JP2000034812A - Waterproof venting member for building and roof ventilation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof venting member and a roof ventilation structure for a building wherein penetration of rainwater can be surely prevented and ventilation can be maintained inside and outside a building without using a forced ventilation, and moreover dehumidification and cooling of an attic space can be achieved. SOLUTION: There are provided a top board 8 and a bottom board 9 which are parallel with each other and venting blocks 12, 14, 16, 18, in each of which a large number of through holes are formed in a direction in parallel with the boards 8, 9. And the blocks 12, 14, 16, 18 are spaced alternately with at least two vacant spaces 13, 15, 17 in the direction of the through holes to form waterproof venting members for a building, wherein each of the blocks 12, 14, 16, 18 are formed in such a manner that the length of the through holes are made smaller from the top board 8 toward the bottom board 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof ventilating member for a building for securing ventilation and preventing dehumidification and cooling of the back of a hut while preventing intrusion of rainwater, and a building using the waterproof ventilating member. Related to the roof ventilation structure.

[0002]

2. Description of the Related Art In recent years, in many buildings, a gap between an outer wall and an inner wall, particularly a roof, has been used in order to save electricity bills of an air conditioner by air cooling effect and to contribute to energy saving or to dehumidify the back of a hut. Attempts have been made to distribute a large amount of airflow through the ventilation layer. In order to increase the amount of air flow in the attic ventilation layer, it is conceivable to increase the area of the opening where outside air enters, but simply increasing the area of the opening will inevitably prevent rainwater intrusion and cause leakage. Obviously,

[0003] The present inventors have already proposed a waterproof ventilating member for ensuring ventilation of a hut or an attic ventilation layer while preventing intrusion of rainwater or the like, as shown in FIG. 21 with a cylindrical body 24 arranged in a staggered manner between
At the same time, a building ventilation structure in which the gallery is installed near the building on the roof of the building is also proposed (Patent No. 2).
677319).

[0004] Even in a situation where rainwater blows in due to a storm or the like, the cylindrical body 24 arranged in a zigzag pattern as shown by the arrow X hinders the linear intrusion of the rainwater. It is configured such that rainwater can be prevented from penetrating into the building by passing through the building. In fact,
While the maximum wind speed during a storm is about 30 to 40 m / s, the actual measured value of the critical wind speed that can prevent the leakage of the garbage is about 85 m / s, so there is no rainwater intrusion under natural conditions. .

[0005] The louver 21 is also effective against snowflake intrusion. As shown in FIG.
Since the airflow W into which the snowflakes are blown flows around backward along the cylindrical body 24, the snowflakes 26 are caught in the airflow W ′ and are deposited behind the cylindrical body 24. Even when the snowflakes pass through the first row of cylindrical bodies 24a, the same phenomenon occurs in the second row of cylindrical bodies 24b and the third row of cylindrical bodies 24c, so that snowflakes are prevented from entering the building.

[0006]

However, as a result of further studies by the present inventors, it has been found that there is still room for improvement in the above-mentioned rattle. In other words, in the above-mentioned gullari, the cylinders are arranged in a staggered manner, and the outside air cannot flow in a straight line. Therefore, the wind speed of the airflow flowing from the outside, which has the greatest influence on the ventilation capacity of the building, decreases, and it is still difficult to say that the ventilation and the ventilation capacity are sufficient.

The waterproof ventilation member having such a structure cannot provide sufficient ventilation when ventilation depends on a temperature difference pressure.
If forced exhaust is performed by a fan, sufficient ventilation can be ensured, but operating costs will be incurred. The present invention has been made in view of such problems of the prior art,
Its purpose is to prevent rainwater intrusion reliably, to secure ventilation inside and outside the building without forced exhaust, and to dehumidify and cool the back of the hut. It is an object of the present invention to provide a waterproof ventilation member for a building and a roof ventilation structure of the building using the waterproof ventilation member.

[0008]

That is, according to the present invention, an upper plate and a lower plate which are parallel to each other, and which are sandwiched between the upper plate and the lower plate and which are parallel to the upper plate and the lower plate. A ventilation block in which a large number of through holes are formed in the direction, wherein a plurality of ventilation blocks are arranged discontinuously via at least two voids in the direction of the through hole, to prevent rainwater from entering. A waterproof ventilation member for a building for ensuring ventilation, wherein each of the ventilation blocks is formed such that a through hole becomes shorter from an upper plate side toward a lower plate side. A waterproof ventilation member is provided.

