JP6590246B2 - Solar cell module - Google Patents

Description

  The present invention relates to a solar cell module that includes a display surface for performing display and can also generate power by a solar cell panel.

  As an example of such a solar cell module, Patent Document 1 describes a traffic sign provided with a solar cell panel. In the traffic sign described in Patent Document 1, the power generated by the solar cell panel is stored in the daytime, and the stored power is used as a power source for lighting to improve nighttime visibility and daytime warning effect. . In addition, since a wiring cable for supplying power from the outside is unnecessary, it can be easily installed even in an area where there is no power supply facility. Against this background, development of traffic signs with solar cell panels has been underway in recent years.

JP 2000-54325 A

In the traffic sign described in Patent Document 1, a solar battery panel is provided above the display surface.
The light receiving surface of the solar cell panel is exposed to the outside so that a large amount of power can be obtained by receiving a large amount of external light. For this reason, the light-receiving surface of the solar cell panel is in a position where it can be easily seen by an observer who observes the traffic sign. However, since the light receiving surface of the solar cell panel is a dark blue or black single color, the appearance of the solar cell panel is not compatible with the surrounding environment.

  The present invention has been made in consideration of the above points, and provides a solar cell module that can be harmonized with the surrounding environment and can be compatible with both display on the display surface and power generation by the solar cell panel. Objective.

  A solar cell module according to the present invention includes a first sheet member on which a first display surface is disposed, and a solar cell panel disposed to face the first sheet member, and the first sheet member includes: The second sheet member on which the two display surfaces are arranged can be replaced.

  In the solar cell module according to the present invention, the first sheet member may transmit at least part of incident light to the solar cell panel.

  In the solar cell module according to the present invention, the first sheet member may have a light-transmitting colored layer, and the colored layer may form the first display surface.

  In the solar cell module according to the present invention, the first sheet member may have a light diffusion layer provided closer to the solar cell panel than the colored layer.

  In the solar cell module according to the present invention, the light diffusion layer may be replaceable with another light diffusion layer different from the light diffusion layer.

  In the solar cell module according to the present invention, the first sheet member has a plurality of first display surfaces that are inclined with respect to the panel surface of the solar cell panel arranged along a uniaxial direction. A first display target element may be provided on the display surface, and the first display target may be formed by a combination of the first display target elements.

  In the solar cell module according to the present invention, the second sheet member is uniaxially provided with a plurality of second display surfaces each inclined with respect to the panel surface of the solar cell panel in a state where the second sheet member is replaced with the first sheet member. Arranged along the direction, each second display surface is provided with a second display target element, a second display target is formed by a combination of the second display target elements, and the second sheet member has the second display target. The display surface may be inclined with respect to the panel surface of the solar cell panel at an angle different from an angle formed by the first display surface of the first sheet member with respect to the panel surface of the solar cell panel.

  In the solar cell module according to the present invention, the first sheet member may be detachably bonded to the solar cell panel via a bonding layer.

  In the solar cell module according to the present invention, the joining layer may join the first sheet member and the solar cell panel so as to be peelable and rejoinable.

  In the solar cell module according to the present invention, the second sheet member may be provided with another bonding layer that can be releasably bonded to the solar cell panel.

  The method for producing the second sheet member constituting the solar cell module according to the present invention includes a step of laminating the another bonding layer on a base material, and a step of arranging a material for forming a second display surface on the base material. And comprising.

  In the solar cell module according to the present invention, the solar cell module further includes a fixing member that removably fixes the first sheet member and the solar cell panel, and the fixing member replaces the first sheet member with the second sheet member. The solar cell panel may be detachably fixed.

  In the solar cell module according to the present invention, the second sheet member may be provided with a mark that serves as a mark when the second sheet member is replaced with the first sheet member and aligned with the solar cell panel.

  In the solar cell module according to the present invention, the first sheet member is supported so as to be movable between a position facing the solar cell panel and a position shifted from the position facing the solar cell panel. A second guide member and the second sheet member are supported so as to be movable between a position facing the solar cell panel and a position shifted from the position facing the solar cell panel. And a guide member.

  The solar cell module according to the present invention may further include a storage member that detachably accommodates the second sheet member, and the storage member may also accommodate the first sheet member.

  The solar cell module according to the present invention may include at least one of a measuring instrument that measures the amount of power generated by the solar battery panel and a measuring instrument that measures the amount of light incident on the first sheet member.

  Another solar cell module according to the present invention includes a first sheet member on which a first display surface is disposed, a solar cell panel disposed to face the first sheet member, and a second display surface, And a second sheet member movable between a position facing the solar cell panel and a position shifted from the position facing the solar cell panel.

  Still another solar cell module according to the present invention includes a first sheet member on which a first display surface is disposed, and a solar cell panel disposed to face the first sheet member, and the first sheet member. Is movable between a position facing the solar cell panel and a position shifted from the position facing the solar cell panel.

  A sheet member replacement part according to the present invention is a first solar cell module comprising: a first sheet member on which a first display surface is disposed; and a solar cell panel disposed to face the first sheet member. A sheet member replacement part that is used by replacing the sheet member, and includes a second sheet member on which a second display surface is arranged.

  In the method for manufacturing a sheet member replacement part according to the present invention, the step of removing the material forming the first display surface, and the second display surface on the surface from which the material forming the first display surface has been removed. And a step of arranging a material to be formed.

Still another solar cell module according to the present invention includes a sheet member on which a display surface is disposed,
A solar cell panel disposed opposite to the sheet member, and a part of the sheet member is replaceable.

  In still another solar cell module according to the present invention, the sheet member may be configured by arranging a plurality of sheet parts, and each of the sheet parts may be replaceable independently of the other sheet parts. .

  In the solar cell module according to the present invention, when the solar cell module is observed from a certain direction, the display surface is observed, and light incident on the solar cell module from another direction different from the certain direction is adjacent to 2 The solar battery panel may be passed through between two display surfaces.

  In the solar cell module according to the present invention, the surface of the sheet member facing the solar cell panel includes a plurality of orientation adjustment surfaces and a plurality of light transmission surfaces alternately arranged in a uniaxial direction, and the orientation adjustment The surface is inclined with respect to the panel surface of the solar cell panel, and the light transmission surface is inclined with respect to the panel surface of the solar cell panel at an angle different from the orientation adjustment surface, and the orientation adjustment surface is A display surface may be arranged.

  In the solar cell module according to the present invention, the surface of the sheet member facing the solar cell panel includes a plurality of lens surfaces arranged along the uniaxial direction, and each display surface corresponds to a lens surface corresponding thereto. It may be arranged along a part of.

  In the solar cell module according to the present invention, the plurality of display surfaces may be disposed inside the sheet member.

  In the solar cell module according to the present invention, a display target element may be provided on each display surface, and a display target may be formed by a combination of the display target elements.

  ADVANTAGE OF THE INVENTION According to this invention, while aiming at harmony with the surrounding environment, the solar cell module which can be compatible with the display by a display surface and the electric power generation by a solar cell panel can be provided.

FIG. 1 is a front view showing a solar cell module, for explaining the first embodiment. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a cross-sectional view showing that the second sheet member is attached to the solar cell panel instead of the first sheet member. FIG. 4 is a front view showing the solar cell module with the second sheet member attached to the solar cell panel. FIG. 5 is a cross-sectional view showing another configuration example of the colored layer of the first sheet member. FIG. 6 is a cross-sectional view showing how the light diffusion layer of the first sheet member is exchanged with another light diffusion layer. FIG. 7 is a cross-sectional view showing another example of fixing the first sheet member and the solar cell panel. FIG. 8 is a cross-sectional view showing an example in which alignment marks are provided on the fixing member and the second sheet member in the solar cell module shown in FIG. FIG. 9 is a perspective view showing still another modified example for fixing the first sheet member and the solar cell panel. 10 is a cross-sectional view taken along line XX in FIG. FIG. 11 is a diagram illustrating an example in which a measuring instrument is provided in a solar cell module. FIG. 12 is a perspective view showing a modification of the first and second sheet members. 13 is a cross-sectional view taken along line XIII-XIII in FIG. FIG. 14 is a diagram illustrating an example of a display target displayed on the solar cell module. FIG. 15 is a diagram for explaining the operation of the solar cell module in the same cross section as FIG. 13. FIG. 16 is a diagram for explaining the operation of the solar cell module in the same cross section as FIG. 13. FIG. 17 is a cross-sectional view showing another modification of the first and second sheet members. FIG. 18 is a cross-sectional view showing still another modified example of the first and second sheet members. FIG. 19 is a cross-sectional view showing still another modified example of the first and second sheet members. FIG. 20 is a cross-sectional view showing still another modified example of the first and second sheet members. FIG. 21 is a cross-sectional view showing still another modified example of the first and second sheet members. FIG. 22 is a cross-sectional view showing still another modified example of the first and second sheet members. FIG. 23 is a cross-sectional view showing still another modified example of the first and second sheet members. FIG. 24 is a diagram for explaining the second embodiment, and is a front view showing a solar cell module. 25 is a cross-sectional view taken along line XXV-XXV in FIG.

  Hereinafter, embodiments will be described with reference to the drawings. In the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale, the vertical / horizontal dimension ratio, and the like are appropriately changed and exaggerated from those of the actual product. In addition, as used in this specification, the shape and geometric conditions and the degree thereof are specified, for example, terms such as “parallel”, “orthogonal”, “identical”, length and angle values, etc. are strictly Without being bound by meaning, it should be interpreted including the extent to which similar functions can be expected.

  1-12 is a figure for demonstrating one Embodiment and its modification. Among these, FIG. 1 and FIG. 2 are perspective views or longitudinal sectional views showing the configuration of the solar cell module 1.

  The solar cell module 1 exhibits both a predetermined display function and a power generation function using external light. In the solar cell module 1 shown in FIGS. 1 and 2, the first sheet member 2 on which the first display surface 3 a is arranged is provided on the light incident side with respect to the solar cell panel 50. By providing the first sheet member 2 on the light incident side, the light receiving surface 50a of the solar cell panel 50 is made inconspicuous, and an observer who observes the solar cell module 1 from the light incident side is mainly used for the first sheet. The first display surface 3a arranged on the member 2 is displayed. Further, the first sheet member 2 is devised so that sunlight incident from the light incident side is transmitted toward the solar cell panel 50. Therefore, the sunlight L21 incident on the solar cell module 1 from the light incident side passes through the first sheet member 2 and is guided to the solar cell panel 50. In this way, according to the solar cell module 1, harmony with the surrounding environment is achieved, and both the display by the display surface 3 a and the power generation by the solar cell panel 50 are enabled.

  Hereinafter, the configuration and operational effects of the solar cell module 1 according to the present embodiment will be described in detail. As well shown in FIG. 2, the solar cell module 1 includes a sheet-like first sheet member 2 and a solar cell panel 50 disposed on the back surface of the first sheet member 2.

  The first sheet member 2 has one surface 2a and the other surface 2b as a pair of main surfaces facing each other. One surface 2 a forms an incident surface for external light such as sunlight incident on the solar cell module 1. Further, the one surface 2 a forms an emission surface from which light from the first display surface 3 a that visualizes the first display object 3 b is emitted from the solar cell module 1. On the other hand, the other surface 2 b is a surface facing the solar cell panel 50.

  In the present specification, terms such as “sheet”, “film”, and “plate” are not distinguished from each other only based on the difference in names. Therefore, for example, a “sheet” is a concept including a member that can also be called a film or a plate.

  Further, in this specification, the “sheet surface (film surface, plate surface, panel surface)” is the plane of the target sheet-like member when the target sheet-like member is viewed as a whole and globally. A surface that matches the direction. In the embodiment described below, the sheet surface of the first sheet member 2, the panel surface of the solar cell panel 50, and the light receiving surface 50a of the solar cell panel 50 are parallel to each other. Furthermore, in this specification, the “normal direction” used for a sheet-like (film-like, plate-like, panel-like) member refers to a normal direction to the sheet surface of the member.

