JP2013124449A - Foundation for solar panel and solar panel unit using foundation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foundation for a solar panel capable of facing lift force due to wind, etc., simultaneously obtaining strength against snow loads or seismic loads, and suppressing temperature rise of the solar panel, and a solar panel unit in which the solar panel is installed by using the foundation for the solar panel.SOLUTION: In a foundation for a solar panel made of concrete, a rising part which supports the solar panel is provided by providing a front wall 3 with low height on the front end side of a rectangular substrate 2, providing a rear wall 4 with high height on the rear end side of the rectangular substrate 2, and providing left and right side walls to be connected with the front and rear walls 3, 4 on the left and right ends of the rectangular substrate 2, and a space part S is formed by using the substrate 2 as the bottom surface inside the rising part by the rising part. A water channel 7 which introduces rainwater flown down by passing through the top of the solar panel and/or water from water supply means into the space part S is provided on the front wall 3 side, and the space part S on the substrate 2 is made into a cooling part of the solar panel.

Description

  The present invention relates to a solar panel foundation that serves as a gantry for installing a solar panel for receiving sunlight and converting the energy into electric power, and a solar panel unit in which the solar panel is installed using the solar panel foundation as a gantry. About.

  Recently, a solar power generation system using a solar panel for receiving sunlight and converting the energy into electric power has attracted attention. The solar panel is installed on the ground or outdoors such as a roof. When installing the solar panel, it is necessary to install the solar panel with an inclined surface having a certain angle with respect to a horizontal plane in order to efficiently obtain sunlight. Various external forces of nature such as wind load, snow load and seismic load act on the solar panels, and in addition to increasing the strength of the solar panel itself against the external forces, against the external forces transmitted from the solar panel A foundation is needed to obtain the necessary strength as a pedestal to hold safely. In addition, it is necessary to promptly handle the rain that has occurred on the solar panel.

  Furthermore, the currently mainstream solar panels use crystalline silicon solar cells, and the solar cells have a problem that the power generation efficiency decreases as the temperature rises. For example, in summer when the amount of solar radiation is large, the surface temperature of the solar cell is 50 ° C. to 60 ° C., and in this case, the phenomenon that the power generation amount is reduced by 10% or more has occurred.

  As a foundation for a conventional solar panel stand, as shown in Patent Documents 1 and 2 shown in FIGS. 11 and 11, a concrete block A formed in advance is arranged in the field, and a frame material B is assembled and fixed thereon. And, as a support of the solar panel C, and configured to transmit the weight and external force from the solar panel C to the foundation of the concrete block A through the frame material B, as in Patent Document 3 shown in FIG. There is a construction in which concrete D is placed on site, and a pillar E is provided at a proper position so that a lower portion is buried in the concrete D, and a solar panel F is installed thereon.

  Further, as in Patent Document 4 shown in FIG. 14, a water supply tank H is installed on the upper end side of the solar panel G installed obliquely, and the water I flows on the solar panel G by flowing the water I from the water supply tank H. The technology for cooling the solar panel G by the vaporization heat of the supplied water I, as in Patent Document 5 shown in FIG. 15, raises the temperature by flowing a fluid refrigerant into the cooling pipe K on the back side of the solar panel J. A technique for suppressing the solar panel L by providing a container M on the back side of the solar panel L and filling the container M with a fluid as disclosed in Patent Document 6 shown in FIG. Yes.

  As in the above-mentioned Patent Documents 1 and 2, in the case of using an independent concrete block A as a basis and assembling a frame material B on the concrete block A to form a foundation frame of the solar panel C, there is a gap between the solar panel and the lower surface. It is possible to cool the solar panel as a result of the ventilation path, but because the entire assembled structure including the concrete block A is lightweight, the wind that wraps around the solar panel C causes lift and breakage An unstable solar panel support such as moving or moving as a whole will be constructed.

  In order to prevent the lifting due to the lifting force, it is necessary to increase the number of the concrete blocks A used, or to firmly fix the concrete blocks A to the ground on the foundation installation side or the rooftop with anchors or the like. For this reason, anchors and the like are excavated, the ground is excavated, and buildings such as the rooftop floor are damaged, and there has been a situation where waterproofing or the like must be sufficiently performed as necessary.

