JP5450011B2 - Photovoltaic power generation mechanism and display system - Google Patents

Description

  The present invention relates to a power generation mechanism that is installed in a road facility and generates electric power by artificial light.

Conventionally, street light as a road facility is provided with a photovoltaic power generation panel and a storage battery, the power generated by the photovoltaic power generation panel is received in the daytime in the storage battery, and the power is taken out from the storage battery at night. There has been proposed an LED that is turned on (see, for example, Patent Document 1).
According to this street light, by using an LED with low power consumption as a light source, the consumption of the storage battery is reduced, so that the lighting can be continued without running out of the battery throughout the night.

JP 2003-151320 A

  However, streetlights with photovoltaic panels and storage batteries have insufficient power storage capacity when the sunshine duration is short or when the solar radiation intensity is not sufficient due to weather conditions, causing the battery to run out at night. There is a problem that lighting stops.

  In order to prevent such a problem, it is necessary to connect to a public power supply network and receive backup power, and a connection line to the power supply network, a power supply switching circuit, and a transformer circuit are required. For this reason, the structure is complicated, the product cost is increased, the installation cost is increased, and the running cost is increased.

  Moreover, in order to ensure the solar radiation intensity to a solar power generation panel, it is necessary to incline a solar power generation panel toward the incident direction of sunlight. Therefore, there is a problem in that the length of the solar power generation panel projecting to the side is increased, and the street light is increased in size.

  Accordingly, the problem of the present invention is a photovoltaic power generation that can be applied to road facilities, can stably generate power independently, does not need to receive backup power from a power supply network, and can be downsized. It is to provide a mechanism and a display system using the mechanism.

  In order to solve the above problems, the photovoltaic power generation mechanism of the present invention is characterized in that an artificial photovoltaic power generation element that generates electric power by receiving artificial light is provided in a road facility.

  According to the above configuration, the artificial photovoltaic power generation element generates electric power by receiving artificial light from a vehicle headlamp passing through a road or a road lamp constituting a road facility. As described above, since there are many artificial light sources such as vehicles and road lights in the road facility, stable electric power can be obtained by the artificial photovoltaic power generation element. Therefore, compared with the case where electric power is generated from sunlight with a solar power generation panel, it is possible to generate electric power stably without being affected by sunshine hours or weather.

  Here, the artificial photovoltaic power generation element refers to an element that generates power by receiving artificial light having a light intensity lower than that of sunlight due to the photovoltaic effect, and for example, an organic thin film photovoltaic power generation element can be used.

  In addition, the road facility widely refers to facilities, civil engineering structures, and building structures provided in association with roads. Equipment included in road facilities includes display equipment such as signs and information displays, traffic control equipment such as traffic lights and vehicle detectors, illuminating lights such as street lights and road lights, and electricity such as telephone poles. Examples of facilities can be given. Examples of civil engineering structures included in road facilities include pavements, bridges, tunnels and retaining walls. Examples of the building structure included in the road facility include a fee collection place and a management building. From these, the light received by the artificial photovoltaic power generation element installed in the road facility may be indoor artificial light or outdoor artificial light.

  In the photovoltaic power generation mechanism of one embodiment, the road facility includes a roadside installation installed on a side portion of the road, and a side of the roadside installation facing the road and a headlight of a vehicle traveling on the road The artificial photovoltaic power generation element is arranged at a position where light emitted from the lamp is irradiated.

  According to the embodiment, artificial light from a vehicle traveling on a road can be effectively incident on an artificial photovoltaic power generation element, and electric power can be generated efficiently.

  Here, the roadside installation refers to equipment or structures provided on the side of the road, for example, continuous equipment or structures such as guardrails, protective fences, railings and sound insulation walls, traffic lights, and telephone poles. Any of discontinuous equipment or structures, such as lighting and signs.

  In the said embodiment, it is preferable that an artificial photovoltaic device is arrange | positioned at the curve part of a road. When the artificial photovoltaic power generation element is disposed on the curved portion of the road, the light from the vehicle headlamp approaching the curved portion enters the light receiving surface of the artificial photovoltaic power generation device from a direction close to the normal direction. Therefore, since the artificial photovoltaic power generation element can receive the light from the headlamp of the vehicle with little loss of light intensity, it can generate relatively high power. For example, by supplying this electric power to a light emitting element provided in a delineator installed in the curved portion to cause the light emitting element to emit light, the vehicle headlamp that approaches the curved portion is used as an energy source, and the road is curved to this vehicle. It is possible to ensure safety. That is, road traffic safety can be ensured while effectively regenerating energy released by vehicles traveling on the road.

