JP2016066654A - Solar panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar panel which inhibits temperature increase of a back surface of a solar panel, in which solar cells are disposed on its surface, and inhibits deformation of the solar panel and dew condensation.SOLUTION: A first panel 3 on which solar cells 2 are disposed and configured to transmit light is formed. A space 4 is continuously disposed along a periphery part on a surface of the first panel 3, which is opposite to a surface receiving solar light. A second panel 5 which transmits the light is laminated on the first panel 3 through the spacer 4. A space 10 enclosed by the first panel 3, the second panel 5, and the spacer 4 is turned into an air-tight state.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a solar panel in which a solar cell is arranged and a part of sunlight can be transmitted through the back surface thereof.

  There has been proposed a solar panel that can generate electric power with a solar cell while allowing a part of sunlight to pass through and store electric power during the day, and can be used as illumination by using this electric power at night (for example, Patent Document 1, Patent) Reference 2).

  In the invention described in Patent Literature 1, a solar panel is configured by attaching a solar cell that transmits sunlight to a light-transmitting plate material formed of acrylic or the like. This solar panel can generate electric power on the surface of the solar panel on which the solar cell is installed, and can obtain a lighting effect on the back surface on which the edge light type double-sided translucent plate is installed.

  Patent Document 1 also discloses an example in which a solar panel formed by arranging solar cells that do not transmit sunlight on a light-transmitting plate member with a predetermined interval is used as a roof for a carport.

  By using these solar panels as a carport roof, power can be generated while directing sunlight below the carport roof during the day, and it can be used as a lighting fixture at night.

  Such a solar panel is heated by sunlight and may reach a temperature close to 80 ° C. Therefore, even if it can be used for a carport roof that is not touched by humans, it can be directly touched by human hands. It was not possible to install in such a place. Therefore, places where such solar panels can be used have been limited. For example, when it is considered to be installed in a window of a commercial facility, it is difficult to realize it because a user of the commercial facility may touch a solar panel that has become hot.

  Moreover, since the panel on which the solar cell is installed and the edge light type double-sided translucent plate are bonded together, the panel on which the solar cell is installed and the translucent plate expand as the temperature of the solar panel increases, and the expansion rate There is a possibility that it will be greatly curved due to the difference. When the solar panel is deformed, there is a possibility that the solar panel may be damaged or may be dropped from the frame on which the solar panel is fixed. Therefore, the member which comprises the panel in which the solar cell was installed, and the translucent board needed to be comprised with the material with a close expansion coefficient, and the selection range of material was limited.

  In the invention described in Patent Document 2, a solar panel is configured by detachably installing a panel on which a solar cell is installed and a light guide plate at intervals in a metal frame. When the temperature of the panel on which the solar cells are installed rises, the heat is transferred to the light guide plate through the metal frame, and both sides of the solar panel become hot, so that the human hand can touch them directly. Could not be installed.

  Further, dew condensation may occur between the panel where the solar cell is installed and the light guide plate. When condensation occurs, sunlight incident on the solar cell through the light guide plate is irregularly reflected by water droplets and power generation efficiency is reduced, or illumination light diffused outside from the LED light source through the light guide plate is irregularly reflected by water droplets. The amount of light is uneven. In addition, the presence of water droplets between the panel on which the solar cell is installed and the light guide plate over a long period of time also causes a problem of deteriorating the solar cell.

JP 2013-231351 A JP 2013-134967 A

  The present invention has been made in view of the above problems, and its purpose is to cause deformation and condensation of the solar panel while suppressing the temperature rise of the back surface of the solar panel with the solar cell disposed on the surface. It is providing the solar panel which can suppress this.

  In order to achieve the above object, a solar panel of the present invention includes a first panel on which a solar cell is disposed and transmits light, and a surface of the first panel opposite to a surface that receives sunlight. A spacer disposed continuously along a peripheral edge of the first panel; and a second panel laminated on the first panel through the spacer to transmit light, the first panel and the second panel. And a space surrounded by the spacer is hermetically sealed.

  According to the present invention, the second panel is not in direct contact with the first panel due to the configuration in which the second panel is stacked on the first panel on which the solar cell is disposed via the spacer and the airtight layer. Therefore, even if the solar cell of the 1st panel is heated with sunlight, it can control that this heat is transmitted and the 2nd panel becomes high temperature. Thereby, this solar panel can be used as building materials, such as a window of a building.

