JP2013175520A - Photovoltaic generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic generation device which supplies sufficient luminous power to crops planted at the whole area of a crop land to grow and harvest the crops and significantly increases an occupied area ratio of a solar cell panel above the crop land thereby achieving a large power generation amount.SOLUTION: A photovoltaic generation device includes: a frame 1 formed by erecting multiple pillars 11 at a crop land 9 and connecting upper end parts 111 with a beam 15; multiple receivers 2 fastened to the frame 1; multiple solar cell panels 3 attached to the receivers 2 so that their light receiving surface 3a are inclined while being placed at the upper side and each light receiving surface 3a is separated from a line of the light receiving surfaces 3a adjacently placed; and reflection plates 4 attached to a rear surface 3b of the solar cell panel 3 or attached to the receivers 2 at the rear surface 3b side of the solar cell panel. At least a part of solar light entering each reflection plate 4 reflects and heads to the crop land 9 positioned below.

Description

  The present invention relates to a solar power generation apparatus installed on a cultivated land such as a field.

Photovoltaic power generation is a power generation method that converts solar energy into electric power. Usually, a solar cell panel (also referred to as a solar cell module or a solar panel) in which a number of solar cells are arranged and interconnected to form a panel is used.
Conventionally, many solar cell panels have been installed on the roofs and walls of buildings. In addition, there has also been a photovoltaic power generation apparatus in which solar cells are widely spread without interruption in order to utilize a fallow land and obtain high output. However, the height at which the solar cell panel is installed is less than 1 m at most in the solar power generation device, and it was impossible to use the farmland under the solar cell panel as cultivated land.
Under such circumstances, a solar power generation facility that aims to achieve both agriculture and solar power generation has been proposed (for example, Patent Document 1).

JP 2011-129852 A

However, as disclosed in the patent document 1, “Patent 3 having a narrow east-west width C is elongated in the north-south direction” and “a large space B is secured on the back side of the array 3 up and down to the ground surface. The invention was limited to the invention that proposed the "structure".
In Patent Document 1, the shade created by the array is made, and as shown in FIG. 1, the mounting area of the array is small with respect to the entire area of the farmland to be applied. In order to give a sufficient amount of light to the crops on the farmland, the area occupied by the array had to be reduced. Therefore, it was difficult to get a high output. Furthermore, in order to use it as a cultivated land, measures for introducing agricultural machinery such as a field cultivator have not been considered, and there is only a technique of manually cultivating, and it was difficult to operate agriculture.

  The present invention solves the above-mentioned problem, supplies a sufficient amount of light to a crop planted in almost the entire area of the cultivated land, enables growth and harvesting, and greatly increases the area ratio of the solar cell panel above the cultivated land. An object of the present invention is to provide a solar power generation device that can increase the amount of power generation to a greater level.

In order to achieve the above object, the gist of the invention described in claim 1 is that a plurality of support columns (11) are erected on a cultivated land (9) and their upper end portions (111) are connected by beams (15). A row of light receiving surfaces (3a) that are inclined with the light receiving surface (3a) on the upper side and are arranged next to the support (2) that is fixed to the frame (1). A plurality of solar cell panels (3) that are mounted apart from each other, and are attached to the back surface (3b) of the solar cell panel (3), or on the back surface (3b) side of the solar cell panel (3). A reflector (4) attached to the receiver (2), and at least a part of the sunlight incident on the reflector (4) is reflected toward the lower cultivated land (9) It is in the photovoltaic power generation device characterized by doing.
A solar power generation device according to a second aspect of the present invention is the solar power generation device according to the first aspect, wherein the reflector (4) is a mirror-finished metal plate, and the reflector (4) is the back surface (3b) of the solar cell panel (3). It is attached to. The photovoltaic power generator according to claim 3 is the solar power generation device according to claim 1 or 2, wherein the height (H2) from the ground (GL) of the cultivated land (9) to the lower edge (151) of the beam (15) is 3 m. The height (H1) from the ground (GL) of the cultivated land (9) to the upper edge (30) of the solar cell panel (3) and the ground (GL) of the cultivated land (9). The height (H0) to the upper edge (20) of the tool (2) is set to a height range of 4 m or less. A photovoltaic power generation apparatus according to a fourth aspect of the present invention is the solar power generation device according to the first to third aspects, wherein the concrete base block (13) is integrally fixed to the lower end portion (112) of the column (11), and the foundation is formed from the ground (GL). The depth (h) to the upper surface (131) of the block (13) is 400 mm or more.

