JP2005136111A - Photovoltaic generation apparatus and system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photovoltaic generation apparatus that is improved in contrast with respect to display and decoration by means of luminous bodies. <P>SOLUTION: The photovoltaic generation apparatus is provided with a solar cell module 15 which is constituted by arranging a plurality of solar cell elements 16 in a planar form and arranging the luminous bodies 23 among the elements 16 so that the bodies 23 may emit light rays with the elements 16 on their backside. Between the solar cell elements 16 and luminous bodies 23, a light shielding sheet or light shielding plate having light transmitting holes H is provided. The light transmitting holes H are disposed correspondingly to the disposed portion of the luminous bodies 23 by installing light shielding sections S to unnecessary light transmitting holes H to shield light. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a photovoltaic power generation apparatus in which a plurality of solar cell elements are arranged in a plane, and in particular, a light emitter such as an LED is arranged with these solar cell elements on the back, and display properties and decorative properties are obtained. It is related with the solar power generation device. Further, the present invention relates to a solar power generation system for mounting this solar power generation device.

  In general, a photovoltaic power generation apparatus is configured such that a solar cell array is arranged on a roof of a house, etc., and sunlight is photoelectrically converted to obtain electric power.

  This use example will be described with reference to FIGS.

  FIG. 9 shows the case where the solar power generation device 2 is arranged on the roof of the house 1. FIG. 10 is a schematic cross-sectional view of the individual solar cell modules 4 constituting the solar cell array 3 in the solar power generation device 2. It is.

  According to the solar power generation device 2 shown in FIG. 9, a plurality of solar cell modules 4 are arranged to form the solar cell array 3, and the power generated by the solar cell array 3 is transmitted to the power transmission cable 5 and the connection box 6. Then, power is transmitted to the grid interconnection inverter 7.

  More specifically, according to the solar cell array 3, a plurality of solar cell modules 4 are connected in series to form a string. The strings are arranged in one row, or two or more rows are collected.

  The electric wires of the power transmission cable 5 are provided according to the number of such strings. The electric wires of the power transmission cable 5 are connected in parallel by the connection box 6, and the DC power generated by the solar cell array 3 is converted into AC power. It inputs into the grid connection inverter 7 to convert, can supply to a general alternating current load, or can sell electric power to an electric power company by grid connection.

  According to the solar cell module 4 shown in FIG. 10, reference numeral 8 denotes a solar cell element, which is configured to obtain electric power by using a photoelectric conversion effect of a semiconductor made of, for example, silicon. A plurality of solar cell elements 8 are electrically connected in series and in parallel and covered with a weather-resistant material so as to obtain a required output voltage and output current.

  In such a solar cell module 4, a light transmission plate 9 such as a glass plate or a synthetic resin plate is disposed on the light receiving surface of the solar cell element 8, and a Teflon (R) film or PVF (PVF (non-light receiving surface) on the back surface thereof. A weather resistant film 10 such as polyvinyl fluoride or PET (polyethylene terephthalate) is applied, and the light transmitting plate 9, the solar cell element 8 and the weather resistant film 10 are stacked on a rectangular main body. The periphery of each side is mounted so as to sandwich a frame 11 made of aluminum metal, SUS, or the like, thereby increasing the strength of the entire solar cell module 4.

  Further, a junction box 12 made of synthetic resin such as ABS resin or aluminum metal is bonded to the back surface of the solar cell module 4, that is, on the weather resistant film 10, and a terminal for taking out the output power of the solar cell module 4. And

  As described above, the solar power generation device 2 is generally used for power generation that converts sunlight into electricity.

  However, in recent years, as described above, by using a configuration in which a plurality of solar cell elements of the same shape are arranged inside a solar cell module, the color of some solar cell elements is different from the color of other elements, A technique has been proposed in which letters and patterns are constructed on a battery module (or solar cell array) to provide design properties. Furthermore, according to Patent Document 1, there is also a technology in which a glass plate is arranged on the light receiving surface side so that it can be visually recognized at night, an LED is provided at the end, and the light receiving surface of the solar cell module is caused to emit light by this LED. Proposed.

  FIG. 11 shows a configuration in which an LED is provided at the end of a glass plate on the light receiving surface side as in the solar cell module described in Patent Document 1.

  The figure is a schematic sectional view of the solar cell module 13. In addition, the same code | symbol is described in the same location as the solar cell module 4 shown in FIG.

  In this solar cell module 13, the LEDs 14 are arranged toward the end face of the light transmission plate 9, and other configurations are the same as those of the solar cell module 4 shown in FIG. 7.

  According to the solar cell module 13 having the above-described configuration, it is possible to light up the solar cell element 8 at night by irradiating the end face of the light transmission plate 9 with the LED 14.

  For reference, although not a solar cell module having design properties, a known technique in which a light emitter such as an LED is incorporated in the solar cell module will be described.

  In the safety warning light shown in Patent Document 2, it is described that a power-saving light-emitting diode is used, and in combination with a storage battery, electricity from the storage battery is supplied to the light-emitting diode to emit light. Has been.

