WO2017057609A1

WO2017057609A1 - Float and float for solar panel

Info

Publication number: WO2017057609A1
Application number: PCT/JP2016/078882
Authority: WO
Inventors: 大野　誠治
Original assignee: キョーラク株式会社
Priority date: 2015-09-29
Filing date: 2016-09-29
Publication date: 2017-04-06
Also published as: JP6697154B2; JP2017065354A

Abstract

Provided is a float that can suppress the deformation of a synthetic-resin body thereof even if a gas in the float expands and contracts due to changes in the environmental temperature. A float 10 is characterized by being provided with the following: a synthetic-resin float body 20 formed so as to be hollow; a projection part 202 that is provided so as to project from the upper surface of the float body 20 and that has a ventilation hole 201; and a microporous membrane body 203 that is adhered to the outside of the ventilation hole 201.

Description

Floats and floats for solar panels

The present invention relates to a float and a float for a solar panel.

In recent years, a hollow float made of a synthetic resin that floats on water has been used for various purposes by utilizing its buoyancy. For example, solar panels (also called solar cell panels or solar cell modules) that are used as solar power to convert sunlight into electric power have been used mainly on land such as roofs, walls, and land of buildings. In recent years, there have been many attempts to install it on water such as ponds and lakes that are placed on a float for a solar panel and are idle. In addition, floats are often used as anchors, floating bridges, aquaculture scaffolds, etc.

The hollow float made of synthetic resin is suitable for the above-mentioned applications in terms of ease of construction and maintenance accompanying installation, excellent lightness and durability, low cost, etc. For this reason, the float body made of synthetic resin may be deformed as the internal gas expands and contracts due to changes in weather, particularly temperature. If deformation occurs, the surface will be inclined and the solar panel will not be able to face the sun at the desired angle, reducing the efficiency of solar power generation, or if it is severe, the solar panel may fall off the float. In addition, problems such as hindering the worker from moving on the float for maintenance are caused.

As a hollow thing made of synthetic resin, there is a thing used as a table for meals, for example, besides a float (refer to patent documents 1). In Patent Document 1, it is reported that when the table is washed with hot water or heated and disinfected, the gas in the table expands, and the synthetic resin constituting the table is deformed or damaged. It has been proposed to provide a through-hole closed with a microporous membrane so as to pass outside. However, regarding the float in a completely different natural environment that floats on the water, what kind of microporous membrane, how to protect the microporous membrane to withstand use in the natural environment, etc. Nothing is disclosed.

JP-A-11-9351

The present invention has been made in view of such circumstances, and its purpose is to provide a float capable of suppressing deformation of the main body made of synthetic resin even when the internal gas expands and contracts due to environmental temperature changes. There is to do.

The present invention is grasped by the following composition.
(1) A first aspect according to the present invention is a float, which is a hollow synthetic resin body, a protrusion provided on the upper surface of the body, having a ventilation hole, and the ventilation And a microporous membrane attached to the outside of the hole.

(2) In the configuration of (1), the apparatus further includes a breathable lid that covers the protrusion, and the lid has the gap between the top surface and the microporous membrane. The protrusion may be covered.

(3) In the configuration of (2) above, the lid body may be screwed into the protruding portion.

(4) In any one of the configurations (1) to (3), the microporous membrane may be composed of micropores having a diameter of 0.1 to 10 μm.

(5) In any one of the constitutions (1) to (4), the microporous membrane may have an air permeability of 5 cm ⁻³ · cm ⁻² · s ^{−1 by} a fragile method. .

(6) A second aspect according to the present invention is a float for a solar panel, the float for a solar panel, wherein the float according to any one of (1) to (5) above and the float Provided with a first support portion and a second support portion that support the solar panel at a predetermined angle.

According to the present invention, it is possible to provide a float capable of suppressing the deformation of the main body made of synthetic resin even when the internal gas expands and contracts due to a change in environmental temperature.

