JP4112671B2 - Information display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information display device, and more particularly to an information display device that is installed on a road or the like and displays various types of information.
[0002]
[Prior art]
In general, on a road such as a highway or a tunnel, a guidance sign 61 as shown in FIG. 6 is provided, and information such as a route by an arrow symbol, a point name and a distance of a preceding road, etc. is provided to a passenger of a traveling vehicle, for example, a driver. providing.
However, even if an accident, fire, road breakage, etc. occurs on the preceding road, or even if the road is closed, the guide sign is displayed as if it is an arrow symbol, and appropriate information for the driver is displayed. In some cases, it could not be provided.
[0003]
For this purpose, a variable display device 62 such as a variable sign or a road information board that can change the display information in accordance with the situation of the preceding road is provided to provide information such as road closures.
Therefore, in the case of FIG. 6, a fixed display guide sign 61 and a variable display device 62 are provided in the highway tunnel.
For example, when an accident occurs in the preceding tunnel, the variable display device 62 gives an instruction to the fact that the accident has occurred and to exit the expressway at the exit immediately before the accident.
[0004]
As another method, as shown in FIG. 7, in the Tokyo Metropolitan Expressway, etc., if the arrow part of the information sign is completely filled with LEDs on the graphic information board, red is displayed when an accident is closed. By causing the LED to emit light and displaying a red X mark on the arrow that has been closed, an accident or a closed road is displayed.
[0005]
[Problems to be solved by the invention]
However, in such a conventional information display device, when the former variable display device is used, these devices are relatively expensive and take up a large installation space. There was a problem that the installation of was difficult.
In addition, when the latter graphic display board is used, when the LED is not emitting light, the arrow portion is black, which is different from the white color of the arrow portion of the guide sign defined by the sign marking instruction, and the road shape There is a disadvantage that the mounting structure of the LED is complicated and expensive because it is necessary to mount the LED together.
[0006]
Therefore, in the guide sign 61 shown in FIG. 6, if a white arrow defined by the sign indication instruction can blink the red arrow when an accident occurs and the red arrow can be lit when closed, Can solve the problem.
As a method for performing the red arrow display, it is conceivable to embed the LED of the arrow portion of the graphic information board (see FIG. 7) in the guide sign board.
[0007]
However, this method has a problem because the shape of the LED is large, and when the LED is not emitting light, the LED appears black and displays a cross.
The present invention is intended to solve such problems, and provides an information display device that maintains the function of a guide sign defined by a sign indication instruction and that can clearly display a preceding road condition to a driver. Is.
[0008]
[Means for Solving the Problems]
To achieve the above object, the present invention is an information display device of an internally illuminated using a light diffusing light guide member, horizontally and vertically on a first display symbol, which is formed on the light diffusing light guide member are arranged in a matrix, a plurality of micro holes penetrating in the thickness direction of the light diffusing light guide member, disposed respectively inserted into these small holes, any label pattern at point spelled during light emission, the such as letters or symbols A plurality of LEDs that superimpose and display the two display symbols on the first display symbol, and the diameter of each minute hole is set to a size that is not visible to the occupant of the traveling vehicle when each LED does not emit light. is there.
[0009]
Further, in a reflective information display device using a light reflecting member, a plurality of microscopic elements arranged in a vertical and horizontal matrix on the first display pattern formed on the light reflecting member and penetrating in the thickness direction of the light reflecting member. And a plurality of LEDs that are inserted and arranged in the micro holes and that display a second display design such as an arbitrary sign design, a character, or a symbol superimposed on the first display design in a stapling manner when emitting light. The diameter of each minute hole is set to a size that is not visually recognized by the occupant of the traveling vehicle when each LED does not emit light.
[0010]
Further, a light guiding member, the information display device of the internal irradiation type comprising a disposed light diffusing light guide member on the back surface, vertical and horizontal matrix on a first display symbol formed on the light guiding member A plurality of minute holes penetrating in the thickness direction of the light diffusive light guide member, and inserted into these minute holes, respectively, and second signs such as arbitrary sign designs, characters or symbols, etc. by dot-stitching at the time of light emission And a plurality of LEDs that are displayed in a superimposed manner on the first display symbol, and the diameter of each minute hole is set to a size that is not visible to the occupant of the traveling vehicle when each LED does not emit light. .