  The first sheet member 2 includes a colored layer 3 and a light diffusion layer 4 a provided on the solar cell panel 50 side with respect to the colored layer 3. The colored layer 3 defines one surface 2 a of the first sheet member 2 that forms a light incident surface, and the light diffusion layer 4 a defines the other surface 2 b of the first sheet member 2.

  The colored layer 3 is a layer colored in an achromatic color or a chromatic color so as to form the first display surface 3a intended to be observed by an observer. As described above, the solar cell module 1 is intended to be observed from the one surface 2 a of the first sheet member 2. For this reason, the colored layer 3 forms the first display surface 3 a on the surface that becomes the light incident side, that is, the surface that defines the one surface 2 a of the first sheet member 2. In the example shown in FIG. 1, the first display surface 3 a displays the alphabet “N” as the first display object 3 b for the observer who observes one surface 2 a of the first sheet member 2. ing.

  The coloring method and the forming method of the colored layer 3 are not particularly limited and can be freely designed. The component of the colored layer 3 is not particularly limited, and various dyes and various pigments can be used in appropriate combination as a coloring material. In the colored layer 3, in addition to the colorant, components necessary for forming the colored layer 3, such as a resin as a binder, a solvent, and a dispersant, can be arbitrarily blended as optional components.

  When a pigment is used as the colorant of the colored layer 3, it is preferable in that the weather resistance can be improved. On the other hand, when a dye is used as the coloring material of the colored layer 3, it is preferable in that a vivid color can be reproduced and the design property can be improved. Since the design can be reproduced, it is preferable in that a high light transmittance can be maintained even if the colored layer 3 is formed as a solid layer.

  Since the colored layer 3 according to the present embodiment is positioned so as to cover the light receiving surface 50a of the solar cell panel 50, it is as light-transmissive as possible from the viewpoint of power generation efficiency of the solar cell panel 50. It is preferably transparent. The light transmission may be appropriately designed in consideration of the balance between the display on the first display surface 3a and the power generation efficiency. The average transmittance of the colored layer 3 varies depending on the display on the first display surface 3a, but is preferably 20% or more, for example, 50% or more, more preferably 70% or more.

  Here, the average transmittance in this specification means the visible light transmittance in the in-plane average of the colored layer 3. As the value of the visible light transmittance, for example, using a SM color computer SM-C (manufactured by Suga Test Instruments Co., Ltd.), a visible light wavelength region of 380 nm to 750 nm is measured, and measurement of 12 samples taken arbitrarily is performed. It is preferable from the viewpoint of accuracy improvement to adopt a value obtained by averaging the values. In addition, when there is a place where the visible light transmittance is greatly different in the surface of the colored layer 3 such as when a pattern is formed on the colored layer 3, a place with a relatively large occupied area is selected and averaged. Adoption is sufficient.

  The light diffusion layer 4 a diffuses the light transmitted through the first sheet member 2 and guides it to the solar cell panel 50. The light diffusion layer 4a is not particularly limited as long as it can diffuse incident light. For example, various known light diffusion layers can be appropriately selected and used. For example, the light diffusion layer 4a may be formed by dispersing a diffusion component such as bubbles or beads in a material made of a polyester resin, a polycarbonate resin, or a polyolefin resin. Or the light-diffusion layer 4a may be produced by forming an unevenness | corrugation in the above-mentioned resin sheet.

  In the present embodiment, the colored layer 3 is formed by printing the material forming the colored layer 3 on the resin sheet forming the light diffusion layer 4a. That is, the resin sheet that forms the light diffusion layer 4a functions as a base material on which the colored layer 3 is printed.

  Further, as shown in FIG. 2, the first sheet member 2 is detachably bonded to the solar cell panel 50 via the bonding layer 5. By joining the 1st sheet member 2 and the solar cell panel 50 so that peeling is possible, the 1st sheet member 2 can be peeled and another sheet member can be affixed on the solar cell panel 50. FIG.

  In particular, the bonding layer 5 of the present embodiment bonds the first sheet member 2 and the solar cell panel 50 so that they can be re-bonded. By joining the first sheet member 2 and the solar cell panel 50 in such a manner that they can be rejoined, the first sheet member 2 can be joined again to the solar cell panel 50 after being peeled off.

  From such a viewpoint, as the bonding layer 5, for example, natural rubber, synthetic rubber, silicone-based adhesive, or polyacrylic acid-based polymer compound, polyacrylate-based polymer compound, ethylene acetate copolymer, polyvinyl ether And polymer compounds such as polyvinyl ester. The bonding layer 5 may be a mixture or copolymer of two or more of the above compounds. Moreover, you may make these polymer compounds contain various additives, such as a tackifier, an anti-aging agent, a crosslinking agent, and a filler, as needed.

  Note that the bonding layer 5 shown in FIG. 2 is detachably bonded to the solar cell panel 50 and is fixed to the light diffusion layer 4 a of the first sheet member 2. That is, the bonding layer 5 is a component configured integrally with the first sheet member 2.

  The solar cell panel 50 is a power generator that converts light received by the light receiving surface 50a into electric energy. The light L21 transmitted through the first sheet member 2 is guided to the light receiving surface 50a of the solar cell panel 50, and this light L21 is used for power generation.

  Various types of solar cell panels 50 can be used. For example, a silicon solar cell panel including a flat silicon substrate made of single crystal silicon, polycrystalline silicon, amorphous silicon, or the like, a chalcopyrite solar cell panel, a compound semiconductor solar cell panel, a dye-sensitized solar cell panel, Examples thereof include a quantum dot type solar cell panel and an organic thin film type solar cell panel.

  Among these solar cell elements, dye-sensitized solar cell panels can be manufactured without the need for vacuum conditions in the manufacturing process and the advantage of high power generation efficiency at low illuminance, such as indoor light such as fluorescent lamps and windows. It can be particularly preferably used because of its low cost. In addition, since the dye-sensitized solar cell panel is used indoors as described above, design properties are often required, which is preferable in that the effects of the present invention can be exhibited.

  In the illustrated example, the first sheet member 2 covers the entire light receiving surface 50 a of the solar cell panel 50. In other words, when viewed from the direction shown in FIG. 1, the contour of the colored layer 3 of the first sheet member 2, the contour of the light diffusion layer 4a, and the contour of the light receiving surface 50a overlap each other.

  Now, as described above, the first sheet member 2 and the solar cell panel 50 are detachably bonded via the bonding layer 5, whereby the first sheet member 2 is peeled and another sheet member is attached to the solar cell panel. 50 can be pasted. FIG. 3 shows that the first sheet member 2 is peeled off and another second sheet member 6 is attached to the solar cell panel 50.

  The second sheet member 6 shown in FIG. 3 includes a second display surface 7 a and is configured to be interchangeable with the first sheet member 2. As long as the second display surface 7a is arranged and configured to be interchangeable with the first sheet member 2, the second sheet member 6 may be configured the same as the first sheet member 2 or may have a different configuration. May be. In the following description, the second display object 7b displayed on the second display surface 7a is different from the first display object 3b displayed on the first display surface 3a, but other configurations are the first sheet member 2. The second sheet member 6 will be described using an example configured the same as the above.

  The second sheet member 6 has one surface 6a and the other surface 2b as a pair of main surfaces facing each other. One surface 6 a forms an incident surface for external light such as sunlight incident on the solar cell module 1 in a state where the first sheet member 2 is replaced. Further, the one surface 6 a forms an emission surface from which light from the second display surface 7 a that visualizes the second display object 7 b is emitted from the solar cell module 1. On the other hand, the other surface 6 b forms a surface facing the solar cell panel 50 in a state where the first sheet member 2 is replaced.

  As shown in FIG. 3, the second sheet member 6 includes a colored layer 7 and a light diffusion layer 8 a provided closer to the solar cell panel 50 than the colored layer 7.

  The colored layer 7 is a layer colored in an achromatic color or a chromatic color so as to form the second display surface 7a intended to be observed by an observer. As described above, the solar cell module 1 is intended to be observed from the one surface 6 a of the second sheet member 6. For this reason, the colored layer 7 forms the second display surface 7 a on the surface that becomes the light incident side, that is, the surface that defines the one surface 6 a of the second sheet member 6.

  FIG. 4 shows how the second display surface 7a is observed. In the example shown in FIG. 4, the second display surface 7 a is used for the observer who observes one surface 6 a of the second sheet member 6. The outline of the face is displayed. That is, in the example shown in FIG. 4, the second display object 7b is different from the first display object 3b.

  In particular, the colored layer 7 is preferably as light-transmissive as possible from the viewpoint of power generation efficiency of the solar cell panel 50, that is, it is preferably transparent. Since the coloring method and the forming method of the colored layer 7 are the same as those of the first sheet member 2 described above, detailed description thereof is omitted here.

  The light diffusion layer 8 a diffuses the light transmitted through the second sheet member 6 and guides it to the solar cell panel 50. Since the light diffusion layer 8a can be configured in substantially the same manner as the light diffusion layer 4a of the first sheet member 2 described above, detailed description thereof is omitted here.

  As shown in FIG. 3, the second sheet member 6 is bonded to the solar cell panel 50 via a bonding layer 9 different from the bonding layer 5. In particular, the bonding layer 9 of the present embodiment bonds the second sheet member 6 and the solar cell panel 50 so as to be peelable and rebondable. The bonding layer 9 is detachably bonded to the solar cell panel 50 and is fixed to the light diffusion layer 8 a of the second sheet member 6. That is, the bonding layer 9 is a component configured integrally with the second sheet member 6. The joining layer 9 and the second sheet member 6 constitute a sheet member replacement part 10.

  As described above, according to the present embodiment, the first sheet member 2 on which the first display surface 3a is disposed, and the solar cell panel 50 disposed to face the first sheet member 2, are provided. The first sheet member 2 can be replaced with the second sheet member 6 on which the second display surface 7a is disposed. According to such a form, the light receiving surface 50a of the solar cell panel 50 is made inconspicuous by providing the first sheet member 2 on which the first display surface 3a is disposed so as to face the solar cell panel 50. At the same time, the first display surface 3 a disposed mainly on the first sheet member 2 can be displayed to an observer who observes the solar cell module 1 from the light incident side. Further, by configuring the first sheet member 2 and the second sheet member 6 differently, the first sheet member 2 and the second sheet member 6 can be appropriately selected according to display needs. The light L21 that is not blocked by the first sheet member 2 reaches the solar cell panel 50 and is used for power generation. As a result, harmony with the surrounding environment is achieved, and both the display by the display surface 3a and the power generation by the solar cell panel 50 are made possible.

  Further, according to the present embodiment, the first sheet member 2 transmits at least part of the incident sunlight L <b> 21 and guides it to the solar cell panel 50. In this case, since at least a part of the sunlight L21 incident on the first sheet member 2 can be guided to the solar cell panel 50, it is possible to effectively realize both the display by the display surface 3a and the power generation by the solar cell panel 50. It becomes.

  Moreover, according to this Embodiment, the 1st sheet | seat member 2 has the colored layer 3 which has a light transmittance, and the colored layer 3 forms the 1st display surface 3a. In this case, compatibility between display and power generation can be easily realized by coloring. In addition, the colored layer 3 does not need to be formed over the whole light-receiving surface 50a of the solar cell panel 50, and may be provided partially according to the shape of the 1st display object 3b which should be displayed.

  Moreover, according to this Embodiment, the 1st sheet | seat member 2 has the light-diffusion layer 4a provided in the solar cell panel 50 side rather than the colored layer 3. FIG. By diffusing the light from the first sheet member 2 toward the solar cell panel 50 by the light diffusion layer 4a, the light can reach the wide area of the light receiving surface 50a of the solar cell panel 50 evenly. As a result, an increase in internal resistance due to local concentration of light on the light receiving surface 50a can be prevented, and the solar cell panel 50 can efficiently generate power. On the other hand, for the observer observing the solar cell module 1, the light diffusion layer 4 a can be observed as the background of the colored layer 3. In this case, the white turbid light diffusion layer 4a makes the solar cell panel 50 inconspicuous and is also observed as the background, so that the first display object 3b displayed by the colored layer 3 can be visually recognized more beautifully. . The light diffusion layer 4a is provided as necessary, and the light diffusion layer 4a is not necessarily provided.

