Light source unit and illumination device

Abstract

To provide a light source unit capable of wiring work with small man-hours, and an illumination device.SOLUTION: An illumination device 10 has: a light source unit 12 which is fitted to a unit body 11 having a long top plate part 20, a wiring hole 27 provided on the top plate part 20 and a first terminal board 28 arranged in a direction on one end side in a longitudinal direction of the top plate part 20 relative to the wiring hole 27; a long chassis 40; a light source 41 arranged on one surface side of the chassis 40; a second terminal board 13 which is arranged on the other surface side of the chassis 40 and to which an electric wire from outside is connected; and a first power supply unit 45 which is electrically connected to the second terminal board 13, converts power supplied by the second terminal board 13, and supplies the light source 41 with it. In a frontal view seen from the other surface side, a dimension from the center of the wiring hole 27 to the second terminal board 13 is equal to or smaller than a dimension from the center of the wiring hole 27 to the first terminal board 28.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] FIELD An embodiment of the present invention relates to a light source unit and a lighting device. [Background technology]

[0002] Conventionally, there is a lighting device that has a terminal block on a fixture body that is fixed to the ceiling and a light source unit that is detachably attached to the fixture body. In such lighting devices, the light source unit can be easily replaced by removing the existing light source unit from the existing fixture body and attaching a new light source unit.

[0003] In such lighting devices, the light source unit can be easily replaced, but the wiring work from the existing terminal block of the fixture body to the newly installed light source unit is time-consuming, and there is room for improvement. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-56039 Summary of the Invention [Problem to be solved by the invention]

[0005] The problem to be solved by the present invention is to provide a light source unit and a lighting device that allow wiring work with fewer steps. [Means for solving the problem]

[0006] The lighting device of the embodiment is a light source unit attached to a fixture body having a long top plate portion, a wiring hole provided in the top plate portion, and a first terminal block arranged toward one end of the top plate portion in the longitudinal direction relative to the wiring hole, and has a long chassis, a light source arranged on one side of the chassis, a second terminal block arranged on the other side of the chassis and to which an electric wire from outside is connected, and a first power supply unit electrically connected to the second terminal block and converts the power supplied from the second terminal block and supplies it to the light source, and when viewed from the front from the other side, the dimension from the center of the wiring hole to the second terminal block is less than the dimension from the center of the wiring hole to the first terminal block. [Effects of the Invention]

[0007] According to the embodiment, improvement in workability can be expected. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a lighting device showing a first embodiment. [Figure 2] FIG. [Figure 3] FIG. 2 is a perspective view of a light source unit of the illumination device. [Figure 4] FIG. 5 is a cross-sectional view of the lighting device taken along the line BB. [Figure 5] FIG. 2 is a top view of a light source unit of the illumination device. [Figure 6] FIG. 2 is a partially enlarged view of a light source unit of the illumination device. [Figure 7] 2 is a cross-sectional view of the lighting device taken along line AA with the light source unit removed from the fixture body. FIG. [Figure 8] FIG. 2 is a cross-sectional view of the illumination device taken along line AA. [Figure 9] FIG. 10 is a perspective view of a lighting device showing a second embodiment. [Figure 10] FIG. 2 is a top view of a light source unit of the illumination device. [Figure 11] FIG. 3 is a cross-sectional view of the lighting device with the light source unit removed. [Figure 12] FIG. [Figure 13] FIG. 10 is a perspective view showing a modified example of the second terminal block of the lighting device. [Figure 14] 10 is a partially enlarged view showing a modified example of the second terminal block of the lighting device. FIG.

[0009] The first embodiment will be described below with reference to the drawings.

