JP7000228B2 - Attic ventilation structure and ventilation members - Google Patents

Description

The present invention relates to an attic ventilation structure and a ventilation member having a ventilation path for ventilation between the attic and the outside air.

In the conventional structure of the eaves related to the installation of the eaves ceiling, a structure having a ventilation structure between the attic and the outside air is required in order to prevent deterioration of the attic and legally required. As an example of the eaves structure having a ventilation structure, those disclosed in Patent Document 1 (Japanese Unexamined Patent Publication No. 2013-147818) are known.

Patent Document 1 describes an upper surface portion and a lower surface portion in which a vent is formed on the back surface side of a plate-shaped main body made of a ceramic material, an intermediate portion connecting the upper surface portion and the lower surface portion, and the plate-shaped main body. A decorative member having a locking portion for connecting to a lower position on the back surface side of the eaves and having a ventilation fitting made of a substantially U-shaped thin plate-shaped material is attached to the upper part of the outer wall under the eaves in the middle of the ventilation fitting. A ventilation structure is described in which the portions are arranged so as to be in contact with each other.

Japanese Unexamined Patent Publication No. 2013-147818

However, in the ventilation structure described in Patent Document 1, since the intermediate portion of the ventilation fitting provided so as to project from the back surface of the plate-shaped main body is arranged so as to be in contact with the outer wall, the ventilation member itself is arranged from the outer wall to the gable side. It should be arranged so that it protrudes.

Therefore, it is difficult to use the ventilation structure described in Patent Document 1 when a structure without eaves is adopted because a step is formed on the outer wall. Further, since the decorative board described in Patent Document 1 uses a ceramic material, the problems of design and luxury can be solved, but the amount of the ventilation fitting protruding toward the back surface side of the plate-shaped main body is increased. At the same time, it is necessary to adjust the depth dimension width with the lining material on the gable side of the rafter to which the decorative board is fixed and the outer wall.

Therefore, the technical problem to be solved by the present invention is to provide an attic ventilation structure and a ventilation member which can be easily constructed and can ventilate between the attic and the outside air.

The present invention provides an attic ventilation structure and a ventilation member having the following configurations in order to solve the above technical problems.

According to the first aspect of the present invention, a ventilation member arranged between the decorative board fixed to the end face of the rafter and the outer wall and capable of forming a ventilation path between the attic and the outside air, and along the surface of the decorative board. A waterproof lamella that extends from the roof to the underside of the interface between the ventilator and the veneer.
The ventilation member is
A plate-shaped front opening extending along the outer surface of the outer wall and provided with a ventilation opening for the ventilation path, and a metal front opening.
An upper baffle plate portion having an upper baffle plate connected to the depth side of the front opening and extending downward, and an upper baffle plate portion.
Ventilation having a lower baffle plate portion connected to the depth side of the front opening, arranged so as to be in contact with the upper end of the outer wall, and having a lower baffle plate extending upward at a depth position different from that of the upper baffle plate. With the main body member
Provided is an attic ventilation structure characterized by having a fireproof inorganic plate material placed on the upper side of the upper obstacle plate portion of the ventilation main body member.

According to the second aspect of the present invention, the ventilation main body member further has a plate material engaging portion extending above the upper obstruction plate portion along the front opening and engaging with the upper surface of the fireproof inorganic plate material. The first aspect of the attic ventilation structure is provided.

According to the third aspect of the present invention, the upper baffle plate portion has a horizontal portion that supports the fireproof inorganic plate material and has a back end connected to the upper baffle plate. A second aspect of the attic ventilation structure is provided.

According to the fourth aspect of the present invention, the fireproof inorganic plate material is fixed to the ventilation main body member in a state of being sandwiched between the horizontal portion of the upper obstruction plate portion and the plate material engaging portion. A third aspect of the attic ventilation structure is provided.

According to the fifth aspect of the present invention, the lower baffle plate portion has a plate material mounting surface configured in a flat plate shape so as to support the fireproof inorganic plate material on the upper side of the lower baffle plate. Provided is an attic ventilation structure according to any one of the first to fourth aspects, characterized in that a vent is provided in the lower baffle plate.

