JP4490683B2 - Self-luminous safety equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a self-luminous safety article that is installed mainly on a road or its periphery using a solar cell, and guides the driver's eyes or provides road information or area information. is there.

  2. Description of the Related Art Conventionally, a self-luminous type road safety device that generates electricity with a solar cell and lights or blinks a light emitter using the electric power is well known, and is still installed on a road for general use. (For example, Patent Publication 1)

  This is because solar cells such as crystalline, amorphous, and compound are attached so that sunlight hits the roadside, and the power generated during the day is stored in charging devices such as storage batteries and electric double-layer capacitors at night. The light emitter is turned on and blinking.

  There are various types of such safety products, such as road fences, line-of-sight guide signs, guide signs, traffic signs, information display boards, and the like. For example, road fences are mounted on blocks such as center lines, lane separation lines, pedestrian separation lines, curbs, and median strips to convey the road alignment to the driver and to guide the line of sight. . In addition, it is used as a self-luminous lamp for alerting by attaching or embedding it at the intersection center or stop line.

  For example, a line-of-sight guide sign having a light-emitting body attached to a post is installed on a road with no visibility such as a sharp curve point or a T-junction in the running direction of the vehicle. .

  Information signs and traffic signs convey regional information, traffic regulation information, and traffic support information to the driver.For example, a sign with a sign indicating part attached to a pillar is installed on the periphery of the road, and a light emitter is displayed on the sign. Is attached so that the driver can recognize the presence of the sign, and the sign part is translucent and has a built-in illumination so that it can be easily seen at night.

  The information display board conveys road information to the driver, for example, by displaying letters and symbols by combining lighting of multiple light emitters such as LEDs, etc., temperature and freezing attention, presence of oncoming vehicles, presence of traffic congestion There are other things that convey information.

  In recent years, dye-sensitized solar cells have attracted attention as solar cells. A dye-sensitized solar cell generally has a metal oxide semiconductor layer such as titanium oxide formed on a conductive thin film such as ITO or FTO on a substrate made of glass or resin, and absorbs light energy on the semiconductor surface. A dye for donating electrons to a semiconductor is adsorbed to form a working electrode, and a counter electrode made of a conductive thin film is provided opposite to the working electrode. Furthermore, an electrolyte layer is provided between the electrodes, and electrons can be exchanged to form a battery.

  Dye-sensitized solar cells can be made of resin as the base material, and since a thin layer is formed on the surface of the solar cell, the shape can be freely determined, or bending can be performed after the battery is formed. The degree of freedom is very high with respect to the shape. Also, the weight can be reduced.

Also, the materials used are relatively inexpensive, and silicon-based solar cells also require enormous energy for the purification of silicon in the manufacturing process, but dye-sensitized solar cells do not have such a process and the manufacturing cost is also high. Since it is relatively small, it is excellent in terms of cost.

In addition, dye-sensitized solar cells have a feature that the amount of power generation is less reduced even when the illumination is low, such as during cloudy weather or indoor use, compared to silicon-based solar cells. No worries.

JP-A-8-232216 JP 2002-221922 A JP 7-129108 A Japanese Patent Laid-Open No. 1-220380

  Until now, most of the solar cells used in self-luminous safety products have mainly used silicon-based solar cells, and none have used dye-sensitized solar cells. Conventional self-luminous safety products using solar cells mainly create modules using silicon-based solar cells and incorporate the modules into the product, or attach the modules separately above the safety products. The solar cell is attached to a safety product by attaching it to the outer surface, and the power is supplied to the light emitter. For this reason, the module is externally attached and the main body and the module are separated from each other, resulting in a large-scale apparatus, and there are restrictions on the size and shape of the module to be incorporated inside. Moreover, since the solar cell module and the safety article main body are separate, the number of parts is increased and the assembly process is complicated.

  Further, in the process of manufacturing a silicon-based solar battery cell, very large energy is generally required for purification of the silicon. In addition, since the cells are subdivided to improve the voltage or shaped to match the roadside, the use of silicon-based solar cells for safety products and other small products such as increased cut loss is a material. Both in terms of cost and cost.

In addition, when a silicon-based solar cell module is incorporated into a roadway or the like, a small module of a solar cell is created, and the module is fitted into a predetermined position and potted with resin to be fixed. However, since there were many problems such as bubbles entering during potting, improvement was desired.

