JP3465008B2 - Waterproof ventilation member for building and roof ventilation structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof ventilation member for a building for preventing ventilation of rainwater and ensuring ventilation to dehumidify and cool the back of a hut, and a building using the waterproof ventilation member. Roof ventilation structure of.

[0002]

2. Description of the Related Art In recent years, in many buildings, the air-cooling effect saves the electricity bill of the air conditioner to contribute to energy saving, or in order to dehumidify the attic, the gap between the outer wall and the inner wall, especially the roof. Attempts have been made to distribute a large amount of air flow through the ventilation layer. In order to increase the flow rate of air flow in the attic ventilation layer, it is conceivable to increase the opening area where the outside air penetrates, but if the opening area is simply increased, the intrusion of rainwater is unavoidable and the cause of rain leakage. It is clear that

The present inventors have already proposed a top surface 22 and a bottom surface 23 as shown in FIG. 2 (a) as a waterproof ventilation member that ensures the ventilation of the attic or the attic ventilation layer while preventing the entry of rainwater and the like. A gallery 21 in which staggered cylinders 24 are arranged between
At the same time, it proposes a building ventilation structure in which the gallery is installed near the building on the roof surface of the building (Patent No. 2).
677319).

The louver 21 prevents linear intrusion of rainwater by the columnar bodies 24 arranged in a zigzag pattern as shown by the arrow X even when rainwater blows in due to a storm or the like. It is configured so that rainwater can be prevented from penetrating through the building and entering the building. In fact
The maximum wind speed during a storm is about 30 to 40 m / s, whereas the measured limit wind speed that can prevent the leak of the galleries is about 85 m / s, so there is no intrusion of rainwater under natural conditions. .

The louver 21 is also effective against intrusion of snowflakes. As shown in FIG.
Since the airflow W in which the snowflakes are blown inside goes around backward along the cylindrical body 24, the snowflakes 26 are caught in the airflow W ′ and are accumulated behind the cylindrical body 24. Even when the snowflakes pass through the columnar bodies 24a in the first row, similar phenomena occur in the columnar bodies 24b in the second row and the columnar bodies 24c in the third row, so that the snowflakes are prevented from entering the building.

[0006]

However, as a result of further research conducted by the present inventors, it was found that there is room for improvement in the gallery as described below. That is, in the above-mentioned galleries, the cylindrical bodies are arranged in a staggered manner, and the outside air cannot flow in linearly, and the flow velocity is greatly reduced and turbulent. Therefore, the wind speed of the airflow coming from the outside that most affects the ventilation capacity of the building is reduced, and it is difficult to say that it is still sufficient in terms of ventilation and ventilation capacity.

The waterproof ventilation member having such a structure cannot provide sufficient ventilation when the ventilation depends on the temperature difference pressure,
Ventilation can be sufficiently secured if forced exhaust is performed by a fan, but operating costs are incurred. The present invention has been made in view of the above problems of the prior art,
The purpose is to prevent rainwater from entering, to ensure ventilation inside and outside the building without using forced exhaust, and to dehumidify and cool the attic. It is intended to provide a waterproof ventilation member for a building and a roof ventilation structure for a building using the waterproof ventilation member.

[0008]

That is, according to the present invention, an upper plate and a lower plate that are parallel to each other, and one that is sandwiched between the upper plate and the lower plate and that is parallel to the upper plate and the lower plate. A ventilation block having a large number of through-holes formed in the same direction, and disposing a plurality of ventilation blocks discontinuously through at least two voids with respect to the direction of the through-hole to prevent rainwater from entering. While being a waterproof ventilation member for a building for ensuring ventilation, the building is characterized in that each of the ventilation blocks is formed so that the through hole becomes shorter from the upper plate side toward the lower plate side. A waterproof ventilation member is provided.

In the waterproof ventilation member of the present invention, it is preferable to dispose a plurality of ventilation blocks discontinuously through at least three voids in the direction of the through hole. Has a trapezoidal shape with an upper bottom and a lower plate as a lower base and a bottom angle of 90 ° or less, and the side shape of each ventilation block is a double bottom angle 90 with the upper plate side being the lower base and the lower plate side being the upper base.
It is preferable to have a trapezoidal shape of not more than °.

