JP2017181966A - Solar cell composite type display body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an observation of a display part from a lateral side, in a solar cell composite type display body.SOLUTION: A solar cell composite type display body 10 includes: a sheet-like main body part 40 having a pair of opposing principal planes 40a, 40b; and a solar battery panel 50 arranged opposing one of the pair of principal planes 40a, 40b of the main body part 40. A plurality of display surfaces 12 are arranged on the one principal plane 40a of the main body part 40, or inside the main body part 40 oblique to a direction parallel to both a sheet face of the main body part 40 and a horizontal direction.SELECTED DRAWING: Figure 1

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, Patent Document 1 proposes an apparatus in which a solar panel, a film in which an image portion and a transparent portion are alternately formed, and a linear array lens are stacked. Yes. In this apparatus, due to refraction by the linear array lens, light from above passes through the transparent part of the film and enters the solar panel. On the other hand, light from below travels toward the display portion of the film by refraction at the linear array lens. Therefore, the display on the display unit is observed from below.

Special table 2009-524794

  In the solar cell composite display disclosed in Patent Document 1, the display on the display unit can be observed only from below. However, depending on the installation location, installation angle, display content, etc. of the solar cell composite display, it may be preferable that the display unit can be observed from other directions, particularly from the horizontal direction.

  The present invention has been made in consideration of the above points, and an object of the present invention is to enable a display unit to be observed from the lateral direction in a solar cell composite display.

The solar cell composite display according to the present invention is:
A sheet-like main body having a pair of opposing main surfaces;
A solar cell panel disposed opposite to one of the pair of main surfaces of the main body,
A plurality of display surfaces inclined with respect to a direction parallel to both the sheet surface and the horizontal direction of the main body are arranged on one main surface of the main body or inside the main body. Yes.

In the solar cell composite display according to the present invention,
A plurality of unit elements arranged on one main surface of the main body part, each forming a convex part or a concave part,
Each display surface may be arranged on the surface of each unit element.

In the solar cell composite display according to the present invention,
The plurality of unit elements may be arranged along at least one direction on the one main surface.

In the solar cell composite display according to the present invention,
The plurality of unit elements are arranged so as to be separated from or closely adhered to a first direction parallel to the one main surface and a second direction parallel to the one main surface and intersecting the first direction. Also good.

In the solar cell composite display according to the present invention,
The plurality of display surfaces may be arranged inside the main body along at least one direction parallel to the sheet surface of the main body.

In the solar cell composite display according to the present invention,
The plurality of display surfaces are spaced apart or closely arranged in a first direction parallel to the sheet surface of the main body and a second direction parallel to the sheet surface of the main body and intersecting the first direction. It may be.

  ADVANTAGE OF THE INVENTION According to this invention, a display part can be observed from a horizontal direction in a solar cell composite display body.

FIG. 1 is a perspective view showing a solar cell composite display body for explaining a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a diagram illustrating an example of a display target displayed on the solar cell composite display. FIG. 5 is a diagram corresponding to FIG. 2 for explaining a modification of the light control sheet. FIG. 6 is a diagram corresponding to FIG. 3, for explaining another modification of the light control sheet. FIG. 7 is a diagram corresponding to FIG. 3 and is a diagram for explaining still another modified example of the light control sheet. FIG. 8 is a partial perspective view showing the optical element portion, and is a view for explaining still another modified example of the light control sheet. FIG. 9 is a plan view showing the light control sheet, and is a view for explaining still another modification of the light control sheet. FIG. 10 is a partial perspective view showing the optical element portion, and is a view for explaining still another modified example of the light control sheet. FIG. 11 is a partial perspective view showing the optical element portion, and is a view for explaining still another modification of the light control sheet. FIG. 12 is a plan view showing the arrangement of unit elements, and is a diagram for explaining still another modification of the light control sheet. FIG. 13 is a partial perspective view showing the optical element portion, and is a view for explaining still another modified example of the light control sheet. FIG. 14 is a partial perspective view showing the optical element portion, and is a view for explaining still another modified example of the light control sheet. FIG. 15 is a partial perspective view showing the optical element portion, and is a view for explaining still another modified example of the light control sheet. FIG. 16 is a partial perspective view showing the optical element portion, and is a view for explaining still another modification of the light control sheet. FIG. 17 is a partial perspective view showing the optical element portion, and is a view for explaining still another modified example of the light control sheet. FIG. 18 is a partial perspective view showing the optical element portion, and is a view for explaining still another modification of the light control sheet. FIG. 19 is a plan view showing the light control sheet, and is a view for explaining still another modification of the light control sheet. FIG. 20 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 21 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modified example of the light control sheet. FIG. 22 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 23 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 24 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 25 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 26 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 27 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 28 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 29 is a perspective view showing a solar cell composite display body for explaining a second embodiment of the present invention. 30 is a cross-sectional view taken along line XXX-XXX in FIG. FIG. 31 is a perspective view showing the light control sheet together with the solar battery panel, and is a view for explaining a modification of the light control sheet. FIG. 32 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining another modified example of the light control sheet. FIG. 33 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 34 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 35 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 36 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet. FIG. 37 is a perspective view showing the light control sheet together with the solar cell panel, and is a view for explaining still another modification of the light control sheet.

  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.

(First embodiment)
1 to 28 are diagrams for explaining the first embodiment and its modifications. Among these, FIG. 1 is a perspective view showing a configuration of the solar cell composite display body 10, and FIGS. 2 and 3 are vertical and horizontal cross-sectional views of the solar cell composite display body 10, respectively. FIG. 4 is a diagram showing a display target observed when the solar cell composite display 10 is observed from the lateral direction. On the other hand, FIGS. 5 to 28 are diagrams for explaining a modification.

  As shown in FIGS. 1 to 3, the solar cell composite display body 10 of this embodiment includes a light control sheet 20 having a sheet-like main body portion 40 having a pair of opposed main surfaces 40 a and 40 b. And a solar cell panel 50 disposed to face the main surface 40b of the main body 40 of the light control sheet 20. In the illustrated example, the light control sheet 20 forms the front 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 10a forms an incident surface on which external light such as sunlight incident on the solar cell composite display body 10 is incident. The solar cell composite display 10 described here exhibits both a predetermined display function and a power generation function using external light. The solar cell composite display 10 shown in FIG. 1 has a plurality of unit elements 30 that are two-dimensionally arranged, that is, arranged in a planar manner.

  A display element 11 for visualizing the display target 13 (see FIG. 4) is provided on the surface 10a of the solar cell composite display body 10 of the present embodiment. In the example shown in FIG. 4, the element surface 31 of each unit element 30 includes four surfaces (a first surface 32 a, a second surface 32 b, a third surface 32 c, and a fourth surface 32 d), Among these, the display element 11 is arranged on the third surface 32c.

  The configuration and operational effects of the solar cell composite display 10 according to the present embodiment will be described. As shown in FIG. 3, when the solar cell composite display 10 is observed from the directions D31 and D32 within the angle range AR3, the display element 11 disposed so as to mainly cover the third surface 32c of the element surface 31 is observed. The Therefore, the display element 11 mainly exhibits a display function for an observer who observes the solar cell composite display body 10 from the angle range AR3. On the other hand, light L31 and L32 incident from a direction within another angular range AR4 is mainly transmitted through the fourth surface 32d of the unit element 30 and guided to the solar cell panel 50. Therefore, the solar cell panel 50 mainly exhibits a power generation function with respect to light incident on the solar cell composite display body 10 from the angle range AR4.

  As described above, according to the solar cell composite display body 10, the solar cell is used when the observer observes the display element 11 using the difference between the observation direction from the observer and the incident direction of the external light. The panel 50 is suppressed from being visually recognized, and it is possible to generate power with the solar panel 50 while maintaining harmony with the surroundings. In particular, in the example shown in FIGS. 1 to 4, the display element 11 covers one lateral side surface 35 (third surface 32 c) of the four surfaces 32 a to 32 d constituting the element surface 31 of the unit element 30. Thus, the display object 13 can be viewed from the horizontal direction.

  Hereinafter, the configuration and operational effects of each member constituting the solar cell composite display body 10 of the present embodiment will be described in detail.

  The light control sheet 20 includes a sheet-like main body portion 40 and an optical element portion 25 stacked on the main body portion 40. Among these, the main-body part 40 has the 1st surface 40a and the 2nd surface 40b as a pair of main surface which mutually opposes. The first surface 40 a forms a surface adjacent to the optical element portion 25. The second surface 40 b faces the light receiving surface 50 a of the solar cell panel 50.

