JPH084220A - Heat insulating roof panel and connecting structure thereof - Google Patents

Abstract

PURPOSE:To improve the strength and watertightness in projecting manner by providing a cover for covering the upper face of the engaging projecting part of an adjoining panel on the upper part of an engaging recessed part, forming a gutter part for drainage on the lower part of the engaging recessed part, and providing an engaging projecting part placing part outside the gutter part. CONSTITUTION:A cover 10 is formed so as to be almost flush with the surface of a panel main body 5, influence of a wind is equalized to the whole surface of a heat insulating roof panel, wind and rain are prevented from concentrating into the engaged part between an engaging projecting part 6 and an engaging recessed part 7. Invasion of rain water from a gap 12 is prevented by the cover 10 and packing 16a, and if rain water leaks, the water is drained through a gutter part 11. Next packing 16b is interposed in a gap 12b below the gutter 11, and hence the rain water in the gutter 11 is prevented from leaking into a room. Further the engaging projecting part 6 is firmly supported with a placing part 13, against wind pressure or snowfall load from the upper side. Hereby, the cover, the gutter, the placing part, and the like are integrated so as to reduce the number of parts, and the strength, watertightness, and workability can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating roof panel constituting a roof of a building and a connecting structure thereof.

[0002]

2. Description of the Related Art Conventionally, roof panels having various shapes have been proposed from the viewpoint of roof design, and one example thereof is a roof panel 1'having an uneven surface or a flat surface. A roof panel 1 ″ is also known. First, as a roof panel 1 ′ having an uneven surface, for example, as shown in FIG. And a plurality of ribs 50 are provided so as to project, and the metal skins 3'and 4'along the front and back surfaces of the foam material 2 '.
It is known that each of these is coated. When constructing the roof panel 1 ', as shown in FIG. 15 (b), ribs 50 located at both widthwise end portions of the roof panel 1'are used as joints, and packing 16 is provided between the joints. ′
And the rib 50 of one of the joints is fixed to the roof base material via the fixing metal fittings 80, and the waterproof cap 8 having a mountain-shaped cross section is formed over the upper surfaces of both ribs 50, 50 of the joint.
1 was attached to prevent the intrusion of rainwater from the joint.

On the other hand, the roof panel 1 "having a flat surface is constituted by a face plate portion 91 which covers the surface of the heat insulating material 90 as shown in FIG.
Are arranged on the roof base material 92 with a gap therebetween, the upper surface of the heat insulating material 90 is covered with the roof panel 1 ″, and the suspenders 93 having the recessed grooves 93a are arranged in the gaps. Is fixed to the roof base material 92 with a fixture 94, an inner gutter 96 surrounding the concave groove 93a of the suspender 93 is fixed on the roofing material 95 of the roof base material 92, and an upper portion of the inner gutter 96 is covered with a joint cover 97. Was covered with.

[0004]

By the way, in the roof panel 1'with the ribs 50 shown in FIG. 15, the space between the ribs 50 functions as a drainage groove. Therefore, the roof panels 1'are provided at the tops of the ribs 50 at the joint portion of the roof panel 1 '. Although the structure is such that rainwater does not easily flow, the influence of the wind varies depending on each part of the roof panel 1'because of the uneven surface, and the influence of the wind becomes strong especially at the tops of the ribs 50. , Wind and rainwater strongly hit the tops of the ribs 50 at the joints of the roof panel 1 ', and rainwater is blown in along the arrow direction C from the hem of the ribs 50 to the back surface side of the waterproof cap 81. In this case,
There is a problem that rainwater permeates the packing 16 'to cause rain leakage. For this reason, conventionally, it was necessary to consider the direction of the wind when constructing the roof panel 1 ', or to consider a method of eliminating the gap between the waterproof cap 81 and the rib 50.