[0011]
Specifically, the diameter of the minute hole is 3 to 5 mm.
Therefore, in each of these information display devices, an arbitrary second display symbol is visually recognized by the occupant of the traveling vehicle in a dotted manner by superimposing it on the fixed first display symbol only at the time of LED light emission.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing the configuration of the information display device according to the first embodiment of the present invention, and in particular, an internally illuminated guide sign is shown as an example.
In the same figure, (a) is an external configuration (front and side surfaces), (b) is a front view of the main part, (c) is a BB 'cross-sectional view of the main part, and (d) is another configuration example. It is BB 'sectional drawing.
[0013]
As shown in FIG. 1A, the internally-illuminated guide signs are formed with a display design such as a sign design, characters, symbols, and the like by a colored light diffusing translucent plate 11 disposed on the front surface.
And it forms in the plate-shaped or sheet-like light diffusable translucent board 11 by permeation | transmission of the light 13 from light sources 12, such as a fluorescent lamp arrange | positioned in the back surface, or the reflection of the light 14 from the front surface. A display design (first display design) such as a sign design, a character, and a symbol is displayed to an occupant of the traveling vehicle, for example, a driver.
[0014]
Hereinafter, a case where a red X mark is displayed in the A portion (white arrow region) of FIG. 1A in such an internally illuminated guide sign will be described in detail.
FIG. 1B is an enlarged front view of a portion A in FIG. 1A, and the light diffusing translucent plate 11 is colored white in the area of the arrow portion.
In this white area, red LEDs 15 are arranged in a matrix of vertical and horizontal directions. By selecting and lighting a predetermined LED, a display pattern such as an arbitrary sign symbol such as a cross mark or a character or a symbol is displayed. (Second display symbol) is displayed.
[0015]
As shown in FIG. 1C, the LED 15 is inserted and arranged from the back side into a micro hole 18 provided through the light diffusing translucent plate 11, and power is supplied from the wiring 17 on the back side. The
Thereby, as shown in FIG. 1B, for example, the LED 15A (black circle) is turned on and the LED 15B (white circle) is turned off, so that the output light 16 is output forward from the LED 15A, and the light diffusing translucent plate 11 The X mark is displayed through the transparent plate 11B arranged on the front surface.
[0016]
The transparent plate 11B is for waterproofing so that rainwater does not affect the electric circuit such as the electrode of the LED 15 and the wiring 17 through the minute hole 18.
Further, the diameter of the minute hole 18 is such that the LED 15 can be inserted, and when the light is emitted, the X mark can be sufficiently visually recognized by dot stitching, and when the light is not emitted, the diameter cannot be visually recognized by the driver.
[0017]
A general LED has a diameter (outside dimension) of about 1.5 mm to 7.5 mm, but considering a light output, a diameter of about 3 to 5 mm is suitable, and the light output is one red LED. Therefore, it is in a situation where a maximum of about 2 cd can be manufactured.
In addition, the luminous intensity required for the driver to visually recognize while traveling is 150 m away when a light bulb with a 30 mm pitch, a diameter of 20 mm, and a 1.5 cd luminous intensity is used in the road information board described above. The point spelling display is fully visible from the point.
[0018]
Accordingly, the diameter of the LED may appear larger than the actual size due to the phenomenon of light bleeding during light emission, and the light emission output of an LED having a diameter of 3 to 5 mm is sufficient.
In addition, it has been confirmed that the dotted display can be sufficiently visually recognized in the visual experiment.
[0019]
On the other hand, for the LED 15B that does not emit light, since the micro holes 18 are arranged particularly in the white region, the surrounding light diffusing translucent plate 11 is brighter, and the micro holes 18 are difficult to be visually recognized due to light blurring. Become.
Further, the angle that the driver visually recognizes while traveling, that is, the upper visual recognition limit angle is said to be 7 °.
