Disaster prevention lighting equipment

Abstract

To provide a disaster prevention lighting fixture in which light is smoothly exchanged between an optical element of a power supply unit and the outside of the disaster prevention lighting fixture. [Solution] Disaster prevention lighting device 1 includes a housing 14, a light source housed in housing 14, a power supply unit 4 housed in housing 14 and supplying power to the light source, and a light guiding section 51. Power supply unit 4 includes a plurality of optical elements 40. Housing 14 includes a monitor panel section 140 having a monitor section 3 corresponding to power supply unit 4. Monitor section 3 has a plurality of transmitting sections 32 that transmit light. The plurality of transmitting sections 32 correspond to the plurality of optical elements 40, respectively. Light guiding section 51 includes a plurality of light guiding rods 52 arranged to guide light between optical elements 40 and the transmitting sections 32 corresponding to optical elements 40, and bridging sections 53 spanning between the plurality of light guiding rods 52.

Description

[Technical Field]

[0001] The present disclosure relates to a disaster prevention lighting device, and more particularly to a disaster prevention lighting device including a light source and a power supply unit that supplies power to the light source. [Background technology]

[0002] Patent document 1 discloses that a power supply device that supplies power to the light source in a disaster prevention lighting fixture comprises a charging monitor unit, a light source monitor unit, and a remote control receiver unit, and that when the LED module that is the light source of the disaster prevention lighting fixture reaches the end of its life, the light source monitor unit flashes, and when the remote control receiver unit receives a remote control signal, it outputs a trigger signal to the control circuit to start a self-inspection, and during the self-inspection, if the storage battery of the disaster prevention lighting fixture is normal, the charging monitor unit lights up, and if the storage battery is abnormal (replacement is required), the charging monitor unit flashes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-026827 Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the present disclosure is to provide a disaster prevention lighting device in which light is smoothly exchanged between the multiple optical elements of the power supply unit and the outside, and in which components that mediate this light exchange can be easily incorporated into the disaster prevention lighting device. [Means for solving the problem]

[0005] A disaster prevention lighting device according to one aspect of the present disclosure includes a housing, a light source housed in the housing, a power supply unit housed in the housing and supplying power to the light source, and a light guide unit. The power supply unit includes a plurality of optical elements. The housing includes a monitor panel unit having a monitor unit corresponding to the power supply unit. The monitor unit has a plurality of transmission units that transmit light. The transmission units correspond to a plurality of the optical elements, respectively. The light guide unit includes a plurality of light guide rods arranged to guide light between the optical elements and the transmission units corresponding to the optical elements, and a bridge unit spanning between the light guide rods. [Effects of the Invention]

[0006] According to the present disclosure, the light guide rod allows smooth exchange of light between the multiple optical elements of the power supply unit and the outside, and has the advantage that the light guide rod can be easily incorporated into disaster prevention lighting equipment. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a disaster prevention lighting device according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is an exploded perspective view of the disaster prevention lighting fixture. [Figure 3] FIG. 3 is an exploded perspective view of the disaster prevention lighting fixture. [Figure 4] FIG. 4 is a cutaway front view of the disaster prevention lighting device, omitting the front wall and display body. [Figure 5] FIG. 5 is an enlarged view of the main part of FIG. [Figure 6] FIG. 6 is a cutaway perspective view of the disaster prevention lighting device, omitting the front wall, display body, connecting portion, and monitor panel portion. [Figure 7] FIG. 7 is an exploded perspective view of the power supply unit in the disaster prevention lighting fixture. [Figure 8] FIG. 8 is a cutaway perspective view of the disaster prevention lighting fixture, omitting the front wall, display body, and monitor panel. [Figure 9] FIG. 9 is an enlarged view of the main part of FIG. [Figure 10] FIG. 10 is a cutaway perspective view of the disaster prevention lighting device, omitting the front wall and the display body. [Figure 11] FIG. 11 is a circuit block diagram of the disaster prevention lighting fixture. [Figure 12] FIG. 12 is an explanatory diagram showing the path of light passing between the optical element and the outside in the disaster prevention lighting fixture of the same. [Figure 13] Figure 13 is a broken perspective view of the disaster prevention lighting device, omitting the front wall and display body, in the case where the connecting portion in the disaster prevention lighting device of the same type is provided with a light-guiding portion having a light-guiding rod and a bridging portion. [Figure 14] Figure 14 is a broken perspective view of the disaster prevention lighting device, omitting the front wall and display body, in the case where the connecting portion in the disaster prevention lighting device of the same type is provided with a light-guiding portion having a light-guiding rod and a bridging portion. [Figure 15] FIG. 15 is a plan view of a first example of a light guiding portion in the disaster prevention lighting device of the above, in which the connecting portion includes a light guiding portion having a light guiding rod and a bridging portion. [Figure 16] FIG. 16 is an explanatory diagram showing the positional relationship between the light guide unit, the optical element, and the monitor panel unit in FIG. [Figure 17] Figure 17 is an explanatory diagram showing a second example of a light-guiding section when the connecting section in the above-mentioned disaster prevention lighting device is equipped with a light-guiding section having a light-guiding rod and a bridging section, and the positional relationship between this light-guiding section and the optical element. [Figure 18] Figure 18 is an explanatory diagram showing a third example of a light-guiding section when the connecting section in the above-mentioned disaster prevention lighting device is equipped with a light-guiding section having a light-guiding rod and a bridging section, and the positional relationship between this light-guiding section and the optical element. DETAILED DESCRIPTION OF THE INVENTION

[0008] A disaster prevention lighting device 1 according to an embodiment of the present disclosure will be described in detail with reference to the drawings. However, each diagram described in the following embodiment is a schematic diagram, and the ratios of the sizes and thicknesses of the components do not necessarily reflect the actual dimensional ratios. Note that the configuration described in the following embodiment is merely an example of the present disclosure. The present disclosure is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0009] 1. Overview The disaster prevention lighting device 1 of the embodiment includes a housing 14, a light source housed in the housing 14, and a power supply unit 4 housed in the housing 14 and supplying power to the light source.

[0010] When the power supply unit 4 includes optical elements 40 such as light-emitting elements 401 that display various types of information and light-receiving elements 402 that receive various types of optical signals, etc., in order to ensure smooth exchange of light between the optical elements 40 and the outside of the disaster prevention lighting device 1, the power supply unit 4 needs to be placed inside the disaster prevention lighting device 1 so that the optical elements 40 are close to the outside of the disaster prevention lighting device 1. This places strict restrictions on the placement location of the power supply unit 4 inside the disaster prevention lighting device 1. The inventors also considered how, when the power supply unit 4 includes multiple optical elements 40, components for ensuring smooth exchange of light between the multiple optical elements 40 and the outside can be easily incorporated into the disaster prevention lighting device 1.

[0011] Therefore, the inventor has completed the present disclosure in order to ensure smooth exchange of light between the multiple optical elements 40 possessed by the power supply unit 4 and the outside, and to enable components that mediate this exchange of light to be easily incorporated into the disaster prevention lighting device 1.

[0012] A disaster prevention lighting device 1 according to an embodiment of the present disclosure includes a housing 14, a light source housed in the housing 14, a power supply unit 4 housed in the housing 14 and supplying power to the light source, and a light guiding unit 51. The power supply unit 4 includes a plurality of optical elements 40. The housing 14 includes a monitor panel unit 140 having a monitor unit 3 corresponding to the power supply unit 4. The monitor unit 3 includes a plurality of transmission units 32 that transmit light. The plurality of transmission units 32 correspond to the plurality of optical elements 40, respectively. The light guiding unit 51 includes a plurality of light guiding rods 52 arranged to guide light between the optical elements 40 and the transmission units 32 corresponding to the optical elements 40, and a bridge unit 53 spanning between the plurality of light guiding rods 52.

[0013] Therefore, the light guiding rod 52 allows smooth exchange of light between the plurality of optical elements 40 of the power supply unit 4 and the outside. Furthermore, the plurality of light guiding rods 52 and the bridging portion 53 form a single member called the light guiding portion 51, so the light guiding rod 52 can be easily incorporated into the disaster prevention lighting device 1.

