JP2017046560A - Solar cell device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell device that has a simple structure and is easy to construct.SOLUTION: A solar cell device 1 comprises: a basic structure 2 disposed on an installation surface P; a frame 3 disposed on the basic structure 2; and a solar cell module 4 disposed on the frame 3. The basic structure 2 comprises: a main pile member 20 provided such that the frame 3 is disposed on one-end side and the other-end side is extended upright on the installation surface P; a first basal part 21 fixed on the one-end side of the main pile member 20; a first tubular member 22 turnably provided with respect to the first basal part 21 and having a tubular part; and a sub-pile member 23 provided at an angle to the upright direction of the main pile member 20 while part of it is inserted in the tubular part of the first tubular member 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a solar cell device.

  In recent years, the use of solar cell devices with low environmental impact has been increasing. For example, a solar cell device is known in which a simple support is driven into farmland, a power generation facility is installed on the support, and solar power generation is performed while continuing farming. Such a solar cell device is required to be firmly fixed to the soft ground of farmland.

  Then, the solar cell apparatus provided with the pile piled up diagonally in the ground as a foundation is proposed (for example, refer the following patent document 1).

JP 2014-31700 A

  However, a pile driven into the basement at an inclination may interfere with, for example, excavation claws of an agricultural machine and cannot perform sufficient deep plowing, which may hinder production of agricultural products.

  One of the objects of the present invention is to provide a solar cell device having a simple structure and good workability with less hindrance to the production of agricultural products.

  A solar cell device according to an embodiment of the present invention includes a foundation structure disposed on an installation surface, a frame disposed on the foundation structure, and a solar cell module disposed on the frame. A main pile member provided with the gantry on one end side and the other end side being upright with respect to the installation surface; and the main pile member A first base portion fixed to the one end side of the member, a first tubular member having a tube portion rotatably provided with respect to the first base portion, and the tube portion of the first tubular member; And a sub-pile member provided to be inclined with respect to the upright direction of the main pile member in a state where a part thereof is inserted.

  According to the solar cell device having the above configuration, there are few obstacles to the production of agricultural products, and the workability is good with a simple structure.

FIG. 1 is a diagram showing one embodiment of a solar cell device according to the present invention, FIG. 1 (a) is a perspective view, and FIG. 1 (b) is a part of FIG. 1 (a) viewed from the X-axis direction. FIG. 2 is a diagram showing an example of a solar cell module constituting the solar cell device shown in FIG. 1. FIG. 2 (a) is a plan view of the solar cell module viewed from the light receiving surface side, and FIG. It is an end elevation in AA 'line of Drawing 2 (a). 3 is a diagram showing a basic structure constituting the solar cell device shown in FIG. 1. FIG. 3 (a) is a side view seen from the X-axis direction, and FIG. 3 (b) is seen from the Y-axis direction. A front view and FIG. 3C are plan views. FIG. 4 is a perspective view of a first base part constituting the foundation structure shown in FIG. FIGS. 5A and 5B are views showing the first tubular member constituting the foundation structure shown in FIG. 3. FIG. 5A is a plan view and FIG. 5B is a side view. FIGS. 6A and 6B are diagrams showing another embodiment of the first tubular member shown in FIG. 5. FIG. 6A is a plan view and FIG. 6B is a side view. FIG. 7 is a view showing another embodiment of the solar cell device according to the present invention, and is a perspective view of a first base part constituting the foundation structure. FIG. 8 is a view showing another embodiment of the solar cell device of the present invention, and FIG. 8 (a) is an assembly view of a main pile member, a first base and a second base constituting the foundation structure, FIG. 8B is an enlarged side view showing a portion corresponding to the portion B in FIG.

  Hereinafter, an example of a solar cell device according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, about the member of the same name which comprises a solar cell apparatus, the same code | symbol shall be attached | subjected and the overlapping description is abbreviate | omitted.

<< First Embodiment >>
As shown in FIG. 1, the solar cell device 1 includes a foundation structure 2, a frame 3 disposed on the foundation structure 2, and a solar cell module 4 disposed on the frame 3. . The solar cell device 1 is installed on the ground, which is a farmland for cultivating crops. In the following description, the ground is assumed to be a horizontal installation surface P for easy understanding.

