JP3919774B2 - Building ventilation equipment - Google Patents

Description

  The present invention relates to a ventilation device that can efficiently remove moisture in a wall of a building such as a wooden house to improve durability of the entire building.

  Due to the high thermal insulation and high airtightness of the wooden building, the interior of the wall of the outer wall becomes humid in the winter, and moisture enters from the inside of the room, causing a problem of decay in the wall. As a method for solving this problem, a method of ventilating the outside or the inside of the outer wall (the inside of the base of the outer wall) is used. One of the typical methods is to attach a vertical trunk edge to the base of the outer wall by a conventional shaft construction method, and to lay an exterior material on the trunk edge to mount the base in the space between the base of the outer wall and the outer wall material. This is a method that takes outside air from the vicinity and ventilates between the exterior material and the outer wall base to the vicinity of the eaves girder. However, in this method, when a structural face material is stretched on the framework of the outer wall, the outside of the face material is ventilated, so moisture entering from the indoor side accumulates inside the face material and does not escape to the outside. there were. Therefore, as a method for solving this, a ventilation method in which a ventilation layer is provided on the inside of the structural face material of the outer wall and moisture in the wall is discharged has been proposed earlier by the present applicant (for example, Patent Document 1). reference.).

Japanese Patent No. 2642593

  In the above-mentioned Patent Document 1, a vent hole communicating with either one of the two vent paths formed on the outer wall of the lower floor and the outer wall of the upper floor is provided through the horizontal member in the vertical direction. A vent groove that communicates with the other vent passage is formed on at least one of the upper and lower surfaces of the horizontal member, and the upper wall of the lower floor is connected to the upper part of the building so that the horizontal member such as a large beam wraps around the center of the building Even when it is stretched between the outer walls of the floor, a continuous air passage from the floor to the attic is secured on the outer wall.

  However, in Patent Document 1, although the horizontal ventilation of the entire wall and the vertical ventilation from the base to the girders are performed, the ventilation to the other wall surfaces in the horizontal direction is not performed, and therefore there is a portion where sufficient ventilation cannot be performed. There was a problem. That is, as shown in FIG. 14, in the case of a building set back to make a roof balcony part on the second floor, for example, the first floor wall 101 is good, but the second floor wall 102 communicates with the first floor wall and can ventilate. It was difficult and aeration was sometimes inhibited. As shown in FIG. 15, in the case of a building having a protruding corner portion and an entering corner portion in a planar form, lateral ventilation through the corner portion with the normal pillar forming the protruding corner portion 103 and the entering corner portion 104 is performed. However, there is a problem that efficient dehumidification cannot be achieved because the ventilation is performed only in the vertical direction.

  Therefore, in view of the conventional problems as described above, the present invention can achieve sufficient ventilation even in a set-back wall, and the ventilation in the vertical and horizontal directions can be taken in the vertical and horizontal directions in a flat form. An object of the present invention is to provide a ventilation device for a building that can achieve good dehumidification.

  In order to achieve the above object, the invention according to claim 1 is directed to a base of a lower floor in a wooden building where a part of the upper floor is set back with respect to the lower floor and a roof balcony portion is formed. An opening vent hole is provided, and an air passage that communicates with the vent hole is provided in a vertical direction along the wall of the lower floor between the face materials attached to the interior and the exterior from the base to the front trunk difference, A vent hole communicating with the road is provided in the front trunk difference forming the roof balcony part, and a vent path communicating with the vent hole is attached to the interior and the exterior ranging from the front trunk difference to the rear trunk difference forming the roof balcony part. A ventilation hole provided in a lateral direction along the floor of the roof balcony portion between the face materials, and a ventilation hole communicating with the ventilation passage is provided in a rear trunk difference forming the roof balcony portion, and an ventilation passage communicating with the ventilation passage is provided Take indoors and outdoors from the back waistline to the eaves Characterized in that between the vignetting surface material is provided longitudinally along the wall of the roof balcony unit.

According to a second aspect of the present invention, in the first aspect, a heat insulating material is disposed on the inner side of the building in the ventilation path provided on the wall of the lower floor and the wall of the roof balcony, and the roof balcony the building outside the air passage which is provided on the floor is heat-insulating material is disposed, and characterized in that the ventilation holes provided in the front barrel difference and rear cylinder difference is formed substantially in an L-shape type To do.

