Indicator Lights

Abstract

To provide a display lamp which can increase the brightness without increasing the power consumption.SOLUTION: In a display lamp 1, a light emission display unit 2a emits light by using light of a light emission element 6 as a light source and displays the position of a disaster prevention apparatus. The display lamp includes a pair of light emission element substrates 7 of which substrate surface 7a sides facing a radiation direction of the light emission element 6 face each other and has a light reflection unit 7aa for reflecting light from the light emission element 6 radiated from one of the substrate surfaces 7a to the light emission display unit 2a, in the side of the other of the substrate surfaces 7a.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an indicator light that indicates the location of disaster prevention equipment. [Background technology]

[0002] Indicator lights for indicating the location of disaster prevention equipment are provided in various disaster prevention facilities, such as indicator lights for fire hydrant facilities, emergency alarm facilities, and automatic fire alarm facilities. The indicator lights use light from a light-emitting element as a light source to emit light from a light-emitting display unit, thereby indicating the location of the disaster prevention equipment (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-16818 Summary of the Invention [Problem to be solved by the invention]

[0004] Indicator lights are also provided in disaster prevention facilities for tunnels (road tunnels, etc.). Specifically, they are provided on the housings of disaster prevention equipment such as fire hydrant devices and fire extinguisher boxes installed along roadways (on inspection roads, etc.).

[0005] Disaster prevention equipment for tunnels must be able to see the indicator lights from vehicles traveling on the roadway, and good visibility from the side is also required. One way to improve the visibility of indicator lights is to increase their luminosity. Increasing the number of light-emitting elements, which are the light source, can increase the luminosity of the indicator lights, but this increases the number of parts and makes the structure more complex.

[0006] SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide an indicator lamp that can improve luminous intensity with a simple structure. [Means for solving the problem]

[0007] The present invention is an indicator lamp in which a light-emitting display unit emits light using a light-emitting element as a light source and indicates the location of disaster prevention equipment, As they move apart to the left and right, The substrate surfaces facing the light emitting element in the light emitting direction are opposed to each other. and tilted left and right toward the light-emitting display unit. be established A pair of light-emitting element substrates is provided, and the pair of light-emitting element substrates include: A light reflecting section is provided on at least one of the substrate surfaces, which reflects light emitted from the light emitting element from the opposing other substrate surface toward the light emitting display section. At the same time, the light emitting element is arranged so that light on the optical axis is directed directly toward the light emitting display unit. Indicator light characterized by mosquito , an indicator light in which a light-emitting display unit emits light from a light-emitting element as a light source and indicates the location of disaster prevention equipment, the indicator light comprising a pair of light-emitting element substrates, the substrate surfaces facing the radiation direction of the light of the light-emitting element being arranged opposite each other, and at least one of the substrate surfaces being provided with a light reflecting unit that reflects the light of the light-emitting element emitted from the other opposing substrate surface toward the light-emitting display unit, the light-emitting element being arranged so that the optical axis is perpendicular to the substrate surface side of the light-emitting element substrate, the pair of light-emitting element substrates being spaced apart from each other on the left and right so that the optical axis passes directly through the light-emitting display unit, and the substrate surface sides are arranged inclined left and right so that they face the light-emitting display unit; or an indicator light in which a light-emitting display unit emits light using a light-emitting element as a light source and indicates the location of disaster prevention equipment, the indicator light comprising a pair of light-emitting element substrates, the substrate surfaces facing the radiation direction of the light of the light-emitting elements being arranged opposite each other, and at least one of the substrate surfaces being provided with a light-reflecting unit that reflects the light of the light-emitting elements emitted from the opposing other substrate surface toward the light-emitting display unit, the light-emitting elements being mounted on the back surface of the substrate opposite to the substrate surface side, with the light-emitting units exposed on the substrate surface side through through holes, and the pair of light-emitting element substrates further comprising a light-reflecting layer on the front and back of the base material of at least one of the substrates, which guides the light of the light-emitting elements that enters from the side of the through hole and emits it from the front end of the substrate on the light-emitting display unit side toward the light-emitting display unit; an indicator light in which a light-emitting display unit emits light using a light-emitting element as a light source and indicates the location of disaster prevention equipment, the indicator light comprising a pair of light-emitting element substrates, the substrate front surfaces of which face the radiation direction of the light of the light-emitting elements being opposed to each other, and at least one of the substrate front surfaces being provided with a light reflecting portion that reflects the light of the light-emitting element emitted from the other opposing substrate front surface side towards the light-emitting display unit, the light-emitting element being mounted on the back surface side of the substrate opposite to the substrate front surface side, with the light-emitting portion being exposed to the substrate front surface side via a through hole, and the light reflecting portion also functions to guide the light of the light-emitting element that is incident from the side of the through hole and emit it from the front end of the substrate on the light-emitting display unit side towards the light-emitting display unit; is.

