JP2014053334A - Winding type photovoltaic power generation sheet and winding type sunshade device using the same - Google Patents

Abstract

[PROBLEMS] To provide a wind-up photovoltaic sheet capable of easily adjusting the installation area and installation position of a solar cell film while ensuring the area necessary for awning, deteriorating the appearance impression, and preventing deterioration. To do.
SOLUTION: A flexible solar cell film 2 and a flexible dummy sheet 3, and a flexible sealing layer 4 and a sealing layer 4 for sealing the solar cell film 2 and the dummy sheet 3 therein. And a flexible protective layer 5 provided on both sides. The solar cell film 2 having an area corresponding to the required power generation amount obtained in advance is provided, and the necessary power generation amount and the actual power generation amount are balanced while securing the size of the screen necessary for awning. .
[Selection] Figure 3

Description

  The present invention relates to a wind-up type photovoltaic power generation sheet that is housed in a manner to be wound around a roller and that is pulled out from the roller and spreads in use, and a roll-type sunshade such as a roll screen device or an awning that uses this as a sunscreen. Relates to the device.

  There is a roll screen device in which a solar cell film is provided on a rollable screen, and the solar cell film is spread together with the screen during use to generate electricity while being shaded (for example, Patent Document 1). This roll screen device is shown in FIGS. In this roll screen device, a plurality of flexible solar cell films 103 are arranged side by side on the entire surface of the screen 101 drawn from the roller 102, and when not in use, the solar cell film 103 is attached to the roller 102 together with the screen 101. I'm trying to wind it up. The size of the screen 101 is determined mainly based on the size necessary for the awning.

Japanese Patent Laid-Open No. 11-145503

  However, in the above roll screen device, since the solar cell film 103 is provided in the entire region pulled out from the roller 102 of the screen 101 having a size necessary for awning, the actual power generation amount by the solar cell film 103 is necessary power generation. It may greatly exceed the amount (power consumption). In this case, not only the power that has not been used is wasted, but the number of installed solar cell films 103 is too large, resulting in an increase in manufacturing cost.

  Further, depending on the installation location of the roll screen device, the sunlight is not always satisfactorily applied to the entire surface of all the solar cell films 103, and a shaded part may occur. When the solar cell film 103 is partially shaded, no electric power is generated in the shaded portion, so that electric resistance increases, and heat is generated by current flowing through this portion, and the solar cell film 103 and A so-called hot spot phenomenon occurs in which the solar cell sheet is melted and damaged. Therefore, not only the solar cell film 103 but also the screen 101 is greatly damaged.

  As described above, it is also necessary to provide a region where the solar cell film 103 is not provided on a part of the screen 101. However, if the solar cell film 103 is simply omitted, the shaded region cannot be shielded and shade is created. In addition, the portion where the solar cell film 103 is omitted is conspicuous and deteriorates the appearance impression.

  It is possible to shield the light by preparing a light shielding sheet and bonding the light shielding sheet to the front or back surface of the screen, but in this case, the joint is exposed to the outside. Become. For this reason, there is a possibility that the light shielding sheet may be peeled off from the screen due to moisture entering the joints or being irradiated with ultraviolet rays, etc. In a roll screen device that can be used in harsh conditions that continue to be exposed to sunlight and wind and rain Is not an appropriate method. Further, when the light shielding sheet is bonded to the front surface or the back surface of the screen, a step is generated, and stress and friction generation points are concentrated when the screen is wound or stretched. Also from this point, it is not an appropriate method in a roll screen apparatus in which winding and stretching are repeatedly performed.

  The present invention is capable of adjusting the installation area and the installation position of the solar cell film while ensuring the area necessary for the awning and the appearance impression, and preventing the deterioration of the solar cell sheet including the solar cell film and the dummy sheet. An object of the present invention is to provide a wind-up solar power generation sheet and a wind-up sunshade device using the wind-up solar power generation sheet as a screen for sunshade.

