JP2018115469A - Heat insulation panel and waterproof construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation panel and a waterproof construction, excellent in water drainage.SOLUTION: A first heat insulation panel 1A is a component to be constructed by the side of a second heat insulation panel 1B. The first heat insulation panel 1A has a junction 6 to be joined with the second heat insulation panel 1B on the outer peripheral part 11, and a part 8 stuck to a waterproof sheet 2 covering both of the junction 6 and the second heat insulation panel 1B. The part 8 stuck to a waterproof sheet includes a concavity with a bottom 81. With Drepresenting the depth of the concavity to the bottom 81 and trepresenting the thickness of the waterproof sheet 2, D/tis 0.5 or more and 2.0 or less.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a heat insulating panel and a waterproof structure.

  Conventionally, there are houses in which a thermal insulation panel is constructed on an inclined roof or an inclined floor of a veranda. In this construction, a large number of thermal insulation panels are arranged in a matrix. At this time, depending on the construction state, a gap may be formed between adjacent heat insulating panels. If there is a gap, rainwater or the like may enter the house from this gap and cause rain leakage. Therefore, a belt-like waterproof sheet is attached so as to cover this gap, and intrusion of rainwater or the like is prevented (see, for example, Patent Document 1).

  However, when a belt-shaped waterproof sheet is attached, a step is generated on the heat insulating panel by the thickness of the waterproof sheet. For example, if a belt-shaped waterproof sheet extends in a direction perpendicular to the inclination direction of the heat insulation panel, the flow of water such as rain water on the heat insulation panel is blocked by the step formed by the waterproof sheet, that is, drainage. (Drainage) deteriorates, and as a result, water accumulates there. For example, the puddle may cause mold, or may cause water to scatter and wet the periphery when the puddle is stepped on.

Japanese Patent No. 4865592

  The objective of this invention is providing the heat insulation panel and waterproof structure excellent in drainage.

Such an object is achieved by the present inventions (1) to (14) below.
(1) A heat insulation panel constructed side by side with a plurality of heat insulation panels,
The outer edge portion has a joint portion to be joined with another heat insulation panel which is one heat insulation panel among the plurality of heat insulation panels,
Having a waterproof sheet attaching part to which a waterproof sheet covering the joint part together with the other heat insulating panel is attached;
The waterproof sheet attaching part is composed of a concave part having a bottom part,
A heat insulating panel, wherein D / t is 0.5 or more and 2.0 or less, where D is the depth to the bottom of the recess and t is the thickness of the waterproof sheet.

  (2) The width | variety of the said bottom part is a heat insulation panel as described in said (1) which is 40 mm or more and 200 mm or less.

  (3) The said recessed part is a heat insulation panel as described in said (1) or (2) which stands upright from the said bottom part and has a side wall part inclined with respect to this bottom part.

  (4) The heat insulation panel according to any one of (1) to (3), wherein the joint portion is configured to be joined to the other heat insulation panel by fitting.

  (5) The heat insulation panel according to any one of (1) to (3), wherein the joint portion is configured to be joined to the other heat insulation panel by abutment.

(6) The heat insulation panel is constructed in an inclined posture,
The said recessed part is a heat insulation panel in any one of said (1) thru | or (5) extended in the direction which cross | intersects the inclination direction of the said heat insulation panel.

  (7) The heat insulation panel according to any one of (1) to (6), wherein the thickness t is 1.0 mm or more and 2 mm or less.

(8) a first heat insulation panel;
A second heat insulating panel joined side by side with the first heat insulating panel;
A waterproof structure comprising a waterproof sheet covering a joint portion between the first heat insulation panel and the second heat insulation panel,
Each of the first heat insulation panel and the second heat insulation panel has a waterproof sheet attaching portion to which the waterproof sheet is attached,
The waterproof sheet attaching part is composed of a concave part having a bottom part,
A waterproof structure, wherein D / t is 0.5 or more and 2.0 or less, where D is the depth to the bottom of the recess and t is the thickness of the waterproof sheet.

  (9) The waterproof structure according to (8), wherein a width of the bottom portion is 40 mm or more and 200 mm or less.

  (10) The waterproof structure according to (8) or (9), wherein the concave portion has a side wall portion standing from the bottom portion and inclined with respect to the bottom portion.

