JP7803530B2 - Ventilation structure - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies. November 17, 2021. Published in the 2022 Hauseco catalog.

This invention relates to ventilation structures, and in particular to ventilation structures installed on the copings, eaves, and eaves at the upper ends of structures such as fences, balcony railings, and parapets.

The following technologies have been proposed as ventilation structures used to provide ventilation and prevent corrosion and cracks in copings installed at the top ends of structures (standing structures) such as fences, balcony railings, and parapets.

Patent Document 1 discloses a ventilation structure under the capping board in which a ventilation member is installed above the exterior wall base material and the exterior wall material. The ventilation member is a laminated body of a corrugated cardboard structure made of synthetic resin, with a large number of through-holes of a specified size formed in it. This allows air to pass from the inside to the outside while providing a waterproof function to prevent rainwater and other water from passing through the ventilation member and entering the interior of the building structure, thereby enabling ventilation to prevent moist air from accumulating under the capping board.

The coping structure disclosed in Patent Document 2 uses a ventilation member with a similar configuration to the ventilation member described in Patent Document 1, and further includes a front curtain portion extending vertically outward from the ventilation member. By fastening a coping cover to the lower end of the front curtain portion, it can be fastened to the upper end of the frame without driving screws, preventing water from seeping into the frame through the screwed points.

JP 2013-108314 A JP 2018-127883 A

In conventional ventilation structures such as those described in Patent Documents 1 and 2, the ventilation members have a specific structure, but there is still room for improvement in their ventilation and waterproofing functions.

In addition, in conventional ventilation structures, caulking material was used to fill the gap between the upper end of the exterior wall material and the ventilation member, but applying it to areas below the coping that are difficult to see was time-consuming.

This invention was made to solve the above-mentioned problems, and aims to provide a ventilation structure with excellent ventilation and waterproofing functions.

To achieve the above object, the invention described in claim 1 is a ventilation structure installed above an exterior wall material and extending in the longitudinal direction, comprising a frame body having a first vertical section that extends vertically when installed, a first horizontal section that extends from the upper end of the first vertical section toward the outdoors, and a second vertical section that extends vertically downward from a part of the first horizontal section and has a through hole formed therein; and a ventilation member within the frame body that has ventilation functions from indoors to outdoors and waterproofing functions, the ventilation member comprising a first baffle plate that extends vertically across the ventilation path from indoors to outdoors and has a first air vent formed therein, and a second baffle plate that extends vertically outward from the first baffle plate at a predetermined distance and has a second air vent formed therein.

With this configuration, the second vertical section, first baffle plate, and second baffle plate prevent rainwater from entering, while the through-hole, first vent hole, and second vent hole ensure a ventilation path from indoors to outdoors.

The invention of claim 2 is the same as the invention of claim 1, except that the ventilation member is formed by combining three U-shaped members, each of which has a substantially U-shaped cross section in the short-side direction, including a vertical surface portion, an upper surface portion, and a lower surface portion. The vertical surface portion has a plurality of cut-out holes formed at predetermined intervals in the longitudinal direction, extending toward the open side of the short-side cross section. The three U-shaped members include a first U-shaped member with its open side facing outdoors, a second U-shaped member whose open side faces the first U-shaped member and whose upper surface portion and lower surface portion are overlapped and combined together, and a third U-shaped member whose open side faces outdoors, whose vertical surface portion is in contact with the second U-shaped member and whose cut-out holes are aligned with each other.

When configured in this way, air from indoors is exhausted to the outdoors through the cut-out holes.

The invention described in claim 3 is the same as the invention described in claim 1 or claim 2, in which the through-hole is provided in the vertically lower half region of the second vertical portion.

This configuration ensures sufficient ventilation while improving waterproofing.

The invention described in claim 4 is the configuration of any one of the inventions described in claims 1 to 3, wherein the frame further comprises a second horizontal portion extending from the lower end of the second vertical portion toward the interior of the room, and the ventilation member is fixed to the second horizontal portion.

When configured in this manner, the top and bottom of the first and second baffles are sandwiched between the first and second horizontal sections.

The invention described in claim 5 is the same as the invention described in claim 4, but further includes a drain hole at the connection between the second vertical section and the second horizontal section, which drains infiltrating rainwater to the outside.

