Lighting fixtures

Abstract

The objective of this disclosure is to easily secure workspace for operating the release mechanism. [Solution] The lighting fixture comprises an LED module, a power supply unit 30 for lighting the LED module, a power terminal block 32 for electrically connecting external wires to the power supply unit 30, and a case 31 for housing the power supply unit 30 and the power terminal block 32. The case 31 has an opening 314 that exposes at least a part of the power terminal block 32. The power terminal block 32 has a housing 320 having one or more insertion holes 324 into which power wires are inserted through the opening 314, and one or more operating parts 325 provided on the housing 320 that allow the power wires to be pulled out from the insertion holes 324 when operated through the opening 314.

Description

Technical Field

[0001] The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture attached to a suspended ceiling system.

Background Art

[0002] As a conventional example, the lighting fixture described in Patent Document 1 is exemplified. The lighting fixture described in Patent Document 1 (hereinafter referred to as the conventional example) includes two lamp units, a light source unit attached to each of the two lamp units, two connectors for connecting the two lamp units, and engaging members attached to the two connectors and engaging with a T-bar provided on the ceiling. Further, the conventional example also includes a decorative cover attached to the two lamp units, a power supply unit attached to one of the two lamp units, a power terminal block attached to one of the two connectors, and a dimming signal terminal block attached adjacent to the power terminal block.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the terminal blocks (power terminal block and dimming signal terminal block) have a release button (operation part) for removing the connected electric wires (power supply wire or signal wire). Such a release button is generally operated using a tool such as a screwdriver, so a working space for using the tool is required.

[0005] An object of the present disclosure is to provide a lighting fixture that can easily secure a working space for operating an operation part for release.

Means for Solving the Problems

[0006] A lighting fixture according to one aspect of the present disclosure comprises a light source, a power supply device for illuminating the light source, one or more terminal blocks for electrically connecting external wires to the power supply device, and a case for housing the power supply device and the terminal blocks. The case has an opening that exposes at least a portion of the terminal blocks. The terminal blocks have a housing having one or more insertion holes through the opening into which the wires are inserted, and one or more operating parts provided on the housing that, when operated through the opening, allow the wires to be pulled out from the insertion holes. [Effects of the Invention]

[0007] The lighting fixtures disclosed herein have the effect of easily providing workspace for operating the release mechanism. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view of a lighting fixture according to the embodiment of this disclosure, installed on a system ceiling. [Figure 2] Figure 2 is an exploded perspective view of the same lighting fixture. [Figure 3] Figure 3 is a bottom view of the same lighting fixture with the panel omitted. [Figure 4] Figure 4 is a top view of the same lighting fixture. [Figure 5] Figure 5 is a side view of the same lighting fixture as seen from the short side. [Figure 6] Figure 6 is a side view of the same lighting fixture as seen from the longitudinal direction. [Figure 7] Figure 7 is a cross-sectional view of the same lighting fixture, taken from the longitudinal direction. [Figure 8] Figure 8 is a bottom view of the power supply block in the same lighting fixture. [Figure 9] Figure 9 is a side view of the power supply block in the same lighting fixture, viewed from the short side. [Figure 10] Figure 10 is a side view of the power supply block in the same lighting fixture, viewed from the longitudinal direction. [Modes for carrying out the invention]

[0009] Hereinafter, 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.

[0010] (1) Overview The lighting fixture B1 according to this embodiment includes a light source (LED module 20), a power supply unit 30 for lighting the LED module 20, one or more terminal blocks (power terminal blocks 32) for electrically connecting external wires to the power supply unit 30, and a case 31 for housing the power supply unit 30 and the terminal blocks (see Figures 2 and 3).

[0011] The case 31 has an opening 314 that exposes at least a portion of the power terminal block 32 (see Figure 10). The power terminal block 32 has a housing 320 having one or more insertion holes 324 into which electric wires are inserted through the opening 314, and one or more operating parts 325 provided on the housing 320 that allow the electric wires to be pulled out from the insertion holes 324 when operated through the opening 314.

[0012] However, in the embodiment of the lighting fixture B1, since the operating section 325 of the terminal block (power terminal block 32) can be operated through the opening 314 of the case 31, a workspace for operating the release operating section can be easily secured.