  A coordinate axis parallel to the installation surface P and perpendicular to the tilt direction of the solar cell panel 10 constituting the solar cell device 1 is defined as an X axis, and a direction along the X axis is defined as an X axis direction. A coordinate axis parallel to the installation surface P and perpendicular to the X axis is defined as a Y axis, and a direction along the Y axis is defined as a Y axis direction. A coordinate axis parallel to the vertical direction is taken as a Z axis, and a direction along the Z axis is taken as a Z axis direction. In the following description, the direction against gravity is referred to as “up”, and the direction following gravity is referred to as “down”.

  Next, each member of the solar cell device 1 will be described.

<Basic structure>
The foundation structure 2 arranged on the installation surface P has a function as a base of the solar cell device 1. As shown in FIGS. 1, 3, and 4, the foundation structure 2 includes a main pile member 20 provided in a state in which the gantry 3 is disposed on one end side and the other end is driven into the installation surface P, and the ground A first base 21 fixed to one end of the main pile member 20 at a predetermined height from the installation surface P, and a sub-pile member 23 provided on the first base 21 via the first tubular member 22. Have. Here, the first base portion 21 has a plurality of plate-like first flange portions 21a. A first hole 21b is provided at the center of the main surface of each first flange portion 21a. The first tubular member 22 is attached to the first hole portion 21b using a first screw member 22d. Further, the first tubular member 22 holds the sub-pile member 23 by inserting a part of the sub-pile member 23.

  As shown in FIG. 4, the first base 21 is a substantially cross-shaped plate. When the first base portion 21 is viewed from above in the Z-axis direction shown in FIG. 4, overhang portions 21g are provided in the X-axis direction and the Y-axis direction, respectively. Moreover, the 2nd hole 21c which can penetrate the main pile member 20 is provided in the center part 21f when the 1st base 21 is planarly viewed. A second flange portion 21d extending in the Z-axis direction is provided at the periphery of the second hole portion 21c. Furthermore, the 3rd hole 21e is provided in the side surface of the 2nd flange part 21d.

The first base portion 21 is screwed to the main pile member 20, for example, by inserting the main pile member 20 through the second hole portion 21c and inserting a bolt or the like into the third hole portion 21e of the second flange portion 21d. in this case,
The main pile member 20 has a dent to which a bolt or the like is screwed or a screw hole. Thereby, the 1st base 21 is fixed to the predetermined height of the main pile member 20. FIG.

  As described above, the first base portion 21 has the four protruding portions 21g that protrude from the central portion 21f in both directions along the X axis and in both directions along the Y axis. A plate-shaped first flange portion 21a extending from each of the overhang portions 21g so as to hang downward in the Z-axis direction is provided. When the first base portion 21 is viewed from above in the Z-axis direction, the two pairs of first flange portions 21a are arranged point-symmetrically around the central portion 21f in each pair.

  Furthermore, each 1st flange part 21a has the 1st hole 21b. The first hole portion 21b is used for fixing the first tubular member 22 to the first flange portion 21a. Such a first base 21 can be formed by press molding. The first base portion 21 can be made of stainless steel or a steel material that has been subjected to hot dip galvanization. In addition, you may attach the bush with a hook etc. to the 2nd flange part 21d separately.

  The first tubular member 22 is a member for inserting and holding a part of the sub-pile member 23. As shown in FIG. 5, the first tubular member 22 includes a main body portion 22a, a grip portion 22c connected to the main body portion 22a via a hinge portion 22b, and a first screw member 22d.

  The hinge part 22b has a function of opening and closing while connecting the body part 22a and the grip part 22c. The first screw member 22d is a member having a shaft portion such as a bolt. The first screw member 22d fixes the main body portion 22a and the grip portion 22c to the first hole portion 21b provided in the first flange portion 21a of the first base portion 21, and also connects the main body portion 22a and the grip portion 22c. It has a function of tightening and holding the auxiliary pile member 23 between them. In the following, a portion composed of the main body portion 22a and the grip portion 22c is referred to as a tube portion 22e.

