Roof integrated photovoltaic generation apparatus of water leak proof structure with improved drainage

Abstract

The present invention relates to a roof-integrated photovoltaic power generation device with a leak-prevention structure having improved drainage performance, wherein multiple inclined drainage rails are arranged at an angle on the lower side of the front-rear boundary between multiple photovoltaic panels to receive rainwater leaking through the front-rear boundary between multiple photovoltaic panels and rainwater flowing in from multiple horizontal drainage rails to induce a downward flow of rainwater, and multiple drainage rail couplers are connected on one side to the inner side of the inclined drainage rail located on the lower side among two inclined drainage rails adjacent to each other in the front-rear direction, and on the other side to the outer side of the inclined drainage rail located on the upper side, thereby enabling smooth drainage without leakage.

Description

Technology Field

[0001] This invention relates to a roof-integrated photovoltaic power generation device that combines the functions of a building roof and photovoltaic power generation. Background Technology

[0002] Roof-integrated photovoltaic (BIPV) systems are a type of Building Integrated Photovoltaic (BIPV) system that integrates a building's roof with photovoltaic modules capable of generating electricity from solar energy. Because BIPV systems combine the functions of a building's roof with solar power generation, they offer various advantages, such as eliminating the need for a separate installation space and allowing the building's aesthetic appearance to be maintained. These systems are typically implemented in the form of large-area roofs. Consequently, the various materials constituting these systems are manufactured by dividing them into unit materials of a specific size to facilitate transportation and construction.

[0003] For example, solar power generation systems are manufactured by dividing them into multiple solar panels, and various materials supporting these panels are also manufactured by dividing them into units of a specific size. Consequently, leakage frequently occurs through gaps in numerous joints, such as the seams between solar panels and the seams of the supporting materials. Leakage issues in roof-integrated photovoltaic (ROP) systems are continuously being reported, acting as an obstacle to their widespread application in new buildings. To address this problem, various ROP systems with leak-prevention structures are emerging.

[0004] Most roof-integrated photovoltaic (PV) power generation devices, such as Korean Registered Patent No. 10-2313042 "Roof-integrated photovoltaic power generation facility" and Korean Registered Patent No. 10-2433542 "Roof-integrated photovoltaic power generation system equipped with multiple waterproof structures," are equipped with drainage means, such as inclined drains, to solve leakage problems at multiple joints, including the seams between multiple solar panels. However, in conventional roof-integrated PV devices, if the amount of leakage flowing down through the gaps at multiple seams, such as the seams between multiple solar panels, increases due to heavy rain, rainwater overflows from the drains, causing leakage to occur on the underside of the roof-integrated PV device. The problem to be solved

[0005] The invention provides a roof-integrated photovoltaic power generation device that allows for the smooth drainage of rainwater leaking through the front-to-back boundaries between multiple solar panels as well as rainwater leaking through the left-to-right boundaries between multiple solar panels, and ensures that smooth drainage is maintained without leakage even when multiple inclined drainage rails are arranged in a line. The invention is not limited to the technical problems described above, and other technical problems may be derived from the following description. means of solving the problem

[0006] A roof-integrated photovoltaic power generation device according to the present invention comprises: a plurality of photovoltaic panels, each formed in the shape of a square panel and arranged in a matrix structure so as to be adjacent to one another; a plurality of horizontal drainage rails arranged horizontally below the left-right boundary between the plurality of photovoltaic panels to receive rainwater leaking through the left-right boundary between the plurality of photovoltaic panels; and a plurality of inclined drainage rails arranged obliquely below the front-rear boundary between the plurality of photovoltaic panels to receive rainwater leaking through the front-rear boundary between the plurality of photovoltaic panels and rainwater flowing in from the plurality of horizontal drainage rails to induce a downward flow of rainwater. and includes a plurality of drainage rail couplers, each positioned between two adjacent inclined drainage rails in the front-rear direction among the plurality of inclined drainage rails, with one side coupled to the inner side of the inclined drainage rail located on the lower side among the two adjacent inclined drainage rails in the front-rear direction and the other side coupled to the outer side of the inclined drainage rail located on the upper side, thereby connecting the two adjacent inclined drainage rails in the front-rear direction.

[0007] Each of the above-mentioned inclined drainage rails is formed in a cross-sectional shape of "[" and includes a main inclined drainage section that receives rainwater leaking through the front-rear boundary between the plurality of solar panels and rainwater flowing in from the plurality of horizontal drainage rails to induce a downward flow of rainwater, and one side of each drainage rail coupler is coupled to the inside of the main inclined drainage section of the inclined drainage rail located on the lower side, and the other side of each drainage rail coupler can be coupled to the outside of the main inclined drainage section of the inclined drainage rail located on the upper side.

[0008] Each of the above drainage rail couplers may include an inner coupling portion that is coupled to the inner side of the lower of the two inclined drainage rails adjacent to each other in the front-rear direction, with a structure that is in close contact with the upper surface of the bottom plate and the inner surface of the side plates of the main inclined drainage section of the inclined drainage rail located on the lower side.

[0009] The upper portions of the side plates of the main inclined drainage section are formed in an "I" shape with cross-sections symmetrical to each other so that the outer surfaces and inner surfaces of both sides are recessed, and the upper portions of the side plates of the inner coupling section are formed in an "L" shape with cross-sections symmetrical to each other so that the outer surfaces of both sides protrude and the inner surfaces of both sides expand. The inner coupling section can be coupled to the inner side of the inclined drainage rail located on the lower side among two inclined drainage rails adjacent to each other in the front-rear direction, in a structure in which the protruding portions of the outer surfaces of the upper portions of the side plates of the inner coupling section are fitted into the recessed portions of the inner surfaces of the upper portions of the side plates of the main inclined drainage section of the inclined drainage rail located on the lower side while the inner surface of the bottom plate of the main inclined drainage section of the inclined drainage rail located on the lower side.

[0010] Each of the above inclined drainage rails may further include an outer coupling part that is coupled to the outer side of the inclined drainage rail located on the upper side among two inclined drainage rails adjacent to each other in the front-rear direction, such that each of the above drainage rail couplers is structured to be in close contact with the lower surface of the bottom plate of the main drainage of the inclined drainage rail located on the upper side and the outer surface of the side plates.

[0011] The upper portions of the side plates of the main inclined drainage section are formed in an "I" shape with symmetrical cross-sections such that the outer surfaces and inner surfaces of both sides are recessed, and the upper portions of the side plates of the outer coupling section are formed in an "L" shape with symmetrical cross-sections such that the outer surfaces of both sides protrude and the inner surfaces of both sides expand. The outer coupling section can be coupled to the outer side of the inclined drainage rail located on the upper side among two inclined drainage rails adjacent to each other in the front-rear direction, in a structure in which the recessed portions of the outer surfaces of the upper portions of the side plates of the main inclined drainage section of the inclined drainage rail located on the upper side are covered by the expanded portions of the inner surfaces of the upper portions of the side plates of the outer coupling section, while the outer coupling section is in close contact with the lower surface of the bottom plate of the main inclined drainage section of the inclined drainage rail located on the upper side.

[0012] Each of the above inclined drainage rails may further include a central inclined drainage section formed as a partition protruding from the longitudinal center of the upper surface of the bottom plate of the main inclined drainage section so that the interior of the main inclined drainage section is divided into two separate spaces, thereby supporting two solar panels adjacent to each other in the left-right direction among the plurality of solar panels, and simultaneously accommodating rainwater leaking through the front-rear boundary between the two solar panels adjacent to each other in the left-right direction to induce a downward flow of rainwater.

[0013] The central inclined drainage section is formed in the form of a partition having an upper section with a "C" shape cross section open at the top and flat protruding plates on both the left and right sides, and is structured such that two solar panels adjacent to each other in the left and right directions are mounted on the protruding plates on both sides of the central inclined drainage section to support the two solar panels adjacent to each other in the left and right directions, and the upper section of the "C" shape cross section of the central inclined drainage section can receive rainwater leaking through the front-rear boundary between the two solar panels adjacent to each other in the left and right directions, thereby inducing a downward flow of rainwater.

[0014] Each of the above inclined drainage rails may further include a left inclined drainage section formed in the shape of a wing plate protruding to the left from the left side of the central inclined drainage section, which supports the horizontal drainage rail located on the left among two horizontal drainage rails adjacent to each other in the left-right direction among the plurality of horizontal drainage rails, and at the same time receives rainwater descending along the outer surface of the horizontal drainage rail located on the left to induce a downward flow of rainwater.

