Illumination device

Abstract

To provide a lighting device, in which it is difficult for an emergency lighting fixture to receive motion heat of a normal lighting fixture.SOLUTION: A lighting device comprises: a lighting apparatus mounted to a mounted part; a first lighting fixture detachably mounted to a first space formed on the lighting apparatus; and a second lighting fixture provided to the lighting apparatus. The first lighting fixture has a first light source part serving as a light source, and a first light emission part covering the first light source part and transmitting light emitted from the first light source part. The second lighting fixture has a second light source part serving as a light source, a second light emission part covering the second light source part, transmitting light emitted from the second light source part, and an outer shell part constituting an outer shell of the second lighting fixture, and forming a second space for housing the second light source part together with the second light emission part. The first space and the second space are isolated from each other by the outer shell part.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a lighting device including a normal lighting fixture and an emergency lighting fixture.

Background Art

[0002] Conventionally, as an example of a lighting fixture attached to a ceiling or a wall surface, an emergency light integrated lighting device in which a normal lighting fixture and an emergency lighting fixture are attached in the same housing has been proposed (for example, Patent Document 1). The lighting device of Patent Document 1 lights an emergency lighting fixture using a storage battery as an emergency power source in an emergency situation where power supply from a commercial power source is stopped for some reason and the normal lighting fixture cannot be lit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the emergency light integrated lighting device of Patent Document 1, the emergency lighting fixture is disposed at a longitudinal end in the space where the normal lighting fixture is attached, and the emergency lighting fixture may be affected by the operating heat generated by the normal lighting fixture.

[0005] The present invention has been made to solve the above problems, and an object of the present invention is to provide a lighting device having a normal lighting fixture and an emergency lighting fixture, in which the emergency lighting fixture is less likely to be affected by the operating heat of the normal lighting fixture.

Means for Solving the Problems

[0006] The lighting device according to the present invention includes a lighting fixture attached to an attachment portion, a first lighting fixture detachably attached to a first space formed in the lighting fixture, and a second lighting fixture provided in the lighting fixture. The first lighting fixture has a first light source portion serving as a light source, and a first light emitting portion that covers the first light source portion and transmits light emitted from the first light source portion. The second lighting fixture has a second light source portion serving as a light source, a second light emitting portion that covers the second light source portion and transmits light emitted from the second light source portion, a battery that supplies power to the second light source portion, and an outer portion that forms an outer shape of the second lighting fixture and forms a second space in which the second light emitting portion, the second light source portion, and the battery are accommodated. Box-shaped The battery is accommodated inside the outer portion, shifted toward the side opposite to the first space. Box-shaped The outer portion is detachable from the second lighting fixture with the second lighting fixture removed. At the position where the battery is arranged The first space and the second space are separated by the outer portion.

Advantages of the Invention

[0007] In the lighting device of the present invention, the accommodation portion which is the first space and the second space are separated by the outer portion. Since the air in the first space whose temperature rises due to the operating heat of the first light source portion is separated by the outer portion, it does not move to the second space. Therefore, in the lighting device, thermal stress is not applied to the components of the second lighting fixture. As a result, in the lighting device, the emergency lighting fixture is less likely to be affected by the operating heat of the normal lighting fixture.

Brief Description of the Drawings

[0008]

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Embodiments for Carrying Out the Invention

[0009] Hereinafter, the lighting device 1 according to the embodiment of the present invention will be described with reference to the drawings. In each figure, the same or corresponding components are denoted by the same reference numerals, and the description may be omitted in some cases to avoid repetition. Here, the present invention is not limited by the embodiments described below. Also, in the following drawings, the relationship of the sizes of the respective components may be different from the actual ones. Further, in the description of the embodiments, directions or positions such as up, down, left, right, front, rear, front side, and back side may be indicated. These notations are for convenience of explanation and do not limit the arrangement, direction, and orientation of the device, instrument, or parts, etc.

[0010] Embodiment 1. FIG. 1 is a first-direction perspective view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 2 is a second-direction perspective view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 3 is a front view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 4 is a bottom view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 5 is a rear view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 6 is a top view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 7 is a side view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 8 is an exploded perspective view of the lighting device 1 according to Embodiment 1 of the present invention. With reference to FIGS. 1 to 8, the configuration of the lighting device 1 according to Embodiment 1 will be described.

[0011] In the following description, the direction along the longitudinal direction of the lighting device 1 is defined as the longitudinal direction (X-axis direction). Also, the direction orthogonal to the longitudinal direction (X-axis direction) and the short-side direction with respect to the longitudinal direction (X-axis direction) is defined as the short-side direction (Y-axis direction). And the direction orthogonal to both the longitudinal direction (X-axis direction) and the short-side direction (Y-axis direction) is defined as the vertical direction (Z-axis direction). Further, in the vertical direction (Z-axis direction), the direction toward the mounting portion 9 such as the ceiling or wall on which the lighting device 1 is mounted is defined as the upward Z1. And the direction opposite to the upward Z1 and toward the lighting space side from which light is irradiated from the lighting device 1 is defined as the downward Z2. Note that the upward Z1 is also the direction in which the first lighting fixture 20 is attached to the lighting fixture 10, and the downward Z2 is also the direction in which the first lighting fixture 20 is removed from the lighting fixture 10. Also, the first direction in FIG. 1 is the direction of viewing the lighting device 1 from below on the side where the second lighting fixture 30 is not provided in the short-side direction (Y-axis direction) of the lighting device 1. Also, the second direction in FIG. 2 is the direction of viewing the lighting device 1 from below on the side where the second lighting fixture 30 is provided in the short-side direction (Y-axis direction) of the lighting device 1.

[0012] <Lighting device 1> The lighting device 1 is installed at a position where it can illuminate the lighting space and illuminates the lighting space. The lighting space refers to the space below where the lighting device 1 is installed, such as the space in a living area, a warehouse, a building or a public facility, a shared space such as an elevator or a corridor, or the space inside a vehicle such as a train or a ship. In Embodiment 1, the lighting device 1 is shown by taking a so-called V-shaped (150 mm width) lighting device 1 as an example. Note that the lighting device 1 in Embodiment 1 is illustrated and described by taking a so-called V-shaped type of lighting device as an example, but the lighting device 1 is not limited to the V-shaped type of lighting device 1. The lighting device 1 can adopt other forms, such as a so-called hat type, a one-sided reflection hat type, a trough type, etc.

[0013] The lighting device 1 includes a long lighting fixture 10 attached to an attachment portion 9 such as a ceiling or a wall, a long first lighting tool 20 detachably attached to the lighting fixture 10, and a second lighting tool 30 provided on the lighting fixture 10. In the lighting device 1, the first lighting tool 20 and the second lighting tool 30 are arranged side by side in the short side direction (Y-axis direction). Here, when a certain direction is defined as the first direction and a direction perpendicular to the first direction is defined as the second direction on a plane parallel to the attachment portion 9, as shown in FIGS. 3 to 7, in the first direction and the second direction, the maximum dimension of the second lighting tool 30 is smaller than the maximum dimension of the first lighting tool 20. The lighting fixture 10 is formed in a long shape, the first direction is the longitudinal direction (X-axis direction) of the lighting fixture 10, and the second direction is the short side direction (Y-axis direction) of the lighting fixture 10.

[0014] [Lighting fixture 10] As shown in FIG. 8, the lighting fixture 10 has an instrument main body portion 11, an instrument end portion 12, an instrument side coupler 13, an instrument side terminal block 14, an instrument side fixture 15, and an instrument side power line 16.

[0015] (Instrument main body portion 11) The appliance main body 11 is a housing that constitutes the outer shell of the lighting appliance 10. The appliance main body 11 is attached to the attachment portion 9 using a fixture such as a bolt. The appliance main body 11 includes an appliance bottom portion 110, an appliance side portion 111, an appliance inclined portion 114, and an appliance side edge portion 117. The appliance bottom portion 110, the appliance side portion 111, the appliance inclined portion 114, and the appliance side edge portion 117 are integrally formed by bending a metal plate material, for example. However, the appliance main body 11 is not limited to being formed by bending a metal plate material, and may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Further, the appliance bottom portion 110, the appliance side portion 111, the appliance inclined portion 114, and the appliance side edge portion 117 are not limited to being integrally formed, and may be formed separately as long as these members are securely fixed to each other.

[0016] The appliance bottom portion 110 is a plate-shaped member formed in a long and rectangular shape along the longitudinal direction (X-axis direction) of the appliance main body 11. The appliance side portion 111 is a pair of side walls rising from side members at both ends in the short side direction (Y-axis direction) of the appliance bottom portion 110, and is a plate-shaped member formed in a long and rectangular shape along the longitudinal direction (X-axis direction) of the appliance main body 11. As shown in FIG. 8, screw holes 113 are formed in the appliance bottom portion 110. As shown in FIG. 6, a second lighting fixture fixing tool 80 such as a screw or a rivet for fixing the second lighting fixture 30 to the appliance main body 11 is attached to the screw holes 113. As shown in FIG. 8, wire passing holes 112 are formed in the appliance side portion 111. The wire passing holes 112 are through holes formed in the appliance side portion 111. A power supply line that serves as a path for supplying power from the power supply portion 23, which is a lighting device of the first lighting fixture 20 described later, to the second lighting fixture 30 is inserted into the wire passing holes 112.

[0017] The appliance main body portion 11 forms a housing portion 18 that is formed in a concave shape by the appliance bottom portion 110, the appliance side portion 111, and an end plate 120 of an appliance end portion 12 described later. The housing portion 18 is a first space formed in the lighting appliance 10. The housing portion 18 has a bottom surface portion constituted by the appliance bottom portion 110, a side wall portion extending in the longitudinal direction constituted by the appliance side portion 111, and a side wall portion extending in the short direction constituted by the end plate 120. A first lighting fixture 20 is detachably attached to the housing portion 18, and a part of the first lighting fixture 20 is accommodated therein. That is, the first space is a housing space for the first lighting fixture 20.

[0018] The appliance inclined portions 114 are inclined walls provided in pairs on both sides of the housing portion 18 in the short direction (Y-axis direction) of the appliance main body portion 11. The appliance inclined portions 114 are formed so as to be inclined with respect to the mounting surface of the mounted portion 9. The pair of appliance inclined portions 114 are formed from the respective longitudinal sides of the appliance side edge portions 117 upward (Z1 side) and away from the housing portion 18. That is, the appliance inclined portions 114 are inclined such that the distance between the ends on the mounted portion 9 side is wider than the distance between the ends on the lighting space side in the vertical direction (Z-axis direction) of the appliance main body portion 11. In the lighting device 1, the housing portion 18 is formed between the pair of appliance inclined portions 114 in the short direction (Y-axis direction). The appliance inclined portions 114 form inclined surfaces, and the light emitted from the light source may be reflected toward the lighting space.

[0019] The appliance side edge portions 117 are edge portions of the housing portion 18 provided in pairs on both sides of the housing portion 18 in the short direction (Y-axis direction) of the appliance main body portion 11. The appliance side edge portions 117 are formed between the appliance side portion 111 and the appliance inclined portions 114. The appliance side edge portions 117 are formed at the tip portions of the appliance side portion 111 on the side opposite to the appliance bottom portion 110, and are formed in pairs so as to be separated from each other from the respective tip portions of the pair of appliance side portions 111. The appliance side edge portions 117 constitute the lower surface portion of the appliance main body portion 11.

[0020] On one side in the short side direction (Y-axis direction) of the instrument main body 11 with the accommodation part 18 interposed therebetween, an instrument inclined part 114 and an instrument side edge part 117 are formed, and an instrument through part 115 which is a through hole is formed in them. The instrument through part 115 is formed at the central part in the longitudinal direction (X-axis direction) of the instrument main body 11. As shown in FIG. 4, the instrument through part 115 is formed in a rectangular shape in the instrument main body 11 in a plan view when the attached part 9 is viewed from the illumination space side. A second lighting fixture 30 described later is inserted into this instrument through part 115, and the second lighting fixture 30 is arranged in the instrument through part 115 so as to protrude from the instrument inclined part 114 and the instrument side edge part 117 to the illumination space side. Therefore, the instrument through part 115 only needs to be formed corresponding to the shape and dimensions of the outer part 42 of the second lighting fixture 30 described later, and is not limited to the shape formed in a rectangular shape in a plan view when the attached part 9 is viewed from the illumination space side. The instrument through part 115 functions as an insertion port or a detachment port of the outer part 42.

[0021] (Instrument end 12) The instrument ends 12 are arranged at both ends in the longitudinal direction (X-axis direction) of the instrument main body 11. The instrument ends 12 have end plates 120 that cover the ends in the longitudinal direction (X-axis direction) of the instrument main body 11. The end plates 120 constitute side walls of the instrument main body 11 that extend in the short side direction (Y-axis direction) of the instrument main body 11. Then, the end plates 120 of the instrument ends 12 are arranged at the ends in the longitudinal direction (X-axis direction) of the instrument inclined part 114 and the instrument side edge part 117, and together with the instrument inclined part 114 and the instrument side edge part 117 of the instrument main body 11, constitute the outer shell of the lighting fixture 10.

[0022] The end plate 120 is formed with a knockout portion 121 that forms a through hole in the end plate 120 by removing a part of the wall portion constituting the end plate 120. The knockout portion 121 is a portion where knockout processing has been performed on the end plate 120. For example, by hitting or cutting, a hole can be easily made on-site. The knockout portion 121 has, for example, a plurality of through holes continuously formed like perforations along the periphery of the wall cut from the end plate 120. The form of the knockout processing is not limited to a plurality of continuous through holes, and the end plate 120 may be subjected to knockout processing in other forms. Also, the knockout portion 121 is removably provided from the end plate 120 by knockout processing, but the knockout portion 121 may be provided so that it can be removed from the end plate 120 by engagement with claws or adhesion other than knockout processing. For example, an electric wire for feed wiring is inserted through the through hole formed by the knockout portion 121.

[0023] (Appliance-side coupler 13 and appliance-side fixture 15) The appliance-side coupler 13 constitutes a connection mechanism for detachably connecting the first lighting fixture 20 to the lighting appliance 10. The appliance-side coupler 13 holds the first lighting fixture 20 in a state where the first lighting fixture 20 is attached to the lighting appliance 10. The appliance-side coupler 13 is a leaf spring and is formed of an elastic member such as a stainless steel material or a spring steel material. Note that the appliance-side coupler 13 may be formed by bending an elastic material of a plate material or an elastic material of a wire material. The appliance-side coupler 13 engages with a lighting-fixture-side coupler (not shown) of the first lighting fixture 20. As shown in FIG. 8, two appliance-side couplers 13 are attached to the appliance bottom 110 and are arranged along the longitudinal direction (X-axis direction) of the appliance bottom 110 that constitutes the housing portion 18. The appliance-side couplers 13 are arranged on the end side with respect to the central portion in the longitudinal direction (X-axis direction) of the appliance bottom 110. Also, the paired appliance-side couplers 13 are arranged on the appliance bottom 110 such that the tips of the springs face opposite directions. The appliance-side fixture 15 is a member for fixing the appliance-side coupler 13 to the appliance main body portion 11 and is, for example, a screw.

[0024] Appliance-side terminal block 14 The appliance-side terminal block 14 is connected to an external power source (not shown) drawn into the appliance main body 11 from the outside, and supplies the power supplied from the commercial power source to the first lighting fixture 20. The appliance-side terminal block 14 is attached to the appliance bottom 110 of the appliance main body 11 and fixed to the appliance bottom 110. An external electric wire (not shown) for receiving power supply from the external power source is connected to the appliance-side terminal block 14. Further, an appliance-side power line 16 for supplying power to the power supply unit 23 of the first lighting fixture 20 described later is connected to the appliance-side terminal block 14.

[0025] Appliance-side power line 16 The appliance-side power line 16 has a wire portion 160 that connects the appliance main body 11 and the first lighting fixture 20. One end of the wire portion 160 of the appliance-side power line 16 is connected to the appliance-side terminal block 14, and a connector 161 for connecting to the power supply-side power line (not shown) of the first lighting fixture 20 is provided at the other end.

[0026] [First lighting fixture 20] FIG. 9 is a cross-sectional view taken along line A-A of the lighting device 1 in FIG. 4. The configuration of each part of the first lighting fixture 20 will be described with reference to FIGS. 1, 4, 8, and 9. The first lighting fixture 20 is a common lighting fixture, and power is normally supplied from the outside of the lighting device 1 to the first light source unit 21 serving as a light source via the appliance-side terminal block 14. Here, the normal time means a state in which power such as commercial power is supplied to the lighting device 1 from the outside of the lighting device 1. Further, the emergency time means a state in which power is not supplied to the lighting device 1 from the outside of the lighting device 1 for some reason such as a power failure. When the lighting device 1 is in the lighting state during normal times, the lighting device 1 irradiates light from the first lighting fixture 20 and illuminates the lighting space.

[0027] As shown in FIG. 4, the first lighting fixture 20 constitutes the lighting device 1 when attached to the lighting fixture 10. The first lighting fixture 20 is formed in a long shape and is mounted on and used with the fixture main body 11 of the lighting fixture 10. A part of the first lighting fixture 20 is accommodated in the accommodation part 18 of the fixture main body 11, and it is detachably attached to the fixture main body 11. As shown in FIG. 9, the first lighting fixture 20 includes a first light source part 21, a first light-transmitting part 22, a power supply part 23, and a support part 24. Further, the first lighting fixture 20 is provided with a lighting-fixture-side connecting part (not shown) that engages with the fixture-side connector 13. This lighting-fixture-side connecting part constitutes a connecting mechanism for detachably connecting the first lighting fixture 20 to the fixture main body 11 together with the fixture-side connector 13.

[0028] (First light source part 21) The first light source part 21 is a light source that emits light. The first light source part 21 is lit by the first lighting power supplied from the first lighting device. The first lighting device is the power supply part 23 described later. The first light source part 21 is disposed in the space surrounded by the first light-transmitting part 22 and the support part 24 in a state where the first light-transmitting part 22 is attached to the support part 24. The first light source part 21 is formed in a long shape and, as shown in FIG. 9, includes a first light source element 211 and a first light source substrate 210 on which the first light source element 211 is mounted. Further, at one end of the first light source part 21 in the longitudinal direction (X-axis direction), a wire (not shown) for electrically connecting to the power supply part 23 described later is connected.

[0029] The first light source element 211 emits light upon receiving power supply. In the present embodiment, a light emitting diode (hereinafter referred to as LED) element is used as the first light source element 211. A plurality of first light source elements 211 are arranged in a row along the longitudinal direction (X-axis direction) on the mounting surface of the first light source substrate 210. Note that the arrangement of the first light source elements 211 on the first light source substrate 210 is not limited to the mode of being arranged in a row. For example, they may be arranged in a plurality of rows, or may be arranged in a staggered pattern or the like. Further, instead of an LED, for example, a solid state laser, a semiconductor laser, an organic EL (Electro Luminescence), an inorganic EL, or the like may be used as the first light source element 211. The first light source substrate 210 is formed in a long shape and is a plate-like member extending in the longitudinal direction (X-axis direction) of the first lighting fixture 20. For the first light source substrate 210, for example, a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper-epoxy substrate (FR-3), a paper-phenol substrate (XPC), a metal base substrate, or the like is used.