  In addition, silicon solar cells that have been generally used have a problem that power generation efficiency is reduced at low illuminance such as cloudy weather, and there is a risk of power shortage when the weather continues for a long time.

  Therefore, the present invention has been made in view of the above problems, and by directly forming a dye-sensitized solar cell on a member of a self-luminous safety article, the number of parts is small, the structure is simple, and the manufacturing process is also simple. It is intended to provide a self-luminous safety product that is simple, relatively inexpensive, and has little reduction in power generation efficiency even at low illuminance.

In order to achieve the above object, the present invention has the following configuration. That is, the self-luminous safety article according to the present invention is a self-luminous safety article that lights or blinks a light emitter with electric power generated by a solar cell, and a dye-sensitized solar cell is used for the solar cell, It has a marking portion, and at least one of the side surface, the upper surface, and the back surface is made of a transparent body in which the dye-sensitized solar cell is directly formed on the inner surface, and the dye-sensitized solar cell is directly formed on the inner surface. The transparent body is formed by forming a conductive thin film directly on the inner surface of the transparent body, and then providing a metal oxide semiconductor on the conductive thin film, and adsorbing a dye on the surface of the metal oxide semiconductor, None, characterized in that it is formed by stacking a counter electrode so as to face this working electrode and filling an electrolyte material containing an electrolyte between the working electrode and the counter electrode It is.
The self-luminous safety article according to the present invention is a self-luminous safety article that turns on or blinks a light emitter with electric power generated by a solar cell, wherein a dye-sensitized solar cell is used for the solar cell, and a marking unit At least a part of the transparent body, the dye-sensitized solar cell is directly formed on the inner surface of the transparent body, and the transparent body in which the dye-sensitized solar cell is directly formed on the inner surface is the transparent body. After forming a conductive thin film directly on the inner surface of the body, a metal oxide semiconductor is provided on the conductive thin film, and a dye is adsorbed on the surface of the metal oxide semiconductor to form a working electrode. The counter electrode is formed so as to be opposed to each other, and an electrolyte material containing an electrolyte is filled between the working electrode and the counter electrode.
The self-luminous safety article according to the present invention is a self-luminous safety article that turns on or blinks a light emitter with electric power generated by a solar cell, and a dye-sensitized solar cell is used for the solar cell, It has a cover-like transparent body, a dye-sensitized solar cell is directly formed on the inner surface of the transparent body, and a light-emitting body is housed below the transparent body, so that sunlight passes through the transparent body and the dye The transparent body, which is incident on the sensitized solar cell, transmits light of the light emitter through the transparent body and is emitted to the outside, and the dye-sensitized solar cell directly formed on the inner surface, After forming a conductive thin film directly on the inner surface of the transparent body, a metal oxide semiconductor is provided on the conductive thin film, and a dye is adsorbed on the surface of the metal oxide semiconductor to form a working electrode. The counter electrode is stacked so as to face each other. Between the electrode and the counter electrode, it is characterized in that the electrolyte material containing an electrolyte is that formed by filling.

  In a dye-sensitized solar cell, a metal oxide semiconductor such as titanium oxide is provided on a translucent conductive thin film, and a dye capable of absorbing light on the surface of the metal oxide semiconductor and supplying electrons to the semiconductor is provided. A working electrode is attached, a counter electrode made of a conductive film is provided opposite to the working electrode, and an electrolyte material containing an electrolyte for transferring and receiving electrons is filled between the electrodes. .

  When the dye-sensitized solar cell is irradiated with light, the dye adhering to the surface of the metal oxide semiconductor is excited, electrons generated by this excitation move to the metal oxide semiconductor, and the electrons further enter the conductive film. It travels through an external circuit and is sent to the light emitter and charging device. Then, the electrons return to the counter electrode side, reduce the electrolyte with the counter electrode, and return to the solar cell system. On the other hand, the dye having transferred electrons to the semiconductor is in an oxidized state, but is reduced from the electrolyte solution to obtain electrons, and returns to the original state.

  As a method for producing a dye-sensitized solar cell used in the present invention, a conductive thin film such as ITO or FTO is first formed on a transparent body. Thereafter, a metal oxide semiconductor is provided on the conductive thin film by a method such as painting, spraying, vapor deposition, or pressure bonding. Next, a dye is adsorbed on the surface of the metal oxide semiconductor by impregnation or the like to complete the working electrode. The other thin-film counter electrode is overlaid from above, and an electrolyte material containing an electrolyte is filled between the electrodes to form a solar cell. At this time, the base material and the working electrode have translucency so that the metal oxide semiconductor provided between the electrodes is irradiated with sunlight.