According to the sixth aspect of the present invention, any one of the first to fifth aspects, wherein the ventilation opening provided in the front opening extends downward from the lower obstruction plate . Provides one attic ventilation structure.

According to the seventh aspect of the present invention, the front opening, the lower baffle plate portion, and the upper baffle plate portion are integrally configured by bending one metal thin plate. Provided is an attic ventilation structure according to any one of the first to sixth aspects.

According to the eighth aspect of the present invention, a decorative plate fixed to the end surface of the rafter, a waterproof thin plate extending downward from the roof on the surface of the decorative plate, and an outer wall configured on substantially the same surface as the waterproof thin plate are formed. In an attic ventilation structure having no eaves provided, it is a ventilation member that is arranged between the veneer and the outer wall and can form a ventilation path between the attic and the outside air.
The ventilation member is
A plate-shaped front opening extending along the outer surface of the outer wall and provided with a ventilation opening for the ventilation path, and a metal front opening.
An upper baffle plate portion having an upper baffle plate connected to the depth side of the front opening and extending downward, and an upper baffle plate portion.
Ventilation having a lower baffle plate portion connected to the depth side of the front opening, arranged so as to be in contact with the upper end of the outer wall, and having a lower baffle plate extending upward at a depth position different from that of the upper baffle plate. With the main body member
It has a fire-prevention inorganic plate material placed on the upper side of the upper obstruction plate portion of the ventilation main body member.
Provided is a ventilation member, characterized in that the boundary with the decorative plate is concealed by a waterproof thin plate.

According to the present invention, the attic and the outside air can be ventilated through the gap by the ventilation member arranged so as to close the gap between the decorative board and the outer wall from the outside. Further, the ventilation member is excellent in weather resistance because the ventilation main body member is made of metal. Further, an inorganic fireproof plate material is provided on the upper side of the ventilation main body member, that is, between the ventilation main body member and the decorative plate, and the fire protection performance can be improved, and the fireproof main body member is arranged along the surface of the decorative plate. Due to the characteristics of the material of the inorganic plate material for fire protection, the problem of appearance can be solved by concealing the boundary portion with the decorative plate with a waterproof thin plate without applying a seal.

Further, since the inorganic plate material for fire prevention is made of an inorganic material and does not easily transfer heat, it is possible to suppress the temperature rise of the decorative plate.

Further, a lower baffle plate member and an upper baffle plate member are provided, whereby rainwater or the like blown from the ventilation opening is prevented from entering the inside of the outer wall.

Further, the ventilation fitting may be attached by fitting the lower obstruction plate member and the upper obstruction plate member into the gap between the decorative plate and the outer wall and fixing them, so that the construction is easy and the installation is easy. ..

As a result, the construction procedure is easy, and for example, there is no eave where the outer surface of the decorative board fixed to the end face of the rafter and the outer wall arranged at a vertical interval from the decorative board is substantially the same surface. It is possible to provide an attic ventilation structure that can be ventilated between the attic and the outside air, which can be applied even in the configuration.

It is a figure which shows the example of the house which used the attic ventilation structure which concerns on embodiment of this invention. It is sectional drawing which shows the example of the attic ventilation structure which used the ventilation member which concerns on 1st Embodiment of this invention. It is a partial cross-sectional perspective view which shows the structure of the gable side outer wall of FIG. It is a perspective view which shows the structure of the ventilation member which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the structure of the ventilation member of FIG. It is an enlarged view of the VI part of the attic ventilation structure of FIG. It is an enlarged sectional view which shows the example of the attic ventilation structure which used the ventilation member which concerns on 2nd Embodiment of this invention.

Hereinafter, the ventilation member according to the embodiment of the present invention and the attic ventilation structure using the ventilation member will be described with reference to the drawings.