  In order to achieve such an object, the roll-up solar power generation sheet according to claim 1 seals the flexible solar cell film and the flexible dummy sheet, and the solar cell film and the dummy sheet inside. A flexible sealing layer and a flexible protective layer provided on both surfaces of the sealing layer are provided. Therefore, a part of the solar cell film can be replaced with a dummy sheet.

  Moreover, the wind-up type solar power generation sheet according to claim 2 is provided with a solar cell film having an area corresponding to a required power generation amount obtained in advance. Therefore, the required amount of power is generated.

  Further, in the wind-up type photovoltaic power generation sheet according to claim 3, a dummy sheet is provided in a shaded position at the time of use that is obtained in advance.

  Moreover, the wind-up type solar power generation sheet according to claim 4 is provided with a region where the solar cell film and the dummy sheet are not arranged over the entire periphery of the sealing layer.

  Further, the take-up solar power generation sheet according to claim 5 is modularized.

  Furthermore, the winding type | mold sunshade of Claim 6 is equipped with the winding type solar power generation sheet as described in any one of Claim 1 to 3 as a screen for sunshades.

  Further, in the wind-up type sunshade device according to claim 7, an area necessary for the sunshade can be secured by providing the screen for sunshade by providing the region provided with the dummy sheet in addition to the region provided with the solar cell film. ing.

  In the wind-up type photovoltaic power generation sheet according to claim 1, since the dummy sheet is provided in addition to the solar cell film, a part of the solar cell film can be replaced with the dummy sheet, and the solar cell film is a dummy. The cost can be reduced by the amount replaced with the sheet. Moreover, since the solar cell film and the dummy sheet are sealed in the sealing layer, the solar cell film and the dummy sheet can be prevented from being exposed to the outside. Compared with the case of bonding to the front and back surfaces of the sheet made of protective film, it is possible to suppress the intrusion of moisture from the bonding portion, direct ultraviolet rays, and other effects from the outside air, and the deterioration of each layer constituting the screen (Peeling, discoloration, etc.) can be suppressed and the durability of the photovoltaic power generation sheet can be improved. In addition, when the dummy sheet is bonded so as to be attached to the surface, the back surface, etc. of the sheet made of the solar cell film, the sealing layer, and the protective film, a step is generated by the dummy sheet. Etc. can be suppressed in the sealing layer, and the occurrence of such a step can be suppressed, and the concentration of the places where stress and friction are generated can be suppressed and the durability of the photovoltaic sheet can be improved. Furthermore, the part which abbreviate | omitted the solar cell film can be made not conspicuous by replacing a part of solar cell film with a dummy sheet. Therefore, the installation area and installation position of the solar cell film can be adjusted without deteriorating the appearance impression. Moreover, since it becomes possible to shield the portion where the solar cell film is omitted by the dummy sheet, it is easy to secure an area necessary for the awning.

  Moreover, in the wind-up type solar power generation sheet according to claim 2, since the solar cell film having an area corresponding to the required power generation amount obtained in advance is provided, the actual power generation amount by the solar cell film is required. The power generation amount (necessary power generation amount) can be made to correspond. Therefore, the actual power generation amount and the necessary power generation amount can be balanced to prevent excessive power generation, and the number of installed solar cell films can be reduced to the appropriate minimum, and the necessary power generation amount can be reduced. Manufacturing cost can be reduced while ensuring.

  Moreover, in the wind-up type photovoltaic power generation sheet according to claim 3, since the dummy sheet is provided in the shade position at the time of use obtained in advance, the solar cell film is prevented from being shaded at the time of use. It is possible to prevent the occurrence of hot spots and damage of the photovoltaic power generation sheet.

  Further, in the wind-up type photovoltaic power generation sheet according to claim 4, since the region where the solar cell film and the dummy sheet are not disposed is provided over the entire periphery of the sealing layer, the solar cell film and the dummy sheet are sealed. Exposure from the periphery of the layer can be more completely prevented, and deterioration can be more reliably prevented.

  Moreover, since the wind-up type solar power generation sheet of Claim 5 is modularized, a magnitude | size can be easily increased / decreased as needed and versatility can be improved. In addition, since it can be easily replaced in units of modules in the event of a failure, the usability can be improved.