  According to a third aspect of the present invention, in a wooden building having an overhang portion formed on the upper floor, a vent hole having an upward opening is provided in the base of the lower floor, and a vent passage communicating with the vent hole is provided from the base. A vertical hole is provided along the wall of the lower floor between the face materials attached to the interior and the exterior of the back trunk difference, and a vent hole communicating with the vent path is provided in the rear trunk difference forming the overhang portion. In addition, a ventilation path communicating with the vent hole is provided in a lateral direction along the floor of the overhang portion between the face materials attached to the interior and exterior of the front trunk difference from the rear trunk difference forming the overhang portion, A ventilation hole that communicates with the ventilation path is provided in a front trunk difference that forms an overhang portion, and the ventilation path that communicates with the ventilation path is between the face materials attached to the interior and the exterior ranging from the front trunk difference to the eaves girder. Provided vertically along the wall of the overhang I am characterized in.

According to a fourth aspect of the present invention, in the third aspect, a heat insulating material is disposed on the inner side of the building in the ventilation path provided on the wall of the lower floor and the wall of the overhang portion. the building inside of the air passage which is provided on the floor is heat-insulating material is disposed, the vent hole in the front barrel difference and rear cylinder difference is formed in a substantially L-shaped form or a substantially oblique shape It is characterized by being.

The invention according to claim 5 is a wooden building in which a protruding corner portion and a corner portion are formed in a planar form, and a vent passage is provided in a vertical direction along a wall adjacent to the corner portion and the corner portion. The air passage is formed between face members attached to both indoor and outdoor surfaces between the pillars supporting the wall, and is provided between the pillars at the exit corner, the entrance corner, and the pillars. A vent hole communicating with the air passage is provided in the stud or the stalk material, and the air can pass through the air passage from the air passage to the adjacent walls in the lateral direction. The invention according to claim 6 is characterized in that, in claim 5, the protruding corner portion and the entering corner portion are formed at least in any one of the roof balcony portion, the overhang portion, and the surrounding soil.

The present invention is as described above, and in a wooden building where a part of the upper floor is set back with respect to the lower floor and a roof balcony portion is formed as described in claims 1 and 2, the set Sufficient ventilation can be achieved even in the back wall. In contrast to the setback, in a wooden building where an overhang portion is formed on the upper floor as described in claims 3 and 4, sufficient ventilation can be achieved even in the overhanged wall. Furthermore, in the building of the wooden construction in which the protruding corner portion and the entering corner portion are formed in a planar form as described in claims 5 and 6, in the protruding corner portion and the entering corner portion, the ventilation in the vertical direction as well as the lateral direction Efficient dehumidification can be achieved by removing the ventilation. Therefore, there is an excellent effect that the durability of the entire wooden building can be improved.

  Embodiments of the present invention will be described with reference to the accompanying drawings.

(Embodiment 1)
The first embodiment is implemented in a building in which a part of the upper floor is set back with respect to the lower floor and a roof balcony portion is formed. 1 is an enlarged perspective view of an essential part thereof, FIG. 2 is a longitudinal sectional view taken along line AA of FIG. 1, FIG. 3 is a transverse sectional view taken along line BB of FIG. 1, and FIG. It is a longitudinal cross-sectional view which follows the CC line of 1.

  Reference numeral 1 denotes a wooden two-story building, and a roof balcony 2 is set back at a part of a corner of the second floor. 3 is a base, 4 and 5 are trunk differences, 6 is a girder, and 7 is a pillar, and a plurality of them are arranged. A sweeping sash 8 is formed on one wall of the first floor where the roof balcony portion 2 is formed. The wall around the sash is plastered on the indoor side between the base 3 and the trunk difference 4 as shown in FIG. An interior base material 10 such as a board is attached, and an outer wall base material 11 such as a face material is attached to the outdoor side, and an air passage 12 is formed between the both base materials. Further, a ceiling material 13 is attached to the indoor side between the body difference 4 and the body difference 5, a floor material 14 is attached to the outside of the room, and an air passage 15 is formed between the both materials. Further, an interior base material 16 is attached to the indoor side between the trunk difference 5 and the girder 6, an outer wall base material 17 is attached to the outdoor side, and an air passage 18 is formed between the both base materials. Reference numerals 20, 21, and 22 denote heat insulating materials disposed in contact with the base material 10, the floor material 14, and the base material 16 in the ventilation paths 12, 15, and 18, respectively.

