JP2013076281A - Roll screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll screen device which is easy to use as a power generator.SOLUTION: In a roll screen device 1, when a screen 10 arranged with a solar cell module 20 becomes a fully open state where the screen 10 is entirely pulled out of a winding pipe 30, a pair of main output terminals are electrically connected through a connection mechanism 40 to output terminals having a corresponding polarity of the solar cell module 20 to supply electric power to a power supply target apparatus, and when the screen 10 gets out of the fully open state, at least one of the electrical connections between the main output terminals and the output terminals is cut.

Description

  The present invention relates to a roll screen device including a screen on which a solar cell module is disposed.

A solar cell is a clean energy source that does not generate greenhouse gases such as CO ₂ that can generate electricity as long as there is sunlight. And since the roll screen device is a device arranged near the window so that sunlight does not enter the indoors through a window or the like, in order to effectively use the sunlight shielded by the roll screen device, It has been proposed to attach solar cells to the screen portion (see, for example, Patent Documents 1 and 2).

  However, at present, a roll screen device that is actually easy to use as a generator has not yet been developed.

JP 2008-42142 A Registered Utility Model No. 3143588

  Then, the subject of this invention is providing the roll screen apparatus which is easy to use as a generator.

  In order to realize a roll screen device that can be used easily as a generator, the inventors have conducted extensive research and found that the inventors have developed a roll screen device that can take output regardless of the amount of the solar cell module screen being drawn. The solar cell module wound around the pipe generates heat and deteriorates. "When preparing m systems with n roll screen devices connected in series and connecting each system to a power conditioner, the output of the power conditioner is the maximum output just by reducing the output of one roll screen device. You may not be able to find the value. I found that there was a problem.

  “A winding pipe, a supporting member that rotatably supports the winding pipe, a pair of positive and negative main output terminals fixed to the supporting member, and a solar cell module disposed on one surface of the present invention. The screen has one end connected to the take-up pipe so that the take-up pipe can be wound and unwound from the take-up pipe, and the state of the screen is arranged by the solar cell module. When all the installed parts are pulled out from the take-up pipe and become fully open, each of the pair of main output terminals and the output terminal of the corresponding polarity of the solar cell module are electrically connected, and the screen The roll screen device has the above-described knowledge. ”The roll screen device is provided with a connection means for cutting off the electrical connection between at least one of the main output terminal and the output terminal when the state of FIG. It is those that led to the based on complete.

  That is, the roll screen device of the present invention has a configuration in which the output of the solar cell module appears at the main output terminal only when all the screens on which the solar cell module is disposed are drawn out. Therefore, this roll screen device is a device that is easy to use as a generator because the above-mentioned problems do not occur.

  The roll screen device according to the present invention has a connecting means that is “a rotation shaft provided on a side surface of one end of the take-up pipe and extending in the length direction of the take-up pipe; The first member to which a pair of positive and negative input electrodes that are electrically connected to the output terminals of the corresponding polarity of the solar cell module are respectively attached, and the main output terminals of the corresponding polarity, respectively. A pair of positive and negative output side electrodes arranged at positions where the first member is rotated around the rotation axis positioned at a predetermined position and when the first member rotates, the input side electrode of the corresponding polarity of the first member is brought into contact. And a predetermined amount or more in the take-up pipe by being sandwiched between the take-up pipe and the screen wound around the take-up pipe, which extends from the first member toward the other end side of the take-up pipe. The screen is caught A posture regulating member that regulates the posture of the first member to a posture in which the pair of input-side electrodes are positioned in the vicinity of the side surface of the winding pipe, and a posture control member that is sandwiched between the screen and the winding pipe. And a posture control member for causing the first member when the rotary shaft is positioned at a predetermined position to take a posture in which the pair of input side electrodes and the pair of output side electrodes are in contact with each other. It is also preferable to keep it. This is because, if such a configuration is adopted, the roll screen device can be manufactured at low cost.

  Further, when the above configuration is adopted in the roll screen device of the present invention, in order to improve the contact state between the input side electrode and the output side electrode, “the second holding the pair of output side electrodes is used. A magnet is attached to one member of the member and the first member, and a ferromagnetic member is attached to a portion of the other member that faces the magnet ”.

  According to the present invention, it is possible to provide a roll screen device that can be easily used as a generator.