  Further, when the artificial photovoltaic power generation element is disposed on the side facing the road on which the vehicle of the roadside installation passes and on the position irradiated with the light emitted from the headlamp of the vehicle traveling on the road, Since the power generation element does not protrude in order to face the sunlight incident direction unlike the solar power generation panel, the photovoltaic power generation mechanism can be downsized.

  In one embodiment, the roadside installation has a rail and an upper installation arranged on the rail, and the artificial photovoltaic device is arranged on a surface of the rail facing the road. On the other hand, a photovoltaic power generation element is arranged on the upper installation object.

  According to the said embodiment, an artificial photovoltaic device is arrange | positioned to the handrail which receives much artificial light from the vehicle which drive | works a road, and a photovoltaic device is arrange | positioned to the upper installation thing which receives much sunlight. As a result, electric power can be generated by artificial light by artificial light power generation elements at night, and power can be generated by sunlight mainly by solar power generation elements in the daytime, so that power can be generated stably throughout the day. Can do.

  Here, the upper installation means facilities or structures arranged on the railings, for example, continuous equipment or structures such as protective fences, sound insulation walls and noise reduction walls, traffic lights, street lights, etc. Any of discontinuous equipment or structures, such as road lights and signs.

  In one embodiment, the artificial light includes at least one of light emitted from a headlamp of a vehicle traveling on a road and light emitted from a road illumination lamp.

  According to the above-described embodiment, the artificial photovoltaic power generation element is arranged in a road facility where there are many sources of artificial light such as vehicle headlamps and road illumination lamps, thereby stably generating electric power. be able to.

  In one embodiment, the artificial photovoltaic device is an organic thin film photovoltaic device.

  According to the above embodiment, the organic thin film photovoltaic device as an artificial photovoltaic device generates light by receiving light emitted from a headlight of an automobile, a road illumination lamp, etc. and having a relatively low light intensity. can do. Here, the organic thin-film photovoltaic element refers to a power generation element in which a power generation layer is made of an organic material.

A display system of the present invention includes the above-described photovoltaic power generation mechanism and a light emitting element to which power generated by the photovoltaic power generation mechanism is supplied.
This light emitting element is used for transmitting information to a vehicle traveling on a road.

  According to the above configuration, electric power is generated by a photovoltaic power generation mechanism from artificial light from a vehicle traveling on a road or artificial light from a road facility, and is supplied to a light emitting element for transmitting information to the vehicle. The generated artificial light can be effectively reused.

  Here, since the said light emitting element transmits information to a vehicle, it can be used for various facilities, such as a sign and a road boundary display.

A display system according to another aspect of the present invention includes the above-described photovoltaic power generation mechanism, and a light-emitting element to which power generated by the photovoltaic power generation mechanism is supplied,
The light emitting element and the artificial photovoltaic power generation element are arranged on a surface of the roadside installation facing the road so as to form a predetermined sign pattern.

  According to the above configuration, when artificial light from a vehicle headlamp or the like is irradiated onto a marker pattern formed using the artificial photovoltaic power generation element and the light emitting element of the photovoltaic power generation mechanism, the artificial photovoltaic power generation element The light emitting element emits light with this power and the sign pattern is emphasized. In this way, information can be effectively transmitted to the vehicle and a warning can be performed while effectively reusing the energy of artificial light from the vehicle.

It is a top view which shows the highway to which the display system of 1st Embodiment was applied. It is a front view which shows a display system. It is a top view which expands and shows a display system. It is sectional drawing which shows the organic thin-film photovoltaic device used for a display system. It is a front view which shows the display system of 2nd Embodiment. It is a front view which shows the display system of 3rd Embodiment. FIG. 7A is a plan view showing the display system of the fourth embodiment, and FIG. 7B is a cross-sectional view showing the display system of the fourth embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
FIG. 1 is a plan view showing an expressway to which the display system of the first embodiment of the present invention is applied, FIG. 2 is a front view showing the display system, and FIG. 3 is an enlarged plan view showing the display system. FIG.

