JPH0781374B2 - Roof waterproof ventilation structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof ventilation ridge structure for a roof, and more particularly, in a roof structure finished with a roofing material having a relatively small heat capacity such as a metal roof tile In order to prevent heat from being transmitted to the indoor space due to transmission to the ridge, waterproof ventilation is provided with ventilation means that leads from the eaves to the ridge, and at the opening of the ventilation means in the ridge, a waterproof means that prevents infiltration of rainwater. It is related to the ridge structure.

[0002]

2. Description of the Related Art As a roofing material applied to the roof structure of industrialized houses, there is a metal roof tile made by pressing a thin metal plate. This metal roof tile can be mass-produced and is easy to transport and handle. It is becoming widely used because of its ability to be colored and designed freely.

However, since the metal roof tiles have a small heat capacity and a high heat transfer property, in an environment where the solar radiation is strong such as in summer, hot air from the strong solar radiation is easily transmitted from the metal roof tiles to the indoor space below, and the indoor space becomes hot. There is a drawback that it will end up. If you install thick insulation on the bottom side of the metal roof, you can reduce the heat transfer to the indoor space, but if you do so, the structure of the roof will be complicated, the manufacturing effort will increase, and the cost will be expensive. The problem arises. In addition, if a thick heat insulating material is provided, the heat accumulated in the heat insulating material having a large heat capacity or the heat accumulated in the room will not be easily dissipated from the roof to the outside space even if the outside air temperature decreases, and the metal roof tile Due to the temperature difference between the inside and the inside, there is a drawback that dew condensation easily occurs on the attic.

As a method of preventing heat transfer from the metal roof tile to the indoor space without using a thick heat insulating material, it has been considered to provide an air passage between the metal roof tile and the base plate, which leads from the eaves to the ridge. The air in the ventilation passage heated by the heat transfer from the metal roof tiles becomes lighter, so it rises in the ventilation passage according to the inclination of the roof and is discharged from the building to the external space. When heated air rises in the air passage, the unheated air is sucked in from the eaves instead, so new air is constantly supplied from the eaves to the ridge. . As a result, the heat of the metal roof tiles is carried away by the air that naturally circulates in the air passage, and does not reach the attic or the indoor space below the air passage.

[0005]

However, in the conventional heat insulating structure of the roof by the ventilation passage as described above, in a region or season where the solar radiation is particularly strong, sufficient heat insulating performance cannot be exerted and the indoor space becomes hot. There was a problem of becoming. This is because, in the conventional structure, the air passage formed between the metal roof tile and the base plate is narrow, and the amount of air flowing is small, so the heat generation of the metal roof tile is not quickly removed, and hot air is transmitted to the indoor space side. It will end up.

[0006] Usually, as the metal roof tile, a plate material having corrugated irregularities formed in a direction orthogonal to the inclination of the roof, that is, in the lateral direction, is struck with a nail or the like on a flat base plate for construction. In addition, steps may be provided at regular intervals in the inclination direction of the roof in order to express the same appearance as the original roof tile. An air passage leading from the eaves to the ridge is formed between the metal roof made of such corrugated sheet material or stepped corrugated sheet material and the flat floor plate. Therefore, the ventilation path between the metal roof tile and the base plate is only as high as the mountain portion of the metal roof tile, and moreover, the metal roof tile and the base plate are in contact with each other in the valley portion of the metal roof tile, and the space between them is narrow. The roads are narrowed and cut off.

[0007] If the air passage formed between the metal roof tile and the base plate is narrowed or interrupted, the flow of air from the eaves to the ridge is obstructed, and when the heat generated by the metal roof tile increases, this heat is generated. It cannot be carried away quickly. Such a problem is also a problem when a roofing material made of a material having a relatively small heat capacity or a thin material is used in addition to the metal roof tile.

