Ventilation device

Abstract

To provide a ventilation device capable of reducing the possibility of water leakage on a roof.SOLUTION: A ventilation device 1 installed so as to cover a ventilation opening G formed in a ridge portion of a roof Y includes: a base member 30 including a pair of supports 31 and a pair of connecting pieces 32; a body member 40 having a bottom plate portion 41 having an opening 41a facing the ventilation port G and a drooping portion 42 hanging from the bottom plate portion 41; and a cover member 60 having a top plate portion 61 disposed above the body member 40 and forming an air passage R between itself and the bottom plate portion 41. The body member 40 is attached to the base member 30 by a fixture N2 penetrating through the drooping portion 42 of the body member 40 and an upright portion 31b of the support 31 in a state of being overlapped. Since the fixture N2 penetrates in a horizontal direction and does not penetrate a roof material J, the possibility of water leakage in a ventilation ridge M is reduced.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This invention relates to a ventilation device for constructing a ventilation ridge on the ridge part of a roof.

Background Art

[0002] FIG. 17 is a cross-sectional view showing a ventilation ridge using a conventional ventilation device disclosed in Patent Document 1.

[0003] The ventilation ridge m is provided in the ridge part of a gable-shaped roof y such as a gable roof having two inclined roof surfaces f, and is for ventilating the attic. In this conventional example, the ventilation ridge m is constructed by a ventilation device 100 installed so as to cover a ventilation opening g formed in the ridge part.

[0004] The ventilation device 100 includes a water-shedding cut member 110 protruding upward from an opening edge k of a ventilation opening g formed by cutting out a part of a roofing material j, a main body member 120 having an opening 121 facing the ventilation opening g, a ventilation member 130 attached to the upper surface of the main body member 120, a waterproof plate material (not shown) covering an edge part of the ventilation member 130, and a cover member 140 covering the upper surface of the main body member 120.

[0005] The water-shedding cut member 110 is a pair of members respectively arranged at opposite opening edges k in the direction along the ridge of the ventilation opening g, and thus has a gap between them in the construction state. Each water-shedding cut member 110 has a mounting part 111 fixed to the surface of a base material h, a water-cutting part 112 standing up from one end of the mounting part 111 and protruding upward above the ventilation opening g, and a water-stop material 113 attached to the upper end of the water-cutting part 112. The mounting part 111 and the water-cutting part 112 are made of a metal plate, have a form of a long object extending in the direction along the ridge, and the shape in a side view on the short side is substantially L-shaped.

[0006] The main body member 120 has an opening 121 in its center, a pair of flat sections 122 extending outward from the edge of the opening 121, a pair of hanging sections 123 extending downward from the outer edge of each flat section 122, and a flange section 124 extending outward from the lower end of each hanging section 123. The pair of flat sections 122 and the flange section 124 are formed on an inclined surface that follows the slope of the roof surface f. The main body member 120 is formed by press working of a metal sheet.

[0007] The ventilation member 130 has a rectangular cross-section, a rod-like shape extending along the ridge, and provides ventilation in the direction of the eaves and ridge. It is fixed to the flat portion 122 of the main body member 120 by a band body 131 made of a strip-shaped metal plate. The band body 131 has a nut member (not shown) on the upper portion 131a facing the upper surface of the ventilation member 130, into which a bolt 150 for attaching the cover member 140 is screwed. In addition, the flat portion 122 and the foot portion 131b fixed to the flat portion 122 have mounting holes through which a fastener 160 for fixing the main body member 120 to the roof surface f is inserted.

[0008] The waterproof plate material (not shown) is a pair of members arranged at each end edge of the ventilation member 130, and has a waterproof plate portion that covers the gap between the two ventilation members 130 and a base plate portion that is fixed to the flat portion 122 of the main body member 120 with rivets or the like.

[0009] The cover member 140 has a top plate portion 141 which includes two inclined surfaces that are joined at an angle approximately equal to the angle formed by a pair of flat portions 122 of the main body member 120, and hanging portions 142 that hang down from each edge of the top plate portion 141. Multiple through holes are formed in appropriate places on the top plate portion 141 for inserting bolts 150 that are screwed into nut members provided on the band body 131.

[0010] To construct a ventilated ridge m using this ventilation device 100, first, a portion of the underlayment h and roofing i is cut out at the ridge of the roof y to form a ventilation opening g. Then, a pair of flashing members 110 are attached to the roofing i at positions that sandwich the ventilation opening g using nails, screws, etc. Next, the roofing material j is installed so as to cover the attachment portion 111 of the flashing members 110. Subsequently, the main body member 120, which has the ventilation member 130 and waterproofing board material fixed to the upper surface of the flat portion 122 in advance, is attached. This involves placing a waterproof packing 170 below the mounting hole of the main body member 120 and driving fasteners 160 such as nails or screws into the roofing material with the waterproof packing 170 inserted through it. This fixes the main body member 120 on the roof surface f. Next, the cover member 140 is placed on top of the main body member 120, and the bolt 150, which is inserted through the through hole in the cover member 140, is screwed onto the nut member provided on the upper surface of the band body 131. This attaches the cover member 140 so that it covers the main body member 120.

