JP5452321B2 - Roof ventilation structure - Google Patents

Description

  The present invention relates to a roof ventilation structure in which the attic is ventilated at a roof ridge or the like.

  Various types of roof ventilation structures that can ventilate the attic at the top of the roof have been proposed in Patent Document 1 and the like.

  FIG. 8 shows an example thereof, 20 is a purlin, 21 is a rafter, 22 is a field board, and 23 is a roofing material that is laid on the field board 22. At the top of the ridge, a ventilation opening 3 is provided in the base plate 22 so as to open, and an inner cover 9 is attached to the ridge top so as to cover the ventilation opening 3. The inner cover 9 is provided with a communication hole 12 opened. Moreover, the ventilation cover 4 is attached to the ridge top part so that the inner cover 9 may be covered from the top. The lower ends of both end portions of the ventilation cover 4 are floated above the upper surface of the roof material 23, and the vent 5 is formed between the lower ends of both end portions of the ventilation cover 4 and the upper surface of the roof material 23. It is. Reference numeral 24 denotes a baffle plate.

  In the ventilation structure thus formed, the air in the attic 2 passes through the communication hole 12 of the inner cover 9 from the ventilation port 3 as indicated by the arrow a, and is between the inner cover 9 and the ventilation cover 4. The air is exhausted from the vent 5 through the vent 6. In this way, the attic is ventilated.

  On the other hand, when a strong wind flows along the roof surface, this wind is blown into the ventilation cover 4 from one ventilation port 5 as indicated by an arrow b, but passes through the ventilation path 6 in the ventilation cover 4 and the other. It goes out of the vent 5.

JP 2004-257196 A

  However, when rainwater is included in the wind blown along the roof surface as described above, a part of the wind passing through the ventilation path 6 in the ventilation cover 4 is ventilated through the communication hole 12 as indicated by an arrow c. When flowing into the attic 2 from the mouth 3, rainwater may also enter the attic 2. In particular, when strong wind is blown into the ventilation path 6 in the ventilation cover 4 from the ventilation opening 5, the pressure in the ventilation path 6 increases due to the wind pressure, and the air in the ventilation path 6 is caused by the pressure difference between the ventilation path 6 and the attic 2. Was sucked into the attic 2, and at this time, rainwater also easily entered the attic 2.

  This invention is made | formed in view of said point, and it aims at providing the ventilation structure of the roof which can prevent a rainwater permeating into an attic.

In the roof ventilation structure according to the present invention, a ventilation port 3 communicating with the attic 2 is provided in the roof 1, and a ventilation cover 4 covering the ventilation port 3 is attached to the roof 1 and opened to the ventilation cover 4 toward the roof surface. The ventilation structure of the roof is configured to ventilate the attic 2 through the ventilation passage 3 on the lower side of the ventilation cover 4 communicating with the ventilation opening 3 and the ventilation opening 5 . A rising piece which is a gap between the lower end of the side piece on both sides of the ventilation cover 4 and the roof surface and rises in the air passage 6 so as to face the air vent 5 at a position between the air vent 3 and the air vent 5. 7, and an air vent opening 8 is formed on the upper surface of the ventilation cover 4 so as to be positioned between the rising piece 7 and the vent 5 in a plan view.

Air attic 2 passes through the air passage 6 from the ventilation opening 3, which is exhausted from the vent hole 5 of the ventilation cover 4, are those that can be performed ventilated attic 2. Even if the wind flowing along the roof surface blows into the ventilation path 6 from the vent 5, the wind hits the rising piece 7 and escapes from the ventilation opening 4 to the outside of the ventilation cover 4. Intrusion from the ventilation path 6 into the ventilation port 3 is suppressed as much as possible, and rainwater with this wind can be prevented from entering the attic 2 from the ventilation port 3. In particular, even if strong wind is blown into the ventilation cover 4 from the vent hole 5, the pressure in the ventilation path 6 is increased by the wind pressure by hitting the rising piece 7 and coming out from the air vent opening 8. It is possible to prevent rainwater from being sucked into the attic 2 due to a pressure difference between the air passage 6 and the attic 2.

