protruding wall 51, respectively (see Figure 21A). Also, the shape of the recesses 310 and 512 is not limited to a quadrilateral, but may be a shape other than a polygon, such as a semicircle (see Figure 21B).

[0100] (3-3) Modification example 3 The light source unit A1 of the modified version 3 is characterized by the placement of the power supply unit 2 approximately in the center of the short side of the base plate 30, as shown in Figure 22.

[0101] However, in the modified example 3, the light source unit A1 is positioned approximately in the center of the short side of the bottom plate 30, thereby increasing the distance between the power connector 23 and the wall (side plate 31 and protruding wall 51). As a result, the light source unit A1 of the modified example 3 can further improve the workability when connecting the power connector 94 to the power connector 23.

[0102] (3-4) Modification 4 The light source unit A1 of the modified example 4 is characterized by the placement of the power connector 23 outside the power supply case 21.

[0103] As shown in Figure 23, in the modified example 4, the power connector 23 is provided at the end of the lead wire 27 drawn out from the power supply case 21 and is supported by the support member 3 via a support bracket 26. The support bracket 26 is formed to stand upright from the second surface 30B of the bottom plate 30. The power connector 23 is inserted through a hole that penetrates the top of the support bracket 26 and is supported by embracing the power connector 23. The support bracket 26 may be fixed to the bottom plate 30 or side plate 31 by appropriate methods such as screwing, crimping, or adhesive, or it may be cut out from the bottom plate 30 or side plate 31 and formed integrally with the support member 3.

[0104] However, in the modified example 4, the light source unit A1 can increase the flexibility of the installation location of the power connector 23 by placing the power connector 23 outside the power case 21.

[0105] (3-5) Modification 5 Modification 5, the light source unit A1, is characterized by the fact that the terminal block 65 is attached to the support member 3.

[0106] In Modification 5, the terminal block 65 is attached to the support member 3, not the fixture body 6 (see Figure 24). The terminal block 65 is fixed to the bottom plate 30 or side plate 31 by appropriate methods such as screwing, crimping, or adhesive. The terminal block 65 electrically connects the lead wires 27 drawn out from the power supply case 21 and the power cable 92 drawn in from the power supply hole 64 of the fixture body 6. In other words, in the light source unit A1 of Modification 5, the power cable 92 is the second connecting component and the terminal block 65 is the first connecting component.

[0107] However, in the modified example 5, the light source unit A1 increases the flexibility of the installation location of the first connecting component by using the terminal block 65 as the first connecting component.

[0108] (3-6) Modification 6 The light source unit A1 of the modified version 6 is characterized by the configuration of the support member 3.

[0109] In the modified example 6, the support member 3 has a projection 34 formed in the shape of a trough (see Figure 25). The tip (upper end) of the side plate 31 may protrude outward so that the hooking portion 52 of the projection wall 51 can easily hook onto it (see Figure 26).

[0110] Furthermore, the bottom portion 340 of the projection 34 may be formed to slope downward outward (see Figure 27). In addition, the projection 34 may be formed in a V-shape (see Figure 28). Alternatively, at least one of the inner side portion 341 and the outer side portion 342 of the projection 34 may be formed to slope with respect to the thickness direction (vertical direction) of the base plate 30 (see Figures 29 and 30).

[0111] Furthermore, the inner side portion 341 of the projection 34 may be formed in a stepped shape (see Figure 31). The tip (upper end) of the side plate 31 may be bent in an L-shape so that the hook portion 52 of the projection wall 51 can easily hook onto it (see Figure 32). Also, the outer side portion 342 may be formed in a stepped shape (see Figure 33).

[0112] Furthermore, the projection 34 may be formed such that at least one of the bottom portion 340, the inner side portion 341, and the outer side portion 342 is inclined (see Figures 34-37).

[0113] Alternatively, beads 302 may be provided on the inside of each projection 34 in the bottom plate 30 of the support member 3 (see Figures 38 and 39). By providing beads 302 on the bottom plate 30 in this way, the strength of the support member 3 can be improved.