FIG. 1 is a diagram showing an example of a house in which a ventilation member according to an embodiment of the present invention is used. The ventilation member 1 according to the present embodiment is used for the attic ventilation structure 50 capable of ventilation between the attic and the outside air. The ventilation member 1 is between the gable side decorative plate 102 of the roof 101 of the house 100 and the gable side outer wall 103, or between the flat side decorative plate 104 of the roof 101 of the house 100 and the flat wall 105 which is the flat side outer wall. It is attached to the gap 17 (see FIG. 3) formed between them. Hereinafter, the case where the ventilation member 1 of the present invention is attached to the wife side will be described, but the basic configuration is the same even when the ventilation member 1 is attached to the flat side.

(First Embodiment)
FIG. 2 is a cross-sectional view showing an example of an attic ventilation structure in which the ventilation member according to the first embodiment of the present invention is used. FIG. 3 is a partial cross-sectional perspective view showing the configuration of the outer wall on the gable side of FIG. FIG. 2 describes an attic ventilation structure using a ventilation member on the gable side as an example, and corresponds to a cross-sectional view taken along the line II-II of FIG.

In the attic ventilation structure 50 according to the present embodiment, the ventilation member according to the present invention is used on the gable side as described above. In the attic ventilation structure 50 according to the present embodiment, the field board 4 is laid on the rafters 3 and the roof decorative material 5 such as roof tiles is placed on the rafters 3. A draining plate 6 is provided at the tip of the field plate 4.

A gable side decorative board 102 is provided on the tip end side of the rafter 3. The gable side decorative board 102 is provided in a direction intersecting the extending direction of the rafters 3 so as to straddle the plurality of rafters 3. The gable side decorative board 102 is fixed to the rafter 3 with a screw (not shown) or the like. The fixing is not limited to screws, and fixing members such as nails, screws, and metal fittings can be used.

The gable side decorative board 102 has a base material 7 provided at the tip of the rafters and a decorative material 8 arranged on the surface side of the base material 7. Wood or the like is used as the base material 7, and a ceramic material or the like can be preferably used as the decorative material 8. As the ceramic material, for example, a cement-based extruded body made of an inorganic material and preferably having a specific gravity of about 0.75 to 2.0 can be used. In the gable side decorative board 102, the base material 7 can be omitted, and the decorative material 8 can be directly attached to the rafters 3.

A waterproof thin plate 22 is arranged on the surface of the decorative material 8 of the gable side decorative plate 102. The details of the waterproof thin plate 22 will be described later.

The gable-side outer wall 103 is fixed to a pillar 9 arranged at a predetermined interval and a gable beam 10 arranged horizontally at the upper end of the pillar 9. A ceiling 11 is provided between the pillar 9 and the end beam 10. The space between the ceiling 11 and the field board 4 is the attic 2. Further, the inner wall 12 is arranged inside the pillar 9, that is, on the indoor side. The inside of the inner wall 12 is a living space 12a.

The gable side outer wall 103 is configured by laminating a base plywood 13, a ventilation furring edge 14, and a siding material 15. The base plywood 13 is made of thin wood fixed to the pillar 9, and a moisture-proof sheet 13a is attached to the surface thereof. The thickness dimension of the base plywood 13 can be, for example, about 9 mm.

As shown in FIG. 3, the ventilation furring strips 14 are arranged on the outer surface of the base plywood 13 at predetermined intervals. The space between the ventilation furring strips 14 becomes the ventilation passage 16 inside the wall of the gable side outer wall 103. The thickness dimension of the ventilation furring strip 14 can be, for example, about 15 mm.

The siding material 15 is arranged on the outermost exterior of the outer wall on the gable side. As the siding material 15, for example, the same material as the decorative material 8 of the gable side decorative board 102 can be used. The thickness dimension of the siding material 15 can be, for example, about 16 mm.

In the present embodiment, the siding material 15 has a slight step on the upper end side as compared with the base plywood 13 and the ventilation furring strip 14, and the seal filling space 15a is formed at the upper end. The seal filling space 15a is used for fixing the ventilation member 1 described later. Further, the seal filling space 15a is filled with a seal material 15b in order to conceal the fixing portion 39 of the ventilation member 1 described later.