  The optical element portion 25 has a first surface 25a and a second surface 25b as a pair of main surfaces facing each other. The first surface 25 a of the optical element portion 25 forms the surface 10 a of the solar cell composite display body 10. The second surface 25 b of the optical element portion 25 is disposed to face the first surface 40 a of the main body portion 40. The main body portion 40 and the optical element portion 25 are made of a material having excellent light transmittance so that light incident on the solar cell composite display 10 can be efficiently transmitted, and resin or glass can be used. In this embodiment, an acrylic resin is used as a main component. The first surface 40a of the main body portion 40 and the second surface 25b of the optical element portion 25 may be integrally formed as shown in FIGS. 2 and 3, but a partial gap or other It may be joined via a layer.

  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. As a specific example, the “light control sheet” includes members called “light control film”, “light control plate”, and the like.

  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 panel surface of the solar cell composite display 10, the sheet surface of the light control sheet 20 described later, the sheet surface of the main body 40, and the panel surface of the solar cell panel 50 are parallel to each other. It has become. 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 optical element portion 25 disposed on the first surface 40a of the main body portion 40 includes a large number of unit elements 30 that are two-dimensionally arranged. The unit element 30 here is a part that forms a convex part or a concave part. In the illustrated example, the unit element 30 is a single element having a certain shape that appears repeatedly in the optical element section 25 as its outline. The unit element 30 forms a convex portion having a cone shape. However, the unit element 30 is not limited to the illustrated example of the prism-shaped unit prism, and may be a unit lens having a lens surface as another example. Further, the unit element 30 forms an element surface 31 on the surface facing the opposite side to the main body portion 40 (the first surface 25a of the optical element portion 25), that is, on the surface opposite to the solar cell panel 50. The element surface 31 is a non-planar surface defined by the surface of the unit element 30, and typically includes a plurality of planes, one or more curved surfaces, or a combination of these surfaces. In the illustrated example, the element surface 31 has a plurality of planes corresponding to the unit element 30 having a cone shape.

  More specifically, in the illustrated solar cell composite display body 10, the unit element 30 is formed of a unit prism having a pyramid shape, particularly a quadrangular pyramid shape. In addition, the quadrangular pyramid formed by the unit elements 30 is a pyramid and further a regular quadrangular pyramid. Accordingly, the unit element 30 includes four surfaces 32a, 32b, 32c, and 32d having a triangular shape, particularly an isosceles triangular shape. The unit element 30 is provided on the main body 40 such that the rectangular bottom surface is positioned on the first surface 40 a of the main body 40. A perpendicular line to the bottom surface passing through the apex of the unit element 30 is along the normal direction of the main body 40. However, the present invention is not limited to this example, and the perpendicular to the bottom surface passing through the apex of the unit element 30 may be inclined with respect to the normal direction nd of the main body 40.

  In the present embodiment, the unit element 30 has a lateral side surface 35 that is inclined with respect to a direction parallel to both the seat surface of the main body 40 and the horizontal direction. In the present specification, the surface “inclined with respect to the direction parallel to both the sheet surface and the horizontal direction of the main body” refers to the surface of the main body 40 when the solar cell composite display 10 is installed. It means a surface other than a surface parallel to a direction parallel to both the sheet surface and the horizontal direction, and a surface orthogonal to a direction parallel to both the sheet surface and the horizontal direction of the main body 40. Yes. In the example shown in FIGS. 1 to 4, the third surface 32 c and the fourth surface 32 d of the element surface 31 of the unit element 30 form a lateral side surface 35. The lateral side surface 35 can also be said to be a surface in which the normal direction to the lateral side surface 35 is inclined in the horizontal direction with respect to the seat surface of the main body 40. The lateral side surface 35 is inclined in the horizontal direction with respect to the sheet surface of the main body 40 and parallel to the vertical direction, and is inclined in both the horizontal and vertical directions with respect to the sheet surface of the main body 40. Surface. In addition, a portion of one surface (for example, a curved surface) that is inclined in the horizontal direction with respect to the seat surface of the main body 40 also forms the lateral surface 35.

  In the illustrated example, the plurality of unit elements 30 are arranged in both the first direction d1 and the second direction d2 on the first surface 40a of the main body 40. Both the first direction d1 and the second direction d2 are along the sheet surface of the main body 40. That is, the first direction d1 and the second direction d2 are both orthogonal to the normal direction nd of the main body 40. Further, the first direction d1 and the second direction d2 are non-parallel, and in particular, are orthogonal in the illustrated example. Therefore, the plurality of unit elements 30 are arranged in a lattice shape, particularly a square lattice shape. In the illustrated example, the solar cell composite display 10 is held so that the first direction d1 is along the vertical direction and the second direction d2 is along the horizontal direction.

  FIG. 2 shows a cross section parallel to both the first direction d1 and the normal direction of the solar cell panel 50, that is, the normal direction nd of the main body 40. On the other hand, FIG. 3 shows a cross section parallel to both the second direction d2 and the normal direction of the solar cell panel 50, that is, the normal direction nd of the main body 40. As shown in FIG. 2, in the element surface 31 of each unit element 30, the first surface 32a is located on the first side 1s in the first direction d1, and the second surface 32b is the second side in the first direction d1. 2s. In the illustrated arrangement, the first side 1s in the first direction d1 is the upper side in the vertical direction, and the second side 2s in the first direction d1 is the lower side in the vertical direction. As shown in FIG. 3, the third surface 32c is located on the third side 3s in the second direction d2, and the fourth surface 32d is located on the fourth side 4s in the second direction d2. In the illustrated arrangement, the third side 3s in the second direction d2 is the west side in the horizontal direction, and the fourth side 4s in the second direction d2 is the east side in the horizontal direction.

  As shown in FIGS. 2 to 4, the display element 11 is provided so as to cover a part of the element surface 31 of each unit element 30. Therefore, the plurality of display elements 11 are arranged corresponding to the unit elements 30 along both the first direction d1 and the second direction d2, which are the arrangement directions of the unit elements 30. In the illustrated example, the display element 11 is disposed on one lateral side surface 35 (third surface 32 c) of the element surfaces 31 of the unit element 30. Therefore, the display element 11 covers one horizontal side surface 35 (third surface 32 c) of the element surfaces 31 of the corresponding unit element 30. In particular, in the illustrated example, the display element 11 covers the entire region of one lateral side surface 35 (third surface 32c) without any gap. On the other hand, the display elements 11 are arranged so as to be shifted from the first surface 32a, the second surface 32b, and the fourth surface 32d of the corresponding unit element 30. That is, the display element 11 exposes the first surface 32a, the second surface 32b, and the fourth surface 32d without covering the first surface 32a, the second surface 32b, and the fourth surface 32d. The display element 11 of the display element 11 is held on the unit element 30 so as to face the third side 3s (the west side in the horizontal direction) in the second direction d2. That is, the display element 11 is held on the unit element 30 so as to face the third side 3s in the second direction d2.

  As described above, the solar cell composite display 10 is intended to be observed from the surface 10a side, and each display element 11 has a display surface 12 for displaying. As understood from FIG. 3, the display surface 12 is easily visible when observed from directions D31 and D32 inclined to the third side 3s (west side) with respect to the normal direction nd. Therefore, the display function from the display surface 12 is effectively exhibited when observed from the directions (lateral directions) D31 and D32 inclined to the third side 3s with respect to the normal direction nd.

  In the illustrated example, the display target 13 is displayed by a combination of a plurality of display surfaces 12. Examples of the display target 13 include patterns (images) such as figures, patterns, designs, colors, pictures, photographs, and characters, and information such as letters, marks, and numbers. The display target 13 may be stationary or moving. In particular, when displaying the moving display object 13 on the display surface 12, it is easy to use electricity generated from the solar cell panel 50 for driving.

  FIG. 4 shows an example of the display target 13 given to the display surface 12. The plurality of display surfaces 12 are arranged in the first direction d1 and also in the second direction d2, corresponding to the plurality of unit elements 30. Therefore, the display surface 12 located at each position in the first direction d1 and the second direction d2 is separately painted and functions as a pixel, so that the two-dimensional display object 13 can be displayed. .

  In particular, in the example shown in FIG. 4, the display element 11 provided on one horizontal side surface 35 (third surface 32 c) of each unit element 30 in the region corresponding to the character “N” as the display target 13. The display surface 12 has the first color. In addition, the display surface 12 of the display element 11 provided on the third surface 32c of each unit element 30 in the area corresponding to a character other than the character “N” as the display target 13 (around the display target 13) is the second. Has a color. The first color and the second color have different colors. Thereby, when the solar cell composite display 10 is observed from the directions D31 and D32 inclined to the third side 3s (lateral side, west side) with respect to the normal direction nd, the first color and the second color are observed. The character “N” as the display object 13 is observed due to the color difference between the display object 13 and the display object 13.

