JP3528410B2 - Roof panel with photovoltaic function - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a roof panel having a photovoltaic function in a roof-integrated power generation system.

[0002]

2. Description of the Related Art Recently, as the manufacturing cost of solar cell elements has been reduced, solar power generation using solar cells, which is friendly to the global environment, is becoming popular in general households. As a solar cell installation structure in a general home, a roof-standing type in which a plurality of solar cell modules are installed on a roof of a house and a roof-integrated type in which a roof is configured with a roof panel incorporating solar cells are known. . As the installation structure of the solar cell module in the roof-integrated type, the solar cell module is installed on the base plate with a certain gap through a support standing on the rafter, and the gap between the solar cell module and the base plate is set to the solar cell. There has been proposed a structure in which a ventilation layer for cooling a module is provided (see Ministry of International Trade and Industry publication No. 13305 April 27, 1995 issue).

[0003]

In the roof-integrated power generation system, it is necessary for the roof panel to have durability, waterproofness, and fireproofness equivalent to those of a general roof. Regarding durability and waterproofness, various technologies are proposed, such as assembling the solar cell panel on the frame body or providing a waterproof sheet on the back side of the solar cell panel and sticking its outer edge to the frame body. It has become possible to obtain sufficient performance, but with regard to fireproofness, since tempered glass is arranged on the surface portion of the solar cell panel, although fireproofness against jumping fire and the like is sufficiently obtained, The current situation is that fire protection measures at the connection between the roof panel and the girder and the eaves are not yet fully considered.

An object of the present invention is to provide a roof panel having a photovoltaic function capable of sufficiently securing fireproofness of the eaves.

[0005]

A roof panel having a photovoltaic function according to claim 1 is made of an amorphous silicon semiconductor.
The made solar panels a roof panel having a photovoltaic function assembled integrally with the frame, eaves of the roof panel
Roof panel that closes the opening of the frame on the front side of the front half
Provided Le, at least eaves from the fire plate is provided consisting of incombustible which closes the opening of the back to the frame until the digit, the frame body from the eaves to the position facing to the digit of the roof panel to the attic of the roof panel A partition member made of a noncombustible material is provided to close the passage . Here, as described in claim 2, it is a preferred embodiment that a roofing material made of an incombustible material is provided in the range of about 800 mm from the eaves instead of the solar cell panel.

[0006]

In the roof panel having the photovoltaic function according to claim 1, since the fireproof plate made of a noncombustible material is provided on at least the back surface of the roof panel from the eaves to the girder, the fireproofness of the eaves part of the roof panel is improved. Get higher Further, by providing the roof panel with a partition member made of an incombustible material, it is possible to prevent the spread of fire from the eaves to the back of the hut. As described in claim 2, when a roofing material made of non-combustible material is provided in the range of about 800 mm from the eaves instead of the solar cell panel, the entire eaves part is covered with the fireproof plate and the roofing material. The fire resistance of the eaves part is further improved.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the roof structure of the house 1 is a rafter on a roof structure member of a general Western-style roof structure in which a plurality of purlins 4 are arranged in parallel between purlins 2 and girders 3 at regular intervals. Instead of the base plate and roof tile, a plurality of roof panels 10 and 11 extending over the purlin 2, the skylight 5, and the skylight 5 and the girder 3 are arranged side by side in parallel. That is, in the rooftop group of this house 1, a plurality of roof panels 10, 1
1 will function as rafters, field boards and roof tiles. It is also possible to omit the skylight 5 and provide the roof panel 10 from the purlin 2 to the girder 3. Further, the present invention can be similarly applied to a Japanese-style house group house by arranging a plurality of roof panels 10 and 11 instead of the rafters, the ground boards, and the roof tiles.

As shown in FIGS. 2 to 4, the roof panels 10 and 11 are solar cell panels 1 which are sequentially laminated from the front side.
2, a waterproof sheet 13, a heat insulating material 14, and a frame body 15 as a frame surrounding the outer peripheral portions of these three members. However, since the roof panel 10 has the same structure as the ridge-side half of the roof panel 11, detailed description thereof will be omitted.

