Display

Abstract

To provide a display which is more compact and easy to be installed by eliminating the need to connect an external power source.SOLUTION: In a display 1, there are overlapped two layers of a layer of a display section 20 including a sheet-like display or a sheet-like illumination and a layer of a solar cell section 10 provided so as to cover a surface of the display section 20, including a thin film-like solar cell, through which light is transmitted, and being capable of generated power to the display section 20. The two layers of the layer of the display section 20 and the layer of the solar cell section 10 are overlapped and there is nothing largely protruding in vertical and horizontal directions of the display section 20, such that the display 1 is more compact, lightweight and easy to be installed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a display device that is installed indoors or outdoors. [Background technology]

[0002] For example, Patent Document 1 discloses a display device that is installed outdoors and performs advertisements, guidance, etc. The display device described in Patent Document 1 has a vertically elongated shape, and from top to bottom, a wind power generation unit, a solar power generation unit, a display unit, and a storage battery are arranged in that order. Since the display device has a power generation unit that uses natural energy, there is no need to connect an external power source. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-095369 A Summary of the Invention [Problem to be solved by the invention]

[0004] The display device described in Patent Document 1 does not require connection to an external power source, but it is equipped with a wind power generation unit and a solar power generation unit above the main display unit which displays advertisements, guidance, etc., and also has a storage battery below the display unit, making it very large and difficult to install.

[0005] An object of the technique disclosed in this specification to solve the above problems is to provide a display device that does not require connection to an external power source, is more compact, and is easier to install. [Means for solving the problem]

[0006] In order to solve the above problems, the display disclosed in this specification takes the following measures.

[0007] The first means is a display device comprising two superimposed layers: a display section layer having a sheet-like display or sheet-like lighting, and a solar cell section layer arranged to cover the surface of the display section and having a thin-film solar cell that transmits light and can supply generated electricity to the display section.

[0008] According to the first aspect, the display device is made of two layers, a display layer and a solar cell layer, and there is nothing that protrudes significantly above, below, left, or right of the display device, making it more compact and easier to install. In addition, since the solar cell generates electricity using light from the display device or from outside, there is no need to connect an external power source, and energy saving effects can be improved. In addition, since the display device has a thin shape with two layers stacked on top of each other, it is easy to install on walls indoors or outdoors, and the amount of protrusion is small, so it does not get in the way.

[0009] The second means is a display related to the first means described above, which is a display having three layers stacked on top of each other: a layer of a secondary battery section provided on the back surface of the display section, which is the side opposite the solar cell section, and which has a secondary battery capable of storing electricity generated by the solar cell section and supplying the stored electricity to the display section; a layer of the display section; and a layer of the solar cell section.

[0010] According to the second means, by providing a secondary battery, if there is surplus power generated by the solar cell, it is charged (stored) and if there is a power shortage, it is discharged, making it possible to effectively utilize the power. In addition, since it has a thin shape with three layers stacked on top of each other, it is easy to install on walls indoors or outdoors, and since it does not protrude much, it does not get in the way. Effect of the Invention

[0011] By taking the above-mentioned measures, the display disclosed in this specification does not require connection to an external power source, making it more compact and easier to install. [Brief description of the drawings]

[0012] [Figure 1]FIG. 2 is a diagram illustrating an example of the configuration of a display device according to the first embodiment. [Diagram 2] 1A to 1C are diagrams illustrating an example in which the display device according to the first embodiment is used for indoor and outdoor advertising and guidance. [Diagram 3] FIG. 11 is a diagram illustrating an example of the configuration of a display device according to a second embodiment. [Figure 4] FIG. 11 is a diagram illustrating an example in which the display device according to the second embodiment is used as an indoor emergency light. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] <Display device 1 according to the first embodiment (FIG. 1)> Hereinafter, an embodiment will be described with reference to the drawings. Fig. 1 shows an example of the overall configuration of a display device 1 according to a first embodiment. As shown in Figs. 1 and 2, the display device 1 has three layers stacked on top of each other: a solar cell section 10 layer, a display section 20 layer, and a secondary battery section 30 layer.

[0014] The display unit 20 is a layer having a sheet-like display or sheet-like illumination. For example, the sheet-like display may be a liquid crystal display, an organic EL display, an inorganic EL display, or the like. For example, the sheet-like illumination may be an LED illumination. In this embodiment, an example in which the display unit 20 is a sheet-like display will be described. In this case, the display unit 20 can display still image information and video information, which will be described later, and the display 1 can be used as a so-called digital signage, such as for advertisements and guidance.

[0015] The solar cell section 10 is a layer having a thin-film solar cell that transmits light and is provided so as to cover the surface of the display section 20. The solar cell section 10 is, for example, a transparent thin-film perovskite solar cell. When a perovskite solar cell is used, it is possible to generate power even with relatively weak light, and it is preferable because it generates power using light from the display section 20 (light from the back surface of the solar cell section 10) or light from the surroundings (external) (light from the front surface of the solar cell section 10). In addition, when a thin-film perovskite solar cell that transmits light is used, it is preferable because even if the display section is not flat but curved, the display section 20 can be appropriately covered along the curved surface.