Further, in the waterproof ventilation member of the present invention, it is preferable that the upper plate and the lower plate are constituted by plate-shaped members in which staggered columnar members are arranged between the top surface and the bottom surface. Of the plurality of ventilation blocks that form the member, those that are located other than both ends of the waterproof ventilation member are formed by stacking plate-like bodies in which staggered cylinders are arranged between the top surface and the bottom surface. It is preferable.

Further, according to the present invention, there is provided a roof ventilation structure for a building in which two sets of the waterproof ventilation members are arranged on each inclined surface of a roof having two inclined surfaces, and each waterproof ventilation member is provided. The through-hole direction of the roof is aligned with the roof inclination direction, and the two waterproof ventilation members are arranged on each inclined surface near the ridge in an inverted V shape or a C shape centering on the ridge. A roof ventilation structure for a building is provided.

Further, according to the present invention, there is provided a roof ventilation structure for a building in which a set of four waterproof ventilation members is arranged on each inclined surface of a roof having four inclined surfaces. The through-hole direction is aligned with the roof inclination direction, and the side surfaces of the four waterproof ventilation members are airtightly abutted to form a frame shape and are arranged on each inclined surface near the ridge or roof apex. A roof ventilation structure for a building is provided.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the waterproof ventilation member of the present invention, a plurality of ventilation blocks in which a large number of through holes are formed are discontinuously arranged through at least two voids in the direction of the through holes. In addition, each of the ventilation blocks is characterized in that the through hole is shortened from the upper plate side toward the lower plate side. ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to improve breathability and ventilation capacity, preventing an intrusion of rainwater etc.

Hereinafter, an example of the waterproof ventilation member of the present invention will be outlined, and its effect will be described by using an example of a roof ventilation structure in which the waterproof ventilation member is arranged on the roof portion of a building. However, the present invention is not limited to these examples.

As shown in FIG. 3A, the waterproof ventilation member 31 of the present invention includes an upper plate 32 and a lower plate 33 which are parallel to each other.
And a plurality of ventilation blocks 34 sandwiched between the upper plate 32 and the lower plate 33.

The shape of the upper plate 32 and the lower plate 33 is not particularly limited as long as it is a plate-shaped member that can hold the ventilation block 34, but a plate in which staggered columnar members are arranged between the top surface and the bottom surface. It is preferably composed of a sheet. For example, if a structure similar to the conventional gallery 21 shown in FIG. 2 is used as an upper plate and a lower plate as a plate body having a thickness of 3 to 5 mm, ventilation can be ensured even in the upper plate 32 and the lower plate 33, and rainwater can be secured. This is because it is possible to prevent the intrusion of

It should be noted that even though the ventilation is ensured, it is not preferable to form a linear through hole in the upper plate 32 and the lower plate 33 in the same direction as the ventilation block 34. This is because the upper plate 32 and the lower plate 33 cannot have voids in the middle, and rainwater may enter.

The ventilation block 34 has a structure in which a large number of linear through holes 35 are formed in one direction parallel to the upper plate 32 and the lower plate 33, and the through holes 35 ensure ventilation in the one direction. There is. The hole shape of the through hole 35 is not particularly limited, and for example, a circle, a triangle, a quadrangle, a hexagon or the like can be used.

The hole diameter (diameter) of the through hole 35 should be determined by the balance between the waterproof effect and the air permeability, but rainwater droplets will not be entrained in the airflow as droplets, and will be ensured within the through hole. Since the limit that can be trapped in is 6 mm or less, the hole diameter is preferably 3 to 5 mm. Also,
The number of through holes 35 per unit area varies depending on the hole diameter, but it is usually preferable to be about 4 to 9 holes / cm ² .

In the waterproof ventilation member of the present invention, each ventilation block needs to be formed so that the through hole becomes shorter from the upper plate side toward the lower plate side. For example, also in the example of FIG. 3, four ventilation blocks 34 are discontinuously arranged through three void portions 36 in the direction of the through hole 35, and each ventilation block 34 is arranged from the upper plate 32 side to the lower plate 33. The through hole 35 is formed so as to become shorter toward the side.