[0010] 1 to 4 show lighting device 10. In the following description, lighting device 10 will be described assuming that it is installed on, for example, a ceiling surface, with the front side in the light emission direction being the lower side and the back side opposite to the light emission direction being the upper side. As shown in FIGS. 1 to 4, lighting device 10 is configured by reusing fixture body 11, which is the existing fixture body of an existing lighting device installed on the ceiling surface where it will be installed, removing the existing light source unit attached to fixture body 11 and installing light source unit 12, which is a new light source unit. Light source unit 12 has a second terminal block 13 and a first power supply unit 45.

[0011] The fixture body 11 is made of metal and is elongated. The fixture body 11 includes a top plate 20, side plate portions 21 bent from both sides of the top plate 20 in a short direction (also referred to as the width direction) intersecting the longitudinal direction, reflector portions 22 protruding obliquely upward from the lower ends of the side plate portions 21, and end plate portions 23 closing both longitudinal ends, forming a so-called inverted Fuji shape. A concave storage portion 24 opening downward is formed between the top plate 20, the side plate portions 21, and the end plate portions 23. The fixture body 11 is not limited to the inverted Fuji shape, and can also be applied to various types of base lights, such as a trough type without reflector portions 22 and a shaded type having shades protruding obliquely downward from the lower ends of the side plate portions 21.

[0012] A plurality of mounting holes 25 for mounting to two hanging bolts protruding from a ceiling structure are provided on both longitudinal ends of the top plate portion 20. A wiring hole 27 is provided in the longitudinal center of the top plate portion 20 for drawing a power line 26 (which may include an arm line) drawn from the ceiling surface side into the housing portion 24 of the fixture body 11.

[0013] The appliance body 11 includes a first terminal block 28 which is an existing terminal block, and an appliance body side mounting portion 30 which is a pair of existing appliance body side mounting portions, and these are housed in the housing portion 24.

[0014] Next, the light source unit 12 will be described. The light source unit 12 includes a long chassis 40, a light source 41 attached to the lower surface of one side of the chassis 40, a light-transmitting cover 42 attached to the chassis 40 to cover the light source 41, a pair of light source unit-side attachment portions 44 disposed on the upper surface of the other side of the chassis 40, a first power supply portion 45, and a second terminal block 13.

[0015] Next, detailed explanations of each component are shown in FIGS. 2 to 8.

[0016] The first terminal block 28 is fixed by a screw in the direction of one end of the longitudinal direction of the top plate portion 20 relative to the wiring hole 27. When using an existing lighting device, the power line 26 is connected to the first terminal block 28.

[0017] The fixture body side mounting portion 30 includes spring receiving metal fittings 31 attached to the underside of the top plate portion 20 of the fixture body 11 at two locations near both ends in the longitudinal direction.

[0018] The chassis 40 of the light source unit 12 is made of metal and is provided to be long. The chassis 40 has a long light source mounting portion 48 on one side, i.e., the bottom surface, and a second terminal block 13 and a first power supply portion 45 on the other side, i.e., the top surface.

[0019] The light source 41 is configured as a light source module having a plurality of light-emitting elements 43 mounted along the longitudinal direction on the underside of a long light source substrate 46. The light source substrate 46 is attached to the chassis 40 so that the rear side, which is the upper surface side, faces the underside of the chassis 40. The light-emitting elements 43 are semiconductor light-emitting elements such as LEDs (Light Emitting Diodes) and organic EL (Electro Luminescence). The light source 41 is electrically connected to a first power supply unit 45 by electric wires.

[0020] The light-transmitting cover 42 is made of resin, has light-transmitting and light-diffusing properties, and transmits light from the light-emitting element 43. The light-transmitting cover 42 is formed in an elongated shape, and its cross-sectional shape in the width direction is formed in a convex curved shape facing forward.

[0021] The light source unit side mounting portion 44 includes a mounting spring 56, which is mounted on the top surface of the chassis 40 at two locations near both ends in the longitudinal direction by mounting members 57. The mounting spring 56 is, for example, a torsion spring. The mounting spring 56 is engageable with the spring receiving metal fitting 31. The mounting spring 56 is configured to temporarily suspend the light source unit 12 from the fixture body 11 by hooking it onto the spring receiving metal fitting 31 of the fixture body 11 while the mounting spring 56 is pulled up from the chassis 40, and to further push up the light source unit 12, thereby mounting it to the fixture body 11 and maintaining that mounted state.