Further, according to Patent Document 3, when a light emitter is incorporated in a solar cell module and a failure occurs in the solar cell module, the failure is indicated by the light emission of the light emitter, thereby causing an abnormality. It was proposed that the task of identifying the solar cell modules that were required could be made easier, and as a result, the problem of requiring a lot of time and labor for quick recovery to normal power generation as before has been solved. Has been.
Japanese Patent Laid-Open No. 2003-92008 Japanese Utility Model Publication No. 6-86187 JP-A-9-148613

  According to the solar cell module of Patent Document 1 described above, it is a technology that can light up a solar cell element at night by providing an LED at the end of the glass plate on the light receiving surface side. It does not have a display function.

  Thus, when using LED with respect to a solar cell module, it is used by the light-up with respect to this solar cell element, or signal display like patent document 2 or patent document 3, Comprising: Several LED is arranged. As a result, no technology has been proposed for improving display and decoration.

  As a result of diligent research in view of the above circumstances, the present inventors have arranged a light emitter between these solar cell elements with respect to a solar cell element group in which a plurality of solar cell elements are arranged in a plane. With respect to the lighting of individual light emitters, the solar cell element group arranged next to it becomes the back, and those lighting becomes more prominent, increasing the contrast, and obtaining excellent display properties and decorativeness. I found it.

  Accordingly, the present invention has been completed based on the above findings, and an object of the present invention is to provide a solar power generation device having an enhanced contrast with respect to display and decoration by a light emitter.

  Another object of the present invention is to provide a solar power generation device that can provide excellent display and decoration even in the daytime.

  Still another object of the present invention is to provide a solar power generation device with increased brightness.

  Another object of the present invention is to provide a photovoltaic power generation apparatus that achieves excellent display and decoration as desired by the user.

  An object of the present invention is to provide a photovoltaic power generation system that blocks unnecessary light from the gantry side when the photovoltaic power generation apparatus of the present invention is attached to the gantry.

  The solar power generation device of the present invention has a plurality of solar cell elements arranged in a plane, a light emitter is disposed on the side opposite to the light receiving surface between these solar cell elements, and a gap between adjacent solar cell elements A solar cell module configured to emit light through the light-emitting body, and a light-shielding sheet or light-shielding plate formed by forming a light transmission hole between the plurality of solar cell elements and the light-emitting body, Among these light transmission holes, a light shielding portion is provided to block light at unnecessary portions, and the light transmission holes are arranged corresponding to the locations of the light emitters.

  Moreover, the solar power generation device of the present invention has a plurality of solar cell elements arranged in a plane, and a light emitter is disposed on the side opposite to the light receiving surface between these solar cell elements, and adjacent solar cell elements. The solar cell module is configured to emit light through the gap, and a light transmission hole is formed between the plurality of solar cell elements and the light emitter so that a removable light-shielding portion is disposed. A light-shielding sheet or a light-shielding plate is disposed, and a light-shielding portion is removed from a required light-transmitting hole among these light-transmitting holes, and a light-transmitting hole is disposed corresponding to the arrangement portion of the light emitter. It is characterized by that.

  Another solar power generation device of the present invention is characterized in that the plurality of solar cell elements are arranged in a matrix.

  Another photovoltaic power generator of the present invention is characterized in that the plurality of solar cell elements are arranged in a staggered manner.

  Moreover, the solar power generation device of the present invention includes the solar cell module and a frame that supports the solar cell module.

  Furthermore, the solar power generation device of the present invention is characterized in that the solar cell module is triangular, rectangular, trapezoidal or polygonal.

  The solar power generation device of the present invention is characterized in that the solar cell module is circular or elliptical.

  Another solar power generation device of the present invention is characterized in that the light emitter is an LED.

  The photovoltaic power generation system of the present invention includes the photovoltaic power generation apparatus of the present invention and a gantry for fixing the photovoltaic power generation apparatus, and further, the photovoltaic power generation apparatus is made light incident from the lower side. It is attached to a gantry.

  As described above, according to the solar power generation device and the solar power generation system of the present invention, as in the above configuration, a plurality of solar cell elements are arranged in a planar shape, and the solar cell elements are placed between the solar cell elements on the back surface. By arranging the illuminant, the color tone of the solar cell element became the back surface, and the luminance of the illuminant was increased and the contrast could be improved.

  In particular, by arranging a light-shielding sheet or light-shielding plate formed with a light transmission hole as described above between the solar cell element and the light emitter, light irradiation is narrowed by such a light transmission hole. As a result, the luminance could be further increased.

  In addition, according to the present invention, when such a light-shielding sheet or light-shielding plate is disposed, a light-shielding portion is provided to shield light from unnecessary portions of the light transmission holes, and the light emission is performed. By using a light-shielding sheet or a light-shielding plate formed with a light-transmitting hole formed to arrange a light-transmitting hole corresponding to the arrangement site of the body, or to arrange a removable light-shielding part, The light-shielding part is removed from the required light-transmitting holes among these light-transmitting holes, and the light-transmitting holes are arranged corresponding to the locations of the light emitters. And decoration.

  In addition to enhancing versatility in this way, it can also be applied to such a case when the user further desires to change the light emission position at a later date.

  Further, according to the present invention, a plurality of solar cell elements are arranged in a matrix, or arranged in a staggered manner, or the solar cell module is formed in a triangular shape, a rectangular shape, a trapezoidal shape or a polygonal shape, By making it circular or oval, its appearance can be varied, and with these aspects on the back and a light emitter placed between each solar cell element, it has excellent display and decorative properties. Obtained.

