JP2023012699A - Decorative member with photoelectric conversion function - Google Patents

Abstract

To provide a decorative member with a photoelectric conversion function that can improve the interior and exterior design of buildings, rather than simply converting sunlight, etc., into electric power.SOLUTION: It consists of a transparent substrate 5 of desired shape and a dye-sensitized photoelectric conversion element 7 placed on the substrate 5, the electrolyte used for the dye-sensitized photoelectric conversion element 7 contains a benzoquinone derivative/hydroquinone derivative or a composition where the ratio of the molar amount of triiodide ions to the molar amount of iodide ions is less than 1% as a redox pair.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative member having a photoelectric conversion function, and more particularly to a decorative member having a photoelectric conversion function that is provided for windows and walls of general houses and office buildings, for example.

Recently, one of the environmental problems that must be solved worldwide is the problem of global warming, and as one of the means to solve this global warming problem, it is required to control the amount of carbon dioxide emissions. . Therefore, photovoltaic power generation has been attracting attention as clean energy. Solar power generation has the advantage of being able to generate electricity in each home or office without requiring a large power generation facility.
When we think of photovoltaic power generation, we generally think of large solar panels installed on the roofs of houses or offices. There are disadvantages such as spoiling the appearance of the building.

Therefore, we focused on windows, which occupy a large area in ordinary homes and office buildings, and came up with the idea of making effective use of the sunlight that hits the windows. Various decorative members have been provided that are equipped with a photoelectric conversion function that converts sunlight into electric power.

Conventionally, decorative materials (solar power generation panels) equipped with a photoelectric conversion function installed in the windows of general houses and office buildings have been made of synthetic resin panel materials, and dye-sensitized solar cells using a resin film as a base material. A device in which a battery or an organic thin-film solar cell or the like is arranged has been proposed (see, for example, Patent Document 1).

However, in the prior art disclosed in Patent Document 1 and the like, there is no particular reference to designability, and there is a problem that the decorativeness is poor.
For example, when installing a decorative member (solar power generation panel) equipped with such a photoelectric conversion function on a window, the design when the window is viewed from the outside, or the design when the window is viewed from the inside, It is desirable to increase either or both of Specifically, for example, when looking at the window from the outside, it refers to the design that maintains or improves the external beauty of the building, such as the design of colors, patterns, or patterns that do not impair the external appearance of the building. It is desirable to have In addition, when viewed from the inside of the room, interior decoration such as a design depicting a desired scenery, a design such as a character suitable for a child's room, or a pattern or design that enhances the vitality of the office. It is desirable to refer to the enhanced designability.
In other words, there is a strong demand for the provision of photovoltaic panels (decorative members with a photoelectric conversion function) that not only have the function of simply converting sunlight into electric power, but also can improve the interior and exterior design of buildings. .

JP 2013-175695 A

The present invention has been made to solve the problems of the prior art, and the problem is not only the function of simply converting sunlight into electric power, but also the indoor and outdoor functions of buildings. To provide a decorative member having a photoelectric conversion function capable of improving designability.

In order to achieve this object, a first aspect of the present invention comprises a substrate having a desired shape and a dye-sensitized photoelectric conversion element mounted on the substrate,
The dye-sensitized photoelectric conversion element uses an electrolytic solution containing, as a redox pair, a benzoquinone derivative/hydroquinone derivative, or a composition in which the ratio of the molar amount of triiodide ions to the molar amount of iodide ions is less than 1%. A decorative member having a photoelectric conversion function characterized by being

A second aspect of the present invention is a decorative member having a photoelectric conversion function according to the first aspect of the present invention, wherein the substrate is a transparent plate.

A third aspect of the present invention is that, in the second aspect of the present invention, the decorative member having a photoelectric conversion function is arranged on the indoor side of the window glass.

The fourth aspect of the present invention is any one of the first aspect to the third aspect of the present invention, wherein the dye-sensitized photoelectric conversion element comprises a design portion using a single or a plurality of dyes. A decorative member having a photoelectric conversion function characterized by

A fifth aspect of the present invention is a decorative member having a photoelectric conversion function according to any one of the first aspect to the fourth aspect of the present invention, characterized in that a functional member is provided on a surface facing the window glass. That is.

A sixth aspect of the present invention is a decorative member having a photoelectric conversion function according to the fifth aspect of the present invention, wherein the functional member is a transparent plate having a second design portion.

According to the present invention, it is possible to provide a decorative member having not only a function of simply converting sunlight or excess light from indoor lighting into electric power, but also a photoelectric conversion function capable of improving the interior and exterior design of a building. obtain.

(a) is the first embodiment of the decorative member of the present invention, and is a schematic perspective view showing a state of use arranged on the indoor side of the windowpane; (b) is an exploded schematic perspective view of the windowpane and the decorative member of the present embodiment; It is a diagram. (a) is a second embodiment of the decorative member of the present invention, and is a schematic perspective view showing a state of use arranged on the indoor side of the window glass; (b) is an exploded schematic perspective view of the window glass and the decorative member of the present embodiment; It is a diagram.