  Moreover, it can prevent that dew condensation generate | occur | produces between the 1st panel and the 2nd panel by the structure which makes an airtight state between the 1st panel and the 2nd panel. Since condensation can be prevented, it is advantageous for suppressing the deterioration of the solar cell.

  Since the first panel and the second panel are bonded via a spacer, compared to the case where the entire surface is bonded without using a spacer, the difference in expansion coefficient between the first panel and the second panel, It is advantageous to suppress the occurrence of warpage in the solar panel. Therefore, the range of materials that can be selected as the second panel can be increased.

  The second panel may be composed of a light diffusing plate that diffuses light incident thereon, and an illumination light source that allows light to enter the second panel may be arranged. Since the light from the illumination light source is diffused by the light diffusion plate, the second panel side can be used as illumination. In addition, since part of the light diffused from the light diffusion plate can pass through the first panel, the first panel side on which the solar cell is disposed can also be used as illumination. That is, this solar panel can be used as illumination on both sides.

  The first panel may be configured by a plurality of solar cells that do not transmit light and gap portions that are formed between adjacent solar cells and transmit light. The first panel can efficiently generate power with a solar cell while allowing sunlight or illumination light to pass through the gap.

  A lens may be disposed between the first panel and the second panel, and the lens may condense the light diffused from the light diffusion plate into the gap portion of the first panel. With this configuration, the illumination light can be efficiently collected in the gap portion of the first panel, so that the luminous intensity as illumination on the first panel side of the solar panel can be improved.

  A shutter member composed of an opening that transmits light and a shielding portion that blocks light is disposed between the first panel and the second panel, and the opening is opposed to the gap of the first panel. It can also be comprised so that a movement to an exposure position and the shielding position which makes a shielding part oppose the clearance gap part of a 1st panel is possible. By moving the shutter member, the first panel side of the solar panel can be turned on or off. That is, the shutter member can be used as a switch when the first panel side of the solar panel is used as illumination.

  A color filter may be disposed between the first panel and the second panel, and the color filter may be configured to be movable along the first panel. By moving the color filter, it is possible to change the color of the illumination light that is diffused from the light diffusion plate and irradiated to the first panel side from the gap portion of the first panel.

  The second panel may be formed of a flat plate that transmits light, or a flat plate that transmits a light by being embedded with a metal net or a reflective material that reflects light.

  The first panel may be laminated on both sides of the second panel via spacers, and each light receiving surface of the first panel may be formed outward in the surface direction. According to this configuration, power can be generated on both sides of the solar panel, and both sides can be used as a lighting fixture.

It is explanatory drawing which illustrates the solar panel of this invention. It is explanatory drawing which illustrates the state which decomposed | disassembled the solar panel shown in FIG. It is explanatory drawing which illustrates the solar panel shown in FIG. 1 in an AA cross section. It is explanatory drawing equivalent to FIG. 3 which illustrates different embodiment of a solar panel. It is explanatory drawing equivalent to FIG. 3 which illustrates embodiment which installed the lens in the 1st panel side. It is explanatory drawing which illustrates the shape of the lens shown in FIG. It is explanatory drawing which illustrates the modification of the lens shown in FIG. It is explanatory drawing which illustrates embodiment which installed the lens in the 2nd panel side. It is explanatory drawing which illustrates embodiment which installed the shutter member in the solar panel. It is explanatory drawing which illustrates the solar panel shown in FIG. 9 in a BB cross section. It is explanatory drawing which illustrates the state which moved the shutter member shown in FIG. 10 to the shielding position. It is explanatory drawing which illustrates the modification of the drive mechanism which moves a shutter member. It is explanatory drawing which illustrates the modification of a shutter member. It is explanatory drawing which illustrates embodiment which installed the color filter in the solar panel. It is explanatory drawing which illustrates the state which installed the some 1st panel with respect to one 2nd panel. It is explanatory drawing which illustrates the solar panel which receives sunlight and produces electric power on both surfaces.