It is the float for solar panels which concerns on embodiment of this invention, and is a perspective view which shows a solar panel transparently. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the float for solar panels which concerns on embodiment of this invention, (a) is a top view, (b) is sectional drawing in the bb line of (a), (c) is in the round frame of (b) FIG. It is an enlarged view which shows the 1st support part of the solar panel which concerns on this embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows typically the process of the vent hole which concerns on embodiment of this invention, (a) is a figure which provides the protrusion part which has a vent hole, (b) sticks a microporous film body to a vent hole. (C) is a figure which covered the protrusion part with the cover body, (d) is a figure which shows the cross section of the state of (c). It is a figure which shows the example of the microporous film body which concerns on embodiment of this invention, Comprising: (a) is a top view, (b) is sectional drawing.

Hereinafter, with reference to the attached drawings, a mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described in detail. Note that the same number is assigned to the same element throughout the description of the embodiment.

The float 10 according to the present invention is levitated on water such as a pond, a lake, a river, and the sea. The float 10 is hollow to obtain buoyancy, and a solar panel is placed on the upper surface thereof. The float 10 itself can be used as a salmon, a floating bridge, an aquaculture raft, or the like. Hereinafter, the float 10 will be described as the solar panel float 10, but it is needless to say that the float 10 is not limited thereto.

(Overall configuration of solar panel float 10)
First, the overall configuration of the solar panel float 10 will be described with reference to FIG. In the embodiments and the drawings, “front” indicates the “back” direction when the front side of the inclined solar panel is viewed in the horizontal direction, and “rear” indicates the “front” direction. “Left” and “right” respectively indicate a “left” direction and a “right” direction when the front side of the inclined solar panel is viewed in the horizontal direction.

As shown in FIG. 1, the solar panel float 10 according to the embodiment is a float for installing a solar panel 11 having a substantially square shape (substantially square shape in this example) on water such as a pond or a lake. In this solar panel float 10, the solar panel 11 is installed on the water while being inclined with respect to the horizontal direction. Note that the inclination angle θ of the solar panel 11 is set to a predetermined angle that is optimal for power generation according to the region and the like.

The solar panel float 10 includes a synthetic resin float body 20 formed in a hollow shape. The float body 20 is manufactured, for example, by blow molding in which a molten cylindrical parison is sandwiched between a plurality of divided molds. Various synthetic resins can be used as the molding material, and for example, polyolefin resins such as polyethylene and polypropylene can be used.

The layer structure of the float body 20 includes an upper wall 13 and a lower wall 15 that are opposed to each other with the hollow portion 12 therebetween. The upper wall 13 and the lower wall 15 are welded by the parting line PL, and thereby, a space in which the hollow portion 12 is closed is formed.

In addition, the manufacture of the float body 20 is not particularly limited to blow molding. For example, instead of a cylindrical parison, two melted sheets are placed between a pair of split molds, and the sealed space between the sheets and the split molds is sucked so that the two sheets You may manufacture the float main body which has a hollow part in between. In such a molding method, it is easy to put a foam material or the like as a core material between two sheets, so that a float body with higher rigidity can be obtained.

The float main body 20 includes an annular float portion 30 and a first support plate portion that is formed inside the annular float portion 30 and supports the solar panel 11 (in this example, a substantially rectangular shape that is long in the left-right direction). 40 (sometimes referred to as a first support in this specification). Further, the solar panel float 10 includes a first attachment member 60 to which the solar panel 11 can be attached.

Although the solar panel float 10 is not shown here, a plurality of solar panels 11 can be laid and installed by arranging a plurality of solar panel floats 10 in the front-rear direction and the left-right direction on the water. Two solar panel floats 10 adjacent in the front-rear direction are fastened by a female screw member 80 and a male screw member 81. On the other hand, two solar panel floats 10 that are adjacent in the left-right direction are connected by a connecting member (not shown) that is fastened by a male screw member 81 and a female screw member 80. Each solar panel float 10 can be stopped at a certain place on the water by an anchor (not shown).

(Configuration of the annular float 30)
Next, the structure of the annular float part 30 is demonstrated based on FIG. As shown in FIG. 2A, the annular float portion 30 is formed in a substantially quadrangular shape (in this example, a substantially rectangular shape that is long in the front-rear direction) in plan view. The annular float portion 30 is integrally formed with a front connection portion 31 and a rear connection portion 32 along the front side portion and the rear side portion thereof. The inner periphery 30 a of the annular float portion 30 includes a front opening 33, and a flat plate portion 37 that connects the left and right side wall surfaces 36 is formed behind the front opening 33. The front opening 33 is a hole formed by cutting and raising the first support plate 40.