FIG. 1 is an external view of a roll screen device according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of a screen included in the roll screen device according to the embodiment. Drawing 3 is an explanatory view of the composition of the screen which can be adopted for the roll screen device concerning an embodiment. FIG. 4 is an explanatory diagram of a configuration of a screen that can be employed in the roll screen device according to the embodiment. FIG. 5 is an external view of the roll screen device according to the embodiment centering on the connection mechanism. FIG. 6 is an external view of the main output terminal portion in the connection mechanism. FIG. 7 is a right side view of the roll screen device according to the embodiment. FIG. 8 is an explanatory diagram of the answerable range of the movable part in the roll screen device according to the embodiment. FIG. 9 is an explanatory diagram of the operation of the connection mechanism when the screen is pulled out (unrolled). FIG. 10 is an explanatory diagram of the operation of the connection mechanism at the time of winding the screen.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an appearance of a roll screen device 1 according to an embodiment of the present invention as viewed from the indoor side.

  As illustrated, the roll screen device 1 according to the present embodiment operates the bead cord 36 including the screen 10, the winding pipe 30, the support portion 35, the connection mechanism 40, and the like to operate the screen 10. It is a device to take in and out.

  The portion of the roll screen device 1 excluding the screen 10 and the connection mechanism 40 is essentially the same as the existing hand drive type roll screen device. Therefore, hereinafter, the configuration of the roll screen device 1 will be described focusing on the configuration of the screen 10 and the connection mechanism 40.

  As schematically shown in FIG. 2, the screen 10 is a member in which a solar cell module 20 in which two solar cell modules 20 a and 20 b are connected in parallel is disposed on a screen substrate 25.

  The screen 10 only needs to be a member having a certain degree of flexibility in which the solar cell module is disposed on the screen base material 25. In this specification, a solar cell module is a unit in which a plurality of solar cells are connected in series / series-parallel so that output can be taken out from a pair of output terminals. Therefore, as shown in FIG. 3, as the screen 10, the screen base 25, the solar cell module 20 (a plurality of solar cells 11 in each figure), the weather-resistant protective film 12, the sealing material 13a, and the sealing material 13b. , A back sheet 14, a sealing material 15, and a screen base material 25 can be used. Further, as shown in FIG. 4, a screen 10 further provided with an ultraviolet cut film 16 can be used.

  As shown in FIG. 1, the upper end of the screen 10 is connected to the take-up pipe 30 so as to be able to take up and unwind from the take-up pipe 30. Further, a bottom bar 38 for flattening the screen 10 by applying an appropriate tension to the screen 10 is attached to the lower end of the screen 10.

  It is preferable that the weight of the bottom bar 38 can be adjusted so that the tension of the screen 10 can be adjusted. The method for adjusting the weight is not particularly limited. For example, the weight of the bottom bar 38 itself is changed, or a part for storing the weight is provided in the bottom bar 38, and the weight of the weight storage part is adjusted. Is mentioned.

  The winding pipe 30 is a pipe-shaped member for winding the screen 10. The outer diameter of the winding pipe 30 is (1) the length of the screen 10, and (2) if the outer diameter of the winding pipe 30 is too small, the screen 10 is likely to be damaged when the screen 10 is wound. 3) When the outer diameter of the winding pipe 30 is too large, the weight and volume of the winding pipe 30 are increased, so that workability is deteriorated. For example, when the length of the screen 10 is about 2 m, the roll screen device 1 is obtained in which the screen 10 is hardly damaged and the workability is good if the winding pipe 30 having an outer diameter of about 60 mm to 80 mm is used. Can do. In addition, although the constituent material of the winding pipe 30 may be anything, lightweight aluminum is suitable.

  The support part 35 is a member configured to rotatably support the take-up pipe 30 configured by combining a plurality of members. When the roll screen device 1 is attached to the window, the support portion 35 is fixed inside or outside the window frame, directly or via another member.

Next, the structure of the connection mechanism 40 is demonstrated using FIG. 5 thru | or FIG. In the following description, “up”, “down”, “left”, “right”, “front”, and “back” refer to “up”, “down”, “left”, “right”, “front”, and “back” in FIG.

  As shown in FIG. 5, the connection mechanism 40 is provided on the side surface of the right end portion of the take-up pipe 30 and extends around the rotary shaft 41 extending in the length direction of the take-up pipe 30. And a main output terminal portion 45 fixed to the support portion 35.

  As shown in FIG. 6, a pair of positive and negative output electrodes 46 and a permanent magnet 52 are attached to the front side of the main output terminal portion 45.

  As shown in FIG. 7, a pair of positive and negative main output terminals 47 connected to the corresponding output side electrodes 46 and electric wires 55 are attached to the rear surface side of the main output terminal portions 45, respectively. Yes. FIG. 7 is a right side view of the roll screen device 1 when it is assumed that there is no member on the right end side of the support portion 35. Further, FIG. 7 also shows a boundary that cannot be seen even if it is assumed that there is no member on the right end side of the support portion 35 for the main output terminal portion 45 by a solid line.