Further, as described above, when the ventilation passage is provided between the metal roof tile and the base plate, the ventilation passage is open to the external space in the ridge portion, so that rainwater is introduced into the ventilation passage from this opening portion. If it penetrates and accumulates, there is a problem of damaging the internal structure such as the ground plate. Therefore, there are many restrictions on the structure and arrangement of the ventilation path. Therefore, an object of the present invention is to provide a ventilation path between the roofing material and the base plate as described above, improve the ventilation structure of the roof to prevent heat transfer from the roofing material to the indoor space, and provide strong sunlight. In addition, the heat transfer from the heated roofing material to the indoor space can be blocked well, and the indoor space can be maintained in a comfortable environment. In addition, the intrusion of rainwater into the ventilation passage in the roof ridge structure is good. It is to provide a waterproof ventilation ridge structure of the roof that can be prevented.

[0009]

[Means for Solving the Problems] A waterproof ventilation ridge structure for a roof according to the present invention which solves the above problems is a sloping roof, which extends from the eaves to the ridge between the upper surface of the roof plate and the roofing material. A first air passage that leads from the ridge to the external space is provided, and a second air passage that extends from the attic on the lower surface side of the roof plate to the ridge and joins the first air passage is provided. In the roof structure, the ridge portion of the sloping roof is covered with a ridge-wrapping member having a downwardly U-shaped cross section, and on the floor plate inside the ridge-wrapping member, from the direction toward the ridge through the first air passage, Fold back toward the eaves on the upper side,
A partition member whose cross section is bent in a lateral J shape is provided, and the ridge-wrapping member is supported by the upper end of this J-shaped partition member. The J-shaped partition member is sandwiched between the partition member and the second ventilation member on the side opposite to the first ventilation path. The air passage is guided to the second air passage through the air hole formed through the J-shaped partition member, and the second air passage is joined to the first air passage.
A partition member that folds back toward the ridge on the lower side and toward the eaves on the lower side is provided, and a ventilation path folded back toward the eaves is provided between the side end of the ridge wrapping member and the roofing material. From outside to the outside space.

The present invention is applied to a sloping roof having a certain degree of slope from the eaves to the ridge. The greater the slope of the roof, the easier it is for air to circulate through the air passage. However, according to the present invention, air can be circulated and heat can be dissipated better than in the conventional structure, and therefore, the present invention can be suitably applied to a roof having a relatively small inclination. Specifically, for example, if there is an inclination of about 1/10, the effect of the present invention will be satisfactorily exhibited.
Functions such as drainage of rainwater can be performed well.

As the structure of the sloping roof, a base plate made of plywood or a wood board is laid over the basic structure of the sloping roof constructed of beams or rafters made of wood or steel, and the surface of the base plate. The roofing material is laid in the. A roofing material may be laid on the surface of the base plate through a waterproof sheet or the like. There is an attic space between the ceiling surface of the interior structure and the floor board.

The roofing material, which is made of a plate material having a relatively small heat capacity such as a metal thin plate like the above-mentioned metal roof tile, has a good heat radiation property, and has a good heat dissipation property in an indoor space or a roof structure heated in the daytime. The heat can be quickly dissipated from the roof surface, lowering the temperature. Further, the metal roof tile is easy to manufacture and handle and has excellent appearance. The roofing material needs to have a concavo-convex structure such that a space leading from the eaves to the ridge is formed between the roofing material and the field board when laid on the surface of the field board. Specifically, a roofing material made of a corrugated plate material may be used, or a spacer may be sandwiched between the roofing material and the base plate.

With the roofing material laid on the surface of the roof plate, the space formed between the roofing material and the roof plate serves as the first ventilation passage. The first ventilation passage is open to the outside space at both ends of the eaves and the ridge. A drainage channel for flowing rainwater that has entered between the field board and the roofing material can be provided along the inclination direction of the roof between the field board and the roofing material. The ventilation passage can be used as a drainage passage, or a gutter-shaped drainage passage made of a metal mold or the like may be provided between the base plate and the roofing material.

A panel material in which a roofing material is attached to a field board having a rectangular shape of a certain area is manufactured in advance by factory production or the like, and the roof panel material is arranged and constructed on a roof basic structure. By doing so, the labor and cost of construction can be saved. In this case, since it is easy for rainwater or the like to infiltrate from the joint of the roof panel material, it is preferable to provide the drainage channel as described above.