The side shape of the ventilation block 34 is not particularly limited as long as the conditions are satisfied, but as shown in FIG. 3A, the upper plate 32 side is the lower bottom and the lower plate 33 side is the upper bottom. It is preferable that the trapezoid has an angle of 90 ° or less. This is because it is easy to hold it between the upper plate 32 and the lower plate 33 and the strength can be secured. As shown in FIG. 3 (c), the upper plate 32 may be a triangle having a base angle of 90 ° or less, but the lower plate 33 side needs to be welded or welded.

Similarly, the shape of the side surface of the void portion 36 is not particularly limited, and may be, for example, as shown in FIG. 3B, a triangle having the bottom plate 33 as the base and having a bottom angle of 90 ° or less. However, as shown in FIG. 3A, it is preferable that the upper plate 32 has an upper base and the lower plate 33 has a lower base, and a trapezoidal shape having a bottom angle of 90 ° or less. By making the trapezoidal shape, that is, the area of the lower surface of the void 36 large, the water mass that has dropped onto the surface is sufficiently diffused to form a thin water layer. Therefore, the water mass can be easily discharged.

In the present specification, the ventilation block 3
4. When referring to the “side surface shape” of the void 36, the upper plate 32
And the shape as viewed from a plane orthogonal to the lower plate 33 and parallel to the direction of the through hole 35.

It is necessary to form at least two or more voids 36, and the waterproof effect can be further enhanced by increasing the number of voids 36. However, if the number of the voids 36 is increased too much, the structure becomes complicated and the manufacturing becomes difficult. Therefore, from the balance of the waterproof effect and the easy manufacturing,
As shown in FIG. 3, there are preferably three voids 36.

The volume ratio between the ventilation block 34 and the void 36 is set to 0 for the purpose of facilitating the trapping of rainwater droplets, the diffusion of the water mass on the lower surface of the void and the discharge of the water mass described above.
It is preferably 7: 1 to 1: 1.

The shape of the waterproof ventilation member of the present invention is not limited to the shapes shown in FIGS. 3 (a) to 3 (c), and depending on the purpose, the ventilation block, the void, or the entire waterproof ventilation member may be formed. The shape can be changed appropriately. For example,
As shown in FIG. 4A, all the ventilation blocks 34 may have the same shape. Further, as shown in FIG. 4B, if the ventilation block 34 and the gap 36 are gradually increased toward the outside air, the waterproof effect can be further enhanced.

Further, when it is desired to improve the snowproofness of the waterproof ventilation member, as shown in FIG. 5, the waterproof ventilation member 31 is located at a position other than both ends of the waterproof ventilation member 31 in the plurality of ventilation blocks 34. It is preferable that the object 34a be a ventilation block configured by laminating plate-like bodies in which columnar bodies are arranged in a staggered manner between the top surface and the bottom surface. For example, a ventilation block may be formed by stacking the same structure as the conventional gallery 21 shown in FIG. 2 into a plate-like body having a thickness of 3 to 5 mm. This is because, as described above, the structure of the conventional gallery 21 has high snow resistance.

However, if all the ventilation blocks have such a structure, the airflow passing through the waterproof ventilation member 31 becomes turbulent and sufficient ventilation and ventilation performance cannot be obtained, so that at least both end portions of the waterproof ventilation member 31 are not obtained. It is necessary to secure the effect of rectifying the air flow as the ventilation block 34b located at 1) as a ventilation block having a linear through hole 35.

The upper plate 32, the lower plate 33 and the ventilation block 3
The material of No. 4 is preferably a material that does not easily corrode with moisture, and can be appropriately selected according to the purpose. For example, aluminum, stainless steel, ceramics, or the like can be used to enhance fireproofness, and plastic can be used to reduce manufacturing cost.