  In addition, in the case of placing concrete D on site as in Patent Document 3, the number of on-site work increases, and at the same time, the work of embedding a part of the column E in an appropriate place in the concrete D is performed. It is necessary, and the construction accuracy for installing the solar panel F is also required, and it is necessary to spend a lot of time and skilled workers at the site.

  In Patent Documents 4 and 5, it is possible to suppress the temperature rise of the solar panel, but in Patent Document 4, a water supply tank must be installed on the upper end side of the solar panel, In Patent Document 5, a cooling device for cooling had to be provided separately. In Patent Document 6, a solar panel must be attached to a container using an adhesive, a fluid must be supplied into the container, and air cooling means cannot be used together. There were some disadvantages.

JP 11-177114 A JP 2011-911166 A JP-A-8-269972 JP-A-8-195503 JP 2002-208721 A JP 2005-217181 A

  The present invention solves the above-mentioned drawbacks, and makes it possible to oppose the lift due to wind etc. by providing a sufficient weight with moisture on the foundation that becomes the base of the solar panel, and at the same time, the strength against snow load and earthquake load In addition, it is only necessary to install it at a predetermined place without being fixed to the base with an anchor or the like, and the construction at the site becomes extremely simple in addition to the weight reduction of the member at the time of installation. Furthermore, a solar panel foundation that can cope with solar panels of various sizes and that can suppress the temperature rise of the solar panel, and a solar panel in which the solar panel is installed using the solar panel foundation. It relates to the panel unit.

  In the present invention, a rectangular base plate is provided with a low front wall on the front end side, a high rear wall on the rear end side, and left and right walls connected to the front and rear walls on the left and right ends. In a foundation for a solar panel made of concrete in which a rising portion supporting the panel is formed, and a space portion with the inside as the bottom is formed by the rising portion, it flows down on the solar panel to the front wall side. A water channel for introducing rainwater and / or water from the water supply means into the space is provided, and a solar panel foundation having a space on the base plate as a cooling part of the solar panel is characterized.

  In addition, a front wall having a low height is provided on the front end side of the rectangular base plate, and a rear wall having a high height is provided on the rear end side so as to rise from the base plate that supports the solar panel. In the foundation for a concrete solar panel in which a space portion with the base plate as the bottom surface is formed on the inside, rainwater and / or water from the water supply means that has flowed down on the solar panel to the front wall side and the water from the water supply means It is characterized by a solar panel foundation in which a water channel to be introduced into the part is provided and a space part on the base plate is used as a cooling part of the solar panel.

  Furthermore, the base plate, front / rear wall, left / right wall or base plate, front / rear wall are characterized by a solar panel foundation made of lightweight concrete material with high water absorption.

  In addition, a solar panel is provided by providing a front wall with a low height on the front end side of the rectangular base plate, a rear wall with a high height on the rear end side, and left and right walls connected to the front and rear walls on the left and right ends. A rising portion to be supported, and a space portion with the base as a bottom surface is formed by the rising portion, and the rainwater and / or water supply means that has flowed down on the solar panel to the front wall side. A concrete solar panel foundation provided with a water channel for introducing water into the space portion is formed, and a water retention member is laid in the space portion of the solar panel foundation so as to cover an upper portion of the space portion. Furthermore, the solar panel unit is characterized in that a solar panel is laid with an interval above the water retaining member.

  Further, a rectangular base plate is provided with a front wall having a low height on the front end side and a rear wall having a high height on the rear end side so as to support a solar panel. A concrete solar panel in which a space portion is formed with a plate as a bottom surface, and a water channel is provided on the front wall side to introduce rainwater and / or water from the water supply means that has flowed down on the solar panel and into the space portion. The solar panel is formed by forming a foundation for the solar panel, disposing a plate-like water retaining member in the space of the foundation for the solar panel, and further laying a solar panel with a space above the water retaining member. Features a panel unit.

