Illuminating device

Abstract

To provide an illuminating device in which the light distribution of an emergency lighting light source is inclined by a simple structure.SOLUTION: An illuminating device comprises: a long regular lighting unit; an emergency lighting unit to be lighted at the time of emergency; and an appliance body comprising a back plate to be attached to an attachment object part, and to which the regular lighting unit and the emergency lighting unit are attached side by side. The emergency lighting unit comprises a placement surface part arranged in parallel with the back plate of the appliance body, a light source attached to the placement surface part, and a light distribution control device for performing control so that the optical axis of light emitted from the light source is directed in a predetermined direction with respect to a normal to the back plate of the appliance body.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present disclosure relates to a lighting device, and more particularly to a lighting device having an emergency lighting light source. [Background technology]

[0002] As a lighting device, there is a lighting device in which a normal lighting light source and an emergency lighting light source are attached side by side to the fixture body. Patent Document 1 describes a lighting device that is installed on a landing and provides emergency lighting for an evacuation passage including the stairs and the landing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-050257 Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting device of Patent Document 1, the emergency lighting light source is supported in a state in which it is tilted downward at an angle greater than 0 degrees and less than 90 degrees with respect to the normal of the back panel attached to the mounting portion, in order to distribute light over an illumination range that includes the stairs and landing. In order to tilt the emergency lighting light source, it is necessary to attach a tilting structure to the fixture body and to attach the emergency lighting light source to the tilting structure, which makes the structure of the lighting device complex.

[0005] The present disclosure aims to provide a lighting device with a simple configuration that tilts the light distribution of an emergency lighting light source. [Means for solving the problem]

[0006] The lighting device according to the present disclosure comprises a long normal lighting unit, an emergency lighting unit that lights up in an emergency, and a fixture body having a back plate that is attached to a mounting portion and to which the normal lighting unit and the emergency lighting unit are attached side by side, and the emergency lighting unit has a mounting surface that is arranged parallel to the back plate of the fixture body, a light source attached to the mounting surface, and a light distribution control device that controls the optical axis of light emitted from the light source to be in a predetermined direction with respect to the normal to the back plate of the fixture body. [Effects of the Invention]

[0007] According to the lighting device of the present disclosure, the light distribution control device directs light emitted from the light source in a predetermined direction, making it possible to tilt the light distribution without using a tilting structure for adjusting the mounting angle of the light source itself, and a lighting device in which the light distribution of the emergency lighting light source is tilted with a simple configuration can be obtained. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of an illumination device according to a first embodiment of the present disclosure. [Figure 2] 1 is an exploded perspective view of a fixture and a regular lighting unit of an illumination device according to a first embodiment of the present disclosure. [Figure 3] 1 is an exploded perspective view of a fixture of an illumination device and an emergency lighting unit according to a first embodiment of the present disclosure. [Figure 4] 1 is a perspective view of a lighting device according to a first embodiment of the present disclosure, viewed from the back panel side. [Figure 5] FIG. 1 is a perspective view of a fixture of an illumination device according to a first embodiment of the present disclosure. [Figure 6] 1 is an exploded perspective view of an emergency lighting unit of an illumination device according to a first embodiment of the present disclosure. FIG. [Figure 7] FIG. 2 is a perspective view of a unit case of the lighting device according to the first embodiment of the present disclosure. [Figure 8] 1 is a perspective view of a light source holder of an illumination device according to a first embodiment of the present disclosure. [Figure 9]1 is a cross-sectional view of an illumination device according to a first embodiment of the present disclosure. [Figure 10] 1 is a cross-sectional view of an illumination device according to a first embodiment of the present disclosure. [Figure 11] 2 is an enlarged cross-sectional view showing an emergency lighting unit of the lighting device according to the first embodiment of the present disclosure. FIG. [Figure 12] 10 is a partial cross-sectional view of an illumination device according to a first modification of the first embodiment of the present disclosure. FIG. [Figure 13] 10 is a cross-sectional view of an illumination device according to a second modification of the first embodiment of the present disclosure. FIG. [Figure 14] FIG. 10 is a cross-sectional view of an illumination device according to a second embodiment of the present disclosure. [Figure 15] FIG. 11 is a cross-sectional view of an illumination device according to a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009] The embodiments of the present disclosure will be described with reference to the accompanying drawings. In each drawing, identical or corresponding parts are designated by the same reference numerals, and redundant descriptions are appropriately simplified or omitted. In the following description, for convenience, the positional relationship of each structure may be expressed based on the illustrated state. Note that the present disclosure is not limited to the following embodiments, and any combination of the embodiments, any modification of any component of each embodiment, or any omission of any component of each embodiment are possible within the scope of the present disclosure. Furthermore, in each drawing, the dimensional relationships and shapes of each component may differ from the actual ones. Furthermore, the positional relationships between each component, such as the vertical relationship, are, in principle, those when installed in a usable state.

[0010] Embodiment 1 <Lighting device 1> Fig. 1 is a perspective view of a lighting device 1 according to a first embodiment of the present disclosure. As shown in Fig. 1, the lighting device 1 includes a fixture 2, a normal lighting unit 31, and an emergency lighting unit 32, and is used by being attached to, for example, an attachment portion 9. The attachment portion 9 is, for example, a wall surface of a staircase or a hallway. The lighting device 1 is a multi-function lighting device that combines normal lighting functions and emergency lighting functions.

[0011] Normal lighting is an operation in which the normal lighting unit 31 lights up when external power is supplied from an external power source to the lighting device 1, that is, during normal times. Specifically, external power is supplied from the external power source to a normal power source section (not shown) and converted into normal lighting power, and the normal lighting light-emitting element 313 of the normal lighting unit 31 lights up using the normal lighting power.