  (11) The waterproof structure according to any one of (8) to (10), wherein the joint is configured to be joined by fitting.

  (12) The waterproof structure according to any one of (8) to (10), wherein the joint is configured to be joined by abutment.

(13) Each of the first heat insulation panel and the second heat insulation panel is constructed in an inclined posture,
The waterproof structure according to any one of (8) to (12), wherein the recess extends in a direction intersecting with an inclination direction of the first heat insulation panel and the second heat insulation panel.

  (14) The waterproof structure according to any one of (8) to (13), wherein the thickness t is not less than 1.0 mm and not more than 2 mm.

  ADVANTAGE OF THE INVENTION According to this invention, the heat insulation panel excellent in drainage and a waterproof structure can be provided.

FIG. 1 is a perspective view showing a first embodiment of a heat insulating panel and a waterproof structure according to the present invention. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a vertical sectional view showing a second embodiment of the heat insulation panel and waterproof structure of the present invention.

  Hereinafter, the heat insulation panel and waterproof structure of this invention are demonstrated in detail based on suitable embodiment shown to an accompanying drawing.

<First Embodiment>
FIG. 1 is a perspective view showing a first embodiment of a heat insulating panel and a waterproof structure according to the present invention. 2 is a cross-sectional view taken along line AA in FIG. In the following, for convenience of explanation, the upper side in FIG. 2 is referred to as “upper” or “upper”, and the lower side is referred to as “lower” or “lower”. Further, the left side in FIG. 2 (the same applies to FIG. 3) may be referred to as “downstream side” and the right side may be referred to as “upstream side”.

  The waterproof structure 10 shown in FIG. 1 is constructed on the floor of the veranda 100, for example. The waterproof structure 10 includes a plurality of first heat insulation panels (heat insulation panels) 1A, a plurality of second heat insulation panels (heat insulation panels) 1B, and a plurality of waterproof sheets 2.

  The 1st heat insulation panel 1A and the 2nd heat insulation panel 1B are arranged, arranged, in a matrix form, ie, are arranged. In this embodiment, the 1st heat insulation panel 1A is arrange | positioned at 1 row in the left-right direction in FIG. 1, and the 2nd heat insulation panel 1B is 1st above the row | line | column of 1st heat insulation panel 1A in FIG. Like the heat insulation panel 1A, they are arranged in a line in the left-right direction in FIG.

  The 1st heat insulation panel 1A and the 2nd heat insulation panel 1B have the same laminated structure except an arrangement | positioning location differing (refer FIG. 2). Hereinafter, a laminated structure of the first heat insulation panel 1A will be described as a representative.

  As shown in FIG. 2, the first heat insulation panel 1A is a laminated plate having a resin layer 3, a metal layer 4a, a metal layer 4b, a resin layer 5a, and a resin layer 5b.

  The resin layer 3 is made of, for example, polyurethane foam, and is a portion that exhibits heat insulation properties in the first heat insulation panel 1A.

  A metal layer 4 a is laminated on the lower surface side of the resin layer 3, and a metal layer 4 b is laminated on the upper surface side of the resin layer 3. The metal layer 4a and the metal layer 4b are made of various steel plates such as a Galvalume steel plate (registered trademark) and a stainless steel plate, for example, and are portions that exhibit environmental resistance (antiseptic properties) in the first heat insulating panel 1A.

  The resin layer 5a and the resin layer 5b are films made of, for example, polyvinyl chloride. The resin layer 5a covers the metal layer 4a and exhibits rust prevention properties to the metal layer 4a. The resin layer 5b covers the metal layer 4b and exhibits rust prevention properties to the metal layer 4b.

The 1st heat insulation panel 1A and the 2nd heat insulation panel 1B are each constructed in the attitude | position inclined with respect to the horizontal direction, for example, are being fixed by screwing. Thereby, for example, rainwater or the like can flow down from the upstream side toward the downstream side, and drainage performance on the veranda 100 is improved. The first insulating panel 1A, as the inclination angle theta ₁ of the second insulating panel 1B, no particular limitation.
Further, the first heat insulation panel 1A and the second heat insulation panel 1B may have the same or different vertical length and horizontal length, respectively.

