JP3548495B2 - Solar energy module, solar energy system equipped with the solar energy module, and house equipped with the solar energy system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a solar energy module typified by a solar cell module installed on a roof or the like of a residential building, a solar energy system including the solar energy module, and a house including the solar energy system. In particular, the present invention relates to a measure for increasing the output of a solar energy module.
[0002]
[Prior art]
Conventionally, unlike thermal power generation, which burns fossil fuels such as petroleum, and nuclear power generation, which has difficulty in treating waste, solar cell systems that generate electricity using clean solar energy that has minimal impact on the global environment have been developed. Are known. In recent years, this solar cell system has been adopted in general homes as the price has dropped. By providing a private power generation facility using such a solar cell system, power can be obtained during the day without requiring power transmission from a power company. In addition, when surplus power is generated during daytime power generation, the surplus power can be sold to a power company.
[0003]
Generally, this type of solar cell system has a solar cell module in which a solar cell module main body is supported by a frame. In other words, a groove for fitting the outer peripheral portion of the solar cell module main body is provided in the frame body, and the two are integrated by fitting the outer peripheral portion of the solar cell module main body into this groove.
[0004]
When installing this solar cell module on a roof surface, a support bracket is installed on a roof material such as a tile, and a support bar is placed on the support bracket. The solar cell module is mounted on the support bar. Also, when applying to a roof with slate tiles, a support bracket is installed on the slate tile, a support bar is placed on the support bracket, and a solar cell module is mounted on the support bar. I have to.
[0005]
In addition, the revision of the Building Standards Law has made it possible to use solar cell modules as roofing materials. This method is disclosed, for example, in Japanese Patent Application Laid-Open No. 9-96071.
[0006]
This publication discloses an installation structure of a solar cell module generally called a “super straight type”. Hereinafter, the installation structure of this system will be described in detail.
[0007]
FIG. 12 is an exploded perspective view of a solar cell module a employed in this method. The solar cell module a is provided with a solar cell row b formed by connecting a plurality of solar cells b1, b1,... In series or in parallel by an interconnector or the like. This solar cell row b is sandwiched between a white plate reinforced glass d forming a light receiving surface and a steel plate-containing film e forming a back surface via a filler c, c made of a transparent resin, thereby forming a rectangular plate-shaped frameless. Module a1 is manufactured.
[0008]
Then, the peripheral portion of the frameless module a1 is fitted and supported by a module frame f which is an extruded product of aluminum or the like via waterproofing waterproof materials g, g,. f3 and f4 are connected by screws. Of the module frames f1, f2, f3, f4, a rib h is formed in the ridge-side module frame f1, and a screw hole h1 for fixing is formed in the rib h.
[0009]
The height of each of the module frames f1, f2, f3, f4 is, for example, 37 mm. Since the photovoltaic cell row b is located below the white-plate tempered glass d, as shown in FIG. 13, the upper surface of the photovoltaic cell row b has a predetermined dimension (t1 in the figure) larger than the upper end of the module frame f. ) (For example, a position lower by 5 mm).
[0010]
FIG. 14 shows a state in which the solar cell modules a, a,. That is, a wood screw i is inserted into the screw hole h1 of the ridge-side module frame f1 of the solar cell module a located below (eave side) in the flow direction of the roof, and the module frame f1 is attached to the roof surface (field board, etc.). Fixed to. In addition, the eave-side module frame f2 of the solar cell module located on the upper side (ridge side) in the flow direction of the roof is placed on the ridge-side module frame f1 of the solar cell module adjacent to the eaves side. The overlap dimension is, for example, 24 mm.
[0011]
[Problems to be solved by the invention]
By the way, various types of roofing materials have been adopted, such as roof tiles having a relatively large thickness such as Japanese tiles and western tiles, and tiles having a relatively small thickness such as slate tiles.
