KR101920254B1 - Solar Energy Generation Greenhouse Using Easy Replacement of Solar Cell - Google Patents

Abstract

A solar power generation greenhouse using a solar cell that is easily replaceable according to an aspect of the present invention includes a roof having a plurality of inclined surfaces coupled to each other, a frame forming an outer wall, A crystalline solar cell provided on one side of the roof for receiving direct sunlight to absorb sunlight to produce electricity; and an outer wall of the greenhouse, An amorphous photovoltaic module provided on the inner side of the glass wall surrounding the other side roof of the glass wall and detachable from the frame so as to easily absorb and transmit sunlight and to be replaced; A horizontal frame having a fixing hole at a lower end thereof so that the solar module can be detached from the frame; A vertical frame coupled to the frame vertically to form an outer wall of the greenhouse; a linking member inserted into the horizontal frame and the vertical frame to vertically connect the vertical frame to the horizontal frame; And a power storage system for storing electric energy generated from the solar module.

Description

(Solar Energy Generation Greenhouse Using Easy Replacement of Solar Cell)

The present invention relates to a photovoltaic power generation greenhouse using a solar cell which can be easily replaced, and more particularly, to a solar power generation greenhouse using a solar cell module which is detachable from a frame on the rear surface of a glass wall forming a greenhouse, The present invention relates to a photovoltaic power generation greenhouse using a solar cell that can be easily replaced and can be effectively maintained.

A greenhouse is a private building that is made of transparent double glazes or secrets to grow plants (flowers, vegetables, fruits, etc.) and transmits light from the outside. It protects plants from the effects of weather, temperature or insects, Making it possible to grow smoothly and quickly. Particularly, in the tropical region or in one region, the growth promotion effect of the plant due to the appropriate temperature and humidity environment provided by the greenhouse is more remarkable.

These greenhouses generally have a roof that can transmit light. Solar light is irradiated to plants through the roof to allow plants to perform photosynthesis. Furthermore, the greenhouse has a number of air conditioning facilities that control temperature and humidity, and controls the temperature and humidity in the greenhouse to be optimal for plant growth. In addition, equipped with a sprinkler, water is regularly sprayed on plants.

As these devices operate, greenhouses consume large amounts of power. As a result, the electricity tax is a heavy burden for the users (farmers, etc.) who use the greenhouse. Here, a technique has been proposed in which a light-transmissive amorphous solar cell is attached to a place where the light is strongest in the greenhouse and the radiation is the most sufficient (generally, a roof), and power is supplied to the plant without affecting light irradiation.

Amorphous solar cells, however, still have some translucency, but they still cause much shading or absorption of sunlight, and if there is not enough sunlight, it affects the growth of the plant. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an amorphous solar cell in which the amorphous solar cell is installed on the outer wall of a greenhouse, The present invention provides a photovoltaic power generation greenhouse using a solar cell capable of effectively performing maintenance by replacing the light required for the solar cell with an appropriate intensity and position.

According to an aspect of the present invention, there is provided a photovoltaic power generation greenhouse using a solar cell that is easy to replace, including a roof having a plurality of inclined surfaces coupled to each other, a frame forming an outer wall, A solar cell having a glass wall for transmitting sunlight to grow sunny plants, a crystalline solar cell provided on one side of the roof for introducing direct sunlight to absorb sunlight to generate electricity, An amorphous photovoltaic module provided on an inner side of the glass wall surrounding the outer wall of the greenhouse and the other side roof of the crystalline solar cell and detachable from the frame so as to easily absorb and transmit sunlight and to be replaced; The amorphous photovoltaic module is fixed to the lower end of the frame so as to be detachable from the frame. A vertical frame which is vertically coupled to the horizontal frame and forms an outer wall of the greenhouse, a connecting member inserted into the horizontal frame and the vertical frame to vertically connect the vertical frame to the horizontal frame, And a power storage system for storing electric energy generated from the crystalline solar cell and the amorphous solar module.

The glass wall is formed by a spacer provided at an end portion and is formed to maintain a predetermined gap therebetween. The functional glass windows block ultraviolet rays. A plurality of functional glass windows are provided between the plurality of functional glass windows, And a joint frame which is bonded to the frame by being adhered to the functional glass window by a structural adhesive.