In the present embodiment, the outer surfaces of the gable-side outer wall 103 and the gable-side decorative plate 102 are substantially flush with each other. That is, the house 100 according to the present embodiment is a house having no eaves. In order to make the outer surfaces of the gable side outer wall 103 and the gable side veneer 102 flush with each other, for example, the thickness dimensions of the base material 7 of the gable side veneer 102 and the base plywood 13 of the gable side outer wall 103 may be adjusted. ..

Further, a gap 17 is provided between the gable side outer wall 103 and the gable side decorative plate 102, and the ventilation member 1 is arranged in the gap 17. As will be described later, the ventilation member 1 may be a member having a length dimension L of about 2 to 3 m, and the gap 17 may be formed only in the portion where the ventilation member 1 is arranged.

FIG. 4 is a perspective view showing the configuration of the ventilation member 1 according to the first embodiment of the present invention. The ventilation member 1 according to the present embodiment is composed of a ventilation main body member 20 made of metal and a fire prevention inorganic plate 21 attached above the ventilation main body member 20. In the present embodiment, the length dimension L of the ventilation member 1 is 2 to 3 m. Further, the overall height dimension H1 including the ventilation main body member 20 of the ventilation member 1 and the fireproof inorganic plate material 21 corresponds to the height dimension of the gap 17. The size of the ventilation member 1 is not necessarily limited to the above size, and can be appropriately changed according to the size of the eaves structure.

The ventilation main body member 20 is formed by bending a metal plate having a certain thickness dimension. Examples of the material preferably used for the ventilation main body member 20 include stainless steel, steel, aluminum material and the like. The front surface 20a of the ventilation body member 20 is a front surface opening 24 in which a large number of ventilation openings 25 are bored. The front surface 20a may be subjected to a rust preventive treatment such as coating or a decorative treatment for improving the design surface.

Since the ventilation main body member 20 is made of metal, the weather resistance of the ventilation main body member 20 exposed to the outside can be improved.

The size and number of ventilation openings 25 are designed so that a predetermined opening area can be secured per unit length. In the present embodiment, the ventilation opening 25 is configured to have a long hole shape that is long in the vertical direction, but is not limited to the long hole shape.

In the present embodiment, the upper end of the front surface 20a of the ventilation main body member 20 is a plate material engaging portion 26 for fixing the fireproof inorganic plate material 21. The plate material engaging portion 26 is a holding plate piece 27 whose upper end is folded back in the horizontal direction, and holds the horizontal portion 28 of the upper obstruction plate portion 23, which will be described later, and the upper and lower surfaces of the fireproof inorganic plate material 21. , The fireproof inorganic plate 21 and the ventilation main body member 20 are engaged with each other.

The fireproof inorganic plate 21 is made of an inorganic material molded into a plate shape. As a material preferably used for the inorganic plate material 21 for fire prevention, a cement-based extruded body having a specific gravity of about 0.8 to 1.5 is preferably used. Specific materials used for the fireproof inorganic board 21 include ceramic materials such as fiber-mixed calcium silicate board, fiber-mixed cement calcium silicate board, fiber-reinforced cement board, lime / calcium silicate board, and hard wood piece cement board. Can be used. Since these materials have high fire protection performance and are difficult to transfer heat, it is possible to make it difficult for heat from the ventilation main body member 20 to be transmitted to the inside of the outer wall 103 on the wife side, thereby suppressing the temperature rise of the living space 12a and protecting against the cold. Performance can be improved.

As shown in FIG. 4, since the fireproof inorganic plate 21 is attached to the upper side of the ventilation main body member 20, it has substantially the same length dimension as the ventilation main body member 20. Further, the thickness dimension is preferably about 2 to 8 cm, particularly preferably about 3 to 5 cm.

The ventilation main body member 20 has an upper baffle plate portion 23 and a lower baffle plate portion 33 for fixing the fireproof inorganic plate material 21.