  Hereinafter, an embodiment of a solar power generation device according to the present invention will be described in detail with reference to the drawings.

  First, each figure will be described.

  FIG. 1 is a schematic cross-sectional view schematically illustrating a solar cell module 15 of the solar power generation device of the present invention, FIG. 2 is an enlarged view of a main part of the solar cell module 15, and FIG. 3 is a combination of a light emitter and a light shielding portion. FIG. 5 is a perspective view showing a three-part arrangement structure of a light-shielding sheet or light-shielding plate formed by further forming a light transmission hole and a solar cell module.

  FIG. 4 is a top view showing a region where a light emitter can be attached in the solar cell module 15 (shown by a hatched portion in the figure), and FIG. 5 is a light-shielding sheet or light-shielding plate used for the solar cell module 15. is there. FIG. 6 shows a part of the solar cell module 15 of the solar power generation device according to the present invention, in which extraneous light is blocked by the solar cell elements, and further illustrates the state of light transmission through the light transmission holes in the light shielding sheet or light shielding plate. FIG. FIG. 7 is a perspective view showing a solar power generation system of the present invention. FIG. 8 is a wiring diagram for explaining wiring to the light emitter of the photovoltaic power generation apparatus according to the present invention.

  These figures will be described in detail below.

  Also in the solar power generation device of the present invention, for example, as shown in FIG. 9, the solar power generation device is arranged on the roof of the house 1 or the like.

  Hereinafter, the solar cell module 15 which comprises this solar power generation device is described.

  As shown in FIG. 1, the solar cell module 15 is formed by connecting a predetermined number of solar cell elements 16 (16a to 16e) mainly made of silicon or the like in series and in parallel to obtain arbitrary output voltage and output current. I am doing so.

  In this example, a plurality of solar cell elements 16 (16a to 16e) are arranged in a matrix. This solar cell element is constituted by a crystalline solar cell such as single crystal or polycrystalline silicon, or a thin film solar cell.

  A light-transmitting plate 17 such as a glass plate or a synthetic resin plate is disposed on the light-receiving surface of these solar cell elements 16, and a light-blocking sheet or light-blocking formed by forming a light-transmitting hole H on the other non-light-receiving surface (back surface). Apply the board.

  According to this example, in the case of a light-shielding sheet, it may be thinned with a metal material such as a synthetic resin material or aluminum, and thinned while maintaining the light-shielding property.

  For example, for synthetic resin materials such as Teflon (R) film, PVF (polyvinyl fluoride), and PET (polyethylene terephthalate), an aluminum foil that is a light shielding material such as PET-aluminum foil-PET is used. The intermediate layer is configured to have both light shielding properties and insulating properties.

  In addition, a PET-PET-PET three-layer PET structure may be used. In this configuration, the intermediate PET may be colored using a paint or a pigment so as to have a light-shielding property. In addition, what is necessary is just to make it PET of the composition from which each layer differs in characteristics, such as insulation, coloring, and moisture prevention, for such a multilayer structure.

  In the case of a light shielding plate, a metal plate, a ceramic plate or a synthetic resin plate having light shielding properties may be used.

  And the light transmission hole H is formed corresponding to the arrangement | positioning site | part of the light-emitting body 23 with respect to such a light-shielding sheet or light-shielding plate.

  In this example, a paint or pigment that already has a light transmission hole H formed on a synthetic resin material such as a light-transmitting Teflon (R) film, PVF (polyvinyl fluoride), or PET (polyethylene terephthalate). By attaching a colored Teflon (R) film or the like which becomes light-shielding, a weather-resistant film 18 having light-shielding properties is attached as the light-shielding sheet.

  A transparent synthetic resin made of, for example, EVA (ethylene-vinyl acetate copolymer resin) or the like is interposed between the light transmission plate 17 and the weather resistant film 18 to form the filler 19.

  Further, in the weather resistant film 18 formed with the light transmission holes H, a light shielding portion S is provided to block light from unnecessary portions of the light transmission holes H.

  As described above, by appropriately providing the light shielding portion S, the light transmission holes H are arranged corresponding to the arrangement portions of the light emitters 23.

  When the light-shielding portion S is a light-shielding sheet, it may be thinned with a metal material such as a synthetic resin material or aluminum and thinned while maintaining the light-shielding property.

  When the light shielding part S is a light shielding plate, a metal plate, a ceramic plate or a synthetic resin plate having light shielding properties may be used. For example, the light transmission hole H may be drilled in an aluminum plate, or the light transmission hole H may be integrally formed by pressing. In addition to a ceramic plate, a resin plate such as wood, plastic, acrylic or polycarbonate may be used. If the light transmitting hole H is formed in a colored material by drilling or pressing, the same effect of the present invention is obtained. can get. Further, in the case of a plate-shaped light shielding plate, if it is thick, it can also be used as a holding means for embedding a light emitter.

  In addition, even if the plate is thin, it is easy to attach the light emitter by providing a light emitter holder such as a claw, and if the holder is a detachable structure, maintenance by attachment / detachment (change of the light arrangement) Also improves.