  Furthermore, in the wind-up type sunshade device according to claim 6, since the wind-up type solar power generation sheet according to any one of claims 1 to 5 is provided as a sunscreen, a roll screen device or an awning is provided. Solar power generation can be performed using a sunshade device such as the above.

  Moreover, in the wind-up type sunshade device according to claim 7, since the area necessary for the sunshade is secured by providing the area provided with the dummy sheet in addition to the area provided with the solar cell film, the sunscreen While securing the area, the area of the solar cell film can be suppressed to a necessary amount, and it is easy to balance light shielding and power generation.

It is a front view of the state which showed 1st Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is a front view of the state which showed the sheet module which constitutes a rewind-type solar power generation sheet, and was opened. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing which shows a mode that the sheet | seat used as a sealing layer and the sheet | seat used as a protective layer were accumulated on the solar cell film in order to form a sheet module. It is a front view of the state which showed 2nd Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is a front view of the state which showed 3rd Embodiment of the winding type solar power generation sheet of this invention, and was extended. It is a front view of the state which showed 4th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is a front view of the state which showed 5th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 6th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 7th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is a front view of the state which showed 8th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 9th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 10th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is a front view of the state which showed 11th Embodiment of the winding type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 12th Embodiment of the winding type solar power generation sheet of this invention, and was extended. It is sectional drawing which follows the AA line of FIG. It is the front view of the state which showed 13th Embodiment of the winding type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 14th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is a front view of the state which showed 15th Embodiment of the winding-type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 16th Embodiment of the winding type solar power generation sheet of this invention, and was extended. It is the front view of the state which showed 17th Embodiment of the winding type solar power generation sheet of this invention, and was extended. It is a perspective view of the state which showed 1st Embodiment of the winding type | mold sunshade of this invention, and expanded the screen. It is a perspective view of the state which showed 2nd Embodiment of the winding type | mold sunshade of this invention, and expanded the screen. It is a perspective view of the state which showed 3rd Embodiment of the winding type | mold sunshade of this invention, and expanded the screen. It is a perspective view of the state which showed 4th Embodiment of the winding type | mold sunshade of this invention, and lowered the screen. It is a front view of the state which showed the conventional roll screen apparatus and lowered the screen. It is a side view of the state which showed the conventional roll screen apparatus and lowered the screen.

  Hereinafter, the configuration of the present invention will be described in detail based on the form shown in the drawings.

  In FIG. 1, an example of embodiment of the winding-type solar power generation sheet of this invention is shown. A take-up solar power generation sheet (hereinafter simply referred to as a solar power generation sheet) 1 includes a flexible solar cell film 2 and a flexible dummy sheet 3, and the solar cell film 2 and the dummy sheet 3 sealed inside. A flexible sealing layer 4 to be stopped and a flexible protective layer 5 provided on both surfaces of the sealing layer 4 are provided. In FIG. 1 and the like, the solar cell film 2 and the dummy sheet 3 sealed in the sealing layer 4 are shown by solid lines for easy understanding, and are differentiated by giving different hatching.

  The solar power generation sheet 1 is used as a screen of an awning device such as an awning, a roll screen device, and a roll curtain, and is accommodated so as to be wound around a roller 6 and is drawn out from the roller 6 and spread when used. It is done. A front frame 7 is attached to the side on the drawer side.

  In addition, the length direction of the photovoltaic sheet 1 is a direction in which the photovoltaic sheet 1 is wound up and pulled out from the roller 6 (up and down direction in FIG. 1), and the width direction of the photovoltaic sheet 1 is This is the axial direction of the roller 6 (the left-right direction in FIG. 1).

  The photovoltaic power generation sheet 1 of the present embodiment is modularized, and a large photovoltaic power generation sheet 1 is configured by connecting a plurality of sheet modules 8 in the width direction. One sheet module 8 is shown in FIGS. Two rectangular dummy sheets 3 are arranged on the roller 6 side of four rectangular solar cell films 2 arranged in two columns and two rows, and a long rectangular dummy is further formed on both sides thereof. Sheets 3 are arranged one by one. These solar cell film 2 and dummy sheet 3 are sealed in a sealing layer 4. Further, protective layers 5 are provided on both front and back surfaces of the sealing layer 4.

