JP2008150904A - Attic-space ventilation structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attic-space ventilation structure of a building, which can necessarily and sufficiently secure fireproofness and waterproofness, which can secure the amount of ventilation while having a compact size, and which does not generate noises, in terms of the design of the roof of the building, so that the attic-space ventilation structure can be installed even in a roof section with no protrusion of eaves (an undersurface-of-eaves ceiling), while avoiding a roof surface and the undersurface-of-eaves ceiling as weak points in fire prevention. <P>SOLUTION: This attic-space ventilation structure of the building with a sloped roof is provided with a ventilation passage (7) with waterproofness for the draining of the edge of the eaves, which is installed in such a manner as to continue into a sloped-roof member (15) astride a leading end (N) of the edge of the eaves from an edge-of-eaves vertical member (17). The ventilation passage comprises a first vent hole (8a) which is opened downward on the side of the outside edge-of-eaves vertical member, and a second vent hole (8b) which is provided on the side of the sloped roof member inside the sloped roof and opened on the side of an attic space. A filter member (12) is installed between the first and second vent holes of the ventilation passage. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an attic ventilation structure of a building.

In general, a hut ventilation structure (also referred to as an “attic ventilation structure”) of a building has problems of fire resistance, waterproofness (infiltration of rainwater), and securing airflow.
Conventionally, vents are often installed on the roof eaves of the roof because of the ventilation structure of the shed of a building. This is because the vents can be continuously provided and the opening area is increased, so that the amount of ventilation can be secured.
And since the eaves ceiling is a part that directly receives the spread of fire due to a neighbor's fire in the first place, and is a part that becomes a weak point in fire prevention, a technology that provides a fire shielding means at the vent of the eaves ceiling is disclosed. (Patent Document 1).

  However, recently, there is a case where a sloped roof is formed on a part of a land roof, and a vent for an eaves-ceiling cannot be provided in a portion of the roof where there is no eaves-ceiling. Also, since the eaves ceiling is a weak point in fire protection in the first place and is a part that directly receives the spread of fire due to a neighboring house fire, it is desirable not to provide a vent if possible.

  On the other hand, there exists a roof surface ventilation unit like patent document 2, patent document 3, or patent document 4 conventionally. According to this, even if there is no eaves ceiling, a vent can be provided in the roof of the roof.

  However, it is not preferable to install a large number of roof surface ventilation units penetrating the roof surface which is a waterproof layer, because many waterproof disadvantageous parts are formed. For this reason, the number of roof surface ventilation units to be installed is limited, and it is difficult to secure an opening area for ventilation.

  Moreover, since it is necessary to form the ventilation path which prevents rain water permeation inside a roof surface ventilation unit, the cross-sectional shape of a roof surface ventilation unit will become large, and it will protrude from a roof surface. For this reason, it is unpreferable also on the design of the roof part of a building.

  On the other hand, Patent Document 5 describes an eaves-end ventilation fire prevention structure. However, it is intended to ventilate between the roof tiles and the field board, and cannot be applied to the structure where ventilation of the roof of a sloped roof is performed at the tip of the eaves.

JP 2003-82883 A JP 59-196625 A JP 2000-257228 A JP 2001-173181 A JP-A-9-177198

An object of the present invention is to solve at least one of the problems associated with the prior art described above.
Therefore, it is an object of one embodiment of the present invention to provide a cabin ventilation structure that can sufficiently secure a ventilation amount with fire prevention.
In another aspect, an object of the present invention is to provide an attic ventilation structure that is shielded from the outside and excellent in waterproofness.
In yet another aspect, an object of the present invention is to provide an attic ventilation structure that is compact and excellent in design.

  In a more detailed aspect, the present invention avoids the back of the eaves, which is a weak point in fire prevention, and is also installed on a roof part where there is no ceiling on the back of the eaves. The purpose of the present invention is to provide a ventilation structure for the attic of a building that can secure air flow and does not cause noise in the design of the roof of the building.