[0114] The support member 3 may have a side plate 31 at only one end in the shorter direction (see Figure 40A). Alternatively, the support member 3 may have only a bottom plate 30 without any side plates 31 (see Figure 40B). Or, the support member 3 may have a pair of side plates 31 protruding in different directions (upward and downward) in the thickness direction (vertical direction) of the bottom plate 30 (see Figure 40C).

[0115] (3-7) Modification 7 Incidentally, in the light source unit A1, abnormal noises may occur due to the difference in thermal expansion coefficients between the metal support member 3 and the synthetic resin cover 5. In other words, at the contact surface between the support member 3 and the cover 5, when the expansion and contraction force of the synthetic resin cover 5, which has a relatively large thermal expansion coefficient, exceeds the maximum static friction force, the strain that had been generated in the cover 5 is suddenly released. As the strain in the cover 5 is suddenly released, a frictional noise accompanied by vibration is generated at the contact surface between the cover 5 and the support member 3. This phenomenon is generally known as the stick-slip phenomenon. Furthermore, it is thought that abnormal noises due to the stick-slip phenomenon are more likely to occur the larger the contact area between the two members (support member 3 and cover 5).

[0116] Therefore, in the modified example 7, the light source unit A1 is configured such that the tip (upper end) of the extension portion 53 of the cover 5 is lifted away from the first surface 30A of the support member 3 (the bottom plate 30) and does not come into contact with it (see Figure 41). In other words, by preventing the tip of the side piece 532 from coming into contact with the support member 3, the generation of abnormal noise associated with the stick-slip phenomenon can be suppressed.

[0117] Furthermore, the extension portion 53 in the modified example 7 does not necessarily have a side piece 532 (see Figure 42). In this case, it is preferable that the tip of the main piece 530 of the extension portion 53 does not come into contact with the first surface 30A of the base plate 30, but it may come into contact with it.

[0118] Alternatively, in the modified example 7, the portion of the main piece 530 of the extension 53 that is inside the projection 34 of the support member 3 may be formed to be approximately parallel to the first surface 30A of the bottom plate 30 (see Figure 43). Furthermore, the main piece 530 of the extension 53 may be directly connected to the cover body 50 without using the connecting piece 531 (see Figure 44).

[0119] Here, at least a portion of the extension 53 may be formed from a different material (synthetic resin material) than the cover body 50 (two-color molding). For example, the entire extension 53 may be filled with filler to form it white, while the cover body 50 may be filled with less filler than the extension 53, or filled with a different filler to form it milky white. The tip of the extension 53 may or may not contact the first surface 30A of the bottom plate 30 of the support member 3. When the tip of the extension 53 is in contact with the first surface 30A of the bottom plate 30, there is the advantage that the intrusion of foreign matter can be suppressed.

[0120] (3-8) Variation 8 The light source unit A1 of the modified version 8 is characterized by the structure of the support member 3 and the cover 5.

[0121] In modified example 8, the support member 3 has a flat portion 35 between the protrusion 34 and the side plate 31 (see Figure 45). The flat portion 35 is parallel to the bottom plate 30 and is located below the bottom plate 30.

[0122] In the modified example 8, the tip of the extension portion 53 of the cover 5 is positioned opposite the substrate 11 of the light source module 1 with a gap between them, along the thickness direction (vertical direction) of the bottom plate 30 (see Figure 45).

[0123] However, in the modified example 8, if the substrate 11 of the light source unit A1 is fixed to the support member 3 with adhesive, even if the adhesive peels off and the substrate falls, the extension portion 53 of the cover 5 will catch the substrate 11, thus preventing the substrate 11 from falling. Furthermore, if the extension portion 53 is given a reflective function, the light extraction efficiency can be further improved. In addition, by preventing contact between the extension portion 53 and the substrate 11, the generation of abnormal noise associated with the stick-slip phenomenon can be suppressed.

