JPH05313455A - Display device for copying machine and the like - Google Patents

Abstract

PURPOSE:To provide a display device for a copying machine, etc., where ordinary display is performed in the case of ordinary operation and a color filter is inserted in the case of the occurrence of abnormality so that an abnormal mark is displayed at the color filter part to inform a user of the abnormality. CONSTITUTION:The display device for the copying machine, etc., having a display unit which displays plural kinds of contents by itself is provided with a liquid crystal display panel 32, a backlight 33 irradiating the panel 33 with light, the color filter 35 set between the panel 32 and the backlight 33, a holding means (filter holding part) 36 holding the color filter 35, and an operational solenoid for moving the holding means 36; and the color filter 35 freely gets in and out of a gap between the panel 32 and the backlight 33 by the holding means 36 and the operational solenoid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device used for an operation panel of a copying machine or the like.

[0002]

2. Description of the Related Art Conventionally, as a display device of a copying machine or the like, as shown in, for example, Japanese Patent Laid-Open No. 56-55986, a normal notification display and a warning display are displayed in the same display in a plurality of colors. By doing so, it is possible to centrally arrange the display units and facilitate the copying operation, or
As disclosed in Japanese Patent Publication No.-80532, it is provided with a light source arranged behind a liquid crystal display panel to emit light of two or more colors, and an emission color designating section for selectively designating the color emitted by the light source. A display device has been devised which enables a partial or selective display of a color display. In general, the operation unit of the copying machine is composed of a group of keys used for normal operation and a centralized display unit showing a status display. An example of arrangement of the centralized key display section of the conventional operation section will be described below with reference to FIGS. On the operation unit, a start key 1 for executing a copy operation, a clear key 3, a density key 4, a paper key 5, a magnification key 6, a numeric keypad 7 for inputting numerical values, a mode clear key 8,
The centralized display section 2 is provided with an abnormality display section 2a and a backlight liquid crystal display 2b for displaying the status. FIG. 2 is a sectional view of the centralized display unit 2. Below the centralized display unit 2, a colored LED (red or yellow) for coloring the abnormal display unit 2a and a backlight liquid crystal display unit (hereinafter abbreviated as LCD) are mounted. ing.

[0003]

However, in the operation section using the general black-and-white LCD as described above, it is always necessary to display red in the abnormality display section, and it is necessary to display it in the LED. Therefore, there is a problem in that the number of LEDs in the abnormal state and the space for installing the LEDs are provided, so that the operation unit becomes large and it becomes difficult to add LEDs later.

[0004]

A display device for a copying machine or the like according to the present invention is a display device for a copying machine or the like having a display for displaying a plurality of contents on one display, and a liquid crystal display panel, A backlight that irradiates the liquid crystal display panel with light,
A color filter installed between the liquid crystal display panel and the backlight, holding means for holding the color filter, and an operation solenoid for moving the holding means,
The color filter is characterized in that it can be freely moved in and out between the liquid crystal display panel and the backlight by the holding means and the operation solenoid. The color filter may be formed by stacking a plurality of filters having different color tones or by arranging a plurality of filters having different color tones in parallel. Further, it is preferable to provide operation solenoids having different stroke lengths corresponding to the respective color filters in which filters having different color tones are stacked.

[0005]

A display device such as a copying machine of the present invention includes a liquid crystal display panel, a backlight for irradiating the liquid crystal display panel with light,
A color filter installed between the liquid crystal display panel and the backlight, holding means for holding the color filter, and an operation solenoid for moving the holding means,
Since the color filter can be freely moved in and out between the liquid crystal display panel and the backlight by the holding means and the operation solenoid, the normal display is displayed during the normal operation, and the color filter is inserted when the abnormality occurs. can do. If a plurality of color filters having different color tones are stacked, the color filter can switch between warning display (red) and caution display (yellow) under the same screen. If the color filter is formed by arranging a plurality of filters having different color tones in parallel, a warning display (red) and a caution display (yellow) can be displayed under the designated screen. Further, by providing operation solenoids having different stroke lengths corresponding to the filters having different color tones, it is possible to switch between one-color display and two-color display.

[0006]

EXAMPLES Examples of the present invention will be described in detail below. First Embodiment An embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 shows a sectional view of the LCD. A conductive rubber connector 34 for connecting a transmissive LCD cell 32 and a printed circuit board (PCB) 31 terminal, a bezel 30 integrally formed with these, and an LCD module and cell 32 having a side backlight 33 as illumination. The color filter 35 is inserted between the light 33 and the filter 33, the filter holder 36, the lever 42, the spring 41, and the solenoid 40. The operation of this structure will be described. During normal operation, the color filter 35 is outside the module as shown in FIG. When an abnormal state occurs here, the solenoid 40 is excited and the color filter 35 is inserted between the transmissive LCD cell 32 and the printed board 31 as shown in FIG. At the same time, an abnormal state mark is displayed on the transmissive LCD cell 32, which is colored and displayed with the color of the color filter. The flowchart is shown in FIG. As described above, the normal display is used during normal operation, and the abnormal condition mark is displayed during abnormal operation. At the same time, the color is colored by the color filter so that the user can easily discriminate.