The upper obstruction plate portion 23 is welded to the back surface side of the front opening portion 24 and above the opening 25, and is horizontal to the horizontal portion 28 extending horizontally so as to face the holding plate piece 27 of the plate material engaging portion 26. It is a member having an L-shaped cross section having an upper baffle plate 29 whose depth side of the portion 28 is folded downward. As described above, the horizontal portion 28 and the sandwiching plate piece 27 sandwich and support the fireproof inorganic plate 21 from above and below, so that the separation distance H3 between them is equal to the thickness dimension of the fireproof inorganic plate 21. Has been done.

In the present embodiment, the upper baffle plate portion 23 is welded to the back surface side of the front opening portion 24, but for example, one metal plate continuing from the plate material engaging portion 26 may be folded back.

The lower baffle plate portion 33 is configured by folding back the back end portion of the bottom surface portion 30 extending from the lower end of the front opening portion 24. As shown in FIG. 4, the lower obstruction plate portion 33 is a horizontal portion that is continuous with the bottom obstruction plate 30 and extends vertically upward and is continuous with the lower obstruction plate 31 and is folded horizontally. The 32 and the back plate portion 34 folded downward toward the back side of the horizontal portion 32 are integrally configured.

The lower obstruction plate 31 is arranged at a depth position different from that of the upper obstruction plate 29. In the height dimension H2 of the lower obstruction plate 31, the horizontal portion 32 has the same height as the horizontal portion 28 of the plate material engaging portion 26. That is, the fireproof inorganic plate 21 is placed and supported on the horizontal portion 28 of the plate material engaging portion 26 and the horizontal portion 32 of the lower obstruction plate 31.

A plurality of ventilation holes 35 are provided in a row in the length direction at an upper position of the lower baffle plate 31. The size and number of ventilation holes 35 are designed so that a predetermined opening area can be secured per unit length. In this embodiment, the opening is a rectangle having a side of about 2 to 3 cm.

The horizontal portion 32 includes a support region 32a whose front side supports the vicinity of the rear end portion of the fireproof inorganic plate material 21, and a ventilation region 32b extending to the rear of the fireproof inorganic plate material 21. The support region 32a corresponds to an example of the plate material mounting surface of the present invention. The ventilation region 32b is provided with a rectangular ventilation port 36. The size and number of ventilation holes 36 are designed so that a predetermined opening area can be secured per unit length. In this embodiment, the opening is a rectangle having a side of about 2 to 3 cm.

The back plate portion 34 abuts on the surface of the end beam 10 to determine the attachment position of the ventilation member 1 in the depth direction. In the present embodiment, the back plate portion 34 is configured to extend downward, but may be configured to extend upward. The back surface of the back plate portion 34 may be fixed by adhering to the front surface of the end beam 10 with an adhesive or the like.

A fixing portion 39 is arranged on the lower side of the bottom surface portion 30. The fixing portion 39 abuts on the ventilation furring strip 14 located on the inner side of the seal filling space 15a. That is, the distance D from the back surface portion 34 to the fixed portion 39 is configured to be substantially equal to the thickness dimension of the base plywood 13 and the ventilation furring strip 14. As shown in FIGS. 2 and 6, the fixing portion 39 is fixed to the ventilation furring strip 14 by the fixing nail 106.

FIG. 6 is a partially enlarged view of the attic ventilation structure provided with the ventilation member 1 according to the present embodiment. As shown in FIG. 6, the ventilation member 1 arranges the ventilation main body member 20 in the gap formed between the gable side decorative plate 102 and the gable side outer wall 103. At this time, the entire opening 24 of the ventilation main body member 20 is arranged so as to be substantially flush with the surfaces of the gable side decorative plate 102 and the gable side outer wall 103.

That is, the fireproof inorganic plate 21 of the ventilation member 1 contacts the lower surface of the gable side decorative plate 102, and the bottom surface portion 30 of the ventilation member 1 contacts the upper surface of the base plywood 13 of the gable side outer wall 103 and the ventilation furring strip 14. do. As described above, the siding material 15 is configured to be lower than the base plywood 13 and the ventilation furring edge 14, so that a gap is formed between the bottom surface portion 30 and the gap functions as the seal filling space 15a.