On the other hand, in the roof panel 1 "having a flat surface shown in FIG. 16, wind and rainwater flow over the entire roof surface under the same conditions, and the joint cover 97 is applied to the joint portion of the roof panel 1".
Since the inner gutter 96 and the roof gutter 96 are installed, there is no risk of rain leak unlike the roof panel 1 ″ of FIG. 15. However, when the roof panel 1 ″ shown in FIG. Since the heat insulating material 90 is attached and installed on the roof panel, and the roof panel 1 ″ is roofed on the heat insulating material 90, there is a problem in that it takes time and effort to install. 16 is necessary. In the roof panel 1 ″ shown in FIG. 16, since the suspension 93, the joint cover 97 and the inner gutter 96 which are separate from the roof panel 1 ″ are used, the number of parts is increased. There is a problem that the workability is further deteriorated.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to reliably prevent rainwater from entering the inside of a building without increasing the number of parts and to ensure watertightness. It is to provide a heat-insulating roof panel and its connecting structure capable of securing and improving workability. Another object is to provide a fitting portion between a fitting concave portion and a fitting convex portion. The purpose of the present invention is to provide a heat-insulating roof panel that can have a structure that is strong against the load from above, and yet another object is to provide a heat-insulating roof panel that can be easily fixed to the roof base material. To provide.

[0007]

In order to solve the above-mentioned problems, the heat insulating roof panel according to the present invention has two ends of a panel body 5 in which a heat insulating material 2 is filled between two metal skins 3 and 4. A fitting convex portion 6 and a fitting concave portion 7 are respectively formed, and a cover portion 10 that covers the upper surface 6a of the fitting convex portion 6 of the adjacent heat insulating roof panel 1 is provided on the upper portion of the fitting concave portion 7 so as to project. At the bottom of the mating recess 7, there is provided a gutter 11 which is located on the lower surface side of the mating projection 6 of the adjacent roof panel 1 and communicates with the gap 12 between the mating recess 7 and the mating projection 6. It is characterized in that a mounting portion 13 on which the fitting convex portion 6 is mounted is provided on the outer side B of 11.

Here, it is preferable that an inner mounting portion 13A on which the tip of the fitting convex portion 6 is mounted is formed on the inner side A of the trough portion 11 in the fitting concave portion 7. Further, it is preferable that a hooking recess 30 that is hooked on the inner surface side of the mounting portion 13 of the fitting recess 7 is formed on the lower surface 6b of the fitting projection 6. Further, it is preferable that the joint packing 6c is inserted on the surface side of the fitting portion between the fitting convex portion 6 and the fitting concave portion 7.

Further, in the connection structure of the heat insulating roof panel according to the present invention, the fitting convex portion 6 and the fitting concave portion are provided at both ends of the panel body 5 in which the heat insulating material 2 is filled between the two metal skins 3 and 4. 7 are formed respectively, and a cover portion 10 that covers the upper surface 6a of the fitting convex portion 6 of the adjacent heat insulating roof panel 1 is provided on the upper portion of the fitting concave portion 7 so as to be adjacent to the lower portion of the fitting concave portion 7. A trough portion 11 located on the lower surface side of the fitting convex portion 6 of the roof panel 1 and communicating with a gap 12 between the fitting concave portion 7 and the fitting convex portion 6 is provided, and the fitting convex portion is provided on the outer side B of the trough portion 11. The heat insulating roof panel 1 is configured by providing the mounting portion 13 on which the heat insulating roof panel 6 is placed, and the fitting convex portion 6 of the other heat insulating roof panel 1 is fitted into the fitting concave portion 7 of the adjacent one heat insulating roof panel 1. At the same time, the cover portion 10 of one roof panel 1 covers the upper surface 6a of the fitting convex portion 6 of the other roof panel 1, and the lower surface 6b of this fitting convex portion 6 is covered. The trough portion 11 is positioned on the mounting portion 13, the tip of the fitting convex portion 6 is mounted on the mounting portion 13 located outside the trough portion 11, and the gap 12 between the fitting concave portion 7 and the fitting convex portion 6 is placed. It is characterized in that the packing 16a is inserted in the.