  Hereinafter, the solar panel of the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIGS. 1 to 3, the solar panel 1 of the present invention includes a first panel 3 on which a plurality of solar cells 2 are disposed, and a surface on the side that receives sunlight SL of the first panel 3 (light reception). The spacer 4 is disposed on the surface opposite to the surface or the surface), and the second panel 5 is disposed so as to overlap the first panel 3 with the spacer 4 interposed therebetween.

In this embodiment, a plurality of solar cells 2 that do not transmit light are arranged on the first panel 3. The plurality of solar cells 2 are arranged adjacent to each other and arranged at predetermined intervals in the vertical direction. That is, a band-shaped gap 6 is formed between adjacent solar cells 2, and the solar cell 2 and the gap 6 are arranged in a stripe pattern (horizontal stripe pattern) on the first panel 3. For example, the vertical width of the strip-shaped solar cell 2 can be set to about 0.1 mm to 1.0 mm, and the vertical width of the strip-shaped gap 6 can be set to about 0.1 mm to 0.5 mm.

  Such a first panel 3 is formed by, for example, pasting crystalline silicon as a solar cell with a predetermined interval on a transparent member 7 as a base material, or forming a thin crystal of 100 μm or less on the transparent member 7, for example. The gap portion 6 can be formed by forming silicon and placing a cut.

  The shape and arrangement pattern of the solar cells 2 are not limited to the above, and a band-like solar cell 2 having the vertical direction as the longitudinal direction is formed, and the solar cells 2 and the gaps 6 are arranged in a stripe shape (vertical stripe shape). You can also Alternatively, the solar cells 2 may be formed in a substantially square or substantially rectangular shape, and the solar cells 2 may be arranged in a check shape by arranging the solar cells 2 in the vertical direction and the horizontal direction via the gaps 6 respectively. .

  As illustrated in FIG. 3, the plurality of solar cells 2 are arranged on a transparent member 7 that transmits light, and a cover glass 8 that transmits light is provided on a light receiving surface side that receives sunlight. That is, the first panel 3 includes a transparent member 7, a plurality of solar cells 2 disposed on the transparent member 7, and a cover glass 8 that covers the upper surface of the solar cell 2. In this embodiment, the transparent member 7 is composed of a conductor that conducts electricity, and the strip-like solar cells 2 arranged at intervals are electrically connected by the transparent member 7.

  Since the first panel 3 has the solar cell 2 arranged on the transparent member 7 with a predetermined interval (gap 6), the back side can be seen from the front side, so-called see-through type. This is called a panel. On the other hand, a thin film of a solar cell is formed on a base material made of glass or the like by a method such as sputtering, and a gap 6 is formed by making a cut in the thin film to form a so-called see-through panel. You can also. In addition, a see-through panel can be formed using the solar cell 2 that can transmit light. In this case, since the solar cell 2 itself transmits light, it is not necessary to form the gap 6.

  At the upper end portion of the first panel 3, a power extraction terminal 9 is provided for extracting electricity generated by the plurality of solar cells 2 to the outside. The position where the power extraction terminal 9 is installed is not limited to the above, and can be changed as appropriate.

  The electrical connection between the adjacent solar cells arranged via the gap 6 is not limited to the above. For example, a conductor such as copper is processed into a thin film shape, and the solar cells 2 are electrically connected to each other with the thin film conductor. It can also be configured to connect. Since the area occupied by the thin-film conductor is extremely small with respect to the entire first panel 3, the first panel 3 is a so-called see-through panel even with this configuration.

  As illustrated in FIG. 2, the second panel 5 is installed in a state parallel to the first panel 3 via the spacer 4. The 2nd panel 5 is comprised with the material which can permeate | transmit light and can form in flat form, for example, can be comprised with transparent plastic plates, such as an acrylic resin, and a glass plate. The material forming the second panel 5 is not limited to the above, and other materials may be used as long as they have a property of transmitting light. Here, the material having the property of transmitting light is not limited to a material that transmits light while substantially maintaining the straightness of incident light, but also includes a material such as ground glass that transmits incident light while refracting it.

  The spacer 4 protrudes on the surface opposite to the light receiving surface of the first panel 3 and is continuously arranged along the peripheral edge of the first panel 3. The spacer 4 is made of a material that does not allow air to pass, such as silicon rubber or synthetic resin, and the space 10 surrounded by the first panel 3, the spacer 4, and the second panel 5 is airtight as illustrated in FIG. That is, an airtight layer 10 is formed between the first panel 3 and the second panel 5.