[0011] In this configuration, the ventilation device 100 has a ventilation passage 180 formed between the top plate portion 141 of the cover member 140 and the main body member 120. This passage communicates with the ventilation opening g in the center, passes through the ventilation member 130, and opens to the outside air at both ends through vents 181 formed between the hanging portion 142 of the cover member 140 and the flange portion 124 of the main body member 120. Therefore, air rising from the ventilation opening g can pass through the ventilation member 130 and then be discharged to the outside air through the vents 181 at the ends of the ventilation passage 180. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] Japanese Patent Publication No. 2011-69138 [Overview of the project] [Problems that the invention aims to solve]

[0013] In the conventional ventilation device 100 described in Patent Document 1, the fastener 160 that fixes the main body member 120 to the roof surface f has a structure that penetrates from the surface of the roofing material j to the underside of the base material h. Therefore, if the waterproof packing 170 interposed in the middle of the fastener 160 is defective, or if the waterproof packing deteriorates due to aging, there is a risk that rainwater, etc., may seep into the attic through the fastener 160.

[0014] The present invention was made to solve the above-mentioned problems and aims to provide a ventilation device that can reduce the possibility of water leakage in the roof. [Means for solving the problem]

[0015] To achieve the above objective, the invention described in claim 1 is a ventilation device installed to cover a ventilation opening formed in the ridge portion of a roof having two sloping roof surfaces, comprising a pair of support bodies fixed to positions on either side of the ventilation opening on the two roof surfaces and extending along the ridge, and at least two connecting pieces connecting the pair of support bodies at at least two locations separated in the longitudinal direction, wherein each support body has a fixed portion fixed to the roof surface and an upright portion rising from the eaves-side edge of the fixed portion, and the connecting piece is bent in a mountain shape in the center and the angle of this bend can be changed, comprising a base member, a main body member disposed on the base member and having a bottom plate portion having an opening facing the ventilation opening, and a pair of hanging portions hanging down from each of the opposing edges of the bottom plate portion and overlapping with the upright portion, and a cover member disposed above the main body member and having a top plate portion forming a ventilation passage between itself and the bottom plate portion, wherein the main body member is attached to the base member by fasteners that pass through the hanging portions and the upright portions when they are overlapped.

[0016] With this configuration, the central part of the connecting piece of the base member is aligned so that it is directly above the ridge, and a pair of support members are fixed to the roof surface at positions that sandwich the ventilation opening. The hanging part of the main body member is overlapped with the upright part of the base member, and the main body member is attached to the base member by passing the fastener through the hanging part and the upright part in this state. Next, the cover member is positioned and attached above the main body, so that a ventilation passage is formed between the bottom plate and the top plate, and a ventilated ridge is constructed.

[0017] The invention described in claim 2 is the configuration of the invention described in claim 1, wherein the support of the base member further has connecting portions extending from the upper edge of the upright portion toward the ridge at at least two locations separated in the longitudinal direction, and the connecting piece is fixed at both ends to the connecting portions.

[0018] In this configuration, the connecting piece and the support are connected at the connecting portion of the support of the base member.

[0019] The invention described in claim 3 is the configuration of the invention described in claim 1 or claim 2, further comprising: a pair of drainage members arranged on opposing opening edges in the direction along the ridge of the ventilation opening, each having a gap between them and a drainage portion that protrudes above the opening edge; and a pair of end members arranged on the end edges of the pair of drainage portions in the direction across the ridge, each forming a watertight surface that covers the gap between the pair of drainage portions, wherein the end members have a plate-shaped upper support piece, a pair of watertight pieces hanging down from the upper support piece and having a slit between them, and a pair of fixing pieces formed by bending from the lower end of each of the pair of watertight pieces, and the upper support piece is bent at a position corresponding to the slit so that the pair of watertight pieces are close to each other, so that a part of the watertight pieces overlaps and a watertight surface is formed.

[0020] With this configuration, a pair of water-draining members are arranged at the opposing opening edges in the direction along the building at the ventilation opening, and the water-draining part is projected upward from the opening edge. The upper support piece of the end member is bent according to the roof gradient, and a state is formed in which a part of the pair of water-blocking pieces overlap each other. Then, this pair of end members are arranged at the opposing edge parts in the direction crossing the building at the water-draining part of each water-draining member, and its fixing piece is fixed to the roof surface. The water-blocking piece of the end member forms a water-blocking surface covering the gap of the water-draining part of the water-draining member, and together with the water-draining part, constructs a waterproof wall structure rising from the ventilation opening.

[0021] The invention according to claim 4 further includes a water-stop material attached to the upper end of the water-draining part of the water-draining member and the upper surface of the upper support piece of the end member, and the water-stop material abuts against the lower surface of the bottom plate part of the main body member.

[0022] With this configuration, when a pair of water-draining members and a pair of end members are arranged at the opening edge of the ventilation opening and the main body member is arranged on the base member fixed to the roof surface, the water-stop materials attached to the water-draining members and the end members respectively abut against the lower surface of the bottom plate part of the main body member, closing the gap between the two.

[0023] The invention according to claim 5 further includes a ventilation member arranged between the main body member and the cover member and having a baffle plate part that allows ventilation in the eaves and gable direction and inhibits water flow.

[0024] With this configuration, ventilation in the eaves and gable direction is allowed and the inflow of water is blocked.