[0013] (2) Details The lighting fixture B1 according to the embodiment (hereinafter abbreviated as the lighting fixture B1) is attached to a plurality of T-bars 9 constituting a suspended ceiling (see FIG. 1). The suspended ceiling is configured by combining a plurality of T-bars 9 in a grid pattern. The plurality of T-bars 9 are joined to each of the plurality of suspension bolts embedded in the ceiling slab of the building by a plurality of T-hangers attached to each suspension bolt. By combining the plurality of T-bars 9 in a grid pattern, a plurality of substantially square openings (hereinafter referred to as ceiling openings S1) having a side length equal to the interval between adjacent T-bars 9 are provided side by side in a grid pattern (see FIG. 1).

[0014] Thus, the lighting fixture B1 is supported by a plurality of T-bars 9 and installed in one ceiling opening S1 (see FIG. 1). In addition, equipment other than lighting fixtures, such as the air conditioner outlet, is installed in the portion of the ceiling opening S1 excluding the lighting fixture B1 where the lighting fixture B1 is installed and in the ceiling opening S1 where the lighting fixture B is not installed. Further, a ceiling panel formed in a square or rectangular flat plate shape is installed in the ceiling opening S1 where neither the lighting fixture B1 nor the equipment is installed.

[0015] The lighting fixture B1 includes a light source unit A1, a fixture body 1 that holds the light source unit A1, and two attachment members 4 for attaching the light source unit A1 to the fixture body 1 (see FIG. 2). However, the number of attachment members 4 is not limited to two, and may be one or three or more.

[0016] (2-1) Fixture body The fixture body 1 is formed in a long box shape with an open bottom surface. The fixture body 1 has four side plates and two top plates 10 (see FIG. 2). Note that all of the four side plates and the two top plates 10 are made of metal plates.

[0017] The four side plates include a first side plate 11 and a second side plate 12 that face each other along the short side direction of the appliance body 1, and a third side plate 13 and a fourth side plate 14 that face each other along the long side direction of the appliance body 1. The third side plate 13 connects the longitudinal ends of the first side plate 11 and the second side plate 12 to each other. The fourth side plate 14 connects the other longitudinal ends of the first side plate 11 and the second side plate 12 to each other. That is, the appliance body 1 is formed in a rectangular frame shape by the four side plates.

[0018] The two top plates 10 are formed in a rectangular flat plate shape. The longitudinal dimension of each top plate 10 is substantially the same as the longitudinal dimension of the first side plate 11 and the second side plate 12. Also, the short side dimension of each top plate 10 is shorter than half of the longitudinal dimension of the third side plate 13 and the fourth side plate 14 (see Fig. 4). One top plate 10 protrudes from the upper end of the first side plate 11 toward the second side plate 12, and the other top plate 10 protrudes from the upper end of the second side plate 12 toward the first side plate 11. That is, a rectangular opening portion 100 surrounded by the two top plates 10 is formed on the upper surface (bottom surface) of the appliance body 1 (see Figs. 2 and 4).

[0019] A window 17 is provided at the center in the longitudinal direction of the third side plate 13 (see Fig. 2). The window 17 is formed in a rectangular shape with its upper end opened by cutting out the third side plate 13.

[0020] One engaging portion 15 is attached to each of the third side plate 13 and the fourth side plate 14 (see Figs. 2 and 5). The engaging portion 15 is formed in an inverted L shape. The engaging portion 15 protrudes outside the appliance body 1 along the thickness direction of the third side plate 13 and the fourth side plate 14.

[0021] (2-2) Light source unit The light source unit A1 includes a light source block 2 and a power supply block 3 (see Fig. 2). The two mounting members 4 are fixed to the case 31 of the power supply block 3 as will be described later.

[0022] (2-2-1) Light source block The light source block 2 includes an LED module 20, a box 21, and a panel 22 (see Figures 2 and 3).

[0023] The LED module 20 comprises multiple LEDs 200, a rectangular substrate 201, and a connector 202 (see Figure 3). The multiple LEDs 200 are packaged white LEDs for illumination. The substrate 201 is formed in a long rectangular shape. Multiple LEDs 200 are mounted on the surface of the substrate 201 at equal intervals in a single row. Printed wiring for electrically connecting the multiple LEDs 200 is formed on the surface of the substrate 201. The connector 202 is mounted on one end of the substrate 201 in the longitudinal direction. The connector 202 is electrically connected to the multiple LEDs 200 via the printed wiring on the substrate 201.

[0024] The box body 21 is formed from metal plates into a rectangular box shape with an open bottom. The LED module 20 is attached to the bottom surface of the box body 21 (see Figures 3 and 7).