  Further, according to the present invention, the inner cover 9 that covers the ventilation port 3 is disposed below the ventilation cover 4, and the ventilation path 6 is divided substantially vertically by the inner cover 9 so that the inner cover 9 and the ventilation cover 4 are separated. The ventilation passage portion 10 and the lower side of the inner cover 9 are defined as the exhaust passage portion 11, and the vent holes 5 are provided on both sides of the ventilation passage portion 10 and through the communication holes 12 provided in the inner cover 9. The exhaust passage portion 11 is communicated with the ventilation passage portion 10.

  According to the present invention, even if strong wind flowing along the roof surface blows into the ventilation path 6 in the ventilation cover 4 from the ventilation hole 5, it passes through the ventilation channel section 10 partitioned by the inner cover 9 and the other ventilation. This exits from the mouth 5, and this strong wind flows directly into the ventilation opening 3 to prevent rainwater from entering the attic 2 together with the strong wind.

  In the present invention, the inner cover 9 and the ventilation cover 4 are attached to the top of the roof 1 so as to straddle both sides of the building, and the respective cross-sectional shapes in the direction crossing the ridge of the inner cover 9 and the ventilation cover 4 are formed. The inner cover 9 and the ventilation cover 4 are formed in a symmetrical shape, and the bending angle is further variable at the center of the symmetrical shape.

  According to the present invention, when the inner cover 9 and the ventilation cover 4 are attached to the roof top of the roof, the inner cover 9 and the ventilation cover 4 are bent at variable angles according to the roof gradient, so that the inner cover 9 and the ventilation cover 4 can be installed on the roof with various gradients. Is something that can be done.

  According to the present invention, even if the wind flowing along the roof surface blows into the ventilation path 6 from the vent 5, the wind strikes the rising piece 7 and the outside of the ventilation cover 4 from the ventilation opening 8. Therefore, it is possible to prevent the rainwater from entering the attic 2 from the ventilation port 3 together with this wind by suppressing the penetration from the inside of the ventilation path 6 to the ventilation port 3 as much as possible. In particular, even if strong wind is blown into the ventilation cover 4 from the vent hole 5, the pressure in the ventilation path 6 is increased by the wind pressure by hitting the rising piece 7 and coming out from the air vent opening 8. It is possible to prevent rainwater from being sucked into the attic 2 due to a pressure difference between the air passage 6 and the attic 2.

An example of embodiment of this invention is shown, (a) (b) is sectional drawing, respectively. It is an exploded perspective view same as the above. It is a perspective view of a ventilation cover and an inner cover same as the above. It is a partial expanded sectional view same as the above. It is a schematic sectional drawing which shows other embodiment of this invention. The formation site | part of a ventilation structure is shown, (a) (b) is a schematic diagram. The other example of a ventilation cover and an inner cover is shown, (a) is sectional drawing of the state which attached these covers to the roof, (b) is the cut end view of the edge part of these covers. It is sectional drawing which shows a prior art example.

  Embodiments of the present invention will be described below.

As shown in FIGS. 2 and 3, the ventilation cover 4 is formed in an inverted V-shaped longitudinal section, and ventilation cover side pieces 27 are integrally extended downward on both side ends (eave side edge). It is provided. A bent piece 28 that bends inward (ridge side) is provided at the lower end of each ventilation cover side piece 27. In addition, air vent openings 8 are provided at both ends of the ventilation cover 4 so as to open up and down. The wind vent opening 8 Yes forms the elongated slot shape along the side edges of the ventilation cover 4, each wind vent opening 8 is formed in the louver shape. Form of wind vent opening 8, in addition to such louver shape, such as round holes simply vertically penetrating can be formed arbitrarily. The ventilation cover 4 is formed by pressing a metal plate or the like, and the entire cross-sectional shape is an inverted V shape as described above, and is formed in a bilaterally symmetric shape. The bending angle of the inverted V shape can be adjusted by adjusting the bending angle of the top portion of the inverted V shape to be larger or smaller.

