JP6497256B2 - Solar cell composite display - Google Patents

Description

  The present invention relates to a solar cell composite-type display body that includes a display surface for performing display and can also perform power generation using a solar cell panel.

  As an example of such a solar cell composite display, a traffic sign provided with a solar cell panel is described in Patent Document 1. In the traffic sign described in Patent Document 1, it is possible to store the power generated by the solar panel in the daytime and use the stored power as a lighting power source to improve nighttime visibility and daytime warning effect. it can. Further, since a wiring cable or the like 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 composite display 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. The purpose is to do.

  A solar cell composite display according to the present invention includes a louver sheet including a first surface and a second surface facing each other and having a plurality of display surfaces arranged in a uniaxial direction therein, and a first surface of the louver sheet. And a support sheet that supports the louver sheet, and a solar cell panel that is disposed to face the second surface of the louver sheet, and the display surface with respect to the sheet surface of the louver sheet The light incident on the support sheet from a certain direction travels toward the solar cell panel through a region between two adjacent display surfaces, and is different from the certain direction. The light incident on the support sheet from the light reaches the display surface.

  In the solar cell composite display according to the present invention, the first surface of the louver sheet may be flat.

  In the solar cell composite display according to the present invention, the louver sheet includes a main body provided by arranging a plurality of cuts cut from the solar cell panel side toward the support sheet side in the first axial direction. , Each of which is disposed in a corresponding notch of the main body portion and in which a colored pigment is dispersed, and a corresponding display surface may be defined by the surface of each filling portion.

  In the solar cell composite display according to the present invention, the louver sheet includes a main body provided by arranging a plurality of cuts cut from the solar cell panel side toward the support sheet side in the first axial direction. , Each of which includes a plurality of ink materials and a plurality of embedded portions disposed in corresponding cuts in the main body portion, and a corresponding display surface may be defined by the surface of each ink material.

  In the solar cell composite display according to the present invention, the support sheet includes a support surface bonded to the first surface of the louver sheet, and an opposing surface facing the support surface, and the support surface and the opposing surface The surfaces may be parallel to each other and flat.

  In the solar cell composite display according to the present invention, when viewed from the normal direction of the louver sheet, the plurality of display surfaces may be shifted from each other.

  ADVANTAGE OF THE INVENTION According to this invention, while aiming at harmony with the surrounding environment, the solar cell composite type display body 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 perspective view showing a solar cell composite display according to an embodiment. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a diagram for explaining the operation of the solar cell composite display body in the same cross section as FIG. 2. FIG. 4 is a diagram for explaining the operation of the solar cell composite display body in the same cross section as FIG. FIG. 5 is a diagram for explaining a method for manufacturing a solar cell composite display. FIG. 6 is a diagram for explaining a method for manufacturing a solar cell composite display. FIG. 7 is a diagram for explaining a method for manufacturing a solar cell composite display. FIG. 8 is a diagram for explaining a method of manufacturing a solar cell composite display. FIG. 9 is a cross-sectional view showing a modification of the solar cell composite display shown in FIG. FIG. 10 is a diagram illustrating an example of a display target displayed on the solar cell composite display body illustrated in FIG. 9.

  Hereinafter, an embodiment of the present invention 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 to 10 are diagrams for explaining an embodiment. 1 and 2 are perspective views or longitudinal sectional views showing the configuration of the solar cell composite display body 10, and FIGS. 3 and 4 are diagrams for explaining the operation of the solar cell composite display body 10. FIGS. 5-8 is a figure for demonstrating an example of the manufacturing method of a solar cell composite display body.

  The solar cell composite display 10 described here exhibits both a predetermined display function and a power generation function using external light. In the solar cell composite display 10 shown in FIGS. 1 and 2, a plurality of display surfaces 25 arranged in the first axial direction d <b> 1 are provided on the light incident side with respect to the solar cell panel 50. When the solar cell composite display body 10 is observed from the direction D21 within a certain angle range AR1, the display surface 25 is mainly observed. Therefore, the display surface 25 exhibits a display function for an observer who observes the solar cell composite display body 10 from a certain angle range AR1. On the other hand, light L22 to L24 incident from a direction within another certain angular range AR2 mainly passes through the light transmission region 22 between two adjacent display surfaces 25 and is guided to the solar cell panel 50. Therefore, the solar cell panel 50 exhibits a power generation function with respect to light incident on the solar cell composite display body 10 from another certain angular range AR2. Thus, according to the solar cell composite display 10, the solar cell panel 50 is used when the observer observes the display surface 25 using the difference between the observation direction from the observer and the incident direction of the external light. Visibility is suppressed and it is possible to achieve harmony with the surroundings.

