JP2023160546A - Ventilation sheet installation method, and ventilation structure of building - Google Patents

Abstract

To provide an installation method of a ventilation sheet which can prevent the ventilation sheet from being curved or can easily position the ventilation sheet.SOLUTION: In an installation method of a ventilation sheet of the present invention, a ventilation sheet forming a ventilation path between an installation surface of a building and itself once installed on the installation surface of the building is installed on the installation surface of the building. The installation method of the ventilation sheet comprises a first insulation material installation step of arranging a plurality of first insulation materials on the installation surface of the building at an interval and fixing the plurality of first insulation materials on the installation surface of the building, a ventilation sheet installation step of installing the ventilation sheet on the installation surface of the building at an area formed among the plurality of first insulation materials installed at an interval and a second insulation material installation step of fixing a second insulation material to adjacent first insulation material while installing the second insulation material on the installed ventilation sheet, and pushing the ventilation sheet to the installation surface of the building.SELECTED DRAWING: Figure 12

Description

The present invention relates to a ventilation sheet installation method for installing a ventilation sheet on the surface of a building, and to a ventilation structure for a building.

Conventional structures such as rooftops of reinforced buildings often have a waterproof layer constructed on a concrete base using an insulating mechanical fixing method. However, in the case of the above structure, there is a risk that dew condensation may occur on the back surface of the waterproof layer due to the temperature difference between the outside air and the concrete base. As this condition progresses, a moisture layer forms between the concrete base and the waterproof layer. As the concrete base deteriorates over time, water enters through cracks in the concrete base, causing rain leaks, mold, and condensation inside the building. In addition, the waterproof layer itself has cracks due to aging, and water (for example, rainwater) has entered through the cracks. Similar to the above, this phenomenon also causes rain leaks, mold, and dew condensation inside the building.

In order to solve the above problems, the inventor of the present invention has proposed a moisture removal device that efficiently transfers moisture contained in a building as steam and discharges it to the outside (for example, see Patent Document 1). . The moisture removal device has a plurality of convex portions on the installation surface, and is configured to make a space formed by the surface of the building, which is the installation surface, and the installation surface having the plurality of convex portions, into a steam passage. a convex member configured to have a heat insulating material installed on the upper surface of the convex member; and a heat insulating material installed on the upper surface of the convex member; and an intake section for discharging vaporized moisture to the outside.

When the convex member in the water removal device is configured as a ventilation sheet with band-shaped convex portions made of resin such as polypropylene, the ventilation sheet is carried to the construction site in the form of a rolled body. At the construction site, the required length of ventilation sheet is pulled out from the roll and cut. Then, ventilation sheets cut to appropriate lengths are arranged in order from the edge of the construction target area of the building and spread over the entire construction target area.

Japanese Patent Application Publication No. 2012-140801

However, when the ventilation sheet is wound into a roll, the ventilation sheet tends to be curved. Furthermore, when the outside temperature is high, the ventilation sheet is likely to warp and curve due to the heat generated therefrom. In the moisture removal device, the heat insulating material is placed on the ventilation sheet, but is not configured to limit the curvature of the ventilation sheet. In addition, if the construction target area of the building is large, if an external force is applied to an adjacent ventilation sheet in the direction along the installation surface while the ventilation sheets are being lined up, the ventilation sheets may be misaligned and the positioning may be difficult. was troublesome.

In view of such circumstances, the present invention provides at least one of a method for installing a ventilation sheet that can limit the curvature of the ventilation sheet, a method for installing a ventilation sheet that allows easy positioning of the ventilation sheet, and a method for restricting the curvature of the ventilation sheet. The aim is to provide a ventilation structure for buildings that is possible.

The present invention has been made to solve the above problems, and the ventilation sheet installation method of the present invention provides a ventilation sheet that, when installed on the installation surface of a building, forms a ventilation path between the ventilation sheet and the installation surface of the building. A ventilated sheet installation method comprising installing a sheet on an installation surface of the building, the method comprising: installing a plurality of first insulation materials at intervals on the installation surface of the building; a first insulation material installation step of fixing the material; and a ventilation sheet installation step of installing the ventilation sheet on the installation surface of the building in an area formed between the plurality of first insulation materials installed at intervals. a step of: installing a second heat insulating material on the installed ventilation sheet, fixing the second heat insulating material to the adjacent first heat insulation material, and pressing the ventilation sheet against the installation surface of the building; A second heat insulating material installation step. According to the ventilation sheet installation method described above, it is possible to limit the curvature of the ventilation sheet.

In the ventilation sheet installation method of the present invention, the ventilation sheet has a plurality of convex portions distributed on at least one plane, and in the ventilation sheet installation step, the ventilation sheet has a plurality of convex portions distributed in the area where the ventilation sheet is installed. The ventilation sheet is installed so as to be in contact with a surface, and the ventilation path is formed between one of the planes of the ventilation sheet and the installation surface of the building.

Further, in the ventilation sheet installation method of the present invention, in the first insulation material installation step, at least some of the plurality of first insulation materials are spaced apart along the first direction along the installation surface of the building. A row (hereinafter referred to as a first direction row) of the first heat insulating material is installed on the installation surface of the building and extends along the first direction, and a plurality of the first direction rows are provided in parallel. It is characterized by being installed as follows.

Further, in the ventilation sheet installation method of the present invention, in the first insulation material installation step, at least some of the plurality of first insulation materials are spaced apart between adjacent rows in the first direction, The ventilation sheet is installed so that a first extension region extending along the first direction is formed between adjacent rows in the first direction, and in the ventilation sheet installation step, the first extension region includes the It is characterized by the installation of a ventilation sheet.

Further, in the ventilation sheet installation method of the present invention, in the first heat insulation material installation step, at least some of the plurality of first heat insulation materials are arranged along the installation surface of the building and perpendicular to the first direction. A row (hereinafter referred to as a second direction row) of the first heat insulating material is installed along the second direction and is installed on the installation surface of the building at intervals along two directions, and the second row It is characterized in that it is installed so that a plurality of direction rows are provided in parallel.

Further, in the ventilation sheet installation method of the present invention, in the first insulation material installation step, at least some of the plurality of first insulation materials are spaced apart between adjacent rows in the second direction, A first extending region extending along the second direction between adjacent second direction rows and having an overlapping region that intersects with the first extending region and overlaps the first extending region at the intersecting portion. The ventilation sheet is installed so that two extending regions are formed, and in the ventilation sheet installation step, the ventilation sheet is installed in the second extending region.

Further, in the ventilation sheet installation method of the present invention, the ventilation sheet is configured in a band shape having a constant sheet width and is wound in a roll shape, and the ventilation sheet is in a rolled state. A ventilating sheet processing step in which the ventilating sheet is pulled out from the ventilating sheet and cut at a predetermined length position while the width of the ventilating sheet remains constant to provide the ventilating sheet in the form of a belt to be installed in the first extension area. further comprising, when the direction in which the second heat insulating material is stacked on the ventilation sheet is defined as the stacking direction, in the first heat insulating material installation step, when the first extending region is viewed in plan from the stacking direction, A plurality of the first heat insulating materials are installed on the installation surface of the building so that the first extending region is a belt-shaped region having a constant width and matching the sheet width of the ventilation sheet. do. According to the ventilation sheet installation method described above, positioning of the ventilation sheet is facilitated.

Further, in the ventilation sheet installation method of the present invention, the second insulation material is configured to have a constant width while having a width that matches the sheet width of the ventilation sheet, and in the second insulation material installation step, A plurality of the second heat insulating materials are installed so that the first heat insulating materials and the second heat insulating materials are spread over the upper layer side of the ventilation sheet.

Further, in the ventilation sheet installation method of the present invention, the first insulation material, the second insulation material, and the ventilation sheet are such that the sum of the thickness of the ventilation sheet and the thickness of the second insulation material is the thickness of the first insulation material. When the second insulating material is installed in the second insulating material installation step, the surface of the second insulating material opposite to the side facing the ventilation sheet and the first The first heat insulating material installed in the heat insulating material installation step is characterized in that a surface opposite to a side facing the installation surface of the building is on the same plane.

