JP2006290036A - Visor for mounting on vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a visor which can integrally install a photoelectric transducer on a visor substrate along a shape of the visor substrate, has movability capable of moving the visor substrate and the photoelectric transducer, and prevent deterioration of photoelectric transducing efficiency by suppressing the temperature rise of the photoelectric transducer. <P>SOLUTION: The visor 25 is a curved surface shaped visor 25 attached to an opening part 23 of the surface of an automobile 21, and the plate-like photoelectric transducer 12 having flexibility is installed on the outside surface of the visor substrate 26 in such a state that the main surface of the indoor side of the automobile 21 is exposed to the air of the indoor of the automobile 21. The photoelectric converter 12 can be integrally installed on the visor substrate 26 along the shape of the visor substrate 26, and the photoelectric transducer 12 becomes the visor having the movability along with the visor substrate 26. Deterioration of photoelectric transducing efficiency can be prevented by suppressing the temperature rise of the photoelectric transducer 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted visor provided with a photoelectric conversion device such as a solar battery installed in an opening of a sunroof or the like of a vehicle such as a passenger car.

  Conventionally, as a visor for mounting a passenger car with a photoelectric conversion device such as a solar cell as an auxiliary power source, a glass sunroof capable of daylighting in the vehicle is provided on the upper surface of the vehicle body, and below the sunroof, There has been proposed a visor that is retractable so that it can be retracted in the upper part of the vehicle body, and a photoelectric conversion device is disposed in a daylighting portion (such as an opening) of the visor (see, for example, Patent Document 1 below) ).

In addition, the photoelectric conversion device is disposed at a site where the visor can take light, a terminal member is provided on the side edge of the visor, and the terminal member is provided along a guide member that slides and guides the visor. An automotive solar cell mounting groove structure that is in contact with a conductive plate has been proposed (see, for example, Patent Document 2 below). Further, in Patent Document 2, it is also proposed to perform forced ventilation in the vehicle by feeding power from the photoelectric conversion device.
German Patent Application Publication No. 3545014 No. 6-1490

  However, the photoelectric conversion element used in the conventional photoelectric conversion device is not easily bent because it is mainly a plate-like element made of silicon crystal or the like, and therefore is not suitable for obtaining impact resistance. It was necessary to install a high-strength base material on the incident surface or the opposite surface. Therefore, in order to make the photoelectric conversion device follow the curved surface of the visor where the photoelectric conversion device is provided, it is necessary to perform special processing such as processing the surface of the base material into a curved surface or processing the base material itself into a curved plate shape in advance. In this case, depending on the material of the substrate, there is a problem that the weight of the visor increases and the mobility is impaired.

  In addition, in a photoelectric conversion device using a thin film type photoelectric conversion element made of a silicon thin film or the like, if it is installed in a visor with a limited area, the electromotive force is weak. Insufficient to get the function to do.

  Therefore, the present invention has been completed in view of the above-described problems in the prior art, and an object of the present invention is to use a flexible plate-like photoelectric conversion device having flexibility so that the photoelectric conversion device is visor-based. A visor having a mobility that allows the photoelectric conversion device to move together with the visor base because the weight of the visor base can be suppressed and the increase in the weight of the visor base can be suppressed. It is to be. Moreover, it is setting it as the visor which has the photoelectric conversion apparatus which can suppress the fall of a photoelectric conversion efficiency by suppressing the temperature rise of the photoelectric conversion apparatus by long-time parking etc. under the sun.

  The vehicle-mounted visor of the present invention is a curved visor that is attached to the opening on the surface of the vehicle, and a flexible plate-like photoelectric conversion device is provided on the outer main surface of the visor base. The photoelectric conversion device is installed such that a main surface on the indoor side of the vehicle is in contact with air in the vehicle.

  In the vehicle-mounted visor according to the present invention, preferably, a space communicating with the room is provided between an outer main surface of the visor base material and a main surface on the vehicle interior side of the photoelectric conversion device. It is characterized by being.

  In the vehicle-mounted visor according to the present invention, preferably, the visor base material is formed with an opening that exposes at least a part of a main surface of the vehicle inside the vehicle of the photoelectric conversion device. It is characterized by.