  The spacer 4 is fixed to the first panel 3 and the second panel 5 with an adhesive or the like. A caulking material or the like may be applied in the vicinity of the boundary to increase the airtightness of the airtight layer 10. By forming the airtight layer 10 between the first panel 3 and the second panel 5, it is possible to prevent water vapor from entering between the panels and causing dew condensation. In this embodiment, the airtight layer 10 is filled with dry air with a low water vapor content. However, when other gas such as nitrogen gas or argon gas is sealed, there is almost no water vapor in the airtight layer 10. It can also be.

  This solar panel 1 can be installed in place of, for example, a building window. At this time, the solar panel 1 is arranged in such a direction that the first panel 3 is on the outdoor side and the second panel 5 is on the indoor side. As illustrated in FIG. 3, when sunlight SL is incident on the solar panel 1 from the outdoor side, part of the sunlight SL reaches the solar cell 2 and contributes to power generation, and the remaining part passes through the gap 6. Then, it passes through the transparent member 7 and the second panel 5 to reach the indoors.

  Therefore, when this solar panel 1 is installed as a building window, the sunlight SL can be taken indoors through the gap 6 during the day, and an outdoor scenery can be seen from the indoor.

  When sunlight SL is incident on the solar cell 2, the temperature of the first panel 3 rises together with the solar cell 2. However, the indoor-side second panel 5 is installed on the first panel 3 via the spacer 4 and the airtight layer 10 and is not in direct contact with the first panel 3. Therefore, it can suppress that the heat of the 1st panel 3 is transmitted and the 2nd panel 5 becomes high temperature. By forming the spacer 4 with a material that is difficult to transfer heat, the temperature rise of the second panel 5 can be further suppressed.

  Since the temperature rise of the second panel 5 on the indoor side can be suppressed, even if the solar panel 1 is installed in place of a building window that may be touched directly by the person from the indoor side, safety is ensured. This is advantageous because it can be secured. Therefore, the solar panel 1 can be used as a glass building material in a wide range of fields such as a handrail window on a veranda, a fence on a roof of a building, and a sunroof for an automobile, in addition to a building window.

  Since the airtight layer 10 is provided between the first panel 3 and the second panel 5 to prevent condensation and the like, sunlight SL is reflected indoors by the water droplets generated in the airtight layer 10 due to condensation. It is possible to avoid a state in which sunlight SL cannot be efficiently taken in, a state in which it is difficult to see indoors and outdoors, and a state in which the aesthetics of the solar panel 1 are impaired. Further, moisture is present in the vicinity of the solar cell 2 for a long period of time, and it is advantageous for suppressing the corrosion and deterioration of the solar cell 2 due to this moisture.

  Since only a part of the first panel 3 and the second panel 5 are bonded via the spacer 4, even if the thermal expansion coefficients of the first panel 3 and the second panel 5 are greatly different. It is possible to prevent the solar panel 1 from being bent and the first panel 3 and the second panel 5 from being peeled off. Thereby, even when the solar panel 1 is fitted and installed in a window frame or the like, it is advantageous for suppressing an accident that the solar panel 1 is broken or dropped from the window frame due to bending. Become. Therefore, the range of materials that can be selected as the second panel 5 can be dramatically increased.

  If the spacer 4 is made of a deformable material, the deformation of the first panel 3 and the second panel 5 can be easily absorbed by the deformation of the spacer 4, so that the types of materials that can be selected as the second panel 5 can be further increased. it can. Moreover, since it is easy to absorb the difference in coefficient of thermal expansion between the first panel 3 and the second panel 5, it is possible to manufacture the solar panel 2 having a complicated shape such as a shape having a curved surface as well as a flat plate.

  When the entire surface of the first panel 3 and the second panel 5 is bonded without the spacer 4, the solar panel 1 can be greatly curved even when the thermal expansion coefficients of the two panels are slightly different. There is sex. Further, when an adhesive is applied and bonded to the entire surface of the first panel 3 and the second panel 5, air bubbles or the like may be mixed between the panels to impair the aesthetics. Such a situation does not occur in the optical panel 1.