This configuration ensures that even if a small amount of rainwater does get in, it will be drained to the outside.

The invention described in claim 6 is the same as the configuration of any one of claims 1 to 5, further comprising a front hanging portion extending vertically outward from the second vertical portion at a predetermined distance, and a connecting portion connecting the first horizontal portion and the front hanging portion.

This configuration creates turbulence in the air flowing into the space between the front curtain and the second vertical section. A top board cover can also be fastened to the bottom end of the front curtain.

The invention described in claim 7 is the same as the configuration of any one of claims 1 to 6, further comprising an elastically deformable cushioning material installed between the ventilation member and the exterior wall material.

By configuring it in this way, the space between the ventilation member and the exterior wall material can be filled with cushioning material.

The invention described in claim 8 is the same as the invention described in any one of claims 1 to 7, in which the exterior wall material is attached via furring strips attached to the outer surface of the exterior wall base material, and the first vertical portion of the frame body is installed so as to be inserted into the gap between the exterior wall base material and the furring strips.

This configuration makes it easier to position the frame.

As explained above, the invention described in claim 1 prevents rainwater from entering through the second vertical section, first baffle plate, and second baffle plate, while the through holes, first air vent, and second air vent ensure a ventilation path from indoors to outdoors, thereby providing excellent ventilation and waterproofing functions.

In addition to the effects of the invention described in claim 1, the invention described in claim 2 improves the stability of the ventilation path by allowing air from indoors to be exhausted to the outdoors through the cut-and-raised holes.

The invention described in claim 3 achieves the same effects as the invention described in claim 1 or claim 2, while also ensuring sufficient ventilation and improving waterproofing, allowing for a more compact structure.

The invention described in claim 4 achieves the same effects as any of the inventions described in claims 1 to 3, but also improves installation stability by sandwiching the top and bottom of the first and second baffles between the first and second horizontal sections.

The invention described in claim 5 has the same effect as the invention described in claim 4, but also improves waterproofing by draining even small amounts of rainwater to the outside.

In addition to the effects of any of the inventions described in claims 1 to 5, the invention described in claim 6 creates turbulent air flow in the space between the front curtain portion and the second vertical portion, further preventing rainwater from seeping in. Furthermore, a coping cover can be fastened to the lower end of the front curtain portion, allowing it to be attached without driving screws or the like into the upper end of the frame.

In addition to the effects of any of the inventions described in claims 1 to 6, the invention described in claim 7 allows the space between the ventilation member and the exterior wall material to be filled with cushioning material, eliminating the need for caulking, reducing the installation process, and making replacement easier.

The invention described in claim 8 achieves the same effects as any of the inventions described in claims 1 to 7, and also makes it easier to position the frame, thereby making installation work more efficient.

1 is a cross-sectional view showing the fit when a ventilation structure according to the first embodiment of the present invention is used under the fascia of a house. 2 is a cross-sectional view showing a ventilation structure included in the X portion shown in FIG. 1. FIG. 3 is an enlarged perspective view of a portion Y shown in FIG. 2 . 4A to 4C are schematic diagrams showing the assembly process of the ventilation member shown in FIG. 3. A cross-sectional view showing the fit when a ventilation structure according to the second embodiment of the present invention is used under the fascia of a house. A cross-sectional view showing the fit when a ventilation structure according to the third embodiment of the present invention is used under the fascia of a house. FIG. 7 is a cross-sectional view showing a ventilation structure included in the Z portion shown in FIG. 6 . A cross-sectional view showing the fit when a ventilation structure according to the fourth embodiment of the present invention is used under the fascia of a house.

Figure 1 is a cross-sectional view showing the fit of a ventilation structure according to the first embodiment of the present invention when used under the fascia of a house.

The capping structure 1, capping 2, and ventilation structure 4 described below are elongated along the longitudinal direction of the main body 40, such as a fence, balcony railing, or parapet, and Figure 1 shows the fit of the cross section in the short direction. The center of the figure is the indoor side, and the left and right sides are the outdoor side.