  Further, according to the present embodiment, the first sheet member 2 is detachably bonded to the solar cell panel 50 via the bonding layer 5. In this case, if the first sheet member 2 is peeled off, the first sheet member 2 and the second sheet member 6 can be exchanged, and this exchange operation is facilitated.

  In particular, the bonding layer 5 of the present embodiment bonds the first sheet member 2 and the solar cell panel 50 so as to be peelable and re-bondable. By joining the first sheet member 2 and the solar cell panel 50 in such a manner that they can be rejoined, the first sheet member 2 can be joined again to the solar cell panel 50 after being peeled off.

  In addition, according to the present embodiment, the second sheet member 6 is provided with another bonding layer 9 that can be releasably bonded to the solar cell panel 50. In this case, even if the bonding layer 5 is fixed to the first sheet member 2, the second sheet member 6 can be bonded to the solar cell panel 50 using another bonding layer 9, so that workability is good. .

  Moreover, this 2nd sheet | seat member 6 manufactures the sheet | seat member 6 provided with the process of laminating | stacking another joining layer 9 on a base material, and the process of arrange | positioning the material which forms the 2nd display surface 7a on a base material. Can be provided. When arranging the material, it is advantageous to use the printing technique in that the second sheet member 6 can be stably mass-produced.

  Moreover, according to this Embodiment, as shown in FIG. 3, the 1st sheet | seat member 2 by which the 1st display surface 3a is arrange | positioned, and the solar cell panel 50 arrange | positioned facing the 1st sheet | seat member 2, , A sheet member replacement part 10 used by replacing the first sheet member 2, the sheet member 6 on which the second display surface 7 a is disposed, the sheet member 6, and the solar cell module 1. There is provided a sheet member replacement part 10 including a joining layer 9 that can be peelably joined to the battery panel 50. Note that the bonding layer 9 may be provided on the solar cell panel 50 without being provided on the sheet member replacement part 10.

  In addition, the sheet member replacement part 10 (second sheet member 2) includes the step of removing the material forming the first display surface 3a and the surface from which the material forming the first display surface 3a has been removed. You may manufacture by the process of arrange | positioning the material which forms 2 display surface 7a. In this case, since the material of the sheet member such as the base material is reused, the manufacturing cost can be reduced.

  The display target displayed on the first display surface 3a and the display target displayed on the second display surface 7a may be the same or different. For example, when the 1st display surface 3a deteriorates with time, it is possible to arrange the 2nd display surface 7a which displays the same display object as the 1st display surface 3a. Alternatively, after the display period of the display target on the second display surface 3a has passed, the display target may be changed to the display target on the second display surface 7a.

≪Modification≫
Note that various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above embodiment are used for the parts that can be configured in the same manner as in the above embodiment. A duplicate description is omitted.

  In the above-described embodiment, as shown in FIG. 2, the example in which the colored layer 3 is a solid layer obtained by solid-printing ink on the light diffusion layer 4 a has been described. However, the configuration of the colored layer 3 has been described above. It is not limited to the configuration. FIG. 5 shows another configuration example of the colored layer 3. In the example shown in FIG. 5, the colored layer 3 is provided as a pattern layer formed by dot printing of ink on the light diffusion layer 4a. In particular, the pattern layer shown in FIG. 5 is a dot-shaped pattern layer. By making the colored layer 3 into a dot shape, more light can be guided to the solar cell panel 50 from a region where dots are not provided.

  The method for forming the dot-shaped colored layer 3 is not particularly limited, and examples thereof include an AM (Amplitude Modulation Ion) screening method, an FM (Frequency Modulation Ion) screening method, and a concentration gradation method.

  The AM screening method is a method of adjusting the apparent density by controlling the size of the dots, and can be realized by a gravure printing method, an AM screen printing method, a fixed head type inkjet printing method, or the like. In general, since the control of the dot size is easier than the control of the number of dots, this AM screening method can suppress variations in power generation characteristics between product lots of solar cell modules.

  The FM screening method is a method of adjusting the apparent density by controlling the number of dots, and can be realized by an FM screen printing method, a movable head type ink jet printing method, or the like. In general, the FM screening method can reduce the size of each dot compared to the AM screening method, so that the density of the colored layer 3 can be finely adjusted according to this FM screening method.

  The density gradation method is a method of adjusting the apparent density by controlling the level of dot density, and can be realized by a sublimation thermal transfer printing method, an overprinting ink jet printing method, or the like. For example, the solid colored layer and the colored layer 3 are formed by previously forming a solid colored layer on a portion where the colored layer 3 is formed in advance and forming the dot-shaped colored layer 3 thereon. The dot density can be made high or low. Moreover, according to this method, since the thickness of the colored layer 3 can be reduced, it is possible to prevent light from diffusing on the surface of the colored layer 3.

  In the above-described embodiment, as shown in FIG. 2, an example in which the colored layer 3 is printed on the light diffusion layer 4a has been described. However, the method for forming the colored layer 3 is not limited to the above-described configuration. FIG. 6 shows another method for forming the colored layer 3. In the example shown in FIG. 6, the colored layer 3 is laminated on a resin base material 2c different from the light diffusion layer 4a, and the base material 2c is bonded to the light diffusion layer 4a via the bonding layer 2d. Yes.

  In particular, the bonding layer 2d bonds the base material 2c and the light diffusion layer 4a so as to be peelable. By joining the base material 2c and the light diffusion layer 4a in a peelable manner, the light diffusion layer 4a can be peeled off and another light diffusion layer 4b can be attached to the base material 2c.

  In addition, the bonding layer 2d bonds the base material 2c and the light diffusion layer 4a so that they can be re-bonded. By joining the base material 2c and the light diffusion layer 4a so that they can be rejoined, the light diffusion layer 4a can be peeled off and then joined to the base material 2c again.

  Note that the bonding layer 2d shown in FIG. 6 is detachably bonded to the light diffusion layer 4a and is fixed to the substrate 2c. That is, the bonding layer 2d is a component that is integrally formed with the base material 2c.

  Now, as described above, the base material 2c and the light diffusion layer 4a are detachably joined, so that the light diffusion layer 4a can be peeled off and another light diffusion layer 4b can be attached to the base material 2c. Become. As another light diffusion layer 4b, a layer having a haze value different from that of the light diffusion layer 4a can be adopted. That is, another light diffusion layer 4b is a diffusion layer different from the light diffusion layer 4a.

  As described above, according to the embodiment shown in FIG. 6, the light diffusion layer 4a can be replaced with another light diffusion layer 4b different from the light diffusion layer 4a. In this case, by configuring the light diffusion layer 4a and the different light diffusion layer 4b differently, the light diffusion layer 4a and the different light diffusion layer 4b can be appropriately selected according to the use needs.

  In the above-described embodiment, as shown in FIG. 2, the example in which the first sheet member 2 is bonded to the solar cell panel 50 via the bonding layer 5 has been described. However, the first sheet member 2 and the solar cell are used. The fixing method of the panel 50 is not limited to the configuration described above. 7 to 10 show another fixing method of the first sheet member 2 and the solar cell panel 50. FIG. Among these, in the example shown in FIG. 7, the first sheet member 2 and the solar cell panel 50 are detachably fixed via a fixing member 61.

  The fixing member 61 shown in FIG. 7 is configured as a frame that surrounds the first sheet member 2 and the solar cell panel 50. A plurality of grooves 62 are formed in the frame 61, and the first sheet member 2 and the solar cell panel 50 are fitted into the corresponding grooves 62. By using the groove 62, the first sheet member 2 and the solar cell panel 50 can be detachably mounted on the frame 61.

  Further, the frame 61 holds the solar cell panel 50 and the sheet member 20 with a space therebetween, and an air layer 63 is interposed therebetween. By interposing the air layer 63, the light L 71 diffused in the light diffusion layer 4 a can reach the light receiving surface 50 a of the solar cell panel 50 after spreading in the air layer 63. As a result, it is possible to make the light uniformly reach a wider area of the light receiving surface 50a, and to suppress a decrease in power generation efficiency due to local concentration of light on the light receiving surface 50a.

  Also, the second sheet member 6 can be fitted into the groove 62. That is, by using the groove 62, the second sheet member 6 can be detachably mounted on the frame 61 in place of the first sheet member 2.

  As described above, the embodiment shown in FIG. 7 further includes the fixing member 61 that removably fixes the first sheet member 2 and the solar cell panel 50, and the fixing member 61 is replaced with the first sheet member 2. The two-sheet member 6 and the solar cell panel 50 can be detachably fixed. The fixing member 61 allows the first sheet member 2 and the solar cell panel 50 to be handled as a unit, which is excellent in terms of handleability. Moreover, if the 1st sheet member 2 and the 2nd sheet member 6 are replaced, the 2nd sheet member 6 and the solar cell panel 50 can also be handled as integral.

  In the example illustrated in FIG. 7, an example in which the fixing member 61 is a frame is shown, but the form of the fixing member 61 is not limited to such an example. The fixing member 61 may be any member that detachably fixes the first sheet member 2 or the second sheet member 6 and the solar cell panel 50. As another example, the first sheet member 2 and the solar cell panel 50 are fixed. Covers, or fasteners represented by screws, pins, and buttons can be mentioned.

  FIG. 8 is a cross-sectional view showing a state in which the first sheet member 2 and the second sheet member 6 are interchanged. However, in FIG. 8, although not shown in FIG. 7, a mark 64 provided on the frame 61 is shown.

  As shown in FIG. 8, the second sheet member 6 is provided with a mark 6 d that serves as a mark when the first sheet member 2 is replaced and aligned with the solar cell panel 50. The mark 6d shown in FIG. 8 is provided on the side surface of the light diffusion layer 8a at a position near the other surface 20b of the sheet member 20. By aligning the mark 6d of the second sheet member 6 with the mark 64 of the frame 61 and fixing the second sheet member 6 to the frame 61, the second sheet member 6 and the solar cell panel 50 are easily aligned. be able to.

  Next, with reference to FIG.9 and FIG.10, another modification which fixes a 1st sheet | seat member and a solar cell panel is demonstrated. 9 and 10 are a perspective view and a cross-sectional view, respectively, showing still another modified example for fixing the first sheet member and the solar cell panel. In the example shown in FIGS. 9 and 10, the first sheet member 2 and the solar cell panel 50 are movably supported by a first guide member 66 and a second guide member 67, respectively.

  As shown in FIG. 10, the solar cell panel 50, the first sheet member 2, and the second sheet member 6 are arranged in this order along the normal direction nd of the solar cell panel 50. And while the solar cell panel 50 is fixed to the outer frame 65, the 1st sheet member 2 and the 2nd sheet member 6 are the panels of the solar cell panel 50 by the 1st guide member 66 and the 2nd guide member 67, respectively. It is supported so as to be slidable in a direction along the surface.

  In particular, the first guide member 66 is capable of moving the first sheet member 2 between a facing position P1 facing the solar cell panel 50 and a standby position P2 shifted from a position facing the solar cell panel 50. I support it to be. In the illustrated example, the first guide member 66 is configured as a pair of rails arranged above and below the first sheet member 2. A frame 68 is attached to the periphery of the first sheet member 2 so that a projection (not shown) provided on the frame 68 is guided in a groove 66a provided on the rail of the first guide member 66. It has become.

  The second guide member 67 can move the second sheet member 6 between a facing position P3 facing the solar cell panel 50 and a standby position P4 shifted from a position facing the solar cell panel 50. I support it. In the illustrated example, the second guide member 67 is configured as a pair of rails arranged above and below the second sheet member 6. A frame 69 is attached to the periphery of the second sheet member 6 so that a protrusion (not shown) provided on the frame 69 is guided in a groove 67 a provided on the rail of the second guide member 67. It has become.

