JP2013072204A - Roof building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leak-proof roof building material having a solar cell function.SOLUTION: Modules 1 having a solar cell panel 5 are laid in an array. A frame 2 extending from eaves along the border of the neighboring modules 1 in the roof width direction orthogonal to the eaves direction supports the lower face-side edges of the modules 1 on the top face. The rainwater flows toward the eaves direction through a U-shaped groove 12 which is defined by the opposing side faces of the modules 1 and the top face of the frame.

Description

  The present embodiment relates to a roof building material with a solar cell function that can be applied to the roof in the same manner as a roof tile or a slate material.

  Solar cells use the photovoltaic effect to convert light energy into electrical power. A solar battery panel is obtained by connecting a plurality of solar battery cells in series and parallel to obtain necessary voltage and current. This solar cell panel is modularized by being fitted into a frame in order to maintain the overall strength and sealing to withstand the surrounding environment.

  In recent years, global warming and depletion of fossil fuels have become problems, and interest in the global environment and energy is rapidly increasing. Under such circumstances, the installation of solar cell modules is rapidly progressing as an energy source with a low environmental load. This solar cell module is generally installed on the roof of a building.

  As a form of installing the solar cell module on the roof, a method of installing a pedestal or a fixing member on an existing roof and fixing it on the roof is often employed.

  In recent years, a form in which a solar cell module is directly laid without using roof tiles or slate materials on the roof has been proposed. This form is attracting attention from the viewpoint of improving design properties, facilitating construction, and reducing housing construction costs by omitting roof tiles and the like.

Japanese Patent Laid-Open No. 10-254049 JP 08-296696 JP 2000-345671 A

  However, if rainwater flows to the base plate of a house constructed of wood, there is a risk of incurring such corrosion. Therefore, when using solar cell modules as roof construction materials, appropriate measures against rain leakage are indispensable. . Furthermore, since solar cell modules as roofing materials require long-term service life, measures against aging deterioration due to rainwater, etc. are taken.However, due to heavy rain, rainwater flows from the gap between the solar cell module glass surface and the frame. However, there is a possibility that it will intrude in many cases and invade after a long time, and at present, such measures are not taken.

  The present embodiment has been made in view of the above situation, and an object thereof is to provide a roof building material with a solar cell function in which the possibility of rain leakage is reduced.

  The roof building material of this embodiment has the following configuration. That is, each has a solar cell panel and a module that is spread in an array. In addition, there is provided a pedestal that extends along a boundary between both modules adjacent to each other in the roof width direction orthogonal to the eave direction from the ridge and supports the lower surface side edge of both modules on the upper surface. Thus, a U-shaped groove is defined by the opposing side surfaces of both modules and the upper surface of the gantry, and rainwater flows through the U-shaped groove toward the eaves.

It is the perspective view (a) which shows schematic structure of the roof which concerns on 1st embodiment, and a roof building material, and the assembly drawing (b) of a module. It is sectional drawing which cut | disconnected the ridge side frame which concerns on 1st embodiment in the eaves direction from the ridge. It is sectional drawing which cut | disconnected the eaves side frame which concerns on 1st embodiment in the eaves direction from the ridge. It is sectional drawing which cut | disconnected the side frame which concerns on 1st embodiment in the roof width direction. Sectional drawing (a) which cut | disconnected the mount frame which concerns on 1st embodiment in the roof width direction, Sectional drawing (b) which cut | disconnected the eaves tip part in the eaves direction from a ridge, and assembly drawing (c) of a eaves tip part and a mount It is. It is sectional drawing (a) which cut | disconnected the water stop cap which concerns on 1st embodiment in the roof width direction, and the attachment figure (b) of a water stop cap. It is sectional drawing which cut | disconnected the eaves edge makeup | decoration part which concerns on 1st embodiment in the eaves direction from the ridge. It is the attachment figure (a) to the baseplate of the mount which concerns on 1st embodiment, and sectional drawing (b) which cut | disconnected the connection part of the eaves edge decoration part and the top module from the ridge in the eaves direction. Sectional drawing (a) which cut | disconnected the junction part of the ridge side frame and eaves edge frame which concern on 1st embodiment in the eaves direction from a ridge, and sectional drawing which cut | disconnected the boundary part of the module row | line | column after an assembly in the roof width direction ( b). Sectional drawing (a) which cut | disconnected the joint part of the top module and the ridge accommodation which concern on 1st embodiment in the eaves direction from the ridge, and sectional drawing which cut | disconnected the module of the roof edge part in the roof width direction ( b). It is sectional drawing which cut | disconnected the boundary part of the module row | line | column after assembling using the side frame which concerns on 2nd embodiment in the roof width direction. It is sectional drawing which cut | disconnected the boundary part of the module row | line | column after assembling using the concave receiving part which concerns on 3rd embodiment in the roof width direction.