  As shown in FIG. 2, the inner cover 9 is composed of an inner cover body 9a having a vertical cross section formed in an inverted V shape, and a first partition piece 33 and a second partition piece 37 attached to the upper surface of the inner cover body 9a. The inner cover side pieces 30 are provided so as to integrally extend downward on both side ends of the inner cover main body 9a. A fixed piece 31 that is bent outward is provided at the lower end of each inner cover side piece 30. Ventilation holes 36 are formed at both end portions of the inner cover main body 9a so as to open up and down. The ventilation hole 36 is formed in an elongated slot shape along the side edge of the inner cover main body 9a, and a weir piece 32 rising upward is provided on the entire circumference of the peripheral edge of the ventilation hole 36. The inner cover body 9a is formed by pressing a metal plate or the like, and the entire cross-sectional shape is an inverted V shape as described above, and is formed in a bilaterally symmetric shape. The bending angle of the inverted V shape can be adjusted by adjusting the bending angle of the top portion of the inverted V shape to be larger or smaller.

  The first partition piece 33 formed of a long metal plate is provided with a fixed piece 34 bent at one end at the lower end of the vertical first standing piece 7a and a bent piece 35 bent at the other end at the upper end. Is formed. The second partition piece 37 formed of a long metal plate is formed by bending a fixed piece 39 on one side at the lower end of a vertical upright piece 38 and bending the cover piece 40 on the other end. It is what is done.

  The 1st partition piece 33 is attached to the upper surface in each edge part of the both sides of the inner cover main body 9a. That is, the first partition piece 33 is arranged so that the fixed piece 34 faces the inner side (ridge side) and the bent piece 35 faces the outer side (eave side), and the fixed piece 34 is placed on the side end of the inner cover main body 9a. The first partition piece 33 can be attached to the inner cover main body 9a by placing on the upper surface and fixing the fixing piece 34 to the inner cover main body 9a with screws, rivets, welding or the like. At this time, as shown in FIG. 4, a part of the first partition piece 33 is partially covered by the inner cover body 9a so that the first upright piece 7a is located outside the inner cover side piece 30 of the inner cover body 9a. The rising piece 7 is formed by the inner cover side piece 30 of the inner cover main body 9a and the first upright piece 7a of the first partition piece 33. A step portion 55 protruding from the upper surface of the side end of the inner cover main body 9 a is formed in the middle of the rising piece 7.

  The 2nd partition piece 37 is attached to the upper surface of the inner cover main body 9a in the position which covers each ventilation hole 36 of the inner cover main body 9a. That is, by placing the fixed piece 39 of the second partition piece 37 on the inner cover main body 9 a at a position closer to the center (building) than the ventilation hole 36, the ventilation hole 36 is covered with the cover piece 40 of the second partition piece 37. Can be attached to the inner cover body 9a by fixing the fixing piece 39 to the inner cover body 9a with screws, rivets, welding or the like. A slit-shaped communication hole 12 is formed between the upper edge of the first upright piece 7 a of the first partition piece 33 and the eaves side edge of the cover piece 40 of the second partition piece 37. As shown in FIG. 4, the height of the upper end edge of the first upright piece 7a (that is, the bent piece 35) is set to be equal to or higher than the height of the eaves side edge of the cover piece 40. It is suitable for wind flow control. That is, when the wind that has passed over the first upright piece 7a constituting the upper portion of the rising piece 7 passes through the ventilation passage portion 10 as will be described later, this wind passes through the communication hole 12 and the exhaust passage portion 11. It is possible to prevent the air from flowing into the air flow, and the flow of the wind in the air flow passage section 10 becomes smoother.

  Furthermore, 42 is a connection tool, which is formed as a piece. The connecting tool 42 is provided with a lower fixing piece 44 bent at the lower end of the vertical piece 43 and an upper fixing piece 45 bent at the upper end of the vertical piece 43 in the same direction, and an L-shaped contact is provided at the tip of the upper fixing piece 45. It is formed by providing the piece 46. The upper fixing piece 45 is provided with a fixing hole 47 as an elongated hole in a direction parallel to the bending direction of the upper fixing piece 45.