  This display system is installed on a highway having a viaduct structure, and is attached to a wall height column 2 as a roadside installation standing on the side of the road 1. The wall rail 2 is formed of a reinforced concrete wall, and extends along the extending direction of the road 1 at the end of the viaduct floor slab. The display system generally includes an organic thin-film photovoltaic element 3 as an artificial photovoltaic element provided in the wall height column 2 of the curved portion of the road, and a delineator 4.

  The organic thin-film photovoltaic device 3 is formed mainly using a polymer material, has flexibility, and generates power by receiving artificial light having a light intensity lower than that of sunlight, as shown in FIG. It is comprised by the simple laminated structure. As shown in FIG. 4, the organic thin-film photovoltaic device 3 includes a hole carrier layer 32 and a photoactive layer 33 that are sequentially stacked from the cathode 31 side between the cathode 31 and the anode 35 formed on the substrate 30. And a hole block layer 34.

  The substrate 30 is formed of, for example, a flexible polymer material such as polyimide or polyethylene terephthalate, and may be either transparent or opaque to light that generates electric power.

  The cathode 31 and the anode 35 are formed of a material that is transparent to light that generates electric power, and can be formed of, for example, tin oxide to which indium is added.

  The hole carrier layer 32 is formed of a material that allows the holes generated in the photoactive layer 33 to pass through the cathode 31 while blocking the passage of electrons. As such a material, for example, polythiophene, polyaniline, or the like can be used.

  The photoactive layer 33 is formed including an electron donating material and an electron accepting material, and generates electrons and holes by the action of incident light. The holes generated in the photoactive layer 33 are transported to the hole carrier layer 32 by the electron donating material, while the electrons are transported to the hole blocking layer 34 by the electron accepting material.

  The electron-accepting material of the photoactive layer 33 is formed including fullerene. Fullerene is a compound containing a three-dimensional carbon skeleton having a plurality of carbon atoms. The fullerene of the electron-accepting material can be formed by including one or more unsubstituted fullerenes and one or more substituted fullerenes. Examples of the substituted fullerene include C61-phenylbutyric acid methyl ester. Note that the electron-accepting material may include non-fullerene, and for example, carbon nanorods, discotic liquid crystals, inorganic nanoparticles, and the like can be used.

  On the other hand, the electron donating material of the photoactive layer 33 is formed of a conjugated polymer, and for example, polyacetylene, polyaniline, polyphenylene, discotic liquid crystal polymer, or the like can be used.

  The hole blocking layer 34 is formed of a material that transports electrons to the anode 35 and prevents transport of holes to the anode 35. As such a material, lithium fluoride, metal oxide such as zinc oxide, or the like can be used.

  Terminals 36 and 37 are connected to the cathode 31 and the anode 35, respectively, and electric power is output from these terminals 36 and 37.

  This organic thin film photovoltaic device 3 is manufactured by forming each layer 31,... 35 on a flexible polymer substrate 30 using a printing technique. The organic thin film photovoltaic device 3 is formed to have a thickness ranging from several tens μm to several thousand μm, with most of the total thickness being occupied by the thickness of the substrate 30. In particular, about 500 μm is preferable in terms of achieving both flexibility and durability.

  The organic thin film photovoltaic device 3 configured in this way is installed on the surface facing the road (hereinafter referred to as the inside). The inner side surface of the wall height column 2 has a curved surface along a curved road, and the organic thin-film photovoltaic element 3 is curved and installed along the curved surface of the inner side surface of the wall height column 2.

  The delineator 4 includes an LED (light emitting diode) 42 as a light emitting element and a reflecting plate that collects and reflects light emitted from the LED 42 in a substantially cylindrical casing 41 made of resin. A resin lens 43 colored orange is connected to the front side of the casing 41. The casing 41 of the delineator 4 accommodates a circuit connected to the terminals 36 and 37 of the organic thin film photovoltaic device 3 through a power line (not shown). As the circuit, a rectifier circuit, a protection circuit, or an LED drive circuit is adopted as necessary. Through these circuits, the LED 42 is configured to supply power.