[0012] Emergency lighting is an operation in which the emergency lighting unit 32 lights up when external power is not supplied to the lighting device 1 from an external power source due to some cause such as a power outage, that is, in an emergency. In this case, since external power is not available, the emergency lighting unit 32 lights up using emergency lighting power charged in the storage battery 326 (see FIG. 2), which serves as an emergency power source. The storage battery 326, which serves as an emergency power source, is charged by the external power when external power is supplied to the lighting device 1 from an external power source, that is, during normal times.

[0013] The lighting device 1 is elongated in a front view and is attached to the attachment base 9 so that its longitudinal direction is horizontal. In the following description, the longitudinal direction of the lighting device 1 is referred to as the X direction, the thickness direction of the lighting device 1 is referred to as the Y direction, and the short-side direction of the lighting device 1 is referred to as the Z direction. In a front view, the right side of the longitudinal direction is the +X direction, and the left side of the longitudinal direction is the -X direction. In the following description, it is assumed that the lighting device 1 is attached to a wall surface of a staircase, a hallway, or the like. Therefore, the Y direction, which is the thickness direction of the lighting device 1, is the direction normal to the attachment base 9. In addition, the direction away from the attachment base 9 is the front side and is referred to as the +Y direction, and the direction approaching the attachment base 9 is the rear side and is referred to as the -Y direction. In addition, the Z direction, which is the short-side direction of the lighting device 1, is the up-down direction, with the up direction being referred to as the +Z direction and the down direction being referred to as the -Z direction.

[0014] Fig. 2 is an exploded perspective view of the fixture 2 of the lighting device 1 according to the first embodiment of the present disclosure and the normal lighting unit 31. Fig. 3 is an exploded perspective view of the fixture 2 of the lighting device 1 according to the first embodiment of the present disclosure and the emergency lighting unit 32. Fig. 4 is a perspective view of the lighting device 1 according to the first embodiment of the present disclosure as viewed from the back panel 21 side. Fig. 5 is a perspective view of the fixture 2 of the lighting device 1 according to the first embodiment of the present disclosure, with the emergency lighting unit 32 removed from Fig. 4.

[0015] <Apparatus 2> As shown in Figures 2 to 5, the fixture 2 includes a fixture body 20 and a spring 27, and is attached with a normal lighting unit 31 and an emergency lighting unit 32 arranged one above the other, i.e., in the Z direction.

[0016] The cross section of the instrument body 20 in the YZ plane is formed into an angular S-shape. The instrument body 20 is formed into a desired shape by processing such as roll forming or press forming using a metal plate material such as a steel plate, i.e., sheet metal, to obtain rigidity as a structure. The instrument body 20 is not limited to one formed by bending a metal plate material. For example, the instrument body 20 may be formed using a material other than metal, such as resin or ceramic. The instrument body 20 may also be manufactured using other processing methods, such as extrusion molding or three-dimensional modeling.

[0017] The device body 20 is composed of a back plate 21, a front plate 22, a first horizontal plate 23, a second horizontal plate 24, and a third horizontal plate 25. Device ends 26, whose plate surfaces extend in the YZ directions, are provided at both ends of the device body 20 in the X direction.

[0018] The back plate 21 and front plate 22 of the fixture body 20 have plate surfaces extending in the XZ directions, while the first horizontal plate 23, second horizontal plate 24, and third horizontal plate 25 have plate surfaces extending in the XY directions. The first horizontal plate 23 forms the upper surface of the fixture body 20, and the second horizontal plate 24 forms the lower surface of the fixture body 20. The third horizontal plate 25 is disposed between the first horizontal plate 23 and the second horizontal plate 24 in the Z direction, which is the up-down direction.

[0019] The upper end of the back panel 21 is continuous with the rear end of the first horizontal panel 23, and the lower end is continuous with the rear end of the third horizontal panel 25. The upper end of the front panel 22 is continuous with the front end of the third horizontal panel 25, and the lower end is continuous with the front end of the second horizontal panel 24. The front panel 22 and the second horizontal panel 24 are not directly connected, but are connected by a chamfer 20a, which improves the design. However, the chamfer 20a may be omitted, and the front panel 22 and the second horizontal panel 24 may be directly connected. In addition, a flange portion 20b that rises upward and bends backward is formed from the front end of the first horizontal panel 23, which improves the design, protects the translucent cover 464, and eliminates sharp angles in the lighting device 1. The appliance end portion 26 connects both ends of the back plate 21, the front plate 22, the first horizontal plate 23, the second horizontal plate 24, and the third horizontal plate 25 in the X direction.

[0020] The back panel 21 is disposed so that its back surface is aligned with the attachment portion 9, and is attached to the attachment portion 9. The normal direction N of the back panel 21 is, in other words, the direction of the normal to the attachment portion 9. The attachment portion 9 is, for example, a wall surface of a staircase or a staircase landing. For example, holes (not shown) are formed in the back panel 21, and the lighting device 1 is fixed to the attachment portion 9 by bolts or the like inserted into the holes.

[0021] A spring 27 is provided on the front surface of the back plate 21. The spring 27 is a part to which a connecting part (not shown) of the service lighting unit 31 is connected when the service lighting unit 31 is attached to the fixture body 20. In addition to the spring 27, for example, a terminal block (not shown) is also provided on the front surface of the back plate 21. The terminal block is a relay device that supplies external power supplied via an external electric wire from an external power source or the like installed outside the fixture 2.

[0022] A normal lighting unit 31 and a storage battery 326 are attached to the front surface of the back panel 21. The storage battery 326 is disposed at one end in the longitudinal direction of the back panel 21. Charging, discharging, and inspection of the storage battery 326 are controlled, for example, by a control unit (not shown).