  The movable part 42 (FIG. 5) is a member to which a pair of input-side electrodes 43 that are electrically connected to the output terminals with the corresponding polarities of the solar cell module 20 are attached. In addition, the connection between each input side electrode 43 of this movable part 42 and the output terminal of the solar cell module 20 is performed via the terminal box 39 fixed on the winding pipe 30.

  The shape of the movable part 42 and the attachment position of each input-side electrode 43 of the movable part 42 correspond to each input-side electrode 43 by rotating the movable part 42 about the rotation shaft 41 with all the screens 10 pulled out. It is determined so that the output side electrode 46 having the polarity can be brought into contact (see FIG. 7). In other words, the position of each output-side electrode 46 of the connection mechanism 40 corresponds to each input-side electrode 43 of the movable portion 42 by rotating the movable portion 42 about the rotation shaft 41 located at a predetermined position. It is determined so that the output side electrode 46 having the polarity can be brought into contact.

  A ferromagnetic member 51 is attached to a portion of the movable portion 42 that faces the magnet 52 attached to the main output terminal portion 45 when the input side electrode 43 and the output side electrode 46 come into contact with each other. In addition, a spacer 48 is attached to the movable portion 42 to limit the rotatable range of the movable portion 42 to the range shown in FIG.

Further, a posture regulating member 49 that is a plate-like member (in this embodiment, a relatively thin metal plate) is attached to the movable portion 42 so as to protrude toward the center of the roll screen device 1. The length of the posture regulating member 49 (the amount of protrusion toward the center of the roll screen device 1) is
When winding the screen 10 by the winding pipe 30, the end portion of the attitude regulating member 49 is determined to be sandwiched between the screen 10 wound around the winding pipe 30 and the winding pipe 30. It has been.

  In short, as shown in FIGS. 9A to 9E, when the screen 10 is pulled out, the connection mechanism 40 is configured so that the movable portion 42 rises as the winding pipe 30 rotates, and as a result, the movable portion 42 Each input side electrode 43 provided on the front end side of 42 has a configuration in contact with each output side electrode 46.

  However, in order to obtain the roll screen apparatus 1 that can be actually used, the operation of the movable portion 42 needs to be performed only when the last portion of the screen 10 is pulled out. A member provided for this purpose is the attitude regulating member 49.

  Specifically, the connection mechanism 40 has a configuration in which each input side electrode 43 of the movable portion 42 and each output side electrode 46 of the main output terminal portion 45 come into contact with each other when the screen 10 is completely pulled out (FIG. 7). Have. Further, the connection mechanism 40 is completely pulled out by applying a certain amount of force (force for peeling the ferromagnetic member 51 from the permanent magnet 52 + force for starting the rotation of the take-up pipe 30). When the winding of the screen 10 is started, each input side electrode 43 of the movable portion 42 is separated from each output side electrode 46 of the main output terminal portion 45. Here, the fact that the screen 10 is completely drawn out means that 70% or more of the area of the solar cell module 20 is drawn out. Preferably, it is 80% or more, more preferably 90% or more.

  As shown in FIGS. 10 (A) and 10 (B), the movable portion 42 separated from the main output terminal portion 45 is disposed on the winding pipe 30 until the winding pipe 30 rotates about 180 degrees. It is almost upright with respect to the side. Thereafter, as shown in FIG. 10C, the movable portion 42 starts to be inclined due to gravity, so that the posture regulating member 49 approaches the surface of the winding pipe 30. And the front-end | tip part of the attitude | position control member 49 is located between the part and the winding pipe 30 of the screen 10 wound up by the winding pipe 30 from now on. Therefore, the winding length of the screen 10 to the winding pipe 30 is the state shown in FIG. 10D (the tip portion of the attitude regulating member 49 is wound by the screen 10 wound on the winding pipe 30. In a case where the length is equal to or longer than the minimum length to be formed, the movable portion 42 does not stand up regardless of which direction the winding pipe 30 is rotated.

  Therefore, the connecting mechanism 40 rises only when the last portion of the screen 10 is pulled out, and the connection mechanism 40 establishes a connection between the input side electrode 43 and the output side electrode 46 (between the output terminal and the main output terminal 47 of the solar cell module 20). It becomes a mechanism to connect. If the output of the solar cell module 20 appears at the main output terminal 47 only when the screen 10 is in the fully open state, the above problem does not occur. Therefore, it can be said that the roll screen apparatus 1 according to the present embodiment is an apparatus that can be easily used as a generator.

