JP3192965U - Road-shoulder wall-like structure combined with organic EL - Google Patents

Abstract

The present invention provides a road-shoulder-wall-like structure that is present on a shoulder of a highway or the like and is provided with a vehicle guidance sign using an organic electroluminescence device as a light source.
SOLUTION: Vehicle guidance display objects 12 and 13 including an organic electroluminescence device are installed in a specific position and a specific direction of a road shoulder wall-like structure, thereby providing excellent visibility and installation. And maintenance is easy, and even when an impact such as a vehicle collision is applied, it is difficult for a damaged object to scatter.
[Selection] Figure 2

Description

  The present invention relates to a wall-like structure existing on the shoulder of an expressway or the like, and more particularly to a wall-like structure provided with a vehicle guidance sign using an organic electroluminescence device as a light source.

With the recent development of electroluminescence technology such as LED (Light Emitting Diode) and organic EL (Organic Light Emitting Diode = OLED), the use for these road traffic facilities is greatly expected. In particular, since LEDs are excellent in characteristics such as high efficiency and long life, their use as road signs such as traffic lights, road shoulders and tunnel warnings is accelerating.
The organic EL is also expected to be used as a road sign by taking advantage of the fact that it is a thin surface light emission with respect to the LED which is a point light source and is as efficient as the LED (Patent Document 1, Patent Document) 2).

  On the other hand, in order to guide the traveling direction of a traveling vehicle, a display object such as a reflector or a guide light may be installed on a wall surface such as a guardrail, a soundproof wall, or an inner wall of a tunnel. As described above, reports have been made on the use of organic EL as road signs, but there has been no specific study on the use of organic EL as an alternative to reflectors and guide lights. is there.

JP 2001-272937 A JP 2004-270443 A

The display object using reflectors or reflectors attached to wall-like structures such as guardrails cannot be seen by the driver at night when the display is at a high position where the light from the vehicle headlight does not reach or on the side of the vehicle. Had. In addition, since self-luminous displays using mercury lamps require power supply, control equipment, reinforcement, etc., they require labor and cost to install and maintain, and require a relatively large installation space. Therefore, there was a restriction on the installation location.
Furthermore, when these display objects are damaged by a vehicle collision or the like, it is necessary for road safety that the damaged objects are not easily scattered.
This invention makes the said content a subject, and makes it a subject to provide the vehicle guidance display thing excellent in visibility.

  As a result of diligent research in view of the above problems, the present inventors have found that a vehicle guidance display object including an organic electroluminescence device (hereinafter also referred to as organic EL) is directed to a specific position and a specific direction of the road shoulder wall structure. As a result of the installation, the inventors have obtained the knowledge that, even when an impact such as a vehicle collision is applied, it is difficult for scattered objects to scatter, and the present invention has been completed.

That is, the present invention is as follows.
(1) A road road shoulder wall-like structure in which a vehicle guidance display object including an organic electroluminescence device is installed, the vehicle guidance display object being 1 to 5 m from the road surface and perpendicular to the road surface The road-shoulder-wall-like structure is characterized by being installed 10 to 50 ° upward.
(2) The road shoulder wall-like structure according to (1), wherein a portion where the vehicle guidance display object is installed has a curved surface structure.
(3) The roadside shoulder wall-like structure according to (1) or (2), wherein the vehicle guidance display object is installed 3 cm or more outside the roadside outermost exposed surface.
(4) The road shoulder wall-like structure according to any one of (1) to (3), wherein the vehicle guidance display object has a luminance of 200 cd / m ^{2 to} 3000 cd / m ² .
(5) The road shoulder wall-like structure according to any one of (1) to (4), wherein the organic electroluminescence device is a white light emitting type and has a color temperature of 4000 K or less.
(6) The road shoulder wall-like structure according to any one of (1) to (5), wherein a scattering protective film having a parallel light transmittance of 40% or less is laminated on the surface of the vehicle guidance display object. .
(7) The road shoulder wall shape according to (6), wherein an outer surface of the scattering protective film has a concavo-convex structure, the concavo-convex structure has a height of 0.2-100 μm, and a cycle is 20 mm or less. Structure.
(8) The road shoulder wall-like structure according to (6) or (7), wherein the scattering protective film is made of a fluorine-based hydrocarbon resin.
(9) The road shoulder wall-like structure according to any one of (1) to (8), including a solar cell and a power storage device.
(10) The road shoulder wall-like structure according to (9), wherein the solar cell is a film or sheet substrate type.