Effect of the Invention

[0025] According to the invention described in claim 1, the main body member is attached to the roof surface via the base member, and the fixture for fixing the main body member to the base member is configured to penetrate the upright portion and the hanging portion in the lateral direction. Therefore, unlike the prior art, the fixture does not penetrate the roofing material. As a result, the possibility of water leakage in the ventilation building is reduced. Since the base member has at least two connecting pieces that connect a pair of supports and can change the bending angle at the central portion, when the base member is arranged on the roof surface, the supports can be held on the roof surface in an optimal posture adapted to the roof gradient.

[0026] According to the invention described in claim 2, in addition to the effects of the invention described in claim 1, since the support and the connecting piece can be formed of separate members, the support can prioritize strength and the connecting piece can prioritize bendability. The connection strength between the support and the connecting piece is ensured, and the connection work is also facilitated.

[0027] According to the invention described in claim 3, in addition to the effects of the invention described in claim 1 or claim 2, by adjusting the bending angle of the upper support piece of the end member, each of the pair of fixing pieces can be appropriately aligned with the surface of the roofing material, and a reliable waterproof structure can be achieved.

[0028] According to the invention described in claim 4, in addition to the effects of the invention described in claim 3, even if water splashes up on the roof surface, the water entry into the ventilation opening can be blocked by the water drainage member and the water stop material of the end member.

[0029] According to the invention described in claim 5, in addition to the effects of the invention described in any one of claims 1 to 4, even if water splashes up on the roof surface, the water entry into the ventilation opening can be blocked by the baffle plate portion of the ventilation member.

Brief Description of the Drawings

[0030] [Figure 1] [[ID=--]] [Figure 2] It is a cross-sectional view showing the ventilation device shown in FIG. 1 disassembled into its component members. [Figure 3] Figure 1 shows a water drainage member used in the ventilation system, where (A) is a perspective view and (B) is a side view of the shorter side. [Figure 4] Figure 1 shows the form of the end member used in the ventilation device before use, where (A) is a front view, (B) is a side view, and (C) is a top view. [Figure 5] Figure 1 shows the end members used in the ventilation device, where (A) is a perspective view showing the form before use and (B) is a perspective view showing the form during use. [Figure 6] Figure 1 shows the base member used in the ventilation device, where (A) is a perspective view, (B) is a side view of the short side, and (C) is a magnified view of the drainage hole in the center of the support. [Figure 7] Figure 1 shows the main components used in the ventilation device, where (A) is a perspective view and (B) is a cross-sectional view of (A) along the X-X line. [Figure 8] Figure 1 shows a cover member used in the ventilation device, where (A) is a perspective view and (B) is a cross-sectional view of (A) along the Y-Y line. [Figure 9] This diagram shows the procedure for constructing a ventilated ridge using the ventilation device shown in Figure 1, and is a perspective view showing the preparation of the flashing member and end member. [Figure 10] This diagram shows the procedure for constructing a ventilated ridge using the ventilation device shown in Figure 1, and is a perspective view showing the installation of the flashing member and end member in accordance with the ventilation opening formed on the ridge of the roof. [Figure 11] Figure 1 is a diagram illustrating the procedure for constructing a ventilated ridge using the ventilation device, and is a perspective view showing the roofing material placed on top of the flashing member. [Figure 12] Figure 1 is a perspective view showing the procedure for constructing a ventilated ridge using the ventilation device, with the base member placed on top of the flashing member. [Figure 13] This diagram shows the procedure for constructing a ventilation ridge using the ventilation device shown in Figure 1, and is a perspective view showing the main body members placed on the base members. [Figure 14]This diagram shows the procedure for constructing a ventilation ridge using the ventilation device shown in Figure 1, and is a perspective view showing the cover member placed on top of the main member. [Figure 15] This is a cross-sectional view showing the overall structure of a ventilation ridge constructed using a ventilation device according to a different embodiment of the present invention. [Figure 16] Figure 15 is a cross-sectional view showing the ventilation device disassembled into its constituent components. [Figure 17] This is a cross-sectional view showing the structure of a ventilation ridge constructed using a conventional ventilation device described in Patent Document 1. [Modes for carrying out the invention]

[0031] <Ventilation system configuration> Figure 1 is a cross-sectional view showing the overall structure of a ventilation ridge constructed using a ventilation device according to an embodiment of the present invention; Figure 2 is a cross-sectional view showing the ventilation device shown in Figure 1 disassembled into its constituent members; Figure 3 shows a water drainage member used in the ventilation device; Figure 4 shows the form of the end member used in the ventilation device before use; Figure 5(A) is a perspective view showing the form of the end member used in the ventilation device before use, and (B) is a perspective view showing the form during use; Figure 6 shows a base member used in the ventilation device; Figure 7 shows a main body member used in the ventilation device; and Figure 8 shows a cover member used in the ventilation device.

[0032] The ventilation device 1 in this example is installed to cover a ventilation opening G formed in the ridge portion of a roof Y having two sloping roof surfaces F, thereby constructing a ventilation ridge M. It comprises a pair of flashing members 10 arranged on each of the opposing opening edges K along the ridge direction of the ventilation opening G, a pair of end members 20 arranged on each of the end edges of the pair of flashing members 10 in the direction crossing the ridge, a base member 30 arranged above the flashing members 10, a main body member 40 attached on the base member 30, and a cover member 60 attached on the main body member 40.