Therefore, if the height position of the general sign board is 6 m and the height of the driver's eye is 1.2 m, the minimum distance L for visually recognizing this sign can be obtained by the following equation.
[0020]
L = tan ⁻¹ (7 °) × (6-1.2)
≒ 39m
Actually, it is impossible to visually recognize a 3-5 mm minute spot that does not emit light from a point 39 m in front of the sign board from the viewpoint of the driver's eyesight.
For example, the size h that a human with a visual acuity of 1.0 can distinguish from a position 39 m away can be obtained from the Landolt ring by the following equation.
[0021]
h = tan (1/60) × 39m
≒ 1.1cm
And about 4 times 3 mm is required.
Therefore, when the LED is not emitting light, the x mark is not visually recognized.
In addition, it was confirmed by experiment that when LED is not light-emitting, x mark cannot be visually recognized.
[0022]
Furthermore, as shown in FIG. 1 (b), since the LEDs 15 are arranged not only in the X-marked part but also in a vertical and horizontal matrix, the distance is close to the distance at which the driver can visually recognize the 3 mm minute hole, and the upper visual recognition limit angle is exceeded. Even if this sign is forcibly viewed, only the micro holes are visually recognized in the form of a vertical and horizontal matrix, and the X mark is not visually recognized.
Therefore, the diameter of the minute hole 18 may be set to 3 to 5 mm similarly to the LED 15.
[0023]
In FIG. 1C, since the light 13 from the light source 12 passes through the microhole 18 and the transparent resin portion of the LED 15 and is output forward, the presence of the microhole 18 due to the light blurring phenomenon caused by the light 13. May be visually recognized.
[0024]
In this case, as shown in FIG. 1 (d), a minute cylindrical light diffusing light-transmitting plate 19 having a hole through which the electrode of the LED 15 passes may be provided at the rear of the LED 15.
Thereby, the light 13 from the light source 12 is diffused by the light diffusing translucent plate 19 and is not directly output forward, and the presence of the minute hole 18 is not visually recognized due to the light blurring phenomenon caused by the light 13.
[0025]
Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 2 is an explanatory view showing an information display device according to the second embodiment of the present invention, and relates to an internally illuminated guide sign as in the first embodiment.
2A is a front view of the main part, and FIG. 2B is a cross-sectional view taken along the line BB ′ of the main part, and the same or equivalent parts as those in FIG.
[0026]
As shown in FIG. 2B, the micro hole 21 is provided in a range that does not penetrate the light diffusable light transmitting plate 11 from the back surface of the light diffusable light transmitting plate 11.
When the LED 15 inserted in the minute hole 21 is caused to emit light, the output light 16 is diffused by the light diffusing translucent plate 11 and outputted forward.
[0027]
Here, since the output light 16 is diffused by the light diffusing transparent plate 11, the light flux of the output light 16 increases near the LED 15, and the light flux of the output light 16 decreases as it moves away from the LED 15. As shown in (a), a cross with a wavy outline is displayed.
Therefore, according to this method, the light 13 from the rear light source 12 is diffused by the light diffusing translucent plate 11, so that it is not directly output to the front, and the minute hole 21 is caused by the light bleed phenomenon caused by the light 13. The presence of is no longer visible.
[0028]
Next, a third embodiment of the present invention will be described with reference to FIG.
FIG. 3 is an explanatory view showing an information display device according to the third embodiment of the present invention, and relates to an internally-illuminated guide sign as in the second embodiment.
3, (a) is a front view of the main part, and (b) is a BB ′ cross-sectional view of the main part, and the same or equivalent parts as those in FIG.
[0029]
In this example, as shown to Fig.3 (a), the thin light shielding foil 31 which reflects without passing light is arrange | positioned around LED15 which makes x mark display (inside the light diffusable translucent board 11).
According to this method, the output light 16 from the LED 15 is transmitted through the light diffusing transparent plate 11 while diffusing and reaches the light shielding foil 31.
