JPH0213616Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a ventilation structure in the attic of a snow-proof roof installed in a cold region with a large amount of snowfall.

In areas with a lot of snow, it is necessary to remove snow to prevent houses from collapsing due to the snow that accumulates on the roofs, but in addition to being hard work, removing snow is also difficult as housing has become denser in recent years, and the site area has become smaller. In small situations, there is no place to store the snow, and transporting it with snow removal equipment is expensive. Furthermore, if snow is left on the roof, snow and icicles may fall unexpectedly, which is very dangerous for passersby.

Against this background, recently, as shown in Fig. 1, the roofs 1, 1 are tilted downward toward the inside of the house 2 to form an internal slope, and the entire roof is configured to have an approximately M-shaped cross section. , Non-snow roofs that prevent snow from falling around the house 2 by attaching a horizontal gutter 3 to the part where the roofs 1 and 1 meet and melting snow near the horizontal gutter 3 are becoming more and more popular. be.

It has been found that although the snow-shedding roof of the above structure has solved the above-mentioned drawbacks, new problems as described below arise.

In other words, the warm air that escapes directly from the living room to the attic (the warm air that rises to the ceiling in the living room escapes to the attic even through a small gap in the ceiling due to the static pressure applied to the ceiling), and the temperature of the living room. The temperature of the hot air from the ceiling material warmed by This is a problem of condensation caused by contact and rapid cooling. In particular, in the above-mentioned snow-free roof, hot air and warm air tend to accumulate in the ridges on both sides, and condensation can cause corrosion of the metal materials and combing of the wood in the ridges.

Conventionally, in order to solve the above problem, the above-mentioned snow-shedding roof has been improved by increasing the airtightness of the ceiling or by providing a heat insulating layer in at least one of the attic and the attic. One of the insulation layers had absorbed moisture and its performance had deteriorated, and it was still impossible to prevent condensation.

In addition, as shown in Fig. 2, in a snow-proof roof configured to provide ventilation through the eaves by forming ventilation holes 6 in the eaves of the roofs 1 and 1, warm air and hot air accumulated in the above-mentioned ridges are expelled. It was difficult to do so, and the heat insulating layer sometimes acted as resistance and inhibited the performance of eave ventilation.

This idea was developed based on the above background, and by providing ventilation holes along the outside of the ridge, it is possible to prevent warm air from accumulating at the back of the ridge.
This completely prevents condensation inside the attic.

This invention will be explained below with reference to the drawings.

FIGS. 3 and 4 show an embodiment of this invention, and symbol A in the figures indicates plate-shaped roof bodies 10, 10.
is inclined downward toward the inside of the house 12, and a horizontal gutter 11 is provided at the part where the roof bodies 10, 10 abut, and the roof body 1 on the outer wall side of the house 12 is provided with a horizontal gutter 11.
This is a non-snow roof with a substantially M-shaped cross section, with steeply sloped roof sub-members 13, 13 attached to the ends of the roof 0, 10, and ridges 14, 14 formed on the outer wall side of the house 12.

The roof main body 10 has a plurality of core materials 15 assembled in a lattice shape, and a roof plate 16 is placed on the upper surface of these core materials 15.
At the same time, the roof board 16 is covered with the roof member 10A, and the core material 15 located in the ridge part 14 is supported by the shed panel 17.

The roof subbody 13 has the upper end 18a of the rafter 18 abutted against the end of the core material 15 located in the ridge 14, and the upper end 19a is located above the end 16a of the roof board 16 on the ridge 14 side. A roof plate 19 is stretched over the upper surface of the rafters 18 so as to protrude from the rafters 18, and most of the upper surface of the roof plate 19 is covered with a roofing material 20.