  A first invention is a shed ventilation structure of a building with a gradient roof, and the shed ventilation structure is a gradient roof member that forms a gradient roof from an eaves vertical member that constitutes a vertical portion of the eaves of the building. Is installed across the front edge of the eaves where these members intersect, and has a waterproof air passage for draining the eaves, and the air passage is directed downward on the outer eaves vertical member side. And a second ventilation port provided on the sloped roof member side inside the sloped roof and opened on the back of the hut, and is second from the first ventilation port of the ventilation path. It is a building shed ventilation structure where a filter member is installed between the vents.

In this case, the second vent is
The eaves tip end side end of the sloped roof member and the tip of the eaves vertical member are spaced apart and formed therebetween.

  In addition, the air passage is a first drainer that covers the eaves vertical member, and extends downward from the eaves tip end side of the sloped roof member and is bent at the inclined extension side and the eaves tip to hang down. And a second drainer composed of vertical sides are arranged in parallel.

In addition, the shape based on the cross-sectional shape in the vicinity of the eaves tip is adopted as the shape of the drainer. In the eaves tip formed by the eaves vertical part with the sloped roof in the embodiment of the present invention, the character of “he” is usually used. However, it is not limited to this shape.
In addition, the draining material is molded and processed with a lightweight metal, and waterproof processing such as application of waterproof paint is also applied.

  According to such a ventilation structure, ventilation can be performed without providing an opening in the eaves back ceiling, which is also a weak point in fire prevention. Moreover, even if there is no eaves ceiling, fireproof performance can be ensured, and the fireproof performance can be ensured by eliminating the through portion of the roof surface.

Here, the present invention relates to a roof hood ventilation structure of a building installed at the front end of the eaves where the gradient roof surface and the eaves vertical part of the roof having the attic space intersect, and the shape of the gradient roof is not limited. Examples include gable-shaped gradient roof buildings, dormitory-shaped gradient roof buildings, and buildings in which a portion of the flat roof has a sloped roof shape. As long as the roof has such a configuration, it can be applied to a roof having any detailed structure.
The attic ventilation structure is a conceptual term including a ventilation device, a ventilation unit, a ventilation facility, and the like.

  In addition, the eave tip end portion is a portion (so-called eave tip) where an extension line upward of the eaves vertical portion intersects with an extension line of the sloped roof portion in the downward slope direction. For example, it is a portion where an outer wall or nose tip plate which is a vertical eave portion intersects with a roof base material such as a roof panel or rafter which is a sloped roof portion or a field base plate material laid on the roof base material. In the present invention, the eaves structure of the roof is not particularly limited, and a roof having a general structure in which the roof finishing material extends outwardly from the outer wall of the building may be used. However, it is preferable that the building has a sloped roof structure, which is located on the inner side of the building outer wall (parapet) and cannot constitute the eaves ceiling, such as a sloped roof structure provided on a part of the roof surface of the land roof. Used for.