[0012]
When designing a solar cell module assuming that it is placed next to a Japanese tile or a thick tile, adjust the thickness of the solar cell module so that the shadow of the tile is not positioned on the light-receiving surface of the solar cell module. It is conceivable to increase the thickness to about the thickness of the tile. That is, as shown in FIG. 15A (FIG. 15 is a cross-sectional view of the roof viewed from the eaves side to the ridge side, and schematically shows the solar cell module a and the roof j). If the position of the light receiving surface a2 of the solar cell module a is lower than the upper surface position of the adjacent tile j, the shadow of the tile j is formed on the light receiving surface a2 in a situation where the elevation angle is relatively small, such as the morning sun. Would. In this case, the output of the photovoltaic module a may decrease, and a sufficient power generation amount may not be obtained. In this figure, the direction of irradiation of the sun rays is indicated by arrows. In this case, the length dimension of the shadow is t2. Therefore, as shown in FIG. 15B, the height position of the light receiving surface a2 is made substantially coincident with the upper surface position of the roof j to prevent the shadow from being generated.
[0013]
However, when the solar cell module a designed in this way is arranged adjacent to the slate roof j, as shown in FIG. 15C, the upper surface height position of the solar cell module a and the height of the slate roof j are determined. Due to the difference from the upper surface height position, the upper surface of the solar cell module a protrudes greatly from the upper surface of the slate roof tile j, and the appearance of the roof is poor, which is not preferable in a house design.
[0014]
In view of these points, it is conceivable to prepare a plurality of types of solar cell modules according to adjacent tiles in advance and select a solar cell module to be used according to the tile. However, in this case, it is necessary to design and manufacture a plurality of types of solar cell module bodies, which leads to an increase in manufacturing cost, which is not practical.
[0015]
Such a problem is the same not only when a solar water heater module but also a solar water heater module is laid.
[0016]
The present invention has been made in view of the above point, and an object of the present invention is to eliminate the necessity of preparing a plurality of types of solar energy module main bodies corresponding to types of adjacent tiles. It is an object of the present invention to provide a configuration capable of avoiding a situation in which, even when the light receiving surface is adjacent, a shadow of a roofing material such as a tile or a building material is located on the light receiving surface and the output is reduced.
[0017]
[Means for Solving the Problems]
-Summary of the invention-
In order to achieve the above-mentioned object, the present invention provides a method for manufacturing a roof material such as a tile or a shadow of a building material so that a shadow may be located on a light receiving surface of a solar energy module. The width of the frame is set to be configured as a frame for supporting the energy module body.
[0018]
-Solution-
Specifically, the present invention provides a solar energy module having a roof tile that is laid adjacent to a roof tile on which a roof tile is laid, and an outer edge portion of the solar energy module body is supported by a plurality of frame members. Assume a module. In this solar energy module, the width dimension of the side frame material is set larger than the width dimensions of the other frame materials if the frame material is adjacent to the roof tile in the girder direction. The width dimension of the frame member adjacent to the roof tile in the girder direction is set to be at least 4.2 times the projecting dimension of the adjacent roof tile relative to the upper surface of the module.
[0019]
By this particular matter, in the part where another solar energy module is adjacent, the shadow of this adjacent solar energy module will not be located on the light receiving surface, but if it is adjacent to the roof tile in the girder direction In such a part, the shadow of the roof tile may be located on the light receiving surface. Therefore, by increasing only the width dimension of this portion of the frame, the shadow of the roof tile is positioned on the frame. As a result, the shadow of the roof tile is not located on the light receiving surface of the solar energy module. In addition, since the width of the frame is not set large in a portion where another solar energy module is adjacent, the area of the light receiving surface of the solar energy module can be sufficiently secured.
The reason for setting the above protruding dimension will be described below. When the solar energy module is installed at the northernmost tip of Japan (Wakkanai City) facing south-south, the elevation angle of the sun at 2:00 pm in the winter solstice is 13 ° 25 '. At this time, the length of the shadow is 4.19 times the height of the object forming the shadow. When this is applied to the relationship between the roof tile and the solar energy module, a shadow having a length of 4.19 times the protrusion dimension of the roof tile from the light receiving surface of the solar energy module is generated on the solar energy module. Become. When the shadow is located on the light receiving surface, the output of the solar energy module is reduced due to the influence of the shadow. In order to avoid such a situation, the width of the side frame material is set to 4.2 times the height difference between the adjacent roof tile and the module upper surface, and the shadow of the roof tile is reflected on the light receiving surface. It is trying not to reach. Thus, no matter where the solar energy module is installed in Japan, the shadow of the roof tile will not be located on the light receiving surface.
