Lighting fixtures

Abstract

The objective of this disclosure is to facilitate the wiring work within the device body. [Solution] The fixture body 2 has a housing section 20 that houses at least a portion of each of the normal light source unit 3 and the emergency light source unit 4. The fixture body 2 supports the emergency light source unit 4 in a state where it is housed at one end of the housing section 20 in the longitudinal direction. The housing section 20 has a first power port 203 through which a first power line 5 is introduced from outside the fixture body 2, and a second power port 204 through which a second power line 6 for supplying power to the emergency light source unit 4 is introduced from outside the fixture body 2. The first power port 203 is provided in the housing section 20 in a part corresponding to the normal light source unit 3. The second power port 204 is provided in the housing section 20 in a part corresponding to the emergency light source unit 4.

Description

Technical Field

[0001] The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture including two light source units.

Background Art

[0002] Conventionally, as a lighting fixture that provides normal lighting and emergency lighting, a lighting fixture incorporating a storage battery as an emergency power source has been provided (see, for example, Patent Document 1).

[0003] By the way, in buildings such as high-rise office buildings and large-scale commercial facilities, the number of lighting fixtures installed for emergency lighting becomes very large. Therefore, the lighting fixtures installed in such buildings are supplied with power from an emergency power source installed in the building instead of the storage battery built in the fixture body to perform emergency lighting.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the lighting fixture in which the emergency power source is installed outside the fixture body as described above, a power cord for the normal power source to which the normal power source for normal lighting is supplied and a power cord for the emergency power source to which the emergency power source is supplied are drawn into the fixture body. That is, the fixture body requires a power hole into which the power cord for the normal power source is drawn and a power hole into which the power cord for the emergency power source is drawn. However, when these two types of power holes are provided near the center of the long fixture body, the routing work of the two types of power cords drawn into the fixture body may become complicated.

[0006] The purpose of this disclosure is to provide a lighting fixture that facilitates the routing of wiring within the fixture body. [Means for solving the problem]

[0007] A lighting fixture according to one aspect of the present disclosure comprises a first light source unit, a second light source unit, and a fixture body that supports the first and second light source units. The fixture body is formed in the shape of a long box and has a housing section that houses at least a portion of each of the first and second light source units. The fixture body supports the second light source unit in a state where it is housed at one end of the housing section in the longitudinal direction. The housing section has a first power port through which a first power line is introduced from outside the fixture body, and a second power port through which a second power line for supplying power to the second light source unit is introduced from outside the fixture body. The first power port is provided in the housing section in a location corresponding to the first light source unit. The second power port is provided in the housing section in a location corresponding to the second light source unit. [Effects of the Invention]

[0008] The lighting fixtures disclosed herein have the effect of simplifying the wiring work within the fixture body. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is an exploded perspective view of a lighting fixture according to an embodiment of this disclosure. [Figure 2] Figure 2A is a top view of the same lighting fixture. Figure 2B is a bottom view of the same lighting fixture. Figure 2C is a side view of the same lighting fixture. [Figure 3] Figure 3 is a bottom view of the emergency light source unit in the same lighting fixture. [Figure 4] Figure 4 is an exploded perspective view of the same emergency light source unit, seen from below. [Figure 5] Figure 5 is an exploded perspective view of the same emergency light source unit, seen from above. [Figure 6] Figure 6 is a top view of the same emergency light source unit. [Figure 7] Figure 7 is a side view of the same emergency light source unit. [Figure 8] Figure 8 is a side view of the same emergency light source unit. [Figure 9] Figure 9 is a side view of the same emergency light source unit. [Figure 10] Figure 10A is a partially abbreviated bottom view of the same lighting fixture with the normal light source unit and emergency light source unit removed. Figure 10B is a partially abbreviated bottom view of the same lighting fixture. [Figure 11] Figure 11 is a perspective view of a lighting fixture according to Modification 1. [Figure 12] Figure 12 is a side view of a lighting fixture according to Modification 1. [Figure 13] Figure 13 is a perspective view of the lighting fixture according to Modification 2. [Modes for carrying out the invention]

[0010] A lighting fixture according to an embodiment of this disclosure will be described in detail with reference to the drawings. However, the figures described in the embodiments below are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. The configuration described in the following embodiments is merely one example 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.

[0011] (1. Outline of the lighting fixture configuration) The lighting fixture 1 according to an embodiment of the present disclosure (hereinafter abbreviated as the lighting fixture 1) is installed in a building such as a high-rise building or a large commercial facility, and receives power supply from an emergency power source installed in the building to provide emergency lighting, which is a so-called separately-located emergency lighting fixture for different power sources. In the following description, unless otherwise specified, the front-back, up-down, and left-right directions indicated by arrows in FIG. 1 are defined as the front-back, up-down, and left-right directions of the lighting fixture 1 and its components.