  As shown in FIG. 2, in the waterproof structure 10, the first heat insulation panel 1 </ b> A and the second heat insulation panel 1 </ b> B are adjacent to the upstream side and the downstream side, that is, arranged side by side and joined to each other. The 1st heat insulation panel 1A has the junction part 6 joined to the 2nd heat insulation panel 1B. The 2nd heat insulation panel 1B has the junction part 7 joined to 1A of 1st heat insulation panels. And when constructing the floor of the veranda 100, the junction part 6 of the 1st heat insulation panel 1A and the junction part 7 of the 2nd heat insulation panel 1B will be joined.

  The joint 6 of the first heat insulation panel 1A is provided at the outer edge 11 on the upstream side of the first heat insulation panel 1A. The joint portion 6 protrudes from the outer edge portion 11 toward the upstream side. Moreover, the junction part 6 becomes the protruding item | line formed from the paper surface near side in FIG. 2 toward the back | inner side.

The joint 7 of the second heat insulation panel 1B is provided at the outer edge 12 on the downstream side of the second heat insulation panel 1B. The joint portion 7 is recessed in the outer edge portion 12 toward the upstream side. Further, the joining portion 7 is a groove (concave portion) formed from the front side of the paper in FIG. 2 toward the back side. In addition, it is preferable that the depth of the joint portion 7 is deeper than the protruding amount of the joint portion 6.
And the junction part 6 and the junction part 7 can carry out uneven | corrugated fitting.

  In this way, the joint 6 of the first heat insulation panel 1A is joined to the joint 7 of the second heat insulation panel 1B (another heat insulation panel that is one of the plurality of heat insulation panels) by fitting. The On the other hand, the joint 7 of the second heat insulation panel 1B is also joined to the joint 6 of the first heat insulation panel 1A (another heat insulation panel that is one of the plurality of heat insulation panels) by fitting. By such fitting, the 1st heat insulation panel 1A and the 2nd heat insulation panel 1B can be joined firmly. Thereby, for example, the first heat insulation panel 1A and the second heat insulation panel 1B can be reliably prevented from being unintentionally removed due to strong winds or the like, and thus the veranda 100 can be used safely and comfortably. .

  In addition, it is preferable that 1 A of 1st heat insulation panels have the junction part 7 of the structure (shape) similar to the junction part 7 of the 2nd heat insulation panel 1B in the outer edge part 13 of the downstream. Moreover, it is preferable that the 2nd heat insulation panel 1B also has the junction part 6 of the structure (shape) similar to the junction part 6 of the 1st heat insulation panel 1A in the outer edge part 14 of an upstream. Thereby, a common (same) heat insulation panel can be used as 1st heat insulation panel 1A and 2nd heat insulation panel 1B.

  The waterproof sheet 2 is a member that covers the joint 6 and the joint 7 that are joined to each other. The waterproof sheet 2 has a belt shape and is formed of a resin sheet containing a resin material.

  The resin material is not particularly limited, and examples thereof include a vinyl chloride resin such as polyvinyl chloride, a polyolefin resin, an ethylene vinyl acetate copolymer, and the like, and one or more of these are combined. Can be used. Among these, a vinyl chloride resin is preferable. Thereby, the heat-sealing property and solvent welding property of the waterproof sheet 2 can be made excellent.

  The vinyl chloride resin is not particularly limited as long as it is a polymer containing vinyl chloride, that is, an oligomer, a prepolymer and a polymer. For example, a vinyl chloride monomer or vinyl chloride and vinyl acetate, ethylene Or a copolymer with propylene and the like, and a mixture of two or more of these polymers.

  The resin material may further contain various plasticizers, various stabilizers, various antioxidants, various ultraviolet absorbers, processing aids, lubricants, fillers, flame retardants, and coloring materials, In particular, a plasticizer is preferably included. Thereby, the waterproof sheet 2 can have more excellent flexibility.

  From the above, the waterproof sheet 2 is preferably composed of a vinyl chloride resin sheet containing a vinyl chloride resin and a plasticizer. Thereby, the said effect can be exhibited more notably.

  The waterproof sheet 2 is composed of a single layer of the resin sheet, for example, a fiber layer inserted in the middle of the thickness direction, that is, a first resin laminated in the thickness direction. The thing of the structure by which the fiber layer (fiber sheet) was clamped between the layer and the 2nd resin layer may be sufficient.