  In the roll screen device 1 of the present invention, it is preferable from the viewpoint of power generation efficiency to increase the installation area of the solar cell module as much as possible. A method for increasing the installation area of the solar cell module as much as possible is not particularly limited, but a method for installing the solar cell module as large as possible with respect to the screen 10 or the roll screen device 1 from the end of the screen 10 is possible. A method of shortening the length of the end portion is mentioned. In order to shorten the length of the end portion of the roll screen device 1 from the end portion of the screen 10, a method of reducing the connection mechanism 40 can be mentioned. The length from the end of the screen 10 to the end of the roll screen device 1 is preferably 80 mm or less, more preferably 60 mm or less, more preferably 40 mm or less, and particularly preferably 30 mm or less. By shortening the length of the end portion of the roll screen device 1 from the end portion of the screen 10, not only securing the power generation area, but also when a plurality of roll screen devices 1 are installed, the interval between the roll screen devices can be reduced. And can improve the light shielding property.

  Finally, an example of materials that can be used for manufacturing the screen 10 and an example of a method for manufacturing the screen 10 will be described.

[Solar cell 11]
The solar battery cell 11 only needs to have a certain degree of flexibility (it is difficult to break even when bending stress is repeatedly applied). Therefore, as the solar battery cell 11, an amorphous silicon solar battery cell, an organic solar battery cell, a compound semiconductor solar battery cell, or the like can be used.

  Amorphous silicon solar cells have the advantage that they can sufficiently absorb sunlight even with a thin film having a thickness of about 1 μm. Amorphous silicon is an amorphous material with high resistance to bending. Therefore, if an amorphous silicon solar battery cell is employed as the solar battery cell 11, the thin and light screen 10 is less likely to cause destruction / performance deterioration of the solar battery cell 11 due to winding on the winding pipe 30. Can be realized.

Moreover, an organic solar cell can also be used as the solar cell 11. Here, the organic solar battery cell is a solar battery cell in which an organic semiconductor is used for the light absorption layer (photoelectric conversion layer). In addition, as an organic semiconductor which can be used as a constituent element of an organic solar battery cell, for example, naphthalene (or perylene) tetracarboxylic acid diimide, fullerene (C ₆₀ ) and derivatives thereof are known. In addition, for example, conjugated polymers such as polythiophene, polyfluorene, polythienylene vinylene, polyacetylene, polyaniline; and polymer semiconductors such as alkyl-substituted oligothiophene are also known.

Moreover, a compound semiconductor solar cell can also be used as the solar cell 11. Among compound semiconductor solar cells, I-III-VI group ₂ semiconductor (chalcopyrite) solar cells capable of obtaining high photoelectric conversion efficiency are preferable, and Cu-III- using Cu as the group I element is particularly preferable. VI Group ₂ semiconductor solar cells are preferred. Here, the Cu-III-VI group ₂ semiconductor solar cell is a solar cell having a Cu-III-VI group ₂ semiconductor as a constituent material. The Cu-III-VI group ₂ semiconductor is a semiconductor made of a compound containing Cu, a group III element, and a group VI element in a ratio of 1: 1: 2. Examples of the Cu-III-VI ₂ group semiconductor include CuInSe ₂ , CuGaSe ₂ , Cu (In _1-x Ga _x ) Se ₂ , CuInS ₂ , CuGaS ₂ , Cu (In _1-x Ga _x ) S ₂ , CuInTe _2. CuGaTe ₂ and Cu (In _1-x Ga _x ) Te ₂ .

The constituent material of the compound semiconductor solar cell used as the solar cell 11 may be a mixture of two or more of these. In addition, as a compound semiconductor solar cell, a CIS solar cell and a CIGS solar cell are particularly preferable. Here, the CIS solar cell is a solar cell having a CIS semiconductor as a constituent material, and the CIS semiconductor is CuIn (Se _1-y S _y ) ₂ [0 ≦ y ≦ 1]. That is. That is, CIS
The system semiconductor is CuInSe ₂ , CuInS ₂ , or those in a mixed state.

In addition, the CIGS-based solar cells is that of the solar cell having a CIGS semiconductor as a constituent material, a CIGS-based _{semiconductor, Cu (In 1-x Ga} x) (Se 1-y S y) 2 [
0 <x <1, 0 ≦ y ≦ 1]. In addition, Cu (In _1-x Ga _x ) Se ₂ is usually
It is a mixed crystal of CuInSe ₂ and CuGaSe ₂ . Also, the range of x is usually greater than 0, preferably greater than 0.05, more preferably greater than 0.1, and usually less than 0.8, preferably less than 0.5, more preferably 0. Less than 4.

[Weather-resistant protective film 12]
The weather-resistant protective film 12 is a film for protecting the solar battery cell 11 from weather changes. Some constituent elements of the solar battery cell 11 are deteriorated due to temperature change, humidity change, natural light, erosion caused by wind and rain, and the like. Therefore, it is desirable to prevent the power generation capacity from deteriorating by covering the solar cells 11 with the weather-resistant protective film 12 to protect the solar cells 11 from weather changes.