[0022]
Further specific configurations of the installation form of the solar energy module include the following. That is, the solar energy module is installed on the roof surface such that the solar energy module is partially overlapped with another solar energy module adjacent in the flow direction of the roof. In other words, the solar energy module has a so-called stepped roof structure. Thus, the area of the entire light receiving surface can be increased, and the output of the solar energy module can be further increased in combination with the fact that the shadow is not positioned on the light receiving surface.
[0025]
In addition, the following points can be cited as improvements of the frame material in which the width dimension is set large. That is, a recess extending along the flow direction of the roof is formed on the surface of the side frame material adjacent to the roof tile.
[0026]
According to this specific matter, the width of the frame material whose width is set to be large can be apparently made small, and it appears that the entire periphery of the solar energy module body is supported by the frame having substantially the same width. In addition, the appearance can be improved.
[0027]
In addition, when the surface height position of the side frame member is matched with the surface height position of the other frame members, the drainage of rainwater is good and dust accumulates on the solar energy module. Can be avoided, and the performance of the solar energy module can be maintained high.
[0028]
Furthermore, even in a solar energy system constructed by integrally assembling a plurality of the above-described solar energy modules, or in a house provided with this solar energy system on a roof surface, the shadow of the roof tiles is reflected on the light receiving surface of the solar energy module. , And a high output of the solar energy module can be obtained.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a case will be described in which a solar cell module is employed as a solar energy module and the solar cell module is directly laid on a roof of a house.
[0030]
FIG. 1 is a partially omitted perspective view showing a roof portion of a house on which a solar cell module 2 according to the present embodiment is laid. As shown in this figure, the roof 1 of the present house is of a gable type, which is a substantially central portion of a roof surface 11 on one side (for example, a roof surface facing the south side) 11 in the housing girder direction. A plurality of solar cell modules 2, 2, ... are laid from a substantially central portion in the flow direction to the eaves portion. On the other hand, a roof tile (not shown) is laid on the other roof surface (for example, a roof surface facing the north side) 12.
[0031]
Are arranged in a matrix in the direction in which the ridge extends and the direction in which the roof 1 is inclined. The solar cell module 2 has sufficient fire resistance (similar fire resistance to roof tiles). Therefore, roof tiles are not laid on portions where the solar cell modules 2, 2, ... are arranged, and the solar cell modules 2, 2, ... themselves are directly laid as roofing materials.
[0032]
-Configuration of solar cell module 2-
Hereinafter, the configuration of the solar cell module 2 will be described. The solar cell module 2 is provided with a solar cell module main body 4 as a solar energy module main body and a frame 5 as shown in FIGS. There are three types of solar cell modules 2 employed in the present embodiment. FIG. 2 is an exploded perspective view of the first type solar cell module 2. FIG. 3 is a side view of the solar cell module main body 4. 4 shows a first type of solar cell module 21. FIG. 4 (a) is a plan view, FIG. 4 (b) is a view taken in the direction of arrow B in FIG. 4 (a), and FIG. 4 (c) is a view. It is an arrow C view in 4 (a). 5A and 5B show a second type of solar cell module 22, in which FIG. 5A is a plan view, FIG. 5B is a view taken in the direction of arrow B in FIG. 5A, and FIG. It is an arrow C view in 5 (a). The third type solar cell module 23 (see FIG. 1) is symmetrical with respect to the second type solar cell module 22.
[0033]
Hereinafter, the configuration of the solar cell module 2 will be described as a representative of the first type of solar cell module 21. As shown in FIGS. 2 to 4, the solar cell module body 4 is a solar cell formed by connecting a plurality of solar cells 41a, 41a,... Formed of polycrystalline silicon in series or in parallel by an interconnector or the like. The cell array 41 is sandwiched between a white reinforced glass plate 43 forming a light receiving surface and a steel plate-containing film 44 forming a back surface via a filling material 42, 42,. Of the solar cell assembly. A terminal box 45 is attached to the back surface of the solar cell module body 4. An output cable 46 is led out of the terminal box 45. The solar cell 41a may be formed of single crystal silicon, amorphous silicon, or the like.
[0034]
The frame 5 holds four sides of the solar cell module body 4 as shown in FIGS. 2, 4 and 6 (an exploded perspective view of a portion VI in FIG. 4). An eave-side frame member 52 and a pair of left and right flared side frame members 53, 54 are provided. The frame members 51, 52, 53, 54 are integrally formed into a frame shape. FIG. 6 shows an assembly portion of the eave-side frame member 52 and the right-hand side flank frame member 54.