[0124] (3-9) Modification 9 The light source unit A1 of the modified version 9 is characterized by the structure of the support member 3 and the cover 5.

[0125] In the modified example 9, the support member 3 has the bottom surface of the projection 34 inclined upward toward the short end of the bottom plate 30 (see Figure 46).

[0126] In modified example 9, the cover 5 has the end of the main piece 530 of the extension 53 closest to the side piece 532 formed flat so as to be parallel to the bottom plate 30 (see Figure 46). Also, the cover 5 in modified example 9 is provided with a projection 520 that protrudes upward from the tip of the hooking portion 52. However, the projection 520 is not provided in a position that overlaps with the arm portion 381 of the second hooking member 38 in the short direction of the cover body 50.

[0127] However, the light source unit A1 of the modified example 9 can improve the strength of the protruding wall 51 while improving the workability of the installation work on the fixture body 6.

[0128] (3-10) Variation 10 The light source unit A1 of modification 10 is characterized by the structure of the cover 5.

[0129] In the modified example 10, the cover 5 is provided with a projection 5301 on the main piece 530 of the extension 53 (see Figure 47). The projection 5301 protrudes diagonally upward from the main piece 530 toward the bottom plate 30 and is in contact with the projection 34. The projection 5301 may be provided along the entire length of the main piece 530, or it may be provided on only a portion of the length of the main piece 530.

[0130] However, in the modified light source unit A1 of Modified Example 10, the movement of the support member 3 and the cover 5 can be suppressed by providing a projection 5301 on the main piece 530 of the extension 53. For example, when the light source unit A1 of Modified Example 10 is attached to the fixture body 6, the stress applied to the cover 5 may cause the cover body 50 to deform in a direction that causes the pair of protruding walls 51 to move away from each other. In this case, the projection 5301 provided on the main piece 530 contacts the protrusion 34, suppressing the deformation of the cover body 50, thereby preventing the cover 5 from coming off the support member 3. Furthermore, in the light source unit A1 of Modified Example 10, by providing a projection 5301 on the main piece 530, the position of the cover 5 relative to the support member 3 can be easily adjusted when attaching the cover 5 to the support member 3. Note that the projection 5301 does not need to always be in contact with the protrusion 34; as described above, there may be a gap between the projection 5301 and the protrusion 34 that allows contact when the cover body 50 deforms. Furthermore, in the modified example 10, the light source unit A1 may have the projection 5301 protruding upward along the protrusion 34. Alternatively, in the modified example 10, the light source unit A1 may have the projection 5301 protruding in the opposite direction (towards the protrusion 34) (see Figure 48). In this case, in the modified example 10, the light source unit A1 may have the tip (upper end) of the projection 5301 bent into an L-shape (see Figure 49). In addition, in the modified example 10, the light source unit A1 may have the projection 5301 protruding from the main piece 530 along the thickness direction of the bottom plate 30, and the tip of the projection 5301 bent into a V-shape (see Figure 50).

[0131] In addition, in the modified example 10, the light source unit A1 may have the main piece 530 of the extension 53 shortened so that the side piece 532 is in contact with the side of the projection 34 (the side opposite to the side plate 31) (see Figure 51).

[0132] (3-11) Variation 11 The light source unit A1 of the modified example 11 is characterized by the structure of the protrusion 34 of the support member 3 and the extension 53 of the cover 5.

[0133] In the modified example 11, the protrusion 34 is formed so that the side surface extending from the bottom plate 30 is inclined diagonally downward toward the side plate 31 (see Figure 52A).

[0134] In Modification 11, the extension portion 53 is directly connected to the cover body 50 without a connecting piece 531, as illustrated in Modification 10 (see Figure 52A). In addition, the extension portion 53 includes a projection 5301 similar to that of the extension portion 53 in Modification 13, as well as a rib 5302 that protrudes upward from the upper surface of the main piece 530. The rib 5302 is formed so as to be able to contact the lower bottom surface of the projection 34. The rib 5302 may be provided along the entire length of the main piece 530, or it may be provided on only a portion of the length of the main piece 530.