  Moreover, in the example shown in FIG.9 and FIG.10, the storage member 71 is provided in the position shifted | deviated from the position which faces the solar cell panel 50. FIG. The accommodating member 71 accommodates the second sheet member 6 so that the second sheet member 6 can be taken out, and can also accommodate the first sheet member 2 in a state where the second sheet member 6 is accommodated or in a state where the second sheet member 6 is removed. It has become.

  In particular, the first guide member 66 and the second guide member 67 extend from the position facing the solar cell panel 50 into the housing member 71. Therefore, when the first sheet member 2 is moved from the facing position P1 to the standby position P2, the first sheet member 2 is stored in the storage member 71, and the second sheet member 6 is moved from the facing position P3 to the standby position P4. The second sheet member 6 is accommodated in the accommodating member 71.

  As described above, according to the embodiment shown in FIGS. 9 and 10, the first sheet member 2 is positioned at the position P <b> 1 facing the solar cell panel 50, the position P <b> 2 shifted from the position facing the solar cell panel 50, The first guide member 66 that supports the second sheet member 6 so as to be movable between the position P3 facing the solar cell panel 50, and the position P4 shifted from the position facing the solar cell panel 50. And a second guide member 67 that is supported so as to be movable between the first and second members. According to such a form, the 1st sheet member 2 and the 2nd sheet member 6 are moved along the 1st guide member 66 and the 2nd guide member 67, respectively. Since the sheet member 6 can be replaced, the replacement operation is facilitated.

  Moreover, according to the form shown in FIG.9 and FIG.10, the storage member 71 which accommodates the 2nd sheet member 6 so that extraction is possible is further provided, and the storage member 71 can also accommodate the 1st sheet member 2. FIG. In this case, the accommodated sheet members 2 and 6 can be protected by accommodating the sheet members 2 and 6 that are waiting without facing the solar cell panel 50 in the accommodating member 71. As a result, it contributes to improving the durability of the sheet members 2 and 6.

  The storage member 71 is not necessarily used together with the first guide member 66 and the second guide member 67. For example, the storage member 71 may be provided in the solar cell module 1 shown in FIGS.

  Moreover, according to the form shown in FIG.9 and FIG.10, the 1st sheet | seat member 2 by which the 1st display surface 3a is arrange | positioned, the solar cell panel 50 arrange | positioned facing the 1st sheet | seat member 2, and 2nd The sun provided with the display sheet 7a and the second sheet member 6 movable between a position P3 facing the solar cell panel 50 and a position P4 shifted from the position facing the solar cell panel 50. A battery module 1 is provided. According to such a form, the light receiving surface 50a of the solar cell panel 50 is made inconspicuous by providing the first sheet member 2 on which the first display surface 3a is disposed so as to face the solar cell panel 50. At the same time, the first display surface 3 a disposed mainly on the first sheet member 2 can be displayed to an observer who observes the solar cell module 1 from the light incident side. Furthermore, by moving the second sheet member 6 between the position P3 facing the solar cell panel 50 and the position P4 shifted from the facing position, the second sheet member 6 is adapted to the needs of display and power generation. Can be used selectively. The light L101 that is not blocked by the first sheet member 2 and the second sheet member 6 reaches the solar cell panel 50 and is used for power generation. As a result, harmony with the surrounding environment is achieved, and both the display by the display surface 3a and the power generation by the solar cell panel 50 are made possible.

  Moreover, according to the form shown in FIG.9 and FIG.10, the 1st sheet | seat member 2 by which the 1st display surface 3a is arrange | positioned, and the solar cell panel 50 arrange | positioned facing the 1st sheet | seat member 2 are provided. The first sheet member 2 is movable between a position P1 facing the solar cell panel 50 and a position P2 shifted from the position facing the solar cell panel 50. According to such a form, the light receiving surface 50a of the solar cell panel 50 is made inconspicuous by moving the first sheet member 2 on which the first display surface 3a is disposed to a position facing the solar cell panel 50. The first display surface 3 a arranged mainly on the first sheet member 2 can be displayed to an observer who observes the solar cell module 1 from the light incident side. On the other hand, the light L101 not blocked by the first sheet member 2 reaches the solar cell panel 50 and is used for power generation. Further, by moving the first sheet member 2 to the position P4 that is shifted from the position facing the solar cell panel 50, the first sheet member 2 is less likely to block light that should enter the solar cell panel 50, A lot of sunlight L101 can be led to the solar cell panel 50. As a result, harmony with the surrounding environment is achieved, and both the display by the display surface 3a and the power generation by the solar cell panel 50 are made possible.

  In the embodiment described above, various instruments may be further provided. FIG. 11 shows an example in which the solar cell module 1 further includes measuring instruments 72 and 73. In the example shown in FIG. 11, a measuring instrument 72 that measures the amount of power generated by the solar cell panel 50 and a measuring instrument 73 that measures the amount of light incident on the first sheet member 2 are provided.

  The measuring device 72 is widely applicable if it is of a type that measures the amount of power generated by the solar cell panel 50. In the example shown in FIG. 11, a battery 74 is electrically connected to the solar cell panel 50 via a circuit 75, and the battery 74 stores energy generated by the solar cell panel 50. And the measuring device 72 which consists of an ammeter is interposed in the circuit 75 which connects this battery 74 and the solar cell panel 50. FIG. By measuring the current flowing through the circuit 75, the amount of power generated by the solar cell panel 50 can be grasped.

The measuring device 73 is widely applicable as long as it is of a type that measures the amount of light incident on the first sheet member 2. In the example shown in FIG. 11, the measuring instrument 73 is configured as an illuminometer.
The illuminance meter 73 faces the same direction as the one surface 2 a at a position shifted from the one surface 2 a of the first sheet member 2. According to the illuminance meter 73, the amount of light incident on the first sheet member 2 can be grasped.

  Moreover, in embodiment mentioned above, as shown in FIG. 2, the 1st sheet member 2 has the colored layer 3 and the light-diffusion layer 4a, and the 2nd sheet member 6 is the colored layer 7, the light-diffusion layer 8a, Although the example which has this was shown, the form of the 1st sheet member 2 and the 2nd sheet member 6 is not limited to the form mentioned above. FIGS. 12 to 23 show modifications of the first sheet member 2 and the second sheet member 6. The sheet member 20 described below is applicable to both the first sheet member 2 and the second sheet member 6. For this reason, each component of the sheet member 20 omits the notations “first” and “second” and attaches other symbols. As an example, the display surface of the sheet member 20 can be applied to both the first display surface 3a and the second display surface 7a, and is given another symbol “12”. Further, the sheet members 2 and 6 described with reference to FIG. 1 to FIG. 11 are also applicable to the first sheet member 2 and the second sheet member 6, and as the first sheet member 2 and the second sheet member 6, It is also possible to apply different types of sheet members in combination.

  12 to 16 are views showing a sheet member 20 as a modified example of the first sheet member 2 and the second sheet member 6. The sheet member 20 shown in FIGS. 12 to 16 has one surface 20a and the other surface 20b as a pair of main surfaces facing each other. The other surface 20b of the sheet member 20 is joined to the solar cell panel 50 via the joining layer 5 so as to be peelable and rejoinable. Therefore, the sheet member 20 can be replaced with another sheet member (second sheet member).

  As shown in FIG. 13, the other surface 20b of the sheet member 20 includes a plurality of orientation adjusting surfaces 21 and a plurality of light transmitting surfaces 22 that are alternately arranged in the first axial direction d1. A display surface 12 for displaying the display target 13 is disposed on the orientation adjustment surface 21. The orientation adjusting surface 21 is provided to support the display surface 12 and adjust the viewing angle at which the display surface 12 can be observed. On the other hand, the light transmission surface 22 is provided to transmit the light L <b> 132 incident on the solar cell module 1 between the adjacent display surfaces 12 and guide it to the solar cell panel 50. In the illustrated example, the plurality of orientation adjustment surfaces 21 are configured identically, and the plurality of light transmission surfaces 22 are also configured identically.

  Each orientation adjustment surface 21 and each light transmission surface 22 extend linearly in a direction intersecting the first axis direction d1 that is the arrangement direction thereof. In particular, in the illustrated example, each orientation adjusting surface 21 and each light transmitting surface 22 are linearly formed in a second axial direction d2 orthogonal to both the first axial direction d1 and the normal direction nd of the solar cell panel 50. It extends. Further, in the example shown in FIG. 13, each orientation adjustment surface 21 and each light transmission surface 22 are arranged so as to be shifted from each other when viewed from the normal direction nd. In the present embodiment, the first axial direction d1 and the second axial direction d2 are along the panel surface of the solar cell panel 50 and are orthogonal to the normal direction nd of the solar cell panel 50. In the illustrated example, the solar cell module 1 is arranged such that the first axial direction d1 is parallel to the vertical direction and the second axial direction d2 is parallel to the horizontal direction.

  Each orientation adjusting surface 21 is inclined with respect to the panel surface of the solar cell panel 50 and is also inclined with respect to the normal direction nd of the solar cell panel 50. That is, each orientation adjustment surface 21 is not parallel to both the panel surface of the solar cell panel 50 and the normal direction nd of the solar cell panel 50. A viewing angle at which the display object 13 provided on the display surface 12 can be observed by inclining the display surface 12 disposed on the orientation adjustment surface 21 together with the orientation adjustment surface 21 with respect to the panel surface of the solar cell panel 50. The first angle range AR1 can be adjusted with a high degree of freedom.

  As shown in FIG. 13, each orientation adjustment surface 21 has one end portion 21 a located on one side (the upper side in FIG. 13 and the upper side in the vertical direction) in the first axial direction d <b> 1 in the first axial direction d <b> 1. The solar cell is separated from the solar cell panel 50 in the normal direction nd of the solar cell panel 50 with respect to the other end portion 21b located on the other side (the lower side in FIG. 13 and the lower side in the vertical direction). The panel 50 is inclined with respect to the panel surface. As can be understood from FIG. 13, such an orientation adjusting surface 21 makes it easier for light to be emitted toward an angle range inclined to the other side with respect to the normal direction nd. That is, the display function from the display surface 12 arranged on the orientation adjustment surface 21 is effectively exhibited when observed from the direction D131 inclined to the other side with respect to the normal direction nd.

  The display surface 12 is disposed along the direction adjustment surface 21 so as to overlap the direction adjustment surface 21. Therefore, the display surface 12 arranged on the orientation adjustment surface 21 also has one end 12a positioned on one side in the first axial direction d1 and the sun 12 more than the other end 12b positioned on the other side in the first axial direction d1. It is inclined with respect to the panel surface of the solar cell panel 50 so as to be separated from the solar cell panel 50 in the normal direction nd of the battery panel 50.

  The light emitted from the solar cell module 1 toward the first angle range AR1 from the display surface 12 makes the display target 13 given to the display surface 12 visible. That is, the display surface 12 is visually recognized from the first angle range AR1, and as a result, the display target 13 formed on the display surface 12 can be observed. In addition, when displaying the display object 13 which moves with the display surface 12, it is easy to use the electricity generated from the solar cell panel 50 for driving.

  FIG. 14 shows an example of the display target 13 formed on the display surface 12. A plurality of display surfaces 12 are arranged in the first axial direction d1, and each display surface 12 extends linearly in a second axial direction d2 orthogonal to the first axial direction d1. Therefore, the display surface 12 located at each position in the first axial direction d1 is provided with the display target element 13a corresponding to the position of the display surface 12 in the first axial direction d1, thereby causing the display surface 12 in the second axial direction d2. The two-dimensional display target 13 can be displayed as a combination of the display target elements 13a formed on the elongated display surfaces 12. In the example shown in FIG. 14, the capital letter “N” of the alphabet is displayed as the display target 13. Thus, since the size of each orientation adjustment surface 21 can be reduced by displaying the display target 13 as a combination of a plurality of display target elements 13a, the first angle range AR1 is expanded or the size of the solar cell module 1 is increased. Even so, a better display object 13 can be observed.