  The solar cell film 2 is flexible. For example, an amorphous silicon type or a dye-sensitized film type solar cell can be used, but is not limited thereto. Each solar cell film 2 is connected by a wiring (not shown), and their outputs are taken out through the wirings 9A and 9B. The output is not limited to being taken out by the two wires 9A and 9B, but may be taken out by a single wire, or may be taken out by using three or more wires.

  The dummy sheet 3 is a member such as a cloth, sheet, or film having flexibility. As a material of the dummy sheet 3, for example, polyester, polyvinyl chloride, acrylic, polycarbonate, or the like can be used, but is not limited thereto. For example, canvas, glass fiber reinforced plastic sheet, aluminum sheet or the like can be used. The dummy sheet 3 preferably has the same thickness as the solar cell film 2. By making the thickness of the dummy sheet 3 and the thickness of the solar cell film 2 approximately the same, it becomes easier to prevent a partial change in the thickness of the sealing layer 4, and the photovoltaic sheet 1 is wound more uniformly. Can be made easier. However, a dummy sheet 3 that is thicker or thinner than the solar cell film 2 may be used. Even in these cases, the solar cell film 2 and the dummy sheet 3 are sealed by sealing them in the sealing layer 4. It is possible to easily prevent a partial change in the thickness of the layer 4.

  In the present embodiment, the dummy sheet 3 that does not transmit light is employed, and the area for shade is increased. However, the dummy sheet 3 may be one that transmits light. For example, a fabric may be adopted as the dummy sheet 3, and light may be transmitted through the gaps of the weaves, or the dummy sheet 3 may transmit light by using a transparent or translucent film or sheet. By using a light transmitting material as the dummy sheet 3, it is possible to obtain light from the portion of the dummy sheet 3, and the inside space when the photovoltaic power generation sheet 1 is stretched is prevented from becoming completely dark. It can be a space with an atmosphere of.

  In the present embodiment, the sealing layer 4 is formed of EVA (ethylene vinyl acetate copolymer resin), but is not necessarily limited thereto.

  In the present embodiment, each protective layer 5 is formed of a fluororesin (ETFE: fluororesin composed of tetrafluoroethylene and ethylene copolymer) sheet, but is not limited to this, for example, PET (polyethylene terephthalate) A sheet made of aluminum, an aluminum film, a glass fiber sheet, or the like can be used. Moreover, in this embodiment, although the material of both the protective layers 5 is made the same, you may make it different. Further, the outer surface of each protective layer 5 of the present embodiment is an uneven surface, and the expansion due to a temperature difference or the like due to a difference in thickness or material, a difference in how sunlight hits, etc. by changing the size or shape of the unevenness. However, it is not necessary to change the size and shape of the unevenness if there is no problem.

  Each protective layer 5 is transparent or translucent and transmits light. In particular, the protective layer 5 on the front side has a good light transmittance so that more light strikes the solar cell film 2. However, the protective layer 5 on the back side may not transmit light. In this case, it is possible to prevent the solar cell film 2 from being seen through from the back side (opposite side to which light is applied). As the protective layer 5 that does not transmit light, for example, a black fluorine film or the like can be used.

  For example, as shown in FIG. 4, the sheet module 8 is a sheet (for example, an EVA sheet) that becomes the sealing layer 4 on both sides of the solar cell film 2 and the dummy sheet 3 (the description of the dummy sheet 3 is omitted in FIG. 4). Further, a sheet (for example, an ETFE sheet) to be the protective layer 5 is laminated on both sides and laminated. That is, the sheet which becomes the sealing layer 4 on both sides is obtained by applying pressure while heating the sheet which becomes the sealing layer 4 and the sheet which becomes the protective layer 5 on both sides of the solar cell film 2 and the dummy sheet 3. While being melted to form one sealing layer 4 that encloses the solar cell film 2 and the dummy sheet 3, ETFE sheets on both sides are welded to the outer surface of the sealing layer 4 to form the protective layer 5.