[0135] However, in the modified light source unit A1 of Modified Example 11, by providing a rib 5302 on the main piece 530 of the extension 53, the abnormal noise generated by the repeated contact and separation of the support member 3 and the cover 5 due to vibration, etc., can be reduced. In addition, in the modified light source unit A1 of Modified Example 11, a rib may be provided that protrudes downward from the lower surface of the projection 34 of the support member 3, instead of the rib 5302 provided on the main piece 530 of the extension 53, or together with the rib 5302.

[0136] In addition, the projection 5301 in the modified example 11 may protrude diagonally upward from the main piece 530 toward the light source module 1 (see Figure 52A), or it may protrude diagonally upward from the main piece 530 toward the projection 34 (see Figure 52B).

[0137] (3-12) Variation 12 The light source unit A1 of the modified example 12 is characterized by the structure of the protrusion 34 of the support member 3 and the extension 53 of the cover 5.

[0138] In Modification 12, the projection 34 is formed in a V-shape, similar to the projection 34 illustrated in Modification 9 (see Figure 53). In addition, the extension 53 in Modification 12 has a projection 5301 that protrudes diagonally upward from the main piece 530 so as to approach the projection 34.

[0139] However, in the modified example 12, the light source unit A1 can suppress the movement of the support member 3 and the cover 5 from each other by providing a projection 5301 on the main piece 530 of the extension 53.

[0140] (3-13) Variation 13 The light source unit A1 of the modified example 13 is characterized by the structure of the protrusion 34 of the support member 3 and the extension 53 of the cover 5.

[0141] In modified example 13, the projection 34 is formed in a semi-cylindrical shape (see Figure 54). In addition, in modified example 13, the extension 53 is formed in a curved shape so that a part of the main piece 530 (the part that connects to the connecting piece 531) is in contact with the projection 34.

[0142] However, the light source unit A1 of the modified example 13, with the above configuration, can reduce stress concentration on the main piece 530 of the protrusion 34 and extension 53.

[0143] (3-14) Modification 14 The light source unit A1 of the modified version 14 is characterized by the hook portion 52 of the cover 5.

[0144] For example, in modified example 14, the hook portion 52 is formed to bend at almost a right angle from the tip (upper end) of the protruding wall 51 (see Figure 55). Alternatively, the hook portion 52 in modified example 14 may be formed to bend at an acute angle from the tip of the protruding wall 51 (see Figure 56). Alternatively, the hook portion 52 in modified example 14 may be formed in the shape of an inverted L, or in the shape of an inverted L with a part (upper part) curved upwards (see Figure 57).

[0145] (3-15) Variation 15 The light source unit A1 of the modified example 15 is characterized by the structure of the extension portion 53 of the cover 5.

[0146] In the modified example 15, the extension 53 does not have a connecting piece 531, and the main piece 530 and the cover body 50 are directly connected (see Figure 58). Therefore, in the modified example 15, the cover 5 has a linear connection between the short end of the cover body 50 and the protruding wall 51.

[0147] However, since the light source unit A1 of the modified example 15 eliminates the protrusions at both ends of the cover 5 in the short direction, the light extraction efficiency in the short direction of the cover 5 can be improved.

[0148] (3-16) Variation 16 The light source unit A1 of the modified example 16 is characterized by the mounting structure of the support member 3 and the cover 5.

[0149] In the modified example 16, the light source unit A1 has the protruding wall 51 of the cover 5 attached to the side plate 31 of the support member 3 by fastening components 55 (see Figure 59). The fastening components 55 are stepped screws. However, the fastening components 55 are not limited to stepped screws; for example, rivets or the like may also be used.

[0150] In modified example 16, the side plate 31 of the support member 3 has a plurality of screw holes 312. The plurality of screw holes 312 are provided at intervals along the longitudinal direction of the side plate 31. Although the support member 3 in modified example 16 does not have a protrusion 34, it may have a protrusion 34.

