JPS6317764Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a ventilation system for a lower building.

As shown in Figures 1 and 2, a two-story building 1
In the case of a building whose floor area is set smaller than that of the first floor building 2, when ventilating the first floor roof part, that is, the attic space 4 of the lower building 3, the ventilation opening 6 provided in the first floor eaves 5 is usually used. This is done through. However, the humid air in the attic space 4 reaches the ceiling 7 on the first floor.
The air is warmed by the heat from the interior 8 on the first floor and becomes an updraft, which stays in the corner space of the lower building 3 and wall 9 and is hardly exhausted from the ventilation opening 6 to the outside 10. Moreover, the stagnant air 11 is cooled by the cold air outside 10 while it is staying there, so there is a problem in that dew condensation 12 is formed on the underside of the attic of the shed 3.

Therefore, the purpose of this invention is to provide a ventilation system for an attic that can efficiently ventilate the attic.

An embodiment of this invention will be described with reference to FIG. That is, as shown in the figure, in this shed ventilation system, a rafter 14 is provided to protrude downward from the outdoor surface of an outer wall 13 formed of panels, and a field board 15 is mounted on the rafter 14. The shedding board 15 has its upper end edge separated from the outer wall 13 to form a ventilation slit 16 between it and the outer wall surface, and communicates with an attic space 17 (lower part of the roof) below the shedding board 15.

Further, a ventilation member 18 is installed on the field board 15. This ventilation member 18 has a downwardly inclined piece 18b protruding from the lower edge of the vertical piece 18a toward the outdoor side, and a roof tile locking piece 18c having an L-shaped cross section protrudes from the lower part of the outdoor surface of the vertical piece 18a. Further vertical piece 18
A first ventilation opening 19 is formed in the upper part of a. Further, a horizontal piece 18d is connected to the upper end of the vertical piece 18a, and a hanging piece 18e is provided protruding from the tip of the horizontal piece 18d.
form. The installation is carried out by placing and fixing the downwardly inclined piece 18b on the upper edge of the upper surface of the roof board 15, and fixing the base end of the horizontal piece 18d to the outer wall 13.

On the other hand, the upper edge of the roof tile 21 is connected to the ventilation member 1.
At the same time, the lower end edge of the roof tile locking piece 18c of the ventilation member 18 is placed on the shedding board 15, and the lower end edge of the hanging piece 18e of the ventilation member 18 is brought into contact with the upper surface of the roof tile locking piece 18c. Furthermore, two tiles 23 are stacked on the upper surface of the horizontal piece 18d of the ventilation member 18 with the roofing soil 22 interposed therebetween. Furthermore, draining board base materials 24 and 25 are laid on the top tiles 23, and a draining board 26 is placed between the outer wall 13 and the upper surface of the top tiles 23 and fixed to the outer wall 13 with nails 26a. In addition, the draining board 26 and the outer wall 13
The joints are waterproofed using caulking material 27.

As a result of this configuration, the attic space 17 of the lower house part has the ventilation slit 16 and the first ventilation opening 1.
9. Since the attic space 17 is communicated with the outdoors 28 through the second ventilation opening 20, the attic space 17 can be ventilated. In addition, since the ventilation slit 16 and the ventilation member 18 are provided at the top of the attic space 17, the air in the attic space 17, which has become an upward airflow due to the indoor heat on the first floor, flows through the ventilation slit 16.
→ The first ventilation opening 19 → The second ventilation opening 20 is smoothly exhausted to the outdoors 28, and attic ventilation is performed efficiently. Air containing moisture does not stay in the attic space 17, so the roof board 15 It is possible to prevent condensation from forming on the attic surface. Moreover, even if rain and wind blow onto the ventilation member 18 from the eaves side, it is difficult for the rainwater to pass through the ventilation opening 20 due to the action of the cut and raised pieces 18f of the ventilation member 18, and even if it does pass, there is a vertical piece 18a inward. , there is no possibility of intrusion beyond the ventilation opening 19 into the attic space 17.
In addition, rainwater that has entered through the ventilation opening 20 will be removed from the roof tiles 2
1 and flows downward, passing between the tip of the hanging piece 18e and the upper surface of the roof tile 21, and being drained toward the eaves side.