The amorphous solar module includes an amorphous solar cell provided on an inner side of the glass wall to be detachable from the horizontal frame and absorbing and transmitting sunlight; A cable for passing electrical energy generated by absorption of the amorphous solar cell to the power storage system, the cable being provided on an upper portion of the amorphous solar cell; A detachable frame having an upper wiring hole formed therein and receiving the amorphous solar cell and the transmission window therein, the detachable frame being detachable from the frame by a fixing hardware; and an amorphous solar cell, A departure prevention frame for preventing the window from being released to the room side Can be compared.

The horizontal frame includes a fixing clip provided on the outdoor side of the horizontal frame and fixed to the frame by the fixing hardware to fix the coupling frame, and a fixing clip coupled to a lower end of the horizontal frame and an upper room side of the detachable frame And a cover for preventing the cable from being exposed to the outside.

The horizontal frame includes a body for partially opening a lower end thereof and surrounding the connection member, a gasket provided on an outdoor side of the body for blocking heat bridging through the joint frame, and a gasket for receiving one end of the gasket and the fixing clip A hollow hole provided at a lower end of the outdoor side of the body to block thermal bridging between outdoor and indoor spaces; a housing space provided on the rear side of the frame for blocking exposure of the cable, .

According to the present invention, the amorphous solar module is detachably installed in the frame for forming the greenhouse, and the installation position is changed in order to supply the light necessary for growing the plant Or replacement due to breakage or the like can be facilitated.

1 is a perspective view illustrating a solar power generation greenhouse using a solar cell that can be easily replaced according to an embodiment of the present invention.
2 is a perspective view illustrating a frame for forming a greenhouse according to an embodiment of the present invention;
3 is a cross-sectional view of an amorphous solar module according to an embodiment of the present invention.
4 is a longitudinal sectional view of an amorphous solar module according to an embodiment of the present invention.
5 is a cross-sectional view illustrating an amorphous solar module mounted on a frame according to an embodiment of the present invention.
FIG. 6 is an exploded cross-sectional view showing the amorphous solar module shown in FIG. 5 installed on a frame.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a photovoltaic greenhouse using a solar cell according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a solar power generation greenhouse using a solar cell that can be easily replaced according to an embodiment of the present invention.

As shown in FIG. 1, a solar power generation greenhouse using a solar cell according to an embodiment of the present invention is formed by joining a plurality of inclined surfaces to form a roof 120, and in order to grow sunny plants through sunlight, A crystalline solar cell 300 provided on one side of the roof 120 into which direct sunlight flows and absorbing sunlight to produce electricity; a greenhouse 100 And an outer wall 130 of the crystalline solar cell 300 and the other side roof 120 of the crystalline solar cell 300 to absorb and transmit sunlight and to be easily replaced, The amorphous photovoltaic module 400 surrounds the frame 110 on the inner side of the glass wall 200 and removes the amorphous photovoltaic module 400 from the frame 110 A horizontal frame 500 having a fixing hole, And a power storage system 700 for storing electric energy generated from the crystalline solar cell 300 and the amorphous solar cell module 400.

The greenhouse 100 is a structure for cultivating various plants by controlling light rays, temperature, humidity, and the like, and the temperature inside the greenhouse 100 can be controlled according to the growing method of plants. The greenhouse 100 is supplied with sunlight, and solar power can be generated at the roof 120, especially the outer wall 130, so as to minimize the blind spot due to shadows or other obstacles.

2, the greenhouse 100 includes a frame 110 that forms the outer wall 130 and the roof 120, and a frame 110 that surrounds the frame 110 and emits sunlight into the greenhouse 100 A glass wall 200 formed in a double and triple structure to allow the greenhouse 100 to pass through the greenhouse 100, an illumination device provided in the greenhouse 100 to compensate for insufficient wavelengths of the sunny plants or to control nighttime growth, The crystalline solar cell 300 installed on the south side is provided with the indoor side surface of the outer wall 130 and the indoor space of the roof 120 to diffuse solar light transmitted without being absorbed by the crystalline solar cell 300, And a light shielding film provided on the other surface of the outer wall 130 on which the light diffusion film is installed and shielding sunlight flowing into the greenhouse 100.

The frame 110 may be assembled and installed in various shapes on the ground so that the shape of the greenhouse 100 may be variously formed. The frame 110 may be formed of various materials such as steel or aluminum to support the load of the greenhouse 100.