  The fiber layer is composed of an aggregate of fibers, and examples thereof include a cloth sheet such as a cloth such as a woven fabric or a non-woven fabric, a net formed with a plurality of lattices of warp and weft, and a waterproof sheet. By providing 2 with such a fiber layer, the strength (tear strength, tensile strength, etc.) and durability (resistance to repeated fatigue) of the waterproof sheet 2 can be improved.

The thickness _{t 2} (thickness t) of the tarpaulin 2 is not particularly limited, for example, is preferably at not less than 1.0mm 2mm or less. Thereby, the waterproof sheet 2 prescribed | regulated by JIS specification can be used.

  1 A of 1st heat insulation panels have the waterproof sheet sticking part 8 to which the waterproof sheet 2 is stuck on the outer edge part 11 side. On the other hand, the 2nd heat insulation panel 1B has the waterproof sheet sticking part 9 to which the waterproof sheet 2 is stuck on the outer edge part 12 side. And the waterproof sheet 2 can cover the junction part 6 of the 1st heat insulation panel 1A joined to the junction part 7 of the 2nd heat insulation panel 1B with the junction part 7 of the 2nd heat insulation panel 1B, and is 1st heat insulation. The joint 7 of the second heat insulation panel 1B joined to the joint 6 of the panel 1A can be covered together with the joint 6 of the first heat insulation panel 1A.

  By the way, depending on the construction state, there may be a gap 20 between the outer edge portion 11 of the first heat insulation panel 1A and the outer edge portion 12 of the second heat insulation panel 1B (see FIG. 2). If there is a gap 20, rainwater or the like may enter the house from the gap 20 and cause rain leakage. Therefore, the belt-shaped waterproof sheet 2 can be attached so as to cover the gap 20 to prevent intrusion of rainwater or the like from the gap 20.

  As shown in FIG. 2, the waterproof sheet attaching portion 8 of the first heat insulating panel 1 </ b> A is configured by a concave portion having a bottom portion 81 and a side wall portion 82 erected from the bottom portion 81.

  The bottom portion 81 is configured by a flat surface from which the resin layer 5b is exposed. The bottom portion 81 extends in the depth direction of the paper in FIG. 2, and the waterproof sheet 2 is attached along the extending direction. The sticking method is not particularly limited, and for example, a heat fusion method or a welding method can be used.

The side wall portion 82 stands on the downstream side of the bottom portion 81 and is formed along the extending direction of the bottom portion 81. The side wall portion 82 is inclined at an obtuse angle with respect to the bottom portion 81. The inclination angle θ ₈₂ is not particularly limited, and is preferably more than 90 ° and less than 180 °, for example. Thereby, the operation | work which sticks the waterproof sheet 2 to the bottom part 81 becomes easy, ie, the workability | operativity at the time of sticking of the waterproof sheet 2 improves.

  The waterproof sheet adhering portion 9 of the second heat insulation panel 1 </ b> B is also configured by a concave portion having a bottom portion 91 and a side wall portion 92 erected from the bottom portion 91.

  The bottom portion 91 is configured by a flat surface from which the resin layer 5b is exposed. The bottom 91 extends in the depth direction of the paper in FIG. 2, and the waterproof sheet 2 is attached along the extending direction. As the sticking method, for example, a heat fusion method or a welding method can be used as described above.

The side wall portion 92 is erected on the upstream side of the bottom portion 91 and is formed along the extending direction of the bottom portion 91. The side wall 92 is inclined at an obtuse angle with respect to the bottom 91. The inclination angle θ ₉₂ is preferably set to the same size as the inclination angle θ ₈₂ , for example. Thereby, the operation | work which sticks the waterproof sheet 2 to the bottom part 91 becomes easy, ie, the workability | operativity at the time of sticking of the waterproof sheet 2 improves.

  The waterproof sheet affixing portion 8 constituted by such a recess extends in a direction intersecting the inclination direction of the first heat insulation panel 1A, and similarly, the waterproof sheet affixing portion 9 is also a second heat insulation panel. It extends in a direction that intersects the tilt direction of 1B.

Then, the depth to the bottom 81 of the waterproof sheet sticking portion 8 and _{D 8} (depth D), when the thickness of the waterproof sheet 2 was _{t 2} (thickness _{t), D 8 / t 2} (= D / t) is 0.5 or more and 2.0 or less. Further, the depth to the bottom 91 of the waterproof sheet sticking portion 9 and _{D 9} (depth D), when the thickness of the waterproof sheet 2 was _{t 2} (thickness _{t), D 9 / t 2} (= D / t) is preferably the same size as D ₈ / t ₂ .

