JPH09138661A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device having an up-scale image from a design viewpoint and provided with a character plate capable of contributing to a safety driving or the like by making a prescribed warning display so as not to be even vaguely viewed from a driver except at the time of a warning, that is, except at the time of a necessary time. SOLUTION: The translucent layer of dark color 10 is formed on the surface of a substrate 6 being a part on which a warning display 4 is to be formed and the translucent of black color 11 absorbing the light to be irradiated from the inner side of the substrate 6 and reducing the light quantity of the light to be reflected to the inner side of the substrate 6 by the surface part of the surroundings of the translucent layer of dark color 10 is directly formed at the surface part of the surroundings of the translucent layer of dark color 10 on the surface of the substrate 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly to a display device suitable for automobile meters and the like.

[0002]

2. Description of the Related Art Conventionally, on an instrument panel of a vehicle, a meter as a display device is provided with various instruments such as a speedometer for displaying the speed of the vehicle and a tachometer for displaying the number of revolutions of an engine. Is provided.

FIGS. 4 to 6 show a tachometer portion of a conventional automotive meter. The dial 1 arranged on the front side of a meter case (not shown) has a front view as shown in FIG. In addition, a predetermined scale, a character 2 and the like are formed on the surface thereof, and an instrument unit (not shown) is fixed to the rear side of the dial 1, and further the front side of the dial 1 is attached. Is provided with a pointer 3 driven by the instrument unit.

A light bulb (not shown) for illumination is disposed on the rear side of the meter case, and the light of this bulb is emitted from the rear side of the dial 1 at night. The light is transmitted through the dial 1 so that the scale, the character 2 and the like can be visually recognized.

Further, on the front surface of the dial 1, there are formed character and graphic warning displays 4 for displaying various warnings and the like, and on the back side of the dial 1 corresponding to the warning display 4 portion. As shown in the cross-sectional view taken along the line BB in FIG. 5, the light is turned on when the warning state is set, and the predetermined warning display 4 is made visible to the driver by the light passing through the warning display 4 portion. A warning display light bulb 5 is provided.

In such a meter, the dial 1
As shown in the cross-sectional view of the main part in FIG. 6, a semi-transparent layer 7 of a bright color such as white as the background color of the scales and letters 2 is formed on the surface of the transparent substrate 6 such as a synthetic resin. And the warning display color layer 8 such as red is printed on the back surface of the base material 6 at the portion where the warning display 4 is to be formed.

Further, on the surface of the base material 6 on which the white semi-transparent layer 7 and the warning display color layer 8 are printed, except for the scale, the characters 2 and the warning display 4, the dark opaque color such as black is provided. It is adapted to form a layer 9 by printing, whereby
A scale, a character 2, a warning display 4 and the like are formed on the surface of the dial 1 without a symbol. Then, at night or the like, the scale, the character 2, etc. can be visually recognized by the light of the lighting bulb, and at the time of warning, the warning display 4 can be visually recognized in a predetermined warning color by turning on the warning display bulb 5. It has become.

[0008]

Therefore, in a conventional vehicle instrument, even if an anti-reflection film is formed on the front cover, the light applied thereto is completely prevented from being reflected over the entire wavelength range. It is practically impossible, and in some wavelength regions, light is reflected to the driver side.

However, in the above conventional display device,
Since the base material 6 is configured as a transparent plate, when the surroundings are bright such as during the daytime, even though the warning state is not generated,
That is, there is a problem that the warning display 4 can be visually recognized even though the warning display light bulb 5 is not lit, and the warning light 4 is not in a warning state due to light passing through the base material 6 even at night illumination. Nevertheless, there is a problem that the above-mentioned warning display 4 dimly shines and can be visually recognized. Then, since the unnecessary warning display 4 is visually recognized even though it is not actually in the warning state, the driver feels complicated in terms of design, and the driver cannot concentrate on driving. Have

The present invention has been made in view of the above-mentioned points, and a predetermined warning display is made invisible to the driver even when a warning is given, that is, except when it is necessary, even if the driver is indistinct. It is an object of the present invention to provide a display device having a dial that has a high-class feel and can contribute to safe driving and the like.