The shape of the outer wall 130 and the roof 120 may be determined by the frame 110 and the frame 110 forming the outer wall 130 may include a horizontal frame 500 and a vertical frame 600 Can be distinguished.

At this time, a connecting member 150 is provided at a position where the horizontal frame 500 and the vertical frame 600 are orthogonal to each other, and the vertical frame 600 may be vertically installed in the horizontal frame 500. The connecting member 150 and the horizontal frame 500 and the vertical frame 600 may be coupled by a fixed hardware 140. The vertical frame 600 may have a separate receiving space 550 .

The glass wall 200 is coupled to the outside of the frame 110 in a double or triple manner to transmit sunlight and to prevent heat bridging between outdoor and indoor.

The illumination device adjusts the irradiation amount of the LED by supplying electric energy to a plurality of LEDs installed in the greenhouse 100. The illumination device adjusts the irradiation amount according to the type of the plant cultivated in the greenhouse 100 . In addition, when LEDs of various wavelengths are mounted in the greenhouse 100, electricity can be supplied only to LEDs of a desired wavelength, if necessary, so that light of a wavelength necessary for plants in the greenhouse 100 can be supplied.

Thus, the illumination device supplies the electric energy accumulated from the power storage system 700 to the illumination device. That is, after determining whether or not the amount of solar radiation is insufficient, it is possible to supply the insufficient amount of solar radiation by supplying electric energy from the power storage system 700 to the lighting device when the amount of solar radiation is insufficient.

Such a lighting device can supply light of various wavelengths to sunny plants even at nighttime or when the weather is cloudy due to insufficient amount of solar radiation.

The frame 110 of the greenhouse 100 and the outer wall 130 formed by the glass wall 200 may extend upward from the ground and the roof 120 may be formed at the upper end of the outer wall 130 So that electricity can be produced by the sunlight.

The roof 120 includes a first roof 121 on the south side where the crystalline solar cell 300 is installed and a second roof 122 joined to one end surface of the first roof 121 at a predetermined angle. .

The first roof 121 may be located in a southward direction with a large inflow of sunlight and a direct sunlight may flow directly into the crystalline solar cell 300 to generate a large amount of electrical energy. In addition, the first roof 121 and the second roof 122 may be formed in various forms.

The light diffusion film is provided on the inner surface of the glass wall 200 corresponding to the roof 120 of the greenhouse 100 having the roof 120, 300 can be diffused and transferred to the sunny plants in the greenhouse 100.

The material of such a light diffusion film can be an organic material having many light transmittance and transparency. The organic material may be acrylic resins, unsaturated polyester resins, urethane resins, epoxy resins, or melamine resins.

The light diffusion film is formed of a transparent material for light transmittance. When sunlight enters the light diffusion film, the light is diffused, and thus light of a desired wavelength range can be guided. When such a light diffusion film is used, not only a short wavelength but also a light absorption of a long wavelength can be greatly improved.

The crystalline solar cell 300 may be installed in the form of a grid between the double glasses of the first roof 121 having a large inflow amount of direct sunlight. In order to control the solar radiation amount, a crystalline silicon It can be formed as a solar cell.

The crystalline solar cell 300 is disadvantageous in that a dye-sensitized solar cell (DSSC) such as the amorphous solar module 400 can not crack or function when the inflow of direct sunlight is high, In the roof 120 having a large amount of direct light from the outside.

The crystalline solar cell 300 is manufactured by cutting a silicon ingot into a thin substrate. The crystalline silicon solar cell 300 is classified into a single crystal type and a polycrystalline type according to a method of manufacturing a silicon ingot. Basically, the crystalline silicon solar cell 300 has a pn homojunction, And is used for solar cells. A single crystal is a high-quality material having a high purity and a low crystal defect density and can achieve a high efficiency, but it is expensive, and a polycrystalline material produces a cell having a degree of efficiency that can be commercialized by treating a relatively low- The theoretical maximum efficiency of this crystalline silicon solar cell is about 25%, and efficiency close to this limit has already been reported at the laboratory level. However, the efficiency of a cell fabricated using monocrystalline or polycrystalline wafers for mass production is about 14% to 17%. At this time, the conversion efficiency of 100% means that 1 KW of power is produced at a width of 1 m 2.