  By loosening the 1st screw member 22d, between the main-body part 22a and the holding part 22c can be opened, and the subpile member 23 can be penetrated in this part. Further, the first tubular member 22 is rotated around the shaft portion of the first screw member 22d in parallel to the surface of the first flange portion 21a, and the normal direction H (see FIG. 5) with respect to the plane 22h surrounded by the tube portion 22e. As shown in FIG. 5 (a), the tube portion 22e can be seen in a plan view in the direction along the extending direction, and the normal direction of the plane 22h surrounded by the tube portion 22e can be directed in a desired direction. Further, by tightening the first screw member 22d, the sub-pile member 23 is fastened and fixed between the main body portion 22a and the grip portion 22c. The sub-pile member 23 is fixed to the first base portion 21 with the first tubular member 22 facing in a predetermined direction. Since the first tubular member 22 has the above-described structure, the first tubular member 22 has two functions of fixing to the first base 21 by the first screw member 22d and fixing the auxiliary pile member 23, and reducing the number of members. The structure can be simplified. Such a 1st tubular member 22 is formed with the steel materials etc. which gave the hot dip galvanization.

  The first tubular member 22 may have a shape other than that shown in FIG. 5, for example, as shown in FIG. 6, a tube portion 22e, a plate portion 22f connected to the tube portion 22e, and a plate portion 22f. The first screw member 22d provided and the second screw member 22g provided on the tube portion 22e may be used. In this case, it is good to provide a dent in the part corresponding to the 2nd screw member 22g of the sub pile member 23, and to make it slip.

  The main pile member 20 and the sub pile member 23 are both rod-shaped steel pipes having an outer diameter of about 50 mm and a plate thickness of about 2.5 mm that have been subjected to hot dip galvanization. In addition, after installation of the solar cell device 1, the portion near the installation surface P is for countermeasures such as wear of hot dip galvanization with gravel or acceleration of corrosion due to adhesion of organic substances contained in soil. In addition, it is advisable to increase the corrosion resistance by applying a corrosion-resistant paint with a thick film. The main pile member 20 is driven and fixed in an upright state on the installation surface P with the longitudinal direction vertical (the other end side of the main pile member 20 is driven into the installation surface P).

  Next, the sub pile member 23 will be described. Hereinafter, the sub pile members 23 attached to the respective first tubular members 22 are referred to as a first sub pile member 23A, a second sub pile member 23B, a third sub pile member 23C, and a fourth sub pile member 23D. And

  As shown in FIGS. 3A to 3C, a pair of the first sub-pile member 23A and the second sub-pile member 23B, and a pair of the third sub-pile member 23C and the fourth sub-pile member 23D are These are arranged on the first base 21 so as to be symmetric with respect to the Z axis passing through the center of the central portion 21f of the first base 21. And when the foundation structure 2 is viewed in plan from above in the Z-axis direction (when one end portion side of the main pile member 20 is viewed in plan), a pair of the first auxiliary pile member 23A and the second auxiliary pile member 23B is Arranged along the XZ plane. A pair of the third sub pile member 23C and the fourth sub pile member 23D is arranged along the YZ plane. Thus, when the foundation structure 2 is planarly viewed from the one end side along the longitudinal direction of the main pile member 20, each pair of sub-pile members 23 is arranged along different directions. Further, these sub-pile members are disposed so as to be inclined in different directions as each pair of sub-pile members 23 along the XZ plane and the YZ plane go downward. Specifically, the first sub-pile member 23 </ b> A is arranged to be inclined toward the −X axis direction side as it goes downward. Moreover, the 2nd sub pile member 23B is inclined and arrange | positioned in the + X-axis direction as it goes below. Further, the third sub-pile member 23C is arranged to be inclined in the −Y axis direction as it goes downward. Moreover, 4th sub pile member 23D is inclined and arrange | positioned at a + Y-axis direction as it goes below. In particular, as shown in FIG. 3C, when one end of the main pile member 20 is viewed in plan, one pair of sub-pile members 23 and the other pair of sub-pile members 23 are orthogonal to each other. Are arranged as follows.

  As described above, when the first sub-pile member 23A and the second sub-pile member 23B are projected onto a plane (XZ plane) parallel to the respective longitudinal directions, the first sub-pile member 23A and the second sub-pile member 23B are arranged so as to approach each other toward the upper end. The Similarly, when the third sub-pile member 23C and the fourth sub-pile member 23D are projected onto a plane (YZ plane) parallel to each longitudinal direction, the third sub-pile member 23C and the fourth sub-pile member 23D are arranged so as to approach each other as they approach the upper end. .

<Construction method of foundation structure 2>
Below, the construction method of the foundation structure 2 is demonstrated.