  In the vehicle-mounted visor of the present invention, preferably, the vehicle is an automobile, the opening is a sunroof opening, and the visor has a curved surface shape that matches a curved surface of the vehicle surface. , Movably installed in the opening.

  In the visor for mounting a vehicle according to the present invention, preferably, the sunroof has a window member made of white glass.

  In the vehicle-mounted visor of the present invention, preferably, the photoelectric conversion device includes a granular crystal semiconductor exhibiting a first conductivity type on a flexible substrate as one electrode, and the granular crystal semiconductor A photoelectric conversion element having a second conductivity type formed thereon and the other electrode provided on the semiconductor part, and a first laminated on the substrate side of the photoelectric conversion element via a transparent filler And a second resin film laminated on the other electrode side through a transparent filler.

  The vehicle-mounted visor of the present invention is a curved visor that is attached to the opening on the surface of the vehicle, and a flexible plate-like photoelectric conversion device is provided on the outer main surface of the visor base. The photoelectric conversion device is installed in a state in which the main surface of the vehicle inside the vehicle is in contact with the air in the vehicle interior, so that a flexible plate-like photoelectric conversion device having flexibility is used. It is possible to install the device on the visor base material along the shape of the visor base material, and the increase in the weight of the visor base material is suppressed, so that the photoelectric conversion device is movable with the visor base material. A visor having Moreover, it becomes a visor which has the photoelectric conversion apparatus which can suppress the fall of photoelectric conversion efficiency by suppressing the temperature rise of the photoelectric conversion apparatus by long-time parking etc. under the sun.

  The vehicle-mounted visor of the present invention is preferably provided with a space communicating with the room between the outer main surface of the visor base material and the main surface on the indoor side of the vehicle of the photoelectric conversion device. Air can flow back and forth between the interior of the vehicle and the space, and the temperature rise of the photoelectric conversion device can be efficiently prevented.

  In the vehicle-mounted visor of the present invention, preferably, the visor base is formed with an opening that exposes at least a part of the main surface on the vehicle interior side of the vehicle of the photoelectric conversion device. It is possible to efficiently prevent the temperature rise of the photoelectric conversion device by direct contact of air with the exposed portion of the device and by heat radiation of the exposed portion.

  In the vehicle-mounted visor of the present invention, preferably, the vehicle is an automobile, the opening is an opening for a sunroof, the visor has a curved shape that matches the curved surface of the surface of the vehicle, and the opening is Since the photoelectric conversion device can be installed on the sunroof on the upper surface of an automobile such as a passenger car because it is movably installed, the photoelectric conversion device operates with high photoelectric conversion efficiency. Further, since the photoelectric conversion device can be movably installed along the surface shape of the sunroof of the automobile, for example, the photoelectric conversion device can be smoothly put in and out with the window portion of the sunroof inside the upper portion of the automobile.

  The vehicle-mounted visor of the present invention is preferably a sunroof because the window member is made of white plate glass, so the blue plate glass (soda lime glass) conventionally used for the window member of the sunroof has a light of 800 nm or more. Since it has absorption in the wavelength region, there is a disadvantage that the photoelectric conversion efficiency of the photoelectric conversion device is reduced, but as a window member, absorption is smaller than that of blue plate glass in the wavelength region of light of 800 nm or more, and light of 800 nm or more is used. By using white plate glass (borosilicate glass) that hardly absorbs in the wavelength region, the photoelectric conversion efficiency of the photoelectric conversion device can be maintained high.

  In the vehicle-mounted visor of the present invention, preferably, the photoelectric conversion device has a granular crystal semiconductor exhibiting a first conductivity type on a flexible substrate as one electrode, and is disposed on the granular crystal semiconductor. Forming a semiconductor part exhibiting a second conductivity type, a photoelectric conversion element provided with the other electrode on the semiconductor part, a first resin film laminated on the substrate side of the photoelectric conversion element via a transparent filler, Since it has the 2nd resin film laminated via the transparent filler on the other electrode side, a flexible plate-like photoelectric conversion device can be produced, and a visor with an auxiliary power source having high mobility is provided. It becomes possible to provide.

  The example of embodiment about the visor of this invention is demonstrated in detail below based on drawing.