Referring to the same figure, a pair of exterior wall base materials 41a, 41b are arranged at the exterior end of the short side of the body 40, with a pair of furring strips 42a, 42b provided on their outer surfaces, and a pair of ceramic siding exterior wall materials 45a, 45b provided further outward (on the exterior side). The furring strips 42a, 42b are arranged at predetermined intervals in the longitudinal direction (not shown), and these intervals form air passages 48a, 48b. Furthermore, the space inside the body 40 is connected to the air passages 48a, 48b (not shown) so that warm, humid air inside the body 40 rises through the air passages 48a, 48b. Finally, a coping structure 1 is installed at the upper end of the body 40.

The capping structure 1 is primarily composed of a capping 2 installed at the upper end of the main body 40 and a pair of ventilation structures 4a, 4b installed above a pair of exterior wall materials 45a, 45b and below the capping 2.

The capping board 2 is made of metal and is installed via capping board mounting brackets 3, which are provided at predetermined intervals along the length of the upper end of the main body 40, to cover the entire upper end of the main body 40 and the ventilation structures 4a and 4b from above to the outdoor side, preventing rainwater from directly entering the main body 40 inside the capping board 2 from above.

Each of the pair of ventilation structures 4a, 4b is installed above the exterior wall materials 45a, 45b so as to cross the ventilation path from the inside to the outside (from the indoor side to the outdoor side) indicated by the dashed arrow 38 in the figure.

Figure 2 is a cross-sectional view showing the ventilation structure included in the X portion shown in Figure 1, and Figure 3 is an enlarged perspective view of the Y portion shown in Figure 2.

First, referring to Figure 2, the ventilation structure 4b is primarily composed of a frame 12 made of steel plate and a ventilation member 13 that is placed inside the frame 12 and provides ventilation from indoors to outdoors and waterproofing.

The frame 12 is primarily composed of a first vertical section 14 that extends vertically when installed; a first horizontal section 15 that extends substantially horizontally from the upper end of the first vertical section 14 toward the outdoors (toward the right in Figure 2); and a second vertical section 16 that extends vertically downward from the outdoor end of the first horizontal section 15. The frame 12 also includes a second horizontal section 17 that extends from the lower end of the second vertical section 16 parallel to the first horizontal section 15 and a predetermined distance in the direction of the first vertical section 14 (toward the indoors). The second vertical section 16 has a plurality of through holes 18 formed at predetermined intervals along its length, and these through holes 18 are arranged to fit within area A, the lower vertical half of the second vertical section 16. The advantages of this configuration will be discussed later.

The connecting angle between the first vertical section 14 and the first horizontal section 15, shown as _θ1 in Figure 2, is set to 87°. Here, since the first vertical section 14 is installed vertically, the first horizontal section 15 and the second horizontal section 17 are each inclined downward by 3° toward the outdoors. In addition, at the connecting point between the second vertical section 16 and the second horizontal section 17, multiple drainage holes 19 are formed at predetermined intervals in the longitudinal direction to drain infiltrating rainwater to the outside.

Furthermore, the inner (leftward in Figure 2) end 20 of the second horizontal section 17 is bent upward.

The ventilation member 13 is equipped with a first baffle plate 24 that extends vertically across the ventilation path from indoors to outdoors, and a second baffle plate 26 that extends vertically outward (towards outdoors) from the first baffle plate 24 at a predetermined distance. The first baffle plate 24 is formed with a first ventilation hole 25 that allows air to pass through, and the second baffle plate 26 is similarly formed with a second ventilation hole 27.

With this configuration, the second vertical section 16, first baffle plate 24, and second baffle plate 26 prevent rainwater from entering, while the through-hole 18, first vent hole 25, and second vent hole 27 ensure a ventilation path from indoors to outdoors, as indicated by arrow 38 in Figure 1. Therefore, while air can circulate inside the main body 40, there are essentially three barriers to prevent the infiltration of water, such as rainwater, from the outside, and the ventilation structure 4b exhibits excellent ventilation and waterproofing functions.

In this case, because the through holes 18 are provided in region A, the vertically lower half of the second vertical section 16, as described above, even if rainwater attempts to infiltrate along with wind blowing from the outside, it will first be blown into the space 30 above the exterior of the second vertical section 16, where its momentum will be neutralized before it comes into contact with the through holes 18 in the second vertical section 16. As a result, sufficient ventilation is ensured without providing through holes 18 throughout the entire second vertical section 16, while improving waterproofing. This means that the number of U-shaped members that make up the ventilation member 13, described below, can be reduced to a minimum of three, allowing for a more compact structure.