  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 louver sheet 20, the first surface 20a of the louver sheet 20, the second surface 20b of the louver sheet 20, the panel surface of the solar cell panel 50, and the light reception of the solar cell panel 50. The surfaces 50a 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.

  Hereinafter, the configuration and operational effects of the solar cell composite display 10 according to the present embodiment will be described in detail. As well shown in FIGS. 1 and 2, the solar cell composite display body 10 includes a support sheet 40, a louver sheet 20, and a solar cell panel 50 in this order. The support sheet 40 forms the surface 10 a of the solar cell composite display body 10, and the solar cell panel 50 forms the back surface 10 b of the solar cell composite display body 10. The surface 10 a forms an incident surface for external light such as sunlight that enters the solar cell composite display body 10. Further, the surface 10 a forms an emission surface from which light from the display surface 25 is emitted from the solar cell composite display body 10.

  First, the louver sheet 20 disposed between the support sheet 40 and the solar cell panel 50 will be described. The sheet-like louver sheet 20 has a first surface 20a and a second surface 20b as a pair of main surfaces facing each other. The 1st surface 20a comprises the surface bonded together to the support sheet 40, and is a flat surface. The second surface 20b is a surface facing the solar cell panel 50, and is a flat surface parallel to the first surface 20a.

  As shown in FIG. 2, the louver sheet 20 includes a main body portion 21 in which a plurality of cuts 23 are formed, and a plurality of filling portions 24 arranged in the cuts 23 corresponding to each. In this case, the first surface 20 a of the louver sheet 20 is formed on the surface of the main body portion 21 that faces the support sheet 40. On the other hand, the second surface 20 b of the louver sheet 20 includes a surface on the solar cell panel 50 side in the filling portion 24 and a surface on the solar cell panel 50 side in the main body portion 21 between the adjacent filling portions 24. , Is formed.

  Each cut 23 is formed by cutting the main body portion 21 from the solar cell panel 50 side toward the support sheet 40 side. Accordingly, each of the cuts 23 is recessed with respect to the normal direction nd of the louver sheet 20 than other portions of the main body portion 21. The plurality of cuts 23 are arranged in the first axial direction d1 along the sheet surface of the louver sheet 20. Each incision 23 is linear in a direction intersecting the first axial direction d1 that is the arrangement direction, more strictly, in a second axial direction d2 orthogonal to the first axial direction d1 and parallel to the sheet surface of the louver sheet 20. It extends.

  In the present embodiment, the end of the cut 23 that is closest to the support sheet 40 is separated from the first surface 20 a of the louver sheet 20. In this case, since the thickness can be ensured between the cut 23 and the first surface 20a of the louver sheet 20, the mechanical strength against bending and impact can be ensured.

  Each notch 23 is filled with a corresponding filling portion 24. In each filling portion 24, a color pigment is dispersed, and a display surface 25 is formed by the surface of the filling portion 24. In the example shown in FIG. 2, the surface of the filling portion 24 that faces the support sheet 40 side forms the display surface 25.

  Each display surface 25 is located inside the louver sheet 20. That is, each display surface 25 is located between the first surface 20 a and the second surface 20 b of the louver sheet 20. The plurality of display surfaces 25 are arranged in the first axial direction d <b> 1 similarly to the cuts 23. Each display surface 25 extends linearly in a direction intersecting with the first axis direction d1, more precisely, in a second axis direction d2 orthogonal to the first axis direction d1, similarly to the notch 23.

  Each display surface 25 is inclined with respect to both the sheet surface of the louver sheet 20 and the normal direction nd. That is, each display surface 25 is not parallel to both the sheet surface of the louver sheet 20 and the normal direction nd. According to such a display surface 25, as will be described later, power is generated in the first angle range AR1, which is an angle range in which the display function from the display surface 25 is expressed, and in the solar cell panel 50. It is possible to adjust the second angle range AR2 that is an angle range that is continuously and stably performed with a high degree of freedom.

