JP2019153395A - Emergency lighting fixture and light source unit - Google Patents

Abstract

To provide an emergency lighting fixture easy to be downsized.SOLUTION: An emergency lighting fixture includes a second light source unit 2. The second light source unit 2 includes an LED 20, and a light guide 21 formed into a longitudinal columnar shape. The light guide 21 includes an incident surface 210 into which light irradiated from the LED 20 is incident. The light guide 21 guides the light incident from the incident surface 210 to a direction apart from the incident surface 210. The light guide 21 is structured so as to emit part of the light guided to the direction apart from the incident surface 210 to the outside of the light guide 21 from the side surface along the longitudinal direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an emergency lighting apparatus and a light source unit, and more particularly to an emergency lighting apparatus installed on a wall or ceiling of a landing, and a light source unit provided in the emergency lighting apparatus.

  An emergency lighting fixture described in Patent Document 1 is illustrated as a conventional example. The emergency lighting fixture described in Patent Document 1 (hereinafter referred to as a conventional example) includes a regular light source unit, two emergency light source units, a fixture body, an emergency power supply unit, and a battery unit. The instrument body has a back plate formed in a long rectangular flat plate shape, and a long rectangular flat plate shape, and has an upper plate and a lower plate shorter than the back plate. The two emergency light source units include an LED (Light Emitting Diode), a lens that controls light distribution of light emitted from the LED, and a holder that holds the LED. One emergency light source unit is attached to each end of the instrument body in the longitudinal direction.

JP 2017-50257 A

  By the way, there is a demand for downsizing the emergency lighting apparatus as in the above-described conventional example. However, it is difficult to reduce the size in the configuration of the conventional example in which one emergency light source unit is disposed at each of the longitudinal ends of the instrument body.

  The objective of this invention is providing the emergency lighting fixture and light source unit which can attain size reduction easily.

  An emergency lighting apparatus according to one embodiment of the present invention illuminates an escape passage including a staircase and a landing. The emergency lighting apparatus includes a first light source unit that is turned on by being supplied with power from an ordinary power source, and one or more second light source units that are turned on by being supplied with power from an emergency power source. The emergency lighting fixture includes a fixture body that supports the first light source unit and the second light source unit and is attached to the wall or ceiling of the landing. The second light source unit includes a solid light emitting element and a light guide formed in a long column shape. The light guide has an incident surface on which light emitted from the solid light emitting element is incident on an end face in the longitudinal direction of the light guide. The light guide is configured to guide light incident from the incident surface in a direction away from the incident surface along a longitudinal direction of the light guide and to guide light in a direction away from the incident surface. The part is configured to be emitted from the side surface along the longitudinal direction of the light guide to the outside of the light guide.

  The light source unit which concerns on 1 aspect of this invention is a light source unit with which an emergency lighting fixture is provided. The light source unit includes a solid light emitting element and a light guide formed in a long column shape. The light guide has an incident surface on which light emitted from the solid light emitting element is incident on an end face in the longitudinal direction of the light guide. The light guide is configured to guide light incident from the incident surface in a direction away from the incident surface along a longitudinal direction of the light guide and to guide light in a direction away from the incident surface. The part is configured to be emitted from the side surface along the longitudinal direction of the light guide to the outside of the light guide.

  The emergency lighting apparatus and the light source unit of the present invention have an effect that the size can be easily reduced.

1A is a front view of the emergency lighting apparatus of Embodiment 1. FIG. FIG. 1B is a bottom view of the above emergency lighting apparatus. FIG. 2A is a schematic view seen from the horizontal direction, and FIG. 2B is a schematic view seen from above, showing a staircase and a landing where the emergency lighting apparatus is installed. FIG. 3 is an exploded perspective view of the emergency lighting apparatus according to the embodiment. FIG. 4 is a side sectional view of the emergency lighting apparatus of the above. FIG. 5 is a cross-sectional view of the second light source unit in the emergency lighting apparatus same as above. FIG. 6A is a cross-sectional view of a second light source unit in Modification 1 of the emergency lighting apparatus of the above. FIG. 6B is a cross-sectional view of the second light source unit in Modification 2 of the emergency lighting fixture of the above. FIG. 6C is a cross-sectional view of the second light source unit in Modification 3 of the emergency lighting apparatus of the above. FIG. 6D is a cross-sectional view of the second light source unit in Modification 4 of the emergency lighting apparatus of the above. FIG. 6E is a cross-sectional view of the second light source unit in Modification 5 of the emergency lighting fixture of the above. FIG. 6F is a cross-sectional view of the second light source unit in Modification 6 of the emergency lighting fixture of the above. FIG. 7 is a front view of the emergency lighting apparatus of the second embodiment. FIG. 8 is a side sectional view of the emergency lighting apparatus of the above. FIG. 9A is a perspective view in which a part of the second light source unit in Modification 7 of the emergency lighting apparatus is omitted. FIG. 9B is a diagram showing a light distribution characteristic of the second light source unit of the above. FIG. 10A is a perspective view in which a part of the second light source unit in Modification 8 of the emergency lighting apparatus is partially omitted. FIG. 10B is a diagram showing a light distribution characteristic of the second light source unit same as above. FIG. 11A is a perspective view in which a part of the second light source unit in Modification 9 of the emergency lighting apparatus is partially omitted. FIG. 11B is a diagram showing a light distribution characteristic of the second light source unit. FIG. 12: is the perspective view which abbreviate | omitted a part of 2nd light source unit in the modification 10 of the emergency lighting fixture same as the above. FIG. 13A is a perspective view of a main part of the emergency lighting fixture of Embodiment 3. FIG. FIG. 13B is a perspective view in which a part of the second light source unit in the emergency lighting apparatus is omitted. FIG. 14: is the perspective view which abbreviate | omitted a part of 2nd light source unit in the modification 11 of the emergency lighting fixture same as the above. FIG. 15A is a plan view of Modification 12 of the emergency lighting apparatus of the above. FIG. 15B is a plan view of Modification 13 of the emergency lighting apparatus of the above. FIG. 15C is a plan view of a modified example 14 of the emergency lighting apparatus of the above. FIG. 16A is a perspective view of the emergency lighting apparatus of Embodiment 4. FIG. FIG. 16B is a perspective view in which a part of the second light source unit in the emergency lighting apparatus is omitted. FIG. 17: is sectional drawing of the 2nd light source unit in the modification 15 of the emergency lighting fixture same as the above.

  Embodiments of an emergency lighting apparatus according to one embodiment of the present invention will be described in detail with reference to the drawings. However, each drawing described in the following embodiment is a schematic diagram, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. The configurations described in the following embodiments are merely examples of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to design and the like as long as the effects of the present invention can be achieved.

[Embodiment 1]
The emergency lighting fixture X1 of Embodiment 1 is a so-called stairway guide light installed on the wall W1 of the landing site F1 of the staircases S1 and S2 serving as an evacuation route for a building (see FIGS. 2A and 2B). However, in the following description, unless otherwise specified, the front / rear, top / bottom, and left / right directions of the emergency lighting fixture X1 are defined in the directions indicated by arrows in FIG. That is, the vertical direction is the up-down direction of the emergency lighting fixture X1, the normal direction of the wall W1 is the front-back direction of the emergency lighting fixture X1, and the left-right direction when facing the wall W1 is the left-right direction of the emergency lighting fixture X1. The direction. However, the emergency lighting fixture X1 may be installed on the ceiling of the staircase of the building (the lower surface of the landing).