In addition, as mentioned above, drainage holes 19 are provided at the connection points between the second vertical section 16 and the second horizontal section 17, allowing even small amounts of rainwater to be drained to the outside, further improving waterproofing. Furthermore, as mentioned above, the first horizontal section 15 and the second horizontal section 17 are inclined downward at 3° toward the outdoors, so that infiltrating rainwater is guided to the drainage holes 19, further improving waterproofing.

Furthermore, the ventilation member 13 described above is fixed to the second horizontal portion 17 of the frame body 12 using rivets 21a and 21b. This configuration ensures that the top and bottom of the first baffle plate 24 and the second baffle plate 26 are sandwiched between the first horizontal portion 15 and the second horizontal portion 17, improving installation stability.

Also, referring back to Figure 1, an elastically deformable EPDM buffer material 22 is provided between the second horizontal section 17 of the ventilation structure 4b and the exterior wall material 45b. By installing the ventilation structure 4b above the exterior wall material 45b with the buffer material 22 already attached, the space between the ventilation member 13 and the exterior wall material 45b can be filled with the buffer material 22, eliminating the need to caulk in areas that are difficult to see below the fascia 2 and reducing the number of installation steps. Replacement is also easier.

The ventilation structure 4a on the other side of the ventilation structure 4b described above has the same configuration. Therefore, excellent ventilation and waterproofing functions are achieved on both sides facing outdoors.

Next, we will explain how to construct the ventilation member 13 in such ventilation structures 4a and 4b.

Figure 4 is a schematic diagram showing the assembly process for the ventilation member shown in Figure 3.

Referring to the same figure, the ventilation member 13 is composed of a first U-shaped member 51 combined with a second U-shaped member 61 and a third U-shaped member 71 of the same shape.

The first U-shaped member 51 is constructed by bending a long metal plate into a roughly U-shape in cross section in the short direction as shown in the figure, to form a vertical surface 52, an upper surface 53, and a lower surface 54. Furthermore, the vertical surface 52 has a plurality of raised holes 55 formed at predetermined intervals along the length, rising toward the open side 56 in the cross section in the short direction.

When assembling the ventilation member 13, first, referring to Figure 4 (1), the open side 56 of the first U-shaped member 51 and the open side 66 of the second U-shaped member 61 are brought closer together as indicated by arrows 60a and 60b, and then, as shown in Figure 4 (2), the upper surface portions 53, 63 and lower surface portions 54, 64 are overlapped to combine them to form a substantially rectangular cross section in the short direction.

Next, the third U-shaped member 71 is positioned with its open side 76 facing outdoors (the same direction as the open side 56 of the first U-shaped member 51), and as shown by arrow 70, the vertical surface 72 of the third U-shaped member 71 is in contact with the vertical surface 62 of the second U-shaped member 61, and the positions (heights) of the cut-out holes 75 and cut-out holes 65 are aligned, thereby completing the assembly of the ventilation member 13.

In the ventilation member 13 assembled in this manner, the vertical surface 52 of the first U-shaped member 51 functions as the first baffle plate 24, and the cut-and-raised hole 55 functions as the first air vent 25. Furthermore, spaced outward from the first baffle plate 24 by a distance maintained by the upper surface portions 53, 63 and the lower surface portions 54, 64, the vertical surface portion 62 of the second U-shaped member 61 and the vertical surface portion 72 of the third U-shaped member 71 function as the second baffle plate 26, and the cut-and-raised holes 65, 75 function as the second air vent 27.

With this configuration, air from indoors is discharged to the outdoors through the cut-and-raised holes 55, 65, and 75, improving the stability of the ventilation path. Furthermore, because the first baffle plate 24 and the second baffle plate 26 are positioned a certain distance apart, the ventilation path from indoors to outdoors is less likely to become clogged and waterproofing is improved.

Referring back to Figures 1 and 2, the ventilation member 13 is placed inside the frame 12 (below the first horizontal section 15 and inward from the second vertical section 16) made by bending a metal plate, thereby forming the ventilation structure 4b.

When installing the ventilation structure 4b, first widen the gap between the upper end of the exterior wall base material 41b and the upper end of the furring strip 42b to form a gap, and then insert the first vertical portion 14 of the frame 12 of the ventilation structure 4b into the gap.