  Since the sealing layer 4 is formed by melting two sheets into one layer, the thickness can be made uniform as a whole (FIG. 3). That is, when the solar cell film 2 and the dummy sheet 3 (hereinafter referred to as the solar cell film 2 or the like) are simply sandwiched between two encapsulating sheets, there is a step on the outside of the encapsulating sheet depending on the presence or absence of the solar cell film 2 or the like. However, in the present invention, the solar cell film 2 and the like are sealed in the sealing layer 4 so that the occurrence of such a step can be suppressed, and the concentration of stress and friction generation points can be suppressed to reduce the sun. The durability of the photovoltaic sheet can be improved.

  A region 16 where the solar cell film 2 and the dummy sheet 3 are not disposed is provided on the entire periphery of the sealing layer 4, and the solar cell film 2 and the dummy sheet 3 are more reliably sealed. . In the present embodiment, the region 16 is provided across the width of, for example, 20 mm from the edge of the sealing layer 4, but is not necessarily limited to 20 mm. By providing the region 16 over the entire circumference of the sealing layer 4, it is possible to more reliably prevent the joint portion of the solar cell film 2 and the dummy sheet 3 from being exposed to the outside. Compared with the case where the sheet is composed of the stop layer 4 and the protective layer 5, that is, the sheet is bonded to the front or back surface of the photovoltaic power generation sheet 1, moisture intrusion from the bonded part, ultraviolet radiation, and other influences from outside air are further suppressed. The deterioration (peeling, discoloration, etc.) of the solar cell film 2, the dummy sheet 3, and the sealing layer 4 can be further suppressed, and the durability of the photovoltaic power generation sheet 1 can be further improved. Moreover, when it joins so that the dummy sheet 3 may be affixed on the surface or the back surface of the photovoltaic sheet 1, a step will be produced by the dummy sheet 3, but in the photovoltaic sheet 1 of the present invention, the solar cell film 2 Further, by sealing the dummy sheet 3 in the sealing layer 4, it is possible to suppress the occurrence of such a step, and to improve the durability of the photovoltaic power generation sheet 1 by suppressing the concentration of stress and friction generation points. Can be made.

The size of the photovoltaic power generation sheet 1 is determined mainly based on the size required for the awning. If one sheet module 8 is not large enough for the awning, the necessary number of sheet modules 8 is connected to secure the necessary size for the photovoltaic power generation sheet 1. The connection of the sheet module 8 is performed by, for example, adhesion, welding, lamination, or the like, but is not limited thereto. In the present embodiment, four sheet modules 8 are connected to constitute one large photovoltaic sheet 1, but the number of sheets to be connected is not limited to four. For example, when the area of one sheet module 8 is Am ² and the area required for the awning is 5.5 × Am ² , it is preferable to connect six sheet modules 8. That is, it is preferable to connect the minimum number of sheet modules 8 that can secure an area necessary for awning.

In the present embodiment, a power generation amount (necessary power generation amount) required when using the solar power generation sheet 1 is obtained in advance, and the solar cell film 2 having an area corresponding to the necessary power generation amount is provided. For example, the area of one solar cell film 2 is Xm ² , and the area of the solar cell film 2 necessary for power generation of the necessary power generation amount Y is 15.5 × Xm ² (X is the solar cell film 2 per sheet) ), It is preferable to provide 16 solar cell films 2 (4 solar cell films 2 per sheet module 8). That is, it is preferable to provide the minimum number of solar cell films 2 that can secure the necessary power generation amount Y. Actually, since the power generation amount per one solar cell film 2 is determined as a specification, the minimum number of solar cell films 2 that can secure Y are provided. In the present embodiment, four solar cell films 2 are provided for one sheet module 8.