  The base 3 is provided with a vent hole 25 penetrating vertically so as to communicate with the vent path 12. A vent hole 26 is provided in the body difference 4 so as to penetrate the vent path 12 and the vent path 15 in a substantially L-shaped cross section. A vent hole 27 is provided in the trunk difference 5 so as to penetrate the vent path 15 and the vent path 18 in a substantially L-shaped cross section. Then, the air under the base 3 passes through the vent holes 25, 26, 27 and the vent paths 12, 15, 18 to the trunk difference 4 along the first floor wall even around the roof balcony portion 2 as indicated by an arrow a. Ventilation can be performed in the vertical direction, from there to the side difference between the trunk differences 4 and 5, and to the beam 6 along the wall of the second floor.

  On the other hand, the roof balcony portion 2 is formed with a protruding corner portion 30 and an entering corner portion 31 in a planar form, and the wall adjacent to the protruding corner portion and the entering corner portion is a column 7 and a column as shown in FIG. An interior base material 33 such as a gypsum board is attached to the indoor side of the space 7, and an outer wall base material 34 such as a face material is attached to the outdoor side, and an air passage 35 is formed between the both base materials. 32 is a stud, and 36 is a feather pattern material. A ventilation path 37 is formed between one column 7 and a column (not shown) with a similar configuration, and a ventilation channel 38 is formed between the other column 7 and a column (not shown) with a similar configuration. Reference numerals 40, 41, and 42 denote heat insulating materials disposed in the air passages 35, 37, and 38, respectively.

  One pillar 7 is provided with a vent hole 44 penetrating in a substantially L-shaped cross section so as to be able to communicate with the vent path 35 and the vent path 37. The other pillar 7 is provided with a vent hole 45 penetrating in a substantially L-shaped cross section so as to be able to communicate with the vent path 35 and the vent path 38. Ventilation holes 46 and 47 are provided in the inter-column 32 and the feather pattern material 36 provided so as to block the ventilation path 35 so that the ventilation path 35 can communicate with each other. Then, as shown by an arrow b through the vent holes 44 and 45 and the vent passages 37, 35, and 38, the air on the pillar side (not shown) is laterally extended around the roof balcony part 2 to the one pillar 7 along the second-floor wall. In the direction, the air can be ventilated laterally along the space between one pillar 7 and the other pillar 7 and from the other pillar to a pillar not shown.

  Further, as shown in FIG. 4A, an interior base material 48 such as a gypsum board is attached to the indoor side between the base 3 and the trunk difference 4 on the first floor wall where the roof balcony part 2 is not formed, and a surface material is provided on the outdoor side. An outer wall base material 49 such as is attached, and a ventilation path 50 is formed between both base materials, and a heat insulating material 51 is disposed in the ventilation path. Although not shown, the upper wall of the trunk difference 4 has the same configuration. Vent holes 52 and 53 are provided in the base 3 and the trunk difference 4 so as to penetrate vertically through the vent passage 50. With this configuration, as shown by an arrow c, air from the bottom of the base 3 can be vented from the vent hole 52 to the vent path 50 and further through the vent path to the vent path above the vent hole 53 of the trunk difference 4. ing. 55 is a sweeping sash formed on one wall of the second floor where the roof balcony portion 2 is formed, 56 is a sweeping sash formed adjacent to the first floor sweeping sash 8, and 57 is formed on the second floor above it. It is a small window.

  4B and 4C are modified examples of the vent holes provided in the base 3, and the vent holes 52 a of FIG. 4B are cross sections so that air from the indoor side of the base 3 can be vented to the vent passage 50. The vent hole 52b of (C) is similarly formed in a substantially L-shaped cross section. Otherwise, the configuration is the same as (A).