This makes it easier to position the frame 12, making installation more efficient.

As described above, the ventilation structure 4b installed above the exterior wall material 45b prevents rainwater from entering while reducing the risk of clogging and ensuring a ventilation path from indoors to outdoors, thereby providing excellent ventilation and waterproofing functions.

Next, Figure 5 is a cross-sectional view showing the fit of a ventilation structure according to a second embodiment of the present invention when used under the fascia of a house.

Note that the ventilation structure 5 according to the second embodiment of the present invention has a fundamentally similar configuration to the ventilation structure 4 according to the first embodiment described above, and therefore the following description will focus on the differences.

Referring to the same figure, single-hat joiners 32a, 32b are provided below each of the ventilation structures 5a, 5b, without any buffer material 22 (see Figure 1). The single-hat joiners 32a, 32b extend longitudinally and have hat portions 33a, 33b with a U-shaped cross-section. The single-hat joiners 32a, 32b are fixed to the furring strips 42a, 42b, respectively, with nails or the like so that the lower surfaces of the hat portions 33a, 33b contact the upper ends of the exterior wall materials 45a, 45b and their upper surfaces contact the lower parts of the ventilation structures 5a, 5b.

The gap between the lower part of the ventilation structure 5a, 5b and the upper end of the exterior wall material 45a, 45b is filled using caulking material 34a, 34b on the hat portions 33a, 33b of the single hat joiners 32a, 32b installed in this manner.

In this way, it is possible to use caulking materials 34a and 34b without using cushioning material 22 for ventilation structures 5a and 5b.

Next, Figure 6 is a cross-sectional view showing the fit when a ventilation structure according to a third embodiment of the present invention is used under the fascia of a house, and Figure 7 is a cross-sectional view showing the ventilation structure included in part Z shown in Figure 6.

Note that the ventilation structure 6 according to the third embodiment of the present invention has a fundamentally similar configuration to the ventilation structure 4 according to the first embodiment described above, so the following explanation will focus on the differences.

First, referring to Figure 6, ventilation structures 6a and 6b are provided above exterior wall materials 45a and 45b via cushioning materials 22a and 22b. Furthermore, the top plate portion 81 of the capping board 78 is inclined downward from one end 79, which is on the outdoor side of the house, to the other end 80, which is on the indoor side. Therefore, when rain falls on the capping board 78, the rainwater is guided to flow toward the other end 80 of the capping board 78 (the indoor side of the house), preventing traces of rainwater from remaining on the outdoor side of the house.

In addition, an elastically deformable buffer 82 with a trapezoidal cross-sectional shape is provided between the top board 78 and the main body 40, and its upper surface fits along the slope of the top board 81. This ensures that the shape of the top board 78 remains stable even when a load is applied to the top board 81.

Furthermore, the lower ends of one end 79 and the other end 80 of the cap board 78 are bent upward and inward to form folded-back portions 83a and 83b, respectively.

Referring now to Figure 7, the ventilation structure 6b includes, in addition to the structure of the ventilation structure 4b in the first embodiment described above, a front curtain portion 89 extending vertically outward from the second vertical portion 86 at a predetermined distance, and a connecting portion 87 connecting the first horizontal portion 85 and the front curtain portion 89. As shown in Figure 6, the folded portion 83b of the other end 80 of the coping board 78 is hooked onto the lower end 90 of the front curtain portion 89, and the same is true for the folded portion 83a of the one end 79. The other end 80 is fixed to the front curtain portion 89 with screws or the like. In this way, the coping board 78 can be attached to the top panel portion 81 or the upper end of the main body 40 without driving in any fasteners such as screws. This eliminates the need for mounting holes, preventing rainwater from seeping into the main body 40 through such mounting holes.

Furthermore, the lower end 90 of the front hanging portion 89 is located vertically lower than the through-hole 88 of the second vertical portion 86. This prevents wind and rain from blowing lateral directions directly into the ventilation structure 6b.

By positioning the front curtain portion 89 at a predetermined distance outward from the second vertical portion 86 via the connecting portion 87 in this manner, turbulence is generated in the air flowing into the space between the front curtain portion 89 and the second vertical portion 86, as shown by arrow 84 in Figure 7. This has a synergistic effect, combined with the fact that the through-holes 88 in the second vertical portion 86 are formed in the lower half of the second vertical portion 86 in the vertical direction, to further prevent rainwater from entering.