Since the weather-resistant protective film 12 is located on the outermost layer of the screen 10, the surface covering material of the screen 10 (solar cell 11) such as weather resistance, heat resistance, transparency, water repellency, stain resistance, mechanical strength, etc. It is preferable to have a property suitable for the above and to maintain it for a long period of time in outdoor exposure.

  The screen 10 is preferably one that can be compactly wound. Therefore, the weather-resistant protective film 12 is preferably thin. Usually, it is 10 μm or more, preferably 15 μm or more, more preferably 20 μm or more, and is usually 200 μm or less, preferably 180 μm or less, more preferably 150 μm or less, and further preferably 100 μm or less. When the weather-resistant protective film 12 is thinned, the flexibility is increased, so that the film can be easily wound. However, it is not preferable that the weather-resistant protective film 12 is too thin. This is because if the weather-resistant protective film 12 is too thin, the weather resistance cannot be ensured.

  Moreover, from the viewpoint that the weather-resistant protective film 12 does not hinder the light absorption of the solar battery cell 11, a film that transmits visible light is preferable. For example, the visible light (wavelength 360 to 830 nm) light transmittance of the weather-resistant protective film 12 is preferably 80% or more, more preferably 90% or more, and particularly preferably 95%.

  Furthermore, since the screen 10 is often heated by receiving light, the weather-resistant protective film 12 preferably has heat resistance. From this viewpoint, the melting point of the constituent material of the weather-resistant protective film 12 is usually 100 ° C. or higher, preferably 120 ° C. or higher, more preferably 130 ° C. or higher, and usually 350 ° C. or lower, preferably 320 ° C. or lower. Preferably it is 300 degrees C or less. By increasing the melting point, it is possible to reduce the possibility that the weather-resistant protective film 12 is melted and deteriorated when the screen 10 is used.

  The material which comprises the weather-resistant protective film 12 is arbitrary if it can protect the photovoltaic cell 11 from a weather change.

In addition, the weather-resistant layer is provided with functions such as ultraviolet ray blocking, heat ray blocking, antifouling property, antifogging property, abrasion resistance, conductivity, antireflection, antiglare property, light diffusion, light scattering, wavelength conversion property, etc. May be. In particular, since the screen 10 is exposed to strong ultraviolet rays from sunlight, the weather resistant layer may have an ultraviolet blocking function. The UV blocking function can be achieved by laminating a layer having an UV blocking function on the weather resistant layer by coating film formation, etc., or by dissolving and dispersing a material that exhibits the UV blocking function. Can be applied to the weathering layer.

  In addition, the weather-resistant protective film 12 may be formed with 1 type of material, and may be formed with 2 or more types of materials. Moreover, although the weather-resistant protective film 12 may be formed with the single layer film, the laminated | multilayer film provided with the film of two or more layers may be sufficient as it.

  Further, the weatherproof protective film 12 may be subjected to surface treatment such as corona treatment or plasma treatment in order to improve adhesion with other films.

  The weatherproof protective film 12 is preferably provided on the outer side of the screen 10 as much as possible. This is because more components of the screen 10 can be protected. Therefore, it is preferable to provide the weather-resistant protective film 12 on the outermost surface of the screen 10.

  Furthermore, in order to eliminate the possibility that the surface of the screen base material 25 where the solar battery cells 11 are not provided (inside the room) and the surface side of the weather-resistant protective film 12 are bonded in the wound state. You may emboss the surface of the weather-resistant protective film 12. The embossing of the surface of the screen 10 is also effective for making the screen 10 not dazzling when viewed from the outside.

[Encapsulant 13a]
The sealing material 13 a is a film that reinforces the solar battery cell 11. Since the solar cells 11 are thin, the strength is usually weak, and thus the strength of the screen 10 tends to be weak. However, the strength can be kept high by the sealing material 13a.

  In order to allow the screen 10 to be wound compactly, the sealing material 13a is preferably thin. Usually, it is 50 μm or more, preferably 100 μm or more, more preferably 150 μm or more, and usually 500 μm or less, preferably 450 μm or less, more preferably 400 μm or less. Thinning increases flexibility and makes winding easier. However, if it is too thin, strength is not ensured, which is not preferable.

  Further, the sealing material 13a preferably has high strength from the viewpoint of maintaining the strength of the screen 10. The specific strength is related to the strength of the weatherproof protective film 12 other than the sealing material 13a and the strength of the back sheet 14, and is difficult to define unconditionally. It is desirable to have adhesiveness and strength so that peeling or deformation does not occur in each part of the screen 10 even if it is wound or stretched around 30.