  The emergency lighting fixture X1 includes a first light source unit 1 and a second light source unit 2, as shown in FIGS. 1A, 1B, 3 and 4. The emergency lighting fixture X1 is supplied with power from an ordinary power source (commercial power system) to turn on the first light source unit 1, and is supplied with power from the emergency power source (battery unit 6) to the second light source unit. And a second lighting device 4 that lights 2. The emergency lighting fixture X1 further includes a fixture body 3 that supports the first light source unit 1, the second light source unit 2, and the second lighting device 4 and is attached to the landing wall.

  The instrument body 3 includes a back plate 30 formed in a long rectangular flat plate shape, an upper cover 31 attached to the upper end of the back plate 30, a lower cover 32 attached to the lower end of the back plate 30, and the back plate 30. And a pair of side plates 33 protruding forward from both ends in the longitudinal direction (see FIG. 3).

  The upper cover 31 includes an upper plate 310 formed in a long rectangular flat plate shape, and a first front plate 311 formed in a long rectangular flat plate shape and projecting downward from the front end of the upper plate 310. (See FIG. 3). The upper cover 31 is attached to the back plate 30 so that the upper plate 310 protrudes forward from the upper end of the back plate 30. However, the upper plate 310 and the first front plate 311 are integrally formed by bending a metal plate.

  The lower cover 32 includes a lower plate 320 formed in a long rectangular flat plate shape, and a second front plate 321 formed in a long rectangular flat plate shape and protruding upward from the front end of the lower plate 320. (See FIG. 1B and FIG. 3). The lower cover 32 is attached to the back plate 30 so that the lower plate 320 protrudes forward from the lower end of the back plate 30. However, the lower plate 320 and the second front plate 321 are integrally formed by bending a metal plate.

  The back plate 30 is provided with a plurality of (four in the illustrated example) long holes 300 through which the anchor bolts embedded in the landing wall can be inserted at intervals along the longitudinal direction (FIG. 3). reference). In addition, a plurality of (two in the illustrated example) round holes 301 through which power supply lines for power supply from a normal power supply are inserted are arranged in the longitudinal center of the back plate 30 so as to be aligned in the longitudinal direction. Yes. Further, a plurality (three in the illustrated example) of terminal blocks 34 are attached in the vicinity of the round hole 301 on the front surface of the back plate 30 (see FIG. 3). The terminal block 34 is electrically connected to a power supply line drawn from the round hole 301, a signal line for receiving a fire signal from an automatic fire alarm facility installed in the building, and the like.

  The battery unit 6 has a plurality of secondary batteries such as nickel metal hydride batteries, and the plurality of secondary batteries are housed in a case of a synthetic resin molded body. The battery unit 6 is attached to the left end portion of the front surface of the back plate 30 (see FIG. 3).

  The second lighting device 4 converts the AC power supplied from the normal power source into DC power to charge the battery unit 6 and supplies the battery unit 6 to the second light source unit 2 when the normal power source fails. And a lighting circuit for adjusting the direct current. Further, the second lighting device 4 forcibly stops the charging circuit when a later-described inspection switch is pressed, and the second light source unit 2 is connected to the lighting circuit with DC power supplied from the battery unit 6. Configured to light up. In addition, the 2nd lighting device 4 is attached to the site | part of the right end in the front surface of the backplate 30, as shown in FIG.

  The inspection switch is provided in the switch block 5. The switch block 5 has a box 50 made of synthetic resin (see FIG. 4). The box 50 accommodates an inspection switch including a push button switch, a light receiving element that receives a wireless signal using infrared as a medium, and the like. A plurality of holes are provided in the lower surface of the box body 50, and a push button of an inspection switch can be pushed through these holes and a wireless signal can be received by a light receiving element. Note that the second lighting device 4 forcibly stops the charging circuit and receives the direct current supplied from the battery unit 6 even when the wireless signal is received by the light receiving element, similarly to when the check switch is pushed. The second light source unit 2 is turned on by the lighting circuit with electric power.

  As shown in FIG. 3, the first light source unit 1 includes two LED modules 10 and an attachment member 11 to which the two LED modules 10 are attached in a row. Moreover, the 1st light source unit 1 is provided with the cover 12 attached to the attachment member 11 so that the two LED modules 10 may be covered, and the 1st lighting device 13 (refer FIG. 4).

  The LED module 10 includes a mounting substrate 100 formed in a long rectangular plate shape. The mounting substrate 100 is mounted on the front surface so that a plurality of LEDs 101 are arranged in a line along the left-right direction (longitudinal direction). The two LED modules 10 are electrically connected by a pair of connectors 102.

  The attachment member 11 is formed in a U shape by bending a sheet metal. The attachment member 11 includes a bottom plate 110 that is formed in a long and rectangular plate shape, and a pair of side plates 111 that protrude rearward from the upper end and the lower end of the bottom plate 110. At the rear ends of the pair of side plates 111, as shown in FIG. 4, hooking portions 112 that are curved away from each other (outward) are provided over the entire length. In addition, the two LED modules 10 mentioned above are fixed to the attachment member 11 by the nail | claw formed by raising a part of the baseplate 110 of the attachment member 11, for example.

  Further, the attachment member 11 has a pair of hook metal fittings (not shown) in which the hook-shaped tip protrudes upward from the upper hook portion 112 and an upper side plate 111 at positions near both ends in the longitudinal direction. A pair of hook springs 114 are arranged (see FIG. 4). In addition, a pair of hook springs 114 are comprised by the torsion coil spring, and are attached to the upper side plate 111 so that both ends may face back (refer FIG. 4).

  The first lighting device 13 is configured to convert AC power supplied from a normal power source into DC power, and supply the DC power to the two LED modules 10 for lighting. The first lighting device 13 is attached to the side plate 111 on the rear surface side of the attachment member 11 using, for example, screws (see FIG. 4).

  The cover 12 is formed in a long rectangular box shape whose rear surface (surface on the mounting member 11 side) is opened by a light diffusing material (for example, milky white acrylic resin) (see FIGS. 3 and 4). . As shown in FIG. 4, projecting wall portions 120 projecting rearward are provided at the end portions on the upper and lower sides of the rear surface of the cover 12 over the entire length in the longitudinal direction. Protrusions 121 projecting inwardly (downwardly on the upper protruding wall part 120 and upwardly on the lower protruding wall part 120) are provided at the rear ends of the pair of protruding wall parts 120, respectively. The cover 12 is attached to the mounting member 11 so as to cover the front surface of the mounting member 11 by the projections 121 of the pair of protruding wall portions 120 being respectively hooked on the hooking portions 112 of the pair of side plates 111 of the mounting member 11 ( (See FIG. 4).

  As for the 1st light source unit 1 comprised as mentioned above, the hook-shaped front-end | tip of a pair of hook metal fittings is hooked on the receiving metal fitting 303 provided in the backplate 30 of the instrument main body 3. FIG. Furthermore, the first light source unit 1 is attached to the instrument main body 3 by hooking both ends of the pair of hook springs 114 to the edge of the groove of the hook plate 302 provided on the back plate 30 of the instrument main body 3 (FIG. 4).

  The 2nd light source unit 2 is embodiment of the light source unit which concerns on 1 aspect of this invention. As shown in FIG. 5, the second light source unit 2 includes an LED 20 that is a solid light emitting element, a light guide 21, a case 22, and a cover 23. The LED 20 is, for example, a white LED for illumination. However, the solid light-emitting element is not limited to the LED, and may be, for example, an organic electroluminescence element.

  The light guide 21 is formed in a long prismatic shape (in the illustrated example, a rectangular parallelepiped shape) with a synthetic resin having translucency such as an acrylic resin. However, the light guide 21 may be formed of a non-combustible material having translucency such as silicate glass or quartz glass.

  The case 22 is formed in a long rectangular tube shape by a metal material such as aluminum or an aluminum alloy. A rectangular window 220 is provided on one side surface (lower surface) of the four side surfaces along the longitudinal direction of the case 22.