  First, the main pile member 20 is driven to a length of about 1 m perpendicularly to the installation surface P using a pile driver. Next, the first base portion 21 is fixed to the main pile member 20 with a predetermined height from the installation surface P by screwing. The distance between the 1st base 21 and the installation surface P should just be the height more than mud jumps by raindrop. For example, the distance between the first base 21 and the surface P may be about 20 cm. Thereby, it can suppress that the 1st base 21, the 1st tubular member 22, and the subpile member 23 corrode with the mud which entered the clearance gap between the members which are hard to wash away by rain.

  And the 1st tubular member 22 is temporarily fixed to each 1st flange part 21a of the 1st base 21 with the 1st screw member 22d.

  Next, the sub pile member 23 is inserted into each first tubular member 22, and the first tubular member 22 is rotated to adjust the angle of the sub pile member 23. Thereafter, the first screw member 22 d is tightened to temporarily fix the sub-pile member 23 to the first tubular member 22. At this time, the inclination angle of the first sub-pile member 23A is adjusted and fixed to an angle that can avoid the interference of the agricultural machinery in consideration of the range and depth of the agricultural machinery excavation claws. For example, in FIG. 1, when the agricultural machine is moved along the Y-axis direction for deep plowing, the inclination angle of the first auxiliary pile member 23A and the second auxiliary pile member 23B with respect to the main pile member 20 is reduced, and the third auxiliary The inclination angle of the pile member 23C and the fourth sub-pile member 23D may be increased.

  Next, using the first tubular member 22 as a guide, each sub-pile member 23 is driven obliquely into the installation surface P with a pile driving machine. The sub-pile member 23 may be driven to a length of about 1.5 m below the installation surface P. And the 1st screw member 22d of each 1st tubular member 22 is tightened, and while fixing the 1st tubular member 22 to the 1st base 21, the subpile member 23 is grasped by the pipe part 22e.

<Stand>
As shown in FIG. 1, the gantry 3 includes a column member 31, a beam member 32, and a girder member 33.

  The column member 31 is disposed on the foundation structure 2 so that the longitudinal direction thereof is perpendicular to the installation surface P. The column member 31 supports the beam member 32 at an upper portion thereof. Moreover, the height of the pillar member 31 and the space | interval of adjacent pillar members 31 are made into the dimension which can use an agricultural machine under the solar cell apparatus 1. FIG. For example, the height to the upper end of the column member 31 is preferably 3 m or more so that the beam member 32 can be disposed at a height of 3 m or more. Further, the interval between the adjacent column members 31 in the X-axis direction and the Y-axis direction is about 5 m. As the column member 31, for example, a steel pipe having a round cross section or a square cross section made of general structural carbon steel or stainless steel can be used.

  The beam member 32 is a long member that is arranged between the adjacent column members 31 arranged in the Y-axis direction with the Y-axis direction as the longitudinal direction. The column member 31 and the beam member 32 are connected using, for example, a joint member (not shown) having a mechanism for gripping two steel pipes at a predetermined angle. The beam member 32 can be a tubular member made of the same material as the column member 31.

  The girder member 33 is a long member that passes between adjacent beam members 32 arranged in the X-axis direction with the X-axis direction as the longitudinal direction. The girder member 33 is connected to the beam member 32 using a joint member (not shown). The plurality of beam members 33 are arranged side by side so as to be parallel to each other in the Y-axis direction at substantially the same interval as the width of the solar cell module 4 in the Y-axis direction. A pair of adjacent girder members 33 support the frame 15 that protects the two opposite sides of the solar cell panel 10 by a metal fitting 33 a attached to the girder member 33. The height of the metal fitting 33a attached to the girder member 33 is such that the metal fitting 33a on the + Y-axis direction side is higher than the metal fitting 33a on the -Y-axis direction side. Thereby, the solar cell module 4 can be inclined and attached so that the + Y-axis direction side is high and the -Y-axis direction side is low. For the girder member 33, a tubular steel material made of the same material as the column member 31 and the beam member 32 can be used.

<Solar cell module>
As shown in FIG. 2, the solar cell module 4 has a rectangular solar cell panel 10. The solar cell panel 10 has a light receiving surface 10a (front surface) and a back surface 10b located on the opposite side of the light receiving surface 10a. The solar cell module 4 is disposed on the mount 3 so as to be inclined with respect to the installation surface P so that the light receiving surface 10a can receive light suitably.