Here, suppose that the waterproof sheet adhering portion 8 and the waterproof sheet adhering portion 9 are not composed of concave portions, that is, the case where the concave portions are omitted. In this case, when the belt-shaped waterproof sheet 2 is adhered, a step is generated on the first heat insulation panel 1A or the second heat insulation panel 1B by the thickness t ₂ of the waterproof sheet 2. And the level | step difference by this waterproof sheet 2 blocks | interrupts the flow of water, such as rainwater, from an upstream side, ie, drainage (drainage property) worsens, and as a result, water accumulates there. For example, the puddle may cause mold, or may cause water to scatter and wet the periphery when the puddle is stepped on.

Therefore, in the waterproof structure 10, the waterproof sheet attaching portion 8 and the waterproof sheet attaching portion 9 are both constituted by concave portions, and D ₈ / t ₂ and D ₉ / t ₂ are in the numerical ranges, respectively. Thereby, rainwater or the like from the upstream side is prevented from being blocked by the waterproof sheet 2, and thus can flow smoothly toward the downstream side. Thus, the waterproof structure 10 is excellent in draining. For example, when D ₈ / t ₂ and D ₉ / t ₂ exceed the numerical range, the flow of rainwater or the like is blocked by the waterproof sheet 2, and water tends to accumulate on the upstream side. _Further, when D 8 / _{t 2} and _D 9 / _{t 2} is below the numerical range, easily water reservoir in the waterproof sheet sticking portion 8 and the waterproof sheet sticking portion 9 (concave).

Moreover, it is preferable that both the width W _{81 of} the bottom part ₈₁ and the width W ₉₁ of the bottom part 91 are 40 mm or more and 200 mm or less.

For example, although it depends on the size of the first heat insulation panel 1A, when the width W ₈₁ exceeds the numerical range, the first heat insulation panel 1A has a flat portion (upper surface (front side surface) other than the waterproof sheet attaching portion 8. )) May not be sufficiently secured (the same applies to the width W ₉₁ ). Moreover, when the width W ₈₁ is less than the above numerical range, the sticking area of the waterproof sheet 2 becomes insufficient, and the waterproof sheet 2 may be easily peeled off (the same applies to the width W ₉₁ ).

  In addition, as shown in FIG. 1, 1 A of 1st heat insulation panels 1A are the waterproof sheet sticking parts 9 of the structure (shape) similar to the waterproof sheet sticking part 9 of the 2nd heat insulation panel 1B in the outer edge part 13 of a downstream. It is preferable to have. Moreover, the 2nd heat insulation panel 1B also has the waterproof sheet sticking part 8 of the structure (shape) similar to the waterproof sheet sticking part 8 of 1A of 1st heat insulation panels in the outer edge part 14 of an upstream. preferable. Thereby, a common (same) heat insulation panel can be used as 1st heat insulation panel 1A and 2nd heat insulation panel 1B.

Second Embodiment
FIG. 3 is a vertical sectional view showing a second embodiment of the heat insulation panel and waterproof structure of the present invention.

  Hereinafter, the second embodiment of the heat insulation panel and waterproof structure of the present invention will be described with reference to this figure, but the description will focus on the differences from the above-described embodiment, and the description of the same matters will be omitted.

  The present embodiment is the same as the first embodiment except that the shape (configuration) of the joint is different.

  As shown in FIG. 3, in the present embodiment, the joint 6 of the first heat insulation panel 1A has a flat shape, and the joint 7 of the second heat insulation panel 1B also has a flat shape. And the junction part 6 and the junction part 7 are comprised so that it may mutually oppose and may be joined by abutment. With this configuration, when the gap 20 must be generated between the outer edge portion 11 of the first heat insulation panel 1A and the outer edge portion 12 of the second heat insulation panel 1B, the size of the gap 20 can be adjusted. it can. Thereby, smooth construction becomes possible.

  As mentioned above, although the heat insulation panel and waterproof structure of this invention were demonstrated about embodiment of illustration, this invention is not limited to this, Each part which comprises a heat insulation panel and a waterproof structure exhibits the same function. It can be replaced with any configuration obtained. Moreover, arbitrary components may be added.