[0151] In Modification 16, the protruding wall 51 of the cover 5 has a plurality of screw insertion holes 511. The plurality of screw insertion holes 511 are elongated holes whose longitudinal direction coincides with the longitudinal direction of the cover 5, and are provided along the longitudinal direction of the protruding wall 51 at intervals similar to those of the screw holes 312. In Modification 16, the protruding wall 51 is taller than the side plate 31, but its height is shorter only at the position facing the second hooking member 38 along the short direction of the cover 5.

[0152] However, in the modified light source unit A1 of Modified Example 16, the protruding wall 51 of the cover 5 is attached to the side plate 31 of the support member 3 by fastening components 55, thereby improving the mounting strength of the cover 5 to the support member 3. Moreover, in the light source unit A1 of Modified Example 16, the screw insertion hole 511 of the protruding wall 51 through which the fastening components 55 are inserted is an elongated hole, so the stress applied from the fastening components 55 to the protruding wall 51 when the cover 5 expands longitudinally due to thermal expansion can be reduced.

[0153] In addition, in the modified example 16, the light source unit A1 may have a side plate 31 that is higher than the height of the protruding wall 51 (see Figure 60). In this case, it is desirable to partially reduce the height by providing a recess (notch) along the short side of the support member 3 at a position opposite the second hooking member 38.

[0154] (3-17) Variation 17 The light source unit A1 of the modified example 17 is characterized by the mounting structure of the support member 3 and the cover 5.

[0155] In the modified example 17, the light source unit A1 has the entire side plate 31 of the support member 3 curled upward (see Figure 61). Although the light source unit A1 in the modified example 17 does not have a protrusion 34 on the support member 3, a protrusion 34 may be provided.

[0156] Furthermore, the light source unit A1 of the modified example 17 has a recess 513 at the base of the protruding wall 51 of the cover 5 for fitting the curled side plate 31 (see Figure 61). Although the light source unit A1 of the modified example 17 does not have an extension portion 53 on the cover 5, an extension portion 53 may be provided.

[0157] However, in the modified example 17, the light source unit A1 allows the cover 5 to be attached to the support member 3 by fitting the curled side plate 31 into the recess 513, thereby improving the workability of the installation process.

[0158] (4) Summary The lighting device (light source unit A1) according to the first aspect of this disclosure is detachably attached to a long fixture body (6). The lighting device according to the first aspect comprises a long light source (light source module 1), a power supply device (20), a long support member (3), connecting members (power connectors 23, 94), and wall portions (side plate 31 of the support member 3, protruding wall 51 of the cover 5). The power supply device (20) converts first power supplied from an external power source (P1) into second power, and supplies the converted second power to light the light source. The support member (3) has a first surface (30A) and a second surface (30B) opposite to the first surface (30A), supporting the light source on the first surface (30A) side and supporting the power supply device (20) on the second surface (30B) side. The connecting members electrically connect the external power source (P1) and the power supply device (20). The wall portion rises from one or both ends of the support member (3) in the short direction toward the second surface (30B). The connecting member has a first connecting component (power connector 23) electrically connected to the power supply unit (20), and a second connecting component (power connector 94) electrically connected to the external power supply (P1) and electrically and mechanically detachably connected to the first connecting component. The first connecting component is further away from the second surface (30B) than the tip of the wall portion.

[0159] In the lighting device according to the first embodiment, the first connecting component is positioned further away from the second surface (30B) than the tip of the wall, so the wall is less likely to get in the way when connecting the second connecting component to the first connecting component. As a result, the lighting device according to the first embodiment can improve the workability of the installation work.

[0160] A lighting device according to a second aspect of this disclosure can be realized by combining it with the first aspect. In the lighting device according to the second aspect, the support member (3) preferably has a base plate (30) having a first surface (30A) and a second surface (30B), and a side plate (31) rising from one or both ends of the base plate (30) in the short direction toward the second surface (30B). It is preferable that at least a part of the wall portion is formed by the side plate (31).