The waterproof ventilation member of the present invention may have a structure in which two waterproof ventilation members share one upper plate. With such a structure, by bending from the central portion of the upper plate, each waterproof ventilation member can be attached in an inverted V shape so as to be along the inclined surface of the roof. In this case, it is preferable to provide a folding margin of about 10 cm in the central portion of the upper plate without completely contacting the two waterproof ventilation members. This is because the upper plate is not crushed by bending and ventilation can be secured even in the upper plate portion.

Hereinafter, an example of a method for manufacturing the above-mentioned waterproof ventilation member is shown in FIG. First, a through hole 41 having a thickness of about 3 to 5 mm
5 of plastic corrugated cardboard 42 having a square hole shape
After stacking about 10 sheets, they are fixed by means of heat fusion, an adhesive or the like to form a laminated plate 43, and the laminated plate 43 is cut in an oblique direction to produce a ventilation block 44 having a trapezoidal side shape. To do.

The ventilation block 44 is arranged between the upper and lower plastic cardboards 45 and 46 in parallel so as to have a desired void shape, and then sandwiched, and heat-sealed, adhesive, double-sided tape, stapler, etc. Then, the waterproof ventilation member is fixed by the above method. In the illustrated example, as the plastic corrugated cardboard 45, 46, a plate-shaped body having staggered columnar bodies 49 arranged between the top surface 47 and the bottom surface 48 is used. Placing the plastic cardboard 42 so that the through-hole directions are orthogonal to each other, the upper plate,
It may be used as a lower plate.

The waterproof ventilation member of the present invention can be used as a roof ventilation structure for a building by arranging two waterproof ventilation members on each inclined surface of a roof having two inclined surfaces such as a gable roof. In this case, the direction of the through-hole of each waterproof ventilation member is made to coincide with the inclination direction of the roof, and the two waterproof ventilation members are arranged in an inverted V-shape or a C-shape centering on the ridge, in the vicinity of the ridge. Place on each slope.

Here, the “inverted V shape centering on the ridge” means a structure in which the edge portions of two waterproof ventilation members contact each other in the ridge portion, or the two waterproof ventilation members share the upper plate. The “C-shaped” means a structure in which the edge portions of the two waterproof ventilation members are not in contact with each other and are individually arranged on each inclined surface.

Further, a set of four waterproof ventilation members according to the present invention is arranged on each inclined surface of a roof having four inclined surfaces such as a ridge and a side roof, thereby providing a roof ventilation structure for a building. good. In this case, the direction of the through hole of each waterproof ventilation member is made to coincide with the inclination direction of the roof, and the side surfaces of the four waterproof ventilation members are in a frame shape in which the side surfaces are in airtight contact with each other,
Place on each inclined surface near the ridge or roof apex.

Here, the “frame shape in which the side surfaces of the waterproof ventilation members are in contact with each other” means a structure in which the side surfaces of the four waterproof ventilation members are in contact with each other and have a frame shape when viewed from the roof top surface side. . Since it is necessary to arrange it so as to be in close contact with the inclined surface of No. 4, it is natural that the frame has a frame shape that converges upward. Further, in order to prevent rain leakage, the side faces of the four waterproof ventilation members must be in airtight contact with each other.

[0037]

[Examples] In the following, the waterproof ventilation member of the present invention is attached to a roof portion of a building to form a roof ventilation structure, which will be described in more detail. However, the roof ventilation structure of the present invention is not limited to these examples.

(Embodiment 1) In Embodiment 1, an example of a roof ventilation structure in which the waterproof ventilation member of the present invention is arranged on a gable roof having two inclined surfaces will be described, and the effect of waterproofing and ventilation will be described. . In addition, in Example 1, a waterproof ventilation member including a ventilation block having a through hole diameter of 3 mm is used.

FIG. 1 is a side cross-sectional view of a roof ventilation structure 1 in which waterproof ventilation members 5 and 5 ′ are arranged near a ridge of a building including a purlin 2, a plain tartar 3, and a plank 4. Actually, the side surfaces of the waterproof ventilation members 5 and 5'are sealed by a plate-like body or the like not shown. In the example of FIG. 1, the waterproof ventilation member 5,
Two sets of 5'are arranged in an inverted V-shape centering on the ridge so that the directions of the through holes of the waterproof ventilation members 5, 5'match the inclination direction of the roof. Is about 20-4
It communicates with the attic 7 through a ventilation hole 6 having a width of 0 mm.