  The cover 23 is formed in a long rectangular flat plate shape using a non-combustible material having translucency such as silicate glass or quartz glass. The cover 23 is fitted into the window 220 of the case 22 to seal the case 22. The cover 23 is coupled to the case 22 by an appropriate method such as adhesion or screwing.

  The LED 20 is disposed at one end in the longitudinal direction in the case 22 (left end in FIG. 5) so that the optical axis thereof is parallel to the longitudinal direction of the case 22. However, the LED 20 is electrically connected to the second lighting device 4 by an electric wire (not shown), and emits light (lights up) by a direct current supplied from the second lighting device 4.

  The light guide 21 is disposed in the case 22 so that one end face in the longitudinal direction (the left end face in FIG. 5) faces the LED 20. Further, one side surface (lower surface) of the four side surfaces along the longitudinal direction of the light guide 21 is in contact with the cover 23. In the light guide 21, light emitted from the LED 20 is incident on an end surface (incident surface 210) facing the LED 20. The light incident on the light guide 21 from the incident surface 210 is guided in a direction away from the incident surface 210 (rightward in FIG. 5). Further, part of the light traveling in the light guide 21 is emitted from the side surface of the light guide 21 to the outside of the light guide 21, passes through the cover 23, and is emitted outside the case 22.

  Here, the light traveling in the light guide 21 is emitted from the four side surfaces of the light guide 21. Therefore, in order to increase the ratio of light emitted from the LED 20 to the outside of the case 22 from the light guide 21 through the cover 23 (light extraction efficiency), a reflector is provided on the inner peripheral surface of the case 22. It is preferable to be provided. The reflector is formed by, for example, metal plating or white paint. By forming the reflector on the inner peripheral surface of the case 22 in this way, the light emitted from the side surface (upper surface, front surface, rear surface) of the light guide 21 to the outside of the light guide 21 is reflected by the reflector. The light extraction efficiency of the second light source unit 2 can be improved.

  As shown in FIG. 4, the second light source unit 2 is attached to the lower plate 320 of the lower cover 32 of the instrument body 3. The lower surface of the second light source unit 2 (the surface on which the cover 23 is provided) is exposed to the outside of the instrument body 3 through a rectangular hole (exit window 322) that opens at the center in the longitudinal direction of the lower plate 320 ( (See FIG. 1B). That is, the light emitted from the second light source unit 2 is emitted out of the instrument body 3 through the emission window 322.

  For example, as shown in FIG. 2B, the emergency lighting fixture X1 is installed at a substantially horizontal center of the wall W1 of the landing F1. That is, the 2nd light source unit 2 arrange | positioned in the center of the longitudinal direction of the instrument main body 3 opposes the handrail wall Z1 installed in the boundary of the up stairs S1 and the down stairs S2.

  The irradiation range of the second light source unit 2 is approximately the range surrounded by the dashed lines L1 and L2 shown in FIGS. 2A and 2B. That is, the emergency lighting fixture X1 of the first embodiment can be easily reduced in size by shortening the dimension in the longitudinal direction as compared with the conventional example described in Patent Document 1 while realizing desired light distribution characteristics. it can. The desired light distribution characteristic is a light distribution characteristic that can illuminate a floor surface of a landing, a tread surface of a staircase, and the like with an illuminance exceeding the minimum illuminance stipulated by regulations such as the Fire Service Act.

  In the conventional example described in Patent Document 1, when one emergency light source unit is attached near the center in the longitudinal direction of the instrument body, one emergency light source unit is disposed at each end of the instrument body in the longitudinal direction. It is difficult to achieve the same light distribution characteristics. In other words, the emergency light source unit described in Patent Document 1 controls light distribution from the point light source by the lens. Therefore, when the emergency light source unit is displaced in the left-right direction with respect to the handrail wall Z1, part of the light of the emergency light source unit may be blocked by the handrail wall Z1.

  On the other hand, in the emergency lighting fixture X1, since the second light source unit 2 is a linear light source, even when the longitudinal center of the second light source unit 2 is slightly shifted in the left-right direction with respect to the handrail wall Z1. There is an advantage that the light from the second light source unit 2 is not easily blocked by the handrail wall Z1.

  Next, some modified examples of the emergency lighting fixture X1 are illustrated. However, since the emergency lighting fixture X1 of Modifications 1 to 6 exemplified below has the same configuration other than the second light source unit 2, only the second light source unit 2 in Modifications 1 to 6 is The configuration will be described with reference to the drawings.

  First, the 2nd light source unit 2 in the modification 1 is provided with the some recessed part 211 in the side surface (upper surface) on the opposite side to the cover 23 of the light guide 21 (refer FIG. 6A). The plurality of recesses 211 are formed in a cone surface shape (conical surface shape or pyramid surface shape). Air that is a substance having a refractive index smaller than the refractive index of the material forming the light guide 21 (for example, acrylic resin) is present in the recess 211. That is, a part of the light traveling in the light guide 21 is totally reflected at the interface between the light guide 21 and the air in the recess 211 (inner peripheral surface of the recess 211) and is emitted from the lower surface of the light guide 21. The second light source unit 2 in Modification 1 is provided with a plurality of recesses 211 on the upper surface of the light guide 21, so that the second light source unit 2 extends along the longitudinal direction of the light guide 21 compared to the case where the recesses 211 are not provided. Variations in the amount of light (the amount of light emitted through the cover 23) can be suppressed. However, in the 2nd light source unit 2 in the modification 1, several recessed part 211 narrows the space | interval of the adjacent recessed part 211 as the distance from the entrance plane 210 along the longitudinal direction of the light guide 21 becomes long. It is provided to do. That is, as the distance from the incident surface 210 becomes longer, the light traveling in the light guide 21 decreases. However, the longer the distance from the incident surface 210, the more concave portions 211 are arranged. Variations in the amount of light along the longitudinal direction can be further suppressed.

  As shown in FIG. 6B, the second light source unit 2 in Modification 2 is provided with a plurality of recesses 211 on the upper surface of the light guide 21 in the same manner as the second light source unit 2 in Modification 1. Furthermore, in the 2nd light source unit 2 in the modification 2, as the distance from the center part of the longitudinal direction of the light guide 21 becomes short, the some recessed part 211 makes the space | interval of the adjacent recessed part 211 narrow. Is provided. That is, in the second light source unit 2 in the modified example 2, since the concave portions 211 are arranged at the central portion in the longitudinal direction of the light guide 21, the amount of light at the central portion along the longitudinal direction of the light guide 21 is reduced. Can be suppressed.

  As shown in FIG. 6C, the second light source unit 2 in Modification 3 reduces the area of the cross section perpendicular to the longitudinal direction of the light guide 21 as the distance from the incident surface 210 increases. Is configured to do. In other words, the light guide 21 in Modification 3 is formed in a truncated pyramid shape in which the upper surface of the light guide 21 is inclined so as to approach the lower surface of the light guide 21 as the distance from the incident surface 210 increases. That is, in the second light source unit 2 in Modification 3, a part of the light incident from the incident surface 210 is totally reflected by the inclined upper surface of the light guide 21, whereby the light amount along the longitudinal direction of the light guide 21. Can be further suppressed. Moreover, in the 2nd light source unit 2 in the modification 3, the several recessed part 211 is provided in the upper surface of the light guide 21 similarly to the 2nd light source unit 2 in the modification 1, as shown to FIG. 6C. Further, the plurality of recesses 211 are provided so as to reduce the interval between the adjacent recesses 211 as the distance from the incident surface 210 along the longitudinal direction of the light guide 21 increases. Therefore, the second light source unit 2 in Modification 3 can further suppress variations in the amount of light along the longitudinal direction of the light guide 21.

