JPH08291600A - Ventilating roof panel - Google Patents

Abstract

PURPOSE: To improve heat insulating performance and deflective rigidity in a thin type. CONSTITUTION: A ventilating roof panel is provided with a lattice frame 3 formed by extending plural joining sash bars 2 between rafters 1 arranged at intervals in parallel to each other, sheathing plates 4 stuck to an upper surface of the lattice frame 3 and heat insulating materials 6 filled inside the lattice frame 3 by securing a clearance 5 under the sheathing plates 4. A part corresponding to the clearance 5 of the joining sash bars 2 is notched, and ventilating ports 7 to introduce outside air are formed in the lengthwise direction of the rafters 1. Therefore, since outside air naturally flowed in from the eaves edge side can be discharged to the ridge side through the ventilating ports 7 and the clearance 5, the lattice frame 3 and the sheathing plates 4 can remove moisture absorbed humidity. Since a decorative face material or the like is not installed on under surfaces of the rafters 1, the whole panel can be thinned without reducing a thickness dimension of the heat insulating materials 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilated roof panel installed on the roof of a building.

[0002]

2. Description of the Related Art As shown in FIG. 3, as a ventilated roof panel B of a conventional example, a base plate 13 and a decorative surface material 14 are attached to the upper and lower surfaces of rafters 12 which are arranged in parallel at intervals, and a heat insulating material is also applied. There is one in which 15 is loaded between the rafters 12 with a gap 16 opened below the field board 13 (see Japanese Patent Laid-Open No. 5-230953). When such a ventilated roof panel B is installed on a shed group (not shown), as shown by arrows c and d in FIG. 4, outside air heated on the surface of the ground naturally flows from the eaves side and passes through the gap 16. Therefore, even if the roof tile 17 is covered and the entire upper surface of the field board 13 is covered, the rafters 12 and the field board 13 are discharged.
It is possible to eliminate the moisture that has absorbed.

[0003]

However, in the above-mentioned ventilated roof panel B, the decorative surface material 14 is provided in consideration of the appearance when looking up from the attic or the like, but as described above. Since the rafter 12 is structured to be sandwiched between the base plate 13 and the decorative surface material 14, when the decorative surface material 14 is removed, the rigidity is significantly reduced. Therefore, even when it is incorporated in a building that does not have an attic or the like, the decorative surface material 14 must be attached to the lower surface of the rafter 12, which causes a problem that the construction cost unnecessarily increases. Further, there is a problem that the thickness of the entire panel is increased by the thickness of the decorative surface material 14, and if the thickness of the rafter 12 and the heat insulating material 14 is reduced in order to solve this, there is a problem that the heat insulating property is impaired.

An object of the present invention was made in view of the above problems, and it is an object of the present invention to provide a ventilated roof panel which is thin and has excellent heat insulation and flexural rigidity.

[0005]

A ventilated roof panel according to claim 1 is a lattice frame formed by arranging a plurality of connecting bars between rafters arranged in parallel with each other at intervals, and attached to an upper surface of the lattice frame. And a heat insulating material that is loaded inside the grid frame with a gap below the ground plate, and is installed in the longitudinal direction of the rafter at the portion corresponding to the gap of the connecting bars of the grid frame. A ventilation port is formed for communicating the outside air.

In the ventilated roof panel according to the second aspect of the invention, a heat insulating sheet is inserted into the gap between the base plate and the heat insulating material, and a large number of convex portions are projected over the entire surface at intervals.

In the ventilated roof panel according to the third aspect, a waterproof sheet is attached to the upper surface of the above-mentioned base plate.

[0008]

According to the ventilated roof panel of the present invention, since a plurality of connecting bars are spanned between rafters arranged in parallel with each other at intervals, a lattice frame is constructed, so that the lower surface of the lattice frame is provided with a face material or the like. It is possible to secure desired rigidity without sticking. In addition, since a ventilation port that conducts outside air in the longitudinal direction of the rafter is formed in the portion corresponding to the gap between the base plate of the connecting beam and the heat insulating material, the outside air that naturally flows in from the eaves side,
It can be discharged to the ridge side without being blocked by the connecting rail.

According to the ventilated roof panel of claim 2,
A large number of convex portions are inserted into the gap between the base plate and the heat insulating material so that a large number of convex portions are spaced apart from each other and protrude from the heat insulating sheet, so that the air and the heat insulating material are blocked without impairing air permeability. be able to. Moreover, since the convex portion of the heat insulating sheet serves as a backup material between the heat insulating material and the base plate, it is possible to prevent the heat insulating material from entering the back of the lattice frame.

According to the ventilated roof panel of claim 3,
Since the waterproof sheet is attached to the upper surface of the base plate, it is possible to promote the unitization of the building members and eliminate the work involved in waterproofing the roof portion at the construction site.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a ventilated roof panel A according to an embodiment of the present invention has a lattice frame 3 formed by arranging a plurality of connecting bars 2 between rafters 1 which are arranged in parallel at intervals. And a heat insulating material 6 that is loaded inside the lattice frame 3 with a gap 5 opened below the field plate 4 and a gap between the joint bars 2. By notching a portion corresponding to 5, a ventilation port 7 for conducting outside air is formed in the longitudinal direction of the rafter 1.