An embodiment of the present invention will be described below.
It should be noted that this embodiment is only one embodiment of the present invention, and can be used in general decorative members for decorating indoors and outdoors. Design change is possible.
"First Embodiment"

FIG. 1 shows a first embodiment of the decorative member having a photoelectric conversion function of the present invention. In this embodiment, as an example of the decorative member of the present invention, a window for window glass in a general house, an office building, or the like is shown. A decorative panel (also referred to as window decorative film or window decorative sheet) is exemplified.
In this embodiment, the window decorative panel 3 of this embodiment is arranged (pasted) on the glass surface portion 1a of the windowpane 1 on the indoor side.

The window decoration panel 3 is composed of a substrate 5 having a desired shape and a dye-sensitized photoelectric conversion element 7 placed on the substrate 5 .

In this embodiment, the substrate 5 is rectangular and has the same size as the windowpane 1 . The substrate 5 is not particularly limited as long as it has a form (thickness, size, shape, etc.) that can be arranged on the window glass 1, and may be colored, colorless, transparent, or translucent. good too. If a transparent substrate or a semi-transparent substrate is used, it is possible to provide a form with a design, such as stained glass.
Moreover, it is preferable to be able to stick it according to the planar shape of a windowpane, a wall surface, or the like.

The dye-sensitized photoelectric conversion element 7 is assumed to be disclosed in, for example, Japanese Patent No. 6620488, Japanese Patent Application Laid-Open No. 2019-161002, or International Publication WO2019/017473 from the viewpoint of excellent design.
Specifically, the use of a light-colored electrolytic solution containing, as a redox pair, a benzoquinone derivative/hydroquinone derivative, or a composition in which the molar ratio of triiodide ions to the molar amount of iodide ions is less than 1%. The designability is improved by
In this embodiment, for example, it is assumed that a monochromatic dye-sensitized photoelectric conversion element 7 having the same shape as the substrate 5 is placed on the substrate 5 .

In this embodiment, an embodiment in which a monochromatic dye-sensitized photoelectric conversion element 7 is mounted will be described. shown) can also be configured.
A conventional technique may be used as a method for creating the design portion. For example, the methods disclosed in Japanese Patent Application Laid-Open No. 2018-206926 and Japanese Patent No. 6620488 can be adopted. Also, the design of the design portion is not particularly limited and can be changed within the scope of the present invention.

According to the present embodiment, it is possible to convert light such as sunlight and surplus light from the light source into electric power, and to enhance the design when the window is viewed from the indoor side. That is, according to the present embodiment, it is possible not only to simply convert light such as sunlight into electric power, but also to use a design depicting a desired landscape, a design such as a character suitable for a child's room, or a vitality in the office. It is possible to improve interior decoration such as a design of a pattern or a pattern that enhances the quality. In particular, in buildings such as office buildings with a large amount of window glass, it is possible to achieve power saving by effectively utilizing sunlight to obtain power, thereby contributing to the control of carbon dioxide emissions.

In this embodiment, the window decorative panel 3 of the present embodiment is arranged on the glass surface portion 1a of the windowpane 1 facing the interior side. It is also possible and within the scope of the present invention to dispose the window decorative panel 3 of the present embodiment on the glass surface portion.
When the window decorative panel 3 of the present embodiment is arranged on the glass surface portion on the outside of the window glass, a design such as a color, pattern, or pattern that does not impair the appearance of the building when the window is viewed from the outside. By doing so, it is possible to maintain or improve the appearance of the building.
Furthermore, it is also possible to arrange the window decorative panel 3 of this embodiment on both the inner and outer glass surface portions of the window glass.
In addition, it is possible to arrange it not only on the window glass of the building but also on the door, etc., and it is within the scope of the present invention.
"Second embodiment"

FIG. 2 shows a second embodiment of the decorative member 3 having a photoelectric conversion function of the present invention. The window decorative panel 3 of the present embodiment is arranged (pasted) on the indoor-side glass surface portion 1a of the window glass. In addition, about the structure and effect similar to 1st embodiment, the structure and effect of 1st embodiment are used, and description here is abbreviate|omitted.

The window decorative panel 3 in this embodiment forms the design portion 9 by partially applying the dye of the dye-sensitized photoelectric conversion element 7 . In this embodiment, the design section 9 attaches a desired pattern (picture) of a desired color to each position of the quartered area.

In this embodiment, a desired functional panel (functional member) 11 is attached to the rear surface side of the substrate 5, that is, the surface portion facing the glass surface portion 1a of the window glass 1 on the indoor side.