[0014] 2.Details The disaster prevention lighting fixture 1 is an emergency light that is installed at an emergency exit or a passageway to an emergency exit in a building such as an office or a store. However, the disaster prevention lighting fixture 1 may be a lighting fixture other than an emergency light, such as an emergency light, as long as it is used for disaster prevention.

[0015] In the following description, unless otherwise specified, in the direction in which two display bodies 13 (described later) in the disaster prevention lighting device 1 are lined up, the side of one display body 13 relative to the other display body 13 is defined as the front, and the side opposite the front is defined as the rear. The up and down in this embodiment refers to the top and bottom of the disaster prevention lighting device 1 when the disaster prevention lighting device 1 of the embodiment is used by being installed in a building or the like. Furthermore, the left and right of the observer when the front and back and top and bottom of the observer are defined as above is defined as the left and right in this embodiment (see Figure 1). Note that these definitions of front and back, top and bottom, and left and right are for convenience, and the orientation of the disaster prevention lighting device 1 when used is not necessarily defined as above.

[0016] The disaster prevention lighting device 1 (see Figures 1 to 4) includes a housing 14, a mounting plate 149, a light source block 11, a plurality of (four in this embodiment) power supply units 4, and two display bodies 13.

[0017] The housing 14 is made of, for example, but not limited to, a synthetic resin material. The housing 14 has a front wall 141, a rear wall 142, and a peripheral wall 143. The front wall 141 and the rear wall 142 are each rectangular. The front wall 141 and the rear wall 142 each have a rectangular mounting opening 148. The peripheral wall 143 is shaped like a rectangular parallelepiped box with its front and rear faces open. The front face of the peripheral wall 143 is closed by the front wall 141, and the rear face of the peripheral wall 143 is closed by the rear wall 142. The peripheral wall 143 has an upper wall 144 located at the top, a left wall 146 located at the left, a right wall 145 located at the right, and a bottom wall 147 located at the bottom, which are combined together.

[0018] In this embodiment, the bottom wall 147 is the monitor panel 140. The monitor panel 140 has a plurality of monitors 3 (four) (a first monitor 301, a second monitor 302, a third monitor 303, and a fourth monitor 304), the same number as the power supply units 4. The first monitor 301, the second monitor 302, the third monitor 303, and the fourth monitor 304 are lined up in this order facing left in the left-right direction. Each monitor 3 has three transmissive portions 32 (a first transmissive portion 321, a second transmissive portion 322, and a third transmissive portion 323) and one operation hole 33. The first transmissive portion 321, the second transmissive portion 322, the operation hole 33, and the third transmissive portion 323 are lined up in this order facing left in the left-right direction. Each of the first transmissive portion 321, the second transmissive portion 322, and the third transmissive portion 323 is configured to transmit light. In the embodiment, each of the first transmitting portion 321, the second transmitting portion 322, and the third transmitting portion 323 is a hole penetrating the monitor panel portion 140, but may be a transparent optical member such as a lens. The operation hole 33 is a hole penetrating the monitor panel portion 140.

[0019] The mounting plate 149 is made of, for example, metal and is attached to the circumferential wall 143 in the housing 14 at a position closer to the rear.

[0020] In the embodiment, the disaster prevention lighting device 1 includes eight light source blocks 11 (see FIGS. 2 and 3, etc.). At a position closer to the front side within the housing 14, two light source blocks 11 are arranged vertically next to each other along the left wall portion 146, and two light source blocks 11 are arranged vertically next to each other along the right wall portion 145. Furthermore, at a position closer to the rear side within the housing 14, two light source blocks 11 are arranged vertically next to each other along the left wall portion 146, and two light source blocks 11 are arranged vertically next to each other along the right wall portion 145.

[0021] Each light source block 11 has a rectangular parallelepiped case 110 that is long in the vertical direction, and a light source housed in the case 110. The light source has, for example, an LED module 10 (see FIG. 11 ) and a light guide 111 that guides light emitted from the LED module 10 in the horizontal direction. The light guided by the light guide 111 (light emitted from the LED module 10) is emitted from the case 110 toward the inside of the housing 14.

[0022] In this embodiment, the disaster prevention lighting device 1 includes two display bodies 13. The display bodies 13 are made of a translucent synthetic resin material, such as acrylic resin or polycarbonate resin. The display bodies 13 are rectangular flat plates. Pictograms for evacuation guidance are printed on the display bodies 13 (see FIGS. 1 to 3 ). One of the two display bodies 13 is housed in the housing 14 so that the display body 13 is exposed to the outside through a mounting opening 148 in the front wall portion 141, and the other display body 13 is housed in the housing 14 so that the display body 13 is exposed to the outside through a mounting opening 148 in the rear wall portion 142. When light is emitted from the light source block 11, the light is irradiated onto the display bodies 13, causing the entire display body 13 to emit light. This increases the brightness of the front surface of the display body 13 and improves the visibility of the pictograms from the outside.

[0023] The power supply units 4 supply power to the light sources (LED modules 10) in the light source blocks 11 to make the light sources emit light. In the embodiment, four power supply units 4 each correspond to two light source blocks 11, and each power supply unit 4 supplies power to the light sources in the corresponding two light source blocks 11.

[0024] Each power supply unit 4 includes a power supply device 2, a terminal block 12, and a storage battery block 15.

[0025] The power supply device 2 includes a lighting circuit 21, a charging circuit 22, a control circuit 23, an operation unit 24, an optical element 40, and a case 20 (see FIGS. 7 and 11). The power supply device 2 is housed in the space in front of a mounting plate 149 inside the housing 14, and is attached to the mounting plate 149 by an appropriate method such as screwing.

[0026] A printed circuit board 26 is housed within the case 20 of the power supply device 2. The printed circuit board 26 has a thickness in the front-to-rear direction. The lighting circuit 21, the charging circuit 22, and the control circuit 23 are formed on the printed circuit board 26 (see FIG. 5). Inserted components (such as inductors and capacitors) among the multiple circuit components that make up the lighting circuit 21 and the charging circuit 22 are mounted on the front surface (component surface 260) of the printed circuit board 26. The control circuit 23 is surface-mounted on the rear surface (solder surface) of the printed circuit board 26.

[0027] The self-check switch 231 and three optical elements 40 are mounted (implemented) on the lower part of the component surface 260 of the printed circuit board 26 (see FIG. 7). The optical elements 40 may include at least one of a light-emitting element 401 and a light-receiving element 402. In the embodiment, the optical elements 40 include a charging light-emitting unit 232 which is the light-emitting element 401, a light-source light-emitting unit 233 which is the light-emitting element 401, and a remote control light-receiving unit 234 which is the light-receiving element 402. The charging light-emitting unit 232, the light-source light-emitting unit 233, the self-check switch 231, and the remote control light-receiving unit 234 are mounted on the lower part of the component surface 260 of the printed circuit board 26. The light-source light-emitting unit 233, the charging light-emitting unit 232, the self-check switch 231, and the remote control light-receiving unit 234 are aligned leftward in the above-mentioned order in the left-right direction.

[0028] The self-inspection switch 231 has a push button 2310. The push button 2310 faces downward and can be pressed parallel to the component surface 260 of the printed circuit board 26. The light source light-emitting unit 233 and the charging light-emitting unit 232 can each emit light downward. The remote control light-receiving unit 234 can receive light incident from below. The light source light-emitting unit 233 and the charging light-emitting unit 232, which are light-emitting elements 401, are each, for example, light-emitting diodes. The light source light-emitting unit 233 is, for example, a light-emitting diode that emits red light, and the charging light-emitting unit 232 is, for example, a light-emitting diode that emits green light. Note that the light-emitting element 401 does not have to be a light-emitting diode and may be, for example, a semiconductor laser. The remote control light-receiving unit 234, which is the light-receiving element 402, is, for example, an infrared remote control light-receiving module that houses a photodiode, an amplifier, a filter, and the like in a single package.

[0029] The case 20 of the power supply device 2 has a body 200 and a cover 201. The cover 201 is formed in a roughly rectangular plate shape. The body 200 is formed in a box shape with an opening on the rear face. The case 20 is assembled by joining the body 200 and the cover 201 together so that the opening on the rear face of the body 200 is closed by the cover 201 (see FIG. 7).