[0010]

According to the present invention, the cover portion 10 for covering the upper surface 6a of the fitting convex portion 6 of the adjacent heat insulating roof panel 1 is provided on the upper portion of the fitting concave portion 7 of the heat insulating roof panel 1, and the fitting is performed. Since the packing 16a is inserted in the gap 12 between the concave portion 7 and the fitting convex portion 6, the cover portion 10 and the packing 16a prevent rainwater from entering the fitting portion between the fitting concave portion 7 and the fitting convex portion 6. Moreover, since the gutter 11 communicating with the gap 12 is provided in the lower part of the fitting recess 7, the rainwater leaking from the packing 16a can be received by the gutter 11 and drained to the outside. It is possible to reliably prevent rainwater from entering. Further, since the placing portion 13 on which the fitting convex portion 6 is placed is provided on the outer side B of the trough portion 11, the fitting convex portion 6 can be supported from below by the placing portion 13, and the fitting convex portion 6 can be supported. The fitting portion between the fitting concave portion 7 and the fitting concave portion 7 can have a strong structure against wind pressure from above and snow load.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. The heat-insulating roof panel 1 used in this embodiment is shown in FIG.
As shown in FIG. 2, a fitting convex portion 6 and a fitting concave portion 7 are formed at both ends of a panel body 5 which is formed by coating two upper and lower metal skins 3 and 4 on the front and back surfaces of the heat insulating material 2. That is, the entire surface is formed into a substantially flat surface having a slight gradient, and one (or a plurality of) reinforcing ribs 8 are provided at a relatively low height in the center of the surface. The working width L of the heat insulating roof panel 1 is set to, for example, 450 mm to 1000 mm, and the thickness D is set to, for example, about 50 mm. In addition, as the heat insulating material 2, for example, an intermediate portion is made of an inorganic fiber material such as rock wool which is shaped in advance to a certain thickness, and both end portions 2b are made of an inorganic material such as calcium silicate that is shaped by extrusion molding or the like. A hard material is used.

As shown in FIG. 1, a cover portion 10 for covering the upper surface 6a of the fitting convex portion 6 of the adjacent heat insulating roof panel 1 is formed on the fitting concave portion 7 of the heat insulating roof panel 1. There is. The cover portion 10 projects substantially laterally with the surface of the panel body 5 toward the side of the panel body 5, and the projection width L ₁ thereof is set to, for example, 18 mm and the thickness D ₁ thereof is set to about 8 mm. On the other hand, the fitting protrusion 6 has, for example, a width L _{4 of} 15 mm and a thickness (<D ₅ ) of about 8 mm, and a gap of about 1 mm is secured between the upper surface 6 a of the fitting protrusion 6 and the cover 10. It is supposed to be done. In addition, the fitting recess 7
A trough portion 11 having a U-shaped cross section, which is arranged on the lower surface 6b side of the fitting convex portion 6, is formed in the lower part of the. The trough portion 11 has a width L ₂ of, for example, 20 mm and a depth D of, for example, about 10 mm.
Have _three . The inner side A of the gutter 11 is the fitting protrusion 6
And the clearance 12 of the fitting recess 7 communicate with each other.
The packing 16a is inserted in the. Further, on the outer side B of the trough portion 11, a mounting portion 13 on which the fitting convex portion 6 is mounted is formed with a width D ₄ of 5 mm, for example.
A nail striking portion 14 that is lower than the mounting portion 13 is formed on the outer side B of the nail striking portion 13. It is supposed to be done. In FIG. 1, 13 is a gap for preventing heat conduction between the metal outer skins 3 and 4, 16b is a packing inserted in a gap 12b below the trough 11, 17
Is a retaining portion of the packing 16b.