[0025] Panel 22 is formed in the shape of a rectangular flat plate from a translucent synthetic resin material such as acrylic resin or polycarbonate resin (see Figures 2 and 7). Panel 22 is attached to the box 21 so as to cover the opening on the bottom surface of the box 21 (see Figure 7). In other words, the illumination light emitted from the LED module 20 passes through panel 22 and is projected outside the box 21.

[0026] (2-2-2) Power Block The power supply block 3 includes a power supply unit 30, a case 31, a power terminal block 32, a signal terminal block 33, etc. (see Figure 8).

[0027] The power supply unit 30 is constructed by housing a printed circuit board 300 that forms the power supply circuit in a metal power supply case 301. The power supply circuit is configured to convert AC power supplied from an external power source (commercial power grid) via a power terminal block 32 into DC power, and to supply the converted DC power (DC current) to the LED module 20 via a connector 202. The power supply circuit is also configured to increase or decrease the DC current supplied to the LED module 20 in response to a dimming signal input from the outside via a signal terminal block 33.

[0028] The power terminal block 32 has a housing 320 having three pairs of insertion holes 324 into which power lines can be inserted, and three operating parts 325 provided on the housing 320, one-to-one corresponding to the three pairs of insertion holes 324 (see Figure 10).

[0029] The housing 320 is formed in a box shape, having a first side surface 321 with three pairs of insertion holes 324 and a second side surface 322 with three operating parts 325. The housing 320 is made of an electrically insulating synthetic resin material.

[0030] The housing 320 houses three sets of conductive blocks. Each of these three sets of conductive blocks has a pair of primary terminals and a pair of secondary terminals. Both the primary terminals and the secondary terminals are quick-connect terminals (screwless terminals). Furthermore, the primary terminals and the secondary terminals are integrally formed from a metal plate. The three sets of conductive blocks are housed in the housing 320 while being electrically insulated from each other.

[0031] Each pair of conductive blocks is configured to electrically and mechanically connect power lines inserted through the insertion holes 324 of the housing 320 to the primary terminals. Furthermore, each pair of conductive blocks is configured to electrically and mechanically connect wires inserted through insertion holes (not shown) on the side of the housing 320 opposite the first side surface 321 to the secondary terminals. The wires electrically and mechanically connected to the secondary terminals are electrically connected to the power circuit of the power supply unit 30, forming a power supply path for inputting AC power supplied from an external power source into the power circuit.

[0032] The three operating parts 325 are positioned one-to-one with three sets of conductive blocks on the second side surface 322 of the housing 320, and are configured to be movable perpendicular (normal) to the second side surface 322. When each operating part 325 is pressed using a tool such as a screwdriver, it moves in the direction of entering the housing 320 from the second side surface 322, and can move the pair of primary terminals on the corresponding set of conductive blocks to a released state. The released state means that the primary terminals (quick-connect terminals) are not electrically and mechanically connected to the power line, and the power line can be pulled out from the insertion hole 324.

[0033] The signal terminal block 33 has a housing 330, each having two pairs of insertion holes 334 into which signal wires can be inserted, and two operating sections 335 provided on the housing 330, corresponding one-to-one to the two pairs of insertion holes 334 (see Figure 10).

[0034] The housing 330 is formed in a box shape, having a first side surface 331 with two pairs of insertion holes 334 and a second side surface 332 with two operating parts 335. The housing 330 is made of an electrically insulating synthetic resin material.

[0035] The housing 330 houses three sets of conductive blocks. Each of these two sets of conductive blocks has a pair of primary terminals and a pair of secondary terminals. Both the primary terminals and the secondary terminals are quick-connect terminals (screwless terminals). Furthermore, the primary terminals and the secondary terminals are integrally formed from a metal plate. The two sets of conductive blocks are housed in the housing 330 while being electrically insulated from each other.

[0036] Each pair of conductive blocks is configured to electrically and mechanically connect signal wires inserted through insertion holes 334 in the housing 330 to the primary terminals. Furthermore, each pair of conductive blocks is configured to electrically and mechanically connect wires inserted through insertion holes (not shown) on the side of the housing 330 opposite the first side surface 331 to the secondary terminals. The wires electrically and mechanically connected to the secondary terminals are electrically connected to the power supply circuit of the power supply unit 30 and serve as a signal path for inputting dimming signals from an external source into the power supply circuit.