[0015] The above-mentioned left inclined drainage section is formed in the shape of a flat plate having a "C"-shaped end cross section that is open toward the upper side, and the above-mentioned left inclined drainage section supports the horizontal drainage rail located on the left side by having a structure in which the horizontal drainage rail located on the left side is mounted on the "C"-shaped end cross section of the above-mentioned left inclined drainage section, and the "C"-shaped end cross section of the above-mentioned left inclined drainage section can receive rainwater flowing down along the outer surface of the horizontal drainage rail located on the left side to induce a downward flow of rainwater.

[0016] Each of the above inclined drainage rails may further include a right inclined drainage section formed in the shape of a wing plate protruding to the right from the right side of the central inclined drainage section, which supports the horizontal drainage rail located on the right among two horizontal drainage rails adjacent to each other in the left-right direction among the plurality of horizontal drainage rails, and at the same time receives rainwater descending along the outer surface of the horizontal drainage rail located on the right to induce a downward flow of rainwater.

[0017] The above-mentioned right-sloping drainage section is formed in the shape of a flat plate having a "C"-shaped end cross section that is open to the upper side, and the right-sloping drainage section supports the horizontal drainage rail located on the right side by a structure in which the horizontal drainage rail located on the right side is mounted on the "C"-shaped end cross section of the right-sloping drainage section, and the "C"-shaped end cross section of the right-sloping drainage section can receive rainwater flowing down along the outer surface of the horizontal drainage rail located on the right side to induce a downward flow of rainwater.

[0018] Each of the above horizontal drainage rails is formed in a cross-sectional shape of "[" and includes a main horizontal drainage section that receives rainwater leaking through the left-right boundary between the plurality of solar panels, and the rainwater received in the main horizontal drainage section can flow into two inclined drainage rails positioned on the lower side of both ends of the main horizontal drainage section among the plurality of inclined drainage rails through drainage holes formed at each end of the bottom plate of the main horizontal drainage section.

[0019] Each of the above horizontal drainage rails may further include a central horizontal drainage section formed as a partition protruding from the longitudinal center of the upper surface of the bottom plate of the main horizontal drainage section so that the interior of the main horizontal drainage section is divided into two separate spaces, thereby supporting two solar panels adjacent to each other in the front-rear direction among the plurality of solar panels, and accommodating rainwater leaking through the left-right boundary between the two solar panels adjacent to each other in the front-rear direction.

[0020] The central horizontal drainage section is formed in the form of a partition having an upper section with a "C" shape cross section open at the top and flat protruding plates on both the left and right sides, and is structured such that two solar panels adjacent to each other in the front-rear direction are mounted on the protruding plates on both sides of the central horizontal drainage section to support the two solar panels adjacent to each other in the front-rear direction, and the upper section of the "C" shape cross section of the central horizontal drainage section can receive rainwater leaking through the left-right boundary between the two solar panels adjacent to each other in the front-rear direction. Effects of the invention

[0021] Multiple horizontal drainage rails are horizontally positioned below the left-right boundary between multiple solar panels to accommodate rainwater leaking through the left-right boundary between multiple solar panels, and multiple inclined drainage rails are inclinedly positioned below the front-back boundary between multiple solar panels to accommodate rainwater leaking through the front-back boundary between multiple solar panels and rainwater flowing in from the multiple horizontal drainage rails, thereby inducing a downward flow of rainwater. This allows not only rainwater leaking through the front-back boundary between multiple solar panels but also rainwater leaking through the left-right boundary between multiple solar panels to flow downward along the inclined drainage rails, ensuring that rainwater leaking through all boundaries between multiple solar panels can be smoothly drained.

[0022] Each drainage rail coupler is positioned between two adjacent inclined drainage rails in the front-rear direction, with one side connected to the inner side of the lower inclined drainage rail among the two adjacent inclined drainage rails and the other side connected to the outer side of the upper inclined drainage rail, thereby connecting the two adjacent inclined drainage rails and ensuring smooth drainage without leakage at the joint between the two adjacent inclined drainage rails. As a result, even when multiple inclined drainage rails are arranged in a row, smooth drainage can be maintained without leakage.

[0023] In this way, since rainwater leaking through all boundaries between multiple solar panels can be effectively collected and smoothly drained, even if the amount of leakage flowing down through the gaps in the joints between the panels increases due to heavy rain, overflow from the horizontal drainage rails and inclined drainage rails does not occur. In particular, rainwater leaking through the left-right boundaries between multiple solar panels is highly likely to overflow because the flow of rainwater in the left-right direction is not smooth. Rainwater leaking through the left-right boundaries between multiple solar panels flows into the horizontal drainage rail, and then flows into the inclined drainage rail due to the stacked structure of the horizontal and inclined drainage rails, allowing for smooth drainage; consequently, leakage to the underside of the roof-integrated photovoltaic power generation system can be completely prevented.

[0024] The effects are not limited to those described above, and other effects may be derived from the following description. Brief explanation of the drawing

[0025] FIG. 1 is a perspective view of a roof-integrated photovoltaic power generation device according to one embodiment of the present invention. Figures 2 and 3 are exploded views of the roof-integrated photovoltaic power generation device shown in Figure 1. Figure 4 is a partial enlarged view of the roof-integrated photovoltaic power generation device shown in Figure 1. FIG. 5 is a cross-sectional view of the horizontal drainage rail (21) shown in FIG. 1. FIG. 6 is an enlarged view of the combined drainage rail coupler (23) shown in FIG. 1 to 4. FIG. 7 is an exploded view of the drainage rail coupler (23) shown in FIG. 5. FIG. 8 is a diagram showing the process of connecting one side of the drainage rail coupler (23) shown in FIG. 6. FIG. 9 is a diagram of the other side connection process of the drainage rail coupler (23) shown in FIG. 6. FIG. 10 is a cross-sectional view of one side of the inclined drainage rail (22) shown in FIG. 5. FIG. 11 is a cross-sectional view of the other side of the inclined drainage rail (22) shown in FIG. 5. FIG. 12 is a cross-sectional view of the installation portion of the vibration absorbing member (52) shown in FIG. 1. FIG. 13 is a front perspective view of the vibration absorbing member (52) shown in FIG. 12. FIG. 14 is a rear perspective view of the vibration absorbing member (52) shown in FIG. 12. FIG. 15 is an exploded view of the vibration absorbing member (52) shown in FIG. 12. Specific details for implementing the invention

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments of the present invention described below relate to a roof-integrated photovoltaic power generation device that allows for the smooth drainage of rainwater leaking through the front-to-rear boundary between multiple photovoltaic panels as well as rainwater leaking through the left-to-right boundary between multiple photovoltaic panels, and ensures that smooth drainage is maintained without leakage even when multiple inclined drainage rails are arranged in a row. Hereinafter, such a device will be briefly referred to as a "roof-integrated photovoltaic power generation device."

[0027] FIG. 1 is a perspective view of a roof-integrated photovoltaic power generation device according to one embodiment of the present invention, FIG. 2 and 3 are exploded views of the roof-integrated photovoltaic power generation device shown in FIG. 1, and FIG. 4 is a partial enlarged view of the roof-integrated photovoltaic power generation device shown in FIG. 1. Referring to FIG. 1 to 4, the roof-integrated photovoltaic power generation device according to the present embodiment is composed of a plurality of photovoltaic panels (11), a plurality of finishing covers (12), a plurality of boundary covers (13), a plurality of horizontal drainage rails (21), a plurality of inclined drainage rails (22), a plurality of drainage rail couplers (23), a plurality of coupling clips (24), a waterproof sheet (30), an insulation panel (40), a plurality of intermediate horizontal supports (51), a plurality of vibration absorbing members (52), a roof foundation panel (60), a plurality of lower horizontal supports (71), and a plurality of inclined supports (72).

[0028] FIG. 1 illustrates a roof-integrated photovoltaic power generation device with some of the multiple solar panels (11) removed to aid in understanding the arrangement structure between multiple horizontal drainage rails (21) and multiple inclined drainage rails (22). FIG. 2 illustrates an exploded view from the top, and FIG. 3 illustrates an exploded view from the bottom. FIG. 4 illustrates an enlarged view of the roof-integrated photovoltaic power generation device with some of the multiple solar panels (11) removed.