When constructing the heat-insulating roof panel 1, however, a plurality of heat-insulating roof panels 1 are arranged side by side on the roof base material 90, and the heat-insulating roof panel 1 is placed above the nailing portion 14 of the fitting recess 7 of the heat-insulating roof panel 1. From the nailing part 1
4 is fixed to the roof base material 90. After that, the fitting convex portion 6 of the other heat insulating roof panel 1 is fitted into the fitting concave portion 7 of the heat insulating roof panel 1, and the cover portion 10 of the roof panel 1 is fitted.
To cover the upper surface 6a of the fitting convex portion 6 of the other roof panel 1,
Position the gutter portion 11 on the lower surface 6b side of the fitting convex portion 6,
The tip of the fitting convex portion 6 is placed on the placing portion 13 located outside the trough portion 11, and the gap 1 between the fitting concave portion 7 and the fitting convex portion 6 is placed.
In a state where the packing 16a is inserted in the second 2, the nailing portion of the fitting recess of the other heat insulating roof panel 1 (same configuration as the nailing portion 14 of the heat insulating roof panel 1) is fixed to the roof base material 90 with a nail. As a result, the watertightness of the fitting portion of the heat insulating roof panels 1, 1, ... Can be secured.

Here, the upper surface 6 of the fitting convex portion 6 of the adjacent heat insulating roof panel 1 is above the fitting concave portion 7 of the heat insulating roof panel 1.
Since the cover portion 10 covering the a is provided in a protruding manner and the cover portion 10 is formed substantially flush with the surface of the panel body 5, the cover portion 1
The influence of wind at 0 is the same as the entire surface of the heat insulating roof panel 1, and strong wind and rainwater are prevented from concentrating on the fitting portion between the fitting convex portion 6 and the fitting concave portion 7. Further, the cover portion 10 and the packing 16 a can prevent rainwater from entering through the gap 12 between the fitting concave portion 7 and the fitting convex portion 6, and also can form the gap 12
Even if rainwater leaks from the inner packing 16a, the rainwater is finally received by the gutter 11 and drained to the outside. Moreover, the gap 12 below the gutter 11
Since the packing 16b is inserted in b, the gutter 11
There is no fear that the rainwater inside leaks out from the gap 12b to the back side of the heat insulating roof panel 1, and as a result, it is possible to reliably prevent the rainwater from entering the inside of the building. In addition, the mounting portion 1 on which the fitting convex portion 6 is mounted on the outer side B of the trough portion 11
By disposing 3, the fitting convex portion 6 is made by the mounting portion 13.
Can be supported from below, and the fitting portion between the fitting convex portion 6 and the fitting concave portion 7 can have a strong structure against wind pressure and snow load from above. Further, by integrally forming the cover portion 10, the gutter portion 11, and the mounting portion 13 in the fitting concave portion 7, it is possible to prevent rain leakage without increasing the number of parts, and
Since the cover part 10, the gutter part 11, and the mounting part 13 can be simultaneously installed only by joining the heat insulating roof panel 1, there is an advantage that the heat insulating roof panel 1 excellent in watertightness can be easily installed.

As another embodiment of the present invention, as shown in FIG. 3, an inner mounting portion 13A in which the tip of the fitting convex portion 6 is mounted on the inner side A of the trough portion 11 in the fitting concave portion 7. May be formed. Other configurations are similar to those of the embodiment shown in FIG. In this embodiment, the fitting convex portion 6 is provided on the mounting portions 13 and 13A.
Even if wind pressure, snow load, etc. are applied from above the fitting portion between the fitting convex portion 6 and the fitting concave portion 7, the supporting force of the fitting convex portion 6 is further increased, There is an advantage that the strength of the joint can be further improved.