The frame 15 is a pair of left and right side frames 16.
And a pair of connecting frames 17 that connect the front and rear ends of both side frames 16 to each other, and are formed in a substantially rectangular frame shape.
By connecting with 8, it is possible to increase the strength against twisting and bending. However, the strength of the frame body 15 can be improved by providing a plate-like member that closes the inside of the frame body 15 instead of the pier 18, or by providing a plate-like member that closes the inside of the frame body 15 above the pier 18. May be further increased. Further, the frame body 15 is preferably made of a wood-based member such as a lumber or plywood in order to improve workability at the site.
It may be made of aluminum alloy or the like.

In the latter half of the inside of the frame body 15, the heat insulating material 14 is provided over the entire area in a state of being placed on the pier 18. As the heat insulating material 14, polystyrene foam, polyethylene foam, rigid polyurethane foam, flexible polyurethane foam, rigid vinyl chloride foam, urea foam, which has excellent heat insulating properties, heat retaining properties, and heat storage properties,
It is possible to use foamed / porous materials such as phenol foam and polypropylene, fiber materials such as rock wool, glass wool, and ceramic fibers, and lightweight cellular concrete.

The upper end of the front half of the frame 15 is formed in a stepped shape, and a roof base panel 6 made of plywood for closing the opening of the front half of the frame 15 is attached to the stepped part 19. There is. The roof base panel 6 further enhances the strength of the frame body 15 against twisting.

A sheet-like waterproof sheet 13 made of special rubberized asphalt compound, polyisobutylene, or the like is adhered over the upper surface of the frame body 15, the roof base panel 6 and the upper surface of the heat insulating material 14, and further the waterproof sheet 13 is attached. The outer edge portion is attached along the peripheral surface of the frame body 15. As described above, by covering the portion other than the lower surface of the frame body 15 with the waterproof sheet 13, rainwater and the like can be prevented from entering the frame body 15. However, the waterproof sheet 13 should not be attached to the front surface of the frame body 15 of the roof panel 11 even at the factory shipment stage.
As will be described later, when the roof panel 11 is attached to the framework of the house 1 at the construction site, it is attached to the nose alignment 31.

A waterproof material 38 in which a fibrous material is impregnated with asphalt is provided on the roof base panel 6 with a waterproof sheet 13 sandwiched therebetween, and a roofing material 34 made of a cement molded plate is provided on the waterproof material 38. ing. This roofing material 34
Is provided over the length of about 800 mm from the eaves to the ridge side in order to improve fire protection against flying fires and the like. However, it is preferable that the roofing material 34 be extended to the ridge side as much as possible within the range allowed by the installation space of the solar cell panel 12 in order to enhance fire protection. If the waterproof sheet 13 has sufficient waterproofness, the waterproof material 38 may be omitted.

A fireproof plate 35 made of a non-combustible material such as a cement molded plate is provided on the lower surface of the frame body 15 over the girder 3 from the eaves end, and the rear end of the fireproof plate 35 is provided with the frame body 15 and the girder 3. The frame body 1 that is sandwiched between them and is located on the eaves side of the girder 3 by the fire prevention plate 35.
The opening 5 is closed. In other words, this fire plate 35
As a result, it is possible to prevent the fire of the frame body 15 from being caused by a fire or the like in the next house, and also to prevent the inflow of flame or smoke from the lower surface side of the eaves to the back of the shed.

A partition plate 36, which extends into the frame 15 and has its upper end abutted or adhered to the lower surface of the roof base panel 6, is provided upright in the vicinity of the rear end of the fireproof plate 35. Then, the partition plate 36, and functions as a partition member for closing the passage continuing from the eaves to the attic, in the case of fire plate 35 is damaged even flame and smoke to the cabin rear by a partition plate 36 entering Will be blocked. The partition plate 36 is most preferably formed at a position facing the girder 3, but may be arranged on the eaves side of the girder 3 as in the illustrated example. Further, a plurality of partition plates 36 may be provided to more effectively block flames and smoke.