[0023] The front plate 22 constitutes the design side surface of the fixture body 20 and is a portion that extends parallel to the back plate 21. The front plate 22 is formed with, for example, a rectangular first opening 22a and a second opening 22b. The emergency lighting unit 32 is disposed on the back side of the front plate 22. The first opening 22a is provided to expose a portion of the emergency lighting unit 32. The second opening 22b is provided to expose the human presence sensor 35 attached to the emergency lighting unit 32.

[0024] The emergency lighting unit 32, which is arranged on the back side of the front panel 22, is formed by the front panel 22, the third horizontal panel 25, and the second horizontal panel 24, and is housed in a recessed portion located on the underside of the fixture body 20, and is supported at the top and bottom by the third horizontal panel 25 and the second horizontal panel 24.

[0025] <Normal lighting unit 31> The service lighting unit 31 has a service light source section 310, a translucent cover 464, a storage battery cover 315, and an end cover 316. The service lighting unit 31 has an elongated shape extending in the X direction. The service lighting unit 31 is arranged on the front side of the back panel 21 together with the storage battery 326. The service lighting unit 31 is formed by the back panel 21, the first horizontal panel 23, and the third horizontal panel 25, and has a shape and dimensions that allow it to be attached to the recessed portion located on the upper side of the fixture body 20. When attached, the top and bottom of the service lighting unit 31 are supported by the first horizontal panel 23 and the third horizontal panel 25.

[0026] The light-transmitting cover 464 covers the regular light source unit 310, protecting the regular light source unit 310 and allowing illumination light from the regular light source unit 310 to pass through to the illumination space. The light-transmitting cover 464 is formed using a light-transmitting material, for example, a resin material such as a synthetic resin, such as polycarbonate (PC), acrylic (PMMA), or polypropylene (PP), or a material other than a synthetic resin, such as glass. The light-transmitting cover 464 can be manufactured by injection molding, blow molding, extrusion molding, or three-dimensional modeling. Depending on the specifications of the illumination device 1, the light-transmitting cover 464 may have a diffusion function that diffuses light emitted from the regular light source unit 310 or a wavelength discrimination function that selectively passes light.

[0027] The battery cover 315 is disposed adjacent to one end of the translucent cover 464, and the end cover 316 is disposed adjacent to the other end of the translucent cover 464. The battery cover 315 covers the front of the battery 326 and protects the battery 326. A normal control unit 317 for controlling the operation of the normal lighting unit 31 is attached to the inside of the end cover 316.

[0028] The normal light source unit 310 includes a normal light emitting element 313 (see FIG. 9 ) and a normal light source substrate 312 (see FIG. 9 ). The normal light emitting element 313 emits light when normal lighting power is supplied. The normal light emitting element 313 is, for example, a light emitting diode (LED). The normal light emitting element 313 may be a solid-state laser, a semiconductor laser, an organic electroluminescence (EL), an inorganic EL, or the like. A plurality of normal light emitting elements 313 are mounted on the mounting surface of the normal light source substrate 312 in a row or a staggered pattern along the longitudinal direction. The normal light emitting element 313 is, for example, a pseudo-white LED element, which is a surface-mounted component obtained by packaging an LED chip that emits blue light with a wavelength of 440 to 480 nm and a phosphor that converts the blue light to yellow light.

[0029] The normal light source substrate 312 is formed in an elongated shape and is arranged along the longitudinal direction of the fixture 2. The normal light source substrate 312 is in the shape of a rectangular plate, and the normal light emitting elements 313 are arranged in a row or a staggered pattern on one surface thereof, which is the mounting surface for the normal light emitting elements 313. The normal light source substrate 312 is, for example, a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper-epoxy substrate (FR-3), a paper-phenolic substrate (XPC), a metal-based substrate, or the like.

[0030] <Emergency lighting unit 32> Fig. 6 is an exploded perspective view of emergency lighting unit 32 of lighting device 1 according to embodiment 1 of the present disclosure. Fig. 7 is a perspective view of unit case 34 of lighting device 1 according to embodiment 1 of the present disclosure. Fig. 8 is a perspective view of light source holder 330 of lighting device 1 according to embodiment 1 of the present disclosure. Fig. 9 is a cross-sectional view of lighting device 1 according to embodiment 1 of the present disclosure, showing a cross section on a plane extending in a direction perpendicular to mounting portion 9 along cross-sectional line AA in Fig. 1.

[0031] The emergency lighting unit 32 has a unit case 34, an emergency control unit 325, a light source holder 330, an emergency light source unit 320, an optical member 323, and a cover unit 50. The emergency lighting unit 32 has an elongated shape extending in the X direction, and is formed by the front plate 22, the third horizontal plate 25, and the second horizontal plate 24, and has a shape and dimensions that allow it to be attached to a recessed portion located on the lower side of the fixture main body 20. When attached to the fixture main body 20, the emergency lighting unit 32 is supported at the top and bottom by the third horizontal plate 25 and the second horizontal plate 24.

[0032] The unit case 34 is a cylindrical member with a bottom that extends in the longitudinal direction. The unit case 34 houses the components of the emergency lighting unit 32. Specifically, the unit case 34 houses the emergency control unit 325, the light source holder 330, the emergency light source unit 320, the optical member 323, and the cover unit 50. The unit case 34 is formed using a material such as resin or ceramic, for example.

[0033] The unit case 34 has a case rear portion 341, a case upper portion 342, a case lower portion 343, and a pair of case end portions 344. That is, the case upper portion 342, the case lower portion 343, and the pair of case end portions 344 each extend from each edge of the case rear portion 341 in a direction intersecting with the case rear portion 341.