[0030] Three openings (a first opening 2031, a second opening 2032, and a third opening 2033) and an operation unit 24 are provided in the lower wall of the case 20 (a lower wall 203 that is the lower wall of the body 200). The first opening 2031, the second opening 2032, the operation unit 24, and the third opening 2033 are lined up in this order facing left in the left-right direction.

[0031] The first opening 2031 and the second opening 2032 are circular holes having the same inner diameter. The third opening 2033 is a circular hole having an inner diameter larger than the inner diameters of the first opening 2031 and the second opening 2032.

[0032] The first opening 2031 faces the charging light-emitting unit 232 in the vertical direction. Therefore, light emitted by the charging light-emitting unit 232 is radiated to the outside of the case 20 through the first opening 2031. The second opening 2032 faces the light-source light-emitting unit 233 in the vertical direction. Therefore, light emitted by the light-source light-emitting unit 233 is radiated to the outside of the case 20 through the second opening 2032.

[0033] The third opening 2033 faces the remote control light receiving portion 234 in the vertical direction. Therefore, a remote control signal (optical signal) transmitted from the remote controller passes through the third opening 2033 and is received by the remote control light receiving portion 234.

[0034] The operating unit 24 is configured to be pressed in a direction (vertical direction) parallel to the component surface 260 of the printed circuit board 26. Specifically, the operating unit 24 has a push button unit 240 that presses the push button 2310 of the self-inspection switch 231 when pressed, and a support unit 241 that supports the push button unit 240 so that it can swing relative to the bottom wall 203. The push button unit 240 is separated from the bottom wall 203 by a groove 242 that penetrates the bottom wall 203.

[0035] The push button portion 240 is located below the push button 2310 of the self-inspection switch 231. The push button portion 240 is generally cylindrical. The height (length in the vertical direction) of the push button portion 240 is greater than the thickness of the bottom wall 203. Therefore, the push button portion 240 protrudes from the bottom wall 203 to the outside of the case 20, at least when it is not being pressed.

[0036] The support portion 241 is strip-shaped and has a width narrower than the outer diameter of the push button portion 240. The support portion 241 is formed from the bottom wall 203 of the body 200 to the front wall 202, which is the wall at the front side of the body 200. The support portion 241 is separated from the body 200 by a groove 242, except for a first end 2411 connected to the push button portion 240 and a second end 2412 opposite the first end 2411. Therefore, the support portion 241 supports the push button portion 240 so that it can swing up and down, with the second end 2412 as a fulcrum. Therefore, when the push button portion 240 is pressed upward, the support portion 241 bends, causing the push button portion 240 to swing upward, and the push button portion 240 presses the push button 2310 of the self-check switch 231. As a result, the self-check switch 231 is turned on. When the pushing operation is released, the external force that had been bending the support portion 241 is removed, and the push button portion 240 returns to its original position.

[0037] The battery block 15 includes a roughly rectangular parallelepiped battery case 150 and a battery 152 (see FIG. 11) housed in the battery case 150 (see FIG. 4). The battery 152 is, for example, a dry-cell nickel-metal hydride battery. A plurality of batteries 152 are housed in the battery case 150. The batteries 152 are electrically connected via conductive plates or lead wires. The battery block 15 includes a battery connector 151. The battery connector 151 is electrically connected to a battery connector provided in the power supply device 2. In other words, the battery 152 of the battery block 15 is electrically connected to the power supply device 2 via the battery connector 151 and the battery connector. The battery block 15 is housed in a space in front of a mounting plate 149 inside the housing 14 and is attached to the mounting plate 149 by an appropriate method such as screwing.

[0038] Terminal block 12 has a plurality of screwless terminals (also called quick-connect terminals), and conductors of power lines are inserted into each of the screwless terminals. The power lines are electrical paths for supplying AC power from AC power supply 9 (see FIG. 11), which is a commercial power system. Each screwless terminal of terminal block 12 is electrically connected to power supply device 2. In other words, power supply device 2 is electrically connected to AC power supply 9 via terminal block 12 and the power lines. Terminal block 12 is housed in a space in front of mounting plate 149 within housing 14, and is attached to mounting plate 149 by an appropriate method such as screwing.

[0039] The four power supply units 4 (first power supply unit 41, second power supply unit 42, third power supply unit 43, and fourth power supply unit 44) are arranged in a position near the monitor panel unit 140 inside the housing 14 (see FIG. 4). The four power supply units 4 are arranged in two rows along the monitor panel unit 140. Of the multiple power supply units 4, the power supply units 4 arranged in a row closer to the monitor panel unit 140 are also referred to as the first row of power supply units 4. The first row of power supply units 4 includes two power supply units 4 (the first power supply unit 41 and the third power supply unit 43). Of the multiple power supply units 4, the power supply units 4 arranged in a row along the monitor panel unit 140 on the opposite side of the monitor panel unit 140 from the first row of power supply units 4 are also referred to as the second row of power supply units 4. The second row of power supply units 4 includes two power supply units 4 (the second power supply unit 42 and the fourth power supply unit 44). A plurality of power supply units 4 are arranged so that the power supply units 4 in the first row are not interposed between the optical elements 40 of the power supply units 4 in the second row and the transmission sections 32 of the monitor sections 3 corresponding to the power supply units 4 in the second row.

[0040] 6 to 10, the first power supply units 41 and the third power supply units 43 in the first row are spaced apart and aligned leftward along the monitor panel 140. The second power supply units 42 and the fourth power supply units 44 in the second row are spaced apart and aligned leftward along the monitor panel 140. The first power supply units 41, the second power supply units 42, the third power supply units 43, and the fourth power supply units 44 correspond to the first monitor units 301, the second monitor units 302, the third monitor units 303, and the fourth monitor units 304 in the monitor panel 140, respectively. The light source light-emitting unit 233, the charge light-emitting unit 232, the self-check switch 231, and the remote control light-receiving unit 234 in each power supply unit 4 face each other in the vertical direction, respectively, to the first transmission unit 321, the second transmission unit 322, the operation hole 33, and the third transmission unit 323 in the corresponding monitor unit 3. The positions of the power supply units 4 in the second row are shifted in the direction (left-right direction) along the monitor panel unit 140 relative to the positions of the power supply units 4 in the first row. With respect to the positions in the direction (left-right direction) along the monitor panel unit 140, the light source light-emitting unit 233, the charging light-emitting unit 232, the self-check switch 231, and the remote control light-receiving unit 234 of the second power supply unit 42 in the second row are located between the first power supply unit 41 and the third power supply unit 43 in the first row. Therefore, with respect to the second power supply unit 42 in the second row and the corresponding second monitor unit 302, the power supply unit 4 in the first row is not interposed between the light source light-emitting unit 233 and the first transmissive portion 321, between the charging light-emitting unit 232 and the second transmissive portion 322, between the self-check switch 231 and the operation hole 33, or between the remote control light-receiving unit 234 and the third transmissive portion 323. Furthermore, in terms of position in the direction along the monitor panel section 140 (left-right direction), the light source light-emitting section 233, the charging light-emitting section 232, the self-check switch 231, and the remote control light-receiving section 234 of the fourth power supply unit 44 in the second row are located to the right of the third power supply unit 43 in the first row. Therefore, with respect to the fourth power supply unit 44 in the second row and the corresponding fourth monitor section 304, the power supply unit 4 in the first row is not interposed between the light source light-emitting section 233 and the first transparent section 321, between the charging light-emitting section 232 and the second transparent section 322, between the self-check switch 231 and the operation hole 33, or between the remote control light-receiving section 234 and the third transparent section 323.

[0041] Furthermore, the first opening 2031, the second opening 2032, and the third opening 2033 of each power supply unit 4 in the first row are opposed in the up-down direction to the first transmission portion 321, the second transmission portion 322, and the third transmission portion 323 of the corresponding monitor unit 3. Furthermore, the push button portion 240 of the operation portion 24 of each power supply unit 4 in the first row passes through the operation hole 33 of the corresponding monitor unit 3 and protrudes below the operation hole 33.