Next, Figure 8 is a cross-sectional view showing the fit of a ventilation structure according to the fourth embodiment of the present invention when used under the fascia of a house.

Referring to the same figure, the ventilation structures 7a and 7b have the same structure as the ventilation structures 6a and 6b according to the third embodiment described above. Furthermore, like the ventilation structures 5a and 5b according to the second embodiment described above, they are installed above the exterior wall materials 45a and 45b via single hat joiners 32a and 32b.

In this way, even in ventilation structures 7a and 7b equipped with front sections 99a and 99b, it is possible to caulk using single-hat joiners 32a and 32b.

In the above embodiments, the capping and ventilation structure frames are made of steel plate, but they may be made of other materials. For example, they may be made of aluminum or synthetic resin. They may also be molded integrally by extrusion molding.

In addition, while the ventilation member in each of the above embodiments has a specific configuration, it may have any other configuration as long as it includes a first baffle plate with a first ventilation hole formed therein and a second baffle plate with a second ventilation hole formed therein, disposed a predetermined distance outward from the first baffle plate. For example, one example is a structure in which two longitudinally extending steel plates with ventilation holes formed therein are fixed to the inside of the frame at a predetermined distance apart.

Furthermore, in each of the above embodiments, the through-holes are provided in the vertically lower half region of the second vertical portion, but they may also be provided in other locations on the second vertical portion.

Furthermore, in each of the above embodiments, the frame body is provided with a second horizontal portion, but the second horizontal portion may not be provided, and the first and second baffles may be fixed to the upper part of the frame body, for example.

Furthermore, in each of the above embodiments, a drain hole is formed at the connection point between the second vertical section and the second horizontal section, but it is not necessary to form a drain hole. Alternatively, a drain hole may be provided in another location.

Furthermore, while the first and third embodiments described above use cushioning made of a specific material, the cushioning may be made of other materials as long as it is elastically deformable and can fill the space between the ventilation member and the exterior wall material.

Furthermore, in each of the above embodiments, the first vertical portion of the frame body was installed by inserting it into the gap between the exterior wall base material and the furring strip, but it may be installed in other ways as long as its position can be fixed.

Furthermore, in each of the above embodiments, the cross-sectional shape of the top plate in the short direction was specific, but other shapes are also acceptable as long as they can guide rainwater, etc. falling from above downward and prevent water from accumulating above the top plate.

Furthermore, in each of the above embodiments, the outer surface of the front flap of the ventilation member and the inner surface of the first side wall of the capping cover may be liquid-tightly joined using adhesive, double-sided tape, or the like. By configuring it in this way, even if rainwater attempts to blow horizontally or diagonally downward toward the capping structure and seeps in through the folded portion, the water will flow upward between the outer surface of the front flap and the inner surface of the capping end due to surface tension, etc., preventing water from seeping into the space under the capping.

Furthermore, in each of the above embodiments, the end of the coping and the front section of the ventilation structure are attached with screws, but other attachment means may also be used.

Furthermore, in each of the above embodiments, the first horizontal section, second horizontal section, and connecting section are inclined downward at a specific angle toward the outside, but they may be inclined downward at a different angle so that water that seeps in through the through-holes can be discharged to the outside through the drainage holes. They may also be provided horizontally without being inclined downward.

Furthermore, in each of the above embodiments, the structure of the portion below the fascia board is specific, but other structures are also acceptable as long as the portion is located between the exterior wall material and the fascia board installed above it.

Furthermore, in each of the above embodiments, the frame of the ventilation member has a specific structure, but it may have a different structure.

Furthermore, in each of the above embodiments, the lower end of the adjoining portion is located below the through-hole of the second vertical portion, but it does not have to be located so far below.

Furthermore, in each of the above embodiments, the portion on the inside of the horizontal section where the ventilation member is not installed is bent upward at a specific angle, but it may be bent at a different angle. Also, this portion may not be present.

Furthermore, in each of the above embodiments, the ventilation member is arranged so as to be enclosed within the frame body, but as long as the position of the ventilation member can be fixed, there are no restrictions on its position relative to the frame body.

Furthermore, in each of the above embodiments, the ventilation structure was used in a specific area under the fascia board, but the ventilation structure can also be used in other areas such as the eaves, gable side, and eaves side.