[0033] Referring to Figure 3, the drainage flashing member 10 has the form of a long object and includes a rectangular attachment portion 11, a flashing portion 12 that rises from the end of the attachment portion 11 that will be on the ridge side during construction, an upper piece portion 13 that is folded back parallel to the attachment portion 11 from the upper end of the flashing portion 12, and a rod-shaped waterproofing material 14 attached to the upper surface of the upper piece portion 13. A center marking line C2 for positioning is provided at the center of the attachment portion 11.

[0034] Referring to Figures 4 and 5, the end member 20 is positioned at the short edge of the drainage member 10 and comprises a plate-shaped upper support piece 21, a pair of waterproofing pieces 22 hanging down from the upper support piece 21 and having a slit 23 between them, a pair of fixing pieces 24 formed by bending from the lower ends of each of the pair of waterproofing pieces 22, and a water-stopping material 25 attached to the upper surface of the upper support piece 21. The upper support piece 21 is bendable at positions corresponding to the slit 23, and by bending the upper support piece 21 so that the pair of waterproofing pieces 22a and 22b are close to each other, parts of the waterproofing pieces 22a and 22b overlap to form a waterproof surface S.

[0035] Referring to Figure 6, the base member 30 includes a pair of elongated support members 31 and at least two connecting pieces 32 that connect the pair of support members 31. Each support member 31 has an elongated rectangular fixing portion 31a, an upright portion 31b that rises from the edge of the fixing portion 31a that becomes the eaves side during construction, and connecting portions 31c that extend from the upper edge at both ends of the upright portion 31b in the same direction as the fixing portion 31a. Therefore, the cross-section of the support member 31 perpendicular to the longitudinal direction is approximately U-shaped at the edge and L-shaped for most of the rest. The fixing portion 31a is provided with through holes, burrings, and other fastener guide portions 31d that indicate the positions for driving in fasteners to fix the base member 30 to the roof surface. The position of the fastener guide portions 31d is set based on the arrangement of the rafters that make up the roof. In addition, waterproofing materials 34 and 35 are provided on the upper surface near the ridge and on the lower surface near the eaves, respectively. Furthermore, a central drain hole 31e, which also serves as a positioning marker, is formed in the center of the upright portion 31b.

[0036] The connecting piece 32 is made of a strip-shaped member and is bent into a V-shape at its central portion 32a, and the angle of this bend can be changed. Both ends 32b are fixed to the connecting portions 31c of each of the pair of support members 31 with fixing means 33 such as screws or rivets. The connecting piece 32 is designed to be parallel to the fixing portion 31a of the support member 31. Therefore, by adjusting the bend angle of the central portion 32a of the connecting piece 32, the inclination of the fixing portion 31a of the support member 31 can be made to match the slope of the roof on which the base member 30 is installed.

[0037] In this example, the connecting piece 32 is connected to the connecting portion 31c of the support 31, ensuring sufficient connection strength between the two and facilitating the connection process. Furthermore, since the support 31 and the connecting piece 32 are made of separate materials, a thicker material can be used for the support 31 to increase its strength, while a thinner material can be used for the connecting piece 32 to provide flexibility. Specifically, for example, the thickness of the material forming the support 31 could be 0.8 mm, and the thickness of the material forming the connecting piece 32 could be 0.35 mm. Moreover, the support 31 and the connecting piece 32 may be made of different materials.

[0038] Referring to Figure 7, the main body member 40 comprises a bottom plate portion 41 having an opening 41a in the center facing the ventilation opening and positioned to cover the base member 30, a pair of rod-shaped ventilation members 45 positioned on the upper surface of the bottom plate portion 41, sandwiching the opening 41a, waterproof plate materials 47 positioned at each of the longitudinal ends of the ventilation members 45, and a water-repellent member 48 positioned between the opening 41a and the ventilation members 45.

[0039] The base plate portion 41 is bent into a mountain shape at its top portion 41c and has two inclined surfaces 41b that follow the slope of the roof. Furthermore, the base plate portion 41 has a pair of hanging portions 42 extending downward from each of its opposing edges along its longitudinal direction, and a flange portion 43 extending outward from the lower end of each hanging portion 42 parallel to the inclined surface 41b. Each hanging portion 42 is provided with mounting holes 44 at appropriate locations for inserting fasteners such as screws or bolts for attaching the main body member 40 to the base member 30. In addition, at least one of the two hanging portions 42 has a central opening 49 formed at its center to serve as a positioning marker.

[0040] The ventilation member 45 is a rod-shaped body with a rectangular cross-section, and has ventilation in the eaves-ridge direction (direction perpendicular to the longitudinal direction). Its structure is the same as that used in Patent Document 1. Specifically, the ventilation member 45 is made by laminating multiple synthetic resin sheets having numerous bumps and grooves, and integrating them by heat fusion to form numerous connecting passages between the ridge-side end face and the eaves-side end face. By designing the opening dimensions of the connecting passages so that gases can easily flow but liquids cannot, the ventilation member 45 enables ventilation of the attic through the ventilation openings while also providing a waterproof function to prevent rainwater from entering.