A heat insulating material 37 made of an incombustible material is provided in the frame body 15 on the lower side of the rear half of the roof base panel 6, and the heat insulating material 3 is provided with the roof panel 11 assembled to the frame.
7 is arranged between the girder 3 and the roof base panel 6 with the pier 18 interposed therebetween. Then, similar to the partition plate 36 described above, the heat insulating material 37 functions as a partition member that closes the passage extending from the eaves to the back of the shed. However, one of the partition plate 36 and the heat insulating material 37 can be omitted. As the heat insulating material 37, a vinyl chloride foam mixed with calcium carbonate,
It is possible to use high-density glass wool or the like.

Roof base panel 6 and rear connecting frame 1
Between two solar cell panels 12, two solar cell panels 12 are provided on the heat insulating material 14 with the waterproof sheet 13 sandwiched therebetween with a slight gap in the front and back, and the sealing material 20 is filled between the adjacent solar cell panels 12. Has been done. Two solar panels 12
The outer peripheral portion of the row is fixed to the frame body 15 in a watertight manner via a fixing member 21 and a filler 22. However, the number of solar cell panels 12 mounted on one roof panel 11 may be set to a number other than two. In addition, adhesive parts may be formed on both sides of the waterproof sheet 13 and the solar cell panel 12 may be attached to the heat insulating material 14 via the waterproof sheet 13, or the solar cell panel 12 may be continuously provided.
You may provide the transparent cover member which covers the upper surface of the solar cell panel 12 over the solar cell panels 12 of one sheet. Reference numeral 23 is a rod-shaped ceramic for positioning the front edge of the solar cell panel 12.

As shown in FIG. 5, the solar cell panel 12 includes a transparent substrate 25 made of tempered glass, laminated glass, or other general material, and amorphous silicon formed on the lower surface of the transparent substrate 25. Solar cell element layer 26 made of a system semiconductor, and E provided under solar cell element layer 26
It has a general configuration including a filler 27 made of VA, PVB, polyisobutylene-based resin or the like, and a back sheet 28 provided below the filler 27.

Thus, as the solar cell panel 12,
Although it is made of an amorphous silicon semiconductor,
Since the heat insulating material 14 is arranged on the back surface side of the solar cell panel 12, the solar cell panel 12 can be heated to 80 to 80% by solar heat alone.
It is possible to raise the temperature to 90 ° C., which prevents a decrease in power generation efficiency due to photodegradation of the solar cell element.
A metal plate is provided over the entire surface of the roof panel 11 between the solar cell panel 12 and the waterproof sheet 13, between the waterproof sheet 13 and the heat insulating material 14, and on at least one of the lower sides of the heat insulating material 14.
The fireproof property may be further improved.

Next, the roof panel 1 for the framework of the house 1
The mounting structure of 1 will be described. The roof panel 11 is set on the girder 3 and the purlin 4 with the solar cell panel 12 facing upward, and is fixed to the girder 3 and the purlin 4 with nails or bolts (not shown). Further, the roof panels 11 are also connected and fixed to each other by nails or bolts (not shown). In this state, the fireproof plate 35 is attached to the connecting portion between the roof panel 11 and the girder 3.
The rear end of the rear is clamped.

The nose alignment 31 made of square timber is provided on the front surface of the connecting frame 17 on the eaves side of the plurality of roof panels 11.
A heat insulating material 32 made of cotton-like ceramic fiber is provided on the front side of the nose alignment 31, and a fireproof plate 33 made of a zinc iron plate or the like so as to hold the heat insulating material 32 and the nose alignment 31 in the connecting frame 17. Is provided. in this way,
The eaves part of the roof panel 11 includes a roofing material 34 and a fireproof plate 3
Since it is entirely covered by 3, 35, sufficient fire protection can be obtained.

Next, a fireproof test conducted using the roof panel 11 will be described. A roof panel 11 having a structure shown in FIG. 2 having a width of 900 mm and a length of 1900 mm is used, and as shown in FIG.
According to No. 34, a fire prevention test was performed under the conditions of a heating time of 20 minutes and a maximum temperature of 781 ° C. As a result, neither the roof base panel 6 nor the frame 15 was ignited, and the glass transparent substrate 25 of the solar cell panel 12 was not damaged.