Furthermore, in the third and fourth embodiments described above, a buffer body was provided inside the cap, but the buffer body may have other configurations, such as a metal support body. Also, a support structure such as a buffer body may not be provided.

Furthermore, while the second and fourth embodiments described above feature a single-hat joiner with a specific configuration, a single-hat joiner does not necessarily have to be used.

Furthermore, in each of the above embodiments, a pair of ventilation structures was provided in the coping structure, but for exterior wall materials or structures in which the ventilation passage exists only on one side, for example, the ventilation member may exist only on one side.

Furthermore, in each of the above embodiments, the space inside the frame is connected to the ventilation passage of the furring strip by a specific means, but other means may be used to discharge moisture and air into the ventilation passage. Also, the space inside the frame does not need to be connected to the ventilation passage of the furring strip.

DESCRIPTION OF SYMBOLS 1... Cap structure 4, 5, 6, 7... Ventilation structure 12... Frame body 13... Ventilation member 14... First vertical section 15, 85... First horizontal section 16, 86... Second vertical section 17... Second horizontal section 18, 88... Through hole 19... Drain hole 22... Cushioning material 24... First baffle plate 25... First ventilation hole 26... Second baffle plate 27... Second ventilation hole 41... Exterior wall base material 42... Furring strip 45... Exterior wall material 51... First U-shaped member 52, 62, 72... Vertical surface portion 53, 63... Upper surface portion 54, 64... Lower surface portion 55, 65, 75... Cut-out hole 56, 66, 76... Open side 61... Second U-shaped member 71... Third U-shaped member 87... Connecting portion 89, 99... Front section. Note that the same symbols in each figure indicate the same or corresponding parts.

Claims (8)

A ventilation structure installed above an exterior wall material and extending in a longitudinal direction,
a frame body including a first vertical section that extends vertically in an installed state, a first horizontal section that extends from an upper end of the first vertical section toward the outdoors, and a second vertical section that extends vertically downward from a part of the first horizontal section and has a through hole formed therein;
a ventilation member having a ventilation function from indoors to outdoors and a waterproof function within the frame body,
The ventilation member includes a first baffle plate extending vertically across the ventilation path from the indoors to the outdoors and having a first air vent formed therein, and a second baffle plate extending vertically outward from the first baffle plate at a predetermined interval and having a second air vent formed therein. The ventilation member is configured by combining three U-shaped members,
the U-shaped member has a cross-sectional shape in a short side direction that is substantially U-shaped and includes a vertical surface portion, an upper surface portion, and a lower surface portion;
The vertical surface portion has a plurality of cut-out holes formed at predetermined intervals in the longitudinal direction, the cut-out holes rising toward the open side in the cross-sectional shape in the short side direction,
The three U-shaped members are:
a first U-shaped member with an open side facing the outdoors;
a second U-shaped member whose open side faces the first U-shaped member and whose upper surface portions overlap with each other and whose lower surface portions overlap with each other;
2. The ventilation structure according to claim 1, further comprising: a third U-shaped member whose open side faces outdoors and whose vertical surface portions are in contact with the second U-shaped member and whose cut-out holes are aligned with each other. A ventilation structure according to claim 1 or claim 2, wherein the through-hole is provided in the vertically lower half region of the second vertical portion. The frame body further includes a second horizontal portion extending from a lower end of the second vertical portion toward the indoor side,
The ventilation structure according to claim 1 , wherein the ventilation member is fixed to the second horizontal portion. The ventilation structure of claim 4, further comprising a drain hole provided at the connection between the second vertical section and the second horizontal section, for draining infiltrated rainwater to the outside. A ventilation structure as described in any one of claims 1 to 5, further comprising a front portion extending vertically outward from the second vertical portion at a predetermined distance, and a connecting portion connecting the first horizontal portion and the front portion. A ventilation structure according to any one of claims 1 to 6, further comprising an elastically deformable cushioning material installed between the ventilation member and the exterior wall material. The exterior wall material is attached via a furring strip attached to the outer surface of the exterior wall base material,
The ventilation structure according to any one of claims 1 to 7, wherein the first vertical portion of the frame body is installed so as to be inserted into a gap between the exterior wall base material and the furring strip.