  As described above, the sheet member 20 of the present embodiment can adjust the angular range in which the display target 13 is continuously displayed with a high degree of freedom. Therefore, the solar cell module 1 according to the present embodiment can be used for various purposes. For example, a large panel having a size of several meters to several tens of meters used for an outdoor signboard, a road information bulletin board, an outer wall surface of a building, and the like. Applications such as medium-sized panel use of several tens of centimeters to several meters used for posters, signs, and inner walls of buildings, and small panel use of several centimeters to several tens of centimeters used for table lamps, portable terminals It can be illustrated.

  On the other hand, each light transmission surface 22 positioned between the adjacent orientation adjustment surfaces 21 is inclined with respect to the panel surface of the solar cell panel 50 and is also inclined with respect to the normal direction nd of the solar cell panel 50. . That is, each orientation adjustment surface 21 is not parallel to both the panel surface of the solar cell panel 50 and the normal direction nd of the solar cell panel 50. By tilting the light transmission surface 22 with respect to the panel surface of the solar cell panel 50, the second angle range AR2 that is an angle range in which power generation by the solar cell panel 50 is continuously performed stably is increased. It is possible to adjust with a degree of freedom.

  The angle at which the light transmission surface 22 is inclined with respect to the panel surface of the solar cell panel 50 is different from the angle at which the orientation adjusting surface 21 is inclined with respect to the panel surface of the solar cell panel 50. In particular, in the main cross section of the solar cell module shown in FIG. 13, the light transmission surface 22 is inclined to the opposite side of the orientation adjustment surface 21 with respect to the normal direction nd of the solar cell panel 50. As described above, each orientation adjusting surface 21 is formed on the panel surface of the solar cell panel 50 so that the one end 21a is separated from the solar cell panel 50 in the normal direction nd of the solar cell panel 50 than the other end 21b. It is inclined with respect to it. Accordingly, each light transmission surface 22 has a normal line of the solar cell panel 50 at the other end portion 22b located on the other side in the first axial direction d1 than the one end portion 22a located on one side in the first axial direction d1. It is inclined with respect to the panel surface of the solar cell panel 50 so as to be separated from the solar cell panel 50 in the direction nd. As can be understood from FIG. 13, light from an angle range inclined to one side with respect to the normal direction nd is easily incident on such a light transmission surface 22. Therefore, the light L132 incident on the solar cell module 1 from a direction inclined to one side with respect to the normal direction nd is easily guided by the solar cell panel 50.

  Next, the relationship between the orientation adjustment surface 21 and the light transmission surface 22 will be described. In the main cross section of the solar cell module shown in FIG. 13, the orientation adjustment surface 21 and the light transmission surface 22 adjacent to the orientation adjustment surface 21 on the other side in the first axial direction d1 along the first axial direction d1. The space | interval dt becomes narrow gradually or continuously as it approaches the solar cell panel 50 in the normal line direction nd of the solar cell panel 50. Therefore, the other end 21b of the orientation adjusting surface 21 is closest to the one end 22a of the light transmitting surface 22 located on the other side. In the illustrated embodiment, the other end 21b of the orientation adjusting surface 21 is connected to one end 22a of the light transmitting surface 22 located on the other side. But the other end part 21b of the direction adjustment surface 21 may be spaced apart from the one end part 22a of the light transmission surface 22 located in the other side.

  On the other hand, one end 21a of the orientation adjustment surface 21 is connected to the other end 22b of the light transmission surface 22 adjacent to the orientation adjustment surface 21 on one side in the first axial direction d1. However, the one end portion 21a of the orientation adjustment surface 21 may be separated from the other end portion 22b of the light transmission surface 22 adjacent to the orientation adjustment surface 21 on one side in the first axial direction d1.

  Further, in the main cut surface shown in FIG. 13, the orientation adjustment surface 21 is equal to the length of the light transmission surface 22 adjacent to the orientation adjustment surface 21. Therefore, the ratio of the orientation adjusting surface 21 occupying the other surface 20 b of the sheet member 20 is equal to the ratio of the light transmitting surface 22 occupying the other surface 20 b of the sheet member 20. However, in the main cut surface shown in FIG. 13, the orientation adjustment surface 21 may be different from the length of the light transmission surface 22 adjacent to the orientation adjustment surface 21.

  In the example shown in FIG. 13, the angle θ <b> 1 formed by the orientation adjustment surface 21 with respect to the panel surface of the solar cell panel 50 is equal to the angle θ <b> 2 formed by the light transmission surface 22 with respect to the panel surface of the solar cell panel 50. However, the angle θ1 formed by the orientation adjusting surface 21 with respect to the panel surface of the solar cell panel 50 is determined according to the observation direction by the observer intended to be observed, and the light transmission surface 22 is the solar cell panel 50. The angle θ2 formed with respect to the panel surface is determined according to the incident direction of the external light intended to be taken in. Therefore, the angle θ1 formed by the orientation adjustment surface 21 with respect to the panel surface of the solar cell panel 50 may be different from the angle θ2 formed by the light transmission surface 22 with respect to the panel surface of the solar cell panel 50.

  Moreover, in the example shown in FIG. 13, each direction adjustment surface 21 and each light transmission surface 22 consist of flat surfaces. However, it is not limited to such an example, and each direction adjustment surface 21 and each light transmission surface 22 may consist of curved surfaces. As an example, each orientation adjustment surface 21 and each light transmission surface 22 may form a part of a spherical surface or a curved surface such as a lens surface. More specifically, each orientation adjusting surface 21 and each light transmitting surface 22 may be lens surfaces curved so as to be convex toward the outer side, or concave toward the inner side. A curved lens surface may be used.

  Similarly, in the example shown in FIG. 13, the display surface 12 is a flat surface. However, it is not limited to such an example, and the display surface 12 may be a curved surface. As an example, each display surface 12 may form a part of a spherical surface or a curved surface such as a lens surface. More specifically, each display surface 12 may be a lens surface curved so as to be convex toward the outer side, or may be a lens surface curved so as to be concave toward the inner side. There may be. In this specification, when the display surface 12 is a curved surface, “the display surface 12 is inclined with respect to the plane” means a straight line connecting both end portions 12a and 12b of the display surface 12 in the main cut surface shown in FIG. Is inclined with respect to the plane.

  The method for manufacturing the sheet member 20 may include a step of forming the three-dimensional main body 23 and a step of arranging a material for forming the display surface 12 on the main body 23. Since the sheet member 20 has a three-dimensional shape, it is easier to manufacture the sheet member 20 if the main body portion 23 and the display surface 12 are formed in separate steps. Examples of a method for forming the three-dimensional main body 23 include a molding method using a mold and a three-dimensional printing method using a 3D printer. Examples of the method of arranging the display surface 12 include a method of printing an ink material on the main body 23 using a brush, a rubber roller, an ink jet printer, or the like, and a method of bonding the printed sheet material and the main body 23 together.

  The three-dimensional main body 23 can be reused to save time and cost. As a method of reusing the main body 23, there is a method in which after the material for forming the display surface 12 is removed from the main body 23, the material for forming the display surface 12 'is disposed again on the main body. Examples of a method for removing the material forming the display surface 12 from the main body 23 include a method of disposing a peeling layer (not shown) that bonds the main body 23 and the material in a peelable manner between the main body 23 and the material. For example, after forming a release layer on the main body 23, an ink material or a sheet material is disposed on the release layer, or after forming a release layer on the sheet material, a sheet material with a release layer is formed on the main body 23. Can be pasted. In this case, the main body portion 23 may be provided with a bonding region that can be bonded to the peeling layer and a non-bonding region that cannot be bonded to the peeling layer. A material that is not bonded to the main body portion 23 that is disposed on the non-bonding region by disposing a part of the material on the non-bonding region while disposing most of the material forming the display surface 12 on the bonding region. Peeling is facilitated by peeling the material as a trigger. The release layer can be formed by adding a release agent. Examples of the release agent include silicone materials, fluorine materials, ammonium materials, cured polymers, and inorganic particles.

  Another method for removing the material forming the display surface 12 from the main body 23 includes a method using a material to which the above-described release agent is added as the material for forming the display surface 12. By adding a release agent to the material, the adhesion of the material to the main body portion 23 is lowered, and the material can be peeled from the main body portion 23 once after joining. Since it is easy to add a release agent, this method is suitable when an ink material is used as a material for forming the display surface 12.

  Another method for removing the material forming the display surface 12 from the main body 23 is to use a cleaning liquid that is soluble in the material forming the display surface 12 and insoluble or hardly soluble in the main body 23. A method of using and cleaning the sheet member 20 is exemplified. For example, a polymer that is soluble in a solvent such as an uncured polymer is added to the material for forming the display surface 12, the main body is formed of a polymer that is insoluble or hardly soluble in a solvent such as a cured polymer, and water, alcohol, A solvent such as ester or ketone is used as the cleaning liquid. In addition, since the ink material containing a solvent as a solvent is printed on the main body 23 and the display surface 12 is arranged, the display surface 12 can be removed by washing with a cleaning liquid containing the same solvent as the solvent. This method is suitable when an ink material is used as a material for forming the display surface 12.

  Next, the operation of the solar cell module 1 will be described mainly with reference to FIGS. 15 and 16. The solar cell module 1 is arrange | positioned so that the 1st axial direction d1 which is the sequence direction of the direction adjustment surface 21 and the light transmissive surface 22 follows a perpendicular direction, for example. Specifically, the solar cell module 1 is arranged such that one side in the first axial direction d1 is along the upper side in the vertical direction and the other side in the first axial direction d1 is along the lower side in the vertical direction.

  As well shown in FIG. 15, the display surface 12 disposed on the inclined orientation adjustment surface 21 is easily visible from the front direction of the display surface 12. In the example shown in FIG. 15, the display surface 12 is inclined to one side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50, and thus the first axial direction with respect to the normal direction nd. When the solar cell module 1 is observed from the directions D151, D152, and D153 inclined to the other side in d1, the display surface 12 is easily visible. In this way, by tilting the orientation adjustment surface 21 with respect to the normal direction nd of the solar cell panel 50, the first angle range AR1 serving as a viewing angle at which the display surface 12 positioned on the orientation adjustment surface 21 is observed is set. Can be adjusted with a high degree of freedom. Therefore, the observer can observe the display target 13 with excellent visibility and can display the display target 13 with excellent design.

  On the other hand, the light transmission surface 22 inclined at a different angle from the direction adjustment surface 21 efficiently transmits the light L161, L162, and L163 incident from a direction different from the directions D151, D152, and D153 in which the direction adjustment surface 21 is easily visible. It is possible to capture. In the example shown in FIG. 16, the light transmission surface 22 is inclined to the other side in the first axis direction d1 with respect to the normal direction nd of the solar cell panel 50, and thus the first axis with respect to the normal direction nd. Light L161, L162, and L163 that enter the solar cell module 1 from a direction inclined to one side in the direction d1 can be efficiently captured. The lights L161, L162, and L163 taken into the light transmission surface 22 travel through the air layer 30 and are guided to the solar cell panel 50. In this way, by inclining the light transmission surface 22 with respect to the normal direction nd of the solar cell panel 50 at an angle different from the orientation adjustment surface 21, the solar cell module 1 that is guided to the solar cell panel 50 is obtained. The second angle range AR2 that is the angle range in the incident direction can be adjusted with a high degree of freedom. Therefore, in the solar cell module 1 according to the present embodiment, it is possible to efficiently receive the sunlight that changes the incident direction according to the time zone and the season and use it for power generation in the solar cell panel 50. .

  As described above, according to the sheet member 20 shown in FIGS. 12 to 16, the sheet member 20 having the one surface 20 a and the other surface 20 b facing the one surface 20 a and the other surface 20 b of the sheet member 20. And a plurality of display surfaces 12 each inclined with respect to the panel surface of the solar cell panel 50 are arranged along the uniaxial direction d1. ing. According to such a sheet member 20, since the display surface 12 is inclined with respect to the panel surface of the solar battery panel 50, the inclined display surface 12 is observed from the directions D131 and D151 to D153 which are the front direction. It becomes easy. On the other hand, the light beams L132 and L161 to L163 that enter the solar cell module 1 from directions different from the directions D131 and D151 to D153 that allow the display surface 12 to be easily seen are transmitted between the two adjacent display surfaces 12. Guided to the solar panel 50. As described above, the difference between the observation directions D131 and D151 to D153 from the observer and the incident directions of the external lights L132 and L161 to L163 is used to achieve harmony with the surrounding environment, and display on the display surface 12 and Coexistence of power generation by the solar cell panel 50 is effectively enabled.