  If the 2nd panel 5 is made into the glass containing the net | network etc. which embed | buried metal net etc., the solar panel 1 can also be used as a skylight etc. of a house. There is a place where only glass with glass can be installed in a glass installed in a building in order to prevent the glass from scattering when a fire or the like occurs. Even in such a place, the solar panel 1 of the present invention can be installed by appropriately selecting the material of the second panel 5.

  As illustrated in FIG. 4, in this embodiment, the second panel 5 is composed of a light diffusing plate 5, and an illumination light source 11 such as an LED is installed in the vicinity of the upper end surface of the light diffusing plate 5. . The light diffusing plate 5 can irradiate light from the entirety of the light diffusing plate 5 by reflecting incident light inside. The light diffusing plate 5 is formed, for example, by attaching a film that diffuses light on a transparent acrylic plate or glass plate, or by embedding a reflecting material that reflects light inside the transparent plate. You can also. This film or reflector may be installed on the entire acrylic plate or the like, or may be installed partially. Further, the surface of a glass plate or the like can be processed to form fine irregularities, and it can be formed of so-called ground glass that transmits light while refracting light.

  When the light diffuser 5 is irradiated with the illumination light RL from the illumination light source 11, the illumination light RL travels while reflecting inside the light diffuser 5, and from the entire light diffuser 5, particularly from the front and back surfaces of the light diffuser 5. Irradiated outside. Since the 2nd panel 5 side (indoor side) of the sunlight panel 1 light-emits with illumination light RL, it can be used as a lighting fixture with a high production effect.

  Further, a part of the light diffused from the light diffusion plate 5 to the outside passes through the gap 6 between the solar cells 2 and diffuses to the first panel 3 side of the solar panel 1, so that the first panel 3 side (Outdoor side) can also be used as a lighting device with a high production effect. That is, the solar panel 1 can also emit light on the light receiving surface side of the sunlight SL, and can be used as a lighting fixture. Here, when the solar cell 2 that transmits light is disposed on the first panel 3, the light receiving surface side can emit light through the solar cell 2.

  For example, when this solar panel 1 is used as a window, the illumination light RL can be irradiated both indoors and outdoors, and both surfaces of the solar panel 1 can be used as a lighting fixture. For example, when the solar panel 1 is installed in a window of a house, the solar panel 1 can be used as illumination for illuminating a room facing the light diffusing plate 5, and as night illumination for a garden facing the first panel 3. Can also be used.

  When the solar cell 2 that does not transmit light is disposed on the first panel 3, a configuration may be adopted in which a plurality of lenses 12 are disposed in the airtight layer 10 between the first panel 3 and the second panel 5. it can. In the embodiment illustrated in FIG. 5, a plurality of lenses 12 formed in a planar shape on the first panel 3 side and a curved surface on the second panel 5 side is the surface of the first panel 3 and corresponds to the gap 6. Each is installed in a position.

  This lens 12 has a function of condensing the illumination light RL irradiated from the light diffusion plate 5 to the first panel 3 side through the airtight layer 10 and condensing it in the gap 6 of the first panel 3. ing. The lens 12 is desirably formed to have a size covering the gap 6 or larger. As the shape of the lens 12, for example, a belt-like lens 12 that covers the belt-like gap 6 as illustrated in FIG. 6 can be adopted. The lens 12 is formed in a shape obtained by cutting a cylinder along its axial direction, and is bonded to a surface of the transparent member 7 facing the airtight layer 10 with a transparent adhesive or the like that transmits light.

  The shape of the lens 12 is not limited to the above, and it is sufficient that the illumination light RL diffused from the light diffusing plate 5 to the airtight layer 10 side is condensed in the gap 6. For example, as illustrated in FIG. 7, a plurality of lenses 12 whose bottom surfaces are circular planes may be arranged so as to cover the gaps 6 between the strip-shaped solar cells 2. Alternatively, one or a plurality of lenses 12 having a plurality of focal points may be arranged.

  As illustrated in FIG. 8, the lens 12 may be installed on the surface of the light diffusing plate 5 that faces the airtight layer 10. The lens 12 is formed in a planar shape on the second panel 5 side and a curved surface on the first panel 3 side, and the illumination light RL reaching the lens 12 via the light diffusion plate 5 is condensed in the gap 6. It has the composition to do. For example, the lens 12 can be formed in a shape having a focal point in the vicinity of the gap 6.

