JP3895942B2 - Tunnel guide sign - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tunnel guide sign provided to indicate an evacuation exit or an emergency exit in a tunnel.
[0002]
[Prior art]
Conventionally, guidance signs incorporating a light source have been provided for the purpose of guiding to an evacuation exit or emergency exit in a tunnel. In general, this type of guide sign has a configuration in which a light source is provided in the instrument body, and a display panel that transmits at least part of light from the light source is attached to the front surface of the instrument body facing the road. The display panel is printed with graphics and characters representing display contents necessary for guidance, and further with white paint to diffuse the light from the light source and reduce unevenness in luminance. In other words, the conventional tunnel guide sign emits light from the light source only to the front side of the instrument body.
[0003]
[Problems to be solved by the invention]
By the way, in order to guide to an evacuation exit or emergency exit in a tunnel, it is desirable to be able to recognize the presence of a guide sign from a distance along the road. Conventionally provided guidance signs emit light from the light source only to the front side, as described above. Therefore, the presence of the guidance sign is not easily recognized unless it is close to the guidance sign. A relatively large amount of light is required for recognition. In addition, since a light source with a large amount of light or a plurality of light sources must be used in order to secure the amount of light, there is a problem that it leads to an increase in size and cost.
[0004]
The present invention has been made in view of the above-mentioned reasons, and the purpose of the present invention is to provide a guide sign for a tunnel that can reduce power consumption and can be reduced in size and cost while easily recognizing its existence from a distance. It is to provide.
[0005]
[Means for Solving the Problems]
The invention of claim 1 is an instrument main body in which a light source is accommodated and arranged in parallel with a road, and is attached to the front side facing the road in the instrument main body to transmit at least part of the light from the light source. A display panel for visually recognizing display contents, a position display window that is provided on at least one of both side walls of the instrument body in a direction along the road and that leaks light from the interior of the instrument body, and is disposed on the back side of the display panel A light guide plate that guides light from the light source to the display panel, and the light guide plate is disposed in such a manner that a rectangular emission surface faces the display panel, and is adjacent to the emission surface of the light guide plate. The light of the light source is introduced from two surfaces along the road among the surfaces, and two surfaces at both ends in the direction along the road are opposed to the position display window . According to this structure, since the position display part which emits light is provided in at least one of the both side walls of the instrument main body in the direction along the road, the presence of the identification mark can be recognized from a distance in the tunnel. In addition, since a part of the light from the light source used for illuminating the display panel is diverted inside the instrument body, the purpose can be achieved without increasing the number of parts by simply providing a position display window for leaking light from the instrument body. Can be achieved.
[0009]
According to a second aspect of the present invention , there is provided an instrument main body in which a light source is accommodated and arranged in parallel with a road, and the instrument main body is attached to the front side facing the road and transmits at least part of the light from the light source. A display panel for visually recognizing display contents, a position display window that is provided on at least one of both side walls of the instrument body in a direction along the road and that leaks light from the interior of the instrument body, and is disposed on the back side of the display panel the light from the light source and a light guide plate for guiding the display panel, the light guide plate is arranged in a manner to oppose the rectangular exit surface on the display panel, adjacent to the exit surface of the front Kishirube light plate 4 Two surfaces at both ends in the direction along the road among the two peripheral surfaces are opposed to the position display window, and light from the light source is introduced from the two surfaces facing the position display window. According to this structure, since the position display part which emits light is provided in at least one of the both side walls of the instrument main body in the direction along the road, the presence of the identification mark can be recognized from a distance in the tunnel. In addition, since a part of the light from the light source used for illuminating the display panel is diverted inside the instrument body, the purpose can be achieved without increasing the number of parts by simply providing a position display window for leaking light from the instrument body. Can be achieved.
[0012]
A third aspect of the invention is characterized in that, in the first or second aspect of the invention, the light source is a light emitting diode.
[0013]
According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the light source is a cold cathode tube.
[0014]
According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the position display unit includes a light amount variable unit that periodically changes the amount of light emitted from the position display unit using a movable optical element. It is added. According to this configuration, the amount of light for indicating the presence of the guide sign changes, so that it can be easily distinguished from other lights and the presence of the guide sign can be easily recognized.