  Further, according to the sheet member 20 shown in FIGS. 12 to 16, the other surface 20b of the sheet member 20 includes a plurality of orientation adjusting surfaces 21 and a plurality of light transmitting surfaces 22 arranged alternately in the uniaxial direction d1. The orientation adjustment surface 21 is inclined with respect to the panel surface of the solar cell panel 50, the light transmission surface 22 is inclined with respect to the panel surface of the solar cell panel 50 at an angle different from that of the orientation adjustment surface 21; The display surface 12 is disposed on the orientation adjustment surface 21. According to such a form, since the direction adjustment surface 21 and the light transmission surface 22 are inclined with respect to the panel surface of the solar cell panel 50, the inclined direction adjustment surface 21 and the light transmission surface 22 are respectively in front of each other. It becomes easy to effectively use light incident from the direction. In particular, the light transmission surface 22 is inclined with respect to the panel surface of the solar cell panel 50 at an angle different from that of the orientation adjustment surface 21. For this reason, the display surface 12 arranged on the orientation adjustment surface 21 observes the solar cell module 1 from the directions D131 and D151 to D153 different from the directions in which the light L132 and L161 to L163 that are easily taken into the light transmission surface 22 are inclined. The light transmission surface 22 effectively captures the light L132 and L161 to L163 incident on the solar cell module 1 from a direction different from the directions D131 and D151 to D153 in which the direction adjustment surface 21 is easily visible. . As a result, it is possible to effectively achieve both the display on the display surface 12 and the power generation by the solar cell panel 50.

  By the way, when observing the display object 13 formed on the display surface 12 arranged on the orientation adjustment surface 21, when the solar cell panel 50 is observed through the light transmission surface 22 together with the display object 13, The visibility and designability of the display target 13 will be significantly impaired. Therefore, it is preferable that the first angle range AR1 in which the display surface 12 can be observed is separated from the second angle range AR2 in which the solar cell panel 50 can be observed, that is, does not overlap.

  Therefore, in the solar cell module 1 of the present embodiment, the orientation adjustment surface 21 is inclined to the opposite side of the light transmission surface 22 with respect to the normal direction nd of the solar cell panel 50 in the main cut surface shown in FIG. is doing. According to such a form, the display surface 12 arranged on the orientation adjustment surface 21 is from directions D131 and D151 to D153 that are opposite to the directions in which the light L132 and L161 to L163 are likely to be captured by the light transmission surface 22. The solar cell module 1 can be easily observed selectively when the solar cell module 1 is observed, and the light transmission surface 22 is seen from a direction opposite to the directions D131 and D151 to D153 in which the direction adjustment surface 21 is easily visible. Light L132 and L161 to L163 incident on the light can be selectively captured. Specifically, the orientation adjustment surface 21 is relative to the panel surface of the solar cell panel 50 so that the one end 21a is separated from the solar cell panel 50 in the normal direction nd of the solar cell panel 50 relative to the other end 21b. The light transmission surface 22 is inclined with respect to the panel surface of the solar cell panel 50 so that the other end portion 22b is separated from the solar cell panel 50 in the normal direction nd of the solar cell panel 50 relative to the one end portion 22a. It is inclined. In this case, when the solar cell module 1 is observed from the directions D131 and D151 to D153 inclined to the other side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50, the solar cell module 1 faces more than the light transmission surface 22. The display surface 12 arranged on the adjustment surface 21 can be easily selectively observed. Further, light L132 and L161 to L163 that are incident on the solar cell module 1 from a direction inclined to one side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50 are transmitted through the direction adjustment surface 21 more lightly. The surface 22 can lead to selection.

  That is, according to such a configuration, the first angle range AR1 that is a viewing angle at which the display surface 12 arranged on the orientation adjustment surface 21 can be observed is the first relative to the normal direction nd of the solar cell panel 50. Corresponding to the direction inclined to the other side in the axial direction d1, a second angle range AR2 that is an angle range in the incident direction to the solar cell module 1 that is guided to the solar cell panel 50 via the light transmission surface 22 is provided. This corresponds to a direction inclined to one side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50. In other words, the display surface 12 is observed when the solar cell module 1 is observed from a direction inclined to the other side in the uniaxial direction d1, and light incident on the solar cell module 1 from a direction inclined to the one side in the uniaxial direction d1 is observed. The solar cell panel 50 is passed through between the two adjacent display surfaces 12. In this case, the first angle range AR1 and the second angle range AR2 are easily divided. In other words, the first angle range AR1 and the second angle range AR2 are difficult to overlap.

  As described above, when the overlap between the first angle range AR1 and the second angle range AR2 is reduced, the display function by the display surface 12 and the power generation function by the solar battery panel 50 are more effectively performed without adversely affecting each other. Will come to be. In the present embodiment, it is possible to suppress the observation of the solar cell panel 50 through the light transmission surface 22 together with the display target 13 while observing the display target 13 given to the display surface 12. It becomes possible. In this case, the visibility of the display target 13 and the design of the display target 13 can be improved.

  In particular, in the solar cell module 1 according to the present embodiment, the first angle range AR1 that is a viewing angle at which the display surface 12 can be observed is set in a direction inclined downward in the vertical direction, and is guided to the solar cell panel 50. The second angle range AR2 that is the angle range in the incident direction to the solar cell module 1 is set in a direction inclined upward in the vertical direction. In this case, it is effective when the solar cell module 1 is installed at a position higher than the line of sight in a use as a display plate assumed as a typical use. The observer can observe the display object 13 given to the display surface 12 from the first angle range AR1 in order to observe the solar cell module 1 while looking up upward in the vertical direction. On the other hand, although the incident direction of sunlight changes depending on the time zone and season, it enters the solar cell module 1 while proceeding in a direction inclined downward in the vertical direction or in a substantially horizontal direction. For this reason, sunlight can enter the light transmission surface 22 from the second angle range AR2 and travel toward the solar cell panel 50 even if the incident direction changes according to the time zone or season. Therefore, according to such a form, it is possible to effectively achieve both the reception of sunlight by the solar battery panel 50 and the display by the display surface 12.

  Moreover, according to this Embodiment, in the main cut surface of the solar cell module 1, the direction adjustment surface 21 and the light transmission surface 22 adjacent to the direction adjustment surface 21 on the other side in the first axial direction d1. The interval dt along the first axial direction d1 becomes narrower as the solar cell panel 50 is approached in the normal direction nd of the solar cell panel 50. According to such a configuration, the display surface 12 disposed on the orientation adjustment surface 21 blocks light that should be incident on the light transmission surface 22, or the light transmission surface 22 is disposed on the orientation adjustment surface 21. It is possible to effectively suppress the observation of the displayed display surface 12 from being interrupted. For this reason, when the display surface 12 observes the solar cell module 1 from the direction within the first angle range AR1, the display function can be more reliably exhibited. Further, the light transmission surface 22 can more reliably guide light incident on the solar cell module 1 from the second angle range AR2 to the solar cell panel 50.

  By the way, Table 1 below shows the south-middle altitude (°) for each season in major cities in some countries of the world. It is preferable that the south and middle altitudes of the equinox in the major cities of the country where the use is assumed be included in the second angle range AR2. This is because there is a high possibility that it can be used effectively in that country. For example, when the country assumed to be used is Japan, the altitude from 54 ° to 56 ° may be included in the second angle range AR2. Furthermore, it is preferable that an altitude from 49 ° to 61 ° is included in the second angle range AR2, since there is a high possibility that it can be used effectively in many countries in the world. In addition, it is more preferable that the second angle range AR2 includes a range from the southern middle altitude of the summer solstice to the southern middle altitude of the winter solstice in the main cities of the country assumed to be used. This is because there is a high possibility that it can be used effectively throughout the year in that country. For example, when the country assumed to be used is Japan, the altitude from 31 ° to 79 ° may be included in the second angle range AR2. Furthermore, it is preferable that an altitude of 25 ° to 84 ° is included in the second angle range AR2, since there is a high possibility that it can be used effectively in many countries in the world. In order to make it easier for the desired altitude to be included in the second angle range AR2, it is preferable that the angle range of the second angle range AR2 is continuous by about 45 ° or more. However, it is possible to make the desired altitude fall within the second angle range AR2 by placing the solar cell module 1 at an angle. On the other hand, the upper limit of the angle range of the second angle range AR2 may be appropriately set in balance with the first angle range AR1, but by setting the upper limit to less than about 135 °, the solar cell module 1 of the present embodiment. The features can be demonstrated more.

  Next, another modification of the first sheet member 2 and the second sheet member 6 will be described with reference to FIG. In the sheet member 20 shown in FIG. 17, one surface 20a includes a plurality of orientation adjustment surfaces 21 and a plurality of light transmission surfaces 22 arranged alternately in the first axial direction d1. A display surface 12 for displaying the display target 13 is disposed on the orientation adjustment surface 21.

  Each orientation adjustment surface 21 and each light transmission surface 12 are orthogonal to both the first axis direction d1 and the normal line direction nd, more specifically, the direction intersecting the first axis direction d1 that is the arrangement direction. It extends linearly in the second axial direction d2. Each orientation adjustment surface 21 and each light transmission surface 12 are inclined at different angles with respect to the sheet surface of the sheet member 20, in other words, the panel surface of the solar cell panel 50, and with respect to the normal direction nd of the sheet member 20. However, they are inclined at different angles.

  Next, the operation of the solar cell module 1 shown in FIG. 17 will be described.

  As well shown in FIG. 17, the display surface 12 disposed on the inclined orientation adjustment surface 21 is easily visible from the front direction of the display surface 12. In the example shown in FIG. 17, the display surface 12 is inclined to one side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50, and thus the first axial direction with respect to the normal direction nd. It becomes easy to visually recognize the display surface 12 when the solar cell module 10 is observed from the direction D171 inclined to the other side in d1.

  On the other hand, the light transmission surface 22 inclined at an angle different from the orientation adjustment surface 21 can efficiently capture the light L172 incident from a direction different from the direction D171 in which the orientation adjustment surface 21 is easily visible. In the example shown in FIG. 17, the light transmission surface 22 is inclined to the other side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50, and thus the first axis with respect to the normal direction nd. It becomes possible to efficiently take in the light L172 incident on the solar cell module 1 from the direction inclined to one side in the direction d1. The light L <b> 172 taken into the light transmission surface 22 travels through the sheet member 20 and is guided to the solar cell panel 50.

  As described above, according to the embodiment shown in FIG. 17, the sheet member 20 having the one surface 20 a and the other surface 20 b facing the one surface 20 a and the other surface 20 b of the sheet member 20 are disposed opposite to each other. The sheet member 20 includes a plurality of display surfaces 12 that are inclined with respect to the panel surface of the solar cell panel 50 and arranged along the uniaxial direction d1. According to such a sheet member 20, since the display surface 12 is inclined with respect to the panel surface of the solar cell panel 50, the inclined display surface 12 is easily observed from the direction D <b> 171 that is the front direction. On the other hand, the light beam L 172 incident on the solar cell module 1 from a direction different from the direction D 171 in which the display surface 12 is easily visible is transmitted between the two adjacent display surfaces 12 and guided to the solar cell panel 50. In this way, the difference between the observation direction D171 from the observer and the incident direction of the external light L172 is utilized to achieve harmony with the surrounding environment, and at the same time, display on the display surface 12 and power generation by the solar cell panel 50 are compatible. Is effectively possible.

