Sunshade generating electricity

Abstract

To provide a sunshade capable of blocking sunlight by being placed in a place where sunlight shines, such as the front part of a vehicle, near the entrance of a store, or a window of a house.SOLUTION: A sunshade 7 has electrodes 2.2 on both sides sandwiching a perovskite layer 1, and the entire surface is covered with a sealing material 3. A perovskite solar light sheet 8 is attached, which is configured with a protective material 4 on the front side and a back sheet 5 on the back side, and a battery that can store the electricity generated by the perovskite solar light sheet 8 is connected to the sunshade.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a sunshade, for example, a sunshade that is installed facing the front of a vehicle to block sunlight and generate electricity at the same time. [Background technology]

[0002] In recent years, sunshades have been used to block the harsh summer sunlight. There are many uses for them. For example, a sunshade installed facing the windshield of a parked vehicle can prevent sunlight from entering the interior of the vehicle. Also, various sunshades are known, such as sunshades that are configured like an umbrella to cover almost the entire vehicle, and sunshades that can be installed to cover the entrance of a store or the windows of a house.

[0003] Sunshades can block strong sunlight, so if they are installed facing the windshield of a vehicle, they can help to reduce the temperature rise inside the vehicle to a certain extent when it is parked. Furthermore, if they are installed to cover the entrance to a store or a residential window, they will block strong sunlight from entering the room, preventing the temperature inside from rising. FIG. 3 is a specific example showing a sunshade (A) that can be installed facing the inner surface of the windshield of a vehicle.

[0004] The windshield sunshade (A) is roughly trapezoidal with rounded corners, a horizontal upper edge (B) and a recess (C) in the center, so that when installed, it can be attached to the rearview mirror located in the center of the front of the ceiling inside the vehicle to prevent it from falling over. In addition, it is configured so that it can be folded up small when not in use, and for this reason, multiple folding surfaces (D), (D)... are connected via folds (E), (E)... Therefore, these multiple folding surfaces (D), (D), etc. can be folded via creases (E), (E).

[0005] Incidentally, although conventional sunshades can block sunlight, they cannot generate electricity from the sunlight that hits them. A solar panel is a rectangular plate-like body having a certain thickness, and is heavy, so that a sunshade cannot be formed using this solar panel. In other words, it is not possible to attach a solar panel to the windshield sunshade of a vehicle shown in FIG. Even if the solar panel has a folding surface (D) shape, it is impossible to fold it via a hinge. Figure 4 shows a cross section of a conventional silicon solar panel (F). The fragile silicon wafer (G) is reinforced with tempered glass (H), making it necessary to have a certain thickness and weight.

[0006] That is, electrodes (R) are provided on both sides of a silicon wafer (T), the silicon wafer (T) with the electrodes (R) is covered with a sealing material (J), reinforced glass (H) is provided on the front side, and a back sheet (L) is provided on the back side. The whole structure is surrounded by a frame (E). For this reason, silicon solar panels (F) are rectangular plates that are placed on the roofs of houses or mounted and arranged on a rack installed on a large piece of land.

[0007] Sunshades are required to block sunlight and be compact enough to be stored when not in use. The "automobile sunshade" described in Patent Publication No. 2021-130447 is a sunshade that can be easily attached to the windshield on the inside of the vehicle when in use, and can be stored compactly without being removed when not in use or when driving, so as not to impair forward visibility.

[0008] That is, it is composed of a first shade, a second shade, and a frame having a rail portion in the first frame and a drawer portion in the second frame, and the fitting portion of the drawer portion is formed by loosely fitting into the cavity of the rail portion. By adding a hook-and-loop fastener, a band, and a hook to the above configuration, the sunshade can be stored compactly on the dashboard, and by attaching the unfolded sunshade body to a clip attached to the sun visor, it becomes a sunshade that covers the windshield.

[0009] The "Sunshade for Automobiles" pertaining to Utility Model Registration No. 3216632 is a sunshade for automobiles with excellent light-blocking properties that does not bend or warp even when a drive recorder is attached to the windshield of a vehicle. This sunshade for an automobile is attached to the inside of the front window of the automobile, and includes a front sunshade body and a mounting bag-like cloth as a means for attaching the sunshade body to a sun visor provided in the automobile.

[0010] [Patent Document 1] "Automobile Sunshade" according to Patent Publication No. 2021-130447 [Patent Document 2] "Automobile Sunshade" related to Utility Model Registration No. 3216632 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0011] Thus, although conventional sunshades can block strong sunlight, they cannot utilize this sunlight to generate electricity. The problem that the present invention aims to solve is this problem, and provides a sunshade that can generate electricity. That is, since the sunshade is always exposed to strong sunlight, this sunlight is used to generate electricity, which is then stored in a battery and used when needed. [Means for solving the problem]

[0012] The sunshade is made of a thin sheet, so its shape can be freely changed, folded, rolled up, etc. It can be placed on the inside of the windshield of a parked vehicle and folded up when not in use, or it can be installed at the entrance of a store and rolled up when not in use. Therefore, the sunshade of the present invention uses perovskite instead of the conventional silicon wafer.