[0042] Within the housing 14, a connecting portion 5 is disposed between each power supply unit 4 in the second row and the corresponding monitor unit 3 (see FIGS. 4, 5, 9, and 10). That is, a connecting portion 5 is disposed between the second power supply unit 42 and the second monitor unit 302, and a connecting portion 5 is disposed between the fourth power supply unit 44 and the fourth monitor unit 304, so that the disaster prevention lighting device 1 has two connecting portions 5. Each connecting portion 5 includes a light guiding rod 52, an operating rod 54, and a holder 55.

[0043] The light guiding rod 52 is a rod-shaped member formed to guide light between its two ends. The light guiding rod 52 is made of, for example, acrylic resin. The light guiding rod 52 is arranged to guide light between the optical element 40 of each power supply unit 4 in the second row and the corresponding transmission section 32 of the monitor section 3. The connecting section 5 includes three light guiding rods 52 (a first light guiding rod 521, a second light guiding rod 522, and a third light guiding rod 523).

[0044] The operating rod 54 is a rod-shaped member. The operating rod 54 has a pressing portion 541 at one end (upper end), an operating button 542 at the other end (lower end), and a retaining portion 543 at a midpoint away from both the upper and lower ends. The operating button 542 is located at the lower end of the operating rod 54 and is generally cylindrical. The end face of the pressing portion 541 is flat. The retaining portion 543 is a portion that protrudes like a flange from the outer periphery of the operating rod 54, and the outer periphery of the operating rod 54 is larger at the retaining portion 543.

[0045] The holder 55 holds the light guide rod 52 and the operation rod 54 inside the housing 14. The holder 55 has a fixing device 554, a tip holding portion 551, a middle holding portion 552, and a rear holding portion 553. The fixing device 554 is a flat plate having a thickness in the front-to-rear direction and is fixed to the mounting plate 149 by screws or the like. The tip holding portion 551 is a flat plate having a thickness in the up-down direction and extends forward from the lower end of the mounting plate 149. The middle holding portion 552 is a flat plate having a thickness in the up-down direction and extends forward from the middle of the mounting plate 149. The rear holding portion 553 is a flat plate having a thickness in the up-down direction and extends forward from the upper end of the mounting plate 149.

[0046] Each of the middle holding portion 552 and the rear holding portion 553 has three through-holes (first light guide through-hole 571, second light guide through-hole 572, and third light guide through-hole 573) through which the light guide rod 52 passes, and a through-hole (operation through-hole 574) through which the operating rod 54 passes. The first light guide through-hole 571, the second light guide through-hole 572, the operation through-hole 574, and the third light guide through-hole 573 are lined up in this order facing left in the left-right direction. The tip holding portion 551 has three openings (first light guide opening 561, second light guide opening 562, and third light guide opening 563) corresponding to the light guide rod 52, and an opening (operation opening 564) through which the operating rod 54 passes. The first light guide opening 561, the second light guide opening 562, the operation opening 564, and the third light guide opening 563 are lined up in this order facing left in the left-right direction. The diameter of each of first light guiding opening 561 , second light guiding opening 562 , and third light guiding opening 563 is smaller than the diameter of light guiding rod 52 .

[0047] First light guiding rod 521 is passed through first light guiding hole 571 of middle holding unit 552 and rear holding unit 553, and the lower end of first light guiding rod 521 abuts against the periphery of first light guiding opening 561 in tip holding unit 551. In this way, first light guiding rod 521 is held by holder 55. The lower end surface of first light guiding rod 521 is exposed at first light guiding opening 561 when viewed from below. Second light guiding rod 522 is passed through second light guiding hole 572 of middle holding unit 552 and rear holding unit 553, and the lower end of second light guiding rod 522 abuts against the periphery of second light guiding opening 562 in tip holding unit 551. In this way, second light guiding rod 522 is held by holder 55. The lower end surface of second light guiding rod 522 is exposed at first light guiding opening 561 when viewed from below. Third light guiding rod 523 is passed through third light guiding through hole 573 of middle holding part 552 and third light guiding through hole 573 of rear holding part 553, and the lower end of third light guiding rod 523 abuts against the periphery of third light guiding opening 563 in tip holding part 551. In this way, third light guiding rod 523 is held by holder 55. The lower end surface of third light guiding rod 523 is exposed at first light guiding opening 561 when viewed from below. Operating rod 54 is passed through operation opening 564 of tip holding part 551, operation through hole 574 of middle holding part 552, and operation through hole 574 of rear holding part 553. The retaining portion 543 of the operating rod 54 abuts against the periphery of the operating through-hole 574 on the upper surface of the middle holding portion 552, thereby preventing the operating rod 54 from coming off.

[0048] With respect to the power supply units 4 in the second row and the connecting portions 5 corresponding to the power supply units 4, one end (upper end) of the light guiding rod 52 faces the opening of the power supply unit 4, i.e., faces the optical element 40 of the power supply unit 4, and the other end (lower end) of the light guiding rod 52 faces the transmission portion 32 of the monitor unit 3. Furthermore, the pressing portion 541 at one end of the operating rod 54 faces the push button portion 240 of the operating portion 24 of the power supply unit 4, i.e., faces the push button 2310 of the self-check switch 231 of the power supply unit 4. The operating button 542 at the other end of the operating rod 54 passes through the operating hole 33 of the monitor panel portion 140 and protrudes to the outside of the housing 14.

[0049] Specifically, the upper end of the first light guiding rod 521 in the connecting portion 5 corresponding to the second power supply unit 42 faces the first opening of the second power supply unit 42 with a small gap therebetween, i.e., faces the light-source light-emitting portion 233 of the second power supply unit 42. The lower end of the first light guiding rod 521 faces the first transmission portion 321 of the second monitor unit 302 in the monitor panel 140 with a small gap therebetween. The upper end of the second light guiding rod 522 in the connecting portion 5 faces the second opening of the second power supply unit 42 with a small gap therebetween, i.e., faces the charging light-emitting portion 232 of the second power supply unit 42. The lower end of the second light guiding rod 522 faces the second transmission portion 322 of the second monitor unit 302 in the monitor panel 140 with a small gap therebetween. An upper end of the third light guiding rod 523 in the connecting portion 5 faces the third opening of the second power supply unit 42 with a small gap therebetween, i.e., faces the remote control light receiving portion 234 of the power supply unit 4. A lower end of the third light guiding rod 523 faces the third transmission portion 323 of the second monitor unit 302 in the monitor panel portion 140 with a small gap therebetween. Furthermore, a pressing portion 541 of the operating rod 54 of the connecting portion 5 faces the push button portion 240 of the operating portion 24 of the second power supply unit 42 with a small gap therebetween, i.e., faces the push button 2310 of the self-check switch 231 of the second power supply unit 42. An operating button 542 of the operating rod 54 passes through the operating hole 33 of the second monitor unit 302 and protrudes to the outside of the housing 14.

[0050] Furthermore, the upper end of the first light guiding rod 521 in the connecting portion 5 corresponding to the fourth power supply unit 44 faces the first opening of the fourth power supply unit 44 with a small gap therebetween, i.e., faces the light-source light-emitting portion 233 of the fourth power supply unit 44. The lower end of the first light guiding rod 521 faces the first transmission portion 321 of the fourth monitor unit 304 in the monitor panel unit 140 with a small gap therebetween. The upper end of the second light guiding rod 522 in the connecting portion 5 faces the second opening of the fourth power supply unit 44 with a small gap therebetween, i.e., faces the charging light-emitting portion 232 of the fourth power supply unit 44. The lower end of the second light guiding rod 522 faces the second transmission portion 322 of the fourth monitor unit 304 in the monitor panel unit 140 with a small gap therebetween. An upper end of the third light guiding rod 523 in the connecting portion 5 faces the third opening of the fourth power supply unit 44 with a small gap therebetween, i.e., faces the remote control light receiving portion 234 of the fourth power supply unit 44. A lower end of the third light guiding rod 523 faces the third transmission portion 323 of the fourth monitor unit 304 in the monitor panel portion 140 with a small gap therebetween. Furthermore, a pressing portion 541 of the operating rod 54 of the connecting portion 5 faces the push button portion 240 of the operating portion 24 of the fourth power supply unit 44 with a small gap therebetween, i.e., faces the push button 2310 of the self-check switch 231 of the fourth power supply unit 44. An operating button 542 of the operating rod 54 passes through the operating hole 33 of the fourth monitor unit 304 and protrudes to the outside of the housing 14.