[0030]
Here, the output light 16 is reflected by the light shielding foil 31, and the luminous flux is averaged in the area surrounded by the light shielding foil 31, so that the entire area surrounded by the light shielding foil 31 is visually recognized as an X mark display. .
Similarly, when the LED 15 is not emitting light, the light 13 from the rear light source 12 is reflected by the light-shielding foil 31, so that the presence of the light-shielding foil 31 is not visually recognized from the front, and the X mark display is also performed. It is not visually recognized.
[0031]
The first to third embodiments described above are not limited to the internally illuminated information display device shown in FIG.
For example, the present invention can be applied to an internally illuminated information display device as shown in FIG.
FIG. 4 is an explanatory view showing another internal display type information display device (front and side surfaces).
[0032]
In the figure, reference numeral 41 denotes a light diffusing light guide plate that guides light 43 from a light source 42 such as a fluorescent lamp disposed on a side surface by internal reflection.
A colored plate-like or sheet-like transparent material 41A is provided on the front surface of the light-diffusing light guide plate 41, and the light 43 guided by the light-diffusing light guide plate 41 is the colored transparent material. The sign symbol and the like formed on 41A is transmitted from the back surface and displayed on the driver.
[0033]
Therefore, although description here is omitted, for example, in the same manner as the light diffusable light transmitting plate 11 of FIG. 1, a micro hole is formed in the light diffusable light guide plate 41, and an LED is inserted and disposed in the micro hole. As a result, the first to third embodiments described above can be applied, and similar effects can be obtained.
In addition, when applying to 3rd Embodiment, the light source 42 should just be arrange | positioned around the light diffusable light-guide plate 41 so that the light 43 from the light source 42 may not be interrupted | blocked by the light shielding foil 31, for example.
[0034]
Next, a fourth embodiment of the present invention will be described with reference to FIG.
FIG. 5 is an explanatory view showing an information display device according to the fourth embodiment of the present invention, and in particular, a reflective guide sign is shown as an example.
In the same figure, (a) is an external configuration (front surface and side surface), (b) is a front view of the main part, and (c) is a cross-sectional view taken along line AA ′ of the main part.
[0035]
In FIG. 5, the reflective guide sign is a display of sign symbols, characters, symbols, and the like by a colored plate-like or sheet-like light reflecting sheet 51 A attached to a reflecting plate 51 such as aluminum which is a structural member. A pattern is formed.
Then, the light 53 from the light source (fluorescent lamp) 52 in front of the surface is reflected by the reflecting plate 51, so that display symbols, characters, symbols, and other display symbols formed on the light reflecting sheet 51A are directed toward the driver. Visually displayed.
[0036]
Hereinafter, in the case of such a reflective guide sign, a case where a red X mark is displayed in a portion A (white arrow region) in FIG. 5A will be described in detail.
FIG. 5B is an enlarged front view of the portion A in FIG. 5A, and the light reflecting sheet 51A is colored white in the area of the arrow portion.
In this white area, red LEDs 55 are arranged in a vertical and horizontal matrix form, and by selecting and lighting a predetermined LED, arbitrary characters and symbols such as a cross mark are displayed by dot-stitching.
[0037]
As shown in FIG. 5 (c), the LED 55 is inserted and arranged from the back side into a minute hole 58 provided through the reflecting plate 51 and the light reflecting sheet 51A, and the back side wiring 57B and the printed wiring board. Power is supplied through a 57A pattern (not shown).
Accordingly, for example, as shown in FIG. 5B, the LED 55A (black circle) is turned on and the LED 55B (white circle) is turned off, so that the output light 56 is output forward from the LED 55A and a cross is displayed.
[0038]
A case 54 that houses the printed wiring board 57 </ b> A and the rear portion of the LED 55 is attached to the reflection plate 51 with an attachment screw 59.
Further, inside the case 54, the printed wiring board 57A, the rear part of the LED 55, and a part of the wiring (insulated electric wire) 57B are all filled with a waterproof filler 54A such as silicon resin. Are protected from rainwater.