In the above embodiment, the upper edge of the roof tile 21 is locked to the roof tile locking piece 18c of the ventilation member 18, but the roof tile locking piece 18c is not necessarily necessary. Alternatively, a base crosspiece 29 may be installed horizontally on the shedding board 15, and the upper edge of the roof tile 21 may be suspended thereon.

Further, in the above embodiment, the roofing soil 22, the roof tiles 23, the draining board 26, etc. are installed on the horizontal piece 18d of the ventilation member 18, and watertight treatment is achieved at the joint between the horizontal piece 18d and the outer wall 13. However, the watertight treatment means is not particularly limited. For example, as shown in FIG. 4, the drain plate 30 is extended from the outdoor surface of the outer wall 13 to the tip of the horizontal piece 18d of the ventilation member 18',
A base material 31 is arranged on the outdoor side near the upper end of the draining board 30 and fixed to the outer wall 13 with nails 32, and the tip 30a of the draining board 30 is wound around the outdoor side of the base material 31 and fixed with nails 33. The draining board 3
A caulking material 34 may be provided at the joint between the outer wall 13 and the outer wall 13.

As described above, the shed ventilation system of this invention consists of an outer wall, a rafter projecting downward from the outer wall surface, and a structure mounted on the rafter to provide ventilation between the upper edge of the roof and the outer wall surface. A field board with slits formed therein, a vertical piece erected along the upper edge of the field board to form a first ventilation opening above the field board, and a horizontal piece connected to the upper end of the vertical piece to form a first ventilation opening. The proximal end portion is fixed to the outer wall surface, the distal end portion is arranged outdoors relative to the vertical piece, and a hanging piece is provided protruding from the distal end of the horizontal piece, and a second ventilation opening is formed in the hanging piece. a roof tile that is installed on the roof board with its upper edge disposed in front of the lower part of the vertical piece so that the lower edge of the hanging piece is in contact with its upper surface; and the horizontal piece. Since the watertight means is provided by watertightly treating the joint between the base end of the roof and the outer wall, the attic can be ventilated efficiently and has excellent rain protection performance.

[Brief explanation of drawings]

Fig. 1 is a plan view of the conventional example, Fig. 2 is a sectional view for explaining its drawbacks, Fig. 3 is a sectional view of one embodiment of this invention, and Fig. 4 is a sectional view of another embodiment. be. 13...Outer wall, 14...Rafters, 15...Shellboard, 16...Ventilation slits, 18...Ventilation members,
18a...Vertical piece, 18d...Horizontal piece, 18e...
... hanging piece, 19... first ventilation opening, 20... second
ventilation opening, 21... roof tile, 23... roof tile (watertight means), 26... draining board (watertight means).

Claims (1)

[Scope of utility model registration request] An exterior wall, a rafter projecting downward from the exterior wall surface, a sheathing board placed on the rafter to form a ventilation slit between its upper edge and the exterior wall surface, and the upper edge of this sheathing board. A vertical piece is erected along the vertical line to form a first ventilation hole in the upper part thereof, and a horizontal piece is connected to the upper end of the vertical piece to fix its base end to the outer wall surface, and its distal end is fixed to the outer wall surface. a ventilation member disposed on the outdoor side of the vertical piece, further having a hanging piece protruding from the tip of the horizontal piece and forming a second ventilation opening in the hanging piece; The roof tile was installed on the roofing board in the arranged state, and the lower edge of the hanging piece was brought into contact with its upper surface, and the joint between the base end of the horizontal piece and the outer wall was watertightly treated. Underground ventilation system with watertight means.