[0041] The means for fixing the ventilation member 45 to the bottom plate portion 41 is the same as in Patent Document 1, and a band body 46 formed by bending a strip-shaped metal plate into a convex shape is used. That is, the ventilation member 45 is placed at a predetermined position on the bottom plate portion 41, and the band body 46 is placed over it from above, and the lower end foot portion 46a of the band body 46 that extends to the side of the ventilation member 45 is fixed to the bottom plate portion 41 with a rivet or the like, thereby attaching the ventilation member 45. In addition, the upper surface portion 46b of the band body 46 that faces the upper surface of the ventilation member 45 is provided with a nut member 50 into which a bolt for attaching a cover member, which will be described later, is screwed.

[0042] The waterproof plate material 47 is a pair of members positioned at both ends in the longitudinal direction of the ventilation member 45, and has a waterproof plate portion 47a that covers the gap between the two ventilation members 45, and a base plate portion 47b that is fixed to the bottom plate portion 41 with rivets or the like. In this example, the waterproof plate portion 47a is made up of two plate-shaped members that are partially overlapped. This prevents gaps from forming in the waterproof plate portion 47a by changing the overlapping state of the two waterproof plate portions 47a in accordance with the change in the bending angle of the bottom plate portion 41.

[0043] The water-repellent member 48 is an L-shaped elongated object positioned along the longitudinal edge of the opening a in the bottom plate portion 41, and consists of a mounting portion positioned on the bottom plate portion 41 between the opening 41a and the ventilation member 45, and a water-repellent portion that rises from one end of the mounting portion. In this example, the mounting portion of the water-repellent member 48 is also attached to the bottom plate portion 41 together with the band body 46 that fixes the ventilation member 45.

[0044] Furthermore, a water-stopping material 51 is placed on the upper surface of the bottom plate portion 41 at the position between the opening 41a and the waterproof plate material 47. In addition, a water-stopping material 52 is placed on the back surface of the bottom plate portion 41 along the longitudinal edge of the opening 41a.

[0045] Referring to Figure 8, the cover member 60 has a top plate portion 61 including two inclined surfaces 61a having a slope that matches the shape of the bottom plate portion 41 of the main body member 40, a long-side hanging portion 62 hanging down from the edge along the longitudinal direction of the top plate portion 61, and a short-side hanging portion 63 hanging down from the edge along the short direction of the top plate portion 61. Multiple through holes 64 are formed in appropriate places on the top plate portion 61 for inserting bolts that are screwed into nut members 50 provided on the band body 46.

[0046] An insulating material 70 is provided on the underside of the top plate portion 61 of the cover member 60 to prevent condensation. Furthermore, on the underside of the top plate portion 61, water-stopping materials 71 and 72 are provided at positions corresponding to the upper ends of the ventilation member 45 and the waterproof plate material 47, respectively, when the cover member 60 is placed on the main body member 40.

[0047] The main parts of the drainage cut-off member 10, base member 30, main body member 40, and cover member 60 that constitute the ventilation device 1 are formed by bending metal plates. For example, galvalume steel sheet (registered trademark) or galvalume color steel sheet, which is galvalume steel sheet with a coating, can be used as the metal plate. The waterproofing material is formed from a material that is elastically deformable and impermeable to water, and for example, plastic foam such as EPDM (ethylene propylene diene rubber) can be used.

[0048] <Construction procedure for ventilation ridges> The procedure for constructing a ventilated ridge on the roof using the ventilation system configured as described above is explained below.

[0049] Figures 9 to 14 illustrate the procedure for constructing a ventilated ridge using the ventilation device shown in Figure 1. Figure 9 is a perspective view showing the preparation of the flashing member and end member. Figure 10 is a perspective view showing the flashing member and end member attached to the ventilation opening formed on the ridge of the roof. Figure 11 is a perspective view showing the roofing material placed on the flashing member. Figure 12 is a perspective view showing the base member placed on the flashing member. Figure 13 is a perspective view showing the main body member placed on the base member. Figure 14 is a perspective view showing the cover member placed on the main body member.

[0050] Referring to Figure 9, first, at the ridge, a portion of the underlayment H and roofing I is cut by a predetermined dimension before the roofing material is attached to form a ventilation opening G. Then, a first center marking line C1 is marked on the surface of the roofing I to indicate the center position of the ventilation opening G in the longitudinal direction (along the ridge). The long side dimension of the ventilation opening G formed in the roof Y is made to match the length dimension of the flashing member 10 used. The short side dimension of the ventilation opening G is set based on the dimensions of the main body member 40.

[0051] Next, the prepared flashing members 10 and end members 20 are attached around the ventilation opening G. Each pair of flashing members 10 is positioned on the roofing I with the flashing portion 12 aligned along the opening edge of the ventilation opening G, and the center mark line C2 marked on the surface of the attachment portion 11 aligned with the first center marking line C1. Then, screws or nails (not shown) are driven in to fix them to the base material H. Each pair of end members 20 has its upper support piece 21 bent to match the slope of the surface of the roofing I, and the two waterproof pieces 22a and 22b are partially overlapped to form a waterproof surface S. In this state, they are positioned to abut both ends of the flashing members 10 in the longitudinal direction and fixed with screws or nails.