[0039]
Also in this case, as in each of the above-described embodiments, since the minute hole 58 has a minute diameter, and the LED 55 is not emitting light, the minute hole 58 cannot be visually recognized by the driver. Is never recognized.
In addition, when the LED 55 is caused to emit light, the LED 55 can obtain a sufficient luminous intensity, so that the driver can visually recognize the dot-strip mark display due to the light bleeding phenomenon.
[0040]
Further, only a minute hole 58 is formed in the reflective guide sign, and the LED 55 is mounted on the case 54 including the wiring and can be easily attached from the rear, so that it can be configured very inexpensively.
In particular, since all conductive parts such as the LED 55 are waterproofed with a waterproof filler, they are also suitable for outdoor use.
[0041]
In each of the embodiments described above, the case where the LEDs are provided in the form of a vertical and horizontal matrix (FIGS. 1, 2, and 5) can display symbols other than the x mark. It is not limited to the x mark.
Further, when it is desired to display only the x mark when necessary, for example, as shown in FIG. 3, only the LED 15A (black circle) corresponding to the position of the x mark may be mounted, and the LED 15B (white circle) that is no longer necessary is mounted. Of course, it is not necessary to provide a minute hole for insertion.
[0042]
Moreover, although the case where the thing of diameter 3-5mm was used as an example was demonstrated as LED, it is not limited to this, If the LED and the insertion hole of LED are the magnitude | sizes which are not recognized by a driver at the time of non-light emission. Of course it is good.
Furthermore, although the case where the light emission color of the LED is red is used as an example, other colors may be used, and light emission control of each color LED is performed using a LED in which two or more chips are mounted. Needless to say, multicolor control can be achieved.
[0043]
In addition, about the mounting position of the front-back direction of LED, the case where it mounted according to the front surface position of a display surface was demonstrated to the example, However, It is not limited to this.
For example, the mounting position of the LED may be shifted rearward (back side) in order to make it less susceptible to the effects of sunlight or the light of a vehicle headlight.
Further, the arrangement position of the minute holes (LEDs) may be any position on the display symbol, but the situation of each preceding road can be clearly displayed by providing the position on the arrow indicating the course.
[0044]
【The invention's effect】
As described above, the present invention arranges a plurality of micro holes in a vertical and horizontal matrix form on the first display pattern formed on the plate-like or sheet-like predetermined member, and inside these micro holes, A plurality of LEDs for displaying a second display design such as an arbitrary sign design, a character or a symbol superimposed on the first display design at the time of light emission are inserted and arranged. When the LED does not emit light, the size is not visible to the occupant of the traveling vehicle, specifically 3 to 5 mm.
[0045]
Therefore, in each of these information display devices, only when the LED emits light, an arbitrary second display symbol is superimposed on the fixed first display symbol, and can be visually recognized by the occupant of the traveling vehicle in a dotted manner. The function of the guide sign defined by the signing instruction can be maintained, and the preceding road condition can be clearly displayed to the driver.
Further, unlike the prior art, there is no need to separately provide a variable display device, and the equipment cost can be greatly reduced. In addition, a new installation space is not required, and it can be easily installed even in a relatively small place.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an information display device according to a first embodiment of the present invention.
FIG. 2 is an explanatory diagram showing an information display device according to a second embodiment of the present invention.
FIG. 3 is an explanatory diagram showing an information display device according to a third embodiment of the present invention.
FIG. 4 is an explanatory diagram showing another internal display type information display device.
FIG. 5 is an explanatory diagram showing an information display device according to a fourth embodiment of the present invention.
FIG. 6 is an explanatory diagram showing a conventional information display method.
FIG. 7 is an explanatory diagram showing another conventional information display method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Light diffusable translucent board, 12 ... Light source, 13 ... Light from light source, 14 ... Light from front surface, 15, 15A, 15B ... LED, 16 ... Output light of LED, 17 ... Wiring, 18 ... Minute Hole: 19 ... Light diffusive translucent plate, 21 ... Micro hole, 31 ... Light shielding foil, 41 ... Light diffusable light guide plate, 42 ... Light source, 43 ... Light from light source, 51 ... Reflector plate, 51A ... Light reflecting sheet 52 ... light source, 53 ... light from the light source, 54 ... case, 54A ... waterproof filler, 55, 55A, 55B ... LED, 56 ... output light from the LED, 57A ... printed wiring board, 57B ... wiring, 58 ... Micro hole, 59 ... mounting screw, 61 ... guide sign, 62 ... variable display device.