  As described above, in the building 1 in which the roof balcony part 2 is formed by setting back, the air from the bottom of the base 3 where the roof balcony part 2 is located has the vent holes 25, 26, 27 as described above. As shown by the arrow a through the air passages 12, 15 and 18, the first floor along the wall of the first floor to the trunk difference 4 in the vertical direction, and then from the trunk difference 4, 5 to the lateral direction, and the second floor wall. As a result, it was possible to ventilate up to the girder 6 and to communicate with the first-floor wall even in the set-back second-floor wall, which could not be done in the past, so that sufficient ventilation was achieved. In addition, the air from the left and right sides of the walls around the roof balcony portion 2 where the exit corner portion 30 and the entrance corner portion 31 are formed are also vent holes 44, 45, 46, 47 and the air passage 37 as described above. , 35, 38, as indicated by arrow b, along the second floor wall to one pillar 7, laterally between one pillar 7 and the other pillar 7, and the other pillar To the pillars (not shown) can be ventilated in the lateral direction, ensuring lateral aeration that could not be achieved in the past. Further, even on the first floor wall where the roof balcony portion 2 is not formed, the air around the base 3 is changed from the vent hole 52 to the vent passage 50 as shown by the arrow c as described above, and further to the trunk difference 4 through the vent passage. Ventilation can be made from the ventilation hole 53 to the ventilation path above it. Although not all can be explained individually, this building 1 can be ventilated by arrows in FIG.

(Embodiment 2)
The second embodiment is implemented in a building in which an overhang portion is formed on the second floor. In this Embodiment 2, it demonstrates as what was implemented in another location of the same building as the building shown in Embodiment 1. FIG. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. FIG. 5 is an enlarged perspective view of an essential part thereof, and FIG. 6 is a longitudinal sectional view taken along line DD of FIG.

  In FIG. 5, reference numeral 60 denotes an overhang portion formed on the second floor of the building 1. A sweeping sash 61 is formed on one wall on the first floor where such an overhang portion 60 is formed. The wall around the sash is a chamber between the base 3 and the trunk difference 4 as shown in FIG. An interior base material 10 such as a plaster board is attached to the inside, and an outer wall base material 11 such as a face material is attached to the outdoor side, and an air passage 63 is formed between the both base materials. Further, a ceiling material 13 is attached to the indoor side between the body difference 4 and the body difference 5, and a floor material 14 is attached to the outside of the room, and an air passage 65 is formed between the both materials. Further, an interior base material 16 is attached to the indoor side between the trunk difference 5 and the girder 6, an outer wall base material 17 is attached to the outdoor side, and a ventilation path 68 is formed between the both base materials. Reference numerals 20, 21, and 22 denote heat insulating materials disposed in contact with the base material 10, the floor material 14, and the base material 16 in the ventilation paths 63, 65, and 68, respectively.

  The base 3 is provided with ventilation holes 70 penetrating vertically so as to communicate with the ventilation path 63. A vent hole 71 is provided in the body difference 4 so as to penetrate the vent path 63 and the vent path 65 in a substantially L-shaped cross section. A vent hole 72 is provided in the trunk difference 5 so as to penetrate the vent path 65 and the vent path 68 in a substantially oblique cross section. The air under the base 3 passes through the vent holes 70, 71, 72 and the vent passages 63, 65, 68, as shown by the arrow d, and reaches the waist difference 4 along the wall on the first floor even around the overhang portion 60. Ventilation can be performed in the vertical direction, from there to the side difference between the trunk differences 4 and 5, and to the beam 6 along the wall of the second floor. Further, the second corner on which the overhang portion 60 is formed and the first floor below the second corner are formed with the protruding corner portion 30 as shown in the first embodiment, and this protruding corner portion is also described in the first embodiment. Thus, the ventilation of the horizontal direction shown by the arrow b can be performed. 62 is a middle sash formed on one wall of the second floor where the overhang portion 60 is formed.

  FIG. 7 is an enlarged partial view of the E portion of FIG. 6, and is a modification of the vent hole provided in the trunk difference 5. In this example, the vent hole 70 a is provided penetrating in a substantially L-shaped cross section.

  FIG. 8 is an enlarged partial view of the F portion of FIG. 6, and is a modification of the vent hole provided in the trunk difference 4. In this example, the vent hole 71 a is provided so as to penetrate in a substantially oblique section.

