JP2017197961A - Ventilation material and ventilation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation material that prevents blocking of a ventilation hole thereon and offers excellent wall appearance.SOLUTION: A first ventilation material 21 is disposed on a top edge of a first exterior finishing material 17. The first ventilation material 21 includes a cap piece facing part 41, a hanging front plate part 42 extending downward from an edge of the cap piece facing part 41, a lower plate part 43 extending in a direction away from the hanging front plate part 42 at a same height with a bottom edge of the hanging front plate part 42, and a parting plate part 44 extending downward from the bottom edge of the hanging front plate part 42. A ventilation hole is formed on the hanging front plate part 42. The lower plate part 43 is disposed opposite a top edge of the first exterior finishing material 17, with a water cutoff material 100 tucked in between. The parting plate part 44 is disposed along an outer surface of the first exterior finishing material 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation structure for a wall standing on an outer peripheral part of a balcony or a roof, and a ventilation material used for the ventilation structure.

  Conventionally, a ventilation structure for ventilating the inside of a wall standing on the outer periphery of a balcony or a roof has been proposed. In patent document 1, in the structure provided with the 1st outer wall material, the 2nd outer wall material, and the headboard arrange | positioned above the 1st outer wall material and the 2nd outer wall material, Ventilation hardware is respectively arranged at the upper end and the upper end of the second outer wall material. A ventilation hole is formed in the ventilation hardware, and the outside of the wall and the inside of the first outer wall material and the inside of the second outer wall material are ventilated through the ventilation hole.

  A sealing material is disposed between the ventilation hardware and the upper end of the first outer wall member (the upper end of the second outer wall member). The space between the ventilation hardware and the upper end of the first outer wall member (the upper end of the second outer wall member) is sealed with a sealing material, and rainwater does not enter the inner side of the first outer wall member (the inner side of the second outer wall member). I am doing so.

  The ventilated hardware of Patent Document 1 includes a first horizontal plane facing the headboard, a first vertical plane extending downward from one end of the first horizontal plane, and a second horizontal plane extending from the lower end of the first vertical plane. And a horizontal plane. The ventilation hardware is the upper end of the first outer wall member (the upper end of the second outer wall member) so that the second horizontal surface faces the upper end of the first outer wall member (the upper end of the second outer wall member) with the sealing member interposed therebetween. Placed in. Further, by arranging the ventilation hardware and the sealing material on the extended surface of the outer surface of the first outer wall material (second outer wall material) or on the inner side thereof, the outer surface of the wall is flat.

Japanese Patent Laying-Open No. 2015-183491

  However, when installing the conventional ventilation hardware, the applied sealing material is pressed by the ventilation hardware, and a part of the sealing material is outside the extended surface of the outer surface of the first outer wall material (second outer wall material). The appearance of the wall will be poor. Further, the outside sealing material prevents the inside and outside of the wall from being ventilated by closing the ventilation holes of the ventilation hardware.

  Therefore, an object of the present invention is to provide a ventilation material and a ventilation structure in which the appearance of the wall is good and the sealing material does not possibly block the ventilation hole.

  The present invention is a ventilation material that is used for ventilation inside a wall covering material provided with a headboard on the top, is placed on the upper end of the outer covering material under the headboard, and faces the headboard. A facing portion, a plurality of ventilation holes are formed, a front hanging plate portion extending downward from an end portion of the headboard facing portion, and a lower position of the front hanging plate portion from a height position of the front hanging plate portion below the headboard facing portion. A lower plate portion extending in a direction away from the front hanging plate portion, and a parting plate portion extending downward from a lower end of the front hanging plate portion.

  In the above configuration, even when the ventilation material is arranged at the upper end of the exterior material through the sealing material so that the lower plate portion faces the upper end of the exterior material, the parting plate portion is along the outer surface of the exterior material. It is arranged and the sealing material is hidden by the parting plate part. Moreover, it can suppress that a sealing material comes out outside the extended surface of the outer surface of an exterior material by the parting board part. Thereby, the appearance of the wall becomes preferable. Moreover, since the sealing material does not flow around the ventilation hole by the lower plate part and the parting plate part, it is possible to prevent the ventilation hole from being blocked.

  Moreover, in the said structure, it is preferable that the water stop material is attached to at least one of the said parting board part and the said lower board part in the corner formed by the said parting board part and the said lower board part.