  A plurality of delineators 4 having such a structure are installed on the upper end surface of the wall height column 2 at a predetermined interval in the extending direction of the wall height column 2. The organic thin-film photovoltaic elements 3 that are curved along the curved inner surface of the wall column 2 are disposed below the plurality of delineators 4 in order to supply power to each of the delineators 4. Thus, the power generation mechanism of the present invention is constituted by the organic thin-film photovoltaic element 3 attached to the inner side surface of the wall rail 2.

  In the wall height column 2 of the highway, road lights 5, 5,... Are installed as a plurality of illumination lights for illuminating the road 1 at night.

  The display system formed by the organic thin-film photovoltaic element 3 and the delineator 4 constituting the power generation mechanism operates as follows. That is, when the vehicle C traveling on the road 1 approaches the curved portion at night, the light B emitted from the headlamp of the vehicle C is changed in the traveling direction of the vehicle C as schematically shown in FIG. It irradiates the inner surface of the wall rail 2 that is curved and located at the tip of the wall. The organic thin-film photovoltaic element 3 installed on the inner surface of the wall rail 2 receives the light B from the vehicle C, and electrons and holes are generated in the photoactive layer 33 to generate an electromotive force. As a result, a potential difference is generated between the terminals 36 and 37 of the organic thin-film photovoltaic device 3, and a current flows through a circuit (not shown) of the delineator 4 and the LED 42, and the LED 42 emits light. In this way, the delineator 4 positioned ahead in the traveling direction of the vehicle C is lit by receiving light from the headlamp of the vehicle, so that the wall height column 2 exists and the curved portion of the road 1 is Existence is transmitted to the vehicle C as information. Note that the delineator 4 may perform a blinking operation in accordance with a drive circuit provided therein.

  Thus, the display system of the present embodiment receives artificial light from the headlight of the vehicle C traveling on the road 1 by the organic thin-film photovoltaic device 3 installed in the wall rail 2 constituting the road facility. Generate power. Thus, since the organic thin-film photovoltaic device 3 is installed in the wall rail 2 of the highway where there is a lot of artificial light such as the light B from the headlamp of the vehicle C, power can be generated stably. Can do. Therefore, there is no inconvenience that the battery runs out due to lack of sunshine hours or weather conditions as in the case where the power generated in the daytime by the photovoltaic power generation panel is stored in the storage battery and supplied at night, and the delineator 4 is surely provided. Can be operated.

  In the display system of this embodiment, the delineator 4 notifies the vehicle C, which is a power source for the operation of the delineator 4, of the presence of the wall height column 2 and the presence of the curved portion of the road 1. Therefore, the energy output from the vehicle C can be reused to effectively reuse the energy.

  Moreover, since the organic thin-film photovoltaic device 3 is arrange | positioned in the curved surface inside the wall column 2 corresponding to the curved part of the road 1, the display system of this embodiment is effective in the light B from the vehicle C. Therefore, it is possible to efficiently generate power. In addition, since the organic thin-film photovoltaic element 3 does not need to be installed in the sunlight incident direction unlike a photovoltaic power generation panel, the organic thin-film photovoltaic element 3 does not protrude from the wall height column 2, so that the photovoltaic power generation mechanism can be downsized. it can. Note that the organic thin-film photovoltaic element 3 may be disposed on the inner surface of the wall rail 2 corresponding to the straight portion of the road 1.

  In the display system of this embodiment, in the presence of the light from the road lamp 5 installed in the wall height column 2, the light from the headlamp of the vehicle C is received and the organic thin-film photovoltaic element 3 generates power. However, the road light 5 may be deleted, and power generation may be performed using only the light B from the headlight of the vehicle C. Alternatively, an electromotive force may be generated in the organic thin-film photovoltaic device 3 by light from the road lamp 5, and the delineator 4 may be continuously operated while the road lamp 5 is lit.

  Further, the display system of the present embodiment is applied to a highway having a viaduct structure, but may be applied to an expressway having another structure or a general road.

  Moreover, although the electric power produced | generated with the organic thin-film photovoltaic device 3 was supplied to the delineator 4, you may supply electric power to the other apparatus provided with the light emitting element in order to transmit information other than the delineator 4 to a vehicle.

  Moreover, although the organic thin film photovoltaic element 3 was used as an artificial photovoltaic power generation element, other power generating elements such as a dye-sensitized photovoltaic power generation element may be used. In short, any configuration of the power generation element may be used as long as it has a power generation function using artificial light existing in the road facility.

