Lighting fixtures

Abstract

To improve workability of work for attachment to an appliance body.SOLUTION: A luminaire 1 comprises an emergency light source unit 4, and an appliance body 2 supporting the emergency light source unit 4. The appliance body 2 comprises a housing part 20 formed in a long box shape, and housing at least a portion of the emergency light source unit 4. The emergency light source unit 4 comprises an emergency light source module, a lighting circuit for lighting the emergency light source module by emergency power, and a cover supporting the emergency light source module and the lighting circuit. The cover is formed in a box shape comprising an opening in one surface, and attached to the appliance body 2 while the opening is made to face the housing part 20. In the appliance body 2, a second power supply hole 204 into which a second power supply line 6 for supplying the emergency power is introduced is provided in the bottom surface of the housing part 20 opposed to the cover.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a lighting fixture, and more particularly, to a lighting fixture including a light source unit that is lit by power supplied from the outside via a power line.

Background Art

[0002] As a conventional example, a lighting fixture described in Patent Document 1 is exemplified. The lighting fixture described in Patent Document 1 includes a fixture main body attached to a ceiling material (construction material), a light source unit detachably attached to the fixture main body, and an emergency light source unit. The fixture main body is formed in a long shape and has a housing recess on the side opposite to the construction material in which at least a part of the light source unit is housed. The emergency light source unit includes an emergency light source, an emergency power source, and a power supply device. The emergency power source has a plurality of storage batteries, is charged by a normal power source, and supplies power to the power supply device when a power failure occurs in the normal power source. The power supply device charges the emergency power source with the normal power source when the normal power source is being supplied normally, and lights the emergency light source with the power supplied from the emergency power source when a power failure occurs in the normal power source. The housing portion of the fixture main body houses the light source unit and the emergency light source unit side by side along the longitudinal direction of the housing portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] 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 extremely large. Therefore, the lighting fixtures installed in such buildings are supplied with power from an emergency power source installed in the building instead of a storage battery built into the fixture main body to perform emergency lighting.

[0005] As described above, in lighting fixtures where the emergency power supply is installed outside the fixture body, the power line for the emergency power supply is routed into the fixture body and electrically connected to the lighting circuit that illuminates the light source of the emergency lighting via a terminal block located inside the fixture body.

[0006] However, when the terminal block is housed in a recess in the fixture body, it is desirable to improve the ease of installation of the light source unit (normal illumination light source) into the fixture body.

[0007] The purpose of this disclosure is to provide a lighting fixture that can improve the workability of the installation process on the fixture body. [Means for solving the problem]

[0008] A lighting fixture relating to one aspect of this disclosure comprises a light source unit and A regular light source unit equipped with a regular light source that is lit by regular power, The aforementioned light source unit and the above-mentioned regular light source unit The device comprises a fixture body that supports the light source unit. The fixture body is formed in the shape of a long box and has a housing that houses at least a part of the light source unit. The light source unit comprises a light source, a lighting circuit that lights up the light source with emergency power, and a support member that supports the light source and the lighting circuit. The support member is formed in the shape of a box with one side open and is attached to the fixture body with the opening facing the housing. The fixture body has a power hole in the bottom surface of the housing that faces the support member, through which a power line for supplying the emergency power is introduced. The main body of the device supports the regular light source unit by housing a portion of the regular light source unit next to the light source unit along the longitudinal direction of the housing section. [Effects of the Invention]

[0009] The lighting fixtures disclosed herein have the effect of improving the workability of the installation process on the fixture body. [Brief explanation of the drawing]

[0010] [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. [Figure 14] Figure 14 is a perspective view of the lighting fixture according to Modification 3. [Figure 15] Figure 15 is a perspective view of the lighting fixture according to Modification 4. [Modes for carrying out the invention]

[0011] A light source unit and a lighting fixture according to an embodiment of the present disclosure will be described in detail with reference to the drawings. However, each of the drawings described in the following embodiments is a schematic diagram, and the respective ratios of the sizes and thicknesses of the respective components do not necessarily reflect the actual dimensional ratios. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as the effects of the present disclosure can be achieved.

[0012] The lighting fixture 1 according to the embodiment is installed in a building such as a high-rise building or a large commercial facility, and is a so-called separately-installed emergency lighting fixture that receives power supply from an emergency power source installed in the building and performs emergency lighting. And the light source unit according to the embodiment is an emergency light source unit 4 that is attached to the lighting fixture 1 and performs emergency lighting. In the following description, unless otherwise specified, the front-rear, up-down, and left-right directions indicated by the arrows in FIG. 1 are defined as the front-rear, up-down, and left-right directions of the emergency light source unit 4, the lighting fixture 1, and other components.

[0013] (1. Schematic Configuration of Lighting Fixture) As shown in FIGS. 1 and 2, the lighting fixture 1 includes a fixture main body 2, a normal light source unit 3, and an emergency light source unit 4.