[0022] The mounting spring 56 is not limited to a torsion spring, and a leaf spring or the like may be used. Also, the fixture body side mounting part 30 may be provided with the mounting spring 56, and the light source unit side mounting part 44 may be provided with the spring receiving metal fitting 31.

[0023] The first power supply unit 45 is attached along the longitudinal direction to the top surface, which is the other side of the chassis 40, and is housed in the housing section 24 of the fixture body 11 when the light source unit 12 is attached to the fixture body 11. As shown in Fig. 5, in a front view seen from the top surface with the light source unit 12 attached to the fixture body 11, the first power supply unit 45 is located so as not to overlap with the first terminal block 28, and is attached toward one end in the longitudinal direction with respect to the wiring hole 27 of the top panel section 20. Note that for the sake of explanation, the wiring hole 27 and the first terminal block 28 are shown by dotted lines in Fig. 5.

[0024] The first power supply unit 45 receives external power from, for example, a commercial AC power supply through the second terminal block 13, converts it into a predetermined lighting power for lighting the light source 41, and supplies it to the light source 41. The second terminal block 13 is electrically connected to the first power supply unit 45 by a harness or the like, and the first power supply unit 45 and the light source 41 are electrically connected by an electric wire for supplying lighting power.

[0025] The first power supply unit 45 includes a power supply board (not shown) on which a plurality of electronic components that constitute a power supply circuit are mounted, and a power supply case 62 that houses this power supply board.

[0026] The power supply case 62 is placed on the top surface of the chassis 40 and attached by screws or the like.

[0027] The second terminal block 13 is attached to the top surface, which is the other side of the chassis 40, and is fixed thereto, for example, by screws. Furthermore, the second terminal block 13 is disposed at a position where, in a front view seen from the top surface, the dimension from the center of the wiring hole 27 in the top panel portion 20 to the outer periphery closest to the wiring hole 27 of the second terminal block 13 is equal to or smaller than the dimension from the center of the wiring hole 27 to the outer periphery closest to the wiring hole 27 of the first terminal block 28, and where it does not overlap with the first terminal block 28. For example, the second terminal block 13 is disposed at a position where it at least partially overlaps with the wiring hole 27. Note that the position of the second terminal block 13 is a position opposite the center of the wiring hole 27 in a front view seen from the top surface, and it is desirable that the second terminal block 13 be disposed directly below the wiring hole 27, as shown in FIGS. 7 and 8.

[0028] Furthermore, the second terminal block 13 may be disposed, for example, at one end of the wiring hole 27, similar to the first power supply unit 45 disposed at one end of the longitudinal direction of the top surface of the chassis 40, and the dimension from the second terminal block 13 to the wiring hole 27 is shorter than the dimension from the first power supply unit 45 to the wiring hole 27. In other words, the second terminal block 13 is disposed at a position closer to the wiring hole 27 than the first power supply unit 45.

[0029] The second terminal block 13 is made of insulating resin and has a rectangular parallelepiped shape. The second terminal block 13 has a connection portion 75, to which the power line 26 is connected, on one side thereof facing the wiring hole 27 of the device body 11. The connection portion 75 has a plurality of wire insertion holes 76, to which wires such as the power line 26 are inserted, on one side thereof, of the second terminal block 13, and a wire connection terminal is disposed inside each of the wire insertion holes 76. The wire connection terminal is electrically connected to the power line 26 inserted into the wire insertion hole 76. A cover made of silicon or the like may be attached to the second terminal block 13 to, for example, prevent dust and other debris from clogging the connection portion 75.