  Since this solar power generation sheet 1 includes the dummy sheet 3 in addition to the solar cell film 2, the solar cell film 2 is omitted by replacing a part of the solar cell film 2 with the dummy sheet 3. can do. Therefore, the installation area and installation position of the solar cell film can be adjusted without deteriorating the appearance of the solar power generation sheet 1.

  Moreover, since the light shielding in the part which abbreviate | omitted the solar cell film 2 with the dummy sheet | seat 3 is attained, ensuring of an area required for an awning is easy.

  Moreover, the designability can be added by giving the dummy sheet 3 a design such as coloring or pattern.

  Further, the manufacturing cost can be reduced by the amount of replacement of the solar cell film 2 with the dummy sheet 3.

  In addition, since the size and shape of the commercially available solar cell film 2 are determined, the size and shape when a plurality of the solar cell films 2 are arranged are not necessarily the size and shape necessary for the photovoltaic power generation sheet 1 (the shade). It does not always fit the required size and shape. Since the photovoltaic power generation sheet 1 of the present invention includes the dummy sheet 3, the solar cell film 2 and the dummy sheet 3 are arranged in a necessary size and shape by adjusting the size and shape of the dummy sheet 3. It is easy to match the size and shape required for the photovoltaic sheet 1.

  Moreover, since the solar cell film 2 and the dummy sheet 3 are sealed in the sealing layer 4, it is possible to prevent the end portions of the solar cell film 2 and the dummy sheet 3 from being exposed to the outside. The product life can be extended by improving the durability.

  Moreover, the actual power generation amount by the solar cell film 2 and the required power generation amount can be made to correspond. Therefore, the actual power generation amount and the necessary power generation amount can be balanced to prevent excessive power generation, and the number of installed solar cell films 2 can be reduced to an appropriate one, and the necessary power generation amount. It is possible to suppress an increase in manufacturing cost while securing the above.

  In the above description, the same sheet module 8 is connected in order to enlarge the photovoltaic power generation sheet 1, but sheet modules 8 having different sizes may be connected. In the above description, the solar power generation sheet 1 having a predetermined size is configured by connecting the plurality of sheet modules 8, but is not limited thereto. For example, instead of connecting a plurality of sheet modules 8, a photovoltaic power generation sheet 1 formed in advance to a predetermined size may be used.

  In the above description, a plurality of the same solar cell films 2 are provided. However, a plurality of solar cell films 2 having different sizes and shapes may be provided.

  In the above description, the solar cell film 2 or the dummy sheet 3 is provided over almost the entire surface of the solar power generation sheet 1. That is, when the solar cell film 2 is omitted, the solar cell film 2 is replaced. However, the solar cell film 2 may be omitted without providing the dummy sheet 3. That is, there may be a portion where both the solar cell film 2 and the dummy sheet 3 are absent.

  In the photovoltaic power generation sheet 1 of the present invention, various variations can be set for the arrangement of the solar cell film 2 and the dummy sheet 3. For example, the ratio of the area of the solar cell film 2 and the dummy sheet 3 can be changed. Examples of this case are shown in FIGS. For example, the area ratio of the solar cell film 2 and the dummy sheet 3 may be 1: 1 (FIGS. 5 and 6), 1: 2 (FIGS. 7 and 8), or other ratios. . Moreover, the solar cell film 2 and the dummy sheet 3 may be arranged in the length direction of the photovoltaic power generation sheet 1 (FIGS. 5 and 7), or may be arranged in the width direction (FIGS. 6 and 8).

  Moreover, a design can be given to the photovoltaic power generation sheet 1 by the arrangement of the solar cell film 2 and the dummy sheet 3. For example, the photovoltaic power generation sheet 1 can be formed into a stripe pattern by arranging the photovoltaic power generation sheet 1 and the dummy sheet 3. For example, vertical stripes can be used as shown in FIGS. 9 and 10, and horizontal stripes can be used as shown in FIGS. In these cases, the solar cell film 2 and the dummy sheet 3 may be alternately arranged (FIGS. 9 and 11), the solar cell film 2 is disposed on the front frame 7 side, and the dummy sheet 3 is disposed on the roller 6 side. You may arrange | position (FIG. 10, FIG. 12). Furthermore, as shown in FIG. 13, the solar cell film 2 and the dummy sheet 3 may be formed in a brick size to form a brick-like pattern.