  1-5 is a figure which shows the example of embodiment about the visor and photoelectric conversion apparatus of this invention. 1-3, 12 is a photoelectric conversion device, 21 is an automobile as a vehicle, 22 is a roof panel on the upper surface of the automobile 21, 23 is an opening formed in the roof panel, and 24 is provided in the opening 23. A sunroof, 25 is a visor, 26 is a visor base material, 27 is a guide block, and 28 is a space. FIG. 3 is a cross-sectional view taken along line A-A ′ of FIG. 2. 4A to 4D are bottom views of the visor 25 according to the present invention as viewed from the interior side of the automobile. 29 is a through hole, and 30 is an opening of the visor 25.

  In FIG. 5, 8 is a photoelectric conversion element, 1 is a flexible substrate as one electrode, 2 is a semiconductor particle, 3 is a granular crystal semiconductor exhibiting a first conductivity type, and 4 is a semiconductor of a second conductivity type. Second conductive type semiconductor layer as part, 5 is an insulator, 6 is a transparent conductive layer as the other electrode, 7 is a finger electrode, 9 is a transparent filler, and 10 is a second resin made of a translucent material. A film 11 is a first resin film made of a weather resistant material.

  The visor 25 according to the present invention is a curved surface attached to the opening 23 on the surface of the automobile 21, and has a flexible plate-like photoelectric conversion device 12 on the outer main surface of the visor base 26. However, it is installed in a state where the main surface on the indoor side of the automobile 21 is in contact with the air inside the automobile 21.

  More specifically, an opening 23 is provided in the roof panel 22 of the automobile 21, and the sunroof 24 is installed so as to be movable in the front-rear direction (the advancing and retracting direction of the automobile 21) so as to cover the opening 23. A visor 25 that is movable in the front-rear direction is installed on the indoor side of the sunroof 24. A guide block 27 is fixed to the edge of the outer main surface (upper surface) of the visor base 26, and is provided in the opening 23 on the vehicle body side so that the visor 25 can move by sliding in the front-rear direction. A guide block 27 is fitted into the guide rail.

  The main surface of the visor 25 has a curved surface as a whole, and a plate-like photoelectric element having flexibility along the upper surface of the curved visor base 26 covered with a soft surface. A conversion device 12 is installed.

  In the present invention, the photoelectric conversion device 12 is installed in a state in which the main surface on the indoor side of the automobile 21 is in contact with the air in the room of the automobile 21, but preferably as shown in FIG. Between the main surface and the main surface on the indoor side of the automobile 21 of the photoelectric conversion device 12, a space 28 communicating with the room of the automobile 21 is provided. In order to allow the space 28 to communicate with the interior of the automobile 21, for example, as shown in FIG. 4B, a partial gap (not shown) that leads from the space 28 to the interior of the automobile 21 is provided. As shown in (a) and (c), a through-hole 29 that penetrates from the space 28 to the interior of the automobile 21 may be formed in the visor base material 26. These through holes are preferably formed at both ends of the space 28, and air can smoothly travel between the space 28 and the interior of the automobile 21.

  Further, as shown in FIG. 4D, the visor base 26 has a configuration in which an opening 30 is formed to expose at least a part of the main surface on the indoor side of the automobile 21 of the photoelectric conversion device 12 to the room. May be. In this case, since a part of the main surface on the indoor side of the automobile 21 of the photoelectric conversion device 12 is exposed to the room, air directly touches the exposed portion of the photoelectric conversion device 12 and also due to heat radiation of the exposed portion. And the temperature rise of the photoelectric conversion apparatus 12 can be prevented efficiently. Further, in this case, the visor base material 26 may be formed with an opening that exposes substantially the entire main surface on the indoor side of the automobile 21 of the photoelectric conversion device 12 to the room.

  The fixing method of the photoelectric conversion device 12 to the visor base material 26 may be a fixing method that maintains the shape so that the main surface is along the upper surface of the curved visor base material 26, and guides the periphery of the photoelectric conversion device 12. A method of fixing with a plate or the like, or a method of fixing by integrally molding with the visor base 26 may be used.

  In order to suppress a temperature rise of the photoelectric conversion device 12 due to parking for a long time under the sun, a high thermal conductivity member may be partially disposed in the space 28 between the photoelectric conversion device 12 and the visor base material 26. The high thermal conductivity member may be made of a metal having high thermal conductivity, for example, a metal foil, a wound metal wire, or the like.