[0030] The multiple wire insertion holes 76 of the second terminal block 13 are provided facing the top plate 20 of the fixture body 11. For example, the power line 26 that is drawn into the fixture body 11 from the outside and a feeder wire that supplies power to other lighting devices 10 are inserted into the wire insertion holes 76. In addition to the two voltage wires of the power line 26, a ground wire that is drawn into the fixture body 11 together with the power line 26 is also connected to the wires inserted into the wire insertion holes 76. In this case, it is desirable that the wire insertion hole 76 to which the ground wire is connected is provided in a position close to the side plate 21. It is desirable that the wire insertion hole 76 be provided facing the wiring hole 27 of the top plate 20 in a front view seen from the top side.

[0031] When the light source unit 12 is attached to the fixture body 11, the second terminal block 13 is positioned so that at least a portion of it overlaps with the wiring hole 27 when viewed from the front from the top side, and is accommodated in the accommodation section 24 between the top plate section 20 of the fixture body 11 and the chassis 40 of the light source unit 12 as shown in Figure 8.

[0032] Next, a method for attaching a new light source unit 12 to the lighting device 10 will be described. Here, it is assumed that the lighting device 10 has an existing light source unit attached. The existing light source unit is attached to the fixture body by a pair of mounting springs and has an existing power supply unit.

[0033] First, the existing light source unit is pulled down from the fixture body 11 installed on the ceiling surface and temporarily suspended by the mounting spring, and the wiring connecting the first terminal block 28 and the existing power supply unit is removed.

[0034] Next, the existing light source unit that has been pulled down is removed from the fixture body 11.

[0035] Next, the power line 26 inserted through the wiring hole 27 connected to the first terminal block 28 of the fixture body 11 is removed.

[0036] Next, the light source unit 12 is moved below the fixture body 11 , and the pair of mounting springs 56 are hooked onto the pair of spring receiving metal fittings 31 , so that the light source unit 12 is temporarily suspended from the fixture body 11 .

[0037] Next, the power supply line 26 that was connected to the first terminal block 28 is inserted into the wire insertion hole 76 of the second terminal block 13 and connected.

[0038] Next, the light source unit 12 is pushed up toward the fixture body 11, and the light source unit 12 is attached to the fixture body 11, thereby completing the attachment work of the light source unit 12.

[0039] By attaching the light source unit 12 to the fixture body 11, the first power supply section 45 is positioned so as not to overlap with the first terminal block 28 when viewed from the front from the top side, and is accommodated in the accommodation section 24 between the top plate section 20 of the fixture body 11 and the chassis 40 of the light source unit 12.

[0040] In addition, the second terminal block 13 is positioned in a position that does not overlap with the first terminal block 28 when viewed from the top and in a front view, and is positioned so that it overlaps at least partially with the wiring hole 27, and is accommodated in the accommodation section 24 between the top plate section 20 of the fixture body 11 and the chassis 40 of the light source unit 12.

[0041] In this way, a new light source unit 12 and a new second terminal block 13 can be attached to an existing fixture body 11 equipped with a terminal block, and the number of work steps required is reduced compared to the work of replacing a conventional terminal block.

[0042] Furthermore, when viewed from the top side, the second terminal block 13 is positioned so that its dimension is less than the dimension from the center of the wiring hole 27 to the outer periphery of the first terminal block 28 closest to the wiring hole 27, and so that it does not overlap with the first terminal block 28.Therefore, even if the power line 26 is cut and shortened when removing the power line 26 that was connected to the first terminal block 28, it can still be connected to the second terminal block 13.

[0043] 6 and 7, the second terminal block 13 has a connection portion 75 facing the top plate portion 20, and at least a portion of the connection portion 75 overlaps with the wiring hole 27 in a front view from the top side, so that the power line 26 can be connected to the second terminal block 13 substantially perpendicularly without being bent. For the sake of explanation, the wiring hole 27 of the fixture body 11 is shown in FIG. 6 by a dotted line.