  As described above, in the building 1 in which the overhang portion 60 is formed, the air from the bottom of the base 3 where the overhang portion 60 is located has the vent holes 70, 71, 72 and the vent passage 63 as described above. , 65, 68, and as indicated by an arrow d, the air below the base 3 also extends around the overhang portion 60 in the vertical direction along the first floor wall to the trunk difference 4, and then between the trunk differences 4, 5 And can be ventilated laterally and up to the spar 6 along the walls of the second floor. In addition, the air from the left and right sides of the wall having the protruding corner portion 30 can ensure lateral ventilation as described above. As a result, the air below the base 3 indicated by the arrow d can be vented not only in the vertical direction but also in the horizontal direction indicated by the arrow b, and fine ventilation is ensured in the vertical and horizontal directions of the wall. Even in the case of the second embodiment, not all of them can be explained individually, but the building 1 can be ventilated by arrows in FIG.

(Embodiment 3)
The third embodiment is implemented in a building in which a protruding corner portion and an entering corner portion are formed around the soil in a planar form. In this Embodiment 3, it demonstrates as what was implemented in another location of the same building as the building shown in Embodiment 1,2. FIG. 9 is an enlarged perspective view of the main part.

  In FIG. 9, reference numeral 75 denotes a space around the soil. As described above, the vertical and horizontal ventilations indicated by the arrows b and c can also be performed in the protruding corner portion 30 and the entering corner portion 31 around the soil. Since other configurations are the same as those in the first and second embodiments, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  In the third embodiment, in the surrounding space 75 where the protruding corner portion 30 and the entering corner portion 31 are provided, air from below or around the base 3 is provided in the base 3 and the trunk difference 4, or between them. Ventilation holes provided in pillars at the ventilation path, the exit corner, and the entrance corner, and the vertical and horizontal ventilation through the ventilation path and finally escape upward from the upper floor. However, in addition to such ventilation, there is an example in which ventilation in the vertical direction is possible without providing ventilation holes in the base 3 and the trunk difference 4 etc. in the surrounding space 75 where the protruding corner portion 30 and the entering corner portion 31 are provided. 10 is shown in FIG. 10 (partially omitted in FIG. 10).

  According to this, as shown in the illustrated example, the corner or the central portion of the lower end portion of the outer wall base material 11 attached between the base 3 and the trunk difference 4 around the gap 75 with the protruding corner portion 30 and the entering corner portion 31 is cut out. The openings 77 and 78 for ventilation are formed between the base 3, the pillar 7 and the outer wall base material 11 by the notches. Therefore, according to this embodiment, air enters the air passage 79 from the openings 77 and 78 near the lower end of the base 3, and the air that has entered the air passage 79 travels in the vertical direction and is close to the trunk difference 4 in the same manner as described above. Thus, ventilation can be performed by exiting from the openings 77 and 78 formed as described above or from the openings 77 formed in the middle. In the illustrated example, a wall with a small window 80 on the left, a wall without a stud at the center, and a wall with a stud on the right are shown. Reference numeral 82 denotes a stud, and 83 denotes a feather pattern material.

  According to the ventilation method as described above, it is not necessary to provide ventilation holes in the pillar 7, the base 3, the trunk difference 4, and the like, and thereby vertical ventilation can be performed in the protruding corner portion 30 and the entering corner portion 31.

  In each of the above embodiments, the description has been made assuming that the present invention is implemented in another part of the same building, but it is needless to say that this may be implemented in different buildings. Each embodiment is merely a preferable example, and it is needless to say that a specific structure can be appropriately changed and modified within the scope of the claims in implementation.

It is a principal part expansion perspective view which shows Embodiment 1 of this invention. It is a longitudinal cross-sectional view which follows the AA line of FIG. It is a cross-sectional view which follows the BB line of FIG. (A) is a longitudinal cross-sectional view which follows the CC line of FIG. 1, (B), (C) is a longitudinal cross-sectional view which shows the modification of (A). FIG. 6 is an enlarged perspective view of a main part showing Embodiment 2. It is a longitudinal cross-sectional view which follows the DD line | wire of FIG. It is a fragmentary figure of the modification of the vent hole which expands and shows the E section of FIG. It is a fragmentary figure of the modification of the vent hole which expands and shows the F section of FIG. FIG. 10 is an enlarged perspective view of a main part showing a third embodiment. It is a disassembled expansion perspective view of the principal part which shows an example which enabled ventilation in the vertical direction, without providing a vent hole in a base, a trunk difference, etc. in the same as the above. It is a longitudinal cross-sectional view in alignment with the wall with a pillar as above. It is a transverse cross section along a wall with a small window same as the above. It is a cross-sectional view along a different part of a wall with a small window same as the above. It is the schematic which shows the building which carried out the conventional setback. It is the schematic which shows the building with the conventional exit corner part and entrance corner part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Roof balcony part 3 Base 4,5 Torso 6 digits 7 Pillar 10, 16, 33, 48 Interior base material 11, 17, 34, 49 Exterior wall base material 12 Ventilation path 13 Ceiling material 14 Floor material 15, 18 Ventilation Path 20, 21, 22 Heat insulating material 25, 26, 27 Ventilation hole 30 Outlet corner 31 Inlet corner 32 Stairway 35, 37, 38 Ventilation path 36 Feather pattern material 40, 41, 42 Thermal insulation material 44, 45, 46, 47 Ventilation hole 50 Ventilation path 51 Heat insulating material 60 Overhang part 63, 65, 68 Ventilation path 70, 71, 72 Vent hole 75 Around soil 77, 78 Ventilation opening 79 Ventilation path