FIG. 3 is a cross-sectional view illustrating an amorphous solar module according to an embodiment of the present invention, FIG. 4 is a vertical sectional view illustrating an amorphous solar module according to an embodiment of the present invention, and FIG. 5 is a cross- Sectional view showing a state in which the amorphous solar module according to the present invention is installed on a frame.

3 to 5, the amorphous solar module 400 according to an exemplary embodiment of the present invention may be constructed such that the amorphous solar module 400 is detached from the frame 110 by the horizontal frame 500, An amorphous solar cell 410 provided on the inner side of the glass wall 200 to absorb and transmit sunlight so that the amorphous solar cell 410 can be connected to the inner side of the amorphous solar cell 410, And an electric energy generated by absorption of the amorphous solar cell 410 in the upper portion of the amorphous solar cell 410 is transmitted to the storage system 420. [ A cable 430 for transferring the amorphous solar cell 410 and the transmission window 420 to the main body 700 and a wiring hole 441 through which the cable 430 is inserted are accommodated in the upper portion of the amorphous solar cell 410 and the transmission window 420 By the fixed hardware 140, A detachable frame 440 detachable from the frame 110 and a detachable frame 440 coupled to the inside of the detachable frame 440 to prevent the amorphous solar cell 410 and the transmissive window 420 from being released to the room A frame 450 may be provided.

When the amorphous solar module 400 is used over the entire area of the greenhouse 100, the amorphous photovoltaic module 400 can provide a uniform sunshine condition in the greenhouse 100, compared to a solar cell having a cell spacing. Since the outer wall 130 of the greenhouse 100 may be formed in various shapes using curved lines or straight lines, the amorphous photovoltaic module 400 may be formed of a flexible material and can be bent.

The amorphous solar cell 410 may be a dye-sensitized solar cell in which the wavelength and the transmittance of the transmitted light are selected by adjusting the type and concentration of the dye that plays a role of absorbing sunlight or the type and thickness of the electrode layer. ; DSSC).

Here, the dye-sensitized solar cell used in the amorphous solar cell 410 is different from a wafer-type silicon or compound solar cell using pn junctions. When light having a wavelength of visible light is incident, the dye- The dye molecules, the oxide semiconductor that can accept excited electrons, and the electrolyte that reacts with electrons that do work and return to the cell.

Well known dye-sensitized solar cells have been published by Gratzel et al. In Switzerland. The photo-electrochemical solar cell presented by Gratel et al. Is composed of a photosensitive dye molecule capable of absorbing visible light to generate an electron-hole pair, and a nanoparticle titanium dioxide (TiO 2) with dye molecules adsorbed thereon An oxide semiconductor electrode, a counter electrode coated with platinum or carbon, and an electrolyte solution filled therebetween. This photochemical cell has attracted attention because it is cheaper to manufacture than a wafer type solar cell using p-n junction.

In the dye-sensitized solar cell, the generation of electrons through absorption of light is performed in the dye, and the oxide semiconductor such as titanium dioxide used as an electrode merely moves generated electrons to the electricity storage system 700 made of a conductive material, It is possible to select a wavelength by changing the wavelength band which is absorbed by the dye and generates electrons depending on what kind of dye is used.

In addition, the transmittance can be easily controlled by controlling the type and concentration of the dye adsorbed on the electrode or by changing the type and thickness of the electrode layer.

When the dye-sensitized solar cell is used as the amorphous solar cell 410, the type and concentration of the dye that plays a role of absorbing light or the type and thickness of the electrode layer are selected to select the wavelength and transmittance of the transmitted light. . That is, in the dye-sensitized solar cell, the wavelength to be transmitted can be controlled only by changing the dyes adsorbed on the oxide semiconductor such as TiO 2, and it is also possible to change the transmittance by changing the kind and thickness of the electrode layer, . Further, the wavelength used in the power generation for generating electricity in the dye-sensitized solar cell may vary depending on the dye to be used.

However, unlike the crystalline solar cell 300, the amorphous solar cell 410 needs maintenance such as replacement because the amorphous solar cell 300 can not crack or function when the inflow amount of direct light is high.

Therefore, the amorphous solar cell 410 may be detachably attached to the rear surface of the glass wall 200 by a horizontal frame 500 that surrounds the frame 110 to facilitate replacement for maintenance.