[0037] The two operating sections 335 are formed in the shape of rectangular plates. The two operating sections 335 are supported at one end in the longitudinal direction on the second side surface 332 of the housing 330. The two operating sections 335 face two pairs of conductive blocks one-to-one on the second side surface 332 of the housing 330. When each operating section 335 is pressed, for example with a finger, it rotates in a direction that enters the housing 330 from the second side surface 332, and can move a pair of quick-connect terminals on the corresponding pair of conductive blocks to a disengaged state. The disengaged state is a state in which the quick-connect terminals are not electrically and mechanically connected to the signal wires, and the signal wires can be pulled out from the insertion holes 334.

[0038] The case 31 has a rectangular bottom wall 310, a pair of first side walls 311 projecting downwards in the thickness direction of the bottom wall 310 from both ends along the longitudinal direction of the bottom wall 310, and a second side wall 312 that closes one end of the bottom wall 310 and the pair of first side walls 311 in the longitudinal direction (see Figures 8 and 9). An opening 314 is provided at the other end of the case 31 in the longitudinal direction (see Figures 8 and 10). The bottom wall 310 and the pair of first side walls 311 are integrally formed from a metal plate. The power supply unit 30 is fixed to the inner bottom surface of the case 31 (the lower surface of the bottom wall 310) by screws (see Figure 8).

[0039] The power terminal block 32 and the signal terminal block 33 are located at one end of the case 31 in the longitudinal direction (the end with the opening 314) (see Figure 8). Each of the pair of first side walls 311 has a rectangular hole 313 at the upper end portion of both ends in the longitudinal direction (see Figure 9).

[0040] The power terminal block 32 is attached to the case 31 via a base 34 (see Figure 8). The base 34 has a projection piece 340 that protrudes from one end in the longitudinal direction of one of the first side walls 311 (the upper first side wall 311 in Figure 8), and a support piece 341 that has one end fixed to the projection piece 340 and the other end fixed to the bottom wall 310 to support the power terminal block 32 (see Figures 8 and 9). The support piece 341 is inclined at an angle of approximately 45 degrees with respect to the projection piece 340 (first side wall 311) (see Figure 8). However, the inclination angle of the support piece 341 is not limited to 45 degrees. The power terminal block 32 is attached to the support piece 341 such that the first side surface 321, which has the insertion holes 324, faces outwards from the case 31 (see Figure 10).

[0041] The signal terminal block 33 is attached to the other first side wall 311 (the right first side wall 311 in Figure 10) such that its first side surface 331 faces the opening 314 and its second side surface 332 faces the second side surface 322 of the power terminal block 32 (see Figures 8 and 10).

[0042] The case 31 of the power supply block 3 is screwed to the top surface of the box 21 of the light source block 2. In other words, the opening on the bottom of the case 31 is closed by the bottom plate of the box 21 (see Figure 7).

[0043] (2-2-3) Mounting components The two mounting members 4 have the same configuration. Each mounting member 4 has a fixing portion 40, a pair of resting portions 41, and a pair of bending portions 42 (see Figures 4 and 7). The fixing portion 40 is formed in a roughly U-shape when viewed from the longitudinal direction. The fixing portion 40 is provided with two screw insertion holes.

[0044] The pair of bent portions 42 are formed in an L-shape when viewed from the short side of the fixing portion 40 (see Figure 7). The pair of bent portions 42 protrude one from each end in the longitudinal direction of the fixing portion 40. The pair of mounting portions 41 are formed in the shape of a rectangular flat plate. The pair of mounting portions 41 protrude one from each end of the pair of bent portions 42. A screw hole 410 is provided at each end of the pair of mounting portions 41 (see Figure 2). The pair of bent portions 42 and the pair of mounting portions 41 are integrally formed by punching and bending a metal plate. However, the mounting member 4 is not limited to metal, and may be made of synthetic resin, for example.

[0045] The mounting member 4 is attached to the case 31 such that the fixing portion 40 is housed in the case 31 and the pair of resting portions 41 protrude outside the case 31. That is, the mounting member 4 is attached to the case 31 by screwing the fixing portion 40 to the bottom wall 310 of the case 31, with the longitudinal ends of the resting portion 41 and the fixing portion 40 protruding one by one from holes 313 provided in the pair of first side walls 311 of the case 31 (see Figures 4 and 8-10).

[0046] (2-2-4) Installation procedure for lighting fixtures Next, we will explain the installation procedure for lighting fixture B1.

[0047] The worker performing the installation work (hereinafter referred to as "worker") attaches the fixture body 1 to the two T-bars 9 surrounding the ceiling opening S1 of the system ceiling by hooking one hook portion 15 onto each T-bar 9.