The ventilation member 1 may be fixed by adhering the back surface of the bottom surface portion 30 to the gable side outer wall 103 with an adhesive or the like. The seal filling space 15a between the ventilation member 1 and the siding material 15 of the gable side outer wall 103 is filled with the seal material 15b. As a result, the space between the ventilation member and the outer wall 103 on the gable side is watertightly configured.

On the other hand, it is difficult to secure watertightness because it is difficult to fix the upper surface of the fireproof inorganic plate 21 and the gable side decorative plate 102 by adhesion or the like. Therefore, in the present embodiment, a waterproof thin plate 22 is provided in order to ensure waterproofing between the ventilation member 1 and the gable side decorative plate 102.

The waterproof thin plate 22 secures the waterproofness of the boundary portion 37 by concealing the boundary portion 37 between the ventilation member 1 and the gable side decorative plate 102.

The waterproof thin plate 22 is made of, for example, metal, and is located between the roof field plate 4 and the draining plate 6 along the surface of the field plate 4 from the lower surface of the field plate 4 to the surface of the gable side decorative plate 102. It is a plate-shaped member extending along the line. The lower end 22a of the waterproof thin plate 22 reaches the lower side of the boundary portion 37 between the ventilation member 1 and the gable side decorative plate 102.

As shown in FIG. 6, in the attic ventilation structure 50, as shown by an arrow 80, a ventilation path 80 for communicating the attic and the outside air is formed by the ventilation member, and ventilation can be performed between the attic and the outside air. ..

That is, the ventilation path 80 extends from the ventilation opening 25 of the ventilation main body member 20 to the back surface side of the front opening 24, passes through the gap between the upper obstacle plate 29 and the lower obstacle plate 31, and the ventilation port of the lower obstacle plate 31. It communicates to the attic through the vent 36 of the horizontal portion 32.

The gap size A between the front opening 24 and the upper baffle plate 29, the gap size B between the upper baffle plate 29 and the lower baffle plate 31, and the gap size C between the lower baffle plate 31 and the back plate portion 34 are both. It is designed so that a predetermined opening area can be secured, and may be determined from the viewpoint of the thickness dimension of the gable side outer wall 103, the opening area, and the like. In this embodiment, the gap dimension A, the gap dimension B, and the gap dimension C are all the same dimensions.

Further, the upper baffle plate 29 and the lower baffle plate 31 meander the ventilation path 80 to prevent rainwater or the like that has entered from the ventilation opening 25 from entering the attic side.

Further, since the space between the lower obstruction plate 31 and the back plate portion 34 is open without blocking the ventilation path 16 in the wall, as shown by the arrow 81, the ventilation path 16 in the wall and the attic Can ensure ventilation. Further, since the vent 35 of the lower baffle plate 31 is provided near the upper end of the lower baffle plate 31, it is possible to suppress the inflow of water into the in-wall ventilation path 16.

Further, the ventilation opening 25 of the front opening 24 is provided so that the lower end position 25a is at substantially the same height as the bottom surface portion 30, that is, from the lower obstruction plate 31 provided on the surface of the bottom surface portion 30. Is also configured to be located on the lower side. As a result, the water that has entered the ventilation path 80 is discharged to the outside through the ventilation opening 25. In addition, in order to discharge the water that has entered the ventilation path 80 more easily, the bottom surface portion 30 may be configured to be slightly inclined so that the front side is lowered.

In the attic ventilation structure according to the present embodiment, as described above, by arranging the ventilation member 1 in the gap 17 between the gable side decorative plate 102 and the gable side outer wall 103, the ventilation path 80 provided in the ventilation member 1 is provided. It is configured so that the attic and the outside air can be ventilated. On the other hand, the ventilation path meanders due to the plurality of baffle plates provided on the ventilation member 1, and it is possible to prevent the sudden blowing of air and prevent rainwater from entering the attic.

