JPH08292730A - Display device - Google Patents

Abstract

PURPOSE: To provide a display device capable of making color display of not only the display contents obtainable by the visible light transmitted through a display section but also the information of specified patterns, such as characters and pictures, in the display section. CONSTITUTION: This display device irradiates the display section 3 with a visible light emitted from a built-in light source 6 and makes display by the transmitted light obtd. in the display section 3. The display device is provided with light emitting lamps 11, 12 which emit only the light having specific wavelength in addition to the light source 6 and a fluorescent pigment 15 which emits fluorescent color by reacting with the specific wavelengths projected from these light emitting lamps 11, 12 is applied to at least a part of the display section 3.

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 in electronic equipment and the like.

[0002]

2. Description of the Related Art A conventional display device of this type is, for example, a VT.
A display device for displaying the operation unit of the R (video tape recorder) will be described below with reference to FIGS. Here, FIG. 10 is a perspective explanatory view showing an outline of a VTR using a conventional display device, FIG. 11 is a side cross-sectional explanatory view showing a normal time in the conventional display device, and FIG. 12 is a switch-on state in the conventional display device. FIG.

In FIGS. 10 to 12, reference numeral 1 is a front operation panel of a VTR, 2 is an operation button 2 projecting from the front operation panel 1, and 3 is a display plate 3 provided in an upper opening of the operation button 2. The display plate 3 is a sheet on which characters and the like are printed, and a process for diffusing light is applied to the inside. A printed circuit board 4 is provided with a tact switch 5 corresponding to the operation button 2 and an LED lamp 6 as a light source for illuminating the display board 3.

In the above structure, the operation button 2 is attached by inserting and welding the hole 2a provided at one end thereof into the convex portion 1a on the rear surface of the front operation panel 1, and the other end through the hinge portion 2b. The tact switch 5 can be pressed by the keystroke section 2c provided on the.

In the display device configured as described above, when the operation button 2 is pressed in the direction of arrow A, the tact switch 5 is turned on, the desired function is executed, and the LED lamp 6 is turned on. It This LED lamp 6
The letters and the like printed on the display plate 3 can be displayed by the irradiation light from.

Next, what is operated and displayed by the operation button itself will be described below with reference to FIGS. 13 to 15. The same parts as those in the above-mentioned conventional example are designated by the same reference numerals and the description thereof will be omitted. Here, FIG. 13 is a perspective explanatory view schematically showing a VTR using another conventional display device, and FIG.
FIG. 4 is a side sectional explanatory view showing a normal state in another conventional display device, and FIG. 15 is a side sectional explanatory diagram showing a switch-on state in another conventional display device.

In FIGS. 13 to 15, reference numeral 1 is a front operation panel of a VTR, 2 is an operation button 2 projecting from the front operation panel 1, and 3 is a display plate provided in a lower opening of the operation button 2. 3, characters and the like are printed on the display plate 3. A printed circuit board 4 is provided with a tact switch 5 corresponding to the operation button 2 and an LED lamp 6 as a light source for illuminating the operation button 2.

In the above structure, the operation button 2 is
The entire part is molded with a resin that allows light to easily pass through, or only the central part of the part protruding from the front operation panel 1 is molded with a material having a high light transmittance.

In the display device configured as described above, when the operation button 2 is pressed in the direction of arrow A, the tact switch 5 is turned on, the desired function is executed, and the LED lamp 6 is turned on. It This LED lamp 6
The operation button 2 can be lit and displayed by the irradiation light from. With this, it is possible to recognize the operation / non-operation state of the function corresponding to the operation button 2.

[0010]

In recent years, as electronic devices such as VTRs have increased in function, the number of operation buttons tends to increase. Therefore, in order to reduce the number of operation buttons, measures are taken such that when an operation button that executes a certain function is pressed, the operation button is changed to another function. At the same time, with the miniaturization of electronic devices,
It is necessary to reduce the display area.

However, in the above-described conventional display device, only the display contents printed on the display plate 3 can be displayed, and the operation button 2 which is lit and displayed also operates.
Since only the non-operating state can be recognized, a plurality of small operation displays are required for one operation button 2, which is very hard to see and difficult to understand, and there is a problem that the usability is poor.

The present invention has been made in view of the above points, and not only the display content obtained by visible light transmitted through the display unit but also information of a fixed pattern such as characters and pictures on the display unit. It is an object of the present invention to provide a display device capable of displaying in color.

[0013]

A display device of the present invention is a display device for irradiating a visible light emitted from a built-in light source to a display portion and performing display with transmitted light obtained by the display portion. In addition to the light source, a light emitting lamp that emits only light having a specific wavelength is provided, and at least a part of the display unit emits a fluorescent color in response to a specific wavelength emitted from the light emitting lamp. It is formed by applying a pigment.

[0014]

In the display device of the present invention, not only can the display be performed by the light transmitted through the display portion by using the visible light source, but also the light having the specific wavelength emitted from the light emitting lamp can cause the fluorescent pigment to fluoresce. The color can be made to emit light to display information of a certain pattern on which the fluorescent pigment is applied.

