JP2007063942A - Roof ventilation unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roof ventilation unit which is easily constructed, allows the efficient ventilation of a roof truss, and exerts a favorable waterproofing function against rainwater, i.e. a favorable flashing. <P>SOLUTION: In the formation of the roof ventilation unit, a space is secured between a bottom board 1 and a top board 2, and vent holes 9, 5 are formed at the bottom board 1 and the top board 2, respectively, in a manner laterally shifted from each other, and walls 3 are formed on both lower side surfaces. Then vent holes 4 are formed at upper portions of the walls, respectively, and the bottom board 1 is mounted on a sheathing board of a roof or a top board of the roof truss. When the roof ventilation unit thus formed is mounted to the sheathing board or the top board of the roof truss, the vent hole 9 formed at the bottom board 1 is matched with a vent hole formed at the sheathing board or in the top board of the roof truss. By the structure of the roof ventilation unit, the periphery of the vent hole 9 formed at the bottom board 1 is enclosed with walls 12 rising from the bottom board 1 to the top board 2, and the periphery of the vent hole 5 formed at the top board 2 is enclosed with walls 13 hanging from the top board 2 to the bottom board 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, air is circulated between the outside of the roof and the back of the shed through the thin gap between the overlapping portion of the roof tile and the vent opening opened to the base plate or the top plate of the shed. The present invention relates to a roof ventilation unit for ventilating a hut by circulating air between a back and an air passage provided in the attic.

  The general procedure for roof construction is to construct a slack so as to be perpendicular to the beam called the main building, and to put a tarpaulin on the field board stretched on this slack, on which the roof slope direction At a certain interval, a crosspiece is attached in a direction perpendicular to the gradient. After that, the roof tile is rolled from one plaster side to the other plaster side while hooking the protrusion on the lower surface of the tile bottom to the horizontal crosspiece. At this time, pile up other adjacent rails on top of the insertion of the roof tiles. The roof tiles are lined up one by one from the eaves side to the ridge along the roof slope from the bottom to the top, and the upper roof tiles are stacked on the bottom of the bottom roof tiles. Arrange the roof tiles at the top along the roof ridge.

The summer in Japan is hot and humid, and the roof is heated to a fairly high temperature in sunny summer. For this reason, the back of the hut also has a considerably high temperature, and cooling of the hut must be considered in terms of cooling efficiency. Therefore, roof ventilation is considered as a measure to prevent high temperatures in the cabin.
It is building ventilation that is considered to be the most efficient among roof ventilation. This is to provide a vent in the ridge at the top of the roof and vent the air behind the hut from here. The top of the roof is where hot air rises, so it is effective to ventilate in the ridge that is the top of the roof.

  On the other hand, the length of the ridge is not sufficient for the roof of a close-up ridge, and the roof ventilation is often insufficient only with the ridge ventilation. In addition, the roof on the first floor of a two-story house often has no ridge itself. For this reason, a structure has been proposed in which an opening is provided in the field of the inclined portion of the roof and ventilation is performed under the roof tile. As such a roof ventilation unit, what was described in the patent document quoted below is illustrated.

However, since these roof ventilation units ventilate through the side of the unit, there is a problem that ventilation efficiency is poor and sufficient ventilation cannot be performed. Also, the construction is troublesome.
JP 2001-20480 A JP-A-11-256750 JP-A-8-270165

  In view of such problems in conventional roof ventilation, the present invention can be easily constructed in a roof ventilation unit attached to a field or a roof top plate, and can efficiently ventilate the back of the hut, and rainwater. The purpose is to improve the waterproof function against rain, so-called rain.

  The bottom plate 1 and the top plate 2 provide a space as an air passage inside, and the bottom plate 1 and the top plate 2 are provided with ventilation ports 9 and 5 that are shifted in the width direction. The air is removed from the ventilation port 5 of the top plate 2 and the ventilation port 4 is provided at the upper part of the side surface so that the air can also escape from this side surface, while the lower part of the side surface is closed by the wall 3 and rainwater Intrusion was prevented.