[0048] Next, the worker moves the light source unit A1 closer to one of the top plates 10, inserts the mounting portions 41 of the pair of mounting members 4 into the opening 100 of the fixture body 1 from below, and then slides the light source unit A1 closer to the other top plate 10. Then, the worker places the pair of mounting portions 41 onto the pair of top plates 10 one by one.

[0049] Next, the worker inserts one fixing screw 45 into each screw insertion hole provided at both ends in the longitudinal direction of each top plate 10, and screws each fixing screw 45 into the screw hole 410 of the mounting portion 41 (see Figures 2 and 3). In other words, the worker fastens each pair of mounting portions 41 to the corresponding top plate 10 of the pair of top plates 10 with the fixing screws 45, thereby fixing the light source unit A1 to the fixture body 1 (see Figure 7). When the light source unit A1 is fixed to the fixture body 1, the power terminal block 32 and signal terminal block 33 of the light source unit A1 are exposed to the outside of the fixture body 1 through the window 17 provided in the third side plate 13 (see Figure 6).

[0050] Finally, the worker electrically connects the power line to the power terminal block 32 from another ceiling opening S1 adjacent to the ceiling opening S1 where the lighting fixture B1 is installed, and electrically connects the signal line to the signal terminal block 33.

[0051] The installation of lighting fixture B1 is completed following the steps described above.

[0052] (2-3) Advantages of the Embodiment After the lighting fixture B1 has been installed in the system ceiling as described above, if the ceiling opening S1 to be installed is changed, or if the mounting orientation to the ceiling opening S1 is changed, it is necessary to disconnect the power wires from the power terminal block 32 and the signal wires from the signal terminal block 33.

[0053] In the conventional example described in Patent Document 1, the release button (operating part) for disconnecting the connected wires (power lines or signal lines) is positioned facing upwards. Therefore, if the distance from the ceiling panel of the system ceiling to the building structure is short, it may be difficult to secure sufficient space to operate the release button.

[0054] In contrast, the lighting fixture B1 exposes its second side surface 322, which is provided with multiple operating parts 325, through an opening 314 provided at the longitudinal end of the case 31 (see Figures 6 and 10). Therefore, since the operating parts 325 of the lighting fixture B1 can be operated through the opening 314, it is easy to secure a workspace for operating the release operating part 325.

[0055] Furthermore, the lighting fixture B1 houses the power terminal block 32 in the case 31 such that the first side surface 321, which has multiple insertion holes 324, and the second side surface 322, which has multiple operating parts 325, face the opening 314 (see Figure 10).

[0056] Therefore, the lighting fixture B1 can secure workspace for operating the control unit 325 without reducing the ease of inserting power lines into the multiple insertion holes 324.

[0057] Incidentally, the lighting fixture B1 has an opening 314 that exposes the third side 323 adjacent to the first side 321 and second side 322 of the housing 320 (see Figure 4). That is, the lighting fixture B1 exposes the third side 323 of the housing 320 of the power terminal block 32 by diagonally cutting out the bottom wall 310 surrounding the opening 314 of the case 31.

[0058] However, by exposing the third side surface 323 of the housing 320 of the power terminal block 32 in the lighting fixture B1, the visibility of the multiple insertion holes 324 and the multiple operating parts 325 is improved. As a result, the lighting fixture B1 can improve the workability of connecting power lines to the power terminal block 32 and operating the operating parts 325.

[0059] Furthermore, the lighting fixture B1 is equipped with multiple terminal blocks, each including a first terminal block (power terminal block 32) electrically connected to an external power line and a second terminal block (signal terminal block 33) electrically connected to an external signal line. Therefore, with lighting fixture B1, the work of electrically connecting the power line to the power terminal block 32 and the work of electrically connecting the signal line to the signal terminal block 33 can be performed simultaneously through the opening 314 of the case 31. Thus, lighting fixture B1 can improve the work efficiency of electrically connecting wires to multiple terminal blocks.

[0060] Furthermore, the lighting fixture B1 houses the power terminal block 32 and the signal terminal block 33 in the case 31 such that the multiple insertion holes 324 arranged in a row on the first side surface 321 of the housing 320 and the multiple insertion holes 334 arranged in a row on the first side surface 331 of the housing 330 are parallel to each other (see Figures 6 and 10).

[0061] However, compared to the conventional example where multiple insertion holes on each of the two terminal blocks are arranged in a single row, the lighting fixture B1 allows for a reduction in the size of the case 31.