  In addition, a front wall having a low height is provided on the front end side of the rectangular base plate, and a rear wall having a high height is provided on the rear end side so as to rise from the base plate that supports the solar panel. A space portion was formed with the base as the bottom surface inside, and a water channel was provided on the front wall side to introduce rainwater and / or water from the water supply means that flowed down on the solar panel into the space portion. A solar panel unit formed by forming a concrete solar panel foundation, placing a massive water retaining member in the space, and laying a solar panel above the water retaining member with a gap It is characterized by.

  Furthermore, the space | interval of a water retention member and a solar panel is characterized by the solar panel unit formed by arrange | positioning the member with a height between front and back walls, and laying a solar panel on it.

  In addition, the solar panel is laid on the entire surface of the water retaining member with an interval, and the interval communicates with the space on the base plate and / or the water retaining member, and cools from the front wall side to the rear wall side. It features a solar panel unit that serves as an air passage.

  Further, the water retention member is characterized by a solar panel unit formed of a porous material having a water retention property that absorbs and retains the supplied water and diffuses the moisture from the surface.

  Further, the solar panel unit is characterized in that the water-retaining member is formed in a lump shape, placed on a base plate, and provided with a rib-like uneven portion on the surface side.

  Furthermore, the solar panel foundation is made of ordinary concrete material, and the water retention member absorbs and holds the supplied water inside, and the solar panel is formed of a porous material with water retention property that diffuses the moisture from the surface. Features unit.

  The foundation for a solar panel of the present invention is a factory in which a rectangular base plate is used as a front / rear wall, left / right wall or base plate and its front / rear wall of a continuous cloth foundation made of concrete. Since it is pre-manufactured, it is strong and heavy compared to a foundation constructed with ordinary steel frames, and it has become possible to obtain sufficient strength against wind loads, snow loads, earthquake loads, and the like.

  In addition, since the solar panel foundation has its own weight, it is only necessary to install it at a predetermined location on the site without using anchor bolts and the like, and an inclined surface with the outer surfaces of the front wall and the rear wall facing inward. By making the flow of wind smooth, the structure that releases the wind against the lift phenomenon caused by the wind, etc., can sufficiently cope with the lift, thereby reducing the weight, and use materials such as lightweight concrete It became possible.

  In addition, by manufacturing with concrete materials with water absorption or lightweight concrete materials with particularly good water retention, construction work is easy because of the relatively light weight when installing block foundations manufactured at factories. After installation, concrete materials with good water absorption and water retention absorb a large amount of moisture equivalent to 60-70% by weight, thereby increasing the weight and providing a stable foundation for solar panels. And became possible.

  Therefore, the solar panel unit in which the solar panel is installed using the solar panel foundation of the present invention is easy to install on the rooftop of a building, and is stable against the lift by wind when moisture is wet. It became possible to make a solar panel unit.

  In addition, the concrete material and water retention member used in the solar panel unit are excellent in water absorption and water retention, and by supplying cooling air to the back side of the solar panel, vaporization emitted from the concrete, water retention member, etc. It has become possible to prevent the temperature of the solar panel from rising due to heat.

  In addition, by changing the mounting position of the solar panel mounting member on the solar panel foundation and using connecting brackets, etc., it is possible to handle solar panels of different sizes, and work on site It was easy and construction accuracy was greatly increased.

The perspective view of the foundation for solar panels of this invention. FIG. The right side view. The perspective view of the other Example of the foundation for solar panels of this invention. The right view of the other Example of the foundation for solar panels of this invention. The perspective view which installed the water retention member used as a solar panel unit on the foundation for solar panels of this invention. The perspective view of the state which installed the solar panel on the water retention member of the solar panel unit using the foundation for solar panels of this invention. The same side view. The perspective view of the other Example of the state which provided the solar panel unit of this invention side by side. The side view of the other Example of the solar panel unit of this invention. The perspective view of the prior art example of a solar panel unit. The perspective view of the other conventional example of a solar panel unit. Sectional drawing of the prior art example of the concrete placement structure for installing a solar panel. The perspective view of the other conventional example of a solar panel unit. The schematic side view of the other conventional example of a solar panel unit. The schematic side view of the other conventional example of a solar panel unit.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the examples.