  As shown in FIG. 2, each display surface 25 has a first end portion 25 a located on one side in the first axial direction d <b> 1 (in the illustrated example, the upper side in FIG. 2 and the upper side in the vertical direction). The solar cell panel 50 in the normal direction nd of the louver sheet 20 relative to the other end portion 25b located on the other side in the axial direction d1 (the lower side in FIG. 2 in the illustrated example and the lower side in the vertical direction). The louver sheet 20 is inclined with respect to the seat surface so as to be separated from the seat. Therefore, the one end portion 25 a of the display surface 25 is farther from the solar cell panel 50 in the normal direction nd of the louver sheet 20 than the other end portion 25 b of the display surface 25. As understood from FIG. 2, light from the angle range D <b> 21 inclined to the other side (lower side) with respect to the normal direction nd is likely to enter the display surface 25. Therefore, the display function from the display surface 25 is effectively exhibited toward an angle range inclined to the other side (downward) with respect to the normal direction nd.

  From the viewpoint of enhancing such a tendency, in the main cut surface of the solar cell complex, the display surface 25 is stepwise from one side (upper side) to the other side (lower side) in the first axial direction d1. It is preferable to continuously approach the solar cell panel 50 along the normal direction nd of the louver sheet 20. In the illustrated example, the display surface 25 is formed as a flat surface. And in the main cut surface of the solar cell composite shown in FIG. 2, the display surface 25 has a constant constant inclination from one side to the other side in the first axial direction d1, and is a louver sheet. The solar cell panel 50 is approached along the 20 normal direction nd. According to such a display surface 25, the display function from the display surface 25 is effectively exhibited toward an angle range inclined to the other side with respect to the normal direction nd.

  As described above, the display surface 25 is a surface for displaying a display target. The light emitted from the solar cell composite display 10 toward the first angle range AR1 from the display surface 25 makes the display target given to the display surface 25 visible. That is, the display surface 25 is visually recognized from the first angle range AR1, and as a result, the display target formed on the display surface 25 can be observed. In addition, when displaying the display object which moves with the display surface 25, it is easy to use the electricity generated from the solar cell panel 50 for driving.

  As described above, the solar cell complex 10 can adjust the angle range in which the display target is continuously displayed with a high degree of freedom. Therefore, the solar cell composite 10 can be used for various purposes. For example, large panels of several meters to several tens of meters used for outdoor signboards, road information bulletin boards, outer wall surfaces of buildings, posters, etc. Examples include medium-sized panel applications of several tens of centimeters to several meters used for signs, building inner walls, etc., and small panel applications of several centimeters to several tens of centimeters used for table lamps, portable terminals, etc. it can.

  Further, as shown in FIG. 2, the light transmission region 22 is located between the two adjacent display surfaces 25. In the present embodiment, the light transmission region 22 is configured by a region of the main body portion 21 located between two adjacent display surfaces 25. Similar to the display surface 25, the plurality of light transmission regions 22 are arranged in the first axial direction d <b> 1 that is the arrangement direction of the unit lenses 30. Therefore, the plurality of display surfaces 25 and the plurality of light transmission regions 22 are alternately arranged along the first axial direction d1. Further, the light transmission region 22 corresponds to the display surface 25 in a direction that intersects the first axis direction d1 that is the arrangement direction, more strictly, in a second axis direction d2 that is orthogonal to the first axis direction d1. It extends in a shape.

  In particular, as shown in FIG. 2, when viewed from the normal direction nd of the louver sheet 20, the plurality of display surfaces 25 are displaced from each other. That is, each display surface 25 does not overlap with the other display surfaces 25 located adjacent to each other in the normal direction nd of the louver sheet 20. In this case, at least a part of the light L22 traveling in the louver sheet 20 along the normal direction nd of the louver sheet 20 is transmitted through the light transmission region 22 between the two adjacent display surfaces 25, so that the solar cell panel. 50.

  The solar cell panel 50 is disposed so as to face the second surface 20b of the louver sheet 20. This solar cell panel 50 is a power generator that converts light received by the light receiving surface 50a into electric energy. Lights L22 to L24 taken into the light transmission surface 22 from the second angle range AR2 are guided to the light receiving surface 50a of the solar cell panel 50, and these lights L22 to L24 are used for power generation.