Further, by making the ventilation main body member 20 made of metal, the weather resistance of the ventilation main body member 20 exposed to the outside can be improved, while the fireproof inorganic plate material 21 is made of a cement-based material to make ventilation. It is possible to make it difficult for the heat from the main body member 20 to be transferred to the inside of the outer wall 103 on the wife side. As a result, it is possible to suppress the temperature rise of the living space 12a and improve the cold protection performance.

Further, by providing the waterproof thin plate 22 extending from the roof to the lower side of the boundary portion 37 along the gable side decorative plate 102, the boundary portion 37 between the ventilation member 1 and the gable side decorative plate 102 is provided depending on the material and structural factors. Can ensure waterproofness.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. FIG. 7 is an enlarged cross-sectional view showing an example of an attic ventilation structure 51 in which the ventilation member 41 according to the second embodiment of the present invention is used. The ventilation member 41 according to the present embodiment is arranged in the gap 17 between the gable side outer wall 103 and the gable side decorative plate 102, similarly to the ventilation member 1 according to the first embodiment. Further, it is composed of a ventilation main body member 20 made of metal and a fire prevention inorganic plate material 21 provided on the upper side of the ventilation main body member 20. Hereinafter, the differences from the ventilation member 1 according to the first embodiment will be mainly described, and the common parts will be omitted.

The ventilation main body member 20 is different from the first embodiment in that the ventilation main body member 20 is formed by bending a metal plate having a certain thickness dimension, and the bottom plate portion 30 is provided with the second lower obstruction plate 38.

The second lower baffle plate 38 is a plate-shaped member welded at a depth position between the front baffle plate 24 and the upper baffle plate 29 and provided substantially parallel to the front opening 24. The second lower obstruction plate 38 extends upward in the vertical direction, and its height is configured such that the upper end portion 38a thereof is higher than the lower end portion 29a of the upper obstruction plate 29.

The ventilation member 41 has a ventilation path for communicating the attic and the outside air, and by using this ventilation member 41 in the attic ventilation structure, ventilation between the attic and the outside air can be performed.

Further, since the upper obstruction plate 29 and the second lower obstruction plate 38 are configured to have a length so as to overlap each other in the height direction, the ventilation path 80 meanders, and rainwater or the like infiltrated from the ventilation opening 24 etc. It is difficult to invade the attic side.

On the other hand, at the lower end position of the second lower baffle plate 38, a plurality of drain holes 40 are provided at predetermined intervals in the length direction of the ventilation member 41. The drain hole 40 can drain the water in the ventilation path to the outside.

As described above, according to the attic ventilation structure of the present embodiment, the ventilation member 1 is provided in the ventilation member 1 by arranging the ventilation member 1 in the gap 17 between the gable side decorative plate 102 and the wife side outer wall 103. The ventilation path 80 is configured to allow ventilation between the attic and the outside air. On the other hand, the ventilation path meanders due to the plurality of baffle plates provided on the ventilation member 1, and it is possible to prevent the sudden blowing of air and prevent rainwater from entering the attic.

The present invention is not limited to the above embodiment, and can be implemented in various other embodiments.

For example, the ventilation member of the present invention is not limited to the gable side of the above embodiment, and can be used on the flat side as well.

Further, in each of the above embodiments, the number of upper baffle plates is only one, but there may be a plurality of them. Further, the number of lower baffle plates may be three or more. The number of these baffle plates can be determined based on the opening area of the ventilation path and the like.