  A vehicle guidance display that exhibits excellent visibility even under poor visibility conditions such as at night, is easy to install and maintain, and is resistant to scattering of damaged objects even when impacts such as vehicle collisions are applied. Can be provided. In addition, since the color temperature is lower than that of the conventional technology in which a mercury lamp is installed, it is possible to provide a vehicle guidance display that is light on the driver's eyes even during long commuting and has excellent energy efficiency.

Cross-sectional schematic diagram of a typical organic current light-emitting device Guard rail (beam type guard fence) cross-sectional schematic diagram Schematic diagram of inclined plate installed on road shoulder wall structure

  Although the form for implementing this invention is demonstrated in detail below, unless it exceeds the meaning of this invention, it is not limited to these contents.

1. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road-shoulder wall-like structure on which a vehicle guidance display is installed, and the vehicle guidance display is a display using an organic EL as a light source. And its installation method. A vehicle guidance display object, for example, like a road shoulder warning light, informs the driver of the presence of a road shoulder or a wall-like structure and exhibits a function of guiding the traveling direction of the vehicle. The vehicle guidance display object of the present invention may include other components as long as it includes organic EL. For example, in order to improve the visibility and weather resistance of the vehicle guidance display object, a scattering protective film described later, etc. May be included.

1-1. Organic electroluminescent device An organic electroluminescent device (organic EL) is an organic light-emitting material that uses an organic light-emitting material to generate excitons by passing an electric current through the organic light-emitting material layer. A light-emitting device including an organic current light-emitting element that emits (both fluorescent and phosphorescent light) is used. In the present invention, the light-emitting device is particularly sealed with a sealing film or the like. In the present invention, since it is used around a road, it is dangerous to scatter fragments such as thick glass, and it is assumed that a thin and flexible sheet material or film material is used as the sealing material.

It is important that the vehicle guidance display object installed on the road shoulder is easy to recognize when entering the driver's peripheral vision. An organic EL that can be used as a planar light source is suitable in this respect because the larger the light emitting area of the vehicle guidance display object is easier to visually recognize.
Moreover, the height of the vehicle which drive | works a road is various and the angle which visually recognizes a display object changes with vehicles. Organic EL with a wide viewing angle can exhibit excellent visibility for various vehicles.
Furthermore, since the organic EL consumes less power, and is thinner and lighter, it is possible to use an independent power source and to reduce the size and weight of the entire equipment. For this reason, the installation location is not limited, and the labor for installation and maintenance can be reduced. In particular, maintenance of expressway equipment is often performed with lane restrictions, and it is preferable to be able to carry out simply without lane restrictions, because this leads to alleviation of traffic congestion and prevention of accidents.

  The shape and dimensions of the vehicle guidance display object are not particularly limited, and can be appropriately set according to the form and installation space of the wall-like structure to be installed. As described above, the larger the light emitting area, the better the visibility, and when the vehicle guidance display object is long in the traveling direction of the vehicle or when a plurality of vehicle guidance display objects are continuously installed in the traveling direction, the vehicle travels. This is preferable because it is easy for the driver of the vehicle to see. A display object having a long side of 20 cm or more is particularly preferable.

  The lighting method of the organic EL of the vehicle guidance display object is not particularly limited, and it may be turned on or blinking in a situation where visibility is poor such as at night, and the emission color, the amount of light, etc. may be changed.

For example, there is a method (hereinafter also referred to as block lighting) in which vehicle guidance display objects installed at intervals in the traveling direction of the vehicle are sequentially lighted with a time difference.
For block lighting, for example, on a road with a speed limit V [km / hr], it is preferable to set v / 50 ≦ T ≦ v / 10, where T [sec] is the time required for the block lighting to complete. . Within the above range, it becomes easier for the driver of the vehicle traveling within the speed limit to recognize the indicated direction.