[0030] (The first light transmissive portion 22) The first light transmissive portion 22 allows the light emitted by the first light source unit 21 to enter, transmits this light, and irradiates it. It is formed of a light transmissive material that transmits at least visible light. The material of the first light transmissive portion 22 may be, for example, an opalescent resin material or a resin material mixed with a diffusing material. The first light transmissive portion 22 can be formed using, for example, a resin material such as polycarbonate or acrylic. The first light transmissive portion 22 is formed in a long shape so as to cover the first light source unit 21 and is attached to the side end of the support portion 24 described later. The first light transmissive portion 22 has a main portion 220, an attachment portion 221, and a lid portion 226.

[0031] The main part 220 is the first light-emitting part, covers the first light source part 21, and transmits the light emitted from the first light source part 21. The main part 220 is a part of the first light-transmitting part 22. In a state where the first light-transmitting part 22 is attached to the support part 24, it covers the first light source part 21 and faces the first light source part 21. Therefore, the main part 220 is a part in the first light-transmitting part 22 where the light emitted by the first light source part 21 enters and is transmitted and irradiated. The light emitted from the first light source part 21 enters from the first incident part 222 that constitutes the inner surface part of the first light-transmitting part 22, and is emitted outward from the first exit part 223 that constitutes the outer surface part of the first light-transmitting part 22. The main part 220 has a lower end portion formed in an arc shape as shown in FIG. 9 in a vertical cross section with respect to the longitudinal direction (X-axis direction). The main part 220 is not limited to the shape in which the lower end portion is formed in an arc shape as shown in FIG. 9 in a vertical cross section with respect to the longitudinal direction (X-axis direction), and the cross-sectional shape of the main part 220 may be other shapes. For example, the main part 220 may have a linear part or a curved part in a vertical cross section with respect to the longitudinal direction (X-axis direction), or may have both a linear part and a curved part. The surface of the main part 220 may be a planar shape formed from one plane or a polyhedral shape formed from a plurality of planes, or may be a shape formed from a single or a plurality of curved surfaces.

[0032] The attachment portion 221 is a portion that engages with the support portion 24 in the first light-transmitting portion 22. The attachment portion 221 is provided on the end side with respect to the central portion in the short-side direction (Y-axis direction) of the first light-transmitting portion 22. The attachment portions 221 are provided in pairs in the short-side direction (Y-axis direction) of the first light-transmitting portion 22. The attachment portion 221 is formed so as to protrude upward from the main portion 220, and is formed so as to extend in the vertical direction (Z-axis direction) in a state where the first lighting fixture 20 is attached to the lighting fixture 10. In the vertical direction (Z-axis direction), one end of the attachment portion 221 is continuous with the main portion 220, and the other end of the attachment portion 221 is bent in a hook shape toward the central side in the short-side direction (Y-axis direction). The hook-shaped portion formed at the end of the attachment portion 221 is hooked on the standing portion 241, whereby the first light-transmitting portion 22 engages with the support portion 24 and is attached to the support portion 24. Note that the attachment portion 221 may have another shape as long as it has a structure that engages with the standing portion 241. Also, the attachment portions 221 may be formed continuously along the longitudinal direction (X-axis direction) of the first light-transmitting portion 22, or may be formed at intervals along the longitudinal direction (X-axis direction) of the first light-transmitting portion 22.

[0033] The lid portion 226 is disposed at the end in the longitudinal direction (X-axis direction) of the first light-transmitting portion 22, closes the opening formed at the end in the longitudinal direction (X-axis direction) of the first light-transmitting portion 22, and distributes the light emitted by the first light source portion 21 in the longitudinal direction (X-axis direction). The lid portion 226 is formed of a material having permeability and diffusibility such as acrylic resin, and is joined to the main portion 220 by joining means such as adhesion with an adhesive or heat welding. In the first embodiment, the lid portion 226 has a separate configuration from the main portion 220 and the attachment portion 221, but the lid portion 226 may be integrally formed with the main portion 220 and the attachment portion 221. Note that the lid portion 226 is not limited to a configuration that distributes the light emitted by the first light source portion 21 in the longitudinal direction (X-axis direction), and may be a configuration that blocks the light emitted by the first light source portion 21.

[0034] (Power supply unit 23) The power supply unit 23 supplies the power supplied from the outside via the appliance-side terminal block 14 to the first light source unit 21 to turn on the first light source element 211. The power supply unit 23 is the first lighting device of the lighting device 1. As shown in FIG. 9, the power supply unit 23 is fixed by a power supply-side fixture (not shown) to the surface of the support unit 24 on the side opposite to the surface on which the first light source unit 21 is attached. The power supply-side fixture is, for example, a screw, a screw and a nut, or a rivet or the like. The power supply unit 23 has a case 230 having a substantially rectangular parallelepiped shape, a power supply board housed inside the case 230, and power supply circuit components (not shown) mounted on the power supply board. Further, the power supply unit 23 has a power supply-side power line (not shown) connected to the first light source unit 21.

[0035] (Support unit 24) The support unit 24 is a member provided with a lighting fixture-side coupler (not shown) for attaching the first lighting fixture 20 to the lighting device 10, and is also a member to which the first light source unit 21, the first light-transmitting unit 22, and the power supply unit 23 are attached. As shown in FIG. 9, the support unit 24 has a base portion 240 formed in a long and rectangular plate shape along the longitudinal direction (X-axis direction), and standing portions 241 rising from both ends in the short-side direction (Y-axis direction) of the base portion 240. Further, the support unit 24 has a power supply unit arrangement portion 242 formed in a plate shape protruding toward the rising side of the standing portion 241 with respect to the base portion 240. The support unit 24 is formed of a reflective member, but a reflective paint may be used, or a reflective member may be disposed on a base material.

[0036] The base 240 is formed in a long plate shape as described above. On one plate surface side, a power supply unit 23 and a lighting fixture side coupler (not shown) are arranged. On the wall portion of the other plate surface side, a first light source unit 21 is attached. The standing portion 241 is formed to extend upward (in the Z1 direction) from the base 240 in a state where the first lighting fixture 20 is attached to the lighting fixture 10. Further, the standing portion 241 is formed along the longitudinal direction (X-axis direction) of the base 240. In the vertical direction (Z-axis direction), one end of the standing portion 241 is continuous with the base 240, and the other end of the standing portion 241 has a rounded edge and is bent in an arc shape toward the center side in the short-side direction (Y-axis direction). By engaging the attachment portion 221 of the first light-transmitting portion 22 with the end portion of the standing portion 241, the first light-transmitting portion 22 is engaged with the support portion 24 and attached to the support portion 24. The power supply unit arrangement portion 242 is a plate-shaped portion located above (on the Z1 side) the base 240 in a state where the first lighting fixture 20 is attached to the lighting fixture 10. That is, the base 240 and the virtual extension plane of the power supply unit arrangement portion 242 are parallel. The power supply unit arrangement portion 242 is formed at the center portion of the base 240 in the short-side direction (Y-axis direction) of the base 240. The power supply unit 23 is arranged in the power supply unit arrangement portion 242.

[0037] [Second lighting fixture 30] With reference to FIGS. 1 to 9, the outline of the second lighting fixture 30 will be described. The second lighting fixture 30 is an emergency lighting fixture, and for example, in an emergency where power is not supplied to the lighting device 1 from the outside of the lighting device 1 for some reason such as a power outage, it irradiates light to illuminate the lighting space.

[0038] The second lighting fixture 30 is attached to the lighting fixture 10 and constitutes the lighting device 1 together with the first lighting fixture 20. The second lighting fixture 30 is disposed outside the housing portion 18 in the short side direction (Y-axis direction) of the lighting fixture 10. The second lighting fixture 30 is formed in a long shape and is attached along the long side direction (X-axis direction) of the lighting fixture 10. Further, the second lighting fixture 30 is provided at the central portion in the long side direction (X-axis direction) of the lighting fixture 10. The second lighting fixture 30 is arranged side by side with the first lighting fixture 20 in the short side direction (Y-axis direction) of the lighting fixture 10. And the second lighting fixture 30 is arranged such that the longitudinal direction of the first lighting fixture 20 and the longitudinal direction of the second lighting fixture 30 are parallel in a plan view when the attached portion 9 is viewed from the lighting space side. The second lighting fixture 30 is provided so as to protrude from the fixture through-hole 115 formed in the fixture inclined portion 114.

[0039] FIG. 10 is a third-direction perspective view of the second lighting fixture 30 in FIG. 1. FIG. 11 is an exploded third-direction perspective view of the second lighting fixture 30 in FIG. 10. FIG. 12 is a fourth-direction perspective view of the second lighting fixture 30 in FIG. 10. FIG. 13 is an exploded fourth-direction perspective view of the second lighting fixture 30 in FIG. 12. FIG. 14 is an exploded perspective view of the second light source unit 31 in FIG. 13. The configuration of the second lighting fixture 30 will be described in more detail with reference to FIGS. 9 to 14. Note that the third direction in FIGS. 10 and 11 is a perspective view of the second lighting fixture 30 when looking at the lighting device 1 from the outside to the inside and from the lighting space side to the attached portion 9 side in the short-side direction (Y-axis direction) of the lighting device 1. Also, the fourth direction in FIGS. 12 and 13 is a perspective view of the second lighting fixture 30 when looking at the lighting device 1 from the inside to the outside and from the lighting space side to the attached portion 9 side in the short-side direction (Y-axis direction) of the lighting device 1. Also, in FIGS. 10 to 14, the up-down direction (Z-axis direction) on the paper surface for explaining the second lighting fixture 30 is shown opposite to the up-down direction (Z-axis direction) on the paper surface of the lighting device 1 in FIG. 1. Also, in FIGS. 11 and 13, the second lighting fixture 30 in a state where the battery 70 is removed is shown. As shown in FIGS. 13 to 15, the second lighting fixture 30 includes a second light source unit 31, a control unit 34, an operation unit 36, an insulating unit 38, a housing unit 40, a holding member 50, a battery 70, a second lighting fixture fixture 80, and a suspension cord 60.

[0040] (The second light source unit 31) The second light source unit 31 is a light source for an emergency and emits light. The second light source unit 31 is lit by second lighting power supplied from a second lighting device. The second lighting device is the control unit 34 described later. As shown in FIGS. 10 and 12, the second light source unit 31 is housed in the housing unit 40 with a part of its configuration such as the second light-transmitting portion 312 exposed from the housing unit 40. The second light source unit 31 is disposed between the pedestal portion 44 and the outer shell portion 42 in a state where the outer shell portion 42 is attached to the pedestal portion 44. As shown in FIG. 14, the second light source unit 31 includes a second light source substrate 310, a second light-emitting element 311, a second light-transmitting portion 312, a holding portion 317, and a second light source unit fixture 327.

[0041] The second light source substrate 310 is a plate-shaped member on which the second light-emitting element 311 is mounted. For the second light source substrate 310, for example, a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper-epoxy substrate (FR-3), a paper-phenol substrate (XPC), a metal base substrate, etc. are used.

[0042] The second light-emitting element 311 emits light when supplied with power. In the present embodiment, a light-emitting diode (hereinafter referred to as an LED) element is used as the second light-emitting element 311. A plurality of second light-emitting elements 311 are arranged in two along the longitudinal direction (X-axis direction) on the mounting surface of the second light source substrate 310. Note that the number of the second light-emitting elements 311 is not limited to two, and may be one or three or more. Note that the arrangement of the second light-emitting elements 311 on the second light source substrate 310 is not limited to the mode of being arranged in the longitudinal direction (X-axis direction), and for example, it may be arranged in the short-side direction (Y-axis direction), or may be arranged obliquely with respect to the longitudinal direction or the short-side direction. Instead of the LED, for example, a solid-state laser, a semiconductor laser, an organic EL (Electro Luminescence), an inorganic EL, etc. may be used as the second light-emitting element 311.

[0043] The second light-transmitting portion 312 allows the light emitted by the second light-emitting element 311 to enter and transmits and irradiates this light, and is formed of a light-transmitting material that transmits at least visible light. The second light-transmitting portion 312 can be formed using, for example, a resin material or a glass material. The second light-transmitting portion 312 is formed in an oval shape. The second light-transmitting portion 312 has two lens portions 313 and a mounting portion 316 that forms the edge of the second light-transmitting portion 312.

[0044] The lens unit 313 is a second light-emitting unit that covers the second light source unit 31 and transmits the light emitted from the second light source unit 31. The lens unit 313 also controls the light distribution of the light emitted from the second light-emitting element 311. In a state where the second light-transmitting part 312 is attached to the holding part 317, the lens unit 313 covers the second light-emitting element 311 as shown in FIG. 9. Here, the dotted line Lt1 shown in FIG. 9 is a line comparing the position of the tip of the irradiation side of the lens unit 313 with the position of the tip of the irradiation side of the main part 220 of the first light-transmitting part 22 constituting the first lighting fixture 20. Also, the dotted line Lt2 is a line comparing the attachment position of the lens unit 313 with the attachment position of the main part 220 of the first light-transmitting part 22 constituting the first lighting fixture 20. As can be understood from the dotted line Lt2, in the lighting device 1, the installation position of the lens unit 313 is arranged closer to the lighting space side than the installation position of the main part 220 of the first lighting fixture 20. That is, with respect to the installation surface of the attached part 9, the lens unit 313 is arranged at a position higher than the main part 220. Also, as can be understood from the dotted line Lt1, in the lighting device 1, the distance between the tip of the irradiation side of the lens unit 313 and the installation surface of the attached part 9 is substantially equal to the distance between the tip of the irradiation side of the main part 220 of the first lighting fixture 20 and the installation surface of the attached part 9. Note that in the lighting device 1, it is sufficient that a partition is provided between the main part 220 of the first lighting fixture 20 and the lens unit 313 of the second lighting fixture 30, and the positional relationship between the lens unit 313 and the main part 220 is not limited to the above-described positional relationship. The second incident part 314 constituting the inner surface of the lens unit 313 faces the second light-emitting element 311 as shown in FIG. 9. The light emitted from the second light-emitting element 311 enters from the second incident part 314 of the lens unit 313 and is emitted outward from the second exit part 315 constituting the outer surface of the lens unit 313. Therefore, the second exit part 315 of the lens unit 313 becomes the light-emitting part of the second light source unit 31. The attachment part 316 is a flange part formed around the lens unit 313 as shown in FIG. 14. The attachment part 316 is guided by the mounting guide 321 of the holding part 317 when attaching the second light-transmitting part 312 to the holding part 317 and engages with the holding projection 320 of the holding part 317.

[0045] The holding part 317 is for fixing the second light source substrate 310 and the lens part 313 to a pedestal part 44 which will be described later. The holding part 317 has a main holding part 318, a sub-holding part 324, and a connecting part 326.

[0046] The main holding part 318 is formed in a plate shape and serves as a pedestal on which a second light-transmitting part 312 functioning as a lens is mounted. The main holding part 318 has holding protrusions 320 for locking the mounted second light-transmitting part 312. The holding protrusions 320 are provided on side walls 318a rising from the main holding part 318 and are projecting parts projecting inward from the side walls 318a. The holding protrusions 320 lock the second light-transmitting part 312 by sandwiching the second light-transmitting part 312 together with the main holding part 318 from the vertical direction (Z-axis direction). The second light-transmitting part 312 is arranged in a lens holding part 319 of the main holding part 318 by the holding protrusions 320. The holding part 317 forms a mounting guide 321 between the lens holding part 319 and the holding protrusions 320. The mounting guide 321 is a groove formed between the lens holding part 319 and the holding protrusions 320. The mounting guide 321 fits with a mounting part 316 of the second light-transmitting part 312 when the second light-transmitting part 312 is attached to the holding part 317 and guides the slide of the mounted second light-transmitting part 312. A through hole 322 is formed in the main holding part 318. The through hole 322 is formed so as to be located above the mounting range of the second light-emitting element 311. The second light-transmitting part 312 attached to the main holding part 318 faces the lens part 313 and the second light-emitting element 311 through the through hole 322. Therefore, the light emitted from the second light-emitting element 311 reaches the lens part 313 through the through hole 322. Further, main part screw holes 323 are formed in the main holding part 318. The main part screw holes 323 are formed at two positions of the main holding part 318 with the lens holding part 319 in between. The main part screw holes 323 are holes through which a second light source part fixing tool 327 for fixing the second light source part 31 to the pedestal part 44 is inserted. Of the two main part screw holes 323 formed, one main part screw hole 323 overlaps with a sub-part screw hole 325 formed in the sub-holding part 324 and communicates with the sub-part screw hole 325.

[0047] The holding sub - part 324 is a plate - shaped member that locks the second light - transmitting part 312 arranged in the lens holding part 319 so that the second light - transmitting part 312 does not come out of the mounting guide 321. The holding sub - part 324 also fixes the second light - transmitting part 312 so that the second light - transmitting part 312 does not rattle within the mounting guide 321. A sub - part screw hole 325 is formed in the holding sub - part 324. The sub - part screw hole 325 is a hole through which a second light - source part fixing tool 327 for fixing the second light - source part 31 to the pedestal part 44 is inserted. The sub - part screw hole 325 overlaps with and communicates with the main - part screw hole 323 formed in the holding main - part 318.

[0048] The connecting part 326 is a part that connects the holding main - part 318 and the holding sub - part 324. In Embodiment 1, the connecting part 326 is configured such that the holding main - part 318 and the holding sub - part 324 are connected to form one component.

[0049] The second light - source part fixing tool 327 is a member that fixes the second light - source part 31 to the pedestal part 44. The second light - source part fixing tool 327 is, for example, a screw, a rivet, etc. The second light - source part fixing tool 327 is inserted through the main - part screw hole 323 formed in the holding main - part 318 and the sub - part screw hole 325 formed in the holding sub - part 324.

[0050] (Control unit 34) Next, the control unit 34 will be described with reference to FIG. 13. The control unit 34 lights the second light - source part 31 and performs control regarding the lighting of the second light - source part 31. The control unit 34 is the second lighting device of the lighting device 1. The control unit 34 also performs an inspection operation of the second light - source part 31 and controls the inspection operation of the second light - source part 31. The control unit 34 also has a battery 70 described later, stores electricity in the battery 70, and performs control regarding the electricity storage of the battery 70. For example, the control unit 34 performs control to switch between the electricity storage and the discharge of the battery 70.

[0051] The control unit 34 includes a control board 340 and control circuit components 341, and constitutes a power storage circuit, a discharge circuit, a control circuit, etc. The control board 340 is a plate-shaped member on which the control circuit components 341 are mounted. The control circuit components 341 include, for example, a storage device that stores a program, a CPU (Central Processing Unit) that executes the program, and the like.