In the present invention, from the eaves vertical member constituting the vertical part of the eaves of the building, to the sloped roof member constituting the gradient roof, straddling the eaves tip where these members intersect, along the cross-sectional shape of the eaves A ventilation channel is installed.
Here, the air passage is composed of a first air vent that is open to the eaves vertical member side to the outside air, and a second air vent that is provided on the sloped roof member side and is open to the shed back side.
In particular, in order to secure the second vent hole, the eaves vertical member and the sloped roof member are separated from each other, or the upper end of the eaves vertical member is separated from the tip of the base plate as the sloped roof surface member, The two vents are formed between the vent path from the upper end of the eaves vertical member toward the tip of the base plate that is a sloped roof member.
This air passage is preferably a pair of air passage members that also serve as draining members provided at the nose tip (tip end of the eaves) of the sloped roof.
There are two draining plates that straddle the front edge of the eaves, fixed in parallel from the nose plate surface along the slope surface (in the shape of ""), and the lower end of the nose plate (or outer wall) that is the eaves tip vertical member It is formed so that outside air can be introduced. The two draining plates are arranged with an opening so as to secure a second ventilation hole that communicates the ventilation path and the back of the shed before the tip of the base plate that is the sloped roof member.
Thereby, outside air flows in from the 1st ventilation port of the said ventilation path, and is introduce | transduced into a cabin back via a 2nd ventilation port, On the other hand, the stagnation air of a cabin back is exhausted from a ridge ventilation member. The first draining drain and the second draining drain may be any shape as long as an air passage can be secured between the first draining drain and the second draining drain. The second drainer is an inclined extended side extending outwardly along the roof finishing material from the upper surface of the base plate to at least substantially the tip of the roof finishing material, and is bent downward from the inclined extended side. The shape has a vertical side extending. In addition, the first drainer has a shape that can secure an air passage when disposed opposite to the second drainer having such a shape, and may be formed of a single member. For example, the first drainer is provided on the rooftop of a flat roof building. It may have a structure integrated with a member disposed on the eaves edge, such as a drainage groove or an eaves wall on the outer wall.

The filter member may be disposed at any location in the ventilation path as long as it is accommodated in the ventilation path. However, in the case where the second drainer has an inclined extension part and a vertical part, an example is given. Then, one or a plurality of filter members are accommodated in the air passage portion formed by the inclined extension portion of the second drainer, and in another example, the air passage portion formed by the vertical portion of the second water drainer. One or more filter members may be accommodated. In a further example, one or more filter members are accommodated in both the air passage portion formed by the inclined extension portion and the air passage portion formed by the vertical portion.
In any of these configurations, the ventilation structure is excellent in design because it is shielded from the outside by the second drainer, and is also excellent in waterproofness because of the draining action from the outside. The filter member is preferably installed over the entire cross section of the vent passage.

In the second invention, the inside of the filter member is a ventilation member configured as a plurality of through-hole structures. The filter member is preferably a nonflammable material. For example, a nonflammable material such as a molding material obtained by forming an aluminum plate into a honeycomb shape can be used. When the flame blocking member is disposed on the filter member, the filter member may be a combustible material, for example, a molding material formed from resin.
According to such a configuration, a compact ventilation structure can be obtained while ensuring a sufficient amount of ventilation.

  In the third invention, preferably, the ventilation structure is continuously installed in the direction of the roof. With such a configuration, a sufficient amount of ventilation can be secured.

  In the fourth aspect of the invention, it is desirable that a flame blocking member is disposed on the filter member. The flame-blocking member expands in the event of a fire and shuts off the air passage, and is normally in a contracted state, so it does not interfere with the air passage of the air passage. In addition, the spread of fire from the neighbors can be prevented more reliably, and fire prevention measures will be perfect.

  Here, the flame blocking member may be installed anywhere, for example, if it is in a position where it can expand and block the air passage in the event of a fire, a plurality of filter members are arranged separately in the air passage, Can be placed in between. Further, a hollow portion may be provided in the filter member, arranged there, and integrated with the filter member.

The above is the present invention, but various other aspects understood and understood by those skilled in the art from the embodiments described below are also included in the subject of the present invention.
For example, the following aspects are also objects of the present invention.
(1) A pair of air passage members made of a non-combustible material having a plurality of air passages are fixed to the plate-like body with the air passages spaced apart in the coaxial direction, and the plate-like body is attached to the plate-like body at the time of non-fire. A filter member in which a flame blocking member which is in a contracted state and expands due to heat in the event of a fire is positioned and fixed between the pair of air passage members.
(2) A roof ventilation filter member in which an air passage member made of a material having a plurality of air passages is fixed to one plate-like portion of the second drainer.
(3) A pair of air passage members made of a material having a plurality of air passages are fixed to one plate-like portion of the second water drainer with the air passages being spaced apart in the coaxial direction, A roof ventilation filter member in which a flame blocking member which is in a contracted state during a non-fire and expands by heat during a fire is positioned and fixed between the pair of air passage members on the one plate-like portion.
In addition, although it is preferable that a ventilation path member (plate-shaped body) has nonflammability, when a flame interruption | blocking member is provided, it may be combustible.