  As shown in FIG. 6D, the second light source unit 2 in Modification 4 is provided with a plurality of protrusions 213 on the upper surface of the light guide 21. The plurality of protrusions 213 are formed in a cone shape (conical shape or pyramid shape). That is, part of the light traveling in the light guide 21 travels into the protrusion 213, is reflected at the interface between the protrusion 213 and the air (the inner peripheral surface of the protrusion 213), and is reflected from the lower surface of the light guide 21. Exit. In the second light source unit 2 in Modification 4, the plurality of protrusions 213 are provided on the upper surface of the light guide 21, so that the second light source unit 2 is arranged in the longitudinal direction of the light guide 21 compared to the case where the protrusions 213 are not provided. Variation in the amount of light along the line can be suppressed. However, in the 2nd light source unit 2 in the modification 4, several protrusion 213 is the space | interval of the adjacent protrusion 213 as the distance from the entrance plane 210 along the longitudinal direction of the light guide 21 becomes long. It is provided so as to narrow. That is, as the distance from the incident surface 210 increases, the light traveling in the light guide 21 decreases. However, the longer the distance from the incident surface 210, the more protrusions 213 are disposed, and thus the light guide 21. The variation in the amount of light along the longitudinal direction can be further suppressed.

  As shown in FIG. 6E, the second light source unit 2 in Modification 5 is provided with a plurality of reflecting portions 214 on the upper surface of the light guide 21. The plurality of reflecting portions 213 are formed of ink attached to the upper surface of the light guide 21 by stencil printing (screen printing) or ink jet printing, for example. That is, a part of the light traveling in the light guide 21 is reflected (diffuse reflection or mixed reflection) by the reflecting portion 214 and is emitted from the lower surface of the light guide 21. In the second light source unit 2 in Modification 5, the plurality of reflecting portions 214 are provided on the upper surface of the light guide 21, so that the second light source unit 2 is arranged in the longitudinal direction of the light guide 21 compared to the case where the reflecting portions 214 are not provided. Variation in the amount of light along the line can be suppressed. However, in the second light source unit 2 in Modification 5, the plurality of reflecting portions 214 are spaced apart from the adjacent reflecting portions 214 as the distance from the incident surface 210 along the longitudinal direction of the light guide 21 increases. It is provided so as to narrow. In other words, since a larger number of reflecting portions 214 are arranged at a portion having a longer distance from the incident surface 210, the variation in the amount of light along the longitudinal direction of the light guide 21 can be further suppressed.

  The 2nd light source unit 2 in the modification 6 has two LED20, as shown to FIG. 6F. One LED 20 is disposed at a position facing one end surface (first incident surface 210 </ b> A) in the longitudinal direction of the light guide 21. The other LED 20 is disposed at a position facing the other end surface (second incident surface 210 </ b> B) in the longitudinal direction of the light guide 21. Furthermore, the light guide 21 in the modified example 6 has a cross section orthogonal to the longitudinal direction of the light guide 21 from the first incident surface 210A and the second incident surface 210B toward the center of the light guide 21 in the longitudinal direction. It is comprised so that an area may be made small. In other words, the light guide 21 in Modification 6 has a prismatic shape in which the upper surface of the light guide 21 is inclined in a V shape from the first incident surface 210A and the second incident surface 210B toward the center of the light guide 21. Is formed. In the second light source unit 2 in Modification 6, the light incident from the first incident surface 210 </ b> A and the light incident from the second incident surface 210 </ b> B are totally reflected on the inclined upper surface of the light guide 21, whereby the light guide 21. The variation in the amount of light along the longitudinal direction can be further suppressed.

[Embodiment 2]
The emergency lighting fixture X2 of the second embodiment is a stairway guide light, like the emergency lighting fixture X1 of the first embodiment. In addition, since the emergency lighting fixture X2 of Embodiment 2 has the same basic configuration as the emergency lighting fixture X1 of Embodiment 1, the same components are denoted by the same reference numerals and appropriately illustrated and illustrated. Description is omitted.

  The emergency lighting fixture X2 of the second embodiment is different from the emergency lighting fixture X1 of the first embodiment in the location of the second light source unit 2 with respect to the fixture body 3. That is, the second light source unit 2 in Embodiment 2 is attached to the second front plate 321 of the lower cover 32 of the instrument body 3 as shown in FIG. The surface (front surface) on which the cover 23 of the second light source unit 2 is provided is exposed to the outside of the instrument body 3 through a rectangular emission window 322 that opens in the center in the longitudinal direction of the second front plate 321 (see FIG. 7). That is, the light radiated from the second light source unit 2 is emitted out of the instrument body 3 through the emission window 322 opened in the front surface (second front plate 321) of the instrument body 3. In addition, the 2nd light source unit 2 in Embodiment 2 may be common with the 2nd light source unit 2 of any one of the modifications 1-6 of the 2nd light source unit 2 in Embodiment 1. FIG.

  Next, some modified examples of the emergency lighting fixture X2 are illustrated. However, since the emergency lighting fixture X2 of the modifications 7 to 10 exemplified below has the same configuration other than the second light source unit 2, only the second light source unit 2 in each of the modifications 7 to 10 The configuration will be described with reference to the drawings.

  First, in the second light source unit 2 in the modified example 7, the side surface (hereinafter referred to as “emission surface 212”) facing the cover 23 of the light guide 21 is recessed toward the inside of the light guide 21 ( (See FIG. 9A). For example, the emission surface 212 in the modified example 7 is formed in a cylindrical surface shape. However, the emission surface 212 is not limited to a cylindrical surface shape, and may be formed into a curved surface shape such as a hyperboloid shape or a conical surface shape.

  FIG. 9B shows the light distribution characteristics in the horizontal direction and the light distribution characteristics in the vertical direction of the second light source unit 2 in Modification 7. However, in FIG. 9B, the light distribution characteristic in the horizontal direction is indicated by a solid line α1, and the light distribution characteristic in the vertical direction is indicated by a broken line β1. As indicated by the solid line α1, the second light source unit 2 in the modified example 7 can irradiate light in an angle range of about 60 ° leftward and rightward when the normal direction of the wall surface is 0 °. it can. Further, as indicated by a broken line β1, the second light source unit 2 in the modified example 7 emits light to an angle range of about 45 ° in the upward and downward directions when the normal direction of the wall surface is 0 °. be able to. That is, in the emergency lighting fixture X2 of the modified example 7, when the exit surface 212 is not recessed, specifically, the exit surface 212 is a plane, and the normal direction of the exit surface 212 is the same as the normal direction of the wall surface. Compared with the case where it does, the irradiation range of a horizontal direction and a perpendicular direction can be expanded.

  In the second light source unit 2 in the modified example 8, similarly to the modified example 7, the emission surface 212 of the light guide 21 is recessed toward the inside of the light guide 21 (see FIG. 10A). The light exit surface 212 of the light guide 21 in the modified example 8 is formed in a planar shape in which the normal direction is inclined upward by several tens of degrees (for example, about 20 degrees) with respect to the normal direction of the wall surface.

  The horizontal light distribution characteristic and the vertical light distribution characteristic of the second light source unit 2 in Modification 8 are shown in FIG. 10B. However, in FIG. 10B, the light distribution characteristic in the horizontal direction is indicated by a solid line α2, and the light distribution characteristic in the vertical direction is indicated by a broken line β2. As indicated by the solid line α2, the second light source unit 2 in the modified example 8 can irradiate light in an angle range of about 60 ° leftward and rightward when the normal direction of the wall surface is 0 °. it can. Further, as indicated by a broken line β2, the second light source unit 2 in the modification 8 has an angle of about 45 ° in the upward direction to about 30 ° in the downward direction when the normal direction of the wall surface is 0 °. Light can be irradiated. That is, the emergency lighting fixture X2 of Modification 8 can expand the irradiation range in the horizontal direction and the vertical upward direction compared to the case where the emission surface 212 is not recessed.