  In addition, the sealing material 13a is preferably one that transmits visible light from the viewpoint of not preventing the solar cell 11 from absorbing light. For example, the transmittance of visible light (wavelength 360 to 830 nm) of the sealing material 13a is usually 60% or more, preferably 70% or more, more preferably 75% or more, still more preferably 80% or more, and particularly preferably. It is 85% or more, particularly preferably 90% or more, particularly preferably 95% or more, and particularly preferably 97% or more. This is to convert more sunlight into electrical energy.

  Furthermore, since the screen 10 is often heated by receiving light, it is preferable that the sealing material 13a also has heat resistance. From this viewpoint, the melting point of the constituent material of the sealing material 13a is usually 100 ° C. or higher, preferably 120 ° C. or higher, more preferably 130 ° C. or higher, and usually 350 ° C. or lower, preferably 320 ° C. or lower, more preferably. Is 300 ° C. or lower. By increasing the melting point, the possibility that the sealing material 13a is melted and deteriorated when the roll screen device 1 is used can be reduced.

[Encapsulant 13b]
The sealing material 13b is a film similar to the sealing material 13a described above, and the same material as the sealing material 13a can be used in the same manner except that the arrangement position is different. The thickness is the same as that of the sealing material 13a. Moreover, since the constituent member on the back side of the solar battery cell 11 does not necessarily need to transmit visible light, the sealing material 13b may be one that does not transmit visible light.

[Backsheet 14]
The back sheet 14 is preferably thin so that the screen 10 can be compactly wound. It is usually 10 μm or more, preferably 15 μm or more, more preferably 20 μm or more, and is usually 200 μm or less, preferably 180 μm or less, more preferably 150 μm or less. Thinning tends to increase flexibility and facilitates winding, but too thin is not preferable because weather resistance is not ensured.

The back sheet 14 is the same film as the weather-resistant protective film 12 described above, and the same film as the weather-resistant protective film 12 can be used in the same manner except that the arrangement position is different. Moreover, since the constituent member on the back side of the solar battery cell 11 does not necessarily need to transmit visible light, a member that does not transmit visible light can be used. For this reason, as the back sheet | seat 14, what is demonstrated below can also be used.

  For example, polyethylene resin, polypropylene resin, cyclic polyolefin resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyvinyl chloride resin, fluorine Resins, poly (meth) acrylic resins, polycarbonate resins, polyester resins such as polyethylene terephthalate or polyethylene naphthalate, polyamide resins such as various nylons, polyimide resins, polyamideimide resins, polyarylphthalate resins Sheet of various resins such as silicone resin, polysulfone resin, polyphenylene sulfide resin, polyethersulfone resin, polyurethane resin, acetal resin, cellulose resin, etc. It is possible to use.

Among these resin sheets, it is preferable to use a fluorine resin, a cyclic polyolefin resin, a polycarbonate resin, a poly (meth) acrylic resin, a polyamide resin, or a polyester resin sheet. Specific examples of the fluorine resin include polytetrafluoroethylene (PTFE), 4-fluorinated ethylene-perchloroalkoxy copolymer (PFA), 4-fluorinated ethylene-6-fluorinated propylene copolymer (FEP). , 2-ethylene-4-fluoroethylene copolymer (ETFE), poly-3-fluoroethylene chloride (PCTFE), polyvinylidene fluoride (PVDF), and polyvinyl fluoride (PVF). In addition, these may use 1 type and may use 2 or more types together by arbitrary combinations and a ratio.

[Sealant 15]
In order to seal the edges of the weatherproof protective film 12, the sealing materials 13a and 13b, and the back sheet 14 described above, the sealing material 15 may be used. Since the screen 10 is often heated by receiving light, it is preferable that the sealing material 15 also has heat resistance. From this viewpoint, the melting point of the constituent material of the sealing material 15 is usually 100 ° C. or higher, preferably 120 ° C. or higher, more preferably 130 ° C. or higher, and usually 250 ° C. or lower, preferably 200 ° C. or lower, more preferably. 180 ° C. or lower. If the melting point is too low, the sealing material 15 may melt when the solar cell module 20 is used.

  Examples of the material constituting the sealing material 15 include polymers such as a fluorine resin, a silicone resin, and an acrylic resin. Note that the sealing material 15 may be formed of one kind of material or two or more kinds of materials.

  The sealing material 15 is provided at a position where each film other than the weather-resistant protective film 12 and the back sheet 14 of the screen 10 can be sealed. Thereby, the space surrounded by the sealing material 15 can be sealed, and moisture and oxygen can be prevented from entering the space.

  The sealing material 15 can be formed by various methods. For example, it can be formed by injecting the constituent material of the sealing material 15 between the weather-resistant protective film 12 and the back sheet 14.