[0161] The lighting device according to the second embodiment has side plates (31) that rise from one or both ends in the short direction of the base plate (30) toward the second surface (30B), so that deformation of the base plate (30) can be suppressed by the side plates (31).

[0162] A lighting device according to a third aspect of the present disclosure can be realized in combination with the first or second aspect. The lighting device according to the third aspect preferably further comprises a light-transmitting cover (5) supported by a support member (3) so as to cover the light source. The cover (5) preferably has an elongated cover body (50) facing the first surface (30A) and a protruding wall (51) projecting from one end of the cover body (50) in the short direction toward the second surface (30B). It is preferable that at least a part of the wall portion is formed by the protruding wall (51).

[0163] The lighting device according to the third embodiment has a protruding wall (51) that projects from one end of the cover body (50) in the short direction toward the second surface (30B), so that deformation of the cover body (50) can be suppressed by the protruding wall (51).

[0164] A lighting device according to a fourth aspect of the present disclosure can be realized in combination with any of the first to third aspects. In the lighting device according to the fourth aspect, the wall portion preferably has recesses (310, 512) that are lower in height than the rest of the wall portion, located adjacent to the first connecting component along the short direction of the support member (3).

[0165] The lighting device according to the fourth embodiment can further improve the workability when connecting the second connecting component to the first connecting component by providing recesses (310, 512).

[0166] A lighting device according to a fifth aspect of this disclosure can be realized in combination with any of the first to fourth aspects. The lighting device according to the fifth aspect preferably further comprises a power supply case (21) housing a power supply unit (20). The power supply case (21) is preferably positioned towards one end of the support member (3) in the short direction.

[0167] In the fifth embodiment of the lighting device, if the power supply case (21) is positioned towards one end in the short direction of the support member (3), sufficient space can be secured for housing electric wires and the like, thereby improving the workability of wiring work.

[0168] A lighting device according to a sixth aspect of the present disclosure can be realized in combination with any of the first to fifth aspects. The lighting device according to the sixth aspect preferably further comprises a power supply case (21) housing a power supply unit (20). The first connecting component is preferably housed in the power supply case (21) such that at least a portion of it is exposed outside the power supply case (21).

[0169] The lighting device according to the sixth embodiment protects the first connecting component with the power supply case (21) without reducing the workability when connecting the second connecting component to the first connecting component.

[0170] A lighting device according to the seventh aspect of this disclosure can be realized by combining it with the sixth aspect. In the lighting device according to the seventh aspect, the first connecting component and the second connecting component are preferably connector components.

[0171] In the lighting device according to the seventh embodiment, the first connecting component and the second connecting component are connector components, thereby improving the work efficiency of connecting the first connecting component and the second connecting component.

[0172] A lighting device according to the eighth aspect of this disclosure can be realized in combination with any of the first to sixth aspects. In the lighting device according to the eighth aspect, the second connecting component preferably includes an electric wire (power cable 92). The first connecting component (terminal block 65) is preferably electrically and mechanically connected so that the electric wire can be plugged in and out.

[0173] The lighting device according to the eighth embodiment can increase the degree of freedom in the installation of the first connecting component.

[0174] A lighting device according to the ninth aspect of this disclosure can be realized in combination with the second aspect. In the lighting device according to the ninth aspect, the support member (3) preferably further has a projection (34) provided at at least one end in the short direction of the bottom plate (30) and projecting toward the first surface (30A).

[0175] In the lighting device according to the ninth embodiment, since the support member (3) has a protrusion (34), the height of the wall can be reduced while suppressing deformation (warping) along the longitudinal direction of the base plate (30). Therefore, in the lighting device according to the ninth embodiment, the wall is less likely to get in the way when connecting the second connecting part to the first connecting part. As a result, the lighting device according to the ninth embodiment can further improve the workability of the installation work.