[0051] On the other hand, for the power supply units 4 in the first row, the openings of the power supply units 4 face, with a small gap between them, the transparent portions 32 in the monitor section 3 corresponding to the power supply units 4. In addition, the push buttons 2310 of the self-inspection switches 231 of the power supply units 4 protrude to the outside of the housing 14 through the operation holes 33 in the monitor section 3 corresponding to the power supply units 4.

[0052] Specifically, the first opening of the first power supply unit 41 faces the first transmissive portion 321 of the first monitor unit 301 in the monitor panel unit 140 with a small gap therebetween, i.e., the first transmissive portion 321 faces the light source light-emitting portion 233 of the first power supply unit 41. The second opening of the first power supply unit 41 faces the second transmissive portion 322 of the first monitor unit 301 in the monitor panel unit 140 with a small gap therebetween, i.e., the first transmissive portion 321 faces the charging light-emitting portion 232 of the first power supply unit 41. The third opening of the first power supply unit 41 faces the third transmissive portion 323 of the first monitor unit 301 in the monitor panel unit 140 with a small gap therebetween, i.e., the third transmissive portion 323 faces the remote control light-receiving portion 234 of the first power supply unit 41. Furthermore, the push button 2310 of the self-inspection switch 231 of the first power supply unit 41 passes through the operation hole 33 in the first monitor section 301 and protrudes to the outside of the housing 14 .

[0053] Furthermore, the first opening of the third power supply unit 43 faces the first transmissive portion 321 of the third monitor unit 303 in the monitor panel unit 140 with a small gap therebetween, i.e., the first transmissive portion 321 faces the light source light-emitting portion 233 of the third power supply unit 43. The second opening of the third power supply unit 43 faces the second transmissive portion 322 of the third monitor unit 303 in the monitor panel unit 140 with a small gap therebetween, i.e., the second transmissive portion 322 faces the charging light-emitting portion 232 of the third power supply unit 43. The third opening of the third power supply unit 43 faces the third transmissive portion 323 of the third monitor unit 303 in the monitor panel unit 140 with a small gap therebetween, i.e., the third transmissive portion 323 faces the remote control light-receiving portion 234 of the third power supply unit 43. Furthermore, the push button 2310 of the self-inspection switch 231 of the third power supply unit 43 passes through the operation hole 33 in the third monitor section 303 and protrudes to the outside of the housing 14 .

[0054] An example of the circuit configuration of the disaster prevention lighting device 1, including the lighting circuit 21, the charging circuit 22, the control circuit 23, and the optical element 40 in the power supply unit 4, will be described in detail with reference to Fig. 11. Note that in the embodiment, the disaster prevention lighting device 1 has four power supply units 4, but for convenience, Fig. 11 shows the circuit configuration for one power supply unit 4.

[0055] The lighting circuit 21 in the power supply device 2 includes a power supply circuit 210 and a constant current circuit 211. The power supply circuit 210 includes, for example, a full-wave rectifier such as a diode bridge, a smoothing capacitor, and a DC / DC converter. The power supply circuit 210 converts an AC voltage with an effective value of 100 V supplied from the AC power supply 9 into a DC voltage of several volts (for example, 5 V). The constant current circuit 211 includes, for example, a metal-oxide-semiconductor field-effect transistor (MOSFET) and a drive circuit for driving the MOSFET. The MOSFET is electrically connected in series with the LED module 10, which serves as a light source, to the output terminal of the power supply circuit 210. The drive circuit adjusts the gate-source voltage of the MOSFET in response to instructions from the control circuit 23, as described below, to adjust the drain current of the MOSFET, i.e., the load current flowing through the LED module 10. However, the configurations of the power supply circuit 210 and the constant current circuit 211 are not limited to those described above.

[0056] The charging circuit 22 in the power supply device 2 receives a DC voltage from the power supply circuit 210 and supplies a charging current to the storage battery 152 to charge the storage battery 152.

[0057] The changeover switch 25 is inserted in an electrical path that electrically connects the positive electrode of the storage battery 152 and the high-potential input terminal of the constant current circuit 211. The changeover switch 25 is, for example, a normally-on electromagnetic relay or semiconductor relay. However, the changeover switch 25 may also be a normally-off electromagnetic relay or semiconductor relay. When the changeover switch 25 is on, a direct current is supplied from the storage battery 152 to the constant current circuit 211. When the changeover switch 25 is off, the storage battery 152 is electrically disconnected from the constant current circuit 211.

[0058] The control circuit 23 in the power supply device 2 includes, for example, a microcontroller (also called a microcomputer) that integrates a CPU (Central Process Unit), a timer, a memory, and the like into a single integrated circuit. The control circuit 23 determines whether the power supply from the AC power supply 9 has stopped (a power outage) by comparing the output voltage of the power supply circuit 210 or a voltage proportional to the output voltage with a threshold value. If the control circuit 23 determines that there is no power outage, it keeps the selector switch 25 in the OFF state and causes the charging circuit 22 to charge the storage battery 152. On the other hand, if the control circuit 23 determines that there is a power outage, it turns on the selector switch 25 and causes the storage battery 152 to discharge to the constant current circuit 211. The control circuit 23 also outputs a pulse signal to the drive circuit of the constant current circuit 211 regardless of the state of the selector switch 25 (whether there is a power outage or not). The control circuit 23 performs PWM (Pulse Width Modulation) control of the constant current circuit 211 by adjusting the duty ratio of the pulse signal. The drive circuit of the constant current circuit 211 integrates the pulse signal (PWM signal) provided by the control circuit 23 and converts it into a DC voltage proportional to the duty ratio of the PWM signal. Furthermore, the drive circuit adjusts the drain current (load current) by applying the converted DC voltage between the gate and source of the MOSFET. That is, the control circuit 23 instructs the constant current circuit 211 (its drive circuit) on the target value of the load current based on the duty ratio of the PWM signal, and controls the constant current circuit 211 so that the load current matches the target value. However, the control circuit 23 may set the target value of the load current when it determines that a power outage has occurred to be smaller than the target value of the load current when it determines that no power outage has occurred.

[0059] Furthermore, the control circuit 23 is electrically connected to a self-check switch 231, a charging light-emitting unit 232, a light source light-emitting unit 233, and a remote control light-receiving unit 234.

[0060] The charging light-emitting unit 232 emits light when a direct current is supplied from the control circuit 23. The control circuit 23 indicates the operating state of the charging circuit 22 by the light emission of the charging light-emitting unit 232. That is, for example, the control circuit 23 causes the charging light-emitting unit 232 to emit light when the charging circuit 22 is operating.

[0061] The light source light emitting unit 233 emits light using a direct current supplied from the control circuit 23. The control circuit 23 monitors the lighting time of the light source and indicates the result by the light emission of the light source light emitting unit 233. That is, for example, the control circuit 23 measures (counts) the cumulative lighting time of the LED module 10, and causes the light source light emitting unit 233 to blink when the cumulative lighting time reaches the lifespan of the LED module 10 (for example, 60,000 hours).

[0062] The remote control light receiving unit 234 receives a remote control signal (remote control signal) that uses infrared rays as a communication medium. The remote control signal is transmitted from a remote controller for inspection work. When the remote control light receiving unit 234 receives the remote control signal transmitted from the remote controller, it outputs a trigger signal to the control circuit 23 to start a self-inspection.

[0063] When the push button 2310 of the self-inspection switch 231 is pressed or the remote control light receiving unit 234 receives a trigger signal (light signal) to start a self-inspection, the control circuit 23 starts a self-inspection of the disaster prevention lighting device 1, and the result is indicated by the lighting of the light-emitting element 401. Specifically, the control circuit 23 starts a self-inspection when it receives a trigger signal to start a self-inspection from the self-inspection switch 231 by pressing the push button 2310 of the self-inspection switch 231. However, the control circuit 23 also starts a self-inspection when it receives a trigger signal to start a self-inspection from the remote control light receiving unit 234. After starting the self-inspection, the control circuit 23 stops the charging circuit 22 for a predetermined inspection time (e.g., 20 minutes or 60 minutes) and turns on the selector switch 25 to supply power from the storage battery 152 to the constant current circuit 211. Furthermore, the control circuit 23 controls the constant current circuit 211 to light up the LED module 10. The control circuit 23 measures the battery voltage of the storage battery 152 when the inspection time has elapsed, and if the measured value of the battery voltage is equal to or greater than the lower limit, determines that the storage battery 152 is normal and lights up the charging light-emitting unit 232. Furthermore, if the measured value of the battery voltage of the storage battery 152 when the inspection time has elapsed is less than the lower limit, the control circuit 23 determines that the storage battery 152 is abnormal (requires replacement) and causes the charging light-emitting unit 232 to blink.