[0008] In this invention, the pair of light-emitting element substrates may be arranged so that the substrate surface sides face each other and are oriented toward the light-emitting display unit. The light-reflecting unit may form a surface layer on the substrate surface side. The light-reflecting unit may be white, or may be the same color as the light-emitting display unit and / or the same color as the light-emitting element. The light-emitting element may be mounted on the substrate surface side. The light-emitting element may be mounted on the substrate back side opposite the substrate surface side, with the light-emitting unit exposed to the substrate surface side through a through hole. The pair of light-emitting element substrates may further include a light-reflecting layer on the front or rear surface of the base material of at least one of the substrates, which guides light from the light-emitting elements incident from the side surfaces of the through-holes and emits it from the front end of the substrate on the light-emitting display unit side toward the light-emitting display unit. The light-reflecting layer may also function as a light-guiding layer for guiding light from the light-emitting elements incident from the side surfaces of the through-holes and emitting it from the front end of the substrate on the light-emitting display unit side toward the light-emitting display unit. [Effects of the Invention]

[0009] In this invention, the light-emitting display section can be made to emit light not only by light that is directed directly from the light-emitting element to the light-emitting display section, but also by light that is reflected by the light-reflecting section provided on the opposing light-emitting element substrate and directed to the light-emitting display section. Therefore, the amount of light emitted by the light-emitting display section can be increased and its luminous intensity can be improved without increasing the number of light-emitting elements or otherwise complicating the structure.

[0010] Therefore, according to the present invention, an indicator lamp that can improve luminous intensity with a simple structure can be obtained. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front view of the entire front side of an indicator light according to an embodiment of the present invention; [Figure 2] 2 is an enlarged cross-sectional view (taken along line AA in FIG. 1) of the entire indicator light of the same. [Figure 3] FIG. 2 is an enlarged front view of the indicator light body with the front panel, cover, and bottom plate removed. [Figure 4] FIG. 2 is an enlarged front view of the substrate surface side of the LED element substrate alone. [Figure 5] FIG. [Figure 6] This shows an example of disaster prevention equipment in which the above-mentioned indicator light is installed, and is a front view of the front side of the housing of a tunnel fire hydrant device in which an indicator light is installed. DETAILED DESCRIPTION OF THE INVENTION

[0012] An example of an embodiment of the indicator light of the present invention will be described below as indicator light 1 with reference to Figures 1 to 6. The indicator light of the present invention can be used as an indicator light for indicating the location of various disaster prevention equipment, such as an indicator light for fire hydrant equipment, an indicator light for emergency alarm equipment, an indicator light for automatic fire alarm equipment, etc.

[0013] Here, the terms used to describe the indicator light of this invention, such as "front," "rear," "left," and "right," which indicate position and direction, are used according to the position and direction of the indicator light in its installed state.

[0014] [whole] The indicator light 1 comprises a cover 2 and a main body 3 to the front of which the cover 2 is attached (see Figures 1 to 5), and is installed on various disaster prevention equipment. The light-emitting display unit 2a (details will be explained later) on the cover 2 emits light using an LED element 6 (details will be explained later) installed in the main body 3 as a light source, thereby indicating the location of the various disaster prevention equipment.

[0015] The indicator light 1 further includes a front panel 4 that is attached to the front of the body 3 together with the cover 2 (see FIGS. 1, 2 and 5).

[0016] [Light-emitting display] The cover 2 has a light-emitting display portion 2a that is circular when viewed from the front and is exposed to the outside through the opening 4a in the front panel 4 (see FIGS. 1 and 5). The light-emitting display portion 2a is translucent and, as described above, emits light from the LED element 6 provided in the main body 4 as a light source.

[0017] More specifically, the indicator light 1 is provided on, for example, the front surface of the housing of various disaster prevention devices with the light-emitting indicator 2a exposed to the outside (see FIG. 6).