[0016] The secondary battery section 30 is a layer having a secondary battery provided on the back surface of the display section 20, which is the surface opposite to the solar cell section 10. As shown in Fig. 1, the secondary battery section 30 has a secondary battery that can charge (store) at least a portion of the power generated by the solar cell section 10 via the control device 50 and can supply the stored power to the display section 20 via the control device 50 as necessary.

[0017] The control device 50 has a CPU, a ROM, a RAM, etc., and can perform various controls. For example, as shown in Fig. 1, the control device 50 receives power generated by the solar cell unit 10 via a path 15, and supplies power to the display unit 20 via a path 25. If there is surplus power to the power supplied from the solar cell unit 10 to the display unit 20, the control device 50 charges (stores) the surplus power in the secondary battery unit 30 via a path 35 (the control device 50 has a charging circuit). If there is a shortage of power supplied from the solar cell unit 10 to the display unit 20, the control device 50 discharges the shortage of power from the secondary battery unit 30 via a path 36, and supplies power to the display unit 20 via the path 25 (the control device 50 has a discharging circuit).

[0018] The control device 50 can also transmit and receive various information to and from a terminal device 80 such as a personal computer through wireless or wired communication (the control device 50 has an antenna and a communication circuit). For example, a user can use the terminal device 80 to communicate with the control device 50 and instruct the operation of the control device 50. The control device 50 can retrieve still image information, video information, and the like to be displayed on the display unit 20 from the terminal device 80 in response to an instruction from the user via the terminal device 80. The control device 50 can also retrieve still image information, video information, and the like to be displayed on the display unit 20 from a storage device 90 such as a USB memory or a memory card connected to the control device 50 in response to an instruction from the user via the terminal device 80. The control device 50 can output information such as still image information and video information to the display unit 20 via a path 26 as shown in FIG. 1 in response to an instruction from the user via the terminal device 80, and display the information on the display unit 20.

[0019] <Example of using display unit 1 (Fig. 2)> FIG. 2 shows an example in which the above-mentioned display device 1 is installed on an indoor or outdoor wall surface or the like and used as digital signage for advertisements, guidance, etc. The display unit 20, which displays advertisements (e.g., a poster screen) and guidance (e.g., a screen showing a map of the surrounding area), has almost no protrusions on the top, bottom, left, or right sides (the control device 50 protrudes only slightly), is thin, and is relatively lightweight, so it can be easily installed on a wall surface or the like. In addition, since the solar cell unit 10 generates power and supplies it to the display unit 20 and the control device 50, there is no need to connect an external power source. In addition, when a perovskite solar cell is used as the solar cell unit 10, it is preferable because it is thin-film, lightweight, and can generate power even with relatively weak light.

[0020] The above-described display device 1 has an example in which it has the secondary battery unit 30, but the secondary battery unit 30 may be omitted and the display device 1 may have two layers, a display unit 20 layer and a solar cell unit 10 layer, stacked on top of each other. In this case, when the surroundings are bright and the amount of power generated by the solar cell unit 10 is greater than the power consumption of the display unit 20 and the control device 50, the display operation by the display unit 20 can be continued.

[0021] In the above explanation, an example has been described in which a sheet-like display is used as the display unit 20 to display advertisements, guidance, etc., but it is also possible to use sheet-like lighting (such as LEDs) as the display unit 20, prepare a transparent sheet on which advertisements, guidance, etc. are printed, and replaceably attach the transparent sheet to the surface of the solar cell unit 10 to display advertisements, guidance, etc. When a sheet-like lighting is used as the display unit 20, the secondary battery unit 30 and the control device 50 may be omitted, and the power generated by the solar cell unit 10 may be directly supplied to the display unit 20.

[0022] <Display 2 according to the second embodiment (FIG. 3)> Next, the display device 2 of the second embodiment will be described with reference to Figs. 3 and 4. Fig. 3 shows an example of the overall configuration of the display device 2. In the second embodiment, an example in which the display device 2 is applied to an indoor emergency light is shown. As shown in Fig. 3, the display device 2 has a layer of a solar cell unit 10, a layer of a display unit 21, a layer of a secondary battery unit 30, a control device 51, and an illuminance detection device 70 (e.g., a brightness sensor, a luminance sensor, a light sensor, etc.). The layer of the solar cell unit 10, the layer of the display unit 21, and the layer of the secondary battery unit 30 are stacked. The display device 2 of the second embodiment is an emergency light, and is different from the display device 1 of the first embodiment in that the display unit 21 is a sheet-like illumination, and the control device 51 controls the power to the display unit 21 (illumination) and the secondary battery unit 30 according to the surrounding brightness detected by the illuminance detection device 70. Hereinafter, the differences from the display device 1 of the first embodiment will be mainly described.