Next, a second ventilation path is provided in the attic on the back side of the base plate, that is, between the base plate and the ceiling surface of the room. Although the upper surface of the second ventilation passage is inclined along the inclination of the base plate, the lower surface may be flat along the interior ceiling surface, or if the structural material of the lower surface is inclined. , It may be in a state of being inclined accordingly. When the second ventilation path is blocked or largely diverted by the beam or wall material inside the roof, it is preferable to provide a ventilation hole or a ventilation groove in the beam or wall material.

The second ventilation path is open to the outside space at the eaves or communicates with the interior space through the interior ceiling surface. When the second ventilation path leads to the external space at the eaves,
By taking in the outside air, it is possible to carry away the heat transferred from the side plate satisfactorily. The opening of the second ventilation path and the opening of the first ventilation path in the eaves may be provided as separate structures, or the first and second ventilation paths are connected to the same opening at the tip. I don't mind. On the ridge side, the second ventilation passage merges with the first ventilation passage and leads to the external space. The position where the second air passage merges with the first air passage is preferably near the ridge. When the second ventilation passage communicates with the indoor space, heat in the indoor space can be released and the indoor space can be ventilated. The second ventilation passage
It goes without saying that it may communicate with both the external space and the indoor space.

A wrapping member is attached to the ridge of the sloping roof. The wing wrapping member is made of a metal plate or the like, and covers the ridge-side end of the sloping roof to improve appearance and prevent rainwater from entering from the end. The basic shape and structure of the building wrapping member may be the same as that of a normal pitched roof. Inside the wing wrapping member, a partitioning member having a J-shaped cross section is provided on the field plate, and the first ventilation passage is folded back from the direction toward the ridge to the direction toward the eaves on the upper side. ing. This J-shaped partition member is manufactured by pressing a thin metal plate or molding a synthetic resin. The upper end of the J-shaped partition member supports the ridge-wrapping member. That is, the ridge wrapping member is supported on the field board through the J-shaped partition member.

The second air passage is guided to the side opposite to the first air passage with the J-shaped partition member sandwiched therebetween. That is, J
Since the first ventilation passage is arranged on the eaves side of the character-shaped partition member, the second ventilation passage is arranged on the ridge side of the J-shaped partition member. A ventilation hole is formed through the J-shaped partition member, and the second ventilation passage is joined to the first ventilation passage through the ventilation hole.

The shape and size of the ventilation holes, the arrangement interval, etc.
It is set in consideration of the ventilation amount in the first and second ventilation passages, or the mechanical strength of the J-shaped partition member that supports the ridge-wrapping member. In addition, the ventilation hole is provided relatively above the J-shaped partition member so that even if rainwater or the like enters the eaves side of the building wrapping member, it cannot penetrate from the ventilation hole to the second ventilation path side. Is preferred. As the shape of the vent hole, any shape such as a circle or a rectangle can be adopted. The location of the ventilation hole is preferably a location where the suction action by the dynamic pressure of the airflow flowing through the first ventilation passage works efficiently, and a location where this suction action is unlikely to occur is not preferred. A suitable partition member may be arranged in the first ventilation passage to control the suction action of the air flow.

As described above, the combined air passage obtained by merging the air flow of the first air passage with the air flow of the second air passage has the J-shaped partition member by a partition member made of a plate material or the like. The first ventilation passage, that is, the combined distribution air passage controlled in the direction toward the eaves, is folded back from the direction toward the eaves, toward the ridge below the eaves, and toward the eaves below the eaves. The material and layout of the partition member
It is preferable that the rainwater does not easily enter the ventilation passage from the external space and the ventilation in the ventilation passage is prevented as much as possible.

A part of the air passage may be made of a roofing material. For example, the corrugated roofing material is extended to the inside of the wing wrapping member, a so-called door member is provided at the upper end of the roofing member, and this door member is integrally connected to the partition member inside the wing wrapping member. You can leave it. Such a face door member can favorably prevent rainwater that enters along the upper surface of the roofing material from entering the back side of the ventilation path.

