JP4983115B2 - Induction display device - Google Patents

Description

  The present invention relates to a guidance display device installed in a tunnel.

  Conventionally, in a tunnel such as a road, in the event of an emergency such as an accident or a fire, a guidance display device is provided at predetermined intervals along the road to quickly and safely guide people or vehicles to the tunnel exit or emergency exit. Is provided. This guidance display device generally has a display panel provided in front of the appliance body, that is, facing the road, and a lamp as a light source provided in the appliance body, and this lamp irradiates the display panel. Thus, the characters printed on the display panel are displayed. Further, in this type of guidance display device, the light distribution of the guidance display device is controlled so that the light distribution at a substantially intermediate position with the neighboring guidance display device is equal to or greater than a predetermined candela (cd). The presence of the guidance display device is easily visible from a distance (see, for example, Patent Document 1).

By the way, in recent years, a light source using a light emitting diode instead of a lamp has been put into practical use in order to extend the life of the light source, reduce maintenance costs, and reduce the thickness of the apparatus. However, when the light emitting diode is used as a light source, there is a problem that luminance in a direction along the road (longitudinal direction of the road) is insufficient and it is difficult to visually recognize the presence of the guidance display device from a distance. Therefore, in order to solve this problem, a display window that leaks light from the light source is provided on at least one of both side walls of the appliance body to improve visibility from the road longitudinal direction (for example, patents). Reference 1 and 2).
Japanese Patent Laid-Open No. 2002-294641 JP 2002-302915 A JP 2002-302916 A

By the way, the guidance display device includes a direct attachment type that is installed by directly attaching the instrument body to the wall surface of the tunnel, and an embedded type that is installed by being embedded in the wall surface of the tunnel. However, when the guide display device having display windows on both side walls of the instrument body is embedded, there is a problem that the display window is buried in the wall surface of the tunnel. Even if it exists, since the light from a display window will be shielded if the shielding object is installed in the both sides of the guidance display apparatus, there exists a problem that an object cannot be arrange | positioned on both sides of a guidance display apparatus.
The present invention has been made in view of the above-described circumstances, and provides a guidance display device that can be configured in either a direct attachment type or an embedded type while ensuring visibility from the longitudinal direction of a road. Objective.

In order to achieve the above-mentioned object, the present invention includes a light source built in an instrument body that is arranged with a rear surface facing a wall surface parallel to a road in a tunnel, and is provided on a front surface of the instrument body facing the road. In a guidance display device that performs guidance display by irradiating the light of the light source on the display panel, a position display section that emits light in the longitudinal direction of the road is provided on the front surface of the instrument body, and the position display section is provided on the instrument panel. Provided on both sides of the longitudinal direction of the front surface of the main body with the display panel sandwiched therebetween , and radiates light from each position display section across the display panel in the longitudinal direction of the road and traveling far in the longitudinal direction of the road It is characterized by doing.

  According to the present invention, in the above invention, a front frame having a panel display window that is opened in a substantially rectangular shape and exposes the display panel is provided on the front surface of the instrument body, and is provided on each of the inner edge portions on both sides of the front frame. The position display unit is provided.

  Moreover, the present invention is characterized in that, in the above-mentioned invention, the position display section emits light in a strip shape extending in a height direction of the instrument body.

  According to the present invention, the position display units that emit light in the longitudinal direction of the road are provided on both the left and right sides of the display panel, and each position display unit emits light in a direction that crosses the front of the display panel. Therefore, even when the instrument body is installed in the tunnel wall, the emitted light from the position indicator crosses the front of the display panel and reaches far away in the longitudinal direction of the road. It becomes possible to see from a long distance.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing the configuration of the guidance display device 1 according to the present embodiment, and FIG. 2 is a diagram showing the front, plane, bottom, and right side of the guidance display device 1 together. As shown in FIGS. 1 and 2, the guidance display device 1 has a rectangular parallelepiped instrument body 2 extending laterally, and a display panel 3 is disposed on the front surface of the instrument body 2. In addition, position display portions 4 are provided on both sides of the front surface of the instrument main body 2 with the display panel 3 interposed therebetween, as indicated by arrows D1 and D2 in the drawing. Light is emitted toward the far side of the road longitudinal direction (traffic direction) A across the front of the display panel 3. The configuration of each position display unit 4 will be described in detail later.

