JPH11280221A - Structure of ventilation box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a ventilation box which does not select any installation area while preventing the rain from entering. SOLUTION: A ventilation box 1 to cover a whole or a part of a ridge comprises a vent hole 3 to communicate air between at least a pair of side surfaces opposite to each other, an umbrella water drip 4 of ridge-shaped section which is provided in the ventilation box 1 and located below the vent hole 3, and a vent hole 5 to be communicated with an attic space 6 whose upper side is covered by the umbrella water drip 4. A riser water drip 2 to be erected from an edge part of the vent hole 5 is provided on a side part of the vent hole 5, and a lower end of the umbrella water drip 4 is suspended so as to be lapped in the horizontal direction on the riser water drip 2. A lower end of a top plate of the ventilation box is suspended so as to cover its forward part in front of the vent hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a ventilation box attached to a ridge of a roof for ventilating the back of a cabin.

[0002]

2. Description of the Related Art Various types of ventilation boxes have been used in buildings. For example, a ventilation box described in Japanese Utility Model Publication No. 7783/1999 has ventilation holes on opposing side surfaces, and the ventilation holes are located below a top plate that covers the entire ventilation box. According to this configuration, it is usually possible to prevent rainwater from flowing in from the ventilation hole by the top plate, but when rain blows from the ventilation hole due to a strong wind or the like, the rainwater is prevented from flowing into the back of the hut. Can not do. The ventilation box described in Japanese Utility Model Publication No. 48357 is composed of a ventilation hole provided in the roof of the ventilation box and an umbrella-shaped drainer located below the ventilation hole. In this configuration, since the ventilation hole is provided on the upper surface, it is difficult to install in a snowfall area.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ventilation box structure which can prevent rainwater from flowing in and can be installed anywhere.

[0004]

According to the present invention, a ventilation box for covering all or a part of a building is provided with a ventilation hole for communicating air between at least a pair of opposing side surfaces, and a ventilation box. The umbrella drain is provided below the vent hole, and the ventilation hole communicates with the back of the cabin whose upper part is covered by the umbrella drain. According to this configuration, the ventilation holes are provided so as to allow air to flow between the opposing side surfaces, so that the installation area is not limited as in the case where the top plate is provided, and can be used in snowy areas. In addition, since the umbrella drainage is provided below the ventilation hole, even if rainwater flows in from the ventilation hole, it is possible to prevent the umbrella drainage from receiving rainwater and flowing directly into the ventilation hole.

[0005] It is also preferable to provide a rising drain which rises from the edge of the ventilation hole on the side of the ventilation hole, and to have the lower end of the umbrella drain hanging vertically so as to overlap the rising drain. According to this configuration, since the lower end of the umbrella drainer is positioned so as to overlap the rising drainer in the horizontal direction, it is possible to prevent rainwater dripping from the lower end of the umbrella drainer from flowing into the ventilation holes by the startup drainer. Can be.

Furthermore, it is preferable that the lower end of the top plate of the ventilation box is hung in front of the ventilation hole so as to cover the front. According to this configuration, the inflow of rainwater from the ventilation hole can be reduced, and the front of the ventilation hole is covered, so that fire protection is improved.

On the other hand, the ventilation box is formed in a rectangular shape in plan view, and an umbrella drain is provided along the longitudinal direction of the ventilation box.
It is also preferable that the umbrella drain is closed and the width of the umbrella drain is made wider than the distance between the opposed ventilation holes located on the side of the umbrella drain. According to this configuration, since the width of the umbrella drainer is wider than the interval between the opposed ventilation holes, it is possible to reliably prevent rainwater that has entered from the ventilation holes from entering the back of the cabin from the ventilation holes.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, the ventilation box 1 covering all or a part of the building is provided with a ventilation hole 3 for communicating air between at least a pair of opposed side surfaces, and a ventilation box 1.
An umbrella drain 4 having a mountain-shaped cross-section and located below the ventilation hole 3 is provided therein, and a ventilation hole 5 communicating with a hut back 6 covered by the umbrella drain 4.

The ventilation box 1 according to the present embodiment has three members: a ventilation box 1 body forming an outer surface, a pair of foundation frames 7, a umbrella drainer 4 and a rising drainer 2 built therein. Are roughly divided into These are all formed of steel plates.