[0029] Multiple solar panels (11) are each formed in the shape of a square panel and arranged in a matrix structure so as to be adjacent to each other. According to the example illustrated in FIG. 1, nine solar panels (11) are arranged in a matrix structure of three rows and three columns. As such, as the multiple solar panels (11) are arranged in a matrix structure, the boundaries between the multiple solar panels (11) take the shape of a grid pattern. The grid pattern boundaries between the multiple solar panels (11) are classified into left-rear boundary and front-back boundary between the multiple solar panels (11). Each solar panel (11) consists of a set of multiple solar cells electrically connected in series, parallel, or series-parallel, and a housing surrounding the set of multiple solar cells, and produces electrical energy from sunlight.

[0030] Each of the multiple end covers (12) is formed in the shape of a folded plate with a cross-section of "L", some of which are placed on the upper side of the multiple solar panels (11), and some of which are placed on the lower side of the multiple solar panels (11). Although omitted in FIG. 1, the multiple end covers (12) may be placed on the left and right sides of the multiple solar panels (11). In this way, the multiple end covers (12) are placed around the perimeter of the multiple solar panels (11) and serve to protect the multiple solar panels (11) from external impacts or wind loads.

[0031] A plurality of boundary covers (13) are each formed in the shape of a rail with a cross-section "U" shape, having two wings protruding from the upper sides, and are inserted into the grid pattern boundary between a plurality of solar panels (11). Each boundary cover (13) is inserted into a gap corresponding to the boundary between two adjacent solar panels so that its two wings are seated around the boundary between two solar panels that are adjacent to each other in the front-rear or left-right direction among the plurality of solar panels (11). Some of the plurality of boundary covers (13) are each manufactured with a length corresponding to the total length of the plurality of solar panels (11) and are inserted into the front-rear boundary between the plurality of solar panels (11), and some of the plurality of boundary covers (13) are each manufactured with a length corresponding to the width of each solar panel (11) and are inserted into the left-right boundary between the plurality of solar panels (11).

[0032] In this way, multiple boundary covers (13) are inserted into the boundary between multiple solar panels (11) to prevent rainwater from penetrating the boundary between multiple solar panels (11) and falling downward. The multiple boundary covers (13) serve a primary role in preventing rainwater falling on the multiple solar panels (11) from entering the building by allowing it to flow down along the boundary between the multiple solar panels (11). However, the multiple solar panels (11) are continuously shaken by wind, etc., and a gap may occur between the multiple solar panels (11) and the multiple boundary covers (13), or the size of the gap may increase, so the multiple boundary covers (13) alone cannot prevent rainwater from penetrating the boundary between the multiple solar panels (11) and falling downward.

[0033] Multiple horizontal drainage rails (21) are formed in the shape of downwardly recessed rails to accommodate rainwater that has penetrated the left-right boundary between multiple solar panels (11), and are horizontally positioned on the lower side of the left-right boundary between multiple solar panels (11). In this way, multiple horizontal drainage rails (21) are horizontally positioned on the lower side of the left-right boundary between multiple solar panels (11) to accommodate rainwater leaking through the left-right boundary between multiple solar panels (11). Each horizontal drainage rail (21) is manufactured with a length corresponding to the width of each solar panel (11), and one end thereof is mounted on one of two inclined drainage rails (22) adjacent to each other in the left-right direction, and the other end thereof is mounted on the other inclined drainage rail (22).

[0034] FIG. 5 is a cross-sectional view of the horizontal drainage rail (21) illustrated in FIG. 1. FIG. 5 (a) shows a single cross-sectional view of the horizontal drainage rail (21) cut at an intermediate position, and FIG. 5 (b) shows a cross-sectional view of the horizontal drainage rail (21) with the horizontal drainage rail (21) installed. FIG. 5 (b) shows a cross-sectional view with the addition of a solar panel (11) and an inclined drainage rail (22). In FIG. 5, the cross-sectional view of the horizontal drainage rail (21) is indicated by hatching. Referring to FIG. 5, each horizontal drainage rail (21) consists of a main horizontal drainage section (211) and a central horizontal drainage section (212). The main horizontal drainage section (211) is formed in the shape of a cross-section "[" consisting of a bottom plate, a left plate, and a right plate, and receives rainwater leaking through the left-right boundary between a plurality of solar panels (11). The left and right plates of the main horizontal drainage section (211) may be referred to as the side plates of the main horizontal drainage section (211). A circular drainage hole (210) is formed at each end of the bottom plate of the main horizontal drainage section (211).

[0035] As described above, one end of each horizontal drainage rail (21) is mounted on one of two inclined drainage rails (22) adjacent to each other in the left-right direction, and the other end is mounted on the other inclined drainage rail (22). Thus, two inclined drainage rails (22) are arranged so as to intersect with both ends of the bottom plate of the main horizontal drainage section (211). As shown in FIG. 4, rainwater contained in the main horizontal drainage section (211) flows into two inclined drainage rails (22) among the plurality of inclined drainage rails (22) located on both ends of the bottom plate of the main horizontal drainage section (211) through drainage holes (210) formed at each end of the bottom plate of the main horizontal drainage section (211). The lower circumference of the drainage hole (210) is protruded in a ring shape so that rainwater contained in the main horizontal drainage section (211) can flow into the inclined drainage rail (22) without spreading out from the lower side of the drainage hole (210) formed at each end of the bottom plate of the main horizontal drainage section (211).

[0036] A square hole is formed at each end of the bottom plate of the main horizontal drainage section (211), along with a circular drainage hole (210). The square holes formed at each end of the bottom plate of the main horizontal drainage section (211) are used to secure each horizontal drainage rail (21) to an inclined drainage rail (22) positioned below each horizontal drainage rail (21). A tapping screw passes through the square holes formed at each end of the bottom plate of the main horizontal drainage section (211) and is fastened to the upper end of the central inclined drainage section (222) of the inclined drainage rail (22), thereby securing each horizontal drainage rail (21) to the inclined drainage rail (22) positioned below each horizontal drainage rail (21).

[0037] The central horizontal drain (212) is formed in the form of a partition protruding from the longitudinal center of the upper surface of the bottom plate of the main horizontal drain (211) so that the interior of the main horizontal drain (211) is divided into two separate spaces, and supports two solar panels (11) that are adjacent to each other in the front-rear direction among a plurality of solar panels (11), and at the same time receives rainwater leaking through the left-right boundary between two solar panels (11) that are adjacent to each other in the front-rear direction. As shown in FIG. 5, the central horizontal drain (212) is formed in the form of a partition having an upper section "C" shape with an open upper side and two protruding plates that protrude in a flat shape to the left and right sides from the lower side of the upper section "C" shape.

[0038] The central horizontal drain (212) is formed in the form of a partition having an upper section of the cross-section "C" shape with an open upper side and two protruding plates protruding in a flat shape to the left and right sides from the lower side of the upper section of the cross-section "C" shape, and supports two solar panels (11) adjacent to each other in the front-rear direction by mounting them on the two protruding plates of the central horizontal drain (212), and the upper section of the cross-section "C" shape of the central horizontal drain (212) receives rainwater leaking through the left-right boundary between the two solar panels (11) adjacent to each other in the front-rear direction.

[0039] In this way, since two solar panels (11) adjacent to each other in the front-rear direction are mounted on the protruding plates on both sides of the central horizontal drainage section (212), the upper end of the cross-section "C" shape of the central horizontal drainage section (212) is positioned in the gap of the left-right boundary between the two solar panels (11) adjacent to each other in the front-rear direction. Accordingly, rainwater leaking through the left-right boundary between the two solar panels (11) adjacent to each other in the front-rear direction is received and collected at the upper end of the cross-section "C" shape of the central horizontal drainage section (212). As the flow of rainwater in the inclined direction is smooth, but the flow of rainwater in the left-right direction is not smooth, most of the rainwater received at the upper end of the cross-section "C" shape of the central horizontal drainage section (212) overflows during rainfall.