  Further, for example, as shown in FIG. 14, it is possible to use the photovoltaic sheet 1 for advertising / appealing by describing characters, illustrations, logos, and the like indicated by reference numeral 17 on the dummy sheet 3.

  Further, the solar power generation sheet 1 may be used for light shielding or daylighting depending on the application. For example, as shown in FIGS. 15 to 18, the solar cell film 2 is arranged on the light shielding sheet (dummy sheet 3) provided on almost the entire surface of the photovoltaic power generation sheet 1, and the solar cell film 2 and the solar cell film 2 are arranged. By preventing light from leaking between the two, it can be used for light shielding. In this case, the arrangement of the solar cell film 2 and the dummy sheet 3 may be a vertical stripe (FIG. 17) or a horizontal stripe (FIG. 18).

  Further, for example, as shown in FIGS. 19 and 20, the sealing layer 4 and the protective layer 5 are made transparent, and the space between the solar cell film 2 and the dummy sheet 3 is increased so that the solar cell film 2 and the dummy layer 3 are dummy. It can also be used for lighting by inserting light from between the sheets 3. In this case, the arrangement of the solar cell film 2 and the dummy sheet 3 may be a vertical stripe (FIG. 19) or a horizontal stripe (FIG. 20).

  Moreover, in the above-mentioned description, although the shape of the solar cell film 2 was a rectangle, it is not necessarily restricted to a rectangle. For example, the solar cell film 2 may be a polygon such as a triangle, a hexagon, or a pentagon, or may be a circle, an ellipse, or other shapes. For example, the example which made the solar cell film 2 the triangle is shown in FIG. In this example, the solar cell film 2 is an isosceles triangle, and right-sided triangular dummy sheets 3 are provided on both sides thereof.

  Next, a retractable sunshade device (hereinafter simply referred to as a sunshade device) will be described. FIG. 22 shows an example of an embodiment of the sunshade device of the present invention. The awning device 11 includes the above-described photovoltaic power generation sheet 1 as a awning screen.

  In this embodiment, the awning device 11 is applied to a terrace-type retractable awning, but is not necessarily limited to a terrace-type retractable awning.

  The awning device 11 is installed, for example, on a wall surface (not shown) of a building. On the wall surface of the installation place, a case 12 in which a roller 6 for winding the screen 1 (solar power generation sheet 1) is accommodated, and a pair of arms 13 for supporting a front frame 7 attached to the drawer side of the screen 1, 14 is fixed. When the roller 6 is rotated in the opening direction by electric or manual operation, the arms 13 and 14 are extended by their own weight, the front frame 7 is pushed obliquely forward from the wall surface, and the screen 1 is pulled out from the case 12. That is, the screen 1 wound around the roller 6 and accommodated in the case 12 is drawn out and spread, and power generation by the solar cell film 2 is started. On the other hand, when the roller 6 is rotated in the winding direction, the screen 1 is wound around the roller 6 in the case 12, the arms 13 and 14 are folded, and the front frame 7 is returned so as to overlap the front surface of the case 12. That is, the spread screen 1 is closed.

  The size of the screen 1 is determined based on the size necessary for the awning. Therefore, the shade of an area required as the sunshade device 11 can be made.

  That is, the area required for the shade is secured by providing the area where the dummy sheet 3 is provided in addition to the area where the solar cell film 2 is provided on the screen 1. That is, the area of the screen 1 necessary for the awning is determined in advance according to the use conditions and the like, but it is not necessary to provide the solar cell film 2 on the entire surface of the screen 1 in relation to the required power generation amount. Therefore, by replacing a part of the solar cell film 2 with the dummy sheet 3, the area of the solar cell film can be suppressed to a necessary amount while ensuring the area of the awning, and it is easy to balance light shielding and power generation. It is.