  Further, in order to make the space 28 between the photoelectric conversion device 12 and the visor base material 26 absorb the heat of the photoelectric conversion device 12 or increase the heat capacity of the photoelectric conversion device 12, it is difficult to cause a temperature rise. Or a liquid refrigerant or the like may be present. For example, a box body, a pipe body, or the like containing water or a liquid refrigerant may be installed in the space 28.

  As described above, in the vehicle-mounted visor 25 of the present invention, preferably, the vehicle is the automobile 21, the opening 23 is the opening 23 for the sunroof 24, and the visor 25 matches the curved surface of the surface of the vehicle. It is preferably curved and movably installed in the opening 23. In this case, since the photoelectric conversion device 12 can be installed on the sunroof 24 on the upper surface of the automobile 21 such as a passenger car, the photoelectric conversion device 12 operates with high photoelectric conversion efficiency. Further, since the photoelectric conversion device 12 can be movably installed along the surface shape of the sunroof 24 of the automobile 21, for example, the photoelectric conversion device 12 can be smoothly put in and out with the window portion of the sunroof 24 inside the automobile 21. .

  The visor 25 of the present invention is mounted on a vehicle, and is not limited to the sunroof of the automobile 21 described above, but is used for a windshield, a window portion of a motorcycle such as a motorcycle (including a seat with a sealed seat), a train such as a train. The window portion of a vehicle, the window portion of a ship, the window portion of a small boat such as a motor boat or a cruiser, the window portion of various vehicles such as an airplane window portion, and the like can be provided.

  In the present invention, it is a flexible plate-like photoelectric conversion device 12 having flexibility that can be installed along the curved shape of the visor base material 26, and is required to be strong in bendability and impact resistance. As such a preferable photoelectric conversion device 12, there is one having the following configuration. That is, as shown in FIG. 5, the photoelectric conversion device 12 places the granular crystal semiconductor 3 exhibiting the first conductivity type on the flexible substrate 1 as one of the electrodes, and the first is placed on the granular crystal semiconductor 3. A photoelectric conversion element 8 in which a semiconductor layer 4 having two conductivity types is formed and a transparent conductive layer 6 as the other electrode is provided on the semiconductor layer 4, and a transparent filler 9 is interposed on the substrate 1 side of the photoelectric conversion element 8. The first resin film 11 is laminated, and the second resin film 10 is laminated on the other electrode side through the transparent filler 9.

  For example, when the lower end portion of the granular crystal semiconductor 3 made of silicon is bonded to the substrate 1, the lower end portion of the granular crystal semiconductor 3 is alloyed with the material of the substrate 1 (silicon alloy) to form a p + portion. In order to achieve this, it is preferable to be made of aluminum or an aluminum alloy. Further, the substrate 1 may have a multilayer structure of a flexible first metal plate having a melting point equal to or higher than that of aluminum and a second metal plate made of aluminum or aluminum alloy. For example, as the first metal plate, Those made of iron, nickel alloy, stainless steel or the like are used.

  The semiconductor particle 2 is obtained by forming a semiconductor layer 4 of the second conductivity type (for example, n-type) on the outer periphery of the granular crystal semiconductor 3 of the first conductivity type (for example, p-type). This granular crystal semiconductor 3 of the first conductivity type contains B, Al, Ga, etc. exhibiting p-type in Si, or P, As, etc. exhibiting n-type, in a trace element.

  The semiconductor layer 4 of the second conductivity type is a compound in which the surface of the granular crystal semiconductor 3 of the first conductivity type contains P, As, etc. exhibiting n-type, or B, Al, Ga, etc. exhibiting p-type, or The solution is applied or formed on the surface of the granular crystal semiconductor 3 by using a gas by a thermal diffusion method or the like.

  The shape of the semiconductor particle 2 may be various shapes such as a spherical shape, a spheroid, a rugby ball shape, or a convex curved surface, or a polygonal solid shape. The dependency of the light beam angle can be reduced. The particle size distribution of the semiconductor particles 2 may be uniform or non-uniform, but in the case of uniform, a manufacturing process for aligning the particle size is required, so non-uniformity is more advantageous for manufacturing at a lower cost. is there.