[0012] As shown in FIGS. 1 and 2, the lighting fixture 1 includes a fixture body 2, a normal light source unit 3, and an emergency light source unit 4.

[0013] The normal light source unit 3 is lit by normal power supplied from a normal power source such as a commercial power system and goes out when the supply of normal power stops (power outage). The normal light source unit 3 is supplied with normal power from a normal power source via a first power line 5.

[0014] The emergency light source unit 4 is lit by emergency power supplied from an emergency power source and goes out when the supply of emergency power stops. The emergency power source has a DC power supply device having a storage battery and / or a self-generation device. The emergency light source unit 4 is supplied with emergency power from an emergency power source via a second power line 6. However, the second power line 6 is composed of a so-called fire-resistant wire.

[0015] The fixture body 2 is installed on the ceiling of each living room, conference room, and corridor of the building. The fixture body 2 supports the normal light source unit 3 and the emergency light source unit 4. The fixture body 2 has a first power hole 203 for introducing the first power line 5 from the outside and a second power hole 204 for introducing the second power line 6 from the outside.

[0016] (2. Configuration of the Fixture Body) The main body of the device 2 comprises a housing section 20, a pair of inclined sections 21, and mounting sections (a hooking hole 207 and a receiving bracket 23, which will be described later). The housing section 20 is formed in the shape of a long box with its longitudinal direction running horizontally and its bottom surface open. The housing section 20 has a bottom plate 200, a pair of first side plates 201, and a pair of second side plates 202. The bottom plate 200 is formed in the shape of a long rectangle. Each of the pair of first side plates 201 is formed in the shape of a long rectangle. Each first side plate 201 protrudes from its end (front and rear) along the longitudinal direction of the bottom plate 200, along the thickness direction (downward) of the bottom plate 200. Each of the pair of second side plates 202 is formed in the shape of an inverted trapezoid. Each second side plate 202 protrudes from its end (left and right) along the short direction of the bottom plate 200, along the thickness direction (downward) of the bottom plate 200.

[0017] Each of the pair of inclined sections 21 is formed in the shape of a long rectangle. One inclined section 21 protrudes diagonally upward from one end (front end) along the longitudinal direction of the housing section 20. The other inclined section 21 protrudes diagonally upward from the other end (rear end) along the longitudinal direction of the housing section 20. In addition, both ends (left and right ends) along the longitudinal direction of each inclined section 21 are connected to the slanted edges of each second side plate 202.

[0018] A first power supply hole 203 is provided in the center of the longitudinal direction of the base plate 200 (see Figures 1 and 2A). The first power supply hole 203 is a round hole and is located in the center of the short side of the longitudinal center of the base plate 200. A power terminal block 24 is also mounted near the first power supply hole 203 on the underside of the base plate 200 (see Figure 1). The power terminal block 24 is electrically connected to the first power line 5 introduced from the first power supply hole 203. Three wires 240, including a ground wire, are drawn out from the power terminal block 24. Furthermore, plug connectors 241 are electrically connected to the ends of these three wires 240.

[0019] Furthermore, the base plate 200 is provided with four bolt holes 205. The four bolt holes 205 are round holes, with two located in front of and two behind the first power supply hole 203. One mounting bolt embedded in the ceiling is inserted into each of the two bolt holes 205 that are equidistant from the first power supply hole 203. The fixture body 2 is then attached to the ceiling (ceiling material) by tightening nuts onto these two mounting bolts.

[0020] Furthermore, a second power supply hole 204 is provided at the right end of the base plate 200. The second power supply hole 204 is a round hole and is located towards the rear of the right end of the base plate 200 (see Figures 1 and 2A). A bushing 206 is attached to the edge of the second power supply hole 204 on the base plate 200. The bushing 206 is formed in an annular shape from an electrically insulating material such as synthetic rubber. The bushing 206 protects the second power supply wire 6 (or its insulation) introduced from the second power supply hole 204 from the edge of the second power supply hole 204 on the base plate 200.

[0021] A pair of hooking holes 207 are provided in the front first side plate 201 (see Figure 1). Each hooking hole 207 is a square hole, and its longitudinal direction is aligned with the longitudinal direction (left-right direction) of the first side plate 201, and it is located near the bottom plate 200.

[0022] A pair of mounting brackets 23 are attached to the underside of the base plate 200 near the rear first side plate 201 (see Figure 1). Each mounting bracket 23 is located outside the hooking hole 207 in the longitudinal direction of the first side plate 201.