Next, another embodiment in which the structure of the roof panel 11 is partially changed will be described. The same members as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. (1) As in the roof panel 11A shown in FIG. 7, instead of the fireproof plate 35 and the heat insulating material 37, the eaves on the lower surface of the frame 15 and the position corresponding to the front edge of the solar cell panel 12,
A fireproof plate 35A that closes the opening of the frame 15 may be provided, and a heat insulating material 37A that closes the gap between the roof panel 11A and the girder 3 may be provided between the fireproof plate 35A and the girder 3. (2) Like the roof panel 11B shown in FIG. 8, instead of the fireproof plate 35 and the heat insulating material 37, the girder 3 and the roof base panel 6
A heat insulating material 37B may be provided to close the gap between them, and a fire preventive plate 35B to close the opening of the frame body 15 from the eaves to the heat insulating material 37B may be provided on the lower surface of the frame body 15.

[0024]

According to the roof panel having the photovoltaic function of the first aspect, the fireproofing of the eaves portion can be achieved by providing a fireproof plate made of an incombustible material on at least the back surface of the roof panel from the eaves to the girder. It is possible to improve the property and effectively prevent the fire from burning on the roof panel due to the fire of the neighboring house. In addition, by providing the roof panel with a partition member made of an incombustible material, it becomes difficult for flames to enter the roof of the shed from the eaves, and it is possible to prevent the spread of fire to the roof of the shed.

As described in claim 2, about 800 from the eaves
If a roofing material made of noncombustible material is provided in the range of mm instead of the solar cell panel, the fireproof property of the eaves part is further improved. In addition, the solar panel is about 800 from the eaves
Since it is set back mm, it is possible to effectively prevent the glass of the solar cell panel from being damaged by the heat of a fire or the like in the next house, and it is also possible to prevent the heat insulating material provided on the back side of the solar cell panel from burning. , The fire safety is also improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a Western-style shed assembly including a roof panel according to the present invention.

[Fig. 2] Vertical cross-section around the eaves of the Western-style house

FIG. 3A is a plan view of a roof panel according to the present invention,
(B) is the same vertical section

[Figure 4] Vertical sectional view of the roof panel near the eaves

FIG. 5 is a vertical sectional view of a solar cell panel.

FIG. 6 is an explanatory diagram of a test method for a fire prevention test.

FIG. 7 is a vertical sectional view of a roof panel according to another embodiment.

FIG. 8 is a vertical sectional view of a roof panel according to another embodiment.

[Explanation of symbols]

1 House 2 Purlin 3 Girder 4 Purlin 5 Skylight 6 Roof Base Panel 10 Roof Panel 11 Roof Panel 12 Solar Panel 13 Waterproof Sheet 14 Heat Insulation Material 15 Frame 16 Side Frame 17 Connection Frame 18 Jet Wood 19 Step Drop 20 Sealing Material 21 Fixed Metal fitting 22 Filling material 23 Rod-shaped ceramics 25 Light transmissive substrate 26 Solar cell element layer 27 Filling material 28 Backsheet 30 Filling material 31 Nose alignment 32 Heat insulating material 33 Fireproof plate 34 Roofing material 35 Fireproof board 36 Partition board 37 Heat insulating material 38 Waterproof material 11A Roof panel 35A Fire plate 37A Insulation material 11B Roof panel 35B Fire plate 37B Insulation material

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI E04C 2/52 E04D 3/35 A E04D 3/35 3/40 V 3/40 E04C 2/50 R H01L 31/042 H01L 31 / 04 R

Claims (2)

(57) [Claims] 1. A roof panel having a photovoltaic function in which a solar cell panel made of an amorphous silicon-based semiconductor is integrally assembled to a frame body, and the frame is provided on the front surface side of the front half of the roof panel. Body opening
A roof base panel to be closed is provided, and a frame is provided on at least the back side of the roof panel from the eaves to the girder.
The fire plate made of incombustible material which closes the opening of the body is provided, provided with a partition member made of incombustible material that closes the frame body passageway into the attic from eaves at the position facing to the digit of the roof panel, that A roof panel with a characteristic photovoltaic function. 2. The roof panel having a photovoltaic function according to claim 1, wherein a roofing material made of an incombustible material is provided in the range of about 800 mm from the eaves instead of the solar cell panel.