In the roof ventilation structure 1, one edge portion 8a, 8 of each of the upper plates 8 of the two waterproof ventilation members 5, 5 '.
A roof material 1 in which only a'is fixed with a tape (not shown) so as to contact each other in the ridge portion, and the lower plate 9 constitutes a roof surface
It is arranged so as to contact 0. Each member is Kasaki 11
Together with the waterproof ventilation member 5, the roof material 10, and the field board 4 are fixed to the field tree 3 by nailing.

The roof ventilation structure 1 exhibits a waterproof function by the following mechanism. Raindrops 20 during windproof rain
It collides with the windward end surface 12a of the ventilation block 12, and about 50% of it collides with the through hole. Raindrops that have entered the through hole collide with the inner wall of the through hole and are trapped.
Several irregular water masses of about 3 mm are formed to close the through holes.

The water mass blocking the through hole moves due to the pressure difference between the leeward side and the leeward side of the ventilation block 12, and flows out in a form pushed out from the leeward side end face 12b. A part of the water mass (3 to 10% of the 50% that has penetrated into the through hole) that has flowed out becomes droplets again and penetrates into the through hole of the ventilation block 14.

On the other hand, the water mass that has dropped to the lower surface of the void 13 passes through the through hole near the lower surface of the void 13 due to its own weight and is discharged in a backflow direction toward the windward side of the ventilation block 12. This phenomenon occurs because the water mass that has dropped onto the lower surface of the void 13 is diffused by its own weight to a thickness of approximately 1 mm, and the force of dropping the water mass is greater than the force of pushing it up.

The raindrops that have permeated the ventilation block 12 and have entered the ventilation block 14 repeat the same phenomenon as the ventilation block 12, and most of the raindrops fall into the water mass on the lower surface of the void portion 15. , And is discharged in a form of passing back through the through hole near the lower surface of the void portion 15 and flowing backward to the windward side. Raindrops that have passed through the ventilation block 14 are
Since it almost never reaches the bottom of the void 15, the rain penetrates the attic 7 through the ventilation block 18 and is completely prevented.

Further, from the structural characteristics of the waterproof ventilation member 5 of the present invention, the roof ventilation structure 1 of the present invention can obtain the following effects on the waterproof surface. The waterproof ventilation member 5 of the present invention includes the ventilation blocks 12, 14, 16,
The through hole 18 is formed so as to become shorter from the upper plate 8 side toward the lower plate 9 side.

For the illustrated roof ventilation structure 1, the wind speed is 12
According to the actual measurement value when the wind of m / s is blown, the wind speed of the uppermost part (on the side of the roof 11) of the waterproof ventilation member 5 is 4.1 m, whereas the wind speed of the lowermost part (on the side of the roof material 10). Is 0.2m
And confirmed to be slow. The waterproof ventilation member 5 of the present invention
Since the through hole on the side of the upper plate 8 where the wind speed is fast is long, it is possible to trap a lot of raindrops.

On the other hand, on the lower plate 9 side where the wind speed is slow, even if the through hole is short, raindrops can be sufficiently trapped, and since the through hole is short, the water dropped on the lower surface of the voids 13, 15, 17 is Diffusion and discharge of lumps become easy. Therefore, compared with the case where the through holes have the same length from the upper plate 8 side to the lower plate 9 side,
It becomes possible to perform waterproofing with good ventilation efficiency. In fact, in the illustrated roof ventilation structure 1, no infiltration of rainwater into the ridge upper space 19 was observed up to a wind speed of 56 m.

Next, a ventilation mechanism of the roof ventilation structure 1 will be described. In the illustrated roof ventilation structure 1, the outside airflow A flows from the ventilation block 12 of the waterproof ventilation member 5 on the windward side as shown by the arrow, and the ventilation block 12,
It is rectified by 14, 16, 18 and reaches the ventilation block 18 'of the waterproof ventilation member 5'on the leeward side, and is discharged from the ventilation block 12' by the negative pressure on the leeward side.