[0034] The case upper portion 342 is disposed along the third horizontal plate 25 of the fixture body 20 when the emergency lighting unit 32 is attached to the fixture body 20. The case lower portion 343 is disposed along the second horizontal plate 24 of the fixture body 20 when the emergency lighting unit 32 is attached to the fixture body 20. The case back portion 341 is disposed on the same plane as the back plate 21 when the emergency lighting unit 32 is attached to the fixture body 20. The pair of case end portions 344 are each disposed along the inside of the fixture end portions 26 of the fixture body 20 when the emergency lighting unit 32 is attached to the fixture body 20.

[0035] The unit case 34 is provided with a pair of mounting portions 345, for example, spaced apart in the longitudinal direction, that protrude upward from the upper end of the case upper portion 342. The mounting portions 345 are provided for mounting the unit case 34 to the back plate 21 of the fixture body 20. The unit case 34 is fixed to the back plate 21 of the fixture body 20, for example, by screws (not shown) inserted into through holes 345a formed at the tips of the mounting portions 345.

[0036] The emergency control unit 325 is fixed to the case rear surface 341 of the unit case 34. The emergency control unit 325 mainly controls the operation of the emergency light source unit 320. For example, a human presence sensor 35 is disposed at a position adjacent to the emergency control unit 325 on the case rear surface 341. The human presence sensor 35 is a sensor that detects the presence and location of a person. When the unit case 34 is attached to the fixture body 20, the human presence sensor 35 is exposed from a second opening 22b formed in the front panel 22 of the fixture body 20. Information acquired by the human presence sensor 35 is transmitted to, for example, the normal control unit 317 or the emergency control unit 325.

[0037] The light source holder 330 holds the emergency light source unit 320 and has a mounting surface 331, an upper holder side surface 334, and a lower holder side surface 335. The light source holder 330 is formed by processing such as roll forming or press forming using a metal plate material such as a steel plate, i.e., sheet metal. The light source holder 330 can also function as a heat sink.

[0038] The mounting surface 331 is plate-shaped, and has one surface 331a to which the emergency light source unit 320 is attached. A plurality of fixing holes 331b are formed in the mounting surface 331, and the emergency light source board 321 of the emergency light source unit 320 is fixed by members such as screws inserted into the fixing holes 331b. An insulating sheet 321a is sandwiched between the mounting surface 331 and the emergency light source board 321. When the emergency light emitting element 322 of the emergency light source unit 320 emits light, light L is emitted from the one surface 331a of the mounting surface 331.

[0039] The upper holder side surface portion 334 extends from the upper edge of the mounting surface portion 331 in a direction perpendicular to the mounting surface portion 331, and the lower holder side surface portion 335 extends from the lower edge of the mounting surface portion 331 in a direction perpendicular to the mounting surface portion 331. The upper holder side surface portion 334 extends along the case upper side portion 342, and the lower holder side surface portion 335 extends along the case lower side portion 343. A space is formed between the upper holder side surface portion 334 and the lower holder side surface portion 335, and an emergency control unit 325, for example, may be disposed in this space. A fixing hole 334a is formed in the upper holder side surface portion 334 to attach the light source holder 330 to the unit case 34.

[0040] The back plate 21 of the fixture body 20 and the third horizontal plate 25 are perpendicular to each other. The third horizontal plate 25 faces the upper holder side surface portion 334 of the light source holder 330 and is fastened together. The upper holder side surface portion 334 extends in a direction perpendicular to the mounting surface portion 331. Therefore, the mounting surface portion 331 is configured to be parallel to the back plate 21 of the fixture body 20.

[0041] The emergency light source unit 320 is disposed on one surface 331a of the mounting surface 331. The emergency light source unit 320 is held on the mounting surface 331 by a holder 333 fixed to the mounting surface 331. The holder 333 is fixed to the light source holder 330 using fixing members 333b such as screws, with the emergency light source unit 320 sandwiched between the holder 333 and the mounting surface 331. The holder 333 has a circular ring shape in a plan view seen from a direction parallel to the Y direction, and light L emitted from the emergency light source unit 320 passes through the holder 333.

[0042] The emergency light source unit 320 has an emergency light emitting element 322 and an emergency light source board 321 on which the emergency light emitting element 322 is mounted. The emergency light emitting element 322 emits light when supplied with emergency lighting power. The emergency light emitting element 322 is, for example, a surface-mounted LED element, and is mounted in a predetermined area on the mounting surface of the emergency light source board 321. The emergency light emitting element 322 may be the same as the normal light emitting element 313, and the emergency light source board 321 may be the same as the normal light source board 312. The emergency light source unit 320 may also be of another type, such as a COB (Chip On Board) type.

[0043] The optical member 323 is disposed on the side of the emergency light source unit 320 facing the emergency light emitting element 322 so as to cover the emergency light source unit 320. The optical member 323 is, for example, a lens, and controls the direction of the light L emitted from the emergency light emitting element 322. The optical member 323 is formed using, for example, a translucent material such as a resin material or a glass material.

[0044] The cover portion 50 is arranged on the +Y direction side, which is the emission side of the optical member 323, that is, on the opposite side of the optical member 323 from the emergency light source portion 320, and is a design part that contributes to the appearance, and is also called a decorative cover. When the emergency lighting unit 32 is attached to the fixture body 20, the cover portion 50 is inserted into and exposed through a first opening 22a formed in the front plate 22 of the fixture body 20.

[0045] The cover portion 50 is, for example, box-shaped and has a main surface portion 51, an upper surface portion 52, a lower surface portion 53, and side surfaces 54. The main surface portion 51 is a portion that protrudes toward the emission side from the front plate 22, and has an opening 511 formed in the center for exposing the optical member 323. The upper surface portion 52 and the lower surface portion 53 form the upper and lower surfaces of the cover portion 50, respectively, and the side surfaces 54 form both side surfaces of the cover portion 50.