  The transparent body only needs to be capable of laminating the respective layers of the solar cell and have translucency, and can form the solar cell directly on the base material regardless of the material and shape of the base material. It is possible to create a module of this type, or it is possible to directly form a solar cell on a part of the member. Further, by making the base material made of resin, post-processing such as bending and drilling can be performed. Moreover, it is possible to reduce the weight of the module itself by using a resin for the base material.

  The place where the dye-sensitized solar cell is attached varies depending on the type of safety article, but is not particularly limited as long as it is exposed to sunlight and does not adversely affect the visibility of the driver. For example, it may be modularized into a flat plate shape and attached as an external attachment above a sign or a display board. Moreover, you may attach to the support | pillar which supports a sign and a display board. At this time, if resin is used as the base material, the weight can be remarkably reduced as compared with the conventional glass module. Therefore, the mounting structure can be simplified, and a module having a relatively large area can be attached. Further, by using a resin as the base material, bending processing or the like is possible, and the shape can be changed in accordance with the mounting location. Further, if the electrode is made translucent, it can be a solar cell that can receive light from both sides, and can be attached to a vertical surface or the like without lowering the power generation efficiency.

  If the base material is made of resin and the shape can be optimized according to the installation location, solar cells can be created according to the shape of the part to be fitted inside or outside the safety product, and embedded or embedded. You can also.

  In addition, since dye-sensitized solar cells have the feature that the amount of power generation is small even at low illuminance such as in cloudy weather, for example, there is a problem that light cannot be emitted due to insufficient power even in cloudy weather such as rainy season or when there is heavy rain. Can be avoided.

  A self-luminous safety article stores power generated by a solar battery in a charging device during sunshine, sends the power to a light emitter at night, and lights it.

  Self-luminous safety products further include a discharge constant voltage circuit that supplies the luminous body with power supplied from the charging device at a predetermined voltage, a day / night discrimination circuit that lights the luminous body at night, and a light emission pattern that causes the luminous body to flash. A control circuit or the like may be provided.

  The light emitter used in the present invention is not particularly limited as long as it emits light by electric power, but a light emitting diode is preferable in view of low power consumption and light emission luminance.

  Moreover, the charging device for storing the electric power generated by the solar cell is not particularly limited as long as it can store the electric power. For example, an electric double layer capacitor or a Ni- battery that is a secondary battery. A Cd storage battery, a lead storage battery, or the like can be used. However, the Ni-Cd storage battery has a problem that the battery capacity decreases with use, and the lead storage battery has a problem that zinc sulfate is deposited on the electrode due to overcharging and cannot be recharged. Should be used.

  Further, it is characterized in that it has a marking portion on the front surface, and at least one of the side surface, the upper surface, and the back surface is made of a transparent body having a dye-sensitized solar cell attached to the inner surface.

  It is also possible to form the dye-sensitized solar cell directly on one member of the product, for example, by forming a side surface, a back surface, an upper surface, etc. of a sign or a display plate with a transparent body, If a dye-sensitized solar cell is formed, a self-luminous safety product in which the solar cell is integrated with the safety product can be obtained.

  The solar cell may be provided anywhere on the main body portion other than the marking portion as long as the sun hits it, and the necessary area may be calculated from the power required to operate the light emitter. For example, a light-emitting body such as an LED is attached to the front, and a traffic sign indicating a road alignment sign or a median lane warning light that guides the driver to the road alignment or line-of-sight, an arrow feather that informs the roadside, a stop or a pedestrian crossing, If some or all of the case of safety items such as information signs that inform the driver of road information and area information and the back plate are made transparent, and dye-sensitized solar cells are formed inside, the side and It is possible to provide a safety product in which solar cells are integrated on the upper surface and the rear surface.

  In addition, an internally-illuminated sign having a translucent marking part and a light-emitting body incorporated therein, and a plurality of light-emitting bodies are provided in the marking part, and the light-emitting body informs the driver of characters and designs. It is also possible to provide a safety article in which a part or all of a case such as a display panel is formed of a transparent body and a solar cell is attached to the inner surface.

  Further, at least a part of the marking portion is made of a transparent body, and a dye-sensitized solar cell is attached to the inner surface of the transparent body.