In the waterproof ventilation member of the present invention, it is preferable that a plurality of ventilation blocks are disposed discontinuously via at least three voids in the direction of the through-hole. Is a trapezoidal shape with a bottom angle of 90 ° or less with the lower plate as the lower base, and the side shape of each ventilation block is a double bottom angle 90 with the upper plate side as the lower bottom and the lower plate side as the upper bottom.
° or less is preferable.

In the waterproof ventilation member according to the present invention, it is preferable that the upper plate and the lower plate are each formed of a plate-like member having a staggered columnar body disposed between a top surface and a bottom surface. Of the plurality of ventilation blocks constituting the member, those located at positions other than both ends of the waterproof ventilation member are formed by laminating a plate-like body having a staggered columnar body disposed between a top surface and a bottom surface. Is preferred.

Further, according to the present invention, there is provided a roof ventilation structure for a building in which the two waterproof ventilation members are arranged as a set of two on each inclined surface of a roof having two inclined surfaces. Characterized in that the direction of the through-hole coincides with the inclination direction of the roof, and the two waterproof ventilation members are arranged on each inclined surface near the ridge as an inverted V-shape or a V-shape around the ridge. The roof ventilation structure of the building is provided.

Further, according to the present invention, there is provided a roof ventilation structure for a building in which the above-mentioned four waterproof ventilation members are provided as a set of four and disposed on each inclined surface of a roof having four inclined surfaces. The direction of the through-holes coincides with the direction of inclination of the roof, and the four waterproof ventilation members are arranged on each sloping surface in the vicinity of the ridge or the roof apex as a frame shape in which the side surfaces of the four waterproof ventilation members abut airtightly. The roof ventilation structure of the building is provided.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A waterproof ventilation member according to the present invention includes a plurality of ventilation blocks having a large number of through holes formed discontinuously through at least two voids in the direction of the through holes. In addition, each ventilation block is formed so that a through hole becomes shorter from the upper plate side to the lower plate side. ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to improve ventilation and ventilation capacity, preventing rainwater etc. from invading.

Hereinafter, an outline of an example of the waterproof ventilation member of the present invention will be described, and its effect will be described with an example of a roof ventilation structure in which the waterproof ventilation member is disposed on a 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 comprises 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 the plate-like body can sandwich the ventilation block 34, but a plate having a staggered columnar body disposed between the top surface and the bottom surface. It is preferable to configure the shape. For example, if the same structure as the conventional gallery 19 shown in FIG. 2 is used as a plate-like body having a thickness of 3 to 5 mm for the upper plate and the lower plate, ventilation can be ensured even in the upper plate 32 and the lower plate 33, and This is because it is possible to prevent the intrusion of the information.

It should be noted that it is not preferable to form a straight through hole in the upper plate 32 and the lower plate 33 in the same direction as the ventilation block 34, even if it is necessary to secure ventilation. This is because the upper plate 32 and the lower plate 33 cannot be provided with a gap in the middle, so that 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. I have. The hole shape of the through hole 35 is not particularly limited, and for example, a circle, a triangle, a square, a hexagon, or the like can be used.

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

In the waterproof ventilation member of the present invention, it is necessary that each ventilation block is formed such 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 arranged discontinuously via three gaps 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 surface shape of the ventilation block 34 is not particularly limited as long as the above condition is satisfied, but as shown in FIG. 3A, the bottom side is the upper plate 32 side and the bottom side is the lower plate 33 side. Preferably, the trapezoid has an angle of 90 ° or less. This is because it can be easily sandwiched between the upper plate 32 and the lower plate 33 and the strength can be secured. As shown in FIG. 3 (c), a triangle having the upper plate 32 as the base and both base angles of 90 ° or less may be used, but a process such as welding or welding is required on the lower plate 33 side.

Similarly, the shape of the side surface of the gap 36 is not particularly limited. For example, as shown in FIG. 3B, a triangular shape having the lower plate 33 as a base and a double base angle of 90 ° or less may be used. 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 has a trapezoidal shape with a bottom angle of 90 ° or less. By increasing the trapezoidal shape, that is, by increasing the area of the lower surface of the gap 36, the water mass dropped on the surface is sufficiently diffused to form a thin water layer. Therefore, the water mass can be easily discharged.

In this specification, the ventilation block 3
4. When the “side shape” of the gap 36 is referred to, the upper plate 32
And a shape 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 gaps 36, and the waterproof effect can be further enhanced by increasing the number of gaps 36. However, if the number of the voids 36 is excessively increased, the structure becomes complicated and the production becomes difficult. Therefore, from the balance between the waterproof effect and the ease of production,
As shown in FIG. 3, it is preferable that the number of the voids 36 is three.