When the solar cell panel is fixed to each support on the pedestal, tilted with the light receiving surface facing upward and separated from the adjacent light receiving surface column, the space between the columns formed by the solar cell panel Since a band-shaped opening is formed, sunlight is inserted through the band-shaped opening even in cultivated land where part of the sunlight is blocked by the solar cell panel. And it is attached to the back surface of the solar cell panel, or comprises a reflector that is attached to the support on the back surface side of the solar cell panel, and the sunlight incident on the reflector is reflected downward If it goes to a cultivated land, since the light quantity of the sunlight which the solar cell panel blocked can be sent through this reflector, the crop planted in the cultivated land is fully grown. As a result, the solar cell panels can be arranged on the gantry with high density, and a high power generation amount can be obtained.
If the reflector plate is a mirror-finished metal plate as in the second aspect of the invention, unlike a mirror made of a glass plate or the like, there is no possibility of cracking, and the handling and safety are excellent. Furthermore, when the reflector is attached to the back surface of the solar cell panel, the reflector is attached to and integrated with the solar cell panel. Contributes to improved workability when assembling equipment.
As in the invention of claim 3, when the height from the ground of the cultivated land to the lower edge of the beam is 3 m or more, an agricultural machine such as a cultivator to the cultivated land can be used as a gantry even if a solar power generation device exists. Free access to the farmland below. If the height from the ground of the cultivated land to the upper edge of the solar cell panel and the height from the ground of the cultivated land to the upper edge of the receiver are set within a height range of 4 m or less, the Construction Business Law You can escape the application of the installation.
As in the invention of claim 4, when the foundation block is integrally fixed to the lower end portion of the support column and the depth from the ground to the upper surface of the foundation block is 400 mm or more, the claws such as a cultivator do not reach the foundation block. There is no hindrance to farming. Agricultural work that is completely the same as before is possible.

  The solar power generation device of the present invention can obtain high output power by increasing the area occupied by the solar panel above the cultivated land, while the cultivated land below the solar panel is cultivated in a state that is not different from the conventional one. It can be used as land and farmland, and natural energy can be used as electric power without incurring land cost, and from the standpoint of the cultivated land owner, power generation income will be added to the agricultural income associated with cultivation, etc. It has a great effect.

It is one form of the solar power generation device of this invention, and is the schematic right view. FIG. 2 is an enlarged cross-sectional view of the main part of FIG. FIG. 2 is a schematic plan view of FIG. 1. It is a schematic side view showing that the incident light to a reflecting plate reaches | attains the cultivated land below a solar cell panel. It is a principal part expanded sectional view of the other aspect replaced with FIG. FIG. 5 is a schematic side view of another embodiment instead of FIG. 4.

  Hereinafter, the solar power generation device according to the present invention will be described in detail. 1 to 6 show one embodiment of the photovoltaic power generation apparatus of the present invention, FIG. 1 is a schematic side view thereof, FIG. 2 is a partially enlarged sectional view of FIG. 1, FIG. 3 is a schematic plan view of FIG. 5 is a schematic side view showing that the incident light on the reflector reaches the cultivated land below the solar cell panel, FIG. 5 is another embodiment diagram instead of FIG. 2, and FIG. 6 is another embodiment diagram replacing FIG. In each drawing, the thickness of the reflecting plate 4 is drawn thick for easy understanding of the drawing, and the support member 26 and the receiving portion 27 are not shown in FIGS.