As another embodiment, as shown in FIGS. 4 to 7, a hollow joint packing 16c is inserted on the surface side of the fitting portion between the fitting convex portion 6 and the fitting concave portion 7. You may do it. 5 and 7 show a structure in which the nail driving portion 14 is provided below the packing 16b. Other configurations are similar to those of the embodiment shown in FIG. Here, in FIGS. 4 and 5, a recess 20 is formed on the rising surface 6 c of the fitting protrusion 6, and the joint packing 16 c inserted into the recess 20 is used as the fitting protrusion 6.
6 and 7 show a structure in which the joint portion 12a is sealed by pressing with the tip of the fitting, and FIGS. 6 and 7 show a concave portion 20a formed on the tip surface of the fitting convex portion 6, and the joint portion is inserted into the concave portion 20a. A structure is shown in which the packing 16c is pressed by the rising surface 6c of the fitting convex portion 6 to seal the joint portion 12a. In any case, the joint packing 16c can reliably prevent the infiltration of rainwater from the joint portion 12a. The watertightness of the fitting portion can be further increased. The joint packing 16c is not limited to the hollow shape.

As yet another embodiment, FIG. 8 to FIG.
As shown in FIG. 5, a hooking recess 30 may be formed on the lower surface 6b of the fitting protrusion 6 to be hooked on the inner surface side of the mounting portion 13 of the fitting recess 7. 9 shows the case where the thickness of the fitting convex portion 6 is set to the wall thickness D ₅ ′, FIG. 10 (a) shows a flat panel surface, and FIG. 10 (b) shows a plurality of reinforcing ribs 8. It shows what has been set up. Other configurations are similar to those of the embodiment shown in FIG. In this embodiment, by simply hooking the hooking recess 30 of the other heat insulating roof panel 1 to the inner surface side of the mounting portion 13 of the one heat insulating roof panel 1, the heat insulation of the other adjacent heat insulating roof panel 1 is performed. The roof panel 1 can be temporarily fixed, and when fixing the other heat insulating roof panel 1 to the roof base material 90 (FIG. 1), it is not necessary to press the other heat insulating roof panel 1 by hand. The fixing work of No. 1 can be easily performed. Moreover, the packing 16 is hooked with the fitting protrusion 6 hooked in the recess 30.
The structure may be such that a, 16b, 16c are compressed. In this case, in addition to the improvement of the watertightness by the packings 16a, 16b, 16c, the fitting convex portion 6 and the engaging concave portion are hooked by reaction force from the packings 16a, 16b, 16c. Since the engaging force with the place 30 is increased, the temporary insulation roof panel 1 can be more securely fixed, and the insulation roof panel 1 can be fixed more easily.

As yet another embodiment, FIG. 11 to FIG.
As shown in FIG. 4, bent pieces 4 are provided on the end portions of the metal skins 3 and 4.
0 is bent and formed, and the heat insulating material 2 is made of resin foam material such as urethane foam, isocyanurate foam, and phenol foam, and the bending piece 40 is embedded in the end portion 2b of the resin foam material. Good.
In this embodiment, the bent pieces 40, 4 of the metal skins 3, 4 are
The gap 13 between 0 can prevent heat conduction between the upper and lower skins, and the bending piece 40 can prevent the metal skins 3 and 3.
Since the end portions of 4 are locked to the end portions 2b of the heat insulating material 2, respectively,
There is an advantage that it is possible to prevent peeling of the metal skins 3 and 4 from the heat insulating material 2.

[0019]

As described above, the heat-insulating roof panel according to the invention of claim 1 is such that the fitting convex portion and the fitting concave portion are provided at both ends of the panel body in which the heat insulating material is filled between the two metal skins. And a cover portion that covers the upper surfaces of the fitting protrusions of the adjacent roof panels are provided above the fitting recesses, and the cover of the fitting protrusions of the adjacent roof panels is provided under the fitting recesses. A gutter that is located on the lower surface side and that communicates with the gap between the fitting recess and the fitting projection is provided.
Since the mounting portion on which the fitting convex portion is placed is provided on the outer side of the trough portion, the cover portion can prevent rainwater from entering through the gap between the fitting concave portion and the fitting convex portion, and the trough portion. By this, rainwater from the gap can be received and drained to the outside, and the mounting convex portion can be supported from below by the mounting portion. The structure can be strong against snow load and the like. Moreover, by forming the cover portion, the gutter portion, and the mounting portion in the fitting concave portion, it is possible to prevent an increase in the number of parts and to provide excellent installation workability.