[0064] When a self-inspection is performed on the power supply unit 4 in the first row (the first power supply unit 41 or the third power supply unit 43), the push button 240 of the operation unit 24, which protrudes from the operation hole 33 in the monitor unit 3 (the first monitor unit 301 or the third monitor unit 303) corresponding to the power supply unit 4 to be inspected, is pressed with a finger or the like. The push button 240 presses the push button 2310 of the self-inspection switch 231, causing the self-inspection switch 231 to output a trigger signal to start the self-inspection to the control circuit 23. Alternatively, a remote control signal (remote control signal) using infrared rays as a communication medium is transmitted from a remote controller for inspection. This remote control signal passes through the third transparent portion 323 in the monitor unit 3 (the first monitor unit 301 or the third monitor unit 303) corresponding to the power supply unit 4 to be inspected and the third opening 2033 in the power supply unit 4 to be inspected, and is received by the remote control light receiving unit 234. Upon receiving the remote control signal, the remote control light receiving unit 234 outputs a trigger signal to start the self-inspection to the control circuit 23. Upon receiving the trigger signal, the control circuit 23 of the power supply unit 4 to be inspected starts the self-inspection as described above.

[0065] In the power supply unit 4 in the first row (the first power supply unit 41 or the third power supply unit 43), when the control circuit 23 causes the light source light-emitting unit 233 to emit light, the light emitted by the light source light-emitting unit 233 passes through the first opening of the power supply unit 4 and the first transparent portion 321 of the monitor unit 3 corresponding to this power supply unit 4 and is emitted to the outside of the housing 14, thereby being visible from the outside.

[0066] Furthermore, in the power supply unit 4 in the first row (the first power supply unit 41 or the third power supply unit 43), when the control circuit 23 causes the charging light-emitting unit 232 to emit light, the light emitted by the charging light-emitting unit 232 passes through the second opening of the power supply unit 4 and the second transparent unit 322 of the monitor unit 3 (the first monitor unit 301 or the third monitor unit 303) corresponding to this power supply unit 4 and exits the housing 14, thereby being visible from the outside.

[0067] On the other hand, when a self-inspection is performed on the power supply unit 4 in the second row (the second power supply unit 42 or the fourth power supply unit 44), the operation button 542 of the operating rod 54 protruding from the operation hole 33 in the monitor unit 3 (the second monitor unit 302 or the fourth monitor unit 304) corresponding to the power supply unit 4 is pressed with a finger or the like. This causes the operating rod 54 to move upward, and the pressing portion 541 of the operating rod 54 presses the push button portion 240 of the operation unit 24. This causes the push button portion 240 to press the push button 2310 of the self-inspection switch 231, which outputs a trigger signal to start the self-inspection from the self-inspection switch 231 to the control circuit 23. Alternatively, a remote control signal (remote control signal) using infrared rays as a communication medium is transmitted from a remote controller for inspection work. The remote control signal passes through third transmitting portion 323 in monitor portion 3 (second monitor portion 302 or fourth monitor portion 304) corresponding to power supply unit 4, and enters third light guiding rod 523 from the lower end of third light guiding rod 523 in connecting portion 5 corresponding to power supply unit 4. The remote control signal travels from the lower end to the upper end of third light guiding rod 523, exits from the upper end of third light guiding rod 523, passes through third opening 2033 in power supply unit 4, and is received by remote control light receiver 234. Upon receiving the remote control signal, remote control light receiver 234 outputs a trigger signal to start a self-inspection to control circuit 23. Upon receiving the trigger signal, control circuit 23 of power supply unit 4 to be inspected starts a self-inspection as described above.

[0068] Furthermore, when control circuit 23 causes light-source light-emitting unit 233 to emit light in power supply unit 4 in the second row (second power supply unit 42 or fourth power supply unit 44), the light emitted by light-source light-emitting unit 233 passes through the first opening of power supply unit 4 and enters first light guiding rod 521 from the upper end of first light guiding rod 521 of connecting unit 5 corresponding to power supply unit 4. This light travels through first light guiding rod 521 from the upper end to the lower end, exits from the lower end of first light guiding rod 521, and passes through first transmissive portion 321 of monitor unit 3 (second monitor unit 302 or fourth monitor unit 304) corresponding to power supply unit 4 to the outside of housing 14, whereby it is visible from the outside.

[0069] Furthermore, when control circuit 23 causes charging light-emitting portion 232 to emit light in power supply unit 4 in the second row (second power supply unit 42 or fourth power supply unit 44), the light emitted by charging light-emitting portion 232 passes through the second opening of power supply unit 4 and enters second light guiding rod 522 from the upper end of second light guiding rod 522 of connecting portion 5 corresponding to power supply unit 4. This light travels through second light guiding rod 522 from the upper end to the lower end, exits from the lower end of second light guiding rod 522, and exits housing 14 through second transmissive portion 322 of monitor unit 3 (second monitor unit 302 or fourth monitor unit 304) corresponding to power supply unit 4, thereby being visible from the outside.

[0070] FIG. 12 is a schematic diagram showing an example of a light path in an optical system including optical element 40 (light-emitting element 401 or light-receiving element 402), light guiding rod 52, and transmitting portion 32. In FIG. 12, the light paths are indicated by solid and dashed lines. Among these, the solid lines indicate light paths that are common whether or not light guiding rod 52 is present. The dashed lines indicate light paths that are only present when light guiding rod 52 is present. When optical element 40 is light-emitting element 401 (charging light-emitting portion 232 or light-source light-emitting portion 233), when light-emitting element 401 emits light, light can be emitted from light-emitting element 401 to the outside of housing 14 via the paths indicated by the solid and dashed lines, through light guiding rod 52 and transmitting portion 32. Because the light travels through light guiding rod 52, the light is emitted to the outside not only via the path indicated by the solid line but also via the path indicated by the dashed line. This improves the visibility of light from light-emitting element 401 from the outside. In the case where optical element 40 is light receiving element 402 (remote control light receiving unit 234), when light such as a remote control signal transmitted by a remote controller is irradiated from outside housing 14 toward transparent portion 32, the light can reach light receiving element 402 from outside housing 14 through transparent portion 32 and light guiding rod 52 along the paths indicated by the solid and dashed lines. Because the light travels within light guiding rod 52, the light reaches light receiving element 402 not only along the path indicated by the solid line but also along the path indicated by the dashed line. This makes it easier for light to reach light receiving element 402.

[0071] The plurality of light guiding rods 52 in each connecting portion 5 may constitute a single member, the light guiding portion 51. The light guiding portion 51 has the plurality of light guiding rods 52 and a bridging portion 53. The bridging portion 53 is bridged between adjacent light guiding rods 52 among the plurality of light guiding rods 52, thereby connecting these light guiding rods 52 to each other. In this case, the plurality of light guiding rods 52 constitute a single member, the light guiding portion 51, which makes it easier to incorporate the light guiding rods 52 into the disaster prevention lighting device 1.