  The emission color of the organic EL is not particularly limited, and may be a single color or a plurality of colors, and can be arbitrarily selected according to the purpose. It is preferable to use a white light emitting material because various light emission expressions are possible and visibility can be further improved.

  In the case of white light emission, the color temperature is preferably 4000K or less, and more preferably 3000K or less. 2000K or less is particularly preferable. Within the above range, it is possible to ensure good visibility without placing a burden on the eyes of the driver.

Vehicle guidance luminance of labels of the present invention is, 200 cd / ^{m 2} or more, preferably 3000 cd / ^{m 2} or less, 300 cd / ^{m 2} or more, and more preferably at most 2000 cd / ^{m 2.} 400 cd / m ² or more and 1000 cd / m ² or less is particularly preferable. If it is in the above range, it is possible to obtain brightness that is not too dazzling for the driver even when the light source is directly visually recognized, and can be visually recognized even in a situation where visibility is poor such as at night. Moreover, the lifetime of the luminescent label itself can be extended by appropriately suppressing the luminance.

1-1-1. Organic Current Light-Emitting Element The structure of the organic current light-emitting element used in the present invention is not particularly limited, but a general structure will be described with reference to FIG.
FIG. 1 is a schematic cross-sectional view showing an example of the structure of an organic current light emitting device. In FIG. 1, 1 is a substrate, 2 is an anode, 3 is a hole injection layer, 4 is a hole transport layer, 5 is a light emitting layer, 6 represents a hole blocking layer, 7 represents an electron transport layer, 8 represents an electron injection layer, and 9 represents a cathode. Even if it does not include an injection layer, a transport layer, or the like, a layer having other functions may be included, and each constituent layer may be a single layer or a plurality of layers.

  Further, the method for forming the constituent layers is not particularly limited, for example, a dry film forming method such as a vacuum deposition method or a sputtering method, or a spin coating method, a dip coating method, a die coating method, a bar coating method, a blade coating method, Examples of the wet coating method include a roll coating method, a spray coating method, a capillary coating method, an ink jet method, a screen printing method, a gravure printing method, and a flexographic printing method.

<Board>
The substrate material of the organic current light emitting element is not particularly limited, but is made of quartz glass, non-alkali glass or soda-lime glass, metal plate / metal foil such as aluminum or steel, polyethylene terephthalate, polyolefin, polymethacrylate, polyethylene naphthalate. Examples thereof include plastic films and sheets such as phthalate, polyimide, polycarbonate, and polyether sulfone. In particular, from the viewpoint of safety against collisions with birds, stepping stones, vehicles, etc. (debris will not scatter), light weight, resistance to cracking, and easy wiring and mounting to wall structures, In the case of a metal foil, a plastic film, a sheet, or glass, it is preferable to use a thin-walled flexible substrate.

<Anode>
The anode material of the organic current light emitting device is not particularly limited, but is a metal such as aluminum, gold, silver, nickel, palladium, platinum, zinc oxide such as indium and / or tin oxide, or halogenated such as copper iodide. Examples thereof include metals, carbon black, and conductive polymers such as poly (3-methylthiophene), polypyrrole, and polyaniline. When the substrate is a conductive material, the substrate and the anode may be the same.

<Cathode>
The cathode material of the organic current light emitting device is not particularly limited, and examples thereof include metals such as tin, magnesium, indium, calcium, aluminum, and silver, or alloys thereof. Moreover, in order to suppress the reflection of the light from the outside which arises at the time of light extinction of organic EL, a cathode can also be made into a rough surface.

<Light emitting layer>
In addition to the light emitting material, the light emitting layer of the organic current light emitting element may contain a compound having a hole transporting property (hole transporting compound) or a compound having an electron transporting property (electron transporting compound). preferable. For example, a material using a light-emitting material as a dopant material and a hole transporting compound, an electron transporting compound, or the like, or a mixture thereof as a host material can be given.