The solar power generation device includes a gantry 1, a receiver 2, a solar cell panel 3, and a reflection plate 4 (FIG. 1). The gantry 1 is a metal rod-like body in which a plurality of support columns 11 are erected on the cultivated land 9 and their upper end portions 111 are connected to each other by a beam 15. Here, main struts 11a having the same height are erected at four corners of the rectangular cultivated land 9 (FIG. 3). Further, three sub struts 11b having the same height as the main strut 11a are erected at a predetermined pitch between the main struts 11a viewed from the front side, and two are erected at a predetermined pitch between the main struts 11a viewed from the side surface side. . Between each support | pillar 11, the space | interval which can perform the cultivation operation | work with agricultural machines, such as a cultivator, smoothly is ensured.
And the main beam 15a connects between each main support | pillar 11a so that the upper end part 111 of the main support | pillar 11a provided in the four-way four corners may surround, and the planar view square frame is formed with the upper end part 111 of the main support | pillar 11a. In the square frame, three vertical beams 15b extending from the lower main beam 15a in FIG. 3 to the upper main beam 15a are arranged so as to divide the horizontal length of the square frame into four parts, and on the left side of the page. Two horizontal beams 15c extending from the main beam 15a to the right main beam 15a are arranged to divide the vertical length of the square frame into three. The horizontal beam 15c is shown by a chain line for easy understanding of the drawing. A vertical beam 15b and a horizontal beam 15c are arranged in the square frame, and a sub-column 11b is erected at the intersection of these beams. A frame 1 is formed by forming a hollow hexahedron as shown in FIGS. 1 and 3 on a cultivated land 9.
Specifically, in the plan view of FIG. 3, a square frame having a horizontal length of about 36 m and a vertical length of about 27 m is formed by the main beam 15a, and is divided into 12 squares (one side is about 9 m) by the vertical beam 15b and the horizontal beam 15c. It is a lattice frame. As described above, the three vertical beams 15b are arranged from the lower main beam 15a in FIG. 3 to the upper main beam 15a. Further, between these vertical beams 15b and 15b, Two auxiliary beams (not shown) are arranged in parallel so as to be divided into three parts between the vertical beam 15b and the main beam 15a. The auxiliary beam has the same shape as the main beam 15a, the vertical beam 15b, and the horizontal beam 15c. Therefore, on the gantry 1 in FIG. 3, the distance between the beams 15 in the left-right direction of the drawing is about 3 m. This beam interval is substantially equal to the lateral length of the solar cell panel 3 of about 3 m.

A concrete foundation block 13 is integrally fixed to each column 11 from the viewpoint of securing strength and preventing rust. The base block 13 has a height of about 500 mm and a diameter of about 600 mmφ, for example, and a depth h from the ground surface GL to the upper surface 131 of the base block 13 is set to 400 mm or more (FIG. 4). This is to prevent the claw such as a cultivator that digs up the soil in the cultivated land 9 from coming into contact with the foundation block 13.
Further, the gantry 1 is assembled so that the height H2 from the ground GL of the cultivated land 9 to the lower edge 151 of the beam 15 is 3 m or more. This is because an agricultural machine such as a cultivator can freely enter and exit under the gantry 1.

The receiving device 2 is a support means for the solar cell panel 3 that is inclined to the receiving surface 27 a and is spaced apart from the receiving surface 27 a disposed adjacently on the gantry 1 to be fixed to the gantry 1.
The receiving device 2 of the present embodiment includes a large leg portion 22, a small leg portion 23, a holding member 25, a support member 26, and a receiving portion 27. The large leg portion 22 and the small leg portion 23 are separated from each other by a small distance in the vertical direction on each beam 15 in FIG. 3 so that the holding member 25 can be supported from below as shown in FIG. The leg portion 22 and the small leg portion 23 are fixed upright on the beam 15. The main beam 15a, the vertical beam 15b, the horizontal beam 15c, and the auxiliary beam, which are arranged at a pitch of 3 m, are erected and fixed. A square frame holding member 25 made of a square tube is placed and fixed on the upper ends of the large leg portion 22 and the small leg portion 23. The holding member 25 is an elongated rectangular frame that is long in the direction perpendicular to the paper surface of FIG. 2, and has a total length from the right main beam 15a to the left main beam 15a in FIG. The holding member 25 is appropriately provided with a reinforcing member 252 for connecting the upper holding portion and the lower holding portion at an intermediate portion in the longitudinal direction. The holding member 25 is placed and fixed to the large leg portion 22 and the small leg portion 23 via the base plate 21 on the beams 15 such as the main beams 15a, the vertical beams 15b, the horizontal beams 15c, and the auxiliary beams. The large leg portion 22 is higher than the small leg portion 23, and the holding member 25 is attached to be inclined. For example, the holding member 25 as shown in FIG. 2 is installed at an inclination angle of 30 ° with respect to the horizontal plane in a side view. A large leg portion 22 and a small leg portion 23 form a pair, and a large number of them are installed on the beam 15, and a plurality of holding members 25 arranged to be inclined are provided apart from the holding members 25 arranged next to each other. Referring to FIG. 3, the other horizontally long holding member 25 is provided with a strip-shaped opening S, and another holding member 25 arranged in one step (or one step below) in parallel. As a result, an opening S is provided between each holding member 25 (receiver 2) and the holding member 25 (receiver 2) on the gantry 1 so that sunlight can be inserted into the cultivated land 9 below the gantry 1.
The holding members 25 (receivers 2) here are arranged in 15 rows on the gantry 1 as shown in FIG. 3, taking a band-like opening width L of about 1 m from the adjacent holding member 25 (receiver 2).