The appliance body 2 is installed on the wall surface of the tunnel along the road longitudinal direction A with the back side facing the wall surface side B of the tunnel such as a road and the display panel 3 facing the road side C. When the guidance display device 1 is directly attached to the wall surface of the tunnel, two elongated plate-like mounting brackets 5 extending up and down of the instrument body 2 are fixed to the back surface, and both end portions 5A of each mounting bracket 5 are attached. 5B is fixed to the wall surface of the tunnel by screws and the like.
Moreover, since the position display unit 4 is provided on the front surface of the instrument body 2 as described above, the position display unit 4 is buried in the wall surface even if the guidance display device 1 is installed in the wall surface of the tunnel. The guidance display device 1 can be installed as an embedded type.

Next, the configuration of the guidance display device 1 will be described in more detail.
3 is a view of the longitudinal section of the guidance display device 1 shown by the line XX ′ in FIG. 2, FIG. 3A is a view showing the entire longitudinal section, and FIG. It is a figure which expands and shows the principal part A of A). 4 is a diagram showing a cross section of the guidance display device 1 indicated by the YY ′ line in FIG. 2, FIG. 4A is a diagram showing the entire cross section, and FIG. 4B is a diagram. It is a figure which expands and shows the principal part B of 4 (A).

  As shown in FIGS. 1 to 4, the instrument body 2 is formed in a box shape with an open front side, and a front frame 7 with a panel display window 6 opened in a substantially rectangular shape is provided in the opening on the front side. . The front frame 7 is connected to the instrument body 2 using a plurality of hinges 8 provided on the upper surface 2A of the instrument body 2 so as to be openable and closable, and a plurality of snap locks provided on the lower surface 2B of the instrument body 2. 9 is locked so that it cannot be opened and closed.

As shown in FIGS. 3 and 4, a packing 11 is disposed on the front side of the display panel 3 on the inner side of the front frame 7 and on the edge of the panel display window 6. The enclosure body 2 is waterproofed by enclosing all sides.
The display panel 3 is formed of a translucent member such as tempered glass, for example, and a graphic and characters representing display contents necessary for guidance are printed or a transparent color film is pasted on the back surface thereof.

  On the other hand, the appliance main body 2 includes a light guide plate 20 disposed so as to be in close contact with the back side of the display panel 3, and LED light sources for display panels disposed opposite to the upper and lower ends 20A and 20B of the light guide plate 20, respectively. Part 21. The LED light source unit 21 for display panel includes a circuit board 22 extending along the upper end 20A or the lower end 20B of the light guide plate 20, a plurality of bullet-type LEDs 23 mounted on the circuit board 22, and the LEDs 23. The light guide plate 20 includes a support frame 24 that is disposed opposite to the upper end portion 20A or the lower end portion 20B. A reflection surface that reflects light is formed on the back side of the light guide plate 20. Thereby, the light of each LED 23 is guided into the light guide plate 20 from the upper and lower end portions 20A and 20B of the light guide plate 20 and emitted toward the display panel 3, and is printed on the display panel 3 or by applying a transparent color film. Characters, figures, etc. will be displayed.

  Next, the configuration of the position display units 4 on the left and right ends of the display panel 3 will be described in detail. As shown in FIG. 4, the position display unit 4 is disposed on the back side of the left and right ends of the display panel 3 and emits light toward the front of the display panel 3. A prism 31 is provided on the front side of the panel 3 along the left and right inner edges 7A of the front frame 7 and is an optical element that changes the traveling direction of the light of the position indicating LED light source 30 to the road longitudinal direction A. ing.