[0023] (3. Configuration of the regular light source unit) The regular light source unit 3 comprises a regular light source, a mounting member 30 to which the regular light source is attached, a light-transmitting cover 31 covering the regular light source, and a power supply unit 34 for illuminating the regular light source (see Figure 1). The regular light source has a long substrate and numerous LEDs (light-emitting diodes) mounted on the surface of the substrate. The mounting member 30 is formed from a metal material into a long rectangular trough shape. The mounting member 30 has a long rectangular plate-shaped bottom wall and a pair of side walls 300 rising upward from both ends in the short direction (left and right direction) of the bottom wall. The regular light source is attached to the lower surface of the bottom wall of the mounting member 30. The power supply unit 34 converts the regular power (AC power) supplied via the power terminal block 24, electric wires 240 and plug connector 241 into DC power. The power supply unit 34 is attached to the upper surface of the bottom wall of the mounting member 30. The regular light source and the power supply unit 34 are electrically connected by wires inserted through holes provided in the bottom wall. The regular light source lights up when DC power is supplied from the power supply unit 34 via the wires.

[0024] The light-transmitting cover 31 is formed in the shape of a long box with an open top surface, using a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin. The bottom surface of the light-transmitting cover 31 is formed in a curved shape that projects gently downward from both ends toward the center in the short-side direction (front-to-back direction). A diffusing material is mixed into the synthetic resin material that forms the light-transmitting cover 31. That is, light emitted from the normal light source is diffused when it passes through the light-transmitting cover 31.

[0025] The mounting member 30 also includes a pair of hook fittings 32 and a pair of hook springs 33. The tips of each of the pair of hook fittings 32 are formed in a hook shape. The hook-shaped tips of the pair of hook fittings 32 are provided near both ends in the longitudinal direction of the mounting member 30 so as to pass over the front side wall 300. The pair of hook springs 33 are made of torsion coil springs. Each hook spring 33 is provided near both the left and right ends of the rear end of the mounting member 30.

[0026] The regular light source unit 3 is detachably attached to the fixture body 2 by hooking a pair of hook fittings 32 into a pair of hook holes 207 on the fixture body 2, and by hooking a pair of hook springs 33 into a pair of receiving fittings 23 on the fixture body 2. The regular light source unit 3 is then housed in the housing section 20 of the fixture body 2, with the portion of the unit 3 excluding the light-transmitting cover 31 protruding from the opening of the housing section 20 (the lower surface of the housing section 20) (see Figure 2B). Specifically, the pair of side walls 300 of the mounting member 30 and the power supply unit 34 are housed in the housing section 20.

[0027] (4. Configuration of the emergency light source unit) As shown in Figures 3-9, the emergency light source unit 4 includes an emergency LED module 40, a lighting circuit block 41, a terminal block 42, a cover 43, a mounting plate 44, and a retaining piece 45.

[0028] (4-1. Configuration of the emergency LED module) The emergency LED module 40 includes an LED 400, an LED holder 401, a lens 402, a lens holder 403, and a heat sink 404 (see Figures 3 and 4). The LED 400 is, for example, a packaged white LED for lighting.

[0029] The heat sink 404 is formed in a flat plate shape from a material that is a good conductor of heat, such as aluminum or an aluminum alloy (see Figure 4). An LED holder 401 that supports the LED 400 is screwed to the lower surface of the heat sink 404. However, it is preferable to place a thermal conductive sheet between the LED 400 and the heat sink 404. Then, the heat generated by the LED 400 is conducted to the heat sink 404 via the thermal conductive sheet.

[0030] The lens 402 controls the light distribution of the light emitted from the LED 400. The lens 402 is attached to the underside of the heat sink 404 by a lens holder 403 so as to cover the LED 400 (see Figure 4). The lens holder 403 is fixed to the heat sink 404 by screws.

[0031] (4-2. Configuration of the lighting circuit block) The lighting circuit block 41 includes a lighting circuit 410, a case 411, a first input wire 412, and a second output wire 413 (see Figures 4-8).

[0032] The lighting circuit 410 includes a rectifier circuit, a converter circuit, a control circuit, a control power supply circuit, and the like. The lighting circuit 410 is made up of printed circuit boards. The first lead wire 412 and the second lead wire 413 each contain two wires, a positive wire and a negative wire. One end of the first lead wire 412 is electrically connected to the input terminal of the lighting circuit 410, and one end of the second lead wire 413 is electrically connected to the output terminal of the lighting circuit 410. The other end of the first lead wire 412 is electrically connected to the terminal block 42, which will be described later. The other end of the second lead wire 413 is electrically connected to the emergency LED module 40. Thus, the DC power (DC current) output from the lighting circuit 410 is supplied to the emergency LED module 40 via the second lead wire 413.