[0052] The control unit 34 also includes a case 342 and a control unit fixture 346. The case 342 is formed in a box shape and houses the control board 340 inside. The case 342 includes a first case 343 and a second case 345. The first case 343 is a so-called bottom case, which is a container to which the control board 340 is attached. The first case 343 has a case bottom wall 343a formed in a plate shape and a pair of case side walls 343b that rise up from the case bottom wall 343a so as to face each other. A screw hole 344 is formed in the case bottom wall 343a of the first case 343. This screw hole 344 is a hole through which the control unit fixture 346 for fixing the control unit 34 to the pedestal portion 44 and the base portion 41 is inserted. The second case 345 is a so-called upper case, which is a lid that covers the upper part of the first case 343. That is, the second case 345 covers the upper part of the control board 340 attached to the first case 343 in the control unit 34. The control unit fixture 346 fixes the control unit 34 to the pedestal portion 44 and the base portion 41. The control unit fixture 346 is, for example, a screw, a nut, a rivet, or the like.

[0053] (Operation unit 36) Next, the operation unit 36 will be described with reference to FIG. 13. The operation unit 36 is used for inspecting the lighting device 1. The operation unit 36 includes an operation surface portion 360 and an operation unit fixture 363. The operation surface portion 360 includes an operation button 361 operated by an operator and an indicator lamp 362. The indicator lamp 362 indicates the energized state, for example, as a so-called indicator. The operation unit fixture 363 fixes the operation unit 36 to the pedestal portion 44. The operation unit fixture 363 is, for example, a screw, a nut, a rivet, or the like.

[0054] (Insulating portion 38) Next, the insulating portion 38 will be described with reference to FIG. 14. The insulating portion 38 is a plate-like member and is an insulating sheet. The insulating portion 38 is disposed between the second light source substrate 310 of the second light source portion 31 and the second light source portion mounting portion 440 of the pedestal portion 44 (to be described later) within the second lighting fixture 30. The insulating portion 38 electrically insulates the second light source substrate 310 of the second light source portion 31 and the second light source portion mounting portion 440 of the pedestal portion 44. An insulating portion screw hole 380 is formed in the insulating portion 38. The insulating portion screw holes 380 are formed at two locations. The insulating portion screw holes 380 are holes through which a second light source portion fixing tool 327 for fixing the second light source portion 31 to the pedestal portion 44 is inserted. When the holding main portion 318 of the second light source portion 31 is fixed to the second light source portion mounting portion 440 of the pedestal portion 44, the insulating portion 38 is also fixed to the second light source portion mounting portion 440 of the pedestal portion 44.

[0055] (Housing portion 40) Next, with reference to FIGS. 9 to 14, the housing portion 40 of the second lighting fixture 30 will be described. The housing portion 40 constitutes the outer shell of the second lighting fixture 30. As shown in FIGS. 10 and 11, the housing portion 40 is formed in a box shape by an outer shell portion 42 and a base portion 41, and forms a second space 45 inside as shown in FIG. 9. The second space 45 formed by the housing portion 40 houses the second light source portion 31, the control portion 34, the operation portion 36, and the insulating portion 38. Further, the housing portion 40 forms a second space 45 that houses the second light source portion 31 and the control portion 34 together with a lens portion 313 that covers the second light source portion 31 and transmits the light emitted from the second light source portion 31. As shown in FIGS. 10 and 12, the second lighting fixture 30 is covered with the housing portion 40 that houses the entire optical system such as the second light source portion 31, and the lens portion 313 and the outer shell portion fixing tool 432 are exposed, but neither protrudes outside the outer surface 420a of the housing portion 40. For this reason, the housing portion 40 serves as a partition between the first lighting fixture 20, which is a normal light source, and the second lighting fixture 30, which is an emergency light source. As shown in FIG. 13, the housing portion 40 includes a base portion 41 fixed to the lighting fixture 10, a pedestal portion 44 fixed to the base portion 41, and an outer shell portion 42 detachably attached to the pedestal portion 44.

[0056] The base 41 is a part that serves as a base for accommodating the second light source unit 31. The base 41 has a base bottom 410, a base side portion 414, and a base overhanging portion 415. The base bottom 410 is a member formed in a rectangular plate shape. A pedestal portion 44 and a holding member 50 (to be described later) are attached to the base bottom 410. As shown in FIGS. 11 and 13, a holding member fixing portion 411, a screw hole 412, and a mounting hole 413 are formed in the base bottom 410 as shown in FIG. 6.

[0057] The holding member fixing portion 411 is a bridge-shaped raised portion. That is, the holding member fixing portion 411 is a plate material raised from the base bottom 410, and both ends are continuously formed with the base bottom 410. The fixing portion 51 of the holding member 50 is inserted into the holding member fixing portion 411. The screw hole 412 is a hole through which a fixture such as a screw for attaching the control unit 34 and the pedestal portion 44 to the base bottom 410 is inserted. The mounting hole 413 is a hole through which a holding member fixture 54 for fixing the holding member 50 to the base bottom 410 is inserted.

[0058] When the outer shell portion 42 is attached to the base 41, the base side portion 414 guides the movement of the outer shell portion 42. The base side portion 414 is a side wall that rises from the edge of the base bottom 410. The base side portion 414 is provided along the longitudinal direction (X-axis direction) of the long base bottom 410 and is arranged at both ends in the longitudinal direction (X-axis direction) of the base bottom 410. That is, the base side portion 414 is formed so as to be arranged on three adjacent sides of the rectangular base bottom 410.

[0059] The base protruding portion 415 is an attachment portion for attaching the second lighting fixture 30 to the fixture bottom 110 of the lighting fixture 10. The base protruding portion 415 is continuously connected to the base bottom 410 and is integrally formed therewith, and is a plate member provided so as to extend from the base bottom 410. The base protruding portion 415 is provided on one side where the base side portion 414 of the base bottom 410 is not provided. As shown in FIG. 13, the base protruding portion 415 extends to the opposite side via the pedestal portion 44 with respect to the base side portion 414 of the portion provided along the longitudinal direction (X-axis direction) of the base bottom 410. When the second lighting fixture 30 is disposed on the lighting fixture 10, the base protruding portion 415 faces and abuts against the fixture bottom 110. A screw hole 416 is formed in the base protruding portion 415. The screw hole 416 is a hole through which a second lighting fixture fixing tool 80, which will be described later, for fixing the second lighting fixture 30 to the fixture bottom 110 of the lighting fixture 10 is inserted.

[0060] The outer shell portion 42 constitutes the outer shell of the second lighting fixture 30 and forms the design portion on the appearance of the second lighting fixture 30. The outer shell portion 42 is formed using a light-shielding material. Also, the outer shell portion 42 is formed using a flame-retardant or non-combustible material. Further, the outer shell portion 42 is formed using a heat-conductive material. As shown in FIGS. 11 and 13, the outer shell portion 42 is formed in a rectangular prism-shaped box form with an opening 42a formed on one surface. The outer shell portion 42 is detachably attached to the base portion 41 in the second lighting fixture 30. More specifically, the outer shell portion 42 is attached to the pedestal portion 44 so as to cover the base portion 41. By attaching the outer shell portion 42 to the pedestal portion 44, the outer shell portion 42 is attached to the base portion 41 via the pedestal portion 44. By attaching the outer shell portion 42 to the pedestal portion 44, the outer shell portion 42 covers and houses inside the second light source portion 31 excluding the exposed portion, the control portion 34, the operation portion 36 excluding the exposed portion, and the insulating portion 38. That is, the outer shell portion 42 houses the second light source portion 31 and the lens portion 313 inside with the lens portion 313, which is the second light-emitting portion, exposed. The outer shell portion 42 forms a second space 45 in which the second light source portion 31 is housed together with the lens portion 313, which is the second light-emitting portion. Also, by attaching the outer shell portion 42 to the pedestal portion 44, the outer shell portion 42 covers and houses inside the base portion 41 excluding the base overhang portion 415, the pedestal portion 44, the battery 70, and the holding member 50. The outer shell portion 42 includes an outer shell main portion 420, an outer shell longitudinal side portion 427, an outer shell short side portion 431, and an outer shell portion fixture 432.

[0061] The outer shell main portion 420 is a wall located on the surface facing the opening 42a formed in the outer shell portion 42. Also, the outer shell main portion 420 is a plate-shaped wall formed in a rectangular and elongated shape. The outer shell main portion 420 faces the base bottom portion 410 in a state where the outer shell portion 42 is attached to the pedestal portion 44. The outer shell main portion 420 constitutes a part of the lower surface portion of the lighting device 1 in a state where the second lighting fixture 30 is attached to the lighting fixture 10. The outer shell main portion 420 has a second light-transmitting member arrangement portion 421 and an operation portion arrangement portion 425.

[0062] The second light-transmitting member arrangement portion 421 is a portion in the outer main portion 420 that faces the second light-transmitting portion 312 disposed within the housing portion 40. That is, in the second lighting fixture 30, the second light-transmitting portion 312 is disposed below the second light-transmitting member arrangement portion 421. The second light-transmitting member arrangement portion 421 has a stepped portion 422.

[0063] The stepped portion 422 is a flat wall portion formed such that the wall of the outer main portion 420 is recessed inward. Therefore, as shown in FIG. 9, the outer portion 42 is recessed inward at the stepped portion 422. As shown in FIGS. 11 and 13, a step is formed between the stepped portion 422 and the outer surface 420a of the outer main portion 420. In the stepped portion 422, a light-transmitting portion through-hole 423 and a screw hole 424 are formed. The light-transmitting portion through-hole 423 is a through-hole formed in the stepped portion 422. The light-transmitting portion through-hole 423 is formed at a position facing the lens portion 313, which is the second light-emitting portion, when the outer portion 42 is attached to the pedestal portion 44. Therefore, in a state where the outer portion 42 is attached to the pedestal portion 44, as shown in FIGS. 9 and 10, the lens portion 313 of the second light-transmitting portion 312 disposed inside the housing portion 40 is exposed to the outside from the stepped portion 422 through the light-transmitting portion through-hole 423. Further, in a state where the outer portion 42 is attached to the pedestal portion 44, as shown in FIGS. 9 and 10, a part of the lens portion 313 of the second light-transmitting portion 312 disposed inside the housing portion 40 protrudes to the outside from the stepped portion 422 through the light-transmitting portion through-hole 423. The screw holes 424 are formed at two locations in the stepped portion 422 with the light-transmitting portion through-hole 423 in between. The screw holes 424 are holes through which an outer portion fixing tool 432 for fixing the outer portion 42 to the pedestal portion 44 is inserted.

[0064] The operation unit arrangement part 425 is the part in the outer main part 420 that faces the operation unit 36 arranged inside the housing part 40. That is, the second lighting fixture 30 has the operation unit 36 arranged below the operation unit arrangement part 425. An operation through-hole 426 is formed in the operation unit arrangement part 425. The operation through-hole 426 is a through-hole formed in the operation unit arrangement part 425. In the state where the outer part 42 is attached to the pedestal part 44, as shown in FIGS. 10 and 12, the operation surface part 360 of the operation unit 36 arranged inside the housing part 40 is exposed from the wall surface of the operation unit arrangement part 425 through the operation through-hole 426. By the operation surface part 360 being exposed on the lower surface part of the lighting device 1, the operator can operate the operation buttons 361 of the operation unit 36 and can recognize the lighting and extinguishing of the indicator lights 362.

[0065] As shown in FIGS. 11 to 13, the outer longitudinal side part 427 constitutes the side wall of the outer part 42. The outer longitudinal side part 427 is formed so as to rise from the side of the outer main part 420 along the longitudinal direction (X-axis direction) of the outer main part 420. The outer longitudinal side part 427 has an outer outer part 428 and an outer inner part 429. The outer outer part 428 and the outer inner part 429 are formed to face each other. In the state where the outer part 42 is attached to the pedestal part 44, the outer outer part 428 faces the base side part 414 of the part formed to extend in the longitudinal direction (X-axis direction). In the state where the outer part 42 is attached to the pedestal part 44, the outer inner part 429 is arranged on the projecting side of the base projecting part 415. As shown in FIG. 9, in the state where the second lighting fixture 30 is attached to the lighting fixture 10, the outer outer part 428 constitutes the outer side wall in the short-side direction (Y-axis direction) of the lighting device 1 and the second lighting fixture 30. Also, in the short-side direction (Y-axis direction) of the lighting device 1, the outer inner part 429 constitutes the inner side wall of the second lighting fixture 30 with respect to the outer outer part 428.

[0066] The inner outer part 429 is arranged along the appliance side part 111 of the lighting appliance 10 and abuts against the appliance side part 111 when the second lighting fixture 30 is attached to the lighting appliance 10. As shown in FIG. 9, the inner outer part 429 functions as a partition wall that separates the housing part 18 of the lighting appliance 10 and each component of the second lighting fixture 30 when the second lighting fixture 30 is attached to the lighting appliance 10. That is, the outer part 42 is arranged on the lighting appliance 10 so as to separate the lens part 313 which is the second light emitting part and the main part 220 which is the first light emitting part when the first lighting fixture 20 is attached to the lighting appliance 10. And the housing part 18 which is the first space and the second space 45 are separated by the outer part 42. That is, in the lighting device 1, the space connecting from the lighting appliance 10 to the second lighting fixture 30 is divided into the housing part 18 which is the first space and the second space 45 by the outer part 42. The inner outer part 429 functions as a heat insulating wall, and alleviates the influence of the operating heat emitted by the first lighting fixture 20 on each component such as the second light source part 31, the control part 34, and the battery 70 of the second lighting fixture 30. In addition, the inner outer part 429 functions as a heat dissipation path for transmitting the operating heat emitted by the first lighting fixture 20 to the outside or the lighting appliance 10. That is, the outer part 42 functions as a heat transfer path from the housing part 18 which is the first space to the attached part 9, or functions as a heat transfer path from the housing part 18 which is the first space to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30. Further, the outer part 42 functions as a heat transfer path from the second space 45 to the attached part 9, or functions as a heat transfer path from the second space 45 to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30. A notch part 430 is formed in the inner outer part 429. The notch part 430 is a through hole in which a part of the wall of the inner outer part 429 is cut out, and serves as a wiring path between the first lighting fixture 20 and the second lighting fixture 30.

[0067] As shown in FIGS. 11 to 13, the short-side outer portion 431 forms the side wall of the outer portion 42. The short-side outer portion 431 is formed so as to rise from the side of the outer main portion 420 along the short-side direction (Y-axis direction) of the outer main portion 420. The short-side outer portion 431 constitutes the wall portions at both ends in the longitudinal direction (X-axis direction) of the outer portion 42. The short-side outer portion 431 constitutes a part of the side walls at both ends in the longitudinal direction (X-axis direction) of the second lighting fixture 30 in a state where the second lighting fixture 30 is attached to the lighting fixture 10.

[0068] In a state where the second lighting fixture 30 is attached to the lighting fixture 10, the long-side outer portion 427 and the short-side outer portion 431 of the outer portion 42 are arranged so as to penetrate the fixture inclined portion 114.

[0069] The outer portion fixture 432 fixes the outer portion 42 to the pedestal portion 44. The outer portion fixture 432 is inserted into the screw hole 424 formed in the step portion 422 and screwed into the screw hole 442 formed in the second light source portion mounting portion 440 of the pedestal portion 44. The outer portion fixture 432 is, for example, a knob screw or the like. As shown in FIG. 13, a nut 434 may be used for the outer portion fixture 432.

[0070] The housing portion 40 also forms a mounting structure for the second light source portion 31 and the like in the second space 45 by the pedestal portion 44. The pedestal portion 44 is for installing the second light source portion 31, the holding portion 317, the control portion 34, the operation portion 36, the insulating portion 38, etc., and arranges each component installed on the pedestal portion 44 on the base portion 41. As shown in FIG. 14, the pedestal portion 44 has a second light source portion mounting portion 440, an operation portion mounting portion 443, a control portion mounting portion 445, and a connecting portion 447.

[0071] The second light source unit mounting portion 440 is a plate-shaped portion. The second light source unit 31 and the insulating portion 38 are placed and mounted on the second light source unit mounting portion 440. The outer shell portion 42 is also mounted on the second light source unit mounting portion 440. The second light source unit mounting portion 440 receives the operating heat emitted by the second light source unit 31 and dissipates the received heat. The second light source unit mounting portion 440 is formed with a screw hole 441 and a screw hole 442. The screw holes 441 are formed at two positions corresponding to the main screw holes 323 of the second light source unit 31. A second light source unit fixture 327 for fixing the second light source unit 31 to the second light source unit mounting portion 440 is mounted in the screw holes 441. The screw holes 442 are formed at two positions corresponding to the screw holes 424 of the outer shell portion 42. An outer shell portion fixture 432 for fixing the outer shell portion 42 to the second light source unit mounting portion 440 is mounted in the screw holes 442.

[0072] The operation unit mounting portion 443 is a plate-shaped portion. The operation unit 36 is placed and mounted on the operation unit mounting portion 443. The operation unit mounting portion 443 is formed with a screw hole 444. An operation unit fixture 363 for fixing the operation unit 36 to the operation unit mounting portion 443 is mounted in the screw hole 444.

[0073] The control unit mounting portion 445 is a plate-shaped portion. The control unit 34 is placed and mounted on the control unit mounting portion 445. The control unit mounting portion 445 functions as a heat dissipation path that receives the operating heat emitted by the second light source unit 31 via the connecting portion 447 and transmits the received heat to the base portion 41 and the lighting fixture 10. The control unit mounting portion 445 is formed with a screw hole 446. A control unit fixture 346 for fixing the control unit 34 to the control unit mounting portion 445 is mounted in the screw hole 446.

[0074] The connecting part 447 is a side wall that connects the second light source unit mounting part 440, the operation unit mounting part 443, and the control unit mounting part 445 to each other. When assuming that the plate surfaces of the second light source unit mounting part 440, the operation unit mounting part 443, and the control unit mounting part 445 are in the horizontal direction, the connecting part 447 is a plate material that extends in the vertical direction. Note that the vertical direction is not necessarily strictly perpendicular to the horizontal direction, and the connecting part 447 may be inclined with respect to the second light source unit mounting part 440, the operation unit mounting part 443, or the control unit mounting part 445. The connecting part 447 is connected so that the second light source unit mounting part 440 and the control unit mounting part 445 face each other, and is also connected so that the operation unit mounting part 443 and the control unit mounting part 445 face each other. The connecting part 447 receives the operating heat emitted by the second light source unit 31 and functions as a heat dissipation path that transfers the received heat to the base part 41 and the lighting fixture 10.