The main body of the ventilation box 1 is formed in a rectangular shape in plan view that is long in the direction along the ridge, and the rising surface 8 at the lower part of the main body of the ventilation box 1 is formed of four vertical flat plates. At the lower end of the ventilation box 1 body, the rising surface 8
The leg 9 is bent continuously at an angle along the roof, and the leg 9 is fixed to the roof material by abutting the roof 9 with screws. In the middle portion of the upper part of the ventilation box 1, the rising surface 8 is depressed inward over the outer periphery, and a pair of horizontally extending and parallel design fins 12 is provided inside the depression 11 in two vertical stages. It is decorated in. The tip of the fin 12 coincides with the lower rising surface 8 and the tip of the top plate 13. The upper surface of the fin 12 is inclined downward toward the outside to prevent stagnation of rainwater.

The top plate 13 of the ventilation box 1 is slightly inclined downward from the ridge toward the eaves, forms a hanging piece 14 so as to cover the front of the ventilation hole 3, and is then folded inside. The ventilation holes 3 are provided near the upper end of the rising surface 8 depressed inward, and are provided on the side surface and the end surface of the ventilation box 1, respectively. In this embodiment, as shown in FIG. 2, a pair of rectangular ventilation holes are provided side by side near the end of the ventilation box 1 on the side surface, and a pair of square ventilation holes are also provided on the end surface side. Pores 3 are provided. The ventilation hole 3 is a hanging piece 14 hanging from the top plate 13 as described above.
The front is covered with. Therefore, the air that has passed through the vent hole 3 is discharged through the lower side of the hanging piece 14 while flowing slightly downward.

Next, the base frame 7 will be described.
The base frame 7 is located at both ends of the draining unit, and is formed by a base plate 7a parallel to the end surface of the ventilation box 1 and side plates 7b formed on both sides thereof and along the inner surface of the rising surface 8 at the lower side of both sides of the ventilation box 1. Is done. A leg 7c is formed at the lower edge of the substrate 7a by being bent toward the edge of the ventilation box 1, and the leg 7c is formed in a mountain shape in cross section as viewed from the front, and has a shape along the base of the ridge. The substrate 7a has the same width as the space between the inner surfaces of the rising surfaces 8 on the lower sides of the ventilation box 1 except for the lower end, but the lower portion of the substrate 7a is formed to be narrower toward the legs 7c, and the lower end of the substrate 7a Roofing materials 1
The interference with zero is prevented. The leg 7c is fixed by being screwed into contact with the base of the ridge of the roof. The upper end of the substrate 7a is bent inward to have a reinforcing effect and to prevent water leakage from between the edge of the umbrella drain 4 and the inner surface of the base frame 7. The end of the umbrella drainer 4 is closed by the substrate 7a of the base frame 7.

The draining unit will be described. The draining unit includes an umbrella drainer 4, a base plate 16 having a mountain-shaped cross section attached to the roof ridge, a rising drainer 2 attached to the base plate 16, and a connecting member for connecting the umbrella drainer 4 and the base plate 16 up and down. Consists of The upper part of the umbrella drainer 4 has a mountain-shaped cross-section, and the lower surface of the upper part of the umbrella drainer 4 is provided with a strip-shaped anti-dew material made of foamed polyurethane, and the warm air in the hut back 6 is cooled by the umbrella drainer 4. Prevents condensation on the bottom surface. The side of the umbrella drainer 4 hangs downward, and the lower end is slightly bent inward. Base plate 16
Has a mountain cross section as described above, and a rectangular ventilation hole 5 extending along the roof ridge is formed in the center thereof.
The umbrella drainer 4 only needs to have a shape in which the central portion gradually rises, and does not necessarily need to be mountain-shaped. For example, the cross section may be semicircular. The ventilation hole 5 communicates with the back of the hut 6 through a gap between the ridges of the roof base on the opposite roof surface. In the present embodiment, the roof base is a roof panel 1 formed by attaching a face material made of plywood to an upper surface of an outer peripheral frame forming an outer periphery.
5 is formed. The rising drainer 2 is attached to the side edge of the ventilation hole 5 of the base plate 16, and the lower end thereof is bent outward to form a leg.
6. The upper end of the rising drainer 2 is bent outward to form a water return.

The umbrella drainer 4 and the base plate 16 are connected by a connecting plate 17 to be integrated. The connecting plate 17 has the same width as the interval between the rising drainers 2, and the ends of both the rising drainers 2 are fixed to the sides thereof. The lower end of the connecting plate 17 is fixed to the base plate 16, and the upper end is joined to the back surface of the umbrella drainer 4. Therefore, the connecting plate 17
Are formed in a chevron shape.