[0033] The case 411 is formed in a box shape from an electrically insulating synthetic resin material. The lighting circuit 410 is housed inside the case 411 (see Figure 4). The first lead wire 412 is brought out of the case 411 through a first opening 414 provided on the side of the case 411 (see Figure 7). Similarly, the second lead wire 413 is brought out of the case 411 through a second opening 415 provided on the side of the case 411 (see Figure 8).

[0034] (4-3. Terminal Block Configuration) The terminal block 42 is, for example, a screwless terminal block. This type of screwless terminal block (also called a quick-connect terminal block) has a rectangular parallelepiped housing 420. The front (rear) of the housing 420 is provided with two pairs of primary side (power supply side) insertion holes (first insertion holes 421) and two pairs of secondary side (load side) insertion holes (second insertion holes 422). The terminal block 42 can be electrically connected to conductors simply by inserting conductors (for example, single copper wires) into each insertion hole. One conductor of the first lead wire 412 is inserted into each of the second insertion holes 422 of the terminal block 42 (see Figure 8). One conductor of the second power supply line 6 is inserted into each of the first insertion holes 421 of the terminal block 42.

[0035] (4-4. Configuration of mounting plate and retaining piece) The mounting plate 44 has a fixing plate 440, a side plate 441, and a pair of support plates 442 (see Figures 4 and 5). The fixing plate 440, the side plate 441, and the pair of support plates 442 are each formed in a rectangular shape. The side plate 441 protrudes upward from one end (right end) in the longitudinal direction of the fixing plate 440. A locking hole 443, which is a rectangular hole, is provided at the upper end of the side plate 441 in the vertical center (see Figure 5).

[0036] A pair of support plates 442 protrude upward from both ends (front and rear) along the longitudinal direction of the fixing plate 440. Each support plate 442 has a fixing hole 444, which is a rectangular hole, and a vertical groove 445. The fixing hole 444 is provided at the left end of each support plate 442. The vertical groove 445 is provided along the vertical direction at the right end of each support plate 442. The upper end of the vertical groove 445 is open (see Figure 5).

[0037] The retaining piece 45 has an L-shaped main piece 450, a screw fastening piece 451 protruding from one end of the main piece 450 in the longitudinal direction, and a V-shaped locking piece 452 protruding from the other end of the main piece 450 in the longitudinal direction.

[0038] The emergency LED module 40 is attached to the mounting plate 44 by screwing it to the underside of the fixing plate 440 (see Figure 4).

[0039] The lighting circuit block 41 is attached to the mounting plate 44 by a pair of support plates 442 and a retaining piece 45. Two fixing claws 416 and one long projection 417 are provided on both the upper and lower sides of the case 411 of the lighting circuit block 41. The lighting circuit block 41 is positioned relative to the mounting plate 44 by inserting each projection 417 of the case 411 into one of the two vertical grooves 445 of each support plate 442. In addition, the two fixing claws 416 provided on the case 411 of the lighting circuit block 41 are inserted one into each of the fixing holes 444 of the support plate 442. Furthermore, the retaining piece 45 is attached to the upper surface of the fixing plate 440 of the mounting plate 44 by pressing the upper surface of the case 411 of the lighting circuit block 41 with the main piece 450 (see Figure 6). More specifically, the screw-fastening piece 451 of the retaining piece 45 is screwed to the fixing plate 440, and the locking piece 452 of the retaining piece 45 is locked to the edge of the locking hole 443 of the side plate 441 (see Figures 7-9).

[0040] (4-5. Cover composition) The cover 43 has a cover body 430 and a mounting piece 431 formed integrally with the cover body 430 (see Figures 4 and 5). The cover body 430 and the mounting piece 431 are integrally formed from a non-combustible material such as metal (for example, aluminum die-cast).

[0041] The cover body 430 is formed in a box shape with an open top, covering and protecting the emergency LED module 40, the lighting circuit block 41, and the terminal block 42. The bottom surface of the cover body 430 is formed in a curved shape that protrudes gently downward from both ends toward the center in the short-side direction (front-to-back direction), similar to the light-transmitting cover 31 of the normal light source unit 3 (see Figures 4 and 9). A recess 4300 is formed in the bottom surface of the cover body 430. The recess 4300 is formed in an oval shape when viewed from below (see Figure 3). A hole 4301 penetrates through the center (bottom) of the recess 4300. The hole 4301 is formed in a circular shape through which a part of the lens 402 of the emergency LED module 40 can be inserted.

[0042] The upper surface of the cover body 430 is provided with a plurality of bosses 4302, a fixing portion 432 to which the terminal block 42 is fixed, and a pair of hook portions 433 (see Figure 5). Each boss 4302 is formed in a cylindrical shape. Each boss 4302 is provided with a screw hole. The mounting plate 44 is then attached to the cover body 430 by screwing it to these plurality of bosses 4302 (see Figure 6).