  As shown in FIG. 2, the solar cell panel 50 extends in a planar shape so as to face each of the plurality of display surfaces 25 and the plurality of light transmission regions 22 arranged in the first axial direction d1. In the illustrated example, the solar cell panel 50 extends in parallel with the sheet surface of the louver sheet 20. Therefore, in the illustrated example, the light receiving surface 50a extends in parallel with the first axis direction d1 that is the arrangement direction of the display surfaces 25 and also extends in parallel with the second axis direction d2 that is the longitudinal direction of the display surface 25. It has spread.

  Various types of solar cell panels 50 can be used. For example, a silicon-based solar cell panel, a thin-film solar cell panel, a chalcopyrite solar cell, or the like including a flat silicon substrate made of single crystal silicon or polycrystalline silicon can be used as the solar cell panel 50.

  Further, as described above, the solar cell composite display 10 has the support sheet 40 bonded to the first surface 20a of the louver sheet 20. The support sheet 40 is for reinforcing the louver sheet 20 and supporting the louver sheet 20.

  The support sheet 40 has a facing surface 40a and a support surface 40b as a pair of main surfaces facing each other. The facing surface 40 a forms the surface 10 a of the solar cell composite display body 10, and the support surface 40 b forms a surface to be bonded to the first surface 20 a of the louver sheet 20. The facing surface 40a and the support surface 40b shown in the figure are parallel to each other and form flat surfaces.

  In the present embodiment, the thickness of the support sheet 40, that is, the distance between the facing surface 40a and the support surface 40b is greater than the thickness of the louver sheet 20, that is, the distance between the first surface 20a and the second surface 20b. It is narrower.

  Next, an example of the manufacturing method of the solar cell composite display 10 described above will be described mainly with reference to FIGS.

  First, as shown in FIG. 5, a molten transparent resin is poured between the support sheet 40 and a mold 200 for shaping the louver sheet 20. The mold 200 is provided with a convex portion 201 for forming the cut 23 of the louver sheet 20. For this reason, as shown in FIG. 6, the transparent resin poured into the mold 200 is molded as a main body portion 21 in which a plurality of cuts 23 are formed. For this molding, for example, hot melt extrusion or injection molding can be employed.

  Next, as shown in FIG. 7, each notch 23 of the main body portion 21 is filled with a filling portion 24 containing a pigment. The filling portion 24 is not particularly limited as long as it is a material that exhibits a desired color and has a good filling property into the long slits 23 and can be cured by some method. The main body portion 21 and the filling portion 24 constitute a louver sheet 20.

  Thereafter, as shown in FIG. 8, the solar cell panel 50 is disposed so as to face the second surface 20 b of the louver sheet 20. In the example shown in FIG. 8, the light receiving surface 50 a of the solar cell panel 50 is joined to the second surface 20 b of the louver sheet 20. Thereby, the solar cell composite display 10 is obtained.

  Next, the operation of the solar cell composite display 10 will be described mainly with reference to FIGS. 3 and 4. For example, the solar cell composite display 10 is arranged such that the first axis direction d1 that is the arrangement direction of the display surfaces 25 is along the vertical direction. Specifically, the solar cell composite display 10 is configured such that one side in the first axial direction d1 corresponds to the upper side in the vertical direction, and the other side in the first axial direction d1 corresponds to the lower side in the vertical direction. Be placed.

  As well shown in FIG. 3, the display surface 25 inclined with respect to the sheet surface of the louver sheet 20 is easily visible from the front direction of the display surface 25. In the example shown in FIG. 3, the display surface 25 is inclined to one side in the first axial direction d1 with respect to the normal direction nd of the louver sheet 20, and therefore the first axial direction d1 with respect to the normal direction nd. When the solar cell composite display 10 is observed from the directions D41 and D42 inclined to the other side, the display surface 25 can be easily seen. In this way, by tilting the display surface 25 with respect to the normal direction nd of the louver sheet 20, the first angle range AR1 serving as a viewing angle at which the display surface 25 is observed can be adjusted with a high degree of freedom. it can. Therefore, the observer can observe the display object with excellent visibility and can display the display object with excellent design.