[0040] Rainwater overflowing from the top of the cross-section "C" of the central horizontal drainage section (212) flows down along the uppermost surface of the roof-integrated photovoltaic power generation device, that is, the surface of multiple photovoltaic panels (11), and falls to the outside of the building. Some of the rainwater contained in the top of the cross-section "C" of the central horizontal drainage section (212) falls from both ends of the central horizontal drainage section (212) and flows into two inclined drainage rails (22) located below both ends of the central horizontal drainage section (212). The rainwater flowing into the inclined drainage rails (22) flows down along each inclined drainage rail (22) and falls to the outside of the building. Due to the shape and arrangement structure of the central horizontal drainage section (212), most of the rainwater leaking through the left-right boundary between the multiple solar panels (11) during rainfall overflows and falls to the outside of the building along the surface of the multiple solar panels (11), thereby significantly reducing the amount of rainwater flowing into the inclined drainage rail (22).

[0041] FIG. 6 is an enlarged view of the connection of the drainage rail coupler (23) shown in FIG. 1 to 4, FIG. 7 is an exploded view of the drainage rail coupler (23) shown in FIG. 5, FIG. 8 is a diagram of the connection process of one side of the drainage rail coupler (23) shown in FIG. 6, and FIG. 9 is a diagram of the connection process of the other side of the drainage rail coupler (23) shown in FIG. 6. FIG. 10 is a cross-sectional view of one side of the inclined drainage rail (22) shown in FIG. 5, and FIG. 11 is a cross-sectional view of the other side of the inclined drainage rail (22) shown in FIG. 5. FIG. 10 shows a cross-sectional view of one side of the inclined drainage rail (22) at the cutting line AA' shown in FIG. 6, and FIG. 11 shows a cross-sectional view of the other side of the inclined drainage rail (22) at the cutting line BB' shown in FIG. 6. In FIGS. 10 and 11, (a) shows a cross-section of a drainage rail coupler (23) alone, (b) shows a cross-section of the drainage rail coupler (23) coupled to an inclined drainage rail (22), and (c) shows a cross-section with a solar panel (11) and a horizontal drainage rail (21) added. In FIGS. 10 and 11, the cross-section of the drainage rail coupler (23) is shown in gray, and the cross-section of the inclined drainage rail (22) is shown with diagonal lines.

[0042] Multiple inclined drainage rails (22) are formed in the shape of downwardly recessed rails to accommodate rainwater that has penetrated into the front-rear boundary between multiple solar panels (11), and are positioned at an angle parallel to the slope of the multiple solar panels (11) on the lower side of the front-rear boundary between multiple solar panels (11). In this way, the multiple inclined drainage rails (22) are positioned at an angle on the lower side of the front-rear boundary between multiple solar panels (11) to accommodate rainwater leaking through the front-rear boundary between multiple solar panels (11) and rainwater flowing in from multiple horizontal drainage rails (21), thereby inducing a downward flow of rainwater.

[0043] As described above, two inclined drainage rails (22) are arranged at the lower ends of the floor plate of the main horizontal drainage section (211) of each horizontal drainage rail (21) so as to intersect with the lower ends of the floor plate of the main horizontal drainage section (211). In this way, each inclined drainage rail (22) is arranged at the lower ends of the floor plate of the main horizontal drainage section (211) of each horizontal drainage rail (21) to receive rainwater flowing in through the drainage holes (210) formed at each end of the floor plate of the main horizontal drainage section (211) and rainwater falling from the lower ends of the central horizontal drainage section (212). The rainwater flowing into each inclined drainage rail (22) flows down along each inclined drainage rail (22) and falls to the outside of the building.

[0044] In this embodiment, among the plurality of inclined drainage rails (22), two inclined drainage rails (22) adjacent to each other in the front-rear direction refer to two inclined drainage rails (22) arranged in a line in the front-rear direction, and among the plurality of inclined drainage rails (22), two inclined drainage rails (22) adjacent to each other in the left-right direction refer to two inclined drainage rails (22) arranged parallel to each other, spaced apart by the width of each solar panel (11) in the left-right direction. As shown in FIG. 1, two inclined drainage rails (22) arranged in a line in the front-rear direction are arranged in the longitudinal direction of nine solar panels (11) arranged in a matrix structure of three rows and three columns, and these two inclined drainage rails (22) arranged in a line in the front-rear direction are arranged repeatedly in four columns, spaced apart by the width of each solar panel (11) in the transverse direction, that is, the left-right direction, of the nine solar panels (11).

[0045] Referring to FIGS. 10 and 11, each inclined drainage rail (22) is composed of a main inclined drainage section (221), a central inclined drainage section (222), a left inclined drainage section (223), and a right inclined drainage section (224). The main inclined drainage section (221) is formed in a cross-sectional shape [] made of a bottom plate, a left plate, and a right plate, and receives rainwater leaking through the front-rear boundary between multiple solar panels (11) and rainwater flowing in from multiple horizontal drainage rails (21) to induce a downward flow of rainwater. The left plate and the right plate of the main inclined drainage section (221) may be referred to as the side plates of the main inclined drainage section (221). As shown in FIGS. 10 and 11, the upper part of the side plates of the main inclined drainage section (221) is formed in an "I" shape with a cross-sectional shape that is symmetrical to each other, such that the outer surfaces of both sides and the inner surfaces of both sides are recessed.

[0046] The central inclined drain (222) is formed in the form of a partition protruding from the longitudinal center of the upper surface of the bottom plate of the main inclined drain (221) so that the interior of the main inclined drain (221) is divided into two separate spaces, and supports two solar panels (11) that are adjacent to each other in the left-right direction among a plurality of solar panels (11), and at the same time receives rainwater leaking through the front-rear boundary between the two solar panels (11) that are adjacent to each other in the left-right direction, thereby inducing a downward flow of rainwater. As shown in FIGS. 10 and 11, the central inclined drain (222) is formed in the form of a partition having an upper section "C" shape with an open upper side and two protruding plates that protrude in a flat shape to the left and right sides from the lower side of the upper section "C" shape.

[0047] The central inclined drainage section (222) is formed in the form of a partition having an upper section of the cross-section "C" shape with an open upper side and two protruding plates protruding in a flat shape to the left and right sides from the lower side of the upper section of the cross-section "C" shape, and supports two solar panels (11) adjacent to each other in the left and right directions by mounting them on the two protruding plates of the central inclined drainage section (222), and the upper section of the cross-section "C" shape of the central inclined drainage section (222) receives rainwater leaking through the front-rear boundary between the two solar panels (11) adjacent to each other in the left and right directions and induces a downward flow of rainwater.

[0048] In this way, since two solar panels (11) adjacent to each other in the left-right direction are mounted on the protrusions on both sides of the central inclined drainage section (222), the upper end of the cross-section "C" shape of the central inclined drainage section (222) is positioned in the gap of the front-rear boundary between the two solar panels (11) adjacent to each other in the left-right direction. Accordingly, rainwater leaking through the front-rear boundary between the two solar panels (11) adjacent to each other in the left-right direction is received and collected at the upper end of the cross-section "C" shape of the central inclined drainage section (222). Since the inclined drainage rail (22) is positioned at an angle that allows rainwater to flow down, for example, about 5 degrees, rainwater received at the upper end of the cross-section "C" shape of the central inclined drainage section (222) during normal rainfall flows down within the upper end of the cross-section "C" shape and falls to the outside of the building.

[0049] During heavy rain, rainwater contained at the top of the cross-section "C" of the central inclined drain (222) can overflow. The rainwater overflowing from the top of the cross-section "C" of the central inclined drain (222) flows down along the uppermost surface of the roof-integrated photovoltaic power generation device, that is, the surface of multiple solar panels (11), and falls to the outside of the building. Due to the shape and arrangement structure of the central horizontal drain (212), most of the rainwater leaking through the front-rear boundary between multiple solar panels (11) during heavy rain overflows and falls to the outside of the building along the surface of multiple solar panels (11), thereby significantly reducing the amount of rainwater flowing into the main inclined drain (221). As a result, even during heavy rain, drainage through the main inclined drain (221) can be carried out smoothly without overflow.

[0050] The left inclined drain section (223) is formed in the shape of a wing plate protruding to the left from the left side of the central inclined drain section (222), and supports the horizontal drain rail (21) located on the left among two horizontal drain rails (21) adjacent to each other in the left-right direction among a plurality of horizontal drain rails (21), and at the same time receives rainwater flowing down along the outer surface of the horizontal drain rail (21) located on the left to induce a downward flow of rainwater. As shown in FIGS. 10 and 11, the left inclined drain section (223) is formed in the shape of a flat plate having a cross-section "C" shape end that is open to the upper side.