[0043] The fixing portion 432 protrudes upward from the left end of the front end of the upper surface of the cover body 430 (see Figure 5). The fixing portion 432 is formed in a flat plate shape. A circular screw insertion hole 4320 is provided on the upper part of the fixing portion 432. Then, a screw 4321 inserted through the screw insertion hole 4320 is screwed into a hole provided on the back (front) of the housing 420, thereby fixing the housing 420 of the terminal block 42 to the rear surface of the fixing portion 432 (see Figures 6 and 7).

[0044] Each of the pair of hooks 433 is formed in an L-shape (see Figures 7 and 8). Each hook 433 protrudes upward from both the upper and lower ends of the left end of the upper surface of the cover body 430, leaving a gap between it and the upper end of the left end of the cover body 430 (see Figures 7 and 8).

[0045] The mounting piece 431 has a first projection 4311 that protrudes upward from the upper left end of the cover body 430, and a second projection 4312 that protrudes to the left from the center in the front-to-back direction at the upper end of the first projection 4311 (see Figure 5). The second projection 4312 is also provided with a screw insertion hole.

[0046] (4-6. Mounting structure of emergency light source unit) The emergency light source unit 4 is attached to the fixture body 2 using a mounting piece 431 and a pair of hooks 433. The pair of hooks 433 hook onto a flat projection 208 provided on the housing section 20 of the fixture body 2. The projection 208 protrudes inward (to the left) from the lower right end of the housing section 20 (see Figure 1). The mounting piece 431 is screwed to the bottom plate 200 by screwing a fixing screw 46, which is inserted through the screw insertion hole of the second projection 4312, into a screw hole 209 (see Figure 1) provided on the right end of the bottom plate 200 of the housing section 20.

[0047] (5. Modified examples of lighting fixtures according to the embodiment) (5-1. Variation 1) The lighting fixture 1A according to Modification 1 differs from the lighting fixture 1 according to the embodiment in the configuration of the fixture body 2A. The lighting fixture 1A according to Modification 1 (hereinafter abbreviated as lighting fixture 1A) is a so-called recessed type lighting fixture that is installed in the ceiling by embedding the fixture body 2A in a recessed hole provided in a double ceiling such as a system ceiling. However, in lighting fixture 1A, the normal light source unit 3 and the emergency light source unit 4 are the same as the normal light source unit 3 and the emergency light source unit 4 of lighting fixture 1 according to the embodiment. Therefore, the explanation of the normal light source unit 3 and the emergency light source unit 4 will be omitted.

[0048] As shown in Figures 11 and 12, the fixture body 2A includes a housing section 20A, a reflector unit 25, and a frame 26. The housing section 20A has a substantially identical configuration to the housing section 20 in the fixture body 2 of the lighting fixture 1 according to the embodiment, except that both ends in the longitudinal direction are open. That is, the housing section 20A is formed in the shape of a long box. The bottom plate 200 of the housing section 20A is provided with a first power supply hole and a second power supply hole in the same locations as the housing section 20 of the lighting fixture 1 according to the embodiment.

[0049] The reflector unit 25 includes a pair of first reflectors 251 and a pair of second reflectors 252. The pair of first reflectors 251 are formed in the shape of long rectangular flat plates, with dimensions approximately the same as the longitudinal length of the base plate 200. One of the first reflectors 251 is provided so as to be inclined downward and forward from the lower end of the front first side plate. The other first reflector 251 is provided so as to be inclined downward and backward from the lower end of the rear first side plate. The pair of second reflectors 252 are formed in the shape of trapezoids. The front end of one of the second reflectors 252 is connected to the left end of the front first reflector 251, and the rear end is connected to the left end of the rear first reflector 251. The front end of the other second reflector 252 is connected to the right end of the front first reflector 251. The rear end of the other second reflector 252 is connected to the right end of the rear first reflector 251. In other words, the reflector unit 25 is formed in a long, pyramidal truncated shape with its top and bottom surfaces open.

[0050] The frame 26 is formed in the shape of a long rectangular frame. The frame 26 is connected to the lower end of the reflector unit 25 (see Figures 11 and 12).

[0051] As described above, the fixture body 2A is constructed by inserting the housing section 20A and the reflector unit 25 into a rectangular recessed hole provided in the ceiling panel, and attaching the fixture body 2A (the bottom plate 200 of the housing section 20A) to mounting bolts hanging down from the ceiling slab. The frame 26 is positioned to contact the underside of the ceiling material (ceiling surface) from below, and is configured to seal the gap between the edge of the recessed hole in the ceiling material and the reflector unit 25.