  The solar cell panel 10 includes a translucent substrate 11, a plurality of solar cell elements 12 disposed at predetermined positions with respect to the translucent substrate 11 and electrically connected to each other, and the periphery of the solar cell elements 12. And a back surface protection member 14 are laminated.

  The translucent substrate 11 has a function of protecting the solar cell element 12 and the like from the light receiving surface 10a side. Examples of the translucent substrate 11 include tempered glass or white plate glass.

The solar cell element 12 has a function of converting incident light into electricity. Such a solar cell element 12 includes, for example, a semiconductor substrate made of single crystal silicon or polycrystalline silicon, and electrodes provided on the front surface (upper surface) and the back surface (lower surface) of the semiconductor substrate. The solar cell element 12 having a single crystal silicon substrate or a polycrystalline silicon substrate has, for example, a quadrangular shape in plan view. At this time, the size of one side of the solar cell element 12 is, for example, 100 to 200 mm.

  In addition, the kind in particular of the solar cell element 12 is not restrict | limited. In addition to the above, for example, a thin-film solar cell element in which the photoelectric conversion portion of the solar cell element is made of an amorphous silicon-based material, a chalcopyrite-based material such as CIGS, or a CdTe-based material may be employed. As the above-described thin-film solar cell element, for example, a glass substrate on which a photoelectric conversion layer made of amorphous silicon, CIGS, CdTe, or the like, a transparent electrode, and the like are appropriately stacked can be used. Such a thin-film solar cell element is obtained by patterning and integrating the photoelectric conversion layer and the transparent electrode on a glass substrate. Therefore, in the thin film solar cell element, the wiring material 16 that connects the plurality of photoelectric conversion layers can be eliminated. Furthermore, the solar cell element 12 may be of a type in which a thin film of amorphous silicon is formed on a single crystal or polycrystalline silicon substrate.

  Further, in the solar cell panel 10, adjacent solar cell elements 12 are electrically connected by a wiring material 16. For example, the wiring member 16 electrically connects an electrode located on the surface of one solar cell element 12 and an electrode located on the back surface of the other solar cell element 12. Thereby, the several solar cell element 12 is arranged so that it may be connected in series. Examples of such a wiring member 16 include a copper foil coated with solder.

  The filler 13 is provided on both main surface sides of the solar cell element 12. Thereby, the filler 13 has a function of sealing the solar cell element 12. Examples of the filler 13 include thermosetting resins such as transparent ethylene vinyl acetylate copolymers.

  The back surface protection member 14 has a function of protecting the solar cell element 12 and the like from the back surface side. Such a back surface protection member 14 is bonded to the filler 13 located on the back surface side of the solar cell panel 10. As such a back surface protection member 14, for example, PVF (polyvinyl fluoride), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), or a laminate obtained by appropriately selecting these can be used.

  In addition, the back surface protection member 14 is not restricted to the colored thing, You may use glass or a transparent resin material. By using the transparent back surface protection member 14, incident light between the adjacent solar cell elements 12 can be transmitted to the back surface 10 b side of the solar cell panel 10. Thereby, the incident light to places other than the solar cell element 12 can be transmitted to the installation surface P and used for growing crops.

  Further, a frame 15 is attached to the outer periphery of the solar cell panel 10. The frame 15 has a function of improving the load resistance of the solar cell module 4 and protecting it from impact. As such a frame 15, for example, a material obtained by extruding a metal such as an aluminum alloy can be used.

<Effect>
According to the solar cell device 1 of the present embodiment, the following effects are obtained.

  The sub pile member 23 constituting the foundation structure 2 is inclined with respect to the main pile member 20 in the upright state, and can be reliably driven obliquely into the installation surface P. The foundation structure 2 provided with such a sub pile member 23 is unlikely to settle due to a load such as a snow load, and the sub pile member 23 is difficult to be pulled out due to a negative wind load. Fixing strength to P can be increased.