[0014] 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 failure). The normal light source unit 3 is supplied with normal power from a normal power source via a first power line 5.

[0015] 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-power 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.

[0016] The fixture body 2 is installed on the ceilings of rooms, conference rooms, and corridors in the building. The fixture body 2 supports the regular light source unit 3 and the emergency light source unit 4. The fixture body 2 has a first power port 203 for introducing a first power line 5 from the outside and a second power port 204 for introducing a second power line 6 from the outside.

[0017] (2. Components of the main unit of the device) 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] A pair of hooking holes 207 are provided in the front first side plate 201 (see Figure 1). Each hooking hole 207 is a rectangular 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.

[0023] 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.

[0024] (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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] (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.

[0029] (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.

[0030] 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.

[0031] 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.

[0032] (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).

[0033] 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.

[0034] 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).

[0035] (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.

[0036] (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).

[0037] 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).

[0038] 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.

[0039] 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).

[0040] 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).

[0041] (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).

[0042] 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.

[0043] 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).

[0044] 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).

[0045] 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).

[0046] 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.

[0047] (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.

[0048] (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.

[0049] 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.

[0050] 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.

[0051] 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).

[0052] 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.

[0053] 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.

[0054] (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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] The lighting fixture according to this embodiment does not necessarily have to be formed in a long rectangular shape. For example, the lighting fixture may be configured such that the fixture body is formed in a circular shape, a circular emergency light source unit is attached to the center of the fixture body, and an annular normal light source unit is attached around the emergency light source unit.

[0059] (5-3. Modified Example 3) The lighting fixture 1C according to Modification 3 is a dedicated emergency lighting fixture that provides only emergency lighting, a so-called emergency light. As shown in Figure 14, the lighting fixture 1C according to Modification 3 (hereinafter abbreviated as lighting fixture 1C) has a shape similar to the emergency light source unit 4 of the lighting fixture 1 according to the embodiment.

[0060] The lighting fixture 1C comprises a rectangular box-shaped fixture body 2C and a cover 43C that is connected to the fixture body 2C so as to close the opening on the bottom surface of the fixture body 2C. The fixture body 2C and the housing are integrally constructed.

[0061] The fixture body 2C is directly attached to the ceiling panel by being mounted on mounting bolts embedded in the ceiling panel.

[0062] (5-4. Modification 4) The lighting fixture 1D according to Modification 4 is a dedicated emergency lighting fixture (emergency light), just like the one in Modification 3. As shown in Figure 15, the lighting fixture 1D according to Modification 4 (hereinafter abbreviated as lighting fixture 1D) comprises a cylindrical fixture body 2D, a disc-shaped cover 43D that covers the lower surface of the fixture body 2D, and a pair of mounting springs 47.

[0063] The lens 402 of the emergency LED module 40 protrudes downward from the bottom surface of the cover 43D through a window located in the center of the cover 43D.

[0064] The fixture body 2D is inserted into a recessed hole provided in the ceiling panel along with a pair of mounting springs 47. The lighting fixture 1D is then attached to the ceiling panel by sandwiching it between the pair of mounting springs 47 and the cover 43D.

[0065] (6. Features of the light source unit [emergency light source unit] according to the embodiment) The emergency light source unit 4 includes a terminal block 42 electrically connected to a lighting circuit 410, and one or more support members (a cover 43 and a mounting plate 44) that support the lighting circuit 410 and the terminal block 42 side by side. The terminal block 42 has a housing 420 into which a second power line 6 for supplying power to the lighting circuit 410 is inserted. The cover 43 supports the terminal block 42 such that the first direction (forward direction) into which the second power line 6 is inserted into the first insertion hole 421 intersects with the second direction (left-right direction) into which the emergency LED module 40 and the terminal block 42 are adjacent, and provides space in front of the first insertion hole 421 of the housing 420 along the first direction (see Figures 6 and 8).

[0066] However, since the emergency light source unit 4 has space in front of the first insertion hole 421 of the housing 420, the second power line 6 can be easily inserted into the first insertion hole 421 and electrically connected to the terminal block 42. As a result, the emergency light source unit 4 can improve the workability of the installation work on the fixture body 2.

[0067] Furthermore, in the emergency light source unit 4, the cover 43 is equipped with a cover body 430 that protects the emergency LED module 40, the lighting circuit 410, and the terminal block 42. Therefore, the emergency light source unit 4 can protect the emergency LED module 40, the lighting circuit 410, and the terminal block 42 from, for example, heat and flames caused by a fire. The light emitted from the emergency LED module 40 is irradiated into the illuminated space through the holes 4301 in the cover body 430. Moreover, since the cover body 430 (cover 43) and the mounting plate 44 of the emergency light source unit 4 are integrally connected by screws, the workability of the assembly work can be improved. Furthermore, the cover 43 has a mounting piece 431 for attaching the cover body 430 to the fixture body 2, and the mounting piece 431 protrudes outside the cover body 430. Therefore, the workability of the assembly work of the emergency light source unit 4 can be further improved.