According to 1st invention of this application, since ventilation can be taken in the eaves front part also about the gradient roof without an eaves protrusion (eave back ceiling), the ventilation performance of a hut back is not reduced. In addition, since the air passage that also functions as a drainer to ensure the waterproofness of the eaves is formed, the number of members is small and the shed ventilation structure is not complicated.
According to the second invention of the present application, it is possible to provide a ventilation opening without providing an opening in the eaves back ceiling, which is a weak point in fire prevention. Moreover, even if there is no eaves ceiling, the fire prevention performance is ensured, and the ventilation structure that ensures the fire prevention performance by eliminating the penetration part of the roof surface is obtained.
Moreover, since the filter member is hidden behind the roof finish surface, the design (design) is good and the ventilation amount can be secured. According to the third aspect of the invention, it is possible to secure a further air flow rate. According to the fourth aspect of the invention, the fire prevention performance is further improved, and the fire does not spread to the back of the hut.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

1 to 4 are schematic views showing a state in which a hut ventilation structure according to a first embodiment of the present invention is provided in a building.
First, the structure of the roof of the building will be described. In FIG. 1, reference numeral 2 denotes a roof base material that forms a roof hut and has a sloped roof structure inclined downward from the center of the building toward the outer wall. . On the upper surface of the roof base material 2, the heat insulating material 18 and the field board 3 are laid in a laminated state over substantially the entire roof base material 2, and each lower end surface is fixed to be the same surface. That is, the lower edge side end surface 2a of the roof base material 2 and the lower edge side end surface 3a of the base plate 3 are positioned on the same plane substantially orthogonal to the direction in which the roof extends. A roof finishing material 11 including tiles and the like is laid on the field board 3 so as to be inclined along the field board 3 in a roof gradient. As is apparent from the figure, in this embodiment, only a slight gap is formed between the roof finishing material 11 and the field board 3, and not a vent hole.

  In FIG. 1, reference numeral 16 denotes an outer wall of the building. A concave drainage groove 13 whose bottom surface is inclined downward toward the center is formed inside the upper portion thereof, and an outer edge of the outer wall 16 is formed on the outer side. The side edge portion and the lower surface on the inside are supported by the eaves vertical member 4 and provided. A roof finishing material 11 extending along the longitudinal direction of the outer wall 16 is attached to the upper portion of the outer wall 16 so as to cover the outer side edge of the drainage groove 13.

  Here, the roof finishing material 11 extends further downward than the lower edge side end surface 3 a of the field board 3, but the lower end edge 11 a is provided with the drainage groove 13 on the inner side of the outer wall 16. It is terminated at an upper position near the inside of the drainage groove 13 on the inner side. That is, the lower end edge 11 a of the roof finishing material 11 is terminated at a position slightly outside the inner side surface of the drainage groove 13 so that raindrops flowing down along the roof can be accurately received.

  The attic ventilation structure according to the first embodiment is preferably formed on the roof without the eaves as described above, the second drainer 6 attached to the upper surface edge of the field board 3, and the second The first drainer 5 disposed opposite to the second drainer 6 below the drainer 6, and the air passage 7 formed between the second drainer 6 and the first drainer 5. A filter member 10 is provided.