[0046] <Light distribution control device 100> Fig. 10 is a cross-sectional view of the lighting device 1 according to the first embodiment of the present disclosure, illustrating the trajectory of light L emitted from the emergency lighting unit 32. Fig. 11 is an enlarged cross-sectional view showing the emergency lighting unit 32 of the lighting device 1 according to the first embodiment of the present disclosure.

[0047] 10 and 11, light distribution control device 100 has a function of changing and controlling the optical axis of light L, and includes, for example, optical member 323 and reflective surface unit 512. Therefore, the optical axis of light L emitted from emergency light source unit 320 is controlled when it passes through optical member 323 and when it passes between opening 511 of cover unit 50 and reflective surface unit 512 provided in opening 511, and is emitted to the outside.

[0048] The optical member 323 has a shape that allows light L to be emitted in a desired direction with respect to the normal direction N of the back plate 21 of the fixture body 20. The optical member 323 is disk-shaped in a plan view seen in a direction parallel to the Y direction. The optical member 323 is a so-called concave meniscus lens, in which the dimension in the thickness direction is smaller at the center than at the periphery and increases toward the periphery in a cross-sectional view of a cross section perpendicular to the X direction seen in a direction parallel to the X direction. The desired direction is, in other words, a predetermined direction. The desired direction is downward from the normal direction N of the back plate 21 and forms an angle with respect to the normal direction N that is greater than 0 degrees and less than 90 degrees.

[0049] The optical member 323 has, for example, a concave, spherical inner surface 323a and a convex, spherical outer surface 323b. The inner surface 323a is the incident surface of the optical member 323, and the outer surface 323b is the emission surface of the optical member 323. The optical member 323 is disposed such that, for example, a center position C2 of the curvature of the outer surface 323b coincides with the center position of the emergency light source unit 320.

[0050] For example, the inner surface 323a has a smaller radius of curvature than the outer surface 323b, and the center position C1 is positioned at a position shifted from the center position C2 of the radius of curvature of the outer surface 323b. Specifically, the center position C1 of the radius of curvature of the inner surface 323a is positioned above the center position C2 of the radius of curvature of the outer surface 323b, on the opposite side to the desired direction. By having the optical member 323 have such a shape, the optical axis of the light L passing through the optical member 323 is bent inside the optical member 323 and controlled to be emitted in a direction downward from the normal direction N, that is, in the desired direction.

[0051] The reflecting surface portion 512 changes the optical axis of the light L emitted from the optical member 323. The reflecting surface portion 512 reflects the light L that could not be controlled to the desired angle even by the optical member 323, and controls it so that it is directed at the desired angle. The reflecting surface portion 512 is formed of a flame-retardant material. The reflecting surface portion 512 is continuous with the edge of the opening 511 of the cover portion 50, and is a surface that protrudes in the +Y direction opposite the emergency light source portion 320, that is, the emission side of the light L.

[0052] The reflecting surface portion 512 includes a first inclined surface portion 512a arranged above the opening 511 of the cover portion 50, and a second inclined surface portion 512b arranged below the opening 511 of the cover portion 50. The first inclined surface portion 512a is inclined in the +Z direction, which is upward from the edge of the opening 511 of the cover portion 50 toward the output side, and the second inclined surface portion 512b is inclined in the -Z direction, which is downward from the edge of the opening 511 of the cover portion 50 toward the output side.

[0053] The first inclined surface portion 512a is inclined at a first angle α with respect to the normal direction N, and the second inclined surface portion 512b is inclined at a second angle β with respect to the normal direction N, the absolute value of which is greater than the first angle α. The first angle α is, for example, +30 degrees, and the second angle β is, for example, −60 degrees. Because the first angle α of the first inclined surface portion 512a is smaller than the second angle β of the second inclined surface portion 512b, light L emitted upward from the optical member 323 is more likely to hit the first inclined surface portion 512a, and the trajectory of the light L can be concentrated so that it faces a desired angle. Furthermore, because the second angle β of the second inclined surface portion 512b is larger than the first angle α of the first inclined surface portion 512a, the light L is less likely to hit the first inclined surface portion 512a, and the possibility of the light L being reflected by the second inclined surface portion 512b and being emitted upward can be reduced.

[0054] In this way, the lighting device 1 has the optical member 323 and the reflective surface unit 512 that function as the light distribution control device 100, and the optical member 323 and the reflective surface unit 512 change the optical axis of the light L and control the light L to be emitted at a desired angle, that is, downward from the normal direction N. When the emergency lighting unit 32 is activated in an emergency such as a power outage, the optical axis of the light L emitted from the emergency light source unit 320 is changed by the light distribution control device 100 to face downward, and the light L is emitted toward the hallway or staircase landing. The inclusion of the light distribution control device 100 simplifies the structure of the lighting device 1 because the emergency light source unit 320 only needs to be attached to a mounting surface that is arranged parallel to the back panel 21, and the emergency light source unit 320 itself does not need to be inclined by an inclined structure.

[0055] The optical member 323 controls the light L emitted from the emergency light source unit 320 attached to the mounting surface 331 parallel to the back panel 21 so that it is at a desired angle. For example, compared to achieving the desired angle by providing an inclined structure on the metal plate itself to which the emergency light source unit 320 is attached, the angle deviation is smaller when the mounting surface 331 parallel to the back panel 21 is used as the reference, and therefore a configuration that can irradiate the light L at the desired angle can be easily obtained. Furthermore, a configuration in which light L from a different angle is irradiated at the desired angle can be obtained by simply changing the characteristics of the optical member 323 without changing the fixture main body 20.

[0056] Furthermore, in the reflecting surface portion 512, the first angle α of the upper first inclined surface portion 512a with respect to the normal direction N of the back panel 21 is smaller than the second angle β of the lower second inclined surface portion 512b. Therefore, the light L emitted from the emergency light source unit 320 is likely to hit the first inclined surface portion 512a and is likely to be reflected in a direction downward from the normal direction N. Furthermore, the light L is less likely to hit the second inclined surface portion 512b, and even if it hits and is reflected, it is suppressed from being reflected in a direction upward from the normal direction N.