Claims (12)

The colored plate-like or sheet-like light diffusing light guide member forms a display design such as a sign design, a character, or a symbol, and transmits light from a light source disposed on the back surface to a passenger of a traveling vehicle. On the other hand, in the information display device that displays the display pattern,
Disposed on a first display symbol, which is formed on the light diffusing light guide member in vertical and horizontal matrix, a plurality of micro holes penetrating in the thickness direction of the light diffusing light guide member,
A plurality of LEDs that are respectively inserted and arranged in these micro holes and that display a second display design such as an arbitrary sign design, a character, or a symbol by superimposing on the first display design at the time of light emission,
Each minute hole has a diameter which is not visually recognized by a passenger of a traveling vehicle when each LED does not emit light. The information display device according to claim 1,
Micro holes and LEDs are
An information display device, wherein the information display device is disposed only at a position corresponding to a second display symbol composed of a fixedly selected symbol. The information display device according to claim 1 or 2,
Micro holes
An information display device, wherein the light diffusive light guide member is provided on the back surface so as not to penetrate to the front surface. The information display device according to claim 1,
Micro holes
Provided so as not to penetrate to the back surface of the light diffusive light guide member,
A light-shielding member that reflects light from the LEDs arranged inside the micro holes is provided at a position surrounding the micro holes arranged at the position corresponding to the second display design made of the fixedly selected design. An information display device comprising: Information display that displays sign symbols, characters, symbols and other display symbols with colored plate-like or sheet-like light reflecting members, and displays the indication symbols to the occupants of the traveling vehicle by reflecting light from the front of the surface In the device
A plurality of micro holes arranged in a matrix form on the first display pattern formed on the light reflecting member and penetrating in the thickness direction of the light reflecting member;
A plurality of LEDs that are respectively inserted and arranged in these micro holes and that display a second display design such as an arbitrary sign design, a character, or a symbol by superimposing on the first display design at the time of light emission,
Each minute hole has a diameter which is not visually recognized by a passenger of a traveling vehicle when each LED does not emit light. The information display device according to claim 5,
Each LED is
An information display device characterized in that the rear end portion of the transparent lens is filled and waterproofed with a waterproof filler together with the wiring member of the LED, and is inserted and disposed from the front end portion of the transparent lens into a minute hole from the back surface to the front surface of the light reflecting member. . A display vehicle such as a sign symbol, a character, or a symbol is formed by a colored plate-like or sheet-like light guide member, and light is transmitted from the light-diffusing light guide member disposed on the back surface of the traveling vehicle. In an information display device that displays display symbols for passengers of
Located on the first display symbol formed on the light guiding member to the vertical and horizontal matrix, a plurality of micro holes penetrating in the thickness direction of the light diffusing light guide member,
A plurality of LEDs that are respectively inserted and arranged in these micro holes and that display a second display design such as an arbitrary sign design, a character, or a symbol superimposed on the first display design at the time of light emission,
Each minute hole has a diameter which is not visually recognized by a passenger of a traveling vehicle when each LED does not emit light. The information display device according to claim 7,
Micro holes and LEDs are
An information display device, wherein the information display device is disposed only at a position corresponding to a second display symbol composed of a fixedly selected symbol. The information display device according to claim 8, wherein
Micro holes
An information display device, wherein the light diffusing light guide member is provided on the back surface so as not to penetrate to the front surface. The information display device according to claim 1,
Micro holes
An information display device having a diameter of 3 to 5 mm. The information display device according to claim 1,
Each minute hole
An information display device arranged on a first display symbol indicating a course of a road. The information display device according to claim 1,
Each minute hole
An information display device arranged on a first display symbol colored in white.

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