  The second drainer 6 is a plate member formed of a lightweight metal having a cross-sectional “height” shape and applied with a waterproof paint, and a first portion that becomes an inclined extension 6a in the installed state, and the first The second portion which is bent and extends from the portion and becomes the vertical portion 6b in the installed state is provided, the end portion side of the first portion is fixed to the upper surface of the field board 3, and the inclined extension portion 6a is provided. It extends outward along the roof finishing material 11 from the upper surface of the field board 3 to at least a position slightly protruding from the lower end edge 11a of the roof finishing material 11, and the vertical portion 6b extends downward. It is arranged to be located in. As apparent from FIG. 2, the second drainer 6 is a member that covers the roof surface and the eaves tip end N of the eaves vertical part continuously in the direction of the roof.

  In the example of FIG. 1, the first drainer 5 is integrally formed so as to cover the eaves vertical member 4 and also serve as a plate member that forms the drainage groove 13. That is, the drainage gutters 5b1 to 3 are formed so as to constitute the drainage groove 13. Further, the first drainer 5 is bent inward at the upper edge of the eaves vertical member 4 from the inner side surface part 5a along the substantially U-shaped shape of the eaves vertical member 4 and directed toward the inside of the building. Further, it is continuous with the bent side 5c extending along the slope of the roof, and its edge 5d is raised upward for returning water. And the site | part containing this inner side part 5a and the bending part 5c comprises the 1st drainer 5 located facing the 2nd drainer 6, and between the 2nd drainer 6 and the 1st drainer 5 An air passage 7 is formed in the inner wall. This first drainer 5 is also a member that covers the eaves tip N formed by the sloped roof surface and the eaves vertical part in the direction of the sloped roof.

The filter member 10 is accommodated over the entire cross section of the air passage 7 between the inclined extension 6a of the second drainer 6 and the bent part 5c of the first drainer 5 (drainage groove 13). That is, as apparent from FIG. 1, the second drainer 6 and the first drainer 5 are continuously arranged not only in the vertical direction but also in the direction of the roof.
The filter member 10 is a ventilation member 10a having a plurality of ventilation channels. Specifically, as shown in detail in FIG. 3A, the filter member 10 is made of aluminum in which a large number of honeycomb-shaped channels are formed. It is the honeycomb ventilation member 10a, and the inlet / outlet of the ventilation channel is communicated with the ventilation channel 7. Here, the filter member 10 is preferably a non-combustible material. However, as shown in FIG. 3B, when the flame blocking member 12a is disposed on the filter member 12, the flame blocking member 12a Since the combustion can be prevented, the filter member 12 and the ventilation member 10a may be made of a combustible material.

  In such a ventilation structure, the outside air flows into the first vent 8a of the vent passage 7 constituted between the first drainer 5 at the inner portion of the drainage groove 13 and the second drainer 6 at the outer side thereof, and the filter It passes through the member 10 and circulates from the second vent 8b toward the back of the cabin 9. On the other hand, the stagnation air in the back of the shed is exhausted from the building ventilation member 22 (FIG. 4).

  In such an embodiment, the air vent 7 is not provided with a vent on the sloped roof surface or the eaves ceiling, and the air passage 7 has a filter member 10 having a ventilating passage structure having a small honeycomb or corrugated cross section. Are arranged so as to circulate in an upward gradient direction from the front end of the eaves vertical member 4 toward the eaves bottom top end 15a of the gradient roof member 15, so that rain and snow can be prevented from blowing in and sufficient waterproofness can be secured. . In addition, insects can be prevented from entering. In addition, if a nonflammable filter member is used, it exhibits the function of effectively preventing the spread of fire from the neighboring house, is excellent in fireproofing performance, and does not generate toxic gas or the like even if a fire starts. Moreover, even if it is a filter member which does not have nonflammability, if a flame barrier is incorporated and used together, the same effect will be acquired. Furthermore, since the filter member 10 is continuously arranged along the longitudinal direction of the roof, a sufficient amount of ventilation can be secured. Moreover, since the filter member 10 is hidden by the roof finishing material 11 and the second drainer 6, it is excellent in design and does not become noise in the design of the roof of the building.

