JP5516115B2 - Portable solar power generator - Google Patents

Description

  The present invention relates to a portable solar power generation apparatus that is excellent in portability and that is suitably used in the outdoors or where there is no power source.

  Conventionally, as this type of portable solar power generation device, a flexible solar power generation sheet and a roller for winding the solar power generation sheet are incorporated, and the solar power generation sheet is wound around the roller and pulled out. Various devices including a box-shaped storage case that can be stored have been proposed (see, for example, Patent Documents 1 to 3). Such a solar power generation sheet is very lightweight and has an advantage that it can be stored compactly. However, since a winding roller for protecting the sheet, a box-shaped storage case, and a roller rotating mechanism are required, there are certain limitations on cost reduction, weight reduction, and compactness. On the other hand, the thing of patent document 4 is also proposed as a thing which abbreviate | omitted the winding roller and the roller rotation mechanism. However, in this case as well, a separate storage case is required, and it is not easy to use because it is necessary to manage the storage case separately.

Japanese Patent Laid-Open No. 01-110777 JP 2006-86203 A JP 2009-302457 A JP 2004-88043 A

  Therefore, in view of the situation described above, the present invention intends to solve the problem of further cost reduction, weight reduction, and compactness by a simple structure in which the take-up roller is omitted. The point is to provide a portable solar power generation device that can be deployed.

In order to solve the above-described problems, the present invention is provided with a flexible photovoltaic power generation sheet that can be wound in a cylindrical shape along the longitudinal direction, and is connected to one end side in the longitudinal direction of the photovoltaic power generation sheet. A flexible cover sheet that is wound on the outer peripheral surface of the photovoltaic sheet wound in a cylindrical shape from the other end side and accommodates the photovoltaic sheet in the cylindrical state therein; Ri more Na, wherein the cover sheet has a greater width dimension than the width of the photovoltaic sheet, and outward from the right and left side end edges of the right and left side edges each said photovoltaic sheet of the cover sheet provided continuously so as to be positioned, characterized Rukoto a provided fastening means fastened to wrap the left and right end portions of the photovoltaic sheet wound into a cylindrical shape by squeezing the side end edge of the cover sheet A portable solar power generator was constructed (claims) ).

Here, the tightening means includes a string that passes through the side edge of the cover sheet and a holder that holds the sheet side edge in a state of being squeezed along the string. Those are preferred (Claim 2 ).

Further, the fastening means engages both ends with the solar power generation sheet side end of each side edge of the cover sheet, and the intermediate part is passed through the sheet along each side edge. It is attached to one string extending outward from the end opposite to the photovoltaic power generation sheet, and the portion extending to the outside of the string, and each sheet side edge is held in a squeezed state. more that is a pair of holders which are preferably (claim 3).

Further, the cord constituting the fastening means, preferably made through the threading is inserted into the front and back alternately to the plurality of through-holes formed along each side edge of said cover sheet (claim 4) .

  According to the portable solar power generation device according to claim 1, the solar power generation sheet is wound on the outer peripheral surface of the solar power generation sheet that is continuously provided on one end side in the longitudinal direction of the solar power generation sheet and wound in a cylindrical shape from the other end side. The solar power generation sheet is housed in the cylindrical state inside the same flexible cover sheet so that the cover sheet functions as a protective cover for protecting the solar power generation sheet. There is no need to prepare a box-type storage case or a separate storage case, which can realize further cost reduction, weight reduction, and compactness, and when storing, wind up a solar power generation sheet and cover it as it is The solar power generation sheet can be covered simply by wrapping the sheet. In addition, when using the cover sheet, the cover sheet can be expanded and the solar power generation sheet can be expanded as it is. Can be used as received with, it can provide a portable solar power generation device very good usability.

Further , the cover sheet has a width dimension larger than the width dimension of the photovoltaic power generation sheet, and the left and right side edges of the cover sheet are respectively positioned outside the right and left side edge of the photovoltaic power generation sheet. Provided with tightening means for tightening so as to wrap the left and right ends of the photovoltaic sheet wound in a cylindrical shape by narrowing each side edge of the cover sheet, so that the photovoltaic sheet wound in a cylindrical shape The left and right end portions of the cover can be stored and held in a stable posture without being displaced in the lateral direction and can be protected by the presence of the cover sheet.