  In FIG. 4, the character “N” as the display target 13 is displayed in a discontinuous manner and is not displayed as a combination of continuously connected pixels. However, it should be noted that the interval between the display elements 11 is set to be sufficiently small, and can be visually recognized as a pixel in which the characters “N” as the display target 13 are continuously connected. .

  2 and 3, the first surface 32 a, the second surface 32 b, and the fourth surface 32 d of the element surfaces 31 of the unit element 30 are not covered with the display element 11. For this reason, the light L21, L22, L23, L24, L31, and L32 incident on the first surface 32a, the second surface 32b, and the fourth surface 32d pass through the surfaces 32a, 32b, and 32d while being refracted. It goes toward the solar cell panel 50. That is, the surfaces 32 a, 32 b, and 32 d of the element surface 31 that are not covered with the display element 11 function as a light transmission region that guides incident light to the light receiving surface 50 a of the solar cell panel 50.

  Lights L21, L22, L23, L24, L31, and L32 received by the light receiving surface 50a of the solar cell panel 50 are used for power generation by the solar cell elements included in the solar cell panel 50. In the illustrated example, the solar cell panel 50 is disposed so as to face the light control sheet 20 and be separated from the light control sheet 20.

  As shown in FIGS. 2 and 3, the solar cell panel 50 extends in a planar shape so as to face the plurality of unit elements 30 arranged in the first direction d1 and the second direction d2. In the illustrated example, the solar cell panel 50 extends in parallel with the sheet surface of the main body 40, in other words, the panel surface of the solar cell composite display body 10. Accordingly, in the illustrated example, the solar cell panel 50 extends in parallel with the first direction d1 and the second direction d2 that are the arrangement directions of the unit elements 30. Various known members can be used as the solar cell panel 50 and are not particularly limited.

  The solar cell composite display 10 having the above configuration can be manufactured by the following method as an example. First, the main body 40 and the unit element 30 are produced by molding a transparent resin. For the molding, hot-melt extrusion processing, injection molding, or the like can be employed. Next, the display element 11 is formed on a part of the element surface 31 of the unit element 30. As an example, the display element 11 can be disposed on the element surface 31 by inkjet printing. Thereafter, the solar cell panel 50 is installed so as to face the unit element 30. Thereby, the solar cell composite display 10 is obtained.

  The solar cell composite display 10 thus obtained can be used for various purposes. For example, the solar cell composite display 10 has a size of several meters to several tens of meters used for outdoor signboards, road information bulletin boards, outer wall surfaces of buildings, and the like. Large panel use, medium size panel use of several tens of centimeters to several meters used for posters, signs, inner walls of buildings, etc., and small panel use of several centimeters to several tens of centimeters used for table lamps, portable terminals Etc. can be illustrated.

  Next, the operation of the solar cell composite display 10 will be described mainly with reference to FIGS. 2 and 3. The solar cell composite display 10 is arranged, for example, such that the first direction d1 that is the arrangement direction of the unit elements 30 is along the vertical direction and the second direction d2 is along the horizontal direction. At this time, the first side 1s in the first direction d1 is located on the upper side in the vertical direction, the second side 2s in the first direction d1 is located on the lower side in the vertical direction, and the third side in the second direction d2 The solar cell composite display 10 is installed such that 3s is located on the west side in the horizontal direction and the fourth side 4s in the second direction d2 is located on the east side in the horizontal direction.

  First, as well shown in FIG. 2, the solar cell composite from the first side 1s in the first direction d1 with respect to the normal direction nd, that is, the direction within the first angle range AR1 inclined upward in the vertical direction. Light L21, L22 toward the mold display 10, for example, daytime sunlight, is likely to be incident on the first surface 32a of the surface 10a of the solar cell composite display 10 where the display element 11 is not provided. Further, the light L23, L24 heading toward the solar cell composite display 10 from the second side 2s in the first direction d1 with respect to the normal direction nd, that is, the direction within the second angle range AR2 inclined downward in the vertical direction. For example, the reflected light reflected by sunlight on the road surface, the roof, or the like is likely to be incident on the second surface 32b of the surface 10a of the solar cell composite display 10 where the display element 11 is not provided. The lights L21, L22, L23, and L24 that have not entered the display surface 12 can pass through the first surface 32a or the second surface 32b while being refracted, and can enter the solar cell panel 50. In other words, according to the solar cell composite display 10, sunlight can be effectively taken into the solar cell panel 50 through the first surface 32 a and the second surface 32 b of the unit element 30 to generate power with high efficiency. it can.

  Table 1 below shows the south-high altitude (°) for each season in major cities in some countries of the world. All latitudes in Table 1 are north latitudes. The longitude in Table 1 is represented by + (plus) for east longitude and-(minus) for west longitude. 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 body of the present embodiment. Ten features can be exhibited more.

  By the way, the sun does not only change the south-middle altitude depending on the season. The position of the sun changes greatly during the day. The sun moves from a low altitude position in the east to a high altitude position in the south, and then moves to a low altitude position in the west. Therefore, around noon, the solar cell composite display 10 is more likely to receive sunlight from a direction inclined from the normal direction nd to the first side 1s, as already described with reference to FIG. Such light L <b> 21, L <b> 22 passes through the first surface 32 a of the unit element 30 and is guided to the solar cell panel 50, and can be used for power generation in the solar cell panel 50. On the other hand, since sunlight is located at low altitudes in the morning and evening, it is impossible to efficiently capture the sunlight toward the solar cell panel 50 via the first surface 32a of the unit element 30. is there.

  On the other hand, as shown in FIG. 3, the display surface 12 of the display element 11 arranged on one lateral side surface 35 (third surface 32 c) of the element surface 31 is the lateral side (west side) of the display surface 12. It becomes easy to be visually recognized from. In the example shown in FIG. 3, the third side end 12c of the display surface 12 that is the third side 3s in the second direction d2 is the fourth side end of the display surface 12 that is the fourth side 4s in the second direction d2. It is closer to the main body 40 along the normal direction nd of the main body 40 than 12d. That is, the display surface 12 is inclined with respect to the sheet surface of the main body 40 so as to face the third side 3s. Therefore, when the solar cell composite display 10 is observed from the third side 3s in the second direction d2 with respect to the normal direction nd, that is, the directions D31 and D32 in the third angle range AR3 inclined to the west side in the horizontal direction. Moreover, it becomes easy to visually recognize the display surface 12. Therefore, when the observer observes the solar cell composite display 10 from the directions D31 and D32 inclined to the third side 3s in the second direction d2 with respect to the normal direction nd, the display object is excellently visible. 13 can be observed.

  On the other hand, as shown in FIG. 3, the second light L31, L32 incident on the solar cell composite display 10 from a direction different from the directions D31, D32 in which the display surface 12 is easily visible, that is, the second normal direction nd. In other words, the fourth side 4s in the direction d2, in other words, the light L31 and L32 incident on the solar cell composite display 10 from the direction inclined to the east side in the horizontal direction is incident on the display surface 12. hard. Such lights L31 and L32 are likely to enter the fourth surface 32d of the element surfaces 31 of the unit element 30.

  In the example shown in FIG. 3, the third side end of the fourth surface 32d that becomes the third side 3s in the second direction d2 is the fourth side end of the fourth surface 32d that becomes the fourth side 4s in the second direction d2. It is separated from the main body part 40 along the normal direction nd of the main body part 40 rather than the part. In other words, the fourth surface 32d is inclined with respect to the seat surface of the main body 40 so as to face the fourth side 4s. For this reason, the light L31, L32 directed toward the solar cell composite display 10 from the fourth side 4s in the second direction d2 with respect to the normal direction nd, that is, the direction in the fourth angle range AR4 inclined to the east side in the horizontal direction. Is likely to enter the fourth surface 32d of the surface 10a of the solar cell composite display 10 where the display element 11 is not provided. Lights L31 and L32 incident on the fourth surface 32d that are not covered with the display element 11 pass through the fourth surface 32d while being refracted and travel toward the solar cell panel 50.