Hereinafter, each embodiment of the present invention will be described with reference to FIGS.
[First embodiment]
(overall structure)
FIG. 1 is a perspective view showing the roof building material according to the first embodiment. (A) of FIG. 1 has shown the whole structure of the roof building material, (b) has shown schematic structure of the module 1 which comprises a roof building material. As shown to (a) of FIG. 1, a roof building material is provided with the module 1, the mount frame 2 which supports this module 1, and the eaves edge decoration part 3 which positions the module 1. As shown in FIG.

  The gantry 2 is a crosspiece that supports the module 1. The gantry 2 extends in parallel from the ridge along the eaves. The installation position of the gantry 2 is directly below the boundary between the modules 1 that continuously extends from the ridge along the eaves. That is, each module 1 is arranged so that the lower edge of the side surface is placed on one side of the gantry 2, and both modules 1 facing each other in the roof width direction perpendicular to the direction from the ridge to the eaves face each other on the gantry 2. Further, this boundary, that is, the clearance, is covered by the water stop cap 9.

  Modules 1 are laid in an array in the vertical and horizontal directions on a roofing sheet 4 of a house. As shown in FIG. 1B, the module 1 includes a solar cell panel 5 and a frame that supports the periphery thereof. On the side surface of the solar cell panel 5 on the ridge side, a ridge side frame 6 is fitted. An eaves side frame 7 is fitted on the eaves side surface of the solar cell panel 5. Side frames 8 are fitted on both side surfaces extending from the ridge along the eaves.

(Structure of the building side frame)
FIG. 2 is a cross-sectional view of the building side frame 6 cut from the building along the eaves. In the module 1, the ridge-side frame 6 extends slightly longer than the ridge-side side of the solar cell panel 5 and supports the rim of the solar cell panel 5 on the ridge side. The ridge-side frame 6 includes a support portion 6a, a collar receiver 6b, a drainage channel 6c, and a reinforcing member 6d, and is integrally formed by extrusion molding.

  The solar cell panel 5 is sandwiched between the support portions 6a. The support portion 6a is a member having a U-shaped cross section opened in a direction from the ridge toward the eaves. The solar cell panel 5 is fitted into the inner space where the U-shape is defined.

  The collar receiver 6b is a plate-like member through which a screw hole 6e is provided, and is erected on the back surface of the U-shaped portion. The collar receiver 6b stands at a position lower than the upper surface of the support portion 6a, and a step portion 6f is formed by the back surface of the support portion 6a and the upper surface of the collar receiver 6b.

  A drainage channel 6 c is provided along the length direction of the ridge-side frame 6 at the lower portion of the collar receiver 6 b. The drainage channel 6c is a member having a square shape in cross section, and the plate-like member of the collar receiver 6b also serves as the upper surface of the drainage channel 6c. On the end face of the ridge-side frame 6, an opening for communicating the drainage channel 6c with the outside is formed. In addition, the screw hole 6e penetrated by the collar receptacle 6b will connect this drainage channel 6c and the exterior.

  Further, a reinforcing member 6 d is provided along the length direction of the ridge-side frame 6 at the lower portion of the support portion 6 a. The reinforcing member 6d has increased strength so that the ridge-side frame 6 is not damaged when the solar cell panel 5 is supported by the support portion 6a. The reinforcing member 6d is a member having a square cross section, and the bottom surface of the support portion 6a also serves as the upper surface of the reinforcing member 6d.

(Structure of eaves side frame)
FIG. 3 is a cross-sectional view of the eaves-side frame 7 cut from the ridge along the eaves. The eaves side frame 7 extends slightly longer than the eave side of the solar cell panel 5 and supports the eaves side periphery of the solar cell panel 5. The eaves-side frame 7 includes a support portion 7a, a collar 7b, and a reinforcing member 7c, and is integrally formed by extrusion molding.