[0075] The pedestal part 44 is formed such that the distance between the second light source unit mounting part 440 and the control unit mounting part 445 is larger than the distance between the operation unit mounting part 443 and the control unit mounting part 445. Note that the distance between the second light source unit mounting part 440 and the control unit mounting part 445 and the distance between the operation unit mounting part 443 and the control unit mounting part 445 may differ depending on, for example, the thickness of the second light source unit 31 and the thickness of the operation unit 36. Therefore, the pedestal part 44 may be formed such that the distance between the second light source unit mounting part 440 and the control unit mounting part 445 is equal to or smaller than the distance between the operation unit mounting part 443 and the control unit mounting part 445. The pedestal part 44 is integrally formed with the connecting part 447, the second light source unit mounting part 440, the operation unit mounting part 443, and the control unit mounting part 445, but these may be formed separately. The pedestal part 44 forms an opening 44a at a position facing the connecting part 447 by the operation unit mounting part 443 and the control unit mounting part 445. The opening 44a is formed at least at a position where the battery 70 is disposed in the pedestal part 44. In a state where the outer shell part 42 is attached to the pedestal part 44, at least a part of the opening 44a is covered by the outer shell part 42 in the lighting device 1.

[0076] (Holding member 50) FIG. 15 is a perspective view of the battery 70 disposed in the base 41 of FIG. 13. FIG. 16 is a cross-sectional view taken along line B-B of the lighting device 1 of FIG. 4. FIG. 17 is a schematic cross-sectional view showing the attachment and detachment of the battery 70 of FIG. 15. FIG. 18 is a schematic cross-sectional view showing the attachment and detachment of the battery 70 of FIG. 16. Next, with reference to FIGS. 11, 15 to 18, the holding member 50 will be described. The holding member 50 is an elastic member such as a leaf spring and holds the battery 70 disposed in the housing portion 40. The holding member 50 includes a fixing portion 51, a holding portion 53, and a holding member fixture 54.

[0077] The fixing portion 51 is a flat plate-like material portion. As shown in FIGS. 15 and 16, the fixing portion 51 is inserted into the holding member fixing portion 411 formed in the base 41, engages with the base 41, and is attached to the base 41. The fixing portion 51 is in contact with the base 41 in a state of being inserted into the holding member fixing portion 411 formed in the base 41. As shown in FIG. 11, a fixing hole 52 is formed in the fixing portion 51. A holding member fixture 54 for fixing the holding member 50 to the base 41 is attached to the fixing hole 52. As shown in FIG. 16, when the second lighting fixture 30 is attached to the lighting fixture 10, the fixing portion 51 is arranged to be substantially parallel to the attached portion 9.

[0078] The holding portion 53 is formed integrally with the fixing portion 51 and is a plate-like portion rising from the fixing portion 51. The holding portion 53 is a plate-like portion extending in the vertical direction when the plate surface of the fixing portion 51 is in the horizontal direction. The holding portion 53 faces the base side portion 414 as shown in FIG. 17 in a state where the holding member 50 is attached to the base 41. The holding portion 53 is inclined with respect to the plate surface of the fixing portion 51 so as to approach the fixing portion 51, and it is desirable that the angle between the plate surface of the holding portion 53 and the plate surface of the fixing portion 51 is 90 degrees or less. Therefore, the holding portion 53 is inclined so as to approach the base side portion 414 in a state where the holding member 50 is attached to the base 41.

[0079] The holding portion 53 has a holding bent portion 53c at its tip portion. The holding bent portion 53c is bent in a mountain shape in the cross section in the rising direction of the holding portion 53, and is formed so as to protrude above the plate surface of the fixing portion 51. More specifically, the holding portion 53 has a side wall fixing portion 53b connected to the fixing portion 51 and a holding bent portion 53c formed at the tip of the side wall fixing portion 53b. The holding bent portion 53c has a first inclined portion 53c1 connected to the side wall fixing portion 53b and a second inclined portion 53c2 connected to the first inclined portion 53c1. The side wall fixing portion 53b is inclined with respect to the plate surface of the fixing portion 51 so as to approach the fixing portion 51, and the first inclined portion 53c1 of the holding bent portion 53c is inclined with respect to the plate surface of the fixing portion 51 so as to approach the fixing portion 51 more than the side wall fixing portion 53b. And the second inclined portion 53c2 of the holding bent portion 53c is inclined in the direction opposite to the inclination direction of the first inclined portion 53c1. Therefore, the cross section of the holding bent portion 53c is formed in an L shape by the first inclined portion 53c1 and the second inclined portion 53c2. The holding portion 53 is integrally formed with the side wall fixing portion 53b, the first inclined portion 53c1, and the second inclined portion 53c2.

[0080] The holding portion 53 has spring properties and elastically deforms. As shown in FIG. 16, when the second lighting fixture 30 is attached to the lighting fixture 10, the holding portion 53 is arranged so as to extend in the vertical direction (Z-axis direction) of the lighting device 1. Further, when the outer shell portion 42 is attached to the pedestal portion 44, as shown in FIG. 16, the holding portion 53 is elastically deformed by contacting the inner side portion 429 of the outer shell of the outer shell portion 42 to hold the battery 70. That is, the holding member 50 has a smaller movable range in a state where the outer shell portion 42 is attached to the pedestal portion 44 than in a state where the outer shell portion 42 is not attached to the pedestal portion 44. On the other hand, as shown in FIG. 18, when the outer shell portion 42 is not attached to the pedestal portion 44, the holding member 50 elastically deforms within a movable range that allows the battery 70 to be attached and detached.

[0081] The holding member fixture 54 is a member that fixes the holding member 50 to the base 41. The holding member fixture 54 is, for example, a screw, a rivet, or the like. The holding member fixture 54 is inserted through a fixing hole 52 formed in the fixing portion 51 and a mounting hole 413 formed in the base bottom portion 410 shown in FIG. 6.

[0082] (Battery 70) Next, with reference to FIGS. 11, 15 to 18, the battery 70 will be described. The battery 70 supplies second lighting power to the second light source unit 31. The battery 70 is a storage battery. The battery 70 is a so-called 4-cell storage battery, but the number of cells constituting the battery 70 is not limited to 4 cells, and may be other numbers such as 6 cells. The battery 70 is detachably held on the base 41 by the holding member 50. In a state where the outer shell portion 42 is attached to the pedestal portion 44, as shown in FIG. 16, the battery 70 is held on the base 41 of the housing portion 40 while being held by the holding member 50. That is, when the battery 70 is disposed inside the housing portion 40, it abuts against the inner surface of the housing portion 40 and is held inside the second space 45 by the holding member 50 attached to the housing portion 40. More specifically, in a state where the outer shell portion 42 is attached to the pedestal portion 44, the battery 70 abuts against the holding bending portion 53c and the base side portion 414 by the holding bending portion 53c, and the lower part of the battery 70 is supported by the holding bending portion 53c, restricting the downward movement of the battery 70. At this time, as described above, the holding portion 53 is restricted from elastic deformation by abutting against the inner side portion 429 of the outer shell of the outer shell portion 42. In a state where the outer shell portion 42 is removed from the base 41, as shown in FIG. 18, by elastically deforming the holding member 50, the operator can remove the battery 70 downward. At this time, the holding portion 53 is not restricted from elastic deformation because it does not abut against the inner side portion 429 of the outer shell of the outer shell portion 42. In FIG. 18, the arrow S indicates the direction in which the battery 70 or the outer shell portion 42 is attached to the base 41, and the arrow R indicates the direction in which the battery 70 or the outer shell portion 42 is removed from the base 41.

[0083] (Second lighting fixture fixture 80) Next, referring to FIG. 6, the second lighting fixture fixing member 80 will be described. The second lighting fixture fixing member 80 is a member for fixing the second lighting fixture 30 to the lighting fixture 10. The second lighting fixture fixing member 80 is, for example, a screw, a rivet, or the like. The second lighting fixture fixing member 80 is inserted through a screw hole 113 formed in the bottom portion 110 of the fixture and a screw hole 416 formed in the base overhang portion 415.

[0084] (Suspension string 60) FIG. 19 is a perspective view of the lighting device 1 of FIG. 1 with the outer portion 42 of the second lighting fixture 30 removed. The suspension string 60 temporarily fixes the outer portion 42 of the second lighting fixture 30 to the lighting fixture 10. The suspension string 60 is a member formed in a string shape or a rod shape, one end of which is fixed to the base portion 41 and the other end of which is fixed to the outer portion 42.

[0085] <Modification example of the lighting device 1> FIG. 20 is a cross-sectional view taken along line B-B of a modification example of the lighting device 1 according to Embodiment 1 of the present invention. The modification example of the lighting device 1 has a second lighting fixture 30a. The modification example of the lighting device 1 differs only in the configuration of the lighting device 1 and the second lighting fixture 30, and the other configurations are the same. The second lighting fixture 30a has a battery 70a and a housing portion 40a that are different from the battery 70 and the housing portion 40 of the second lighting fixture 30. The second lighting fixture 30a differs only in the battery 70a and the housing portion 40a from the second lighting fixture 30, and the other configurations are the same. In the modification example of the lighting device 1, the same reference numerals are given to the parts having the same configuration as the lighting device 1, and the description thereof is omitted.

[0086] (Battery 70a) The battery 70a is a storage battery. The battery 70 is a so-called large-sized storage battery of a 6-cell type. The battery 70a has a different number of cells from the battery 70. (Housing portion 40a) The housing part 40a has a holding part 53a. The housing part 40a only differs in the configuration of the holding part 53a from the holding part 53 of the housing part 40, and the other configurations are the same. The holding part 53a has a side wall fixing part 53b1 connected to the fixing part 51 and a holding bending part 53c formed at the tip of the side wall fixing part 53b1. The holding part 53a is formed in a shape suitable for holding a so-called large-sized 6-cell battery. For example, the battery 70a is larger than the battery 70, and the side wall fixing part 53b1 is formed in a long shape in the vertical direction (Z-axis direction) compared to the side wall fixing part 53b. That is, the distance between the fixing part 51 and the holding bending part 53c of the holding part 53a is larger than the distance between the fixing part 51 and the holding bending part 53c of the holding part 53.

[0087] Embodiment 2. FIG. 21 is a first-direction perspective view of the lighting device 1b according to Embodiment 2 of the present invention. FIG. 22 is a second-direction perspective view of the lighting device 1b according to Embodiment 2 of the present invention. FIG. 23 is a front view of the lighting device 1b according to Embodiment 2 of the present invention. FIG. 24 is a bottom view of the lighting device 1b according to Embodiment 2 of the present invention. FIG. 25 is a rear view of the lighting device 1b according to Embodiment 2 of the present invention. FIG. 26 is a top view of the lighting device 1b according to Embodiment 2 of the present invention. FIG. 27 is a side view of the lighting device 1b according to Embodiment 2 of the present invention. With reference to FIGS. 21 to 27, the configuration of the lighting device 1b according to Embodiment 2 will be described centering on the configuration different from that of the lighting device 1 according to Embodiment 1. In addition, the same reference numerals are given to the parts having the same configuration as the lighting device 1 in FIGS. 1 to 20, and the description thereof is omitted. Further, the first direction in FIG. 21 is the direction in which the lighting device 1b is viewed from below on the side where the second lighting fixture 30 is not provided in the short-side direction (Y-axis direction) of the lighting device 1b. Further, the second direction in FIG. 22 is the direction in which the lighting device 1b is viewed from below on the side where the second lighting fixture 30 is provided in the short-side direction (Y-axis direction) of the lighting device 1b.

[0088] <Lighting device 1b> The lighting device 1b is installed at a position where it can illuminate the lighting space and illuminates the lighting space. The lighting device 1b of the second embodiment is a so-called V-shaped (250 mm width) lighting device.

[0089] The lighting device 1b includes a long lighting fixture 10b attached to an attachment portion 9 such as a ceiling or a wall, a long first lighting fixture 20 detachably attached to the lighting fixture 10b, and a second lighting fixture 30 attached to the lighting fixture 10. In the lighting device 1b, the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short side direction (Y-axis direction).

[0090] [Lighting fixture 10b] The lighting fixture 10b has an appliance main body portion 11b, an appliance end portion 12b, an appliance side coupler 13, an appliance side terminal block 14, an appliance side fixture 15, and an appliance side power line 16. In the lighting device 1b of the second embodiment, the configuration of the lighting fixture 10b is different from that of the lighting fixture 10 of the lighting device 1 of the first embodiment.

[0091] (Appliance main body portion 11b) The appliance main body portion 11b is a housing that constitutes the outer shell of the lighting fixture 10b. The appliance main body portion 11b is attached to the attachment portion 9 using a fixture such as a bolt. The appliance main body portion 11b has an appliance bottom portion 110, an appliance side portion 111, an appliance inclined portion 114b, and an appliance side edge portion 117b. The appliance bottom portion 110, the appliance side portion 111, the appliance inclined portion 114b, and the appliance side edge portion 117b are integrally formed, for example, by bending a metal plate. However, the appliance main body portion 11b is not limited to being formed by bending a metal plate. For example, it may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Also, the appliance bottom portion 110, the appliance side portion 111, the appliance inclined portion 114b, and the appliance side edge portion 117b are not limited to being integrally formed, and may be formed separately as long as these members are securely fixed to each other.

[0092] The appliance inclined portions 114b are inclined walls provided in pairs on both sides of the accommodating portion 18 in the lateral direction (Y-axis direction) of the appliance main body portion 11b. The appliance inclined portions 114b are formed to be inclined with respect to the mounting surface of the mounted portion 9. The pair of appliance inclined portions 114b are formed from the longitudinal sides of the appliance side edge portions 117b upward (Z1 side) and away from the accommodating portion 18. That is, the appliance inclined portions 114b are inclined such that the distance between the ends on the mounted portion 9 side in the vertical direction (Z-axis direction) of the appliance main body portion 11b is wider than the distance between the ends on the illumination space side. In the illumination device 1b, the accommodating portion 18 is formed between the pair of appliance inclined portions 114b in the lateral direction (Y-axis direction). The appliance inclined portions 114b form inclined surfaces and may reflect the light emitted from the light source toward the illumination space. Note that the distance between both ends in the lateral direction (Y-axis direction) of the appliance inclined portions 114b of the illumination device 1b is larger than the distance between both ends in the lateral direction (Y-axis direction) of the appliance inclined portions 114 in the illumination device 1.

[0093] The appliance side edge portions 117b are the edge portions of the accommodating portion 18 provided in pairs on both sides of the accommodating portion 18 in the lateral direction (Y-axis direction) of the appliance main body portion 11b. The appliance side edge portions 117b are formed between the appliance side portions 111 and the appliance inclined portions 114b. The appliance side edge portions 117b are formed at the tip portions of the appliance side portions 111 opposite to the appliance bottom portions 110 and are formed in pairs so as to separate from each other from the respective tip portions of the pair of appliance side portions 111. The appliance side edge portions 117b constitute the lower surface portion of the appliance main body portion 11b.

[0094] On one side in the short side direction (Y-axis direction) of the instrument main body part 11b across the accommodation part 18, an instrument inclined part 114b and an instrument side edge part 117b are formed, and an instrument through part 115b which is a through hole is formed in them. The instrument through part 115b is formed at the central part in the longitudinal direction (X-axis direction) of the instrument main body part 11b. As shown in Fig. 24, the instrument through part 115b is formed in a rectangular shape in the instrument main body part 11b in a plan view when looking at the attached part 9 from the illumination space side. A second lighting fixture 30 is inserted into this instrument through part 115b, and the second lighting fixture 30 is arranged in the instrument through part 115b so as to protrude from the instrument inclined part 114b and the instrument side edge part 117b to the illumination space side. Therefore, the instrument through part 115b only needs to be formed corresponding to the shape and dimensions of the outer part 42 of the second lighting fixture 30, and is not limited to the shape formed in a rectangular shape in a plan view when looking at the attached part 9 from the illumination space side. The instrument through part 115b functions as an attachment / detachment opening or a detachment opening of the outer part 42.

[0095] (Instrument end part 12b) The instrument end part 12b is arranged at both ends in the longitudinal direction (X-axis direction) of the instrument main body part 11b. The instrument end part 12b has an end plate 120b that covers the ends in the longitudinal direction (X-axis direction) of the instrument main body part 11b. The end plate 120b constitutes the side wall of the instrument main body part 11b extending in the short side direction (Y-axis direction) of the instrument main body part 11b. And the end plate 120b is arranged at the ends in the longitudinal direction (X-axis direction) of the instrument inclined part 114b and the instrument side edge part 117b, and constitutes the outer shape of the lighting fixture 10b together with the instrument main body part 11b. The distance between both ends in the short side direction (Y-axis direction) of the instrument end part 12b of the lighting device 1b is larger than the distance between both ends in the short side direction (Y-axis direction) of the instrument end part 12 of the lighting device 1. In the end plate 120b, a knockout part 121 is formed which forms a through hole in the end plate 120b by removing a part of the wall part constituting the end plate 120b.

[0096] Embodiment 3. FIG. 28 is a first-direction perspective view of the lighting device 1c according to Embodiment 3 of the present invention. FIG. 29 is a second-direction perspective view of the lighting device 1c according to Embodiment 3 of the present invention. FIG. 30 is a front view of the lighting device 1c according to Embodiment 3 of the present invention. FIG. 31 is a bottom view of the lighting device 1c according to Embodiment 3 of the present invention. FIG. 32 is a rear view of the lighting device 1c according to Embodiment 3 of the present invention. FIG. 33 is a top view of the lighting device 1c according to Embodiment 3 of the present invention. FIG. 34 is a side view of the lighting device 1c according to Embodiment 3 of the present invention. With reference to FIGS. 28 to 34, the configuration of the lighting device 1c according to Embodiment 3 will be described centering on the configuration different from that of the lighting device 1 according to Embodiment 1. Note that the same reference numerals are given to the parts having the same configuration as the lighting device 1 in FIGS. 1 to 20, and the description thereof is omitted. Further, the first direction in FIG. 28 is the direction in which the lighting device 1c is viewed from below on the side where the second lighting fixture 30 is not provided in the short-side direction (Y-axis direction) of the lighting device 1c. Further, the second direction in FIG. 29 is the direction in which the lighting device 1c is viewed from below on the side where the second lighting fixture 30 is provided in the short-side direction (Y-axis direction) of the lighting device 1c.

[0097] <Lighting device 1c> The lighting device 1c is installed at a position where it can illuminate the lighting space and illuminates the lighting space. The lighting device 1c of Embodiment 3 is a so-called trough-shaped lighting device.

[0098] The lighting device 1c includes a long lighting fixture 10c attached to an attachment part 9 such as a ceiling or a wall, a long first lighting fixture 20 detachably attached to the lighting fixture 10c, and a second lighting fixture 30 attached to the lighting fixture 10. In the lighting device 1c, the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short-side direction (Y-axis direction). As shown in FIG. 29, the lighting device 1c is arranged on the side of the lighting fixture 10c in the short-side direction (Y-axis direction) of the lighting device 1c. Different from the lighting device 1 of Embodiment 1 and the lighting device 1b of Embodiment 2, the second lighting fixture 30 of the lighting device 1c of Embodiment 3 is arranged outside the lighting fixture 10c.