  FIG. 1 shows an embodiment in which the inner cover 9 and the ventilation cover 4 are attached to the top of the roof 1 to form a ventilation structure in the roof ridge. The roof 1 is configured by arranging rafters 21 on both sides of the purlin 20, attaching a field board 22 on the rafters 21, placing a waterproof sheet 50 on the field board 22, and spreading a roofing material 23 on the waterproof sheet 50. Is formed. A ventilation opening 3 is formed by cutting off the end of the field plate 22 at the top of the roof, and the space of the attic 2 is opened by the ventilation opening 3. In FIG. 1, a drainer 51 is provided so as to surround the inner periphery of the ventilation port 3.

  The inner cover 9 is disposed so as to straddle both sides of the ridge at the top of the roof 1 in a state of covering the ventilation opening 3 from above. Then, the fixed piece 31 of the inner cover 9 is placed on the roofing material 23 via the waterproof material 53, and a fixing tool such as a screw is driven from the fixed piece 31 through the roofing material 23 into the base plate 22 to thereby form the inner cover. 9 is fixed.

  You may make it perform the construction which fixes the inner cover 9 to the roof 1 as mentioned above in the state which attached the connection tool 42 to this inner cover 9 previously.

  The coupling tool 42 is attached to the inner cover 9 from above the first partition piece 33. That is, in a state in which the connecting tool 42 is disposed so that the vertical piece 43 is brought into contact with the back surface of the first upright piece 7 a of the first partition piece 33, the connecting tool 42 is placed on the fixed piece 34 of the first partition piece 33. By placing the lower fixing piece 44 and fixing the lower fixing piece 44 to the fixing piece 34 with screws, rivets, welding, or the like, the connecting tool 42 can be mounted on the inner cover 9. The connecting tool 42 and the first partition are fixed by screwing, riveting or the like so as to reach the inner cover body 9a from the lower fixing piece 44 of the connecting tool 42 to the inner cover body 9a via the fixing piece 34 of the first partitioning piece 33. The piece 33 can be fixed to the inner cover main body 9a by a single operation. When the coupling tool 42 is attached to the inner cover 9 in this way, the contact piece 46 provided on the upper fixing piece 45 of the coupling tool 42 is placed on the covering piece 40 of the second partition piece 37. The height position of the cover piece 40 is restricted to a predetermined position. The contact piece 46 may be fixed to the cover piece 40.

  In addition, the ventilation cover 4 is arranged on the top of the roof 1 so as to straddle both sides of the ridge in a state of covering the inner cover 9 from above, above the ventilation opening 3. Then, the ventilation cover 4 can be attached by placing the ventilation cover 4 on the connector 42 attached on the inner cover 9 and connecting the ventilation cover 4 to the upper fixing piece 45 of the connector 42. It can be done. As shown in FIG. 4, the ventilation cover 4 is coupled to the upper fixing piece 45 of the connector 42 by passing a screw 58 through a through hole 57 provided in the ventilation cover 4, and this screw 58 is connected to the upper fixing piece 45 of the connector 42. This can be done by screwing into the fixing hole 47.

  When the ventilation cover 4 is attached in this way, the side ends (that is, the eaves side end portions) on both sides of the ventilation cover 4 are located on the eaves side relative to the both side ends of the inner cover 9, and the side pieces 27 on both sides of the ventilation cover 4 A small gap is formed between the lower end and the upper surface of the roof material 23 that forms the surface of the roof 1. A small gap between the lower ends of the side pieces 27 on both sides of the ventilation cover 4 and the upper surface of the roofing material 23 becomes the vent hole 5 that opens toward the roof surface. A ventilation path 6 is formed in the ventilation cover 4 between the ventilation cover 4 and the roof surface. The ventilation path 6 is formed on both sides of the ridge by the vents 5 at both ends of the ventilation cover 4. It opens to the outside. A rising piece 7 located at the side end of the inner cover 9 is disposed in the vicinity of the inside of the vent hole 5. An air vent opening 8 provided on the upper surface of the ventilation cover 4 is located on the eaves side of the rising piece 7 in a plan view, and is for air venting between the rising piece 7 and the vent 5. An opening 8 is arranged.