  Moreover, the 1st tubular member 22 which comprises the foundation structure 2 is attached to the 1st base 21 with the 1st screw member 22d which has a shaft part. And if the 1st screw member 22d is loosened, the 1st tubular member 22 will be rotated and the normal line direction H shown in FIG. 5 can be turned to a predetermined direction. Thereby, the inclination-angle of the subpile member 23 which penetrates the pipe part 22e can be adjusted. For this reason, the sub-pile member 23 can be disposed by reducing the inclination angle with respect to the main pile member 20 and avoiding the range of deep plowing work with agricultural machinery. Moreover, in the range which does not perform deep plowing work, the inclination angle with respect to the main pile member 20 of the subpile member 23 can be enlarged, and the fixed strength to the installation surface P of the foundation structure 2 can be raised. Moreover, since it is the structure which can rotate and adjust the direction of the 1st tubular member 22 steplessly, the inclination-angle of the subpile member 23 can be set to the range of the limit which does not work deep plowing.

  As shown in FIG. 3, the pair of the first sub pile member 23A and the second sub pile member 23B and the pair of the third sub pile member 23C and the fourth sub pile member 23D are in different directions. Has been placed. Thereby, a role can be divided into a pair on the side that avoids the working area of deep plowing and a pair on the side that increases the inclination angle of the auxiliary pile member 23 to increase the fixing strength. For this reason, the fixing strength to the installation surface P of the foundation structure 2 can be increased while reducing the obstacles to the production of agricultural products. In particular, when the other pair of sub-pile members 23 is arranged in a direction orthogonal to the arrangement direction of the one pair of sub-pile members 23, different pairs of sub-pile members are orthogonal to each other. It can be set as the foundation structure 2 which can be supported efficiently even if a load is added from which direction because it extends in. Moreover, by having the main pile member 20, the main pile member 20 can be driven first, and the 1st base 21, the 1st tubular member 22, and the subpile member 23 can be fixed in order, supporting by the main pile member 20. For this reason, the workability of the solar cell device 1 can be improved.

<< Second Embodiment >>
As shown in FIG. 7, in the solar cell device of the second embodiment, in the first base portion 21 constituting the foundation structure 2, the first flange portion 21 a formed by bending a plate-like body is replaced with an L-shape. It differs from 1st Embodiment by the point which attached the plate-shaped body of the type | mold to the overhang | projection part 21g separately from the overhang | projection part 21g.

  Specifically, the first flange portion 21a of the present embodiment is formed by bending a steel plate into an L-shape and providing holes for inserting screw members in each of the two surfaces 21aa and 21ab having different surface directions. Yes. The first flange portion 21 a is fixed by screwing using a third screw member 24 having a shaft portion on the protruding portion 21 g of the first base portion 21. Moreover, the 1st flange part 21a can adjust the driving direction of the sub pile member 23 toward the installation surface P with high precision by loosening the 3rd screw member 24 and rotating it along XY plane.

  Since the first base portion 21 includes the first flange portion 21a described above, the first tubular member 22 rotates in a direction parallel to the surface 21aa of the first flange portion 21a and a direction parallel to the main surface of the overhang portion 21g. It can move and can adjust the driving direction of sub pile member 23 freely and accurately rather than a 1st embodiment. Thereby, the fixing strength to the installation surface P of the foundation structure 2 can be further increased while avoiding the deep plowing area of the agricultural machine more easily.

<< Third Embodiment >>
As shown in FIG. 8, the solar cell device of the third embodiment includes a second base 25 and a second base 25 that are disposed below the first base 21 (on the other end side of the main pile member 20). In the first embodiment and the second embodiment, a second tubular member 26 that inserts a part of the sub-pile member 23 below the first tubular member 22 and holds the second tubular member 26 is provided. This is different from the second embodiment.

Specifically, the second base portion 25 has the same shape as the first base portion 21, and is disposed on the main pile member 20 with the first base portion 21 turned upside down. The second base portion 25 is a cross-shaped plate material in plan view from the Z-axis direction. The second base portion 25 has an overhang portion 25b that protrudes from the center portion 25a in both the X-axis direction and the Y-axis direction. In addition, the second base portion 25 has a third flange portion 25c that stands in the Z-axis direction with respect to each overhang portion 25b. Each third flange portion 25c is provided with a fourth hole portion 25d. Further, a fifth hole portion 25 e through which the main pile member 20 is inserted is provided in the central portion 25 a of the second base portion 25. A fourth flange portion 25f is provided on the periphery of the fifth hole portion 25e. The second base portion 25 is inserted through the fifth hole portion 25e below the first base portion 21, and the fourth flange portion 25f is fixed to the main pile member 20 by screws.