[Screen base material 25]
In order to be able to wind up the screen 10 in a compact manner, the screen substrate 25 is preferably thin. Usually, it is 0.1 mm or more, preferably 0.15 mm or more, more preferably 0.2 mm or more, and usually 2 mm or less, preferably 1.5 mm or less, more preferably 1 mm or less. Thinning tends to increase flexibility and facilitates winding, but too thin is not preferable because strength is not ensured.

  The material of the screen base material 25 may be a natural material such as Japanese paper, cotton or hemp, in addition to those made from a resin such as polypropylene or polyester. A polyester / cotton blend may also be used. The screen base material 25 may have a high light-shielding property or may have a low light-shielding property (so-called transparent). Further, the screen substrate 25 may have a heat shielding property.

  The screen substrate 25 may have any number of colors, and white, beige, brown, blue, green, and the like are preferably used from the viewpoint of design. Moreover, in order to improve designability, you may give a desired pattern especially indoor side. Furthermore, in order to eliminate the possibility that the surface of the screen base material 25 on which the solar battery cells 11 are not provided (inside the room) and the surface side of the weather-resistant protective film 12 are adhered in the wound state. The surface of the screen base 25 on the indoor side can be embossed.

[UV cut film 16]
The ultraviolet cut film 16 is a film that prevents transmission of ultraviolet rays. Since some components of the screen 10 are deteriorated by ultraviolet rays, the ultraviolet cut film 16 may be used.

  Since the screen 10 is desired to be compact in the wound state, the ultraviolet cut film 16 is preferably thin. Usually, it is 5 μm or more, preferably 10 μm or more, more preferably 15 μm or more, and is usually 200 μm or less, preferably 180 μm or less, more preferably 150 μm or less. Increasing the thickness tends to increase the absorption of ultraviolet rays, but if it is too thick, compactness cannot be secured.

  The degree of the ability to suppress the transmission of ultraviolet rays required for the ultraviolet cut film 16 is such that the transmittance of ultraviolet rays (for example, wavelength 300 nm) is preferably 50% or less, more preferably 30% or less, and particularly preferably. 10% or less.

  Moreover, the ultraviolet cut film 16 is preferably one that transmits visible light from the viewpoint of not preventing the light absorption of the solar battery cell 11. For example, the transmittance of visible light (wavelength 360 to 830 nm) is preferably 80% or more, more preferably 90% or more, and particularly preferably 95%.

  Furthermore, since the screen 10 is often heated by receiving light, the ultraviolet cut film 16 preferably has heat resistance. From this viewpoint, the melting point of the constituent material of the ultraviolet cut film 16 is usually 100 ° C. or higher, preferably 120 ° C. or higher, more preferably 130 ° C. or higher, and usually 350 ° C. or lower, preferably 320 ° C. or lower, more preferably. Is 300 ° C. or lower. If the melting point is too low, the ultraviolet cut film 16 may melt when the solar cell module 20 is used.

  Moreover, the ultraviolet-ray cut film 16 has a high softness | flexibility, its adhesiveness with an adjacent film is favorable, and what can cut water vapor | steam and oxygen is preferable.

  The material constituting the ultraviolet cut film 16 is arbitrary as long as it can weaken the intensity of ultraviolet rays. Examples of the material include films formed by blending an ultraviolet absorber with an epoxy, acrylic, urethane, or ester resin.

As the ultraviolet absorber, for example, a salicylic acid-based, benzophenone-based, benzotriazole-based, or cyanoacrylate-based one can be used. Of these, benzophenone and benzotriazole are preferable. Examples of this include various aromatic organic compounds such as benzophenone and benzotriazole. The ultraviolet absorber may be formed of one kind of compound or may be formed of two or more kinds of compounds. Moreover, you may use the film which formed the layer which disperse | distributed or melt | dissolved the ultraviolet absorber in resin on the base film. Or the film which formed the ultraviolet absorption layer on the base film can also be used. Such a film can be produced, for example, by applying a coating solution containing an ultraviolet absorber on a substrate film and drying it.

  Although the material of a base film is not specifically limited, For example, polyester is mentioned at the point from which the balance of heat resistance and a softness | flexibility is obtained.

  The ultraviolet cut film 16 may be formed of a single layer film, but may be a laminated film composed of two or more layers.

[Method for Manufacturing Screen 10]
Portions other than the screen substrate 25 of the screen 10 (hereinafter referred to as a solar cell portion) can be manufactured by various methods. For example, the solar cell unit of the type shown in FIG. 3 is obtained by connecting a plurality of solar cells 11 in series or in parallel between the weather-resistant protective film 12 and the back sheet 14 together with the sealing materials 13a and 13b. It can manufacture by laminating with a general vacuum laminating apparatus. Also, the solar cell portion of the type shown in FIG. 4 can be manufactured by simultaneously laminating the ultraviolet cut film 16 or laminating several films at the time of laminating as described above.