[0015]
According to a sixth aspect of the present invention, in the first to fifth aspects of the invention, the direction in which the amount of light emitted from the display panel is maximized is at least one side in the direction along the road with respect to the front direction of the display panel. Directivity imparting means for setting by shifting the required angle is added. According to this configuration, by providing directivity (light intensity distribution) that shifts the direction in which the amount of light emitted from the display panel is maximized from the front direction of the display panel, It is possible to reduce the amount of light in the front direction of the display panel while securing a sufficient amount of light. In other words, if the visibility from a distant place is secured to the same level as the conventional product, it is possible to use a light source with a smaller amount of light than the conventional product, saving energy, and reducing the size by using a light source with a smaller amount of light. The cost of maintenance is reduced because light sources with low power consumption generally have a slower deterioration and longer life due to lower electrode temperature than light sources with higher power consumption. It also leads to.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
( Basic configuration )
In this example , as shown in FIGS. 1 to 3, a rectangular parallelepiped instrument body 1 is provided, and a display panel 3 is provided in a rectangular window hole 2 provided on one surface in the thickness direction of the instrument body 1 (hereinafter referred to as a front surface). Is installed. The appliance body 1 is fixed to the side wall W of the tunnel T so as to be parallel to the road. That is, the instrument body 1 is attached with the front side facing the road side in use, and in this example , the front surface of the instrument body 1 is formed in a rectangular shape whose dimension in the direction along the road is longer than the dimension in the vertical direction. Further, the size of the instrument body 1 in the front-rear direction (that is, the thickness direction) is relatively small, and the projecting dimension of the tunnel T from the wall surface W is small. The instrument body 1 is formed by joining a body 10 attached to a wall surface W and a cover 11 on the front side of the body 10 via a packing (not shown).
[0017]
As shown in FIG. 3, a plurality of (three in the illustrated example) light sources 4 made of straight tubular cold cathode tubes are attached to the body 10 in the direction along the road. Here, in order to prevent light from being emitted backward, a reflector 12 is provided for each light source 4 to reflect the light forward.
[0018]
The window hole 2 described above is opened in the front wall of the cover 11, and the display panel 3 is attached to the cover 11 from the back side of the front wall of the cover 11 at a portion corresponding to the window hole 2. The display panel 3 is a transparent synthetic resin plate or glass plate printed with a white paint for imparting display content and light diffusibility. For example, as shown in FIG. 1, arrows are shown in both directions along the road as the display contents, and the distance to the emergency exit and emergency exit in each direction indicated by the arrows (in the example shown, only unit “m”) Notation).
[0019]
Position display windows 6 for leaking light from the light source 4 to the outside of the instrument main body 1 are provided on each side wall of the instrument main body 1 in the direction along the road as upper and lower positions on each side wall. A transparent plate 6 a made of glass or synthetic resin is attached to the position display window 6 to prevent dust from entering the inside of the instrument body 1.
[0020]
By providing the position display window 6 in the instrument body 1, light reflected from the back surface of the display panel 3 and light not irradiated on the display panel 3 out of the light emitted from the light source 4 leaks from the position display window 6. Become. That is, light leaks from the inside of the instrument body 1 to the outside through the position display windows 6 provided on both side walls of the instrument body 1 in the direction along the road, and the presence of the guidance sign can be easily recognized from a distance along the road. Can do. In addition, since the light leaking from the position display window 6 is light that has not been used in the past, energy loss hardly occurs.
[0021]
By the way, in this example , the light distribution curve of the light emitted from the display panel 3 is configured to have a shape indicated by a two-dot chain line in FIG. That is, the directivity is given to the emitted light from the display panel 3 so that the intensity distribution in the direction along the road is as shown in FIG. It is set to be shifted from the front direction by a predetermined angle in the direction along the road (a range of 30 to 90 degrees is desirable in consideration of visibility in the tunnel). As directivity imparting means for imparting directivity, a directivity film 5 laminated on the back surface of the display panel 3 is used as shown in FIG. Similar to the Fresnel lens, the directional film 5 has a number of irregularities formed on the surface of the synthetic resin sheet. The directional film 5 imparts directivity to light incident from the light source 4 by appropriately designing the irregularity cross section. Let it emit. This type of directional film 5 may be called a prism sheet, a directional sheet, or the like.
[0022]
As described above, the directivity of the light emitted from the display panel 3 using the directivity film 5 is higher when the display panel 3 is viewed from the side or at an angle than when the display panel 3 is viewed from the front. It becomes brightness and, as a result, the visibility from a distance increases. In other words, if the visibility from a distance is about the same as the conventional one, the amount of light emitted in the front direction is reduced, and the light source 4 having a smaller light output than the conventional one is used. Can be used.
