JP2010117713A - Information display switching panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information display switching panel that switches a pattern such as a character or a diagram with lighting or extinction of a light source and displays the chromatic color of the pattern. <P>SOLUTION: This information display switching panel includes a semi-transparent substrate, a first pattern layer formed on one surface of the semi-transparent substrate, and a second pattern layer formed on the other surface of the semi-transparent substrate. The difference between lightnesses L* of corresponding parts of the first pattern layer and the second pattern layer is 50 or more. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an information display switching panel in which a picture is switched by turning on and off a light source such as a backlight, and relates to an information display switching panel suitably used for an instrument panel such as an instrument panel of an automobile.

  As an information display panel for switching a conventional pattern, white translucent ink is applied to a position corresponding to a pattern portion on one surface of a translucent substrate, and black is surrounded around the white translucent ink. Opaque ink is applied. A chromatic translucent ink is applied at a position corresponding to the pattern on the other surface of the substrate. In addition, a lattice pattern is printed by printing other than the chromatic color translucent ink portion.

  By using the configuration of the information display panel described above, when the lamp is turned off, the pattern portion is visually recognized as white by the white translucent ink and the ground color portion other than the pattern portion is visually recognized as black due to external light. When the lamp is lit, light is irradiated from the back side, so that the pattern portion is visually recognized as chromatic color by the light transmitted through the chromatic translucent ink, and a chromatic lattice pattern appears. (See Patent Document 1)

  However, in the prior art, when the back lamp is not lit, it remains plain, and a chromatic pattern cannot be displayed beautifully.

Japanese Utility Model Publication No. 5-64727

  It is an object of the present invention to provide an information display switching panel capable of switching a picture such as a character and a figure by turning on and off the light source and beautifully displaying the chromatic color of the picture.

The present invention has the following configuration in order to solve the above problems.
The invention according to claim 1 is a semi-permeable substrate;
A first pattern layer formed on one side of the semi-transmissive substrate;
A second pattern layer formed on the other surface of the translucent substrate,
The information display switching panel, wherein a difference in brightness L ^* between corresponding portions of the first picture layer and the second picture layer is 50 or more.

The invention according to claim 2 is a semi-permeable substrate,
A second picture layer formed on one side of the semi-permeable substrate;
A concealing layer formed on the second picture layer;
A first pattern layer formed on the concealing layer,
The information display switching panel, wherein a difference in brightness L ^* between corresponding portions of the first picture layer and the second picture layer is 50 or more.

The invention according to claim 3 is the information display switching panel according to claim 1, wherein the semipermeable base material is foamed polypropylene.

  According to the first and second aspects of the present invention, when the pattern is switched by turning on and off the light source, an effect of beautifully displaying the chromatic color of the pattern is produced.

  According to the third aspect of the invention, by using foamed polypropylene as the semi-permeable base material, the printability can be improved, so that characters, figures, etc. can be printed beautifully and discarded and burned. The effect that the environmental load at the time is small occurs.

It is sectional drawing which shows the layer structure of one Embodiment of the information display switching panel of this invention. It is sectional drawing which shows the layer structure of another one Embodiment of the information display switching panel of this invention.

Exemplary embodiments of an information display switching panel according to the present invention will be described below in detail with reference to the drawings.
In FIG. 1, a first picture layer 2 is formed on one side of a semi-transmissive substrate 1, and a second picture layer 3 is formed on the other side of the semi-transmissive base 1.

The semipermeable substrate 1 is not particularly limited, and a general semipermeable substrate 1 can be used.
In the present invention, foamed polypropylene (trade name RMM400; YUPO Corporation) was used as the semipermeable substrate 1 with a plate thickness of 400 μm.

Here, the reason why the thickness of the translucent substrate 1 is 400 μm is that the degree of transmission of the pattern and the degree of blur of the pattern shown in Table 1 are taken into consideration.

Table 1 shows a book made by changing only the thickness of the semi-transparent substrate 1 on the diffusion plate placed at a distance of 3 cm from the LED light source 4 of 1,000 cd / m ² (other conditions are the same). The information display switching panel of the invention was placed and the LED light source 4 was turned on to confirm the appearance.