Since the inner cover 9 is provided on the lower side of the ventilation cover 4, the air passage 6 in the ventilation cover 4 is vertically divided by the inner cover 9, and the upper side is the ventilation cover 4 and the inner cover 9. ventilation channel portion 10 between the lower side is to be the exhaust channel unit 11 between the inner cover 9 and the roof surface. Exhaust channel unit 11 and the ventilation passage 10 is communicated with the communication hole 12 provided on the inner cover 9. The both side ends of the air passage portion 10 is open toward the top surface by the vent 5, the exhaust channel unit 11 is opened by ventilation opening 3 in the attic 2. Therefore, the space of the attic 2 is communicated with the outdoor space through the ventilation port 3, the exhaust channel portion 11, the ventilation hole 36, the communication hole 12, the ventilation channel portion 10, and the ventilation port 5.

  In the roof ventilation structure formed as described above, the air in the attic 2 flows into the exhaust passage portion 11 through the ventilation port 3 as shown by an arrow a in FIG. The air flows from the hole 36 through the communication hole 12 into the ventilation channel portion 10, further flows through the ventilation channel portion 10, reaches the vent 5, passes through the vent 5, and is exhausted to the outdoor space. The air in the attic 2 is exhausted to the outdoor space through such a route, and the attic 2 can be ventilated. In addition, it is possible to prevent rainwater from entering the attic 2 from the ventilation opening 3 by being blocked by the ventilation cover 4 when it rains. In particular, the ventilation opening 3 is also provided by the inner cover 9 in addition to the ventilation cover 4. Since it is covered, it can prevent rainwater from entering twice.

  On the other hand, when the wind blows on the roof 1 in a strong wind, the wind blows from the eaves side to the ridge side along the surface of the roof 1, and this wind is as shown by the arrow b in FIG. It flows into the ventilation flow path part 10 of the ventilation path 6 from the ventilation opening 5 which opens toward the roof surface. However, the rising piece 7 is disposed in the vicinity of the inside of the vent hole 5 as described above, and the rising piece 7 rises from the bottom to a height of about half the vertical width of the ventilation flow path portion 10. Even if strong wind flows from the vent hole 5 into the ventilation channel portion 10 of the vent path 6, it is blocked by the rising piece 7. Thus, the wind blocked by the rising piece 7 changes its direction upward along the rising piece 7, and the air vent opening 8 that opens above the vent 5 and the rising piece 7 is provided. Pass through and exit to the outdoor space as indicated by the arrow c in FIG. At this time, as described above, since the step portion 55 is formed in the middle of the rising piece 7, the flow of the wind blown from the vent 5 is changed so as to be reversed at the step portion 55. Therefore, the air flows upward along the rising piece 7 and easily escapes from the air vent opening 8. In addition, the bent pieces 35 prevent the intrusion of rainwater and increase the strength of the first partition piece 33 formed to be long and prevent twisting. The height of the stepped portion 55 is suitable for wind flow control at a position that is equal to or slightly higher than the height of the upper end of the vent hole 5.

  Here, if the wind blown from the vent hole 5 is simply blocked by the rising piece 7, most of the blown wind will get over the rising piece 7 and flow through the ventilation passage portion 10, and a part of it will flow. There is a possibility that rainwater flows into the attic 2 from the ventilation port 3 together with the wind. In contrast, in the present invention, as described above, the wind blocked by the rising piece 7 passes through the air vent opening 8 and escapes to the outdoor space. The wind flowing through the portion 10 is reduced. For this reason, the amount of wind reaching the ventilation opening 3 becomes very small, and rain water along with the wind can be prevented from flowing into the attic 2 from the ventilation opening 3. Further, if the wind blown from the vent hole 5 is simply blocked by the rising piece 7, the pressure of the strong wind blown increases the pressure in the ventilation channel portion 10, and the pressure in the ventilation channel portion 10 and the inside of the attic 2 are increased. Due to the difference in pressure, the air in the ventilation flow path section 10 passes through the exhaust flow path section 11 and is sucked into the attic 2, and rainwater may enter the attic 2 together with the sucked air. On the other hand, in the present invention, as described above, the wind blocked by the rising piece 7 passes through the ventilation opening 8 and escapes to the outdoor space, so that the pressure in the ventilation channel 10 is increased. There is no. For this reason, the air in the ventilation channel 10 is not sucked into the attic 2 due to the difference between the pressure in the ventilation channel 10 and the pressure in the attic 2, and rainwater may enter the attic 2. It can be prevented.

