JP3062620B2 - Ventilated roof panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As shown in FIG. 3, as a conventional ventilated roof panel B, a base plate 13 and a decorative panel 14 are respectively attached to the upper and lower surfaces of a rafter 12 arranged in parallel with a space therebetween, and a heat insulating material. 15 is loaded between the rafters 12 with a gap 16 opened below the base plate 13 (see JP-A-5-230953). When such a ventilated roof panel B is installed on a hut (not shown), the outside air heated on the ground surface naturally flows from the eaves side and passes through the gap 16 as shown by arrows c and d in FIG. Therefore, even when the roof 17 is covered with a roof tile and the entire top surface of the base plate 13 is covered, the rafter 12 and the base plate 13 are discharged.
Can eliminate the absorbed moisture.

[0003]

However, the above-described ventilated roof panel B is provided with the decorative surface material 14 in consideration of the appearance when looked up from an attic or the like. Since the rafter 12 is structured to be sandwiched between the base plate 13 and the decorative surface material 14, removing the decorative surface material 14 significantly reduces the rigidity. For this reason, even when installing in a building without an attic or the like, the decorative surface material 14 must be attached to the lower surface of the rafter 12, and there is a problem that the construction cost is unnecessarily increased. Further, there is a problem that the thickness dimension of the entire panel is increased by the thickness of the decorative surface material 14, and if the rafter 12 and the heat insulating material 14 are made thinner in order to solve this problem, there arises a problem that heat insulation is impaired.

An object of the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a ventilation roof panel which is thin and has excellent heat insulating properties and flexural rigidity.

[0005]

According to a first aspect of the present invention, there is provided a ventilated roof panel, comprising: a grid frame having a plurality of connecting bars spanned between parallel spaced rafters; And a heat insulating material loaded inside the lattice frame with a gap opened below the ground plate,
A portion corresponding to the gap joint bars of the lattice frame, forming a vent hole to conduct outside air in the longitudinal direction of the rafters, and the sheathing
In the gap between the plate and the heat insulating material, a number of protrusions are
And a heat insulating sheet protruding at an interval .

[0006]

[0007] ventilation roof panel according to claim 2 wherein the the upper surface of the above-mentioned sheathing roof board, in which adhered waterproof sheet.

[0008]

According to the ventilated roof panel of the first aspect, since the grid frame is formed by bridging a plurality of connecting bars between the rafters arranged in parallel at intervals, the face material and the like are provided on the lower surface of the grid frame. The desired rigidity can be ensured without sticking. In addition, at the part corresponding to the gap between the base plate of the joint and the heat insulating material, a ventilation port that conducts outside air in the longitudinal direction of the rafter is formed, so the outside air that naturally flows in from the eaves side,
It can be discharged to the ridge side without being interrupted by the connecting pier.

According to the ventilated roof panel of the first aspect, the heat insulating sheet is formed by projecting a large number of convex portions at intervals from each other over the entire surface in the gap between the base plate and the heat insulating material. In addition, the outside air and the heat insulating material can be shut off without impairing the air permeability. In addition, 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 ventilation roof panel of the second aspect,
Since the waterproof sheet is stuck on the upper surface of the field board, it is possible to promote the unitization of building members and to omit the work involved in waterproofing the roof portion at the building site.

[0011]

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

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 is formed by projecting a large number of columnar projections 8a at intervals from one another over the entire surface. The convex portion 8 a is hollow and has an upper end surface in contact with 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 for communicating the gap 6 with the outside. The reason why the opening 10 is made wider in the lateral direction is to prevent the flow path of the outside air from being completely blocked by the bundle columns even when the bundle columns are 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 naturally flowing from the eaves side can be discharged to the ridge side through the ventilation holes 7 and the gaps 5, so that the grid frame 3 and the base plate 4 absorb moisture. Can be eliminated. In addition, since 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 rafters and the like can be attached to the hut when constructing. The construction cost and the construction period can be saved because there is no need to fix the construction. Further, since no decorative surface material or the like is attached to the lower surface of the rafter 1, the thickness of the entire panel can be reduced without reducing the thickness of the heat insulating material 6. For this reason, there is an advantage that the degree of freedom in design is wide even when the height of the building 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 at the time of construction, the heat insulating material 8 can be used. 6 does not enter the back of the lattice frame 3. Moreover, since the outside air and the heat insulating material 6 can be shut off by the heat insulating sheet 8, it is possible to apply a material such as glass wool through which the outside air easily blows through, 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 to omit the work involved in waterproofing the roof portion at the building site.

The heat insulating material 6 and the heat insulating sheet 8 may be made of, for example, rock wool, vinyl chloride, paper, urethane, urethane foam, or styrene foam. do not have to.

[0017]

According to the ventilated roof panel of the first aspect, the outside air naturally flowing from the eaves side is discharged to the ridge side through the ventilation holes and the gaps, so that the moisture absorbed by the lattice frame and the base plate is reduced. 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, and since the rafter is integrated with the ground board, it is necessary to fix the rafter to the purlin at the time of construction. Construction costs can be reduced. Moreover, since the decorative surface material is not attached to the lower surface of the rafter unlike the conventional example, the thickness of the entire panel can be reduced without reducing the thickness of the heat insulating material. For this reason, there is an advantage that the degree of freedom in design is wide even when the height of the building is restricted by laws and regulations.

Further, according to the ventilation roof panel, the convex portion of the insulation sheeting is backup material between the sheathing roof board and the heat insulating member, even if the lower surface of the heat insulating material is pressed by mistake at the time of construction, insulation Does not enter the back of the lattice frame. Moreover, since the outside air and the above-mentioned heat insulating material can be shut off by the heat insulating sheet material, it is also possible to apply a material that allows the outside air to easily blow through, such as glass wool, as the heat insulating material, and the material of the heat insulating material is limited. There is an advantage that it is not done.

According to the ventilation roof panel of the second aspect ,
The unitization of building members can be promoted, and the work involved in waterproofing the roof part at the building site can be omitted.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of a heat insulating sheet constituting the ventilation roof panel according to one 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 Splice bar 3 Grid frame 4 Ground plate 5 Gap 6 Insulation material 7 Ventilation hole 8 Insulation sheet 11 Waterproof sheet

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E04B 1/70 E04B 7/02 511 E04D 13/16 E04D 3/00-3/40

Claims (2)

(57) [Claims] 1. A grid frame formed by spanning a plurality of connecting bars between rafters arranged in parallel with a gap, a field board attached to the upper surface of the grid frame, and a gap provided below the field board. And a heat insulating material loaded inside the lattice frame, wherein a ventilation hole for conducting outside air in a longitudinal direction of the rafter is provided at a portion corresponding to the gap of the joint bar of the lattice frame. Form and
In the gap between the base plate and the heat insulating material, a number of convex
A ventilated roof panel characterized in that a heat insulating sheet protruding at intervals from one another is fitted . 2. The ventilated roof panel according to claim 1 , wherein a waterproof sheet is attached to an upper surface of the field board.