  Moreover, although LED42 was used as a light emitting element, you may use other light emitting elements, such as an organic electroluminescent (EL) element, for example.

(Second Embodiment)
FIG. 5 is a diagram illustrating a display system according to the second embodiment. This display system is different from the display system of the first embodiment in that the configuration of the photovoltaic power generation mechanism that generates electric power is different. In the second embodiment, the same components as those in the first embodiment are referred to by the same reference numerals, and detailed description thereof is omitted.

  The power generation mechanism of the display system according to the second embodiment includes a sound insulation wall 6 as an upper installation on a wall rail 2 as a rail where the organic thin film photovoltaic element 3 is installed. A photovoltaic power generation element 7 that generates electric power by light is installed. The wall height column 2 and the sound insulation wall 6 constitute a roadside installation. The solar power generation element 7 is provided on the surface of the sound insulating wall 6 on the side where the solar radiation intensity can be secured. In FIG. 5, the organic thin-film photovoltaic element 3 and the photovoltaic element 7 are provided on the side facing the road. However, if the photovoltaic element 7 can secure the irradiation time of sunlight, You may provide in the surface on the opposite side to the side which faces the road of the sound insulation wall 6. FIG.

  In the power generation mechanism of the display system of the present embodiment, the solar power generation element 7 is connected to the LED 42 of the delineator 4 via a storage battery (not shown). The delineator 4 is configured to operate with both the power generated by the photovoltaic power generation element 7 and the power generated by the organic thin film photovoltaic power generation element 3.

  According to the display system of this embodiment, in the daytime, the delineator 4 is operated by electric power generated by receiving sunlight with the solar power generation element 7. On the other hand, at night, the delineator 4 is operated by the electric power generated by receiving the light B from the headlight of the vehicle C by the organic thin film photovoltaic power generation element 3. Here, during the daytime, the relatively large power generated by the photovoltaic power generation element 7 causes the delirator 4 to always emit light with a relatively high luminance, while at night, the organic thin film photovoltaic power generation element 3 generates relatively small power. Only when the vehicle C passes by the electric power, it emits light with a relatively low luminance. In this way, by properly using the power generating elements that generate power during the daytime and at night, it is possible to prevent the problem of running out of the battery that occurs when trying to supplement the power at night using only the solar power generation elements. Accordingly, the delineator 4 can be operated without connecting to a public power supply network and receiving backup power. As a result, the installation cost and running cost of the display system can be reduced.

  In addition, while the display system of this embodiment supplies the electric power generated by the photovoltaic power generation element 7 to the delineator 4 in the daytime, the power generated by the organic thin film photovoltaic power generation element 3 is supplied to the delineator 4 at night. When the power generated by the photovoltaic device 7 and stored in the storage battery is supplied to the delineator 4, the power of the organic thin-film photovoltaic device 3 may be supplementarily used when the capacity of the storage battery is depleted.

  Further, in the display system of the present embodiment, the sound insulation wall 6 as the upper installation object is installed on the wall height 2 as the height rail, but the height rail may be configured by a fence other than the wall. The upper installation object may be a net-like protective fence other than the sound insulation wall, a resin noise reduction wall, or the like. Further, the upper installation object may be a discontinuous object such as a traffic light or a road light in addition to a continuous object such as a sound insulation wall or a protective fence.

(Third embodiment)
FIG. 6 is a diagram illustrating a display system according to the third embodiment. This display system is different from the display system of the first embodiment in that the artificial photovoltaic power generation element of the photovoltaic power generation mechanism is different from the display form of the light emitting elements. In the third embodiment, the same components as those in the first embodiment are referred to by the same reference numerals, and detailed description thereof is omitted.

  In this display system, an organic thin-film photovoltaic element 3 as an artificial photovoltaic element and an organic EL element 8 as a light-emitting element are fixed on a base 9 made of a flexible polymer. It is composed. In this curve marker 10, the organic thin-film photovoltaic element 3 is molded in the shape of an arrow as a marker pattern, and is fixed on a rectangular base 9. Further, the organic EL element 8 is disposed on the curve mark 10 so as to fill a space between the periphery of the organic thin-film photovoltaic element 3 and the periphery of the base 9.