  At this time, the heating temperature is usually 130 ° C. or higher, preferably 140 ° C. or higher, and is usually 180 ° C. or lower, preferably 170 ° C. or lower. The heating time is usually 10 minutes or longer, preferably 20 minutes or longer, usually 100 minutes or shorter, preferably 90 minutes or shorter. The pressure is usually 0.001 MPa or more, preferably 0.01 MPa or more, and usually 0.2 MPa or less, preferably 0.1 MPa or less. By making the pressure within this range, sealing can be performed reliably, and the sealing materials 13a and 13b from the end portions can be prevented from protruding and film thickness reduction due to over-pressurization, thereby ensuring dimensional stability.

  Examples of the fixing method between the screen base material 25 and the solar cell unit include a method using an adhesive and a sewing method.

  In order to eliminate the possibility that the surface of the screen substrate 25 on the side where the thin-film solar cell is not mounted (inside the room) and the surface side of the weather-resistant protective film 12 in the wound state are eliminated. You may emboss the surface of the indoor side.

<Deformation>
The above-described roll screen device 1 can perform various modifications. For example, instead of the connection mechanism 40, a mechanism (circuit) having the same function including a slip ring, a rotary encoder, and the like can be mounted on the roll screen device 1. Further, instead of the connection mechanism 40, a mechanism having the same function including a rotary switch, a slip ring, and the like that rotate almost once when the entire screen 10 is pulled out can be mounted on the roll screen device 1.

  However, such a mechanism is more costly to manufacture than the connection mechanism 40 described above. Therefore, from the viewpoint of manufacturing the roll screen device 1 at low cost, it is desirable to employ the connection mechanism 40 described above.

In addition, the permanent magnet 52 and the ferromagnetic member 51 can be removed from the connection mechanism 40. However, when the permanent magnet 52 and the ferromagnetic member 51 are removed, the electrical contact state between the input side electrode 43 and the output side electrode 46 may be deteriorated. Therefore, the permanent magnet 52
It is preferable to employ the connection mechanism 40 including the ferromagnetic member 51.

DESCRIPTION OF SYMBOLS 1 Roll screen apparatus 10 Screen 11 Solar cell 12 Weatherproof protective film 13a, 13b Sealing material 14 Back sheet 15 Sealing material 16 Ultraviolet cut film 20, 20a, 20b Solar cell module 25 Screen base material 30 Winding pipe 35 Support part 36 Bead code 38 Bottom bar 39 Terminal box 40 Connection mechanism 41 Rotating shaft 42 Movable part 43 Input side electrode 45 Main output terminal part 46 Output side electrode 47 Main output terminal 48 Spacer 49 Posture regulating member 51 Ferromagnetic member 52 Permanent magnet

Claims (3)

A winding pipe;
A support member for rotatably supporting the winding pipe;
A pair of positive and negative main output terminals fixed to the support member;
A screen having a solar cell module disposed on one surface, one end of which is connected to the take-up pipe so that the take-up pipe can be taken up and unwound from the take-up pipe. A screen,
When the state of the screen is in a fully open state in which all portions where the solar cell module is disposed are drawn out from the winding pipe, each of the pair of main output terminals and the solar cell module A connection means for electrically connecting an output terminal of a corresponding polarity, and disconnecting an electrical connection between at least one of the main output terminal and the output terminal when the state of the screen is not the fully open state;
A roll screen device comprising: As the connection means,
A rotating shaft provided on a side surface of one end of the winding pipe and extending in the length direction of the winding pipe;
A first member attached with a pair of positive and negative input side electrodes, each of which is rotatable about the rotation axis and electrically connected to the output terminals of the corresponding polarity of the solar cell module;
When the first member is rotated about the rotation shaft located at a predetermined position, which is electrically connected to the main output terminal of the corresponding polarity, the input side electrode of the corresponding polarity of the first member A pair of positive and negative output-side electrodes disposed at a position that will come into contact with,
The winding pipe extends from the first member toward the other end side of the winding pipe, and is sandwiched between the winding pipe and the screen wound on the winding pipe. A posture regulating member that regulates the posture of the first member when the screen of a predetermined amount or more is wound on the posture to the posture in which the pair of input-side electrodes are located near the side surface of the winding pipe;
The pair of input-side electrodes and the pair of the first member when the rotation shaft is located at the predetermined position in a state where the posture control member is not sandwiched between the screen and the winding pipe. An attitude control member for taking an attitude in contact with the output side electrode of
The roll screen device according to claim 1, comprising: A magnet is attached to one member of the second member holding the pair of output-side electrodes and the first member, and a ferromagnetic member is attached to a portion of the other member that faces the magnet. The roll screen device according to claim 2, wherein the roll screen device is provided.

Images