[0057] Although the optical member 323 and the reflective surface section 512 have been described above as an example of the light distribution control device 100, it is sufficient for the light distribution control device 100 to be provided with either the optical member 323 or the reflective surface section 512. Furthermore, the light distribution control device 100 is not limited to the optical member 323 or the reflective surface section 512, and other configurations can be adopted as long as the function of the light distribution control device 100 can be exhibited.

[0058] 12 is a partial cross-sectional view of an illumination device 1 according to a first modification of the first embodiment of the present disclosure. As shown in FIG. 12, in the illumination device 1 according to the first modification, a first inclined surface portion 512a of a reflecting surface portion 512 is inclined at a first angle α with respect to the normal direction N, and a second inclined surface portion 512b is inclined at a second angle β with respect to the normal direction N, where the second angle β is 90 degrees. In other words, the second inclined surface portion 512b extends from the opening 511 of the cover portion 50 in a direction parallel to the back panel 21 and the placement surface portion 331. With this configuration, it is difficult for light L to hit the reflecting surface portion 512, and thus it is possible to suppress the light L from being reflected upward.

[0059] 13 is a cross-sectional view of lighting device 1 according to Modification 2 of Embodiment 1 of the present disclosure. As shown in FIG. 13, in lighting device 1 according to Modification 2, second inclined surface portion 512b is inclined at a second angle β with respect to normal direction N, where second angle β is greater than 90 degrees. That is, second inclined surface portion 512b is inclined at an angle such that the lower end is closer to mounting portion 9 than emergency light source unit 320, compared to the upper end continuing from opening 511 of cover unit 50. Therefore, reflection of light L by second inclined surface portion 512b can be further suppressed than in Modification 1.

[0060] The lighting device 1 according to the first embodiment described above includes a light distribution control device 100 that controls the orientation of the optical axis of light L emitted from the emergency light source unit 320 relative to the normal direction N of the back panel 21 of the fixture body 20, and can control the light L to be oriented in a desired direction. This eliminates the need to adjust the mounting angle of the emergency light source unit 320 itself, and also eliminates the need for a tilting structure for adjusting the mounting angle, thereby simplifying the structure of the lighting device 1. Furthermore, since the tilting structure is not required, it becomes possible to reuse the housing of a commonly used fixture, such as a ceiling-mounted fixture, for the lighting device 1, thereby promoting the standardization of parts.

[0061] Furthermore, the desired direction, which is the predetermined angle, is an angle greater than 0 degrees and smaller than 90 degrees with respect to the normal direction N of the back panel 21. Therefore, when the lighting device 1 is attached to the wall surface of a staircase or a landing, for example, the light distribution control device 100 can control the irradiation range of the light L from the emergency light source unit 320 so that it includes the floor surfaces of the staircase and the landing.

[0062] Furthermore, the light distribution control device 100 includes, for example, an optical member 323, which controls the direction of light L that enters and exits from the emergency light source unit 320. This eliminates the need for a tilting structure for tilting the light distribution and simplifies the structure of the lighting device 1. The light distribution control device 100 including the optical member 323 reduces the angular deviation of the optical axis of light L from the desired direction compared to when the emergency light source unit 320 itself is provided with a tilting structure, and a configuration that can irradiate light L at a desired angle can be easily obtained. Furthermore, by simply changing the characteristics of the optical member 323 without changing the fixture body 20, a configuration can be obtained in which light L is irradiated at a different angle as the desired angle.

[0063] Furthermore, optical member 323 is, for example, a concave meniscus lens, and has a shape that can change the direction of incident light L and emit it, thereby fulfilling the function of light distribution control device 100.

[0064] Furthermore, the light distribution control device 100 includes, for example, the reflective surface portion 512 of the cover unit 50, and in the reflective surface portion 512, a first angle α of an upper first inclined surface portion 512a with respect to the normal direction N of the back panel 21 is smaller than a second angle β of a lower second inclined surface portion 512b. Therefore, light L emitted from the emergency light source unit 320 is likely to hit the first inclined surface portion 512a and be reflected downward from the normal direction N, and is unlikely to hit the second inclined surface portion 512b, and even if it does hit, it can be suppressed from being reflected upward from the normal direction N.

[0065] Furthermore, since the reflective surface portion 512 is made of a flame-retardant material, the lighting device 1 is protected from combustion, particularly in an emergency such as a fire, and evacuation guidance by the lighting device 1 in an emergency can be continued.

[0066] Furthermore, light distribution control device 100 includes optical member 323 and reflective surface unit 512, and light L emitted from emergency light source unit 320 is directed downward by optical member 323, while light L striking reflective surface unit 512 is reflected downward. Therefore, it is not necessary to attach an inclined structure to emergency light source unit 320 itself, and the direction of light L can be easily controlled to be in a desired direction.

[0067] Furthermore, the light source holder 330 to which the mounting surface portion 331 is attached is disposed in a state in which the mounting surface portion 331 is perpendicular to the third horizontal plate 25 and the upper holder side surface portion 334 faces the third horizontal plate 25, and the light source holder 330 is disposed based on a plane parallel to the back plate 21. Since there is less deviation in angle when the mounting surface portion 331 parallel to the back plate 21 is used as a reference than when a desired angle is achieved by providing an inclined structure, a configuration that can irradiate light L at a desired angle can be easily obtained.

[0068] The back panel 21 is attached to a vertically extending wall surface as the attachment portion 9, and the predetermined angle is downward with respect to the normal direction N. Therefore, the emergency lighting unit 32 can illuminate the floor surface of the stairs or landing located below the normal direction N of the wall surface.