According to the second aspect of the present invention, an inner mounting portion on which the tip of the fitting convex portion is placed is formed inside the trough portion in the fitting concave portion of the first aspect. Therefore, in addition to the effect of claim 1, in addition to the effect of claim 1, the fitting convex portion is supported by the mounting portion on the outer side of the trough portion and the inner mounting portion, and wind pressure and snow load are applied from above the fitting portion. Even when the above is added, the supporting force of the fitting convex portion is increased, and the strength of the fitting portion can be further improved.

According to the third aspect of the present invention, a hooking recess is formed on the lower surface of the fitting convex part according to the first aspect, which is hooked on the inner surface side of the mounting part of the fitting concave part. Therefore, in addition to the effect of claim 1, by simply hooking the hooking recess of the heat insulating roof panel adjacent to the mounting portion of the heat insulating roof panel, the other heat insulating roof panel can be attached to the adjacent heat insulating roof panel. It can be temporarily fixed, and when fixing the other heat-insulating roof panel to the roof base material, there is no need to press the heat-insulating roof panel by hand, and the work of fixing the heat-insulating roof panel to the roof base material becomes extremely easy.

According to the invention of claim 4, since the joint packing is inserted on the surface side of the fitting portion of the fitting convex portion and the fitting concave portion of claim 1, In addition to the effect of 1, the joint packing can prevent rainwater from entering from the surface side of the fitting portion, and the watertightness of the fitting portion can be further enhanced. Further, in the connection structure of the heat insulating roof panel according to the invention of claim 5, a fitting convex portion and a fitting concave portion are respectively formed at both ends of the panel body in which the heat insulating material is filled between the two metal skins. , A gutter part which is provided above the fitting recess so as to cover the upper surface of the fitting protrusion of the adjacent roof panel, and which is connected to the gap between the fitting recess and the fitting protrusion at the bottom of the fitting recess. And a mounting portion on which the fitting convex portion is placed to form a heat insulating roof panel, and the fitting convex portion of the other heat insulating roof panel is fitted into the fitting concave portion of one adjacent heat insulating roof panel. Along with covering the upper surface of the fitting convex portion of the other roof panel with the cover portion of one roof panel, and positioning the gutter portion on the lower surface side of this fitting convex portion,
Since the tip of the fitting convex portion is placed on the placing portion located outside the trough, and the packing is inserted in the gap between the fitting concave portion and the fitting convex portion, the fitting is performed by the cover portion and the packing. Rainwater can be prevented from entering from the fitting part of the mating concave part and the fitting convex part, and even if rainwater leaks from the packing, the rainwater is finally received by the gutter part and is not exposed to the outside. Since it is drained, it is possible to reliably prevent rainwater from entering the building. Further, since the mounting portion on which the fitting convex portion is placed is formed on the outer side of the trough portion, the fitting convex portion can be supported from below by the mounting portion,
The fitting portion can have a strong structure against wind pressure from above and snow load. Furthermore, by forming the cover part, the gutter part, and the mounting part in the fitting recessed part, it is possible to prevent rain leakage without increasing the number of parts, and simply by joining the heat insulating roof panel, the gutter part and the gutter part are joined together. Part and placing part can be installed at the same time, and since the panel body is filled with heat insulating material, there is no need to install heat insulating material separately as in the past, and it is possible to easily secure heat insulating properties. In addition to improving the watertightness of the heat insulating roof panel, it is possible to improve the installation workability of the heat insulating roof panel.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention.