  The solar cell panel 5 is sandwiched between the support portions 7a. The support portion 7a is a member having a U-shaped cross section opened in a direction from the eave toward the ridge. The solar cell panel 5 is fitted into the inner space where the U-shape is defined.

  The collar 7b is a plate-like member through which a screw hole 7e is provided, and is erected on the back surface of the U-shaped portion of the support portion 7a. The collar 7b is continuous with the upper surface of the U-shaped portion and is horizontal with the upper surface. The length of the collar 7 b is the same as the collar receiver 6 b of the ridge side frame 6. The screw hole 7 e is provided at a position corresponding to the screw hole 6 e provided in the collar receiver 6 b of the ridge side frame 6. Two convex portions 7f are erected on the bottom surface of the collar 7b. The convex portion 7f is adjusted to have a height obtained by subtracting the thickness of the collar 7b from the height of the step portion 6f of the ridge side frame 6.

  A reinforcing member 7 c is provided along the length direction of the eaves side frame 7 at the lower portion of the support portion 7 a. The reinforcing member 7c is increased in strength so that the eaves side frame 7 is not damaged when the solar cell panel 5 is supported by the support portion 7a. The reinforcing member 7c is a member having a square shape in cross section, and the bottom surface of the support portion 7a also serves as the upper surface of the reinforcing member 7c.

(Side frame configuration)
FIG. 4 is a cross-sectional view of the side frame 8 cut in the roof width direction. The side frame 8 has substantially the same length as the side extending from the ridge of the solar cell panel 5 to the eaves, and supports the periphery of the side extending from the ridge of the solar cell panel 5 to the eaves. The side frame 8 includes a support portion 8a and a foot portion 8b, and is integrally formed by extrusion molding.

  The solar cell panel 5 is sandwiched between the support portions 8a. The support portion 8a is a member having a U-shaped cross section, and the solar cell panel 5 is fitted into an inner space where the U-shape is defined.

  The foot 8b is a member having an L-shaped cross section. The foot portion 8 b extends downward from the back surface of the support portion 8 a and is bent so as to open in the opposite direction to the solar cell panel 5. A screw hole 8c is formed through the bottom surface of the foot 8b. As will be described later, the screw holes 8 c correspond to the screw holes 2 f and 2 g provided on the upper surface of the gantry 2.

(Configuration of the base and eaves tip)
FIG. 5 is a cross-sectional view of the gantry 2 and the eaves tip 10. Fig.5 (a) is sectional drawing which cut | disconnected the mount frame 2 in the roof width direction. FIG. 5B shows a cross-sectional view of the eaves tip 10 cut from the ridge in the eave direction, and FIG. 5C shows a view in which the eaves tip 10 is attached to the cross section of the gantry 2. The gantry 2 is installed in parallel from the ridge along the eaves. The gantry 2 is disposed immediately below the boundary between the modules 1 that continuously extends from the ridge along the eaves. The gantry 2 is fixed to the base plate and supports the module 1 on the upper surface. As shown to Fig.5 (a), this mount frame 2 is comprised from the support stand 2a, the ditch | groove 2b, and the fixing | fixed part 2c, and is integrally molded by extrusion molding.

  The support base 2a is a quadrangular prism-shaped member extending from the ridge to the eaves. On the upper surface of the support base 2a, screw holes 2f and 2g are formed through the one-side regions 2d and 2e distinguished by the axis. The foot 8b of the module 1 is placed on the one side region 2d, and the foot 8b of the module 1 facing the module 1 is placed on the other side region 2e. That is, the screw holes 2 f and 2 g are provided at positions corresponding to the screw holes 8 c in the foot portion 8 b of the side frame 8. Further, on the upper surface of the support base 2a, screw holes 2h are provided at predetermined intervals on the axis, and screws for fastening a water stop cap 9 described later are screwed together.

  A hollow portion 2i extending from the ridge to the eave is provided inside the support base 2a, and the front end surface of the support base 2a on the eave tip side is open. A plate-like eaves tip 10 shown in FIGS. 5B and 5C is attached to the opening. The eaves tip 10 is provided with an opening 10b. The opening 10b connects the hollow part 2i and the outside of the support 2a when the eaves tip 10 is attached to the support 2a. Moreover, the eaves tip part 10 is higher than the support stand 2a, and protrudes from the upper surface of the mount frame 2 when attached to the support stand 2a. As shown in FIG. 5B, the upper part of the eaves tip 10 has a bent portion 10a that is refracted on the support base 2a side, and covers the edge of the upper surface of the support base 2a.