  Furthermore, as a method of fixing the light-shielding portion S, it may be adhered to the back surface of the solar cell module with an adhesive or the like. In addition, it is fixed to the solar cell module frame with screws or bolts, or using a magic tape. The structure which can be attached or detached may be sufficient. Further, a stopper may be provided on the frame and may be attached and detached by being pressed and fixed with a spring or the like, or a clasp or the like may be provided on the light shielding plate side.

  According to this example, the light emitter 23a is disposed corresponding to the gap 22a, the light emitter 23b is disposed corresponding to the gap 22b, the light emitter 23c is disposed corresponding to the gap 22c, and the light emitter 23d is disposed corresponding to the gap 22d. To do.

  Examples of these light emitters 23 (23a to 23e) include LEDs (light emitting diodes) and lamps.

  Further, the light transmission hole Ha corresponding to the gap 22a (light emitter 23a), the light transmission hole Hb corresponding to the gap 22b (light emitter 23b), the light transmission hole Hc corresponding to the gap 22c, and the gap 22d. A light transmission hole Hd is arranged corresponding to (light emitter 23d).

  Then, these light emitters 23 (23a, 23b, 23d) are attached to the weather resistant film 18 with an adhesive member made of an acrylic double-sided adhesive tape, an acrylic adhesive, a silicon adhesive (resin), or the like. These adhesive materials are good in that they have good weather resistance and can be easily removed later. For example, 3M VHB tape is suitable.

  In the solar cell module 15 having such a configuration, a junction box 20 made of ABS resin, aluminum metal, or the like is bonded to the outside of the weather-resistant film 18 on the non-light-receiving surface (back surface) side. And it is set as the terminal so that output electric power may be taken out through this junction box 20.

  Further, according to the solar cell module 15, which is generally rectangular, the frame body 21 that sandwiches the surrounding four sides of the main body is provided, and the main body of the solar cell module 15 is supported by the frame body 21. The strength is improved.

  Such a frame 21 is made of, for example, aluminum metal or SUS.

  As described above, a predetermined number of solar cell elements 16 (16a to 16e) are connected in series and in parallel, but the number of series and parallel is determined in order to obtain a predetermined output power.

  And in such an arrangement | sequence, the clearance gap 22 is provided for the wiring of the positive electrode of the adjacent solar cell elements 16 (16a-16e), a negative electrode, and a short circuit prevention.

  For example, there is a gap 22a between the solar cell element 16a and the solar cell element 16b, a gap 22b between the solar cell element 16b and the solar cell element 16c, and a gap between the solar cell element 16c and the solar cell element 16d. A gap 22d exists between the gap 22c and the solar cell element 16d and the solar cell element 16e.

  According to the solar power generation device of the present invention, in the solar cell module 15 in which the plurality of solar cell elements 16 (16a to 16e) are arranged in a planar shape as described above, each of these solar cell elements 16 (16a to 16e) is further provided. The light emitters 23 are disposed between the solar cell elements 16 so that the solar cell elements 16 are placed on the back surface, and the light emitters 23 emit light. Further, the plurality of solar cell elements 16 (16a to 16e) and the light emitters. A weather-resistant film 18 formed by forming light transmission holes H corresponding to the locations of the light emitters 23 is disposed between the light-emitting bodies 23 and the light-emitting bodies 23.

  As shown in FIG. 2, after the light irradiated from the light emitting body 23 passes through the light transmission hole H of the weather-resistant film 18, it is filled in the gaps 22 (22a to 22d) of the solar cell elements 16 (16a to 16e). The light-transmitting filler 19 and the light-transmitting plate 17 are further transmitted, and the light emission (luminance) of the light-emitting body 23 can be visually recognized. On the other hand, in the weather-resistant film 18 having the light transmission holes H, a light-shielding portion S is provided at an unnecessary portion of the light transmission holes H to achieve a light emission state as desired by the user.

  As an example, FIG. 3 shows a three-piece arrangement structure including a combination of a light emitter 23 and a light-shielding portion S, a weather-resistant film 18 formed by forming a light transmission hole H, and a solar cell module 15.

  As the light-shielding portion S used for this, for example, there is a synthetic resin material made of vinyl chloride (PVC), polyoffrene (PO), or the like. Then, natural rubber, synthetic rubber, and acrylic resin are included as an adhesive material to prevent the adhesive component from sticking to the other party.

  Therefore, it becomes detachable with respect to the weather-resistant film 18 by using the light shielding part S of such a material. Then, the light-shielding portion S may be removed from the required light-transmitting holes among these light-transmitting holes, and the light-transmitting holes H may be arranged corresponding to the positions where the light emitters 23 are disposed.

  Another example will be described with reference to FIGS.

  By being the solar cell module 15 in which a plurality of solar cell elements 16 (16a to 16e) are arranged in a matrix, the gaps 22 between the solar cell elements 16 (16a to 16e) are in a lattice shape as shown in FIG. (Shaded area in the figure). FIG. 5 is a plan view of the weather resistant film 18 used in the configuration shown in FIG.

  According to the solar cell module 15 relating to the solar power generation device having such a configuration, the light emitters 23 may be arranged at any position with respect to the lattice-shaped gaps 22, thereby obtaining desired display and decoration. It was.