  FIG. 1 is a perspective view of a solar panel foundation 1 according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a right side view thereof.

  The solar panel foundation 1 is made of water-absorbing ordinary concrete material or light-weight concrete material with particularly good water retention, and has a low front wall 3 and a rear end side on the front end side of the rectangular base plate 2. The periphery of the base plate 2 is raised by the left wall 5 on the left end side and the right side wall 6 on the right end side, which are continuous with the rear wall 4 and the front and rear walls 3 and 4, and the rising wall A space S having the base plate 2 as a bottom surface is formed inside.

  The front wall 3 and the rear wall 4 are inclined surfaces in which the base plate 2 side is thickened and the upper side is formed to be gradually thinner, and the outer surface of the front wall 3 and the outer surface of the rear wall 4 are directed inward. Thus, the stable state at the time of installation is increased, and the wind blown to the front wall 3 and the rear wall 4 can be quickly released upward.

  The front wall 3 has a role of holding the front end of the solar panel T, and means for receiving rainwater flowing down along the upper surface of the solar panel T described later, which is obliquely placed and fixed on the solar panel base 1 and / or Alternatively, a water channel 7 formed in a groove shape is provided in order to introduce water supplied from the outside by a separate water supply means into the space S. The water channel 7 is formed by notching a part of the front wall 3 and providing a communication hole 8 that communicates with the water channel 7 and the space S so that the water flowing down the upper surface of the solar panel smoothly flows to the space S side. It is formed to flow.

  On the other hand, on the lower end side of the rear wall 4, there is provided an air introduction portion 9 that communicates with the space portion S from the bottom surface of the base plate 2 and takes air into the space portion S. An air vent 10 for allowing the air in the space S to flow out of the space S is provided at an upper portion where the rear wall 4 and the left and right walls 5 and 6 are in contact with each other.

  The communication hole 8 communicated with the water channel 7 is provided at a position in contact with or close to the front end side of a water retention member W (described later) placed on the upper portion of the space S. The water flowing in through the hole 8 is applied to the water retaining member W placed and supported on the upper end of the step 11 provided on the front side of the rear wall 4 and the upper ends of the left and right walls 5 and 6. Part will be absorbed.

  And a lot of water will permeate into the ordinary concrete material with good water absorption or the lightweight concrete material with particularly good water retention, which will be the main body of the solar panel foundation 1. It will be stored on the base plate 2 as well. A weir 12 raised from the base plate 2 is provided between the left and right walls 5 and 6 on the rear wall 4 side of the base plate 2, and water overflowing from the weir 12 flows out of the air introduction unit 9. Therefore, water up to the height of the weir 12 is accumulated in the space S.

  In addition, an air introduction groove 13 into which air flows is formed on the front wall 3 side on the upper side of the left and right side walls 5 and 6 that contact the front wall 3 and the left and right side walls 5 and 6. The air from the introduced low position is exhausted outward from the air vent 10 at the upper part by using the moisture in the lightweight concrete material body and the space S as vaporization heat.

  In the first embodiment, the water retention member W is supported by the step portion 11 of the rear wall 4 and the upper end portions of the left and right side walls 5 and 6, but as shown in FIG. Are provided on the inner side of the step part 11 of the rear wall 4 and the inner side of the left and right side walls 5 and 6, respectively. By placing the water retention member W on the inner placement steps 14, 15, 16, it is possible to provide a gap at a predetermined interval with the solar panel T described later, and at the same time, the front end of the water retention member W The position of the portion can be brought close to the base plate 2 side, and the water retaining member W can absorb most of the water that has flowed from the communication hole 8. At that time, a through groove 17 communicating with the air vent 10 is provided in the inner mounting step 14 of the rear wall 4 at an appropriate position.

  FIG. 5 shows another embodiment of the solar panel foundation, which is a solar panel foundation 1a in which the left and right walls 5 and 6 of the first and second embodiments are not provided.