Here, the degree of transmission of the pattern will be described.
When the light source 4 is turned on, when the translucent base material 1 is observed from the observer 5 side, the degree of transmission of the pattern of the second pattern layer 3 on the light source 4 side is shown. It is better that the pattern of the second pattern layer 3 looks brighter (that is, the amount of transmitted light is larger).

The degree of blur will be described.
This shows the degree to which the pattern of the second pattern layer 3 is blurred when the translucent substrate 1 is observed from the viewer 5 side when the light source is turned on. It is better that the pattern of the second pattern layer 3 is clear.

The first pattern layer 2 will be described.
The pattern layer is a layer in which figures, characters, etc. are drawn with ink.

As the ink used in the first picture layer 2, ink generally used for printing can be used.
As a method for forming the first picture layer 2, letterpress printing, flexographic printing, offset printing, silk printing, gravure printing, ink jet printing, and the like can be used, but in order to reduce the thickness of the picture layer 2, other than screen printing. It is more preferable to form by this method. By reducing the layer thickness, it is possible to make it difficult to prevent the transmission of light from the back side. In addition to single color printing, it is also possible to perform multicolor printing using a plurality of colors of ink.

  In the information display switching panel of the present invention, the first pattern layer 2 uses an offset printing ink (TK High Unity Neo; manufactured by Toyo Ink) on one side of the foamed polypropylene which is the semi-transparent substrate 1. And formed by offset printing.

  The second pattern layer 3 can use the same ink and formation method as the first pattern layer 2 described above. If the graphic or character drawn on the first pattern layer 2 and the graphic or character drawn on the second pattern layer 3 are in the same position, the graphic or character drawn on both pattern layers And the like can always be observed regardless of the switching described later.

In addition, by drawing different figures, characters, and the like at different positions in the first picture layer 2 and the second picture layer 3, the pattern to be observed changes at the time of switching described later.
In the present invention, the second pattern layer 2 is formed by offset printing on the other surface of the foamed polypropylene that is the semi-transparent substrate 1 by using an offset printing ink (TK High Unity Neo; manufactured by Toyo Ink). did.

It will be described that the first picture layer 2 and the second picture layer 3 are switched by turning on and off the LED light source 4 on the other side of the semi-transmissive substrate 1.
When the LED light source 4 is turned off, the first picture layer 2 can be seen from the viewer 5 side. At this time, the second pattern layer 3 cannot be seen by the semi-transmissive substrate 1.

When the LED light source 4 is turned on, the second picture layer 3 can be seen from the observer 5 side. In that case, the pattern of the 2nd pattern layer 3 permeate | transmits the semi-permeable base material 1 with the light of the LED light source 4, and the 2nd pattern layer 3 is observed through the 1st pattern layer 2. . Here, since the observer observes an image in a state where the first pattern layer 2 and the second pattern layer 3 are mixed, in order to show the image clearly even in this state, the first pattern layer 2 is used. Is higher than the brightness of the second pattern layer 3, and the difference in the brightness L ^* of the pattern layer is preferably 50 or more.

The difference in the lightness L ^{* is} a lightness difference in the L ^* a ^* b ^* color system of the corresponding parts of the first picture layer 2 and the second picture layer 3. That is, when the information display switching panel is observed, the first pattern layer 2 and the second pattern layer 3 overlap each other, and either of them is observed by turning on / off the LED light source 4. It is the difference in lightness of the overlapping part.

The brightness L ^* of the first picture layer 2 and the second picture layer 3 is measured by the following procedure. A plurality of samples in which only the first pattern layer 2 is formed on one side of the semi-transparent substrate 1 by changing the printing conditions little by little, and only the second pattern layer 3 is formed on one side of the semi-transparent substrate 1 A plurality of samples formed by changing little by little are prepared. The surface of each sample on which the pattern layer is formed is measured by a reflection method using a light source of a spectrocolorimeter (for example, model HSC-1; manufactured by Suga Test Instruments Co., Ltd.). ^* Ask for. The brightness difference is obtained from the brightness L ^{* of} the first picture layer 2 and the second picture layer 3 obtained in this way.

