JP5424040B2 - Attic ventilation structure - Google Patents

Description

  The present invention relates to a hut ventilation structure of a building having a land roof.

  Condensation may occur in the attic in a building having a flat roof when moisture containing air flows in and stays at a low temperature in the attic. Therefore, it is necessary to provide a shed ventilation structure in the shed to suppress the occurrence of condensation.

  For example, Patent Document 1 provides a ventilation path between the back of the hut and a hollow portion in the parapet provided on the land roof by providing a hole for ventilation in the beam in the back of the hut. A roof back ventilation structure is disclosed in which ventilation of the back of the hut is possible by forming a ventilation path that communicates the hollow portion and the outside of the building between the exterior material of the parapet and the head of the parapet. .

JP 2008-285914 A

  However, the attic ventilation structure disclosed in Patent Document 1 causes a decrease in waterproofness of the building. This is because rainwater enters the hollow portion through a ventilation path connecting the hollow portion and the outside of the building. In addition, the shed ventilation structure has a ventilation hole in the beam, but the hole in the shed beam has a disadvantage in terms of structure, and there is a degree of freedom in planning to compensate for it. There also arises a problem that it decreases. This problem is particularly apparent in the case of wooden buildings.

  The present invention has been made for the purpose of solving the above-mentioned problems, and in a building having a flat roof, it can realize a high waterproof property and does not require a hole in the beam to be opened. The purpose is to provide.

In order to achieve the above object, a roof athletic structure according to claim 1 is a building comprising a land roof, a hollow parapet raised at the outer periphery of the land roof, and a roof at the bottom of the land roof. In the hut ventilation structure, the air in the shed is introduced into the inside of the parapet through the communication portion and discharged to the outside from the upper end of the parapet, and the parapet is erected in parallel. A hollow portion whose upper end is sealed between two base plates, and an exterior material is fixed to the outside of at least one base plate by opening a ventilation gap from the base plate. wherein and vent for communicating the ventilation gap is provided, the vent portion is formed to stand up to the end of at least the hollow portion, rainwater that has entered the said ventilation gap from entering the hollow portion Draining, characterized in that is provided to prevent.

Further, in the cabin ventilation structure according to claim 2, the communication portion is provided on the top surface of the cabin back so as to open to a portion that abuts on a beam installed at a lower end of the parapet and to the cabin back. It is a notch.

Further, in the hut ventilation structure according to claim 3, the shed includes a shed beam that supports the flat roof, and the shed beam used for air circulation in the shed is provided on a top surface of the shed. A notch is provided to straddle the portion that abuts the contact.

  In the attic ventilation structure according to claim 1, the parapet has a hollow portion whose upper end is sealed between two base plates, and a ventilation gap between the base plate and the exterior material, The base plate is provided with a ventilation portion that communicates the hollow portion with the ventilation gap. Thereby, in this shed back ventilation structure, the air in the shed is exhausted from the upper end of the parapet to the outside through the communication portion, the hollow portion, and the ventilation gap. For this reason, since the shed ventilation structure does not allow rainwater to directly enter the hollow portion from the outside, the rainwater can be prevented from entering the hollow portion, thereby improving the waterproofness of the building to which it is applied. it can.

  Furthermore, in the attic ventilation structure according to claim 1, rainwater that has risen at the end of the ventilation portion on the hollow portion side and formed in the ventilation portion has entered the ventilation gap. Since it can prevent intrusion, it exhibits higher waterproofness.

In the cabin back ventilation structure according to claim 2 , the communication portion is formed on a top surface of the cabin back by a portion that abuts on a beam installed at a lower end of the parapet and a notch provided in the cabin back. Therefore, the back of the hut can be ventilated without making a hole in the beam.

The attic ventilation structure according to請Motomeko 3, the top surface of the attic, by providing a notch across the tie beam abutting portion, above the該小Ya beam, it is possible to ensure ventilation path . Thereby, in this shed back ventilation structure, the whole said shed can be uniformly ventilated irrespective of the beam back of the said shed beam.

Sectional drawing of the building in which the hut ventilation structure of embodiment of this invention was applied. The enlarged front view of the parapet base which omitted external cosmetics and glares. The expansion perspective view of a drainer. The enlarged plan view of the floor plywood which omitted the floor finishing material. Sectional drawing of the building to which the roof back ventilation structure of other embodiment of this invention was applied. The expansion perspective view of the drainer of other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the shed ventilation structure 1 of the present invention includes a flat roof 2, a hollow parapet 3 raised at the outer periphery thereof, and a hut 4 provided at the bottom of the flat roof 2. The air in the back of the hut 4 is introduced into the inside of the parapet 3 through the notches (communication portions) 6 and 7 and is discharged from the upper end of the parapet 3 to the outside. In addition, in this Embodiment, although the building 5 is shown as a wooden construction, even if it is a reinforced concrete construction, a steel frame construction, a framed wall construction, etc., it is possible to apply the attic ventilation structure 1.