[0015]

EXAMPLE A first example of the display device of the present invention will be described below.
For example, a display device for displaying an operation portion of a VTR (video tape recorder) will be described with reference to FIGS. 1 to 5, but the same reference numerals are used for the same portions as those in the conventional example, and the description thereof will be omitted.

Here, FIG. 1 is an explanatory perspective view showing the display device of the present embodiment, FIG. 2 is an exploded perspective explanatory view showing the display device of the present embodiment, and FIG. 3 is a normal view of the display device of the present embodiment. FIG. 4 is an explanatory side cross-sectional view, FIG. 4 is an explanatory side cross-sectional view illustrating the display device of the present embodiment when the switch is turned on, and FIG. 5 is an explanatory diagram illustrating an example of various mode displays in the display device of the present embodiment.

As shown in FIGS. 1 to 4, the display device of the present embodiment is different from the conventional display device described above with reference to FIGS. 10 to 12 in that the printed circuit board 4 has different specific wavelengths (for example, 300 nm). , 380 nm) for supporting the ultraviolet lamps 11 and 12 for emitting ultraviolet light, and supporting metal members 13 and 14 for supplying power, and further, the back surface of the display plate 3 (the side of the ultraviolet lamp).
The fluorescent pigments 15 and 16 which emit a fluorescent color in response to the ultraviolet light from the ultraviolet lamps 11 and 12 are directly printed on it.

The LED lamp 6a among the LED lamps 6 emits green light.
Reference numeral b is a two-color LED lamp that emits green and red light.

In the case of the display device constructed as described above, V
VTR when video tape (not shown) is inserted into TR
Is turned on. Here, if the recording prevention tab (not shown) of the video tape is broken, the playback mode is automatically entered, and even if the recording prevention tab (not shown) of the video tape is not broken, the play button is pressed. Press to enter playback mode.

At this time, the LED lamps 6a and 6b are turned on to rewind the display plate 3 as shown in FIG.
The display window located above the operation buttons for fast forward, stop, and pause / stop illuminates green. That is, it is displayed that the operation buttons for fast forward, stop, pause / stop are operable in the reproduction mode.

Next, when the stop button is pressed to bring it to a stopped state, the LED lamp 6 is turned off and the ultraviolet lamp 11 is turned on. As a result, the fluorescent pigment 15 printed on the display plate 3 is stimulated to develop color, so that the content (characters) on which the fluorescent pigment 15 is printed is displayed on the display plate 3 as shown in FIG. 5C. It will be displayed in blue. That is,
In the stopped state, it is displayed that the operation buttons for stop, pause / stop are changed to function buttons for channel up and channel down.

As described above, in the mode at the time of stop, the stop function and the stop and pause / stop functions are not required. Therefore, the stop, pause / stop operation buttons are used as channel up and channel down function buttons. By changing the number, it is possible to reduce the number of operation buttons. In addition, in such a case, since the stop display and the channel up display are double displayed in the related art, it is very difficult to understand at the time of operation, but only the current function is displayed on the display board 3. As a result, usability can be improved.

Further, when the recording button is pressed, the LED lamp 6b is turned on, and the display window located above the operation buttons for stopping, pausing / stopping the display board 3 is illuminated in red, and in the recording mode state, It is displayed that only the operation buttons for stop and pause / stop can be operated. (Fig. 5
(Refer to (b)) Further, there is a timer reservation function so that the user can record a TV program or the like by reservation even if the user does not operate it on the VTR side. Do not work. At this time, the ultraviolet lamp 12 is turned on, the fluorescent pigment 16 printed on the display plate 3 is stimulated to develop color, and the printed content of the fluorescent pigment 16 (timer reserved) is displayed. . (See FIG. 5 (d)) The fluorescent pigment is Y ₂ O ₂ S: Eu (red), Sr.
₅ (PO ₄ ) Cl: Eu (blue), Zn ₂ GeO ₄ : M
It can be formed by mixing materials including n (green). In addition, since the fluorescent pigment printed on the display plate 3 is transparent or has a color close to white and does not react with the light of the LED lamp 6, L
Even if the ED lamp 6 is turned on, printed characters are hardly visible.

In the first embodiment, LE is also used.
In addition to the display of the transmitted light (green and red) by the D lamp 6, the UV lamps 11 and 12 can be used to perform a two-color display, but as a second embodiment of the present invention, FIG. As shown in FIG. 6, the fluorescent pigment 2 that reacts to the light (wavelength around 360 nm) from the black light 21 on the display plate 3 using the black light 21.
5 may be printed and configured. Here, FIG. 6 is a side sectional explanatory view showing the display device of the present embodiment.

In this case, since there are basically about 15 colors that can be produced by the black light 21, it is possible to realize a wider variety of colors when displaying information of a fixed pattern such as characters and pictures.