[0051] The left inclined drainage section (223) is structured such that the horizontal drainage rail (21) located on the left among two horizontal drainage rails (21) adjacent to each other in the left and right directions is mounted at the end of the cross-section "C" of the left inclined drainage section (223), thereby supporting the horizontal drainage rail (21) located on the left. The end of the cross-section "C" of the left inclined drainage section (223) receives rainwater flowing down along the outer surface of the horizontal drainage rail (21) located on the left and induces a downward flow of rainwater. Most of the rainwater flowing into the horizontal drainage rail (21) is discharged through the drainage holes (210) formed at each end of the bottom plate of the main horizontal drainage section (211), but some of it may flow down along the end surfaces of the bottom plate of the main horizontal drainage section (211) corresponding to the outer surface of the horizontal drainage rail (21). Rainwater flowing down along the outer surface of the horizontal drainage rail (21) located on the left side among the two horizontal drainage rails (21) adjacent to each other in the left and right directions is received in the left inclined drainage section (223) and flows downward and falls on the outside of the building, thereby reducing the amount of rainwater flowing into the main inclined drainage section (221).

[0052] The right inclined drain section (224) is formed in the shape of a wing plate protruding to the right from the right side of the central inclined drain section (222), and supports the horizontal drain rail (21) located on the right among two horizontal drain rails (21) adjacent to each other in the left-right direction among a plurality of horizontal drain rails (21), and at the same time receives rainwater flowing down along the outer surface of the horizontal drain rail (21) located on the right to induce a downward flow of rainwater. As shown in FIGS. 10 and 11, the right inclined drain section (224) is formed in the shape of a flat plate having a cross-sectional "C" shape end that is open to the upper side.

[0053] The right slope drain section (224) supports the horizontal drain rail (21) located on the right side by having the horizontal drain rail (21) located on the right side mounted at the end of the cross-section "C" shape of the right slope drain section (224), and the end of the cross-section "C" shape of the right slope drain section (224) receives rainwater flowing down along the outer surface of the horizontal drain rail (21) located on the right side to induce a downward flow of rainwater. Rainwater flowing down along the outer surface of the horizontal drain rail (21) located on the right side among the two horizontal drain rails (21) adjacent to each other in the left and right directions is received by the right slope drain section (224) and flows down to fall on the outside of the building, thereby reducing the amount of rainwater flowing into the main slope drain section (221).

[0054] As described above, the amount of rainwater flowing into the main inclined drainage section (221) of the inclined drainage rail (22) can be reduced by the upper end of the cross-section "C" of the central horizontal drainage section (212) of the horizontal drainage rail (21), the upper end of the cross-section "C" of the central inclined drainage section (222) of the inclined drainage rail (22), the end of the cross-section "C" of the left inclined drainage section (223), and the end of the cross-section "C" of the right inclined drainage section (224). If the amount of rainwater flowing into the main inclined drainage section (221) increases during heavy rain, rainwater may overflow from the main inclined drainage section (221). According to the present embodiment, due to the shape and arrangement structure of the horizontal drainage rail (21) and the inclined drainage rail (22) as described above, drainage through the main inclined drainage section (221) can be carried out smoothly without overflow even during heavy rain. If rainwater overflows from the main inclined drainage section (221), rainwater falling downward toward the waterproof sheet (30), i.e., leakage, may occur.

[0055] In this way, since rainwater leaking through all boundaries between multiple solar panels (11) can be effectively collected and drained smoothly, even if the amount of leakage flowing down through the gaps in the joints between multiple solar panels increases due to heavy rain, the phenomenon of rainwater overflowing from the horizontal drainage rail (21) and the inclined drainage rail (22) does not occur. In particular, rainwater leaking through the left-right boundary between multiple solar panels (11) is highly likely to overflow as the flow of rainwater in the left-right direction is not smooth. Rainwater leaking through the left-right boundary between multiple solar panels (11) flows into the horizontal drainage rail, and then flows into the inclined drainage rail (22) through the stacked structure of the horizontal drainage rail (21) and the inclined drainage rail (22) to be drained smoothly, thereby completely blocking the occurrence of leakage to the lower side of the roof-integrated solar power generation device.

[0056] A plurality of drainage rail couplers (23) are each positioned between two adjacent inclined drainage rails (22) in the front-rear direction among the plurality of inclined drainage rails (22), with one side coupled to the inner side of the inclined drainage rail (22) located on the lower side among the two adjacent inclined drainage rails (22) in the front-rear direction, and the other side coupled to the outer side of the inclined drainage rail (22) located on the upper side among the two adjacent inclined drainage rails (22) in the front-rear direction, thereby connecting two adjacent inclined drainage rails (22) in the front-rear direction. As shown in FIGS. 6 to 9, one side of each drainage rail coupler (23) is connected to the inside of the main inclined drainage section (221) of the inclined drainage rail (22) located on the lower side, and the other side of each drainage rail coupler (23) is connected to the outside of the main inclined drainage section (221) of the inclined drainage rail (22) located on the upper side.

[0057] Each drainage rail coupler (23) is positioned between two adjacent inclined drainage rails (22) in the front-rear direction, with one side connected to the inner side of the inclined drainage rail (22) located on the lower side among the two adjacent inclined drainage rails (22), and the other side connected to the outer side of the inclined drainage rail (22) located on the upper side, thereby connecting the two adjacent inclined drainage rails (22) so that smooth drainage can be maintained without leakage occurring at the joint of the two adjacent inclined drainage rails (22). As a result, even when multiple inclined drainage rails (22) are arranged in a row, smooth drainage can be maintained without leakage. Each drainage rail coupler (23) can be watertightly connected to the inner side of the inclined drainage rail located on the lower side using silicone adhesive, and the other side can be watertightly connected to the outer side of the inclined drainage rail (22) located on the upper side.

[0058] A plurality of drainage rail couplers (23) are composed of an inner coupling part (231), an outer coupling part (232), and an intermediate buffer part (233). Most of the parts of this embodiment, such as each horizontal drainage rail (21) and each inclined drainage rail (22), can be made of a lightweight metal material such as aluminum, and each drainage rail coupler (23) can be made of an engineering plastic material of the PA6 (Polyamide 6) series. If both the drainage rail coupler (23) and the inclined drainage rail (22) are made of a metal material, there is a very high possibility that a gap will occur in the joint part between the drainage rail coupler (23) and the inclined drainage rail (22). If each drainage rail coupler (23) is made of an engineering plastic material that is more elastically deformable than a metal material, it can be joined to each inclined drainage rail (22) without a gap.

[0059] FIG. 10 illustrates a cross-section in which the inner coupling portion (231) of each drainage rail coupler (23) is coupled to the inner side of the inclined drainage rail (22). Referring to FIG. 10, the inner coupling portion (231) is coupled to the inner side of the inclined drainage rail (22) located on the lower side among two inclined drainage rails (22) that are adjacent to each other in the front-rear direction, in a structure that is in close contact with the upper surface of the bottom plate and the inner surface of the side plates of the main inclined drainage portion (221) of the inclined drainage rail (22) located on the lower side. The upper part of the side plates of the inner coupling portion (231) is formed in an "L" shape such that the outer surfaces on both sides protrude and the inner surfaces on both sides expand, and the cross-sections are symmetrical to each other.

[0060] As described above, the upper portions of the side plates of the main inclined drainage section (221) are formed in an "I" shape with cross-sections that are symmetrical to each other, such that the outer surfaces of both sides and the inner surfaces of both sides are recessed. As shown in FIG. 10, the inner coupling part (231) is connected to the inner side of the inclined drainage rail (22) located on the lower side, which is adjacent to the main inclined drainage section (22) located on the lower side, in a structure in which the protruding portions of the outer surfaces of the upper portions of the side plates of the inner coupling part (231) are fitted into the recessed portions of the inner surfaces of the upper portions of the side plates of the main inclined drainage section (221) of the main inclined drainage rail (22) located on the lower side, while the inner surface of the bottom plate of the main inclined drainage section (221) of the inclined drainage rail (22) located on the lower side is in close contact with the inner surface of the side plates.