  The light emitting material of the light emitting layer is not particularly limited, and may be a fluorescent light emitting material or a phosphorescent light emitting material. From the viewpoint of internal quantum efficiency, a phosphorescent material is preferred. In addition, although a fluorescent light emitting material and a phosphorescent light emitting material may be used in combination, the light emission efficiency as an element is greatly affected by the efficiency of the fluorescent light emitting material. All are preferably phosphorescent materials. The ratio of the light emitting material in the light emitting layer is not particularly limited, but is usually 0.05% by weight or more and usually 35% by weight or less.

The molecular weight of the light emitting material is not particularly limited, but is usually 10,000 or less, preferably 5000 or less, more preferably 4000 or less, still more preferably 3000 or less, and usually 100 or more, preferably 200 or more, more preferably 300 or more, and further. Preferably it is the range of 400 or more.

  The thickness of the light emitting layer is not particularly limited, but is usually 3 nm or more, preferably 5 nm or more, most preferably 10 nm or more, and usually 200 nm or less, preferably 100 nm or less, and most preferably 70 nm or less.

  In the case of using a white light emitting organic current light emitting device, the configuration is not particularly limited, but an RGB stacked type in which light emitting materials such as red (R), green (G), and blue (B) are doped and stacked on individual layers. In addition, there are an RGB dopant type in which a plurality of light emitting materials coexist in one layer, and an RGB block pixel type in which each color is arranged in a planar block shape. When a plurality of layers are formed as in the RGB stacked type, the optical interfaces are formed because the refractive indexes are different in each layer, and the light interferes with each other because the thickness of each layer is close to the wavelength of visible light. A phenomenon occurs in which the color changes depending on the angle. In the case of the RGB dopant dispersion type in which a plurality of light emitting materials coexist in one layer, an optical interface is not formed in the light emitting layer, and color change due to a viewing angle hardly occurs, which is particularly preferable. The RGB block pixel type also hardly changes in color depending on the viewing angle. However, it is necessary to form a block at the time of manufacturing, and there is a problem in that the manufacturing process becomes complicated and expensive.

  The dispersion method and the layer preparation method in the case of the RGB dopant dispersion type are not particularly limited, and examples thereof include a method in which each light emitting material is mixed with a host material and adjusted to the above-described wet film formation method. The RGB dopant dispersion type is a process suitable for an inexpensive and highly efficient normal pressure coating process. Further, the dispersion amount or dispersion ratio of each light emitting material is not particularly limited, and can be set as appropriate according to the target light emission color.

<Other constituent layers>
In addition to the above-described constituent layers, the materials, forms, and adjustment methods of the hole injection layer, hole blocking layer, electron injection layer, protective layer, etc. are not particularly limited. Moreover, you may have a structure other than this, The material, a form, and the adjustment method can use suitably what is used as an organic current light emitting element.

1-1-2. Sealing Material In the present invention, organic EL means a state in which the above-described organic current light emitting element is sealed.
The method for sealing the organic current light emitting element is not particularly limited as long as it can be sealed so as to cover the display and the light emitting region, and a method of bonding an electrode, a substrate, a sealing material, etc. with an adhesive, a thermoplastic resin And a method of sealing by a wet laminating method, a dry laminating method, a hot melt laminating method, an extrusion laminating method, a thermal laminating method or the like. Since the luminescent material may be deteriorated by heat treatment, a method capable of sealing at a temperature of 110 ° C. or lower is preferable.

  The kind of sealing material is not specifically limited, A glass plate, a polymer plate, a film, etc. are mentioned. Since vehicle collision signs may collide with birds, stepping stones, vehicles, etc., it is preferable to use a polymer material that exhibits a buffering function and that does not scatter debris even when damaged, or a thin glass sheet reinforced with a polymer material. More preferably, the polymer material contains an additive or the like that suppresses the intrusion of the deterioration source of the organic current light emitting device such as ultraviolet rays, oxygen, and moisture.