  Then, a part of the wind blown from the vent hole 5 as described above passes over the rising piece 7 and flows through the ventilation passage portion 10 as indicated by an arrow d in FIG. However, since the ventilation path 6 in the ventilation cover 4 is divided into the ventilation channel part 10 and the exhaust channel part 11 by the inner cover 9, the wind over the rising piece 7 is the ventilation channel part. 10 is passed through as it is, and blown out into the atmosphere from the air vent 5 on the side opposite to the side where the wind is blown. Therefore, even if wind is blown from the vent hole 5 together with rain, much of the wind is blocked by the rising piece 7 and is released from the opening 8 for venting, and a part of the wind is also raised. 7, the air passes through the ventilation channel 10 as it is and is discharged from the other vent 5. This wind enters the exhaust channel 11 and enters the attic 2 from the ventilation port 3. Inflow can be prevented.

  A water-absorbing dew condensation prevention sheet 60 is attached to the bottom lower surface of the ventilation cover 4 and the top lower surface of the inner cover 9 so as to prevent condensation on the lower surface of the ventilation cover 4 and the lower surface of the inner cover 9. It is. Even if dew condensation occurs and, for example, dew condensation falls from the lower surface of the ventilation cover 4, the inner cover 9 is displaced from the communication hole 12, and the ventilation hole 36 is provided. Even if it passes through, it can prevent entering the attic 2 from the ventilation opening 3. As described above, the condensed water can be prevented from falling to the ventilation port 3, but the second partition piece 37 prevents the wind containing rain water from flowing into the ventilation port 3 through the communication hole 12. It goes without saying that he also plays a role. In addition, rain water and dew condensation water flowing on the upper surface of the inner cover body 9 a are blocked by the weir pieces 32 provided around the ventilation holes 36 and are prevented from passing through the ventilation holes 36.

  In the embodiment shown in FIG. 1, a ventilation structure is formed in a double-flow roof ridge having roof surfaces on both sides of the ridge. In such a double-flow roof, the inclination of the roof surface on both sides of the ridge differs for each roof. Therefore, it is necessary to match the angle of the inverted V-shaped cross section of the ventilation cover 4 and the inner cover 9 attached to the building top to the inclination angle of the roof surface. Therefore, in the present invention, the bending angle of the inverted V-shaped top portions of the ventilation cover 4 and the inner cover 9 can be increased or decreased, and the inverted V-shaped peak can be adjusted according to the inclination angle of the roof surface. The bending angle is adjusted so that installation to the ridge top can be easily performed.

  Here, as shown in FIG. 3, both end faces 62 in the longitudinal direction along the ridge of the ventilation cover 4 are closed by providing end face pieces 62. The end face pieces 62 are bordered on the top of the ventilation cover 4. It is divided into a pair of left and right pieces 62a and 62a. And the edge part on the opposite side of each piece 62a, 62a of the end face piece 62 overlaps, and even if the bending angle of the top part of the ventilation cover 4 is adjusted, the end face piece 62 always overlaps with each piece 62a, 62a. The closed state of both end faces of the cover 4 can be maintained.

  Further, since the ventilation cover 4 is connected and attached to the inner cover 9 by the connecting tool 42, if the bending angle of the inverted V-shaped top of the ventilation cover 4 or the inner cover 9 is changed as described above, the ventilation cover 4 is changed. The coupling position with respect to the coupling tool 42 is shifted. Therefore, as described above, the fixing hole 47 provided in the upper fixing piece 45 of the connector 42 is formed as a long hole. That is, as shown in FIG. 4, when the screw 58 passed through the through hole 57 provided in the ventilation cover 4 is screwed into the fixing hole 47 and the ventilation cover 4 is attached to the connector 42, By adjusting the screwing position in the direction of the arrow, the displacement of the coupling position of the ventilation cover 4 with respect to the connector 42 can be adjusted.

  In particular, in the present embodiment, the cover piece 40 can be divided into both sides by positioning the ventilation hole 36 at the side edge of the inner cover 9, and the top of the inner cover 9 is connected to the top of the ventilation cover 4. Similarly, a thin plate such as a metal plate is formed in a single layer so that it can be easily bent according to the roof gradient (no problem even if it is a flexible material such as the condensation prevention sheet 60). It becomes possible. Therefore, it is easy to cope with a gradient while ensuring high waterproofness.

