JPH07230262A - Display device - Google Patents

Abstract

PURPOSE:To freely select its setting up place in a display device displaying information and displaying content and condition of a certain thing. CONSTITUTION:This device is provided with a receiving circuit 10 receiving a radio wave signal and an optical signal and converting it into an electric signal, a drive circuit 11 receiving the output signal of the receiving circuit 10 and outputting a drive signal, a display means 12 receiving the drive signal of the drive circuit 11 and displaying and a solar battery 13 supplying power source to the receiving circuit 10 and the drive circuit 11.

Description

Detailed Description of the Invention

[0001]

The present invention can be applied to, for example, a copying machine, a printer, a facsimile, a printing machine, and the like. More specifically, the present invention relates to a display device that displays information or displays the content and state of something, such as a copying machine.

[0002]

2. Description of the Related Art Conventionally, for example, in a copying machine, a display device is integrally formed in a device body. Then, the display device displays that the developing toner has run out, that the paper has run out, that a jam has occurred, and the like.

[0003]

Therefore, in the conventional copying machine, it was not possible to arrange the display device separately from the main body of the device so that the display device was easy to see. That is, conventionally, the display device cannot be freely arranged regardless of the arrangement of the main device such as the device body.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make it possible to freely select the installation location of a display device for displaying information or displaying the content or state of something.

[0005]

Therefore, a display device according to a first aspect of the present invention is provided with a receiving circuit 10 for receiving a radio signal or an optical signal and converting it into an electric signal, as shown in the following embodiments.
A drive circuit 11 for receiving the output signal thereof and outputting a drive signal; a display means 12 for receiving the drive signal of the drive circuit 11 for displaying; and a power supply for the receiving circuit 10 and the drive circuit 11. The solar cell 13 is provided.

According to a second aspect of the present invention, there is provided a display device according to the first aspect as shown in the following illustrated embodiments.
The display means 12 is provided corresponding to each of the plurality of liquid crystal cells 21 that selectively receives and rejects the passage of light in response to the drive signal from the drive circuit 11 and each of the liquid crystal cells 21. Color filters 25 of plural colors through which light passing through the liquid crystal cell 21 and the color filters 2
And a transparent or semi-transparent display member 20 for displaying a color by shining light passing therethrough.

According to a third aspect of the present invention, in the display device according to the second aspect, as shown in the following illustrated embodiments,
The color filters 26, 27, and 28 of a plurality of colors are provided in a mixed manner in a plane, and the liquid crystal cell 21 corresponding to the same color filter is selectively driven by the drive circuit 11 for each color. Characterize.

[0008]

According to the present invention, the solar cell 13 is arranged at a desired position to drive the solar cell 13, the receiving circuit 10 receives a radio signal or an optical signal, the driving circuit 11 outputs the driving signal, and the display means 12 displays it. Do.

According to the second aspect, the drive circuit 11
Receives a drive signal from a plurality of liquid crystal cells 21, operates a part of the plurality of liquid crystal cells 21, transmits light, passes through a corresponding color filter 25,
Color display is performed by applying it to the display member 20.

According to the third aspect of the present invention, color display is performed by selectively using color filters 26, 27, 28 having the same color from a plurality of color filters 26, 27, 28 mixed in a plane.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the electrical configuration of the display device of the present invention.

The display device of the present invention, as shown in FIG.
A receiving circuit 10 that receives an optical signal and converts it into an electric signal, and a drive circuit 11 that receives the output signal and outputs a drive signal
And a display means 12 for receiving a drive signal from the drive circuit 11 for displaying, and a solar cell 13 for supplying power to the receiving circuit 10 and the drive circuit 11. Reference numeral 14 in the drawing denotes the receiving circuit 10 and the driving circuit 1.
1 is an electronic circuit including 1.

FIG. 2 shows a specific structure of the display device shown in FIG. Reference numeral 17 in the drawing is a device cover. The device cover 17 is formed in a horizontally long flat box shape, and the electronic circuit 14 is built in with the front side in the drawing as the front. On the front right side of the device cover 17, the pin photodiode 18 of the receiving circuit 10 is provided so as to be exposed on the surface. In addition, on the upper front side of the device cover 17, the solar cell 13
Incorporate. The solar cell 13 is made of silicon single crystal and receives indoor illumination light to convert it into electric energy. Further, at the lower front of the device cover 17,
The display means 12 is provided. The display means 12 is TN
Are arranged in the shape of various pictograms 12a, 12b, and 12c by using the liquid crystal of the segment type of STN type or STN type, and the contents and state of the main body (main device) of the copying machine are displayed by the pictograms 12a, 12b, and 12c. In the figure, the left pictogram 12a is a developing toner supply display, the middle pictogram 12b is a paper supply display, and the right pictogram 12c is a serviceman call display. Then, the device cover 17 is hung from the ceiling by the hanging chain 19 and the display device is installed at an arbitrary position in the room.

In the main body of the copying machine (not shown),
For example, when developing toner runs out due to use over time,
The detection sensor detects this and sends a detection signal to the control device. Then, the control device sends a drive signal to the transmitting circuit to drive the transmitting circuit to blink the LED.

Then, in the display device, the optical signal of the blinking light is received by the pin photodiode 18 and converted into an electric signal by the receiving circuit 10. Then, the receiving circuit 10
Sends a signal to the drive circuit 11 and outputs a drive signal in the drive circuit 11 in response to the signal and applies a voltage to the liquid crystal of the pictogram 12a to operate the liquid crystal.
Display of toner replenishment is displayed at a.