  On the other hand, the light L51 and L52 traveling in the louver sheet 20 from the direction in which the angle formed with respect to the display surface 25 is smaller are less likely to be received by the display surface 25. Accordingly, the lights L51 and L52 that effectively pass through the light transmission region 22 without being interrupted by the inclined display surface 25, as shown in FIG. 4, can be easily viewed in the directions D41 and D42 (FIG. 3). The light beams L51 and L52 are inclined to the opposite side. That is, light that enters the louver sheet 20 while traveling to the other side in the first axial direction d1, that is, light L51 and L52 that are incident on the louver sheet 20 while traveling downward in the vertical direction, passes through the light transmission region 22. Passing through the solar cell panel 50 is facilitated. In this way, by tilting the display surface 25 with respect to the normal direction nd of the louver sheet 20, the first angle range AR1 serving as a viewing angle at which the display surface 25 is observed can be adjusted with a high degree of freedom. it can. Therefore, the observer can observe the display object with excellent visibility and can display the display object with excellent design.

  As described above, according to the present embodiment, the louver sheet includes the first surface 20a and the second surface 20b facing each other, and includes the plurality of display surfaces 25 arranged in the first axial direction d1 therein. 20, a support sheet 40 that is bonded to the first surface 20 a of the louver sheet 20 and supports the louver sheet 20, and a solar cell panel 50 that is disposed to face the second surface 20 b of the louver sheet 20. The display surface 25 is inclined with respect to the sheet surface of the louver sheet 20, and light L22 to L24, L51, and L52 incident on the support sheet 40 from a certain direction is a region between two adjacent display surfaces 25. 21, the light entering the support sheet 40 from another direction D21, D41, D42 different from the certain direction reaches the display surface 25. Mari, when observing the supporting sheet 40 from different another direction D21, D41, D42 and the certain direction, it is possible to view the display surface 25. According to such a solar cell composite display 10, since the display surface 25 is inclined with respect to the panel surface of the solar cell panel 50, the inclined display surface 25 is observed from each front direction. It becomes easy to be visually recognized. On the other hand, the light transmission region 22 defined between two adjacent display surfaces 25 is light incident on the solar cell composite display 10 from a direction different from the directions D21, D41, and D42 in which the display surface 25 is easily visible. L22 to L24, L51, and L52 are effectively taken in and easily led to the solar cell panel 50. In this way, by inclining the display surface 25 with respect to the sheet surface of the louver sheet 20, power generation continues in the first angle range AR <b> 1 and the solar cell panel 50 that are the viewing angles at which the display surface 25 can be observed. It becomes possible to adjust the second angle range AR2, which is an angle range that is stably performed, with a high degree of freedom. In addition, since the solar cell panel 50 is disposed to face the second surface 20b of the louver sheet 20, the light receiving surface 50a of the solar cell panel 50 is not exposed to the outside. For this reason, the solar cell panel 50 can be made inconspicuous. For these reasons, according to the present embodiment, it is possible to achieve harmony with the surrounding environment and effectively achieve both the display by the display surface 25 and the power generation by the solar cell panel 50.

  In the present embodiment, each display surface 25 has a louver sheet in which one end 25a located on one side in the first axial direction d1 is more than the other end 25b located on the other side in the first axial direction d1. It is inclined with respect to the sheet surface of the louver sheet 20 so as to be separated from the solar cell panel 50 in the normal direction nd of 20. Since the display surface 25 is easily visible when viewed from the front direction D21, D41, D42 of the display surface 25, in this case, the other side in the first axial direction d1 with respect to the normal direction nd of the louver sheet 20 When the solar cell composite display 10 is observed from the directions D21, D41, D42 inclined in the direction, it becomes easy to visually recognize. On the other hand, the light L22 to L24, L51, and L52 from the direction inclined to one side in the first axial direction d1 with respect to the normal direction nd of the louver sheet 20 is from the direction in which the angle formed with the display surface 25 is small. Since it travels inside, it is difficult to be blocked by the display surface 25. Light from a direction inclined to one side in the first axial direction d1 with respect to the normal direction nd of the louver sheet 20, which is not easily obstructed by the display surface 25, in other words, the sun while proceeding to the other side in the first axial direction d1 Lights L22 to L24, L51, and L52 incident on the battery complex 10 are easily received by the solar cell panel 50 through the light transmission region 22.