Further, the ventilation sheet installation method of the present invention includes installing a ventilation sheet on the installation surface of a building, which forms a ventilation path between the ventilation sheet and the installation surface of the building when installed on the installation surface of the building. a first member installation step of installing a plurality of first members at intervals on the installation surface of the building and fixing the plurality of first members to the installation surface of the building; and installing at intervals. The invention is characterized by comprising a ventilation sheet installation step of installing the ventilation sheet on an installation surface of the building in a region formed between the plurality of first members. According to the ventilation sheet installation method described above, positioning of the ventilation sheet is facilitated.

Further, in the ventilation sheet installation method of the present invention, a second member is installed on the installed ventilation sheet, and the second member is fixed to the adjacent first member, so that the ventilation sheet is attached to the building. It is characterized by further comprising a second member installation step of pressing the second member against the installation surface. According to the ventilation sheet installation method described above, it is possible to easily position the ventilation sheet and to further restrict the curvature of the ventilation sheet.

Further, the ventilation structure for a building of the present invention includes a plurality of first members installed at intervals on an installation surface of a building and fixed to the installation surface of the building, and a plurality of first members installed at intervals. a ventilation sheet that is installed on the installation surface of the building in a region between the two members and forms a ventilation path between the construction surface and the installation surface of the building; a second member that is fixed and presses the ventilation sheet, the ventilation sheet having a plurality of convex portions distributed on at least one plane, and the convex portions being in contact with the installation surface of the building. It is characterized in that it is installed to form the ventilation path between it and the installation surface of the building.

Further, in the ventilation structure for a building according to the present invention, a surface of the first member opposite to the side facing the installation surface of the building and a surface of the second member opposite to the side facing the ventilation sheet. , are on the same plane, and the installation surface of the building is covered with the first member, the ventilation sheet, and the second member. Further, in the ventilation structure for a building according to the present invention, the first member and the second member are heat insulating materials.

According to the ventilation sheet installation method of the present invention, positioning of the ventilation sheet can be facilitated and/or curvature of the ventilation sheet can be restricted. Moreover, according to the ventilation structure for a building of the present invention, the curvature of the ventilation sheet can be restricted.

(A) is a sectional view of a ventilation structure of a building in an embodiment of the present invention. (B) and (C) are cross-sectional views of modified examples of the first heat insulating material and the second heat insulating material of the ventilation structure of the building in the embodiment of the present invention. FIG. 3 is a plan view of the first heat insulating material, which forms part of the ventilation structure of the building, installed on the roof of the building according to the embodiment of the present invention. (A) to (D) are plan views showing modified examples of the arrangement of the first heat insulating material, which forms part of the ventilation structure of the building, on the roof surface of the building in the embodiment of the present invention. (A) is a perspective view of a ventilation sheet forming a part of the ventilation structure of a building in an embodiment of the present invention. (B) is a plan view of a ventilation sheet forming a part of the ventilation structure of a building in an embodiment of the present invention. (A) is a cross-sectional view of a ventilation sheet forming part of the ventilation structure of a building in an embodiment of the present invention, and is a cross-sectional view taken along the line FF in the dotted line region R in FIG. 4(A). (B) is a sectional view of a first modified example of a ventilation sheet forming a part of the ventilation structure of a building in an embodiment of the present invention. (C) is a sectional view of a second modified example of the ventilation sheet forming a part of the ventilation structure of the building in the embodiment of the present invention. FIG. 2 is a plan view when a first heat insulating material and a ventilation sheet forming part of the ventilation structure of a building according to an embodiment of the present invention are installed on the roof surface of a building. (A) is a perspective view showing how ventilation sheets forming a part of the ventilation structure of a building are overlapped in an embodiment of the present invention. (B) is a perspective view when the convex part of the ventilation sheet which forms a part of the ventilation structure of the building in embodiment of this invention is inserted into the recessed part of the ventilation sheet. (B) is a cross-sectional view when the convex part of the ventilation sheet forming a part of the ventilation structure of the building according to the embodiment of the present invention is inserted into the recessed part of the ventilation sheet. FIG. 6 is a plan view of a first heat insulating material and a ventilation sheet that form part of the ventilation structure of a building in an embodiment of the present invention, which are installed on the roof of a building in a different arrangement from that shown in FIG. 5; (A) is a sectional view when a first heat insulating material and a ventilation sheet forming part of a ventilation structure of a building according to an embodiment of the present invention are installed on the roof surface of a building. (B) is a cross-sectional view when the first heat insulating material, the ventilation sheet, and the second heat insulating material forming part of the ventilation structure of the building according to the embodiment of the present invention are installed on the roof surface of the building. FIG. 2 is a plan view when a first heat insulating material and a second heat insulating material, which form part of the ventilation structure of a building according to an embodiment of the present invention, are installed on the roof surface of a building. (A) is a sectional view of a ventilation structure of a building in an embodiment of the present invention. (B) is a sectional view of a modified example of the ventilation structure of a building in the embodiment of the present invention. (A) to (D) are cross-sectional views chronologically illustrating how to install a ventilation sheet in an embodiment of the present invention. FIG. 2 is a perspective view showing a roll body in which a ventilation sheet is wound into a roll shape and a ventilation sheet cut from the roll body in an embodiment of the present invention. It is a sectional view of a modification of the ventilation structure of a building in an embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 12 are examples of embodiments of the invention, and in the drawings, parts denoted by the same reference numerals as in FIG. 1 represent the same parts. Further, FIGS. 1 to 12 are schematic diagrams for explaining the present invention, and the thickness of each part is not accurate, and the scope of the present invention includes devices having various thicknesses.

<Overall configuration of ventilation structure>
The ventilation structure 1 of the building 900 in the embodiment of the present invention will be described. The ventilation structure 1 of the building 900 in this embodiment is provided with a ventilation path for ventilation on the installation surface of the building 900 on which the ventilation structure 1 is installed. In this embodiment, the building 900 is a concrete building with a flat roof, and the installation surface of the building 900 will be described as the roof surface 910 of the building 900 shown in FIG. 1. However, the installation surface of the building 900 includes not only the exterior side of the building 900 but also the interior side of the building 900 such as the wall of the building 900, the inside of the wall, the floor, and the inside of the floor. Therefore, the following description of the ventilation structure 1 of the building 900 using the roof surface 910 of the building 900 can also be applied to other installation surfaces of the building 900 by replacing the explanation with other installation surfaces of the building 900.

As shown in FIG. 1(A), the ventilation structure 1 provided in the building 900 includes a first insulation material 2, a ventilation sheet 3, a second insulation material 4, a heat shielding layer 5, a waterproof sheet 6, Equipped with Note that the first heat insulating material 2, the ventilation sheet 3, and the second heat insulating material 4 constitute a heat insulating layer. Note that the heat insulating layer may be read as a heat insulating ventilation layer having not only a heat insulation function but also a ventilation function.

<First insulation material>
The first heat insulating material 2 will be explained with reference to FIGS. 1 and 2. The first heat insulating material 2 includes a material having heat insulating properties. Examples of the material having heat insulating properties include glass wool, rock wool, cellulose fiber, insulation board, extruded foam polystyrene, bead-processed polystyrene, rigid urethane foam, and highly expanded polyethylene. In this embodiment, the first heat insulating material 2 has a rectangular parallelepiped shape, but is not limited to this, and may have other shapes.

Moreover, the first heat insulating material 2 may be configured by stacking ventilation sheets 3, as shown in FIGS. 1(B) and 1(C). As shown in FIG. 1(B), the top portions 32A of the convex portions 32 of the ventilation sheet 3 may be stacked so as to contact the flat surface (back surface) 33 of the ventilation sheet 3, or as shown in FIG. 1(C), Alternatively, the convex directions of both convex portions 32 may be opposite to each other, and the ventilated sheets 3 may be stacked so that their flat surfaces (back surfaces) 33 are in contact with each other. Note that details of the ventilation sheet 3 will be described later.