  The concave groove 2b is provided on both side surfaces extending from the ridge of the support base 2a to the eaves. The concave groove 2b has a bottom surface that extends horizontally from the bottom side of the support base 2a, and extends from the ridge toward the eave. The concave groove 2b shares one of its side surfaces with the support base 2a, and the other side surface stands upright from the bottom end at the same height as the side surface of the support base 2a.

  The fixing portions 2c are respectively provided on the outer surfaces extending from the ridges of the both concave grooves 2b to the eaves. The fixing portion 2c is formed thicker than the plate-like portion that forms the bottom sides of the support base 2a and the concave groove 2b, and is inclined so that the thickness decreases toward the outside. A screw hole 2j is provided in the fixing portion 2c.

(Structure of water stop cap)
Fig.6 (a) is sectional drawing which cut | disconnected the water stop cap in the roof width direction. As shown in the attachment drawing of the water stop cap of FIG. 6B, a water stop cap 9 is provided at the upper part between the two modules 1 adjacent to each other in the roof width direction. The water stop cap 9 has a flat plate shape and is bridged by both modules 1 so as to cover the gap between both modules 1. The water stop cap 9 is provided with two plate-like members 9a extending from the ridge toward the eaves on the surface facing the upper surface of the support base 2a. The plate-like member 9 a positions the water stop cap 9 at the boundary between the two modules 1 and improves the rigidity of the water stop cap 9. The water stop cap 9 has a screw hole 9b at a position corresponding to the screw hole 2h penetrating on the axis of the support base 2a.

(Configuration of the eaves makeup department)
FIG. 7 is a cross-sectional view of the eaves edge decorative section 3 cut from the ridge in the eave direction. The eaves decorative part 3 extends along the eaves, positions the module 1 and improves the design of the eaves. The first module 1 arranged closest to the eaves side is placed in contact with the ridge side end 3f of the eaves edge decorative part 3. The eaves edge decorative portion 3 has a member having a triangular cross section inclined toward the eave side and a member having a trapezoidal cross section, and is integrally formed by extrusion molding.

  The member having a triangular cross section is located on the eaves side. The member having a triangular cross section has a lower surface cut out by one step from the eaves side, and has a step portion 3a on the ridge side. Projections 3b are formed from the corners of the step 3a toward the eaves. In addition, the triangular cross-section member has an acute end portion extending toward the eaves.

  The member having a trapezoidal cross section is located on the ridge side of the member having a triangular cross section. The member having a trapezoidal cross section has the same height as the member having a triangular cross section, and shares the surface on the eaves side with the member having a triangular cross section. The trapezoidal member having the same cross section as the module 1 has the same height as that of the module 1, but the upper surface of the ridge side is notched lower than the height, and the surface that is one step lower is the collar receiver 3c. Yes.

  The trapezoidal member of this cross section has a shorter bottom side. That is, a part of the surface on the ridge side is inclined toward the eaves side so as to be connected to the lower side. In the middle of the inclined surface 3h, a plate-like member 3d having a threaded hole 3g is provided in an obliquely downward direction. The tip of the plate-like member 3d extends to a position where the cross section is flush with the upper and lower sides of the trapezoid. Furthermore, a plate-like protrusion 3e having a predetermined height is erected on the upper surface of the eaves edge decorative portion 3. The plate-like protrusion 3e is inclined and installed on the ridge side.

(installation method)
(Attaching the mount)
A method for attaching the roof building material will be described in detail with reference to FIGS. 1 and 8 to 10. First, as shown in FIG. 1, the gantry 2 is extended in parallel from the ridge along the eaves as a bar that supports the module 1. The mounts 2 are installed at equal intervals with the length of the module 1 in the roof width direction.