A support member 26 made of L-shaped steel is screwed and fixed onto the holding member 25 (FIG. 2). The support member 26 forming the square frame has an upright portion 261 with an L-shaped cross section of L-shaped steel standing upright on the holding member 25 and a horizontal portion 262 with an L-shaped cross section is held from the lower edge of the upright portion 261. It extends inward of the member 25.
A pair of receiving portions 27 having an L-shaped cross section are placed and fixed in the frame of the support member 26 so as to overlap the inner surface of the support member 26 inside the L-shaped steel of the support member 26. The receiving portion 27 has an elongated bar shape, an equal cross-sectional shape having an L-shaped cross section in the longitudinal direction, and has an overall length substantially the same as that of the cross beam 15c. A vertical portion 271 having an L-shaped cross section related to the receiving portion 27 rises in an inclined state with respect to the horizontal portion 262 of the support member 26, and a horizontal portion 272 having an L-shaped cross section from the base end of the vertical portion 271 has a solar cell on the upper surface side. A receiving surface 27 a of the panel 3 is formed and extends toward the paired counterpart receiving portion 27. The receiving surface 27 a is inclined so as to match the inclination angle of the holding member 25. Reference numeral 29 denotes an elastic member made of rubber or the like interposed between the support frame and the receiving portion 27. The transmission of external impact such as an earthquake to the solar cell panel 3 placed on the receiving portion 27 is alleviated. The pair of receiving portions 27 can be a single-piece receiving frame in which these are incorporated. Further, for example, a receiving frame having such a size that the solar cell panel 3 can be fitted may be used, and the solar cell panels 3 may be fitted into the receiving frame one by one so as to be in contact with and set on the receiving surface 27a.

The solar battery panel 3 is a publicly known product that can receive power from the sun and generate electric power, and houses a plurality of solar battery cells and has a panel shape. A solar cell is a stack of P-type and N-type semiconductors with different properties. When sunlight 7 hits them, electrons and holes are generated, holes are transferred to the P-type semiconductor side, and electrons are N-type. It is attracted to the semiconductor side, current flows, and electric output can be taken out. Since the amount of power generated by one solar battery cell is small, the solar battery panel 3 in which a plurality of solar battery cells are connected in series or in parallel to obtain necessary power according to the purpose of use is formed as a unit unit. The solar cell panel 3 here is a rectangular plate having a size of less than 1 m in length and about 3 m in width.
The solar cell panel 3 has no movable part in the power generation part and does not cause a mechanical failure or the like. In addition, it does not generate waste, hot drainage, noise, vibration, exhaust, etc. during power generation, making it an excellent power generator from the viewpoint of environmental protection.