  Moreover, in the light-emitting body 23 for display and decoration, the brightness | luminance became high by arrange | positioning the non-light-emitting solar cell element 16 (16a-16e) on the back surface of the light emission. In particular, the blue and dark blue solar cell elements 16 are arranged on the back side of the light emission, so that the luminance becomes remarkable.

  Furthermore, according to the lattice-shaped gap 22 as described above, since light emission and external light of the light emitter 23 are blocked by the light shielding portion S in a region other than the portion where the light emitter 23 is disposed, The brightness can be further increased.

  According to the present invention, the weather-resistant film 18 and the light-shielding portion S as described above are made, for example, gray or blackish in order to increase the luminance of the light-emitting body 23, so that the light-emitting body 23 is compared with such a region. The brightness of becomes even more remarkable.

  In the solar cell module 15 having the structure in which the gap 22 is provided between the solar cell element 16 and the frame body 21, the light emitter 23 is also disposed in the gap 22, thereby further improving display properties and decoration. You may increase the nature.

  This point will be described with reference to FIG.

  6 is a cross-sectional view taken along a cutting plane line AA and a cross-sectional view taken along a cutting plane line BB shown in FIG. 4. FIG. 6 shows both main parts in one cross-sectional view.

  6, for the sake of convenience, the light shielding portion S is not shown in order to show the light entry path with respect to the light transmission hole H. However, as shown in FIG. On the other hand, a light shielding portion S is provided to block light.

  As apparent from the configuration shown in FIG. 6, according to the optical path of the external light, the external light indicated by the arrow (broken line) passes through the light transmission plate 17 and is then blocked by the solar cell element 16 and below the gap 22. As a result, a darker part than the surroundings is created on the front surface of the light emitter 23 in the gap 22, and as a result, contrast is generated and the light emitted from the light emitter 23 can be viewed more brightly. .

  Moreover, since the light-shielding part S is provided for the light transmission hole H of the weather-resistant film 18, a darker part than the surroundings is created on the front surface of the light emitter 23, and the light emission of the light emitter 23 is reduced. Thus, the brightness can be further increased, and as a result, the contrast becomes remarkable and the light emitted from the light emitter 23 can be viewed more brightly.

  As described above, when there is extraneous light during the daytime or the like, the light emission is weakened only by the luminance of the light emitter 23. However, as in the present invention, a light shielding object (solar cell in the present invention) is placed in front of the light emitter 23. By providing the element 16, the weather resistant film 18, and the light shielding portion S), light emission of the light emitter 23 becomes remarkable. Therefore, the brightness can be improved without increasing the quantity of the light emitters 23, thereby reducing the number of parts and reducing the power consumption.

  For reference, if it is assumed that there is no light-shielding object in front of the light emitter 23, that is, normally, in order to efficiently extract the light emitted by the light emitter such as an LED or a light bulb to the outside, the light emitter. It is conceivable that a cover made of a transparent or translucent glass material or a resin material is provided around the periphery.

  However, when receiving daylight sunlight, etc., the illuminant is illuminated with sunlight, and the illuminance of the entire illuminant increases, so that the light emission between the illuminant and the ambient brightness The difference is reduced, and as a result, the contrast is lowered, and in the case of a structure having a reflecting mirror surface in the light emitting part such as an LED, sunlight (including scattered light) having a luminance higher than the light emission luminance of the LED is also present. It will reflect, and visibility will fall further.

  Thus, according to the solar power generation device of the present invention, as in the solar cell module 15 having the above-described configuration, a light-shielding sheet or light-shielding plate formed by forming the light transmission holes H is disposed. A light shielding portion S is provided for unnecessary portions so as to block the light, and the light transmitting holes H are arranged corresponding to the arrangement portions of the light emitters 23. A light-shielding sheet or a light-shielding plate having a light transmission hole H formed so as to arrange a free light-shielding part S is provided, and the light-shielding part S is attached to a required light transmission hole H among these light transmission holes H. The light transmission hole H may be arranged corresponding to the arrangement part of the light emitter 23.

  Moreover, according to this invention, the effect is notably show | played in the installation form that the back side of a solar power generation device or a solar cell module is open | released.

  That is, as shown in FIG. 7, the solar power generation device (solar cell module 15) of the present invention and a gantry K for fixing the solar power generation device, and further such a solar power generation device (solar cell module). 15) is attached to the gantry K so that light is incident from the lower side, and the disturbance light is visually recognized on the surface through the light transmission hole on the back surface of the solar cell module by the reflection of light as indicated by an arrow. Therefore, it is possible to effectively solve such problems.

  Furthermore, according to the present invention, when such a light-shielding sheet (weather-resistant film 18) or a light-shielding plate is provided, a light-shielding portion is provided to shield light from unnecessary portions of these light transmission holes H. S is provided so that the light transmission hole H is arranged corresponding to the arrangement part of the light emitter 23, or the light transmission hole H formed so as to arrange the removable light shielding part S is formed. By using a light-sensitive sheet or a light-shielding plate, the light-shielding portion is removed from the required light-transmitting holes among these light-transmitting holes, and the light-transmitting holes are arranged corresponding to the locations of the light emitters. As a result, display and decoration according to various requests can be obtained, and versatility is enhanced. When the user desires to change the light emission position at a later date, it can be applied to such a response.