There are a plurality of first heat insulating materials 2, and they are installed on the roof surface 910 of the building 900 at intervals. Then, the plurality of first heat insulating materials 2 are fixed to the roof surface 910 by fixing means (not shown). Examples of the fixing means include adhesives and anchor bolts. If the fixing means is an anchor bolt, the anchor bolt penetrates the first heat insulating material 2 and is inserted into a hole made in the roof surface 910. However, it is necessary to drill holes for anchor bolts on the roof surface 910, but this creates noise. On the other hand, if the fixing means is adhesive, no noise will be generated during construction, so adhesive is preferable as the fixing means from the viewpoint of silent construction. Note that the adhesive includes all adhesives that can bond the first heat insulating material 2 to the installation surface of the building 900.

As shown in FIG. 2, in this embodiment, the plurality of first heat insulating materials 2 are installed at intervals on the rooftop surface 910 of the building 900 along the first direction A along the rooftop surface 910 of the building 900. . As a result, a row 20 (hereinafter referred to as a first direction row) of a plurality of first heat insulating materials 2 along the first direction A is provided. In addition, in FIG. 2, the first direction row 20 refers to a row of a plurality of first heat insulating materials 2 lined up at intervals along the first direction A in a region surrounded by a thin dotted line. In this embodiment, adjacent first heat insulating materials 2 in the first direction row 20 are arranged at regular intervals, but the invention is not limited to this, and as shown in FIG. In 3(A), Y1>Y2) may be arranged. Incidentally, in this embodiment, the first direction A is assumed to be either the girder direction (girder row direction) or the beam direction (beam-to-beam direction) of the building 900, but is not limited to this. It may be in any other direction.

As shown in FIG. 2, a plurality of first direction rows 20 are provided in parallel. That is, a plurality of first direction rows 20 are provided in parallel along the roof surface 910 of the building 900 and along the second direction B orthogonal to the first direction A. At this time, in this embodiment, a plurality of first heat insulating materials 2 are arranged at intervals on the roof surface 910 of the building 900 along the second direction B, and rows along the second direction B (hereinafter referred to as "second direction ) 21 is formed. In addition, in FIG. 2, the second direction row 21 refers to a row of a plurality of first heat insulating materials 2 lined up at intervals along the second direction B in a region surrounded by a thin dotted chain line. Incidentally, in this embodiment, the second direction B is the beam direction (beam direction) if the first direction A is the beam direction (girder row direction) of the building 900, and the first direction A is the beam direction (beam direction) of the building 900. direction), it is assumed that it is the column direction (column direction), but it is not limited to this, and other directions may be used.

Note that, as shown in FIG. 3B, a plurality of first direction rows 20 may be provided in parallel on the roof surface 910 of the building 900 along the second direction B without leaving any intervals. However, when the first direction columns 20 are viewed from the column direction (column row direction) in FIG. will be placed in

Further, in this embodiment, the second direction row 21 is installed such that all the first heat insulating materials 2 overlap when the second direction row 21 is viewed from the second direction B, as shown in FIG. However, the present invention is not limited to this, and as shown in FIG. 3(C), when the second direction row 21 is viewed from the second direction B, a portion 210 of each first insulating material 2 may overlap. At least a portion of the first heat insulating material 2 may be installed shifted in the first direction A. This also applies to the first direction row 20, and when the first direction row 20 is viewed from the first direction A, at least one of the first heat insulating materials 2 is arranged so that a portion of each first heat insulating material 2 overlaps. The portions may be installed offset in the second direction B.

In this embodiment, adjacent first heat insulating materials 2 in the second direction row 21 are arranged at equal intervals, but the invention is not limited to this, and as shown in FIG. In 3(A), X1>X2) may be arranged. Further, in this embodiment, the interval between adjacent first insulating materials 2 in the second direction row 21 is the same as the interval between adjacent first insulating materials 2 in the first direction row 20, as shown in FIG. Although the size is not limited to this, the size may be different (X3>Y3 in FIG. 3(D)). Note that W is assumed to have a length in the range of, for example, 1000 to 2000 (mm), and is particularly preferably about 1250 (mm). At this time, the width of the first heat insulating material 2 is assumed to be in the range of 500 to 1000 (mm). However, the above lengths are merely examples, and lengths other than the above are also included in the scope of the present invention.

That is, in this embodiment, the plurality of first heat insulating materials 2 are arranged on the roof surface 910 of the building 900 at intervals (equally spaced in FIG. 2) along the first direction A and/or the second direction B. For example, they may be arranged in any way, and various arrangements are included in the present invention.

When the plurality of first heat insulating materials 2 are arranged as described above, since the adjacent first direction rows 20 are arranged with an interval between them, there is a space between the adjacent first direction rows 20. A first extension region 23 extending along direction A is formed. As shown in FIG. 1(A) and FIG. 2, the first extension region 23 includes each opposing surface 2D (first Among the side surfaces 2C of the heat insulating material 2, the boundaries in the width direction of the first extension region 23 are defined by the side surfaces 2CA. That is, the first extension region 23 has its own boundary in the width direction defined by the adjacent first direction rows 20 . In the present embodiment, the first extending region 23 extends along the first direction A, and has a constant width when viewed from the stacking direction of the ventilation structure 1 (see direction S in FIG. 1(A)). However, the present invention is not limited to this, and the region may have other forms. That is, in this embodiment, the first extension region 23 becomes a rectangular parallelepiped three-dimensional region. Incidentally, in FIG. 2, the first extension area 23 refers to an area surrounded by a thin dotted line beside the first direction row 20. Further, the lamination direction of the ventilation structure 1 refers to the direction in which the heat insulation layer (first insulation material 2, ventilation sheet 3, second insulation material 4), heat shielding layer 5, and waterproof sheet 6 are laminated, and the ventilation structure 1 corresponds to the thickness direction. Then, as described later, the ventilation sheet 3 is installed in the first extension region 23. In this sense, the plurality of first direction rows 20 function to position the ventilation sheet 3.

Further, since the adjacent second direction rows 21 are arranged with a space between them, a second extension region 24 extending along the second direction B is formed between the adjacent second direction rows 21. Ru. As shown in FIG. 2 , the second extension region 24 is formed on each opposing surface 2E (first heat insulation Among the side surfaces 2C of the material 2, the boundaries in the width direction of the second extension region 24 are defined by the side surfaces 2CB. In other words, the second extending region 24 has its own boundary in the width direction defined by the adjacent second direction rows 21 . In the present embodiment, the second extending region 24 extends along the second direction B and becomes a strip-shaped region having a constant width when viewed from the stacking direction of the ventilation structure 1, but is not limited to this. It is not limited to this, but it may be a region of other embodiments. That is, in this embodiment, the second extension region 24 is a three-dimensional region in the shape of a rectangular parallelepiped. Incidentally, in FIG. 2, the second extension area 24 refers to an area surrounded by a thin two-dot chain line beside the second direction row 21. As will be described later, the ventilation sheet 3 is installed in the second extension region 24. In this sense, the plurality of second direction rows 21 function to position the ventilation sheet 3.

The first extending region 23 and the second extending region 24 intersect and have an overlapping region 25 that overlaps at the intersecting portion (position). Here, if the area formed between adjacent first heat insulating materials 2 in the second direction row 21 is defined as the first area 26 (see FIG. 2), the first area 26 and the overlapping area 25 are mutually They are arranged consecutively and alternately along the first direction A. The first extension region 23 is configured as a region in which first regions 26 and overlapping regions 25 are arranged alternately. Furthermore, when the region formed between adjacent first heat insulating materials 2 in the first direction row 20 is defined as the second region 27 (see FIG. 2), the second region 27 and the overlapping region 25 are mutually continuous. While doing so, they are arranged alternately along the second direction B. The second extension region 24 is configured as a region in which second regions 27 and overlapping regions 25 are arranged alternately.