[0035]
Each of the frame members 51, 52, 53, 54 is formed by extrusion of aluminum. The ridge-side frame member 51 holds an edge of the solar cell module body 4 located on the house ridge side. The eaves-side frame member 52 holds an edge of the solar cell module body 4 located on the house eaves side. Each of the side frame members 53 and 54 hold the left and right side edges of the solar cell module main body 4 respectively, and connect both end edges of the ridge side frame member 51 and the eave side frame member 52 to each other.
[0036]
Next, the configuration of each of the frame members 51, 52, 53, 54 will be described in detail.
[0037]
First, the cross-sectional shape of the eave-side frame member 52 will be described with reference to FIGS. 6 and 7 (a cross-sectional view along the line VII-VII in FIG. 4). In the following description of the cross-sectional shape, it is assumed that the left side in FIGS. 6 and 7 is the outside forming the outer edge of the solar cell module 2, and the right side in each figure is the side supporting the solar cell module body 4, that is, the inside.
[0038]
The eave-side frame member 52 includes a frame main body 52a having a substantially square closed cross section. A fastening seat 52b for screwing the side frame members 53 and 54 is integrally formed inside the frame main body 52a. The eave-side frame member 52 includes a module holding piece 52c that extends vertically upward from the upper end of the outer end of the frame body 52a and is bent inward. A module holding groove 52d that is open inward is formed between the module holding piece 52c and the upper surface of the frame main body 52a. On the other hand, the eave-side frame member 52 includes a fixing seat 52e that extends outward from the lower end of the outer end of the frame body 52a, is bent downward, and is further bent inward. A fastening seat 52f for screwing the side frame members 53 and 54 is integrally formed inside the fixed seat 52e. As shown in FIG. 4, the fixing seat 52e has a bolt hole 52g for fastening to the ridge frame member 51 of another solar cell module 2 located on the eave side or to the eaves fixing metal member 6 described later. , 52g,... Are formed at a plurality of locations.
[0039]
Although the cross-sectional shape is not shown, the cross-sectional shape of the ridge-side frame member 51 is substantially the same as that of the eave-side frame member 52, and a module for holding the ridge-side edge of the solar cell module body 4 is provided. In addition to having a holding groove, bolt holes 51a, 51a,... For connecting other solar cell modules 2 located on the ridge side are formed at a plurality of locations (see FIG. 4).
[0040]
Next, the cross-sectional shape of the side frame member 54 will be described with reference to FIGS. 6 and 8 (a cross-sectional view along line VIII-VIII in FIG. 4). In the following description of the cross-sectional shape, the near side in FIG. 6 and the right side in FIG. 8 are defined as the outside constituting the outer edge of the solar cell module 2, and the far side in FIG. 6 and the left side in FIG. 8 support the solar cell module body 4. It is assumed to be on the side, that is, inside.
[0041]
In this case, the side frame member 54 has a plate-shaped main body 54a extending in the vertical direction. Both ends in the longitudinal direction (the left-right direction in FIG. 6) of the main body 54a substantially match the end shapes of the eave-side frame member 52 and the ridge-side frame member 51. In addition, screw holes 54b, 54b are formed at positions corresponding to the fastening seats 52b, 52f at both end edges. Flanges 54c, 54d, 54e extending outward in the horizontal direction are formed at the upper end, the lower end, and the intermediate portion between the upper end and the lower end on the outer surface of the main body 54a. On the other hand, flanges 54f and 54g extending in the horizontal direction are also formed at the upper end portion and the intermediate portion on the inner side surface of the main body portion 54a. A module holding groove 54h that is open inward is formed between the flanges 54f and 54g. Incidentally, the other side end frame member 53 also has the same cross-sectional shape.