The front connection part 31 is a thin plate part unevenly distributed on the upper side, and is formed with a thickness of about half of the basic thickness of the annular float part 30. A fitting hole 31 a that is recessed upward is formed in a substantially central portion on the back surface of the front side connecting portion 31.

The left and right front corners 31 b of the front connection part 31 are compression molded parts formed thinner than the basic thickness of the front connection part 31. A front through hole 31c is formed in the front corner portion 31b so as to penetrate in the vertical direction. Further, an engagement recess 31d that engages a connecting member (not shown) is formed in the vicinity of the rear side of the front through hole 31c.

The rear connection part 32 is a thin plate part that is unevenly distributed on the lower side, and is formed with a thickness that is approximately half the basic thickness of the annular float part 30. A protrusion 32 a that protrudes upward is formed at a substantially central portion of the upper surface of the rear connection portion 32. Furthermore, the rear side connecting portion 32 is a lower side of the front side connecting portion 31 of the other solar panel float 10 in a state where the protrusion 32a is fitted in the fitting hole 31a of the other solar panel float 10 adjacent to the front side. Superimposed on.

The left and right rear corners 32 b of the rear connection part 32 are compression molded parts formed thinner than the basic thickness of the rear connection part 32. A rear through hole 32c that penetrates in the vertical direction is formed in the rear corner portion 32b. A female screw member 80 is assembled in the rear side through hole 32c.

A convex front engagement portion 36 f that holds the standing state of the first support plate portion 40 is formed at the front end portions of the left and right side wall surfaces 36. A blow hole 201 formed when the float 10 is formed into a hollow body by blow molding is located on the left side of the left side wall surface 36. The blow hole 201 will be described in detail later.

In addition, in the float main body 20, the recessed concave rib (not shown) for a reinforcement can be provided in each part as needed. The shape of the concave rib is arbitrary, for example, a shape that is recessed in a groove shape or a cylindrical shape (including a substantially cylindrical shape and a substantially truncated cone shape), and a concave surface of each of the lower walls 15 of the upper wall 13 is recessed. It is possible to select from various forms such as a form in which the end faces are welded together.

(Configuration of first support portion (first support plate portion) 40)
Then, the structure of the 1st support plate part 40 is demonstrated based on FIG.2 (b). As shown in FIG. 2B, the first support plate portion 40 rises along the front wall surface 38 f while the lower side portion 41 is integrally formed on the front wall surface 38 f of the front opening 33. Further, the side portion 42 of the first support plate portion 40 is engaged with the front edge of the front side engaging portion 36f, and is sandwiched between the front side engaging portion 36f and the front wall surface 38f so as to stand up. Is retained. Furthermore, the height H1 of the first support plate portion 40 is set higher than a groove portion 80 ′ that is a second support portion described later. The first support plate portion 40 supports the upper edge portion 11 u of the solar panel 11 with the upper side portion 43 via the first attachment member 60.

The first support plate 40 is assembled in the following procedure. This assembling method includes a step (A) of preparing the hollow molded body 20A of the float body 20, a cutting step (B) for partially cutting the hollow molded body 20A, and a bending step (C) for raising the cut portion. Consists of.

In the step (A), a hollow body in which a substantially rectangular flat plate portion corresponding to the first support plate portion 40 is integrally formed on the inner periphery 30a of the annular float portion 30 is prepared during blow molding of the float body 20. . The flat plate portion is set on the parting line PL (see FIG. 1) of the inner periphery 30a so as to block the inner periphery 30a. An annular crushing portion corresponding to the outline of the first support plate portion 40 is formed on the flat plate portion, and this crushing portion is a portion where the upper wall 13 and the lower wall 15 are welded and compression molded. It is formed thinner than other parts.

In step (B), the portion corresponding to the lower side portion 41 of the first support plate portion 40 is left, and the three sides of the crushed portion are cut with a cutting blade or the like. By cutting the crushed portion in this way, the contours of the front opening 33 and the flat plate portion 37 described above are formed.