[0023]
In the above-described configuration , an example in which a cold cathode discharge lamp is used as the light source 4 is shown, but a light emitting diode may be used as the light source 4. When light emitting diodes are used for the light source 4, it is desirable to arrange a plurality of light emitting diodes. In the present invention, it is not essential to provide directivity to the light emitted from the display panel 3, and whether or not the directivity film 5 is provided may be appropriately selected as necessary. In addition, although an example using a directional film has been shown, in the case where a plurality of small light emitting elements such as light emitting diodes are used as a light source, directivity is imparted by adjusting the arrangement and orientation of the light emitting diodes. In addition, the directivity is not imparted to the transmitted light as in the case of the directional film, and the directivity may be imparted by a reflective element disposed on the opposite side of the display panel with respect to the light source. Is possible. Furthermore, in this example , the light intensity distribution on the front side of the display panel 3 is maximized on both sides of the front direction, but depending on the usage, the light intensity may be maximized only on one side. Good. Similarly, the position display window 6 can be provided only on one side, not on both sides of the instrument body 1.
[0024]
( First embodiment )
In the basic configuration , the configuration in which the light source 4 is disposed behind the display panel 3 is exemplified. However, in the present embodiment, as shown in FIG. 7, the two light sources 4 a and 4 b are used, and the light source is provided via the light guide plate 7. An example in which light from 4a and 4b is guided to the display panel 3 will be shown. The light guide plate 7 is formed of a transparent synthetic resin plate, and appropriate reflection dots are provided on the back surface side so that the intensity of light taken out from the exit surface, which is the front surface, is substantially uniform. The light guide plate 7 is formed in a rectangular plate shape, and the light sources 4a and 4b and the light guide plate 7 are arranged so as to introduce light from the light sources 4a and 4b into the upper and lower peripheral surfaces of the four peripheral surfaces. In this configuration, the right and left peripheral surfaces of the light guide plate 7 are disposed so as to face the position display window 6, and light leaked from the light guide plate 7 is emitted from the position display window 6 to the outside of the instrument body 1. It is. Therefore, the light emitted from the light sources 4a and 4b can be used without waste. Other configurations and operations are the same as the basic configuration .
[0025]
In the present embodiment, the light from the light sources 4a and 4b is introduced into the upper and lower peripheral surfaces of the light guide plate 7. However, the light from the light sources 4a and 4b can be introduced into the left and right peripheral surfaces of the light guide plate 7. In this case, the light leaking from the light sources 4a and 4b to the opposite side of the light guide plate 7 or the light reflected by the peripheral surface of the light guide plate 7 is emitted from the position display window 6 to the outside of the instrument body 1. become.
[0026]
( Reference example )
In this example , as shown in FIG. 8, a position indicator lamp 8 is provided in a portion corresponding to the position indicator window 6 in addition to the light source, and light from the position indicator lamp 8 passes through the position indicator window 6 and the instrument main body. 1 is radiated to the outside. In this configuration, the light emitted from the position display window 6 can be controlled separately from the light used for the illumination of the display panel 3, and is used for the amount of light emitted from the position display window 6 and the illumination of the display panel 3. The amount of light can be set appropriately. Further, if the position indicator lamp 8 is controlled to blink, it is easy to attract a person's attention and to recognize the presence of a guidance sign.
[0027]
The same effect can be expected even if the position indicator lamp 8 is attached to a portion corresponding to the position indicator window 6 without providing the position indicator window 6. Other configurations and operations are the same as those in the first and second embodiments.
[0028]
( Second Embodiment)
In the present embodiment, as shown in FIG. 9, a rotating light-shielding plate 9 as an optical element serving as a light quantity varying unit is arranged at a portion corresponding to the position display window 6. In the illustrated example, a configuration in which the flat rotating light shielding plate 9 is rotated around a rotation shaft 9 a parallel to the position display window 6 by an appropriate power source such as a motor is adopted. In this configuration, since the amount of light leaking from the position display window 6 outside of the instrument body 1 periodically varies with the rotation of the rotary light shielding plate 9, as in the case of flashing control the position indicator 8 in Reference Example, the light amount change It is easier to attract people's attention. Other configurations and operations are the same as the basic configuration . The configuration of the present embodiment can be applied to any of the configurations described above.
[0029]
【The invention's effect】
Claim 1, according to the configuration of the invention of claim 2, since the provided position display unit for emitting light to at least one of both side walls of the instrument body in a direction along the road, identified from the distance in the tunnel label Can be recognized.
[0031]
In addition, the luminance unevenness can be suppressed by the light guide plate. In addition, by using the light guide plate, it is possible to reduce the thickness dimension of the back side of the display panel while suppressing luminance unevenness, so that the protruding dimension from the wall surface becomes relatively small.