  By installing the lens 12, the amount of the illumination light RL that is irradiated from the light diffusion plate 5 to the airtight layer 10 side and collides with the back surface of the solar cell 2 is reduced, and this illumination light RL is actively collected in the gap 6. Since it can irradiate and can irradiate efficiently the light-receiving surface side (outdoor side) of the solar panel 1, the luminous intensity of the light-receiving surface side can be improved.

  As illustrated in FIGS. 9 to 11, in this embodiment, the shutter member 13 is disposed close to the surface of the first panel 3 on the airtight layer 10 side. The shutter member 13 includes an opening 14 that transmits light and a shielding part 15 that shields light, and the shielding part 15 is formed to have a size that can cover the gap 6.

  In this embodiment, the opening 14 and the shielding portion 15 of the shutter member 13 are arranged in a horizontal stripe pattern in a state corresponding to the solar cells 2 and the gaps 6 arranged in a horizontal stripe pattern. The vertical width of the gap 6 and the vertical width of the shield 15 may be the same length. In this embodiment as well, the first panel 3 is provided with a solar cell 2 that does not transmit light. A plurality of illumination light sources 11 are arranged along the upper end of the second panel 5.

  A shutter-side magnet 16 is installed at the upper end of the shutter member 13, and an operation magnet 17 corresponding to the shutter-side magnet 16 is installed on the cover glass 8 of the first panel 3. By moving the operation magnet 17, the shutter member 13 disposed in the airtight layer 10 of the solar panel 1 is moved in the vertical direction along the first panel 3 while maintaining the airtight state of the airtight layer 10. Can be made. The shutter side magnet 16 and the operation magnet 17 are made of permanent magnets, for example.

  As illustrated in FIG. 10, the shutter member 13 is a position where the opening 14 faces the gap 6 between the adjacent solar cells 2, and an exposure position through which the illumination light RL and sunlight SL can pass. As illustrated in FIG. 11, the shielding portion 15 is configured to be movable between a shielding position that covers the gap portion 6 and shields the illumination light RL and the like.

  As illustrated in FIG. 10, when the shutter member 13 is moved to the exposed position, sunlight SL irradiated on the light receiving surface of the solar panel 1 can be transmitted indoors during the daytime. At night, the illumination light RL emitted from the light diffusing plate 5 can be applied to the light receiving surface side (outdoor side) of the solar panel 1, so that the light receiving surface side of the solar panel 1 can be used as a lighting fixture. it can.

  As illustrated in FIG. 11, when the operation magnet 17 is moved downward, for example, and the shutter member 13 is moved to the shielding position, the sunlight SL irradiated on the light receiving surface is transmitted indoors during the daytime. Can be prevented. When the solar panel 1 is installed instead of a skylight or the like, it can be used as a substitute for a light-shielding curtain when the sunlight is strong during the day and it is not desired to raise the indoor temperature.

  At night, the illumination light RL emitted from the light diffusing plate 5 is not leaked to the light receiving surface side (outdoor side) of the solar panel 1, so the indoor side of the solar panel 1 is used as illumination, but the outdoor side is used as illumination. This is advantageous when you do not want to use it. For example, when the solar panel 1 is installed in the window of a commercial facility and the store is closed, it can be used when it is desired to work in the store.

  The shutter member 13 is stopped halfway between the shielding position and the exposure position, a part of the gap 6 is covered with the shielding part 15, and the amount of sunlight SL or illumination light RL passing through the gap 6 is adjusted. You can also. Thereby, the quantity of sunlight SL taken in indoors and the quantity of illumination light RL irradiated outdoors can be determined arbitrarily.

  The configuration for moving the shutter member 13 is not limited to the shutter-side magnet 16 and the operation magnet 17. What is necessary is just the structure which can move the shutter member 13 arrange | positioned in the airtight layer 10 of the solar panel 1 with the airtight state of the airtight layer 10 maintained.