  That is, the roof ventilation unit according to the present invention forms a space between the bottom plate 1 and the top plate 2 and provides the ventilation ports 9 and 5 with the bottom plate 1 and the top plate 2 being shifted in the width direction. The roof ventilation unit is characterized in that a wall 3 is provided in the lower part, a ventilation port 4 is provided in the upper part thereof, and the bottom plate 1 can be attached to a roof top plate or a roof top plate.

  Such a roof ventilation unit is attached to the base plate or the roof top plate according to the position of the ventilation port provided on the base plate or the roof top plate, with the ventilation port 9 on the bottom plate 1 side. By doing so, the air flowing into the space between the bottom plate 1 and the top plate 1 through the ventilation port 9 on the bottom plate 1 side from below the top plate of the base plate or the back of the shed becomes the ventilation port on the top plate 2 side. Exit from 5. The air flowing into the space between the bottom plate 1 and the top plate 1 also escapes from the upper ventilation port 4 on the side surface, but depending on the wind direction, the outside air enters from the upper ventilation port 4, thereby The air in the space is pushed out from the ventilation port 5 on the top plate 2 side. As a result, the roof can be efficiently ventilated.

Since the lower part of the side surface is closed as a wall 3, rainwater does not enter the space between the bottom plate 1 and the top plate 2. Further, since the ventilation openings 9 and 5 are provided so as to be shifted in the width direction of the roof ventilation unit, when rainwater enters from the ventilation opening 5 on the top plate 2 side, the water is vented on the bottom plate 1 side. It is possible to prevent the direct flow to the 9 side. From these things, the rain is good.
By attaching lattice-like louvers 10 and 6 to the ventilation openings 9 and 5 of the bottom plate 1 and the top plate 2, respectively, insects and the like can be prevented from entering from outside.

  Furthermore, since the periphery of the ventilation port 9 on the bottom plate 1 side is surrounded by a wall 12 rising from the bottom plate 1 toward the top plate 2, the ventilation ports 9 and 5 are provided shifted in the width direction of the roof ventilation unit. However, when rainwater enters from the ventilation port 5 on the top plate 2 side, it is possible to prevent the water from leaking from the ventilation port 9 on the bottom plate 1 side. In the same manner, the surroundings of the ventilation opening 5 on the top plate 2 side are surrounded by the wall 13 that hangs down from the top plate 2 toward the bottom plate 1, so that rainwater should have entered the ventilation opening 5 on the top plate 2 side. Sometimes, it becomes difficult for the water to flow to the ventilation port 9 side of the bottom plate 1.

  As explained above, the roof ventilation unit according to the present invention is simply attached to the top plate of the base plate or the back of the shed according to the position of the vent opening provided on the top plate of the base plate or the back of the roof plate 1 side. Because it can be installed in, it is easy to install. Furthermore, air circulation is smooth, efficient roof ventilation is possible, and a waterproof function against rainwater, so-called rain performance, is also good.

In the present invention, a space serving as an air passage is formed between the bottom plate 1 and the top plate 2, and ventilation holes 9, 5, and 17 are provided on the bottom plate 1, the top plate 2, and side surfaces, respectively. 9 through which air is circulated from the ventilation holes provided in the field plate and the rooftop.
Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

1 to 7 are views showing a roof ventilation unit according to an embodiment of the present invention.
The roof ventilation unit is made of a plastic molded body. This roof ventilation unit has a structure in which a space serving as an air passage is provided between the bottom plate 1 and the top plate 2, the height is suppressed low, and the width and length are also set smaller than those of the roof tile.

  The bottom plate 1 protrudes on both sides, and a fixing hole 7 through which a screw, a nail or the like passes is provided in the protruding portion. As shown in FIGS. 2 and 7, screw holes 11 are also provided in the inner portion. Further, a longitudinally long ventilation opening 9 is opened in the center portion of the bottom plate 1, and a lattice-like louver 10 is stretched on this portion. The shape of the louver 10 is shown in FIG. As shown in FIG. 7, the periphery of the ventilation port 9 is surrounded by a wall 12 that rises from the bottom plate 1 toward the top plate 2 to a height of about ½ of the space therebetween.