  Further, according to the present embodiment, the one surface 20a of the sheet member 20 includes the plurality of orientation adjustment surfaces 21 and the plurality of light transmission surfaces 22 that are alternately arranged in the uniaxial direction d1, and the orientation adjustment surface. 21 is inclined with respect to the panel surface of the solar cell panel 50, and the light transmission surface 22 is inclined with respect to the panel surface of the solar cell panel 50 at an angle different from the orientation adjustment surface 21, and is displayed on the orientation adjustment surface 21. Surface 12 is disposed. According to such a form, since the direction adjustment surface 21 and the light transmission surface 22 are inclined with respect to the panel surface of the solar cell panel 50, the inclined direction adjustment surface 21 and the light transmission surface 22 are respectively in front of each other. It becomes easy to effectively use light incident from the direction. In particular, the light transmission surface 22 is inclined with respect to the panel surface of the solar cell panel 50 at an angle different from that of the orientation adjustment surface 21. For this reason, the display surface 12 arranged on the orientation adjustment surface 21 is easily visible when the solar cell module 1 is observed from a direction D171 different from the direction in which the light L172 that is easily taken into the light transmission surface 22 is inclined, The light transmission surface 22 effectively takes in the light L <b> 172 incident on the solar cell module 1 from a direction different from the direction D <b> 171 in which the direction adjustment surface 21 is easily visible. As a result, it is possible to effectively achieve both the display on the display surface 12 and the power generation by the solar cell panel 50.

  Next, another modification of the solar cell module 1 will be described with reference to FIG. In the example shown in FIG. 18, the other surface 20b of the sheet member 20 includes a plurality of lens surfaces 31 arranged along the first axial direction d1, and each display surface 12 has a corresponding lens surface 31. Arranged along part. Each lens surface 31 and the display surface 12 extend along a direction intersecting the first axial direction d1, more specifically along a second axial direction d2 orthogonal to the first axial direction d1.

  Here, of both end portions of the lens surface 31, an end portion located on one side (the upper side in FIG. 18 and the upper side in the vertical direction) in the first axial direction d1 is referred to as one end portion 31a. In d1, the end located on the other side (the lower side in FIG. 18 and the lower side in the vertical direction) is called the other end 31b, and the normal line direction of the solar cell panel 50 from the one end 31a and the other end 31b. A point farthest along nd is referred to as a top portion 31c. The top portion 31 c of the present embodiment is a point farthest from the solar cell panel 50 in the lens surface 31. The optical axis od of the lens surface 31 passes through the top portion 31c.

  Each display surface 12 shown in FIG. 18 covers part or all of the region between the one end 31a and the top 31c of the corresponding lens surface 31, and between the other end 31b and the top 31c. Does not cover the area. For this reason, the display surface 12 has the one end portion 12a positioned on one side in the first axial direction d1 and the normal direction of the solar cell panel 50 than the other end portion 12b positioned on the other side in the first axial direction d1. It is inclined with respect to the panel surface of the solar cell panel 50 so as to be separated from the solar cell panel 50 at nd.

  As described above, according to the embodiment shown in FIG. 18, the sheet member 20 having the one surface 20 a and the other surface 20 b facing the one surface 20 a and the other surface 20 b of the sheet member 20 are disposed opposite to each other. The sheet member 20 includes a plurality of display surfaces 12 that are inclined with respect to the panel surface of the solar cell panel 50 and arranged along the uniaxial direction d1. According to such a sheet member 20, since the display surface 12 is inclined with respect to the panel surface of the solar cell panel 50, the inclined display surface 12 is easily observed from the direction D181 that is the front direction. On the other hand, the light beam L182 incident on the solar cell module 1 from a direction different from the direction D181 in which the display surface 12 is easily visible is transmitted between the two adjacent display surfaces 12 and guided to the solar cell panel 50. In this way, the difference between the observation direction D181 from the observer and the incident direction of the external light L182 is utilized to achieve harmony with the surrounding environment, and at the same time, display on the display surface 12 and power generation by the solar cell panel 50 are compatible. Is effectively possible.

  In addition, according to the present embodiment, the other surface 20b of the sheet member 20 includes a plurality of lens surfaces 31 arranged along the uniaxial direction d1, and each display surface 12 has a corresponding lens surface 31. It is arranged along a part of. In this case, since it can implement | achieve by arrange | positioning the display surface 12 in a part of each lens surface 31, manufacture of the solar cell module 1 is easy.

  In the solar cell module 1 shown in FIG. 18, an example in which the lens surface 31 is a convex lens that protrudes toward the solar cell panel 50 is shown, but the form of the lens surface 31 is not limited to such an example. FIG. 19 shows an example in which the lens surface 31 is a concave lens that is recessed toward the one surface 20a.

  Each display surface 12 shown in FIG. 19 covers part or all of the region between the other end portion 31b and the top portion 31c of the corresponding lens surface 31, and between the one end portion 31a and the top portion 31c. Does not cover the area. For this reason, the display surface 12 has the one end portion 12a positioned on one side in the first axial direction d1 and the normal direction of the solar cell panel 50 than the other end portion 12b positioned on the other side in the first axial direction d1. It is inclined with respect to the panel surface of the solar cell panel 50 so as to be separated from the solar cell panel 50 at nd. Even if it is such a form, there can exist an effect similar to the above-mentioned form.

  Next, another modification of the solar cell module 1 will be described with reference to FIG. In the example shown in FIG. 20, one surface 20a of the sheet member 20 includes a plurality of lens surfaces 31 arranged along the first axial direction d1, and each display surface 12 has a corresponding lens surface 31. Arranged along part. Each lens surface 31 and the display surface 12 extend along a direction intersecting the first axial direction d1, more specifically along a second axial direction d2 orthogonal to the first axial direction d1.

  Here, of both end portions of the lens surface 31, an end portion located on one side (the upper side in FIG. 20 and the upper side in the vertical direction) in the first axial direction d1 is referred to as one end portion 31a. The end located on the other side (the lower side in FIG. 20 and the lower side in the vertical direction) at d1 is called the other end 31b, and the normal direction of the solar cell panel 50 from the one end 31a and the other end 31b A point farthest along nd is referred to as a top portion 31c. The top portion 31 c of the present embodiment is a point farthest from the solar cell panel 50 in the lens surface 31. The optical axis od of the lens surface 31 passes through the top portion 31c.

  Each display surface 12 shown in FIG. 20 covers part or all of the region between the other end portion 31b and the top portion 31c of the corresponding lens surface 31, and between the one end portion 31a and the top portion 31c. Does not cover the area. For this reason, the display surface 12 has the one end portion 12a positioned on one side in the first axial direction d1 and the normal direction of the solar cell panel 50 than the other end portion 12b positioned on the other side in the first axial direction d1. It is inclined with respect to the panel surface of the solar cell panel 50 so as to be separated from the solar cell panel 50 at nd.

  As described above, according to the embodiment shown in FIG. 20, the sheet member 20 having one surface 20 a and the other surface 20 b facing the one surface 20 a and the other surface 20 b of the sheet member 20 are disposed facing each other. The sheet member 20 includes a plurality of display surfaces 12 that are inclined with respect to the panel surface of the solar cell panel 50 and arranged along the uniaxial direction d1. According to such a solar cell module 1, since the display surface 12 is inclined with respect to the panel surface of the solar cell panel 50, the inclined display surface 12 is easily observed from the direction D201 which is the front direction. On the other hand, the light beam L202 incident on the solar cell module 1 from a direction different from the direction D201 in which the display surface 12 is easily visible is transmitted between the two adjacent display surfaces 12 and guided to the solar cell panel 50. In this way, the difference between the observation direction D201 from the observer and the incident direction of the external light L202 is utilized to achieve harmony with the surrounding environment, and at the same time, display on the display surface 12 and power generation by the solar cell panel 50 are compatible. Is effectively possible.

  Further, according to the present embodiment, the one surface 20a of the sheet member 20 includes a plurality of lens surfaces 31 arranged along the uniaxial direction d1, and each display surface 12 has a corresponding lens surface 31. It is arranged along a part of. In this case, since it can implement | achieve by arrange | positioning the display surface 12 in a part of each lens surface 31, manufacture of the solar cell module 1 is easy.

  In the solar cell module 1 shown in FIG. 20, an example in which the lens surface 31 is formed of a convex lens that protrudes toward the side opposite to the solar cell panel 50 is shown, but the form of the lens surface 31 is limited to such an example. Not. FIG. 21 shows an example in which the lens surface 31 is a concave lens that is recessed toward the other surface 20b.

  Each display surface 12 shown in FIG. 21 covers part or all of the region between the one end portion 31a and the top portion 31c of the corresponding lens surface 31, and between the other end portion 31b and the top portion 31c. Does not cover the area. For this reason, the display surface 12 has the one end portion 12a positioned on one side in the first axial direction d1 and the normal direction of the solar cell panel 50 than the other end portion 12b positioned on the other side in the first axial direction d1. It is inclined with respect to the panel surface of the solar cell panel 50 so as to be separated from the solar cell panel 50 at nd. Even if it is such a form, there can exist an effect similar to the above-mentioned form.

  Next, still another modification of the solar cell module 1 will be described with reference to FIG. In the example shown in FIG. 22, the sheet member 20 constitutes a louver sheet in which a plurality of display surfaces 12 are arranged. One surface 20 a and the other surface 20 b of the sheet member 20 shown in FIG. 22 are flat surfaces, and a plurality of display surfaces 12 are arranged in the sheet member 20. The plurality of display surfaces 12 are arranged along the first axial direction d1 and extend in a direction intersecting the first axial direction d1, more specifically, in a second axial direction d2 perpendicular to the first axial direction d1. A region between the two adjacent display surfaces 12 in the sheet member 20 defines a light transmission region 25.

  A support sheet 40 is bonded to one surface 20 a of the sheet member 20. The support sheet 40 is provided to reinforce the sheet member 20 and support the sheet member 20.

  Next, the operation of the solar cell module 1 will be described.

  As well shown in FIG. 22, the display surface display surface 12 inclined with respect to the panel surface of the solar cell panel 50 is easily visually recognized from the front direction of the display surface 12. In the example shown in FIG. 22, the display surface 12 is inclined to one side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50, and thus the first axial direction with respect to the normal direction nd. When the solar cell module 1 is observed from the direction D221 inclined to the other side in d1, the display surface 12 is easily visually recognized.

  On the other hand, the light L222 that travels in the sheet member 20 from the direction in which the angle formed with respect to the display surface 12 is smaller is less likely to be received by the display surface 12. Accordingly, the light L222 that effectively passes through the light transmission region 25 without being blocked by the inclined display surface 12 is inclined to the opposite side to the direction D221 in which the display surface 12 is easily visible as shown in FIG. It becomes the light L222. That is, light that enters the sheet member 20 while traveling to the other side in the first axial direction d1, in the example illustrated, light L222 that enters the sheet member 20 while traveling downward in the vertical direction passes through the light transmission region 25. Thus, the solar cell panel 50 is easily guided.

  As described above, according to the embodiment shown in FIG. 22, the sheet member 20 having the one surface 20 a and the other surface 20 b facing the one surface 20 a and the other surface 20 b of the sheet member 20 are disposed facing each other. The sheet member 20 includes a plurality of display surfaces 12 that are inclined with respect to the panel surface of the solar cell panel 50 and arranged along the uniaxial direction d1. According to such a solar cell module 1, since the display surface 12 is inclined with respect to the panel surface of the solar cell panel 50, the inclined display surface 12 is easily observed from the direction D221 that is the front direction. On the other hand, the light beam L222 incident on the solar cell module 1 from a direction different from the direction D221 in which the display surface 12 is easily visible is transmitted between the two adjacent display surfaces 12 and guided to the solar cell panel 50. In this way, the difference between the observation direction D221 from the observer and the incident direction of the external light L222 is used to achieve harmony with the surrounding environment, and at the same time, display on the display surface 12 and power generation by the solar cell panel 50 are compatible. Is effectively possible.

  Further, according to the present embodiment, the plurality of display surfaces 12 are disposed inside the sheet member 20. In this case, it is advantageous in that the display surface 12 can be protected by the material forming the sheet member 20.