  As described above, the lights L31 and L32 incident on the solar cell composite display body 10 from the fourth angle range AR4 that is different from the directions D31 and D32 in which the display surface 12 is easily visible are mainly directed to the solar cell panel 50. By transmitting the light, it is possible to achieve both the display function and the power generation function in the horizontal direction. When the surface 10a of the solar cell composite display 10 is observed from the third side 3s in the second direction d2 rather than the normal direction nd of the main body 40, that is, in the state shown in FIG. Of the first surface 32a, the second surface 32b, the third surface 32c, and the fourth surface 32d, the third surface 32c is observed to be the largest, and the fourth surface 32d is observed to be the smallest. That is, power generation can be carried out while making the solar cell panel 50 difficult to become familiar with the surrounding environment by having the light receiving surface 50a which is a single color of dark blue or black.

  In addition, depending on the installation position and installation angle of the light control sheet 20, unlike the example described above, a direction other than the direction that becomes the third side 3s (west side) in the second direction d2 (for example, the fourth side in the second direction d2). 4s (east side)), or other directions other than the third side 3s in addition to the direction of the third side 3s (for example, the direction of the third side 3s and the fourth side 4s in the second direction d2) In other words, it may be preferable to observe the display object 13 displayed by the display element 11. In that case, it is preferable to provide the display element 11 on the surface corresponding to the direction in which the display target 13 is preferably observed among the element surfaces 31 of the unit element 30. Further, for example, when two or more of the first surface 32a to the fourth surface 32d of the unit element 30 are covered with the display element 11, the unit element 30 is arranged on one surface of the first surface 32a to the fourth surface 32d. The display target 13 displayed by the display element 11 may be the same as or different from the display target 13 displayed by the display element 11 arranged on another surface. When different, it is possible to observe different display objects 13 by changing the direction of observing the solar cell composite display 10.

  In the first embodiment described above, the solar cell composite display 10 includes a sheet-like main body 40 having a pair of opposed main surfaces 40a and 40b, and a pair of main surfaces 40a of the main body 40. 40b and a solar cell panel 50 disposed to face either of the main body 40, and on one main surface 40a of the main body 40 in a direction parallel to both the sheet surface and the horizontal direction of the main body 40. A plurality of display surfaces 12 inclined with respect to the same are arranged. In particular, the solar cell composite display body 10 of the present embodiment includes a plurality of unit elements 30 that are arranged on one main surface 40a of the main body 40 and each form a convex portion or a concave portion. Are arranged on the surface of each unit element. Therefore, the display surface 12 can block the solar cell panel 50 from a specific direction, and the display surface 12 can be observed from the direction. On the other hand, light from directions other than the display direction not blocked by the display surface 12 can be effectively utilized for power generation by the solar cell panel 50 without being blocked by the display surface 12. Therefore, by making the solar cell panel 50 inconspicuous, it is possible to achieve harmony with the surrounding environment and achieve both the display by the display surface 12 and the power generation by the solar cell panel 50. Further, since the display surface 12 is disposed so as to cover at least a part of the lateral side surface 35 of the unit element 30, the display surface 12 can be observed from the lateral direction.

  Moreover, in this solar cell composite type display body 10, the several unit element 30 is further arranged along at least one direction on one main surface 40a. In particular, in the solar cell composite display body 10 of the present embodiment, the plurality of unit elements 30 cross the first direction d1 parallel to the one main surface 40a and the first direction d1 parallel to the one main surface 40a. They are arranged in close contact with the second direction d2. Therefore, one of the direction inclined to one side 1s in the first direction d1 and the direction inclined to the other side 2s in the first direction d1 is used as the sunlight incident direction for power generation, and the other is used as the display direction. In addition, the direction inclined to one side 3s in the second direction d2 and the direction inclined to the other side s4 in the second direction d2 are respectively used as the sunlight incident direction or display direction for power generation. be able to. That is, it becomes possible to finely divide the sunlight incident direction and the display direction for power generation. Thereby, the freedom degree of adjustment of the incident direction and display direction of sunlight utilized for electric power generation in this solar cell composite type display body 10 can be improved. As a result, the control of the power generation amount in the solar cell panel 50 and the control of the viewing angle of the display surface 12 can be performed with high accuracy.

  In the first embodiment described above, the unit element 30 forms a convex portion having a cone shape. Therefore, it is possible to classify the sunlight incident direction for power generation and the display direction with a high degree of freedom depending on how much the side surface of the cone shape is covered with the display element 11. Thereby, the freedom degree of adjustment of the incident direction and display direction of sunlight utilized for electric power generation can be improved more.

  In particular, when the unit element 30 forms a convex portion having a pyramid shape, the incident direction and the display direction of sunlight used for power generation can be more clearly distinguished. Accordingly, it is possible to realize effective display by the display element 11 and high-efficiency power generation by the solar cell panel 50 while making the solar cell panel 50 inconspicuous effectively.

  Further, since the plurality of unit elements 30 are arranged adjacent to each other, typically arranged on one surface of the main body portion 40 without a gap, the solar cell panel 50 is made less noticeable. Can do.

  Various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings as appropriate. 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-described embodiment are used for the parts that can be configured in the same manner as in the above-described embodiment, and are redundant. Description is omitted.

  In the above-mentioned embodiment, the example in which the unit element 30 was provided on the 1st surface 40a on the opposite side to the 2nd surface 40b which faces the solar cell panel 50 side of the main-body part 40 was shown. However, as shown in FIG. 5, the unit element 30 may be provided on the second surface 40 b facing the solar cell panel 50 side of the main body 40. In the example shown in FIG. 5, the main body 40 has a first surface 40 a and a second surface 40 b as a pair of main surfaces, and the first surface 40 a is the solar cell composite display body 10. The surface 10a and the surface of the light control sheet 20 are formed. The plurality of unit elements 30 are two-dimensionally arranged on the second surface 40 b of the main body 40.

  In the example shown in FIG. 5, each display element 11 is provided so as to cover one lateral side surface 35 (fourth surface 32 d) of the corresponding unit element 30. The display element 11 has a display surface 12 on the surface facing the unit element 30. Accordingly, as in the first embodiment described above, the display formed on the display surface 12 from the direction within the third angle range AR3 inclined to the third side 3s in the second direction d2 with respect to the normal direction nd. The object 13 can be observed.

  Further, the display element 11 does not cover the third surface 32 c of the corresponding unit element 30. The third surface 32c is closer to the main body 40 along the normal direction nd at the end of the third side 3s in the second direction d2 than the end of the fourth side 4s from the solar cell panel 50. It is separated. Therefore, it is difficult to observe the solar cell panel 50 through the third surface 32c of the light control sheet 20 from the direction D51 within the third angle range AR3. That is, it is difficult to observe the light receiving surface 50a of the solar cell panel 50 from the direction in which the display object 13 is easily observed. On the other hand, the light L51 in the direction within the fourth angle range AR4 tilted from the normal direction nd to the fourth side 4s in the second direction d2 passes through the light control sheet 20 and easily enters the solar cell panel 50. ing.

  Note that, in the solar cell composite display 10 shown in FIG. 5 as well, the display element 11 is a unit element depending on the installation position of the solar cell composite display 10 as in the first embodiment. 30 first surfaces 32a and second surfaces 32b can be covered.

  Next, another modification will be described with reference to FIG. In the first embodiment described above, an example in which the element surface 31 of the unit element 30 includes a flat surface has been described, but the present invention is not limited to this. As shown in FIG. 6, the element surface 31 may be formed in a curved surface shape. In the example shown in FIG. 6, the unit elements 30 have, for example, a hemispherical shape, and are two-dimensionally arranged on the second surface 40 b of the main body 40. The hemispherical element surface 31 includes a fourth side region 33a located on the fourth side 4s in the second direction d2 and a third side region 33b located on the third side 3s in the second direction d2. Yes. The display element 11 is provided on the element surface 31 so as to cover the fourth side region 33a. Similar to the example shown in FIG. 4, the display target formed on the display surface 12 from the direction D61 in the third angle range AR3 inclined to the third side 3s in the second direction d2 with respect to the normal direction nd. 13 is easily observed, while the solar cell panel 50 is difficult to observe. In addition, the light L61 and L62 from the direction in the fourth angle range AR4 inclined to the fourth side 4s in the second direction d2 with respect to the normal direction nd is transmitted through the light control sheet 20 and the solar cell panel 50. It is easy to enter.