  In the above configuration, since the waterproof material is attached to the ventilation material in advance, it is not necessary to use a sealing material when attaching the ventilation material to the upper end of the exterior material, simplifying the work of assembling the ventilation structure using the ventilation material It is possible to improve workability, and the finish (appearance) and ventilation performance are not deteriorated.

  In the above configuration, the parting plate has a double structure having a first parting part and a second parting part, and the first parting part extends downward from the lower end of the front hanging plate part. The second parting part is arranged to be folded upward from the lower end of the first parting part, the upper end is connected to the lower plate part, and the ventilation hole extends from the front hanging plate part to the first parting part. It is preferable that it extends.

  In the said structure, since the ventilation hole is extended from the front drooping board part to the 1st parting part, the rain water etc. which exist in a ventilation material are easy to be discharged | emitted from a ventilation hole.

  Moreover, the said structure WHEREIN: It is preferable that the said lower board part inclines so that it may approach the said headboard facing part as it leaves | separates from the said front drooping board part.

  If the lower plate is inclined as described above, rainwater blown from the ventilation holes can be prevented from entering the inside of the exterior material, and even if rainwater is blown from the ventilation holes, the rainwater is ventilated by the inclination. It is easy to discharge toward the direction. In addition, since the lower plate portion is inclined, it is easy to form a space between the upper end surface of the exterior material, and in the case where water is stopped using a sealing material at the upper end of the exterior material, an accommodation space for the sealing material is provided. It can be formed, and when the water stopping material is attached in advance, the water stopping material can be prevented from being crushed more than necessary and damaged, or the durability of the water stopping material can be reduced.

  The ventilation structure of the present invention is a ventilation structure including a wall body, a headboard disposed above the wall body, and a ventilation material disposed under the headboard, and the ventilation material is the wall body. A headboard facing portion facing the headboard, a plurality of ventilation holes formed, and a front hanging plate portion extending downward from an end portion of the headboard facing portion, and the headboard Below the facing portion, a lower plate portion extending in a direction away from the front hanging plate portion from a height position of a lower end of the front hanging plate portion, and a parting plate portion extending downward from the lower end of the front hanging plate portion, The lower plate portion faces the upper end of the exterior material, and the parting plate portion is disposed along the outer surface of the exterior material.

  In the above configuration, even when the ventilation material is arranged at the upper end of the exterior material through the sealing material so that the lower plate portion faces the upper end of the exterior material, the parting plate portion is along the outer surface of the exterior material. It is arranged and the sealing material is hidden by the parting plate part. Moreover, it can suppress that a sealing material comes out outside the extended surface of the outer surface of an exterior material with a parting board. Thereby, the appearance of the wall becomes preferable. Moreover, since the sealing material does not flow around the ventilation hole by the lower plate part and the parting plate part, it is possible to prevent the ventilation hole from being blocked.

  Further, the headboard has an upper portion facing the upper end of the wall main body, and a side portion extending downward from an end portion of the upper portion, and the side portion is disposed at the upper end of the exterior material. It is preferable that the lower end of the side portion faces the ventilation material and is lower than the lower end of the parting plate portion of the facing ventilation material.

  In the above configuration, since the entire ventilation material is covered with the cap, it is possible to prevent rainwater from entering the wall body between the ventilation material and the exterior material or from the ventilation hole with the cap, and the ventilation material is visible from the outside. It can be difficult to improve aesthetics.

  According to the present invention, by extending the parting plate part from the lower end of the front hanging plate part, even when the sealing material is used for attaching the ventilation material by the parting plate part, the sealing material protrudes and the appearance is impaired. There is nothing. Moreover, there is no fear that the ventilation hole is blocked by the sealing material protruding from the lower plate part and the parting plate part.

It is explanatory drawing of the upper cross section of the wall (ventilation structure) which concerns on 1st Embodiment. (A) is sectional drawing of a ventilation material, (b) is a partially expanded sectional view of ventilation material, (c) is a front view of ventilation material.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Here, the ventilation structure using the under-head ventilation material according to the embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

  FIG. 1 shows a cross-sectional view of the upper part of a wall 1 standing on the outer periphery of a balcony or the like. The wall 1 includes a wall main body 2 and a headboard 3 disposed above the wall main body 2. The cap 3 covers the upper end of the wall body 2.