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

The shape of the waterproof ventilation member according to the present invention is not limited to the shapes shown in FIGS. 3A to 3C. Depending on the purpose, the shape of the ventilation block, the void portion, or the entire waterproof ventilation member is determined. The shape can be changed as appropriate. For example,
As shown in FIG. 4A, all the ventilation blocks 34 may have the same shape. Also, 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.

When it is desired to enhance the snow-proofing property of the waterproof ventilation member, as shown in FIG. 5, among the plurality of ventilation blocks 34 constituting the waterproof ventilation member 31, they are located other than both ends of the waterproof ventilation member 31. It is preferable that the thing 34a be a ventilation block formed by stacking plate-like bodies in which cylindrical bodies are arranged in a staggered manner between the top surface and the bottom surface. For example, a ventilation block may be formed by laminating a plate-like body having a thickness of 3 to 5 mm from the same structure as the conventional gallery 21 shown in FIG. This is because, as described above, the conventional structure of the rattle 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 capacity cannot be obtained. It is necessary to secure the effect of rectifying the air flow as the ventilation block having the straight through hole 35 with respect to the ventilation block 34b.

The upper plate 32, the lower plate 33, and the ventilation block 3
The material 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 fire resistance, and plastic can be used to reduce manufacturing costs.

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, each waterproof ventilation member can be attached in an inverted V-shape along the inclined surface of the roof by bending from the central portion of the upper plate. In this case, it is preferable to provide a folding margin of about 10 cm at the center 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 ensured even in the upper plate portion.

FIG. 6 shows an example of a method for manufacturing the above-described waterproof ventilation member. First, a through hole 41 having a thickness of about 3 to 5 mm.
Plastic cardboard 42 with a square hole shape
After laminating about 10 sheets, a laminated plate 43 is formed by fixing by means of heat fusion, adhesive or the like, and the laminated plate 43 is cut obliquely to produce a ventilation block 44 having a trapezoidal side shape. I do.

The ventilation block 44 is sandwiched between plastic cardboards 45 and 46 serving as upper and lower plates so as to be arranged in a desired gap shape after being arranged in parallel, and then heat-sealed, an adhesive, a double-sided tape, a stapler, or the like. To form a waterproof ventilation member. In the illustrated example, the plastic corrugated cardboard 45, 46 is a plate-like body having a staggered cylindrical body 49 disposed between a top surface 47 and a bottom surface 48. Placing the plastic cardboard 42 so that the direction of the through-holes is orthogonal to the upper plate,
The lower plate may be used.

The waterproof ventilation member according to the present invention can be provided as a roof ventilation structure for a building by arranging a pair of 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 formed into an inverted V-shape or a C-shape around the ridge, and the vicinity of the ridge is formed. Place on each slope.

Here, the “inverted V-shape centered on the ridge” refers to a structure in which the edges of two waterproof ventilation members abut at the ridge portion, or two waterproof ventilation members share an upper plate. The term "C-shaped" means a structure in which the edges of the two waterproof ventilation members are not in contact with each other and are individually arranged on each inclined surface.

In addition, a set of four waterproof ventilation members of the present invention is arranged on each inclined surface of a roof having four inclined surfaces, such as a ridge and a directional roof, so that a roof ventilation structure of a building can be obtained. 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 four waterproof ventilation members are formed into a frame shape in which the side surfaces are in airtight contact with each other,
It will be placed on each slope near the top of the building or roof.

Here, the “frame shape in which the side surfaces of the waterproof ventilation members abut each other” means a structure in which the side surfaces of the four waterproof ventilation members abut each other and form a frame shape when viewed from the roof top 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 shape is converged upward. Further, in order to prevent rain leakage, it is necessary that the four waterproof ventilation members have their side surfaces hermetically contacted.

[0037]

Hereinafter, the present invention will be described in more detail with reference to an embodiment in which the waterproof ventilation member of the present invention is attached to a roof portion of a building to form a roof ventilation structure. 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 disposed on a gable roof having two inclined surfaces, and the effects of waterproofing and ventilation will be described. . In the first embodiment, a waterproof ventilation member having a ventilation block having a through-hole diameter of 3 mm is used.