  In the example shown in FIG. 6, the curved element surface 31 has a diffusion function of diffusing light toward the light receiving surface 50 a of the solar cell panel 50. Due to the light diffusion function of the element surface 31, sunlight is uniformly incident on the entire light receiving surface 50 a, thereby improving the power generation efficiency of the solar cell panel 50. In particular, in the illustrated example, the solar cell panel 50 is separated from the light control sheet 20 along the normal direction nd from the focal position fp of the element surface 31. Therefore, according to such an arrangement, the lights L61 and L62 included in the parallel light flux that is incident on the solar cell composite display 10 and travels toward the solar cell panel 50 are spread after being condensed at the condensing position xp. The solar cell panel 50 is reached. For this reason, it contributes to making the sunlight which injects into the solar cell composite display 10 reach the wide area | region of the solar cell panel 50. FIG.

  In the example shown in FIG. 6, the unit element 30 including the curved element surface 31 is disposed on the second surface 40 b of the main body 40, but is not limited thereto. You may arrange | position on the 1st surface 40a of the main-body part 40. FIG.

  Next, another modification will be described with reference to FIG. In the first embodiment described above, an example in which the unit element 30 forms a convex portion has been described. However, the present invention is not limited to this, and the unit element 30 may form a concave portion. In the example shown in FIG. 7, the optical element portion 25 is formed on one main surface 40 a of the main body portion 40. The optical element section 25 has a plurality of unit elements 30 that are two-dimensionally arranged on the main body section 40. In the illustrated example, the plurality of unit elements 30 are integrally formed. The unit element 30 includes a recess, and the inner surface of the recess forms an element surface 31. In the illustrated example, the element surface 31 has a hemispherical shape. The hemispherical element surface 31 includes a fourth side region 33a located on the fourth side 4s in the second direction d2 and a third side region 33b located on the third side 3s in the second direction d2. Yes. The display element 11 is provided on the element surface 31 so as to cover the fourth side region 33a. From the direction D71 within the third angle range AR3 inclined to the third side 3s in the second direction d2 with respect to the normal direction nd, the display object 13 formed on the display surface 12 is easily observed, while the sun The battery panel 50 becomes difficult to observe. In addition, the light L71 and L72 from the direction in the fourth angle range AR4 inclined to the fourth side 4s in the second direction d2 with respect to the normal direction nd is transmitted through the light control sheet 20 and the solar cell panel 50. It is easy to enter.

  In the example shown in FIG. 7, the unit element 30 including the curved element surface 31 is disposed on the first surface 40a of the main body 40. However, the present invention is not limited to this. You may arrange | position on the 2nd surface 40b of the main-body part 40. FIG. Further, in the example shown in FIG. 7, the example is shown in which the element surface 31 that forms the concave portion has a curved surface shape. However, the present invention is not limited thereto, and the element surface 31 that forms the concave portion may include a flat surface. Good.

  Next, another modification will be described with reference to FIG. In the above-described first embodiment, the solar cell panel 50 is separated from the light control sheet 20 and is a separate member. However, the present invention is not limited to this. As shown in FIG. 7, the light control sheet 20 and the solar cell panel 50 may be joined via an adhesive 60 or the like. According to such an example, position shift of the light control sheet 20 and the solar cell panel 50 can be effectively prevented.

  As another modification example, in the above-described first embodiment, the element surface 31 that is non-parallel to the sheet surface of the main body 40 shows an example in which the front surface or the back surface of the light control sheet 20 is formed. It is not limited to examples. The uneven surface of the optical element portion 25 formed by the element surface 31 of the unit element 30 may be resin-sealed. By making the front surface or the back surface of the light control sheet 20 a flat surface, it is possible to effectively prevent the accumulation of dirt such as dust, and to facilitate the cleaning operation.

  As another modification example, in the above-described first embodiment, the solar cell panel 50 is opposed to the light control sheet 20 and separated from the light control sheet 20. It is not limited to examples. The solar cell panel 50 may be bonded to the light control sheet 20 via an adhesive or an adhesive. According to such an example, position shift of the light control sheet 20 and the solar cell panel 50 can be effectively prevented.

  As yet another modification, the example in which the unit element 30 forms a convex portion having a quadrangular pyramid shape in the above-described first embodiment has been shown. However, the present invention is not limited to this, and as shown in FIG. 30 may form a convex portion or a concave portion having a shape obtained by removing a part including the apex from the quadrangular pyramid. In the example shown in FIG. 8, the unit element 30 forms a convex portion having a quadrangular pyramid shape. By making the unit element 30 into a frustum shape, the surface included in the element surface 31 increases. Therefore, a higher degree of freedom can be given to the display direction (viewing direction) of the display target 13.

  As yet another modification, the example in which the unit element 30 forms a convex portion having a quadrangular pyramid shape in the first embodiment described above is shown, but the present invention is not limited to this, and is shown in FIGS. 9 and 10. As an example, the unit element 30 may form a convex portion or a concave portion having a triangular pyramid shape. In this example, the element surface 31 of the unit element 30 has three flat surfaces. Hereinafter, specific examples shown in FIGS. 9 and 10 will be described. The plurality of unit elements 30 are arranged in a first direction d1, a second direction d2, and a third direction d3 that are non-parallel to each other. This unit element 30 forms a triangular pyramid-shaped convex part, and the bottom surface located on the main body part 40 is an equilateral triangle. Further, the three flat surfaces included in the element surface 31 have the same shape. In the example shown in FIG. 9, the plurality of unit elements 30 may be classified into a first group of unit elements 30a and a second group of unit elements 30b. The first group of unit elements 30a and the second group of unit elements 30b have the same shape but different directions. The plurality of first group unit elements 30a are configured in the same manner, and are arranged at a constant pitch in the first direction d1, the second direction d2, and the third direction d3. The plurality of second group unit elements 30b are configured in the same manner, and are arranged at a constant pitch in the first direction d1, the second direction d2, and the third direction d3. In the example shown in FIGS. 9 and 10, the element surface 31 of the unit element 30 has a flat surface facing six directions. Therefore, a higher degree of freedom can be given to the display direction (viewing direction) of the display target 13. Further, in the example shown in FIGS. 9 and 10, the plurality of unit elements 30 are arranged on one surface of the main body 40 without leaving a gap. Therefore, the light receiving surface 50a of the solar cell panel 50 can be effectively inconspicuous.

  In addition, instead of forming the convex portion or concave portion having a triangular pyramid shape, the unit element 30 has a convex portion or concave portion having a shape obtained by removing a part including the apex from the triangular pyramid, for example, as shown in FIG. May be formed. In the example shown in FIG. 11, the unit element 30 forms a convex portion having a triangular frustum shape. By making the unit element 30 into a frustum shape, the surface included in the element surface 31 increases. Therefore, a higher degree of freedom can be given to the display direction (viewing direction) of the display target 13.

  As yet another modification, the unit element 30 may form a convex portion or a concave portion having a pyramid shape other than a square or a triangle or a shape obtained by removing a part including a vertex from the pyramid. As an example, the unit element 30 shown in FIG. 13 forms a convex portion having a hexagonal pyramid shape. Moreover, the unit element 30 shown in FIG. 14 forms a convex portion having a shape obtained by removing a part including a vertex from a hexagonal pyramid. In particular, the unit element 30 shown in FIG. 14 forms a convex portion that becomes a hexagonal frustum. As an example, the unit elements 30 shown in FIGS. 13 and 14 can be arranged in a first direction d1, a second direction d2, and a third direction d3 that are non-parallel to each other, as shown in FIG. When the hexagon forming the bottom surface of the unit element 30 is a regular hexagon, the first direction d1, the second direction d2, and the third direction d3 are inclined by 60 ° with respect to each other, so that there is no gap on the main body 40. The unit elements 30 can be arranged. In the example shown in FIGS. 12 to 14, the element surface 31 of the unit element 30 has flat side surfaces that face six directions. Therefore, a higher degree of freedom can be given to the display direction (viewing direction) of the display target 13.

  When the unit element 30 has a pyramid shape or a shape in which a part including the apex is removed from the pyramid, a convex part or a concave part is formed, the incident direction and the display direction of sunlight used for power generation are more clearly classified. can do. Accordingly, it is possible to realize effective display by the display element 11 and high-efficiency power generation by the solar cell panel 50 while making the solar cell panel 50 inconspicuous effectively. In particular, when each unit element 30 forms a convex part or a concave part that has a triangular pyramid shape, a quadrangular pyramid shape, a hexagonal pyramid shape, or a shape obtained by removing a part including a vertex from these pyramids, a plurality of unit elements 30 can be arranged on one surface of the main body 40 without any gap. Thereby, the solar cell panel 50 can be made inconspicuous more effectively.