  A hollow portion 10 is formed in the wall body 2. The hollow portion 10 is an area surrounded by a first plywood 11 and a second plywood 12 that are arranged to face each other and a lateral trunk edge 13 that is arranged at the upper end between the two plywoods (11, 12). is there.

  A first moisture-permeable waterproof sheet 14 is disposed on the outer surface of the first plywood 11. A second moisture permeable waterproof sheet 15 is disposed on the outer surface of the second plywood 12.

A first exterior material 17 is disposed outside the first moisture permeable waterproof sheet 14 via a first copper edge 16. A first ventilation material 21 is disposed at the upper end of the first exterior material 17. The first copper edges 16 are arranged at predetermined intervals in the longitudinal direction of the wall 1. The space between the two first Birds Nest 16 adjacent, and has a first air passage A _1. In FIG. 1, the first air passage A ₁ can be seen, and the first copper edge 16 is disposed in the back of the first air passage A ₁ .

A second exterior material 19 is disposed outside the second moisture permeable waterproof sheet 15 via a second copper edge 18. A second ventilation material 22 is disposed at the upper end of the second exterior material 19. The second copper edges 18 are arranged at predetermined intervals in the longitudinal direction of the wall 1. The space between the nearest neighboring two second Birds Nest 18 has a second ventilation path A _2. In FIG. 1, the second air passage A ₂ is seen, and the second copper edge 18 is disposed in the back of the second air passage A ₂ .

  The top 3 is arranged so as to face the upper end surface of the wall body 2, the first side 32 extending downward from the left end of the upper part 31 in FIG. 1, and the upper part 31 in FIG. 1. And a second side portion 33 extending downward from the right end of the second side portion 33. The first side portion 32 faces the first ventilation material 21. The second side portion 33 faces the second ventilation material 22. The headboard 3 is mounted on the wall main body 2 via a headboard mounting member screwed onto the lateral trunk edge 13.

  Next, the structure of the 1st ventilation material 21 is demonstrated in detail, referring FIG. 2 (a)-FIG.2 (c). Since the 1st ventilation material 21 and the 2nd ventilation material 22 are the same structures and the wall 1 is a left-right symmetric structure in FIG. 1, about the structure around the 2nd ventilation material 22 and the 2nd ventilation material 22 below, Description may be omitted. FIG. 2B is a partially enlarged view of a cross section taken along the line IIB-IIB in FIG.

  As shown to Fig.2 (a), the 1st ventilation material 21 is formed by bending one rectangular belt-shaped metal plate in multiple places. The first ventilation material 21 includes a headboard facing portion 41 extending in the left-right direction in FIG. 2A, a front hanging plate portion 42 extending downward from the left end of the headboard facing portion 41, and a front hanging plate portion 42. It has a lower plate portion 43 extending from the same height as the lower end in a direction away from the front hanging plate portion 42 and a parting plate portion 44 extending downward from the lower end of the front hanging plate portion 42.

  The headboard facing portion 41 includes a plate-like first extending portion 51 that extends in the horizontal direction and a plate-like second extending portion 52 that is folded back at the right end and overlapped downward. The 1st extension part 51 and the 2nd extension part 52 are extended in the left-right direction, and are connected by right ends. From the left end of the first extending portion 51, the front hanging plate portion 42 extends downward. The second extending portion 52 is shorter than the first extending portion 51 and extends to the front of the left end of the first extending portion 51. From the left end of the 2nd extension part 52, the 1st shielding part 61 protrudes below. In addition, the coping opposing part 41 is nail | clamped to the horizontal trunk edge 13 by the part on the right side (refer FIG. 1).

  As shown in FIG. 2A, the lower plate portion 43 is connected to the front hanging plate portion 42 via the parting plate portion 44. The lower plate portion 43 is disposed to extend to the right side of the first shielding portion 61 so as to face the lower portion of the headboard facing portion 41 and form a ventilation path, and approaches the headboard facing portion 41 as the distance from the front hanging plate portion 42 increases. So as to be inclined. From the right end of the lower plate portion 43, the second shielding portion 62 protrudes upward toward the headboard facing portion 41 to prevent rainwater or the like from entering inside.