As described above, the transmission degree of the second picture layer 3 is affected by the thickness of the semi-transmissive substrate 1.
Considering the results shown in Table 2, if the difference in the lightness L ^* of the pattern layer is 50 or more, it can be clearly displayed even after color mixing.

Table 2 shows the difference between the lightness L ^* of the first picture layer 2 and the second picture layer 3 on the diffusion plate placed at a distance of 3 cm from the LED light source 4 of 1,000 cd / m ^2. The manufactured information display switching panel of the present invention is placed (the other conditions are the same), the LED light source 4 is turned on, and the appearance is evaluated. In addition, the information display switching panel whose appearance was evaluated in Table 2 has a brightness difference of 25, 50 between the first picture layer 2 and the second picture layer 3 according to the measurement method of the brightness L ^* of each picture layer described above. A combination of printing conditions for each pattern layer such as 75 and 100 is obtained, and the first pattern layer 2 is provided on one side of the translucent substrate 1 and the second pattern layer 3 is provided on the other side. It is formed by a combination of the printing conditions.
The expression ability of the second pattern layer 3 is an evaluation of the degree to which the second pattern layer 3 is clearly displayed in five stages of 1 to 5.

Therefore, the information display switching panel of the present invention was created. With the information display switching panel of the present invention, the design of characters, graphics, and the like is switched by turning on and off the light source, and the chromatic color of the design can be displayed beautifully.
The brightness difference is described for the portion where the first pattern layer 2 and the second pattern layer 3 overlap. Actually, various patterns can be assumed, but it is desirable that all the portions have the above-described brightness difference, but the brightness difference is 50 or more in 70% or more, preferably 90% or more of the total area. Preferably there is.

Another embodiment will be described below with reference to FIG.
Using a UV curable ink jet printer (JF-1610; Mimaki Engineering) on one side of 400 μm thick foamed polypropylene (trade name RMM400; YUPO Corporation), which is a translucent substrate 1, a light source The 2nd pattern layer 3 of the pattern displayed at the time of lighting was formed.

  A masking layer 7 was formed on the second pattern layer 3 by printing on the entire surface with white ink (UV curing ink for JF-1610) using a UV curable ink jet printer. The concealing layer 7 is a layer that plays a role of displaying the second picture layer 3 when the light source 4 is turned on and displaying the first picture layer 2 described later when the light source 4 is turned off.

  On the masking layer 7, a first pattern layer 2 of a pattern displayed when the light source 4 was turned off was formed using a UV curable ink jet printer.

  With such a configuration, since there are two picture layers sandwiching the concealing layer 7 on one side of the semi-transparent substrate 1, the picture is not blurred when light from the light source 4 is transmitted from the back side. . Moreover, since all the processes are performed on one side, there are few effects in each process.

Furthermore, if there is a concealing layer 7 between the first picture layer 2 and the second picture layer 3, the position of the semi-transparent substrate 1 is not particularly related.

DESCRIPTION OF SYMBOLS 1 Translucent base material 2 1st pattern layer 3 2nd pattern layer 4 LED light source 5 Observer (eyes)
6 Information display switching panel 7 Hiding layer

Claims (3)

A semi-permeable substrate;
A first pattern layer formed on one side of the semi-transmissive substrate;
A second pattern layer formed on the other surface of the translucent substrate,
The information display switching panel, wherein a difference in brightness L ^* between corresponding portions of the first pattern layer and the second pattern layer is 50 or more. A semi-permeable substrate;
A second picture layer formed on one side of the semi-permeable substrate;
A concealing layer formed on the second picture layer;
A first pattern layer formed on the concealing layer,
The information display switching panel, wherein a difference in brightness L ^* between corresponding portions of the first pattern layer and the second pattern layer is 50 or more.   The information display switching panel according to claim 1, wherein the semipermeable base material is foamed polypropylene.

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