  FIG. 5 shows another embodiment of the present invention, in which the inner cover 9 is attached in contact with the roof surface. In FIG. 5, 64 is a baffle plate piece provided on the ventilation cover 4 or the inner cover 9.

In each of the above embodiments, the ventilation structure is formed by attaching the ventilation cover 4 and the inner cover 9 to the top of the double-flow roof shown in FIG. 6 (a). You may make it form the same ventilation structure in the ridge top part of a single flow roof as shown to the b part of b). Furthermore, a similar ventilation structure may be formed at the crossing point where the roof is added in one flow from the wall surface of the main building, as shown in FIG. 6 (a).

  FIG. 7 shows another example of the ventilation cover 4 and the inner cover 9, and FIG. 7A is a sectional view showing a state in which the ventilation cover 4 and the inner cover 9 are attached to the roof 1 in the same manner as in FIG. FIG. 7B is a cut end view of the end portion in the longitudinal direction along the ridge of the ventilation cover 4 and the inner cover 9. In this example, the ventilation cover 4 is formed in substantially the same configuration as the ventilation cover 4 in FIGS. 1 to 4 except that the ventilation opening 4 is not provided.

In addition, the inner cover 9 is also formed in substantially the same configuration as the inner cover 9 of FIGS. 1 to 4 described above, but in the example of FIG. 7, it covers the second partition piece 37 attached to the upper surface of the inner cover 9. The piece 40 is formed to be inclined obliquely downward toward the vent hole 5 side of the ventilation cover 4. Here the cover piece 40, as described above and have set to be the same or lower position and the upper end of the rising-up piece 7 forming a first standing pieces 7a, survived on the first standing pieces 7a The wind is prevented from flowing from the communication hole 12 to the exhaust passage portion 11 when passing through the ventilation passage portion 10. At this time, as the cover piece 40 is inclined downward as in the example of FIG. 7, the wind over the first upright piece 7 a becomes difficult to go around to the lower side of the cover piece 40, and It becomes easy to flow along the slope on the upper surface, and it is possible to more reliably prevent the wind from flowing from the communication hole 12 into the exhaust flow path portion 11.

DESCRIPTION OF SYMBOLS 1 Roof 2 Attic 3 Ventilation opening 4 Ventilation cover 5 Ventilation hole 6 Ventilation path 7 Rising piece 8 Venting opening 9 Inner cover 10 Ventilation flow path part 11 Exhaust flow path part 12 Communication hole

Claims (3)

The vent of attic communicating with the roof provided, said ventilation cover which covers the ventilation opening is provided a vent that opens toward the top surface to the ventilation cover is attached on the roof, communicating with the vent and the vent a ventilation structure of a roof to perform ventilation of the attic through the lower air passage of the ventilation cover, the vent, between the lower end and the top surface of each side of the side piece of the ventilation cover a gap, a start-up piece that rises into the air passage at a position between the vent and the vent port is provided, for the wind vent the upper surface of the ventilation cover at a location between said vent and said power-up piece A roof ventilation structure characterized by forming an opening. The cover inner covering pre Symbol vents provided disposed under the ventilation cover, by dividing the pre-Symbol ventilation path up and down in said cover, ventilation flow path portion between the ventilation cover and the inner cover the lower side of the inside cover and exhaust channel unit, with a pre-Symbol vent provided on both sides of the ventilation channel section, the ventilation flow the exhaust channel unit through the communication hole provided in said cover The roof ventilation structure according to claim 1, wherein the roof ventilation structure is communicated with a road portion. The Toitadaki portion of the roof, the mounting said ventilation cover and front Kenai cover so as to straddle both sides of the ridge, forming the respective cross-sectional shape in a direction transverse to the ridge of the ventilation cover and the inner cover symmetrically shaped with ventilation roof structure according to claim 2, characterized by comprising the ventilation cover and the inner cover respectively, formed on the bending angle Allowed changing at the center of the symmetrical shape.

Images