FIG. 8A shows attachment of the gantry 2 to the base plate. The gantry 2 is fixed to the base plate by inserting a screw through the screw hole 2j into the fixing portion 2c on the outermost side. Since the fixing portion 2c is inclined, the screw is inserted obliquely with respect to the base plate. Therefore, it is possible to prevent the screws from coming off when the screws are inserted vertically with respect to the base plate.
(Attaching the eaves tip)

FIG. 8B shows a connection portion between the eaves edge decorative portion 3 and the leading module 1. As shown in FIG. 8 (b), the eaves tip part 10 is attached to the surface of the eaves tip of the gantry 2. The eaves tip 10 is attached so as to cover the end surface of the support 2a. At this time, the eaves tip portion 10 rises higher than the support base 2a, and a space is generated between the bent portion 10a and the support base 2a.

(Installation of the eaves decorative part)
When the eaves tip portion 10 is attached, the eaves decorative portion 3 is then attached as shown in FIG. The eaves decorative portion 3 is fixed to the gantry 2 and extends in the roof width direction along the eaves. At this time, the protrusion 3b provided on the eaves tip decorative portion 3 is inserted into a space existing between the bent portion 10a of the eaves tip end portion 10 and the upper surface of the support base 2a. The eaves decorative part 3 is fixed by inserting a screw into the screw hole 3g of the plate-like member 3d standing from the ridge side inclined surface 3h.

  When a screw is inserted into the screw hole 3g of the plate-like member 3d after the eaves-end decorative component 3 is attached, the extending direction of the screw approaches perpendicular to the ground and makes an acute angle with respect to the surface of the roof. Accordingly, even if a load is applied to the roof building material, the load is directed in the compression direction of the screw. Further, the load in the direction in which the roof building material slides down the roof is also directed toward the compression direction of the screw. Therefore, the screw is not easily damaged such as bending or tearing.

(Installing the first module)
When the gantry 2 and the eaves decoration 3 are attached, the top module 1 is attached as shown in FIG. First, the top module 1 is aligned so that the front end surface of the top module 1 is in contact with the ridge side end 3f of the eaves-end decorative section 3.

  At this time, the collar 7 b of the eaves side frame 7 included in the leading module 1 is put on the collar receiver 3 c of the eaves edge decorative portion 3. After the collar 7b is put on the collar receiver 3c and the screw holes are aligned with each other, they are fixed to each other with screws.

  The convex part 7f provided on the lower surface of the collar 7b is adjusted to be a height obtained by subtracting the thickness of the collar 7b from the height of the step part 6f of the ridge side frame 6. Therefore, the convex part 7f resists the pressing force at the time of screwing the screw, and the surface of the collar 7b and the surface of the eaves edge decorative part 3 are flush with each other. The gap between the collar 7b and the collar receiver 3c is sealed with a seal member 11. As the seal member 11, for example, an ept seal can be used.

(Mounting module 1 in the next stage and after)
FIG. 9A shows a joint between the ridge side frame 6 and the eaves frame 7. The first module 1 is attached so that the subsequent modules 1 are stacked on the ridge side. First, the eaves side surface of the eaves side frame 7 provided in the next module 1 is brought into contact with the ridge side surface of the ridge side frame 6 provided in the previous module 1.

  At this time, the collar 7 b of the eaves side frame 7 included in the leading module 1 is put on the collar receiver 6 b of the ridge side frame 6. When the collar 7b is put on the collar receiver 6b, the screw holes 6e and 7e are aligned with each other and then fixed to each other with screws. The convex portion 7f provided on the lower surface of the collar 7b is adjusted to have a height obtained by subtracting the thickness of the collar 7b from the height of the stepped portion of the ridge side frame 6. Therefore, the convex part 7f resists the pressing force when screws are screwed together, and the surface of the collar 7b and the surface of the ridge side frame 6 are flush with each other. The gap between the collar 7b and the collar receiver 6b is sealed with a seal member 11. As the seal member, for example, an ept seal can be used.

  FIG. 9B shows the boundary portion of the module row after assembly. The module 1 is fixed to the support base 2 a of the gantry 2. The support base 2a becomes a boundary between the modules 1 adjacent to each other in the roof width direction. The left module 1 viewed from the eaves has a foot 8b provided on the right side frame 8 on the left side of the upper surface of the support base 2a, and the right module 1 has a left side on the right side of the upper surface of the support base 2a. The foot portion 8b provided on the side frame 8 is placed, and a screw is inserted through the foot portion 8b to be fixed to the support base 2a. When assembled in this manner, the U-shaped groove 12 is defined by the opposing side surfaces of the modules 1 that are adjacent to each other with the support table 2a interposed therebetween and the upper surface of the support table 2a.