[0018] In the illustrated example, the light-emitting display unit 2a has a flat front surface (see FIG. 2), but the front surface may be a convex surface that protrudes forward, or a concave surface that recesses toward the rear. Note that if the front surface of the light-emitting display unit 2a is flat or concave and the light-emitting display unit 2a is made thin, or if the light-emitting display unit 2a has a convex surface but the protruding dimension is reduced to make it thin, the indicator lamp 1 can be made thin.

[0019] [Light-emitting element, light-emitting element substrate] LED elements, LED element substrates The indicator light 1 includes a plurality of LED elements 6 (an example of a light-emitting element) that serve as a light source for the light-emitting display portion 2a (see FIGS. 4 and 5). The LED elements 6 are mounted on an LED element substrate 7 (an example of a light-emitting element substrate) and provided inside the main body 3 (see FIGS. 2 and 3), and emit light from the back side of the light-emitting display portion 2a, causing the light-emitting display portion 2a to emit light.

[0020] Opposite arrangement of LED element boards, light reflecting part The LED element substrates 7 are arranged as a pair of two substrates, one on the left and one on the right, behind the back surface of the light-emitting display unit 2a within the main body 3, with the substrate surfaces 7a facing the direction of light emission of the LED elements 6 facing each other and facing the light-emitting display unit 2a (see Figures 2 and 3).

[0021] The pair of LED element substrates 7 may have more than two substrates. Alternatively, they may be provided as a pair, one above the other. Furthermore, as will be described in detail later, an additional LED element substrate may be provided in addition to the pair of LED element substrates 7.

[0022] The pair of LED element substrates 7 are provided with a light reflecting portion 7aa on the substrate surface 7a side of at least one substrate, which reflects light from the LED elements 6 emitted from the substrate surface 7a side of the opposing other substrate toward the light-emitting display portion 2a side (see, for example, the light trajectory indicated by the arrow 6A in Figure 2) (see Figures 2 and 3).

[0023] Some of the light emitted from the LED elements 6 does not directly travel toward the light-emitting display unit 2a. However, some of this light, but not all of it, can be redirected toward the light-emitting display unit 2a by the light reflecting portion 7aa (see, for example, the light trajectory indicated by the arrow 6A in FIG. 2). In other words, in the indicator lamp 1, the light reflecting portion 7aa causes the light-emitting display unit 2a to emit light not only from the light that travels directly from the LED elements 6 toward the light-emitting display unit 2a, but also from the light that is reflected by the light reflecting portion 7aa provided on the LED element substrate and travels toward the light-emitting display unit 2a. This improves the light utilization efficiency of the LED elements 6, and increases the amount of light emitted by the light-emitting display unit 2a without increasing the number of LED elements or otherwise complicating the structure, thereby improving the luminosity with a simple structure.

[0024] In the illustrated example, the light reflecting portion 7aa is provided on both of the pair of LED element substrates 7. If it is provided on at least one of the substrates, the luminous intensity of the light emitting display portion 2a can be increased, as described above, but if it is provided on both substrates, the luminous intensity of the light emitting display portion 2a can be further improved.

[0025] -Examples of light-reflecting parts ··structure The light reflecting portion 7aa may be, for example, a surface layer formed of an insulating and light-reflective material and constituting part or all of the surface of the substrate surface 7a. The surface layer forming the light reflecting portion 7aa may be a single layer, or may have a structure in which a light-transmitting insulating layer is laminated on a light-reflective layer.

[0026] ··color The light reflecting portion 7aa may be white, for example. Alternatively, the light reflecting portion 7aa may be the same color as the color of the light-emitting display portion 2a and / or the light emitted by the LED elements 6. Specifically, for example, if either the color of the light-emitting display portion 2a or the light emitted by the LED elements 6 is red, the light reflecting portion 7aa may be red. If either the color of the light-emitting display portion 2a or the light emitted by the LED elements 6 is green, the light reflecting portion 7aa may be green. Alternatively, if both the color of the light-emitting display portion 2a and the light emitted by the LED elements 6 are red, the light reflecting portion 7aa may be red. Alternatively, if both the color of the light-emitting display portion 2a and the light emitted by the LED elements 6 are green, the light reflecting portion 7aa may be green.