  Next, wiring to the light emitter 23 of the solar power generation device will be described with reference to FIG.

  In the same figure, as shown in FIG. 9, the solar power generation device of the present invention is arranged on the roof of the house 1 or the like.

  In the solar power generation apparatus having the solar cell module 15 (15a to 15d), the power transmission cable 24 (24a to 24d) or the connection box 6 routed to the connection box 6 from the roof of the house is connected to the power conditioner 7. In addition to the power transmission cable 25, a power transmission line 26 that supplies power to the light emitter 23 is further provided.

  Specifically, AC power from the commercial power system 27 is sent to the lighting control circuit 28, and further, power for lighting (or blinking) the light emitter 23 is sent from the lighting control circuit 28 through the power transmission line 26.

  According to such a configuration, since a dedicated power line is used for supplying power to the light emitter 23, the light emitter 23 may be driven by direct current or driven by alternating current.

  Therefore, the light emitter 23 can be easily changed from a light bulb to an LED or vice versa.

  In this example, power is taken from the commercial power system 27, but instead of this commercial power system, the power is generated from the generated power of the solar cell if it is a direct current power source such as a battery or a fuel cell, or light emission in the daytime. You may make it take.

  Next, the present inventor used a color difference meter manufactured by Minolta Co., Ltd., placed on the light receiving surface of the solar power generation device of the present invention, turned on the light source in the daytime, and measured the luminance.

  In this example, by setting the arrangement of the color difference meter on the light-emitting body 23 that emits light and on the solar cell element 16, the respective luminances were obtained and the contrast was evaluated.

  According to this evaluation result, it has been found that the contrast becomes remarkably high, and thereby excellent display properties and decorative properties can be obtained even in the daytime.

  The present inventor, as described above, is an example of a solar power generation apparatus using solar cell modules 15a, 15b, 15c, and 15d in which a plurality of solar cell elements 16 (16a to 16e) are arranged in a matrix ( Examples 1) to (Example 4) will be described. Examples of these are shown in FIGS.

  Further, an example of a solar power generation apparatus using a solar cell module 15e in which a plurality of solar cell elements 16 (16a to 16e) are arranged in a staggered manner will be described in (Example 5). An example of this is shown in FIG. Each of these figures is a front view of the photovoltaic power generation apparatus.

(Example 1)
This example is shown in FIGS.

  In FIG. 12, the solar power generation device of the present invention is constituted by one solar cell module 15a, and a plurality of characters and numbers are displayed in one solar cell module by a display method such as 7 segments.

  According to this solar power generation device (solar cell module 15 a), a plurality of solar cell elements 16 are arranged in a matrix, and the main body of the solar cell module 15 a is supported by the frame body 21. FIG. 19 shows a light shielding sheet or light shielding plate and a light shielding part S used for this.

  And the light-emitting body 23 is arranged in the clearance gap 22 between these solar cell elements 16, and it lights according to a required display.

  According to the solar cell module 15a of the solar power generation device having the above-described configuration, the light emitters 23 are arranged along the gaps 22 with respect to the lattice-like gaps 22 to display seven segments.

  FIG. 12 displays the date and time. The date “12th” is shown in the upper part of the solar cell module 15a, and the time “19:00” is shown in the lower part.

  In these notations, light emitters are arranged according to a display method such as 7 segments, and according to this example, light emission of the light emitters 23 is indicated by black dots.

  Thus, according to the solar power generation device of the present invention, the brightness of the 7-segment display illuminant 23 is increased by disposing the non-light-emitting solar cell element 16 on the back side of the light emission. In particular, since the blue and dark blue solar cell elements 16 are arranged on the back side of the light emission, the luminance becomes remarkable even in the daytime.

  In addition, although it is set as the solar cell module which has the frame 21 in this example, it is good also as an attachment structure which abolishes a frame and is fixed to a support member with a fixed cover etc.

(Example 2)
This example is shown in FIGS.

  According to the solar power generation device shown in FIG. 13, a plurality of solar cell modules 15b are arranged, and individual letters, numbers, alphabets, and the like are written in each solar cell module 15b. FIG. 20 shows a light shielding sheet or light shielding plate and a light shielding part S used for this.

  In this example, it is constituted by four solar cell modules 15b and expressed as “KOBE”.

  According to this solar power generation device, four solar cell modules 15b in which a plurality of solar cell elements 16 are arranged in a matrix are arranged, and each of the solar cell modules 15b has a light emitter corresponding to display characters. 23 placement sites are fixed.

  Thus, according to the solar power generation device of the present invention, the non-light-emitting solar cell element 16 is arranged on the back surface of the light emitting body 23 arranged corresponding to the display characters, thereby increasing the luminance. . In particular, since the blue and dark blue solar cell elements 16 are arranged on the back side of the light emission, the luminance becomes remarkable even in the daytime.

(Example 3)
This example is shown in FIGS.

  According to the photovoltaic power generation apparatus shown in FIG. 14, a plurality of solar cell modules 15c are arranged, and one letter, number, alphabet, etc. are written on these. FIG. 21 shows a light-shielding sheet or light-shielding plate and a light-shielding part S used for this.

