JP2002108230A - Advertisement poster using solar cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an advertisement poster using a solar cell, which makes up for the defect of the transparent solar cell and can make the use of an advantage. SOLUTION: The liquid crystal advertisement poster is constituted of a solar cell layer 2 covering the surface of a liquid crystal display 2, a back light 3 arranged at the back of the liquid crystal display 2, a battery 4, a control board 5 and an RF module 6 connected to a public line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an advertising poster, and more particularly, to an advertising poster using a solar cell.

[0002]

2. Description of the Related Art A solar cell is a device for converting light into electricity, and its principle is that light gives energy to electrons in a semiconductor, and the energized electrons are used as electricity. And most of the solar cells currently in commercial use have a conversion efficiency of 10% or more.

This means, for example, that when this solar cell is exposed to 100 mW (milliwatts) of light energy per square centimeter, 10 mW of power is generated per area. It should be noted that the value of 100 mW per square centimeter is comparable to sunlight energy in fine weather. However, in the case of rain, it is reduced to 5 to 20 mW per square centimeter. On the other hand, it is also possible to design a solar cell that absorbs only specific light, such as the infrared band. A solar cell that only absorbs infrared light looks transparent to the human eye. These transparent solar cells are still in development at each research institution.

[0004]

However, such a transparent solar cell cannot be expected to have high conversion efficiency (specifically, a conversion efficiency of about several percent), and has a drawback of an image output device such as a liquid crystal display. There is an advantage that even if it is installed on the surface, the displayed content is not significantly affected. An object of the present invention is to provide a liquid crystal advertising poster which covers the disadvantages of a transparent solar cell and makes use of the advantages.

[0005]

In order to solve the above-mentioned problems, an advertisement poster using a solar cell according to the present invention includes a wireless device connected to a public line, a flat display, and a transparent cover for covering the surface of the flat display. It is characterized by comprising a solar cell layer, a battery for storing electricity generated in the solar cell layer, and a control device for controlling display contents of the flat display. Preferably, a touch panel is provided on the flat display, and a storage area for storing data received from a user via the touch panel is provided. Also, the receiving unit of the wireless device may receive update information on display contents of the flat display from the management server, and the transmission unit may transmit data received from the user stored in the storage area to the management server. preferable. Further, the solar cell is preferably a silicon-based solar cell or a dye-sensitized solar cell. Further, it is preferable that the flat display does not consume power except during writing. Further, it is preferable to supply the power consumed by the entire poster from a battery. Further, in response to a request signal from the mobile communication terminal and / or the portable information terminal on the poster,
It is preferable to provide a short-range wireless device for transmitting information on the display content of the flat display.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an advertisement poster using a solar cell according to an embodiment of the present invention will be described in detail with reference to FIG. The liquid crystal advertising poster of FIG. 1 using a liquid crystal display as a flat display includes a solar cell layer 1 covering the surface of a liquid crystal display 2, a backlight 3 installed on the back of the liquid crystal display 2, a battery 4, a control board 5, and It is composed of an RF module 6 connected to a public line.

In FIG. 1, the solar cell layer 1 has a sufficiently thin silicon layer and is transparent because it is formed of a solar cell having transparent conductive films on both sides. Nor. In addition, by increasing its area (8000 square centimeters in the present embodiment), it is designed to absorb enough sunlight to supply power consumed by the liquid crystal display 2 and the RF module 6.

[0008] Explaining specific numerical values, the solar cell layer 1 having an area of 8000 square centimeters can generate electric power of about 3 W (watt) even in rainy weather. In addition, since the liquid crystal display 2 has the same area, the image is displayed on a relatively large screen such as 80 cm long × 1 meter wide.

Therefore, in the present embodiment, power consumption is reduced by applying a device that does not consume power except for writing to the liquid crystal display 2 (in this embodiment, a surface stabilized ferroelectric liquid crystal). . This is because this type of liquid crystal display consumes power only when rewriting display contents and does not consume power while displaying the same image. In the liquid crystal advertising poster according to the embodiment of the present invention, electricity generated in the solar cell layer 1 during image display is stored in the battery 4. As the battery 4, a lithium polymer battery or the like is used. Unlike a mobile phone, the RF module 6, which is a wireless device, does not have a transmission process of making a call or notifying a base station of a current position. The power consumed is smaller.