1,41 Ventilation member 2 Roof lining 3 Taruki 4 Field board 5 Roof decorative material 6 Draining board 7 Base material 8 Decorative material 9 Pillar 10 Wife beam 11 Ceiling 12 Inner wall 12a Living space 13 Base plywood 13a Moisture-proof sheet 14 Ventilation furring strip 15 Siding material 15a Seal filling space 16 Ventilation path in the wall 17 Gap 20 Ventilation body member 20a Front surface of ventilation body member 21 Fireproof inorganic plate 22 Waterproof thin plate 22a Waterproof thin plate lower end 23 Upper obstacle plate part 24 Front opening 25 Ventilation opening 26 Plate material engaging part 27 Holding plate piece 28 Horizontal part 29 Upper obstruction plate 29a Upper obstruction plate lower end part 30 Bottom part 31 Lower obstruction plate 32 Horizontal part 32a Support area 32b Ventilation area 33 Lower obstruction plate part 34 Back plate part 35 Vent 36 Vent 37 Boundary part 38 Second lower side obstacle plate 39 Fixed part 40 Drain hole 50, 51 Roof ventilation structure 80, 81 Ventilation route 100 House 101 Roof 104 Flat side decorative board 105 Flat wall 102 Wife side decorative board 103 Wife side outer wall 106 Fixed nail

Claims (8)

A ventilation member arranged between the decorative board fixed to the end face of the rafter and the outer wall and capable of forming a ventilation path between the attic and the outside air, and a ventilation member arranged along the surface of the decorative board and from the roof to the ventilation member. A waterproof thin plate extending to the lower side of the boundary portion of the decorative plate is provided.
The ventilation member is
A plate-shaped front opening extending along the outer surface of the outer wall and provided with a ventilation opening for the ventilation path, and a metal front opening.
An upper baffle plate portion having an upper baffle plate connected to the depth side of the front opening and extending downward, and an upper baffle plate portion.
Ventilation having a lower baffle plate portion connected to the depth side of the front opening, arranged so as to be in contact with the upper end of the outer wall, and having a lower baffle plate extending upward at a depth position different from that of the upper baffle plate. With the main body member
An attic ventilation structure comprising: an inorganic plate material for fire prevention placed on the upper side of an upper obstruction plate portion of the ventilation main body member. The first aspect of the present invention is characterized in that the ventilation main body member further extends above the upper baffle plate portion along the front opening and further has a plate material engaging portion that engages with the upper surface of the fireproof inorganic plate material. Described attic ventilation structure. The attic ventilation structure according to claim 2 , wherein the upper obstruction plate portion has a horizontal portion that supports the fire-prevention inorganic plate material and has a back end connected to the upper obstruction plate. The third aspect of the present invention is characterized in that the inorganic plate material for fire prevention is fixed to the ventilation main body member in a state of being sandwiched between the horizontal portion of the upper obstruction plate portion and the plate material engaging portion. Described attic ventilation structure. The lower baffle plate portion has a plate material mounting surface configured in a flat plate shape so as to support the fireproof inorganic plate material on the upper side of the lower baffle plate, and the lower baffle plate is provided with a vent. The attic ventilation structure according to any one of claims 1 to 4, wherein the attic ventilation structure is characterized by the above. The attic ventilation structure according to any one of claims 1 to 5, wherein the ventilation opening provided in the front opening extends downward from the lower obstacle plate . The front opening, the lower baffle plate portion, and the upper baffle plate portion are integrally configured by bending one metal thin plate, according to any one of claims 1 to 6. Described attic ventilation structure. Attic ventilation structure without eaves provided with a decorative plate fixed to the end face of the rafters, a waterproof thin plate extending downward from the roof on the surface of the decorative plate, and an outer wall configured on substantially the same surface as the waterproof thin plate. In the ventilation member, which is arranged between the decorative plate and the outer wall and can form a ventilation path between the attic and the outside air.
The ventilation member is
A plate-shaped front opening extending along the outer surface of the outer wall and provided with a ventilation opening for the ventilation path, and a metal front opening.
An upper baffle plate portion having an upper baffle plate connected to the depth side of the front opening and extending downward, and an upper baffle plate portion.
Ventilation having a lower baffle plate portion connected to the depth side of the front opening, arranged so as to be in contact with the upper end of the outer wall, and having a lower baffle plate extending upward at a depth position different from that of the upper baffle plate. With the main body member
It has a fire-prevention inorganic plate material placed on the upper side of the upper obstruction plate portion of the ventilation main body member.
A ventilation member, characterized in that the boundary with the decorative plate is concealed by a waterproof thin plate.

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