[0099] [Lighting fixture 10c] The lighting fixture 10c includes an appliance main body portion 11c, an appliance end portion 12c, an appliance-side coupler 13, an appliance-side terminal block 14, an appliance-side fixture 15, and an appliance-side power line 16. The lighting device 1c of the third embodiment is different from the lighting fixture 10 of the lighting device 1 of the first embodiment in the configuration of the lighting fixture 10c.

[0100] (Appliance main body portion 11c) The appliance main body portion 11c is a housing that constitutes the outer shell of the lighting fixture 10c. The appliance main body portion 11c is attached to the attached portion 9 using a fixture such as a bolt. The appliance main body portion 11c includes an appliance bottom portion 110, an appliance side portion 111, and an appliance side edge portion 117c. The appliance bottom portion 110, the appliance side portion 111, and the appliance side edge portion 117c are integrally formed, for example, by bending a metal plate material. However, the appliance main body portion 11c is not limited to being formed by bending a metal plate material, and may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Also, the appliance bottom portion 110 and the appliance side portion 111 are not limited to being integrally formed, and may be formed separately as long as these members are securely fixed to each other. The appliance side edge portion 117c is the edge of the accommodating portion 18 provided in pairs on both sides of the accommodating portion 18 in the short side direction (Y-axis direction) of the appliance main body portion 11c. The appliance side edge portion 117c is formed at the tip of the appliance side portion 111 on the side opposite to the appliance bottom portion 110. The appliance main body portion 11c of the third embodiment constitutes the outer shell of a so-called trough-shaped lighting fixture 10 and is different from the appliance main body portion 11 of the first embodiment in that it does not have an appliance inclined portion 114.

[0101] (Appliance end portion 12c) The appliance end portion 12c is disposed at both end portions of the appliance main body portion 11c in the longitudinal direction (X-axis direction). The appliance end portion 12c has an end plate 120c that covers the end portion of the appliance main body portion 11c in the longitudinal direction (X-axis direction). The end plate 120c constitutes a side wall of the appliance main body portion 11c that extends in the lateral direction (Y-axis direction) of the appliance main body portion 11c. And the end plate 120c is disposed at the longitudinal direction (X-axis direction) end portions of the appliance bottom portion 110 and the appliance side portion 111, and constitutes the outer contour of the lighting appliance 10c together with the appliance main body portion 11c. A knockout portion 121c is formed on the end plate 120c, and a through hole is formed in the end plate 120c by removing a part of the wall portion that constitutes the end plate 120c.

[0102] Embodiment 4. FIG. 35 is a first-direction perspective view of the lighting device 1d according to Embodiment 4 of the present invention. FIG. 36 is a second-direction perspective view of the lighting device 1d according to Embodiment 4 of the present invention. FIG. 37 is a front view of the lighting device 1d according to Embodiment 4 of the present invention. FIG. 38 is a bottom view of the lighting device 1d according to Embodiment 4 of the present invention. FIG. 39 is a rear view of the lighting device 1d according to Embodiment 4 of the present invention. FIG. 40 is a top view of the lighting device 1d according to Embodiment 4 of the present invention. FIG. 41 is a side view of the lighting device 1d according to Embodiment 4 of the present invention. With reference to FIGS. 35 to 41, the configuration of the lighting device 1d according to Embodiment 4 will be described centering on the configuration that is different from the configuration of the lighting device 1 according to Embodiment 1. In addition, the same reference numerals are given to the parts having the same configuration as the lighting device 1 in FIGS. 1 to 20, and the description thereof is omitted. Further, the first direction in FIG. 35 is the direction of viewing the lighting device 1d from below on the side where the second lighting fixture 30 is not provided in the lateral direction (Y-axis direction) of the lighting device 1d. Further, the second direction in FIG. 36 is the direction of viewing the lighting device 1d from below on the side where the second lighting fixture 30 is provided in the lateral direction (Y-axis direction) of the lighting device 1d.

[0103] <Lighting device 1d> The lighting device 1d is installed at a position where it can illuminate the lighting space and illuminates the lighting space. The lighting device 1d of Embodiment 4 is a so-called embedded lighting device.

[0104] The lighting device 1d includes a long lighting fixture 10d attached to an attachment portion 9 such as a ceiling or a wall, a long first lighting fixture 20 detachably attached to the lighting fixture 10d, and a second lighting fixture 30 attached to the lighting fixture 10. In the lighting device 1d, the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short-side direction (Y-axis direction).

[0105] [lighting fixture 10d] The lighting fixture 10d has an appliance main body portion 11d, an appliance end portion 12d, an appliance-side coupler 13, an appliance-side terminal block 14, an appliance-side fixture 15, and an appliance-side power line 16. In the lighting device 1d of Embodiment 4, the configuration of the lighting fixture 10d is different from that of the lighting fixture 10 of the lighting device 1 of Embodiment 1.

[0106] (appliance main body portion 11d) The appliance main body portion 11d is a housing that constitutes the outer shell of the lighting fixture 10d. The appliance main body portion 11d is attached to the attachment portion 9 using a fixture such as a bolt. The appliance main body portion 11d has an appliance bottom portion 110, an appliance side portion 111d, an appliance inclined portion 114d, and an appliance side edge portion 117d. The appliance bottom portion 110, the appliance side portion 111d, the appliance inclined portion 114d, and the appliance side edge portion 117d are integrally formed by bending, for example, a metal plate. However, the appliance main body portion 11d is not limited to being formed by bending a metal plate. For example, it may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Also, the appliance bottom portion 110, the appliance side portion 111d, the appliance inclined portion 114d, and the appliance side edge portion 117d are not limited to being integrally formed, and may be formed separately as long as these members are securely fixed to each other.

[0107] The appliance main body portion 11d forms a housing portion 18 that is formed in a concave shape by the appliance bottom portion 110, the appliance side portion 111d, and an appliance end portion 12d, which will be described later. The housing portion 18 has a bottom surface portion formed by the appliance bottom portion 110, a side wall portion extending in the longitudinal direction formed by the appliance side portion 111d, and a side wall portion extending in the short direction formed by the appliance end portion 12d. A part of the first lighting fixture 20 is accommodated in this housing portion 18, and the first lighting fixture 20 is attached thereto.

[0108] The appliance inclined portion 114d is an inclined wall provided in pairs on both sides of the housing portion 18 in the short direction (Y-axis direction) of the appliance main body portion 11b. The appliance inclined portion 114d is formed so as to be inclined with respect to the mounting surface of the mounted portion 9. The pair of appliance inclined portions 114d are formed such that the distance between them increases downward (Z2 side) from the housing portion 18. That is, the appliance inclined portion 114d is inclined such that the interval between the end portions on the lighting space side is wider than the interval between the end portions on the mounted portion 9 side in the vertical direction (Z-axis direction) of the appliance main body portion 11d. In the short direction (Y-axis direction), the housing portion 18 is not disposed between the pair of appliance inclined portions 114d, and the pair of appliance inclined portions 114d are formed to face each other. However, in a plan view of the lighting device 1d viewed from the lighting space side, the housing portion 18 is disposed between the pair of appliance inclined portions 114d. The appliance inclined portion 114d forms an inclined surface, and the light emitted from the light source may be reflected toward the lighting space.

[0109] The appliance side edge portion 117d is an edge portion of the housing portion 18 provided in pairs on both sides of the housing portion 18 in the short direction (Y-axis direction) of the appliance main body portion 11d. The appliance side edge portion 117d is formed between the appliance side portion 111d and the appliance inclined portion 114d. The appliance side edge portion 117d is formed at the tip portion of the appliance side portion 111d on the side opposite to the appliance bottom portion 110, and is formed in pairs so as to be separated from each other from the tip portions of the pair of appliance side portions 111d.

[0110] On one side in the short side direction (Y-axis direction) of the instrument main body part 11d with the accommodation part 18 interposed therebetween, an instrument inclination part 114d and an instrument side edge part 117d are formed, and an instrument through part 115d which is a through hole is formed in these parts. The instrument through part 115d is formed at the central part in the longitudinal direction (X-axis direction) of the instrument main body part 11d. As shown in Fig. 38, the instrument through part 115d is formed in a rectangular shape in the instrument main body part 11d in a plan view when the attached part 9 is viewed from the illumination space side. A second lighting fixture 30 is inserted into this instrument through part 115d, and the second lighting fixture 30 is arranged in the instrument through part 115d so as to project from the instrument inclination part 114d and the instrument side edge part 117d to the illumination space side. Therefore, the instrument through part 115d only needs to be formed corresponding to the shape and dimensions of the outer part 42 of the second lighting fixture 30, and is not limited to being formed in a rectangular shape in a plan view when the attached part 9 is viewed from the illumination space side. The instrument through part 115d functions as an attachment / detachment opening or a detachment opening of the outer part 42.

[0111] (Instrument end part 12d) The instrument end part 12d is arranged at both ends in the longitudinal direction (X-axis direction) of the instrument main body part 11d. The instrument end part 12d covers the ends in the longitudinal direction (X-axis direction) of the instrument main body part 11d. The instrument end part 12d constitutes the side wall of the instrument main body part 11d extending in the short side direction (Y-axis direction) of the instrument main body part 11d. And the instrument end part 12d constitutes the outer shell of the lighting instrument 10d together with the instrument main body part 11d.

[0112] Embodiment 5. FIG. 42 is a first-direction perspective view of the lighting device 1e according to Embodiment 5 of the present invention. FIG. 43 is a second-direction perspective view of the lighting device 1e according to Embodiment 5 of the present invention. FIG. 44 is a front view of the lighting device 1e according to Embodiment 5 of the present invention. FIG. 45 is a bottom view of the lighting device 1e according to Embodiment 5 of the present invention. FIG. 46 is a rear view of the lighting device 1e according to Embodiment 5 of the present invention. FIG. 47 is a top view of the lighting device 1e according to Embodiment 5 of the present invention. FIG. 48 is a side view of the lighting device 1e according to Embodiment 5 of the present invention. With reference to FIGS. 42 to 48, the configuration of the lighting device 1e according to Embodiment 5 will be described centering on the configuration different from that of the lighting device 1 according to Embodiment 1. In addition, the same reference numerals are given to the parts having the same configuration as the lighting device 1 in FIGS. 1 to 20, and the description thereof is omitted. Further, the first direction in FIG. 42 is the direction in which the lighting device 1e is viewed from below on the side where the second lighting fixture 30 is not provided in the short-side direction (Y-axis direction) of the lighting device 1e. Further, the second direction in FIG. 43 is the direction in which the lighting device 1e is viewed from below on the side where the second lighting fixture 30 is provided in the short-side direction (Y-axis direction) of the lighting device 1e.

[0113] <lighting device 1e> The lighting device 1e is installed at a position where it can illuminate the lighting space and illuminates the lighting space. The lighting device 1e of Embodiment 5 is a so-called embedded lighting device.

[0114] The lighting device 1e includes a long lighting fixture 10e attached to an attachment part 9 such as a ceiling or a wall, a long first lighting fixture 20 detachably attached to the lighting fixture 10e, and a second lighting fixture 30e attached to the lighting fixture 10. In the lighting device 1e, the first lighting fixture 20 and the second lighting fixture 30e are arranged side by side in the short-side direction (Y-axis direction).

[0115] [lighting fixture 10e] The lighting fixture 10e includes an appliance main body part 11e, an appliance end part 12e, an appliance-side coupler 13, an appliance-side terminal block 14, an appliance-side fixture 15, and an appliance-side power line 16. The lighting device 1e of Embodiment 5 has a different configuration of the lighting fixture 10e and the second lighting fixture 30e from those of the lighting fixture 10 and the second lighting fixture 30 of the lighting device 1 of Embodiment 1.

[0116] (Appliance main body part 11e) The appliance main body part 11e is a housing that constitutes the outer shell of the lighting fixture 10e. The appliance main body part 11e is attached to the attached part 9 using a fixture such as a bolt. The appliance main body part 11e includes an appliance bottom part 110e, an appliance side part 111e, an appliance inclined part 114e, and an appliance side edge part 117e. The appliance bottom part 110e, the appliance side part 111e, the appliance inclined part 114e, and the appliance side edge part 117e are integrally formed by bending a metal plate material, for example. However, the appliance main body part 11e is not limited to being formed by bending a metal plate material and may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Further, the appliance bottom part 110e, the appliance side part 111e, the appliance inclined part 114e, and the appliance side edge part 117e are not limited to being integrally formed and may be formed separately as long as these members are securely fixed to each other.

[0117] The appliance main body part 11e forms a housing part 18 formed in a concave shape by the appliance bottom part 110e, the appliance side part 111e, and the appliance end part 12e described later. The housing part 18 has a bottom surface part formed by the appliance bottom part 110e, a side wall part extending in the longitudinal direction formed by the appliance side part 111e, and a side wall part extending in the short direction formed by the appliance end part 12e. A part of the first lighting fixture 20 is accommodated in this housing part 18, and the first lighting fixture 20 is attached thereto.

[0118] The appliance inclined portions 114e are inclined walls provided in pairs on both sides of the housing portion 18 in the lateral direction (Y-axis direction) of the appliance main body portion 11e. The appliance inclined portions 114e are formed so as to be inclined with respect to the mounting surface of the mounted portion 9. The pair of appliance inclined portions 114e are formed such that the distance between them increases downward (Z2 side) from the housing portion 18. That is, the appliance inclined portions 114e are inclined such that the distance between the end portions on the illumination space side is wider than the distance between the end portions on the mounted portion 9 side in the vertical direction (Z-axis direction) of the appliance main body portion 11e. In the lateral direction (Y-axis direction), the housing portion 18 is not disposed between the pair of appliance inclined portions 114e, and the pair of appliance inclined portions 114e are formed to face each other. However, in a plan view of the illumination device 1e as viewed from the illumination space side, the housing portion 18 is disposed between the pair of appliance inclined portions 114e. The appliance inclined portions 114e form inclined surfaces and may reflect the light emitted from the light source toward the illumination space.

[0119] The appliance side edge portions 117e are the edge portions of the housing portion 18 provided in pairs on both sides of the housing portion 18 in the lateral direction (Y-axis direction) of the appliance main body portion 11e. The appliance side edge portions 117e are formed between the appliance side portions 111e and the appliance inclined portions 114e. The appliance side edge portions 117e are formed at the tip portions of the appliance side portions 111e on the side opposite to the appliance bottom portion 110e, and are formed in pairs so as to be separated from each other from the respective tip portions of the pair of appliance side portions 111e.

[0120] An appliance through hole 115e, which is a through hole, is formed in the appliance inclined portion 114e and the appliance side edge portion 117e formed on one side in the lateral direction (Y-axis direction) of the appliance main body portion 11e with the housing portion 18 interposed therebetween. The appliance through hole 115e is composed of two through holes, a first through hole 116e and a second through hole 118e. The first through hole 116e and the second through hole 118e are formed along the longitudinal direction (X-axis direction) of the appliance main body portion 11e.

[0121] The first through-hole 116e is formed at the central portion of the instrument main body 11e in the longitudinal direction (X-axis direction). As shown in FIG. 45, the first through-hole 116e is formed in a rectangular shape in the instrument main body 11e in a plan view when viewed from the illumination space side toward the mounted portion 9. The outer peripheral portion 42e of the second lighting fixture 30e is inserted into the first through-hole 116e, and the second light source portion 31 of the second lighting fixture 30e is disposed in the first through-hole 116e so as to project toward the illumination space side from the instrument inclined portion 114e and the instrument side edge portion 117e. Therefore, the first through-hole 116e only needs to be formed corresponding to the shape and dimensions of the outer peripheral portion 42e of the second lighting fixture 30e, and is not limited to the shape formed in a rectangular shape in a plan view when viewed from the illumination space side toward the mounted portion 9. The instrument through-hole 115e functions as an insertion / removal port or a detachment port of the outer peripheral portion 42e.

[0122] As shown in FIG. 45, the second through-hole 118e is formed in a rectangular shape in the instrument main body 11e in a plan view when viewed from the illumination space side toward the mounted portion 9. The operation portion 36 of the second lighting fixture 30e is disposed in the second through-hole 118e so as to be exposed through the instrument inclined portion 114e and the instrument side edge portion 117e. Therefore, the second through-hole 118e only needs to be formed corresponding to the shape and dimensions of the operation portion 36 of the second lighting fixture 30e, and is not limited to the shape formed in a rectangular shape in a plan view when viewed from the illumination space side toward the mounted portion 9. Through the second through-hole 118e, the operation surface portion 360 such as the operation button 361 and the display lamp 362 of the operation portion 36 is exposed outside the instrument main body 11e of the lighting device 1e.

[0123] (Instrument end portion 12e) The instrument end portions 12e are disposed at both ends of the instrument main body 11e in the longitudinal direction (X-axis direction). The instrument end portions 12e cover the ends of the instrument main body 11e in the longitudinal direction (X-axis direction). The instrument end portions 12e constitute the side walls of the instrument main body 11e extending in the short side direction (Y-axis direction) of the instrument main body 11e. Then, the instrument end portions 12e and the instrument main body 11e together constitute the outer shell of the lighting fixture 10e.

[0124] [Second lighting fixture 30e] With reference to FIGS. 42 to 48, the outline of the second lighting fixture 30e will be described. The second lighting fixture 30e is an emergency lighting fixture that irradiates light in the event of an emergency where power is not supplied to the lighting device 1e from outside the lighting device 1e, for example, due to a power outage or the like, and illuminates the lighting space. The second lighting fixture 30e has a reduced-sized outer portion 42e exposed from the lighting fixture 10e as compared with the lighting fixture 10 of the first embodiment, and the lighting device 1e has an improved design aspect as compared with the lighting device 1.

[0125] The second lighting fixture 30e is attached to the lighting fixture 10e and constitutes the lighting device 1e together with the first lighting fixture 20. The second lighting fixture 30e is formed in a long shape and is attached along the longitudinal direction (X-axis direction) of the lighting fixture 10e. Further, the second lighting fixture 30e is provided at the central portion in the longitudinal direction (X-axis direction) of the lighting fixture 10e. The second lighting fixture 30e is arranged side by side with the first lighting fixture 20 in the short side direction (Y-axis direction) of the lighting fixture 10e. And the second lighting fixture 30e is arranged such that the longitudinal direction of the first lighting fixture 20 and the longitudinal direction of the second lighting fixture 30e are parallel to each other in a plan view when the attached portion 9 is viewed from the lighting space side. The second lighting fixture 30e is provided so as to protrude from the fixture through-hole 115e formed in the fixture inclined portion 114e. More specifically, the outer portion 42e of the second lighting fixture 30e is arranged so as to protrude from the first through-hole 116e of the fixture through-hole 115e, and the operation portion 36 of the second lighting fixture 30e is arranged so as to be exposed from the second through-hole 118e of the fixture through-hole 115e. The second lighting fixture 30e includes a second light source portion 31, a control portion 34, an operation portion 36, an insulating portion 38, a housing portion 40e, a holding member 50, a battery 70, a second lighting fixture fixing tool 80, and a suspension string 60.