Finally, as described above, the ventilation passages folded back in the direction toward the eaves are communicated with the external space through the gap between the side edge of the wrapping member and the roofing material. The gap between the side edge of the building wrapping member and the roofing material is preferably narrow to prevent the entry of rainwater, but it is preferable to have a wide gap for good ventilation, so the size of the gap should be considered considering both conditions. Should be set. In addition, it is preferable to set the shape and size of the gap so that creatures such as birds and insects or foreign matter flying in the air do not enter. A mesh or a grid fence may be provided in the gap. When the upper surface of the roofing material has unevenness such as a wavy shape, it is preferable to make the lower edge of the side end of the ridge wrapping member uneven according to the shape of the upper surface of the roofing material. The gap between the side edge of the ridge wrapping member and the roofing material does not have to be continuous at the same distance over the entire length of the roof. For example, there is a gap in the concave portion of the roofing material, but there may be no gap in the convex portion of the roofing material.

A drainage channel can be provided inside the ridge wrapping member on the field plate along the longitudinal direction of the ridge wrapping member. If this drainage channel is connected to the drainage channel along the above-mentioned inclination direction of the roof, even if rainwater enters the inside of the ridge wrapping member, this rainwater can be drained well. INDUSTRIAL APPLICABILITY The roof heat insulating structure according to the present invention is favorably applied to industrially produced single-family homes and relatively low-rise condominiums, but any building having the above-mentioned problems can be used. Can be applied to the roof structure in.

[0024]

[Operation] If an air passage is provided between the upper surface of the base plate of the sloping roof and the roofing material, the air flowing through the air passage from the eaves to the ridge will remove the hot air generated by the roofing material. It is known. However, since the ventilation path formed between the roofboard and roofing material is narrow, the amount of air flowing through the ventilation path is small, the amount of heat taken from the roofing material is small, and the hot air that was not taken by the air is Is transmitted to the indoor space side.

Therefore, if the air passage between the upper surface of the field board and the roofing material, that is, the second air path that joins the first air path is provided in the attic on the lower surface side of the field board, this Air flow to the ridge side also occurs in the second ventilation path. This air flow is generated by the following actions. First,
Heat is transferred from the base plate to the air in the second air passage, and the air in the second air passage warms and rises. Therefore, the air rises from inside the second air passage to the upper ridge side. , Second
Airflow occurs in the ventilation passages of the. However, since the volume of the second ventilation passage is large and the amount of air contained therein is large, the temperature rise of the internal air is small and the air flow accompanying the temperature rise is not so large. With such a weak air flow alone, it is difficult to efficiently remove the hot air that has propagated from the base plate to the indoor space. That is, a good heat insulating function cannot be achieved only by providing the second ventilation passage.

However, in the above-described first ventilation passage, the air in a relatively narrow space is directly heated by the strong hot air generated by the roofing material, and the ventilation passage is inclined from the eaves to the ridge. As a result, the air flow from the eaves through the ridge to the outside space is quite strong. When the second air passage is joined to the first air passage, the air in the second air passage is sucked into the strong air flow in the first air passage. As a result, a strong airflow is generated in the second ventilation passage due to the airflow due to the temperature rise of the internal air and the suction action of the airflow in the first ventilation passage. In this way, if a strong airflow is generated in the second ventilation passage as well, it is possible to satisfactorily dissipate the heat transmitted from the base plate to the air in the second ventilation passage to the external space together with the airflow. . Therefore, the heat transferred to the indoor space is significantly reduced.

As described above, according to the present invention, a strong air flow can be generated in both the air passages by the synergistic action of the first air passage and the second air passage, and as a result, the roofing material can be produced. The generated hot air can be efficiently taken away in two stages by the airflows of both ventilation paths, and the transfer of hot air to the indoor space can be satisfactorily blocked. In addition, when air flows through the second ventilation passage, it is possible to prevent dew condensation from occurring in the attic space, and it is also possible to maintain a good environment in the attic space. This is because, especially when roofing materials such as metal roof tiles are used, the roofing material is rapidly cooled at night or in cold weather, so there is a concern that dew condensation may occur on the back surface of the field board due to the temperature difference between the two sides of the field board. However, if the air circulates in the back surface space of the base plate, it is possible to prevent the above-described dew condensation.