Note that the first extension region 23 does not need to extend linearly along the first direction A, as shown in FIG. 3(B). To give an example, for example, the first extension region 23 extends to one side in the first direction A while maintaining a constant width, and bends to one side in the second direction B in the middle. It may have a so-called zigzag shape, in which it repeatedly extends to one side, bends halfway to one side in the first direction A, and then extends to one side in the first direction A. Similarly, as shown in FIG. 3C, the second extension region 24 may also extend in a zigzag shape along the second direction B.

<Vent sheet>
The ventilation sheet 3 will be explained with reference to FIGS. 4 and 5. The ventilation sheet 3 has a plurality of protrusions 32 on one plane 31 side of the ventilation sheet 3 (sheet portion 30), as shown in FIGS. 4(A) and 4(B). Specifically, the ventilation sheet 3 has a sheet-like sheet portion 30 and a convex portion 32 . As shown in FIG. 5(A), the convex portion 32 is a convex portion starting from one plane 31 of the ventilation sheet 3 (sheet portion 30) in a direction away from the plane 31 (for example, a direction perpendicular to the plane 31). becomes. The height of the convex portion 32 is assumed to be, for example, about 0.1 mm to 5 mm, but is not limited to this. That is, the present invention also includes those in which the height of the convex portion 32 is 0.1 mm or less or 5 mm or more. The shape of the convex portion 32 is assumed to be an approximately conical shape or a partially conical shape such as a truncated cone shape, but is not limited to this, and may be a hemispherical shape, a hexagonal prism shape, etc. It's okay.

Further, as shown in FIGS. 4(A) and 5(A), the ventilation sheet 3 in this embodiment has a flat surface opposite to the side where the convex portions 32 of the ventilation sheet 3 (sheet portion 30) are provided. A recess 34 is provided on the 33 side. The concave portion 34 is provided at a position corresponding to the convex portion 32 on the plane 33 of the ventilation sheet 3 (sheet portion 30). That is, when the ventilation sheet 3 is viewed from above, the recesses 34 are included in and overlap the projections 32. The concave portion 34 is recessed in the convex direction of the convex portion 32 starting from the plane 33 on the opposite side to the side on which the convex portion 32 is provided. Examples of the shape of the recess 34 include a generally conical shape, a truncated conical shape, and a hemispherical shape. Note that the shapes of the convex portions 32 and the concave portions 34 may be other shapes other than those described above. Note that the ventilation sheet 3 may have a configuration without the recess 34, as shown in FIG. 5(B). Further, as shown in FIG. 5C, the ventilation sheet 3 may have a configuration in which parts with and without recesses 34 coexist.

Note that, as shown in FIGS. 1(B) and 1(C), when the ventilation sheets 3 are stacked so as to close the recess 34 and create a closed space, the air in the closed space does not flow. air exerts a heat insulating function. Taking advantage of such characteristics, the ventilation sheet 3 can constitute a heat insulating material.

Further, as shown in FIGS. 4A and 4B, the convex portions 32 are distributed on one plane 31 of the ventilation sheet 3 (sheet portion 30). One example is that the convex portions 32 are distributed approximately in a matrix on the one plane 31 side of the ventilation sheet 3, but the present invention is not limited to this, and other distribution modes may be used. The above-mentioned approximately matrix-like distribution also includes a distribution close to a matrix-like state that is randomly distributed in the vertical and horizontal directions. Note that in FIG. 4(B), the ventilation sheet 3 has a plurality of circular portions, each of which corresponds to a convex portion 32.

Further, the convex portion 32 may be integrally formed with the sheet portion 30 of the ventilation sheet 3, or may be configured as a separate member from the sheet portion 30 and connected to the sheet portion 30.

<Installation of ventilation sheet>
The manner in which the ventilation sheet 3 is installed will be explained with reference to FIGS. 1 to 5. The ventilation sheet 3 having the above configuration is installed so that the top portion 32A of each convex portion 32 comes into contact with the roof surface 910, as shown in FIG. 1(A). At this time, a ventilation path 100 is formed between the ventilation sheet 3 and the roof surface 910. Specifically, as shown in FIG. 1(A), the ventilation path 100 is composed of one plane 31 of the sheet portion 30 of the ventilation sheet 3, the surface 32B of each convex portion 32, and the roof surface 910. For example, moisture contained in the building 900 is vaporized, and the vapor passes through the space surrounded by the ventilation path 100 and passes between the protrusions 32 as shown by the arrows in FIG. 4(B). Moving.

As shown in FIGS. 4A and 5A, an external force (for example, a load due to a person's body weight, , 100 to 300 kg (100 to 300 kg)), the protrusion 32 needs to have such strength that it will not be crushed. From the viewpoint of strength, the material of the convex portion 32 and the sheet portion 30 is preferably made of resin such as polypropylene or metal, for example. Further, it is preferable that the arrangement of the convex portions 32 is determined in terms of the distribution of the convex portions 32, taking into account the above-mentioned strength and whether or not steam can flow efficiently.

The ventilation sheet 3 is installed so as to cover the first extension area 23 and the second extension area 24 of the roof surface 910 of the building 900, as shown in FIG. At this time, it is preferable that no gap be formed at the boundary between the adjacent ventilation sheet 3 and the first heat insulating material 2, or that even if a gap is formed, the gap is small. For example, as shown in FIG. 12, the ventilation sheet 3 is configured in advance as a belt-shaped sheet with convex portions 32 having a constant sheet width W, and the belt-shaped sheet with convex portions 32 is configured as a roll body 300 wound into a roll. In this case, as shown in FIG. 6, the first extending region 23 and the second extending region are strip-shaped regions having a constant width when viewed in plan from the stacking direction (perpendicular to the paper surface) of the ventilation structure 1. 24 preferably both have a width of W. With this configuration, when installing the ventilation sheet 3 so as to cover the first extension area 23 and the second extension area 24, the sheet width of the ventilation sheet 3 is constant W, so the sheet width of the ventilation sheet 3 is There is no need to perform processing such as changing the length, and it is only necessary to pull out the required length from the roll body 300 and cut it, so the number of work steps can be reduced. Note that the width of the first extension region 23 and the width of the second extension region 24 are not limited to these, and one of them may be W and the other may be different from W, or both may be W and the width of the second extension region 24 is W. May be different. Incidentally, the width of the first extending region 23 is the length of the first extending region 23 in the direction along the second direction B, and the width of the second extending region 24 is the length of the first extending region 23 in the direction along the first direction A. This is the length of the second extension region 24.

As shown in FIG. 6, the ventilation sheet 3 is pulled out from the roll body 300, and while maintaining the sheet width W, a belt-shaped sheet is cut at a length extending over the plurality of first regions 26 and the plurality of overlapping regions 25. When the ventilation sheet 3 (hereinafter appropriately referred to as the first ventilation sheet 3A) is installed in the first extension area 23, the ventilation sheet 3 can be installed without creating a gap between it and the first heat insulating material 2. I can do it. On the other hand, when the first ventilation sheet 3A is installed as described above, the first ventilation sheet 3A is already installed in the overlapping region 25 that also forms a part of the second extension region 24. Therefore, the vacant areas in the second extension area 24 are not continuous, but are the second areas 27 located at intervals. As shown in the second extension region 24A in the first stage of FIG. If a belt-shaped ventilation sheet 3 (hereinafter referred to as the second ventilation sheet 3B as appropriate) cut at the position is placed in each second region 27, the first extension region 23 and the second extension region 24 A ventilation sheet 3 can be installed throughout.