  The parting plate part 44 continuously extends downward from the lower end of the front hanging plate part 42, and is folded upward at the first parting part 71 that forms one plane with the front hanging plate part 42 and the lower end of the first parting part 71. It has the 2nd parting part 72 piled up. The first parting part 71 and the second parting part 72 are opposed to each other in the left-right direction in FIG. The lower plate portion 43 is connected to the upper end of the second parting portion 72 so as to extend in the right direction.

  As shown in FIG. 2A, the first parting part 71 extends downward from the lower end of the front hanging plate part 42. The upper end of the second parting part 72 is connected to the left end of the lower plate part 43.

  As shown in FIGS. 2 (b) and 2 (c), a plurality of ventilation holes 81 are formed in the front hanging plate portion 42. The ventilation hole 81 is a vertically elongated hole extending from the upper part of the front hanging plate part 42 to the upper end part of the first parting part 71. The ventilation hole 81 is arrange | positioned at predetermined intervals in the longitudinal direction of the 1st ventilation material 21, as shown in FIG.2 (c).

  As shown in FIGS. 2B and 2C, the ventilation hole 81 includes an upper hole portion 82 formed in the front hanging plate portion 42 and a lower hole portion 83 formed in the first parting portion 71. Have. Since the ventilation hole 81 is not formed in the second parting part 72, the lower hole part 83 is blocked by the second parting part 72 in the front view of the ventilation material (see FIG. 2C). I can see.

As shown in FIG. 2 (a), the lower plate portion 43 is inclined and the second shielding portion 62 is provided on the right end thereof, so that the upper hole portion 82 of the ventilation hole 81 shown in FIG. 2 (b). Even if rainwater or the like enters from the bottom, rainwater or the like can be prevented from entering the first air passage A ₁ (see FIG. 1), and the rainwater or the like is directed to the ventilation hole 81 along the inclined surface of the lower plate portion 43. The air then flows back and is discharged from the ventilation hole 81 (see FIG. 2B). Furthermore, since the lower hole part 83 is provided, the rainwater etc. which entered can be discharged more reliably, and moisture can hardly remain inside the first ventilation material 21 (in the air passage).

  A corner C is formed in the first ventilation material 21 by the lower plate portion 43 and the second parting portion 72 (see FIG. 2B). In the corner portion C, the water stop material 100 is attached to the lower surface of the lower plate portion 43. The water blocking material 100 extends in the longitudinal direction of the first ventilation material 21. The water blocking material 100 is made of, for example, ethylene propylene diene rubber (EPDM). In addition to the other rubber-like member and the foamed body, a known water-stopping packing material or the like can be widely used for the water-stopping material 100.

  As shown in FIG. 1, the first ventilation member 21 has the lower plate portion 43 placed on the upper end of the first exterior member 17 through the water blocking material 100, and the second parting portion 72 has the first parting portion 72. It arrange | positions on the 1st exterior material 17 so that the outer surface of the 1 exterior material 17 may be met. The headboard facing portion 41 is disposed so as to face the upper portion 31 of the headboard, and is screwed to the lateral trunk edge 13. Similarly, the second ventilation material 22 is disposed at the upper end of the second exterior material 19.

  Thereby, the parting plate part 44 (second parting part 72) of the first ventilation material 21 is substantially adjacent to the outer surface of the first exterior member 17. Further, the parting plate portion 44 of the second ventilation material 22 is substantially adjacent to the outer surface of the second exterior material 19. Thereby, even if the 1st ventilation material 21 and the 2nd ventilation material 22 are arrange | positioned in the wall main body 2, the width | variety of the wall main body 2 does not expand substantially, The width size of the headboard 3 which covers these upper end parts is made. It is not necessary to use a material that is particularly wide with respect to the width of the wall body 2.

  Since the space between the lower plate portion 43 and the upper end of the first exterior member 17 is sealed by the water blocking material 100, rainwater, moisture and the like do not enter inside the wall body 2 from between these. In addition, the water stop material 100 is pressed by the lower plate part 43 of the 1st ventilation material 21, and produces the water stop effect by compressing more than a predetermined dimension in the up-down direction in FIG.

  In addition, when a gap is formed between the parting plate portion 44 (second parting portion 72) and the outer surface of the first exterior material 17, a part of the water blocking material 100 is on the outer surface of the first exterior material 17. Even if it protrudes outside the extended surface, the water blocking material 100 cannot be hidden by the parting plate 44 in the front view of the wall 1.