If the second ventilation passage communicates with the outside space at the eaves, it is possible to take in fresh outside air and quickly carry away the heat transmitted from the base plate. If the second air passage communicates with the indoor space, the indoor space can be ventilated. Further, in the present invention, the ridge is provided with a ridge wrapping member, and the first and second air passages are provided inside the ridge wrapping member by a J-shaped partition member and other partition members from the direction toward the ridge. The direction toward the eaves on the upper side, and from the direction toward the eaves to the direction on the ridge side on the lower side is changed multiple times, and then from the gap between the side edge of the wrapping member and the roofing material to the external space. It is open. Therefore, even if rainwater tries to enter the interior of the ventilation passage from the opening to the external space, the rainwater cannot penetrate to the inside of the ventilation passage beyond the plurality of folded portions. As a result, it becomes possible to reliably prevent the intrusion of rainwater without obstructing the air flow in the ventilation passage.

Further, since the ridge wrapping member is supported by the upper end of the J-shaped partition member attached to the field board, the ridge wrapping member is surely supported. Since the wing wrapping member is provided at the apex portion of the roof, there is a possibility that wind and rain or scattered objects may collide with the wrapping member, and a large external force may be received locally or locally. When the ridge wrapping member is deformed or moved by such an external force, the above-mentioned complicatedly folded air passage provided inside the ridge wrapping member becomes clogged or narrowed. Therefore, by fixing the building wrapping member on a strong base plate through the J-shaped partition member, the building wrapping member can be reliably prevented from being deformed or moved, and the function of the air passage can be exhibited well. You can

Further, with the J-shaped partition member sandwiched, the first
The second air passage is guided to the side opposite to the air passage, and the second air passage is joined to the first air passage through the air hole formed through the J-shaped partition member. The first air passage and the second air passage can be reliably separated from each other to prevent the air flow on the first air passage side from entering the second air passage side. Since a high-temperature air stream heated by the roofing material flows through the first ventilation passage, if this high-temperature air flow flows toward the second ventilation passage, the temperature in the attic space or the indoor space rises. I will end up. Therefore, it is necessary to separate the first air passage and the second air passage by the J-shaped partition member. In addition, the dynamic pressure of the air flow that flows along the wall surface of the J-shaped partition member causes the ventilation hole penetrating the wall surface to
It is possible to favorably generate the action of sucking the air on the second ventilation passage side, and it is possible to significantly increase the air flow in the second ventilation passage.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the roof structure in the ridge part and the eaves part in FIG. As shown in each drawing, a base plate 20 made of plywood or the like is laid on a basic structural member 10 of a roof made of a shaped steel material or the like. The roof basic structural member 10 and the base plate 20 have a relatively gentle slope (for example, 1/1
It has a slope of about 0).

On the upper surface of the base plate 20, a metal tile 30 made of a pressed metal thin plate, that is, a roofing material is attached and fixed by nailing it. Metal roof tile 30
Has a wavy undulation formed from the front side to the back side of the drawing sheet, and the metal tile 30 is in contact with the base plate 20 in the wavy valley portion shown in the cross section in the drawing, In the corrugated mountain portion, a ventilation space 32 continuing from the eaves to the ridge is formed between the metal tile 30 and the base plate 20. Further, the metal roof tile 30 has stepped portions 34 formed at regular intervals in the roof inclination direction, and has a so-called roof tile appearance.