FIG. 1 is a side sectional view of a roof ventilation structure 1 in which waterproof ventilation members 5 and 5 ′ are arranged near a ridge of a building provided with a purlin 2, a ground timber 3, and a ground board 4. Actually, the side surfaces of the waterproof ventilation members 5, 5 'are sealed with a plate-like body (not shown) or the like. In the example of FIG.
5 ′ is a pair, and the waterproof ventilation members 5 and 5 ′ are arranged in an inverted V-shape around the ridge so that the direction of the through-holes coincides with the inclination direction of the roof. Is about 20-4
It communicates with the back of the hut 7 through a vent hole 6 having a width of 0 mm.

In the roof ventilation structure 1, one edge portion 8 a, 8 of each of the upper plates 8 of the two waterproof ventilation members 5, 5 ′
Only a ′ is fixed with tape (not shown) so as to abut against each other in the ridge portion, and the lower plate 9 is a roofing material 1 constituting a roof surface.
It is arranged to be in contact with 0. Each member is Kasagi 11
Together with the waterproof ventilation member 5, the roofing material 10, and the field board 4 are fixed to the field ground timber 3 by nailing.

The roof ventilation structure 1 exhibits a waterproof function by the following mechanism. The rain spray 20 during windbreak is
It collides with the windward end surface 12a of the ventilation block 12, and about 50% of the collision enters the through hole. Rain droplets that have entered the through-hole collide with the inner wall of the through-hole and are trapped.
Some through-holes of about 3 mm are formed, and the through holes are closed.

The water block that has closed 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 of being pushed out from the leeward side end surface 12b. A part of the water that has flowed out (3 to 10% of the 50% that has entered the through-hole) again becomes a droplet and enters the through-hole of the ventilation block 14.

On the other hand, the water mass that has dropped onto the lower surface of the gap 13 passes through the through hole near the lower surface of the gap 13 by its own weight, and is discharged in a form that flows backward toward the windward side of the ventilation block 12. This phenomenon occurs because the water mass falling on the lower surface of the gap portion 13 is diffused by its own weight to a thickness of about 1 mm, so that the force of dropping the water mass is greater than the force of pushing up the water mass.

The raindrops that have passed through the ventilation block 12 and entered the ventilation block 14 repeat the same phenomenon as the ventilation block 12, and most of the raindrops fall into a water mass and fall on the lower surface of the cavity 15. The air passes through the through hole near the lower surface of the gap 15 and is discharged in the form of flowing backward to the windward side. Rain droplets that have passed through the ventilation block 14
, And falls to the lower surface of the gap portion 15 with almost no arrival, so that a situation in which rain penetrates through the ventilation block 18 and enters the back of the hut 7 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 provide the following effects on the waterproof surface. The waterproof ventilation member 5 of the present invention includes ventilation blocks 12, 14, 16,
Reference numeral 18 is formed so that the through hole becomes shorter from the upper plate 8 side toward the lower plate 9 side.

With respect to the illustrated roof ventilation structure 1, the wind speed 12
According to the actually measured value when a wind of m / s is blown, the wind speed at the uppermost part (on the side of the roof 11) of the waterproof ventilation member 5 is 4.1m, whereas the wind speed at the lowermost part (on the side of the roofing material 10) is obtained. Is 0.2m
And has been confirmed to be slow. The waterproof ventilation member 5 of the present invention
Since the through-hole on the upper plate 8 side where the wind speed is fast is long, a lot of rain drops can be trapped.

On the other hand, on the lower plate 9 side where the wind speed is slow, even if the through-hole is short, it is possible to sufficiently trap rain drops, and since the through-hole is short, the water that has fallen on the lower surface of the voids 13, 15, 17. The lump is easily diffused and discharged. Therefore, compared with the case where the through hole has the same length from the upper plate 8 side to the lower plate 9 side,
Waterproofing with good ventilation efficiency can be performed. In fact, in the illustrated roof ventilation structure 1, no intrusion of rainwater into the ridge upper space 19 was observed up to the wind speed of 56 m.

Next, the ventilation mechanism of the roof ventilation structure 1 will be described. In the illustrated roof ventilation structure 1, the outside air flow A flows in 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,
The flow is rectified at 14, 16, and 18 to reach 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.

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 ridge upper space 19, and the atmosphere c
Flows out toward the airflow b.