[0072] 13 and 14 show examples of connecting unit 5 including light guiding unit 51. As also schematically shown in FIG. 15 , light guiding unit 51 includes three light guiding rods 52 (a first light guiding rod 521, a second light guiding rod 522, and a third light guiding rod 523) and a bridging portion 53 connecting adjacent light guiding rods 52 (the first light guiding rod 521 and the second light guiding rod 522, and the second light guiding rod 522 and the third light guiding rod 523) among the three light guiding rods 52. Bridging portion 53 includes a main portion 531 and a connecting portion 532. Main portion 531 is rod-shaped and long in the direction in which light guiding rods 52 are arranged. Main portion 531 is located opposite light guiding rods 52 in a direction perpendicular to both the length direction of light guiding rods 52 and the direction in which light guiding rods 52 are arranged. Bridging portion 53 has a plurality of connecting portions 532 corresponding to the plurality of light guiding rods 52, respectively. Each connecting portion 532 extends from main portion 531 toward light guiding rod 52 along a direction intersecting the longitudinal direction of main portion 531, and is connected to a side surface of light guiding rod 52. That is, the connecting portion 532 connected to the first light guiding rod 521 extends from one end (right end) of the main portion 531 to the first light guiding rod 521 in a direction intersecting the longitudinal direction of the main portion 531 and is connected to a side surface of the first light guiding rod 521, the connecting portion 532 connected to the second light guiding rod 522 extends from the side surface of the main portion 531 to the second light guiding rod 522 in a direction intersecting the longitudinal direction of the main portion 531 and is connected to a side surface of the second light guiding rod 522, and the connecting portion 532 connected to the third light guiding rod 523 extends from the other end (left end) of the main portion 531 to the third light guiding rod 523 in a direction intersecting the longitudinal direction of the main portion 531 and is connected to a side surface of the third light guiding rod 523. The connecting portions 532 of the bridge portion 53 are all connected to the light guiding rod 52 at positions away from either of the two longitudinal ends of the light guiding rod 52.

[0073] When the light guiding section 51 is incorporated into the connecting section 5 of the disaster prevention lighting device 1, as shown in FIG. 13 , the main section 531 of the bridging section 53 is disposed on the opposite side of the light guiding rod 52 from the mounting plate 149. Note that, as shown in FIG. 14 , the main section 531 of the bridging section 53 may be disposed on the mounting plate 149 side of the light guiding rod 52. In this case, the main section 531 of the bridging section 53 may be positioned and supported by the mounting plate 149. Furthermore, when the light guiding section 51 is incorporated into the connecting section 5 of the disaster prevention lighting device 1, the main section 531 of the bridging section 53 is positioned to face the light guiding rod 52 in a direction perpendicular to both the length direction of the light guiding rod 52 and the direction in which the light guiding rods 52 are arranged. Therefore, the bridging section 53 does not interfere with the operating rod 54.

[0074] Furthermore, as described above, each connecting portion 532 extends from main portion 531 toward light guiding rod 52 along a direction intersecting the longitudinal direction of main portion 531 and is connected to the side surface of light guiding rod 52. Therefore, even if part of the light traveling inside light guiding rod 52 enters connecting portion 532, the light is unlikely to pass between connecting portion 532 and main portion 531. Therefore, light traveling inside light guiding rod 52 can be prevented from entering another light guiding rod 52.

[0075] Furthermore, if connecting portion 532 of bridge portion 53 is connected to the end of light guiding rod 52 opposite to the direction in which light travels, the frequency with which light enters bridge portion 53 from light guiding rod 52 increases. However, as described above, if connecting portion 532 of bridge portion 53 is connected to light guiding rod 52 at a position away from either of the two longitudinal ends of light guiding rod 52, the frequency with which light enters bridge portion 53 from light guiding rod 52 can be reduced regardless of the direction in which light travels within light guiding rod 52. This can also prevent light traveling within light guiding rod 52 from entering another light guiding rod 52. It is more preferable if connecting portion 532 of bridge portion 53 is connected to light guiding rod 52 at the center of light guiding rod 52 in the longitudinal direction.

[0076] The structure of bridge portion 53 is not limited to the above, as long as it is bridged across a plurality of light guiding rods 52 to connect light guiding rods 52 to each other.

[0077] 17 , bridge portion 53 may include a bridge portion 534 connecting first light guiding rod 521 and second light guiding rod 522 and a bridge portion 534 connecting second light guiding rod 522 and third light guiding rod 523, and the two bridge portions 534 may be separate. When two light guiding rods 52 having the same light traveling direction, such as first light guiding rod 521 and second light guiding rod 522, are connected, bridge portion 534 preferably spans between positions of the two light guiding rods 52 that are apart from both of the two longitudinal ends of light guiding rod 52 (between a position of the second light guiding rod 522 that is apart from both of the longitudinal ends of third light guiding rod 523). In this case, movement of light between two light guiding rods 52 can be further suppressed.

[0078] 18 , for example, bridge portion 53 may have small diameter portion 533, and the diameter of small diameter portion 533 may be smaller than the diameter of the portion other than small diameter portion 533. Small diameter portion 533 may be formed, for example, in the vicinity of a portion of bridge portion 53 connected to light guiding rod 52. In this case, even if light enters bridge portion 53 from light guiding rod 52, the light is less likely to travel through small diameter portion 533, and therefore, the entry of light from light guiding rod 52 into another light guiding rod 52 can be further suppressed.

[0079] Furthermore, all of the plurality of light guiding rods 52 may be connected to the bridging portion 53, or the bridging portion 53 may be connected to some of the plurality of light guiding rods 52. For example, among the first light guiding rod 521, the second light guiding rod 522, and the third light guiding rod 523, the bridging portion 53 may be connected only to the first light guiding rod 521 and the second light guiding rod 522, thereby bridging the first light guiding rod 521 and the second light guiding rod 522. The bridging portion 53 may be connected only to the second light guiding rod 522 and the third light guiding rod 523, thereby bridging the second light guiding rod 522 and the third light guiding rod 523. The bridging portion 53 may be connected only to the first light guiding rod 521 and the third light guiding rod 523, thereby bridging the first light guiding rod 521 and the third light guiding rod 523.

[0080] 3. Variations Although the disaster prevention lighting device 1 of the embodiment includes multiple power supply units 4, the disaster prevention lighting device 1 may also include only one power supply unit 4. In this case, even if the optical element 40 of this power supply unit 4 is not located close to the outside of the disaster prevention lighting device 1, light can be smoothly exchanged between the optical element 40 and the outside of the disaster prevention lighting device 1. Therefore, restrictions on the location of the power supply unit 4 within the disaster prevention lighting device 1 can be relaxed.

[0081] However, the advantages of the present disclosure can be particularly effectively exhibited when, as in the embodiment, the disaster prevention lighting device 1 is equipped with multiple power supply units 4. When the disaster prevention lighting device 1 has multiple power supply units 4, it is difficult to arrange the optical elements 40 of all of the power supply units 4 in positions close to the outside of the disaster prevention lighting device 1. However, according to the present disclosure, even if the optical elements 40 of the power supply units 4 are not in positions close to the outside of the disaster prevention lighting device 1, light can be smoothly exchanged between the optical elements 40 and the outside of the disaster prevention lighting device 1.

[0082] In particular, in this embodiment, the multiple power supply units 4 include a first row of multiple power supply units 4 aligned in a row along the monitor panel section 140, and a second row of multiple power supply units 4 aligned in a row along the monitor panel section 140 on the opposite side of the monitor panel section 140 from the first row of power supply units 4. The multiple power supply units 4 are arranged so that the first row of power supply units 4 are not positioned in the space between the optical elements 40 of the second row of power supply units 4 and the transmission sections 32 of the monitor section 3 corresponding to the second row of power supply units 4. Therefore, even if the optical elements 40 of the second row of power supply units 4 are not located in close proximity to the outside of the disaster prevention lighting device 1, a light guiding rod 52 can be positioned between the optical elements 40 and the transmission sections 32, and this light guiding rod 52 can be used to smoothly exchange light between the optical elements 40 of the second row of power supply units 4 and the outside of the disaster prevention lighting device 1. Furthermore, by including a first row of power supply units 4 and a second row of power supply units 4 in the housing 14 of the disaster prevention lighting device 1, the multiple power supply units 4 can be arranged neatly within the disaster prevention lighting device 1. Therefore, even if the disaster prevention lighting device 1 is equipped with multiple power supply units 4, excessive increase in size of the disaster prevention lighting device 1 can be prevented. Furthermore, light can be exchanged between the optical elements 40 of each of the multiple power supply units 4 and the outside of the disaster prevention lighting device 1 in all cases via the monitor panel section 140 of the housing 14, thereby improving convenience.

[0083] Although the disaster prevention lighting device 1 of the embodiment has two display bodies 13, the disaster prevention lighting device 1 may have only one display body 13.