  Moreover, in order to suppress deterioration due to ultraviolet rays or heat, an ultraviolet absorber, an antioxidant, a light stabilizer, or the like may be added to the sealing material. The amount of these additives is not particularly limited, but is preferably 1000 ppm or less. If it is the said range, while being able to suppress degradation by an ultraviolet-ray or a heat | fever, the characteristic of resin can be maintained.

The film thickness of the sealing material is usually 200 μm or more and 1 mm or less, preferably 300
It is not less than μm and not more than 800 μm, more preferably not less than 400 μm and not more than 600 μm. If it is the said range, the penetration | invasion of deterioration sources, such as an ultraviolet-ray, oxygen, a water | moisture content, will be suppressed and the buffer function which protects an element can be obtained.

  The sealing material preferably has a light transmittance of 380 nm or less of 15% or less, and more preferably 8% or less. If it is the said range, deterioration of the luminescent material etc. by an ultraviolet-ray can be suppressed.

1-2. Scattering protection film A scattering protection film may be attached to the outer surface of the vehicle-guided display of the present invention in order to improve the visibility of the organic EL. The scattering protective film means a film that exhibits effects such as reflection of scenery on the surface of the vehicle guidance display object and reflection of sunlight and vehicle headlamps.

The above characteristics of the scattering protective film can be grasped by the parallel light transmittance and the total light transmittance of the film. The parallel light transmittance and the total light transmittance are JIS K 7105 “Testing method for optical properties of plastic”. Is a value measured in accordance with the following equation.
T _p = T _t −T _d
(T _t : Total light transmittance (%) T _d : Diffuse transmittance (%) T _p : Parallel light transmittance (%))
T _t = 100−R−A
(T _t : Total light transmittance R: Total light reflectance A: Absorption rate)

  The parallel light transmittance of the outer surface of the scattering protective film (side surface visually recognized by the driver or the like) is usually 40% or less, preferably 20% or less, and more preferably 10% or less. Within the above range, regular reflection on the surface of the vehicle guidance display object can be prevented, and the burden on the eyes and the disturbance of the visual field to the driver can be suppressed.

  Moreover, 60% or more is preferable and, as for the total light transmittance of the organic EL side surface of a scattering protective film, 80% or more is more preferable. Within the above range, light from the organic EL can be efficiently utilized and visually recognized.

  The material of the scattering protective film is not particularly limited, but it is used as a vehicle guidance display, so it is considered to be installed in a harsh outdoor environment where it can be exposed to sunlight or rainwater and can collide with birds, stepping stones, etc. However, it is preferable to use a resin excellent in weather resistance and impact resistance. Specific examples include polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, polyvinyl fluoride, perfluoroalkoxy fluororesin, ethylene tetrafluoride / hexafluoropropylene copolymer ethylene / tetrafluoroethylene copolymer Fluorocarbon resins such as polymers, ethylene / chlorotrifluoroethylene copolymers; polycarbonates synthesized from polyhydric alcohols such as hydroquinone, resorcin, and bisphenol A and carbonates such as bisalkyl carbonate, bisaryl carbonate, and phosgene Is mentioned. In particular, a fluorine-based hydrocarbon resin is preferable, and ETFE is more preferable.

  Moreover, in order to improve weather resistance, you may add a ultraviolet absorber, antioxidant, a light stabilizer etc. to a scattering protective film. The amount of these additives is not particularly limited, but the total addition amount is preferably 500 ppm or more and 5000 ppm or less. 1000 ppm or more and 3000 ppm or less are more preferable. If it is the said range, a favorable weather-resistance improvement effect and favorable interface adhesive strength can be acquired.

  Although the film thickness of a scattering protective film is not specifically limited, Usually, it is 50 micrometers or more and 200 micrometers or less, Preferably it is 100 micrometers or less. When it is in the above range, the generation of wrinkles and the like during cost and lamination can be suppressed.

  The characteristics of the scattering protective film can also be grasped by the refractive index. The refractive index is preferably 1.6 or less, more preferably 1.5 or less, and further preferably 1.45 or less. Within the above range, partial reflection and total reflection at the interface can be suppressed, and light from the organic EL can be used more efficiently.