  The average particle size of the semiconductor particles 2 is preferably 0.2 to 0.8 mm. If the thickness exceeds 0.8 mm, the conventional crystal plate-type photoelectric conversion device including the conventional cutting portion of the crystal plate (slicing processing cost for slicing to remove the crystal plate from the ingot) is included. The amount of semiconductor (such as silicon) used in the crystal plate type photoelectric conversion device is not changed, and the merit of using the granular crystal semiconductor 3 is lost. Moreover, when smaller than 0.2 mm, the problem that it becomes difficult to assemble the semiconductor particle 2 to the board | substrate 1 generate | occur | produces. The particle size of the semiconductor particles 2 is more preferably 0.2 to 0.6 mm in order to reduce the amount of semiconductor used.

  The bonding of the semiconductor particles 2 onto the substrate 1 is performed as follows when the substrate 1 is made of aluminum and the semiconductor particles 2 are made of silicon. A large number of semiconductor particles 2 are arranged on the upper surface of the substrate 1 and then heated to a eutectic temperature of 577 ° C. or higher between the aluminum of the substrate 1 and the silicon of the semiconductor particles 2 by applying a certain weight. The semiconductor particles 2 are bonded to the substrate 1 through two alloy layers (not shown).

  After bonding the substrate 1 and the semiconductor particles 2, for example, the surface of the semiconductor particles 2 is covered with a resist or the like and etched to separate the substrate 1 and the semiconductor layer 4 on the semiconductor particles 2 (pn separation).

  The insulator 5 is made of an insulating material for separating the positive electrode (p) and the negative electrode (n), for example, an organic insulating material such as silicone resin. After applying such an insulating material from above the semiconductor particles 2, the surface of the semiconductor particles 2 is cleaned with a cleaning liquid containing hydrofluoric acid.

A transparent conductive layer which also serves as the other electrode on the semiconductor portion of the semiconductor particle 2 and on the surface of the insulator 6 when the semiconductor layer 4 or the outer periphery of the semiconductor particle 2 contains a small amount of an element of the second conductivity type. 7 is formed. The transparent conductive layer 6 is composed of one or more oxide-based layers selected from SnO ₂ , In ₂ O ₃ , ITO, ZnO, and the like, and is formed by a sputtering method, a vapor phase growth method, a coating baking method, or the like. . The transparent conductive layer 6 can also be expected to have an effect as an antireflection film if the film thickness is appropriately selected.

  In order to reduce the series resistance value between the transparent conductive layer 6 and the bus bar electrode for external output, a pattern electrode as a linear finger electrode 7 formed on the transparent conductive layer 6 as an upper electrode at regular intervals. In addition, a bus bar electrode (not shown) for collecting current from a large number of finger electrodes 7 is provided to connect the photoelectric conversion elements 8 together. The material of the finger electrode 7 is made of metal, a mixed material of metal powder and glass, or a mixed material of metal powder and resin. As the bus bar electrode, a copper core whose surface is coated with solder is mainly used.

  Moreover, in order to form a condensing structure, you may form a transparent resin layer so that the unevenness | corrugation of the photoelectric conversion element 8 surface may be further covered over the light-receiving surface of the photoelectric conversion element 8. FIG. In that case, a heat-resistant transparent resin film may be provided in order to form and maintain a condensing structure between the photoelectric conversion element 8 and the upper transparent filler 9.

  The transparent filler 9 is made of an optically transparent and flexible material, and is made of, for example, ethylene vinyl acetate polymer (EVA), polyolefin, fluorine resin, or the like.

  The second resin film 10 made of a translucent material is made of an optically transparent and weather-resistant resin material. For example, polyvinyl fluoride (PVF), ethylene-4 fluoroethylene copolymer (ETFE), poly Such as tetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkoxy copolymer (PFA), tetrafluoroethylene-6 fluoropropylene copolymer (FEP), polytrifluoroethylene chloride (PCTFE), etc. Made of fluororesin.

  The first resin film 11 made of a weather-resistant material is, for example, a fluororesin such as polyvinyl fluoride (PVF), ethylene-tetrafluoroethylene copolymer (ETFE), polytrifluoroethylene chloride (PCTFE), or polyethylene terephthalate. It consists of a resin sheet such as (PET) or the like, or a resin sheet laminated with an aluminum foil or a metal oxide film using these resins. Moreover, it can replace with the 1st resin film 11, and can use the metal sheet | seat which consists of stainless steel etc. so thin that it has flexibility.