Further, in the above-mentioned first and second embodiments, description has been made of the one in which a plurality of patterns of operation characters can be displayed in color on the display plate 3, but the operation buttons themselves display a plurality of patterns of operation characters in color. A third embodiment of the present invention will be described below with reference to FIGS. 7 and 8. The same parts as those of the above-mentioned conventional example are designated by the same reference numerals, and the description thereof will be omitted. Here, FIG. 7 is a side sectional explanatory view showing a normal time in the display device of the present embodiment, and FIG. 8 is a side sectional explanatory view showing a switch on time of the display device of the present embodiment.

As shown in FIGS. 7 and 8, the display device of the present embodiment has the structure of the conventional display device described above with reference to FIGS. 13 to 15, and the black light 31 which emits light having a wavelength of about 360 nm. Further, a fluorescent pigment 3 that emits a fluorescent color in response to light from the black light 31 is provided on the front surface or the back surface of the operation portion of the operation button 2.
5 is printed directly.

With the above configuration, the operation button 2 is operated by the light emitted from the black light 31.
Since the fluorescent pigment 35 printed on the sheet is stimulated to develop color, the content (constant pattern such as characters and pictures) on which the fluorescent pigment 35 is printed is displayed in color by the emitted light.

In the third embodiment described above, the fluorescent pigment 35 having a fixed pattern (operation characters) is directly printed on the operation portion of the operation button 2, but the fourth embodiment of the present invention is described. As shown in FIG. 9, a black light 41 may be used, and the operation button 2 may be formed by kneading a fluorescent pigment 45 that reacts with light from the black light 41 (wavelength around 360 nm). Here, FIG. 9 is a side sectional explanatory view showing the display device of the present embodiment.

In this case, when the backlight is not lit, one color is milky white, two colors are emitted by the LED lamp 6 that emits two colors, and one is emitted by the black light 41 when the backlight is off.
It is possible to perform multicolor display of a total of four colors. Also,
This is very effective for the operation button 2 having a limited color tone.

As described above, the first to fourth aspects of the present invention
In the embodiment, it is possible to reduce the number of operation buttons and easily display multifunctional display, and it is possible to greatly improve the usability of the device. Further, not only the function display but also the operation procedure can be applied, and the operation procedure can be displayed in an easy-to-understand manner for the operation of the electronic device which has a complicated procedure. Further, since the number of colors of colors can be increased, it is possible to realize various displays by changing the colors.

[0032]

Since the display device of the present invention is configured as described above, not only can the display be performed by the light transmitted through the display portion using the visible light source, but also the specific light emitted from the light emitting lamp can be displayed. The fluorescent pigment emits a fluorescent color by light having a wavelength, and information of a certain pattern coated with the fluorescent pigment can be displayed, and a plurality of information can be displayed at the same position.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view showing a first embodiment of a display device of the present invention.

FIG. 2 is an exploded perspective view showing the first embodiment of the display device of the present invention.

FIG. 3 is a side sectional explanatory view showing a normal time (switch-off) in the first embodiment of the display device of the present invention.

FIG. 4 is a side cross-sectional explanatory view showing a switch-on state in the first embodiment of the display device of the present invention.

FIG. 5 is an explanatory diagram showing an example of various mode displays in the first embodiment of the display device of the present invention.

FIG. 6 is a side cross-sectional explanatory view showing a second embodiment of the display device of the present invention.

FIG. 7 is a side sectional explanatory view showing a normal time (switch-off) in the third embodiment of the display device of the present invention.

FIG. 8 is a side cross-sectional explanatory view showing a switch-on state in the third embodiment of the display device of the present invention.

FIG. 9 is a side sectional explanatory view showing a fourth embodiment of the display device of the present invention.

FIG. 10 is a perspective explanatory view schematically showing a VTR using a conventional display device.

FIG. 11 is a side sectional explanatory view showing a normal time in the conventional display device.

FIG. 12 is an explanatory side cross-sectional view showing a conventional display device when the switch is turned on.

FIG. 13 is a perspective explanatory view showing an outline of a VTR using another conventional display device.

FIG. 14 is a side cross-sectional explanatory view showing a normal time in another conventional display device.

FIG. 15 is a side cross-sectional explanatory view showing another conventional display device when it is switched on.

[Explanation of symbols]

 1 Operation Front Panel 2 Operation Button 3 Display Board 4 Printed Circuit Board 5 Tact Switch 6 LED Lamp 11 UV Lamp 12 UV Lamp 15 Fluorescent Pigment 21 Blacklight 25 Fluorescent Pigment 31 Blacklight 35 Fluorescent Pigment 41 Blacklight 45 Fluorescent Pigment

Claims (4)

[Claims] 1. A display device for irradiating a visible light emitted from a built-in light source to a display unit and performing display by transmitted light obtained by the display unit, wherein the display device has a specific wavelength in addition to the light source. A display device provided with a light-emitting lamp that emits only light, and at least a part of the display unit is coated with a fluorescent pigment that emits a fluorescent color in response to a specific wavelength emitted from the light-emitting lamp. . 2. The display device according to claim 1, wherein the light emitting lamp is a black light which emits light having a wavelength of about 360 nm. 3. The display device according to claim 1, wherein the light emitting lamp is an ultraviolet lamp that emits light having a specific wavelength. 4. The display device according to claim 1, wherein the display unit is an operation button.