JPH10185630A - Display device for measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for measuring instrument having a display plate having a design variation while keeping a metallic tone. SOLUTION: A display board 4 has a colorless transparent surface layer 11 having hairlines on the surface of a light transmitting base 10, and a black display layer 12 forming a display part 2 such as scale, numerical number, character or the like provided on the surface layer 11. A half metallic film 14 (evaporated film of aluminum) forming a base color part 13 is provided on the reverse side of the base 10. A blue night display layer 20 forming a character, mark or pattern is provided on the lower side of the half metallic film 14 on the reverse side of the base 10, and an EL 3 surface-emitting a pale blue light is also provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument display device used for, for example, a vehicle instrument, and more particularly to an instrument display device having a metallic display panel and a three-dimensional display panel. is there.

[0002]

2. Description of the Related Art A translucent aluminum vapor-deposited film is formed on a transparent substrate for a display panel such as an instrument, and a transparent layer obtained by processing a hairline is provided on the aluminum vapor-deposited film, and characters and symbols are formed thereon. Printed and made into a metallic tone, for example,
It is described in 1-111401.

[0003]

However, in the above-mentioned prior art, although the display panel gives the impression that a metal plate such as aluminum is used, the display panel and the ground color portion are entirely flat in design. Display. The present invention has been made in view of such a point, and an object of the present invention is to provide a display device for an instrument provided with a display plate having a design change while maintaining a metallic tone.

[0004]

In order to solve the above-mentioned problems, the present invention comprises an instrument main body, a pointer which rotates according to the operation of the instrument main body, and a display plate provided on the front side of the instrument main body. An instrument display device, wherein the display plate is a colorless or colored transparent surface layer having fine irregularities on at least the entire display surface of the light-transmitting substrate surface, and a scale, numerals, In addition to providing a display layer serving as a display section for characters and the like, a half metal film serving as a ground color section is provided on at least the back surface of the substrate corresponding to the display surface.

Further, according to the present invention, an EL is provided on the back side of the display panel so that at least the display surface of the display panel can be transmitted and illuminated.

According to the present invention, a night display layer is provided below the half metal film on the substrate.

Further, in the present invention, the night display layer provided below the half metal film of the substrate has gradation.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS On the front side of a main body of a meter, a display board on which a display unit such as a scale, numerals, characters, etc. is printed, and a pointer which works with the main body of the meter are mounted above the display board. The display plate is provided with a transparent surface layer having a hairline on the surface of a substrate made of a colorless and transparent resin material, and a display layer serving as a display portion for scales, numerals, characters, etc. is provided on the transparent surface layer having the hairline. . And, the display panel of the instrument display device has a decorative appearance as if using an aluminum metal plate by providing an aluminum deposited film which is a half-colored metal film serving as a ground color portion on the back surface of the substrate. The display unit 2 formed on the front surface side of the substrate 10 rises above the vapor-deposited aluminum film provided on the back surface side of the substrate 10, so that the surface of the display plate 4 can be viewed three-dimensionally. Shadows are formed on the aluminum vapor deposition film, giving a three-dimensional effect to the scales, numbers, and characters.

[0009] Further, by providing the display surface with transmissive illumination on the back side of the display panel and providing an EL that emits light in a light blue color, the EL emits a light in a light blue color when the surroundings are dark, such as at night, and the aluminum is used. The ground color portion provided with the vapor-deposited film is uniformly transmitted through the entire surface in blue-green, which is a mixed color of EL emission color and aluminum color,
An instrument display with a display panel that is different in color from the daytime and that can be brightly and uniformly transmitted through the instrument body without being affected by the instrument body even if there is a display near the center of the instrument body. A device can be obtained.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on embodiments. FIG. 1 to FIG. 3 show an embodiment of the present invention. On the front side of an instrument main body 1 for a speedometer, display units 2 such as scales, numerals, and characters are printed on the front side, and EL3 is printed on the back side. Display board 4 printed with
Are tightened by screws 5, and a pointer 6 is attached above the display panel 4 to the rotating shaft of the instrument main body 1 and rotates according to the operation of the instrument main body 1. In addition, the instrument body 1
A printed board 7 provided with a circuit (not shown) for driving the meter main body 1 and the EL 3 is disposed on the bottom side of the box, and is stored and fixed in a case 8. Reference numeral 9 denotes a conductive wiring member for electrically connecting the EL to the printed board.

The display panel 4 is formed by hot stamping a transparent surface layer 11 provided with hairlines having fine irregularities on at least the entire display surface of the substrate 10 made of a colorless and transparent resin material. For example, a black display layer 12 serving as a display unit 2 for scales, numerals, characters, etc.
Is formed by printing. The fine unevenness is not limited to the hairline, but may be a satin pattern or the like.

A half metal film 14 serving as a ground color portion 13 is formed on at least the back surface of the substrate 10 corresponding to the display surface.
Is provided. The half-metallic film 14 has a half-mirror property and has a function of transmitting light and a function of reflecting light. It is preferable to provide a metal such as chromium other than aluminum by vacuum deposition, sputtering, or the like. An EL3 is provided below the aluminum deposition film. The EL3 is a translucent front electrode 1 formed by laminating sequentially at least on the display surface on the back side of the substrate 10 by printing.
5, light blue light emitting layer 16, insulating layer 17, rear electrode 18,
And a protective layer 19.