  In particular, in the solar cell complex 10 according to the present embodiment, the first axial direction d1 that is the arrangement direction of the display surfaces 25 is along the vertical direction, and one side in the first axial direction d1 corresponds to the upper side, and the first axial direction The other side in d1 corresponds to the lower side. Thereby, the second angle range AR2 that is the angle range of the incident direction to the solar cell complex 10 to be guided from the light transmission region 22 to the solar cell panel 50 is set in a direction inclined upward in the vertical direction, The first angle range AR1 in which the display function from the display surface 25 is expressed can be set in a direction inclined downward in the vertical direction. Such a method of installation is suitable for the case where the solar cell composite 10 is installed at a position higher than the line of sight in a use as a display plate assumed as a typical use. In this case, the observer observes the solar cell complex 10 while looking up at the upper side in the vertical direction. From this, the observation direction of the observer corresponds to the direction in the first angle range AR1, and the display object given to the display surface 25 from the first angle range AR1 can be observed. On the other hand, although the incident direction of sunlight changes depending on the time zone and season, it enters the solar cell composite display 10 while proceeding in a direction inclined downward in the vertical direction. For this reason, even if an incident direction changes according to a time zone or a season, sunlight enters into the solar cell composite display body 10 from the second angle range AR2 and passes through the light transmission region 22 of the louver sheet 20. It can go to the battery panel 50. Therefore, according to such a form, it is possible to effectively balance solar power generation and display of the display object 26.

  Further, according to the present embodiment, when viewed from the normal direction nd of the louver sheet 20, the plurality of display surfaces 25 are arranged so as to be shifted from each other. In this case, at least a part of the light L22 traveling in the louver sheet 20 along the normal direction nd of the louver sheet 20 is transmitted through the light transmission region 22 between the two adjacent display surfaces 25, so that the solar cell panel. 50. In particular, when the first axial direction d1 that is the arrangement direction of the display surface 25 is along the vertical direction, the solar cell panel 50 can receive light incident on the solar cell composite display body 10 from the substantially horizontal direction. Become.

  Further, according to the present embodiment, the first surface 20a of the louver sheet 20 is flat. In this case, an interface having a refractive index difference formed between the first surface 20a of the louver sheet 20 and the support surface 40b of the support sheet 40 is also flattened, so that the solar cell composite display 10 is formed at the interface. It is possible to suppress the incident light from being bent in an unintended direction.

  Further, according to the present embodiment, the louver sheet 20 has a main body portion provided with a plurality of cuts 23 cut from the solar cell panel 50 side toward the support sheet 40 side in the first axial direction d1. 21 and a plurality of filling portions each disposed in a corresponding notch of the main body portion 21 and having a colored pigment dispersed therein, and a corresponding display surface 25 is defined by the surface of each filling portion 24. In this case, the louver sheet 20 can be efficiently produced using an industrial production process.

  Further, according to the present embodiment, the support sheet 40 includes the support surface 40b that is bonded to the first surface 20a of the louver sheet 20, and the facing surface 40a that faces the support surface 40b. The facing surfaces 40a are parallel to each other and are flat. In this case, since the support surface 40b and the facing surface 40a are flat, the light incident on the facing surface 40a of the support sheet 40 is bent in an unintended direction by the facing surface 40a, and the facing surface 40a. It can suppress that the light which approachs into the louver sheet | seat 20 after passing through the support surface 40b is bent in the direction which is not intended by the said support surface 40b.

  Moreover, according to this Embodiment, the large sized solar cell panel 50 is arrange | positioned facing the 2nd surface 20b of the louver sheet | seat 20. As shown in FIG. In this regard, it is conceivable that small solar cell panels 50 are respectively arranged in accordance with the respective light transmission regions 22 and a large number of solar cell panels 50 are used as a whole. When each solar cell panel 50 is arranged on the corresponding one display surface 25, a large number of solar cell panels 50 are required, resulting in an increase in cost. In addition, the size of one solar cell panel 50 cannot be increased so much, and the power generation efficiency cannot be increased so much due to the characteristics of the solar cell panel 50. On the other hand, according to the present embodiment, the large-sized solar cell panel 50 is arranged to face each display surface 25. In this case, since the solar cell panel 50 can be arrange | positioned corresponding to the some display surface 25, the increase in cost can be suppressed. In addition, the power generation efficiency can be increased by using the large 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 also possible to make the desired altitude fall within the second angle range AR2 by arranging the solar cell composite display 10 so as to be inclined. 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 it to less than about 135 °, the solar cell composite display according to the present embodiment. The features of the body 10 can be exhibited more.