  The marking surface itself of the sign or the display board can be a solar cell. At this time, the entire surface of the display panel may be formed of a transparent body to form a solar battery, or a part of the display panel may be used. In addition, the dye-sensitized solar cell can be translucent or its color can be selected by selecting the dye to be used. Using this property, the solar cell itself can be used as the marking portion. In addition, if the sign is internally illuminated at that time, it is possible to provide a safety article that allows light to pass through the solar cell portion itself.

  Also, it has a cover-like transparent body at the top, a dye-sensitized solar cell is attached to the inner surface of the transparent body, and a light emitter is stored below the transparent body so that sunlight passes through the transparent body. Then, the light is incident on the dye-sensitized solar cell, and the light emitted from the light emitter is transmitted through the transparent body and emitted to the outside.

  The luminous body is built in the safety article, and the upper part of the safety article is covered with a cover made of a transparent body, and a dye-sensitized solar cell is attached to the inner surface of the cover. Sunlight enters from the cover-like transparent body and is irradiated to the solar cell. The electric power generated by the solar cell turns on a built-in light emitter, and the light is irradiated to the outside through this transparent cover and reaches the driver.

  An example of such a product is a self-luminous road fence. The road fence is attached to the center line or lane to teach the driver the road alignment or guides the line of sight, the curb fence attached to the curb, the center of the intersection or the stop line. There are various things, such as those that alert the driver.

  A dye-sensitized solar cell is integrally formed on a member constituting the roadway, for example, a translucent cover material. Usually, the surface layer of the roadside is made of translucent resin or glass. A conductive thin film, a dye-adsorbed metal oxide semiconductor layer, and a conductive counter electrode are directly laminated on this cover material, and an electrolyte is injected between them to seal it. Just stop.

  By doing in this way, in order to incorporate a solar cell in the past, a small module that was separately created and incorporated in a roadside can be integrated with the roadside and the number of parts can be reduced.

  Conventional self-luminous road fences are generally made by making small solar cell modules using silicon-based solar cells and potting them on the surface cover layer of the road fence. It was. At this time, it is necessary to cut a silicon crystal in order to produce a small solar cell, and a lot of offcuts are produced. Therefore, there is a disadvantage that the efficiency is low in terms of material and the cost is relatively high. On the other hand, by using a dye-sensitized solar cell, it is possible to form an irregular-shaped solar cell module in accordance with a member of a road fence or directly form a solar cell directly on a member of a road fence.

  In this way, when a dye-sensitized solar cell is incorporated into a roadside, the method is not particularly limited, but, for example, a solar cell module that is preliminarily fitted to the solar cell installation portion of the roadside is fitted. Alternatively, the solar cell constituent layer may be formed directly on the cover layer of the surface layer.

  When a solar cell module that has been pre-made to fit a solar cell installation part on a roadside is used, since a dye-sensitized solar cell is used, a curved or deformed module can be created, and it can be adjusted according to the place to be fitted. Thus, the size and shape of the module can be determined freely, and there is no need for potting as in the prior art, and the process can be simplified.

  According to the present invention, by using a dye-sensitized solar cell as a solar cell of a self-luminous safety article that turns on or blinks a light emitter with electric power generated by the solar cell, the solar cell is directly formed on a part of the member. Can be reduced, the solar cell module can be reduced in weight, and the amount of power generation can be prevented from decreasing even at low illuminance.

In addition, a part of the case such as the side surface, top surface, and back surface of the self-luminous safety article can be a solar cell, or the marking surface of the sign or the display plate itself can be a solar cell. Can provide safety goods.

  Embodiments according to the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic diagram showing the basic structure of a dye-sensitized solar cell. The dye-sensitized solar cell 2 is provided with a working electrode 21 and a counter electrode 22 so as to face each other on the transparent body 1. In the working electrode, a metal oxide semiconductor 212 is provided on a conductive thin film 211, and a dye 213 is attached to the surface of the metal oxide electrode. In addition, the counter electrode 22 is formed by forming a conductive material 221 on the conductive thin film 222 that has a catalytic function as a cathode for assisting the reduction of the electrolyte and is not affected by the electrolyte. Between the working electrode 21 and the counter electrode 22 facing each other, an electrolyte material 24 containing an electrolyte is filled.