The upper end portion 19a of the roof plate 19
A ventilation hole 21 that opens to the attic B and the outdoor area C is formed nearby and laterally to the core material 15, and this ventilation hole 21 is formed on the outer surface of the roof plate 19 above and below the outdoor area C side of this ventilation hole 21. Long plate-shaped receiving materials 22, 22 are installed horizontally along the outer surface, while on the upper surface of the receiving materials 22, 22, the receiving materials 22, 22 are spaced apart by a predetermined distance and their lengths are oriented vertically along the roof plate 19. Takasagi 23... are attached along the length direction of the receiving materials 22, 22. Further, a tree support 24 is attached to the upper surface of the roof plate 16 of the ridge portion 14,
The receiver 24 and the board 1 are attached to the receiver 24 and the cap 23.
A ridge cover member 26 that covers the upper end 19a of the roof plate 19, the support material 22, and the cap 23 and opens the exhaust port 25 between the lower end 23a of the cap 23 and the roof plate 19 is attached by fixing means such as nailing. ing. The upper end of the roofing material 20 is fixed to one side of the receiving material 22 by passing through the exhaust port 25, and a water return 27 is formed at the portion where the upper end of the roofing material 20 is fixed to the receiving material 22.

In addition, below the roof sub-body 13, an air intake hole 28 is formed and eave ceiling members 29 are stretched. On the other hand, ventilation holes 30 are formed in the small wall panel 17. Further, what is indicated by the reference numeral 31 in FIG. 5 is a heat insulating material such as glass wool.

Next, the operation of this device configured as described above will be explained.

When the wind blows against the house 2, the air under the eave ceiling material 29 enters the attic B through the intake hole 28, rises as it is, and passes through the ventilation hole 21 of the ridge section 14 to the receiving materials 22, 2.
2 and between the caps 23... and exits to the outdoors C from the exhaust port 25 of the ridge cover member 26. For this reason, the attic B is ventilated. Note that when wind hits the house 2, the wind pressure under the eaves is higher than the wind pressure on the outdoor C side of the ridge 14, so in the structure of this invention, air moves from the side with higher wind pressure to the side with lower wind pressure. As a result, the wind blows through well, and the attic B is sufficiently ventilated.

In addition, during the cold season, humid heated air rises from the living room to the attic B and rises toward the ridge 14, but in the structure of this invention, since the ridge 14 has ventilation holes 21, the above-mentioned heating Air is promptly discharged outdoors from the ventilation hole 21, and no dew condensation occurs on the ridge 14. Note that during the cold season, the temperature of the attic B on the side of the roof body 10 is lower than the temperature of the attic B on the side closer to the living room, so air rises due to natural convection and exits to the outdoors C through the ventilation hole 21. For this reason, attic B
The air flow in the attic B is improved due to the combination of the above-mentioned good atrium due to the high and low wind pressure and the air flow due to natural convection, and the attic B is sufficiently ventilated, so there is no condensation in the attic B. . Note that the purpose of ventilation in the attic B can be achieved by using the ventilation hole 21 in the ridge section 14 alone, but the ventilation hole 30 in the eaves ceiling material 29 can also achieve the purpose.
The ventilation effect will be further improved by using it in combination.

In addition, the outdoor C side of the ventilation hole 21 is covered by the ridge cover member 26, and the exhaust port 25 is connected to the ventilation hole 2.
Since it is located lower than 1 and has an opening facing downward, the structure of this invention is also excellent in terms of rain protection.

As explained above, according to the present invention, the following excellent effects can be achieved.