If the back of the hut 7 is structured to communicate with the gap between the outer wall and the inner wall of the building (not shown), the hut back 7 is cooled by exhausting the gap by the above-described mechanism. Radiant heat from the back 7 to the room can be reduced. Therefore, the cooler works effectively in the room in the summer, so that the electricity bill for the air conditioner can be saved and energy can be saved. Further, it is also possible to dehumidify the back of the hut 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 rattle shown in FIG. 2, the through hole is formed in a straight line having no inflection point, and the air flow A can linearly enter the waterproof ventilation member 5, so that the flow velocity is greatly reduced. And no turbulence. Therefore, it is possible to ensure sufficient ventilation and ventilation capacity.

(Embodiments 2 and 3) The waterproof ventilation member of the present invention can be used not only for roofs having two inclined surfaces such as the gable roof shown in Embodiment 1 but also for rooftops and pedestrian roofs. It is also possible to arrange on a roof with a slope. Example 2 shows an example of a roof ventilation structure in which the waterproof ventilation member of the present invention is disposed on a side roof, as a third example, and as a third example. In these cases, the waterproof and ventilation mechanisms are the same as in the first embodiment.

Hereinafter, an example of the approach building according to the second embodiment will be described with reference to FIG. 7, and an example of the traveling roof according to the third embodiment will be described with reference to FIG. In the case of a ridge, the base plate 5 of the ridge part
An opening 56 is formed in FIG. 4 (FIG. 7A), and a draining sheet metal 60 having a 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 the one-way roof, since there is no ridge portion, an opening 76 is taken near the roof apex of the base plate 74 (FIG. 8A), and the drainage sheet metal 80 is similarly arranged and fixed. (FIG. 8 (b)). In addition, the draining sheet metal 60, 80 is not necessarily required to be constituted by sheet metal, but may be constituted by colonial. In the case of a configuration using a colony, only the treatment with a caulking material may be performed without providing the rising portions 60a and 80a.

The following steps can be performed in the same way for the approaching ridge and the approaching roof, and the four waterproof ventilation members 55,
75 are fixed in a frame shape by airtightly abutting the side surfaces 75 (FIGS. 7C and 8C). In this case, the field board 5
If there is a gap between the waterproof ventilation members 55 and 75 and between the waterproof ventilation members 55 and 75 and between the waterproof ventilation members 55 and 75, it will cause a leak of rain. Therefore, it is airtightly sealed with a caulking material, putty or the like.

Next, the caps 61, 81 are placed on the upper surfaces of the waterproof ventilation members 55, 75 (FIGS. 7D and 8D), and the caps 61, 81 are attached to the waterproof ventilation members 55, 75, the draining sheet metal 60, 80, together with the base plates 54 and 74, are fixed to a base wood (not shown) by nailing with a screw nail. Finally, the caps 61, 81 are covered and fixed by the sheet metals 66, 86, and the gap is caulked (FIGS. 7E and 8).
(E)).

Unlike a gabled roof in which the longitudinal dimension of the roof surface is substantially the same length at the ridge portion and the roof lower end portion, the roof surface has a shape converging toward the ridge or the roof top. In a ridge or a directional roof, the outside air-side opening width of the waterproof ventilation member is likely to be narrow, so that it may be difficult to secure ventilation. Therefore, it is preferable to secure ventilation in the approach ridge or the approaching roof by the following method.

First, there is a method of securing the opening area by increasing the thickness of the waterproof ventilation member. 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 ridge and a pedestrian roof is made as thick as about 75 mm, so that an opening width is narrow. It is possible to make up for this by thickness.

Secondly, there is a method of securing the opening area by setting the mounting position of the waterproof ventilation member below the roof inclined surface. This is because the width of the approach ridge and directional 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 directional roof having no ridge portion and an inclined surface converging at one point of the roof vertex. This is because, when the waterproof ventilation member is arranged near the top of the roof, the opening area of the direction roof is extremely reduced, and it is difficult to secure the ventilation compared to the approaching building.

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

In this case, it is preferable that the outer dimension of the cap 81 is 1.5 m or more on one side L 1, and the distance L 2 from the rising portion 80 a to the edge of the waterproof ventilation member 75 is preferably large. . In addition, in order to increase the ventilation amount with the back side of the hut, it is preferable that the side 76 of the opening 76 at the top of the roof provided in the base plate 74 is 45.5 cm or more.

On the other hand, in the gabled roof shown in FIG. 1, the waterproof ventilation member 5 can be arranged in the ridge direction of the roof (that is, in the longitudinal direction) and a sufficient opening area can be taken. The waterproof ventilation members 5 and 5 ′ may be arranged directly above the ridge so as to abut. L2 is 1cm for gable roof
It is sufficient that the width L3 of the vent hole 6 is about 20 to 40 mm.