The position indicating LED light source unit 30 includes a circuit board 32 extending along the left and right inner edges 7A of the front frame 7, a plurality of bullet-type LEDs 33 arranged on the circuit board 32, and the circuit board 32. And a support frame 34 for supporting the structure.
The left and right end portions 3A and 3B of the display panel 3 extend until they cover the front surface of the position indicating LED light source unit 30, and the prism 31 is disposed on the front side of the left and right end portions 3A and 3B of the display panel 3. Is arranged, and the prism 31 is covered with the cover body 36.

  A plurality of radiation windows 37 are formed in the cover body 36, and the radiated light of the position indicating LED light source section 30 passes through the display panel 3 to the prism 31 as indicated by an arrow P in FIG. Incident light is emitted from the radiation window 37 with the prism 31 changing the traveling direction to the longitudinal direction A of the road crossing the display panel 3.

Thereby, since light is radiated | emitted from the position display part 4 toward the road longitudinal direction A, presence of the guidance display apparatus 1 can fully be visually recognized even from a distant place. Further, since light is emitted from the position display unit 4 so as to cross the front of the display panel 3, the luminance of the display panel 3 is supplemented by the emitted light.
Further, a plurality of bullet-type LEDs 33 of the position display LED light source section 30 are arranged along the left and right inner edges 7A of the front frame 7, and the position display section 4 emits light in a band shape along the left and right inner edges 7A. Even if there is a shielding object near the device 1, a part of the radiated light (for example, light at the upper end or the lower end) radiated from the position display unit 4 to the shielding object is likely to leak, so that it is visible from a distance. Makes sex difficult to inhibit.

Here, the traveling direction P of the radiated light of the prism 31 is inclined by an angle θ with respect to the vertical plane (a plane substantially parallel to the display panel 3). The lower limit value of the angle θ is set to a value such that the light emitted from the radiation window 37 of the cover body 36 is not shielded (does not collide) by the cover body 36 provided on the opposite side across the display panel 3. ing.
Further, when there are shielding objects on the left and right of the guidance display device 1, the angle θ is set to such a value that the radiation light from the radiation window 37 is not shielded by these objects. In this embodiment, since the radiation direction of the radiated light from the radiation window 37 is controlled by the prism 31, the light radiation direction of the position display unit 4 can be easily changed by appropriately changing the prism 31. Is possible.
Further, as shown in FIG. 4B, by arranging the prism 31 in close contact with the radiation window 37 of the cover body 36, the surface of the prism 31 can be easily cleaned with exhaust gas or dust of the vehicle. ing.

As described above, according to the present embodiment, the position display units 4 that emit light in the road longitudinal direction A are provided on both sides of the display panel 3, and each position display unit 4 crosses the front of the display panel 3. Since the configuration is such that the light is emitted in the direction of the light, the radiated light of the position display unit 4 crosses the front of the display panel 3 far in the road longitudinal direction A even when the instrument body 2 is embedded in the wall of the tunnel. Therefore, the presence of the guidance display device 1 can be sufficiently visually recognized from a distance in the road longitudinal direction A.
Furthermore, by allowing the radiated light from the position display unit 4 to cross the front of the display panel 3, the luminance of the display panel 3 can be supplemented by the radiated light, and the display visibility of the display panel 3 can be improved.

  In addition, according to the present embodiment, the position display unit 4 is provided on each of the inner edges 7A on both sides of the front frame 7, so that the position display unit 4 does not protrude to the front side of the instrument body 2 and the guidance display device. The thickness of 1 can be suppressed.

  In addition, according to the present embodiment, since the position display unit 4 extends in a band shape in the height direction of the instrument body 2 and emits light, even if there is a shield near the guidance display device 1, the position display is displayed on the shield. Part of the radiated light radiated from the portion 4 in a band shape (for example, light at the upper end or lower end) is likely to leak, and visibility from a distance can be prevented from being hindered.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.
For example, in the above-described embodiment, the position display unit 4 is provided with the prism 31 that is one mode of the transmissive optical element as the optical element that directs the light traveling direction of the position-displaying LED light source unit 30 in the road longitudinal direction A. 31 is configured to control the traveling direction of the radiated light of the position display unit 4. However, the configuration is not limited thereto, and a configuration in which a reflective optical element such as a reflecting mirror is used for controlling the traveling direction of the radiated light instead of the prism 31. It is also good. In this configuration, it is desirable that the cover body 36 that covers the reflective optical element is configured to be detachable from the front frame 7 so that the reflective surface of the reflective optical element can be easily cleaned.
Further, an optical element (for example, prism 31) for controlling the traveling direction of the radiated light of the position display unit 4 is provided so as to be rotatable about an axis along the inner edge 7A of the front frame 7, and the light of the position display unit 4 is provided. It is good also as a structure which can adjust a radiation direction easily.