[0126] FIG. 49 is a cross-sectional view taken along line E-E of the lighting device 1e in FIG. 45. FIG. 50 is a third-direction perspective view of the second lighting fixture 30e in FIG. 42. FIG. 51 is a third-direction exploded perspective view of the second lighting fixture 30e in FIG. 42. FIG. 52 is a fourth-direction perspective view of the second lighting fixture 30e in FIG. 49. FIG. 53 is a fourth-direction exploded perspective view of the second lighting fixture 30e in FIG. 49. FIG. 54 is a detailed exploded perspective view of the second lighting fixture 30e with the outer shell portion 42e in FIG. 51 removed. FIG. 55 is a detailed exploded perspective view of the second lighting fixture 30e with the outer shell portion 42e in FIG. 53 removed. The configuration of the second lighting fixture 30 will be described in more detail with reference to FIGS. 49 to 55. In FIGS. 50 and 51, the third direction is a perspective view of the second lighting fixture 30e when viewing the lighting device 1e from the outside to the inside and from the lighting space side to the attachment portion 9 side in the short side direction (Y-axis direction) of the lighting device 1e. Also, in FIGS. 52 and 53, the fourth direction is a perspective view of the second lighting fixture 30e when viewing the lighting device 1e from the inside to the outside and from the lighting space side to the attachment portion 9 side in the short side direction (Y-axis direction) of the lighting device 1e. Further, in FIGS. 50 to 55, the up-down direction (Z-axis direction) on the paper surface for explaining the second lighting fixture 30e is shown opposite to the up-down direction (Z-axis direction) on the paper surface of the lighting device 1e in FIG. 42.

[0127] (Second light source unit 31) The second light source unit 31 is a light source for emergency use and emits light. As shown in FIGS. 50 and 52, the second light source unit 31 is housed in the housing unit 40e with a part of the second light transmissive part 312 exposed from the housing unit 40e. As shown in FIGS. 54 and 55, the second light source unit 31 includes a second light source substrate 310, a second light emitting element 311, a second light transmissive part 312, a holding part 317e, and a second light source unit fixture 327. Note that the dotted line Lt1 shown in FIG. 49 is a line obtained by comparing the position of the tip of the irradiation side of the lens part 313 with the position of the tip of the irradiation side of the main part 220 of the first light transmissive part 22 that constitutes the first lighting fixture 20. Also, the dotted line Lt2 is a line obtained by comparing the mounting position of the lens part 313 with the mounting position of the main part 220 of the first light transmissive part 22 that constitutes the first lighting fixture 20. As can be understood from the dotted line Lt2, in the lighting device 1e, the installation position of the lens part 313 is arranged closer to the lighting space side than the installation position of the main part 220 of the first lighting fixture 20. That is, in the vertical direction with respect to the appliance bottom 110e, the lens part 313 is arranged at a position higher than the main part 220 with the appliance bottom 110e and its extension plane as a reference. Also, as can be understood from the dotted line Lt1, in the lighting device 1e, the distance between the tip of the irradiation side of the lens part 313 and the appliance bottom 110e and its extension plane is larger than the distance between the tip of the irradiation side of the main part 220 of the first lighting fixture 20 and the appliance bottom 110e and its extension plane. Note that in the lighting device 1e, it is sufficient if a partition is provided between the main part 220 of the first lighting fixture 20 and the lens part 313 of the second lighting fixture 30, and the positional relationship between the lens part 313 and the main part 220 is not limited to the above-described positional relationship.

[0128] The attachment part 316 of the second light source unit 31 is a flange part formed around the lens part 313, and is guided by the mounting guide 321 of the holding part 317e when attaching the second light transmissive part 312 to the holding part 317e, and engages with the holding protrusion 320 of the holding part 317e.

[0129] The holding part 317e is for fixing the second light source substrate 310 and the lens part 313 to a second pedestal part 48e of a pedestal part 45e which will be described later. As shown in FIGS. 51 and 53, the holding part 317e has a main holding part 318e and an auxiliary holding part 324e. The main holding part 318e is formed in a plate shape and serves as a pedestal on which a second light-transmitting part 312 functioning as a lens is mounted.

[0130] The main holding part 318e has holding protrusions 320 for locking the mounted second light-transmitting part 312. The holding protrusions 320 are provided on side walls 318a rising from the main holding part 318e and are protruding parts protruding inward from the side walls 318a. The holding protrusions 320 lock the second light-transmitting part 312 by sandwiching the second light-transmitting part 312 together with the main holding part 318e from the vertical direction (Z-axis direction). The second light-transmitting part 312 is arranged in a lens holding part 319 of the main holding part 318e by the holding protrusions 320. The holding part 317e forms a mounting guide 321 between the lens holding part 319 and the holding protrusions 320. The mounting guide 321 is a groove formed between the lens holding part 319 and the holding protrusions 320. The mounting guide 321 fits with a mounting part 316 of the second light-transmitting part 312 when the second light-transmitting part 312 is attached to the holding part 317e and guides the slide of the mounted second light-transmitting part 312. A through hole 322 is formed in the main holding part 318e. The through hole 322 is formed so as to be located above the mounting range of the second light-emitting element 311. The second light-transmitting part 312 attached to the main holding part 318e faces the lens part 313 and the second light-emitting element 311 through the through hole 322. Therefore, the light emitted from the second light-emitting element 311 reaches the lens part 313 through the through hole 322. Further, main part screw holes 323 are formed in the main holding part 318e. The main part screw holes 323 are formed at two positions of the main holding part 318e with the lens holding part 319 in between. The main part screw holes 323 are holes through which a second light source part fixing tool 327 for fixing the second light source part 31 to the pedestal part 45e is inserted. Of the main part screw holes 323 formed at two positions, one main part screw hole 323 overlaps with an auxiliary part screw hole 325 formed in the auxiliary holding part 324e and communicates with the auxiliary part screw hole 325.

[0131] The holding sub - part 324e is a plate - shaped member. The second light - transmitting part 312 arranged in the lens holding part 319 locks the second light - transmitting part 312 so that it does not come out of the mounting guide 321. The holding sub - part 324e also fixes the second light - transmitting part 312 so that the second light - transmitting part 312 does not rattle within the mounting guide 321. A sub - part screw hole 325 is formed in the holding sub - part 324e. The sub - part screw hole 325 is a hole through which a second light - source part fixing tool 327 for fixing the second light - source part 31 to the pedestal part 45e is inserted. The sub - part screw hole 325 overlaps with and communicates with the main - part screw hole 323 formed in the holding main - part 318e.

[0132] The second light - source part fixing tool 327 is a member for fixing the second light - source part 31 to the second pedestal part 48e of the pedestal part 45e. The second light - source part fixing tool 327 is, for example, a screw, a rivet, etc. The second light - source part fixing tool 327 is inserted through the main - part screw hole 323 formed in the holding main - part 318 and the sub - part screw hole 325 formed in the holding sub - part 324.

[0133] (Control unit 34) The screw hole 344 formed in the first case 343 of the case 342 is a hole through which a control - unit fixing tool 346 for fixing the control unit 34 to the first pedestal part 46e of the pedestal part 45e is inserted. That is, the control - unit fixing tool 346 fixes the control unit 34 to the first pedestal part 46e of the pedestal part 44.

[0134] (Operation unit 36) The operation - unit fixing tool 363 fixes the operation unit 36 to the first pedestal part 46e of the pedestal part 45e.

[0135] (Insulating part 38) The insulating portion 38 is disposed between the second light source substrate 310 of the second light source unit 31 and the second light source unit mounting portion 480e of the second pedestal portion 48e within the second lighting fixture 30e. The insulating portion 38 electrically insulates the second light source substrate 310 of the second light source unit 31 from the second light source unit mounting portion 480e of the second pedestal portion 48e. The insulating portion screw hole 380 formed in the insulating portion 38 is a hole through which the second light source unit fixing tool 327 for fixing the second light source unit 31 to the second light source unit mounting portion 480e of the second pedestal portion 48e is inserted. By fixing the holding main portion 318e of the second light source unit 31 to the second light source unit mounting portion 480e of the second pedestal portion 48e, the insulating portion 38 is also fixed to the second light source unit mounting portion 480e of the pedestal portion 45e.

[0136] (Housing portion 40e) Next, with reference to FIGS. 49 to 55, the housing portion 40e of the second lighting fixture 30e will be described. The housing portion 40e constitutes the outer shell of the second lighting fixture 30e. The housing portion 40e is formed in a box shape by an outer shell portion 42e and a base portion 41e, and forms a second space 45 inside. The second space 45 formed by the housing portion 40e houses the second light source unit 31, the control unit 34, the operation unit 36, and the insulating portion 38. As shown in FIGS. 50 and 52, the second lighting fixture 30e is covered with the housing portion 40e that houses the entire optical system such as the second light source unit 31, and the lens portion 313 and the outer shell fixing tool 432 are exposed, but neither protrudes from the outer surface 420a of the housing portion 40e. For this reason, the housing portion 40e serves as a partition between the first lighting fixture 20, which is a normal light source, and the second lighting fixture 30e, which is an emergency light source. The housing portion 40e has a base portion 41e, an outer shell portion 42e, and a pedestal portion 45e.

[0137] The base portion 41e is a portion that serves as a base for housing the second light source unit 31 as a base portion. The base portion 41e has a base bottom portion 410e, a base side portion 414e, and a base overhanging portion 415e. The base bottom portion 410e is a member formed in a rectangular plate shape. The first pedestal portion 46e of the pedestal portion 45e is attached to the base bottom portion 410.

[0138] When the outer housing portion 42e is attached to the base portion 41e, the base side portion 414e guides the movement of the outer housing portion 42e. The base side portion 414e is a side wall that rises from the edge of the base bottom portion 410e. The base side portion 414e is provided along the longitudinal direction (X-axis direction) of the long base bottom portion 410e formed in a long shape. When the first pedestal portion 46e of the pedestal portion 45e is attached to the base portion 41e, the base side portion 414e faces the outside pedestal portion 467e, and the base side portion 414 and the outside pedestal portion 467e are fixed by a fixture such as a screw.

[0139] The base overhanging portion 415e is a mounting portion for attaching the second lighting fixture 30e to the fixture bottom portion 110e of the lighting fixture 10e. The base overhanging portion 415e is continuously connected to the base bottom portion 410 and is integrally formed with the base bottom portion 410e, and is a plate material provided so as to extend from the base bottom portion 410e. The base overhanging portion 415e is provided on the opposite side of the side of the base bottom portion 410e where the base side portion 414 is provided. The base overhanging portion 415e extends to the opposite side via the pedestal portion 45e with respect to the base side portion 414e. When the second lighting fixture 30e is disposed on the lighting fixture 10e, the base overhanging portion 415e faces and abuts against the fixture bottom portion 110e. A screw hole 416e is formed in the base overhanging portion 415e. The screw hole 416e is a hole through which a second lighting fixture fixing tool 80 for fixing the second lighting fixture 30e to the fixture bottom portion 110e of the lighting fixture 10e is inserted.

[0140] The outer shell portion 42e forms a part of the outer shell of the second lighting fixture 30e and constitutes the design portion of the appearance of the second lighting fixture 30e. As shown in FIGS. 51 and 53, the outer shell portion 42e is formed in a substantially quadrangular prism-shaped box with an opening 42a formed on one surface. The outer shell portion 42e is attached to the second pedestal portion 48e of the pedestal portion 45e so as to cover a part of the base portion 41e. That is, the outer shell portion 42e is attached to the base portion 41e via the pedestal portion 45e. By attaching the outer shell portion 42e to the second pedestal portion 48e of the pedestal portion 45e, the outer shell portion 42e covers the second light source portion 31 except for the exposed portion and houses it inside. Also, by attaching the outer shell portion 42e to the second pedestal portion 48e of the pedestal portion 45e, the second pedestal portion 48e is covered and housed inside. The outer shell portion 42e includes an outer shell main portion 420e, an outer shell longitudinal side portion 427e, an outer shell short side portion 431e, and an outer shell fixture 432.

[0141] The outer shell main portion 420e is a wall located on the surface facing the opening 42a formed in the outer shell portion 42e. Also, the outer shell main portion 420e is a plate-shaped wall formed in a rectangular and elongated shape. The outer shell main portion 420e faces the second light source portion attachment portion 480e in a state where the outer shell portion 42e is attached to the pedestal portion 45e. The outer shell main portion 420e constitutes a part of the lower surface portion of the lighting device 1e in a state where the second lighting fixture 30e is attached to the lighting fixture 10e. As shown in FIGS. 50 to 53, the outer shell main portion 420e has a second light-transmitting member arrangement portion 421e. Note that the outer shell portion 42e is smaller in size compared to the outer shell portion 42 of the lighting device 1 in the first embodiment, and the outer shell main portion 420 of the outer shell portion 42e does not have an operation portion arrangement portion 425 and an operation through portion 426 is not formed.

[0142] The second light-transmitting member arrangement portion 421e is a portion of the outer shell main portion 420e that faces the second light-transmitting portion 312 arranged inside the housing portion 40e. That is, in the second lighting fixture 30e, the second light-transmitting portion 312 is arranged below the second light-transmitting member arrangement portion 421e. The second light-transmitting member arrangement portion 421e has a stepped portion 422e.

[0143] The stepped portion 422e is a flat wall portion formed such that the wall of the outer main portion 420e is recessed, and a step is formed between the stepped portion 422e and the outer surface 420a of the outer main portion 420e. The stepped portion 422e is a portion recessed inside the outer portion 42e. As shown in FIGS. 51 and 53, a light-transmitting portion through-hole 423e and a screw hole 424e are formed in the stepped portion 422e. The light-transmitting portion through-hole 423e is a through-hole formed in the stepped portion 422e. The light-transmitting portion through-hole 423e is formed at a position facing the lens portion 313, which is the second light-emitting portion, when the outer portion 42e is attached to the pedestal portion 45e. In a state where the outer portion 42e is attached to the second pedestal portion 48e, the lens portion 313 of the second light-transmitting portion 312 disposed inside the housing portion 40e is exposed to the outside from the stepped portion 422e through the light-transmitting portion through-hole 423e. Further, in a state where the outer portion 42e is attached to the base portion 41e via the second pedestal portion 48e, a part of the lens portion 313 of the second light-transmitting portion 312 disposed inside the housing portion 40e protrudes to the outside from the stepped portion 422e through the light-transmitting portion through-hole 423e. The screw holes 424e are formed at two locations in the stepped portion 422e with the light-transmitting portion through-hole 423e in between. The screw holes 424e are holes through which an outer portion fixing tool 432 for fixing the outer portion 42e to the second pedestal portion 48e of the pedestal portion 45e is inserted.

[0144] The outer longitudinal side portion 427e constitutes the side wall of the outer portion 42e. The outer longitudinal side portion 427e is formed so as to rise from the side of the outer main portion 420e along the longitudinal direction (X-axis direction) of the outer main portion 420e. The outer longitudinal side portion 427e has an outer outer portion 428e and an outer inner portion 429e. The outer outer portion 428e and the outer inner portion 429e are formed so as to face each other. Further, in a state where the outer portion 42e is attached to the base portion 41e via the second pedestal portion 48e, the outer inner portion 429e is disposed on the side where the base overhanging portion 415e extends from the base bottom portion 410e with respect to the base portion 41e. Further, in a state where the outer portion 42e is attached to the base portion 41e via the second pedestal portion 48e, the outer inner portion 429e forms a side wall from the outer surface 420a to the first pedestal overhanging portion 473e described later. And in a state where the second lighting fixture 30e is attached to the lighting fixture 10e, the outer outer portion 428e constitutes the outer side wall in the short side direction (Y-axis direction) of the lighting device 1e and the second lighting fixture 30e. Also, in the short side direction (Y-axis direction) of the lighting device 1e, the outer inner portion 429e constitutes the inner side wall of the second lighting fixture 30e with respect to the outer outer portion 428e.

[0145] The outer circumferential inner side portion 429e functions as a partition wall that separates the housing portion 18 of the lighting fixture 10e and the respective components of the second lighting fixture 30e as shown in FIG. 49 in a state where the second lighting fixture 30e is attached to the lighting fixture 10e. That is, the outer circumferential portion 42e is arranged in the lighting fixture 10e so as to separate the lens portion 313 which is the second light emitting portion and the main portion 220 which is the first light emitting portion in a state where the first lighting fixture 20 is attached to the lighting fixture 10e. And, the housing portion 18 which is the first space and the second space 45 are separated by the outer circumferential portion 42e. The outer circumferential inner side portion 429e functions as a heat insulating wall, and alleviates the operation heat generated by the first lighting fixture 20 from affecting the respective components such as the second light source portion 31, the control portion 34, and the battery 70 of the second lighting fixture 30e. Further, the outer circumferential inner side portion 429e functions as a heat dissipation path for transmitting the operation heat generated by the first lighting fixture 20 to the outside or to the lighting fixture 10e. That is, the outer circumferential portion 42e functions as a heat transfer path from the housing portion 18 which is the first space to the attached portion 9, or functions as a heat transfer path from the housing portion 18 which is the first space to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30. Further, the outer circumferential portion 42e functions as a heat transfer path from the second space 45 to the attached portion 9, or functions as a heat transfer path from the second space 45 to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30.

[0146] The outer circumferential short side portion 431e constitutes the side wall of the outer circumferential portion 42e. The outer circumferential short side portion 431e is formed so as to rise from the side of the outer circumferential main portion 420e along the short side direction (Y-axis direction) of the outer circumferential main portion 420e. The outer circumferential short side portion 431e constitutes the wall portions at both ends in the longitudinal direction (X-axis direction) of the outer circumferential portion 42e. The outer circumferential short side portion 431e constitutes a part of the side walls at both ends in the longitudinal direction (X-axis direction) of the second lighting fixture 30e in a state where the second lighting fixture 30e is attached to the lighting fixture 10e.

[0147] The outer circumferential long side portion 427e and the outer circumferential short side portion 431e of the outer circumferential portion 42e are arranged so as to penetrate the fixture inclined portion 114e in a state where the second lighting fixture 30e is attached to the lighting fixture 10e.

[0148] The outer shell fixing tool 432 fixes the outer shell portion 42e to the second pedestal portion 48e of the pedestal portion 45e. The outer shell fixing tool 432 is inserted into the screw hole 424e formed in the stepped portion 422e and screwed into the screw hole 482e formed in the second light source unit mounting portion 480e of the second pedestal portion 48e that constitutes the pedestal portion 45e. The outer shell fixing tool 432 is, for example, a knob screw or the like. As shown in FIGS. 51 and 53, a nut 434 may be used for the outer shell fixing tool 432.