A heat insulating sheet 8 is fitted in the gap 5 between the base plate 4 and the heat insulating material 6. As shown in FIG. 2, the heat insulating sheet 8 has a large number of columnar projections 8a which are spaced from each other and protrude over the entire surface. The convex portion 8a is hollow and has an upper end surface abutting on the lower surface of the base plate 4. The material of the heat insulating sheet 8 is not particularly limited, but a synthetic resin or the like having excellent durability and heat insulating properties is desirable in consideration of contact with the outside air.

At the end of the rafter 1 on the ridge side, a horizontal frame member 9 having a height smaller than that of the rafter 1 is provided, and between the horizontal frame member 9 and the lower surface of the field board 4. A slit-shaped opening 10 that communicates the gap 6 with the outside is formed. The reason why the opening 10 is wide in the lateral direction in this way is to prevent the passage of the outside air from being completely blocked by the bundle pillar or the like even when the bundle pillar or the like is located on the ridge side of the rafter 1. .

According to the ventilation roof panel A described above,
As shown by arrows a and b in FIG. 1, the outside air that naturally flows from the eaves side can be discharged to the ridge side through the ventilation port 7 and the gap 5, so that the moisture absorbed by the lattice frame 3 and the base plate 4 Can be eliminated. Further, the desired rigidity can be secured without attaching a decorative surface material or the like to the lower surface of the lattice frame 3, and since the rafter 1 and the base plate 4 are integrated, the rafter or the like on the roof truss at the time of construction. It is not necessary to fix the building, and it is possible to reduce the construction cost and construction period. Further, since a decorative surface material or the like is not attached to the lower surface of the rafter 1, it is possible to reduce the thickness of the entire panel without reducing the thickness dimension of the heat insulating material 6. Therefore, there is an advantage that the degree of freedom in design is wide even when the building height is restricted by laws and regulations.

Further, since the convex portion 8a of the heat insulating sheet 8 serves as a backup material between the base plate 4 and the heat insulating material 6, even if the lower surface of the heat insulating material 6 is erroneously pressed during construction, the heat insulating material 6 does not enter the back of the lattice frame 3. Moreover, since the heat insulating sheet 8 can block the outside air from the heat insulating material 6, it is also possible to use a material such as glass wool that easily blows the outside air, as the heat insulating material 6. Is not limited. Further, when the waterproof sheet 11 made of vinyl chloride or the like is attached to the upper surface of the base plate 4, it is possible to promote the unitization of the building members and omit the work involved in the waterproof treatment of the roof portion at the construction site.

Examples of the material of the heat insulating material 6 and the heat insulating sheet 8 include rock wool, vinyl chloride, paper, urethane, foamed urethane, and styrofoam. However, they are particularly limited as long as they have excellent heat insulating properties. do not have to.

[0017]

According to the ventilated roof panel of claim 1, since the outside air naturally flowing from the eaves side is discharged to the ridge side through the ventilation holes and the gaps, the moisture absorbed by the lattice frame and the base plate can be removed. Can be eliminated. In addition, the desired rigidity can be secured without attaching a decorative surface material or the like to the lower surface of the lattice frame, and since the rafter and the base plate are integrated, it is necessary to fix the rafter to the purlin at the time of construction. There is no need to save construction costs. Further, unlike the conventional example, since the decorative surface material is not attached to the lower surface of the rafter, it is possible to reduce the thickness of the entire panel without reducing the thickness of the heat insulating material. Therefore, there is an advantage that the degree of freedom in design is wide even when the building height is restricted by laws and regulations.

According to the ventilated roof panel of claim 2,
Since the convex portion of the heat insulating sheet serves as a backup material between the base plate and the heat insulating material, even if the lower surface of the heat insulating material is erroneously pressed during construction, the heat insulating material does not enter the back of the lattice frame.
Moreover, since the heat insulating sheet material can block the outside air from the heat insulating material, it is also possible to apply a material such as glass wool, which allows the outside air to easily blow through, as a heat insulating material. There is an advantage that it is not done.

According to the ventilated roof panel of claim 3,
The unitization of building members can be promoted, and the work involved in waterproofing the roof portion at the construction site can be omitted.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view of a ventilation roof panel according to an embodiment of the present invention.

FIG. 2 is a perspective view of a heat insulating sheet that constitutes a ventilated roof panel according to an embodiment of the present invention.

FIG. 3 is a cutaway perspective view of a conventional ventilated roof panel.

FIG. 4 is a cross-sectional view showing a construction example of a conventional ventilated roof panel.

[Explanation of symbols]

 A Ventilated roof panel 1 Rafter 2 Joint beam 3 Lattice frame 4 Field plate 5 Gap 6 Insulation material 7 Ventilation port 8 Insulation sheet 11 Waterproof sheet

Claims (3)

[Claims] 1. A lattice frame formed by arranging a plurality of connecting bars between rafters arranged in parallel at a distance, a field plate attached to the upper surface of the lattice frame, and a gap is formed below the field plate. A ventilation roof panel equipped with a heat insulating material loaded inside the lattice frame, wherein a ventilation port for conducting outside air in the longitudinal direction of the rafter is provided in a portion of the lattice frame corresponding to the gap. Ventilated roof panel characterized by being formed. 2. The ventilated roof panel according to claim 1, wherein a heat insulating sheet having a large number of convex portions projecting at intervals with respect to the entire surface is fitted into a gap between the base plate and the heat insulating material. 3. The ventilated roof panel according to claim 1, wherein a waterproof sheet is attached to the upper surface of the base plate.