In addition, since the amorphous solar cell 410 is vulnerable to ultraviolet rays, it is possible to transmit sunlight to the amorphous solar cell 410 after blocking the ultraviolet rays from the glass wall 200.

As shown in FIG. 6, the amorphous solar cell 410 may be provided with a transmission window 420 on an indoor side thereof and may be applied to an outdoor side of the transmission window 420 to be detachable from the horizontal frame 500 .

The transmissive window 420 may transmit sunlight, which is not absorbed by the amorphous solar cell 410, to the indoor space, and may be transmitted to the sunny plants.

The amorphous solar cell 410 may be provided with a cable 430 that converts sunlight absorbed by the amorphous solar cell 410 into electrical energy and transfers the same to the power storage system 700.

At this time, the upper part of the frame 110, which forms the greenhouse 100, is received in the fixing hole of the horizontally connected horizontal frame 500, and the lower end and both sides of the upper part are fixed to the frame 110 The wiring hole 441 may be provided on the upper portion of the attaching / detaching frame 440 to prevent the cable 430 from being received in the horizontal frame 500.

The detachable frame 440 may be provided with a detachment prevention plate 442 on the outdoor side so that the amorphous solar cell 410 is not released to the outdoor side and a cover 570 of the horizontal frame 500, The engaging protrusion 443 may be provided so that the preventing frame 450 is engaged.

A caulking material may be provided on the lower end and both sides of the detachable frame 440 to enhance the integrity with the horizontal frame 500. A surface in contact with the horizontal frame 500 may have a separate hollow portion.

The detachment prevention frame 450 is coupled to both sides of the detachable frame 440 and the inner side of the lower end of the detachable frame 440 to prevent the detachment of the transmission window 420. The detachable frame 440 is fixed to the frame 110 It is possible to prevent the fixed hardware 140 from being exposed.

The amorphous solar cell module 400 may be inserted into the horizontal frame 500 provided on the inner side of the glass wall 200 so that the amorphous solar cell 410 may be broken or the amorphous solar cell 410 may be amorphous And can be easily and effectively detached from the frame 110 when the solar cell 410 is being replaced.

At this time, the glass wall body 200 provided on the front surface of the amorphous solar module 400 is formed by a spacer 211 provided at the end portion, A sealant 220 interposed between the functional glass windows 210 and the plurality of functional glass windows 210 to block heat bridging between the room and the outside and a structural adhesive 231 on the interior side of the functional glass windows 210, And an engaging frame 230 that is attached to the frame 110 by being attached thereto.

The coupling frame 230 may be firmly fixed to the functional glass window 210 by a structural adhesive 231 at the end of the functional glass window 210. The functional glass window 210 and the coupling frame 230 A separate gasket 520 may be provided to block the thermal bridging phenomenon.

The coupling frame 230 may be elongated at the end of the functional window 210 so as to be coupled to the horizontal frame 500.

The horizontal frame 500 is provided on the outdoor side of the horizontal frame 500 and includes a fixing clip 560 fixed to the frame 110 by the fixing hardware 140 to fix the coupling frame 230, And a cover 570 coupled to the lower end of the horizontal frame 500 and the upper indoor side of the detachable frame 440 to prevent the cable 430 from being exposed to the outside.

The horizontal frame 500 includes a body 510 surrounding the connection member 150 and a gasket 520 disposed on the outdoor side of the body 510 to block heat bridging through the connection frame 230. [ A plurality of receiving holes 530 for receiving one end of the gasket 520 and the fixing clip 560 and a plurality of receiving holes 530 disposed at the lower end of the outdoor side of the body 510 to block heat- A hollow hole 540 and a receiving space 550 provided on the rear surface of the frame 110 for blocking exposure of the cable 430 by providing the cable 430 on the inner side.

The gasket 520 and the coupling frame 230 are fixed to the body 510 at a position extending from the outdoor side to the lower side of the body 510. [ A receiving hole 530 in which a part of the fixing clip 560 is accommodated can be provided.

In addition, the hollow hole 540 may be formed at the lower end of the body 510, and a seating part on which the amorphous photovoltaic module 400 is seated may be provided on an inner side of the hollow hole 540, A gasket 520 may be provided to block heat bridging between the body 510 and the amorphous solar module 400.

