JPS6339284Y2 - - 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 area, that is, the attic space 4 of the lower building 3, the ventilation openings provided in the first floor eaves 5 are usually used. This is done through 6. However, the humid air in the attic space 4 is warmed by the heat from the first floor interior 8 through the first floor ceiling 7 and becomes an upward airflow, which stays in the corner space of the lower house 3 and wall 9 and is almost exhausted from the ventilation opening. 6 to the outdoors 10, and the accumulated air 11 is cooled by the cold air of the outdoors 10 while it remains.
There has been a problem of condensation 12 forming on the attic surface of the shed 3. Therefore, the purpose of this invention is to provide a shed ventilation system 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 drain plate support piece 18c similarly inclined downward from the upper edge, and further has a downwardly inclined piece 18c protruding from the upper edge of the vertical piece 18a. A ventilation opening 19 is formed. Also, this ventilation port 19
A downwardly inclined piece 18d is provided protruding from the outdoor surface of the vertical piece 18a below the vertical piece 18a, so that both downwardly inclined pieces 1
A roof tile insertion groove 20 is formed between 8b and 18d, and a downwardly inclined piece 18d and a drain plate support piece 18C
A ventilation path S is formed between them. Furthermore, downward slope piece 1
A water section 18e that is inclined upward toward the outdoors is provided on top of the water section 8d. The installation of this ventilation member 18 is as follows:
This is done by placing and fixing the downwardly inclined piece 18b on the upper edge of the upper surface of the shedding board 15.

On the other hand, a tile crosspiece 21 is fixed on the roofing board 15 and the upper part of the roof tile 22 is hooked thereon, and above the roofing board 15, the roof tile insertion groove 2
In addition to placing roofing soil 23 inside 0, roof tiles 24
The upper edge is pushed into the roofing soil 23 and its lower edge is locked to the upper edge of the lower roof tile 22, and a tie 25 is placed between the center of the upper surface of the roof tile 24 and the tip of the lower surface of the downwardly inclined piece 18d. do.

Further, the horizontal piece 26a of the draining plate 26 is fixed along the draining plate support piece 18c of the ventilation member 18 in a state in which it is tilted downward toward the outdoor side, and the vertical piece 26b
A ventilation slit 27 is formed between the downwardly inclined piece 18d on the outdoor side, and a flange 26c protruding from the tip of the vertical piece 26b toward the outdoors is placed above the roof tile 24 at a certain distance. Further, a mounting piece 26d protruding upward from the tip of the horizontal piece 26a is placed along the outer wall 13, and its upper end is attached to the outer wall 1 with a nail 29 via the base crosspiece 28.
Fixed to 3. Furthermore, an inverted L-shaped draining board 30 is arranged from the upper surface of the base crosspiece 28 to the outdoor surface, and the nails 31 are installed.
The drain plate 30 is fixed to the outer wall 13 with a caulking material 32 to make the joint between the horizontal piece of the draining plate 30 and the outer wall 13 waterproof.

As a result of this configuration, the attic space 17 in the lower house portion is communicated with the outdoors 33 via the ventilation slit 16, the ventilation opening 19, the ventilation path S, and the ventilation slit 27, so that the attic space 17 can be ventilated. I can do it. Moreover, since the ventilation slits 16, the ventilation member 18, and the draining board 26 are provided at the top of the attic space 17, the air in the attic space 17, which has become an upward air current due to the indoor heat on the first floor,
Ventilation slit 16→ventilation opening 19→ventilation path S→ventilation slit 27 to smoothly exhaust the air to the outdoors 33, efficiently ventilating the attic, and preventing moisture-containing air from staying in the attic space 17. It is possible to prevent condensation from forming on the attic surface of 15 etc.
Moreover, even if rain and wind blow on the ventilation member 18 from the eaves side, the vertical piece 2 of the draining board 26 is placed on the outdoor side of the ventilation path S.
6b, it is difficult for rainwater to cross over the ventilation slit 27 from the outdoor area 33 and infiltrate into the ventilation path S, and even if it does infiltrate, the backflow is prevented by the water section 18e on the downwardly sloping piece 18d, so that ventilation is prevented. It does not enter the attic space 17 through the opening 19, and therefore has excellent rain protection performance. In addition,
Rainwater flowing down the outdoor surface of the outer wall 13 is drained from the drainage plate 30.
The water flows through the drainage board 26, over the roof tiles 24 and 22, and is drained toward the eaves.

As described above, the shed ventilation system of this invention consists of an outer wall and a rafter projecting downward from the outer wall surface.
A sheathing board mounted on the rafters and forming a ventilation slit between its upper edge and the outer wall surface, and a vertical piece fixed along the upper edge of the shedding board and having a ventilation hole at the top. , between a drain plate support piece extending downward from the upper end of the vertical piece on the side opposite to the outer wall, and a drain plate support piece protruding from the outer surface of the vertical piece below the ventilation opening; A ventilation member consisting of a downwardly sloping piece that forms a ventilation path and a roof tile insertion groove between it and the sheathing board, and a roof that is laid on the sheathing board with its upper end edge inserted into the roof tile insertion groove. The roof tile and the horizontal piece are placed on the draining board supporting piece in a state where the horizontal piece is tilted downward toward the outdoor side, and the tip of the horizontal piece is fixed to the outer wall surface, and the vertical piece is placed at an interval on the outdoor side of the downwardly inclined piece. A substantially inverted L in which the ventilation path is communicated with the outdoors by being installed at the top of the roof and arranging the ends of the vertical pieces at a distance above the roof tiles.
Since it is equipped with a shaped drainage board, it has the effect of efficiently ventilating the attic and also has excellent rain protection performance.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional example, FIG. 2 is a sectional view for explaining its drawbacks, and FIG. 3 is a sectional view of an embodiment of this invention. 13...Outer wall, 14...Rafters, 15...Shellboard, 16...Ventilation slits, 18...Ventilation members,
18a... Vertical piece, 18C... Draining plate support piece, 1
8d...Downward sloping piece, 19...Ventilation opening, 20...
...Roof tile insertion groove, 24...Roof tile, 26...Draining board, 26a...Horizontal piece, 26b...Vertical piece, S...Ventilation channel.

Claims (1)

[Scope of utility model registration request] An exterior wall, a rafter projecting downward from the exterior wall surface, a sheathing board mounted on the rafter to form a ventilation slit between its upper edge and the exterior wall surface, and the upper edge of said sheathing board. a vertical piece that is fixed along the vertical axis and has a ventilation hole at the top; a drain plate support piece that extends downward from the upper end of the vertical piece on the opposite side of the outer wall; and a vertical piece that is below the ventilation hole. a ventilation member formed of a downwardly sloping piece protruding from the outer surface of the roof and forming a ventilation path between the support piece of the draining plate and a roof tile insertion groove between the roof plate and the roof plate; The roof tile is inserted into the tile insertion groove and laid on the roofing board, and the horizontal piece is placed on the drain plate support piece with the horizontal piece tilted downward toward the outdoor side, and the tip of the horizontal piece is fixed to the external wall surface. At the same time, the vertical pieces are provided at intervals on the outdoor side of the downwardly sloping piece, and the tips of the vertical pieces are arranged at a distance above the roof tile, thereby providing a substantially inverted L-shaped drainage plate that connects the ventilation path to the outdoors. Lower house ventilation system with.