(Attaching the water stop cap)
When the installation of the module 1 is completed, the water stop cap 9 is then attached. The water stop cap 9 is attached so as to bridge the module rows arranged in a row from the ridge toward the eaves. First, the mounting position of the water stop cap 9 is determined by inserting the plate-like member 9a of the water stop cap 9 into the boundary between the module rows. And the screw hole 9b of the water stop cap 9 and the screw hole 2h provided on the axis line of the support base 2a are made to correspond, and one screw is passed through these screw holes.

(Plot of ridge and keraba)
FIG. 10A shows a joint portion between the module 1 on the ridge-side top and the ridge 20. FIG.10 (b) has shown the part (keraba 21) which is a roof edge part and has protruded from the outer wall of a house. In the highest module 1 on the ridge side, the ridge adjusting material 13 is screwed to the collar receiver 6b of the ridge side frame 6, and the ridge 20 is placed thereon. Moreover, about the space which cannot mount the module 1 in the edge part of a roof, the plywood 15 is loaded on the adjustment material 14, and the keraba 21 is accommodated by giving the sheet metal 16 from it.

  The roof building material of this embodiment can improve the water-stopping property and drainage by the assembly structure as described above. The effect will be described in detail below.

  First, the water stoppage of this roof building material will be described. As shown in FIG. 9B, when rainwater falls on this roof building material, the U-shaped grooves 12 defined by assembling the module rows so as to be bridged by the water-stop caps 9 are formed in the water-stop cap 9. Therefore, inflow of rainwater into the U-shaped groove 12 is prevented. That is, the side surface of the module 1 that tends to be a rainwater intrusion route is not unnecessarily exposed to rainwater.

  9A, the side surface of the module 1 in the roof width direction forms a horizontal plane in which the upper surface of the collar 7b of the eaves side frame 7 and the upper surface of the support portion 6a of the ridge side frame 6 are continuous. . Further, as shown in FIG. 8 (b), a horizontal plane in which the upper surface of the collar 7 b of the eaves side frame 7 and the upper surface of the eaves edge decorative part 3 are continuous is formed. Due to the one-sided structure that continues from the ridge toward the eaves, rainwater flows smoothly from the ridge to the eaves, and rainwater intrusion into the lower surface of the module 1 and the connecting portion is suppressed.

  Further, this flush configuration reduces the room for rainwater to enter the lower surface and the connecting portion of the module 1 even when rainwater blows up from the eave toward the ridge due to wind or the like. The bent portion 10a of the eaves tip 10 also prevents rainwater from being blown into the roof building material due to a reverse flow of rainwater caused by wind or the like. Further, as shown in FIG. 9 (a), rainwater is prevented from entering between the collar 7b and the collar receiver 6b by sealing the sealing member 11, and the water stopping performance is improved as a whole.

  Next, the drainage of the roof building material of this embodiment when rainwater leaks into the module 1 will be described. First, as shown in FIG. 9 (b), when rainwater enters from the gap between the water stop cap 9 and the upper surface of the module 1, the rainwater flows into the U-shaped groove 12 and travels along the U-shaped groove 12 toward the eaves direction. To the outside of the roof building materials. Furthermore, even if rainwater leaks from the screw holes 2f and 2g of the support 2a of the gantry 2 into the support 2a, the rainwater flows along the hollow portion 2i toward the eaves, and the gantry from the opening 10b of the eaves tip 10 is provided. 2 It is discharged outside.

Further, even if rainwater enters between the bottom surface of the foot portion 8b of the side frame 8 forming the U-shaped groove 12 and the top surface of the support base 2a, the rainwater that has entered flows into the concave groove 2b to the outside of the gantry 2 Discharged. Thus, since measures are taken to discharge rainwater to the outside in each of the U-shaped groove 12, the hollow portion 2 i, and the recessed groove 2 b, the possibility that rainwater stops inside the roof building material can be further reduced. it can.