In addition, as shown in the second extension region 24B of the second stage in FIG. A belt-shaped ventilation sheet 3 (hereinafter referred to as a third ventilation sheet 3C as appropriate) is provided, which is cut at a length that overlaps a part of 3A (overlapping area 25), and the third ventilation sheet 3C is However, it may be installed so as to overlap a part of the adjacent first ventilation sheet 3A and fill the second region 27. Note that the third ventilation sheet 3C has a length that is an extension of the length in the longitudinal direction of the second ventilation sheet 3B. The region 35 where the first ventilation sheet 3A and the third ventilation sheet 3C overlap (hereinafter referred to as a sheet overlapping region) is an end region of the third ventilation sheet 3C, as shown in FIG. 7(A). It is provided by covering the end region of the first ventilation sheet 3A. In the sheet overlapping region 35, as shown in FIGS. 7(B) and 7(C), the first ventilated sheet is arranged such that the convex portion 32 of the third ventilated sheet 3C can be inserted into the recessed portion 34 of the first ventilated sheet 3A. It is preferable that the positions, sizes, and shapes of the convex portions 32 and concave portions 34 of the third ventilation sheet 3A and the third ventilation sheet 3C are configured. As a result of the configuration of the ventilation sheet 3 as described above, the thickness of the sheet overlapping region 35 can be reduced, and the first ventilation sheet 3A and the third ventilation sheet 3C engage with each other, thereby restricting their relative movement. can do.

In addition, as shown in the second extending region 24C in the third stage of FIG. A belt-shaped ventilation sheet 3 (hereinafter appropriately referred to as the fourth ventilation sheet 3D) cut at a length spanning 25 is provided, and overlaps with the first ventilation sheet 3A installed in the first extension area 23. The fourth ventilation sheet 3D may be installed in the second extension region 24 so as to overlap in the entire region 25. With this configuration, the number of ventilation sheets 3 to be prepared is reduced compared to the case of the second ventilation sheet 3B and the third ventilation sheet 3C, so the number of work steps for cutting the ventilation sheets 3 is reduced. can do. In addition, in the sheet overlapping region 35, the convex portions 32 and the concave portions 34 of the first ventilation sheet 3A and the fourth ventilation sheet 3D are arranged so that the convex portions 32 of the fourth ventilation sheet 3D can be inserted into the concave portions 34 of the first ventilation sheet 3A. If the position, size, and shape are configured, the thickness of the sheet overlapping region 35 can be reduced, and the first ventilation sheet 3A and the fourth ventilation sheet 3D engage with each other, thereby restricting their relative movement. can do.

In addition, as shown in FIG. 8, the ventilation sheet 3 is pulled out from the roll body 300 and cut at a length extending over the plurality of second regions 27 and the plurality of overlapping regions 25 while maintaining the sheet width W. A belt-shaped ventilation sheet 3 may be installed in the second extension region 24. For the remaining plurality of first regions 26, the ventilation sheets 3 can be installed following the aspects of the present embodiment described above (three types of arrangement modes of the ventilation sheets 3 with respect to the second extension region). can.

As shown in FIG. 6, the entrance and exit of the ventilation path 100, which is provided by the cooperation of the ventilation sheet 3 installed as described above and the roof surface 910, is the entrance of the ventilation path 100 located at the outer edge of the ventilation structure 1 of the building 900. It is formed by an opening 130 and an opening 140 provided at the end. That is, the ventilation path 100 is opened to the outside through the opening 130 and the opening 140. In FIG. 6, only one opening 130 and one opening 140 are shown as entrances and exits of the ventilation path 100, but the invention is not limited to this. One or more may be provided at the other ends of the sheet 3 as well.

Note that, instead of or in addition to the openings 130 and 140, at least one hole 37 passing through the ventilation sheet 3 in the thickness direction may be provided and used as an entrance/exit of the ventilation path 100. Further, on the upper layer side than the ventilation sheet 3, there is an external open side ventilation path that penetrates the upper layer side part (second insulation material 4, heat shielding layer 5, waterproof sheet 6) than the ventilation sheet 3 and is open to the outside air. 150 (see FIG. 1) is provided. The hole 37 is continuous with the external open air passage 150. As a result, the air passage 100 communicates with the outside through the external open side air passage 150. Note that at least one portion corresponding to the inlet and outlet of the ventilation path 100 is provided. Portions corresponding to the inlet and outlet of the air passage 100 are configured by at least two of the plurality of openings 130, the plurality of openings 140, the plurality of holes 37, and the external open side air passage 150 corresponding to the plurality of holes 37. be done.

In addition, an air intake device or a blower device (not shown) including a fan may be introduced into either the inlet or the outlet of the air passage 100 to forcibly generate an air flow within the air passage 100. Good too. In any case, as long as there are at least two portions corresponding to the inlet and outlet of the ventilation path 100, air flow can be generated within the ventilation path 100. It is preferable to be configured to have the following.

Furthermore, each first extension region 23 and each second extension region 24 are configured to be continuous in each overlap region 25. Therefore, the ventilation path 100 continuously expands in a mesh pattern and is connected throughout the roof surface 910. As a result, all the ventilation passages 100 are opened to the outside through the entrances and exits of the ventilation passages 100, and steam flowing at any position in the ventilation passages 100 can also be discharged to the outside from the exits of the ventilation passages 100. . Note that the ventilation passage 100 includes a first ventilation passage piece (not shown) that constitutes a part of the ventilation passage 100, and a second ventilation passage piece (not shown) that constitutes the remainder of the ventilation passage 100 and is not connected to the first ventilation passage piece. (not shown). Even in this case, a first inlet and a first outlet connected to the first air passage piece and a second inlet and a second outlet connected to the second air passage piece may be provided. In other words, the air passage 100 includes a first air passage group consisting of a first air passage piece, a first inlet and a first outlet, and a second air passage group consisting of a second air passage piece, a second inlet and a second outlet. It may also be composed of air passage groups. Expanding the above, the scope of the present invention also includes a configuration in which the air passage 100 is further divided into a plurality of air passage groups.

In addition, as shown in FIG. 9(A), in this embodiment, the thickness T1 of the first heat insulating material 2 and the thickness T2 of the ventilation sheet 3 satisfy T1>T2. In this case, even if the ventilation sheet 3 is installed on the roof surface 910 of the building 900, the upper surface 2A of the first insulation material 2 and the plane 33 of the ventilation sheet 3 will not be on the same plane, and the first insulation material 2 and the ventilation sheet A step 200 is formed at the boundary of 3.

<Second insulation material>
The second heat insulating material 4 will be explained with reference to FIGS. 1, 2, 9, and 10. The second heat insulating material 4 includes a material having heat insulating properties. Examples of the material having heat insulating properties include glass wool, rock wool, cellulose fiber, insulation board, extruded foam polystyrene, bead-processed polystyrene, rigid urethane foam, and highly expanded polyethylene. Although the second heat insulating material 4 has a rectangular parallelepiped shape in this embodiment, it is not limited to this, and may have other shapes.

Further, the second heat insulating material 4 may be configured by stacking ventilation sheets 3, similarly to the first heat insulating material 2. The second heat insulating material 4 is preferably made of the same material as the first heat insulating material 2, but is not limited to this, and may be made of a different material from the first heat insulating material 2. .

The second heat insulating material 4 is installed on the upper surface (plane 33) of the ventilation sheet 3 installed in the first extension area 23 and the second extension area 24, as shown in FIG. 9(B). That is, the second heat insulating material 4 is installed on the upper surface (plane 33) of the ventilation sheet 3 in the first extension region 23 and the second extension region 24. At this time, the thickness T3 of the second heat insulating material 4 is preferably (T1-T2) so that the top surface 4A of the second heat insulating material 4 and the top surface 2A of the first heat insulating material 2 are on the same plane. Note that the upper surface 2A of the first heat insulating material 2 is the surface of the first heat insulating material 2 facing the opposite side to the side facing the installation surface of the building 900. Further, the upper surface 4A of the second heat insulating material 4 is the surface of the second heat insulating material 4 facing the side opposite to the side facing the ventilation sheet 3.