  For example, as illustrated in FIG. 12, a worm wheel (helical gear) 18 is installed on the shutter member 13, and a worm (screw gear) 19 corresponding thereto is installed on the motor 20, and the worm gear 21 is used. The shutter member 13 can be moved between the exposure position and the shielding position. Wiring for supplying electric power to the motor 20 is connected to a terminal 23 installed outside the solar panel 1 through a through hole 22 formed in the spacer 4.

  With this configuration, the shutter member 13 can be moved by operating the worm gear 21 based on a signal from the outside of the solar panel 1 while maintaining the airtight state of the airtight layer 10.

  The above-described lens 12 may be arranged on the solar panel 1 including the shutter member 13. In this case, the lens 12 can be arranged on the surface of the second panel 5 facing the airtight layer 10 or the lens 12 can be arranged at a position covering the opening 14 of the shutter member 13. Further, the lens 12 may be arranged between the first panel 3 and the shutter member 13 and on either the first panel 3 or the shutter member 13.

  The shutter member 13 is not limited to moving along the first panel 3, and a plurality of shielding portions 15 may be installed on the first panel 3 so as to be tiltable as illustrated in FIG. 13. The shielding portion 15 is disposed perpendicular to the surface facing the airtight layer 10 of the first panel 3 and is exposed to the passage 6 through which the illumination light RL or the like passes, and the surface facing the airtight layer 10 of the first panel 3. It is comprised so that it can incline between the shielding position which is arrange | positioned in parallel and covers the clearance gap part 6. FIG.

  The solar cell 2 that transmits light may be disposed on the first panel 3, and the tilting shielding portion 15 may be disposed densely so that the entire surface of the first panel 3 can be covered by the tilting.

  As illustrated in FIG. 14, the color filter 24 may be arranged in the vicinity of the surface of the first panel 3 that faces the airtight layer 10. The color filter 24 is formed in a state in which each color has a horizontal stripe shape, and the vertical width of each color is determined in accordance with the vertical width of the gap 6 of the first panel 3. Has been. For example, the vertical width of each color of the color filter 24 and the vertical width of the shielding portion 15 can be made the same length.

  In this embodiment, the vertical width of the solar cells 2 is short, and the vertical width of the gap 6 between the solar cells 2 is also short.

  The color filter 24 can be moved in the vertical direction along the first panel 3 by, for example, a configuration using the shutter-side magnet 16 and the operation magnet 17 or a configuration using the worm gear 21.

  By moving the color filter 24 along the first panel 3, the color of the illumination light RL irradiated on the light receiving surface side of the solar panel 1 through the light diffusion plate 5 can be changed. When the solar panel 1 is used as night illumination, the color of the illumination light RL irradiated on the outdoor side can be changed. For example, when the solar panel 1 is installed in a commercial facility window, It can also be used.

  As the color filter 24, for example, a color filter for a liquid crystal display in which colorless and transparent, red, green, and blue that transmit light and black that blocks light are regularly arranged can be used. With this configuration, the color of the illumination on the outdoor side of the solar panel 1 is changed, or the black part is moved to a position facing the gap 6, so that the solar panel 1 can be moved like the shutter member 13 described above. The outdoor side can be turned off.

  When taking sunlight SL indoors during the day, the colorless and transparent portion of the color filter 24 is moved to a position facing the gap 6 of the first panel 3. When the sunlight is strong and it is desired to shield the light, the black portion of the color filter 24 is moved to a position facing the gap 6 of the first panel 3.

  When the outdoor side of the solar panel 1 is used as illumination at night, one of the colorless, transparent, red, green, and blue portions of the color filter 24 is moved to a position facing the gap portion 6 of the first panel 3. . When the outdoor side of the solar panel 1 is turned off and only the indoor side is used as illumination, the black portion is moved to a position facing the gap 6 of the first panel 3. When the indoor side is also turned off, the illumination light source 11 is turned off.

  The configuration of the color filter 24 is not limited to the above, and any color may be included as long as the color of transmitted light can be changed. For example, the color filter 24 in which the light that passes through the color filter 24 and the gap 6 and irradiates the first panel 3 side becomes a single color can be adopted, and the color is continuous in the vertical direction or the horizontal direction. It is also possible to employ a color filter 24 that changes to, or a color filter 24 that has a different color depending on the location. The arrangement of the colors of the color filter 24 can be changed as appropriate according to the arrangement pattern of the solar cells 2 and the gaps 6 installed on the first panel 3.