  The organic thin-film photovoltaic device 3 is added with a dye for improving light absorption efficiency. When the organic thin-film photovoltaic device 3 is irradiated with light, it generates electric power and emits red reflected light.

  The organic EL element 8 receives the electric power generated by the organic thin film photovoltaic element 3 and emits substantially white light. A rectifier circuit, a protection circuit, an EL drive circuit, and the like are connected between the organic thin film photovoltaic device 3 and the organic EL device 8 as necessary.

  This curve mark 10 has flexibility as a whole by using the organic thin film photovoltaic device 3, the organic EL device 8 and the base 9 as main components, and along the curved surface of the inner surface of the wall rail 2, Curved and attached.

  When the curve sign 10 as the display system of the present embodiment receives light B from the headlamp of the vehicle C traveling on the road 1, the organic thin-film photovoltaic device 3 generates power, and this power is a predetermined circuit. Then, the organic EL element 8 emits light. At this time, the curve sign 10 irradiated with the light B from the headlamp of the vehicle C is reflected by red reflected light obtained by reflecting the irradiated light by the organic thin-film photovoltaic device 3 and white emitted by the organic EL element 8. An arrow-shaped sign pattern is clearly displayed by light. Therefore, it can be transmitted to the vehicle C as information that the wall height column 2 exists ahead of the traveling direction and the curved portion of the road 1 exists.

  In the present embodiment, the organic thin-film photovoltaic element 3 is used as the artificial photovoltaic power generation element. However, for example, other power generation elements such as a dye-sensitized photovoltaic power generation element may be used. Other power generating elements that can generate power with light may be used.

  Moreover, although the organic EL element 8 was used as a light emitting element, you may use other light emitting elements, such as LED. In the case of using the LED, the marker pattern can be clearly displayed by arranging a plurality of white light emitting LEDs so as to surround the organic thin-film photovoltaic element 3 having an arrow shape.

  Moreover, the sign pattern displayed by the organic thin-film photovoltaic element 3 and the organic EL element 8 is not limited to the arrow shape, and various shapes can be adopted according to the installation position of the sign.

(Fourth embodiment)
FIG. 7 is a diagram illustrating a display system according to the fourth embodiment. This display system constitutes a light-emitting road fence buried in a road pavement, and is formed using an artificial photovoltaic device similar to that used in the display system of the first embodiment. In the fourth embodiment, the same components as those in the first embodiment are referred to by the same reference numerals, and detailed description thereof is omitted.

  This road fence 11 is buried in the center of the intersection of the road, receives light B from the headlight of the vehicle C approaching the intersection, generates electric power, emits light from the light emitting unit 13 with this electric power, It informs the vehicle C of the presence of an intersection to call attention.

  FIG. 7A is a plan view of the road fence 11, and FIG. 7B is a cross-sectional view of the road fence 11. As shown in FIG. 7 (a), the road fence 11 has an unequal side octagonal shape having a periphery in which long sides and short sides are alternately arranged in a plan view, and a casing 12 having a bulged central portion. The organic thin-film photovoltaic device 3 as four artificial photovoltaic devices arranged along two opposing long sides of the casing 12 and the four light emitting units 13 arranged in the center. .

  As shown in FIG. 7B, the side near the outer edge of the upper side surface of the casing 12 has a gently inclined surface inclined toward the center, and the organic thin-film photovoltaic device 3 is disposed on this inclined surface. ing. The central portion of the upper side surface of the casing 12 is partitioned by a partition wall extending from the center toward the short side of the unequal side octagon, and widens from the center toward each organic thin film photovoltaic device 3 to be seen in a plan view. The four light emitting portions 13 having a triangular shape are formed. The light emitting unit 13 includes an LED 14 as a light emitting element, a reflecting mirror 15 inclined upward from the center of the casing 12 toward the organic thin film photovoltaic element 3 side, and a transparent cover 16 that covers the LED 14 and the reflecting mirror 15. . The four light emitting units 13 are connected to the organic thin-film photovoltaic elements 3 positioned on the outer edge sides of the respective casings 12 via rectifier circuits, protection circuits, LED drive circuits, and the like as necessary. The road fence 11 is fixed with the lower part of the casing 12 buried in the pavement.