Second Embodiment FIGS. 4 to 5 show another embodiment. Up and down 2 with respect to the above embodiment
It is configured to be overlapped with a sheet of color filters of different colors. As a result, the red filter 35a is inserted for the warning display, and the yellow filter 35b is inserted for the warning display, and the coloring is changed depending on the state. In addition, in FIG.
Reference numerals 40a and 40b denote solenoids having different strokes.

Third Embodiment FIGS. 6 and 7 show another embodiment in which two color filters 35a and 35b of different colors are arranged on the left and right sides of the above embodiment.

Fourth Embodiment FIGS. 8 and 9 relate to the second embodiment, in which solenoids 100a and 100b having different strokes are prepared.
The feature is that the coloring color is changed by changing the insertion state as shown in (a) and (b).

[0010]

As described above, a display device such as a copying machine according to the present invention includes a liquid crystal display panel, a backlight for irradiating the liquid crystal display panel with light, and a space between the liquid crystal display panel and the backlight. And a holding means for holding the color filter, and an operating solenoid for moving the holding means. The color filter includes the holding means and the operating solenoid, and Since it is possible to freely go in and out of the light, the normal display can be displayed during normal operation, and the color filter can be inserted when an abnormality occurs, and the abnormality display mark can be displayed on the color filter section. The abnormality can be notified to the user. Abnormal mark can be easily added by adding LCD software, and dedicated LE
The effect that there is no need to arrange a large number of D is produced. If a plurality of color filters having different color tones are stacked, the color filter can switch between, for example, a warning display (red) and a caution display (yellow) under the same screen. The color display function is improved. If multiple color filters with different color tones are arranged in parallel, the warning display (red) and caution display (yellow) can be displayed under the specified screen, improving the color display function. To do. Also, it is possible to perform a mixed display of two colors at the same time. Further, by providing an operating solenoid having a stroke length different from each other corresponding to each filter having a different color tone, it is possible to switch between one-color display and two-color display, thus enabling multi-function display. ..

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an example of a display device of the present invention, (a) showing a state before inserting a color filter into the display device, and (b) showing a color filter of the display device. The state inserted inside is shown.

FIG. 2 is an overall perspective view showing an example of a display device of the present invention.

FIG. 3 is an explanatory diagram showing an example in which an abnormal state is displayed on the display device of the present invention.

FIG. 4 is a schematic explanatory view showing a second embodiment of the display device of the present invention.

FIG. 5 is an explanatory diagram showing an operating mechanism portion of a color filter in the second embodiment of the display device of the present invention.

FIG. 6 is an explanatory diagram showing an operating mechanism of a color filter in a third embodiment of the display device of the present invention.

FIG. 7 is an explanatory diagram showing a state in which an abnormal state is displayed in the third embodiment of the display device of the present invention.

FIG. 8 is an explanatory diagram showing an operation function part of a color filter in the fourth embodiment of the display device of the present invention.

FIG. 9 is an explanatory diagram showing an operating state of a color filter in the fourth embodiment of the display device of the present invention, and FIGS. 9A and 9B are explanatory diagrams illustrating the operating state thereof.

FIG. 10 is an explanatory diagram showing an example of an operation chart for performing color display in the display device of the present invention.

FIG. 11 is a schematic explanatory diagram illustrating an operation unit of a copying machine.

FIG. 12 is a cross-sectional view showing an example of a conventional display device.

[Explanation of symbols]

 1 Start key 2 Central display 3 Clear key 4 Density key 5 Paper key 6 Magnification key 7 Numeric key 8 Mode clear key 30 Bezel 31 Printed board (PCB) 32 LCD cell 33 Side backlight 34 Conductive rubber connector 35 Color filter 36 Filter retention Part 40 Solenoid 41 Spring 42 Lever

Claims (4)

[Claims] 1. A display device such as a copying machine having a display for displaying a plurality of contents on one display, a liquid crystal display panel, a backlight for irradiating the liquid crystal display panel with light, and the liquid crystal display. A color filter installed between the panel and the backlight, holding means for holding the color filter, and an operating solenoid for moving the holding means, wherein the color filter includes the holding means and the operating solenoid. A display device for a copying machine or the like, wherein the liquid crystal display panel and a backlight can freely enter and exit. 2. The display device of a copying machine or the like according to claim 1, wherein the color filter is formed by stacking a plurality of filters having different color tones. 3. A display device such as a copying machine according to claim 1, wherein the color filter comprises a plurality of filters having different color tones arranged in parallel. 4. A display device for a copying machine or the like according to claim 2, wherein operation solenoids having different stroke lengths are provided corresponding to the filters having different color tones.