A housing space 550 is provided on the inner side of the body 510 so that the cable 430 can be connected to the inside of the horizontal frame 500 without being exposed to the outside to transmit electric energy to the power storage system 700 .

The receiving space 550 can prevent exposure by the cover 570 and the horizontal frame 500 and the cover 570 in which the receiving space 550 is formed are prevented from being held by the fitting groove 571, Can be combined by fitting.

The outer side of the cover 570 is fitted with a fitting groove 571 to be inserted into the coupling protrusion 443 of the detachable frame 440 and fixed by the horizontal frame 500 and the detachable frame 440 .

One end of the fixing clip 560 is received in a groove formed at the center of the coupling frame 230 and the other end of the fixing clip 560 is penetrated by the fixing hardware 140, (Not shown).

The fixing clip 560 may be provided according to the number of the coupling frames 230. When the coupling frame 230 is provided at the upper and lower ends of the frame 110, 560 may be arranged at predetermined intervals so that the fixed hardware 140 may penetrate the center of the fixing clip 560. [

Although the present invention has been described in connection with the solar power generation greenhouse using the solar cell easily replaceable according to the embodiment of the present invention, the spirit of the present invention is not limited to the embodiments shown in this specification. Those skilled in the art, who understands the spirit of the present invention, can readily suggest other embodiments by adding, changing, deleting, adding, or the like of components within the scope of the same idea, I would say.

100: greenhouse 110: frame
120: roof 130: outer wall
200: glass wall 300: crystalline solar cell
400: amorphous solar module 410: amorphous solar cell
420: transmission window 430: cable
440: attachment / detachment frame 450: separation prevention frame
500: Horizontal frame 600: Vertical frame

Claims (5)

A roof having a plurality of inclined surfaces joined together, and a frame forming an outer wall,
A greenhouse surrounded by the outside of the frame and having a glass wall for transmitting sunlight for growing sunny plants,
1. A solar cell comprising: a crystalline solar cell provided on one side of a roof through which direct light enters, absorbing solar light to produce electricity;
An amorphous photovoltaic module mounted on the outer wall of the greenhouse and on the inner side of the glass wall surrounding the other side roof of the crystalline solar cell,
A horizontal frame formed horizontally on an inner side of the glass wall and having a fixing hole at a lower end thereof so that the amorphous solar module can be detached from the frame,
A vertical frame coupled to the horizontal frame to form an outer wall of the greenhouse,
A connecting member inserted into the horizontal frame and the vertical frame to connect the vertical frame to the horizontal frame,
And a power storage system for accumulating electric energy generated from the crystalline solar cell and the amorphous solar module,
Wherein the glass wall comprises a plurality of functional glass windows formed by spacers provided at the ends,
A sealant disposed between the plurality of functional glass windows to block heat bridging between indoor and outdoor,
And a joining frame joined to the frame by being adhered to the functional glass window by a structural adhesive,
The amorphous solar module includes an amorphous solar cell provided on an inner side of the glass wall to be detachable from the horizontal frame and absorbing and transmitting sunlight,
A transmission window coupled to an inner side surface of the amorphous solar cell and transmitting sunlight penetrating through the amorphous solar cell to the room;
A cable provided on the amorphous solar cell for transmitting electrical energy generated by absorption by the amorphous solar cell to the power storage system;
A detachable frame having a wiring hole through which the cable penetrates and accommodating the amorphous solar cell and the transmission window therein and being detachable from the frame by a fixing hardware;
And a separation preventing frame coupled to the interior side of the detachable frame to prevent the amorphous solar cell and the transmission window from being separated toward the inside of the room.
delete delete The method according to claim 1,
Wherein the horizontal frame is provided on the outdoor side of the horizontal frame and is fixed to the frame by the fixing hardware to fix the coupling frame,
And a cover coupled to the lower end of the horizontal frame and the upper indoor side of the detachable frame to prevent the cable from being exposed to the outside.
5. The method of claim 4,
The horizontal frame includes a body partially opening the lower end and surrounding the connection member,
A gasket provided on an outdoor side of the body to block heat bridging through the joint frame,
A plurality of receiving holes for receiving one end of the gasket and the fixing clip,
A hollow hole provided at the lower end of the outdoor side of the body to block heat bridging between the outdoor and the indoor,
And a receiving space provided on the rear surface of the frame for blocking exposure of the cable by providing the cable inside the solar cell.

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