Further, the air flow a that has passed through the waterproof ventilation member 5
Forms an air flow b to generate a negative pressure area on the lower surface side of the air flow a when passing through the upper space 19 of the ridge, and the atmosphere c of the attic 7
Flows out toward the air flow b.

If the backyard 7 has a structure in which it communicates with the gap between the outer wall and the inner wall of a building (not shown), the backyard 7 is cooled by exhausting the gap by the above-mentioned mechanism. Radiant heat from the back 7 to the room can be reduced. Therefore, since the cooler works well indoors in the summer, it is possible to save the electricity cost of the air conditioner and contribute to energy saving. In addition, it is possible to dehumidify the attic 7 and the gap between the outer wall and the inner wall.

Further, the waterproof ventilation member 5 of the present invention has a structural feature that the through hole of the ventilation block is formed in one direction parallel to the upper plate and the lower plate. Therefore, in the roof ventilation structure 1 of the present invention, the following effects can be obtained on the ventilation surface.

That is, unlike the conventional louver shown in FIG. 2, the through hole is formed in a straight line having no inflection point, and the airflow A can linearly enter the waterproof ventilation member 5, so that the flow velocity is greatly reduced. It does not become turbulent. Therefore, it is possible to ensure sufficient air permeability and ventilation capacity.

(Embodiments 2 and 3) The waterproof ventilation member of the present invention is not limited to the roof having two inclined surfaces such as the gable roof shown in Embodiment 1, but also a roof building, a direction roof and the like. It is also possible to place it on a roof with an inclined surface. As a second embodiment, an example of a roof ventilation structure in which the waterproof ventilation member of the present invention is arranged on a roof building and a direction roof is shown as a third embodiment. Even in these cases, the waterproof and ventilation mechanisms are the same as in the first embodiment.

Hereinafter, an example of the house building of the second embodiment will be described with reference to FIG. 7, and an example of the direction roof of the third embodiment will be described with reference to FIG. 8. In the case of a parlor building, the building base plate 5
The opening 56 is taken in 4 (FIG. 7A), and the draining sheet metal 60 having the rising portion 60a of about 20 mm is arranged and fixed so as to surround the opening 56 (FIG. 7B).

On the other hand, in the case of a one-way roof, since there is no ridge portion, an opening 76 is formed near the roof apex of the base plate 74 (FIG. 8A), and similarly, a draining sheet metal 80 is arranged and fixed. (FIG.8 (b)). It should be noted that the draining sheet metal 60, 80 does not necessarily have to be made of sheet metal in both the ridge and the direction roof, but may be made of colonial. In the case of the colonial structure, the rising portions 60a and 80a may not be provided and only the treatment with the caulking material may be performed.

The following steps can be performed in the same manner for the parquet building and the one-way roof, and four waterproof ventilation members 55, corresponding to the roof shape, so as to surround the draining sheet metal 60, 80.
The side surfaces of 75 are airtightly contacted to each other and fixed in a frame shape (FIGS. 7C and 8C). In this case, the base plate 5
If there is a gap between the waterproof ventilation members 55 and 75 and between the waterproof ventilation members 55 and 75, it may cause rain leakage, so that the members are hermetically sealed with caulking material, putty or the like.

Next, the tops 61 and 81 are placed on the upper surfaces of the waterproof ventilation members 55 and 75 (FIGS. 7D and 8D), and the tops 61 and 81 are attached to the waterproof ventilation members 55 and 75 and the draining sheet metal 60. 80 together with the field boards 54 and 74 are fixed to the field wood not shown by screwing them with nails. Finally, the head boards 61, 81 are covered and fixed with the metal plates 66, 86 to caulk the gap (FIG. 7 (e), FIG. 8).
(E)).