[0011]

In order to achieve the above object, the display device of the present invention according to claim 1 forms a warning color printing layer as a warning display color on the back surface of a transparent substrate. At the same time, on the surface of the base material, an antiglare mask printing layer formed of a dark-colored semitransparent layer is disposed so as to face the warning color printing layer, and light is located around the antiglare mask printing layer. A first layer having a white semi-transparent layer for exposing the warning color printing layer to form a warning display, and a scale display for exposing the white semi-transparent layer to form a scale and letters. A second layer having a slit for use and shielding the light emitted from the first layer side is provided on the first layer, and a dial is provided on the back side of the dial. A light bulb is installed, and the warning display and the scale are displayed by the light from this light bulb. In a display device for performing transillumination with a character, at the first layer portion of the boundary between the antiglare mask printing layer and the white semi-transparent layer in the first layer, and at the first layer portion, the inner side of the base material. A black printing layer that absorbs light emitted from the second layer and reduces the amount of light reflected to the inside of the base material by the first layer portion.
It is characterized in that it is arranged in the first layer portion covered with the second layer portion excluding the warning display slit and the scale display slit in the layer.

Further, in the display device of the present invention as defined in claim 2, the light irradiated from the inner side of the base material to the back surface portion of the base material around the warning color printing layer on the back surface of the base material. And a second black printing layer that reduces the amount of light reflected by the back surface of the base material to the inside of the base material.

According to the display device of the present invention as set forth in claim 1, the black printing layer arranged in the first layer portion covered by the second layer portion excluding the warning display slit and the scale display slit, The black printed layer absorbs the light that is guided through the inside of the substrate due to the reflection at the interface between the front surface of the substrate and the white semi-transparent layer and the light reflected at the back surface of the substrate. Since the amount of light reflected to the inner side of the substrate is reduced, the amount of light reflected to the inner side of the substrate by the black printing layer and traveling toward the warning color printing layer is smaller than that of the black printing layer.

Therefore, the light amount of the light illuminating the warning display portion through the inside of the base material toward the warning display portion decreases, and the reduction of the light amount results in a non-warning state, that is, a warning display. If the light bulb for is not lit, the above warning display will not be visible, so that the predetermined warning display is not visible except when necessary, and the design is complicated. It is possible to obtain a high-quality dial that is not given.

According to the display device of the present invention as defined in claim 2, the second black printing layer provided on the back surface of the base material around the warning color printing layer on the back surface of the base material is the base material. The light that is guided through the base material by the reflection at the interface between the front surface of the substrate and the white semi-transparent layer and the back surface of the base material and that is radiated to the second black printed layer is absorbed. The black printing layer reduces the amount of light reflected to the inner side of the base material, so the light that is reflected from the surface of the base material to the inner side by the black printing layer and travels toward the warning color printing layer side from this black printing layer. The amount of light reflected by the second black print layer from the back surface of the base material toward the inside is reduced and the amount of light directed toward the warning color print layer from the second black print layer is also reduced.

Therefore, the light amount of the light passing through the inside of the base material toward the warning display portion and illuminating the warning display portion is reflected from the surface of the base material to the inside by the presence of the black print layer. Not only the light but also the light reflected from the back surface of the base material to the inner side is reduced due to the presence of the second black print layer. Therefore, it is possible to prevent the predetermined warning display from being visible except when necessary. It becomes possible to make it more remarkable.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. 1 to 3, and the same parts as those in the conventional art will be designated by the same reference numerals.

1 (a) and 1 (b) are a front view and a sectional view taken along the line AA of the main part of a dial according to a first embodiment of the present invention used in a vehicle meter. As shown in b), red or the like is formed on the back surface of the transparent base material 6 such as synthetic resin forming the dial 1 at a portion where the predetermined warning display 4 shown in FIG. The warning display color layer 8 (corresponding to the warning color print layer) is formed by printing.