  Moreover, since the 1st side part 32 of the coping 3 is extended to the height lower than the lower end of the parting board part 44 of the 1st ventilation material 21, rainwater is the ventilation hole 81 (FIG.2 (b) of FIG. )) Or between the first ventilation material 21 and the first exterior material 17 (see FIG. 1). Moreover, since the 2nd side part 33 of the coping 3 is also extended to the height lower than the lower end of the parting board part 44 of the 2nd ventilation material 22, rainwater is the ventilation hole 81 (refer FIG.2 (b)), or 2nd 2 It is difficult to enter from between the ventilation material 22 and the second exterior material 19 (see FIG. 1).

In the first ventilation material 21, an air passage is formed between the headboard facing portion 41 and the lower plate portion 43. The ventilation path meanders by the first shielding part 61 and the second shielding part 62. Thereby, even if rainwater or the like enters the first ventilation material 21 from the ventilation hole 81 shown in FIG. 2B, the rainwater or the like collides with the first shielding part 61 and the second shielding part 62, and the first exterior Intrusion into the first air passage A ₁ inside the material 17 can be prevented. On the other hand, the outside air that has entered through the ventilation hole 81 flows through the ventilation path in the first ventilation material 21 to the first ventilation path A ₁ inside the first exterior material 17, and is outside the wall 1 and the first exterior. Ventilation with the inside of the material 17 is performed.

As described above, according to the present embodiment, the following effects are obtained.
When the first ventilation member 21 is disposed at the upper end of the first exterior member 17 so that the lower plate portion 43 faces the upper end of the first exterior member 17, the upper edge of the first exterior member 17 is hidden by the parting plate portion 44. Therefore, even if unevenness occurs at the upper edge of the first exterior material 17, the appearance of the wall 1 is not impaired. Moreover, since the water stop material 100 arrange | positioned along the outer surface of the 1st exterior material 17 is not visible by the parting board part 44, the appearance of the wall 1 is not impaired. Furthermore, even if the waterproof material 100 protrudes outside the extended surface of the outer surface of the first exterior material 17 by being pressed by the first ventilation material 21, the waterproof material 100 is hidden by the parting plate portion 44. An appearance of 1 is preferred. Moreover, since the water blocking material 100 does not protrude from the periphery of the ventilation hole 81 by the lower plate material 43 and the parting plate portion 44, the ventilation hole 81 can be prevented from being blocked by the water blocking material 100.

  Further, by attaching the water blocking material 100 to the first ventilation material 21 in advance, when assembling the ventilation structure shown in FIG. 1, the work of placing a sealing material (coking material) on the upper end of the first exterior material 17 is omitted. it can. Therefore, workability can be improved.

  Further, since the ventilation hole 81 extends from the front hanging plate portion 42 to the first parting portion 71, rainwater or the like that has entered the inside of the first ventilation material 21 is easily discharged from the ventilation hole 81. On the other hand, since the ventilation hole 81 is not formed in the 2nd parting part 72 facing the 1st parting part 71, rainwater etc. from the lower hole part 83 formed in the 1st parting part 71 of the 1st ventilation material 21 Entering inside can be suppressed.

  Further, since the lower plate portion 43 is inclined so as to approach the headboard facing portion 41 as it moves away from the front drooping plate portion 42, rainwater or the like that has entered the inside of the first ventilation material 21 is utilized using the inclination of the lower plate portion 43. Therefore, it is easy to lead out toward the ventilation hole 81 (see FIG. 2B). Therefore, the rainwater etc. in the 1st ventilation material 21 are easy to be discharged | emitted outside.

  Moreover, since the 1st ventilation material 21 and the 2nd ventilation material 22 are covered by the upper part 31, the 1st side part 32, and the 2nd side part 33 of the coping 3, the 1st ventilation material 21 and the 1st exterior material 17 and Further, it is possible to prevent rainwater and the like from entering the wall body 2 from between the second ventilation material 22 and the second exterior material 19.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

  For example, in the above-described embodiment, the water stop material 100 is attached to the lower plate portion 43 at the corner C between the lower plate portion 43 and the parting plate portion 44 of the first ventilation material 21. The mounting position can be changed. For example, the water stop material 100 may be attached to the parting plate portion 44. Further, the water stop material 100 may be attached to both the lower plate portion 43 and the parting plate portion 44.