  Sunlight passes through the transparent body 1 and is irradiated to the metal oxide semiconductor 212 having the pigment 213 attached to the surface. When sunlight is irradiated to the dye, the dye absorbs the light energy and is excited to generate electrons. The electrons move to the semiconductor and are sent to an external circuit. The electrons that have passed through the external circuit return to the counter electrode 22, and the electrons are reduced on the material having a catalytic function as a cathode, and the electrons return to the solar cell system. In this way, a series of electric circuits is completed. On the other hand, the dye having transferred electrons to the semiconductor is in an oxidized state, but is reduced from the electrolyte solution to obtain electrons, and returns to the original state.

  As a method for producing a dye-sensitized solar cell used in the present invention, first, a conductive thin film 211 such as ITO or FTO is first formed on a translucent substrate. Thereafter, the metal oxide semiconductor 212 is provided on the conductive thin film by a method such as painting, spraying, vapor deposition, or pressure bonding. Next, the dye 213 is adsorbed on the surface of the metal oxide semiconductor by impregnation or the like to form a working electrode. The counter electrode may be stacked so as to face the working electrode, and an electrolyte material containing an electrolyte may be filled between the two electrodes.

  As the conductive film, for example, a transparent and conductive thin film such as an ITO film, an FTO film, or a zinc oxide film is preferably used. The ITO film is transparent and conductive. This is a thin film composed of indium oxide and a small amount of tin oxide, and Sn4 + substituted at the In3 + position generates carrier electrons and exhibits conductivity. FTO is tin oxide doped with fluorine. The zinc oxide film is obtained by adding aluminum oxide or gallium oxide to zinc oxide, and a transparent film can be formed although the resistance is slightly high. These films may be directly formed on the cover layer, or a film on which an ITO film or FTO film is formed may be attached to the cover. Examples of the method for forming the film include vacuum deposition, sputtering, sol-gel method, and deposition by a cluster beam.

  A metal oxide semiconductor layer is formed on the conductive thin film formed as described above. Examples of metal oxide semiconductors include titanium oxide, zinc oxide, tin oxide, tungsten oxide, zirconium oxide, hafnium oxide, strontium oxide, indium oxide, yttrium oxide, lanthanum oxide, vanadium oxide, niobium oxide, tantalum oxide, chromium oxide, and oxide. Molybdenum, iron oxide, nickel oxide, silver oxide, etc., strontium titanate, calcium titanate, etc., and mixtures thereof can be used, and titanium oxide is used in consideration of chemical stability, cost, and electromotive force of power generation. Is preferred.

  At this time, the titanium oxide is preferably anatase type titanium oxide having high activity. The titanium oxide on the conductive thin film is preferably laminated with fine particles. By doing so, the surface area becomes large, the area irradiated with light is wide, and the exchange of electrons with the electrolyte is also suitable. To be done. At this time, the titanium oxide is preferably fine particles of about several tens nm to several hundreds nm. Further, two or more kinds of particles having different particle diameters may be mixed, and incident light can be suitably scattered to absorb light efficiently. Further, even when a tubular nanotube type titanium oxide having a diameter of several nanometers to several tens of nanometers is used instead of fine particles, the efficiency can be increased because the surface area is large.

  The method of forming the metal oxide semiconductor of titanium oxide on the conductive thin film is not particularly limited. For example, fine titanium oxide powder may be dispersed in an appropriate solvent and applied to the thin film and baked. The fine titanium oxide powder may be fused by a high pressure press. In addition, by sol-gel method, a coating solution using titanium alkoxide as a raw material is created and applied and baked to create a film, or a sol-gel solution using titanium alkoxide as a raw material is atomized and heated, It may be atomized in the air and fixed by spraying it on the electrode. Alternatively, a spray pyrolysis method (SPD method) may be used in which an object on which a metal oxide semiconductor is formed is heated in advance, and a solution containing a titanium oxide raw material is sprayed to deposit titanium oxide on a heating substrate. .

  After the metal oxide semiconductor layer is formed as described above, a dye is adsorbed on the surface of the metal oxide semiconductor. Various dyes have been proposed for dye-sensitized solar cells and can be used. For example, ruthenium complex system, cobalt complex system in metal complex system, cyanine system, merocyanine system, phthalocyanine system, coumarin system, riboflavin system, xanthene system, triphenylmethane system, etc. are well known, These can be used. In particular, a ruthenium complex is preferable for a metal complex system, and a merocyanine system is preferable for an organic system.