Further, on the surface of the substrate 6, a dark semi-transparent layer 10 (prevention layer) for smoke clear printing or the like whose printing range is slightly narrower than that of the warning display color layer 8 is provided at a portion corresponding to the warning display color layer 8. (Corresponding to the glare mask print layer) is formed by printing, and the dark color semitransparent layer 10 is formed on the surface of the base material 6.
A light absorbing layer 11 (corresponding to a black printing layer) of black or the like is directly printed and formed as an outer frame portion on the surface portion of the base material 6 around the area.

On the surface of the substrate 6, the dark-colored semi-transparent layer 1
0 and the surface portion of the base material 6 around the black light absorption layer 11,
A semi-transparent layer 7 (hereinafter referred to as a white semi-transparent layer) of a bright color such as white as a background color of the scales and characters 2 is formed by printing, and the white semi-transparent layer 7 is the black light absorbing layer 11 It extends to cover the top. In the present embodiment, the dark-color semitransparent layer 10, the black light absorbing layer 11, and the white semitransparent layer 7 constitute the first layer described in the claims.

Further, on the white semi-transparent layer 7 and the dark semi-transparent layer 10, an opaque layer 9 (corresponding to a second layer) of a dark color such as black is formed by printing. 9 opaque layers on which the scale and characters 2 are formed are provided with graduation display slits 9a having a shape corresponding to the scales and characters 2, and the warning display 4 is formed on the opaque layer 9. A warning display slit 9b having a shape corresponding to the warning display 4 is formed on the. As a result, the scale, characters 2, warning display 4 and the like are formed on the surface of the dial 1 without symbols.

In the present embodiment, at night or the like, light is emitted from a lighting bulb (not shown), and the light is incident on the base material 6 from the back surface side. The scale display slit 9a is guided while being guided inside the base material 6 by reflection at the interface with the transparent layer 7 and reflection on the back surface of the base material 6.
By reaching the white semitransparent layer 7 where the mark is formed and transmitting it, and radiating to the outside of the opaque layer 9 through the scale display slit 9a, that is, transmitting the entire dial 1, The scale and the letter 2 are visible.

Further, in this embodiment, at the time of warning,
When a warning light bulb (not shown) is turned on, the light passes through the warning display color layer 8, the base material 6, and the dark semi-transparent layer 10,
Further, the warning display 4 can be visually recognized in a predetermined warning color by being emitted to the outside of the opaque layer 9 through the warning display slit 9b, that is, by transmitting the entire dial 1.

Therefore, in this embodiment, since the dark-colored semitransparent layer 10 is formed on the surface of the base material 6 where the warning display 4 is to be formed, the warning state must be maintained when the surroundings are bright such as during the daytime. In other words, if the warning display bulb is not lit, the warning display 4 will not be visually recognized by the driver due to the attenuation of light when passing through the dark translucent layer 10.

Further, since the black light absorbing layer 11 is directly formed on the surface of the substrate 6 around the dark semi-transparent layer 10, the lighting bulb (not shown) is turned on at night to turn the scale. While illuminating the character 2 and the like, as shown by the solid line in FIG. 1B, the light is guided inside the base material 6 while being reflected by the white semitransparent layer 7 on the surface of the base material 6. When the black light absorption layer 11 is irradiated with the above-described illumination light, the black light absorption layer 11 absorbs the illumination light and the black light absorption layer 11 is absorbed by the black light absorption layer 11 as shown by a broken line in FIG. The amount of light reflected by the interface between the base material 6 and the base material 6 and directed toward the inside of the base material 6 is reduced.

Therefore, the light is reflected by the black light absorbing layer 11 toward the inside of the substrate 6, that is, the warning display 4 portion inside the black light absorbing layer 11, and by extension, the above-mentioned illumination for illuminating the warning display 4 portion. It is possible to reduce the amount of light that works as light, so that the warning display 4 will not dimly and visually be recognized even if the warning state is not obtained at night illumination.

As a result, the driver is not given a complicated design feeling, and the dial 1 having a high-class design feeling can be obtained. Further, since the warning display 4 can be confirmed visually only when necessary, that is, only when a warning is issued, the driver can visually recognize only the necessary display information, and concentrate on driving to perform safe driving. can do.