  In the second light source unit 2 in the modified example 9, similarly to the modified example 7, the emission surface 212 of the light guide 21 is recessed toward the inside of the light guide 21 (see FIG. 11A). The light exit surface 212 of the light guide 21 in the modified example 9 is formed in a planar shape in which the normal direction is inclined tens of degrees (for example, about 20 degrees) downward with respect to the normal direction of the wall surface.

  FIG. 11B shows the light distribution characteristics in the horizontal direction and the light distribution characteristics in the vertical direction of the second light source unit 2 in Modification 9. However, in FIG. 11B, the light distribution characteristic in the horizontal direction is indicated by a solid line α3, and the light distribution characteristic in the vertical direction is indicated by a broken line β3. As indicated by the solid line α3, the second light source unit 2 in the modified example 9 can irradiate light in an angle range of about 60 ° leftward and rightward when the normal direction of the wall surface is 0 °. it can. Further, as indicated by the broken line β3, the second light source unit 2 in the modified example 9 has a downward angle of about 45 ° to an upward angle of about 30 ° when the normal direction of the wall surface is 0 °. Light can be irradiated. That is, the emergency lighting fixture X2 of the modified example 9 can expand the irradiation range in the horizontal direction and the vertical downward direction compared to the case where the emission surface 212 is not recessed.

  The second light source unit 2 in Modification 10 includes a light guide 21 in Modification 8 (hereinafter referred to as an upper light guide 21A) and a light guide 21 in Modification 9 (hereinafter referred to as a lower light guide 21B). Called). In the second light source unit 2 in Modification 10, the upper light guide 21A is disposed on the lower light guide 21B so as to be stacked (see FIG. 12). However, the lower side surface (lower surface) of the upper light guide 21A is not in contact with the upper side surface (upper surface) of the lower light guide 21B, and the lower surface of the upper light guide 21A and the upper surface of the lower light guide 21B are not in contact with each other. There is an air layer between them.

  The light distribution characteristic in the horizontal direction and the light distribution characteristic in the vertical direction of the second light source unit 2 in Modification 10 are the light distribution characteristics in Modification 8 shown in FIG. 10B and the light distribution characteristics in Modification 9 shown in FIG. 11B. The light distribution characteristic is obtained by superimposing the characteristic. That is, the second light source unit 2 in Modification 10 can emit light from an angle of about 45 ° upward to an angle of about 45 ° downward when the normal direction of the wall surface is 0 °. . That is, the emergency lighting fixture X2 of the modified example 10 can expand the irradiation range in the horizontal direction and the vertically downward direction as compared with the emergency lighting fixture X2 of the modified example 8 and the modified example 9.

[Embodiment 3]
The emergency lighting fixture X3 of the third embodiment is a stairway guide light, like the emergency lighting fixture X1 of the first embodiment and the emergency lighting fixture X2 of the second embodiment. In addition, since the emergency lighting fixture X3 of Embodiment 3 has the same basic configuration as the emergency lighting fixture X1 of Embodiment 1 and the emergency lighting fixture X2 of Embodiment 2, the common components are The same reference numerals are given, and illustration and description are omitted as appropriate.

  The emergency lighting fixture X3 of Embodiment 3 is characterized by the structure of the second light source unit 2. The second light source unit 2 in Embodiment 3 has two solid light emitting elements, a first LED 20A and a second LED 20B, and a first light guide 21C and a second light guide 21D (see FIG. 13B).

  21 C of 1st light guides are formed in the elongate square frustum shape. The first light guide 21C has one end face in the longitudinal direction of the first light guide 21C (the end face having the larger area) as the incident face 210C. Moreover, 21 C of 1st light guides make the inclined surface (front surface) along the longitudinal direction of 21 C of 1st light guides the output surface 212C.

  The second light guide 21D is formed in a long square frustum shape having the same shape and the same dimensions as the first light guide 21C. The second light guide 21D has one end face in the longitudinal direction of the second light guide 21D (the end face with the larger area) as the incident face 210D. Further, the second light guide 21D has a slope (front surface) along the longitudinal direction of the second light guide 21D as an emission surface 212D. That is, the first light guide 21C and the second light guide 21D have large and small cross-sectional areas orthogonal to the longitudinal direction of the light guides 21C and 21D as the distance from the incident surfaces 210C and 210D increases. Is configured to do.

  In the 2nd light source unit 2 in Embodiment 3, 21 C of 1st light guides are arrange | positioned on 2nd light guide 21D (refer FIG. 13B). Note that the first light guide 21C and the second light guide 21D are arranged such that the end faces in the longitudinal direction are adjacent to each other on the same plane. However, the lower side surface (lower surface) of the first light guide 21C is not in contact with the upper side surface (upper surface) of the second light guide 21D, and the lower surface of the first light guide 21C and the second light guide An air layer is provided between the upper surfaces of 21D.

  The first LED 20A is disposed at a position facing the incident surface 210C of the first light guide 21C. That is, the light radiated from the first LED 20A enters the first light guide 21C from the incident surface 210C of the first light guide 21C. The light that has entered from the incident surface 210C travels in the first light guide 21C in the longitudinal direction of the first light guide 21C and passes through the emission surface 212C of the first light guide 21C to the front of the first light guide 21C. Exit.

  The second LED 20B is disposed at a position facing the incident surface 210D of the second light guide 21D. That is, the light emitted from the second LED 20B enters the second light guide 21D from the incident surface 210D of the second light guide 21D. The light that has entered from the incident surface 210D travels in the second light guide 21D in the longitudinal direction of the second light guide 21D and travels forward of the second light guide 21D through the emission surface 212D of the second light guide 21D. Exit.

  In the second light source unit 2 in the third embodiment, the front end portion of the end on the same side as the incident surface 210C in the longitudinal direction of the first light guide 21C and the same as the incident surface 210D in the longitudinal direction of the second light guide 21D. The front end portion of the end on the side protrudes out (forward) of the cover 23 (see FIG. 13A). Therefore, the emergency lighting fixture X3 of Embodiment 3 has a light distribution characteristic in the horizontal direction that is wider than the case where the first light guide 21C and the second light guide 21D do not protrude outside the cover 23. The amount of light on both the left and right sides of the main body 3 can be increased.

  Here, a display board for displaying the number of floors may be provided on at least one of the walls parallel to the upstairs and the walls parallel to the downstairs among the landing walls. The emergency lighting fixture X3 of Embodiment 3 can improve the visibility of the display board during emergency lighting by expanding the light distribution characteristics in the horizontal direction and increasing the light amounts on the left and right sides of the fixture body 3. .

  Next, some modified examples of the emergency lighting fixture X3 are illustrated. However, since the emergency lighting fixtures X3 of the modified examples 11 to 14 illustrated below have the same configuration other than the second light source unit 2, only the second light source unit 2 in the modified examples 11 to 14 is used. The configuration will be described with reference to the drawings.

  First, in the second light source unit 2 in Modification 11, each of the first light guide 21C and the second light guide 21D is formed in a rectangular parallelepiped shape. 21 C of 1st light guides are accommodated in a case so that the one end of a longitudinal direction may be the entrance surface 210C, and the other edge part of a longitudinal direction protrudes out of a cover (refer FIG. 14). Further, the second light guide 21D is accommodated in the case so that one end in the longitudinal direction serves as an incident surface 210D and the other end in the longitudinal direction protrudes out of the cover (see FIG. 14). . The emergency lighting fixture X3 of the modified example 11 can also increase the light distribution characteristics in the horizontal direction and increase the amount of light on both the left and right sides of the fixture body 3.