[0069] Embodiment 2 14 is a cross-sectional view of an illumination device 1 according to a second embodiment of the present disclosure. The illumination device 1 according to the second embodiment differs from that according to the first embodiment in the configuration of the reflective surface portion 512. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals and their description will be omitted, and the description will focus on the differences from the first embodiment.

[0070] As shown in FIG. 14 , the lighting device 1 according to the second embodiment has a configuration in which a reflective surface 512 is provided on a holder 333 disposed between the emergency light source 320 and the optical member 323. Similar to the first embodiment, the reflective surface 512 has a first inclined surface 512a and a second inclined surface 512b having a larger inclination angle than the first inclined surface 512a. The inner circumferential surface of the annular portion of the holder 333 increases in diameter with increasing distance from the emergency light source substrate 321 and functions as a reflective surface 512 inclined with respect to the normal direction N. When light L emitted from the emergency light source 320 reaches the reflective surface 512 while passing through the holder 333, it is reflected by the reflective surface 512 at a desired angle. Therefore, the configuration in which the reflective surface 512 is provided on the holder 333 modifies the trajectory of the light L before it enters the optical member 323, reducing the possibility of the light L being emitted upward from the normal direction N.

[0071] As described above, the lighting device 1 according to the second embodiment has a configuration in which the reflecting surface unit 512 is disposed between the emergency light source unit 320 and the optical member 323, and therefore the trajectory of the light L emitted from the emergency light source unit 320 is corrected by the reflecting surface unit 512 and is incident on the optical member 323. This makes it easier for the light L emitted from the optical member 323 to be at a desired angle, making it easier to control the direction of the light L.

[0072] Embodiment 3 15 is a cross-sectional view of an illumination device 1 according to embodiment 3 of the present disclosure. The illumination device 1 according to embodiment 3 differs from embodiment 1 or 2 in the configuration of the reflective surface portion 512. In embodiment 3, parts common to embodiment 1 or 2 are assigned the same reference numerals and description thereof will be omitted, and the description will focus on the differences from embodiment 1 or 2.

[0073] As shown in Fig. 15, in the lighting device 1 according to the third embodiment, the reflective surface portion 512 is disposed between the normal lighting unit 31 and the emergency lighting unit 32. Specifically, the reflective surface portion 512 is provided at the front end portion of the third horizontal plate 25 of the fixture body 20, and extends in an eave-like manner in a direction away from the fixture body 20. The reflective surface portion 512 is provided, for example, so as to be continuous with the third horizontal plate 25. The reflective surface portion 512 is provided so as to be inclined downward at a third angle γ with respect to the normal direction N. The third angle γ is, for example, -30 degrees.

[0074] By providing the eave-shaped reflecting surface portion 512 as in the third embodiment, the light L emitted upward from the optical member 323 is reflected, and the optical axis of the light L can be corrected to point downward. Furthermore, by using the reflecting surface portion 512 according to the third embodiment, it is possible to deal with cases where it is desired to irradiate the light L from the emergency lighting unit 32 further away or closer, depending on the location where the lighting device 1 is installed. Note that the reflecting surface portion 512 may be fixed to the fixture body 20, or may be detachably attached, for example.

[0075] In the lighting device 1 according to the third embodiment described above, the reflective surface portion 512 is provided at the front end portion of the third horizontal plate 25 so as to extend in a direction away from the fixture body 20. This makes it possible to correct the downward direction of the optical axis of the light L emitted upward from the optical member 323 and to change the desired direction in which the light L is emitted, thereby providing a degree of freedom in adjusting the direction of the light L.

[0076] It should be noted that the first to third embodiments can be combined as appropriate.

[0077] Various aspects of the present disclosure are summarized below as appendices.

[0078] (Appendix 1) A long-length, regular lighting unit, An emergency lighting unit that lights up in an emergency, a fixture body having a back plate attached to a mounting portion, the fixture body having the normal lighting unit and the emergency lighting unit attached side by side; Equipped with The emergency lighting unit comprises: a mounting surface portion disposed parallel to the back plate of the device body; a light source attached to the placement surface; a light distribution control device that controls the optical axis of the light emitted from the light source to be in a predetermined direction with respect to a normal line of the back plate of the fixture body; A lighting device having: (Appendix 2) The predetermined direction is at an angle greater than 0 degrees and less than 90 degrees with respect to the normal line of the back plate. 10. The lighting device of claim 1. (Appendix 3) The light distribution control device is an optical member provided to cover the light source, The optical member receives the light emitted from the light source, refracts the light, and outputs the light. 3. The lighting device according to claim 1 or 2. (Appendix 4) The optical member is It is a concave meniscus lens whose thickness is small at the center and large at the periphery. 10. The lighting device of claim 3. (Appendix 5) The light distribution control device is a reflecting surface portion attached to a cover having an opening for exposing an optical member provided to cover the light source, the reflecting surface portion having an inclined surface that widens as it protrudes from an edge of the opening toward an opposite side to the light source, The reflective surface portion has a first inclined surface portion extending at a first inclination angle with respect to the normal line of the back plate, and a second inclined surface portion extending at a second inclination angle with respect to the normal line of the back plate, The second tilt angle is greater than the first tilt angle. 10. The lighting device of claim 1. (Appendix 6) The reflecting surface portion is made of a flame-retardant material. 6. The lighting device of claim 5. (Appendix 7) The light distribution control device is an optical member provided to cover the light source; a reflecting surface portion disposed on the output side of the light source with respect to the optical member; Including, The optical member is controlling the light emitted from the light source so that the light emitted upward, which is opposite to the predetermined direction, is directed downward, which is the predetermined direction; The reflecting surface portion is The light transmitted through the optical member is reflected downward. 10. The lighting device of claim 1. (Appendix 8) The light distribution control device is an optical member provided to cover the light source; a reflecting surface portion disposed between the optical member and the light source; Including, The reflecting surface portion is Among the light emitted from the light source, light emitted upward, which is opposite to the predetermined direction, is reflected downward, which is the predetermined direction. 10. The lighting device of claim 1. (Appendix 9) The light distribution control device is A reflective surface portion extending from between the normal lighting unit and the emergency lighting unit toward the light output side of the light source is included. 10. The lighting device of claim 1. (Appendix 10) The instrument body includes: A side surface portion is provided perpendicular to the back plate and supports a longitudinal surface of the normal lighting unit, The emergency lighting unit comprises: a light source holder to which the mounting surface is attached, The light source holder is attached in a state where the mounting surface is perpendicular to the side surface of the fixture body and the side surface of the light source holder faces the side surface of the fixture body. 10. The lighting device according to any one of claims 1 to 9. (Appendix 11) The back panel is attached to a wall surface extending in a vertical direction, The predetermined direction is a downward direction with respect to the normal line. 11. The lighting device according to any one of claims 1 to 10. (Appendix 12) The back panel is attached to a staircase or a landing, and the staircase or the landing is illuminated. 12. The lighting device according to any one of claims 1 to 11. [Explanation of symbols]