Further, as shown in FIG. 9(B), the second heat insulating material 4 has approximately the same width as the width W of the first extension region 23 and the second extension region 24, and may have a constant width. preferable. Note that in this case, the width of the second heat insulating material 4 also matches the sheet width of the ventilation sheet 3. The second heat insulating material 4 is fixed to a member around the second heat insulating material 4 (in this embodiment, the first heat insulating material 2) so that the relative position with respect to the first heat insulating material 2 is fixed. The relative position of the second heat insulating material 4 with respect to the first heat insulating material 2 is such that the lower surface 4B of the second heat insulating material 4 is in contact with the upper surface (plane 33) of the ventilation sheet 3, and the upper surface 4A of the second heat insulating material 4 is in contact with the upper surface 4A of the second heat insulating material 4. It is preferable that the upper surface 2A of the first heat insulating material 2 be on the same plane. When the second heat insulating material 4 is fixed to the first heat insulating material 2, the first heat insulating material 2 and the second heat insulating material 4 can be fixed using an adhesive such as an adhesive as the fixing means. The side surface 2B of the first heat insulating material 2 and the side surface 4C of the second heat insulating material 4 may be bonded to each other using a method of fixing them together. A mechanism may be formed, and the attachment/detachment mechanism may be used to fix the two, or a connecting member may be used as a separate fixing means to fix the two.

As described above, when the relative position of the second heat insulating material 4 with respect to the first heat insulating material 2 is fixed, the facing distance between the second heat insulating material 4 and the roof surface 910 becomes the thickness T2 of the ventilation sheet 3. There is no surplus space between the two heat insulating materials 4 and the roof surface 910 that is large enough to allow the ventilation sheet 3 to bend. As a result, the ventilation sheet 3 comes into contact with the second heat insulating material 4 and is pressed against the roof surface 910 by the second heat insulating material 4. Thereby, the ventilation structure 1 in this embodiment can limit the curvature of the ventilation sheet 3. However, since the second insulation material 4 is fixed to the first insulation material 2 and restricts the curvature of the ventilation sheet 3, the first insulation material 2 also cooperates with the second insulation material 4 to prevent the ventilation sheet 3 from bending. It can be seen as limiting the curvature. According to the ventilation structure 1 in this embodiment, a heat insulation structure can be formed while forming the ventilation path 100 on the roof surface 910. In that sense, the ventilation structure 1 may be read as a heat insulation ventilation structure.

Moreover, in this embodiment, the first heat insulating material 2 and the second heat insulating material 4 are in a state where they are spread over the ventilation sheet 3, as shown in FIG. That is, in the first extension region 23 and the second extension region 24, a plurality of second heat insulation materials 4 are spread so as to be continuous with the adjacent first heat insulation materials 2 and second heat insulation materials 4. At this time, it is preferable that the first and second heat insulating materials 2 and 4 adjacent to each other and the second heat insulating materials 4 adjacent to each other are continuous without any gaps. If the second heat insulating material 4 configured as described above is prepared in advance, the second heat insulating material 4 can be simply installed on the ventilation sheet 3, and the first heat insulating material 4 can be placed on the upper layer side of the ventilation sheet 3. and the second heat insulating material 4 can be laid all over. Note that the first insulating material 2 and the ventilation sheet 3 are spread over the roof surface 910 of the building 900 on the lower layer side than the second insulating material 4 . As a result, the roof surface 910 of the building 900 is covered with the first heat insulating material 2, the ventilation sheet 3, and the second heat insulating material 4. In the present invention, the spread state refers to a state in which the adjacent first insulating material 2 and second insulating material 4 and adjacent second insulating materials 4 are in direct contact at the boundary, and At least one of the first heat insulating material 2 and the second heat insulating material 4, and each of the adjacent second heat insulating materials 4 may be in indirect contact via a fixing means at the boundary. In particular, when using an adhesive such as an adhesive as a means of fixing the first and second heat insulating materials 2 and 4 adjacent to each other, and the second heat insulating materials 4 adjacent to each other, the adhesive such as adhesive is used at the boundary. The first heat insulating material 2 and the second heat insulating material 4 that are adjacent to each other and the second heat insulating materials 4 that are adjacent to each other indirectly contact each other.

<Heat shield layer, waterproof sheet>
The heat shield layer 5 and the waterproof sheet 6 will be described with reference to FIGS. 1 and 11. The heat shielding layer 5 blocks heat from the outside (radiant heat) from being transmitted to the first insulating material 2 and the second insulating material 4, and as shown in FIG. 1(A), the second insulating material 4 and It is provided above the heat insulating layer including the first heat insulating material 2. The heat shield layer 5 includes a heat shield sheet 51 and a ventilation sheet 3. The heat shield sheet 51 is, for example, one that reflects radiant heat. Examples of the heat shield sheet 51 include those made by laminating aluminum sheets, polyethylene films, etc., but are not limited thereto, and the present invention includes all other known heat shield sheets.

The ventilation sheet 3 is similar to that already described. The heat shielding sheet 51 is arranged so that one plane 51A thereof is in contact with the plane 33 of the ventilation sheet 3. Note that a plurality of heat shielding sheets 51 may be stacked. As shown in FIG. 11(A), the heat shielding layer 5 has a plane 51B opposite to the plane 51A of the heat shielding sheet 51 as the top surface 2A of the first heat insulating material 2 and the top surface of the second heat insulating material 4. It is installed so as to be in contact with 4A. Further, a waterproof sheet 6 is installed on the heat shield layer 5.

The waterproof sheet 6 is supported by the ventilation sheet 3 with one plane 6A of the waterproof sheet 6 in contact with the top 32A of the convex portion 32 of the ventilation sheet 3. At this time, a ventilation path 110 is formed between the waterproof sheet 6 and the ventilation sheet 3. The ventilation path 110 is composed of one plane 6A of the waterproof sheet 6, the plane 31 of the ventilation sheet 3, and the surface 32B of the convex portion 32. The space within the ventilation path 110 serves as an air layer of the heat shield sheet 51. Furthermore, in order to be opened to the outside, the ventilation path 110 has at least two openings (not shown) that are opened to the outside, similar to the ventilation path 100. Therefore, air flow occurs within the ventilation path 110. In particular, if air is forcibly circulated through the ventilation path 110 using a fan, the temperature within the ventilation path 110 can be reduced. This makes it possible to reduce the influence of temperature on the inside of the building due to radiant heat caused by sunlight and the like.

Further, as shown in FIG. 11(B), a ventilation sheet 3 may be additionally installed between the first heat insulating material 2, the second heat insulating material 4, and the heat shielding sheet 51. The ventilation sheet 3 is installed so that the top portion 32A of the convex portion 32 is in contact with the top surface 2A of the first heat insulating material 2 and the top surface 4A of the second heat insulating material 4. At this time, a ventilation path 120 is formed between the first heat insulating material 2, the second heat insulating material 4, and the heat shield sheet 51. The ventilation path 120 is composed of the flat surface 31 of the ventilation sheet 3, the surface 32B of the convex portion 32, the upper surface 2A of the first heat insulating material 2, and the upper surface 4A of the second heat insulating material 4. Further, the ventilation path 120 has at least two openings (not shown), similar to the ventilation path 100, in order to be open to the outside air. Therefore, air flow occurs within the ventilation path 120. In particular, if air is forcibly circulated through the ventilation path 120 using a fan, the temperature within the ventilation path 120 can be reduced. This makes it possible to further reduce the generation of radiant heat caused by sunlight and the like.

<How to install the ventilation sheet>
Referring to FIG. 12, a method for installing the ventilation sheet 3 in this embodiment on the roof surface 910 of the building 900 will be described below. First, as shown in FIG. 12(A), a plurality of first insulating materials 2 are installed at intervals on the roof surface 910 of the building 900 (first insulating material installation step). In this embodiment, as shown in FIG. 2, a plurality of first heat insulating materials 2 are installed so that a first direction row 20 and a second direction row 21 are formed. As a result, between the plurality of first heat insulating materials 2, there is a first elongated region that is a belt-shaped region having a constant width and the same width as the sheet width W of the ventilation sheet 3 when viewed from the stacking direction of the ventilation structure 1. A current area 23 and a second extension area 24 are provided. Note that the widths of the first extending region 23 and the second extending region 24 are not limited to the above, and may have other widths.