  In the second light source unit 2 in Modification 12, the rectangular parallelepiped first light guide 21C and the similarly rectangular parallelepiped second light guide 21D are arranged in a straight line (see FIG. 15A). Further, the first LED 20 </ b> A and the second LED 20 </ b> B are arranged at the center in the longitudinal direction of the instrument body 3 so as to be adjacent to each other along the longitudinal direction of the instrument body 3.

  In the second light source unit 2 in Modification 13, a rectangular parallelepiped first light guide 21C and a similarly rectangular parallelepiped second light guide 21D are arranged in a V shape when viewed from above and below (FIG. 15B). Furthermore, the longitudinal ends of the first light guide 21C and the second light guide 21D protrude forward (downward in FIG. 15B) from the front surface (lower surface in FIG. 15B) of the instrument body 3.

  The second light source unit 2 in Modification 14 is arranged so that the first light guide 21C having a truncated pyramid shape and the second light guide body 21D having the same truncated pyramid shape are aligned on a straight line (see FIG. 15C). ). Furthermore, the longitudinal ends of the first light guide 21C and the second light guide 21D protrude forward (downward in FIG. 15C) from the front surface (lower surface in FIG. 15C) of the instrument body 3. However, the first light guide 21 </ b> C and the second light guide 21 </ b> D each have the larger end surface as the incident surface. Therefore, 1st LED20A and 2nd LED20B are arrange | positioned at the both ends of the longitudinal direction of the instrument main body 3, and are facing the entrance plane of each of 1st light guide 21C and 2nd light guide 21D.

  The emergency lighting fixtures X3 of the modified examples 12 to 14 can also increase the light distribution characteristics in the horizontal direction and increase the amount of light on both the left and right sides of the fixture body 3.

[Embodiment 4]
The emergency lighting fixture X4 of the fourth embodiment is a stairway guide light, like the emergency lighting fixtures X1 to X3 of the first to third embodiments. In addition, since the emergency lighting fixture X4 of Embodiment 4 has the same basic configuration as the emergency lighting fixture X1 of Embodiment 1 and the emergency lighting fixture X2 of Embodiment 2, the common components are The same reference numerals are given, and illustration and description are omitted as appropriate.

  The emergency lighting fixture X4 of the fourth embodiment is characterized by the structure of the second light source unit 2. The second light source unit 2 in Embodiment 4 has two solid-state light emitting elements of the first LED 20A and the second LED 20B and one light guide 21 (see FIGS. 16A and 16B).

  The light guide 21 has a long columnar shape, and is formed in a curved shape so that a central portion in the longitudinal direction protrudes toward the outside (front) of the instrument body 3. In addition, incident surfaces are provided on both end faces of the light guide 21 in the longitudinal direction.

  The first LED 20 </ b> A is disposed at a position facing one incident surface of the light guide 21. 2nd LED20B is arrange | positioned in the position facing the other entrance plane of the light guide 21 (refer FIG. 16B).

  In the second light source unit 2 according to the fourth embodiment, the central portion of the light guide 21 in the longitudinal direction protrudes outside (forward) the cover 23 (see FIG. 16A). Therefore, the emergency lighting fixture X4 of Embodiment 4 increases the light distribution characteristics in the horizontal direction and increases the light amounts on the left and right sides of the fixture body 3 as compared with the case where the light guide 21 does not protrude outside the cover 23. be able to.

  Next, a modified example 15 of the emergency lighting fixture X4 will be described. However, since the emergency lighting fixture X4 of the modification 15 has a configuration other than the second light source unit 2, only the second light source unit 2 is illustrated and described.

  The second light source unit 2 in Modification 15 is provided with a plurality of concave portions 211 on the side surface (rear surface) opposite to the cover 23 of the light guide 21 (see FIG. 17). The plurality of recesses 211 are formed in a cone surface shape (conical surface shape or pyramid surface shape). Air that is a substance having a refractive index smaller than the refractive index of the material forming the light guide 21 (for example, acrylic resin) is present in the recess 211.

  The second light source unit 2 in the modified example 15 is provided with a plurality of recesses 211 on the rear surface of the light guide 21, so that the second light source unit 2 extends along the longitudinal direction of the light guide 21 compared to the case where the recesses 211 are not provided. Variations in the amount of light (the amount of light emitted through the cover 23) can be suppressed. The plurality of recesses 211 are arranged such that straight lines P1 to P10 connecting the vertices (the tops of the cone surfaces) and the centroids (centers of the circles in the case of a cone) of the bottom surfaces (the bottom surfaces of the cone surfaces) intersect at one point. It is preferable (see FIG. 17). The plurality of recesses 211 may be arranged such that the straight lines P1 to P10 are parallel to each other. However, the configuration in which the plurality of recesses 211 are arranged so that the straight lines P1 to P10 intersect at a single point is compared to the configuration in which the plurality of recesses 211 are arranged so that the straight lines P1 to P10 are parallel to each other. The amount of light on both the left and right sides of the main body 3 can be increased.

  In addition, although the emergency lighting fixtures X1 to X4 of Embodiments 1 to 4 are provided with the emission window 322 on the lower surface or the front surface of the fixture body 3, the emission windows are provided on both the lower surface and the front surface of the fixture body 3. It doesn't matter. For example, one exit window may be provided so as to straddle the front end portion of the lower plate 320 of the lower cover 32 and the lower end portion of the second front plate 321.

  In the emergency lighting fixtures X1 to X4 of Embodiments 1 to 4, the light guide 21 is covered with a cover 23 made of an incombustible material, but the light guide 21 is made of silicate glass or quartz glass. If the light-transmitting material is formed of a non-combustible material, it is not necessary to cover the light guide 21 with the cover 23.

  As described above, the emergency lighting apparatus (X1 to X4) according to the first aspect of the present invention illuminates the escape passage including the stairs (S1, S2) and the landing (F1). The emergency lighting fixtures (X1 to X4) include a first light source unit (1) that is lit by being supplied with power from an ordinary power source, and one or more second light source units (2) that are lit by being supplied with power from an emergency power source. Prepare. The emergency lighting fixtures (X1 to X4) support the first light source unit (1) and the second light source unit (2), and the fixture main body (3) attached to the wall (W1) or ceiling of the landing (F1). I have. The 2nd light source unit (2) has a solid light emitting element (LED20) and a light guide (21) formed in the shape of a long column. The light guide (21) has an incident surface (210) on which light emitted from the solid state light emitting device (LED 20) is incident on the end face in the longitudinal direction of the light guide (21). The light guide (21) is configured to guide light incident from the incident surface (210) in a direction away from the incident surface (210) along the longitudinal direction of the light guide (21). The light guide (21) further passes a part of light guided in a direction away from the incident surface (210) from the side surface along the longitudinal direction of the light guide (21) to the outside of the light guide (21). It is comprised so that it may radiate | emit.

  The emergency lighting fixtures (X1 to X4) according to the first aspect can be easily downsized by shortening the dimension in the longitudinal direction as compared with the conventional example described in Patent Document 1.

  The emergency lighting apparatus (X1 to X4) according to the second aspect of the present invention can be realized by a combination with the first aspect. In the emergency lighting fixtures (X1 to X4) according to the second aspect, the fixture main body (3) accommodates the second light source unit (2) inside and is attached to the wall (W1) of the landing (F3). Is preferred. The instrument body (3) is preferably provided with an emission window (322) for emitting light emitted from the second light source unit (2) on at least one of the front surface and the lower surface of the instrument body (3).

  In the emergency lighting apparatus (X1 to X4) according to the second aspect, the exit window (322) is provided on at least one of the front surface and the lower surface of the apparatus body (3), so that the landing (F1) is appropriately illuminated. can do.