FIG. 2 is a side sectional view of the heat insulating roof panel of the above.

FIG. 3 is a sectional view of a main part of another embodiment.

FIG. 4A is a cross-sectional view of a main part of still another embodiment,
(B) (c) is an expanded sectional view explaining the compression state of packing.

FIG. 5 is a sectional view of an essential part of still another embodiment.

FIG. 6 is a cross-sectional view of a main part of still another embodiment.

FIG. 7 is a cross-sectional view of a main part of still another embodiment.

FIG. 8 is a cross-sectional view of a main part of still another embodiment.

FIG. 9 is a cross-sectional view of main parts of still another embodiment.

10 (a) is a side sectional view of the heat insulating roof panel of FIG. 8, and FIG. 10 (b) is a side sectional view of the heat insulating roof panel of FIG.

FIG. 11 is a side sectional view of a heat insulating roof panel of still another embodiment.

FIG. 12 is a cross-sectional view of an essential part of still another embodiment.

FIG. 13 is a cross-sectional view of main parts of yet another embodiment.

FIG. 14 is a cross-sectional view of an essential part of still another embodiment.

15A and 15B are a side sectional view and a main portion sectional view of a conventional example.

FIG. 16 is a sectional view of a main part of another conventional example.

[Explanation of symbols]

 2 heat insulating material 3,4 metal skin 5 panel body 6 fitting convex part 6a upper surface 6b lower surface 7 fitting concave part 10 cover part 11 gutter part 12 gap 12a joint part 13 mounting part 16a packing 16b joint packing 30 pulling recess A inner side B outer side

Claims (5)

[Claims] 1. A fitting convex portion and a fitting concave portion are respectively formed at both ends of a panel main body in which a heat insulating material is filled between two metal outer skins, and a roof panel of an adjacent roof panel is formed above the fitting concave portion. A cover portion is provided so as to cover the upper surface of the fitting convex portion, and the lower portion of the fitting concave portion
A gutter which is located on the lower surface side of the fitting protrusion of the adjacent roof panel and communicates with the gap between the fitting recess and the fitting protrusion is provided, and the fitting protrusion is placed on the outer side of the gutter. An insulating roof panel, characterized in that it is provided with a mounting portion. 2. The heat insulating roof panel according to claim 1, wherein an inner mounting portion on which the tip of the fitting convex portion is mounted is formed on the inner side of the trough portion in the fitting concave portion. . 3. The heat insulating roof panel according to claim 1, wherein a hooking recess that is hooked on the inner surface side of the mounting portion of the fitting recess is formed on the lower surface of the fitting protrusion. 4. The heat insulating roof panel according to claim 1, wherein a joint packing is inserted on the surface side of the fitting portion between the fitting convex portion and the fitting concave portion. 5. A structure for connecting a heat insulating roof panel, which is formed by connecting a plurality of heat insulating roof panels on a roof base material, and is fitted to both ends of a panel body in which a heat insulating material is filled between two metal skins. A fitting convex portion and a fitting concave portion are respectively formed, a cover portion that covers the upper surface of the fitting convex portion of the adjacent roof panel is provided above the fitting concave portion, and the fitting concave portion is provided below the fitting concave portion. And a fitting convex portion are provided with a gutter portion and a mounting portion located outside the gutter portion and on which the fitting convex portion is placed to form a heat-insulating roof panel. The fitting convex part of the other heat insulating roof panel is fitted into the fitting concave part of the heat insulating roof panel, and the upper surface of the fitting convex part of the other roof panel is covered with the cover part of the other roof panel. Position the gutter on the lower surface side of the, place the tip of the fitting convex part on the placing part located outside the gutter, and fit the fitting concave part. A structure for connecting a heat-insulating roof panel, characterized in that packing is inserted in a gap between the convex portion and the convex portion.