[0052] Here, in the main body of the fixture 2A, the side plate 441 of the mounting plate 44 of the emergency light source unit 4 is aligned with the longitudinal direction of the housing section 20A and faces the opening 27 at one end of the housing section 20A in the longitudinal direction (see Figure 12). In other words, the side plate 441 of the emergency light source unit 4 blocks most of the opening 27 of the housing section 20A, thereby suppressing the entry of foreign matter such as dust into the housing section 20A.

[0053] (5-2. Variation 2) The lighting fixture 1B according to Modification 2 differs from the lighting fixture 1 according to the embodiment in the configuration of the fixture body 2B. The lighting fixture 1B according to Modification 2 (hereinafter abbreviated as lighting fixture 1B) is a so-called direct-mount type lighting fixture that is directly attached to the ceiling material using mounting bolts, similar to the lighting fixture 1 according to the embodiment. However, in lighting fixture 1B, the normal light source unit 3 and the emergency light source unit 4 are the same as the normal light source unit 3 and the emergency light source unit 4 of lighting fixture 1 according to the embodiment. Therefore, the explanation of the normal light source unit 3 and the emergency light source unit 4 will be omitted.

[0054] The fixture body 2B has a housing section 20B and a pair of reflectors 28 (see Figure 13). The housing section 20B has a configuration substantially the same as the housing section 20 in the fixture body 2 of the lighting fixture 1 according to the embodiment. That is, the housing section 20B is formed in the shape of a long box. The bottom plate of the housing section 20B is provided with a first power supply hole and a second power supply hole in the same locations as the housing section 20 of the lighting fixture 1 according to the embodiment.

[0055] Each of the pair of reflectors 28 is formed in a long rectangular shape. Each reflector 28 protrudes downward and outward from the lower end of a pair of side plates along the longitudinal direction of the housing 20B.

[0056] The fixture body 2B, configured as described above, is directly attached to the ceiling panel by attaching the housing section 20B to mounting bolts embedded in the ceiling panel.

[0057] (6. Features of the lighting fixture according to the embodiment) In the lighting fixture 1 (including lighting fixtures 1A and 1B of modified examples 1 and 2; the same applies hereinafter), the fixture body 2 supports the normal light source unit 3 and the emergency light source unit 4, which are housed side by side along the longitudinal direction (left-right direction) of the housing section 20. The housing section 20 has a second power port 204 through which a second power line 6 for supplying emergency power to the emergency light source unit 4 is drawn. The second power port 204 is provided in the housing section 20 in a location corresponding to the emergency light source unit 4.

[0058] Here, "the part of the housing 20 corresponding to the emergency light source unit 4" refers, for example, to the part of the housing 20 closer to the emergency light source unit 4 with respect to the mounting part for attaching the regular light source unit 3 (the hook hole 207 provided on the first side plate 201 and the receiving bracket 23 attached to the bottom plate 200) (see Figure 10A).

[0059] However, compared to the case where the second power supply port 204 is provided in a part that does not correspond to the emergency light source unit 4, for example, in the center of the longitudinal direction of the housing section 20, the lighting fixture 1 can facilitate the routing of wiring (second power line 6) within the fixture body 2.

[0060] Furthermore, it is preferable that the second power port 204 is provided in the housing section 20 in a location that overlaps with the emergency light source unit 4 when viewed from the front (downward) direction of each of the normal light source unit 3 and the emergency light source unit 4 (see Figures 10A and 10B).

[0061] However, compared to the case where the second power supply hole 204 is provided in the housing section 20 in a part that overlaps with the normal light source unit 3 when viewed from below, the lighting fixture 1 can avoid interference between the second power supply line 6 and the normal light source unit 3. As a result, the lighting fixture 1 can further simplify the wiring (second power supply line 6) routing work inside the fixture body 2.

[0062] Furthermore, the lighting fixture 1 is provided with a second power supply port 204 located near one end (near the rear end) along the width direction (front-to-back direction) that intersects the longitudinal direction (left-to-right direction) of the housing section 20. As a result, space is created in front of the second power supply port 204 in the housing section 20, making it easier to arrange the second power supply line 6 in this space. Consequently, the lighting fixture 1 can further simplify the wiring (second power supply line 6) routing work within the fixture body 2.

[0063] In the lighting fixture 1, the terminal block 42 of the emergency light source unit 4 is located at the end opposite to the second power supply hole 204 (front side) in the width direction (front-to-back direction) of the housing 20 (see Figures 1 and 10A). Therefore, the lighting fixture 1 can have a larger distance between the second power supply hole 204 and the terminal block 42 compared to the case where the terminal block 42 is located at the same side (rear side) as the second power supply hole 204 in the width direction of the housing 20. As a result, the lighting fixture 1 can further simplify the wiring work (second power supply line 6) within the fixture body 2.