≪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 louver sheet 20 includes a main body portion 21 in which a long cut 23 is formed, and a filling portion 24 in which the cut 23 is filled and pigment is dispersed. Although the example which contains is shown, the structure of the louver sheet | seat 20 is not limited to the example mentioned above. FIG. 9 shows another configuration example of the louver sheet 20. In the example shown in FIG. 9, the louver sheet 20 is
It includes a main body portion 21 in which a plurality of V-shaped cuts 23 are formed, and a plurality of ink materials 27 and a plurality of embedded portions 28 arranged in the corresponding cuts 23. In this case, the first surface 20 a of the louver sheet 20 is formed on the surface of the main body portion 21 on the support sheet 40 side. On the other hand, the second surface 20b of the louver sheet 20 is formed on the solar cell panel 50 side of the main body portion 21 between the surface of the embedded portion 28 and the adjacent embedded portion 28 side. And a surface.

  Each cut 23 is formed by cutting the main body portion 21 from the solar cell panel 50 side toward the support sheet 40 side. Accordingly, each of the cuts 23 is recessed with respect to the normal direction nd of the louver sheet 20 than other portions of the main body portion 21. The plurality of cuts 23 are arranged in the first axial direction d1 along the sheet surface of the louver sheet 20. Each incision 23 extends linearly in a direction intersecting the first axial direction d1 that is the arrangement direction, more strictly in a second axial direction d2 orthogonal to the first axial direction d1.

  As shown in FIG. 9, each cut 23 includes a first cut surface 23 a and a second cut surface 23 b extending from the solar cell panel 50 side toward the support sheet 40 side. The interval between the first cut surface 23 a and the second cut surface 23 b becomes narrower as the support sheet 40 is approached along the normal direction nd of the louver sheet 20. And the edge part by the side of the support sheet 40 of the 1st cut surface 23a which approached most and the edge part by the side of the support sheet 40 of the 2nd cut surface 23b are mutually connected.

  An ink material 27 is arranged along the second cut surface 23b of the cut 23, and an embedded portion 28 is arranged so as to fill the cut 23 in which the ink material 27 is arranged. That is, the ink material 27 is sandwiched between the main body portion 21 and the embedded portion 28 in the cut 23. A surface of the ink material 27 facing the support sheet 40 side forms a display surface 25.

  Since the cut 23 is formed in a tapered shape, the ink material 27 can be disposed in the cut 23 by inkjet printing. In this case, as shown in FIG. 10, various display objects 26 can be displayed by combining the display surfaces 25 defined by the ink materials 27.

  FIG. 10 shows an example of the display object 26 given to the display surface 25. The plurality of display surfaces 25 are arranged in the first axial direction d1 corresponding to the notches 23, and each display surface 25 extends linearly in the second axial direction d2 orthogonal to the first axial direction d1. Yes. A display target element 26a corresponding to the position of the display surface 25 in the first axial direction d1 is given to the display surface 25 located at each position in the first axial direction d1. As a result, the two-dimensional display object 26 can be displayed as a combination of the display object elements 26a formed on each display surface 25 elongated in the second axis direction d2. In the example shown in FIG. 10, the capital letter “N” of the alphabet is displayed as the display object 26. Thus, since the size of each display surface 25 can be reduced by displaying the display target 26 as a combination of a plurality of display target elements 26a, the second angle range AR2 is expanded or the size of the solar cell complex 10 is increased. Even so, a better display object 26 can be observed.

  The embedded portion 28 is not particularly limited as long as it is a material that can fill the cut 23 of the main body portion 21 in which the ink material 27 is disposed. As an example, the embedded portion 28 may be made of the same resin material as the resin material forming the main body portion 21, or may be made of a resin material having a refractive index lower than that of the main body portion 21. In particular, when a resin material having a refractive index lower than that of the main body portion 21 is employed as the embedded portion 28, for example, an ultraviolet curable type material can be used as the material for forming the embedded portion 28 in consideration of the filling property of the main body portion 21 into the notch 23. The resin can be used. In the example shown in FIG. 9, the refractive index of the embedded portion 28 is lower than the refractive index of the main body portion 21.