The solar cell panel 3 is attached to the receiver 2 by inclining with the light receiving surface 3 a facing upward and being spaced apart from the row of the light receiving surfaces 3 a disposed adjacent to the solar cell panel 3, contacting and setting the receiving surface 27 a. The solar cell panel 3 having the light receiving surface 3a facing southward on one receiver 2 is arranged in a row in the horizontal direction of the paper surface in FIG. The solar cell panel 3 is set in contact with the receiving surface 27a and attached to the receiving device 2 so that the inclination according to the region is set in the side view of FIG. The A receiver 2 composed of a support member 26, a receiving portion 27, etc. is arranged at a predetermined pitch apart from the adjacent receiving device 2, and a row of the light receiving surfaces 3a of the solar cell panels 3 placed on one receiving portion 27 In addition, the solar cell panel 3 is fixed to the support 2 so as to be separated from the row of the light receiving surfaces 3 a of the solar cell panel 3 placed on the adjacent receiving portion 27.
Here, a solar cell array of 12 solar cell panels 3 connected in a row is mounted and fixed on each support 2 in 15 rows. The solar cell arrays with the respective receivers 2 are arranged on the gantry 1 in a band shape with a predetermined interval L (FIG. 3). In addition, the output of the solar cell panel 3 is taken out via a power conditioner (not shown).

  The width of each inclined solar cell array, more precisely the width W of each holding member 25 that receives the solar cell array together with the solar cell array forms a shade below the gantry 1, but the width W is set to about 1 m. The interval between the solar cell arrays where the sunlight enters the lower part of the gantry 1, more precisely, the interval L between the solar cell arrays with the support 2 is also set to about 1 m. The solar light intakes created by the interval L form a band-shaped opening S on the upper surface of the gantry 1, and 15 are provided in FIG. 3 in plan view.

The reflector 4 is a mirror member that is attached to the back surface 3 b of the solar cell panel 3 and has approximately the same size as the solar cell panel 3. The reflector 4 is preferably a mirror-finished metal plate, and this embodiment also employs it. This is because the surface hardness is high, it is inexpensive and excellent in durability, and can be used outdoors permanently. In addition, it is safer and harder to be broken by an impact than the reflector 4 made of a glass mirror. Here, a stainless steel plate having a thickness of about 0.8 mm is used for the reflecting plate 4.
The reflecting plate 4 is coated with an adhesive on the back surface opposite to the mirror-finished mirror surface and adhered to the back surface 3b of each solar cell panel 3. Further, the outer peripheral edge of the reflecting plate 4 is attached with a tape, It is integrally attached to the battery panel back surface 3b. As the reflector 4 and the solar cell panel 3 are integrated, the assembly, handling, management and the like of the solar power generation apparatus proceed smoothly. As the adhesive, for example, a silicone resin adhesive having excellent heat resistance and durability is used.
Thus, at least a part of the sunlight 7 incident on the reflecting plate 4 is reflected by the reflecting surface 4a and is directed to the cultivated land 9 below. The sunlight 7 passes through the belt-like opening S of the gantry 1 and reaches the cultivated land 9 below. Furthermore, the sunlight 7 blocked by the solar cell panel 3 is reflected by the light receiving surface 3a as shown in FIG. 4, for example, and becomes incident light 72 to the reflecting plate 4, and the reflected light 74 reflected by the reflecting plate 4 is The cultivated land 9 below the gantry 1 is reached. By adding the reflected light to the cultivated land 9 by the reflecting plate 4, the amount of sunlight 7 blocked by the solar cell panel 3 is supplemented. Reference numerals 81 and 83 indicate normal lines.

  The sun's sunshine entering the cultivated land 9 under the gantry 1 through the belt-shaped opening S varies depending on the season, for example, from March to September, as shown in FIG. And move from June to September to the cultivation zone shown in March. And the sunlight of the sun which hits the light-receiving surface 3a is reflected by the light-receiving surface 3a and reflected to the reflecting plate 4, and then reflected by the reflecting plate 4 to the cultivated land 9 under the gantry 1. The reflected light 74 reaches. Reflected light 74 from the reflector 4 is further added to the sunlight 7 from the band-shaped opening S, so that light useful for the growth of crops planted on the cultivated land 9 can be sufficiently delivered.