  Further, for example, in the above-described embodiment, the position display unit 4 is provided on the left and right inner edges 7A of the front frame 7, but the present invention is not limited thereto. That is, if the position display units 4 are provided on both sides of the display panel 3 and each position display unit 4 emits light in a direction crossing the front of the display panel 3, the position display unit 4 at an arbitrary position is used. Can be arranged. For example, as shown in FIG. 5, the position display unit 4A may be provided on the left and right frame surfaces of the front frame 7 to configure the guidance display device 1A. Further, for example, as shown in FIG. 6, a position display illumination device 50 in which the position display unit 4 </ b> B is incorporated may be provided on each of the left and right sides of the instrument body 2.

In addition, for example, in the above-described embodiment, in addition to the position display unit 4, a configuration in which the front of the display panel 3 is traversed to emit light in a direction directly below the instrument main body 2 to illuminate the road surface and / or the display panel 3 A configuration in which light is emitted in a direction directly above the appliance main body 2 so as to illuminate the upper part of the wall surface of the tunnel may be added to the guidance display device 1.
The guidance display device 1 of the present invention is preferably installed on the wall surface of the tunnel, but may be used as the guidance display device 1 for evacuation guidance for buildings or the like.
Further, in the above-described embodiment, the configuration using the bullet-type LED 33 for the position display unit 4 is illustrated, but the configuration is not limited thereto, and a configuration using a package-type LED mounted on the circuit board 22 may be used.

It is a perspective view which shows the structure of the induction | guidance | derivation display apparatus which concerns on embodiment of this invention. It is a figure which shows all the front, a plane, a bottom face, and a right side of an induction | guidance | derivation display apparatus. It is a figure which shows the longitudinal cross-section of an induction | guidance | derivation display apparatus, (A) is a figure which shows the whole longitudinal cross-section, (B) is a figure which expands and shows a part. It is a figure which shows the cross section of an induction | guidance | derivation display apparatus, (A) is a figure which shows the whole cross section, (B) is the figure which expands and shows a part. It is a perspective view which shows the other aspect of an induction | guidance | derivation display apparatus. It is a perspective view which shows the other aspect of an induction | guidance | derivation display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1A, 1B Guidance display apparatus 2 Instrument main body 3 Display panel 4, 4A, 4B Position display part 6 Panel display window 7 Front frame 7A Inner edge 30 LED light source part for position display 31 Prism 50 Illumination apparatus for position display

Claims (3)

A light source is built in the instrument body that is arranged with the back side facing the wall parallel to the road in the tunnel, and the display panel provided on the front surface of the instrument body facing the road is irradiated with the light of the light source. In a guidance display device for guidance display,
A position display unit that emits light in the longitudinal direction of the road has a front surface of the instrument body ,
The position display unit is provided on both sides of the longitudinal direction of the front surface of the appliance body with the display panel interposed therebetween , and the longitudinal direction of the road crosses the display panel from the position display unit in the longitudinal direction of the road. An inductive display device that emits light that travels farther away . The guidance display device according to claim 1,
A front frame formed with a panel display window that opens in a substantially rectangular shape and exposes the display panel is provided on the front surface of the instrument body, and the position display unit is provided on each of the inner edge portions on both sides of the front frame. A characteristic guidance display device. The guidance display device according to claim 1 or 2,
The position display unit emits light by extending in a strip shape in the height direction of the instrument body.

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