JP2005079169A - Solar power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar power generation device which is improved in contrast to an indication or decorations by a light emitting body. <P>SOLUTION: The solar power generation device is equipped with solar battery modules 15 which are each composed of a plurality of solar battery elements 16 arranged in a two-dimensional manner, and light emitting bodies 23 each arranged between the solar battery elements 16 where the light emitting bodies 23 are made to emit light by making their rear sides confront the solar battery elements 16. Furthermore, a light shading member S is arranged between the solar battery elements 16 and the light emitting bodies 23. <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.

  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. 6 shows a case where the solar power generation device 2 is arranged on the roof of the house 1, and FIG. 7 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. 6, 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. 7, reference numeral 8 denotes a solar cell element, which is configured to obtain electric power by utilizing 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 the 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) is provided 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. 8 shows a configuration in which an LED is provided at the end of the 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.

  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 further, a light shielding hole formed between the plurality of solar cell elements and the light-emitting body so as to correspond to a portion where the light-emitting body is disposed. A characteristic sheet or a light shielding plate is provided.

  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 body 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.

  According to the solar power generation device of the present invention, as described above, a plurality of solar cell elements are arranged in a planar shape, and a light emitter is disposed between these solar cell elements. The color tone such as the back increases the brightness of the light emitter and improves the contrast.

  Further, according to the present invention, between the solar cell element and the light emitter, a light shielding sheet or a light shielding plate formed by forming a light transmission hole corresponding to the arrangement portion of the light emitter, Light irradiation can be narrowed by such a light transmission hole, and accordingly the luminance can be further increased.

  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 into a triangular shape, a rectangular shape, a trapezoidal shape or a polygonal shape, or a circular shape. Alternatively, the appearance can be changed to various shapes by making it oval, and display properties and decorative properties can be obtained by arranging these light-emitting elements between the solar cell elements with the appearance as the back.

  As described above, according to the solar power generation device of the present invention, as described above, a plurality of solar cell elements are arranged in a planar shape, and a light emitter is disposed between the solar cell elements with the solar cell elements on the back surface. By arranging, the color tone of the solar cell element became the back surface, and the luminance of the luminous body was increased and the contrast could be improved.

  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.

  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.

  Hereinafter, an embodiment of a solar power generation device according to the present invention will be described in detail based on the drawings schematically shown.

  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. It is a top view which shows the area | region (it shows with a shaded part in the figure) which can be attached.

  FIG. 4 is a partial perspective view for explaining a state in which extraneous light is blocked by the solar cell element in the solar cell module 15 of the photovoltaic power generation apparatus of the present invention. FIG. 5 is a wiring diagram for explaining wiring to the light emitter of the photovoltaic power generation apparatus according to the present invention.

  Also in the solar power generation device of the present invention, for example, as shown in FIG. 6, the solar power generation device is arranged on the roof of the house 1.

  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 transmissive Teflon (R) film or PVF (polyfluoric film) is provided on the other non-light receiving surface (back surface). A weather resistant film 18 such as vinyl chloride or PET (polyethylene terephthalate) is applied. Instead of using such a synthetic resin material, a glass plate may be used.

  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.

  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 light-shielding sheet or a light-shielding plate formed by forming a light transmission hole H is disposed between the light-emitting body 23 and the light-emitting body 23.

  Hereinafter, the light shielding sheet or the light shielding plate is collectively referred to as a light shielding member S.

  When the light shielding member 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 member S is a light shielding plate, a metal plate, a ceramic plate or a synthetic resin plate having a light shielding property may be used.

  And the light transmission hole H is formed with respect to the light shielding member S of such a member corresponding to the arrangement site | part of the light-emitting body 23. FIG.

  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.

  In addition, 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), and the light transmission hole corresponding to the gap 22c (light emitter 23c). A light transmission hole Hd is arranged corresponding to the gap 22d (light emitter 23d).

  And these light-emitting bodies 23 (23a-23e) are attached on the light shielding member S with the adhesive member which consists of an acrylic type double-sided adhesive tape, an acrylic type adhesive agent, a silicon type adhesive material (resin), etc. 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.