In step (C), the straight plate portion of the flat plate portion is made to function as a hinge, and the straight portion is bent upward as a bending fulcrum. Then, the first support plate portion 40 formed of the cut and raised flat plate portion is further rotated upward and pressed against the front wall surface 38f. At this time, the side portion 42 of the first support plate portion 40 gets over the front engagement portion 36f. Thereby, the standing state of the first support plate part 40 is held (temporarily fixed) with respect to the annular float part 30.

(Configuration of the first mounting member 60)
Next, the structure of the 1st attachment member 60 is demonstrated based on FIG. As shown in FIG. 3, the first attachment member 60 is a member interposed between the upper side portion 43 of the first support plate portion 40 and the upper edge portion 11 u (see FIG. 1) of the solar panel 11. The first attachment member 60 has a fitting groove portion 61 opened on the rear side extending in the left-right direction. The upper edge portion 11u of the solar panel 11 can be fitted into the fitting groove portion 61.

The width W1 of the first mounting member 60 is set wider than the width W2 of the upper side portion 43 of the first support plate portion 40. In this example, the width W1 of the first mounting member 60 is set to be approximately the same as or slightly smaller than the width WS (see FIG. 1) of the upper edge portion 11u of the solar panel 11. Various materials such as synthetic resin can be used as the material constituting the first mounting member 60.

The convex portions 65 and the concave portions 66 are alternately formed in the left and right directions on the front portion and the rear portion of the upper end portion of the first mounting member 60, respectively. Further, the front convex portion 65 and the rear concave portion 66 face each other in the front-rear direction. On the other hand, a convex portion 45 and a concave portion 46 that are engaged with the convex portion 65 and the concave portion 66 of the first mounting member 60 are formed on the upper side portion 43 of the first support plate portion 40. Thus, the first mounting member 60 has the convex portion 65 and the concave portion 66 engaged with the convex portion 45 and the concave portion 46, thereby sandwiching the upper side portion 43 of the first support plate portion 40 from the front-rear direction, and The first support plate portion 40 is attached in a state where movement in the left-right direction is prevented. In this example, the first attachment member 60 is attached to the first support plate portion 40 in a state where the center position in the left-right direction is aligned.

(Configuration of second support portion (groove portion) 80 ')
The second support part is formed by a groove part 80 ′ formed in the annular float part 30. As a result, the support plate portion (first support plate portion 40) is formed only in the first support portion, and the annular float portion 30 defines the opening 33 as a reflection of the formation of the first support plate portion 40. It comes to have. As shown in FIG. 2 (c), the groove portion 80 ′ as the second support portion is formed on the upper wall 13 of the annular float portion 30 with a slope of an angle θ with respect to the annular float portion 30. It is formed to have an opening on the 40 side. As a result, as shown in FIG. 2B, the solar panel 11 has its other edge engaged with the groove 80 ′, which is the second support, and one edge is the first support plate. By being supported by the portion 40, it can be arranged to be inclined at an angle θ with respect to the annular float portion 30.

(Solar panel 11 mounting structure)
The solar panel 11 is supported by a first support plate portion 40 that is a first support portion and a groove portion 80 ′ that is a second support portion. As an example of the mounting structure of the solar panel 11, as shown in FIG. 3, for example, in the upper edge portion 11u of the solar panel 11, a portion of a frame (for example, an aluminum frame) provided on the outer periphery of the solar panel 11 is used. The first mounting member 60 is fitted into the fitting groove 61 having a substantially U-shaped cross section. Then, the frame 11a and the first attachment member 60 are fastened from the front side of the first attachment member 60 with the male screw member 16 such as a screw. Moreover, you may form in the shape which open | releases the fitting groove part 61 toward back rear downward according to inclination-angle (theta) of the solar panel 11. FIG.

(Configuration of vent hole 201 and microporous membrane 203)
As described above, the float 10 is configured as a hollow body. In the case of molding by blow molding, in blow molding, the molding material is melted by an extruder, two parisons that are formed in a cylindrical shape through the head are sandwiched between a pair of molds, and one mold is placed inside the pair of molds. Gas is blown through the provided blow needle, and the parison is pressed against the inner surfaces of the pair of molds by the pressure to form a hollow body. At this time, the head may be composed of a pair, and one parison may be extruded from each.