[0044] In addition, the second terminal block 13 may be arranged on the top surface, which is the other side of the chassis 40, in a direction toward one end of the wiring hole 27, similar to the first power supply unit 45, which is arranged in a direction toward one end of the longitudinal direction relative to the center of the wiring hole 27.In this case, the internal wiring electrically connecting the second terminal block 13 and the first power supply unit 45 can be short, and the wiring inside the fixture body 11 will not become messy.

[0045] In the above-described embodiment, the second terminal block 13 is disposed at a position where it at least partially overlaps the wiring hole 27 of the fixture body 11 in a front view seen from above, and the connection portion 75 to which the power line 26 is connected is provided on one side surface of the fixture body 11 facing the wiring hole 27. However, the present invention is not limited to this, and the second terminal block 13 may be disposed at a position where it does not overlap the wiring hole 27, for example, as long as the dimension from the center of the wiring hole 27 to the outer periphery closest to the wiring hole 27 of the second terminal block 13 is equal to or smaller than the dimension from the center of the wiring hole 27 to the outer periphery closest to the wiring hole 27 of the first terminal block 28. Furthermore, the connection portion 75 of the second terminal block 13 may be provided in the same direction as the longitudinal direction of the chassis 40.

[0046] Furthermore, in the above-described embodiment, the second terminal block 13 and the first terminal block 28 do not overlap in a front view seen from above, but this is not limiting, and the second terminal block 13 and the first terminal block 28 may overlap as long as the dimension from the wiring hole 27 to the second terminal block 13 is equal to or smaller than the dimension from the wiring hole 27 to the first terminal block 28. For example, by reducing the thickness of the first terminal block 28 or the second terminal block 13, they can be accommodated in the accommodation section 24 of the device main body 11 even in an overlapping state. This allows the first terminal block 28 and the second terminal block 13 to be efficiently accommodated in the limited space of the accommodation section 24 of the device main body 11.

[0047] Furthermore, although a configuration in which an existing first terminal block 28 is attached to an existing fixture body 11 has been described, it is not limited to this, and it is also possible to attach the light source unit 12 to an existing fixture body 11 that does not have a first terminal block 28.

[0048] Next, a second embodiment is shown in Figures 9 to 14. Figures 11 and 12 are cross-sectional views of the lighting device 10 cut in the longitudinal direction, similar to the line AA in Figure 1 showing the first embodiment.

[0049] The lighting device 10 of the second embodiment is similar to the lighting device 10 of the first embodiment except for some differences in the configuration of the fixture body 11 and the light source unit 12. Therefore, the same components as those of the first embodiment are denoted by the same reference numerals and will not be described again.

[0050] The fixture body 11 includes a first terminal block 28 which is an existing terminal block, a second power supply unit 29 which is an existing power supply unit, and a pair of existing fixture body side mounting units 30 which are fixture body side mounting units, and these are accommodated in the accommodation unit 24.

[0051] In a front view seen from the top side, the second power supply unit 29 is on the opposite side of the wiring hole 27 from the first terminal block 28, and is fixed by screws to the other end in the longitudinal direction of the top plate 20. The second power supply unit 29 is electrically connected to the first terminal block 28 by a harness or the like.

[0052] The light source unit 12 comprises a long chassis 40, a light source 41 attached to the underside of one side of the chassis 40, a translucent cover 42 attached to the chassis 40 to cover the light source 41, a pair of light source unit side attachment portions 44 arranged on the top side of the other side of the chassis 40, a first power supply portion 45, a terminal block receiving portion 82, and a second terminal block 13.

[0053] The second terminal block 13 is attached to the top surface, which is the other side of the chassis 40, and is detachably arranged, for example, by a terminal block receptacle 82 or the like. After the second terminal block 13 and the power line 26 are connected, the light source unit 12 is temporarily suspended from the fixture body 11, and the second terminal block 13 is connected to the terminal block receptacle 82 in the temporarily suspended state. Also, as shown in Fig. 10, the second terminal block 13 is arranged in a position that does not overlap with the wiring hole 27 in a front view seen from the top side. For the sake of explanation, Fig. 10 shows the wiring hole 27 of the fixture body 11, the first terminal block 28, and the second power supply unit 29 with dotted lines.