  By providing a front wall 3a having a low height on the front end side of the rectangular base plate 2a and a rear wall 4a having a high height on the rear end side, a rising portion for supporting a solar panel T described later is provided. A space S having the base plate 2a as a bottom surface is formed on the inside, and rainwater and / or water from the water supply means that has flowed down on the solar panel T to the front wall 3a side into the space S. A concrete solar panel foundation 1a provided with a water channel 7a to be introduced is formed. The solar panel foundation 1a has no left and right walls.

  FIG. 6 shows a state in which a water retention member W is placed on the upper end of each of the step 11 side and the left and right side walls 5 and 6 of the rear wall 4 of the solar panel foundation 1 of the first and second embodiments described above. It is a perspective view of the state in the middle of constructing the solar panel unit which shows. A predetermined gap is provided between the water retention member W and the solar panel T by providing frame members 18 and 19 having a height for supporting the solar panel T on the left and right end portions of the water retention member W. ing.

  The main body and the water channel 7 made of the above-mentioned ordinary concrete material or light-weight concrete material, the water retention member W that retains the water supplied from the communication hole 8, the water accumulated in the space portion S, etc. Is made saturated with moisture, and the air floating in these space portions S is vaporized to generate cold air.

  As an example of the lightweight concrete material and / or the water retention member W, cement, a porous body and water are mixed, and the cement is hardened to obtain a predetermined shape, and the porous body is formed inside and on the surface of the cement gel. It is preferable to have a structure in which is distributed. Innumerable capillaries are formed inside the member and open to communicate with the surface. These innumerable capillaries are formed inside the porous body, between adjacent porous bodies, between the porous body and the cement gel, and inside the cement gel, or these are continuously formed. A first capillary portion that retains moisture in the pF region of pF 2.7 to 4.2, and a second capillary portion that retains moisture in the pF region of pF 4.2 to 5.5.

  Various types of cement can be used as the cement, and an inorganic cement or an organic cement such as a synthetic resin may be used. As the inorganic cement, for example, ordinary Portland cement or alumina cement can be suitably used.

  The porous body is a granular body having a large number of fine voids therein, preferably 0.5 mm to 2.0 mm, and more preferably one having a uniform particle size of about 1.0 mm.

  Specific examples of the porous material include calcium silicate heat insulating material, rock wool heat insulating material, diatomaceous earth calcined particles, zeolite, peat, charcoal, vermiculite, bentonite, perlite, activated carbon, and the like. Further, organic or inorganic fibers rounded into a substantially spherical shape can be used.

  Further, as the material for the lightweight concrete and / or the water retention member W, a water retention ceramic material which is a material having a very high water retention rate (for example, a water retention rate of 60% or more) and a water retention performance and weather resistance is adopted, and a capillary tube is used. It is also possible to adopt one that exhibits excellent evaporation performance depending on the phenomenon.

  FIG. 7 is a perspective view in which a solar panel T is installed on the flat water-retaining member W, and FIG. 7 is a right side view thereof. As described above, by providing the frame members 18 and 19 having a height between the water retention member W and the solar panel T around the water retention member W, a predetermined interval can be maintained between them. . The front end of the solar panel T is held on the protruding portion side of the front wall 3, and the whole is placed on the solar panel foundation 1 or fixed by appropriate means. The rain water that has fallen to the surface side of the solar panel T flows down to the front wall 3 side along the inclination of the solar panel T, passes through the water channel 7 and the communication hole 8 provided in the front wall 3, and passes through the space S side. However, since the tip of the water retention member W is positioned at the entrance position to the space S of the communication hole 8, a part of the water that has flowed down is absorbed by the water retention member W. . In addition, as described above, the water accumulated on the base plate 2 is vaporized or becomes saturated water vapor, and is made of ordinary concrete material with good water absorption that constitutes the space S, or lightweight concrete with particularly good water retention. It will be absorbed by the material and the water retaining member W and the like.