[0052] Referring to Figure 10, once the drainage member 10 and end member 20 are attached around the ventilation opening G, sealant or the like is applied to the overlapping portion of the watertight pieces 22a and 22b of the end member 20 to ensure waterproofing.

[0053] Referring to Figure 11, once a waterproof wall structure consisting of a flashing member 10 and an end member 20 has been constructed around the ventilation opening G, the underlayment L and roofing material J are laid on the surface of the roofing I. At this time, a portion of the underlayment L and roofing material J are cut out to match the flashing member 10 and the end member 20. On the surface of the roofing material J, a second center marking line C3 is drawn, aligned with the center marking line C2 marked on the flashing member 10. Note that the underlayment may be omitted depending on the situation.

[0054] Referring to Figure 12, the base member 30 is then attached to the surface of the roofing material J so that the water drainage member 10 is sandwiched between the pair of support members 31. At this time, the base member 30 is positioned by aligning the central drainage hole 31e of the base member 30 with the second center marking line C3 of the roofing material J. The bending angle of the connecting piece 32 is also adjusted to match the slope of the roof surface F. After that, fasteners N1 such as coarse thread screws or nails are driven into the fastener guide portion 31d of the fixing portion 31a to fix the base member 30 to the roofing material J.

[0055] Referring to Figure 13, the main body member 40 is then attached using the base member 30 fixed to the roofing material J. Specifically, the main body member 40 is placed over the upper surface of the base member 30, and the central opening 49 of the hanging portion 42 is aligned with the second center marking line C3 of the roofing material J to position it. The bending angle of the bottom plate portion 41 is also adjusted to match the slope of the roof surface F. After that, fasteners N2 such as sheet metal screws are screwed into the mounting holes 44 and the central opening 49 provided in the hanging portion 42. Furthermore, a coaming material or the like is applied to the overlapping portion of the two waterproof plate portions 47a of the waterproof plate material 47 to ensure waterproofing. As a result of this work, the hanging portion 42 of the main body member 40 and the upright portion 31b of the base member 30 are joined by the fasteners N2, and the main body member 40 is fixed to the roof surface F via the base member 30.

[0056] Referring to Figure 14, finally, the cover member 60 is attached to the main body member 40. That is, the cover member 60 is placed on top of the main body member 40, the bending angle of the top plate portion 61 is adjusted to match the slope of the roof surface F, and the through hole 64 is aligned with the nut member 50 provided on the band body 46 of the main body member 40. Then, the fastener N3 such as a bolt is screwed into the nut member 50 through the through hole 64, completing the attachment of the cover member 60 and constructing the ventilated ridge. At this time, a part of the bottom plate portion 41 of the main body member 40 is exposed and not covered by the cover member 60, but this exposed portion can be used when constructing the ridge covering member (not shown).

[0057] Referring again to Figure 1, the ventilation ridge M constructed as described above is positioned so that the central part 32a of the connecting piece 32 of the base member 30 is directly above the ridge, and a pair of support members 31 are fixed to the roof surface F, sandwiching the ventilation opening G. With the hanging portion 42 of the main body member 40 overlapping the upright portion 31b of the base member 30, the main body member 40 is attached to the base member 30 by passing the fastener N2 through the hanging portion 42 and the upright portion 31b. The direction in which the fastener N2 is passed through the upright portion 31b and the hanging portion 42 is horizontal, so the fastener does not penetrate the roofing material as in the conventional method. Therefore, the risk of water leakage in the ventilation ridge M can be reduced. However, the fasteners N1, such as coarse thread screws, that attach the base member 30 to the roof surface F are designed to penetrate the underlayment L, the flashing member 10, the roofing felt I, and the base material H from the surface of the roofing material J to reach the rafters P, and there is a risk that the waterproofing performance may be reduced at this penetration point. However, in this example, the top of the fasteners N1 are covered with the bottom plate portion 41 of the main body member 40, and a waterproofing material 35 is placed between the roofing material J and the fixing portion 31a of the base member 30, so that water does not reach the penetration point by the fasteners N1, thereby eliminating the risk of water leakage at this penetration point.

[0058] Furthermore, the ventilation opening G is surrounded by a water-draining member 10 and an end member 20, and the waterproofing materials 14 and 25 attached to the upper part of the water-draining member 10 and the end member 20 are in contact with the lower surface of the bottom plate portion 41 of the main body member 40. This stabilizes the posture of the main body member 40 and prevents gaps from forming between the main body member 40 and the water-draining member 10 and the end member 20. Consequently, there is no risk of rainwater entering the ventilation opening G from the outside beyond the water-draining member 10 and the end member 20.

[0059] In this ventilated ridge M, a ventilation passage R is formed between the bottom plate portion 41 of the main body member 40 and the top plate portion 61 of the cover member 60, through which the ventilation member 45 passes. This ventilation passage R communicates with the ventilation opening G via an opening 41a in the central part corresponding to the ridge position, and communicates with the outside air between the flange portion 43 and the long-side hanging portion 62 at both ends on the eaves side. Furthermore, the ventilation member 45 allows for the flow of gas in the eaves-ridge direction. Therefore, the ventilated ridge M performs a ventilation function that discharges air from the attic through the ventilation opening G and the ventilation passage R to the outside air. In addition, the insulation material 70 placed on the underside of the top plate portion 61 of the cover member 60 prevents condensation from occurring on the underside of the top plate portion 61 due to the temperature difference between the attic and the outside air.