It should be noted that, unlike a gable roof in which the length of the roof surface in the longitudinal direction is substantially the same at the ridge portion and the lower end portion of the roof, the roof surface has a shape that converges toward the ridge or roof apex. In the ridge and the one-way roof, the opening width of the waterproof ventilation member on the outside air side is likely to be narrowed, so that it may be difficult to ensure ventilation. Therefore, it is preferable to secure ventilation in the gathering building and the one-way roof by the following method.

First, there is a method of ensuring an opening area by making the waterproof ventilation member thick. For example, a waterproof ventilation member for a gable roof is generally configured to have a thickness of about 50 mm, but a waterproof ventilation member for a gathering ridge or a sideways roof has a narrow opening width by increasing the thickness to about 75 mm. It is possible to supplement the amount with the thickness.

The second method is to secure the opening area by setting the mounting position of the waterproof ventilation member to the lower side of the roof slope. This is because the width of the shed ridge or the direction roof becomes wider toward the lower side of the roof surface, so that the opening width itself can be widened.

The second method is particularly effective in the case of a direction roof that does not have a ridge portion and the inclined surface converges on one point of the roof apex. This is because if the waterproof ventilation member is arranged near the roof apex, the opening area of the one-way roof is extremely reduced, and it is difficult to ensure the ventilation even when compared with the crowded building.

FIG. 9 is an enlarged view of the vicinity of the roof apex of the direction roof. Unlike the gable roof of FIG. 1, a waterproof ventilation member 7
The mounting position of 5 is below the roof slope, and a distance is provided between the rising portion 80a of the draining sheet metal and the waterproof ventilation member 75. By doing so, the outer peripheral dimensions of the four waterproof ventilation members 75 can be increased and the opening width can be increased.

In this case, it is preferable that the perimeter dimension of the headstock 81 has one side L1 of 1.5 m or more, and a large distance L2 from the rising portion 80a to the edge of the waterproof ventilation member 75. . Further, in order to increase the amount of ventilation with the back side of the hut, it is preferable that one side L3 of the opening 76 at the roof apex provided on the base plate 74 is also 45.5 cm or more.

On the other hand, in the gable roof shown in FIG. 1, since the waterproof ventilation member 5 can be arranged in the roof ridge direction (that is, the longitudinal direction) and a sufficient opening area can be taken, two sheets of gable roof are provided. You may arrange | position just above a ridge so that the waterproof ventilation members 5 and 5'may contact. L2 is 1 cm for a gable roof
It is sufficient if the width L3 of the ventilation hole 6 is about 20 to 40 mm.

[0065]

As described above, according to the present invention, it is possible to surely prevent rainwater from entering and to ensure ventilation inside and outside the building without relying on forced exhaust. Provided are a waterproof ventilation member for a building capable of dehumidifying and cooling, and a roof ventilation structure of a building using the waterproof ventilation member.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a roof ventilation structure of the present invention.

FIG. 2 is schematic perspective views (a) and (b) showing an example of a conventional waterproof ventilation member.

FIG. 3 is schematic sectional views (a), (b) and (c) showing an embodiment of the waterproof ventilation member of the present invention.

FIG. 4 is schematic sectional views (a) and (b) showing another embodiment of the waterproof ventilation member of the present invention.

5A and 5B are schematic cross-sectional views showing still another embodiment of the waterproof ventilation member of the present invention, wherein FIG. 5A is a side cross-sectional view and FIG.

FIG. 6 is a process drawing (a), (b), (c) showing an example of a method for manufacturing a waterproof ventilation member of the present invention.

FIG. 7 is a process drawing (a), (b), (c), (d), (e) showing one construction example of the roof ventilation structure of the present invention.

FIG. 8 is a process drawing (a), (b), (c), (d), (e) showing another construction example of the roof ventilation structure of the present invention.