  The awning device 11 is provided with, for example, illumination (not shown), and the illumination is turned on by the electric power generated by the solar cell film 2. That is, when there is sunlight in which solar power generation is possible, the illumination is turned on when power generation by the solar cell film 2 is started by spreading the screen 1, and the light is turned off when the screen 1 is closed. It is possible to obtain in advance the electric power (necessary power generation amount) necessary for lighting the lighting, and the number of installed solar cell films 2 (area) is determined based on the necessary power generation amount. In the above description, the use of electric power is lighting, but it is not limited to lighting. Further, instead of providing illumination, a battery may be provided to store a necessary amount of power. Or you may make it provide a battery while providing illumination. In this case, by storing the electric power in the battery, the generated electric power can be used without being restricted by the power generation timing of the awning device 11 and the opening / closing timing of the screen 1.

  In this invention, since the solar cell film 2 of the area according to the required electric power generation calculated | required previously is provided, the actual electric power generation by the solar cell film 2 and required electric power generation can be made to respond | correspond. Therefore, the actual power generation amount and the necessary power generation amount can be balanced to prevent excessive power generation, and the number of installed solar cell films 2 can be reduced to an appropriate one, and the necessary power generation amount. It is possible to suppress an increase in manufacturing cost while securing the above.

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention.

  For example, in the above description, the actual power generation amount and the necessary power generation amount are balanced by adjusting the installation area and the installation position of the solar cell film 2 and the dummy sheet 3, but are not necessarily limited to this. Absent. For example, you may make it provide the dummy sheet 3 in the shadow position 15 at the time of use previously calculated | required by adjusting the installation position and installation area of the solar cell film 2 and the dummy sheet 3. Examples of the solar power generation sheet 1 are shown in FIGS. 10 and 12, for example, and examples of the awning device 11 are shown in FIG. 23, respectively. For example, if the half area on the case 12 side of the unfolded screen 1 is a shadow position 15 that is shaded during use, the dummy sheet 3 is provided at this position. By doing in this way, since it can prevent that the solar cell film 2 is shaded at the time of use, generation | occurrence | production of a hot spot can be prevented.

  In the above description, the solar power generation sheet 1 is used for the screen of the terrace type awning device 11, but the usable awning device 11 is not limited to the terrace type. For example, as shown in FIG. 24, it may be used as a self-standing awning screen 1 or as a screen-type awning screen 1 as shown in FIG. Moreover, you may use as a screen of another type of awning. Further, the present invention is not limited to awning, and can be used as a screen for a roll curtain or the like. In other words, any screen can be used as long as it has a screen for awning taken up by the roller 6 and pulls out the screen for awning from the roller 6 during use.

1 Rewind-type solar power generation sheet (screen for sunshade)
2 Solar cell film 3 Dummy sheet 4 Sealing layer 5 Protective layer 11 Rewind-type sunshade device 15 Shadow position at the time of use

Claims (7)

  A flexible solar cell film and a flexible dummy sheet; a flexible sealing layer for sealing the solar cell film and the dummy sheet inside; A roll-up photovoltaic power generation sheet comprising a flexible protective layer.   The winding solar photovoltaic sheet according to claim 1, wherein the solar cell film having an area corresponding to a required power generation amount obtained in advance is provided.   The take-up solar power generation sheet according to claim 1 or 2, wherein the dummy sheet is provided in a shaded position at the time of use that is obtained in advance.   The wind-up solar photovoltaic sheet according to any one of claims 1 to 3, wherein a region where the solar cell film and the dummy sheet are not disposed is provided over the entire periphery of the sealing layer. .   It is modularized, The wind-up-type solar power generation sheet as described in any one of Claim 1 to 4 characterized by the above-mentioned.   A wind-up awning device comprising the wind-up solar power generation sheet according to any one of claims 1 to 5 as a screen for awning.   The area for a sunshade is ensured by providing the area | region where the said sheet | seat for said awning was provided with the area | region where the said dummy sheet | seat was provided in addition to the area | region where the said solar cell film was provided. Retractable sunshade.

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