According to the portable solar power generation apparatus according to claim 2 , the tightening means squeezes the string that is passed through the sheet along each side edge of the cover sheet, and the sheet side edge along the string. Because it is composed of a holder that holds it in a state, it can realize a low-cost and lightweight tightening means, it is easy to operate, and it can be used on the shoulder when carrying the rest of the squeezed string, and the string can be used outdoors It can be used as a hanging string on a tree.

According to the portable solar power generation device according to claim 3 , the fastening means engages both end portions with the end portions on the solar power generation sheet side of the respective side edges of the cover sheet, and the intermediate portion on each side. A single string that passes through the sheet along the edge and extends to the outside from the end opposite to the photovoltaic sheet, and is attached to the portion of the string that extends to the outside. Because it consists of a pair of holders that hold each sheet side edge in a squeezed state, the remaining part of the squeezed string is long, making it easier to use as a string to hang on the shoulder when carrying it and It can be used as a hanging string on a tree.

According to the portable solar power generation apparatus of the fourth aspect , the string constituting the tightening means is inserted into the plurality of through holes formed along the side edges of the cover sheet and alternately sewn. Thus, the fastening means can be configured with a simple structure without incurring costs.

The top view which shows the state (state at the time of use) which expand | deployed the portable solar power generation device which concerns on typical embodiment of this invention. The perspective view which shows the state which similarly accommodated the portable solar power generation device. Explanatory drawing for demonstrating the procedure which similarly accommodates a portable solar power generation device. Explanatory drawing of the principal part which shows a mode that the portable solar power generation device was similarly connected to the power supply device. Explanatory drawing which similarly shows the modification of the fastening means of a portable solar power generation device. Explanatory drawing which similarly shows the other modification of a fastening means.

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

  As shown in FIGS. 1 and 2, the portable solar power generation device 1 according to the present invention has a flexible solar power generation sheet 2 that can be wound in a cylindrical shape along the longitudinal direction, and the sunlight. The solar power generation sheet 2 is wound around on the outer peripheral surface of the solar power generation sheet 2 that is continuously provided on one end side in the longitudinal direction of the power generation sheet 2 and wound in a cylindrical shape from the other end side. And a cover sheet 3 having flexibility. Such a portable solar power generation device 1 can be widely used as a simple power generation device in the field or outside where there is no power supply, and does not require a separate storage container, and is light and easy to deploy / store. Can be used as a handy portable device that can.

  The solar power generation sheet 2 can be suitably used as a film-type amorphous solar cell 20, and is affixed to the upper surface of a base sheet made of synthetic resin or synthetic rubber having a slightly larger dimension than the solar cell 20. It may be used directly. In this example, the solar cell 20 having a base sheet made of a fluororesin is used as it is. The solar cell 20 has a structure having plus / minus output electrodes 23a and 23b on one end side that is the cover sheet 3 side and the other end side that is opposite to the cover sheet 3, and is directed from the electrode 23a on one end side toward the other end side. Then, a wiring 24 is attached to a portion where the solar battery cell does not exist along the edge of the solar power generation sheet 2 (solar battery 20).

  The wiring 24 may have a structure in which a copper foil tape is applied, but the copper foil may be disconnected due to repeated winding / unfolding of the photovoltaic power generation sheet 2, so in this example, a lead wire is attached as the wiring 24. Yes. The lead wire can be fixed with a tape, but the solar cell 20 is not suitable for a material having poor adhesion such as a fluorine resin as in this example. A plurality of through-holes that are slightly larger than the lead wires are formed at predetermined intervals along the edge, and the lead wires are alternately inserted into the front and back surfaces and attached so as to be sewn, thereby realizing a wiring structure without slack.

  The leading end 24a of the lead wire (wiring 24) is routed to the vicinity of the electrode 23b, and as shown in FIG. 4, the wiring 24 and the electrode 23b are connected to the base end of the output cable 25 having the output plug 25c. It is connected to the. Reference numeral 6 in the figure denotes a power supply device equipped with a DC-DC converter or a DC-AC inverter as required, and a portable type by connecting a plurality of output plugs 25c of the portable solar power generation device 1 to the input side. A plurality of solar power generation devices 1 are connected in parallel to increase the amount of power generation. Reference numeral 61 denotes a power supply cable for taking out the power supply connected to the output side of the power supply device 6, and can be connected to various devices to charge the devices. Of course, a storage battery may be built in the power supply device 6. Eyelets 26 are provided at the four corners of the photovoltaic power generation sheet 2 so as to be supported in an unfolded state by an outdoor tree or the like through a rope or the like.