[0060] The ventilation member 45, positioned in the middle of the ventilation passage R, is designed so that the opening dimensions of its passage allow for easy gas flow but make it difficult for liquid flow. Furthermore, the space between the upper surface of the band body 46 that secures the ventilation member 45 and the lower surface of the top plate portion 61 of the cover member 60 is sealed by a waterproofing material 71, and the space between the waterproofing plate material 47 and the top plate portion 61 is sealed by a waterproofing material 72. Therefore, even if wind and rain blow up the roof Y and rainwater enters the ventilation passage R from the end side of the cover member 60, the movement of the rainwater is blocked at the position of the ventilation member 45, so there is no risk of rainwater entering the ventilation opening G. Even if rainwater does pass through the ventilation member 45, the water-repellent member 48 can prevent it from entering the ventilation opening G.

[0061] In short, the ventilation device 1 in this example provides a ventilation ridge M that ensures reliable ventilation of the attic without the risk of water leakage in the roof or rainwater entering the ventilation openings.

[0062] Figure 15 is a cross-sectional view showing the overall structure of a ventilation ridge constructed using a ventilation device according to a different embodiment of the present invention, and Figure 16 is a cross-sectional view showing the ventilation device shown in Figure 15 disassembled into its constituent components.

[0063] The basic configuration and construction procedure of the ventilation device in this embodiment are the same as those of the embodiment described above, so the differences will be explained in detail. In this example, the member attached to the upper surface of the main body member 40 to form an air passage R between it and the cover member 60 has been changed to a so-called baffle-structured ventilation member 80. This ventilation member 80 is made of a metal plate or the like, has dimensions such that its length in the longitudinal direction is equal to that of the ventilation member 45 in the embodiment described above, and has openings X1 to X3 between substantially parallel upper parts 81a, 81b and lower parts 83a, 83b, and has a plurality of baffle plate parts 82a to 82d that intersect with the eaves and ridge direction. In this example, the three baffle plate parts 82a, 82c, and 82d are formed perpendicular to the upper parts 81a, 81b and lower parts 83a, 83b, and one baffle plate part 82b is formed at an angle. However, all may be at right angles or at an angle, and the ratio of those that are at right angles to those that are at an angle may be changed. Furthermore, the number of baffle plates may be increased or decreased.

[0064] Of the openings X1 to X3 formed in the baffle plate sections 82a to 82d, openings X1 and X3 are positioned upwards, while opening X2 is positioned downwards. This configuration allows for airflow in the eaves-ridge direction through openings X1 to X3, while preventing water from flowing into the ventilation device 1 from the outside. In other words, by having baffle plate sections 82a to 82d with openings X1 to X3, the ventilation member 80 can perform its ventilation function without allowing water blown up from the roof surface to enter the ventilation opening G.

[0065] The ventilation member 80 in this example can be manufactured by forming openings X1 to X3 in advance on a metal sheet such as a galvalume steel sheet and then bending it. It can also be manufactured using other methods, such as aluminum extrusion molding.

[0066] When assembling the ventilation device 1, the top plate portion 61 of the cover member 60 is fastened to the upper surface portion 81b of the ventilation member 80 with fasteners N4 such as screws. The lower portions 83a and 83b are pre-fixed to the bottom plate portion 41 of the main body member 40 by brazing or adhesive.

[0067] In this example, the main body member 40 has also been modified as follows. First, a relatively short second water-repellent portion 41d is formed at the intersection of the bottom plate portion 41 and the hanging portion 42 of the main body member 40. In addition, a third water-repellent portion 43a, which protrudes in a mountain shape, is formed at the eaves-side edge of the flange portion 43. Furthermore, the height dimension of the water-repellent member 48 formed along the ridge-side edge of the bottom plate portion 41 is set to be larger than in the above embodiment. In this example, the water-repellent structure has been strengthened, so even if rainwater is blown up the roof during a storm, it is possible to reliably prevent rainwater from reaching the ventilation opening G through the ventilation member 80 of the ventilation device 1.

[0068] In the above embodiment, the connecting piece that connects the pair of supports in the base member is connected at both ends of the supports, but it may also be connected at two other separate locations besides the ends. Furthermore, there may be three or more connecting pieces. Also, the supports and the connecting pieces may be integrally formed from the same material.

[0069] Furthermore, in each of the embodiments described above, the components of the ventilation device are configured symmetrically with respect to the ventilation opening, but it is also possible to configure them asymmetrically with respect to the ventilation opening, or to use a structure composed of only one group of components.

[0070] The nut member into which the bolt for attaching the cover member is screwed may be provided on a part other than the band body that secures the ventilation member.

[0071] Some of the components that make up the ventilation system may be made of synthetic resin.