[0079] REFERENCE SIGNS LIST 1 lighting device, 2 fixture, 9 mounting portion, 20 fixture body, 20a chamfer, 20b flange portion, 21 back plate, 22 front plate, 22a first opening, 22b second opening, 23 first horizontal plate, 24 second horizontal plate, 25 third horizontal plate, 26 fixture end, 27 spring, 31 normal lighting unit, 32 emergency lighting unit, 34 unit case, 35 human presence sensor, 50 cover portion, 51 main surface portion, 52 upper surface portion, 53 lower surface portion, 54 side portion, 100 light distribution control device, 310 normal light source portion, 312 normal light source board, 313 normal light emitting element, 315 storage battery cover, 316 end cover, 317 normal control portion, 320 emergency light source portion, 321 emergency light source board, 321a insulating sheet, 322 Emergency light emitting element, 323 optical member, 323a inner surface, 323b outer surface, 325 emergency control section, 326 storage battery, 330 light source holder, 331 mounting surface section, 331a one surface side, 331b fixing hole, 333 holder, 333b fixing member, 334 upper holder side section, 334a fixing hole, 335 lower holder side section, 341 case rear section, 342 case upper section, 343 case lower section, 344 case end section, 345 mounting section, 345a through hole, 464 light-transmitting cover, 511 opening, 512 reflective surface section, 512a first inclined surface section, 512b second inclined surface section.

Claims

1. A long-length, regular lighting unit, An emergency lighting unit that lights up in an emergency, a fixture body having a back plate attached to a mounting portion, the fixture body having the normal lighting unit and the emergency lighting unit attached side by side; Equipped with The emergency lighting unit comprises: a mounting surface portion disposed parallel to the back plate of the device body; a light source attached to the placement surface; a light distribution control device that controls the optical axis of the light emitted from the light source to be in a predetermined direction with respect to a normal line of the back plate of the fixture body; A lighting device having:

2. The predetermined direction is at an angle greater than 0 degrees and less than 90 degrees with respect to the normal line of the back plate. The lighting device according to claim 1 .

3. The light distribution control device includes: an optical member provided to cover the light source, The optical member receives the light emitted from the light source, refracts the light, and outputs the light.

3. The lighting device according to claim 1 or 2.

4. The optical member is It is a concave meniscus lens whose thickness is small at the center and large at the periphery.

4. The lighting device according to claim 3.

5. The light distribution control device includes: a reflecting surface portion attached to a cover having an opening for exposing an optical member provided to cover the light source, the reflecting surface portion having an inclined surface that widens as it protrudes from an edge of the opening toward an opposite side to the light source, The reflecting surface portion has a first inclined surface portion extending at a first inclination angle with respect to the normal line of the back plate, and a second inclined surface portion extending at a second inclination angle with respect to the normal line of the back plate, The second tilt angle is greater than the first tilt angle. The lighting device according to claim 1 .

6. The reflecting surface portion is made of a flame-retardant material.

6. The lighting device according to claim 5.

7. The light distribution control device includes: an optical member provided to cover the light source; a reflecting surface portion disposed on the output side of the light source with respect to the optical member; Including, The optical member is controlling the light emitted from the light source so that the light emitted upward, which is opposite to the predetermined direction, is directed downward, which is the predetermined direction; The reflecting surface portion is The light transmitted through the optical member is reflected downward. The lighting device according to claim 1 .

8. The light distribution control device includes: an optical member provided to cover the light source; a reflecting surface portion disposed between the optical member and the light source; Including, The reflecting surface portion is Among the light emitted from the light source, light emitted upward, which is opposite to the predetermined direction, is reflected downward, which is the predetermined direction. The lighting device according to claim 1 .

9. The light distribution control device includes: A reflective surface portion extending from between the normal lighting unit and the emergency lighting unit toward the light output side of the light source is included. The lighting device according to claim 1 .

10. The instrument body includes: A side surface portion is provided perpendicular to the back plate and supports a longitudinal surface of the normal lighting unit, The emergency lighting unit comprises: a light source holder to which the mounting surface is attached, The light source holder is attached in a state where the mounting surface is perpendicular to the side surface of the fixture body and the side surface of the light source holder faces the side surface of the fixture body.

3. The lighting device according to claim 1 or 2.

11. The back panel is attached to a wall surface extending in a vertical direction, The predetermined direction is a downward direction with respect to the normal line.

3. The lighting device according to claim 1 or 2.

12. The back panel is attached to a staircase or a landing, and the staircase or the landing is illuminated.

3. The lighting device according to claim 1 or 2.

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