  FIG. 4 is a cross-sectional view of the building showing the position of the cabin ventilation structure 1 according to the first embodiment of the present invention in a building having a flat roof. The attic ventilation structure 1 is integrated with members disposed at the front of the eaves, such as the drainage groove 13 provided on the roof of the flat roof shown in FIG. 4 and the eaves wall 14 of the outer wall (FIGS. 7 and 8). Arranged in structure. The present invention is particularly effective as a ventilation structure of the eaves tip end portion N formed by the sloped roof surface and the eaves tip vertical part of the sloped roof 19 protruding on the roof of such a land roof structure.

FIG. 5 shows an attic ventilation structure according to the second embodiment of the present invention, and members having the same reference numerals as those in FIG. 1 are the same as those in the embodiment of FIG. Omitted.
In this embodiment, the space | interval between the lower edge 11a of the roof finishing material 11 and the lower edge side end surface 3a of the roof base material 2 or the lower edge side end surface 3a of the field board 3 becomes short compared with embodiment of FIG. The inner side surface portion 5a of the drainage groove 13 terminates in a state of extending upward, and the inner side surface portion 5a constitutes the first drainer 5. A filter member 10 is accommodated between the vertical portion 6b of the second drainer 6 and the first drainer 5 (inner side surface portion 5a of the drainage groove 13) with the flow path directed in the vertical direction.

  This embodiment also has the same operational effects as the first embodiment. Moreover, compared with 1st embodiment, the roof base material 2 and the baseplate 3 can be extended to the pole vicinity of the eaves-end vertical member.

FIG. 6 shows a shed ventilation structure according to a third embodiment of the present invention. This embodiment is different from the embodiment of FIG. 1 only in the configuration of the filter member, and the other configurations are the same. Therefore, other than the filter member, the same reference numerals as in FIG.
An example of the filter member 12 used in FIG. 6 will be described with reference to the enlarged perspective view of FIG. In the figure, the filter member 12 has the same structure as the filter member 10 except that the ventilation member 10a is divided into two parts and the lengths of the plurality of flow paths are shortened. The members 10a and 10a are spaced apart from each other in the flow direction of the flow path, and the flame blocking member 12a is fixedly disposed in the air passage therebetween. The flame blocking member 12a expands due to heat when the surrounding temperature becomes high at the time of a fire, and can fill and block the ventilation path between the ventilation members 10a and 10a. Although it is composed of a graphite-based thermal foaming material, any material may be used as long as the same blocking effect can be obtained. The ventilation member 10a and the flame blocking member 12a are fixed and integrated by the outer frame 12b to form the filter member 12. By integrating the filter member 12 with the outer frame 12b, it is possible to ensure the strength at the time of roof construction. Furthermore, by providing the outer frame frame 12 with a fixing piece 12c having screw fixing holes 12d, the filter member 12 can be stably fixed to the roof surface in a packaged state. It is advantageous.

As an embodiment of the filter member 12 having such a flame blocking member, (1) a pair of ventilation passage members such as an aluminum honeycomb ventilation member are separated from each other in a plate-like body with the ventilation passage directed in the coaxial direction. A filter member in which a flame blocking member is positioned and fixed between the pair of ventilation path members; and (2) one plate-like portion of the second drainer is made of aluminum. (3) a pair of ventilation path members such as an aluminum honeycomb ventilation member formed on one plate-like portion of the second drainer; The air passage is fixedly spaced apart in the coaxial direction, and a flame blocking member is positioned between the pair of air passage members and fixed to the one plate-like portion of the second drainer. Filter material for roof ventilation The like can be considered.
In the above embodiment, the ventilation member 10a is an aluminum honeycomb ventilation member. However, a material having waterproofness and incombustibility is preferable, and other metal materials or ceramics other than aluminum can be used. However, the air passage member (plate-like body) may be a combustible material when a flame blocking member is provided.
Further, as long as the flow path is structured so that rainwater does not easily recirculate or flow, a ventilation structure other than a honeycomb structure, for example, a corrugated ventilation structure may be used.
In addition, the filter member is configured to extend continuously in the roof spar direction, but may be disposed at a point in the roof spar direction and may be discontinuous, and the filter member is detachable or replaceable. It is also possible to make the structure to be an integrated filter member into smaller segments and assemble at the site for convenient transportation.