[0042]
Next, a connection structure between the frame members 51, 52, 53, 54 will be described. Here, the connection structure between the eave-side frame member 52 and the non-eave-side frame member 54 will be described with reference to FIG. As shown in FIG. 6, the one end edge portion in the longitudinal direction of the side frame member 54 is superimposed on one end surface of the eave side frame member 52. Accordingly, the screw holes 54b, 54b of the side frame member 54 and the fastening seats 52b, 52f of the eave side frame member 52 are aligned. The two frame members 52 and 54 are connected to each other by screwing a screw (not shown) into the two. Similarly, the other end of the side frame member 54 and the side end portion of the ridge side frame member 51, the side end portion of the other side frame member 53 and the ridge side frame member 51 and the eave side frame are similarly provided. Each side end portion of the material 52 is also connected. In this way, the frame members 51, 52, 53, and 54 are connected to each other to form a frame 5 as shown in FIG.
[0043]
The fitting operation of the solar cell module main body 4 into each of the frame members 51, 52, 53, 54 is performed simultaneously with the above-described connection operation of the respective frame members 51, 52, 53, 54. In other words, these frame members 51, 52, 53, 54 are connected to each other while fitting the edges of the solar cell module body 4 into the module holding grooves 52d, 54h of the frame members 51, 52, 53, 54. Go. When the solar cell module body 4 is fitted, a water blocking member 55 made of, for example, EPDM rubber is fitted into the module holding grooves 52d and 54h, and the space between the solar cell module body 4 and the module holding grooves 52d and 54h is provided. Keep sealed. Thus, the solar cell module 2 is manufactured. In addition, in the solar cell module 2 of this embodiment, the white plate tempered glass 43 has a length of 1800 mm and a width of 540 mm. For this reason, in order to obtain sufficient strength, the height of each of the frame members 51 to 54 is set to about 30 mm.
[0044]
The above is the configuration of the first type solar cell module 21. On the other hand, the second type solar cell module 22 is different from the first type solar cell module 21 only in the width dimension of the side frame member 53 if it is one (left side in FIGS. 1 and 5). Similarly, the third type solar cell module 23 is different from the first type solar cell module 21 only in the width dimension of the side frame member 54 if it is the other (left side in FIG. 1). As shown in FIG. 1, the side frame members 53 and 54 are adjacent to the roof tile 7 when the solar cell modules 22 and 23 are installed on the roof surface. The width is set to be larger than that of the frame material. That is, in each of the solar cell modules 21, 22, and 23 described above, only the side frame members 53 and 54 that are adjacent to the roof tile 7 are set to have large width dimensions. The imaginary line in FIG. 8 indicates the shape of the side frame member 54 if the width dimension is set large. Hereinafter, the width dimension will be described.
[0045]
As shown in FIG. 1, the pitch in the flow direction of the roof 1 is different between the tile 7 and the solar cell module 2 (in the example shown in FIG. 1, the pitch of the tile 7 is half the pitch of the solar cell module 2). ing). For this reason, when the tile 7 and the solar cell module 2 are each stepped, there is a portion where the upper end of the tile 7 is partially located above the light receiving surface of the solar cell module 2. In this embodiment, the side frame member 53 having a dimension obtained by increasing the difference between the upper end of the roof tile 7 and the light receiving surface of the solar cell module 2 by 4.2 times at this location is adopted. Hereinafter, the reason will be described.
[0046]
From 9 am to 2 pm, if you want the solar cell modules 2,2, ... to generate power, move the solar cell modules 2,2, ... to the southernmost point at the northernmost point in Japan (Wakkanai City). , The elevation angle of the sun at 2:00 pm in the winter solstice (the day when the elevation angle of the sun is the smallest) is 13 ° 25 ′. At this time, the length of the shadow is 4.19 times the height of the object forming the shadow. When this is applied to the relationship between the roof tile 7 and the solar cell module 2, a shadow having a length of 4.19 times the protrusion size of the roof tile 7 from the light receiving surface of the solar cell module 2 is generated on the solar cell module 2. Will do. When the shadow is located on the light receiving surface, the output of the solar cell module 2 is reduced due to the influence of the shadow. In order to avoid such a situation, the width of the side frame member 53 is set to be 4.2 times the difference between the upper end of the roof tile 7 and the light receiving surface of the solar cell module 2 from 9:00 am to 2:00 pm During this period, the shadow of the roof tile 7 is prevented from reaching the light receiving surface.