[0072] The plan view shape of the ventilation device may be other than a rectangle. [Explanation of Symbols]

[0073] 1…Ventilation system 10…Water drainage member 11…Attachment part 12...Drainage section 13...Top piece 14…Waterproofing material 20...End member 21...Top support piece 22...Waterproofing piece 22a...Waterproofing piece 22b...Waterproofing piece 23... Gap 24…Fixed piece 25...Waterproofing material 30…Base component 31...Support 31a...Fixed part 31b…Standing part 31c...Connection part 31d... Fixture guide part 31e...Central drain hole 32…Connection piece 32a...Central part 32b...Both ends 33...Fixing means 34...Waterproofing material 35...Waterproofing material 40…Main body components 41...Bottom plate part 41a...Aperture 41b…Slope surface 41c...top 41d...Second water return section 42...Drooping part 43…Flange section 43a...Third water return section 44…Mounting holes 45... Ventilation components 46... Band body 46a...foot 46b...Top part 47…Waterproof board material 47a...Waterproof plate part 47b... Circuit board section 48...Water-repellent component 49...Central opening 50... Nut component 51...Waterproofing material 52...Waterproofing material 60... Cover component 61... Top panel 61a…Slope surface 62...Long side hanging part 63...Short side hanging part 64…Through hole 70…Insulation 71...Waterproofing material 72...Waterproofing material 80... Ventilation components 81a, 81b...Top part 82a~82d... Obstruction board section 83a, 83b...bottom part 100... Ventilation system 110...Water drainage member 111…Attachment part 112...Drainage section 113...Waterproofing material 120...Main body components 121...Aperture 122...Flat area 123...Drooping part 124...Flange section 130... Ventilation components 131... Band body 131a...Top part 131b…foot 140... Cover component 141... Top panel 142...Drooping part 150... Volts 160…Fixing tool 170... Waterproof gasket 180... Ventilation channel 181...Ventilation opening C1...First center marking line C2... Center marker line C3...Second center marking line F...Roof surface G…Ventilation vent H... Substrate material I...Roofing J...Roofing material K...Opening edge L…Underlayment material M…Ventilation building N1…Fixing tool N2…Fixing tool N3…Fixing tool N4…Fixing tool P...Rafter Q...ridgepole R... Ventilation channel S...Waterproof surface X1~X3…Aperture Y...roof f...roof surface g…Ventilation vent h...underlayment i...roofing j...roofing materials k...Opening edge m…Ventilation building y...roof In each figure, the same reference numeral indicates the same or corresponding part.

Claims

1. A ventilation device installed to cover a ventilation opening formed on the ridge of a roof, a base member fixed to a roof surface, a main body member disposed on the base member, and a cover member disposed above the main body member and forming an air passage between the cover member and the main body member; The base member includes a support having a fixing portion that extends along the ridge of the roof and is fixed to the roof surface at a position closer to the eaves than the ventilation opening, and an upright portion that stands up from the eaves side edge of the fixing portion, The main body member has a bottom plate portion having an opening facing the ventilation opening, and a hanging portion hanging down from an eave side edge of the bottom plate portion and overlapping with the upright portion, The main body member is attached to the base member by a fastener that penetrates the hanging portion of the main body member and the standing portion of the base member while the hanging portion of the main body member and the standing portion of the base member are overlapped with each other. Ventilation equipment.

2. A ventilation device that is installed to cover a ventilation opening formed in a ridge portion of a roof having two inclined roof surfaces, a base member including a pair of supports fixed to the two roof surfaces at positions sandwiching the ventilation opening and extending along the ridge, and at least two connecting pieces connecting the pair of supports at at least two locations spaced apart in the longitudinal direction, each of the supports having a fixed portion fixed to the roof surface and an upright portion standing from the eaves-side edge of the fixed portion, the connecting pieces bending in a mountain shape at the center and the bending angle being changeable; a main body member disposed on the base member, the main body member having a bottom plate portion having an opening facing the ventilation opening, and a pair of hanging portions hanging from opposite end edges of the bottom plate portion and overlapping the upright portions; a cover member disposed above the main body member and having a top plate portion that forms an air passage between the cover member and the bottom plate portion; The main body member is attached to the base member by a fastener that penetrates the hanging portion and the standing portion while they are overlapped.

3. 3. The ventilation device according to claim 2, wherein the support of the base member further has connecting portions extending from the upper edge of the upright portion toward the ridge at at least two locations spaced apart in the longitudinal direction, and both ends of the connecting pieces are fixed to the connecting portions.

4. A pair of drainage members are arranged on opposite opening edge portions in a direction along the ridge of the ventilation opening, and have drainage portions that protrude above the opening edge portions with a gap between them; and a pair of end members arranged at the respective end edges of the pair of water breakers in a direction crossing the ridge, and forming a water-blocking surface covering the gap between the pair of water breakers. The end member has a plate-shaped upper support piece, a pair of water-blocking pieces hanging down from the upper support piece and having a gap between them, and a pair of fixing pieces formed by bending the lower ends of the pair of water-blocking pieces, A ventilation device as described in claim 2 or claim 3, wherein the upper support piece is bent at a position corresponding to the slit so that the pair of water-blocking pieces approach each other, causing portions of the water-blocking pieces to overlap and form the water-blocking surface.

5. The drainage member further includes a water-stopping material attached to an upper end of the drainage portion of the drainage member and to an upper surface of the upper support piece of the end member, The ventilation device according to claim 4 , wherein the water-stopping material abuts against the lower surface of the bottom plate portion of the main body member.

6. The ventilation device according to any one of claims 1 to 5, further comprising a ventilation member disposed between the main body member and the cover member and having a baffle portion that allows air to pass in the eaves-ridge direction and prevents water from passing through.

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