In the illustrated embodiment described above, the receiving circuit 10 is provided with the pin photodiode 18, which allows the LE to operate.
The configuration is such that the blinking light (optical signal) of D is received. But,
Although not shown, the receiving circuit 10 may be configured to receive a radio wave signal instead of an optical signal. With such a configuration, it is possible to relatively omnidirectionally receive the signal without interruption of the signal.

Further, in the illustrated embodiment described above, the display means 12 is configured to display using liquid crystal. However, although not shown, for example, a red light emitting diode (LED) may be used instead of the liquid crystal. When the LED is used in this manner, high contrast is obtained, and it is possible to view from a distant position or a wide angle.

Further, in the illustrated embodiment described above, the display means 12 is provided in a plane by arranging the pictograms 12a, 12b, 12c. However, as shown in FIG. 3, the display means 12 may be formed three-dimensionally and displayed in color instead of pictograms. In FIG. 3 showing another embodiment of the present invention, reference numeral 20 is a display member. The display member 20 is made of a transparent or translucent material into a rectangular box shape, and the electronic circuit 14 is provided inside. On the upper surface of the display member 20, four openings 20a are provided, leaving an outer periphery and a cross-shaped frame, the solar cell 13 is provided on the outer periphery, and the openings 20a are provided.
Liquid crystal cells 21 ... Are provided by closing a. As shown in FIG. 4, each of the liquid crystal cells 21 ... Has color filters 25 of red, blue, yellow, green, etc. on the lower surface thereof.
... are provided in combination. Then, the display member 20 is hung from the ceiling with the hanging string 30 and the display device is installed at an arbitrary position in the room.

When a radio signal or an optical signal is received, the electronic circuit 14 is driven to drive the plurality of liquid crystal cells 21 ...
Of the light source L, the light L from the light source is passed through the corresponding color filter 25, the light of the same color as the color filter 25 is applied to the inner surface of the display member 20, and the display member 20 displays a red color, for example. Do. When performing another display, the color display such as blue or yellow is performed in the same manner as described above. In this way, it is possible to make it easier to see by displaying in color, and it is possible to increase the amount of information by displaying in multiple colors.

In the illustrated embodiment described above, the display member 20 of the display means 12 has a rectangular box shape. But,
As shown in FIG. 5, the display member 20 of the display unit 12 may have a round shape except for the upper surface.

In the illustrated embodiment described above, the display means 12 is provided with the color filters 25 of a single color in each liquid crystal cell 21. However, the liquid crystal cell 21 (not shown) is composed of a cell group in which small cells are assembled, and as shown in FIG. 6, a plurality of color filters 26 ... 27.
28 ... may be provided in a mixed manner in a plane. Then, the liquid crystal cell group corresponding to the same color filter, for example, the red color filter 26 ... Is driven by the drive circuit 11. As a result, it is possible to eliminate the difference in brightness of the display member 20 between a place far from the liquid crystal and a place close to the liquid crystal, and the display member 20 develops color without deviation.

[0022]

Therefore, according to the present invention, the following effects can be obtained in a display device for displaying information or displaying the content or state of something. For example, since it is provided separately from the main device and configured to receive a radio signal for display, it can be placed at a desired position apart from the main device. Since a solar cell is used, there is no need to replace or charge the battery, and the arrangement position can be freely selected.

According to the second aspect of the invention, it is possible to perform easy-to-see display by color display of the display member. In addition, the amount of information can be increased by displaying a plurality of colors.

According to the third aspect, it is possible to solve the problem that the brightness of the display member is different between the position far from the liquid crystal and the position close to the liquid crystal, and the display member can color uniformly without deviation.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a display device of the present invention.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is a perspective view of a display device according to another embodiment.

FIG. 4 is an exploded schematic perspective view of a part thereof.

FIG. 5 is a perspective view of a display device according to still another embodiment.

FIG. 6 is a perspective view of a part of the color filter.

[Explanation of reference numerals] 10 receiving circuit 11 driving circuit 12 display means 13 solar cell 20 display member 21 liquid crystal cell 25 color filter 26 red color filter 27 blue color filter 28 yellow color filter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kimihiko Muto 2-9-13 Nakameguro, Meguro-ku, Tokyo Stanley Electric Co., Ltd.

Claims (3)

[Claims] 1. A receiving circuit for receiving a radio signal or an optical signal and converting it into an electric signal, a drive circuit for receiving the output signal and outputting a drive signal, and a display for receiving the drive signal of the drive circuit and displaying. A display device comprising means and a solar cell that supplies power to the receiving circuit and the driving circuit. 2. A plurality of liquid crystal cells that receive the drive signal from the drive circuit and selectively allow or reject the passage of light, and the display means are provided corresponding to the respective liquid crystal cells, respectively. The color filter according to claim 1, comprising a color filter of a plurality of colors through which light passing through the corresponding liquid crystal cell passes, and a transparent or semi-transparent display member for displaying a color by being hit by the light passing through the color filter. Display device. 3. The color filters of the plurality of colors are provided in a mixed manner in a plane, and the liquid crystal cells corresponding to the same color filters are selectively driven by the driving circuit for each color. Display device according to.