[0064] Furthermore, in the lighting fixture 1, the terminal block 42 is arranged such that, in the width direction of the housing 20, the multiple first insertion holes 421 into which the second power line 6 is inserted face the second power hole 204. Here, "facing the multiple first insertion holes 421 with the second power hole 204" means that, in the width direction of the housing 20, the front of the housing 420 of the terminal block 42 faces the rear of the housing 20 where the second power hole 204 is provided.

[0065] However, by aligning the multiple first insertion holes 421 with the second power supply holes 204, the lighting fixture 1 can reduce the excess length of the second power supply line 6 required within the housing section 20, for example, compared to the case where the first insertion holes 421 face downwards. As a result, the lighting fixture 1 can reduce the space required to accommodate the excess length of the second power supply line 6 within the housing section 20, thereby suppressing an increase in the size of the fixture body 2.

[0066] Incidentally, in the fixture body 2 of the lighting fixture 1, a first power port 203 through which the first power line 5 is introduced and a second power port 204 through which the second power line 6 is introduced are provided independently. Therefore, compared to the case where the first power port 203 and the second power port 204 are shared in a single hole, the lighting fixture 1 can further simplify the routing of the first power line 5 and the second power line 6 within the fixture body 2.

[0067] (7. Summary) A lighting fixture (1; 1A; 1B) according to a first aspect of this disclosure comprises a first light source unit (normal light source unit 3), a second light source unit (emergency light source unit 4), and a fixture body (2; 2A; 2B) that supports the first and second light source units. The fixture body (2; 2A; 2B) has a housing section (20; 20A; 20B) formed in the shape of a long box, and mounting sections (hooking holes 207, receiving brackets 23) provided in the housing section (20; 20A; 20B). The housing section (20; 20A; 20B) houses at least a portion of each of the first and second light source units. The mounting sections detachably attach the first light source unit. The fixture body (2; 2A; 2B) supports the first and second light source units in a state where they are housed side by side along the longitudinal direction of the housing section (20; 20A; 20B). The housing section (20; 20A; 20B) has one or more power supply ports (first power supply port 203 or second power supply port 204) through which power lines (first power supply line 5 or second power supply line 6) for supplying power to at least one of the first light source unit and the second light source unit are drawn. The power supply ports (or, in the case of multiple power supply ports, the second power supply port 204 through which the second power supply line 6 is drawn) are provided in the housing section (20; 20A; 20B) in the part corresponding to the second light source unit.

[0068] In the lighting fixture (1;1A;1B) according to the first embodiment, a power supply hole is provided in the housing section (20;20A;20B) at a location corresponding to the second light source unit, thereby facilitating the routing of wiring (second power line 6) within the fixture body (2;2A;2B).

[0069] A lighting fixture (1;1A;1B) according to a second aspect of this disclosure can be realized by combining it with the first aspect. In the lighting fixture (1;1A;1B) according to the second aspect, it is preferable that the power supply port is provided in the housing section (20;20A;20B) on the side closer to the second light source unit with respect to the mounting section.

[0070] The lighting fixture (1;1A;1B) according to the second embodiment can further facilitate the routing of wiring (second power line 6) within the fixture body (2;2A;2B) by reducing the distance from the power supply hole to the second light source unit.

[0071] A lighting fixture (1;1A;1B) according to a third aspect of this disclosure can be realized by combination with the first or second aspect. In the lighting fixture (1;1A;1B) according to the third aspect, the power supply port is preferably provided in the housing (20;20A;20B) in a portion that overlaps with the second light source unit when viewed from the front of each of the first and second light source units.

[0072] The lighting fixture (1;1A;1B) according to the third embodiment can further facilitate the routing of wiring (second power line 6) within the fixture body (2;2A;2B) by avoiding interference between the power line and the second light source unit.

[0073] A lighting fixture (1;1A;1B) according to a fourth aspect of this disclosure can be realized in combination with any of the first to third aspects. In the lighting fixture (1;1A;1B) according to the fourth aspect, the power supply port is preferably located near one end of the housing (20;20A;20B) along the width direction intersecting the longitudinal direction.

[0074] The lighting fixture (1;1A;1B) according to the fourth embodiment can further facilitate the routing of wiring (second power line 6) inside the fixture body (2;2A;2B) by widening the space around the power supply hole in the housing section (20;20A;20B).