[0032]
Furthermore, since diverting part of the light from the light source used for the illumination of the display panel inside the vessel device main body, without almost increasing the number of components only by providing the position display window to leak light from the instrument body, object Can be achieved.
[0036]
According to the configuration of the invention of claim 3, since the light source is a light emitting diode, Ki out the life of the light source to reduce the frequency of replacement of the long light source, the cost of maintenance is reduced.
[0037]
According to the configuration of the invention of claim 4, since the light source is a cold cathode tube, it is possible to use a small diameter of the light source, relatively small protruding dimension from the wall of the tunnel.
[0038]
According to the configuration of the invention according to claim 5, in the position display unit, the amount of light emitted from the position display unit, since the amount of light variable means for periodically changed using an optical element that moves is added, induced By changing the amount of light for indicating the presence of the guide sign, it becomes easy to distinguish from other lights, and it becomes easy to recognize the presence of the guide sign.
[0039]
According to the configuration of the invention of claim 6, oriented amount of light emitted from Viewing panel the direction of maximum, set by shifting required angle at least on one side in the direction along the road with respect to the front direction of Viewing panel sex application means have been added Runode by providing viewing directivity that shifts from the front direction of the display panel in a direction emission light intensity becomes the maximum from the panel (light amount intensity distribution), the visibility from the far While securing a sufficient amount of light in the required direction, the amount of light in the front direction of the display panel can be reduced. In other words, if the visibility from a distant place is secured to the same level as the conventional product, it is possible to use a light source with a smaller amount of light than the conventional product, saving energy, and reducing the size by using a light source with a smaller amount of light. The cost of maintenance is reduced because light sources with low power consumption generally have a slower deterioration and longer life due to lower electrode temperature than light sources with higher power consumption. It also leads to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a basic configuration .
FIG. 2 is a perspective view of the main part of the above.
FIG. 3 is a cross-sectional view of the above.
FIG. 4 is an operation explanatory view of the above.
FIG. 5 is an explanatory view showing characteristics of a directional film used in the above.
FIG. 6 is a perspective view showing the arrangement of the display panel and the directional film used in the above.
FIG. 7 is a perspective view of a principal part, partly broken, showing the first embodiment of the present invention.
FIG. 8 is a perspective view of a principal part, partially broken away, showing a reference example .
FIG. 9 is a cross-sectional view of a main part showing a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument body 3 Display panel 4 Light source 4a, 4b Light source 5 Directional film 6 Position display window 6a Transparent plate 7 Light guide plate 8 Position indicator lamp 9 Rotation light shielding plate

Claims (6)

An instrument main body in which a light source is stored and arranged in parallel with the road, and a display panel that is attached to the front side facing the road in the instrument main body and allows at least part of the light from the light source to pass therethrough so as to visually recognize display contents And a position display window provided on at least one of both side walls of the instrument body in the direction along the road and leaking light from the interior of the instrument body, and the light from the light source disposed on the back side of the display panel A light guide plate that leads to the display panel, the light guide plate being disposed in a form in which a rectangular emission surface faces the display panel, and a direction along a road among four peripheral surfaces adjacent to the emission surface of the light guide plate A guide sign for tunnel, wherein light from the light source is introduced from two surfaces of the light source and two surfaces at both ends in a direction along the road are opposed to the position display window . An instrument main body in which a light source is stored and arranged in parallel with the road, and a display panel that is attached to the front side facing the road in the instrument main body and allows at least part of the light from the light source to pass therethrough so as to visually recognize display contents And a position display window provided on at least one of both side walls of the instrument body in the direction along the road and leaking light from the interior of the instrument body, and the light from the light source disposed on the back side of the display panel A light guide plate that leads to the display panel, the light guide plate being disposed in a form in which a rectangular emission surface faces the display panel, and a direction along a road among four peripheral surfaces adjacent to the emission surface of the light guide plate A guide sign for tunnel , wherein two surfaces at both ends of the light source are opposed to the position display window, and light from the light source is introduced from the two surfaces facing the position display window . 3. The tunnel guide sign according to claim 1, wherein the light source is a light emitting diode . 3. The tunnel guide sign according to claim 1, wherein the light source is a cold cathode tube . 5. The light amount variable means for changing the light amount of the light emitted from the position display unit periodically using a movable optical element is added to the position display unit . Tunnel guidance sign. Directivity imparting means is provided for setting a direction in which the amount of light emitted from the display panel is maximized by shifting a required angle to at least one side in a direction along the road with respect to the front direction of the display panel. tunnel for induction-labeled according to any one of claims 1 to 5 and.

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