  Next, when the seal member 11 filled between the collar 7b of the eaves side frame 7 and the collar receiver 6b of the ridge side frame 6 shown in FIG. Although there is no risk of rainwater entering from the screw holes 6 e of the side frame 6, the rainwater flows into the drainage channel 6 c of the ridge side frame 6. The drainage channel 6 c extends in the length direction of the ridge side frame 6 and communicates with the U-shaped groove 12. Therefore, the rainwater that has flowed into the drainage channel 6c is guided to the U-shaped groove 12 and discharged outside the building material.

  Furthermore, as shown in FIG. 8 (b), the back surface of the eaves edge part 3 is inclined toward the eaves side, and the eaves side surface of the eaves side frame 7 of the leading module 1 is vertical. A space K having a triangular cross section is formed between 3 and the eaves edge frame 7. This space K extends to the outside of the roof building material, and becomes a rainwater path for escaping rainwater. By this space K, rainwater that has been guided to the U-shaped groove 12 and has flowed to the eaves side, and further rainwater that has entered from the joint between the eaves edge decorative portion 3 and the leading module 1 can be discharged to the outside of the roof building material. .

  Moreover, the protrusion 3e provided in the eaves-end decorative portion 3 conceals the water stop cap 9 and improves the design of the roof. Further, the protrusion 3e can also act as a snow stopper.

According to the first embodiment as described above, rainwater does not enter the inside of the module 1 and the leaked rainwater is discharged outside the roof building material. Thereby, it is possible to prevent water leakage to the base plate of the house. Moreover, the effect which becomes possible to prevent the backflow, blowing, etc. of rainwater by a strong wind etc. is acquired.

[Second Embodiment]
Next, the roof building material which concerns on 2nd embodiment is demonstrated in detail with reference to drawings. FIG. 11 is a cross-sectional view of the side frame 17 in the second embodiment. The same components as those of the first embodiment are denoted by the same reference numerals as those of the components, and the description thereof is omitted.

  In the side frame 17 in the second embodiment, the back surface of the U-shaped portion extends downward in the foot portion and is bent in the opposite direction to the solar panel, but the bent portion forms an obtuse angle. doing. That is, the leg portions of the side frames 17 are shaped so that the substantially square shapes face each other on the support base 2a. Therefore, the groove defined by the side frames 17 facing each other on the support base 2a and the upper surface of the support base 2a is tapered.

  According to the second embodiment as described above, the groove formed on the support base 2a is constricted in a tapered shape, and rainwater collects at the center of the bottom of the groove. It becomes easy to flow through. That is, even a small amount of water leakage is less likely to accumulate in the groove and can be efficiently discharged to the outside of the gantry 2. Furthermore, even when the roof inclination from the ridge to the eave is relatively gentle, it can be efficiently discharged to the outside of the gantry 2.

[Third embodiment]
FIG. 12 is a diagram showing the concave grooves 2b on both sides of the support base 2a of the gantry 2 in the third embodiment according to the present embodiment. The same components as those of the first embodiment are denoted by the same reference numerals as those of the components, and the description thereof is omitted.

  In FIG. 12, the receiving part 18 is extended from the both sides of the support stand 2a to the eaves direction. The receiving part 18 has a concave shape in cross section, and shares one side with the side of the rectangular parallelepiped. The bottom surface is provided at a position higher than the bottom surfaces of the support base 2a and the groove 2b and is narrower than the width of the groove 2b. The other side surface rises upward from the bottom end portion, and the tip thereof is lower than the upper surface of the support base 2a.

In the embodiment of the present invention configured as described above, the following effects are produced.
The receiving part 18 forms a rainwater path together with a part of the side surface of the support base 2a. In this rainwater path, rainwater leaked through the contact surface between the bottom surface of the foot of the side frame 8 and the top surface of the gantry 2 is collected before the recessed groove 2 b and discharged to the outside of the gantry 2. Thereby, a rainwater path becomes a double structure and it prevents that rainwater flows out into the ditch | groove 2b located right above a field plate.

According to the third embodiment as described above, the leaked rainwater first flows into the receiving portion 18 and is discharged to the outside of the gantry 2. Thereby, the effect which reduces possibility that rainwater will flow into the ditch | groove 2b will be acquired. Since the bottom surface of the concave groove 2b is a part of the bottom surface of the gantry 2, the durability of the module 1 can be improved by preventing the concave groove 2b from being deteriorated by rainwater.