  As yet another modification, as shown in FIGS. 15 and 16, the unit element 30 may form a convex portion or a concave portion having a conical shape or a shape obtained by removing a part including the apex from the conical shape. . In this example, it is possible to classify the sunlight incident direction for power generation and the display direction with a higher degree of freedom by steplessly adjusting how much the side surface is covered with the display element 11. Thereby, the freedom degree of adjustment of the incident direction and display direction of sunlight utilized for electric power generation can be improved more. The unit elements 30 shown in FIGS. 15 and 16 may be arranged in two orthogonal directions as in the specific example shown in the above-described embodiment, or three non-parallel units as shown in FIG. It may be arranged in the direction. In the specific example shown in FIG. 16, the unit element 30 forms a convex portion that becomes a truncated cone.

  Furthermore, as another modified example, as shown in FIGS. 17 and 18, the unit element 30 may form a convex portion or a concave portion that has a shape forming a part of a sphere. In this example, it is possible to classify the sunlight incident direction for power generation and the display direction with a higher degree of freedom by steplessly adjusting how much the side surface is covered with the display element 11. Thereby, the freedom degree of adjustment of the incident direction and display direction of sunlight utilized for electric power generation can be improved more. The unit elements 30 shown in FIG. 17 and FIG. 18 may be arranged in two orthogonal directions as in the specific example shown in the above-described embodiment, or three non-parallel units as shown in FIG. It may be arranged in the direction. In the example shown in FIG. 17, the unit element 30 is a hemisphere. Further, in the specific example shown in FIG. 18, the bottom surface and the top surface of the unit element 30 are parallel.

  In the example shown in FIGS. 15 to 18, a part of the side surface 31 a of the element surface 31 is inclined in the horizontal direction with respect to the seat surface of the main body 40. That is, this portion becomes the lateral side surface 35. Also in such an example, the display element 11 can be observed from the lateral direction by arranging the display element 11 so as to cover at least a part of the lateral side surface 35 of the unit element 30.

  Furthermore, as another modified example, as shown in FIG. 19, the unit element 30 is a cube, a part of a cube, a rectangular parallelepiped, a part of a rectangular parallelepiped, an orthorhombic crystal, a part of an orthorhombic crystal, a cylinder such as a cylinder or a triangular prism, Or you may make it form the convex part or recessed part which becomes the shape which makes a part of pillar body, ie, various three-dimensional shapes. According to this example, it is possible to clearly distinguish the incident direction and display direction of sunlight used for power generation. Thereby, it becomes possible to realize effective display by the display element and high-efficiency power generation by the solar cell panel while making the solar cell panel 50 inconspicuous effectively. In the example shown in FIG. 19, the unit elements 30 are formed of convex portions having a cubic shape, and the plurality of unit elements 30 are regularly arranged in the first direction d1 and the second direction d2.

  Furthermore, as another modified example, as shown in FIGS. 20 to 28, the unit element 30 has a columnar convex portion or concave portion, or an end surface of the columnar convex portion or concave portion in the axial direction ad as a main body portion 40. A shape chamfered so as to be inclined with respect to the normal line direction nd may be formed. Here, the columnar shape is a three-dimensional shape including a portion having a constant cross-sectional shape and extending in the axial direction ad. A columnar body can be mentioned as a typical columnar unit element 30. Further, a three-dimensional shape that tapers at one or both ends and becomes a column at an intermediate portion thereof is also included in the columnar shape. In the example shown in FIGS. 23, 24, and 27, the unit element 30 is a triangular prism, and in the example shown in FIG. 28, the unit element 30 is a semi-cylinder. In the example shown in FIGS. 20, 21, and 25, the unit element 30 has a shape in which the end surface of the triangular prism in the axial direction ad is chamfered so as to be inclined with respect to the normal direction nd of the main body 40. In the example shown in FIGS. 22 and 26, the unit element 30 has a shape in which the end surface of the semicircular cylinder in the axial direction ad is chamfered so as to be inclined with respect to the normal direction nd of the main body 40. Yes. In any example, the unit element 30 extends such that its axial direction ad is along one surface 40 a of the main body 40.

  First, in the example shown in FIGS. 20 to 24, the plurality of unit elements 30 are arranged in the first direction d1 such that the axial direction ad of the columnar shape is along the first direction d1, and the second direction They are arranged at intervals or adjacent to d2. In the example shown in FIGS. 20 and 23, the plurality of unit elements 30 are arranged adjacent to each other in the second direction d2. As a result, in the example shown in FIGS. 20 and 23, the plurality of unit elements 30 are arranged in a lattice arrangement. On the other hand, in the example shown in FIGS. 21, 22 and 24, the plurality of unit elements 30 are arranged at intervals in the second direction d2. In the example shown in FIGS. 21, 22, and 24, the plurality of unit elements 30 are arranged in a staggered arrangement. In the example shown in FIGS. 20 to 22, the solar cell composite display 10 is installed such that the second direction d2 is along the vertical direction and the first direction d1 is along the horizontal direction. Further, in the example shown in FIGS. 23 and 24, the solar cell composite display 10 is installed such that the first direction d1 is along the vertical direction and the second direction d2 is along the horizontal direction.

  In the example shown in FIGS. 25 to 28, the plurality of unit elements 30 are arranged so that the axial direction ad of the columnar shape is along the first direction d1 and adjacent to the second direction d2. . In the example shown in FIGS. 25 and 26, the solar cell composite display 10 is installed such that the second direction d2 is along the vertical direction and the first direction d1 is along the horizontal direction. Moreover, in the example shown by FIG.27 and FIG.28, the solar cell composite type display body 10 is installed so that the 1st direction d1 may follow a vertical direction and the 2nd direction d2 may follow a horizontal direction.

  20 to 28, the end surface in the axial direction ad of the unit element 30 and the exposed side surface of the columnar shape form the element surface 31. By disposing the display element 11 so as to cover at least a part of the lateral side surface 35 of the element surface 31, the display element 11 can be observed from the lateral direction. Further, the unit element 30 forming the columnar convex portion or concave portion is excellent in moldability, and can be manufactured with high accuracy. Accordingly, it is possible to realize effective display by the display elements and high-efficiency power generation by the solar cell panel 50 while making the solar cell panel 50 inconspicuous effectively.

(Second Embodiment)
FIGS. 29 to 37 are diagrams for explaining the second embodiment and its modifications. 29 is a perspective view showing the configuration of the solar cell composite display 10 of the present embodiment, and FIG. 30 is a cross-sectional view of the solar cell composite display 10 corresponding to the line XXX-XXX in FIG. FIG. 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 first embodiment are used for the parts that can be configured in the same manner as in the first embodiment, and are duplicated. Description may be omitted.

  As shown in FIG. 29, the solar cell composite display body 10 of the present embodiment includes a light control sheet 20 having a sheet-like main body 40 having a pair of opposed main surfaces 40a and 40b, And a solar cell panel 50 disposed to face the main surface 40b of the main body 40 of the control sheet 20. In the illustrated example, a plurality of displays arranged in an inclined manner with respect to a direction parallel to both the sheet surface and the horizontal direction of the main body 40 inside the main body 40 of the solar cell composite display body 10. Element 11 is provided. In the illustrated example, a plurality of unit elements 30 are provided inside the main body 40, and each display element 11 is provided on an element surface 31 of each unit element. Each display element 11 has a display surface 12 for performing display. Therefore, in the illustrated example, a plurality of display surfaces 12 inclined with respect to a direction parallel to both the sheet surface and the horizontal direction of the main body 40 inside the main body 40 of the solar cell composite display body 10. Are arranged.

  The configuration and operational effects of the solar cell composite display 10 according to the present embodiment will be described. As shown in FIG. 30, when the solar cell composite display body 10 is observed from the directions D301 and D302 within the angle range AR3, the display elements 11 arranged mainly inside the main body 40 are observed. Therefore, the display element 11 mainly exhibits a display function for an observer who observes the solar cell composite display body 10 from the angle range AR3. On the other hand, light L301 and L302 incident from a direction within another angle range AR4 is mainly transmitted through the main body 40 and guided to the solar cell panel 50. Therefore, the solar cell panel 50 mainly exhibits a power generation function with respect to light incident on the solar cell composite display body 10 from the angle range AR4.

  As described above, according to the solar cell composite display body 10, the solar cell is used when the observer observes the display element 11 using the difference between the observation direction from the observer and the incident direction of the external light. The panel 50 is suppressed from being visually recognized, and it is possible to generate power with the solar panel 50 while maintaining harmony with the surroundings. In particular, in the example shown in FIG. 30, a plurality of display surfaces 12 inclined with respect to a direction parallel to both the sheet surface and the horizontal direction of the main body 40 are arranged in the main body 40. Thereby, the display target 13 can be visually recognized from the horizontal direction.