  The solar power generation apparatus also has a height H1 from the ground GL of the cultivated land 9 to the upper edge 30 of the solar cell panel 3, and a height H0 from the ground GL of the cultivated land 9 to the upper edge 20 of the receiver 2. Is set to a height range of 4 m or less. Since the height H1 from the ground GL to the upper edge 30 of the solar cell panel 3 is higher than the height H0 from the ground GL to the upper edge 20 of the receiver 2, the height H1 is set to 4 m or less, and the sun The entire photovoltaic power generation apparatus is 4 m or less. This is to avoid this restriction because the construction industry law is an installation if it exceeds 4m.

  FIGS. 5 and 6 show another embodiment of the solar power generation apparatus that replaces FIGS. Here, instead of attaching the reflecting plate 4 to the back surface 3 b of the solar cell panel 3 in FIGS. 1 to 4, the reflecting plate 4 is attached to the support 2 on the back surface 3 b side of the solar cell panel 3. The reflection plate 4 is attached to the inclined lower surface 251 of the holding member 25 according to the receiver 2 at the same angle as the inclination angle of the solar cell panel 3. A reflector 4 as shown in FIG. 5 having a slightly larger width than the reflector 4 attached to the solar cell panel 3 is installed in the direction perpendicular to the paper surface of FIG. The length of the reflecting plate 4 in the direction perpendicular to the paper surface is about 3 m, and is attached to the holding member 25 directly below the solar cell panel 3 so as to correspond to each solar cell panel 3. As in FIG. 4, the sunlight 7 hitting the light receiving surface 3 a is partially or mostly reflected by the light receiving surface 3 a toward the reflecting plate 4 and further reflected by the reflecting plate 4. The incident light (reflected light 74) reaches the cultivated land 9 under the gantry 1 and can sufficiently deliver light useful for the growth of the crop planted on the cultivated land 9. The other structure is the same as that of the solar power generation device of FIGS.

The solar power generation device configured as described above directly takes sunlight 7 into the cultivated land 9 below the gantry 1 by tilting the light receiving surface 3a upward and separating the light receiving surface 3a from the adjacent row of the light receiving surfaces 3a. The band-shaped opening S is not limited to being formed on the gantry upper surface 1a. By attaching the reflecting plate 4 to the back surface 3b of the solar cell panel that is inclined, the reflected light 72 reflected by the light receiving surface 3a is reflected by the reflecting plate 4 of the adjacent solar cell panel 3, and the light 74 is reflected on the gantry 1 Since it is directed to the lower cultivated land 9, a sufficient amount of light can be supplied to the crop planted in the entire area of the cultivated land under the gantry 1. Having a plurality of solar cell arrays in which the light receiving surface 3a of the solar cell panel 3 is inclinedly arranged on the gantry 1 and arranged in a row, the strip openings S are provided between the plurality of solar cell arrays, The fact that the reflector 4 is attached to the back surface 3b of each solar cell panel is organically coupled, so that the sunlight 7 hitting the solar cell panel 3 is reflected by the reflector 4 and is cultivated below the gantry 1 Head to. If the reflecting plate 4 is used, the solar cell panel 3 is inclined, and further separated from the adjacent solar cell array column by the minimum strip-shaped opening S, and the path of sunlight 7 from the light receiving surface 3a to the reflecting plate 4 The sunlight 7 reaches the cultivated land 9 with certainty. Moreover, by providing the strip-shaped opening S and the solar cell panel 3 being inclined, natural forces such as rain and wind are also provided to the cultivated land 9 below the gantry 1.
Therefore, it is not necessary to increase the distance between the gantry as in the prior art 1, and it is possible to grow and harvest the crop, while increasing the exclusive area ratio of the solar panel 3 above the cultivated land 9 and increasing the The amount of power generation can be increased by arranging the solar cell panel 3. Compared with Patent Document 1, the amount of power generation is greatly increased, and crops can be grown on the cultivated land 9 below the solar battery panel 3 in the same state as before.