[0149] The housing portion 40e forms a mounting structure for the second light source unit 31 and the like by the pedestal portion 45e. The pedestal portion 45e is where the second light source unit 31, the holding portion 317e, the control portion 34, the operation portion 36, the insulating portion 38, etc. are installed, and arranges each component installed on the pedestal portion 45e on the base portion 41e. The pedestal portion 45e has a first pedestal portion 46e and a second pedestal portion 48e. The second pedestal portion 48e is arranged on the first pedestal portion 46e and is attached to the first pedestal portion 46e. Also, the second pedestal portion 48e is arranged on the base portion 41e.

[0150] The first pedestal portion 46e constitutes a structure to which the second pedestal portion 48e, the control portion 34, the operation portion 36, the holding member 50, etc. are attached. As shown in FIGS. 54 and 55, the first pedestal portion 46e is formed in a rectangular prism-shaped box with an opening 46e1 formed on one surface. The first pedestal portion 46e is attached to the base portion 41e so as to cover the base portion 41e. By attaching the first pedestal portion 46e to the base portion 41e, the first pedestal portion 46e covers and houses the control portion 34 and the operation portion 36 except for the exposed portion inside. Also, by attaching the first pedestal portion 46e to the base portion 41e, the first pedestal portion 46e covers and houses the battery 70 and the holding member 50 that holds the battery 70 inside. The first pedestal portion 46e has a pedestal main portion 460e, a pedestal longitudinal side portion 466e, a first pedestal overhanging portion 473e, and a pedestal short side portion 475e.

[0151] The pedestal main part 460e is a wall that constitutes part of the accommodation part 18 that houses the operation part 36, the control part 34, the holding member 50, the battery 70, etc. The pedestal main part 460e is a plate-shaped wall located on the surface facing the opening 46e1 formed in the first pedestal part 46e. Also, the pedestal main part 460e is a plate-shaped wall formed in a rectangular and long shape. The pedestal main part 460e faces the base bottom 410e in a state where the first pedestal part 46e is attached to the base 41e. The pedestal main part 460e faces the fixture inclination part 114e and the fixture side edge part 117e in a state where the second lighting fixture 30 is attached to the lighting fixture 10.

[0152] In the pedestal main part 460e, a main part mounting opening 488e and a main part electric wire insertion hole 490e are formed. The main part mounting opening 488e is a through hole formed in the short side direction (Y-axis direction) from the inner side part of the pedestal main part 460e. The main part mounting opening 488e is formed at two locations along the longitudinal direction (X-axis direction) of the pedestal main part 460e. The pedestal fixing part 483e of the second pedestal part 48e is inserted and fixed into the main part mounting opening 488e. The main part electric wire insertion hole 490e is a through hole formed along the longitudinal direction of the pedestal main part 460e. An electric wire is inserted and arranged in the main part electric wire insertion hole 490e. The pedestal main part 460e has an operation part mounting part 461e and a control part mounting part 464e.

[0153] The operation part mounting part 461e is a part in the first pedestal part 46e where the operation part 36 is mounted. The operation part mounting part 461e faces the operation part 36 arranged inside the first pedestal part 46e. That is, in the second lighting fixture 30e, the operation part 36 is arranged under the operation part mounting part 461e of the first pedestal part 46e. In the operation part mounting part 461e, an operation part through part 462e and a screw hole 463e are formed.

[0154] The operation unit through-hole 462e is a through-hole formed in the operation unit mounting portion 461e. When the operation unit 36 is mounted inside the first pedestal portion 46e, the operation surface portion 360 of the operation unit 36 disposed inside the first pedestal portion 46e is exposed from the wall surface of the operation unit mounting portion 461e through the operation unit through-hole 462e. Also, in a state where the second lighting fixture 30e is attached to the lighting fixture 10e, the operation unit through-hole 462e and the second through-hole 118e communicate with each other. Then, through the operation unit through-hole 462e and the second through-hole 118e, the operation surface portion 360 such as the operation buttons 361 and the indicator lights 362 of the operation unit 36 is exposed to the outside of the instrument main body portion 11e. By the operation surface portion 360 being exposed on the lower surface portion of the lighting device 1, the operator can operate the operation buttons 361 of the operation unit 36 and can recognize the lighting and extinguishing of the indicator lights 362. In the screw hole 463e, an operation unit fixing tool 363 such as a screw or a rivet for fixing the operation unit 36 to the operation unit mounting portion 461e is mounted. The operation unit 36 is attached to the operation unit mounting portion 461e from the inside of the first pedestal portion 46e by the operation unit fixing tool 363.

[0155] The control unit mounting portion 464e is a portion in the first pedestal portion 46e where the control unit 34 is mounted. The control unit mounting portion 464e faces the first case 343 of the control unit 34 disposed inside the first pedestal portion 46e. That is, for the second lighting fixture 30e, the control unit 34 is disposed below the control unit mounting portion 464e of the first pedestal portion 46e. A screw hole 465e is formed in the control unit mounting portion 464e.

[0156] In the screw hole 465e, a control unit fixing tool 346 such as a screw or a rivet for fixing the control unit 34 to the control unit mounting portion 464e is mounted. The control unit 34 is attached to the control unit mounting portion 464e from the inside of the first pedestal portion 46e by the control unit fixing tool 346.

[0157] The longitudinal side portion 466e of the pedestal forms a part of the housing portion 18 that houses the operation unit 36, the control unit 34, the holding member 50, the battery 70, etc. As shown in FIGS. 54 and 55, the longitudinal side portion 466e of the pedestal forms the side wall of the first pedestal portion 46e. The longitudinal side portion 466e of the pedestal is formed so as to rise from the side of the pedestal main portion 460e along the longitudinal direction (X-axis direction) of the pedestal main portion 460e. The longitudinal side portion 466e of the pedestal has an outer pedestal portion 467e and an inner pedestal portion 470e.

[0158] The outer pedestal portion 467e and the inner pedestal portion 470e are formed so as to face each other. In a state where the second lighting fixture 30e is attached to the lighting fixture 10e, as shown in FIG. 46, the outer pedestal portion 467e forms a part of the outer side wall in the short-side direction (Y-axis direction) of the lighting device 1e and the second lighting fixture 30e. Further, the inner pedestal portion 470e forms the inner side wall of the second lighting fixture 30e with respect to the outer pedestal portion 467e in the short-side direction (Y-axis direction) of the lighting device 1e. The inner pedestal portion 470e is arranged along the fixture-side portion 111e of the lighting fixture 10e in a state where the second lighting fixture 30e is attached to the lighting fixture 10e.

[0159] As shown in FIGS. 54 and 55, a holding member fixing portion 468e and a mounting hole 469e are formed in the outer pedestal portion 467e. The holding member fixing portion 468e is a bridge-shaped raised portion. That is, the holding member fixing portion 468e is a plate material raised from the outer pedestal portion 467e, and both ends are continuously formed with the outer pedestal portion 467e. The fixing portion 51 of the holding member 50 is inserted into the holding member fixing portion 468e. The mounting hole 469e is a hole through which a holding member fixture 54 for fixing the holding member 50 to the outer pedestal portion 467e is inserted.

[0160] On the inner side portion 470e of the pedestal, a battery attachment / detachment portion 471e, a side wire insertion hole 472e, and a side mounting opening 489e are formed. The battery attachment / detachment portion 471e is a through hole and is an opening used when inserting and removing the battery 70 into and out of the first pedestal portion 46e. The battery attachment / detachment portion 471e is formed at the position where the battery 70 is disposed within the first pedestal portion 46e. When the outer shell portion 42e of the lighting device 1e is attached to the second pedestal portion 48e of the pedestal portion 45e, at least a part of the battery attachment / detachment portion 471e is covered by the outer shell portion 42e. Note that the battery attachment / detachment portion 471e may be continuously formed with the pedestal main portion 460e together with the inner side portion 470e of the pedestal. The side wire insertion hole 472e is a through hole and serves as a wiring path between the first lighting fixture 20 and the second lighting fixture 30e. The side mounting opening 489e is formed along the longitudinal direction (X-axis direction) of the inner side portion 470e of the pedestal starting from the main portion mounting opening 488e.

[0161] The first pedestal overhanging portion 473e is a bent piece formed at the end of the inner side portion 470e of the pedestal. The first pedestal overhanging portion 473e is formed at the end on the opposite side of the pedestal main portion 460e via the inner side portion 470e of the pedestal. The first pedestal overhanging portion 473e, together with the base overhanging portion 415e, is an attachment portion for attaching the second lighting fixture 30e to the fixture bottom 110e of the lighting fixture 10e. When attaching the second lighting fixture 30e to the fixture bottom 110e of the lighting fixture 10e, the first pedestal overhanging portion 473e faces and abuts against the base overhanging portion 415e and the fixture bottom 110e. That is, the first pedestal overhanging portion 473e is sandwiched between the base overhanging portion 415e and the fixture bottom 110e when the second lighting fixture 30e is attached to the lighting fixture 10e. A screw hole 474e is formed in the first pedestal overhanging portion 473e. The screw hole 474e is a hole through which a second lighting fixture fixing tool 80 for fixing the second lighting fixture 30e to the fixture bottom 110e is inserted.

[0162] The short-side portion 475e of the pedestal forms a part of the housing portion 18 that houses the operation unit 36, the control unit 34, the holding member 50, the battery 70, etc. As shown in FIGS. 54 and 55, the short-side portion 475e of the pedestal forms the side wall of the first pedestal portion 46e. The short-side portion 475e of the pedestal is formed so as to rise from the side of the pedestal main portion 460e along the short-side direction (Y-axis direction) of the pedestal main portion 460e. The short-side portion 475e of the pedestal forms the wall portions at both ends in the longitudinal direction (X-axis direction) of the first pedestal portion 46e. The short-side portion 475e of the pedestal forms a part of the side walls at both ends in the longitudinal direction (X-axis direction) of the second lighting fixture 30e in a state where the second lighting fixture 30e is attached to the lighting fixture 10e.

[0163] The second pedestal portion 48e is a pedestal for attaching the second light source portion 31 to the first pedestal portion 46e. The second pedestal portion 48e is attached to the pedestal main portion 460e of the first pedestal portion 46e. The second pedestal portion 48e includes a second light source portion attachment portion 480e, a pedestal fixing portion 483e, a connecting portion 485e, a pedestal side portion 486e, and a second pedestal portion fixture 487e.

[0164] The second light source portion attachment portion 480e is a plate-shaped portion. The second light source portion 31 and the insulating portion 38 are placed and attached on the second light source portion attachment portion 480e. The outer portion 42e is also attached to the second light source portion attachment portion 480e. The second light source portion attachment portion 480e receives the operating heat generated by the second light source portion 31 and dissipates the received heat. When the second pedestal portion 48e is attached to the first pedestal portion 46e, the second light source portion attachment portion 480e faces the pedestal main portion 460e of the first pedestal portion 46e. Two screw holes 481e and 482e are formed in the second light source portion attachment portion 480e. The screw holes 481e are formed at two positions corresponding to the main screw holes 323 of the second light source portion 31. A second light source portion fixture 327 for fixing the second light source portion 31 to the second light source portion attachment portion 480e is attached to the screw holes 481e. The screw holes 482e are formed at two positions corresponding to the screw holes 424e of the outer portion 42e. An outer portion fixture 432 for fixing the outer portion 42e to the second light source portion attachment portion 480e is attached to the screw holes 482e.

[0165] The pedestal fixing part 483e is a bent piece for attaching the second pedestal part 48e to the first pedestal part 46e and fixing the second pedestal part 48e to the first pedestal part 46e. The pedestal fixing part 483e is formed at the longitudinal end of the second pedestal part 48e and is formed at two locations with the second light source unit mounting part 480e in between. When attaching the second pedestal part 48e to the first pedestal part 46e, the pedestal fixing part 483e is inserted into the main part mounting opening 488e formed in the first pedestal part 46e and abuts against the pedestal main part 460e of the first pedestal part 46e from the inside of the first pedestal part 46e. A screw hole 484e is formed in the pedestal fixing part 483e. A second pedestal part fixing tool 487e such as a screw or a rivet for fixing the second pedestal part 48e to the first pedestal part 46e is mounted in the screw hole 484e.

[0166] The connecting part 485e is a plate-shaped part that connects the second light source unit mounting part 480e and the pedestal fixing part 483e to each other. The connecting part 485e is formed at the longitudinal end (i.e., the short side part) in the X-axis direction of the second light source unit mounting part 480e. The connecting part 485 arranges the second light source unit mounting part 480e above the pedestal main part 460e of the first pedestal part 46e. The connecting part 485e functions as a heat dissipation path for transmitting the operating heat generated by the second light source 31 to the base 41e and the lighting fixture 10e.

[0167] The pedestal side part 486 is a bent piece provided at the longitudinal side part of the second light source unit mounting part 480e. The pedestal side part 486 restricts the elastic deformation of the holding member 50 when the outer shell part 42e is attached to the second pedestal part 48e.

[0168] The second pedestal part fixing tool 487e is, for example, a screw or a rivet. The second pedestal part fixing tool 487e is used to attach the second pedestal part 48e to the first pedestal part 46e. The second pedestal part fixing tool 487e is inserted through the screw hole 484e formed in the pedestal fixing part 483e that constitutes the second pedestal part 48e, and fixes the pedestal fixing part 483e of the second pedestal part 48e and the pedestal main part 460e of the first pedestal part 46e.

[0169] (Holding member 50) FIG. 56 is a cross-sectional view taken along line F-F of the lighting device 1e in FIG. 45. FIG. 57 is a schematic cross-sectional view showing the attachment and detachment of the battery 70 in FIG. 56. Next, the holding member 50 will be described with reference to FIGS. 54 to 57. The holding member 50 is an elastic member such as a leaf spring, and holds the battery 70 disposed in the first pedestal portion 46e of the housing portion 40e. The holding member 50 includes a fixing portion 51, a holding portion 53, and a holding member fixture 54.

[0170] The fixing portion 51 is a flat plate-like material portion. As shown in FIGS. 54 and 55, the fixing portion 51 is inserted into a holding member fixing portion 468e formed in the pedestal outer portion 467e, engages with the pedestal outer portion 467e, and is attached to the pedestal outer portion 467e. The fixing portion 51 is in contact with the pedestal outer portion 467e in a state of being inserted into the holding member fixing portion 468e formed in the pedestal outer portion 467e. A fixing hole 52 is formed in the fixing portion 51. A holding member fixture 54 for fixing the holding member 50 to the pedestal outer portion 467e is attached to the fixing hole 52. When the second lighting fixture 30e is attached to the lighting fixture 10e, as shown in FIG. 56, the fixing portion 51 is arranged to be substantially perpendicular to the base bottom portion 410e.

[0171] The holding portion 53 is integrally formed with the fixing portion 51 and is a plate-like portion rising from the fixing portion 51. The holding portion 53 is a plate-like portion extending in the horizontal direction when assuming a plate-like portion extending in the vertical direction on the plate surface of the fixing portion 51. The holding portion 53 faces the base bottom portion 410e as shown in FIG. 56 in a state where the holding member 50 is attached to the pedestal outer portion 467e. The holding portion 53 is inclined with respect to the plate surface of the fixing portion 51 so as to approach the fixing portion 51, and it is desirable that the angle between the plate surface of the holding portion 53 and the plate surface of the fixing portion 51 is 90 degrees or less. The holding portion 53 is inclined so as to approach the base bottom portion 410e in a state where the holding member 50 is attached to the pedestal outer portion 467e.

[0172] The holding part 53 has spring properties and elastically deforms. As shown in Fig. 56, when the second lighting fixture 30e is attached to the lighting fixture 10e, the holding part 53 is arranged to extend in the left - right direction (Y - axis direction) of the lighting device 1. Also, as shown in Fig. 56, the holding part 53 holds the battery 70. As shown in Fig. 57, when the outer part 42e is removed from the pedestal part 45e, the holding part 53 allows elastic deformation and can attach / detach the battery 70, or remove / attach it. As shown in Fig. 53, when the outer part 42e is removed from the second pedestal part 48e, the battery attachment / detachment part 471e formed in the first pedestal part 46e is exposed. By the operator removing the first lighting fixture 20 and the outer part 42e from the lighting fixture 10e, the battery attachment / detachment part 471e can be exposed in the accommodating part 18, and the operator can insert and remove the battery 70 into and from the first pedestal part 46e through the battery attachment / detachment part 471e. Therefore, it is desirable that a through - hole communicating with the battery attachment / detachment part 471e is formed in the instrument side part 111e, for example, when the second lighting fixture 30e is attached to the lighting fixture 10e.

[0173] The holding member fixture 54 is a member that fixes the holding member 50 to the outer pedestal part 467e. The holding member fixture 54 is, for example, a screw, a rivet, etc. The holding member fixture 54 is inserted through the fixing hole 52 formed in the fixing part 51 and the mounting hole 469e formed in the outer pedestal part 467e.

[0174] (Battery 70) The battery 70 is supported by the holding part 53 of the holding member 50 below the battery 70, and the downward movement of the battery 70 is restricted. In a state where the first lighting fixture 20 is removed from the accommodating part 18 and the outer part 42e is removed from the pedestal part 45e, as shown in Fig. 57, by elastically deforming the holding member 50, the operator can remove the battery 70 to the side. In Fig. 57, the arrow S indicates the direction of attaching the battery 70, the outer part 42e, or the first lighting fixture 20 to the lighting fixture 10e, and the arrow R indicates the direction of removing the battery 70, the outer part 42e, or the first lighting fixture 20 from the lighting fixture 10e.

[0175] <Operation and Effect of Lighting Device 1, etc.> The operation and effect of lighting device 1, lighting device 1b, lighting device 1c, lighting device 1d, and lighting device 1e will be described. In the following description, the operation and effect of lighting device 1 will be described, but unless otherwise specified, these operation and effects are also applicable to lighting device 1b, lighting device 1c, lighting device 1d, and lighting device 1e.

[0176] As described above, in the state where the first lighting fixture 20 is attached to the lighting appliance 10, for lighting device 1, the outer shell portion 42 is arranged on the lighting appliance 10 so as to separate the lens portion 313 which is the second light emitting portion and the main portion 220 which is the first light emitting portion. Therefore, in lighting appliance 10, lighting device 1 can arrange the first lighting fixture 20 and the second lighting fixture 30 side by side. Since lighting device 1 can arrange the first lighting fixture 20 and the second lighting fixture 30 side by side in lighting appliance 10, in the long lighting device 1, the first lighting fixture 20 and the second lighting fixture 30 can be arranged side by side in the short side direction (Y-axis direction) of lighting device 1. As a result, when designing and manufacturing lighting device 1, it is not necessary to design and manufacture according to the length dimensions different from those of general lighting devices and general commonly used lighting fixtures, and a lighting device 1 equipped with an emergency lighting fixture with excellent economy and constructability can be provided. Similarly, in the state where the first lighting fixture 20 is attached to the lighting appliance 10e, for lighting device 1e, the outer shell portion 42e is arranged on the lighting appliance 10e so as to separate the lens portion 313 which is the second light emitting portion and the main portion 220 which is the first light emitting portion. Therefore, in lighting appliance 10e, lighting device 1e can arrange the first lighting fixture 20 and the second lighting fixture 30e side by side. Since lighting device 1e can arrange the first lighting fixture 20 and the second lighting fixture 30e side by side in lighting appliance 10e, in the long lighting device 1e, the first lighting fixture 20 and the second lighting fixture 30e can be arranged side by side in the short side direction (Y-axis direction) of lighting device 1e. As a result, when designing and manufacturing lighting device 1e, it is not necessary to design and manufacture according to the length dimensions different from those of general lighting devices and general commonly used lighting fixtures, and a lighting device 1e equipped with an emergency lighting fixture with excellent economy and constructability can be provided.