[0023] The solar cell unit 10 is the same as that in the first embodiment, and therefore the description thereof will be omitted. The electric power generated by the solar cell unit 10 is input to the control device 51 via a path 15.

[0024] In this case, the display unit 21 is a sheet-shaped light, for example, a sheet-shaped LED. The display unit 21 emits light when power is supplied from the control device 51 via the path 25.

[0025] Similar to the first embodiment, the secondary battery section 30 is a layer having a secondary battery provided on the back surface of the display section 21, which is the surface opposite to the solar cell section 10. Also similar to the first embodiment, the secondary battery section 30 is capable of charging (storing) at least a portion of the power generated by the solar cell section 10 via the control device 51, and is capable of supplying the stored power to the display section 21 via the control device 51 as necessary.

[0026] The control device 51 has a CPU, a ROM, a RAM, etc., and can perform various controls. For example, as shown in Fig. 3, when the control device 51 determines that the surroundings are brighter than a predetermined illuminance based on a detection signal from the illuminance detection device 70, it determines that it is not necessary to emit light as an emergency light, and charges (stores) the power supplied from the solar cell unit 10 via a path 15 to the secondary battery unit 30 via a path 35 (the control device 51 has a charging circuit). Also, for example, when the control device 51 determines that the surroundings are darker than a predetermined illuminance based on a detection signal from the illuminance detection device 70, it determines that it is necessary to emit light as an emergency light, discharges the secondary battery unit 30 via a path 36 (the control device 51 has a discharging circuit), and supplies power to the display unit 21 via a path 25 to cause the display unit 21 to emit light.

[0027] <Example of using display 2 (Fig. 4)> FIG. 4 shows an example in which the above-mentioned display device 2 (emergency light in this case) is installed on a wall adjacent to an emergency door indoors. Since there is almost nothing protruding above, below, left or right of the display unit 21, which is the light (the control device 51 and the illuminance detection device 70 protrude slightly), and since it is thin and relatively lightweight, it can be easily installed on a wall. Furthermore, when the surroundings are bright, the power generated by the solar cell unit 10 is charged (stored) in the secondary battery unit 30, and when the surroundings are dark, the power of the secondary battery unit 30 is supplied to the display unit 21 to make the display unit 21 emit light, so there is no need to connect an external power source. Furthermore, when a perovskite solar cell is used as the solar cell unit 10, it is preferable because it is thin-film-like, lightweight, and can generate power even with relatively weak light. The display device 2 is convenient because it emits light, for example, when a power outage occurs at night. Furthermore, since the display device 2 generates power with its own light when emitting light, it can emit light for a longer period of time.

[0028] <Effects etc.> In the displays 1 and 2 of the first and second embodiments, the solar cell section 10 is a thin film that transmits light, and therefore does not block the display or light of the display sections 20 and 21. In addition, the three layers, namely the solar cell section 10 layer, the display section 20 or display section 21 layer, and the secondary battery section 30 layer, are stacked together to make the display extremely compact and lightweight, and since no external power source is required, it can be easily installed on a wall surface, etc.

[0029] Furthermore, the display device 1 of the first embodiment can omit the secondary battery unit 30. When the secondary battery unit 30 is omitted, the display device 1 becomes even more compact (thinner), lightweight, and bendable, and even if the wall surface on which it is installed is not flat but curved, the display device 1 can be installed so as to fit along the curved surface.

[0030] <Other> The display 1 and display 2 of the technology disclosed in this specification are not limited to the configuration, structure, appearance, operation, etc. described in this embodiment, and various modifications, additions, and deletions are possible without changing the gist of the technology disclosed in this specification.

[0031] In the description of this embodiment, the display device 1 is used for displaying advertisements and guidance, and the display device 2 is used as an emergency light, but the uses are not limited to these.

[0032] In the description of the present embodiment, a perovskite solar cell has been taken as an example of a thin-film solar cell that transmits light, but any thin-film solar cell that transmits light may be used. [Explanation of symbols]

[0033] 1, 2 Display 10 Solar Cell Department 15, 25, 26, 35, 36 Routes 20, 21 Display section 30 Secondary battery section 50, 51 Control device 70 Illuminance detection device 80 Terminal Equipment 90 Memory device

Claims

1. A display, A display layer having a sheet-like display or sheet-like illumination; a solar cell layer provided so as to cover a surface of the display unit, the solar cell layer having a thin-film solar cell that transmits light and capable of supplying generated electricity to the display unit; The two layers are stacked. Indicator.

2. 2. The display according to claim 1, a layer of a secondary battery unit provided on a back surface of the display unit opposite to the solar cell unit, the layer including a secondary battery capable of storing power generated by the solar cell unit and supplying the stored power to the display unit; A layer of the display portion; A layer of the solar cell portion; The three layers are stacked. Indicator.

Images