[0027] The light reflecting portion 7aa may be white, even if it is a different color from the color of the light emitting display portion 2a. The light emitting color of the LED elements 6 may also be white. By doing so, even if the color of the light emitting display portion 2a is red or green, for example, an LED element substrate 7 having a white light reflecting portion 7aa and white light emitting LED elements 6 can be used, allowing for standardization of components.

[0028] ·Formation method The light-reflecting portion 7aa can be formed by applying a material that is both insulating and light-reflective, for example, a solder resist material such as white, using various printing methods such as screen printing or various painting methods such as spraying.

[0029] Inclined arrangement of LED element boards More specifically, the pair of LED element substrates 7 are disposed behind the back surface of the light-emitting display unit 2a in the main body 3, spaced apart from each other, with their substrate surfaces 7a facing each other and tilted left and right toward the back surface of the light-emitting display unit 2a (see FIG. 2). The LED elements 6 are disposed with their optical axes (not shown) perpendicular to the substrate surface 7a. However, because the pair of LED element substrates 7 are disposed with the above-described tilted left and right orientation, those whose optical axes are positioned to directly pass through the light-emitting display unit 2a emit light whose optical axes are tilted left and right with respect to the front direction 2A, which is parallel to the central axis 2X of the light-emitting display unit 2a. This allows the light-emitting display unit 2a to emit strong light to the left and right sides, even if it is thin, thereby improving the luminous intensity to the left and right sides.

[0030] In the illustrated example, the pair of LED element substrates 7 are placed on a mounting portion 3b provided on the bottom wall 3a of the main body 3, and are clamped between a pressing portion 5 and the like (details of which will be explained later) provided on the back side of the cover 2, and are fixed in the inclined state as described above (see Figure 2).

[0031] Here, the light from the LED element 6 that is reflected by the light-reflecting portion 7aa and directed toward the light-emitting display portion 2a passes through the light-emitting display portion 2a and travels toward the front and the left and right sides (see, for example, the trajectory of light indicated by the arrow 6A in FIG. 2). In other words, the light-reflecting portion 7aa can improve the luminous intensity in both the front and the left and right sides.

[0032] -Reverse mounting of LED elements In the illustrated example, the LED element 6 is reverse-mounted on the back surface 7b of the substrate. That is, the LED element substrate 7 has through-holes 7c at the mounting locations of the LED elements 6 (see FIG. 4 ). The LED elements 6 are electrically connected and fixed to the back surface 7b of the substrate by soldering or the like, with the light-emitting portions 6a exposed to the front surface 7a of the substrate through the through-holes 7c (see FIG. 4 ). While the LED elements 6 may be mounted on the front surface 7a of the substrate, reverse-mounting on the back surface 7b of the substrate allows for the elimination of factors that may hinder the formation of the light-reflecting portion 7aa, such as terminals, molded portions, and soldered portions, from the front surface 7a of the substrate, thereby enabling the light-reflecting portion 7aa to be formed over a larger area.

[0033] -Use as a light guide member for LED element substrates By providing light-reflecting layers for total reflection on the front and back of the substrate forming the LED element substrate 7 (the light-reflecting layer for total reflection on the substrate surface 7a side may be the surface layer forming the light-reflecting portion 7aa, or may be provided separately), and by providing the LED elements 6 in a rear-mounted configuration as described above, it is possible to totally reflect the incident light from the LED elements 6 within the LED element substrate 7, although this is only for a portion of the light that enters the LED element substrate 7 from the side of the through-hole 7c, and to emit the incident light from the front end (upper end in FIG. 4) of the LED element substrate 7 toward the light-emitting display portion 2a, and this emitted light can also cause the light-emitting display portion 2a to emit light. This also improves the light utilization rate of the LED elements 6 and the luminous intensity of the light-emitting display portion 2a.

[0034] Furthermore, when the LED element substrate 7 is disposed at an angle as described above, in a front view, the portions of the light-emitting display unit 2a that overlap with the LED element substrate 7 and the portion inside the main body 3 on the back side of the LED element substrate 7 (the gap between the main body 3 and the peripheral wall) are less likely to receive light from the LED elements 6 or are shadowed by the LED element substrate 7, and are therefore more likely to be dark than other portions. However, by emitting light from the LED elements 6 from the front end portion (the upper end portion in FIG. 4 ) of the LED element substrate 7 toward the light-emitting display unit 2a as described above, the light from the LED elements 6 can be made to enter the portions of the light-emitting display unit 2a that are likely to be dark, and the LED element substrate 7 itself can be made to emit light at the front end portion, thereby reducing the difference in brightness between other portions and making the light-emitting display unit 2a brightly illuminated across the entire surface.