  Hereinafter, the configuration and operational effects of each member constituting the solar cell composite display body 10 of the present embodiment will be described in detail.

  The light control sheet 20 has a sheet-like main body 40. The main body 40 has a first surface 40a and a second surface 40b as a pair of main surfaces facing each other. The first surface 40 a of the main body 40 forms the surface 10 a of the solar cell composite display body 10. The second surface 40 b of the main body 40 faces the light receiving surface 50 a of the solar cell panel 50. 29 to 37, the main body 40 and the solar cell panel 50 are arranged such that the second surface 40b of the main body 40 and the light receiving surface 50a of the solar cell panel 50 are in contact with each other. However, the present invention is not limited thereto, and the main body 40 and the solar cell panel 50 are separated from each other, that is, have a gap between the second surface 40b of the main body 40 and the light receiving surface 50a of the solar cell panel 50, It may be arranged. Further, on the first surface 40 a or the second surface 40 b of the main body portion 40, a convex portion or a concave portion that exhibits a lens function for effectively guiding light incident on the solar cell composite display 10 to the solar cell panel 50. May be provided.

  A plurality of unit elements 30 are provided in the main body 40. Each unit element 30 extends along a first direction d1 parallel to the sheet surface of the main body 40, and is parallel to the sheet surface of the main body 40 and intersects the first direction d1, particularly the sheet surface of the main body 40. They are arranged along a second direction d2 that is parallel and orthogonal to the first direction d1. In the example shown in FIG. 3, two adjacent unit elements 30 are arranged in close contact along the second direction d2. In the illustrated example, the element surface 31 of each unit element 30 includes a first surface 32a inclined to the third side 3s in the second direction d2 and a second surface 32b inclined to the fourth side 4s in the second direction d2. And have. The first surface 32a and the second surface 32b of the element surface 31 are inclined with respect to a direction parallel to both the sheet surface of the main body 40 and the horizontal direction. Accordingly, the first surface 32 a and the second surface 32 b of the element surface 31 each constitute a lateral surface 35. In the illustrated example, the display element 11 is provided on the second surface 32 b of the element surface 31.

  Each display element 11 has a display surface 12 for performing display. Each display element 11 is disposed in the main body 40 so as to be inclined with respect to a direction parallel to both the sheet surface of the main body 40 and the horizontal direction. Therefore, the display surface 12 of each display element 11 is also inclined with respect to a direction parallel to both the sheet surface of the main body 40 and the horizontal direction. In the example shown in FIG. 29 and FIG. 30, the plurality of display surfaces 12 are arranged inside the main body 40 along the second direction d2 parallel to the sheet surface of the main body 40, and It extends in a direction parallel to the surface and intersecting the second direction d2, particularly in a first direction d1 parallel to the sheet surface of the main body 40 and perpendicular to the second direction d2. In the illustrated example, each display surface 12 is formed in a planar shape that is inclined so as to be directed to one side (third side 3s) in the second direction d2 as it approaches the first surface 40a of the main body 40. . FIGS. 29 to 37 show the solar cell composite display 10 arranged such that the first direction d1 is parallel to the vertical direction and the second direction d2 is parallel to the horizontal direction. Yes.

  As can be understood from FIG. 30, the display surface 12 is easily visually recognized when observed from directions D301 and D302 inclined to the fourth side 4s (east side) with respect to the normal direction nd. Therefore, the display function from the display surface 12 is effectively exhibited when observed from the directions (lateral directions) D301 and D302 inclined to the fourth side 4s with respect to the normal direction nd. On the other hand, light L301 and L302 incident from a direction within another angular range AR4 inclined to the third side 3s (west side) with respect to the normal direction nd is transmitted while being refracted through the first surface 40a of the main body 40. Then, the light passes through the first surface 32a of the unit element 30 toward the solar cell panel 50. That is, the region between the two display elements 11 adjacent in the second direction d2 functions as a light transmission region that guides incident light to the light receiving surface 50a of the solar cell panel 50.

  In addition, in FIG. 30, although each display surface 12 demonstrated the example which inclined so that it might go to the one side (3rd side 3s) of the 2nd direction d2 as it approached the 1st surface 40a of the main-body part 40 ,. Not limited to this, each display element 11 is provided on the first surface 32a of the unit element 30, so that each display surface 12 approaches the first surface 40a of the main body 40 in the second direction d2. It may be formed so as to incline toward the other side (fourth side 4s). In this case, the display function is mainly exhibited to an observer who observes the solar cell composite display 10 from a direction inclined to the third side 3s (west side) with respect to the normal direction nd, and with respect to the normal direction nd. The power generation function is mainly exhibited with respect to light incident on the solar cell composite display 10 from the direction inclined to the fourth side 4s (east side).

  The solar cell composite display 10 having the above configuration can be manufactured by the following method as an example. First, the 1st part 401 which has the several unit element 30 provided on the base part 402 and the base part 402 is produced by shape | molding transparent resin. For the molding, hot-melt extrusion processing, injection molding, or the like can be employed. Next, the display element 11 is formed on the second surface 32 b of each unit element 30. As an example, the display element 11 can be disposed on the second surface 32b of each unit element 30 by inkjet printing. Next, the 2nd part 405 which consists of transparent resin is provided so that each unit element 30 and the display element 11 may be covered, and the main-body part 40 is created. Then, the solar cell panel 50 is installed so as to face the second surface 40b of the main body 40. Thereby, the solar cell composite display 10 is obtained.

  In the second embodiment described above, the solar cell composite display 10 includes a sheet-like main body 40 having a pair of opposed main surfaces 40a and 40b, and a pair of main surfaces 40a of the main body 40. A plurality of solar cell panels 50 disposed to face any one of 40b and inclined in a direction parallel to both the sheet surface of the main body 40 and the horizontal direction inside the main body 40. Display surfaces 12 are arranged. In particular, in the solar cell composite display body 10 of the present embodiment, the plurality of display surfaces 12 are arranged inside the main body 40 along the second direction d2 parallel to the sheet surface of the main body 40. Therefore, the display surface 12 can block the solar cell panel 50 from a specific direction, and the display surface 12 can be observed from the direction. On the other hand, light from directions other than the display direction not blocked by the display surface 12 can be effectively utilized for power generation by the solar cell panel 50 without being blocked by the display surface 12. Therefore, by making the solar cell panel 50 inconspicuous, it is possible to achieve harmony with the surrounding environment and achieve both the display by the display surface 12 and the power generation by the solar cell panel 50. Further, since the display surface 12 is disposed so as to cover at least a part of the lateral side surface 35 of the unit element 30, the display surface 12 can be observed from the lateral direction.

  Various modifications can be made to the above-described second embodiment. Hereinafter, an example of modification will be described with reference to the drawings as appropriate. 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-described embodiment are used for the parts that can be configured in the same manner as in the above-described embodiment, and are redundant. Description is omitted.

  FIGS. 31 to 37 are perspective views showing the light control sheet 20 together with the solar cell panel 50, and are diagrams for explaining each modification of the above-described second embodiment.

  As a modification, in the above-described second embodiment, an example in which each display surface 12 is formed in a planar shape is shown. However, the present invention is not limited to this, and each display surface 12 is formed in a curved surface shape or a folded surface shape. It may be. For example, FIG. 31 shows that each display surface 12 is formed in a curved surface shape. In the illustrated example, each unit element 30 is formed in a semi-cylindrical shape, and is arranged so that its axis is parallel to the first direction d1. Each display element 11 is formed so as to cover at least a part of the lateral side surface 35 of the unit element 30. Thereby, in a cross section parallel to both the normal direction of the main body 40 and the arrangement direction of the display surface 12 (second direction d2), each display surface 12 becomes closer to the first surface 40a of the main body 40. It is formed in a curved shape that bends toward one side of the two directions d2. Each display surface 12 is parallel to the sheet surface of the main body 40 and intersects with the arrangement direction of the display surface 12, in particular, a direction parallel to the sheet surface of the main body 40 and orthogonal to the arrangement direction of the display surface 12 (first order). In one direction d1), it has the same cross-sectional shape and extends.

  According to the solar cell composite display 10 shown in FIG. 31, each display surface 12 is formed in a curved shape, so that the angle range in which the display surface 12 can be visually recognized can be widened. Therefore, the observer can observe the display object 13 including the plurality of display surfaces 12 from a wider angle range in the horizontal direction. That is, the visibility of the display target 13 can be effectively improved.