[0176] A lighting device according to a tenth aspect of the present disclosure can be realized by combining it with a ninth aspect. The lighting device according to the tenth aspect preferably further comprises a light-transmitting cover (5) supported by a support member (3) so as to cover the light source. The cover (5) preferably has an elongated cover body (50) facing the first surface (30A), a protruding wall (51) projecting from one end of the cover body (50) in the short direction toward the second surface (30B), and an extension (53) extending from the cover body (50) along the first surface (30A) to cover the protrusion (34).

[0177] The lighting device according to the tenth embodiment can improve the efficiency of extracting light that passes through the cover (5) by having an extension (53) that covers the protrusion (34).

[0178] A lighting fixture (B1) according to the eleventh aspect of this disclosure comprises a lighting device according to the first to tenth aspects and a fixture body (6) that detachably supports the lighting device.

[0179] The lighting fixture (B1) according to the 11th embodiment can improve the workability of the installation work in which a lighting device according to any of the 1st to 11th embodiments is attached to the fixture body (6). [Explanation of symbols]

[0180] A1 Light source unit (lighting device) B1 Lighting fixtures P1 External power supply 1. Light source module (light source) 3. Support member 5 Cover 6. Main body of the device 20 Power supply 21 Power Supply Cases 23 Power connector (first connecting component) 30 Bottom plate 30A 1st side 30B 2nd side 31 Side plate (wall) 34. Protrusion 50 Cover body 51 Projection wall (wall part) 53 Extension 65 Terminal block (first connecting component) 92 Power cable (power cord) 94 Power connector (second connecting component) 310 recess 512 recess

Claims

1. A lighting device that is detachably attached to a long fixture body, A long light source, A power supply device that converts a first power supplied from an external power source into a second power, and supplies the converted second power to light up the light source, A long support member having a first surface and a second surface opposite to the first surface, supporting the light source on the first surface side and supporting the power supply on the second surface side, A connecting member that electrically connects the external power supply and the power supply device, A wall portion rising from one or both ends in the short direction of the support member toward the second surface, Equipped with, The aforementioned connecting member is A first connecting component electrically connected to the power supply device, A second connecting component is electrically connected to the external power supply and electrically and mechanically detachably connected to the first connecting component, It has, The first connecting component is exposed from the tip of the wall portion when viewed from the short side of the support member. Lighting device.

2. The support member comprises a bottom plate having the first surface and the second surface, and side plates rising from one or both ends of the bottom plate in the short direction toward the second surface. At least a portion of the wall is formed by the side plate. The lighting device according to claim 1.

3. The system further comprises a cover that is translucent and is supported by the support member so as to cover the light source, The cover comprises a long cover body facing the first surface, and a protruding wall projecting toward the second surface from one end of the cover body in the shorter direction. At least a portion of the wall is formed by the protruding wall. The lighting device according to claim 1 or 2.

4. The wall portion has a recess that is lower in height than the rest of the wall portion, located adjacent to the first connecting component along the shorter direction of the support member. The lighting device according to claim 1 or 2.

5. The power supply case further comprises the aforementioned power supply unit, The power supply case is positioned towards one end of the support member in the shorter direction. The lighting device according to claim 1 or 2.

6. The power supply case further comprises the aforementioned power supply unit, The first connecting component is housed in the power supply case such that at least a portion of it is exposed outside the power supply case. The lighting device according to claim 1 or 2.

7. The first connecting component and the second connecting component are connector components. The lighting device according to claim 6.

8. The second connecting component includes a wire. The first connecting component is electrically and mechanically connected to the electric wire in a removable manner. The lighting device according to claim 1 or 2.

9. The support member further has a projection provided at at least one end of the bottom plate in the short direction and projecting toward the first surface side. The lighting device according to claim 2.

10. The system further comprises a cover that is translucent and is supported by the support member so as to cover the light source, The cover comprises a long cover body facing the first surface, a protruding wall projecting from one end of the cover body in the shorter direction toward the second surface, and an extension extending from the cover body along the first surface to cover the protruding portion. Having, The lighting device according to claim 9.

11. A lighting device according to claim 1 or 2, The fixture body that detachably supports the aforementioned lighting device, Equipped with, Lighting fixtures.

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