For example, in this embodiment, the functional panel 11 is assumed to have a second design portion 13 having a predetermined design or pattern on a transparent substrate 15 made of synthetic resin. The substrate 15 is assumed to have the same size as the substrate 5 of the window decorative panel 3, but is not particularly limited.

The second design part 13 attaches a pattern matching the pattern at a desired position of the substrate 15 so as to overlap with each design part (pattern or pattern) 9 attached to the substrate 5 of the window decoration panel 3. I have to.
For example, in the present embodiment, as shown in FIG. 2, a circular smile mark design (second design section 13) having the same diameter as the colored circular pattern (design section 9) applied to the substrate 5 of the window decorative panel 3 , or a Latin N letter pattern (second design portion 13) in the same form as the colored letter N letter pattern (design portion 9) attached to the substrate 5 of the window decorative panel 3, It is configured by adding a border pattern (second design portion 13) of only a frame of the sun in the same form as the colored sun pattern (design portion 9) attached to the substrate 5 of the decorative panel 3 for windows.

Moreover, the functional panel (functional member) 11 can be appropriately changed in design within the scope of the present invention, and for example, it may be an ultraviolet cut film, which is within the scope of the present invention. Any pattern or design can be applied to the UV cut film.

According to this embodiment, while converting sunlight into electric power, the window glass can be given a design like stained glass or can be decorated like a painting. Therefore, the designability of the window glass portion is enhanced, and the image of the entire indoor space can be changed, so that the user's interest in the indoor space can be improved.

In each of the above embodiments, the window decorative panel 3 of the present invention is arranged on the glass surface portion 1a of the window glass 1 facing the interior side, but it is arranged on the glass surface portion facing the outside. It is of course possible and within the scope of the present invention to do so.

Although illustration is omitted in each of the above-described embodiments, there are wiring for extracting power from the dye-sensitized photoelectric conversion element 3 and wiring for connecting the dye-sensitized photoelectric conversion elements 3 to each other. . When a transparent substrate is adopted as the substrate 1, such wiring is formed from a blank portion of the substrate 1 existing between the adjacent dye-sensitized photoelectric conversion elements 3 (a portion without the dye-sensitized photoelectric conversion elements 3). If it is looked at directly, it looks bad, and it may impair the aesthetic appearance.
In such a case, the blank portion of the substrate 1 between the adjacent dye-sensitized photoelectric conversion elements 3 may be patterned or colored to make the wiring difficult to see directly.

The decorative member of the present invention can convert not only sunlight but also light (surplus light) from a light source (lamp) into electric power. Alternatively, use as wallpaper or the like is also included.
The light source includes general well-known light sources such as an incandescent lamp, a straight tube fluorescent lamp, and an LED (Light Emitting Diode) lamp.
When used as a picture to be displayed on a wall or the like, the substrate need not be a transparent substrate and is optional.

In addition, it can be used as a window signboard by blocking sunlight during the daytime, and by combining a transparent substrate with letters and a pattern of dye-sensitized photoelectric conversion elements, thereby obtaining an efficient advertising effect while saving power. be able to.
In addition, it is assumed that the electric power obtained by the decorative member having a photoelectric conversion function of the present invention can be used as kinetic energy for motors, light energy for lighting, charging batteries, and as an independent power source for sensors. Furthermore, it is of course possible to store electric power in a separately provided storage unit (not shown) and use it for other electrical equipment, which contributes to power saving during use of the electrical equipment.

The decorative member of the present invention can be used in areas other than windows of ordinary houses and office buildings, and can be used, for example, by being attached to doors, inner and outer wall surfaces, and the like. Moreover, it may be a structure other than a building, such as an automobile or a ship.

1 Window glass 3 Decorative member 5 having a photoelectric conversion function Substrate 7 Dye-sensitized photoelectric conversion element 9 Design part 11 Functional member 13 Second design part

Claims (6)

Consists of a substrate having a desired shape and a dye-sensitized photoelectric conversion element placed on the substrate,
The dye-sensitized photoelectric conversion element uses an electrolytic solution containing, as a redox pair, a benzoquinone derivative/hydroquinone derivative, or a composition in which the ratio of the molar amount of triiodide ions to the molar amount of iodide ions is less than 1%. A decorative member having a photoelectric conversion function, characterized by: 2. The decorative member having a photoelectric conversion function according to claim 1, wherein said substrate is a transparent plate. 3. The decorative member having a photoelectric conversion function according to claim 2, which is disposed on the indoor side of the window glass. 4. The decorative member having a photoelectric conversion function according to any one of claims 1 to 3, wherein the dye-sensitized photoelectric conversion element comprises a design section using a single dye or a plurality of dyes. 5. The decorative member having a photoelectric conversion function according to any one of claims 1 to 4, wherein a functional member is provided on a surface facing the window glass. 6. The decorative member having a photoelectric conversion function according to claim 5, wherein said functional member is a transparent plate having a second design portion.

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