  When the road fence 11 receives light B from the headlamp of the vehicle C, the organic thin-film photovoltaic element 3 generates electric power, the LED 14 emits light, and light is emitted from the light emitting unit 13. This informs the vehicle C that an intersection is present, recognizes the possibility of a vehicle, a pedestrian, or the like entering from the side road, and calls attention.

  Although the organic thin-film photovoltaic element 3 of the road fence 11 is present in the vicinity of the pavement surface of the road, it is disposed on the inclined surface of the casing 12 in which the center portion bulges. Light B can be received at an incident angle close to the normal, and thus power can be generated with relatively high efficiency. Further, the organic thin-film photovoltaic element 3 can be reduced in size because it only needs to generate electric power that can emit light from the light emitting unit 13 when receiving the light B from the headlamp of the vehicle C. In order to efficiently receive the light B from the casing 12, the road fence 11 can be made smaller than the road fence using the photovoltaic power generation panel.

  Further, although the light emitting portion 13 of the road fence 11 exists in the vicinity of the pavement surface of the road, the reflecting mirror 15 is inclined upward from the center of the casing 12 toward the organic thin-film photovoltaic element 3 side. It is visually recognized without problems by the eyes of the C driver and passengers. Therefore, the road fence 11 can alert the vehicle C of the presence of an intersection as the vehicle C whose headlamp is lit approaches.

  Moreover, since this road fence 11 emits light to the vehicle C using the light B from the headlamp of the vehicle C as an energy source, the energy emitted from the vehicle C can be effectively reused. Moreover, road traffic safety can be maintained.

  In the present embodiment, the road fence 11 includes four organic thin-film photovoltaic elements 3 and four light-emitting parts 13, but the number of organic thin-film photovoltaic elements 3 and the number of light-emitting parts 13 are not limited thereto, Any number of one or more may be used. Moreover, the number of the organic thin film photovoltaic elements 3 and the number of the light emission parts 13 may differ. Moreover, although the organic thin-film photovoltaic device 3 was formed in the quadrangle | tetragon and the light emission part 13 was formed in the triangle, all may be formed in another shape.

  Moreover, although the road fence 11 of this embodiment was arrange | positioned at the intersection, the road fence 11 may be arrange | positioned at the straight line part and curve part other than the intersection of a road, for example, on the center line and lane boundary line of a road May be arranged along. Thereby, the boundary of the road lane can be effectively notified while reusing the energy released from the vehicle C.

  Moreover, although the light emitting element of the light emission part 13 was formed with LED14, you may form with organic EL etc. Moreover, the number of the light emitting elements of the light emission part 13 other than one may be sufficient.

DESCRIPTION OF SYMBOLS 1 Road 2 Wall railing 3 Organic thin-film photovoltaic device 4 Delineator 42 LED

Claims (6)

An artificial photovoltaic power generation element that generates electric power by receiving artificial light is installed in road facilities,
The road facility includes a roadside installation installed on a side of the road, and the roadside installation includes a railing and an upper installation arranged on the railing, and the roadside installation includes A photovoltaic power generation mechanism, wherein the artificial photovoltaic power generation element is arranged on the facing surface, and the photovoltaic power generation element is arranged on the upper installation object . The photovoltaic power generation mechanism according to claim 1,
Photovoltaic power generation characterized in that said artificial photovoltaic power generation element is arranged at a position facing said road of said roadside installation and at a position irradiated with light emitted from a headlamp of a vehicle traveling on said road mechanism. The photovoltaic power generation mechanism according to claim 1,
The photovoltaic power generation mechanism, wherein the artificial light includes at least one of light emitted from a headlamp of a vehicle traveling on a road and light emitted from an illumination lamp on the road. The photovoltaic power generation mechanism according to claim 1,
The artificial photovoltaic device is an organic thin film photovoltaic device. The photovoltaic power generation mechanism according to claim 1, and a light emitting element to which electric power generated by the photovoltaic power generation mechanism is supplied,
A display system, wherein the light emitting element is used to transmit information to a vehicle traveling on a road. The photovoltaic power generation mechanism according to claim 1 , and a light emitting element to which electric power generated by the photovoltaic power generation mechanism is supplied,
A display system, wherein the light emitting element and the artificial photovoltaic power generation element are arranged on a surface of the roadside installation facing the road so as to form a predetermined sign pattern.

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