[0177] Further, the lighting fixture 10 is formed in a long shape, and the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short side direction (Y-axis direction) of the lighting fixture 10. As a result, when designing and manufacturing the lighting device 1, it is not necessary to perform design and manufacturing according to the length dimensions different from those of general lighting devices and general commonly used lighting fixtures, and a lighting device 1 provided with an emergency lighting fixture excellent in economy and constructability can be provided.

[0178] Further, the second lighting fixture 30 is arranged outside the housing portion 18. Therefore, when the operator attaches and detaches the first lighting fixture 20 to and from the lighting fixture 10, it is not necessary to remove the second lighting fixture 30. As a result, the operator can easily attach and detach the first lighting fixture 20 that is commonly used, and it becomes easy to perform maintenance of the lighting device 1.

[0179] Further, the second lighting fixture 30 is attached to the lighting fixture 10. Since the second lighting fixture 30 is attached to the lighting fixture 10, the operator can remove the second lighting fixture 30 from the lighting fixture 10 or attach the second lighting fixture 30 to the lighting fixture 10. Therefore, the operator can repair and replace the second lighting fixture 30, and it becomes easy to perform maintenance of the lighting device 1.

[0180] Further, the outer shell portion 42 is formed using a light-shielding material. Therefore, the lighting device 1 can prevent unnecessary light from leaking from the second lighting fixture 30. Similarly, the outer shell portion 42e is formed using a light-shielding material. Therefore, the lighting device 1e can prevent unnecessary light from leaking from the second lighting fixture 30e.

[0181] In addition, the outer shell portion 42 is formed using a flame-retardant or non-combustible material. Therefore, the lighting device 1 can prevent problems caused by the heat generation of the first lighting fixture 20 from affecting the second lighting fixture 30, and can also prevent problems caused by the heat generation of the second lighting fixture 30 from affecting the first lighting fixture 20. Similarly, the outer shell portion 42e is formed using a flame-retardant or non-combustible material. Therefore, the lighting device 1e can prevent problems caused by the heat generation of the first lighting fixture 20 from affecting the second lighting fixture 30e, and can also prevent problems caused by the heat generation of the second lighting fixture 30e from affecting the first lighting fixture 20.

[0182] In addition, the outer shell portion 42 is detachably attached to the second lighting fixture 30. Therefore, it is easier for the operator to perform maintenance on the second lighting fixture 30. Similarly, the outer shell portion 42e is detachably attached to the second lighting fixture 30e. Therefore, it is easier for the operator to perform maintenance on the second lighting fixture 30e.

[0183] In addition, the maximum dimension of the second lighting fixture 30 is smaller than the maximum dimension of the first lighting fixture 20. Also, the first direction is the longitudinal direction of the lighting fixture 10, and the second direction is the short-side direction of the lighting fixture 10. Therefore, the lighting device 1 can ensure the amount of light that illuminates the lighting space during normal use. Similarly, the maximum dimension of the second lighting fixture 30e is smaller than the maximum dimension of the first lighting fixture 20. Also, the first direction is the longitudinal direction of the lighting fixture 10e, and the second direction is the short-side direction of the lighting fixture 10e. Therefore, the lighting device 1e can ensure the amount of light that illuminates the lighting space during normal use.

[0184] In addition, the first lighting fixture 20 functions as a regular lighting fixture, and the second lighting fixture 30 functions as an emergency lighting fixture. Therefore, the lighting device 1 can provide regular lighting when power such as commercial power is supplied, and can also provide lighting even in an emergency when power is not supplied from outside the lighting device 1 due to a power outage or the like. Similarly, the first lighting fixture 20 functions as a regular lighting fixture, and the second lighting fixture 30e functions as an emergency lighting fixture. Therefore, the lighting device 1e can provide regular lighting when power such as commercial power is supplied, and can also provide lighting even in an emergency when power is not supplied from outside the lighting device 1e due to a power outage or the like.

[0185] Further, in the lighting device 1, the accommodating portion 18 which is the first space and the second space 45 are separated by the outer portion 42. Since the air in the first space whose temperature rises due to the operating heat of the first light source portion 21 is separated by the outer portion 42 in the lighting device 1, it does not move to the second space 45. Therefore, no thermal stress is applied to the components of the second lighting fixture 30 in the lighting device 1. As a result, in the lighting device 1, the emergency lighting fixture is hardly affected by the operating heat of the regular lighting fixture. Similarly, in the lighting device 1e, the accommodating portion 18 which is the first space and the second space 45 are separated by the outer portion 42e. Since the air in the first space whose temperature rises due to the operating heat of the first light source portion 21 is separated by the outer portion 42e in the lighting device 1e, it does not move to the second space 45. Therefore, no thermal stress is applied to the components of the second lighting fixture 30e in the lighting device 1e. As a result, in the lighting device 1e, the emergency lighting fixture is hardly affected by the operating heat of the regular lighting fixture.

[0186] In addition, the outer shell portion 42 of the lighting device 1 is formed using a light-shielding and heat-conductive material. Therefore, the lighting device 1 can transfer the heat of the air in the first space whose temperature rises due to the operating heat of the first light source unit 21 through the outer shell portion 42 and dissipate it to the outside of the lighting device 1. As a result, no thermal stress is applied to the components of the second lighting fixture 30. As a result, in the lighting device 1, the emergency lighting fixture is hardly affected by the operating heat of the regular lighting fixture. Similarly, the outer shell portion 42e of the lighting device 1e is formed using a light-shielding and heat-conductive material. Therefore, the lighting device 1e can transfer the heat of the air in the first space whose temperature rises due to the operating heat of the first light source unit 21 through the outer shell portion 42e and dissipate it to the outside of the lighting device 1e. As a result, no thermal stress is applied to the components of the second lighting fixture 30e. As a result, in the lighting device 1, the emergency lighting fixture is hardly affected by the operating heat of the regular lighting fixture.

[0187] In addition, the outer shell portion 42 functions as a heat transfer path from the first space to the mounted portion 9, or functions as a heat transfer path from the first space to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30. As a result, no thermal stress is applied to the components of the second lighting fixture 30. As a result, in the lighting device 1, the emergency lighting fixture is hardly affected by the operating heat of the regular lighting fixture. Similarly, the outer shell portion 42e functions as a heat transfer path from the first space to the mounted portion 9, or functions as a heat transfer path from the first space to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30. As a result, no thermal stress is applied to the components of the second lighting fixture 30e. As a result, in the lighting device 1, the emergency lighting fixture is hardly affected by the operating heat of the regular lighting fixture.

[0188] In addition, the outer shell portion 42 functions as a heat transfer path from the second space 45 to the mounted portion 9, or functions as a heat transfer path from the second space 45 to the illumination space illuminated by the first lighting fixture 20 or the second lighting fixture 30. Therefore, in the lighting device 1, heat is easily dissipated from the second space 45 to the outside, and thermal stress is less likely to be applied to the components of the second lighting fixture 30. As a result, in the lighting device 1, the emergency lighting fixture is less likely to be affected by the operating heat of the regular lighting fixture. Similarly, the outer shell portion 42e functions as a heat transfer path from the second space 45 to the mounted portion 9, or functions as a heat transfer path from the second space 45 to the illumination space illuminated by the first lighting fixture 20 or the second lighting fixture 30e. Therefore, in the lighting device 1e, heat is easily dissipated from the second space 45 to the outside, and thermal stress is less likely to be applied to the components of the second lighting fixture 30e. As a result, in the lighting device 1e, the emergency lighting fixture is less likely to be affected by the operating heat of the regular lighting fixture.

[0189] In addition, when the battery 70 is disposed inside the housing portion 40 in the lighting device 1, it is in contact with the inner surface of the housing portion 40 and is held inside the second space 45 by a holding member 50 attached to the housing portion 40. And, the holding member 50 has a narrower movable range when the outer shell portion 42 is attached to the pedestal portion 44 than when the outer shell portion 42 is not attached to the pedestal portion 44. Therefore, the battery 70 is reliably held by the holding member 50 when the outer shell portion 42 is attached to the pedestal portion 44. As a result, the lighting device 1 can reliably hold the battery 70 serving as an emergency power source while having a simple configuration.

[0190] In addition, the holding member 50 elastically deforms within a movable range that allows the battery 70 to be detached when the outer shell portion 42 is not attached to the pedestal portion 44. When the outer shell portion 42 is removed from the base portion 41, since elastic deformation of the holding portion 53 is permitted, an operator can easily attach or detach the battery 70 to / from the lighting device 1.

[0191] In addition, the outer shell portion 42 is formed in a box shape, and a light-transmitting portion through-hole 423, which is a through-hole, is formed at a position facing the lens portion 313 that is the second light-emitting portion. Therefore, the outer shell portion 42 can expose the second light-emitting portion housed inside and can constitute the outer shell of the second lighting fixture 30.

[0192] Further, the pedestal portion 44 forms an opening 44a at the position where the battery 70 is disposed. In a state where the outer shell portion 42 is attached to the pedestal portion 44, at least a part of the opening 44a is covered by the outer shell portion 42. By removing the outer shell portion 42 that covers the opening 44a, the opening 44a can be exposed, and an operator can easily attach and detach the battery 70 to and from the lighting device 1 through the opening 44a, or can attach and detach it. Similarly, the pedestal portion 45e forms a battery attachment / detachment portion 471e at the position where the battery 70 is disposed. In a state where the outer shell portion 42e is attached to the pedestal portion 45e, at least a part of the battery attachment / detachment portion 471e is covered by the outer shell portion 42e. By removing the outer shell portion 42e that covers the battery attachment / detachment portion 471e, the battery attachment / detachment portion 471e can be exposed, and an operator can easily attach and detach the battery 70 to and from the lighting device 1 through the battery attachment / detachment portion 471e, or can attach and detach it.

[0193] As described above, the embodiments and modification examples of the present invention have been described, but these embodiments and modification examples may be implemented in combination. Alternatively, one of these embodiments and modification examples may be partially implemented. Alternatively, these embodiments and modification examples may be partially combined and implemented. Note that the present invention is not limited to these embodiments and modification examples, and various changes can be made as necessary.

Explanation of Reference Numerals

[0194] 1 Lighting device, 1b Lighting device, 1c Lighting device, 1d Lighting device, 1e Lighting device, 9 Mounting portion, 10 Lighting fixture, 10b Lighting fixture, 10c Lighting fixture, 10d Lighting fixture, 10e Lighting fixture, 11 Appliance body portion, 11b Appliance body portion, 11c Appliance body portion, 11d Appliance body portion, 11e Appliance body portion, 12 Appliance end portion, 12b Appliance end portion, 12c Appliance end portion, 12d Appliance end portion, 12e Appliance end portion, 13 Appliance-side connector, 14 Appliance-side terminal block, 15 Appliance-side fixture, 16 Appliance-side power line, 18 Accommodation portion, 20 First lighting fixture, 21 First light source portion, 22 First light-transmitting portion, 23 Power supply portion, 24 Support portion, 30 Second lighting fixture, 30a Second lighting fixture, 30e Second lighting fixture, 31 Second light source portion, 34 Control portion, 36 Operation portion, 38 Insulating portion, 40 Housing portion, 40a Housing portion, 40e Housing portion, 41 Base portion, 41e Base portion, 42 Outer portion, 42a Opening, 42e Outer portion, 44 Pedestal portion, 44a Opening, 45 Second space, 45e Pedestal portion, 46e First pedestal portion, 46e1 Opening, 48e Second pedestal portion, 50 Holding member, 51 Fixing portion, 52 Fixing hole, 53 Holding portion, 53a Holding portion, 53b Side wall fixing portion, 53b1 Side wall fixing portion, 53c Holding bent portion, 53c1 First inclined portion, 53c2 Second inclined portion, 54 Holding member fixing tool, 60 Suspension cord, 70 Battery, 70a Battery, 80 Second lighting fixture fixing tool, 110 Appliance bottom, 110e Appliance bottom, 111 Appliance side portion, 111d Appliance side portion, 111e Appliance side portion, 112 Wire passing hole, 113 Screw hole, 114 Appliance inclined portion, 114b Appliance inclined portion, 114d Appliance inclined portion, 114e Appliance inclined portion, 115 Appliance through portion, 115b Appliance through portion, 115d Appliance through portion, 115e Appliance through portion, 116e First through portion, 117 Appliance side edge portion, 117b Appliance side edge portion, 117c Appliance side edge portion, 117d Appliance side edge portion, 117e Appliance side edge portion, 118e Second through portion, 120 End plate, 120b End plate, 120c End plate, 121 Knockout portion, 121c Knockout portion, 160 Wire portion, 161 Connector, 210 First light source substrate, 211 First light source element, 220 Main portion, 221 Mounting portion, 222 First incident portion, 223 First emission portion, 226 Cover portion, 230 Case, 240 Base portion, 241 Upright portion, 242 Power supply portion arrangement portion, 310 Second light source substrate, 311 Second light-emitting element, 312Second light-transmitting part, 313 lens part, 314 second incident part, 315 second exit part, 316 mounting part, 317 holding part, 317e holding part, 318 main holding part, 318a side wall, 318e main holding part, 319 lens holding part, 320 holding projection, 321 mounting guide, 322 through-hole, 323 main part screw hole, 324 auxiliary holding part, 324e auxiliary holding part, 325 auxiliary part screw hole, 326 connection part, 327 second light source part fixture, 340 control board, 341 control circuit component, 342 case, 343 first case, 343a case bottom wall, 343b case side wall, 344 screw hole, 345 second case, 346 control part fixture, 360 operation surface part, 361 operation button, 362 indicator lamp, 363 operation part fixture, 380 insulating part screw hole, 410 base bottom part, 410e base bottom part, 411 holding member fixing part, 412 screw hole, 413 mounting hole, 414 base side part, 414e base side part, 415 base overhanging part, 415e base overhanging part, 416 screw hole, 416e screw hole, 420 outer main part, 420a outer surface, 420e outer main part, 421 second light-transmitting member arrangement part, 421e second light-transmitting member arrangement part, 422 step part, 422e step part, 423 light-transmitting part through-hole, 423e light-transmitting part through-hole, 424 screw hole, 424e screw hole, 425 operation part arrangement part, 426 operation through-hole, 427 outer longitudinal side part, 427e outer longitudinal side part, 428 outer outer side part, 428e outer outer side part, 429 outer inner side part, 429e outer inner side part, 430 notch part, 431 outer short-side part, 431e outer short-side part, 432 outer part fixture, 434 nut, 440 second light source part mounting part, 441 screw hole, 442 screw hole, 443 operation part mounting part, 444 screw hole, 445 control part mounting part, 446 screw hole, 447 connecting part, 460e pedestal main part, 461e operation part mounting part, 462e operation part through-hole, 463e screw hole, 464e control part mounting part, 465e screw hole, 466e pedestal longitudinal side part, 467e pedestal outer side part, 468e holding member fixing part, 469e mounting hole, 470e pedestal inner side part, 471e battery attachment / detachment part, 472e side part wire insertion hole, 473e first pedestal overhanging part, 474e screw hole, 475e pedestal short-side part, 480e second light source part mounting part, 481e screw hole, 482e screw hole, 483e pedestal fixing part, 484e screw hole, 485 connecting part, 485eConnecting part, pedestal side part 486, pedestal side part 486e, second pedestal fixing tool 487e, main part mounting opening 488e, side part mounting opening 489e, main part wire insertion hole 490e.

Claims

1. A lighting fixture attached to a mounted part, a first lighting fixture removably attached to a first space formed in the lighting fixture, a second lighting fixture provided in the lighting fixture, comprising: The first lighting fixture has a first light source part serving as a light source, and a first light emitting part covering the first light source part and transmitting light emitted from the first light source part; The second lighting fixture has a second light source part serving as a light source, a second light emitting part covering the second light source part and transmitting light emitted from the second light source part, a battery for supplying power to the second light source part, and a box-shaped outer part that constitutes the outer shell of the second lighting fixture and forms a second space in which the second light emitting part, the second light source part, and the battery are accommodated; The battery is accommodated inside the outer part, shifted toward the side opposite to the first space, and is detachable from the second lighting fixture in a state where the box-shaped outer part is removed from the second lighting fixture, and at the position where the battery is disposed, the first space and the second space are separated by the outer part. A lighting device.

2. The lighting fixture is formed in a long shape, and the first lighting fixture and the second lighting fixture are arranged side by side in the short direction of the lighting fixture. The lighting device according to Claim 1.

3. The second lighting fixture is disposed outside a housing part in which the first lighting fixture is accommodated. The lighting device according to Claim 1 or Claim 2.

4. The second lighting fixture is attached to the lighting fixture. The lighting device according to any one of Claims 1 to 3.

5. The outer part is formed using a light-shielding and heat-conductive material. The lighting device according to any one of Claims 1 to 4.

6. The outer part functions as a heat transfer path from the first space to the mounted part, or functions as a heat transfer path from the first space to a lighting space illuminated by the first lighting fixture or the second lighting fixture. The lighting device according to any one of Claims 1 to 5.

7. The outer part functions as a heat transfer path from the second space to the mounted part, or functions as a heat transfer path from the second space to a lighting space illuminated by the first lighting fixture or the second lighting fixture. The lighting device according to any one of Claims 1 to 5.

8. The outer part is removably attached to the second lighting fixture. The lighting device according to any one of Claims 1 to 7.

9. ​ ​ When a certain direction is defined as the first direction and a direction perpendicular to the first direction is defined as the second direction in a plane parallel to the mounted portion, in the first direction and the second direction, The lighting device according to any one of claims 1 to 8, wherein the maximum dimension of the second lighting fixture is smaller than the maximum dimension of the first lighting fixture. **Claim 10** The lighting fixture is formed in a long shape, The lighting device according to claim 9, wherein the first direction is the longitudinal direction of the lighting fixture, and the second direction is the lateral direction of the lighting fixture. **Claim 11** The lighting device according to any one of claims 1 to 10, wherein the first lighting fixture functions as a normal lighting fixture, and the second lighting fixture functions as an emergency lighting fixture.

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