  As shown in FIG. 2, after the light irradiated from the light emitter 23 passes through the light transmission hole H of the light shielding member S, the gap 22 (22a to 22d) of the solar cell element 16 (16a to 16e) is filled. The light-transmitting filler 19 is transmitted through the light-transmitting plate 17, and the light emission (luminance) of the light-emitting body 23 can be visually recognized.

  According to the present invention, the solar cell module 15 in which a plurality of solar cell elements 16 (16a to 16e) are arranged in a matrix form allows the gap 22 between the solar cell elements 16 (16a to 16e) to be as shown in FIG. As shown in FIG. 4, the shape is a lattice (the hatched portion in the figure). FIG. 16 is a plan view of the light shielding member S used in the configuration shown in FIG.

  Thus, according to the solar cell module 15 of the photovoltaic power generation apparatus of the present invention, the light emitters 23 may be arranged at any position with respect to the lattice-like gaps 22, thereby obtaining the required 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-like gap 22 as described above, since light emission of the light emitter 23 is blocked by the light shielding member S in a region other than the portion where the light emitter 23 is disposed, the luminance is further increased accordingly. Can be increased.

  According to the present invention, the light shielding member S as described above is made, for example, gray or blackish in order to increase the luminance of the light emitter 23, so that the luminance of the light emitter 23 can be further increased compared to such a region. It becomes even more prominent.

  In the solar cell module 15 having a configuration in which the gap 22 is provided between the solar cell element 16 and the frame body 21, the light emitter 23 is also arranged 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.

  4 is a cross-sectional view taken along the section line AA shown in FIG.

  According to FIG. 4 showing the optical path of the extraneous light, the extraneous light indicated by an arrow (broken line) passes through the light transmitting plate 17 and is then blocked by the solar cell element 16 so that the light hardly reaches below the gap 22. Thus, in the gap 22, a darker portion than the surroundings is created on the front surface of the light emitter 23, and as a result, contrast is generated, and the light emitted from the light emitter 23 can be viewed more brightly.

  In addition, since light emission of the light emitter 23 is reduced by the light transmission hole H of the light shielding member S, the luminance can be further increased accordingly.

  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 and the light shielding member 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.

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

  In the figure, as shown in FIG. 6, the case where the photovoltaic power generation apparatus of the present invention is arranged on the roof of the house 1 will be described.

  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. 9, 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. 17 shows a light shielding member 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. 9 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.

  Note that the lattice-shaped gaps 22 show the light-emitting bodies 23 that are lit at these black dots, but in addition to these, the non-light-emitting light-emitting bodies 23 are arranged, but are not specified.

  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. 10, a plurality of solar cell modules 15b are arranged, and individual letters, numbers, alphabets, and the like are described with each solar cell module 15b. FIG. 18 shows the light shielding member S.

  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. 11, a plurality of solar cell modules 15c are arranged, and one letter, number, alphabet, etc. are written on these. FIG. 19 shows the light shielding member S.

  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 was used. Instead, as shown in FIG. 13, a circular solar cell module 15e was 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. 14 is a perspective view of a solar cell module 29 used in the solar power generation apparatus of this example, and FIG. 15 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 the 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, when it is arranged only between the solar cell modules 29, the light emitter 23 is arranged 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 because it is not 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. 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. In the solar cell module shown in FIG. 3, it is sectional drawing by cutting plane line AA. 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 member. It is a top view which shows an example of a light-shielding member. It is a top view which shows an example of a light-shielding member. It is a top view which shows an example of a light-shielding member.

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 member H ... light transmission hole

Claims (7)

A plurality of solar cell elements are arranged in a plane, and a light emitter is arranged 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 corresponding to the location of the light-emitting body between the plurality of solar cell elements and the light-emitting body. A solar power generation device characterized by that. The solar power generation apparatus according to claim 1, wherein the plurality of solar cell elements are arranged in a matrix. The solar power generation device according to claim 1, wherein the plurality of solar cell elements are arranged in a staggered manner. The solar power generation apparatus according to any one of claims 1 to 3, further comprising a frame body that supports the solar cell module and the solar cell module. 5. The solar power generation device according to claim 1, wherein the solar cell module has a triangular shape, a rectangular shape, a trapezoidal shape, or a polygonal shape. The solar power generation apparatus according to any one of claims 1 to 4, wherein the solar cell module is circular or elliptical. The photovoltaic device according to any one of claims 1 to 6, wherein the light emitter is an LED.

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