  Further, the heat insulating panel and the waterproof structure of the present invention may be a combination of any two or more configurations (features) of the above embodiments.

  Moreover, as a construction place of a heat insulation panel and a waterproof structure, although it was the floor of the veranda in each said embodiment, it is not limited to this, A roof etc. may be sufficient.

  Moreover, although the 1st heat insulation panel and the 2nd heat insulation panel are in the state which the gap | interval produced between the outer edge parts in each said embodiment, it is not limited to this, The outer edge parts are contacting. Also good.

  In addition, the waterproof sheets are applied one by one in each of the above embodiments. For example, when applying a plurality of waterproof sheets, the thickness t when calculating D / t is a plurality of sheets. The total thickness of the waterproof sheet is used.

DESCRIPTION OF SYMBOLS 10 Waterproof structure 1A 1st heat insulation panel 1B 2nd heat insulation panel 11, 12, 13, 14 Outer edge part 2 Waterproof sheet 3 Resin layer 4a Metal layer 4b Metal layer 5a Resin layer 5b Resin layer 6 Joint part 7 Joint part 8 Waterproof sheet sticking spotted portion 81 bottom portion 82 side wall portion 9 waterproof sheet sticking portion 91 bottom portion 92 side wall portion 20 gap 100 veranda D _{8, D 9} depth t ₂ thickness W _{81, W 91} width θ _1, θ _82, θ ₉₂ angle of inclination

Claims (14)

It is a heat insulation panel that is installed side by side with a plurality of heat insulation panels,
The outer edge portion has a joint portion to be joined with another heat insulation panel which is one heat insulation panel among the plurality of heat insulation panels,
Having a waterproof sheet attaching part to which a waterproof sheet covering the joint part together with the other heat insulating panel is attached;
The waterproof sheet attaching part is composed of a concave part having a bottom part,
A heat insulating panel, wherein D / t is 0.5 or more and 2.0 or less, where D is the depth to the bottom of the recess and t is the thickness of the waterproof sheet.   The heat insulation panel according to claim 1 whose width of said bottom is 40 mm or more and 200 mm or less.   The thermal insulation panel according to claim 1 or 2, wherein the concave portion has a side wall portion standing from the bottom portion and inclined with respect to the bottom portion.   The heat insulation panel according to any one of claims 1 to 3, wherein the joint portion is configured to be joined to the other heat insulation panel by fitting.   The heat insulation panel according to any one of claims 1 to 3, wherein the joint portion is configured to be joined to the other heat insulation panel by abutment. The heat insulation panel is constructed in an inclined posture,
The heat insulation panel according to any one of claims 1 to 5, wherein the recess extends in a direction intersecting with an inclination direction of the heat insulation panel.   The heat insulation panel according to any one of claims 1 to 6, wherein the thickness t is 1.0 mm or more and 2 mm or less. A first insulation panel;
A second heat insulating panel joined side by side with the first heat insulating panel;
A waterproof structure comprising a waterproof sheet covering a joint portion between the first heat insulation panel and the second heat insulation panel,
Each of the first heat insulation panel and the second heat insulation panel has a waterproof sheet attaching portion to which the waterproof sheet is attached,
The waterproof sheet attaching part is composed of a concave part having a bottom part,
A waterproof structure, wherein D / t is 0.5 or more and 2.0 or less, where D is the depth to the bottom of the recess and t is the thickness of the waterproof sheet.   The waterproof structure according to claim 8, wherein a width of the bottom portion is 40 mm or more and 200 mm or less.   The waterproof structure according to claim 8 or 9, wherein the concave portion has a side wall portion standing from the bottom portion and inclined with respect to the bottom portion.   The waterproof structure according to claim 8, wherein the joint portion is configured to be joined by fitting.   The waterproof structure according to claim 8, wherein the joint portion is configured to be joined by abutment. The first heat insulation panel and the second heat insulation panel are each constructed in an inclined posture,
The waterproof structure according to any one of claims 8 to 12, wherein the recess extends in a direction intersecting with an inclination direction of the first heat insulation panel and the second heat insulation panel.   The waterproof structure according to claim 8, wherein the thickness t is not less than 1.0 mm and not more than 2 mm.

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