[0035] ·Bottom plate In the illustrated example, a bottom plate 8 is provided between the pair of LED element substrates 7 (see FIG. 5). Wiring 9 is drawn from a terminal stand 10 provided on the back side of the bottom wall 3a of the main body 3 and connected to the pair of LED element substrates 7 and passes through the back side of the bottom plate 8 (see FIGS. 2 and 3). Locking pieces 8c are provided on both upper and lower sides (both left and right sides in FIG. 4) of the bottom plate 8 (see FIG. 5). The locking pieces 8c are inserted into locking holes 7d provided on the bottom sides of the pair of LED element substrates 7 (see FIGS. 4 and 5), thereby assembling the bottom plate 8 to the pair of LED element substrates 7. The bottom plate 8 is fixed to the main body 3 on both left and right sides (both upper and lower sides in FIG. 4) by heat welding or the like.

[0036] The bottom plate 8 functions as a screen to hide the wiring 9 and the like on its back side, but the front side 8a facing the light-emitting display unit 2a may be painted in a color corresponding to the light-reflecting unit 7aa or a color with high light reflectivity, or the material itself may be made of a material with high light reflectivity such as white resin or glass, so that it functions as a light-reflecting unit that reflects light from the LED elements 6 toward the light-emitting display unit 2a.

[0037] - LED element board fixing method The pair of LED element substrates 7 may be fixed using fixing members such as screws or by thermal welding using welding ribs. However, as in the illustrated example, they may be clamped by a clamping structure between a mounting portion 3b provided on the bottom wall 3a of the main body 3 and a convex pressing portion 5 (see FIG. 2) provided on the rear side of the cover 2, which presses against a concave shoulder portion 7e provided at the front end (upper end in FIG. 4) of the LED element substrate 7. This clamping structure eliminates the need for fixing members such as screws and allows the light reflecting portion 7aa to be formed over a larger area. Although not shown, an elastic member such as rubber may be further provided on the shoulder portion 7e of the LED element substrate 7 (between the pressing portion 5) to provide a clamping structure via such an elastic member.

[0038] Additional LED element board Although not shown, an additional LED element substrate may be provided between the pair of LED element substrates 7 in front of the bottom plate 8, instead of or in addition to the bottom plate 8. The additional LED element substrate may be provided so that the light-emitting portions of the attached LED elements face the front direction 2A of the light-emitting display unit 2a (so that when the substrate itself is placed flat, the substrate surface faces the front direction 2A of the light-emitting display unit 2a). This can improve the luminous intensity of the light-emitting display unit 2a in the front direction 2A.

[0039] [Application example to tunnel disaster prevention equipment] 6 shows a fire hydrant device 11 of a fire hydrant facility for a tunnel. The indicator light 1 can be used as an indicator light for such a fire hydrant device 11.

[0040] The housing of the fire hydrant device 11 has a built-in fire hose and the like, and is installed beside the roadway (on an inspection road, etc.) with the front side facing the roadway. The indicator light 1 is attached to the front of the housing of the fire hydrant device 11 with the light-emitting indicator 2a facing directly toward the roadway in front and exposed to the outside.

[0041] Here, in the case of indicator lights provided on disaster prevention equipment installed on the side of the roadway in a tunnel, good visibility from vehicles traveling on the roadway is also required, i.e., good visibility from the left and right sides.

[0042] In the indicator lamp 1, the light reflecting portion 7aa can increase the luminous intensity of the light-emitting display portion 2a with a simple structure. Furthermore, as shown in the example, by arranging the pair of LED element substrates 7 as a left-right pair and tilting them left and right, it is possible to improve the luminous intensity to the left and right sides even if the light-emitting display portion 2a is thin, thereby improving visibility from the left and right sides. Furthermore, the light reflecting portion 7aa can increase the luminous intensity in both the front direction and the left and right sides, thereby improving visibility from both the front direction and the left and right sides.