The contents displayed on the liquid crystal display 2 can be rewritten by remote control. The update information in that case is transmitted from the management-side server, and a transmission signal carrying this update information is received by the receiving unit of the RF module 6. The update information received by the receiving unit of the RF module 6 is passed to the control board 5. Here, the control board 5 includes an LCD controller, a CPU, and a memory (all not shown), and can update the display content of the liquid crystal display 2 based on the received update information. Therefore, the advertisement content is updated every few hours, the display contents of multiple liquid crystal advertising posters installed at remote locations are changed at the same time, and a message is displayed at the time of a disaster or emergency such as an earthquake. Etc. and can be used effectively.

Further, YES / N is displayed on the liquid crystal display 2.
It is also possible to provide a touch panel on which characters such as O, an answer number, etc. are written, and obtain an answer / response to a questionnaire or the like displayed on the screen from the user. In this case, the response / response from the user is stored in the memory of the control board 5, and when gathered to some extent (for example, 50 or more), the transmission signal carrying the information (answer information / response information) received from the user is transmitted. The transmission is transmitted from the transmission unit of the RF module 6 to the management server.

Further, a short-range wireless device (not shown) is incorporated in addition to the RF module 6 connected to the public line, and when a request is made from a portable information device (such as a mobile phone or a PDA), a wireless device such as Bluetooth is used. Various information (telephone number, e-mail address, URL, etc.) displayed on the liquid crystal display 2 can also be transmitted using communication technology.

The embodiments of the present invention have been described above.
The present invention is not limited to the above description. For example, the solar cell layer may be formed by a dye-sensitized solar cell. Further, in this embodiment, the surface stabilized ferroelectric liquid crystal is applied to the liquid crystal display. However, as in the case of the above-described liquid crystal, a costeric liquid crystal which does not consume power except for writing may be applied. However, in this case, no backlight is provided on the back. In this embodiment, a liquid crystal display is used as the flat display. However, it is apparent that the present invention is not limited to liquid crystal such as an organic EL display, an inorganic EL display, and electronic ink.

[0014]

As described above, according to the present invention, it is possible to provide an advertising poster using a solar cell, which can cover the disadvantages of the transparent solar cell and can take advantage of the advantages.

[Brief description of the drawings]

FIG. 1 is an overall view of a liquid crystal advertising poster according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solar cell 2 Liquid crystal panel 3 Backlight 4 Battery 5 Control board 6 RF module

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C006 AA28 AF31 BA12 BB11 BF02 BF16 BF45 EC05 FA41 FA47 5C080 AA06 AA10 BB05 DD22 DD26 FF01 JJ02 KK34 5G435 AA00 BB12 BB15 EE25 GG22

Claims (7)

[Claims] 1. A wireless device connected to a public line, a flat display, a transparent solar cell layer covering a surface of the flat display, a battery for storing electricity generated in the solar cell layer, and the flat surface An advertising poster using a solar cell, comprising: a control device for controlling display contents of a display. 2. The advertisement poster using a solar cell according to claim 1, further comprising: means for providing a touch panel on the flat display; and a storage area for storing data received from a user via the touch panel. An advertising poster using a solar cell, characterized in that: 3. The advertisement poster using a solar cell according to claim 1 or 2, wherein the receiving unit of the wireless device receives update information on display content of the flat display from a management server, and An advertisement poster using a solar cell, wherein a transmission unit of the device transmits data received from a user stored in the storage area to the management-side server. 4. The advertisement poster using the solar cell according to claim 1, wherein the solar cell is a silicon-based solar cell or a dye-sensitized solar cell. Advertising posters using solar cells. 5. An advertising poster using the solar cell according to claim 1, wherein the flat panel display does not consume power except during writing. Advertising poster using. 6. An advertisement using a solar cell according to claim 1, wherein the power consumed by the entire poster is supplied from the battery. Poster. 7. An advertisement poster using a solar cell according to claim 1, wherein the display content of the flat display is changed in response to a request signal from a mobile communication terminal and / or a portable information terminal. An advertisement poster using a solar cell, comprising: a short-range wireless device for transmitting information about the mobile communication terminal to the mobile communication terminal and / or the portable information terminal.