FIG. 9 is a schematic cross-sectional view showing another embodiment of the roof ventilation structure of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Roof ventilation structure, 2 ... Purlin, 3 ... Field timber, 4 ... Board, 5 ... Waterproof ventilation member, 6 ... Ventilation hole, 7 ... Attic, 8
... Upper plate, 9 ... Lower plate, 10 ... Roofing material, 11 ... Kasaki, 12,
14, 16, 18 ... Ventilation block, 13, 15, 17 ...
Voids, 19 ... Upper space of the ridge, 20 ... Raindrops, 21 ... Rattle, 22 ... Top surface, 23 ... Bottom surface, 24 ... Cylindrical body, 25 ...
Through hole, 26 ... Snowflakes, 31 ... Waterproof ventilation member, 32 ... Upper plate, 33 ... Lower plate, 34 ... Ventilation block, 35 ... Through hole,
36 ... Void part, 41 ... Through hole, 42 ... Plastic corrugated board (for ventilation block), 43 ... Laminated board, 44 ... Ventilation block, 45, 46 ... Plastic corrugated board (for upper plate and lower plate), 47 ... Top surface, 48 ... Bottom surface, 49 ... Cylinder body, 51
… Roof ventilation structure, 54… Base plate, 55… Waterproof ventilation member,
56 ... Opening part, 60 ... Draining sheet metal, 61 ... Kasaki, 66 ...
Sheet metal, 71 ... Roof ventilation structure, 72 ... Purlin, 73 ... Field tar tree, 74 ... Field board, 75 ... Waterproof ventilation member, 76 ... Opening part, 80 ... Drain sheet metal, 81 ... Head tree, 86 ... Sheet metal.

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-2-272153 (JP, A) JP-A-5-171759 (JP, A) JP-A-8-105172 (JP, A) JP-A-59- 165754 (JP, A) JP-A-9-177254 (JP, A) JP-A-59-76369 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04D 13/16 E04B 1 / 70 E04B 7/18 E04D 3/40

Claims (7)

(57) [Claims] 1. An upper plate and a lower plate which are parallel to each other, and a ventilation block which is sandwiched between the upper plate and the lower plate and in which a plurality of through holes are formed in one direction parallel to the upper plate and the lower plate. And a plurality of ventilation blocks arranged discontinuously through at least two voids with respect to the direction of the through-hole, and waterproof for a building for preventing ventilation of rainwater and ensuring ventilation. A ventilation member for a building, wherein each of the ventilation blocks is formed so that a through hole becomes shorter from an upper plate side toward a lower plate side. 2. The waterproof ventilation member according to claim 1, wherein a plurality of ventilation blocks are discontinuously arranged through at least three voids in the through hole direction. 3. The side shape of the void portion is a trapezoidal shape in which the upper plate is the upper bottom and the lower plate is the lower base, and the both bottom angles are 90 ° or less. Further, the side shape of each ventilation block is the lower plate side. The waterproof ventilation member according to claim 1 or 2, which has a trapezoidal shape with both bottom angles of 90 ° or less with the bottom side and the lower plate side as upper bases. 4. The upper plate and the lower plate are constituted by plate-like bodies in which staggered columnar bodies are arranged between the top surface and the bottom surface.
The waterproof ventilation member according to any one of 3 above. 5. A plate shape in which a plurality of ventilation blocks constituting the waterproof ventilation member, which are located other than both ends of the waterproof ventilation member, are provided with staggered columnar bodies between the top surface and the bottom surface. The waterproof ventilation member for a building according to any one of claims 1 to 4, wherein the body is laminated. 6. A roof ventilation structure for a building in which two waterproof ventilation members according to any one of claims 1 to 5 are set as one set and are arranged on each inclined surface of a roof having two inclined surfaces. Aligning the direction of the through holes of each waterproof ventilation member with the inclination direction of the roof, and making the two waterproof ventilation members into an inverted V shape or a C shape centered on the ridge, on each inclined surface near the ridge. The roof ventilation structure of the building characterized by the arrangement. 7. A roof ventilation structure for a building, wherein a set of four waterproof ventilation members according to any one of claims 1 to 5 is arranged on each inclined surface of a roof having four inclined surfaces. , Each of the waterproof ventilation members has a frame shape in which the direction of the through-holes matches the inclination direction of the roof, and the side surfaces of the four waterproof ventilation members are in airtight contact with each other on each inclined surface near the ridge or roof apex. The roof ventilation structure of the building characterized by the arrangement.