[0084] Although the disaster prevention lighting device 1 of the embodiment includes four power supply units 4, the number of power supply units 4 is not limited to this. Also, although the disaster prevention lighting device 1 of the embodiment includes two rows of power supply units 4, the power supply units 4 may be arranged in three or more rows.

[0085] In the embodiment, each power supply unit 4 has two light-emitting elements 401 and one light-receiving element 402, but if each power supply unit 4 has multiple optical elements 40, it may have only a light-emitting element 401 or only a light-receiving element 402 as the optical element 40.

[0086] In the embodiment, the light emitting element 401 includes a charging light emitting unit 232 that displays the operating state of the charging circuit 22 by emitting light, and a light source light emitting unit 233 that displays the results of monitoring the lighting time of the light source by emitting light and the results of self-inspection by emitting light, but the functions of the light emitting element 401 are not limited to those described above. For example, the light emitting element 401 may display various operating states of the power supply unit 4 other than the operating state of the charging circuit 22. The light emitting element 401 may also display the results of various inspections related to the power supply unit 4.

[0087] In the embodiment, the light receiving element 402 is the remote control light receiving unit 234 that receives a remote control signal (remote control signal) and outputs a trigger signal to the control circuit 23 to start a self-inspection operation, but the function of the light receiving element 402 is not limited to this. The light receiving element 402 receives an optical signal for operating the power supply unit 4, for example.

[0088] In the embodiment, the monitor panel unit 140 is located at the bottom of the disaster prevention lighting device 1 when the disaster prevention lighting device 1 is installed and used in a building or the like. This allows an operator to easily observe the light emitted by the light-emitting element 401 from below the disaster prevention lighting device 1 and transmit an optical signal to the light-receiving element 402. However, the position of the monitor panel unit 140 is not limited to the bottom, and may be located at any appropriate position, such as the right side, left side, or lower part of the front or rear.

[0089] [Aspect] As shown in the above embodiments, the present disclosure includes the following aspects.

[0090] The disaster prevention lighting device (1) of the first embodiment includes a housing (14), a light source housed in the housing (14), a power supply unit (4) housed in the housing (14) and supplying power to the light source, and a light guide section (51). The power supply unit (4) includes a plurality of optical elements (40). The housing (14) includes a monitor panel section (140) having a monitor section (3) corresponding to the power supply unit (4). The monitor section (3) includes a plurality of light transmitting sections (32) that transmit light. The plurality of light transmitting sections (32) correspond to the plurality of optical elements (40). The light guide section (51) includes a plurality of light guide rods (52) arranged to guide light between the optical elements (40) and the light transmitting sections (32) corresponding to the optical elements (40), and a bridge section (53) spanning the plurality of light guide rods (52).

[0091] According to this embodiment, the light guide rods 52 allow smooth exchange of light between the plurality of optical elements 40 of the power supply unit 4 and the outside. Furthermore, since the plurality of light guide rods 52 and the bridging portion 53 form a single member called the light guide portion 51, the light guide rods 52 can be easily incorporated into the disaster prevention lighting device 1.

[0092] In the second aspect, in the first aspect, the bridging portion (53) is located opposite the light guiding rod (52) in a direction perpendicular to both the longitudinal direction of the light guiding rod (52) and the direction in which the light guiding rods (52) are arranged, and has a main portion (531) that is long in the direction in which the light guiding rods (52) are arranged, and a connecting portion (532) that extends from the main portion (531) toward the light guiding rod (52) along a direction intersecting the longitudinal direction of the main portion (531) and is connected to the side of the light guiding rod (52).

[0093] In this embodiment, even if a portion of the light traveling within the light-guiding rod (52) enters the connecting portion (532), the light is less likely to pass between the connecting portion (532) and the main portion (531), and therefore, the light traveling within the light-guiding rod (52) can be prevented from entering another light-guiding rod (52).

[0094] In the third aspect, in the first or second aspect, the monitor panel unit (140) is located at the bottom of the disaster prevention lighting device (1) when the disaster prevention lighting device (1) is in use.

[0095] In a fourth aspect, in any one of the first to third aspects, the optical element (40) includes at least one of a light emitting element (401) and a light receiving element (402).

[0096] In a fifth aspect, in any one of the first to fourth aspects, the optical element (40) includes at least one of a light-emitting element (401) that emits light to indicate the operating state of the power supply unit (4) and a light-emitting element (401) that emits light to indicate the results of a self-inspection of the power supply unit (4).

[0097] In a sixth aspect, in any one of the first to fifth aspects, the optical element (40) includes a light receiving element (402) that receives an optical signal for operating the power supply unit (4).

[0098] In a seventh aspect, the disaster prevention lighting device (1) according to any one of the first to sixth aspects includes a plurality of power supply units (4). The monitor panel section (140) has a plurality of monitor sections (3) corresponding to the plurality of power supply units (4). The plurality of power supply units (4) includes a plurality of first-row power supply units (4) aligned in a line along the monitor panel section (140) and a plurality of second-row power supply units (4) aligned in a line along the monitor panel section (140) on the opposite side of the monitor panel section (140) from the first-row power supply units (4). The plurality of power supply units (4) are arranged such that the first-row power supply units (4) are not interposed between the optical elements (40) of the second-row power supply units (4) and the transmission sections (32) of the monitor sections (3) corresponding to the second-row power supply units (4). The light guide section (51) is arranged to guide light between the optical element (40) in the second row of power supply units (4) and the transmission section (32) of the monitor section (3) corresponding to the second row of power supply units (4). [Explanation of symbols]

[0099] 1. Disaster prevention lighting equipment 10 LED modules (light source) 14. Case 140 Monitor panel section 3 Monitor section 32 Transparent part 4 Power Supply Unit 40 Optical Elements 401 Light-emitting element 402 Photodetector 51 Light guide section 52 Light Guide Rod 53 Crosslinked part 531 Main Section 532 Connection

Claims

1. a housing; a light source housed in the housing; a power supply unit housed in the housing and supplying power to the light source; and a light guide unit; the power supply unit includes a plurality of optical elements; the housing includes a monitor panel unit having a monitor unit corresponding to the power supply unit, the monitor unit having a plurality of transmission units that transmit light, the transmission units corresponding to the plurality of optical elements, respectively; The light guiding section includes a plurality of light guiding rods arranged to guide light between the optical elements and the transmission sections corresponding to the optical elements, and a bridge section spanning between the plurality of light guiding rods. Disaster prevention lighting equipment.

2. The crosslinking portion is a main portion that is positioned opposite to the light guiding rod in a direction perpendicular to both the length direction of the light guiding rod and the direction in which the light guiding rods are arranged, and that is elongated in the direction in which the light guiding rods are arranged; a connecting portion extending from the main portion toward the light guiding rod in a direction intersecting the longitudinal direction of the main portion and connected to a side surface of the light guiding rod, The disaster prevention lighting device according to claim 1.

3. The monitor panel unit is located at the bottom of the disaster prevention lighting device when the disaster prevention lighting device is in use. The disaster prevention lighting device according to claim 1.

4. The optical element includes at least one of a light emitting element and a light receiving element. The disaster prevention lighting device according to claim 1.

5. the optical element includes at least one of a light-emitting element that emits light to indicate the operating state of the power supply unit, and a light-emitting element that emits light to indicate the result of a self-inspection of the power supply unit; The disaster prevention lighting device according to claim 1.

6. the optical element includes a light receiving element that receives an optical signal for operating the power supply unit; The disaster prevention lighting device according to claim 1.

7. The disaster prevention lighting device includes a plurality of the power supply units, the monitor panel unit has a plurality of monitor units corresponding to the plurality of power supply units, the plurality of power supply units include a first row of power supply units aligned in a line along the monitor panel section, and a second row of power supply units aligned in a line along the monitor panel section at a position opposite the monitor panel section from the first row of power supply units, a plurality of the power supply units are arranged such that the power supply units in the first row are not interposed between the optical elements of the power supply units in the second row and the transmission portions of the monitor portion corresponding to the power supply units in the second row; the light guiding section is arranged to guide light between the optical elements in the power supply units in a second row and the transmission section of the monitor section corresponding to the power supply units in the second row. The disaster prevention lighting device according to claim 1.

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