The third embodiment shown in FIG. 6 has the same effect as that of the embodiment shown in FIG.
Furthermore, in this embodiment, when the air flowing into the filter members 12 and 12 becomes hot due to a fire in the neighbor, the flame blocking member 12a expands due to heat, expands in the space between the filter members 12 and 12, and ventilates. Fill the road and block it. As a result, it is possible to reliably prevent the spread of fire from the fire of the neighbor.

FIG. 7 shows an attic ventilation structure according to a fourth embodiment of the present invention. This embodiment is the same as the embodiment of FIG. 1 except for the structure of the drainage groove and the first drainer. Therefore, the same members as those in FIG.
In FIG. 7, 14 is an eaves ridge disposed along an outer wall (not shown), from a bottom portion 14a, an inner side portion 14b extending upward from an inner edge of the bottom portion 14a, and an outer edge of the bottom portion 14a. And an outer side portion 14c extending upward to a position higher than the inner side portion 14b. In this embodiment, the first drainer 5 is provided opposite to the second drainer 6 separately from the eaves bowl 14. The first drainer 5 is fixed to the eaves vertical member 4, and the upper edge of the side part 5a extending in the vertical direction facing the vertical part 6b of the second drainer 6 is bent inward toward the inside of the building. The upper bent portion 5e extends, and the edge portion 5d is bent upward at a right angle, and the lower edge of the side surface portion 5a is bent outward and downward to form the lower bent portion 5f. Is directed toward the eaves wall 14, and raindrops that fall along the first drainer 5 are guided to the eaves wall 14. Further, the lower end of the vertical portion 6b of the second drainer 6 is positioned above the lower bent portion 5f of the first drainer 5 at a predetermined interval from the first drainer 5, and the air into which the outside air flows between them. It is said to be a mouth.

In this embodiment, outside air flows into the air passage 7 from between the second drainer 6 and the first drainer 5, passes through the filter member 10, exits the airway 7 again, and runs along the lower side of the roof base material 2. It circulates toward the center of the roof.
Even in this embodiment, a sufficient amount of ventilation can be secured and high fireproof performance can be achieved.

FIG. 8 shows a hut ventilation structure according to a fifth embodiment of the present invention. This embodiment is an embodiment in the case of a roof without a ridge, and is a basic embodiment of the present invention. Compared with the embodiment described in FIG. 7, the structure is the same except for the structure of the outer wall (eave edge vertical member) 17 and the vents 8a and 8b and the presence or absence of a heat insulating material. Therefore, the same members as those in FIG.
In the embodiment shown in FIG. 8, the filter member 12 is installed at the eaves portion of the roof without a ridge. Moreover, in this embodiment, the 1st drainer 5 is directly arrange | positioned by the outer wall 17 as the eaves vertical member 4 of FIG. 7, and the outer wall 17 is equivalent to the eaves vertical member 4 of embodiment shown in FIG. Plays. The outside air introduced from the first vent 8a passes between the frames of the roof panel, which is the roof base material 2, from the second vent 8b via the vent path 7, and then the sloped roof member 15 (field plate). 3 and the roof panel) directly into the hut 9 located below. On the other hand, the stagnation air in the cabin 9 is exhausted from the building ventilation member 22 (FIG. 4).
In this embodiment, a heat insulating material or the like may be laid below the base plate 3 as in the other embodiments, and the material of the roof base material 2 is selected from a rafter of wood or steel.