[0068] Here, the mounting plate 44 has a fixing plate 440 to which the emergency LED module 40 is fixed, and a side plate 441 that rises from the fixing plate 440 along the thickness direction (vertical direction) of the fixing plate 440. The fixing plate 440 and the side plate 441 are integrally formed from a metal plate material (metal material) such as a stainless steel plate or a galvanized steel plate.

[0069] However, the emergency light source unit 4 can suppress the intrusion of foreign matter such as dust into the housing section 20A by, for example, blocking most of the opening 27 with the side plate 441 when there is an opening 27 in the housing section 20A.

[0070] (7. Characteristics of lighting fixtures according to the embodiment) The lighting fixture 1 (including lighting fixtures 1A and 1B of modified examples 1 and 2; the same applies hereinafter) comprises a normal light source unit 3, an emergency light source unit 4, and a fixture body 2. The fixture body 2 has a long, box-shaped housing section 20, a hook hole 207, and a receiving bracket 23. The housing section 20 houses at least a portion of each of the normal light source unit 3 and the emergency light source unit 4. The hook hole 207 and the receiving bracket 23 are provided in the housing section 20 to detachably attach the normal light source unit 3. The fixture body 2 supports the normal light source unit 3 and the emergency light source unit 4 in a state where they are housed side by side along the longitudinal direction of the housing section 20.

[0071] However, the lighting fixture 1 can provide both normal and emergency lighting by supporting both a normal light source unit 3 and an emergency light source unit 4 in a single fixture body 2. Moreover, in the lighting fixture 1, since there is space in front of the first insertion hole 421 of the housing 420 of the emergency light source unit 4, the second power line 6 can be easily inserted into the first insertion hole 421 and electrically connected to the terminal block 42. As a result, the lighting fixture 1 can improve the workability of the installation of the emergency light source unit 4 to the fixture body 2.

[0072] Furthermore, in the lighting fixture 1, the housing section 20 has a second power supply hole 204 through which a second power line 6, electrically connected to the terminal block 42, is introduced. The terminal block 42 is positioned such that the first insertion hole 421 of the housing 420 faces the second power supply hole 204. Here, "facing the first insertion hole 421 with the second power supply hole 204" means that, in the width direction of the housing section 20, the front of the housing 420 of the terminal block 42 faces the rear of the housing section 20 where the second power supply hole 204 is provided.

[0073] However, by aligning the first insertion hole 421 with the second power supply hole 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 hole 421 faces 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.

[0074] 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.

[0075] (8. Summary) A light source unit (emergency light source unit 4) according to a first aspect of this disclosure comprises a light source (emergency LED module 40) and a lighting circuit (410) for lighting the light source. The light source unit according to the first aspect comprises a terminal block (42) electrically connected to the lighting circuit (410) and one or more support members (cover 43, mounting plate 44) that support at least the light source and the terminal block (42) adjacent to each other. The terminal block (42) has a housing (420) into which a power line (second power line 6) for supplying power to the lighting circuit (410) is inserted (first insertion hole 421). The support members support the terminal block (42) such that the first direction (forward direction) into which the power line is inserted intersects with the second direction (left-right direction) in which the light source and the terminal block (42) are adjacent, and a space is provided in front of the insertion hole of the housing (420) along the first direction.

[0076] In the first embodiment, the light source unit has a space provided in front of the insertion hole (first insertion hole 421) of the housing (420), making it easy to insert the power line (second power line 6) into the insertion hole and electrically connect it to the terminal block (42). As a result, the light source unit in the first embodiment can improve the workability of the installation work on the fixture body (2).

[0077] A light source unit according to a second aspect of this disclosure can be realized by combining it with the first aspect. In the light source unit according to the second aspect, the support member preferably includes a protective member (cover body 430) that protects the light source, the lighting circuit (410), and the terminal block (42). The protective member preferably has an opening (hole 4301) that allows light emitted from the light source to pass through.

[0078] The light source unit according to the second embodiment can protect the light source, lighting circuit (410), and terminal block (42) from heat and flames caused by a fire, for example.

[0079] A light source unit according to a third aspect of this disclosure can be realized by combining it with a second aspect. In the light source unit according to the third aspect, it is preferable that the protective member is integrally coupled with the support member.

[0080] The light source unit according to the third embodiment can improve the workability of assembly compared to the case in which the protective member is not integrally connected with the support member.