  By using the photoelectric conversion device 12 having the above-described configuration, the photoelectric conversion device 12 can be installed on the visor base material 26 along the curved shape of the visor base material 26, and can also be provided with impact resistance. It becomes.

  As the window member of the sunroof 24, blue plate glass (soda lime glass) is generally used. Since the blue plate glass has absorption in a wavelength region of light of about 800 nm or more, the photoelectric conversion device 12 is made of blue plate glass. When it is used for the sunroof 24 having the window member, there is a disadvantage that the photoelectric conversion efficiency is lowered. Therefore, the visor 25 of the present invention, as a window member of the sunroof 24, is a white plate glass that absorbs less light than blue plate glass in the light wavelength region of about 800 nm or more and hardly absorbs light in the wavelength region of light of about 800 nm or more. It is preferable to use (borosilicate glass).

  An embodiment of the visor 25 according to the present invention will be described with reference to FIGS.

  First, the photoelectric conversion element 8 was produced as follows. As the semiconductor particles 2, an n-type silicon layer as the second conductivity type semiconductor layer 4 is formed on the surface of the p-type silicon particles having a diameter of about 0.2 to 0.6 mm as the first conductivity type granular crystal semiconductor 3. The formed silicon particles were used. Then, a large number of semiconductor particles 2 are arranged on the upper surface of the aluminum substrate 1 as one electrode, and heated for about 10 minutes at a temperature equal to or higher than 577 ° C. which is the eutectic temperature of aluminum and silicon. 2 was bonded to the upper surface of the substrate 1.

  Thereafter, only the upper part of the silicon particles was covered with a resist layer, and pn separation was performed by etching with a mixed acid of hydrofluoric nitric acid. After removing the resist layer, the insulator 5 was formed by filling with polyimide resin. The upper surface of the semiconductor particle 2 was washed, and an ITO layer having a thickness of 80 nm was formed as the transparent conductive layer 6 as the other electrode. A finger electrode 7 was formed thereon with a conductive paste in which a thermosetting epoxy resin and silver powder were mixed, and cured at 200 ° C. Furthermore, the bus-bar electrode which consists of a copper ribbon was attached to the transparent conductive layer 6 and the board | substrate 1, and the adjacent photoelectric conversion elements 8 were connected.

  As described above, using a sample in which a plurality of photoelectric conversion elements 8 are connected, a transparent PVF film is used as the second resin film 10 made of a translucent material, and a white PVF film is used as the first resin film 11 made of a weather resistant material. Using ethylene vinyl acetate polymer (EVA) as the transparent filler 9, the first and second resin films are arranged above and below the photoelectric conversion element 8 via the transparent filler 9, and the photoelectric conversion element 8 is sandwiched between them. The photoelectric conversion device 12 was manufactured by laminating with a laminator.

  Next, the photoelectric conversion device 12 is placed on the upper surface of the curved visor base material 26 with a gap so that a space 28 is formed therebetween, and the peripheral portion of the photoelectric conversion device 12 is placed on the upper surface of the visor base material 26. The periphery was bonded and fixed with a metal plate. Further, as shown in FIG. 4A, a through hole was formed in the visor base material 26 from the space 28 to the room so that the space 28 communicated with the room of the automobile 21 and air could go back and forth. Thereby, the visor 25 was produced.

  As Comparative Example 1, a visor 25 was produced in the same manner as in the above example except that the photoelectric conversion device 12 was brought into close contact with the upper surface of the curved visor base material 26.

  As Comparative Example 2, a plate-like photoelectric conversion element made of silicon crystal was produced as follows, and produced in the same manner as in the above example except for the following configuration.

  A p-type silicon semiconductor plate was exposed to a gas containing P (phosphorus) to thermally diffuse P, thereby forming an n + -type semiconductor layer on the surface of the semiconductor plate. Next, by applying a conductive paste containing Al powder to be a p + -type semiconductor layer on one main surface of the semiconductor plate, and applying and baking a conductive paste containing silver or the like to be an electrode , A p + -type semiconductor layer and one electrode were formed. Thereafter, the other main surface of the semiconductor plate was treated with hydrofluoric acid, and then an SiN layer was formed by vapor deposition to form an antireflection layer. After pattern-etching the antireflection layer, a conductive paste containing silver or the like was applied and baked to form the other electrode. After coating the solder layer on one electrode and the other electrode, a bus bar electrode having the surface of the copper core coated with solder was provided on one electrode and the other electrode to connect the photoelectric conversion elements. .