[0061] The outer connecting part (232) is structured to be in close contact with the lower surface of the bottom plate and the outer surface of the side plates of the main inclined drainage part (221) of the inclined drainage rail (22) located on the upper side, and is connected to the outer side of the inclined drainage rail (22) located on the upper side among two inclined drainage rails (22) adjacent to each other in the front-rear direction. The upper part of the side plates of the outer connecting part (232) is formed in an "L" shape with a cross section that is symmetrical to each other, so that the outer surfaces on both sides protrude and the inner surfaces on both sides expand. Both the upper part of the side plates of the inner connecting part (231) and the upper part of the side plates of the outer connecting part (232) are formed in an "L" shape with a cross section that is symmetrical to each other, but the width of the inner surfaces on both sides of the upper part of the side plates of the outer connecting part (232) is formed wider than the width of the inner surfaces on both sides of the upper part of the side plates of the inner connecting part (231).

[0062] As described above, the upper portions of the side plates of the main inclined drainage section (221) are formed in an "I" shape with cross-sections that are symmetrical to each other, such that the outer surfaces of both sides and the inner surfaces of both sides are recessed. As shown in FIG. 11, the outer coupling portion (232) is connected to the outer side of the inclined drainage rail (22) located on the upper side, which is adjacent to the other two inclined drainage rails (22) in the front-rear direction, in a structure in which the recessed portions of the outer surfaces of the upper portions of the side plates of the main inclined drainage section (221) of the inclined drainage rail (22) located on the upper side are covered by the expanded portions of the inner surfaces of both sides of the upper portions of the side plates of the outer coupling portion (232), while the two inclined drainage rails (22) located on the upper side are in close contact with the lower surface of the bottom plate of the main inclined drainage section (221) of the inclined drainage rail (22) located on the upper side.

[0063] The intermediate buffer section (233) is formed in a "[" shape with cross-sections symmetrical to each other so that the inner surfaces on both sides are sunken, and is integrally connected between the inner coupling section (231) and the outer coupling section (232). As such, the intermediate buffer section (233) is formed in a "[" shape with cross-sections symmetrical to each other and is integrally connected between the inner coupling section (231) and the outer coupling section (232), so that the upper end is connected to the outer coupling section (232) so that protrusions are formed protruding from the inner surfaces on both sides, and the lower end is connected to the inner coupling section (231) in an "L" shape with longitudinal cross-sections symmetrical to each other so that the inner surfaces on both sides are reduced. The inclined drainage rail (22) located on the upper side is fixed by being caught on the upper side protrusion of the intermediate buffer section (233), and the inclined drainage rail (22) located on the lower side is fixed by being caught on the lower side protruding surface of the intermediate buffer section (233). The recessed spaces on both inner sides of the intermediate buffer section (233) serve to temporarily buffer rainwater when the amount of rainwater flowing down along the main inclined drainage section (221) of the inclined drainage rail (22) increases, thereby preventing rainwater from overflowing from the main inclined drainage section (221).

[0064] Multiple connecting clips (24) are formed in an "L" shape in cross-section, with one side connected to multiple inclined drainage rails (22) and the other side connected to multiple intermediate horizontal supports (51), serving to fix the multiple inclined drainage rails (22) to the multiple intermediate horizontal supports (51). One side of each connecting clip (24) is formed in a "T" shape in cross-section and is fitted into the recessed outer surface portions on both sides of the upper side plates of the main inclined drainage section (221) of each inclined drainage rail (22). The other side of each connecting clip (24) is screw-connected to each intermediate horizontal support (51) using a tapping screw that penetrates it and is fastened to the multiple intermediate horizontal supports (51). The tapping screw penetrating the other side of each connecting clip (24) penetrates the waterproof sheet (30) and the insulation panel (40) and is screw-connected to each intermediate horizontal support (51).

[0065] The waterproof sheet (30) is formed in the form of a thin sheet with an area larger than the total area of ​​the plurality of solar panels (11) arranged in a matrix structure and is placed below the plurality of inclined drainage rails (22). For the waterproof sheet (30), TPO (Thermoplastic Polyolefin) sheet, EPDM (Ethylene Propylene Diene Monomer) sheet, PVC (Polyvinyl Chloride) sheet, etc., may be used. The insulation panel (40) is formed in the form of a rectangular flat plate with an area equal to the area of ​​the waterproof sheet (30) and is placed below the waterproof sheet (30). For the material of the insulation panel (40), PIR (Polyisocyanurate) insulation, EPS (Expanded Polystyrene) foam, ceramic wool insulation, glass wool insulation, etc., may be used. When rainwater falls on the upper surface of the waterproof sheet (30), the waterproof sheet (30) and the insulation panel (40) become wet, and since the rainwater may fall downward, a drainage structure such as the inclined drainage rail (22) described above is required.

[0066] FIG. 12 is a cutaway view of the installation portion of the vibration absorbing member (52) shown in FIG. 1, FIG. 13 is a front perspective view of the vibration absorbing member (52) shown in FIG. 12, FIG. 14 is a rear perspective view of the vibration absorbing member (52) shown in FIG. 12, and FIG. 15 is an exploded view of the vibration absorbing member (52) shown in FIG. 12. In FIG. 12, the roof foundation panel (60) is omitted so that the installation appearance of the vibration absorbing member (52) can be exposed, and the waterproof sheet (30) and the insulation panel (40) are shown in a cutaway state. Referring to FIG. 12, a plurality of intermediate horizontal supports (51) are each formed in the shape of an L-shaped steel and are arranged horizontally on the lower side of a plurality of inclined drainage rails (22) to intersect with the plurality of inclined drainage rails (22), thereby serving to support the plurality of inclined drainage rails (22).

[0067] A plurality of vibration absorbing members (52) absorb vibrations generated in at least one of a plurality of inclined drainage rails (22) and roof foundation panels (60) by varying the length of the direction in which they are inserted between the plurality of inclined drainage rails (22) and roof foundation panels (60) according to the change in the gap between the plurality of inclined drainage rails (22) and roof foundation panels (60). In this way, by absorbing vibrations generated in at least one of the inclined drainage rails (22) and roof foundation panels (60) through a structure in which the length of the direction in which each vibration absorbing member (52) is inserted between each inclined drainage rail (22) and roof foundation panel (60) varies according to the change in the gap between each inclined drainage rail (22) and roof foundation panel (60), vibration transmission between each inclined drainage rail (22) and roof foundation panel (60) can be blocked.

[0068] The roof-integrated photovoltaic power generation device according to the present embodiment is installed in an environment where vibrations occur due to external forces applied from above, such as wind, and external forces applied from below, such as earthquakes. According to the present embodiment, even when vibrations occur in the roof foundation panel (60) due to earthquakes, etc., the transmission of vibrations to each inclined drainage rail (22) is blocked, thereby minimizing shaking of each inclined drainage rail (22) and surrounding parts, so that drainage performance can be maintained stably. Even when vibrations occur in each inclined drainage rail (22) due to vibrations in the photovoltaic panel caused by wind, etc., the transmission of vibrations to the roof foundation panel (60) is blocked, so the possibility of structural damage, such as loosening of parts connections and increased metal fatigue due to the accumulation of repetitive vibrations, can be minimized.

[0069] The roof foundation panel (60) is formed in the shape of a plate and is positioned at an angle parallel to the slope of the plurality of inclined drainage rails (22) on the lower side of the plurality of inclined drainage rails (22). As shown in FIGS. 1 to 3, the roof foundation panel (60) may be formed in the shape of a corrugated plate or in the shape of a flat plate. Each of the plurality of lower horizontal supports (71) is formed in the shape of a C-shape and is positioned horizontally on the lower side of the roof foundation panel (60) to support the roof foundation panel (60). Each of the plurality of inclined supports (72) is formed in the shape of an H-shape and is positioned at an angle on the lower side of the plurality of lower horizontal supports (71) so as to intersect with the plurality of lower horizontal supports (71) to support the plurality of lower horizontal supports (71).

[0070] Multiple inclined supports (72) are arranged at an angle parallel to the inclination of multiple solar panels (11) and welded to the lower side of multiple lower horizontal supports (71), thereby being arranged at an angle to intersect with the multiple lower horizontal supports (71). In this way, the multiple inclined supports (72) support the multiple lower horizontal supports (71), thereby supporting the multiple solar panels (11), multiple horizontal drainage rails (21), multiple inclined drainage rails (22), waterproof sheet (30), insulation panel (40), etc. located above them. Accordingly, H-shaped steel with excellent bending strength and shear strength is used for each inclined support (72). As shown in FIG. 12, the insulation panel (40) can be formed in the shape of a rectangular plate by filling the space between the multiple intermediate horizontal supports (51) and the multiple lower horizontal supports (71) with insulation material.