  The flat roof 2 includes a flat floor plywood 8 which is also a top surface of the hut back 4 and a floor finishing material 10 having a waterproof property laid on the outdoor 9 side surface of the floor plywood 8. The parapet 3 is provided with a waterproof sheet (not shown) attached to the surface of the outdoor 9 side, a drainer 11 is attached, and a flat plate-shaped base siding (base plate) erected from the side of the end of the floor finish 10 ) 12 and a flat-shaped parapet base (base plate) 13 standing in parallel with the rising base siding 12. A hollow portion 14 is formed between the raised base siding 12 and the parapet base 13 in a state of being sealed by the base wood 15 at the upper end thereof.

  Further, the parapet 3 is provided with a plate-shaped exterior material 17 that is an outer wall of the building 5 outside the parapet base 13 with a ventilation gap 16 opened from the parapet base 13. In the parapet base 13, a gallery (vent part) 18 that communicates the hollow portion 14 and the ventilation gap 16 is formed in a plurality of through holes 19 (see FIG. 2) that are formed in the parapet base 13 in the transverse direction at predetermined intervals. In each case, rainwater that has entered the ventilation gap 16 from the outdoor 9 into the ventilation gap 16 is disposed with a waterproof cover 20 that prevents the rainwater from entering the hollow portion 14. The gallery 18 is provided with a drainer 18 a that is formed so as to rise from an end portion on the hollow portion 14 side and prevents rainwater that has entered the ventilation gap 16 from the outdoors 9 from entering the hollow portion 14. Further, a substantially U-shaped drainer 22 (see FIG. 3) in a side view provided with a through hole 21 that communicates with the outdoor 9 and the ventilation gap 16 is attached to the upper end of the parapet 3. Further, a substantially U-shaped headboard 23 in a side view is disposed above. Further, at the lower end of the parapet 3, the parapet base 13 contacts one side surface, the other side surface contacts the floor plywood 8, and a lower frame member 24 is disposed.

  The back of the hut 4 has a floor plywood 8 and a lower frame member 24 as a top surface, and a gypsum board 25 as a floor surface. In the shed 4, a beam 30 that supports the floor plywood 8 and the lower frame member 24 and fixes the parapet base 13 is installed on the lower end of the parapet 3. In the beam 30, a slit 29 used as a ventilation path between the interior space 28 and the back of the hut 4 or the hollow portion 14 divided by the room 26 and the wall surface 27 of the building 5 is provided on the side surface and the upper surface of the parapet base 13. Is provided. Further, in the shed 4, there is a shed beam 32 on which the upper surface is placed with the floor plywood 8, and the other end of the reinforcing support fixing member 31 whose one end is supported by the beam 25 a is fixed to the side surface. Further, a heat insulating material 33 having a bulk to abut against the beam 30 and the hut beam 32 is laid on the beam 25a.

  Here, as shown in FIG. 4, in the floor plywood 8 and the lower frame member 24, notches 6 and 7 communicating the back of the shed 4 and the hollow portion 14 have a predetermined interval at a portion in contact with the beam 30. Are provided. In addition, the notch 6 provided in the floor plywood 8 is provided so as to open to the part that is placed on and contacted with the beam 30 and the back of the hut 4. Further, the locations where the notches 6 and 7 are formed are the ends of the floor plywood 8 and the lower frame member 24, respectively, so that the notches 6 and 7 are formed from the ends of the floor plywood 8 and the lower frame member 24, respectively. It can be formed only by simple processing. Further, the shapes of the notches 6 and 7 are not limited to the square holes illustrated in FIG. 4, and may be a slit shape or the like, and can be any shape that can be easily processed.

  In addition, the floor plywood 8 has a plurality of pieces with a predetermined interval as shown in FIG. Notches 34 and 35 are provided. By providing the notches 34 and 35 as described above, a ventilation path is secured above the shed beam 32, so that the shed beam shielded by the shed beam 32 and the heat insulating material 33 in the shed 4. The ventilation between the space on the right side surface of 32 and the space on the left side surface of the roof beam 32 is possible. In addition, two floor plywoods 8a and 8b are connected and arranged in a place where the notches 34 and 35 are formed, that is, above the shed beam 32. Therefore, since the notches 34 and 35 are formed at the end portions of the respective floor plywoods 8a and 8b, they can be formed by the same simple process as the notches 6 and 7.