  The emergency lighting apparatus (X1 to X4) according to the third aspect of the present invention can be realized by a combination with the first or second aspect. In the emergency lighting apparatus (X1 to X4) according to the third aspect, it is preferable that an incident surface (210) is provided on an end surface in the longitudinal direction of the light guide (21).

  The emergency lighting fixtures (X1 to X4) according to the third aspect can widen the light irradiation range by emitting light from the side surface (exit surface 212) along the longitudinal direction of the light guide (21). .

  The emergency lighting apparatus (X1 to X4) according to the fourth aspect of the present invention can be realized by a combination with any one of the first to third aspects. In the emergency lighting fixtures (X1 to X4) according to the fourth aspect, the second light source unit (2) reflects the light emitted from the light guide (21) toward the outside of the fixture body (3). It is preferable to have a body (case 22).

  The emergency lighting fixtures (X1 to X4) according to the fourth aspect reflect light in the second light source unit (2) by reflecting light emitted from the light guide (21) to the reflector (case 22). The take-out efficiency can be improved.

  The emergency lighting apparatus (X1 to X4) according to the fifth aspect of the present invention can be realized by a combination with any one of the first to fourth aspects. In the emergency lighting apparatus (X1 to X4) according to the fifth aspect, the light guide (21) is provided with a plurality of recesses (211) on the side surface along the longitudinal direction of the light guide (21). It is preferable.

  In the emergency lighting fixtures (X1 to X4) according to the fifth aspect, part of the light traveling in the light guide (21) is entirely at the air interface in the light guide (21) and the recess (211). Since the light is reflected and emitted from the side surface of the light guide (21), variation in the amount of light along the longitudinal direction of the light guide (21) can be suppressed.

  The emergency lighting fixture (X1 to X4) according to the sixth aspect of the present invention can be realized in combination with the fifth aspect. In the emergency lighting apparatus (X1 to X4) according to the sixth aspect, it is preferable that an incident surface (210) is provided on an end surface in the longitudinal direction of the light guide (21). The plurality of recesses (211) are provided so as to narrow the interval between the adjacent recesses (211) as the distance from the incident surface (210) along the longitudinal direction of the light guide (21) becomes longer. It is preferable.

  The emergency lighting fixtures (X1 to X4) according to the sixth aspect can further suppress variations in the amount of light along the longitudinal direction of the light guide (21).

  The emergency lighting apparatus (X1 to X4) according to the seventh aspect of the present invention can be realized in combination with the fifth aspect. In the emergency lighting apparatus (X1 to X4) according to the seventh aspect, it is preferable that an incident surface (210) is provided on an end surface in a longitudinal direction of the light guide (21). The plurality of recesses (211) are preferably provided so as to narrow the interval between the adjacent recesses (211) as the distance from the longitudinal central portion of the light guide (21) becomes shorter. .

  The emergency lighting fixtures (X1 to X4) according to the seventh aspect can further suppress variations in the amount of light along the longitudinal direction of the light guide (21).

  The emergency lighting apparatus (X1 to X4) according to the eighth aspect of the present invention can be realized by a combination with any one of the first to seventh aspects. In the emergency lighting apparatus (X1 to X4) according to the eighth aspect, it is preferable that the light guide (21) is provided with an incident surface (210) on an end face in the longitudinal direction of the light guide (21). . The light guide (21) is preferably configured to reduce the cross-sectional area perpendicular to the longitudinal direction of the light guide (21) as the distance from the incident surface (210) increases.

  In the emergency lighting fixtures (X1 to X4) according to the eighth aspect, a part of the light incident from the incident surface (210) is totally reflected by the inclined side surface of the light guide (21), whereby the light guide The variation in the amount of light along the longitudinal direction of (21) can be further suppressed.

  The emergency lighting fixtures (X1 to X4) according to the ninth aspect of the present invention can be realized by a combination with any one of the first to eighth aspects. In the emergency lighting apparatus (X1 to X4) according to the ninth aspect, the light guide (21) is preferably provided with an incident surface (210) on an end face in the longitudinal direction of the light guide (21). . The light guide (21) is further configured to emit light from the incident surface (210) from the side surface (exit surface 212) along the longitudinal direction while guiding the light along the longitudinal direction. preferable. The side surface (exit surface 212) of the light guide (21) is recessed in the direction opposite to the direction in which light exits from the side surface (exit surface 212).

  The emergency lighting fixtures (X1 to X4) according to the ninth aspect can widen the irradiation range of the second light source unit (2) as compared with the case where the side surface (exit surface 212) is not recessed.

  The emergency lighting fixture (X2, X3) according to the tenth aspect of the present invention can be realized by a combination with any one of the first to ninth aspects. In the emergency lighting apparatus (X2, X3) according to the tenth aspect, the second light source unit (2) preferably includes a plurality of solid light emitting elements (LEDs 20) and light guides (21). It is configured so that the irradiation ranges of light emitted from a plurality of light guides (upper light guide 21A, lower light guide 21B, first light guide 21C, second light guide 21D) do not overlap at least partially. It is preferable.

  The emergency lighting fixtures (X2, X3) according to the tenth aspect can widen the irradiation range of the second light source unit (2) as compared with the case where the number of the light guides (21) is one.

  The emergency lighting fixture (X3) according to the eleventh aspect of the present invention can be realized in combination with the tenth aspect. In the emergency lighting apparatus (X3) according to the eleventh aspect, the plurality of light guides (21) are each formed of a first light guide (21C) and a second light guide ( 21D). The plurality of solid state light emitting elements include a first solid state light emitting element (first LED 20A) that makes light incident on the first light guide (21C), and a second solid state light emitting element that makes light incident on the second light guide (21D) ( 2nd LED20B). The first light guide (21C) is preferably formed in a long columnar shape, and an incident surface (210C) is preferably provided on an end surface in the longitudinal direction of the first light guide (21C). The first light guide (21C) further guides light incident from the incident surface (210C) of the first light guide (21C) along the longitudinal direction of the first light guide (21C). The light guide body (21C) is preferably configured to emit light from a side surface (exit surface 212C) along the longitudinal direction. The second light guide (21D) is preferably formed in a long columnar shape, and an incident surface (210D) is preferably provided on an end surface in the longitudinal direction of the second light guide (21D). The second light guide (21D) further guides light incident from the incident surface (210D) of the second light guide (21D) along the longitudinal direction of the second light guide (21D). It is preferable to be configured to emit light from a side surface (exit surface 212D) along the longitudinal direction of the two light guides (21D). The second light source unit (2) has a side surface (exit surface 212C) of the first light guide (21C) and a side surface (exit surface 212D) of the second light guide (21D) with respect to the instrument body (3). It is preferable that they are accommodated in the instrument body (3) in a state where they are inclined in different directions.

  The emergency lighting fixture (X3) according to the eleventh aspect can further expand the irradiation range of the second light source unit (2).

  The emergency lighting fixture (X3) according to the twelfth aspect of the present invention can be realized in combination with the eleventh aspect. In the emergency lighting fixture (X3) according to the twelfth aspect, the first light guide (21C) and the second light guide (21D) are respectively the first light guide (21C) and the second light guide ( 21D) is preferably provided with an incident surface (210C, 210D) on the end face in the longitudinal direction. The first light guide (21C) and the second light guide (21D) are orthogonal to the longitudinal direction of the light guide (21C, 21D) as the distance from the incident surface (210C, 210D) increases. It is preferable that the cross-sectional area is reduced.

  The emergency lighting fixture (X3) according to the twelfth aspect can further suppress variation in the amount of light along the longitudinal direction of the first light guide (21C) and the second light guide (21D).