[0047]
When the solar cell module 2 is to generate power between 8:00 am and 3:00 pm, the difference between the upper end of the roof tile 7 and the light receiving surface of the solar cell module 2 was multiplied by 8.8. It is necessary to employ the side frame material 53 if the dimensions are not sufficient. That is, similarly to the above, when the solar cell module 2 is installed at the northernmost point in Japan with the south-central direction, the elevation angle of the sun at 3:00 pm in the winter solstice is 6 ° 28 ′. In this case, the length of the shadow is 8.78 times the height of the object forming the shadow. When this is applied to the relationship between the roof tile 7 and the solar cell module 2, a shadow having a length of 8.78 times the protrusion dimension of the roof tile 7 from the light receiving surface of the solar cell module 2 occurs on the solar cell module 2. Will do. When the shadow is located on the light receiving surface, the output of the solar cell module 2 is reduced due to the influence of the shadow. In order to avoid such a situation, the width of the side frame member 53 is set to 8.8 times the difference between the upper end of the roof tile 7 and the light receiving surface of the solar cell module 2 from 8:00 am to 3:00 pm During this period, the shadow of the roof tile 7 is prevented from reaching the light receiving surface.
[0048]
-Explanation of installation procedure of solar cell module 2-
Next, a procedure for mounting the solar cell module 2 configured as described above will be described.
[0049]
As shown in FIG. 9, first, the eaves fixing bracket 6 is fixed to the eaves part of the roof. The eaves fixing bracket 6 has a substantially L-shaped cross section, and includes a main body 61 on which the eaves-side frame member 52 of the solar cell module 2 is mounted, and ribs extending from the lower end of the main body 61 along the roof surface. 62. In the eaves fixing bracket 6, screw holes are respectively formed in the upper surface of the main body 61 and the ribs 62, and the wood screws 63 are inserted into the screw holes formed in the ribs 62, so that the roof surface ( Field board, etc.).
[0050]
After the fixing operation of the eaves fixing bracket 6, the operation proceeds to the operation of installing the solar cell modules 2, 2,. First, the eaves-side frame member 52 of the solar cell module 2 located closest to the eaves is placed on the main body 61 of the eaves fixing bracket 6. At this time, the screw hole 52g of the eave-side frame member 52 and the screw hole of the main body 61 of the eave-point fixing bracket 6 are aligned, and the screw 56 is screwed from above so that the eave-side edge of the solar cell module 2 is removed. It is fixed to the roof surface via the eaves fixing bracket 6.
[0051]
Next, the eave-side frame member 52 of the solar cell module 2 located second from the eaves side is fixed to the ridge-side frame member 51 of the fixed solar cell module 2. That is, the screw hole 52g of the eaves-side frame member 52 is aligned with the screw hole 51a of the ridge-side frame member 51, and a screw (not shown) is screwed in from above, so that the second solar cell module 2 from the eaves side is screwed. Is fixed on the solar cell module 2 located closest to the eaves.
[0052]
In this way, the solar cell modules 2, 2, ... are laid directly on the roof of the house in order from the eaves side to the ridge side. Specifically, as shown in FIG. 1, the second type solar cell modules 22, 22,... Are provided with the third type of solar cell modules 23, 23, respectively. The first type solar cell modules 21, 21,... Are installed in other parts. Thus, a solar cell array, which is an aggregate of a plurality of solar cell modules 2, 2,..., Is completed.
[0053]
Power is generated by irradiating the solar cell system composed of the plurality of solar cell modules 2, 2,... Installed on the roof surface with sunlight. In particular, when the morning sun is irradiated, the shadow of the roof tile 7 located on the right side of the solar cell module in FIG. 1 is located on the adjacent solar cell module 23 in FIG. At this time, as shown in FIG. 10 (a), the shadow thereof (the hatched portion in the figure) is only located on the side frame member 54, and the solar cells 41a, 41a,. It is not positioned on the light receiving surface. Therefore, all the solar cells 41a, 41a,... Are effectively irradiated with sunlight to generate power. Similarly, when the sunset is irradiated, the shadow of the roof tile 7 located on the left side of the solar cell module in FIG. 1 is located on the adjacent solar cell module 22 in FIG. Also at this time, as shown in FIG. 10B, the shadow (the hatched portion in the figure) is only located on the side frame member 53 if it is not, and the solar cells 41a, 41a,. It is not located on the opposing light receiving surface. Therefore, all the solar cells 41a, 41a,... Are effectively irradiated with sunlight to generate power. As described above, in this embodiment, power generation is effectively performed in all the solar cells 41a, 41a,... Irrespective of the elevation angle of the sun. Therefore, a high output of the entire system can be obtained.