Note that the first heat insulating material 2 is fixed to the roof surface 910 using a fixing means (not shown). Examples of the fixing means include adhesives and anchor bolts. If the fixing means is an anchor bolt, it is necessary to drill a hole for the anchor bolt in the roof surface 910, but the drilling generates noise. On the other hand, if the fixing means is adhesive, no noise will be generated during construction, so adhesive is preferable as the fixing means.

Next, as shown in FIG. 12(B), the ventilation sheet 3 is installed in the first extension region 23 and the second extension region 24 (ventilation sheet installation step). In addition, as shown in FIG. 13, in this embodiment, the ventilation sheet 3 installed in the first extension area 23 and the second extension area 24 is pulled out to a desired length from the roll body 300 and cut. Create (ventilation sheet processing process). The cut ventilation sheet 3 is in the form of a band having a constant sheet width W. Note that in FIG. 13, the convex portions 32 of the ventilation sheet 3 are omitted.

The sheet width W of the ventilation sheet 3 is the same as the width of the first extension region 23 and the width of the second extension region 24. That is, in the first heat insulating material installation step, the width of the first extension region 23 and the width of the second extension region 24 are made to match the sheet width of the ventilation sheet 3, taking into consideration the sheet width of the ventilation sheet 3. A plurality of first heat insulating materials 2 are fixed to a roof surface 910 of a building 900 at intervals. Therefore, in this embodiment, there is no need to cut the ventilation sheet 3 to adjust the length in the sheet width direction, and only cutting to adjust the length of the ventilation sheet 3 in the sheet length direction is sufficient. Therefore, in this embodiment, the effort required to process the ventilation sheet 3 can be minimized, and work efficiency is improved. Conventionally, the ventilation sheets 3 have to be laid side by side from the edge of the rooftop surface 910, and when the installation area of the ventilation sheets 3 on the rooftop surface 910 is large, the ventilation sheets 3 adjacent to the ventilation sheets 3 must be laid in the direction of the installation surface while being arranged. When an external force is applied, the ventilation sheet 3 may be misaligned, making positioning difficult. According to the present embodiment, the first direction row 20 and the second direction row 21 prepare a place (the first extension region 23 and the second extension region 24) where one unit of the ventilation sheet 3 is installed. Positioning of the ventilation sheet 3 is easy.

When the ventilation sheet 3 is installed in the first extension area 23 and the second extension area 24, the surfaces of the first insulation material 2 and the ventilation sheet 3 have the first insulation A step 200 is formed due to the difference in thickness between the material 2 and the ventilation sheet 3. In order to eliminate this level difference 200, next, as shown in FIG. 12(C), the second heat insulating material 4 is installed on the upper surface (plane 33) of the ventilation sheet 3 (temporary installation step of the second heat insulating material installation step: (first step). When the second heat insulating material 4 is installed on the upper surface (plane 33) of the ventilation sheet 3, the upper surface 2A of the first heat insulating material 2 and the upper surface 4A of the second heat insulating material 4 become the same plane.

Moreover, the second heat insulating material 4 is installed in the entire first extending region 23 and second extending region 24 where the step 200 is formed. As shown in FIG. 12(C), the second heat insulating material 4 has a width W which is the same width as the first extending region 23 or slightly smaller than the first extending region 23. . Therefore, there is no gap between the installed second heat insulating material 4 and the first heat insulating material 2 adjacent on both sides, or even if there is a slight gap, it is possible to use adhesive means etc. described later. The gap will be filled. In other words, the installed second heat insulating material 4 is in contact with the upper surface (flat surface 33) of the ventilation sheet 3 on the lower surface, while leaving almost no gap between the side surface and the side surface 2C of the first heat insulating material 2. . At this stage, when looking at the rooftop surface 910 from the outside, the first insulating material 2 and the second insulating material 4 are spread over the entire rooftop surface 910 without any gaps.

Then, the second heat insulating material 4 installed on the upper surface (plane 33) of the ventilation sheet 3 is fixed to the adjacent first heat insulating material 2 (fixing step of the second heat insulating material installation step: second step). Thereby, the relative position of the second heat insulating material 4 with respect to the first heat insulating material 2 is fixed. As explained above, the fixing mode may be any of the following: fixing the two using an adhesive means, fixing the two using a detachable mechanism, or fixing the two using a separate connecting member. good. As described above, in the second heat insulating material installation step, the second heat insulating material 4 is installed on the installed ventilation sheet 3 (first step), and the installed second heat insulating material 4 is placed on the adjacent second heat insulating material 4. There is a fixing step (second step) of fixing to the heat insulating material 2. As a result, the facing distance between the second insulating material 4 and the roof surface 910 is the same as the thickness of the ventilation sheet 3, so that the distance between the second insulation material 4 and the roof surface 910 is as long as the ventilation sheet 3 can be bent. No surplus space is formed. Therefore, the ventilation sheet 3 is pressed against the roof surface 910 by the second heat insulating material 4. Thereby, the ventilation structure 1 in this embodiment can limit the curvature of the ventilation sheet 3.

In addition, when the fixing mode is a mode in which both are fixed using an adhesive means, the side surface 2B of the first heat insulating material 2 facing the first extension region 23 and the second extension region 24 side, or the first extension region When the second heat insulating material 4 is installed in the region 23 and the second extension region 24, an adhesive (not shown) is applied in advance to the side surface 4C of the second heat insulating material 4 facing the side surface 2B of the first heat insulating material 2. do. Then, when the second heat insulating material 4 is installed in the first extension region 23 and the second extension region 24, the first heat insulating material 2 and the second heat insulating material 4 are bonded to each other on the side surfaces, so the relative positions of the two are fixed. Ru. As a result, the ventilation sheet 3 is pressed and fixed against the roof surface 910 by the second heat insulating material 4. In this state, there is no space for the ventilation sheet 3 to curve in the space that accommodates the ventilation sheet 3, so the ventilation sheet 3 is restricted from curving. Note that the space accommodating the ventilation sheet 3 refers to a space surrounded by the side surfaces 2B of the two first insulators 2, the lower surface 4B of the second insulator 4, and the roof surface 910.

Finally, a heat shielding layer 5 is provided above the heat insulating layer constituted by the first heat insulating material 2, the second heat insulating material 4, and the ventilation sheet 3 (heat shield layer installation step). A waterproof sheet 6 is installed on the side (waterproof sheet installation step), and the ventilation structure 1 in this embodiment is completed.

In the above, the scope of the present invention includes expansion of the first heat insulating material 2 and the second heat insulating material 4 of the ventilation structure 1 into a first member and a second member, respectively. The first member and the second member are not limited to those intended for heat insulation. The first member functions as a region setting member for providing at least a first extension region 23 and a second extension region 24 in which the ventilation sheet 3 is installed. When the first extension region 23 and the second extension region 24 are provided on the installation surface of the building, positioning of the ventilation sheet 3 is easy. In particular, when using a belt-shaped ventilation sheet 3 having a constant width, the first extension area is Defining the boundaries between the region 23 and the second extension region 24 improves work efficiency. In that sense, the first member also functions as a region boundary defining member or a positioning member for the ventilation sheet 3.