  The emergency lighting fixture (X3) according to the thirteenth aspect of the present invention can be realized in combination with the eleventh or twelfth aspect. In the emergency lighting fixture (X3) according to the thirteenth aspect, the second light source unit (2) includes the first solid state light emitting device (first LED 20A) and the second solid state light emitting device (second LED 20B) as the first light guide. (21C) and the second light guide (21D) are preferably housed in the instrument body (3) so as to face each other.

  The emergency lighting fixture (X3) according to the thirteenth aspect can widen the light distribution characteristics and increase the amount of light on both the left and right sides of the fixture body 3.

  The emergency lighting apparatus (X4) according to the fourteenth aspect of the present invention can be realized by a combination with any one of the first to thirteenth aspects. In the emergency lighting apparatus (X4) according to the fourteenth aspect, the light guide (21) is preferably formed in a long column shape. The light guide (21) is provided with an incident surface (210) on the end face in the longitudinal direction of the light guide (21), and the central portion in the longitudinal direction protrudes outside the instrument body (3). It is preferable that it is formed in a curved shape so as to make it.

  The emergency lighting fixture (X4) according to the fourteenth aspect can widen the light distribution characteristics and increase the amount of light on both the left and right sides of the fixture body 3.

  The light source unit (second light source unit 2) according to the fifteenth aspect of the present invention is a light source unit (second light source unit 2) provided in any one of the first to fourteenth emergency lighting fixtures (X1 to X4). It is. The light source unit (second light source unit 2) according to the fifteenth aspect includes a solid light emitting element (LED 20) and a light guide (21) formed in a long column shape. The light guide (21) has an incident surface (210) on which light emitted from the solid state light emitting device (LED 20) is incident on the end face in the longitudinal direction of the light guide (21). The light guide (21) guides light incident from the incident surface (210) in a direction away from the incident surface (210) along the longitudinal direction of the light guide (21). The light guide (21) emits part of the light guided in a direction away from the incident surface (210) to the outside of the light guide (21) from the side surface along the longitudinal direction of the light guide (21). It is configured as follows.

  The light source unit (second light source unit 2) according to the fifteenth aspect can be easily reduced in size by shortening the dimension in the longitudinal direction as compared with the conventional example described in Patent Document 1.

X1 to X4 Emergency lighting equipment 1 First light source unit 2 Second light source unit (light source unit)
3 fixture body 20 LED (solid state light emitting device)
20A 1st LED (first solid state light emitting device)
20B 2nd LED (2nd solid state light emitting element)
21 Light guide 21A Upper light guide (light guide)
21B Lower light guide (light guide)
21C 1st light guide 21D 2nd light guide 22 Case (reflector)
210 Entrance surface 211 Recessed portion 212 Exit surface (side surface)
322 Exit window

Claims (15)

An emergency lighting fixture that illuminates an escape passage including stairs and landings,
A first light source unit that is powered by a utility power source and lights up;
One or more second light source units that are powered by an emergency power source and lit;
An instrument body that supports the first light source unit and the second light source unit and is attached to the wall or ceiling of the landing,
The second light source unit is
A solid state light emitting device;
And a light guide formed in a long column shape,
The light guide has an incident surface on which light emitted from the solid-state light emitting element is incident on an end face in the longitudinal direction of the light guide, and the light incident from the incident surface is disposed in the longitudinal direction of the light guide. Along the direction away from the incident surface, and part of the light guided in the direction away from the incident surface is emitted from the side surface along the longitudinal direction of the light guide to the outside of the light guide. Configured to let
Emergency lighting equipment. The instrument main body accommodates the second light source unit therein and is attached to the wall of the landing, and emits light emitted by the second light source unit on at least one of the front surface and the lower surface of the instrument main body. An exit window is provided,
The emergency lighting apparatus according to claim 1. The incident surface is provided on an end face in the longitudinal direction of the light guide,
The emergency lighting apparatus according to claim 1 or 2. The second light source unit has a reflector that reflects the light emitted from the light guide toward the outside of the instrument body.
The emergency lighting fixture of any one of Claims 1-3. A plurality of recesses are provided on the side surface along the longitudinal direction of the light guide,
The emergency lighting fixture of any one of Claims 1-4. The incident surface is provided on an end surface in the longitudinal direction of the light guide,
The plurality of recesses are provided so as to narrow the interval between adjacent recesses as the distance from the incident surface along the longitudinal direction of the light guide increases.
The emergency lighting apparatus according to claim 5. The incident surface is provided on an end surface in the longitudinal direction of the light guide,
The plurality of recesses are provided so as to narrow the interval between adjacent recesses as the distance from the central portion in the longitudinal direction of the light guide decreases.
The emergency lighting apparatus according to claim 5. The light guide has a cross section perpendicular to the longitudinal direction of the light guide, as the incident surface is provided on an end face in the longitudinal direction of the light guide, and as the distance from the incident surface increases. Configured to reduce the area of
The emergency lighting fixture of any one of Claims 1-7. The light guide is provided with the incident surface on the end face in the longitudinal direction of the light guide,
The light guide is further configured to guide light incident from the incident surface along the longitudinal direction and emit the light from the side surface along the longitudinal direction,
The side surface of the light guide is recessed in a direction opposite to the direction in which the light exits from the side surface;
The emergency lighting fixture of any one of Claims 1-8. The second light source unit includes a plurality of the solid-state light emitting elements and the light guides, and is configured so that irradiation ranges of light emitted from the plurality of light guides do not overlap at least partially.
The emergency lighting fixture of any one of Claims 1-9. The plurality of light guides include a first light guide and a second light guide that are each formed in a long columnar shape,
The plurality of solid state light emitting elements include a first solid state light emitting element that makes light incident on the first light guide, and a second solid state light emitting element that makes light incident on the second light guide,
The first light guide is formed in a long columnar shape, and an incident surface is provided on an end surface in a longitudinal direction of the first light guide,
The first light guide further guides light incident from the incident surface of the first light guide along the longitudinal direction of the first light guide in the longitudinal direction of the first light guide. Configured to emit from the side surface along,
The second light guide is formed in a long columnar shape, and an incident surface is provided on an end face in a longitudinal direction of the second light guide,
The second light guide further guides light incident from the incident surface of the second light guide along the longitudinal direction of the second light guide in the longitudinal direction of the second light guide. Configured to emit from the side surface along,
The second light source unit is accommodated in the instrument body in a state where the side surface of the first light guide and the side surface of the second light guide are inclined in different directions with respect to the instrument body. ing,
The emergency lighting apparatus according to claim 10. Each of the first light guide and the second light guide is provided with the incident surface on the end surface in the longitudinal direction of the first light guide and the second light guide, and from the incident surface. It is configured to reduce the area of the cross section perpendicular to the longitudinal direction of the light guide as the distance increases.
The emergency lighting apparatus according to claim 11. The second light source unit is housed in the instrument body so that the first solid light emitting element and the second solid light emitting element are opposed to each other with the first light guide and the second light guide interposed therebetween. Yes,
The emergency lighting apparatus according to claim 11 or 12. The light guide is formed in a long columnar shape, the incident surface is provided on an end surface in the longitudinal direction of the light guide, and the central portion in the longitudinal direction is projected outside the instrument body. Formed into a curved shape,
The emergency lighting fixture of any one of Claims 1-13. It is a light source unit with which the emergency lighting fixture of any one of Claims 1-14 is equipped,
A solid state light emitting device;
And a light guide formed in a long column shape,
The light guide has an incident surface on which light emitted from the solid-state light emitting element is incident on an end face in the longitudinal direction of the light guide, and the light incident from the incident surface is disposed in the longitudinal direction of the light guide. Along the direction away from the incident surface, and part of the light guided in the direction away from the incident surface is emitted from the side surface along the longitudinal direction of the light guide to the outside of the light guide. Configured to let
Light source unit.

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