As illustrated in FIG. 15, a plurality of first panels 3 may be installed via spacers 4 with respect to the relatively large second panel 5. According to this configuration, the first
The size of the panel 3 is standardized, and a plurality of first panels 3 are installed on the second panel 5 having the same size as the window according to the size of the building window, etc. Can be manufactured. Thereby, the manufacturing efficiency of the solar panel 1 can be improved while expanding the variation of the size of the solar panel 1.

  In this embodiment, a plurality of solar cells 2 that are formed in a rectangular shape are arranged in a vertical direction and a horizontal direction with a predetermined interval therebetween to form a first panel 3. That is, the solar cells 2 are arranged in a check shape.

  The amount of light passing through the first panel 3 can be increased by lowering the arrangement density of the solar cells 2 arranged on the first panel 3. Since the transparency of the see-through type first panel 3 is improved, when using glass with a brand name, etc., as a second panel 5 on a show window of a commercial facility, etc., power generation using solar SL while advertising the brand name, etc. Or can be used as a luminaire using the illumination light source 11.

  As illustrated in FIG. 16, the first panel 3 may be installed outwardly in the surface direction via the spacers 4 on both surfaces of the second panel 5. That is, the solar panel 1 has light receiving surfaces formed on both sides thereof.

  According to this configuration, power can be generated on both sides of the solar panel 1, and both sides can be used as a lighting fixture. Since this solar panel 1 can generate power on both sides, it can generate power for a longer time. For example, it can be installed instead of a sign or a guide plate that may be irradiated with sunlight SL from both sides. Moreover, this solar panel 1 can also be installed as a street light. Thereby, a street light with a high degree of freedom in the direction and form of installation can be provided.

  Also in this embodiment, the lens 12, the shutter member 13, the color filter 24, and the like can be installed in appropriate combinations as described above. The external shape of the solar panel 1 of the present invention is not limited to a rectangular parallelepiped shape, but can be formed into a disk shape, an arch shape, or any other shape.

DESCRIPTION OF SYMBOLS 1 Solar panel 2 Solar cell 3 1st panel 4 Spacer 5 2nd panel 6 Crevice part 7 Transparent member 8 Cover glass 9 Power extraction terminal 10 Space, airtight layer 11 Illumination light source 12 Lens 13 Shutter member 14 Opening part 15 Shielding Part 16 Shutter side magnet 17 Operation magnet 21 Worm gear 24 Color filter SL Sunlight RL Illumination light

Claims (8)

  A first panel in which a solar cell is disposed and transmits light, and a spacer continuously disposed along the peripheral edge of the first panel on the surface of the first panel opposite to the surface that receives sunlight. And a second panel that is laminated on the first panel through the spacer and transmits light, and a space surrounded by the first panel, the second panel, and the spacer is airtight. And solar panels.   The solar panel according to claim 1, wherein the second panel is configured by a light diffusing plate that diffuses incident light, and an illumination light source that causes the second panel to receive light is disposed.   3. The solar panel according to claim 1, wherein the first panel includes a plurality of the solar cells that do not transmit light and gap portions that are formed between the adjacent solar cells and transmit light.   4. The sunlight according to claim 3, wherein a lens is disposed between the first panel and the second panel, and the lens condenses light diffused from the light diffusion plate in the gap portion of the first panel. panel.   A shutter member comprising an opening for transmitting light and a shielding portion for shielding light is disposed between the first panel and the second panel, and the shutter member is disposed in the gap portion of the first panel. The solar panel of Claim 3 or 4 comprised so that a movement to the exposure position which makes an opening part oppose and the shielding position which makes the said shielding part oppose the said clearance gap part of a said 1st panel is possible.   The solar panel according to any one of claims 3 to 5, wherein a color filter is disposed between the first panel and the second panel, and the color filter is configured to be movable along the first panel. .   The solar panel according to any one of claims 1 to 6, wherein the second panel is configured by a flat plate that transmits light, or a flat plate that transmits the light embedded with a metal net or a reflective material that reflects light. .   The sun according to claim 1, wherein the first panels are laminated on both sides of the second panel via the spacers, and each light receiving surface of the first panel is formed outward in the surface direction. Light panel.

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