As shown in FIG. 2, the eaves tip portion of the metal roof tile 30 is arranged in a gutter 40 attached to the eaves tip so as to project further than the tip of the base plate 20, and the metal roof tile 30 and the roof tile. The gap of the base plate 20 is open to the external space in the gutter 40. With this structure, it is possible to prevent rainwater and foreign matter from entering the ventilation space 32. On the lower surface side of the base plate 20, the roof structural member 10 is connected to the ceiling member 50 and further connected to the wall member 60. The eaves ceiling member 70 is attached from the outer surface of the wall member 60 to the eaves of the roof structural member 10. An attic space 80 is formed between the eaves ceiling member 70, the wall member 60, the ceiling member 50, and the base plate 20. On the eaves side, the attic space 80 is open to the external space through a ventilation hole 74 formed through the lower surface of the covering member 72 that covers the tip of the eaves ceiling member 70. Further, on the ridge side, the attic space 80 has a ventilation hole 12 formed through the structural member 10 of the roof, and
It communicates upward from a gap provided between the left and right field boards 20, 20.

The eaves ceiling member 70 has the lower surface thereof finished with a ceramic plate 72 or the like, and has a good appearance when the eaves portion is looked up from below. Instead of using the eaves ceiling member 70, the attic space 80 may start from the upper end portion of the wall member 60.
As shown in FIG. 1, a ridge-wrapping member 90 made of a thin metal plate or the like is attached to a ridge portion where left and right inclined roofs are connected. The ridge wrapping member 90 has a flat U-shape with a downward cross section, and is attached and fixed so as to straddle the left and right metal roof tiles 30, 30.

A substantially J-shaped partition member 92, which is produced by pressing a metal plate, is attached to the upper surface of the field board 20 inside the ridge wrapping member 90. The left and right J-shaped partition members 92 are attached back to back with each other, and a gap connecting to the attic space 80 is provided therebetween. As will be described in detail with reference to FIG. 3, the J-shaped partition member 92 is a horizontal mounting piece 9 mounted on the upper surface of the field board.
20, a vertical piece 921 rising from the end of the horizontal mounting piece 920, an inclined piece 923 bent obliquely inward at the upper end of the vertical piece 921, and a horizontal support piece 924 extending horizontally in the tip thereof. There is.

The horizontal support piece 924 is in contact with the inner surface of the ridge wrapping member 90, supports the center of the ridge wrapping member 90 on the field board 20 via the J-shaped partition member 92, and supports the ridge wrapping member 90. Secures support. In this way, the horizontal piece 9
By supporting the wrapping member 90 with 24, the wrapping member 9
It is also effective for preventing 0 from being deformed and deteriorating the external appearance, and also for preventing the inner surface of the ridge wrapping member 90 from coming into contact with the inner partition member to block or narrow the air passage. Is.

The inclined piece 923 is provided with a large number of ventilation holes 922. The ventilation holes 922 are the space inside the ridge wrapping member 90, the side of the attic space 80, and the J-shaped partition member 92.
The space on the side of the eaves of is connected. The metal roof tiles 30 are arranged inside the ridge wrapping member 90 to a portion just before the J-shaped partition member 92. The gap formed between the metal roof tile 30 and the base plate 20 has a J-shaped partition member 92 at its tip.
Will be opened near. A door member 36 made of wood or the like is attached to the upper end surface of the metal tile 30 to partition a space on the upper eave side of the metal tile 30 and a space on the J-shaped partition member 92 side. The door member 36 is
It is formed in a wavy shape that matches the wavy shape of the upper surface of the metal roof 30.

A partition member 94 having a substantially square cross section is attached to the upper part of the door member 36. The √-shaped partition member 94 has the eaves side protruding outward from the door member 36,
After being bent upward in the middle, the tip end is bent obliquely downward to form a V-shaped protrusion 942. The V-shaped projecting portion 942 has a function of smoothly flowing air and blocking raindrops entering from below. The upper end of the V-shaped projecting portion 942 is in a state in which a small gap is formed between the upper end of the V-shaped protruding portion 942 and the lower surface of the ridge wrapping member 90, and air can flow therethrough. √ Of the partition member 94,
On the J-shaped partition member 92 side, after slightly projecting from the face door member 36, the J-shaped partition member 92 side is bent upward at a right angle to project shortly.

