JPS5890223A - Miniature electronic device having keyboard part - Google Patents

Abstract

PURPOSE:To form an electronic device in a normal size without deteriorating the operability, by having a transparent keyboard part and providing a solar battery at the lower part of the keyboard part. CONSTITUTION:A keyboard part 7 of an electronic calculator 5 consists of transparent conductive films 13 and 14 which are vapor-deposited with two sheets of transparent conductors on the entire surfaces and a spacer 15. A prescribed key circuit is formed to the vapor-deposited conductor by etching. When the film 13 is pressed, any one of the key contacts 13a-13e formed on the lower side of the film 13 moves downward and then touches any one of the key contacts 14a- 14e on the film to ensure a key input. The films 13 and 14 are connected electrically to a printed board 11 via a multiconnector 16. The key symbols 17a-17e are printed to a transparent frame 17 and serve as an auxiliary plate of a solar battery 18 which is set under the frame 17. The light transmitted through the frame 17 is made incident to the battery 18 and generates electric power. This electric power is applied to an electronic parts 12 put on the board 11 via a power supply line 19. Then a display 6 is actuated to start the calculator 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small electronic device (hereinafter simply referred to as the device) having a keyboard section using a solar cell.
(hereinafter referred to as a calculator), etc., the solar cell is arranged on the 11- side, below 11111, or on the side of the display on the calculator. l; 11 Nuke 1 - The method is shown as an example of a conventional solar battery equipped calculator. Reference numeral 1 denotes a solar battery-equipped calculator, which includes a solar battery 2 placed on the top of the calculator, a display 3 provided below, and a keyboard portion 4. However, in such conventional calculators, the size of the calculator is generally larger than that of a normal π-double desk due to the solar cell, which is not desirable. Furthermore, if the calculator is made to have the same size as a normal calculator and is provided with a solar cell, there will be disadvantages in that the size of the keys, keys, etc. will be smaller due to the size of the solar cell, and the operability will be poor.

Furthermore, among solar cells, for example, amorphous solar cells use glass lath as a substrate. Furthermore, in silicon single crystal solar cells, the silicon wafer is extremely fragile. Therefore,
Conventional calculators have solar-shaped ponds placed on the surface, and many of the displays are made of glass, so there are many parts that are easy to break, so it is necessary to increase the overall strength of the calculator. .

The present invention was made in view of the above-mentioned problems, and its purpose is to place a solar cell under a transparent keyboard in a calculator, etc., and to increase the size of the keyboard. The object of the present invention is to propose a compact electronic device having a key section that is compact and does not impair operability. Still, another object of the present invention is to propose a small electronic device having a keyboard portion that can effectively prevent damage to solar cells.

Hereinafter, one V that is suitable for the present invention! ) I+H example will be explained according to the drawings.

In addition, in the following explanation, the present invention will be described with reference to solar cells.
I'll explain using an example of using a calculator. FIG. 2 is a plan view of an m-table with a solar battery according to an embodiment of the present invention. It is a 5-piece solar battery equipped with a solar cell (hereinafter referred to as 1 (hereinafter referred to as a calculator)), and a display 6 and a key date section 7 are arranged on the 1-piece 5- as shown in the figure. This key is constructed so that the door section 7 is transparent, and as will be described later, the key y1.
i Pond is arranged No 1. I'm here.

Next, the internal structure of the chamber 5 will be explained using the third sectional view Rf1', which is a sectional view of FIG. 8-n M'CJ twist 5 upper case, 9 and 2 lower cases, display '/, : + 6
It is connected to the printed board 11 through a kl connector 103-. This printed board 1
1. Electronic components 12 such as an LSI for driving the calculator 5 are connected to form an electric circuit.

The ERI display 6 is displayed on the display signal of this electric circuit power.

The keyboard part 7 is made of two transparent conductive films 13 and 14.
and a spacer 15. A transparent conductor is deposited on the entire surface of the transparent conductive film 13, 14, and a predetermined key circuit is formed on the deposited conductor by etching. Further, the transparent conductive films 13 and 14 are placed with a predetermined space in between by sandwiching a spacer 15 between them so that they are always in contact with each other. When you press the top of the transparent conductive film 13 to input all the keys, the key contact 1 formed on the bottom surface of the transparent conductive film 13 is pressed.
4- The key contacts 14a to 14e on the transparent conductive film 14 move downward and form a pair with the key contacts 13a to 13e;
By contacting people, key human resources can be developed.

Note that the transparent conductive films 13 and 14 are electrically connected to the printed board 11 via a multi-connector 16.

17 is a transparent frame, which is installed above the display 6 and below the transparent conductive film 14 as shown in the figure.The key contacts 13a to 13e, 1 on the top surface of this transparent frame
The part located directly below 4a~the is the key 1 concubine point 1? 17a to 17e are printed. 18
The sun 11'' placed under the transparent frame 17 is also a pond. In this case, the transparent frame 17 serves as a reinforcing plate for the solar cell 18/).

With the above-described configuration, in the calculator 5, light passes through the keyboard section 7 and the transparent frame 17 and enters the solar cell 18, thereby generating electric power. -Also, if the power is
The E-1U console 5 operates based on the voltage applied to the various electronic components 12 on the printed circuit board 11 via the circuit 9. Incidentally, when all the keys are input, the light incident on the solar cell 18 is traced by the finger, but the time during which this is blocked is usually from several seconds to several tens of seconds at the longest. , J: Is this really common I+? If it is between 1 and 5, power can be maintained by inserting a capacitor between the plus and minus of the power supply, so it can be easily prevented from operating.

As explained and explained above, according to the present invention, the single part of the key is made transparent, and all the solar cells are arranged below the first part of the key, so it is not necessary to increase the size of the device by arranging the solar cells. The device can be configured to a normal size without any loss or loss of operability. ! +, ta, solar type δ
It is possible to completely prevent damage to the IL. Therefore, it becomes unnecessary as a reinforcing means such as a cover.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of a conventional solar cell power station. The figure is a sectional view of the second embodiment shown in [2]. Here, 5...Ta 1ri 1) Sho 1); Ikebi'1h, east,
6... Display, 7... Keeper? -Do part, 8..."
Nix°, 9...Lower case, 11...Cylinder plate, 13.14...Transparent conductive film, 15...Subaza, 17...Transparent frame, 18...Solar cell be. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] Two parts of the key data are configured transparently, and one part of the key is 9 parts.
A small electronic device having a keyboard section, characterized in that all solar cells are arranged below the keyboard section.