On the other hand, the second member is installed on the ventilation sheet 3 and functions as a curvature limiting member that limits the curvature of the ventilation sheet 3 by pressing the ventilation sheet 3 against the installation surface. However, since the second member restricts the curvature of the ventilation sheet 3 while being fixed to the first member, the first member is also considered to function as a curvature limiting member in cooperation with the second member. let Further, the second heat insulating material 4 may be omitted, as in a modification of the ventilation structure 1 of this embodiment shown in FIG. 14. In this case, the first heat insulating material 2 and the ventilation sheet 3 have substantially the same thickness, and the upper surface 2A of the first heat insulating material 2 and the plane 33 of the ventilation sheet 3 are the same plane. The heat shielding layer 5 is configured to be adjacent to the ventilation insulation layer on the upper side than the ventilation insulation layer composed of the first insulation material 2 and the ventilation sheet 3, and is fixed by fixing means such as adhesive means to the first insulation insulation layer. While being fixed to the material 2, it comes into contact with the ventilation sheet 3 and presses the ventilation sheet 3 against the installation surface in cooperation with the first heat insulating material 2. The other configurations are the same as the ventilation structure 1 of this embodiment. In addition, in the case of this configuration, the first heat insulating material 2 can be considered as a first member, and the heat shielding layer 5 can be considered as a second member. Further, the heat shielding layer 5 as the second member is installed in an area outside the first extension area 23 and the second extension area 24. It should be noted that the first member and the second member are not limited to the first heat insulating material 2 and the heat shielding layer 5, respectively, and may be composed of other materials. All such configurations are included within the scope of the present invention.

For the first member and the second member, the explanation of the configuration (shape, size, etc.), installation mode, and installation method of the first heat insulating material 2 and second heat insulating material 4 explained above can be applied as much as possible. be. In this case, for example, the first heat insulating material installation step may be read as a first member installation step, the second heat insulating material installation step may be read as a second member installation step, and the others may be read in the same manner.

It should be noted that the ventilation structure 1 and the installation method of the ventilation sheet 3 of the present invention are not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention. be.

1 Ventilation structure 2 First insulation material 3 Ventilation sheet 3A First ventilation sheet 3B Second ventilation sheet 3C Third ventilation sheet 3D Fourth ventilation sheet 4 Second insulation material 5 Heat shield layer 6 Waterproof sheet 20 First direction row 21 Bidirectional row 23 First extending region 24, 24A, 24B, 24C Second extending region 25 Overlapping region 26 First region 27 Second region 30 Sheet portion 32 Convex portion 34 Recessed portion 35 Sheet overlapping region 51 Heat shield sheet 100, 110,120 Air passage 300 Roll body 900 Building 910 Rooftop surface A First direction B Second direction

Claims (14)

A method for installing a ventilation sheet that, when installed on the installation surface of a building, forms a ventilation path between the ventilation sheet and the installation surface of the building, the method comprising:
a first insulation material installation step of installing a plurality of first insulation materials at intervals on the installation surface of the building and fixing the plurality of first insulation materials to the installation surface of the building;
a ventilation sheet installation step of installing the ventilation sheet on the installation surface of the building in a region formed between the plurality of first insulation materials installed at intervals;
A second heat insulating material is installed on the installed ventilation sheet, and the second heat insulation material is fixed to the adjacent first heat insulation material to press the ventilation sheet against the installation surface of the building. material installation process,
characterized by comprising;
How to install a ventilation sheet. The ventilation sheet has a plurality of convex portions distributed on at least one plane,
In the ventilation sheet installation step, the ventilation sheet is installed in the region so that the convex portion of the ventilation sheet contacts the installation surface of the building,
The ventilation path is formed between the flat surface of one of the ventilation sheets and the installation surface of the building,
The ventilation sheet installation method according to claim 1. In the first insulation material installation step, at least some of the plurality of first insulation materials are installed on the installation surface of the building at intervals along a first direction along the installation surface of the building. A row of the first heat insulating material along the first direction (hereinafter referred to as a first direction row) is provided, and a plurality of the first direction rows are provided in parallel.
The ventilation sheet installation method according to claim 1. In the first heat insulating material installation step, at least some of the plurality of first heat insulating materials are spaced between adjacent rows in the first direction, and spaced between adjacent rows in the first direction. installed so that a first extension region extending along the first direction is formed;
In the ventilation sheet installation step, the ventilation sheet is installed in the first extension area,
The ventilation sheet installation method according to claim 3. In the first insulation material installation step, at least some of the plurality of first insulation materials are attached to the building along the installation surface of the building and at intervals along a second direction orthogonal to the first direction. A row (hereinafter referred to as a second direction row) of the first heat insulating material is installed on the installation surface of and along the second direction (hereinafter referred to as a second direction row), and is installed so that a plurality of the second direction rows are provided in parallel. characterized by being
The ventilation sheet installation method according to claim 4. In the first heat insulating material installation step, at least some of the plurality of first heat insulating materials are spaced between adjacent second direction rows, and spaced between adjacent second direction rows. installed so that a second extension region is formed that extends along the second direction and has an overlapping region that intersects with the first extension region and overlaps the first extension region at the intersecting portion; is,
In the ventilation sheet installation step, the ventilation sheet is installed in the second extension area,
The ventilation sheet installation method according to claim 5. The ventilation sheet is formed into a belt shape with a constant sheet width, and is wound into a roll,
Pulling out the ventilation sheet from a rolled state, cutting the ventilation sheet at a predetermined length position while keeping the sheet width constant, and installing the ventilation sheet in the first extension area. comprising a ventilation sheet processing step of providing the belt-shaped ventilation sheet,
When the direction in which the second heat insulating material is stacked on the ventilation sheet is defined as the stacking direction,
In the first heat insulating material installation step, when the first extending region is viewed in plan from the stacking direction, the first extending region is a belt-shaped region having a constant width while matching the sheet width of the ventilation sheet. A plurality of the first heat insulating materials are installed on the installation surface of the building so that:
The ventilation sheet installation method according to claim 4. The second heat insulating material is configured to have a constant width that matches the sheet width of the ventilation sheet,
In the second heat insulating material installation step, a plurality of the second heat insulating materials are installed so that the first heat insulating material and the second heat insulating material are spread over the upper layer side of the ventilation sheet.
The ventilation sheet installation method according to claim 7. The first insulation material, the second insulation material, and the ventilation sheet are configured such that the sum of the thickness of the ventilation sheet and the thickness of the second insulation material is the thickness of the first insulation material,
In the second heat insulating material installation step, when the second heat insulating material is installed, the surface of the second heat insulating material opposite to the side facing the ventilation sheet and the second heat insulating material installed in the first heat insulating material installation step are The surface of the insulation material opposite to the side facing the installation surface of the building is on the same plane.
The ventilation sheet installation method according to claim 1 or 8. A method for installing a ventilation sheet that, when installed on the installation surface of a building, forms a ventilation path between the ventilation sheet and the installation surface of the building, the method comprising:
a first member installation step of installing a plurality of first members at intervals on the installation surface of the building and fixing the plurality of first members to the installation surface of the building;
a ventilation sheet installation step of installing the ventilation sheet on the installation surface of the building in a region formed between the plurality of first members installed at intervals;
characterized by comprising;
How to install a ventilation sheet. a second member installation step of installing a second member on the installed ventilation sheet, fixing the second member to the adjacent first member, and pressing the ventilation sheet against the installation surface of the building; characterized by having
The ventilation sheet installation method according to claim 10. a plurality of first members installed at intervals on an installation surface of a building and fixed to the installation surface of the building;
a ventilation sheet installed on the installation surface of the building in a region between the plurality of first members installed at intervals, and forming a ventilation path between the ventilation sheet and the installation surface of the building;
a second member installed on the ventilation sheet and fixed to the adjacent first member to press down the ventilation sheet;
Equipped with
The ventilation sheet has a plurality of convex portions distributed on at least one plane, and is installed such that the convex portions are in contact with the installation surface of the building to form the ventilation path between the ventilation sheet and the installation surface of the building. characterized by
Building ventilation structure. The surface of the first member opposite to the side facing the installation surface of the building and the surface of the second member opposite the side facing the ventilation sheet are on the same plane,
The installation surface of the building is covered with the first member, the ventilation sheet, and the second member,
The ventilation structure for a building according to claim 12. The first member and the second member are heat insulating materials,
The ventilation structure for a building according to claim 12 or 13.

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