FIG. 2 is a lateral cross-sectional view of a main part of a dial according to a second embodiment of the present invention used in a meter for automobiles, in which a predetermined warning display 4 is formed on the back surface of a base material 6. A warning display color layer 8 such as red is printed and formed on the portion to be marked. The warning display color layer 8 is formed on the surface of the base material 6.
A dark semi-transparent layer 10 such as smoke clear printing having a printing range slightly wider than that of the warning display color layer 8 is formed by printing on the portion corresponding to, and the dark semi-transparent layer 10 is formed on the surface of the base material 6. An opaque layer 11 of black or the like is directly printed and formed as an outer frame portion on the surface portion of the base material 6 around the.

The dark semi-transparent layer 1 is formed on the surface of the substrate 6.
0 and a black semi-transparent layer 7 is printed on the surface of the base material 6 around the black light absorbing layer 11. The white semi-transparent layer 7 and the dark semi-transparent layer 10 are provided with a scale display slit 9
An opaque layer 9 having a and a warning display slit 9b is formed by printing, so that a scale, a character 2, a warning display 4 and the like are formed without symbols on the surface of the dial 1. Has become. Note that, also in the present embodiment, as in the first embodiment, the dark-colored semitransparent layer 1 is used.
0, the black light absorbing layer 11, and the white semi-transparent layer 7
The first layer described in the claims is constituted.

Therefore, also in this embodiment, the black light absorbing layer 11 formed directly on the surface of the base material 6 around the dark semi-transparent layer 10 passes through the inside of the base material 6 toward the warning display 4 portion, As a result, the amount of light that works as illumination light for illuminating the warning display 4 portion is reduced, so that the warning display 4 is not visually recognized by the driver except when necessary.

Further, in comparison with the above-mentioned first embodiment,
The white semitransparent layer 7 is printed on the surface of the base material 6 around the black light absorbing layer 11 without printing the white semitransparent layer 7 on the black light absorbing layer 11 as an outer frame portion of the dark color semitransparent layer 10. Base material 6
Instead of forming on the surface portion, the black opaque layer 9 is printed over the entire white semitransparent layer 7 and the black light absorbing layer 11 and the peripheral portion of the dark semitransparent layer 10 near the black light absorbing layer 11. Therefore, it is possible to prevent a step due to overprinting from being formed on the surface of the dial 1, and it is possible to obtain the dial 1 which is preferable in terms of design.

FIG. 3 is a transverse cross-sectional view of the main part of a dial according to a third embodiment of the present invention used in a meter for automobiles, in which a predetermined warning display 4 is formed on the back surface of the base material 6. A warning display color layer 8 of red or the like is printed and formed on the portion to be covered, and the back surface of the base material 6 around the warning display color layer 8 is covered with the outside of the warning display color layer 8. A second light absorbing layer 13 of black color or the like (corresponding to a second black print layer) is formed by printing as a frame portion. On the surface of the base material 6, a dark semi-transparent layer 10 such as smoke clear printing, which has a slightly wider printing range than the warning display color layer 8, is formed by printing at a portion corresponding to the warning display color layer 8. And further the above-mentioned base material 6
An opaque layer 11 of black or the like is directly printed and formed as an outer frame portion on the surface portion of the substrate 6 around the dark-colored semitransparent layer 10 on the surface.

On the surface of the substrate 6, the dark-colored semi-transparent layer 1
0 and a black semi-transparent layer 7 is printed on the surface of the base material 6 around the black light absorbing layer 11. The white semi-transparent layer 7 and the dark semi-transparent layer 10 are provided with a scale display slit 9
An opaque layer 9 having a and a warning display slit 9b is formed by printing, so that a scale, a character 2, a warning display 4 and the like are formed without symbols on the surface of the dial 1. Has become. In the present embodiment as well, similar to the first and second embodiments, the dark semi-transparent layer 10, the black light absorbing layer 11, and the white semi-transparent layer 7 provide the first described in the claims. The layers are made up.