[0054]
The dimensions of the solar cell module 2 and the roof tile 7 employed in this embodiment will be specifically described. The height of the solar cell module 2 and the height of the roof tile (flat roof) 7 are both 30 mm, and the width pitch of the roof tile 7 is 30 mm. Is 300 mm, the pitch in the flow direction of the roof is 280 mm, and the pitch in the flow direction of the roof of the solar cell module 2 is 560 mm. In this case, as shown in FIG. 10, the roof tile 7 is approximately half the thickness of the roof 7 of the solar cell module 2 at 15 mm (dimension T in the figure), which is approximately half the thickness of the roof of the solar cell module 2, as shown in FIG. It protrudes upward. Therefore, in the present embodiment, the width dimension (dimension W in the drawing) of the flanking frames 53 and 54 adjacent to the roof tile 7 is set to 63 mm (15 mm × 4.2).
[0055]
As described above, in the present embodiment, the solar cell modules 21, 22 and 23 differ from each other only in the side frame members 53 and 54, and the solar cell module body 4 is common. For this reason, it is not necessary to prepare a plurality of types of solar cell module main bodies in advance corresponding to the tiles 7 adjacent to each other, and any tile 7 can be adjacent to the tiles 7 while reducing the manufacturing cost of the solar cell module 2. However, it is possible to avoid a situation where the shadow of the tile 7 is located on the light receiving surface and the output is reduced.
[0056]
In addition, since the upper surfaces of the frame members 51 to 54 are substantially flush with each other, the drainage of rainwater is good, and the accumulation of dust on the solar cell module 2 can be avoided.
[0057]
-Modification-
Next, a modified example of the present invention will be described. In the above-described embodiment, if the width is set to be large, the upper surfaces of the side frame members 53 and 54 are formed as flat surfaces flush with the upper surfaces of the other frame members 51 and 52. In this modification, instead of this, as shown in FIG. 11 (showing the second type of solar cell module 22), if the width dimension is set to be large, the upper surface of the side frame member 53 is partially recessed. Thus, a concave portion 53a extending in the longitudinal direction of the frame member 53 (the flow direction of the roof) is formed. More specifically, the formation position of the concave portion 53a is such that the dimension (dimension S in the figure) between the inner edge of the flank frame member 53 (the right edge in FIG. 11) is the width dimension of the other flank frame member 54. Is set to match.
[0058]
According to this, apparently, both sides of the solar cell module main body 4 appear to be supported by the side frame members 53 and 54 if the width dimensions are equal. The outer portion (portion A in FIG. 11) can be made to look like a roof with individual tiles, and the appearance can be improved.
[0059]
Note that a similar concave portion may be formed in the side frame member 54 of the third type solar cell module 23.
[0060]
-Other embodiments-
In the above-described embodiment, a case has been described in which the solar cell modules 2, 2,... Are employed as solar energy modules, and the solar cell modules 2, 2,. The present invention is not limited to this, and it is also possible to employ a solar water heater module as the solar energy module.
[0061]
Further, the present invention is not limited to a house having a gable type roof 1, but can be applied to a house having a ridge type roof.
[0062]
Further, in the above embodiment, a tile is used as an object that creates a shadow on the solar cell module 2, but the present invention is not limited to this, and other roof materials and building materials may be used.
[0063]
【The invention's effect】
As described above, in the present invention, a portion where the shadow of the roof tile is likely to be located on the light receiving surface of the solar energy module is replaced with a frame for supporting the solar energy module body. It is constituted as. In other words, among the plurality of frame members supporting the outer edge portion of the solar energy module body, the width dimension of the side frame member is set to be larger than the width dimensions of the other frame members if it is adjacent to the roof tile in the girder direction. . The width of the frame material adjacent to the roof tile is set to be at least 4.2 times the projecting dimension of the adjacent roof tile relative to the upper surface of the module. For this reason, even if the solar energy module is installed at the northernmost point in Japan, the above-mentioned shadow will not be located on the light receiving surface throughout the year. For this reason, even if the solar energy module is installed in any region in Japan, high-output solar energy can be obtained throughout the year. Also, each solar energy module is different only in the frame material, and the solar energy module body is common. For this reason, it is not necessary to prepare in advance a plurality of types of solar energy module main bodies in accordance with the roof tiles adjacent to each other. In addition, it is possible to avoid a situation in which a shadow is located on the light receiving surface and the output is reduced.