[0081] A light source unit according to a fourth aspect of this disclosure can be realized by combining it with any of the first to third aspects. In the light source unit according to the fourth aspect, the support member has a fixing plate (440) to which the light source is fixed, and a side plate (441) that rises from the fixing plate (440) along the thickness direction of the fixing plate (440). Preferably, the fixing plate (440) and the side plate (441) are integrally formed from a metal material.

[0082] In the fourth embodiment of the light source unit, for example, when a part of the housing (20A) is open, the entry of foreign matter such as dust into the housing (20A) can be suppressed by covering the open part with a side plate (441).

[0083] A light source unit according to a fifth aspect of this disclosure can be realized in combination with any of the first to fourth aspects. In the light source unit according to the fifth aspect, the support member preferably includes a protective member (cover 43) that protects the light source, lighting circuit (410), and terminal block (42). The protective member preferably has a mounting piece (431) for attaching the protective member to the fixture body (2). The mounting piece (431) preferably protrudes outward from the protective member.

[0084] The light source unit according to the fifth embodiment can further improve the workability of the assembly process compared to the case in which the mounting piece does not protrude outside the protective member.

[0085] A lighting fixture (1; 1A; 1B) according to a sixth aspect of the present 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) that supports the first and second light source units. The second light source unit is a light source unit according to any of the first to fifth aspects. The fixture body (2) has a housing section (20) formed in the shape of a long box and a mounting section (hooking hole 207, receiving bracket 23). The housing section (20) houses at least a portion of each of the first and second light source units. The mounting section is provided in the housing section (20) and detachably mounts the first light source unit. The fixture body (2) 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).

[0086] The lighting fixture (1;1A;1B) according to the sixth embodiment can improve the workability of the installation of the second light source unit to the fixture body (2).

[0087] A lighting fixture (1;1A;1B) according to the seventh aspect of this disclosure can be realized by combining it with the sixth aspect. In the lighting fixture (1;1A;1B) according to the seventh aspect, the protective member preferably has a fixing part (432) to which the terminal block (42) is fixed. The housing part (20) preferably has a power hole (second power hole 204) for introducing a power line (second power line 6) that is electrically connected to the terminal block (42). The terminal block (42) is preferably arranged such that the insertion hole (first insertion hole 421) of the housing (420) faces the power hole.

[0088] The lighting fixture (1;1A;1B) according to the seventh 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 seventh 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 an increase in the size of the fixture body (2;2A;2B).

[0089] The lighting fixture (1; 1A; 1B) according to the eighth aspect of the present disclosure can be realized by a combination with the seventh aspect. In the lighting fixture (1; 1A; 1B) according to the eighth aspect, it is preferable that the power supply holes include a first power supply hole (203) and a second power supply hole (204). The first power supply hole (203) is for introducing a first power supply line (5) for supplying normal power to the first light source unit. The second power supply hole (204) is for introducing a second power supply line (6) for supplying emergency power to the second light source unit.

[0090] The lighting fixture (1; 1A; 1B) according to the eighth aspect can facilitate the routing work of the first power supply line (5) and the second power supply line (6) in the fixture body (2; 2A; 2B) compared to the case where the first power supply hole (203) and the second power supply hole (204) share one hole.

Description of Reference Numerals

[0091] 1, 1A, 1B Lighting fixture 2, 2A, 2B Fixture body 3 Normal light source unit (first light source unit) 4 Emergency light source unit (light source unit; second light source unit) 5 First power supply line 6 Second power supply line (power supply line) 20, 20A, 20B Accommodation part 23 Socket fitting (mounting part) 40 Emergency LED module (light source) 42 Terminal block 43 Cover (supporting member) 44 Mounting plate (supporting member) 203 First power supply hole 204 Second power supply hole (power supply hole) 207 Hanging hole (mounting part) 410 Lighting circuit 412 First outgoing line (outgoing line) 420 Housing 421 First insertion hole (insertion hole) 430 Cover body (protective member) 431 Mounting piece 432 Fixing part 440 Fixing Plate 441 Side Panel 4301 Hole (Opening)

Claims

1. Light source unit, A regular light source unit equipped with a regular light source that is lit by regular power, The fixture body supporting the light source unit and the regular 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 part of the light source unit. The aforementioned light source unit is Light source and A lighting circuit that uses emergency power to illuminate the light source, The light source and the support member that supports the lighting circuit, Equipped with, The support member is formed in the shape of a box with one side open, and is attached to the main body of the device with the opening facing the housing. The main body of the device is provided with a power port on the bottom surface of the housing facing the support member, through which a power line for supplying emergency power is introduced. The main body of the fixture supports the regular light source unit by housing a portion of the regular light source unit next to the light source unit along the longitudinal direction of the housing section. Lighting fixtures.

2. The support member supports the light source and the lighting circuit so that they overlap in the direction in which the light source unit is housed in the housing, The lighting fixture according to claim 1.

3. The support member has a hole that exposes a part of the light source. A lighting fixture according to claim 1 or 2.

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