Therefore, in the present embodiment, in addition to the black light absorbing layer 11 formed directly on the surface of the base material 6 around the dark semi-transparent layer 10, the back surface of the base material 6 around the warning display color layer 8 is added. By the second black light absorption layer 13 formed directly on
It is necessary because the amount of light that passes through the inside of the base material 6 toward the warning display 4 portion and further acts as illumination light for illuminating the warning display 4 portion is further reduced as compared with the case of the black light absorbing layer 11 alone. It is certain that the warning display 4 will not be visually recognized by the driver except in such cases.

As described above, in each of the above-mentioned embodiments,
In common, the black light absorption layer 11 is provided on the surface of the base material 6 around the dark-colored semitransparent layer 10 on the surface of the base material 6, and on the portion other than the scale display slit 9a and the warning display slit 9b. It is characterized in that it is formed so as to be covered with an opaque layer 9 that shields light from the base material 6 side.

That is, the opaque layer 9 is formed on the surface of the base material 6 around the dark semi-transparent layer 10, which is the surface portion of the base material 6 where the light shielding to the outside of the dial 1 is already secured. The black light absorption layer 11 thus absorbed absorbs the light emitted from the inner side of the base material 6 and is reflected at the interface between the black light absorption layer 11 and the base material 6, as described in each of the above embodiments. Then, the light amount of the light acting as the illuminating light for illuminating the warning display 4 portion on the inner side of the base material 6, that is, the inside of the black light absorbing layer 11 is reduced. Therefore, at night illumination of the scale and the character 2, it is possible to surely prevent the warning display 4 from being dimly illuminated and visually recognized even though it is not in the warning state.

In each of the above-mentioned embodiments, the automobile meter has been described as the display device, but the present invention is not limited to this, and the present invention can be applied to display devices of various instruments. . Further, as means for forming the scale, the character 2, the warning display 4, etc. on the surface of the dial 1, so-called symbol-excluding printing in which the black opaque layer 9 is printed on a portion other than the scale, the character 2, the warning display 4, etc. is used. However, instead of this, the black opaque layer 9 may be printed only on the scale, the character 2, the warning display 4, and the like.

[0038]

As described above, according to the display device of the present invention described in claim 1, the warning color printing layer as a warning display color is formed on the back surface of the translucent substrate, and On the surface of the substrate, an anti-glare mask printing layer composed of a dark semi-transparent layer and facing the above warning color printing layer, and a white semi-circle located around this anti-glare mask printing layer and reflecting light. A warning display slit for forming a first layer having a transparent layer, exposing the warning color printing layer to form a warning display, and a scale display slit for exposing the white semi-transparent layer to form a scale or a letter. And a second plate that shields the light emitted from the first layer side and is formed by stacking the second layer on the first layer, and the lighting bulb is provided on the back side of the second plate. It is installed and the light from this bulb allows the warning display, the scale and letters to be transparent. In a display device that illuminates, the first layer is irradiated from the inside of the base material to the first layer portion of the boundary between the antiglare mask printing layer and the white semitransparent layer in the first layer. A black printing layer that absorbs light and reduces the amount of light reflected by the first layer portion to the inside of the substrate is provided, and the black printing layer is the second layer and the warning display slit and the Second excluding graduation display slit
The first layer portion covered with the layer portion is arranged.

Therefore, the black print layer disposed in the first layer portion covered by the second layer portion excluding the warning display slit and the scale display slit is the interface between the surface of the base material and the white semitransparent layer. Absorbs the light that is guided through the base material and reflected on the back surface of the base material to illuminate the black print layer,
The black printing layer reduces the amount of light reflected to the inner side of the substrate, so that the black printing layer reflects the light to the inner side of the substrate and moves toward the warning color printing layer side of the black printing layer. The amount of light decreases.