[0064]
In addition, when the solar energy module is laid on the roof in a so-called stepped shape, the area of the entire light receiving surface can be increased, and the solar energy module can be prevented from being positioned on the light receiving surface. The output of the module can be further increased, and a highly practical solar energy system can be constructed.
[0066]
When a recess extending along the flow direction of the roof is formed on the surface of the side frame material adjacent to the roof tile, the width of the side frame material can be apparently reduced. For this reason, it seems that the entire periphery of the solar energy module main body is supported by the frame material having substantially the same width, so that the appearance can be improved, and the external appearance of the entire house can be improved.

[0067]
Furthermore, when the surface height position of the frame material whose width dimension is set to be large is matched with the surface height position of another frame material, the drainage of rainwater is good and the solar energy module The accumulation of dust can be avoided, the performance of the solar energy module can be maintained high, and the reliability of the solar energy module can be improved.
[0068]
In addition, when a solar energy system is constructed by integrally assembling a plurality of the above-described solar energy modules, it is possible to increase the output of the system. Further, when this solar energy system is provided on the roof surface of a house, the system can sufficiently cover the power consumed by the house.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a roof portion of a house on which a solar cell module according to an embodiment is laid.
FIG. 2 is an exploded perspective view of the solar cell module.
FIG. 3 is a side view of a solar cell module main body.
4 (a) is a plan view, FIG. 4 (b) is a view taken in the direction of arrow B in FIG. 4 (a), and FIG. 4 (c) is a view in FIG. 4 (a). FIG.
5 (a) is a plan view, FIG. 5 (b) is a view taken in the direction of arrow B in FIG. 5 (a), and FIG. 5 (c) is a view in FIG. 5 (a). FIG.
FIG. 6 is an exploded perspective view of a portion VI in FIG. 4;
FIG. 7 is a sectional view taken along line VII-VII in FIG.
FIG. 8 is a sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a diagram for explaining a procedure for mounting a solar cell module.
FIG. 10 is a perspective view for explaining a position of a shadow on a solar cell module.
FIG. 11 is a plan view of a solar cell module according to a modification.
FIG. 12 is an exploded perspective view of a conventional solar cell module.
FIG. 13 is a cross-sectional view showing a state where the solar cell module is supported by the module frame.
FIG. 14 is a diagram corresponding to FIG. 9 in a conventional example.
FIG. 15 is a cross-sectional view of a roof in a conventional example viewed from an eaves side toward a ridge side.
[Explanation of symbols]
1 roof
2 Solar cell module (solar energy module)
4 Solar cell module body (solar energy module body)
5 Frame
51 Building frame material
52 eaves side frame material
53,54 Keraba side frame material
53a recess
7 tiles (roofing materials)

Claims (6)

In a solar energy module, a roof tile is laid on a roof surface adjacent to the roof tile, and an outer edge portion of the solar energy module body is supported by a plurality of frame members.
Of the above frame materials, the width dimension of the side frame material is set to be larger than the width dimensions of the other frame materials if it is adjacent to the roof tile in the girder direction ,
A solar energy module , wherein the width dimension of the frame member adjacent to the roof tile in the beam direction is set to be at least 4.2 times the protruding dimension of the adjacent roof tile relative to the upper surface of the module. The solar energy module according to claim 1 ,
A solar energy module, wherein a part of the solar energy module is overlapped with another solar energy module adjacent in the flow direction of the roof and installed on the roof surface. The solar energy module according to claim 1 or 2 ,
A solar energy module, characterized in that a recess extending along the flow direction of the roof is formed on the surface of the side frame material adjacent to the roof tile. The solar energy module according to any one of claims 1 to 3 ,
A solar energy module, wherein a surface height position of a side frame material adjacent to a roof tile is matched with a surface height position of another frame material. A solar energy system comprising a plurality of the solar energy modules according to any one of claims 1 to 4 integrally assembled. A house provided with the solar energy system according to claim 5 on a roof surface.

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