The mounting of the ventilation box 1 according to the embodiment will be described. First, the construction of the roof foundation is performed. The roof foundation is formed by the roof panel 15 as described above.
The roof panel 10 is attached with a roofing material 10 made of a three-dimensionally formed metal plate. However, the roofing material 10 is not provided at the upper end of the roof panel 15 serving as a ridge. First, a base plate 16 of a drainer unit is attached to the roof base formed by the roof panel 15 and fixed to the ridge portion by screws. Next, a base frame 7 is attached to both ends of the umbrella drainer 4 of the drainer unit.
6 and fix it with screws. Next, the ventilation box 1 main body is put on them, the leg 9 at the lower end of the ventilation box 1 main body is fixed to the roof surface, and a screw is driven into the side plate 7b of the base frame 7 from the side of the ventilation box 1 main body. Fix with.

The air flow in the ventilation box 1 of the present embodiment passes through the gap between the upper ends of the roof panel 15 and further passes through the ventilation holes 5 in the base plate 16 of the draining unit.
The water is discharged from the upper ventilation hole 3 through the upper portion of the rising drain 2 and the lower end of the umbrella drain 4. When water enters the ventilation box 1, the water is received on the upper surface of the umbrella drain 4, and then is dripped on the upper surface of the roof panel 15 along the hanging part of the side of the umbrella drain 4 and discharged.

As described above, the upper part of the rising surface 8 of the ventilation box 1 is recessed from the lower part, and the ventilation hole 3 is formed near the upper end thereof. Since it is wider than the upper portion of the raised portion and therefore wider than the space between the opposed ventilation holes 3, it is possible to reliably prevent rainwater that has entered the ventilation box 1 from the ventilation holes 3 from flowing into the back of the shed 6.

[0018]

The present invention is as described above. According to the first aspect of the present invention, the ventilation holes are provided so as to circulate the air between the opposing side surfaces, and the air holes are provided as in the case where the top plate is provided. There is no restriction on the installation area, and it can be used in snowy areas. In addition, since the umbrella drainage is provided below the ventilation hole, even if rainwater flows in from the ventilation hole, it is possible to prevent the umbrella drainage from receiving rainwater and flowing directly into the ventilation hole.

According to the second aspect of the present invention, since the lower end of the umbrella drainer is positioned so as to overlap the rising drainer in the horizontal direction, rainwater dripping from the lower end of the umbrella drainer flows into the ventilation hole. It can be prevented by setting up and draining water.

According to the third aspect of the present invention, the inflow of rainwater from the ventilation hole can be reduced, and the front side of the ventilation hole is covered, so that fire resistance is improved.

According to the fourth aspect of the present invention, since the width of the umbrella drain is wider than the interval between the opposed ventilation holes, it is possible to reliably prevent rainwater that has entered through the ventilation holes from entering the back of the hut through the ventilation holes. Can be.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIGS. 2A and 2B show an embodiment of the present invention, wherein FIG. 2A is an end face of a ventilation box main body, and FIG.

FIG. 3 is a side view of a ventilation box in which a part of one embodiment of the present invention is omitted.

FIG. 4 is an exploded perspective view showing a mounting structure of the drain unit according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a mounting structure of the base frame according to the embodiment of the present invention.

FIG. 6 is a perspective view showing an attachment structure of the ventilation box body according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ventilation box 2 Start-up drainer 3 Vent hole 4 Umbrella drainer 5 Ventilation hole 14 Hanging piece

Claims (4)

[Claims] 1. A ventilation box that covers all or a part of a building, wherein a ventilation hole that communicates air between at least a pair of opposing side surfaces, and a center provided in the ventilation box and located below the ventilation hole. A ventilation box, comprising: an umbrella drain having a sectional shape gradually rising from a side portion; and a ventilation hole communicating with the back of a cabin whose upper part is covered by the umbrella drain. 2. A ventilation drain which rises from an edge of the ventilation hole is provided on a side of the ventilation hole, and a lower end of the umbrella drain is suspended so as to overlap the rising drain horizontally in a horizontal direction. The ventilation box according to claim 1, wherein 3. The structure of a ventilation box according to claim 1, wherein a lower end of a top plate of the ventilation box is suspended in front of the ventilation hole so as to cover the front of the ventilation hole. 4. The ventilation box is rectangular in plan view,
An umbrella drainer is provided along the longitudinal direction of the ventilation box,
4. The umbrella draining device according to claim 1, wherein the umbrella draining end is closed and the width of the umbrella draining device is formed to be wider than the interval between opposed air holes located on the side of the umbrella draining device. Structure of ventilation box.