The display panel 4 of the instrument display device thus configured is provided with an aluminum vapor-deposited film which is a half-metallic film 14 serving as a ground color portion 13 on the back surface of the substrate 10 in the daytime. A decorative appearance can be exhibited as if an aluminum metal plate with a hairline was used, and the substrate 1 was placed above the aluminum deposition film provided on the back side of the substrate 10.
Since the display unit 2 formed on the surface side of the surface of the display unit 0 floats, the surface of the display plate 4 is visually recognized three-dimensionally, and at the same time, the shadow of the display unit 2 is formed on the aluminum vapor-deposited film. Comes out. Also, when the surroundings are dark, such as at night, the EL3 on the back surface of the display plate 4 electrically connected to the printed board 7 emits light blue light, so that the ground color portion 13 provided with the aluminum vapor-deposited film emits light of EL3. And a blue-green color that is a mixed color of aluminum and aluminum, and is transmitted uniformly over the entire surface, and a color completely different from that in daytime can be obtained. Further, even if the display unit 2 is located near the center of the instrument main body 1, the transmitted light can be brightly and uniformly transmitted without being affected by the instrument main body 1.

Also, for example, a blue night display layer 20 which becomes a character, a symbol, or a pattern which is transmitted at night in a portion under the aluminum vapor-deposited film where the display unit 2 near the center of the instrument main body 1 is not provided on the back surface of the substrate 10. Is provided so that characters, symbols, patterns, and the like, which are not visible in the daytime but appear at nighttime, can enhance the design effect at nighttime.

Further, the blue night display layer 20 provided on the back surface of the substrate 10 is gradually or densely changed from the center to the periphery of the instrument main body 1 or the size thereof is changed, for example, by a mesh. By printing the dot pattern, at nighttime, the emission of EL3 causes gradation in the blue-green ground color portion 13 due to the difference in emission density, and the display panel 4 can have a varied stereoscopic effect. . Since this gradation is not affected by the instrument body 1, it can be freely expressed at any position, and the night display layer 20 and the EL3
The display panel 4 can be provided with a different color and design change from that in the daytime depending on the combination of the light emission color and the color.

In the above embodiment, the structure is simplified by integrating the EL 3 with the display panel 4.
After the L3 is made of a separate member, it may be attached to the back side of the display panel 4. The method of electrically connecting the EL 3 and the printed circuit board 7 is not limited to the embodiment, and may be set as appropriate, such as by using a lead wire. The method of illuminating the hands 6 at night may be shining by the emission of the EL 3, an LED may be incorporated in the hands 6 to shine, or light passing through the ground portion 13 of the display panel 4. May be made visible, and the method is arbitrary.

Further, even if the surface layer 11 is not colorless and transparent,
For example, if the color is yellow and transparent with a hairline, the color is visually recognized as gold mixed with the aluminum color provided on the back surface of the substrate 10, and the display unit 2 is placed on the ground color of the gold with the hairline.
Is projected in three dimensions. The surface layer 11 may be colorless and transparent with a hairline, and a yellow transparent layer may be provided below the surface layer 11 by printing or the like to make the ground color portion 13 look like gold with a hairline.

[0018]

The display panel of the instrument display device thus constructed can exhibit a decorative aesthetic appearance in the daytime as if a metal plate having fine irregularities is used, and is provided on the back side of the substrate. Since the display portion formed on the front surface side of the substrate rises above the provided half-metal film, the surface of the display plate is three-dimensionally visually recognized, and at the same time, the shadow of this display portion can be formed on the half-metal film, so that the scales and numerals are displayed. , Letters and the like have a three-dimensional effect. In addition, by providing an EL on the back side of the display panel so that at least the display surface of the display panel can be transmitted and illuminated, the ground color portion of the display panel at night is completely different in color tone from that at daytime, and the whole is Since it can be transmitted uniformly, its color effect is large, and even if there is a display near the center of the instrument main body, it is a display for instruments that can be brightly and uniformly transmitted and illuminated without being affected by the instrument main body. A device can be obtained. Also, characters, symbols, patterns, and the like (night display layer) that are not visually recognized during the daytime but appear at night can be provided in a portion without a display portion and can be transmitted brightly.
The design effect at night can be enhanced. In addition, by making the nighttime display layer a gradation, a three-dimensional appearance can be given to the display panel, and an instrument display device having a different color and design change from that in the daytime can be obtained.

[Brief description of the drawings]

FIG. 1 is an assembled configuration diagram of a display device for an instrument showing an embodiment of the present invention.

FIG. 2 is a plan view of the display device for an instrument showing the embodiment.

FIG. 3 is a partial cross-sectional view of the display panel showing the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Display part 3 EL4 Display board 6 Pointer 10 Substrate 11 Surface layer 12 Display layer 13 Background color part 14 Half metal film (aluminum vapor deposition film) 20 Night display layer

Claims (4)

[Claims] 1. A display device for an instrument, comprising: an instrument main body; a pointer which rotates in accordance with the operation of the instrument main body; and a display panel provided on a front side of the instrument main body. At least on the entire display surface of the transparent substrate surface, a colorless or colored transparent surface layer having fine irregularities, and graduations, numerals, and a display layer serving as a display portion for characters and the like are provided on the surface layer, A display device for an instrument, wherein a half-metallic film serving as a ground color portion is provided on at least a back surface of a substrate corresponding to the display surface. 2. The display device for an instrument according to claim 1, wherein an EL is provided on a rear surface side of the display plate so that at least a display surface of the display plate can be transmitted and illuminated. 3. The instrument display device according to claim 2, wherein a night display layer is provided below the half metal film of the substrate. 4. The instrument display device according to claim 3, wherein the nighttime display layer provided under the half-metallic film of the substrate is a gradation.