  The method for imparting the above-mentioned properties for reducing the parallel light transmittance to the scattering protective film material is not particularly limited, but in addition to utilizing the original properties of the resin used, for example, a method for forming an uneven structure on the film surface, And a method of dispersing the filler in the film resin. The concavo-convex structure may be formed on either the outer surface or the organic EL side surface, but is preferably formed on the outer surface from the viewpoint of suppression of bubbles and ease of formation. The lower limit of the height of the uneven structure is usually 0.2 μm or more, more preferably 0.4 μm or more, and particularly preferably 0.6 μm or more. The upper limit is preferably 100 μm or less, more preferably 60 μm or less, and particularly preferably 40 μm or less. By setting it within the above range, reflected light from the outside can be reduced without impairing the emission intensity of the organic EL. The period of the uneven structure is preferably 20 mm or less, more preferably 15 mm or less, and particularly preferably 12 mm or less. If the above is exceeded, the clarity of the display may be impaired. Moreover, a lower limit is 0.005 mm or more normally, Preferably it is 0.01 mm or more, More preferably, it is 0.05 mm or more. If the value is below the lower limit, the surface may be easily soiled.

  The method for forming the concavo-convex structure is not particularly limited, and a method of transferring the surface concavo-convex from the matrix by heat or pressure is mentioned.

1-3. Other Configurations In order to operate the organic EL, in addition to being connected to a system power supply, it can be combined with a solar battery and a power storage device to be an independent power supply. For example, as shown in FIG. 3, an inclined plate (18 in FIG. 3) combining a vehicle guidance display object (19 in FIG. 3) containing an organic EL and a solar battery panel (20 in FIG. 3) is used as a road shoulder wall. The method of installing in a structure is also mentioned. It can also be activated when the system power supply fails due to a disaster or the like. In addition, it can be easily constructed in places where it is difficult to connect to the system power supply due to the structure of the road, or where costs are high.

  The solar cell to be used is not particularly limited, but it is preferable to use a small and lightweight solar cell in consideration of the output for operating the organic EL, for example, a film-like solar cell or a sheet substrate type solar cell A battery is mentioned.

  The power storage device used is not particularly limited, and examples thereof include a lithium ion secondary battery and an electric double layer capacitor. In consideration of the output for operating the organic EL, it is preferable to use a small and light-weight one, and it is particularly preferable to use a lithium polymer battery finished in a sheet form using a gel electrolyte or a solid electrolyte as the electrolyte.

  The type, form, and installation location of devices other than the organic EL are not particularly limited, but it is preferable to use a small and lightweight device in consideration of operating the organic EL.

  Light-emitting devices, power generation devices, and power storage devices are made into thin sheet-type devices (light-emitting devices: organic EL, power generation devices: film-like or sheet substrate type solar cells, power storage devices: sheet-type lithium polymer batteries), and these are further enclosed in a film Then, the entire apparatus may be integrated. Thus, a self-powered self-luminous induction display object that can be installed on a curved surface can be obtained.

2. Road-shoulder wall-like structure The road-shoulder-wall-like structure in the present application is a structure having a wall surface installed or existing on the road shoulder, as long as it has a wall surface that can be seen from the driver's seat when traveling or stopping. There is no particular limitation. Specific examples include guard rails that prevent vehicles from jumping out of the road, sound barriers that suppress road traffic noise, wind and snow fences that protect vehicles from wind and snow, tunnel inner walls, etc. This is also included.

  In Japan, there are many roads where the above-mentioned wall-like structures are already installed or exist, and particularly on expressways, they are installed on almost all shoulders. Therefore, it is preferable to easily attach the vehicle guidance display object without replacing the existing wall-like structure or excessive processing, because it is possible to reduce labor and cost.

3. Installation position of vehicle guidance display object including organic EL In the wall-like structure of the present invention, the vehicle guidance display object has a height of 1 to 5 m, more preferably 1.5 to 4 m, more preferably 2 from the road surface. It is installed at a height of ˜3 m (14 height in FIG. 2). If the height of the installation position is too low or too high, it may be difficult for the driver to visually recognize depending on the type of vehicle.