  Further, the water blocking material 100 may not be attached to the first ventilation material 21. In this case, it is preferable to arrange a caulking material (sealing material) or the like as a water stop material between the first exterior material 17 and the first ventilation material 21. Similarly, the water blocking material 100 may not be attached to the second ventilation material 22. In this case, it is preferable to arrange a caulking material or the like between the second exterior material 19 and the second ventilation material 22.

  Furthermore, in the above-described embodiment, the ventilation hole 81 formed in the front hanging plate part 42 extends to the first parting part 71, but the ventilation hole 81 may not extend to the first parting part 71. Good.

  Moreover, in the above-mentioned embodiment, since the 1st ventilation material 21 and the 2nd ventilation material 22 were formed by bending one metal plate, the parting board part 44 is the 1st parting part 71, the 2nd parting part 72, However, the parting plate portion 44 may be formed from one member by resin molding. In this case, for example, the front hanging plate portion and the parting plate portion are continuous, and the lower plate portion extends from these boundary portions.

  Further, in the above-described embodiment, the lower plate portion 43 is inclined so as to approach the headboard facing portion 41 as it is separated from the front hanging plate portion 42, but the lower plate portion 43 is not inclined and extends in the horizontal direction. Also good.

DESCRIPTION OF SYMBOLS 1 Wall 2 Wall main body 3 Kasagi 10 Hollow part 11 1st plywood 12 2nd plywood 13 Horizontal trunk edge 14 1st moisture permeable waterproof sheet 15 2nd moisture permeable waterproof sheet 16 1st copper edge 17 1st exterior material 18 2nd copper Edge 19 2nd exterior material 21 1st ventilation material 22 2nd ventilation material 31 Upper part 32 1st side part 33 2nd side part 41 Kasagi facing part 42 Front drooping plate part 43 Lower board part 44 Parting board part 51 1st extension part 52 second extending portion 61 first shield part 62 second shield part 71 first parting part 72 second parting part 81 ventilation openings 82 upper hole portion 83 below the hole 100 water stopping material A ₁ first air passage A ₂ second 2 vent C corner

Claims (6)

It is used for ventilation inside the exterior of the wall where the headboard is provided, and is a ventilation material placed under the headboard and placed on the upper end of the exterior material,
A counterboard facing portion facing the headboard,
A plurality of ventilation holes are formed, and a front hanging plate portion extending downward from an end portion of the headboard facing portion,
Below the headboard facing portion, a lower plate portion extending in a direction away from the front hanging plate portion from a height position of a lower end of the front hanging plate portion,
A ventilation material having a parting plate portion extending downward from a lower end of the front hanging plate portion.   The water stop material is attached to at least one of the parting plate part and the lower plate part at a corner formed by the parting plate part and the lower plate part. Ventilation material. The parting plate has a double structure having a first parting part and a second parting part,
The first parting part extends in a downward direction from a lower end of the front hanging plate part,
The second parting part is disposed by being folded upward from the lower end of the first parting part, and the upper end is connected to the lower plate part,
The ventilation material according to claim 1 or 2, wherein the ventilation hole extends from the front hanging plate part to the first parting part.   The ventilation material according to any one of claims 1 to 3, wherein the lower plate portion is inclined so as to approach the headboard facing portion as the distance from the front hanging plate portion increases. A ventilation structure comprising a wall body, a headboard disposed above the wall body, and a ventilation material disposed under the headboard;
The ventilation material is
It is arranged at the upper end of the wall body exterior material,
A counterboard facing portion facing the headboard,
A plurality of ventilation holes are formed, and a front hanging plate portion extending downward from an end portion of the headboard facing portion,
Below the headboard facing portion, a lower plate portion extending in a direction away from the front hanging plate portion from a height position of a lower end of the front hanging plate portion,
Having a parting plate portion extending downward from the lower end of the front hanging plate portion,
The ventilation structure, wherein the lower plate portion faces the upper end of the exterior material, and the parting plate portion is disposed along the outer surface of the exterior material. The headboard has an upper portion facing the upper end of the wall main body, and a side portion extending downward from an end portion of the upper portion,
The side portion is opposed to the ventilation material disposed at the upper end of the exterior material,
The ventilation structure according to claim 5, wherein a lower end of the side portion is positioned lower than a lower end of the parting plate portion of the facing ventilation material.

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