And by making the height H2 from the ground GL of the cultivated land 9 to the lower edge 151 of the beam 15 3 m or more, agricultural machines such as cultivators, tractors and the like can be applied to the cultivated land 9 under the gantry 1 as before. You can enter and exit freely. Sufficient agricultural work space is secured. In addition, by setting the depth h from the ground GL to the upper surface 131 of the foundation block 13 to be 400 mm or more, it is possible to avoid contact with the claws of the cultivator, and there is no hindrance to the cultivation on the cultivated land 9. . While continuing cultivation, both solar power generation and power generation can be achieved.
In addition, land cost is a problem when introducing solar power, but in the case of agricultural land, if cultivation can be continued, it can be introduced at virtually zero land cost. Utilizing natural energy leads to an increase in farmers' income and is extremely beneficial.

  Furthermore, regarding the cultivated land 9, there are restrictions due to regulations such as the Agricultural Land Law and the Construction Industry Law, but these can be solved. The height H2 from the ground GL of the cultivated land 9 to the lower edge 151 of the beam 15 is set to 3 m or more, and sufficient sunlight 7 is taken into the cultivated land 9 below the gantry 1 as described above to grow a crop on the cultivated land 9 Since agriculture is established, the application of the Agricultural Land Law can be continued as it is. Further, the height H1 from the ground GL of the cultivated land 9 to the upper edge 30 of the solar cell panel 3 and the height H0 from the ground GL of the cultivated land 9 to the upper edge 20 of the receiving device 2 are 4 m or less. Since it is set in the height range, it is possible to avoid the application of the construction industry law installation.

More specifically, the beam 15 is made as high as 3 m or more, and a band-shaped opening S is provided on the top surface 1a of the base to improve ventilation, and the solar cell panel 3 is inclined to increase the resistance of the base 1 against natural winds. It is useful to raise.
As described above, the photovoltaic power generation apparatus of the present invention disposed on the cultivated land 9 effectively converts solar energy into electric power by increasing the installation area of the solar battery panel 3, thereby preventing global warming and reducing CO _2. As there is no fundamental change in the cultivated land 9 by growing the crops under the solar panel 3 and the gantry 1, there is little deterioration of the farmland and the impact on the natural environment such as flood control It has a great effect, such as no effect.

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, material, and the like of the gantry 1, the receiver 2, the solar cell panel 3, the reflector 4, and the cultivated land 9 can be appropriately selected according to the application.

DESCRIPTION OF SYMBOLS 1 Mount 11 Support | pillar 111 Upper end of support | pillar 13 Foundation block 131 Upper surface of foundation block 15 Beam 151 Bottom edge of beam 2 Receiver 20 Upper edge of receiver 27a Reception surface 3 Solar cell panel 3a Light reception surface 3b Back surface 30 Solar cell panel Edge 4 Reflector 9 Cultivated land h Depth GL Ground H0, H1, H2 Height

Claims (4)

A pedestal (1) in which a plurality of support posts (11) are erected on the cultivated land (9) and their upper ends (111) are connected by beams (15);
A plurality of fixtures (2) fixed on the pedestal (1) are inclined with the light receiving surface (3a) on the upper side and spaced apart from a row of light receiving surfaces (3a) arranged next to each other. Solar panel (3),
Reflector (4) attached to the back surface (3b) of the solar cell panel (3) or attached to the support (2) on the back surface (3b) side of the solar cell panel (3) And comprising
A solar power generation device characterized in that at least a part of sunlight incident on the reflector (4) is reflected and directed toward a cultivated land (9) below. The solar power generation device according to claim 1, wherein the reflector (4) is a mirror-finished metal plate, and the reflector (4) is attached to the back surface (3b) of the solar cell panel (3). The height (H2) from the ground (GL) of the cultivated land (9) to the lower edge (151) of the beam (15) is 3 m or more, and the solar cell panel from the ground (GL) of the cultivated land (9) (3) The height (H1) to the upper edge (30) and the height (H0) from the ground (GL) of the cultivated land (9) to the upper edge (20) of the receiver (2), The solar power generation device of Claim 1 or 2 set to the height range of 4 m or less. A concrete foundation block (13) is integrally fixed to the lower end (112) of the support (11), and a depth (h) from the ground (GL) to the upper surface (131) of the foundation block (13) is 400 mm. The solar power generation device according to any one of claims 1 to 3, which is as described above.

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