  Based on the above, in the shed ventilation structure 1, the shed 4, the parapet base 13, and the parapet base 13 are erected by the floor plywood 8 that contacts the beam 30 in the shed 4 and the notches 6 and 7 provided in the lower frame member 24. The hollow portion 14 is communicated with the raised base siding 12. The hollow portion 14 is sealed at its upper end by a base wood 15, and the hollow portion 14 and the ventilation gap 16 between the parapet base 13 and the exterior material 17 are communicated with each other by a gallery 18 disposed on the parapet base 13. ing. Further, the ventilation gap 16 is communicated with the outdoors 9 through the inside of the headboard 23 by a through hole 21 provided in a drainer 22 disposed at the upper end of the parapet 3. As described above, the cabin ventilation structure 1 causes the air in the cabin 4 to pass through the notches 6 and 7, flow into the hollow portion 14, and to the ventilation gap 16 through the louver 18, and from the upper end of the parapet 3. It flows out to the outside through the through hole 21. For this reason, since the shed ventilation structure 1 does not allow rainwater to directly enter the hollow portion 14 from the outdoor 9, rainwater can be prevented from entering the hollow portion 14, and thus the waterproof property of the building 5 to be applied can be reduced. Can be increased.

  Further, the hut ventilation structure 1 has a drainer 18a formed at the end of the hollow portion 14 on the louver 18 so that rainwater that has entered the ventilation gap 16 from the outdoors 9 can be seen in the hollow portion 14. Since it can prevent intrusion into the water, it exhibits higher waterproofness. Moreover, since it is not necessary to make a hole in the beam 30, it can be applied to the building 5 without causing a disadvantage in terms of structure, thereby improving the degree of planning freedom of the building 5. This effect is particularly prominent when the building 5 is made of wood. Moreover, in the hut ventilation structure 1, since it is not necessary to install the gallery which connects the outdoor 9 and the inside of the building 5 to the exterior material 17, the design property of the building 5 is improved. Furthermore, this also exhibits the effect of improving the waterproofness of the building 5.

  Further, in the attic ventilation structure 1, the entire attic 4 can be uniformly ventilated because the entire attic 4 can be ventilated by using the entire area of the parapet 3 raised at the outer peripheral edge of the flat roof 2. it can. Further, in the roof back ventilation structure 1, the notches 34 and 35 are provided at the joint of the floor plywood 8 placed on the roof beam 32, so that the roof beam 32 and the heat insulating material 33 are provided in the roof back 4. It is possible to ventilate the space on the left and right side surfaces of the hut beam 32 that is shielded by. That is, the hut ventilation structure 1 can uniformly ventilate the entire hut 5 regardless of the beam back of the hut beam 32 and the bulk of the heat insulating material 33. Variations of the material 33 can be increased, which also improves the structural and planning flexibility of the building 5.

  Next, based on FIGS. 5 and 6, a shed ventilation structure 41 according to another embodiment of the present invention will be described. The attic ventilation structure 41 is different from the attic ventilation structure 1 in that it is applied to a building 43 having a land roof 42 used as a roof balcony, but the same configuration as the attic ventilation structure 1 is the same. Reference numerals are assigned and description is omitted. Moreover, in this Embodiment, although the building 43 is shown as a wooden building, even if it is a reinforced concrete building, a steel frame building, a framed wall construction, etc., the hut ventilation structure 41 can be applied.

  The land roof 42 is provided with a land box pit 44 for collecting and discharging rainwater. Along with this, along the outer periphery of the flat floor plywood 45, a flat strip 46 and a floor plywood 47 are also provided. Further, a floor finishing material 48 a having waterproof properties is laid on the surface of the floor plywood 45 and the strip plate 46 on the outdoor 9 side. In addition, the floor plywoods 45 and 47 and the strip 46 are the top surface of the hut back 48 together with the lower frame member 24.

  The parapet 49 is a hollow one raised on the outer peripheral edge of the land roof 42, and includes a flat-shaped parapet base (base plate) 50 connected above the start base siding 12. The parapet base 13 and the parapet base 50 are erected in parallel, and the hollow portion 51 formed therebetween is sealed by the parapet base 52 above the parapet base 13. Further, the parapet 49 is provided with an exterior material 54 outside the parapet base 50 with a ventilation gap 53 opened from the parapet base 50. The parapet base 50 is provided with a gallery 18 that communicates the hollow portion 51 and the ventilation gap 53 with a plurality of through holes provided in the lateral direction in the parapet base 50 at predetermined intervals from the periphery of the gallery 18 to the outside. 9 is provided with a waterproof cover 20 that prevents rainwater that has entered the ventilation gap 53 from entering the hollow portion 51. At the upper end of the parapet 49, a drainer 22a (see FIG. 6) provided with a through hole 21a communicating with the outdoor 9 and the ventilation gap 53 is attached, and a headboard 23 is disposed further above. Yes. Further, a lower frame member 24 is disposed at the lower end of the parapet 49 so that the parapet base 13 abuts one side surface.