  Next, the following environmental tests were performed on each visor according to the example and the comparative example 1. That is, each visor was irradiated with light from a xenon lamp as pseudo-sunlight, and the temperature of the back surface of the photoelectric conversion device (the interior surface of the automobile) was measured and compared. As a result, the temperature reached 80 ° C. in Comparative Example 1, whereas it reached 70 ° C. in the Example, which was lower than Comparative Example 1, confirming the effect of the present invention.

  Moreover, the test which repeats opening and closing of a visor 1000 times was done with respect to each visor by an Example and the comparative example 2, and the change of the photoelectric conversion efficiency before and behind a test was investigated. As a result, in Comparative Example 2, a decrease of 12.1% was observed as compared with the initial value, and a crack occurred in the photoelectric conversion element. On the other hand, in the examples, no decrease was observed compared to the initial stage, and no changes such as cracks were observed in the photoelectric conversion element.

  In addition, this invention is not limited to said embodiment and Example, A various change can be given in the range which does not deviate from the summary of this invention. For example, a photoelectric conversion device using one of the above-described photoelectric conversion elements, or a photoelectric conversion device in which a plurality of photoelectric conversion elements are connected in series, parallel, or series-parallel may be used. In addition, photovoltaic power generation means using a single photoelectric conversion device, or a plurality of photoelectric conversion devices connected in series, parallel, or series-parallel, using photovoltaic power generation means, directly supplies generated power from this power generation means to a DC load. You may make it do. Further, the generated power may be supplied to an AC load after converting the above-described photovoltaic power generation means into appropriate AC power via power conversion means such as an inverter.

It is a perspective view which shows the example of embodiment of the visor for motor vehicles of this invention. It is a perspective view which shows the state which removed the sunroof about the visor of FIG. It is sectional drawing of the visor in the A-A 'line | wire of FIG. (A)-(d) is the bottom view which looked at the visor of this invention from the indoor side of the motor vehicle. It is sectional drawing of the photoelectric conversion apparatus which has the flexibility used for the visor of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... Semiconductor particle 3 ... Granular crystal semiconductor of 1st conductivity type 4 ... Semiconductor layer of 2nd conductivity type 6 ... Transparent conductive layer 8 ... Photoelectric conversion element 9. .... Transparent filler 10 ... 2nd resin film 11 ... 1st resin film 12 ... Photoelectric conversion device 21 ... Automobile 23 ... Opening 24 ... Sunroof 25 ... Visor 26 ... Visor base material 28 ... Space 29 ... Through hole 30 ... Opening

Claims (6)

A curved visor attached to an opening on a surface of a vehicle, wherein a flexible plate-like photoelectric conversion device is provided on an outer main surface of the visor base, and the vehicle chamber of the photoelectric conversion device A vehicle-mounted visor, characterized in that an inner main surface is installed in a state where it touches the air inside the vehicle. The vehicle according to claim 1, wherein a space communicating with the room is provided between an outer main surface of the visor base and a main surface of the vehicle inside the vehicle of the photoelectric conversion device. Visor for mounting. 2. The vehicle-mounted visor according to claim 1, wherein the visor base is formed with an opening that exposes at least a part of a main surface of the vehicle inside the vehicle of the photoelectric conversion device to the room. . The vehicle is an automobile, the opening is an opening for a sunroof, the visor has a curved shape that matches the curved surface of the surface of the vehicle, and is movably installed in the opening. The vehicle-mounted visor according to any one of claims 1 to 3. The vehicle-mounted visor according to claim 4, wherein the sunroof has a window member made of white plate glass. The photoelectric conversion device is provided with a granular crystal semiconductor exhibiting a first conductivity type on a flexible substrate as one electrode, and forming a semiconductor portion exhibiting a second conductivity type on the granular crystal semiconductor, A photoelectric conversion element provided with the other electrode on the semiconductor portion, a first resin film laminated on the substrate side of the photoelectric conversion element via a transparent filler, and a transparent filler on the other electrode side The vehicle-mounted visor according to claim 1, further comprising: a second resin film laminated via

Images