  In this example, a plurality of solar cell elements 16 are constituted by two solar cell modules 15c arranged in a matrix, and are expressed as “K”. In addition, the arrangement | positioning site | part of the light-emitting body 23 is fixed corresponding to the display character.

  Thus, according to the solar power generation device of the present invention, the non-light-emitting solar cell element 16 is arranged on the back surface of the light emitting body 23 arranged corresponding to the display characters, thereby increasing the luminance. . In particular, since the blue and dark blue solar cell elements 16 are arranged on the back side of the light emission, the luminance becomes remarkable even in the daytime.

  In the solar power generation device of this example, displaying one character across the plurality of solar cell modules 15c facilitates display of complicated Chinese characters and the like.

  Also, in this example, the frame body is eliminated and the mounting structure is fixed to the support member with a fixed cover or the like, but with this structure, characters of a plurality of solar cell modules can be seen continuously, and the text can be Suitable for making.

(Example 4)
In the solar power generation devices of (Example 1) to (Example 3) described above, a rectangular solar cell module is used, but instead of this, a solar power generation device using a triangular solar cell module is shown in FIG. Will be explained.

  According to the photovoltaic power generation apparatus shown in the figure, a plurality of solar cell elements 16 are arranged in a matrix for one triangular solar cell module 15d, and the solar cell is further provided with a frame 21. The main body of the module 15d is supported.

  In addition, in the same figure, the arrangement | positioning site | part of the light emitter 23 is abbreviated.

  Thus, according to the solar power generation device of the present invention, the non-light-emitting solar cell element 16 is disposed on the rear surface of the light emission with respect to the light-emitting body 23 having a display property and a decorative property. In particular, since the blue and dark blue solar cell elements 16 are arranged on the back side of the light emission, the luminance becomes remarkable even in the daytime.

  Moreover, in the solar power generation device of this example, by using the triangular solar cell module 15d, the display performance is improved, the decorativeness is improved, and it can be applied to various functions.

(Example 5)
In the solar power generation devices of (Example 1) to (Example 3) described above, a rectangular solar cell module is used, but instead of this, as shown in FIG. 16, a circular solar cell module 15e is manufactured. Further, a plurality of solar cell elements 16 are arranged in a staggered pattern, and the main body of the solar cell module 15 e is supported by the frame body 21.

  In addition, in the same figure, the arrangement | positioning site | part of the light emitter 23 is abbreviated.

  Thus, according to the solar power generation device of the present invention, the non-light-emitting solar cell element 16 is disposed on the rear surface of the light emission with respect to the light-emitting body 23 having a display property and a decorative property. In particular, since the blue and dark blue solar cell elements 16 are arranged on the back side of the light emission, the luminance becomes remarkable even in the daytime.

  Moreover, in the solar power generation device of this example, by using the circular solar cell module 15e, the display performance is improved, the decorativeness is improved, and it can be applied to various functions.

(Example 6: Comparative example)
This example is shown in FIGS.

  FIG. 17 is a perspective view of a solar cell module 29 used in the solar power generation apparatus of this example, and FIG. 18 is an enlarged cross-sectional view of the main part thereof.

  According to this example, as described above, in the solar cell module 15 having the above-described configuration, the light emitters 23 are not disposed between these solar cell elements 16, and as shown in FIG. A plurality of solar cell modules 29 in which the light emitters 23 are arranged on the outside of 16 were produced.

  For example, in the case where it is disposed only between the solar cell modules 29, the light emitter 23 is disposed on the light transmission plate 17, as shown in FIG.

  According to the solar power generation device having such a configuration, each solar cell module 29 is irradiated with sunlight as indicated by an arrow and reflected so that the solar cell module 29 also has a high height around the light emitter 23 and inside the light emitter 23. A luminance portion is created, but with such a high luminance portion, the light emitter 23 is illuminated by the emitted light.

  Thus, according to the solar power generation device of this example, the non-light emitting solar cell element 16 is disposed on the back surface of the light emission as in the present invention by arranging the light emitter 23 outside the matrix solar cell element 16. Thus, the luminance cannot be improved.

  In addition, according to this example, the light emitters 23 are arranged on the light transmission plate 17 so that the light emitters 23 are illuminated as described above. However, the brightness of the light-emitting body 23 cannot be improved by not being close enough to increase the contrast.

(Example 7)
In the solar power generation device of this example, the arrangement of the light emitters 23 is arranged on the light receiving surface side, that is, the light emitters 23 as shown in FIG. Is disposed on the light transmission plate 17. Other configurations are as shown in these examples.

  By arranging the light emitters 23 on the light transmission plate 17 in this manner, the light emitters 23 are illuminated. On the other hand, the light emitters 23 are placed between the solar cell elements 16 with the solar cell elements 16 in the back. By arranging, the color tone of the solar cell element 16 becomes the back surface, and the luminance of the light emitter 23 can be increased, and the contrast can be improved by such luminance improvement.

  In addition, according to the solar cell element used in the present invention, the luminance of the solar cell element 16 of blue or dark blue is arranged on the back surface of the light emission, so that the luminance becomes remarkable even in the daytime. Instead of the present invention, the present inventor has confirmed by experiment that even if solar cell elements exhibiting brown, red, amber, black, gray, green, gold, purple, magenta, etc. are used, the effects of the present invention can be obtained.