In this way, when the hollow body, that is, the float 10 is formed by blow molding, a blow hole 201 penetrating the inside and outside of the float 10 is formed at the trace where the blowing needle for blowing the gas is extracted. Since the float 10 is levitated on the water, if the blow hole 201 is left as it is after the construction on the water, even if it is located on the upper side, the water is introduced from the blow hole 201 to the inside of the float 10 by waves or the like. The float 10 may be submerged in a serious situation.

In order to prevent such a situation, the blow hole 201 generated during molding needs to be welded, and is usually sealed by spin welding. Spin welding is a welding method that uses the frictional heat generated on the contact surface by fixing the float 10 as one member and rotating and pressurizing the stopper as the other member. Since the amount of melt can be increased, it is easy to ensure airtightness and watertightness. Further, a hot melt process is applied to the sealing portion so that the spin weld plug does not fall off, and a rubber sheet is attached to the weld portion. However, in spin welding, since airtightness and watertightness are good, when the gas inside the float 10 expands due to environmental temperature changes, the gas cannot be released to the outside, and the float 10 made of synthetic resin is deformed. May occur.

In this embodiment, in order to avoid such a situation, the blow hole 201 is used as a ventilation hole, the microporous film body 203 is attached to the blow hole 201, and water enters the float 10 from the outside of the float 10 In addition, when the gas expands inside the float 10 due to a change in environmental temperature, only the gas is released to the outside of the float 10. In other words, the float 10 is provided with a function of breathing in accordance with expansion and contraction of the internal gas due to environmental temperature changes.

Note that, as described above, the manufacture of the float body 20 is not particularly limited to blow molding. For example, instead of a cylindrical parison, two melted sheets are placed between a pair of split molds, and the sealed space between the sheets and the split molds is sucked so that the two sheets You may manufacture the float main body which has a hollow part in between. Therefore, since the blow hole 201 is not formed in such a case, in order to suppress the expansion of the gas inside the float 10, the drill hole 201 is positively provided as a vent hole after the hollow portion is completed. Is required. Hereinafter, the hole that communicates the inside and the outside of the float 10 is referred to as a vent hole 201 including the blow hole 201 and the drilled hole 201.

Specifically, as shown in FIG. 4A, the float 10 includes a protruding portion 202 having a vent hole 201 on the top surface. And as shown in FIG.4 (b), the microporous film body 203 is affixed on the outer side of the vent hole 201 in order to make the inside and the outside of the float 10 communicate. The relative size of the float 10 and the protrusion 202 may be arbitrarily set in consideration of the use of the float 10 and the convenience of use, and the relative size shown is an example. However, it is not limited to this.

The reason why the vent hole 201 is provided on the top surface of the protruding portion 202 is to prevent the microporous membrane 203 itself from being blocked by water (rain, waves, etc.). For example, when water is applied to the upper surface of the float 10, if the vent hole 201 is provided in a flat place or a recess, the place becomes a puddle. Since the inside of the microporous membrane 203 is hollow, once it starts to bend, the microporous membrane 203 will be recessed around that point, and water will be more easily collected. If it does so, even if the penetration | invasion of the water to the inside of the float 10 could be prevented, the respiration of the float 10 will be inhibited. As a result, the float 10 expands and deforms when the outside air temperature rises. In order to prevent such a situation, the microporous film body 203 is provided on the top surface of the projecting portion 202 and protruded, thereby reliably preventing the microporous film body 203 itself from being blocked by water.

Furthermore, as shown in FIG. 4 (c), the microporous membrane 203 is liable to be peeled off due to secular change or external force only by being attached, so a lid shaped like a cap of a container. It is preferable to create 204 and cover the periphery of the protruding portion 202 with the lid 204. At that time, in order to prevent the solar panel float 10 from becoming airtight by the lid 204, the lid 204 is provided with air permeability by, for example, making a hole at the tip thereof, and as shown in FIG. The gap is set between the top surface of the lid 204 and the microporous membrane 203 so that a gap is generated even when the lid 204 is completely closed. 4 shows an example in which the lid 204 is locked to the protruding portion 202 by screwing, but it is not limited to screwing but may be locked by fitting, for example.