[0062] Furthermore, the lighting fixture B1 has a support piece 341 for attaching the power terminal block 32 inclined with respect to the protruding piece 340 (first side wall 311). As a result, the lighting fixture B1 houses the power terminal block 32 and the signal terminal block 33 in the case 31 such that the insertion directions of the multiple insertion holes 324 of the power terminal block 32 and the insertion directions of the multiple insertion holes 334 of the signal terminal block 33 intersect (see Figures 6 and 10).

[0063] Therefore, compared to the case where the insertion direction of the power terminal block 32 and the insertion direction of the signal terminal block 33 are not intersected, the lighting fixture B1 can improve the workability when inserting wires (power wires and signal wires) into the insertion holes 324 and 334 of each terminal block.

[0064] Furthermore, the lighting fixture B1 houses the power terminal block 32 and the signal terminal block 33 in the case 31 such that the second side surface 322 of the housing 320, on which the operating unit 325 is located, and the second side surface 332 of the housing 330, on which the operating unit 335 is located, face each other (see Figures 6 and 10).

[0065] However, since the lighting fixture B1 can share the space for operating the control unit 325 of the power terminal block 32 with the space for operating the control unit 335 of the signal terminal block 33, the case 31 can be made smaller compared to when the spaces are not shared.

[0066] Furthermore, since the lighting fixture B1 has one or more hooking parts 15 on the fixture body 1 that can be hooked onto the T-bar 9 that constitutes the system ceiling, the fixture body 1 can be easily attached to the T-bar 9.

[0067] (2-4) Modified examples of lighting fixtures according to the embodiment Next, a modified example of the lighting fixture B1 according to the embodiment will be described. However, the basic configuration of the modified lighting fixture B1 described below is the same as the basic configuration of the lighting fixture B1 according to the embodiment. Therefore, components that are common to or substantially common with the basic configuration of the 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.

[0068] External power and signal wires are electrically and mechanically connected to the power terminal block 32 or signal terminal block 33 through the window 17 of the third side plate 13 of the fixture body 1 and the opening 314 of the case 31. Since both the fixture body 1 and the case 31 are formed by processing metal plates, there is a possibility that the insulation of the power and signal wires may be damaged by burrs remaining on the edges of the window 17 of the third side plate 13 and the edges of the opening 314 of the case 31.

[0069] Therefore, in the modified lighting fixture B1, the edge of the opening 314 in the case 31 is formed into a curved shape. Specifically, in the modified case 31, it is preferable to form the edge of the opening 314 into a curved shape by bending it.

[0070] Furthermore, in the modified lighting fixture B1, the edge of the window 17 on the third side plate 13 of the fixture body 1 is formed into a curved shape. Specifically, in the modified lighting fixture 1, it is preferable that the edge of the window 17 on the third side plate 13 is formed into a curved shape by bending the plate.

[0071] However, in the modified lighting fixture B1, the edges of the opening 314 in the case 31 and / or the edges of the window 17 in the third side plate 13 of the fixture body 1 are formed in a curved shape, thereby preventing damage to the insulation of the power lines and / or signal lines.

[0072] (3) Summary A lighting fixture (B1) according to a first aspect of the present disclosure comprises a light source (LED module 20), a power supply device (30) for lighting the light source, one or more terminal blocks (power terminal blocks 32) for electrically connecting external wires to the power supply device (30), and a case (31) housing the power supply device (30) and the terminal blocks. The case (31) has an opening (314) that exposes at least a portion of the terminal blocks. The terminal blocks have a housing (320) having one or more insertion holes (324) through the opening (314) into which wires are inserted, and one or more operating parts (325) provided on the housing (320) that allow the wires to be pulled out from the insertion holes (324) when operated through the opening (314).

[0073] In the first embodiment of the lighting fixture (B1), multiple operating parts (325) are exposed through an opening (314) in the case (31), and the operating parts (325) can be operated through the opening (314), so that a workspace for operating the release operating part (325) can be easily secured.

[0074] A lighting fixture (B1) according to a second aspect of the present disclosure can be realized by combining it with the first aspect. In the lighting fixture (B1) according to the second aspect, the housing (320) is preferably formed in a box shape having a first side surface (321) provided with a plurality of insertion holes (324) and a second side surface (322) provided with a plurality of operating parts (325). The terminal block is preferably housed in a case (31) such that the first side surface (321) and the second side surface (322) face the opening (314).