  The second tubular member 26 has the same shape as the first tubular member 26, and has a fourth screw member 26a corresponding to the first screw member 22d. The fourth screw member 26 a of the second tubular member 26 is fixed to a fourth hole portion 25 d provided in each third flange portion 25 c of the second base portion 25. The second tubular member 26 can be rotated and adjusted in an arbitrary direction with the fourth screw member 26a loosened, and can be fixed to the second base 25 with the fourth screw member 26a tightened. it can.

  By having such a second base 25, the inclination angle of the secondary pile member 23 with respect to the main pile member 21 can be easily adjusted by adjusting the distance between the first base 21 and the second base 25. Can do. More specifically, by reducing the distance between the first base portion 21 and the second base portion 25, the inclination angle of the sub-pile member with respect to the main pile member 20 can be increased. Further, by increasing the distance between the first base portion 21 and the second base portion 25, the inclination angle of the sub-pile member with respect to the main pile member 20 can be reduced.

  By holding the sub-pile member 23 with the first tubular member 22 and the second tubular member 26, the strength of the foundation structure 2 can be increased. Moreover, by adjusting the space | interval of the 1st base 21 and the 2nd base 25, the inclination angle of the subpile member 23 can be adjusted easily and the workability of the foundation structure 2 can be made further favorable.

  In the above-described embodiment, the solar cell device 1 (solar cell module 4) has been described as being disposed on the horizontal installation surface P in order to facilitate understanding of the description, but the present invention is not limited to this. For example, the present invention can be suitably applied even when the solar cell device 1 is installed on an inclined ground.

  Moreover, the structure of the solar cell apparatus 1 is not restricted to said embodiment, You may change a detail suitably. For example, an L-type or H-type steel material may be used as the main pile member and the sub-pile member, and electricity between the solar cell module 4 and the foundation structure 2 is provided by a conductor such as a column member 31 or a ground wire. May be connected to each other and the solar cell module 4 may be grounded.

DESCRIPTION OF SYMBOLS 1: Solar cell apparatus 2: Foundation structure 3: Base 4: Solar cell module 10: Solar cell panel 10a: Light-receiving surface 10b: Back surface 11: Translucent substrate 12: Solar cell element 13: Filler 14: Back surface protection member 15: Frame 16: Wiring material 20: Main pile member 21: First base portion 21a: First flange portion
21b: 1st hole part 21c: 2nd hole part 21d: 2nd flange part 21e: 3rd hole part 21f: Center part 21g: Overhang part 22: 1st tubular member 22a: Main-body part 22b: Hinge part 22c: Grip Part 22d: First screw member 22e: Pipe part 22f: Plate part 22g: Second screw member 23: Sub pile member 23A: First sub pile member 23B: Second sub pile member 23C: Third sub pile member 23D: First 4 sub-pile member 24: 3rd screw member 25: 2nd base 25a: center part 25b: overhang part 25c: 3rd flange part 25d: 4th hole part 25e: 5th hole part 25f: 4th flange part 26: Second tubular member 26a: Fourth screw member 31: Column member 32: Beam member 33: Girder member 33a: Metal fitting P: Installation surface (ground)

Claims (4)

A solar cell device comprising: a foundation structure disposed on an installation surface; a gantry disposed on the foundation structure; and a solar cell module disposed on the gantry,
The foundation structure is a main pile member in which the gantry is disposed on one end side and the other end side is provided upright with respect to the installation surface,
A first base fixed to the one end side of the main pile member;
A first tubular member having a tube portion provided rotatably with respect to the first base portion;
A solar cell device, comprising: a sub-pile member provided to be inclined with respect to an upright direction of the main pile member in a state where a part of the first tubular member is inserted into the pipe portion.   The foundation structure has two pairs of sub-pile members, and when the one end side of the main pile member is viewed in plan, each pair of sub-pile members is arranged along different directions. The solar cell device according to claim 1.   When the said one end part side of the said main pile member is planarly viewed, one pair of said sub pile members and the other pair of said sub pile members are arrange | positioned so that it may orthogonally cross. The solar cell device described. The foundation structure includes a second base portion fixed to the other end side of the main pile member on the other end side, and a pipe portion provided to be rotatable with respect to the second base portion. A second tubular member,
The solar cell device according to any one of claims 1 to 3, wherein a part of the sub-pile member is inserted into the pipe portion of the second tubular member.

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