As shown in FIG. 5, the microporous membrane 203 has a three-layer structure, and has a microporous membrane layer 203a in the middle layer, a packing material layer 203b in the upper layer, and an adhesive layer 203c in the lower layer. Polytetrafluoroethylene (PTFE) can be suitably used as the microporous membrane layer 203a, a polyester net can be used as the packing material layer 203b, and an acrylic adhesive layer composed of a nonwoven fabric substrate can be used as the adhesive layer 203c. . The microporous membrane layer 203a is composed of micropores having a diameter of 0.1 to 10 μm, prevents intrusion of water having a diameter of 100 to 3000 μm, and is a gas (water vapor) having a diameter of 0.0004 μm. Allow permeation. According to JIS P 8117, a breathable type of 5 cm ³ · cm ^-2 · s ^-1 can be suitably used.

The results of an experiment verifying the degree of expansion will be described in order to examine the air permeability of the solar panel float 10 according to the present embodiment.

(conditions)
A sample of the solar panel float 10 was prepared with a volume of about 200 L and a vent hole diameter of 8 mm. The temperature was changed from 23 ° C. to 47 ° C. in 1.5 hours.

(Example)
A microporous membrane 203 was adhered to the vent hole 201, and the air permeability was measured in accordance with JIS P 8117. The microporous membrane is Timish S-NTF1033-N06T manufactured by Nitto Denko Corporation, and its specifications are as follows (see FIG. 5).
・ Outer diameter ED: φ14mm
・ Inner diameter ID: φ8mm
・ Total thickness T: 0.25mm
-Film thickness t: 0.1 mm
・ Nominal pore diameter: 0.6μm
- air ^{^{^{permeability: 5cm 3 · cm -2 · s}}} -1 ( Frazier method). Reflecting that the diameter of the vent hole 201 used in the experiment is 8 mm, the air permeability is 2.5 cm ³ · s ⁻¹ .

(Comparative example)
The vent hole 201 was sealed by spin welding, and a hot melt process was applied to the sealing portion so that the plug for spin welding did not fall off.

(result)
In the comparative example, expansion of about 15 L (about 7.5% with respect to the original volume) was observed with respect to the temperature change from 23 ° C. to 47 ° C. In the comparison between the example and the comparative example, since the inclination of the solar panel float 10 becomes a problem, the measurement was performed by the vertical dimension change of the peripheral edge when the solar panel float 10 was placed horizontally. Then, while the comparative example had a dimensional change of about 17 mm, in the example, the dimensional change was about 5 mm, and the dimensional change was about 1/3 or less. Thereby, the effect by covering the ventilation hole 201 with the microporous film body 203 without sealing was confirmed.

Although made when the expansion amount of volume 15L in the comparative example (15000 cm ³⁾ is divided by 1.5 hours i.e. 5400 seconds and 2.7 cm ³ · ^{s -1,} a microporous film body 203 having air permeability of this number When used, it is theoretically possible to avoid swelling.

As mentioned above, although this invention was demonstrated using embodiment and an Example, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment and Example. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above-described embodiments and examples. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

10 ... Solar panel float 11 ... Solar panel 11u ... Upper edge (one edge)
11d: Lower edge (edge on the other side)
20 ... Float body 201 ... Vent hole (blow hole, drilled hole)
202 ... Projection 203 ... Microporous membrane 204 ... Lid 30 ... Annular float 30a ... Inner circumference 38f ... Front wall (one wall)
40 ... 1st support board part (1st support part)
41 ... Lower side part 42 ... Side part 43 ... Upper side part 80 '... Groove part (second support part)

Claims

A float,
A float body made of synthetic resin formed into a hollow,
A protruding portion provided on the upper surface of the float body and having a vent hole;
And a microporous membrane attached to the outside of the vent hole.
Further comprising a breathable lid that covers the protrusion,
2. The float according to claim 1, wherein the lid covers the protrusion so that a gap is formed between the top surface of the lid and the microporous membrane.
The float according to claim 2, wherein the lid body is screwed into the projecting portion.
The float according to any one of claims 1 to 3, wherein the microporous membrane is composed of micropores having a diameter of 0.1 to 10 µm.
The float according to any one of claims 1 to 4, wherein the microporous membrane has an air permeability of 5 cm -3 · cm -2 · s -1 in a fragile method.
A solar panel float,
The float according to any one of claims 1 to 5,
A float for a solar panel, comprising: a first support portion and a second support portion which are provided on an upper surface of the float and support the solar panel at a predetermined angle.