[0013] Perovskite is composed of small crystals made primarily from iodine, and a layer is created by assembling these small crystals, with electrodes placed on both sides of the perovskite layer. The electrodes sandwiching the perovskite layer are covered with a sealing material, a protective material is provided on the front surface, and a back sheet is provided on the back surface to form a perovskite solar cell. The perovskite layer, which is made up of an aggregate of small crystals, is thin, so the perovskite solar sheet is constructed as a flexible sheet.

[0014] The perovskite solar sheet is attached to a sunshade and used as a sunshade that can block strong sunlight, while at the same time generating electricity using the sunlight that hits it. A battery is attached to one corner of the sunshade, and electricity generated by the perovskite solar sheet is stored in the battery. Although there are no specific limitations on how the electricity stored in the battery can be used, it can be used primarily as a power source during disasters. Effect of the Invention

[0015] The sunshade of the present invention is equipped with a perovskite solar light sheet, and the perovskite solar light sheet of the sunshade installed to block sunlight generates electricity, which is stored in a battery. Incidentally, the electricity stored in the battery can be used for various purposes, but it can also be effectively used as a power source during disasters, which have become more frequent in recent years. It can also be used as a temporary power source during outdoor activities such as camping. [Brief description of the drawings]

[0016] [Figure 1] Close-up cross-section of a perovskite solar sheet. [Diagram 2] A sunshade fitted with a perovskite solar sheet and placed at the front of a vehicle. [Diagram 3] A conventional sunshade that is placed at the front of a vehicle. [Figure 4] Cross-section of a conventional silicon solar panel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Figure 1 shows an example of a cross-sectional enlarged view of a perovskite solar sheet, where 1 represents the perovskite layer, 2 the electrodes, 3 the encapsulant, 4 the protective material, and 5 the backsheet. The perovskite layer 1 is constituted as an aggregate of small crystals 6,6..., the main component of which is iodine. In other words, since it is not an integrated rigid body, it is resistant to distortion and is thin and lightweight.

[0018] Electrodes 2, 2 are provided on both sides (front and back) of this thin and lightweight perovskite layer 1, and a sealing material 3 is provided so as to cover the electrodes 2, 2. The electrodes 2, 2 sandwiching the perovskite layer 1 are fixed by the sealing material 3, and the sealing material 3 has a protective material 4 on its front surface and a back sheet 5 on its back surface. Because the perovskite layer 1 is composed of an aggregate of small crystals 6,6..., i.e., it is not a hard, unified rigid body, it can bend and flex, and when the perovskite solar sheet shown in Figure 1 is attached to a sunshade, it can bend and fold together with the sunshade.

[0019] Here, the specific means for attaching the perovskite solar light sheet to the sunshade is not limited. It can be fixed by pinning at multiple points, or it can be attached using an adhesive. Incidentally, the present invention does not limit the specific use of the sunshade to which the perovskite solar light sheet is attached. For example, it can be placed facing the inside of a vehicle's windshield, or it can be used to cover the entrance of a store to prevent sunlight from entering.

[0020] The perovskite solar cell is characterized by its thinness and light weight, which allows it to be attached to a conventional sunshade. In addition, its flexibility allows the sunshade to be folded or rolled up for compact storage when attached to the sunshade. Furthermore, perovskite solar sheets can generate electricity even under weak light, and can be charged into a mobile battery for use when needed.

[0021] FIG. 2 shows a specific example of a sunshade 7 placed facing the windshield of a vehicle, and perovskite solar light sheets 8, 8 . . . are attached to this sunshade 7. The sunshade 7 has a plurality of folds 9, 9..., and is folded via these folds 9, 9.... Perovskite solar light sheets 8, 8... are attached to folding surfaces 10, 10... separated by the folds 9, 9.... Therefore, when the sunshade 7 is folded, the perovskite solar light sheets 8, 8... are also folded together with the folding surfaces 10, 10....

[0022] The sunshade 7 is provided with an output port 11, and electricity generated when sunlight hits the perovskite solar light sheets 8, 8... is stored in a specified battery from the output port 11. Of course, it is also possible to use the electricity directly without storing it.

[0023] The sunshade 7 shown in Figure 2 is divided and attached to each folding surface 10, 10..., but it is also possible to attach a single large perovskite solar light sheet. In this way, even if it is a single large perovskite solar light sheet, if it has a thickness of 1 mm or less, it will be folded via the folds 9, 9... even if it is attached to the sunshade 7. [Explanation of symbols]

[0024] 1 Perovskite layer 2 electrodes 3. Encapsulating material 4. Protective materials 5 Back Seat 6 crystals 7. Sunshade 8. Perovskite solar sheet 9 Folds 10 Folding surface 11 Output Ports

Claims

1. This sunshade can be placed in places where sunlight shines, such as the front of a vehicle, near the entrance of a store, or on a residential window, to block sunlight. The sunshade is characterized in that it has a perovskite solar light sheet attached to it, which is configured by providing electrodes on both sides of a perovskite layer, covering the entire sunshade with a sealing material, providing a protective material on the front side, and a back sheet on the back side, and can be connected to a battery that can store electricity generated by the perovskite solar light sheet.

2. A sunshade that enables the electricity stored in the battery to be used as a power source in the event of a disaster.

3. This sunshade allows the electricity stored in the battery to be used as a power source during outdoor activities such as camping.

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