[0043] [Configuration change example] The embodiments of the present invention have been described above with reference to FIGS. 1 to 6. However, the specific configuration is not limited to the above-described embodiments, and includes design modifications and the like within the scope of the gist of the present invention. [Explanation of symbols]

[0044] 1: Indicator light 2: Cover 2a: Light emitting display section 2A: Front direction 2X: Center axis 3: Main body 3a: Bottom wall 3b: Support part 4: Front panel 5: Pressing part 6: LED element 6a: Light emitting part 6A: Light trajectory 7: LED element substrate 7a: substrate surface 7aa: light reflecting portion 7b: Back side of board 7c: Through hole 7d: Locking hole 7e: Shoulder 8: Bottom plate 8a: Front surface 8c: Locking piece 9: Wiring 10: Terminal stand

Claims

1. The light-emitting display unit emits light from a light-emitting element as a light source, and indicates the location of the disaster prevention equipment. a pair of light-emitting element substrates spaced apart from each other on the left and right, with the substrate surfaces facing the direction of light emission of the light-emitting elements facing each other and inclined left and right toward the light-emitting display unit; An indicator light characterized in that a light reflecting portion is provided on the surface side of at least one of the pair of light-emitting element substrates, which reflects light from the light-emitting element emitted from the surface side of the other opposing substrate toward the light-emitting display portion, and the light-emitting element is arranged so that light on the optical axis is directed directly toward the light-emitting display portion.

2. An indicator light in which the light-emitting display unit emits light from a light-emitting element as a light source and indicates the location of disaster prevention equipment, a pair of light-emitting element substrates, the substrate surfaces of which face in the direction of light emission of the light-emitting elements and are arranged opposite to each other, and a light reflecting section is provided on at least one of the substrate surfaces, which reflects light emitted from the other opposing substrate surface toward the light-emitting display section; the light-emitting element is provided in a direction such that the optical axis is perpendicular to the surface of the light-emitting element substrate; An indicator light characterized in that the pair of light-emitting element substrates are spaced apart from each other so that the optical axis passes directly through the light-emitting display unit, and are arranged in a manner that is inclined from side to side so that the surface side of the substrates faces the light-emitting display unit.

3. An indicator light in which the light-emitting display unit emits light from a light-emitting element as a light source and indicates the location of disaster prevention equipment, a pair of light-emitting element substrates, the substrate surfaces of which face in the direction of light emission of the light-emitting elements and are arranged opposite to each other, and a light reflecting section is provided on at least one of the substrate surfaces, which reflects light emitted from the other opposing substrate surface toward the light-emitting display section; the light-emitting element is mounted on a rear surface side of the substrate opposite to the front surface side of the substrate, with a light-emitting portion exposed on the front surface side of the substrate through a through hole; An indicator light characterized in that the pair of light-emitting element substrates further have a light-reflecting layer on the front or back of the base material of at least one of the substrates, which guides light from the light-emitting element incident from the side of the through hole and emits it toward the light-emitting display unit from the front end of the substrate on the light-emitting display unit side.

4. An indicator light in which the light-emitting display unit emits light from a light-emitting element as a light source and indicates the location of disaster prevention equipment, a pair of light-emitting element substrates, the substrate surfaces of which face in the direction of light emission of the light-emitting elements and are arranged opposite to each other, and a light reflecting section is provided on at least one of the substrate surfaces, which reflects light emitted from the other opposing substrate surface toward the light-emitting display section; the light-emitting element is mounted on a rear surface side of the substrate opposite to the front surface side of the substrate, with a light-emitting portion exposed on the front surface side of the substrate through a through hole; An indicator light characterized in that the light reflecting portion also functions to guide light from the light-emitting element incident from the side of the through hole and emit it toward the light-emitting display portion from the front end of the substrate on the light-emitting display portion side.

5. the light-emitting element is mounted on a rear surface side of the substrate opposite to the front surface side of the substrate, with a light-emitting portion exposed on the front surface side of the substrate through a through hole; The indicator light according to claim 1, characterized in that a light-reflecting layer is further provided on the front or rear surface of the base material of at least one of the pair of light-emitting element substrates, which guides light from the light-emitting element incident from the side of the through hole and emits it toward the light-emitting display unit from the front end of the substrate on the light-emitting display unit side.

6. The light-emitting element is mounted on the back surface side of the substrate opposite to the front surface side of the substrate, with a light-emitting portion exposed on the front surface side of the substrate through a through hole, The indicator light according to claim 1, characterized in that the light reflecting portion also functions to guide light from the light-emitting element incident from the side of the through hole and emit it toward the light-emitting display portion from the front end of the substrate on the light-emitting display portion side.

Images