  In the wall-like structure of the present invention, the vehicle guidance display object is installed 10 to 50 ° upward, more preferably 15 to 45 ° upward, and further preferably 20 to 35 ° upward with respect to the vertical direction of the road surface. (16 angles in FIG. 2). If the angle is out of the above range, it may be difficult for the driver to visually recognize the display object, and the driver may feel dazzled. Further, by being installed in the above range, even when there is a vehicle collision with the wall surface, a direct collision with the display object can be avoided, and the display object is less likely to fail or break.

  The installation position of the vehicle guidance display object of the present invention is not particularly limited as long as it is within the specified range, and the vehicle guidance display object is directly attached to the wall surface of the wall-like structure, After being attached to the inclined plate as shown in FIG. 3, it may be installed on the wall-like structure.

  The part where the vehicle guidance display object of the present invention is installed may have a curved surface structure as well as a planar structure. By using a flexible organic EL, it can be installed on a curved surface, and the curved surface structure is particularly preferable because of its high strength. Furthermore, if it is flexible, even if bending or bending occurs, it is difficult to break, and no reinforcing material is required, so that light weight and thinness can be realized.

  In the wall-like structure of the present invention, it is preferable that the vehicle guidance display object is installed on the road outer side than the road side outermost exposed surface. The road-side outermost exposed surface is a surface located at a position 15 when referring to FIG. 2, and means a plane or slope closest to the road side on which the vehicle passes. In the wall-like structure of the present invention, the vehicle guidance display object is preferably installed 3 cm or more on the road outer side from the road side outermost exposed surface, and more preferably 10 cm or more. Within the above range, even when there is a vehicle collision with the wall surface, a direct collision with the display object can be avoided, and the display object can be prevented from being broken or damaged.

DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... Anode 3 ... Hole injection layer 4 ... Hole transport layer 5 ... Light emitting layer 6 ... Hole Blocking layer 7... Electron transport layer 8... Electron injection layer 9... Cathode 10... Guardrail beam 11. Including vehicle guidance display 14 ··· Height of vehicle guidance display including organic EL from road surface 15 ··· Road side outermost exposed surface 16 ··· Inclination angle of slope (with respect to vertical direction)
17 ··· Distance between vehicle guidance display object including organic EL and road side outermost exposed surface 18 ··· Inclined plate 19 ··· Vehicle guidance display material including organic EL 20 ··· Solar cell

Claims (10)

A road road shoulder wall-like structure in which a vehicle guidance display including an organic electroluminescence device is installed, wherein the vehicle guidance display is 10 to 5 meters above the road surface and 10 to the vertical direction of the road surface. A road shoulder wall-like structure characterized by being installed 50 ° upward. The road shoulder wall-like structure according to claim 1, wherein a portion where the vehicle guidance display object is installed has a curved surface structure. The road shoulder wall-like structure according to claim 1 or 2, wherein the vehicle guidance display object is installed on the road outer side by 3 cm or more from the road side outermost exposed surface. The road shoulder wall-like structure according to any one of claims 1 to 3, wherein a luminance of the vehicle guidance display object is 200 cd / m ^{2 to} 3000 cd / m ² . The roadside shoulder-like structure according to any one of claims 1 to 4, wherein the organic electroluminescence device is a white light emitting type and has a color temperature of 4000K or less. The road shoulder wall-like structure according to any one of claims 1 to 5, wherein a scattering protective film having a parallel light transmittance of 40% or less is laminated on a surface of the vehicle guidance display object. The road shoulder wall-like structure according to claim 6, wherein an outer surface of the scattering protective film has an uneven structure, the uneven structure has a height of 0.2 to 100 µm and a cycle of 20 mm or less. The road shoulder wall-like structure according to claim 6 or 7, wherein the scattering protective film is made of a fluorine-based hydrocarbon resin. The road shoulder wall-like structure according to any one of claims 1 to 8, comprising a solar cell and a power storage device. The road shoulder wall-like structure according to claim 9, wherein the solar cell is of a film or sheet substrate type.