  Electrolytes have also been proposed for various dye-sensitized solar cells, and these can be used. As a general one, lithium iodide, iodine, and DMPImI which is an imidazolium salt of a room temperature molten salt are used as an electrolyte, and these are dissolved in a solvent of methoxyacetonitrile, and 4-tert-butylpyridine for voltage adjustment as an additive. Is used as an electrolyte material. In addition, ethylene carbonate or the like may be blended as a solvent, and MPrImI or MBuImI may be used as a room temperature molten salt. Further, MEImBF4- may be added as a diluent.

  Moreover, when a polymerizing agent is added to the above electrolyte material to cause gelation, accidents such as leakage of the electrolyte material from the solar cell can be prevented in advance. Moreover, CuI which is a solid electrolyte material can also be used as an electrolyte material.

  The counter electrode only needs to have a catalytic function as a cathode that assists in the reduction of the electrolyte and is conductive so that it is not affected by the electrolyte. For example, platinum, carbon, carbon nanotubes, etc. are adhered to the ITO or FTO film described above. Are preferably used.

  Next, an example in which a dye-sensitized solar cell is applied to a safety article will be shown. FIG. 1 is a specific example of a self-luminous safety article according to the present invention, showing an embodiment of a self-luminous roadway, and is an explanatory view of a cross section showing the structure of a product.

  FIG. 2 shows a self-luminous roadway that is embedded in the road. As shown in FIG. 2, a charging device 31, a light emitter 32, a control device 33, and the like are incorporated in a sealed bag body 3, and a transparent cover 34 is attached to the upper portion. The cover is on a surface that is exposed to sunlight and is made of a translucent material. A dye-sensitized solar cell is directly formed on the inner surface 35 of the cover 34.

  During the daytime, sunlight hits a solar cell provided on the inner surface of the bag through a transparent cover. Therefore, electricity is generated, and the generated electricity is stored in the charging device 31. At night, the electricity generated in the daytime and stored in the charging device is supplied to the light emitter 32, and the light emitter is turned on. At this time, the light emission pattern can be changed by the control device 33 or the like. For example, if blinking is performed for a certain period, the visibility is further improved. In FIG. 2, the transparent body cover of the light emitter mounting portion has a triangular projection 36, and the light emitted from the light emitter just enters this projection, so that the emitted light is applied to the transparent body cover. While entering smoothly, it discharge | releases at an angle which is easy to visually recognize for a driver | operator (arrow a).

  The solar cell should have a light-receiving area as wide as possible, and the light-transmitting portion of the light emitter does not have to be formed in order to ensure sufficient translucency. You may make it form in the whole surface of a partial cover inner surface by making it translucency. Moreover, in order to ensure sufficient power generation voltage and electric power, it may be divided into a plurality of areas or a plurality of solar cells may be provided.

  The material of the cover is not particularly limited as long as it has translucency and can be stacked with a solar cell and can sufficiently secure adhesion, but is not limited to polycarbonate resin, tempered glass, Acrylic resin, PET resin, PEN resin and the like are preferably used.

  The charging device is not particularly limited as long as it can store electric power. For example, an electric double layer capacitor, a Ni-Cd storage battery that is a secondary battery, a lead storage battery, or the like is used. be able to. However, the Ni-Cd storage battery has a problem that the battery capacity decreases with use, and the lead storage battery has a problem that zinc sulfate is deposited on the electrode due to overcharging and cannot be recharged. Should be used.

  Further, the light emitter is not particularly limited as long as it emits light by electric power, but a light emitting diode is preferable in view of low power consumption and light emission luminance.

    The self-luminous road fence created as described above is attached or embedded in the center line, lane separation line, pedestrian separation line, etc., or attached on a block such as a curb or a median as a curb fence. It can be used in various ways, such as a self-luminous lamp for alerting attached to the center of an intersection or a stop line.

Next, FIGS. 3 and 4 show an example where the self-luminous safety article is a traffic sign. In FIG. 3, the stop sign plate 4 is attached to the column 45. FIG. 3 is a perspective view of the sign. On the marking surface 41, characters stopped by a retroreflective sheet and a light emitter 42 are attached along the periphery of the sign plate. At this time, the side plate 43 and the top plate 44 of the sign 4 are made of a transparent body, and a dye-sensitized solar cell is provided on the inner surface of the transparent body in the shaded portion of the side plate. Although not shown, the back plate may also be formed from a transparent body and a solar cell may be formed on the inner surface thereof. When sunlight is irradiated in the daytime, power is generated by solar cells provided on the side plate and the back plate, and electricity is stored in the built-in charging device. At night, the electricity stored in the charging device is sent to the illuminant, which illuminates the illuminant and alerts the driver that there is a sign. At this time, by placing a control device inside and blinking the light emitter, it is possible to further call attention and to reduce power consumption. Further, by interlocking with the vehicle detection sensor, light may be emitted only when the vehicle approaches, and at this time, the power source of this detection sensor can also be the present solar cell.