[0075] The lighting fixture (B1) according to the second embodiment can secure workspace for operating the control unit (325) without reducing the workability for inserting wires into the multiple insertion holes (324).

[0076] A lighting fixture (B1) according to a third aspect of this disclosure can be realized by combining it with the second aspect. In the lighting fixture (B1) according to the third aspect, the opening (314) is preferably formed to expose a third side (323) adjacent to the first side (321) and second side (322) of the housing (320).

[0077] The lighting fixture (B1) according to the third embodiment exposes the third side surface (323) of the terminal block housing (320), thereby improving the visibility of the multiple insertion holes (324) and multiple connection parts (325), and as a result, the workability of connecting wires to the terminal block and operating the operation part (325) can be improved.

[0078] A lighting fixture (B1) according to a fourth aspect of this disclosure can be realized by combining it with any of the first to third aspects. In the lighting fixture (B1) according to the fourth aspect, it is preferable that the edge of the opening (314) in the case (31) is formed in a curved shape.

[0079] The lighting fixture (B1) according to the fourth embodiment can prevent damage to the insulation of the electric wires at the edge of the opening (314) in the case (31).

[0080] A lighting fixture (B1) according to a fifth aspect of this disclosure can be realized by combination with any of the first to fourth aspects. The lighting fixture (B1) according to the fifth aspect preferably comprises a light source unit (A1) and a fixture body (1) that holds the light source unit (A1). The light source unit (A1) preferably has a light source, a power supply device (30), a terminal block and a case (31). The fixture body (1) preferably has side plates (first side plate 11, second side plate 12, third side plate 13, fourth side plate 14) surrounding the case (31). The side plates preferably have a window (17) in the portion facing the opening (314) that exposes the opening (314) to the outside of the fixture body (1). The edges of the window (17) on the side plates are preferably formed in a curved shape.

[0081] The lighting fixture (B1) according to the fifth embodiment can prevent damage to the insulation of the electric wires at the edge of the window (17) on the side plate of the fixture body (1).

[0082] A lighting fixture (B1) according to a sixth aspect of this disclosure can be realized in combination with any of the first to fifth aspects. The lighting fixture (B1) according to the sixth aspect preferably comprises a plurality of terminal blocks. The plurality of terminal blocks preferably include a first terminal block (power terminal block 32) electrically connected to an external power line and a second terminal block (signal terminal block 33) electrically connected to an external signal line.

[0083] The lighting fixture (B1) according to the sixth embodiment allows the electrical connection of the power line to the first terminal block and the electrical connection of the signal line to the second terminal block to be performed simultaneously through the opening (314) of the case (31). Therefore, the lighting fixture (B1) according to the sixth embodiment can improve the work efficiency of the electrical connection of wires to multiple terminal blocks.

[0084] A lighting fixture (B1) according to the seventh aspect of this disclosure can be realized by combining it with the sixth aspect. In the lighting fixture (B1) according to the seventh aspect, it is preferable that the first terminal block and the second terminal block each have a plurality of insertion holes (324; 334). It is preferable that the plurality of insertion holes (324) of the first terminal block are arranged in a row on the first side surface (321) of the housing (320) of the first terminal block. It is preferable that the plurality of insertion holes (334) of the second terminal block are arranged in a row on the first side surface (331) of the housing (330) of the second terminal block. It is preferable that the first terminal block and the second terminal block are housed in a case (31) such that the plurality of insertion holes (324; 334) of each are parallel to each other.

[0085] The lighting fixture (B1) according to the seventh embodiment allows for a smaller case (31) compared to the conventional example where multiple insertion holes in each of the two terminal blocks are arranged in a single row.

[0086] A lighting fixture (B1) according to the eighth aspect of this disclosure can be realized by combining it with the seventh aspect. In the lighting fixture (B1) according to the eighth aspect, it is preferable that the first terminal block and the second terminal block are housed in a case (31) such that the insertion direction of the plurality of insertion holes (324) of the first terminal block intersects with the insertion direction of the plurality of insertion holes (334) of the second terminal block.

[0087] The lighting fixture (B1) according to the eighth embodiment can improve the workability when inserting wires into the insertion holes (324, 334) of each terminal block compared to the case where the insertion direction of the first terminal block and the insertion direction of the second terminal block do not intersect.