  Next, still another modification of the solar cell module 1 will be described with reference to FIG. In the example illustrated in FIG. 23, the solar cell module 1 includes a sheet-like sheet member 20 and a solar cell panel 50 disposed to face the other surface 20 b of the sheet member 20.

  One surface 20a of the sheet member 20 includes a plurality of lens surfaces 31 arranged in the first axial direction d1. The plurality of lens surfaces 31 are arranged such that their optical axes od are parallel to each other. In particular, in the illustrated example, the lens surface 31 is arranged such that the optical axis od thereof is parallel to the normal direction nd of the solar cell module 1.

  The lens surface 31 constitutes a so-called lenticular lens or cylindrical lens. In other words, each lens surface 31 extends linearly in a direction intersecting the first axis direction d1 that is the arrangement direction, more specifically in a second direction d2 orthogonal to the first axis direction d1.

  A plurality of display surfaces 12 are arranged in the sheet member 20 along the first axial direction d <b> 1 corresponding to the lens surface 31. As shown in FIG. 23, each display surface 12 is arranged so as to at least partially face the corresponding lens surface 31 along the normal direction nd. In the present embodiment, similarly to the lens surface 31, the display surface 12 is in a direction intersecting the first axis direction d1 that is the arrangement direction, more strictly, in a second direction d2 orthogonal to the first axis direction d1. It extends in a straight line. Each display surface 12 is inclined with respect to the panel surface of the solar cell panel 50 and the normal direction nd of the solar cell panel 50.

  Next, the effect | action of the solar cell module 1 by this Embodiment is demonstrated.

  As well shown in FIG. 23, the inclined display surface 12 is easily visible from the front direction of the display surface 12. In the present embodiment, since the display surface 12 is inclined to one side in the first axial direction d1 with respect to the normal direction nd of the solar cell panel 50, the first axial direction d1 with respect to the normal direction nd. When the solar cell module 1 is observed from the directions D231 and D232 inclined to the other side, the display surface 12 is easily visually recognized. In particular, even when the solar cell module 1 is observed from the direction D232 that is largely inclined to the other side in the first axial direction d1 with respect to the normal direction nd, the incident lens surface is caused by the light condensing action of the lens surface 31. The display surface 12 facing 31 can be observed. If a plurality of display surfaces 12 are arranged on the other surface 20b of the sheet member 20 along the other surface 20b, as shown by a dotted line in FIG. 23, the display surface 12 is adjacent to the lens surface 31 to be observed. The display surface 12 facing the lens surface 31 is observed, and the intended display function may not be exhibited. That is, by tilting the display surface 12 with respect to the panel surface of the solar battery panel 50, the first angle range AR1 serving as a viewing angle at which the display surface 12 is observed, in other words, emission of light from the display surface 12 is displayed. The first angle range AR1 that is the angle range of the direction can be adjusted with a high degree of freedom.

  On the other hand, the light flux L233 traveling in the sheet member 20 from the direction in which the angle formed with respect to the display surface 12 is smaller is less likely to be received by the display surface 12. From this, the light beam L233 toward the solar cell panel 50 without being blocked by the inclined display surface 12 is inclined to the opposite side to the directions D231 and D232 in which the display surface 12 can be effectively observed, as shown in FIG. Light flux L233. In other words, the light incident on the lens surface 31 while proceeding to the other side in the first axial direction d1, that is, in the illustrated example, the light flux L233 incident on the lens surface 31 while proceeding downward in the vertical direction is between the two display surfaces 12. It becomes easy to be guided to the solar cell panel 50 through the region 60.

  As described above, according to the embodiment shown in FIG. 23, the sheet member 20 having one surface 20a and the other surface 20b facing the one surface 20a, and the other surface 20b of the sheet member 20 are disposed opposite to each other. The sheet member 20 includes a plurality of display surfaces 12 that are inclined with respect to the panel surface of the solar cell panel 50 and arranged along the uniaxial direction d1. According to such a solar cell module 1, since the display surface 12 is inclined with respect to the panel surface of the solar cell panel 50, the inclined display surface 12 is easily observed from the directions D231 and D232 that are the front direction. Become. On the other hand, the light beam L233 incident on the solar cell module 1 from another direction different from the directions D231 and D232 in which the display surface 12 can be easily viewed is transmitted between the two adjacent display surfaces 12 and guided to the solar cell panel 50. It is burned. In this way, the difference between the observation directions D231 and D232 from the observer and the incident direction of the external light L233 is used to achieve harmony with the surrounding environment, and display on the display surface 12 and power generation by the solar cell panel 50. Can be effectively achieved.

  Further, according to the present embodiment, the plurality of display surfaces 12 are disposed inside the sheet member 20. In this case, it is advantageous in that the display surface 12 can be protected by the material forming the sheet member 20.

  Further, the one surface 20a of the sheet member 20 includes a plurality of lens surfaces 31 arranged in a uniaxial direction d1, and the lens surface 31 guides light coming from a certain direction D231, D232 to the display surface 12, Light L 233 incident from another direction different from certain directions D 231 and D 232 is transmitted between two adjacent display surfaces 12 and guided to the solar cell panel 50. According to such a configuration, the first angle range AR1 that is the viewing angle at which the display surface 12 is observed and the second angle range AR2 in which power generation by the solar cell panel 50 is effectively performed by the light collecting action of the lens surface 31. Can be adjusted with a high degree of freedom.

  Thus, in the sheet member 20 shown in FIGS. 12 to 23, a plurality of display surfaces 12 each inclined with respect to the panel surface of the solar cell panel 50 are arranged along the uniaxial direction. The display function by the display surface 12 and the power generation function by the solar battery panel 50 change according to the inclination angle of the solar cell. Therefore, the first sheet member 2 and the second sheet member 6 that are used in combination with the sheet member 20 having the display surface 12 with different angles can change the display function and the power generation function according to needs. ,It is valid. That is, the first sheet member 2 has a plurality of first display surfaces 3 a that are inclined with respect to the panel surface of the solar cell panel 50, arranged along the uniaxial direction d <b> 1. In the state where the first sheet member 2 is replaced, a plurality of second display surfaces 7a each inclined with respect to the panel surface of the solar cell panel 50 are arranged along the uniaxial direction d1, and the second sheet member 6 is inclined with respect to the panel surface of the solar cell panel 50 at an angle different from the angle formed by the first display surface 3a of the first sheet member 2 with respect to the panel surface of the solar cell panel 50. Thus, it is effective to configure the solar cell module 1.

<< Second Embodiment >>
Next, a second embodiment will be described with reference to FIGS. FIG.24 and FIG.25 is the perspective view and sectional drawing which respectively show the solar cell module 1 in 2nd Embodiment. The second embodiment described with reference to FIGS. 24 and 25 is different in that the first sheet member 2 is tiled, but the other configurations are the same as the first embodiment and its modifications. It can be configured similarly. In the following description of the second embodiment and the drawings used in the following description, the parts that can be configured in the same manner as the above-described aspects are the same as the corresponding parts in the above-described first embodiment and its modifications. The same reference numerals as those used are used, and redundant description is omitted.

  In the example shown in FIGS. 24 and 25, the sheet member 200 corresponds to the first sheet member 2 shown in FIGS. 1 to 11 and the sheet member 20 shown in FIGS. The solar cell module 1 shown in FIGS. 24 and 25 has an outer frame 76 that surrounds the sheet member 200 and the solar cell panel 50, and the sheet member 200 is tiled in the outer frame 76. That is, the sheet member 200 is configured by arranging a plurality of sheet parts 201 side by side. In the illustrated example, the plurality of sheet components 201 are arranged in a square pattern in a plane parallel to the panel surface of the solar cell panel 50. More specifically, three rows of three sheet components 201 arranged in the uniaxial direction d3 are arranged in three rows in the other axial direction d4 orthogonal to the uniaxial direction d3, and a total of nine sheet components 201 are provided.

  Each sheet component 201 is affixed to the solar cell panel 50 via the bonding layer 5 so as to be peelable and re-bondable. Therefore, each sheet component 201 can be replaced independently of the other sheet components 201.

  As described above, according to the present embodiment, the sheet member 200 including the display surface 3a and the solar cell panel 50 disposed so as to face the sheet member 200 are provided. Some are replaceable. In this case, even if a part of the sheet member 200 is damaged, it can be restored by replacing the damaged part. From the viewpoint of stably mass-producing such a sheet member 2, the sheet member 200 is configured by arranging a plurality of sheet components 201, and each of the sheet components 201 can be replaced independently of the other sheet components 201. It is good to be.

DESCRIPTION OF SYMBOLS 1 Solar cell module 2 1st sheet | seat member 2c Base material 3 Colored layer 3a 1st display surface 3b 1st display object 4a Light diffusion layer 4b Another light diffusion layer 5 Bonding layer 6 2nd sheet member 6c Base material 6d Mark 7 Coloring Layer 7a Second display surface 7 Second display object 8a Light diffusion layer 9 Another bonding layer 10 Sheet member replacement component 12 Display surface 20, 200 Sheet member 21 Orientation adjustment surface 22 Light transmission surface 201 Sheet component 31 Lens surface 50 Solar cell Panel 50a Light-receiving surface 61 Fixing member 66 First guide member 67 Second guide member 71 Storage members 72, 73 Measuring instrument

Claims (14)

A first sheet member on which the first display surface is disposed;
A solar cell panel disposed to face the first sheet member;
With
The first sheet member can be replaced with a second sheet member on which a second display surface is disposed,
The first sheet member is a solar cell module in which a plurality of first display surfaces that are inclined with respect to the panel surface of the solar cell panel are arranged along a uniaxial direction.   The solar cell module according to claim 1, wherein the first sheet member transmits at least part of incident light and guides the light to the solar cell panel. The first sheet member has a colored layer having light transmittance,
The solar cell module according to claim 1 or 2, wherein the colored layer forms the first display surface.   The solar cell module according to claim 3, wherein the first sheet member has a light diffusion layer provided closer to the solar cell panel than the colored layer.   The solar cell module according to claim 4, wherein the light diffusion layer is replaceable with another light diffusion layer different from the light diffusion layer. In the second sheet member, a plurality of second display surfaces that are inclined with respect to the panel surface of the solar cell panel are arranged along a uniaxial direction in a state where the second sheet member is replaced with the first sheet member. ,
The second display surface of the second sheet member is at an angle different from the angle formed by the first display surface of the first sheet member with respect to the panel surface of the solar cell panel, and the panel surface of the solar cell panel The solar cell module according to any one of claims 1 to 5, wherein the solar cell module is inclined with respect to.   The solar cell module according to any one of claims 1 to 6, wherein the first sheet member is detachably bonded to the solar cell panel via a bonding layer.   The solar cell module according to claim 7, wherein the bonding layer bonds the first sheet member and the solar cell panel so as to be peelable and re-bondable.   The solar cell module according to claim 7 or 8, wherein the second sheet member is provided with another bonding layer that can be detachably bonded to the solar cell panel. A fixing member that removably fixes the first sheet member and the solar cell panel;
7. The fixing member according to any one of claims 1 to 6, wherein the fixing member is configured to removably fix the second sheet member and the solar cell panel in place of the first sheet member. The solar cell module described. The solar cell module according to claim 10 , wherein the second sheet member is provided with a mark that serves as a mark when the second sheet member is replaced with the first sheet member and aligned with the solar cell panel. A first guide member that supports the first sheet member so as to be movable between a position facing the solar cell panel and a position shifted from the position facing the solar cell panel;
A second guide member that supports the second sheet member so as to be movable between a position facing the solar cell panel and a position shifted from the position facing the solar cell panel;
The solar cell module according to any one of claims 1 to 6, further comprising: A storage member for detachably storing the second sheet member;
The solar cell module according to any one of claims 1 to 12 , wherein the storage member can also store the first sheet member. Instrument for measuring the amount of power generation by the solar panel, and comprises at least one instrument for measuring the amount of light incident on the first sheet member, according to any one of claims 1 to 13 Solar cell module.

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