  FIG. 4 shows an example in which a sign board 5 indicating a pedestrian crossing is attached to a column 54 protruding on a road. The sign shown in FIG. 4 is an internally illuminated sign, and the marking part 51 is made of a translucent member. Light emission is provided inside the sign, and the light emitted from the light-transmitting sign portion is transmitted to inform the driver that there is a pedestrian crossing. A side surface portion 52 of the sign is formed of a transparent body, and a dye-sensitized solar cell is attached to the inner surface (shaded portion). As another example, the translucent marking portion 51 may be formed of a transparent body to which a dye-sensitized solar cell is attached. The dye-sensitized solar cell can be translucent and can have a desired color by appropriately selecting a dye to be used, and the marking portion itself can be a solar cell. When sunlight is irradiated in the daytime, power is generated by solar cells provided on the side plate and the back plate, and electricity is stored in the built-in charging device. At night, the electricity stored in the charging device is sent to the illuminant, which illuminates the illuminant and alerts the driver that there is a sign. In addition, the pedestrian crossing sign is attached with a spotlight 53 at the bottom of the sign, and combined with a pedestrian sensor, the spotlight is turned on when a pedestrian comes, so that the pedestrian can safely cross the pedestrian crossing. It is good to keep.

5 and 6 are examples of a gaze guidance sign that prompts the driver to gaze at a curve or a T-junction. As for the line-of-sight guidance sign, an arrow is shown in the marking section 61 as shown in FIG. 5 and a plurality of light emitters 63 are arranged in the arrow shape 62, or a circular reflection of the line-of-sight guidance sign 6 as shown in FIG. There are various forms such as a combination of the material 64 and the light emitter 63. At least a part of the side surface 65, the upper surface 66, and the back surface (not shown) of the line-of-sight guide sign 6 may be formed of a transparent body, and a dye-sensitized solar cell may be attached to the inner surface. Further, a part of the marking portion 61 may be formed of a transparent body, and a solar cell may be attached to the inner surface thereof. For example, a portion 67 other than the arrow of the marking portion in FIG. It is good to. When sunlight is irradiated in the daytime, power is generated by solar cells provided on the side plate and the back plate, and electricity is stored in the built-in charging device. At night, the electricity stored in the charging device is sent to the illuminant, which illuminates the illuminant and alerts the driver that there is a sign. At this time, by placing a control device inside and blinking the light emitter, it is possible to further call attention and to reduce power consumption.

FIG. 7 shows a self-luminous arrow blade 7 that is attached on a support column 73 that projects over the road and informs the driver of the road width. The arrow feather marking portion 71 generally has an arrow formed downward by red and white retroreflective sheets, and a plurality of light emitters 72 forms an arrow. The back surface (not shown) of the arrow blade can be formed of a transparent body, and the dye-sensitized solar cell can be attached to the inner surface thereof. Moreover, like the marking part of the said sign board, the marking part itself can also be formed with a solar cell. At that time, it has a two-color solar cell and marking part by appropriately selecting and combining pigments. It can be an arrow feather. When sunlight is irradiated in the daytime, power is generated by solar cells provided on the side plate and the back plate, and electricity is stored in the built-in charging device. At night, the electricity stored in the charging device is sent to the illuminant, which illuminates the illuminant and alerts the driver that there is a sign. At this time, by placing a control device inside and blinking the light emitter, it is possible to further call attention and to reduce power consumption.

  Moreover, the Example of FIG. 8 has shown the display board which displays road information with respect to a driver | operator. The display board of FIG. 8 has a plurality of light emitters 82 attached to the marking portion 81, and displays characters and designs depending on the arrangement of the light emitters. At least a part of the side surface 83, the upper surface 84, and the rear surface (not shown) of the display plate may be formed of a transparent body, and a dye-sensitized solar cell may be attached to the inner surface.

  The material of the transparent body of the marker plate or display plate shown in FIGS. 3 to 8 is particularly limited as long as it has translucency and can be stacked with a solar cell and can sufficiently secure adhesion. Although not used, polycarbonate resin, acrylic resin, PET resin, glass and the like are preferably used.