[Other embodiments]
In the present specification, a plurality of embodiments according to the present invention have been described. However, these embodiments are presented as examples and are not intended to limit the scope of the invention. Specifically, a combination of all or any of the first to third embodiments is also included. The above embodiments can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 1 Module 2 Base 2a Support stand 2b Groove 2c Fixing part 2d, 2e One side area | region 2f, 2g, 2h, 2j Screw hole 2i Hollow part 3 Eaves-end decorative part 3a Step part 3b Collar 3c Collar receiving 3e Protrusion 3d Plate top member 3f Joining Surface 3g Screw hole 3h Inclined surface 4 Roofing sheet 5 Solar panel 6 Building side frame 6a Supporting part 6b Collar receiving 6c Drainage channel 6d Reinforcing material 6e Screw hole 6f Stepped part 7 Eave side frame 7a Supporting part 7b Collar 7c Reinforcing material 7e Screw Hole 7f Convex 8 Side frame 8a Support 8b Foot 8c Screw hole 9 Water stop cap 9a Plate member 9b Screw hole 10 Eaves tip 10a Bent portion 10b Opening 11 Seal member 12 U-shaped groove 13 Building adjustment material 14 Adjustment Material 15 Plywood 16 Sheet metal 17 Side frame 18 Receiving part
20 Building 21 Keraba

Claims (13)

Modules each having a solar panel and laid in an array,
A pedestal that extends along the boundary between both modules adjacent to each other in the roof width direction perpendicular to the eave direction from the ridge, and supports the lower surface side edge of both modules on the upper surface;
With
A path through which rainwater flows in the direction of the eaves by the U-shaped groove defined on the opposite side surfaces of the two modules and the upper surface of the mount;
Roof building materials characterized by The module is
An L-shaped side frame that opens to the outside, supporting the solar cell panel from both sides,
Both modules adjacent in the roof width direction are
Being fixed to the frame so as to face each other with the side frames,
The roof building material according to claim 1. The module is
The solar cell panel is supported from both side surfaces, and has a substantially U-shaped side frame that is open to the outside.
Both modules adjacent in the roof width direction are
It is fixed to the frame so as to face each other with the side frame,
The U-shaped groove has a lower end that is tapered by the side frame,
The roof building material according to claim 1. In the U-shaped groove,
A flat water-stop cap is further provided in the upper part,
The water-stop cap bridges both the modules and seals the U-shaped groove,
The roof building material according to any one of claims 1 to 3, wherein: On the surface of the water stop cap that faces the top surface of the mount,
Two plate-like members serving as positioning guides for placing the water stop cap on the boundary between the two modules are erected,
The roof building material according to claim 4. In the mount,
A hollow part extending from the ridge toward the eave is provided,
At the front end of the eaves side of the hollow portion was provided with an opening communicating with the outside of the gantry,
The roof building material according to any one of claims 1 to 5, characterized in that: On both sides of the hollow part of the mount,
A ditch extending from the ridge toward the eaves is provided,
Draining rainwater leaking from the U-shaped groove to the outside of the module by flowing in the direction of the eaves,
The roof building material according to any one of claims 1 to 6, characterized in that: An eaves decorative portion that supports the module is provided at the eaves,
The tip of the eaves decorative part is provided with an inclination,
The roof building material according to claim 1, wherein: In the joint part of the module and the eaves decorative part,
A part of the contact surface of the eaves edge decorative part is formed with a back surface inclined to the eaves side to form a space with the module,
The roof building material according to claim 8. In the eaves decorative part,
A protrusion is provided at a position where the water stop cap is concealed;
The roof building material according to claim 8. The eaves side end of the module is provided with an eaves side frame having a collar having a predetermined length, and the ridge side end is provided with a ridge side frame having a collar receiver.
The modules are connected so as to prevent rainwater from entering between the modules by overlapping and engaging the collar and the collar receiver,
The roof building material according to any one of claims 1 to 10, wherein: The ridge side frame is
A screw hole for being screwed to the collar is provided in the collar receiver,
A hollow portion communicating with the U-shaped groove is formed under the collar receiver,
Flowing rainwater that has entered through the screw holes in a horizontal direction, guiding the U-shaped groove,
The roof building material according to claim 11. The collar receiver and the collar are
The joint part is sealed with a sealing member,
The roof building material according to claim 11 or 12, wherein:

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