On the side surface of the ridge wrapping member 90, the lower end has an end surface member 902 having a shape along the corrugation of the upper surface of the metal roof 30.
Is installed, and there is a certain narrow gap between the end face member 902 and the upper surface of the metal roof 30. Ventilation is performed from this gap, and rain and foreign matter are covered by the wrapping member 90.
I try not to get inside. Inside the end surface member 902, an L-shaped partition member 904 made of a mold material bent at a right angle is attached. The horizontal tip of the L-shaped partition member 904 is arranged below the tip of the strip-shaped partition member 94. The L-shaped partition member 904 has a function of blocking splashes of rainwater that has entered beyond the end surface member 902.

The operation of the roof ventilation structure will be described. When the metallic tile 30 is heated by being irradiated with solar heat, the heat is transferred to the air existing in the ventilation space 32 between the metallic tile 30 and the base plate 20, and the temperature of the air rises. Since the heated air becomes lighter and tries to rise, the air moves from the eaves to the ridge along the inclination of the ventilation space 32.

The air that has moved to the ridge side enters the inside of the ridge wrapping member 90 as described in detail in FIG.
And the J-shaped partition member 92 are moved upward, and the space between the lower surface of the ridge wrapping member 90 and the √-shaped partition member 94 is moved in a shape folded back to the eaves side. The air that has moved obliquely upward along the V-shaped protrusion 942 of the √-shaped partition member 94 flows downward from the tip of the V-shaped protrusion 942,
The L-shaped partition member 9 is inserted under the V-shaped protrusion 942.
After moving to the ridge side along 04, L-shaped partition member 90
It is folded back from the tip of 4 to the lower surface side, and is further discharged from the gap between the end surface member 902 and the metal roof 30 toward the eaves side to the external space.

Ventilation space 3 between the metal roof 30 and the base plate 20
As the air existing in 2 moves to the ridge side and is discharged to the external space, new air is sucked from the external space from the tip of the metal roof tile 30 to the ventilation space 32 on the eaves side. . The sucked air receives heat from the metal roof tile 30 and moves to the ridge side as described above. In this way, air circulates from the ventilation space 32 through the ventilation passage that passes through the inner space of the ridge wrapping member 90, that is, the first ventilation passage, and the heat of the metal roof tile 30 is taken away by the circulating air. Become. However, since the ventilation space 32 does not have such a large volume, the amount of air that flows is not sufficient, and the heat of the metal roof tile 30 cannot be completely removed, and a part of the heat is generated by the base plate 2.
It reaches 0.

When the heat is transferred to the base plate 20, this heat warms the air existing in the attic space 80 on the back surface side of the base plate 20. When the air in the attic space 80 is warmed, this air also rises and moves from the eaves side to the ridge side along the inclination of the rear surface of the bottom plate 20. The air passes through the ventilation holes 12 of the roof structural member 10, rises in the clearance between the left and right base plates 20 and the clearances between the left and right J-shaped partition members 92, 92, passes through the ventilation holes 922, and reaches the above-mentioned first position. It will merge with the air flowing through the air passage. The flow after merging with the air flowing through the first ventilation passage is as described above, and is discharged from the side surface of the ridge wrapping member 90 to the external space.

As the air in the attic space 80 is discharged to the external space on the ridge side, new air is sucked from the external space through the ventilation holes 74 of the covering member 72 on the eaves side. Therefore, even in the attic space 80, air flows from the eaves to the ridge, and this air takes away the heat transmitted from the base plate 20. The air passage extending from the attic space 80 to the inside of the ridge wrapping member 90 functions as the second air passage.

At the location where the first ventilation passage consisting of the ventilation space 32 and the second ventilation passage consisting of the attic space 80 meet, the first ventilation passage flowing along the inner wall surface of the J-shaped partition member 92 is joined. Since a relatively strong air flow in the ventilation path has an effect of sucking the air on the second ventilation path side through the ventilation hole 922, the flow of air on the second ventilation path side is promoted.