[0075] A lighting fixture (1;1A;1B) according to a fifth aspect of this disclosure can be realized by combining it with a fourth aspect. In a lighting fixture (1;1A;1B) according to a fifth aspect, the second light source unit preferably has a light source (emergency LED module 40) and a lighting circuit (410) that lights the light source using power supplied via a power line. The second light source unit preferably has lead wires (412) for inputting power to the lighting circuit (410) and a terminal block (42) to which the power line is electrically connected. The terminal block (42) is preferably located at the end of the housing (20;20A;20B) opposite to the power hole in the width direction.

[0076] In the fifth embodiment of the lighting fixture (1;1A;1B), the distance between the terminal block (42) and the power supply hole can be increased in the width direction of the housing section (20;20A;20B) compared to the case where the terminal block (42) is located at the same end as the power supply hole. As a result, the lighting fixture (1;1A;1B) in the fifth embodiment can further facilitate the routing of wiring (second power supply line 6) within the fixture body (2;2A;2B).

[0077] A lighting fixture (1;1A;1B) according to a sixth aspect of this disclosure can be realized by combining it with a fifth aspect. In a lighting fixture (1;1A;1B) according to a sixth aspect, the terminal block (42) preferably has a plurality of first insertion holes (421) into which power lines (second power lines 6) are inserted, and a plurality of second insertion holes (422) into which lead wires (412) are inserted. In the width direction of the housing section (20;20A;20B), the terminal block (42) preferably has the plurality of first insertion holes (421) facing the power holes.

[0078] The lighting fixture (1;1A;1B) according to the sixth embodiment can reduce the excess length of the power lines required within the housing section (20;20A;20B). As a result, the lighting fixture (1;1A;1B) according to the sixth embodiment can reduce the space required to accommodate the excess length of the wiring (second power line 6) within the housing section (20;20A;20B), thereby suppressing the enlargement of the fixture body (2;2A;2B).

[0079] A lighting fixture (1;1A;1B) according to the seventh aspect of this disclosure can be realized in combination with any of the first to sixth aspects. In the lighting fixture (1;1A;1B) according to the seventh aspect, the power supply port preferably includes a first power supply port (203) through which a first power line (5) for supplying normal power to a first light source unit is introduced. The power supply port preferably further includes a second power supply port (204) through which a second power line (6) for supplying emergency power to a second light source unit is introduced.

[0080] The lighting fixture (1;1A;1B) according to the seventh embodiment makes it easier to route the first power supply port (5) and the second power supply port (6) within the fixture body (2;2A;2B) compared to the case where the first power supply port (203) and the second power supply port (204) are shared by a single hole. [Explanation of symbols]

[0081] 1, 1A, 1B Lighting fixtures 2, 2A, 2B Main body of the device 3. Standard Light Source Unit (First Light Source Unit) 4. Emergency light source unit (second light source unit) 5 1st power line 6 2nd power line (power line) 20, 20A, 20B storage compartments 23 Mounting bracket (mounting part) 40 Emergency LED Modules (Light Sources) 42 Terminal block 203 1st power hole 204 2nd power hole (power hole) 207 Hook hole (mounting part) 410 Lighting Circuit 412 First lead line (lead line) 421 1st insertion hole 422 2nd insertion hole

Claims

1. First light source unit, The second light source unit, The fixture body supporting the first light source unit and the second light source unit, Equipped with, The main body of the device is formed in a long, box-like shape and has a housing section that accommodates at least a portion of the first light source unit and the second light source unit, The main body of the device supports the second light source unit in a state where it is housed at one end of the housing in the longitudinal direction of the housing section. The housing section has a first power port through which a first power line is introduced from outside the fixture body, and a second power port through which a second power line for supplying power to the second light source unit is introduced from outside the fixture body. The first power port is provided in the housing portion in a location corresponding to the first light source unit. The second power port is provided in the housing portion in a location corresponding to the second light source unit. Lighting fixtures.

2. The second light source unit comprises a light source, a lighting circuit that lights the light source using power supplied via the second power line, a wire for inputting the power to the lighting circuit, and a terminal block to which the second power line is electrically connected. A lighting fixture according to claim 1.

3. The terminal block has a plurality of first insertion holes into which the second power line is inserted, and a plurality of second insertion holes into which the electric wire is inserted. The terminal block is arranged such that the plurality of first insertion holes face the second power supply holes. The lighting fixture according to claim 2.

4. The terminal block is arranged such that the plurality of first insertion holes face the second power supply holes in the width direction intersecting the longitudinal direction of the housing portion. The lighting fixture according to claim 3.

5. The second light source unit is detachably supported by the fixture body. A lighting fixture according to any one of claims 1 to 4.

6. The second power supply port is provided in the housing portion in a part that overlaps with the second light source unit when viewed from the front direction of each of the first and second light source units. The lighting fixture according to claim 5.

7. The second light source unit is illuminated by emergency power supplied via the second power line. A lighting fixture according to any one of claims 1 to 6.

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