  External air is introduced from the air introduction unit 9, and heat of vaporization and upward airflow are generated from the lower side of the water retaining member W holding the moisture positioned above the space S. Moreover, the water | moisture content which remained in the normal concrete material, the lightweight concrete material, the water retention member W, etc. is discharge | released upwards, and the cold air by it is provided from the back surface side of the solar panel T. And the air is discharged | emitted outside from the air vent part 10 currently produced between the rear wall 4 and the solar panel T, and the flow of the said cold air is circulated.

  9 and 10, the water retention block Y provided with an upper surface plate on the upper surface of which the unevenness is repeated in a rib shape is placed on the solar panel base 1a shown in the above-described third embodiment of the present invention. A solar panel unit in which a solar panel T is laid is shown.

  The water-retaining block Y is formed of a massive water-retaining member, is formed of the same material as the water-retaining member W of each of the above-described embodiments, and rises on the front plate 3a on the front wall 3a side and hangs on the rear wall 4a. The upper and lower walls 21 and 22 having a substantially triangular shape that gradually rises and an upper surface portion including concave and convex portions 23 in which concave portions and convex portions appear alternately in the inclined direction are provided on the upper surface, and between the rising portion 20 and the concave and convex portions 23 In this case, a massive water retaining member is provided with a through hole 24 serving as a water channel and an air circulation port. Also, through holes 25 are provided at appropriate locations below the left and right side walls 21 and 22, and an air introduction portion 26 is provided on the front side of the base plate 2 a so as to communicate with the through long holes 24 while shifting the vertical position. Yes. Further, a concave portion is formed on the base plate 2a side of the water-retaining block Y, and a water drain hole 27 is provided on the base plate 2a side at an opposing position. Thereby, the water retention amount of the water retention block Y can be adjusted.

  The through hole 25 on the lower side of the water retention block Y serves as an introduction hole for rainwater or other water or a discharge hole for excess water in the water retention block Y.

  Around the concavo-convex portion 23 on the upper surface of the water retaining block Y, frame members 28 and 29 having a height are provided, and a solar panel T is laid thereon. By the above, the recessed part of the uneven | corrugated | grooved part 23 turns into an air circulation part, and the top part side of a convex part becomes a position which opposes the lower surface side of the solar panel T with a fixed space | interval. Since the entire water retention block Y including the uneven portion 23 and the left and right side walls 21 and 22 has water retention, the rain water flowing down from the solar panel T and the separately introduced water are separated from the solar panel T and the rising portion. Passing through the through-hole 24 from a gap with the fluid 20 and the like, flows into the base plate 2a side, and the water retention block Y absorbs the water. Accordingly, the water retaining block Y including the uneven portion 23 is always water retained, in particular, the air in the groove portion of the recessed portion is cooled and the solar panel T is cooled.

  In Example 6, the water retaining block Y is placed on the solar panel foundation 1a provided with the front wall 3a and the rear wall 4a on the base plate 2a, and the solar panel T is laid thereon. Instead of the block-shaped block water-retaining block Y as the water-retaining member, a lithographic or other shape water-retaining member is adopted, and the solar panel unit is arranged so that a space portion is formed on the lower side. There are also examples. In this case, steps can be provided on the front wall 3a and the rear wall 4a in order to place the water retention member, or a frame member can be separately assembled on the base plate 2a and used as a placing means.

  Moreover, in Example 6, although the solar panel base 1a and the water retention block Y serving as the water retention member are examples employing the same material, solar panels including other examples other than the above Examples 6 are included. There is also an embodiment in which both materials are used properly so that the foundation 1a side is made of ordinary concrete and the water retaining member is made of a material having excellent water retaining properties.

  As shown in FIG. 9, the solar panel foundations 1 and 1a are connected laterally as shown in FIG. 9 by bringing their left side walls into contact with or adjacent to the right side walls of other adjacent solar panel foundations 1. It can be made to extend as appropriate.

  It goes without saying that other embodiments can be obtained by appropriately combining various configurations of the above embodiments.