  It should be noted that the present invention is not limited to the above embodiment, and various modifications and improvements can be made without departing from the scope of the present invention.

  For example, in the solar power generation devices of (Example 4) and (Example 7), a triangular solar cell module is used, but instead of this, a trapezoidal shape or a polygonal shape may be used.

  Furthermore, in the solar power generation devices of (Example 5) and (Example 7), a circular solar cell module is used, but instead of this, an elliptical shape may be used.

  Furthermore, in the solar power generation apparatuses of (Example 1) to (Example 4), the solar cell elements 16 are arranged in a matrix, but instead of this, they may be arranged in a staggered pattern, or (Example 5) In the solar power generation apparatus, the solar cell elements 16 are arranged in a staggered pattern, but may be arranged in a matrix instead. The arrangement of the photovoltaic power generation apparatus of (Example 7) may be similarly changed.

It is a schematic sectional drawing which illustrates typically the solar cell module of the solar power generation device of this invention. It is a principal part enlarged view of the solar cell module which concerns on this invention. FIG. 3 is a perspective view showing a three-part arrangement structure of a combination of a light emitter and a light shielding portion according to the present invention, a light shielding sheet or light shielding plate formed with a light transmission hole, and a solar cell module. It is a front view which shows the area | region which can attach the light-emitting body in the solar cell module which concerns on this invention. It is a front view of the light-shielding sheet or light-shielding plate which concerns on this invention. In the solar cell module of the solar power generation device of this invention, it is a partially transparent figure explaining the mode of the light reflection state of external light, and the mode of the light transmission by a light transmission hole. It is a perspective view which shows the solar energy power generation system of this invention. It is a wiring diagram explaining the wiring to the light-emitting body which concerns on the solar power generation device of this invention. It is the perspective view which has arrange | positioned the solar power generation device of this invention on the roof of a house. It is a schematic sectional drawing of the solar cell module which concerns on the conventional solar power generation device. It is a schematic sectional drawing of the solar cell module which concerns on the other conventional solar power generation device. It is a front view which shows a display example in the solar cell module which concerns on the solar power generation device of this invention. It is a front view which shows the other example of a display in the solar cell module which concerns on the solar power generation device of this invention. In the solar cell module which concerns on the solar power generation device of this invention, it is a front view which shows the other example of a display. In the solar cell module which concerns on the solar power generation device of this invention, it is a front view which shows a triangular-shaped solar cell module. In the solar cell module which concerns on the solar power generation device of this invention, it is a front view which shows a circular solar cell module. It is a perspective view of the solar cell module used for the solar power generation device of a comparative example. It is a principal part expanded sectional view of the solar cell module used for a solar power generation device. It is a top view which shows an example of a light-shielding sheet or a light-shielding plate. It is a top view which shows an example of a light-shielding sheet or a light-shielding plate. It is a top view which shows an example of a light-shielding sheet or a light-shielding plate.

Explanation of symbols

2 ... Solar power generation devices 4, 15, 15a, 15b, 15c, 15d, 15e ... Solar cell modules 8, 16, 16a, 16b, 16c, 16d, 16e ... Solar cell elements 9, 17, ..Light transmission plates 11, 21 ... Frame 18 ... Weather-resistant film 19 ... Filler 20 ... Junction boxes 22, 22a, 22b, 22c, 22d ... Gap 23, 23a, 23b , 23c, 23d, 23e ... luminous body S ... light shielding part H ... light transmission hole

Claims (7)

A plurality of solar cell elements are arranged in a plane, and a light emitter is disposed on the side opposite to the light receiving surface between the solar cell elements so that the light emitter emits light through a gap between adjacent solar cell elements. A light-shielding sheet or a light-shielding plate formed by forming a light transmission hole between a plurality of solar cell elements and a light emitter, and further, unnecessary portions of these light transmission holes On the other hand, a solar power generation apparatus characterized in that a light shielding portion is provided to block light and a light transmission hole is arranged corresponding to the arrangement portion of the light emitter. A plurality of solar cell elements are arranged in a plane, and a light emitter is disposed on the side opposite to the light receiving surface between the solar cell elements so that the light emitter emits light through a gap between adjacent solar cell elements. A light-shielding sheet or a light-shielding plate having a light transmission hole formed so as to dispose a removable light-shielding portion between the plurality of solar cell elements and the light emitter, and A solar power generation apparatus characterized in that a light-shielding portion is removed from a required light-transmitting hole among these light-transmitting holes, and a light-transmitting hole is arranged corresponding to the location of the light emitter. The solar power generation apparatus according to claim 1 or 2, wherein the plurality of solar cell elements are arranged in a matrix. The solar power generation apparatus according to claim 1 or 2, wherein the plurality of solar cell elements are arranged in a staggered manner. The solar power generation device according to any one of claims 1 to 4, further comprising a frame body that supports the solar cell module and the solar cell module. 6. The solar power generation device according to claim 1, wherein the light emitter is an LED. A solar power generation device according to any one of claims 1 to 6 and a gantry for fixing the solar power generation device, and further the gantry so that light is incident on the solar power generation device from below. A solar power generation system characterized by being attached to

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