(a) A ventilation hole that opens to the attic and the outdoors is formed along the longitudinal direction of the ridge in the upper part of the roof sub-body, and an eave ceiling material with an intake hole is provided below the roof sub-body, so that the house is protected from wind. When the air under the eaves is blown, the air under the eaves enters the attic through the intake holes, rises along the shed panels, exits outside through the ventilation holes in the ridge, and ventilates the attic. (When the wind hits the house), the wind pressure under the eave roof material is higher than the wind pressure on the outdoor side of the ridge, so air moves from the side with higher wind pressure to the side with lower wind pressure, resulting in intake air The air that enters the attic through the holes passes directly through the ventilation holes in the ridge, allowing for good airflow and sufficient ventilation in the attic. In particular, in this invention, the air intake holes are provided in the eaves roof material, so the wind blowing against the house can be used efficiently, and the blow-through effect of the wind can be increased, allowing sufficient ventilation in the attic. You can accomplish whatever you want. Moreover, in the case of the present invention, the air in the attic causes natural convection during cold seasons because the temperature in the attic on the side of the roof body is lower than the temperature in the attic on the side closer to the living room. Since it rises inside the attic and exits outside through the ventilation holes, even if humidified air rises from the living room to the attic and toward the ridge during the cold season, such humidified air can quickly escape through the ventilation holes. The water is discharged outdoors, so no condensation forms on the ridge.

Therefore, according to the structure of the present invention, a ventilation hole is formed in the ridge, an intake hole is provided in the eaves roof material, and a shed panel with ventilation holes is installed in the attic. This allows for a synergistic effect of good wind blowing through the air intake holes in the eave roof material and natural convection of humidified air, and provides ventilation on the back side of the roof at the ridge where dew condensation is most likely to occur on snow-free roofs. It is possible to achieve excellent effects such as being able to prevent dew condensation from forming in the attic, especially on the back side of the roof at the ridge.

(b) In addition, the structure of the present invention is such that a shed panel is provided in the attic along the ridge of the roof that supports the ridge of the roof and has a ventilation hole in the center, and The structure is configured to allow the incoming wind to rise along the shed panels and create an airflow that passes through the ventilation holes, so even if the wind blows through the attic through the intake holes, the humidified air generated in the attic will not be absorbed. It does not cause turbulence to natural convection, and does not impede ventilation of the attic by natural convection.

Moreover, in this invention, the shed panel installed in the attic separates the living room side of the attic from the eaves side, so even if the wind blows through the air intake holes in the eave roof material, snow and snow will fall on the living room side ceiling. This has the advantage of preventing snow from penetrating into the house, and even with a structure in which openings such as air intake holes are provided in the eave ceiling material, snow does not accumulate on the ceiling of the house. In addition, the wind that ventilates the attic enters through the air intake holes installed in the eave ceiling material, so even if there is a lot of snow on the roof, the snow will prevent the wind from entering through the air intake holes. This allows for sufficient ventilation in the attic.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing an example of a conventional snow-shedding roof, Figure 2 is an explanatory diagram showing an example of a conventional snow-shedding roof with ventilation holes in the eaves, and Figure 3 is an example of an embodiment of this invention. FIG. 4 is a perspective view of the main part of FIG. 3 broken away, and FIG. 5 is a sectional view of the main part of FIG. 3. A... Snow-free roof, 10... Roof body, 13...
... Roof sub-body, 14 ... Ridge section, 21 ... Ventilation hole, 2
5...Exhaust port, 26...ridge cover member, B...attic, C...outdoor.

Claims (1)

[Scope of utility model registration request] The plate-shaped roof body is tilted downward toward the inside of the house to create an internal slope, and a horizontal gutter is installed at the end of the roof body, and a horizontal gutter is installed at the end of the roof body on the outside wall side of the house. A non-snow roof with a substantially M-shaped cross section in which a roof sub-body with a steep slope protruding outward is attached, and a ridge is formed between the roof main body of a house and the roof sub-body, and the upper part of the roof sub-body is attached. A ventilation hole that opens to the attic and the outdoors is formed along the longitudinal direction of the ridge, and below the roof sub-body, an eave ceiling material with intake holes connects the roof sub-body and the outer wall of the house. A shed panel is provided in the attic so as to cover the eaves of the roof body, and a shed panel supporting the ridge side of the roof body and having a ventilation hole in the center is provided along the ridge part of the roof body. An attic ventilation structure for a snow-free roof characterized by