[0088] A lighting fixture (B1) according to the ninth aspect of this disclosure can be realized in combination with the seventh or eighth aspect. In the lighting fixture (B1) according to the ninth aspect, it is preferable that the first terminal block and the second terminal block are housed in a case (31) such that the second side surface (322) of the housing (320) of the first terminal block, on which the operating section (325) is provided, faces the second side surface (332) of the housing (330) of the second terminal block, on which the operating section (335) is provided.

[0089] In the lighting fixture (B1) according to the ninth embodiment, the space for operating the operating section (325) of the first terminal block can be shared with the space for operating the operating section (335) of the second terminal block, so the case (31) can be made smaller compared to the case where the spaces are not shared.

[0090] A lighting fixture (B1) according to the tenth aspect of this disclosure can be realized in combination with any of the first to ninth aspects. The lighting fixture (B1) according to the tenth aspect preferably comprises a light source unit (A1) and a fixture body (1) that holds the light source unit (A1). The light source unit (A1) preferably has a light source (LED module 20), a power supply (30), a terminal block and a case (31). The fixture body (1) preferably has one or more hooks (15) that can be hooked onto a T-bar (9) that constitutes a system ceiling.

[0091] The lighting fixture (B1) according to the tenth embodiment allows the fixture body (1) to be easily attached to the T-bar (9). [Explanation of symbols]

[0092] A1 Light source unit B1 Lighting fixtures 1. Main body of the device 9 T-bar 11 1st side plate (side plate) 12 Second side plate (side plate) 13 Third side plate (side plate) 14 4th side plate (side plate) 15 Hook part 17 windows 20 LED modules (light sources) 30 Power supply 31 cases 32 Power terminal block (terminal block; 1st terminal block) 33 Signal terminal block (second terminal block) 314 Opening 320 cabinets 321 1st side 322 Second side 323 Third aspect 324 insertion holes 325 Operation section 330 cabinets 331 First aspect 332 Second side 334 Insertion holes 335 Operation section

Claims

1. Light source and A power supply device for illuminating the aforementioned light source, One or more terminal blocks for electrically connecting external wires to the power supply device, A case housing the power supply unit and the terminal block, Equipped with, The case has an opening that exposes at least a portion of the terminal block, The terminal block comprises a housing having one or more insertion holes through which the electric wires are inserted, and one or more operating parts provided on the housing that allow the electric wires to be pulled out from the insertion holes when operated through the opening. Lighting fixtures.

2. The housing is formed in a box shape having a first side surface provided with a plurality of insertion holes and a second side surface provided with a plurality of operating parts. The terminal block is housed in the case such that the first side and the second side face the opening. The lighting fixture according to claim 1.

3. The opening is formed to expose a third side of the housing adjacent to the first and second sides. The lighting fixture according to claim 2.

4. The edge of the opening in the case is formed in a curved shape. A lighting fixture according to any one of claims 1 to 3.

5. Light source unit, The fixture body that holds the light source unit, Equipped with, The light source unit comprises the light source, the power supply, the terminal block, and the case. The main body of the device has side plates surrounding the case, The side plate has a window in the portion facing the opening that exposes the opening to the outside of the main body of the device. The edge of the window on the side plate is formed in a curved shape. A lighting fixture according to any one of claims 1 to 3.

6. The terminal block comprises multiple such terminal blocks, The plurality of terminal blocks include a first terminal block electrically connected to an external power line and a second terminal block electrically connected to an external signal line. A lighting fixture according to any one of claims 1 to 3.

7. The first terminal block and the second terminal block each have a plurality of insertion holes, The plurality of insertion holes of the first terminal block are arranged in a row on the first side surface of the housing of the first terminal block. The plurality of insertion holes of the second terminal block are arranged in a row on the first side surface of the housing of the second terminal block. The first terminal block and the second terminal block are housed in the case such that the plurality of insertion holes they each have are parallel to each other. The lighting fixture according to claim 6.

8. The first terminal block and the second terminal block are housed in the case such that the insertion directions of the plurality of insertion holes in the first terminal block intersect with the insertion directions of the plurality of insertion holes in the second terminal block. The lighting fixture according to claim 7.

9. The first terminal block and the second terminal block are housed in the case such that the second side of the housing of the first terminal block on which the operating section is provided faces the second side of the housing of the second terminal block on which the operating section is provided. The lighting fixture according to claim 7.

10. Light source unit, The fixture body that holds the light source unit, Equipped with, The light source unit comprises the light source, the power supply, the terminal block, and the case. The fixture body has one or more hooking parts that can be hooked onto the T-bars that make up the system ceiling. A lighting fixture according to any one of claims 1 to 3.

Images