  On the other hand, the top plate 2 is narrower than the bottom plate 1, but both sides are inclined downward in a bowl shape. On one side, an attachment direction display 8 indicating the direction when attaching to the roof is described. Further, two vertically long ventilation openings 5 and 5 are opened near both sides, and lattice-like louvers 6 and 6 are stretched in this portion. The positions of the vents 5 and 5 are shifted to both sides from the vent 9 on the bottom plate 1 side. The shape of the louver 10 is shown in FIG. The periphery of the ventilation port 6 is surrounded by a wall 13 that hangs down from the top plate 2 toward the bottom plate 1 to a height of about ½ of the space therebetween.

  As is clear from FIG. 7, the lower portions on both sides of the roof ventilation unit are closed as walls 3, and the upper portion is an open vent 4. The upper part of the ventilation port 4 is a bowl-shaped ejection wall 17 projecting obliquely downward at an angle of about 45 °. Further, as shown in FIG. 1, the side surface opposite to the “up” displayed by the mounting direction display 8, that is, the side wall that is downward along the roof slope when the roof ventilation unit is installed on the roof. 3 is provided with a water outlet 16 as shown in FIG. 6 and 7, the lower half of the end face of the roof ventilation unit is closed by the wall 3, but the upper half of the roof ventilation unit is open and has a ventilation opening 15.

  FIG. 10 shows an example in which this roof ventilation unit is attached to a roof base plate. As described above, the general procedure for roof construction is to construct a slack 22 so as to be perpendicular to the beams of the main buildings 21 and 33, and to waterproof on the ground plate 23 stretched on the slack 22. A sheet is stretched, and a crosspiece 34 is attached on the sheet in a direction perpendicular to the gradient at a certain interval in the gradient direction of the roof. Thereafter, the roof tile 25 is rolled from one loose side to the other loose side while the protrusion on the bottom surface of the roof tile is hooked on the horizontal crosspiece 34. At this time, the other rails of the adjacent tiles are piled up on top of the insertion of the rails 25. The roof tiles 25 are lined up from bottom to top along the roof gradient from the eaves side to the ridge one row at a time, and the tile heads of the top tiles are piled up on the tile bottom of the bottom rail 25. After the topmost tiles 25 are lined up along the roof ridge, the ridge tile 26 is spread.

  In this roof construction, a vent 24 having a size substantially the same as the vent 9 of the bottom plate 1 of the roof ventilation unit is provided in advance in the base plate 23, and the vent 24 of the bottom plate 1 of the roof ventilation unit is provided in the vent 24. 9 is aligned and the roof ventilation unit is attached to the base plate 23. In this case, according to the attachment direction display 8 shown in FIG. 1, it attaches to the field board 23 so that the obstruction | occlusion wall 3 side may become an upper side of a roof gradient. For attachment, a wood screw or a nail is inserted into the base plate 23 from the fixing hole 7 of the bottom plate 1 or fixed to the base plate 23, or a screw is inserted into the inner screw hole 11 from below the base plate 23 and fixed. Then, the roof tile 25 is spread on the roof ventilation unit. Therefore, the length, width, and height of the roof ventilation unit are set to dimensions that do not hinder the roof tile 25 and fit in the gap between the roof tile 25 and the field plate 23.

  As already described, the air that has flowed into the space between the bottom plate 1 and the top plate 1 from the bottom plate 23 through the ventilation port 9 on the bottom plate 1 side escapes from the ventilation port 5 on the top plate 2 side. In addition, the air flowing into the space between the bottom plate 1 and the top plate 1 escapes from the ventilation ports 4 on both sides, but depending on the wind direction, the outside air enters through the ventilation ports 4 on either side, The air in the space is pushed out from the ventilation port 5 on the top plate 2 side. This air escapes through the gap of the roof tile 25 and above it.