It is a schematic sectional drawing of the principal part of the cabin back ventilation structure which concerns on 1st embodiment of this invention. It is a perspective view of the principal part of the ventilation structure of FIG. FIG. 2 is an enlarged perspective view (a) of a ventilation member of the filter member of FIG. 1 and an enlarged perspective view (b) of a filter member having a flame shielding member. It is sectional drawing of the building which shows the position of the attic ventilation structure of this invention in the building which has a flat roof. It is a figure similar to FIG. 1, and is a schematic sectional drawing of the principal part of the cabin back ventilation structure which concerns on 2nd embodiment of this invention. It is a figure similar to FIG. 1, and is a schematic sectional drawing of the principal part of the cabin back ventilation structure which concerns on 3rd embodiment of this invention. It is a figure similar to FIG. 1, and is a schematic sectional drawing of the principal part of the cabin back ventilation structure which concerns on 4th embodiment of this invention. It is a figure similar to FIG. 1, and is a schematic sectional drawing of the principal part of the cabin back ventilation structure which concerns on 5th embodiment of this invention.

Explanation of symbols

1 Attic ventilation structure 2 Roof base material (roof frame and rafters)
2a Lower edge side end face 3 of the roof base material 3 Base plate 3a Lower edge side end face 4 of the base plate 4 Eaves edge vertical member 5 First drainer 5a First drainer inner side surface parts 5b1 to 3 First drainer drain side 5c 1st 5d of the first draining edge 5e 1st draining upper part 5f first draining lower folding part 5g first draining lower end 6 second draining 6a second Drainage extension 6b Second drainage vertical part 7 Ventilation path 8a First ventilation port 8b Second ventilation port 9 Hut back 10 Filter member 10a Ventilation member N Eaves tip 11 Roof finishing material 11a Bottom edge of roof finishing material 12 Filter member (with flame blocking member)
12a Flame blocking member 12b Outer frame frame 12c Fixing piece 12d Screw fixing hole 13 Drain groove 14 Eave ridge 14a Eave ridge inner side portion 14c Eave ridge outer side portion 15 Gradient roof member 15a Gradient roof member 15a Eaves bottom top end 16 Outer wall (lightweight cellular concrete board)
17 Outer wall (vertical eaves vertical member; lightweight cellular concrete board)
18 Insulation 19 Gradient roof 20 Rooftop 21 Parapet 22 Building ventilation member

Claims (7)

It is a shed ventilation structure of a building with a sloped roof,
The attic ventilation structure is
From the eaves vertical member that forms the vertical part of the eaves of the building,
It is continuously installed on the gradient roof member that forms the gradient roof across the eaves tip,
Has a waterproof air passage for draining the eaves,
The ventilation path includes a first ventilation opening that opens downward on the exterior eaves vertical member side, and a second ventilation opening that is provided on the gradient roof member side inside the gradient roof and opens to the back of the hut. Have
A building roof ventilation structure in which a filter member is installed between the first ventilation port and the second ventilation port of the ventilation path. The second vent is
The building roof ventilation structure according to claim 1, wherein the eaves tip end side end of the sloped roof member and the tip of the eaves vertical member are spaced apart and formed therebetween. The air passage is
A first drainer covering the eaves vertical member;
A second drainer comprising a slope extending side extending from the end of the eaves tip end of the sloped roof member in a downward slope direction and a vertical side bent and suspended at the eaves tip end;
The building attic ventilation structure according to claim 1 or 2, wherein the two are arranged in parallel.   4. The air passage according to claim 1, wherein the air passage is continuously installed in the direction of the roof, and the filter member is continuously installed in the direction of the roof. The attic ventilation structure of the building according to one item.   The inside of the said filter member is comprised as a some through-hole structure, The shed back ventilation structure of the building as described in any one of Claim 1 to 4 characterized by the above-mentioned.   The said filter member is a structure containing a flame cutoff member, The shed ventilation structure of the building as described in any one of Claim 1 to 5 characterized by the above-mentioned.   An eaves-end structure of a sloped roof surface of a building having the attic ventilation structure according to any one of claims 1 to 6.

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