Claims (6)

  In a wooden building where a part of the upper floor is set back with respect to the lower floor to form a roof balcony, a vent hole with an upward opening is provided in the base of the lower floor, and the vent path communicates with the vent hole Is provided in the vertical direction along the wall of the lower floor between the face materials attached to the outside of the room from the base to the front trunk difference, and the front trunk difference in which the vent hole communicating with the vent passage forms the roof balcony part A vent passage communicating with the vent hole is provided between the front and rear trunks that form the roof balcony portion, and is installed along the floor of the roof balcony portion between the floor materials that are installed indoors and outdoors. A face material provided with a vent hole communicating with the vent path formed in a rear trunk difference forming a roof balcony portion, and the vent path communicating with the vent path attached to the interior and exterior of the eaves girder from the rear trunk difference Along the wall of the roof balcony between Venting device of a building, characterized in that provided in the direction.   Insulation is provided on the inside of the building in the ventilation path provided on the wall of the lower floor and the roof balcony, and the building is insulated on the outside of the building in the ventilation path provided on the floor of the roof balcony. The building ventilating device according to claim 1, wherein a material is disposed, and vent holes provided in the front trunk difference and the rear trunk difference are formed in a substantially L-shaped cross section.   In a wooden building with an overhang formed on the upper floor, the base of the lower floor is provided with a vent hole with an upward opening, and an air passage communicating with the vent hole is attached to the interior and the outside of the base from the base to the rear waistline. A ventilation path provided in the longitudinal direction along the wall of the lower floor between the formed face members, and a ventilation hole communicating with the ventilation path is provided in a rear trunk difference forming an overhang portion, and communicating with the ventilation hole Are provided laterally along the floor of the overhang portion between the face materials attached to the interior and the exterior ranging from the back trunk difference to the front trunk difference forming the overhang portion, and a vent hole communicating with the vent passage is provided. Provided in the front trunk difference that forms the overhang part, the ventilation path communicating with the ventilation path is vertically extended along the wall of the overhang part between the face materials attached to the interior and the exterior from the front trunk difference to the eaves girder. Of buildings characterized by being provided in the direction Exhaust device.   Insulation is provided inside the building in the ventilation path provided on the wall of the lower floor and the wall of the overhang part, and insulation is provided on the inside of the building in the ventilation path provided on the floor of the overhang part. The ventilation apparatus for buildings according to claim 3, wherein a material is disposed, and ventilation holes provided in the front trunk difference and the rear trunk difference are formed in a substantially L-shaped cross section or a substantially oblique cross section.   In a building of a wooden construction in which an exit corner and an entrance corner are formed in a planar form, and an air passage is provided in a vertical direction along a wall adjacent to the exit corner and the entrance corner, the air passage is the wall Are formed between the face materials attached between the pillars supporting the interior and the exterior, the pillars in the protruding corner part, the entering corner part, and the ventilation path and the interstitial pillar or the feather pattern material provided between the pillars. A ventilation device for a building, which is provided with a communicating vent hole, and is capable of venting between walls adjacent to each other in the lateral direction from the vent passage through the vent hole.   The ventilation apparatus for buildings according to claim 5, wherein the protruding corner portion and the entering corner portion are formed at least in any one of a roof balcony portion, an overhang portion, and a space around the soil.

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