[0071] Referring to FIG. 15, each vibration absorbing member (52) is composed of an insulating bracket (521), a first slide plate (522), a second slide plate (523), a lower bracket (524), a compression spring (525), an insulating washer (526), ​​a first tapping screw (5271), a second tapping screw (5272), two short bolts (528), and two long bolts (529). The insulating bracket (521) and the insulating washer (526) are made of an insulating material, and the remaining parts, such as the first slide plate (521) and the second slide plate (522), are made of a metal material. The insulating bracket (521) and the insulating washer (526) may be made of an engineering plastic material, and the remaining parts may be made of a lightweight metal material such as aluminum.

[0072] The insulation bracket (521) is formed in the shape of a square plate rolled into a cross-section "C" shape at both the top and bottom ends, and is structured to cover the top of the first slide plate (522). It is fixed to each intermediate horizontal support (51) while being fitted into the long sides of the cross-section "C" of the first slide plate (522), thereby serving to block heat transfer between the first slide plate (522) and each intermediate horizontal support (51). The insulation bracket (521) is fitted into the long sides of the cross-section "C" of the first slide plate (522) in a structured manner that covers the top of the first slide plate (522) by fitting into the long sides of the cross-section "C" of the first slide plate (522) until the top of the cross-section "C" of the insulation bracket (521) covers the top of the first slide plate (522). The first tapping screw (5271) passes through the center hole of the insulation washer (526) and the insulation bracket (521) in sequence and is fastened to each intermediate horizontal support (51), thereby fixing the insulation bracket (521) to each intermediate horizontal support (51).

[0073] The first slide plate (522) is formed in the shape of a rectangular flat plate with both long sides rolled into a cross-sectional "C" shape, and its upper end is connected to an insulating bracket (521) fixed to each intermediate horizontal support (51) and overlapped with the second slide plate (523). In this way, by connecting the upper end of the first slide plate (522) to the insulating bracket (521) fixed to each intermediate horizontal support (51), the first slide plate (522) is positioned on the lower side of a plurality of inclined drainage rails (22). The first slide plate (522) has a long longitudinal slot with six semicircular holes protruding from it so that the overlap length between the first slide plate (522) and the second slide plate (523) can be adjusted.

[0074] The second slide plate (523) is formed in the shape of a rectangular flat plate with both long sides having a straight cross section and is placed on the upper side of the roof foundation panel (60). The second slide plate (523) is placed on the upper side of the roof foundation panel (60) and moves up and down together with the first slide plate (522) in a state of overlap with the first slide plate (522) according to the change in the gap between the plurality of inclined drainage rails (22) and the roof foundation panel (60). The second slide plate (523) is structured so that the long sides of the straight cross section of the second slide plate (523) are fitted into the long sides of the "C" shape cross section of the first slide plate (522), allowing it to slide while overlapping with the first slide plate (522). A cover with a "C" shape cross section and an open bottom is formed protruding from the bottom of the second slide plate (523).

[0075] Two nut holes are formed in the second slide plate (523). Two single bolts (528) are fastened to the two nut holes formed in the second slide plate (523) while being caught in two of the six semicircular holes of the straight slot formed in the first slide plate (522). The second slide plate (523) slides over the first slide plate (522) by a distance inversely proportional to the average height of the two semicircular holes where the two single bolts (528) are caught among the six semicircular holes of the straight slot formed in the first slide plate (522). The overlap length between the first slide plate (522) and the second slide plate (523) changes according to the position where the second slide plate (523) slides over the first slide plate (522).

[0076] The lower bracket (524) is formed in a "U" shape with an open upper section and is mounted on the roof foundation panel (60). The lower bracket (524) consists of a bottom plate, a left plate, and a right plate, and two wing plates protruding to the left and right sides are formed on the upper sides of the lower bracket (524). A nut hole is formed in each of the two wing plates protruding on the upper sides of the lower bracket (524), and a through hole is formed in the bottom plate of the lower bracket (524). Two long bolts (529) pass through the two through holes formed in the "C" shaped cover on the lower side of the second slide plate (523) and are fastened to the two nut holes formed in the two wing plates of the lower bracket (524), thereby fixing the second slide plate (523) to the lower bracket (524). The second tapping screw (5272) passes through a through hole formed in the bottom plate of the lower bracket (524) and is fastened to the roof foundation panel (60), thereby fixing the lower bracket (524) to the roof foundation panel (60).

[0077] The compression spring (525) moves the second slide plate (523) up and down by being compressed or relaxed according to the change in the gap between the plurality of inclined drainage rails (22) and the roof foundation panel (60), with one end of the compression spring (525) inserted into the lower cross-section “C” shaped cover of the second slide plate (523) and the other end inserted into the cross-section “U” shaped groove of the lower bracket (524). In this way, as the second slide plate (523) moves up and down as the compression spring (525) is compressed or relaxed according to the change in the gap between the plurality of inclined drainage rails (22) and the roof foundation panel (60), the length of each vibration absorbing member (52) in the direction inserted between the plurality of inclined drainage rails (22) and the roof foundation panel (60) changes, and in the process, vibrations generated in at least one of the plurality of inclined drainage rails (22) and the roof foundation panel (60) are absorbed.

[0078] The length of each vibration absorbing member (52) in the direction inserted between the plurality of inclined drainage rails (22) and the roof foundation panel (60) changes according to the overlap length between the first slide plate (522) and the second slide plate (523) and the amount of vertical movement of the second slide plate (523). According to the present embodiment, even if the spacing between the plurality of inclined drainage rails (22) and the roof foundation panel (60) is not uniform, the overlap length between the first slide plate (522) and the second slide plate (523) can be adjusted to match the uneven spacing between the plurality of inclined drainage rails (22) and the roof foundation panel (60), so the amount of vibration absorption between the plurality of vibration absorbing members (52) can be maintained uniformly against external forces such as earthquakes and wind. As a result, the vibration load is evenly distributed among the multiple vibration absorbing members (52), and the overall vibration absorption performance of the multiple vibration absorbing members (52) can be improved.

[0079] The present invention has been described above with reference to its preferred embodiments. Those skilled in the art will understand that the present invention may be embodied in modified forms without departing from the essential characteristics of the invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the invention is defined by the claims, not by the foregoing description, and all variations within the scope of the claims should be interpreted as being included in the invention. Explanation of the symbols

[0080] 11 ... solar panels 12 ... finishing cover 13 ... boundary cover 21 ... horizontal drainage rail 211 ... Main horizontal drainage section 212 ... central horizontal drainage section 210 ... drainage hole 22 ... inclined drainage rail 221 ... Main sloped drainage section 222 ... central slope drainage section 223 ... left sloped drainage section 224 ... right slope drainage section 23 ... drainage rail coupler 231 ... inner joint 232 ... outer joint 233 ... intermediate buffer section 24 ... connecting clip 30 ... waterproof sheet 40 ... insulation panel 51 ... intermediate horizontal support 52 ... vibration absorbing member 521 ... insulation bracket 522 ... 1st slide plate 523 ... 2nd slide plate 524 ... lower bracket 525 ... compression spring 526 ... insulating washer 5271 ... 1st tapping screw 5272 ... 2nd tapping screw 528 ... single bolt 529 ... Jangbolt 60 ... roof foundation panels 71 ... lower horizontal support 72 ... inclined support