  The charging device is not particularly limited as long as it can store electric power. For example, an electric double layer capacitor, a Ni-Cd storage battery that is a secondary battery, a lead storage battery, or the like is used. be able to. However, the Ni-Cd storage battery has a problem that the battery capacity decreases with use, and the lead storage battery has a problem that zinc sulfate is deposited on the electrode due to overcharging and cannot be recharged. Should be used. Further, the light emitter is not particularly limited as long as it emits light by electric power, but a light emitting diode is preferable in view of low power consumption and light emission luminance.

It is a schematic diagram which shows an example of the basic composition of the solar cell used for this invention. It is explanatory drawing of the cross section which shows the structure of the road fence which is an example of implementation of this invention. It is explanatory drawing of the sign board which is an example of implementation of this invention. It is explanatory drawing of the sign board which is an example of implementation of this invention. It is explanatory drawing of the gaze guidance mark which is an example of implementation of this invention. It is explanatory drawing of the gaze guidance mark which is an example of implementation of this invention. It is explanatory drawing of the self-light-emitting arrow blade cross section which is an example of implementation of this invention. It is explanatory drawing of the display board which is an example of implementation of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transparent body 2 Dye-sensitized solar cell 21 Working electrode 211 Conductive thin film 212 Metal oxide semiconductor 213 Dye 22 Counter electrode 221 Conductive substance 222 Conductive thin film 24 Electrolyte material 3 Road fence 31 Charger 32 Light emitter 33 Controller 34 Cover 35 Cover inner surface 4 Marking plate 41 Marking surface 42 Light emitter 43 Side plate 44 Top plate 45 Column 5 Marking plate 51 Marking portion 52 Side portion 53 Spotlight 54 Column 6 Line-of-sight guide 61 Marking portion 62 Arrow 63 Light emitter 64 Recursion Reflective sheet 65 Side surface 66 Upper surface 67 Portions other than arrows 68 Posts 7 Self-light emitting arrow blades 71 Marking portion 72 Light emitter 73 Column 8 Display board 81 Marking portion 82 Light emitter 83 Side surface 84 Top surface

Claims (3)

A self-luminous safety product that lights or blinks a illuminant with electric power generated by a solar cell, wherein the solar cell uses a dye-sensitized solar cell, and has a marking portion on the front surface, a side surface, an upper surface, and a rear surface at least one of a transparent material the dye-sensitized solar cell is formed directly on the inner surface and the dye-sensitized solar cell is formed directly on the inner surface transparent body, on the inner surface of said transparent body After directly forming the conductive thin film, a metal oxide semiconductor is provided on the conductive thin film, and a dye is adsorbed on the surface of the metal oxide semiconductor to form a working electrode, so as to face the working electrode. A self-luminous safety article, which is formed by stacking counter electrodes and filling an electrolyte material containing an electrolyte between the working electrode and the counter electrode . A self-luminous safety article that lights or blinks a illuminant with electric power generated by a solar cell, wherein a dye-sensitized solar cell is used for the solar cell , and at least a part of a marking portion is made of a transparent body, The dye-sensitized solar cell is directly formed on the inner surface of the transparent body, and the transparent body in which the dye-sensitized solar cell is directly formed on the inner surface forms a conductive thin film directly on the inner surface of the transparent body. Then, a metal oxide semiconductor is provided on the conductive thin film, a dye is adsorbed on the surface of the metal oxide semiconductor to form a working electrode, and a counter electrode is stacked to face the working electrode. A self-luminous safety article which is formed by filling an electrolyte material containing an electrolyte between a working electrode and a counter electrode . A self-luminous safety article that lights or blinks a light emitter with electric power generated by a solar battery, wherein a dye-sensitized solar battery is used for the solar battery , and has a cover-like transparent body on the upper part. body dye-sensitized solar cell on the inner surface is light emitters housed below the formed directly Rutotomoni the transparent body, sunlight is incident on the dye-sensitized solar cell through the transparent member, the light emitter The transparent body in which the light is transmitted through the transparent body and emitted to the outside , and the dye-sensitized solar cell is directly formed on the inner surface, has a conductive thin film directly on the inner surface of the transparent body. After forming, a metal oxide semiconductor is provided on the conductive thin film, a dye is adsorbed on the surface of the metal oxide semiconductor to form a working electrode, and a counter electrode is stacked to face the working electrode, An electrolyte is placed between the working electrode and the counter electrode. Self-luminous safety supplies, characterized in that those formed by filling the electrolyte material I.

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