Further, in addition to the ventilation ports 9 and 5 being shifted in the width direction of the roof ventilation unit, the wall 13 in which the periphery of the ventilation port 5 on the top plate 2 side hangs down from the top plate 2 toward the bottom plate 1. In addition, the surroundings of the vent 9 on the bottom plate 1 side are surrounded by the wall 12 rising from the bottom plate 1 toward the top plate 2, so that rainwater should be removed from the vent 5 on the top plate 2 side. When the water enters, the water does not flow to the ventilation port 9 on the bottom plate 1 side, but flows only to the portion of the surrounding bottom plate 1. And this water flows out on the waterproof sheet on the field board 23 from the water outlet 16 of the one side surface used as the lower side. That is, by attaching the roof ventilation unit with the side surface having the water outlet 16 facing downward along the roof slope, even if rainwater enters the unit, it is easily drained from the water outlet 16. Rainwater does not enter the building.
In addition, since the lower part of the side surface of the roof ventilation unit is the wall 3, even if rainwater that flows under the roof tile 25 flows on the waterproof sheet on the field plate 23, water is discharged from the side surface of the roof ventilation unit. Does not flow into the unit.

  FIG. 11 shows an example in which this roof ventilation unit is attached to the top plate of the roof shed. In recent house construction, a space 27 is provided between the inner wall 29 and the outer wall 30 and a space 28 is also provided between the top board 35 and the field board 23 in order to improve the airtightness and heat insulation inside the building. There is a method of circulating air in these. In FIG. 11, the overhang | projection part of the roof of the 1st floor of a two-story house is shown. In this case, it replaces with the said field plate 23, the ventilation opening 36 is provided in the top plate 35, and a roof ventilation unit can also be attached here. In this case, ventilation can be performed between the cabin back and the space 28. In addition, in FIG. 11, the code | symbol 31 is an outer wall siding and the code | symbol 32 is a draining tool.

It is a top view which shows one Example of the roof ventilation unit by this invention. It is a bottom view which shows one Example of the roof ventilation unit by this invention. It is a side view of the side which has a ventilation opening which shows one Example of the roof ventilation unit by this invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is an end elevation of the side which has a ventilation opening which shows one Example of the roof ventilation unit by this invention. FIG. 2 is an enlarged sectional view taken along line CC in FIG. 1. It is the D section enlarged view in FIG. It is the E section enlarged view in FIG. It is sectional drawing which shows the state which installed one example of the roof ventilation unit by this invention on a field board, and was installed in the roof. 1 is a cross-sectional view showing a state in which an embodiment of a roof ventilation unit according to the present invention is attached to a rooftop of a hut and installed on an attic.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottom plate 2 Top plate 3 Side wall occlusion wall 4 Side wall 5 Top plate ventilation port 6 Ventilation port louver 9 Bottom plate ventilation port 10 Ventilation port louver 12 Wall around the ventilation port 13 Wall 17 around the ventilation port Side vent

Claims (4)

A roof ventilation unit that is attached to a roof top plate or a roof top plate and ventilates the back of the roof, forming a space between the bottom plate (1) and the top plate (2), and the bottom plate (1) And the top plate (2) are provided with ventilation ports (9) and (5) shifted in the width direction, a wall (3) is provided at the bottom of the side surface, a ventilation port (4) is provided at the top, and the bottom plate A roof ventilation unit characterized in that (1) can be attached to a roof top plate or a roof top plate. The roof according to claim 1, characterized in that lattice-shaped louvers (10), (6) are provided in the ventilation openings (9), (5) of the bottom plate (1) and the top plate (2), respectively. Ventilation unit. The periphery of the vent (9) on the bottom plate (1) side is surrounded by a wall (12) rising from the bottom plate (1) toward the top plate (2). The roof ventilation unit described. The periphery of the ventilation opening (5) on the top plate (2) side is surrounded by a wall (13) suspended from the top plate (2) toward the bottom plate (1). The roof ventilation unit in any one of.

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