  The cover sheet 3 has a width dimension larger than the width dimension of the photovoltaic power generation sheet 2, and the left and right side edges 31 a and 31 b of the cover sheet 3 are respectively greater than the left and right side edges 21 a and 21 b of the photovoltaic power generation sheet 2. Are also arranged so as to be located outside. Such width dimensions and positional relationships are for tightening the left and right ends 22a and 22b of the photovoltaic sheet wound in a cylindrical shape by narrowing the side edges 31a and 31b of the cover sheet 3. is there.

  As the material of the cover sheet 3, a front projection type projection screen material that does not transmit light is used. By adopting such a light-shielding sheet, it is possible to prevent the internal solar cell from generating power in the housed state, avoid electric shock, and improve safety. The present invention is not limited to such a screen fabric, and various materials such as fibers such as paper, leather, synthetic resin, rubber, and metal can be selected as the cover sheet 3. The cover sheet 3 and the photovoltaic power generation sheet 2 are detachably connected to each other by metal male and female circular hooks 52 and 53. Accordingly, when any sheet is damaged, only the damaged sheet can be replaced, and recycling and the like are facilitated. The hook may be shaped like a hook or made of a synthetic resin other than metal. Other fasteners may be used. Moreover, you may join so that attachment or detachment is impossible with an adhesive agent.

  As described above, the side edges 31a and 31b of the cover sheet are tightened so as to wrap around the left and right ends 22a and 22b of the photovoltaic sheet 2 wound in a cylindrical shape by narrowing the side edges 31a and 31b. Means 4 are provided. The tightening means 4 holds the string 40 passed through the sheet 3 along the side edges 31 a and 31 b of the cover sheet 3 and the sheet side edges 31 a and 31 b squeezed along the string 40. It is comprised from the holders 41 and 41. FIG.

  More specifically, both end portions are respectively engaged with the end portions 31c on the photovoltaic power generation sheet 2 side of the side edge portions 31a and 31b of the cover sheet 3, and the middle portion is along the side edge portions 31a and 31b. A single string 40 that is passed through the sheet 3 and extends to the outside from the end 31d on the opposite side of the photovoltaic sheet 2, and is attached to the portion of the string 40 that extends to the outside, Each of the sheet-side end edges 31a and 31b is composed of a pair of holders 41 and 41 that hold the sheet-side edges 31a and 31b in a narrowed state.

  The string 40 is passed through the plurality of through-holes 32 formed along the side edges 31a and 31b of the cover sheet 3 so as to be alternately inserted into the front and back, and both ends of the string 40 are connected to the ends. By tying and forming a knot portion 42 that is larger than the through hole 32, the both end portions are locked so as not to come out of the through hole 32 of the end portion 31 c of the cover sheet 3. Instead of providing such a knot portion 42, a cylindrical locking member larger than the through hole 32 may be attached to the both end portions by caulking or the like. Furthermore, both ends of the string 40 may be sewn or bonded to the end 31 c of the cover sheet 3. Further, in this example, the string 40 is alternately inserted into the through hole 32, but instead of providing such a through hole 32, the side edges 31a and 31b of the cover sheet 3 are folded and the tip is joined. Of course, it may be configured such that the string portion is formed and the string 40 is passed therethrough.

  The dimension of the cover sheet 3 along the longitudinal direction of the photovoltaic power generation sheet 2 has a dimension that is at least longer than the circumferential length of the outer peripheral surface of the photovoltaic power generation sheet 2 wound in a cylindrical shape. The photovoltaic sheet 2 can be completely encased, but is not necessarily limited thereto. In this example, on the inner surface of the end 33 of the cover sheet 3 opposite to the solar power generation sheet 2, the locking means 5 is locked to the outer surface of the cover sheet 3 wound on the outer peripheral surface of the solar power generation sheet 2. Is provided. In this example, the locking means 5 is provided with metal male and female circular hooks 50 and 51 which are engaged with each other on the inner surface and the outer surface of the end portion 33. However, the hook-shaped hook and its material are also made of resin. Other fasteners such as hooks may be used. Moreover, a hook-and-loop fastener may be sufficient.