Claims

Claim 1 A plurality of solar panels (11), each formed in the shape of a square panel and arranged in a matrix structure so as to be adjacent to one another; a plurality of horizontal drainage rails (21) arranged horizontally below the left-right boundary between the plurality of solar panels (11) to receive rainwater leaking through the left-right boundary between the plurality of solar panels (11); and a plurality of inclined drainage rails (22) arranged obliquely below the front-back boundary between the plurality of solar panels (11) to receive rainwater leaking through the front-back boundary between the plurality of solar panels (11) and rainwater flowing in from the plurality of horizontal drainage rails (21) to induce a downward flow of rainwater. Each includes a plurality of drainage rail couplers (23) that are arranged between two adjacent inclined drainage rails (22) in the front-rear direction among the plurality of inclined drainage rails (22) and connect the two adjacent inclined drainage rails (22) in the front-rear direction, and each inclined drainage rail (22) is formed in a cross-sectional shape of "[" and includes a main inclined drainage section (221) that receives rainwater leaking through the front-rear boundary between the plurality of solar panels (11) and rainwater flowing in from the plurality of horizontal drainage rails (21) to induce a downward flow of rainwater, and the upper part of the side plates of the main inclined drainage section (221) is formed in an "I" shape with a cross-sectional shape that is symmetrical to each other so that the outer surface and the inner surface of both sides are recessed, and each drainage rail coupler (23) is of the inclined drainage rail (22) located on the lower side among the two adjacent inclined drainage rails (22) in the front-rear direction. An inner coupling part (231) coupled to the inner side of the inclined drainage rail (22) located below, in a structure that is fitted into the recessed portions on the upper side of the inner side of the main inclined drainage part (221) of the main inclined drainage part (221) while in close contact with the upper surface of the bottom plate of the main inclined drainage part (221) and the inner surface of the side plates;A roof-integrated photovoltaic power generation device characterized by comprising: an outer coupling part (232) coupled to the outer side of the inclined drainage rail (22) located on the upper side, in a structure that covers the recessed portions on the upper outer sides of the main inclined drainage part (221) of the inclined drainage rail (22) located on the upper side, while in close contact with the lower surface of the bottom plate and the outer surface of the side plates of the main inclined drainage part (221) of the inclined drainage rail (22) located on the upper side; and an intermediate buffer part (233) formed in a "[" shape with a cross-section symmetrical to each other so that the inner surfaces on both sides are recessed, and integrally connected between the inner coupling part (231) and the outer coupling part (232). Claim 2 delete Claim 3 delete Claim 4 In claim 1, the upper portions of the side plates of the inner coupling part (231) are formed in an "L" shape such that the outer surfaces of both sides protrude and the inner surfaces of both sides expand, and the inner coupling part (231) is formed in a structure in which the upper portions of the outer surfaces of both sides of the inner coupling part (231) are fitted into the recessed portions of the inner surfaces of both sides of the upper portions of the side plates of the inner coupling part (231) of the main inclined drainage part (221) of the inclined drainage rail (22) located on the lower side, while the inner portions of the side plates are in close contact with the upper surface of the bottom plate of the main inclined drainage part (221) of the inclined drainage rail (22) located on the lower side, and the protruding portions of the outer surfaces of both sides of the upper portions of the side plates of the inner coupling part (231) of the main inclined drainage part (221) of the inclined drainage rail (22) located on the lower side are fitted into the recessed portions of the inner surfaces of both sides of the upper portions of the side plates of the main inclined drainage part (221) of the inclined drainage rail (22) located on the lower side, and is coupled to the inner side of the inclined drainage rail (22) located on the lower side among the two inclined drainage rails (22) adjacent to each other in the front-rear direction. Claim 5 delete Claim 6 In claim 1, the upper portions of the side plates of the outer coupling part (232) are formed in an "L" shape such that the outer surfaces of both sides protrude and the inner surfaces of both sides are expanded, and the outer coupling part (232) is connected to the outer side of the upper inclined drainage rail (22) among the two inclined drainage rails (22) adjacent to each other in the front-rear direction, in a structure in which the recessed portions of the outer surfaces of the upper portions of the side plates of the main inclined drainage part (221) of the inclined drainage rail (22) located on the upper side are covered by the expanded portions of the inner surfaces of both sides of the upper portions of the side plates of the outer coupling part (232), in a state of close contact with the lower surface of the bottom plate of the main inclined drainage part (221) of the inclined drainage rail (22) located on the upper side. Claim 7 A roof-integrated photovoltaic power generation device according to claim 1, wherein each inclined drainage rail (22) is formed in the form of a partition protruding from the longitudinal center of the upper surface of the bottom plate of the main inclined drainage section (221) so as to divide the interior of the main inclined drainage section (221) into two separate spaces, and further includes a central inclined drainage section (222) that supports two solar panels (11) adjacent to each other in the left-right direction among the plurality of solar panels (11), and at the same time receives rainwater leaking through the front-rear boundary between the two solar panels (11) adjacent to each other in the left-right direction to induce a downward flow of rainwater. Claim 8 In claim 7, the central inclined drainage section (222) is formed in the form of a partition having an upper section with an open cross-section "C" shape and two protruding plates on both sides that protrude in a flat shape on both the left and right sides, and supports two solar panels (11) adjacent to each other in the left and right directions by mounting them on the two protruding plates of the central inclined drainage section (222), and the upper section with a cross-section "C" shape of the central inclined drainage section (222) receives rainwater leaking through the front-rear boundary between the two solar panels (11) adjacent to each other in the left and right directions and induces a downward flow of rainwater, characterized in that it is a roof-integrated solar power generation device. Claim 9 In claim 7, the roof-integrated photovoltaic power generation device is further characterized by including a left-sided inclined drainage section (223) in which each inclined drainage rail (22) is formed in the shape of a wing plate protruding to the left from the left side of the central inclined drainage section (222), and supports the horizontal drainage rail (21) located on the left among two horizontal drainage rails (21) adjacent to each other in the left-right direction among the plurality of horizontal drainage rails (21), and at the same time receives rainwater flowing down along the outer surface of the horizontal drainage rail (21) located on the left to induce a downward flow of rainwater. Claim 10 In claim 9, the left inclined drainage section (223) is formed in a flat plate shape having a cross-section "C" shape end that is open to the upper side, and the left inclined drainage section (223) supports the horizontal drainage rail (21) located on the left side in a structure in which the horizontal drainage rail (21) located on the left side is mounted on the cross-section "C" shape end of the left inclined drainage section (223), and the cross-section "C" shape end of the left inclined drainage section (223) receives rainwater flowing down along the outer surface of the horizontal drainage rail (21) located on the left side to induce a downward flow of rainwater, characterized by a roof-integrated photovoltaic power generation device. Claim 11 In claim 7, the roof-integrated photovoltaic power generation device is further characterized by including a right-sided inclined drainage section (224) in which each inclined drainage rail (22) is formed in the shape of a wing plate protruding to the right from the right side of the central inclined drainage section (222), and supports the horizontal drainage rail (21) located on the right among two horizontal drainage rails (21) adjacent to each other in the left-right direction among the plurality of horizontal drainage rails (21), and at the same time receives rainwater flowing down along the outer surface of the horizontal drainage rail (21) located on the right to induce a downward flow of rainwater. Claim 12 In claim 11, the right inclined drainage section (224) is formed in the shape of a flat plate having a cross-section "C" shape end that is open to the upper side, and the right inclined drainage section (224) supports the horizontal drainage rail (21) located on the right side in a structure in which the horizontal drainage rail (21) located on the right side is mounted on the cross-section "C" shape end of the right inclined drainage section (224), and the cross-section "C" shape end of the right inclined drainage section (224) receives rainwater flowing down along the outer surface of the horizontal drainage rail (21) located on the right side to induce a downward flow of rainwater, characterized by a roof-integrated photovoltaic power generation device. Claim 13 In claim 1, each horizontal drainage rail (21) is formed in a cross-sectional shape [" and includes a main horizontal drainage section (211) that receives rainwater leaking through the left-right boundary between the plurality of solar panels (11), and the rainwater received in the main horizontal drainage section (211) flows into two inclined drainage rails (22) among the plurality of inclined drainage rails (22) that are positioned on the lower side of both ends of the main horizontal drainage section (211) through drainage holes (210) formed at each end of the bottom plate of the main horizontal drainage section (211). Claim 14 In claim 13, the roof-integrated photovoltaic power generation device is further characterized by each horizontal drainage rail (21) being formed in the form of a partition protruding from the longitudinal center of the upper surface of the bottom plate of the main horizontal drainage section (211) so as to divide the interior of the main horizontal drainage section (211) into two separate spaces, and supporting two solar panels (11) adjacent to each other in the front-rear direction among the plurality of solar panels (11), while simultaneously including a central horizontal drainage section (212) that receives rainwater leaking through the left-right boundary between the two solar panels (11) adjacent to each other in the front-rear direction. Claim 15 In claim 14, the central horizontal drain (212) is formed in the form of a partition having an upper section with an open upper cross-section "C" shape and two protruding plates on both sides that protrude in a flat shape on both the left and right sides, and supports two solar panels (11) adjacent to each other in the front-rear direction by mounting them on the two protruding plates of the central horizontal drain (212), and the upper section of the central horizontal drain (212) with a cross-section "C" shape receives rainwater leaking through the left-right boundary between the two solar panels (11) adjacent to each other in the front-rear direction, characterized in that it is a roof-integrated solar power generation device.

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