When rainwater is splashed on the roof or foreign matter is blown off, the ventilation space 32 is opened inside the gutter 40 and the attic space 80 is opened by the ventilation hole 74 under the eaves at the eaves. , Rainwater will not enter from this eaves part. Further, on the ridge side, as described above, the number of layers by the end surface member 902, the L-shaped partition member 904, the √-shaped partition member 94, the face door member 36, and the J-shaped partition member 92, which are provided on the ridge wrapping member 90, is increased. Since the partition structures are provided, there is no concern that rainwater or the like will enter the interior of the ventilation path or the attic space 80 beyond these partition structures.

[0047]

According to the above-described heat insulating structure for a roof according to the present invention, the first ventilation passage formed between the roofing material and the roof plate and the attic on the lower surface side of the roof plate are formed. By providing a second ventilation path that is formed and merging the second ventilation path with the first ventilation path, the heat generated in the roofing material can be reduced.
The airflows flowing through the respective ventilation paths can efficiently remove the airflow, and can effectively prevent the heat transfer to the indoor space.

As a result, even if a roofing material having a small heat capacity and high heat conductivity, such as a metal roof tile, is used, the indoor space does not become hot and a comfortable living environment can be provided. Moreover, the inside of the building wrapping member in which each air passage is opened to the outside space is
With the character-shaped partition member and other partition members, the first and second air passages are folded back several times from the upward direction to the eaves side, and from the eaves side to the ridge side, and then the side end and roof of the ridge wrapping member. Since the gap is opened to the outside of the eaves through the gap in the roofing material, even if rainwater enters the ventilation passage from the outside space, the ventilation passage with the complicated structure as described above will be traced backwards. Until, rainwater etc. cannot infiltrate. Therefore, even if the ventilation structure for enhancing the heat insulating effect is provided, there is no fear that the waterproof performance is deteriorated. Furthermore, since the second ventilation passage circulates the air in the attic space, it is possible to favorably prevent the occurrence of dew condensation in the attic space, and it is possible to prevent the structural members from being damaged and the environment from being deteriorated due to dew condensation. .

Since the roofing material such as the above-mentioned metal tile is a material suitable for industrialized houses, such roofing materials can be favorably used. According to the present invention, the quality performance of industrialized houses is improved. It will also contribute to the expansion of industrialized housing applications.

[Brief description of drawings]

FIG. 1 is a sectional view of a ridge portion showing an embodiment of the present invention.

[Figure 2] Cross section of the eaves

FIG. 3 is an enlarged cross-sectional perspective view of the vicinity of the building wrapping member.

[Explanation of symbols]

 10 Roof Structural Member 20 Field Plate 30 Metal Tile 32 Ventilation Space 36 Face Door Member 80 Attic Space 90 Building Wrap Member 92 J-Shaped Partition Member 94 √-Shaped Partition Member 902 End Surface Member 904 L-Shaped Partition Member 922 Vent

Claims (1)

[Claims] 1. A sloping roof, wherein a first ventilation path leading from the eaves to the ridge and leading from the ridge to the external space is provided between the upper surface of the roof plate and the roofing material, and the roof plate of the roof plate is also provided. In a roof structure in which a second ventilation passage that joins the first ventilation passage is provided from the attic on the lower surface side to the ridge, the ridge portion of the sloping roof is a wrapping member having a downward U-shaped cross section. Covered, on the base plate inside the wing wrapping member,
The first ventilation passage is provided with a partition member that is folded back from the direction toward the ridge toward the eaves on the upper side thereof and has a J-shaped cross section in cross section. The ridge-wrap member is provided at the upper end of the J-shaped partition member. Support, sandwich the J-shaped partition member,
The second ventilation passage is guided to the side opposite to the first ventilation passage, and the second ventilation passage is joined to the first ventilation passage through the ventilation hole formed through the J-shaped partition member. , A ventilation passage that is provided with a partition member that folds this combined distribution airway from the direction toward the eaves toward the ridge below and further toward the eaves below A waterproof and ventilated ridge structure for the roof, characterized in that it is communicated with the outside space through the gap between the side edge of the wrapping member and the roofing material.