[0054] 10, the second terminal block 13 is disposed between the first terminal block 28 disposed toward one end of the top plate 20 in the longitudinal direction and the second power supply unit 29 disposed at the other end of the top plate 20 in a front view seen from above, and is disposed, for example, in an area that is equal to or smaller than the dimension from the outer casing of the first terminal block 28 closest to the second power supply unit 29 to the outer casing of the second power supply unit 29 closest to the first terminal block 28. For the sake of explanation, the wiring hole 27 of the fixture body 11, the first terminal block 28, and the second power supply unit 29 are shown by dotted lines in FIG.

[0055] 13, the terminal block receiving portion 82 is attached to the upper surface, which is the other surface side, of the chassis 40. For example, the terminal block receiving portion 82 is connected to the first power supply unit 45 by a harness or the like. The second terminal block 13, to which the power line 26 is connected, is moved from the upper side to the lower side and attached to the terminal block receiving portion 82, thereby electrically connecting the second terminal block 13 and the terminal block receiving portion 82. The terminal block receiving portion 82 and the second terminal block 13 may be fixed by engaging with each other with a claw or the like, or may be fixed by fitting the second terminal block 13 into the terminal block receiving portion 82.

[0056] By attaching the light source unit 12 to the fixture body 11, the first power supply section 45 and the second terminal block 13 are positioned so as not to overlap with the first terminal block 28 and the second power supply section 29 when viewed from the front from the top side, and are accommodated in the accommodation section 24 between the top plate section 20 of the fixture body 11 and the chassis 40 of the light source unit 12.

[0057] In this way, in the lighting device 10 of the second embodiment, a light source unit 12 equipped with a new second terminal block 13 and a new first power supply unit 45 can be attached to an existing fixture body 11 equipped with a first terminal block 28 and a second power supply unit 29, thereby eliminating the need to replace the existing fixture body 11.

[0058] Furthermore, the second terminal block 13 is positioned so as not to overlap with the wiring hole 27 when viewed from the top side, so that the wiring tendencies of the power line 26 connected to the existing first terminal block 28 can be utilized as is to connect it to the second terminal block 13, making wiring work easier.

[0059] Furthermore, in the second embodiment described above, the second terminal block 13 is arranged on one end side of the longitudinal direction of the top surface of the chassis 40 relative to the wiring hole 27, similar to the first power supply unit 45, but this is not limited to this, and for example, the second terminal block 13 may be arranged on the other end side of the longitudinal direction of the top surface of the chassis 40 relative to the wiring hole 27.

[0060] Furthermore, since the second terminal block 13 and the first power supply unit 45 are positioned so as not to overlap with the first terminal block 28 and the second power supply unit 29, the second terminal block 13, the first terminal block 28, the first power supply unit 45, and the second power supply unit 29 can be efficiently accommodated within the limited space of the accommodation unit 24 of the device body 11.

[0061] Furthermore, since the second terminal block 13 is detachable from the terminal block receiving portion 82, the wiring work when replacing the light source unit 12 is easier than in the past.