  As another modification, in the modification described with reference to the above-described second embodiment and FIG. 31, the plurality of display surfaces 12 are along the second direction d2 parallel to the sheet surface of the main body 40. However, the present invention is not limited to this, and a plurality of display surfaces 12 are arranged in a first direction d1 parallel to the sheet surface of the main body 40, and in a first direction d1 parallel to the sheet surface of the main body 40. You may arrange | position closely or closely_contact | adhere to the 2nd direction d2 which cross | intersects. 32 to 35, the plurality of display surfaces 12 are arranged in a first direction d1 parallel to the sheet surface of the main body 40, and are parallel to the sheet surface of the main body 40 and intersect the first direction d1. The second direction d2 is also arranged separately. 36 and 37, the plurality of display surfaces 12 are arranged in a first direction d1 parallel to the sheet surface of the main body 40, and are parallel to the sheet surface of the main body 40 and in the first direction d1. 1 are shown in close contact with each other in the second direction d2 that intersects with. However, the present invention is not limited to this, and the plurality of display surfaces 12 are arranged in close contact with each other in the first direction d1 parallel to the sheet surface of the main body 40, and are parallel to the sheet surface of the main body 40 and intersect the first direction d1. The plurality of display surfaces 12 may be arranged apart from each other in the second direction d <b> 2, and are arranged in close contact with each other in the first direction d <b> 1 parallel to the sheet surface of the main body 40 and parallel to the sheet surface of the main body 40. Further, it may be arranged in close contact with the second direction d2 intersecting the first direction d1.

  In the example shown in FIGS. 32 and 33, the plurality of display surfaces 12 are spaced apart from each other in a first direction d1 parallel to the sheet surface of the main body portion 40, and are parallel to the sheet surface of the main body portion 40 and first. They are also arranged apart from each other in the second direction d2 that intersects the direction d1. In the example shown in FIG. 32, each display surface 12 is formed in a planar shape that is inclined so as to be directed to one side in the second direction d <b> 2 as it approaches the first surface 40 a of the main body 40. In the example shown in FIG. 33, each display surface 12 is formed in a curved shape that bends toward one side in the second direction d2 as it approaches the first surface 40a of the main body 40.

  FIG. 34 shows a plurality of display surfaces 12 arranged in a staggered pattern in the first direction d1 and the second direction d2. In the illustrated example, each display surface 12 is formed in a curved shape that bends toward one side in the second direction d2 as it approaches the first surface 40a of the main body 40. However, the present invention is not limited to this, and each display surface 12 may be formed in a planar shape inclined toward one side in the second direction d2 as it approaches the first surface 40a of the main body 40.

  In FIG. 35, a plurality of display surfaces 12 are arranged apart from each other in a first direction d1 parallel to the sheet surface of the main body 40, and are parallel to the sheet surface of the main body 40 and intersect with the first direction d1. Also shown in the direction d2 are arranged separately. In the illustrated example, each unit element 30 is formed in a semi-cylindrical shape, and is arranged so that its axis is parallel to the first direction d1. Each display element 11 is formed so as to cover at least a part of the lateral side surface 35 of the unit element 30. In the illustrated example, the display surface 12 of each display element 11 is formed in an arc shape such as a semicircular shape in a cross section parallel to both the normal direction of the main body 40 and the second direction d2, and the first direction d1. And have the same cross-sectional shape. Accordingly, in the illustrated example, each display surface 12 has a semi-cylindrical shape.

  In FIG. 36, the plurality of display surfaces 12 are arranged in a first direction d1 parallel to the sheet surface of the main body 40, and are parallel to the sheet surface of the main body 40 and intersect the first direction d1. What is arranged in close contact with the direction d2 is shown. In the illustrated example, each unit element 30 is formed in a quadrangular prism shape, and is arranged so that its axis is parallel to the first direction d1. Each unit element 30 has a cross section parallel to both the normal direction and the second direction d2 of the main body 40, and the upper base (the bottom of the relatively short side) faces the first surface 40a side of the main body 40. The trapezoidal shape is formed such that the lower base (the bottom of the relatively long side) faces the second surface 40b side of the main body 40. The element surface 31 of each unit element 30 includes a lateral side surface 35 inclined with respect to a direction parallel to both the sheet surface and the horizontal direction of the main body 40, and an upper surface 36 parallel to the sheet surface of the main body 40. ,have. Each display element 11 is formed so as to cover at least a part of the lateral side surface 35 of the unit element 30. According to such an example, the observer can observe the display object 13 including the plurality of display surfaces 12 from the lateral direction, and uses the upper surface 36 of the unit element 30 as a light transmission surface. Therefore, the power generation efficiency by the solar cell panel 50 can be improved. However, the present invention is not limited to this, and each display element 11 may be formed so as to cover at least a part of the upper surface 36 of the unit element 30.

  In FIG. 37, a plurality of display surfaces 12 are arranged in a first direction d1 parallel to the sheet surface of the main body 40, and are parallel to the sheet surface of the main body 40 and intersect the first direction d1. What is arranged in close contact with the direction d2 is shown. In the illustrated example, each unit element 30 is formed in a curved shape such as an arc shape in a cross section parallel to both the normal direction of the main body 40 and the second direction d2, and the normal direction of the main body 40 and In a cross section parallel to both of the first directions d1, it is formed in a curved shape such as an arc. In particular, in the illustrated example, each unit element 30 is formed in a semicircular shape in a cross section parallel to both the normal direction of the main body 40 and the second direction d2, and the normal direction and the first direction of the main body 40. In the cross section parallel to both of d1, it is formed in the circular arc shape which approaches the 2nd surface 40b of the main-body part 40 as it goes to the other side (lower side) from the one side (upper side) of the 1st direction d1. Each display element 11 is formed so as to cover at least a part of the lateral side surface 35 of the unit element 30. According to such an example, the angle range in which the display surface 12 of each display element 11 can be visually recognized can be expanded not only in the horizontal direction but also on the lower side. Therefore, the observer can observe the display object 13 including the plurality of display surfaces 12 from a wider angle range than the horizontal direction and the downward direction. That is, the visibility of the display target 13 can be effectively improved. Moreover, since the surface which faces the one side (upper side) of the 1st direction d1 of the unit element 30 can be utilized as a light transmissive surface, the power generation efficiency by the solar cell panel 50 can be improved.

  As still another modification, FIGS. 35 to 37 show an example in which the display surface 12 is arranged in a grid pattern in the first direction d1 and the second direction d2, but the present invention is not limited to this, and the unit element 30 is the first element. The display surfaces 12 may be arranged in a staggered manner in the direction d1 and the second direction d2, and thereby the display surfaces 12 may be arranged in a staggered manner in the first direction d1 and the second direction d2.

  In addition, although the some modification with respect to each embodiment mentioned above has been described above, naturally, it is also possible to apply a combination of a plurality of examples and a plurality of modifications as appropriate.

d1 1st direction 1s 1st side 2s 2nd side d2 2nd direction 3s 3rd side 4s 4th side d3 3rd direction nd Normal direction ad Axial direction 10 Solar cell composite display body 10a Front surface 10b Back surface 11 Display element 12 Display surface 13 Display target 20 Light control sheet 25 Optical element unit 30 Unit element 31 Element surface 31a Side surface 32a First surface 32b Second surface 32c Third surface 32d Fourth surface 33a First side region 33b Second side region 35 Side surface 40 Main body 40a First surface 40b Second surface 50 Solar cell panel 50a Light-receiving surface

Claims (6)

A sheet-like main body having a pair of opposing main surfaces;
A solar cell panel disposed opposite to one of the pair of main surfaces of the main body,
A plurality of display surfaces inclined with respect to a direction parallel to both the sheet surface and the horizontal direction of the main body are arranged on one main surface of the main body or inside the main body. A solar cell composite display. A plurality of unit elements arranged on one main surface of the main body part, each forming a convex part or a concave part,
Each display surface is a solar cell composite-type display body of Claim 1 arrange | positioned on the surface of each unit element.   The solar cell composite display according to claim 2, wherein the plurality of unit elements are arranged along at least one direction on the one main surface.   The plurality of unit elements are arranged apart from or closely in contact with a first direction parallel to the one main surface and a second direction parallel to the one main surface and intersecting the first direction. The solar cell composite display according to claim 2.   2. The solar cell composite display according to claim 1, wherein the plurality of display surfaces are arranged inside the main body portion along at least one direction parallel to a sheet surface of the main body portion.   The plurality of display surfaces are spaced apart or closely arranged in a first direction parallel to the sheet surface of the main body and a second direction parallel to the sheet surface of the main body and intersecting the first direction. The solar cell composite display according to claim 5.

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