  According to the solar cell composite display 10 shown in FIG. 9, the solar cell composite display 10 was observed from a direction D91 inclined to the other side in the first axial direction d1 with respect to the normal direction nd of the louver sheet 20. Sometimes the display surface 25 is easily visible. On the other hand, the light L92 and L93 incident on the solar cell composite display 10 from the direction in which the angle formed with respect to the display surface 25 is smaller, that is, the direction inclined to one side in the first axis direction d1, is transmitted through the light. It becomes easy to be guided to the solar cell panel 50 through the region 22.

  However, even if the light L93 incident on the solar cell composite display 10 from a direction inclined to one side in the first axial direction d1, the angle formed with respect to the normal direction nd of the louver sheet 20 is extremely large. There is a possibility that the light enters the display surface 25 from the back surface 10b side of the solar cell composite display 10 across the light transmission region 22 and is not used effectively. In this regard, according to the embodiment shown in FIG. 9, the refractive index of the embedded portion 28 is lower than the refractive index of the main body portion 21. In this case, the light L93 traveling toward the display surface 25 from the back surface 10b side is the interface between the low refractive index resin portion 28 and the main body portion 21, and the traveling direction of the light L93 is relative to the normal direction nd of the louver sheet 20. It is bent so that the angle formed by the robot becomes smaller. Thereby, even if it is the light L93 which injected into the solar cell composite display body 10 from the direction largely inclined to one side in the first axial direction d1 with respect to the normal direction nd of the louver sheet 20, on the display surface 25 It can also be configured such that it can be guided to the solar cell panel 50 without being blocked.

  As described above, the louver sheet shown in FIG. 9 includes a main body portion 21 provided with a plurality of cuts 23 cut from the solar cell panel 50 side toward the support sheet 40 side in the first axial direction d1. , Each of which includes a plurality of ink materials 27 and a plurality of embedded portions 28 disposed in the corresponding cuts 23 of the main body portion 21, and a corresponding display surface 25 is defined by the surface of each ink material 27. . In this case, the louver sheet 20 can be efficiently produced using an industrial production process.

DESCRIPTION OF SYMBOLS 10 Solar cell composite display 10a Front surface 10b Back surface 20 Louver sheet | seat 20a 1st surface 20b 2nd surface 21 Main body part 22 Light transmission area 23 Cut 24 Filler 25 Display surface 25a One end part 25b Other end part 26 Display object 26a Display object Element 27 Ink material 28 Embedded portion 40 Support sheet 40a Opposing surface 40b Support surface 50 Solar cell panel 50a Light receiving surface

Claims (6)

A louver sheet including a plurality of display surfaces arranged in a uniaxial direction inside the first surface and the second surface facing each other;
A support sheet that is bonded to the first surface of the louver sheet and supports the louver sheet;
A solar cell panel disposed opposite to the second surface of the louver sheet;
With
The display surface is inclined with respect to the sheet surface of the louver sheet,
Light incident on the support sheet from a certain direction travels toward the solar cell panel via a region between two adjacent display surfaces, and the support sheet from another direction different from the certain direction. A solar cell composite-type display body in which light incident on the light reaches the display surface.   The solar cell composite display according to claim 1, wherein the first surface of the louver sheet is flat. The louver sheet includes a main body portion provided by arranging a plurality of cuts cut from the solar cell panel side toward the support sheet side in the first axial direction, and each of the louver sheets includes a corresponding cut in the main body portion. And a plurality of filled portions in which color pigments are dispersed, and
The solar cell composite display according to claim 1 or 2, wherein a corresponding display surface is defined by a surface of each filling portion. The louver sheet includes a main body portion provided by arranging a plurality of cuts cut from the solar cell panel side toward the support sheet side in the first axial direction, and each of the louver sheets includes a corresponding cut in the main body portion. A plurality of ink materials and a plurality of embedded portions arranged in
The solar cell composite display according to claim 1 or 2, wherein a corresponding display surface is defined by the surface of each ink material. The support sheet includes a support surface bonded to the first surface of the louver sheet, and a facing surface facing the support surface,
The solar cell composite display according to any one of claims 1 to 4, wherein the support surface and the facing surface are parallel to each other and flat.   The solar cell composite display according to any one of claims 1 to 5, wherein when viewed from the normal direction of the louver sheet, the plurality of display surfaces are shifted from each other.

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