  The hut back 48 has the lower frame member 24, the floor plywoods 45 and 47, and the strip plate 46 as the top surface. In addition to the beams 30 and the shed beams 32, the upper surface is the shed beam 55 on which the floor plywood 45 and the strip plate 46 are placed. Is built. On the lower frame member 24 and the floor plywood 47, notches (communication portions) 7 and 57 that connect the back of the hut 48 and the hollow portion 51 via the space 56 below the land box pit 44 are placed on the beam 30. A plurality are provided with a predetermined interval so as to open to the contacting portion and the shed 48. Further, the floor plywood 45 is provided with a plurality of notches 58 and 59 similar to the notches 34 and 35 so that both ends of the floor plywood 45 are placed on and contacted with the shed beam 32 and the both ends open to the shed 48. It has been. In addition, the floor plywood 45a and 45b are continuously arranged in the place where the notches 58 and 59 are formed, that is, above the hut beam 32. Further, the floor plywood 45 and the band plate 46 are provided with a plurality of cutouts similar to the cutouts 34 and 35 such that both ends of the floor plywood 45 and the band board 46 are placed on and contacted with the shed beam 55 and open to the shed 48. 60 and 61 are provided. By providing the notches 60 and 61, a ventilation path is secured above the roof beam 55, so that the right side surface of the roof beam 55 that is shielded by the roof beam 55 and the heat insulating material 33 in the back of the roof 4. Ventilation between the space on the side and the space on the left side of the roof beam 55 is possible. The notches 57, 58, 59, 60, 61 are formed at the ends of the floor plywood 45 a, 45 b, 47 and the strip 46, respectively, and can be formed by simple processing as with the notch 7. .

  Based on the above, in the shed back ventilation structure 41, the shed 48 and the parapet bases 13, 50 are formed by the notches 7, 57 provided in the lower frame member 24 and the floor plywood 47 that contact the beam 30 in the shed 48. The hollow part 51 in between is communicated. The hollow portion 51 is sealed at its upper end by a parapet base 52, and the hollow portion 51 and the ventilation gap 53 between the parapet base 50 and the exterior material 54 are communicated with each other by a gallery 18 disposed on the parapet base 50. ing. Further, the ventilation gap 53 is communicated with the outdoor 9 through the headboard 23 through a through hole 21 a provided in the drainer 22 a disposed at the upper end of the parapet 3. Further, the shed ventilation structure 41 is provided with notches 56, 57, 58, and 59 in the floor plywood 45 and the strip 46 that are in contact with the shed beams 32 and 55. The ventilation between the space on the right side of the roof beam 32 and the space on the left side of the roof beam 32 that is shielded by the roof beam 32 and the heat insulating material 33, and the shielding by the roof beam 55 and the heat insulating material 33. The ventilation between the space on the right side surface of the shed beam 55 and the space on the left side surface of the shed beam 55 is enabled. As described above, the attic ventilation structure 41 exhibits the same effect as the attic ventilation structure 1.

  The attic ventilation structures 1 and 41 shown in the present embodiment are only one aspect of the attic ventilation structure according to the present invention, and various modifications can be made without departing from the scope of the present invention. is there.

  The attic ventilation structure according to the present invention can be applied to a building having a flat roof.

1 Hut ventilation structure 2 Flat roof 3 Parapet 4 Hut back 5 Buildings 6 and 7 Notch 12 Rising base siding (base plate)
13 Parapet base (base plate)
14 Hollow part 16 Ventilation gap 17 Exterior material 18

Claims (3)

In a building comprising a flat roof, a hollow parapet raised on the outer peripheral edge of the flat roof, and a hut back provided at the lower part of the flat roof, the air inside the shed is connected to the inside of the parapet via a communication portion. A hut ventilating structure that is introduced into and discharged to the outside from the upper end of the parapet,
The parapet has a hollow portion whose upper end is sealed between two base plates standing in parallel, and an exterior material is fixed to the outside of at least one base plate by opening a ventilation gap from the base plate. The one base plate is provided with a ventilation portion that communicates the hollow portion and the ventilation gap,
The ventilating structure is provided with a drainage drainage structure that is formed so as to rise at least at the end on the hollow portion side and prevents rainwater that has entered the ventilation gap from entering the hollow portion. . The communication unit, the top surface of the attic, in claim 1, wherein a notch is provided open to the beams and portions and the attic abutting that is bridged at the lower end of the parapet The attic ventilation structure described. The back of the shed comprises a shed beam that supports the flat roof,
The roof of the shed according to claim 1 or 2 , wherein a notch is provided on a top surface of the shed to straddle a portion that contacts the shed beam used for air circulation in the shed. Ventilation structure.

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