  As shown in FIG. 3A, such a portable solar power generation device 1 winds the solar power generation sheet 2 from the end opposite to the cover sheet 3 with the solar cell side facing outward. After the cover sheet 3 is wound as it is, the cover sheet 3 is wound as it is, and then the circular hooks 50 and 51 of the locking means 5 are stopped to hold the cover sheet 3 in a cylindrical shape. Then, while pulling the string 40, the side edges 31a and 31b of the cylindrical cover sheet 3 are squeezed by the holders 41 and 41, respectively, and the both end portions 22a and 22b of the cylindrical solar power generation sheet 2 are wrapped. It can be set as the accommodation state shown to 3 (c). In this way, when the solar cell side is wound outward, the holder 41 is loosened to release the locking means 5, and when the cover sheet 3 and the solar power generation sheet 2 are deployed and used, the solar power generation sheet Even if a curl remains in 2, the curl becomes a curl with a convex solar cell side, so there is little possibility that the solar cell side will be shaded, and there is almost no effect on the reduction in power generation efficiency. Depending on the mode of use, for example, when the deployed photovoltaic sheet 2 is placed on the ground or the like with the solar cell side facing up, the convexly curved upper surface is straightened by the weight of the sheet Try to return.

  FIG. 5 shows a modification of the fastening means 4. In this modification, the side edges 31a and 31b are respectively passed through the cords 40 and 40 independent from each other, and the holder 40 is provided in each cord 40. The fastening means 4 is composed of a total of two cords 40. Is configured. The sheet-side edges 31a and 31b are tightened completely independently by the strings 40 and the holder 41, respectively, and the remaining portions of the strings 40 extend in loops from both ends in the squeezed state. It becomes a state.

  FIG. 6 shows another modification of the fastening means 4. In this example, a thin elastic member such as a rubber string is provided in a state of being extended along the sheet side edges 31a and 31b in place of the string, and both ends are engaged through the string as described above. It may be stopped or integrally sewn or pasted. As a result, the sheet-side end edges 31a and 31b are contracted and squeezed, and can be tightened so as to wrap around the left and right end portions 22a and 22b of the photovoltaic sheet wound in a cylindrical shape.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Portable solar power generation device 2 Solar power generation sheet 3 Cover sheet 4 Tightening means 5 Locking means 6 Power supply device 20 Solar cell 21a, 21b Side edge 22a, 22b End 23a Electrode 23b Electrode 24 Wiring 24a Front end 25 Output Cable 25c Output plug 26 Eyelet 31a, 31b Side edge 31c End 31d End 32 Through hole 33 End 40 String 41 Holder 42 Tie 50, 51 Circular hook 52, 53 Circular hook 61 Power cable

Claims (4)

A flexible photovoltaic sheet that can be wound in a cylindrical shape along the longitudinal direction;
The solar power generation sheet is continuously provided on one end side in the longitudinal direction of the solar power generation sheet and wound on the outer peripheral surface of the solar power generation sheet wound in a cylindrical shape from the other end side. A flexible cover sheet that is housed in
Ri more vegetables,
The cover sheet has a width dimension that is larger than the width dimension of the photovoltaic sheet, and the left and right side edges of the cover sheet are positioned outside the left and right side edges of the photovoltaic sheet, respectively. provided continuously, portable solar, characterized in Rukoto a provided fastening means fastened to wrap the left and right end portions of the photovoltaic sheet wound into a cylindrical shape by squeezing the side end edge of the cover sheet Power generation device. It said clamping means comprises a strap which is threaded through the seat along each side edge of said cover sheet, according to claim 1, further comprising a retainer for retaining the state in which focused the sheet side edge along the cord The portable solar power generation device described. The fastening means engages both ends with the solar power generation sheet side end of each side edge of the cover sheet, and the intermediate part is passed through the sheet along the side edge to receive sunlight. A pair of cords extending to the outside from the end on the opposite side of the power generation sheet, and a pair that is attached to the portion of the cord extending to the outside and holds each sheet side edge in a squeezed state. The portable solar power generation device according to claim 2 , further comprising a holder. The portable type according to claim 2 or 3 , wherein the string constituting the fastening means is passed through a plurality of through holes formed along each side edge of the cover sheet so as to be alternately inserted and sewn. Solar power generator.

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