[0062] Furthermore, in the first and second embodiments described above, the dimension from the second terminal block 13 to the wiring hole 27 is shorter than the dimension from the first terminal block 28 to the wiring hole 27 in a front view seen from above, and the first terminal block 28 and the second terminal block 13 are disposed at positions where they do not overlap. However, the present invention is not limited to this, and it is sufficient that the dimension from the second terminal block 13 to the wiring hole 27 is equal to or smaller than the dimension from the first terminal block 28 to the wiring hole 27. For example, the second terminal block 13 may be disposed at a position where the dimension from the second terminal block 13 to the wiring hole 27 is substantially the same as the dimension from the first terminal block 28 to the wiring hole 27, as long as the first terminal block 28 and the second terminal block 13 do not overlap in a front view seen from above. For example, as shown in FIG. 14 , in a front view from the top side, the dimension from a center line 100 perpendicular to the short-side direction of the chassis 40 through the center of the wiring hole 27 to the outer periphery closest to the center line 100 of the second terminal block 13 is approximately the same as the dimension from the center line 100 to the outer periphery closest to the center line 100 of the wiring hole 27 of the first terminal block 28, and the first terminal block 28 and the second terminal block 13 may be disposed in positions where they do not overlap. Note that "approximately the same" includes a range of ±5 mm. Furthermore, the terminal block receiving portion 82 described in the second embodiment may be disposed in a position where at least a portion overlaps the wiring hole 27. Note that for the sake of explanation, FIG. 14 shows the first terminal block 28, the wiring hole 27, and the second power supply unit 29 with dotted lines.

[0063] Furthermore, in the first and second embodiments described above, the light source unit 12 is attached to the fixture body 11, but this is not limited to this. For example, it is possible to attach a light source unit with a light color different from that of the existing light source unit, or a new light source unit equipped with a sensor or camera, etc.

[0064] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0065] 10. Lighting equipment 11. Instrument body 12 Light source unit 13 2nd terminal block 20 Top plate 21 Side plate part 24 Storage section 26 Power line 27 Wiring hole 28 1st terminal block 29 2nd power supply section 40 chassis 41 Light source 42 Translucent cover 45 1st power supply section 75 Connection

Claims

1. A light source unit attached to a fixture body, the light source unit having a long top plate portion, a wiring hole provided in the top plate portion, and a first terminal block arranged toward one end side of the top plate portion in the longitudinal direction with respect to the wiring hole, The device has a long chassis, a light source arranged on one side of the chassis, a second terminal block arranged on the other side of the chassis and to which an electric wire from outside is connected, and a first power supply unit electrically connected to the second terminal block and converting power supplied from the second terminal block and supplying the power to the light source, wherein, in a front view seen from the other side, the dimension from the center of the wiring hole to the second terminal block is equal to or smaller than the dimension from the center of the wiring hole to the first terminal block. A light source unit characterized by:

2. the first power supply unit is disposed in a direction toward the one end side in the longitudinal direction with respect to the center of the wiring hole, The second terminal block is disposed on the first power supply unit side with respect to the center of the wiring hole, and at a position where the dimension between the wiring hole and the second terminal block is shorter than the dimension between the first power supply unit and the center of the wiring hole.

2. The light source unit according to claim 1.

3. The second terminal block has a connection portion to which the electric wire is connected, facing the top plate portion, and at least a portion of the connection portion overlaps with the wiring hole in the front view.

2. The light source unit according to claim 1.

4. The device body has a second power supply unit arranged on the other end side in the longitudinal direction, In the light source unit, the second terminal block is disposed between the first terminal block and the second power supply unit, and the first power supply unit is disposed toward the one end side of the first terminal block in the front view.

2. The light source unit according to claim 1.

5. an apparatus main body having a long top plate portion, a wiring hole provided in the top plate portion, and a first terminal block arranged toward one end side of the top plate portion in the longitudinal direction with respect to the wiring hole; a light source unit attached to the fixture body, the light source unit having a long chassis, a light source arranged on one surface of the chassis, a second terminal block arranged on the other surface of the chassis and to which an electric wire from outside is connected, and a first power supply unit electrically connected to the second terminal block and converting power supplied from the second terminal block and supplying the converted power to the light source, wherein, in a front view seen from the other surface side, a dimension from the center of the wiring hole to the second terminal block is equal to or smaller than a dimension from the center of the wiring hole to the first terminal block; A lighting device comprising:

Images