S space part T solar panel W water retention member Y water retention block 1, 1a solar panel foundation 2, 2a basic plate 3, 3a front wall 4, 4a rear wall 5 left side wall 6 right side wall 7 waterway 8 communication hole 9, 26 Air introduction part 10 Air vent part 11 Step part 12 Weir 13 Air introduction groove part 14, 15, 16 Inner mounting step part 17 Through groove 18, 19, 28, 29 Frame member 20 Rising part 21 Left side wall 22 Right side wall 23 Concavity and convexity part 24 Through hole 25 Through hole 27 Drain hole

Claims (11)

  Support the solar panel by providing a low front wall at the front end of the rectangular base plate, a high rear wall at the rear end, and left and right walls connected to the front and rear walls at the left and right ends. In a foundation for a solar panel made of concrete in which a rising portion is formed and a space portion having the inside as a bottom surface is formed by the rising portion, rainwater that has flowed down on the solar panel to the front wall side and / or Or the foundation for solar panels characterized by providing the water channel which introduces the water from a water supply means into this space part, and making the space part on this base plate into the cooling part of a solar panel.   The rectangular base plate has a front wall with a low height on the front end side and a rear wall with a high height on the rear end side to be a rising portion from the base plate that supports the solar panel. In the foundation for a concrete solar panel in which a space portion having the base plate as a bottom surface is formed, rainwater and / or water from the water supply means that flowed down on the solar panel to the front wall side and into the space portion The solar panel foundation according to claim 1, wherein a water channel to be introduced is provided, and a space portion on the base plate is used as a cooling portion of the solar panel.   The foundation for a solar panel according to claim 1 or 2, wherein the base plate, front / rear wall, left / right wall or base plate, front / rear wall are made of lightweight concrete material having high water absorption.   Support the solar panel by providing a low front wall at the front end of the rectangular base plate, a high rear wall at the rear end, and left and right walls connected to the front and rear walls at the left and right ends. The rising portion forms a space portion with the base as the bottom surface by the rising portion, and rainwater and / or water supplied from the water supply means flow down on the solar panel to the front wall side. Forming a concrete solar panel foundation provided with a water channel to be introduced into the space, and laying a water retaining member in the space of the solar panel foundation so as to cover an upper portion of the space; A solar panel unit comprising a solar panel laid at an upper portion of the water retention member with a space therebetween.   A rectangular base plate is provided with a low front wall on the front end side and a high rear wall on the rear end side to serve as a rising portion for supporting the solar panel. A concrete solar panel foundation having a space formed as a bottom surface and provided with a water channel for introducing rainwater and / or water from the water supply means that has flowed down on the solar panel to the front wall and into the space. A plate-shaped water retention member is disposed in the space portion of the solar panel foundation, and further, a solar panel is laid with an interval above the water retention member. A solar panel unit.   The rectangular base plate has a front wall with a low height on the front end side and a rear wall with a high height on the rear end side to be a rising portion from the base plate that supports the solar panel. A concrete part provided with a water channel for introducing rainwater and / or water from the water supply means that has flowed down on the solar panel on the front wall side into the space part. Forming a foundation for a solar panel, placing a massive water-retaining member in the space, and further laying a solar panel with a space above the water-retaining member. Solar panel unit.   The space between the water retention member and the solar panel is formed by arranging a member having a height between the front and rear walls and laying the solar panel on the member. Any one of the solar panel units.   The solar panel is laid on the entire surface of the water retaining member at intervals, and the space communicates with the space on the base plate and / or the water retaining member, and the cooling air from the front wall side to the rear wall side. The solar panel unit according to claim 4, wherein the solar panel unit is a passage.   9. The water-retaining member is formed of a porous material having a water-retaining property that absorbs and retains the supplied water and diverges the water from the surface. Solar panel unit.   The solar panel unit according to any one of claims 6 to 9, wherein the water-retaining member is formed in a lump shape, placed on a base plate, and provided with a rib-like uneven portion on the surface side thereof.   The solar panel foundation is made of ordinary concrete material, and the water retention member is formed of a porous material having water retention property that absorbs and retains the supplied water and releases the water from the surface. The solar panel unit according to any one of claims 4 to 10.

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