[0065]

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

[Brief description of the drawings]

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

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

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

FIGS. 4A and 4B are schematic cross-sectional views showing another embodiment of the waterproof ventilation member of the present invention.

FIG. 5 is a schematic sectional view showing still another embodiment of the waterproof ventilation member of the present invention, wherein (a) is a side sectional view and (b) is an AA ′ sectional view.

6 (a), 6 (b), and 6 (c) show an example of a method for producing a waterproof ventilation member according to the present invention.

FIGS. 7 (a), 7 (b), 7 (c), 7 (d), and 7 (e) show an example of construction of the roof ventilation structure of the present invention.

8 (a), (b), (c), (d), and (e) show another example of construction of the roof ventilation structure of the present invention.

FIG. 9 is a schematic 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 wood, 4 ... Field board, 5 ... Waterproof ventilation member, 6 ... Ventilation hole, 7 ... Back hut, 8
... top plate, 9 ... bottom plate, 10 ... roofing material, 11 ... kasagi, 12,
14, 16, 18 ... ventilation block, 13, 15, 17 ...
Void, 19: Upper building space, 20: Spray of rain, 21: Gutter, 22: Top surface, 23: Bottom surface, 24: Column, 25 ...
Through hole, 26: snowflake, 31: waterproof ventilation member, 32: upper plate, 33: lower plate, 34: ventilation block, 35: through hole,
36 ... void portion, 41 ... through hole, 42 ... plastic cardboard (for ventilation block), 43 ... laminated board, 44 ... ventilation block, 45, 46 ... plastic cardboard (for upper plate and lower plate), 47 ... top surface, 48 ... bottom surface, 49 ... cylindrical body, 51
... roof ventilation structure, 54 ... field board, 55 ... waterproof ventilation member,
56 ... opening, 60 ... draining sheet metal, 61 ... Kasagi, 66 ...
Sheet metal, 71: roof ventilation structure, 72: purlin, 73: field ground tall, 74: field board, 75: waterproof ventilation member, 76: opening, 80: draining sheet metal, 81: kasagi, 86: sheet metal.

Claims (7)

[Claims] 1. A ventilation block sandwiched between an upper plate and a lower plate parallel to each other, and having a plurality of through holes formed in one direction parallel to the upper plate and the lower plate. Waterproofing for buildings to secure ventilation while preventing intrusion of rainwater, wherein a plurality of ventilation blocks are discontinuously arranged via at least two voids in the direction of the through hole. A water-permeable ventilation member for a building, wherein each of the ventilation blocks is formed such that a through hole becomes shorter from an upper plate side to a lower plate side. 2. The waterproof ventilation member according to claim 1, wherein a plurality of ventilation blocks are arranged discontinuously via at least three voids in the direction of the through hole. 3. The side surface shape of the air gap portion is a trapezoidal shape having an upper plate as an upper base and a lower plate as a lower base and having a bottom angle of 90 ° or less. The waterproof ventilation member according to claim 1 or 2, wherein the trapezoidal shape has a base angle of 90 ° or less, with the bottom and lower plate sides being the upper base. 4. The plate according to claim 1, wherein the upper plate and the lower plate are plate-like members having a staggered columnar arrangement between a top surface and a bottom surface.
3. The waterproof ventilation member according to claim 1. 5. A plurality of ventilation blocks constituting the waterproof ventilation member, which are located at positions other than both ends of the waterproof ventilation member, are formed in a plate shape having a staggered columnar arrangement between a top surface and a bottom surface. The waterproof ventilation member for buildings according to any one of claims 1 to 4, wherein the waterproof ventilation member for a building is formed by laminating bodies. 6. A roof ventilation structure for a building, wherein the waterproof ventilation members according to any one of claims 1 to 5 are arranged as a set of two on each inclined surface of a roof having two inclined surfaces. 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 formed as inverted V-shapes or C-shapes around the ridge, on each inclined surface near the ridge. The roof ventilation structure of the building characterized by being arranged. 7. A roof ventilation structure for a building, wherein four waterproof ventilation members according to any one of claims 1 to 5 are arranged as a set on each inclined surface of a roof having four inclined surfaces. The direction of the through hole of each waterproof ventilation member is matched with the inclination direction of the roof, and the side surfaces of the four waterproof ventilation members are formed in a frame shape in which the side surfaces are in airtight contact with each other. The roof ventilation structure of the building characterized by being arranged.