Therefore, the light quantity of the light illuminating the warning display portion passing through the inside of the base material to the warning display portion is reduced, and due to the decrease of the light quantity, it is not a warning state, that is, the warning display. If the light bulb for is not lit, the above warning display will not be visible, so that the predetermined warning display is not visible except when necessary, and the design is complicated. It is possible to obtain a high-quality dial that is not given.

According to the display device of the present invention as set forth in claim 2, the back surface of the base material around the warning color printing layer is irradiated from the inside of the base material on the back surface of the base material. The second black print layer is provided to absorb the light emitted from the back surface of the base material and reduce the amount of the light reflected by the back surface of the base material to the inside of the base material.

Therefore, the second black printing layer provided on the back surface of the base material around the warning color printing layer on the back surface of the base material causes reflection or reflection at the interface between the front surface of the base material and the white translucent layer. , Light that is guided inside the base material by reflection on the back surface of the base material and that is absorbed by the second black printed layer, and is reflected by the second black printed layer to the inside of the base material. Decrease the light intensity of
The black printing layer reduces the amount of light that is reflected from the front surface of the base material toward the inside and travels toward the warning color printing layer side from this black printing layer, and the second black printing layer allows the back surface of the base material to reach the inside side. The amount of light reflected toward the warning color print layer side of the second black print layer is reduced.

Therefore, the light amount of the light passing through the inside of the base material toward the warning display portion and illuminating the warning display portion is reflected from the surface of the base material to the inside by the presence of the black print layer. Not only the light but also the light reflected from the back surface of the base material to the inner side is reduced due to the presence of the second black print layer. Therefore, it is possible to prevent the predetermined warning display from being visible except when necessary. It can be made more remarkable.

[Brief description of the drawings]

FIG. 1 (a) is a front view of a main part of a dial according to a first embodiment of the present invention, and FIG. 1 (b) is a sectional view taken along the line AA of FIG. 1 (a).

FIG. 2 is a lateral cross-sectional view of a main part of a dial according to a second embodiment of the present invention.

FIG. 3 is a transverse cross-sectional view of a main part of a dial according to a third embodiment of the present invention.

FIG. 4 is a front view of a tachometer portion of a conventional automotive meter.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

6 is a transverse cross-sectional view of a main part of a vehicle instrument of the tachometer portion of the automobile meter shown in FIG.

[Explanation of symbols]

 6 Base Material 7 White Semi-Transparent Layer (First Layer) 8 Warning Display Color Layer (Warning Color Print Layer) 9 Opaque Layer (Second Layer) 9a Scale Display Slit 9b Warning Display Slit 10 Dark Semi-Transparent Layer (Anti-Glare) Mask printing layer, first layer) 11 Black light absorbing layer (black printing layer, first layer) 13 Second black light absorbing layer (second black printing layer)

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area B60Q 3/04 B60Q 3/04 Z

Claims (2)

[Claims] 1. A warning color printing layer as a warning display color is formed on the back surface of a light-transmissive base material, and a dark half-colored film is located on the front surface of the base material so as to face the warning color printing layer. A first layer having a transparent anti-glare mask print layer and a white semi-transparent layer which is located around the anti-glare mask print layer and reflects light is formed to expose the warning color print layer. A second layer that has a warning display slit that forms a warning display and a scale display slit that exposes the white semitransparent layer and forms a scale and letters, and that shields the light emitted from the first layer side. Is provided on the first layer, and a dial for illumination is provided on the back side of the dial, and the warning display, the scale, and the letters are displayed by the light from the bulb. In the display device for performing transillumination, the antiglare mask printing is performed on the first layer. And the white semi-transparent layer at the boundary between the first layer and the first layer where the light emitted from the inside of the substrate is absorbed, and the first layer is reflected at the inside of the substrate. A black printed layer for reducing the amount of light to be emitted, and the black printed layer is formed on the first layer portion covered by the second layer portion excluding the warning display slit and the scale display slit in the second layer. Arranged display device. 2. The back surface of the base material around the warning color printing layer on the back surface of the base material absorbs light emitted from the inner side of the base material, and the back surface part of the base material allows The display device according to claim 1, further comprising a second black printed layer that reduces the amount of light reflected toward the inside.