JPH0635266Y2 - Display panel for transmitted illumination - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Use of the Invention] The present invention relates to a display panel for transmitted illumination used in, for example, an automatic instrument.

[Background of the invention]

As a first conventional technique of this type of display panel for transmitted illumination, there is a structure as shown in FIGS. 4 to 6, for example. This structure is particularly devised so that the translucent brightness (illumination) of the display portion 2 for each character or the like provided on the display plate 1 becomes substantially uniform. Transparent substrate 1a, translucent colored printing layer 1b formed on the entire surface of transparent substrate 1, and pinholes or light leakage formed on the surface of colored printing layer 1b by removing the shape of display unit 2 Light-blocking layer 1c for prevention
And, on the surface of this light-shielding layer 1c, a printing layer for printing 1d formed by removing the above-mentioned display portion 2 is applied, and on the back surface part of the transparent substrate 1a, each display applied on the surface of the transparent substrate 1 The dimming layer 1e is formed by halftone dot printing for making the illumination light of the translucent display of the portion 2 substantially uniform.

However, in such a conventional transillumination display plate, in order to prevent light leakage due to pinholes, uneven coating, etc. of the printing layer 1d, which is the outermost layer of the display plate 1, printing is performed by the printing plate. Since the light-shielding layer 1c is applied before applying the layer 1d, there are many printing steps, which increases the cost. In addition, since the display portion having the same pattern is formed on both the light shielding layer 1c and the modeling printing layer 1d, the light shielding layer
When the 1c and the printing layer 1d for molding are formed, the positions of the display portions 2 of both of them must be aligned so that the precision of the positioning of the substrate during the printing process must be increased. There was a problem that it took time.

As a second conventional technique, there is a front panel in which first and second light non-transmissive layers 20 and 22 are provided on the back surface and the front surface of a translucent substrate (Japanese Utility Model Application No. 58-178078). 60-84
No. 988) Microfilm). However, this front panel does not have a colored layer between the second light-impermeable layer and the transparent substrate, and the transparent substrate is exposed through the watermark, so sunlight or the like may flicker or may be transparent. On the back surface of the substrate, there is a drawback that a first light opaque layer is formed, and then the watermark is coated with a coloring material, that is, the layer is formed by two steps, which results in high manufacturing cost. It was

[Purpose of device]

The present invention has been made in view of the above-mentioned problems, and solves the problem of the time and effort during the printing process due to the presence of the light-shielding layer in the first prior art, and the second prior art. Transmitted illumination that solves problems such as direct see-through of the transparent substrate from the watermark of the second light non-transmissive layer and two-step formation of the first light non-transmissive layer, makes the display easy to see, and enhances productivity or economy. It is intended to provide a display board for use.

[Outline of device]

The transillumination display plate according to the present invention has a translucent colored printing layer 13 formed on the surface of a translucent substrate 12, and a light shielding layer 15 on the surface thereof except for a display portion 14 such as characters and symbols. In addition to providing, on the back surface of the substrate 12, in the display plate 11 provided with a net-like transmitted light adjusting film 16 'made of a light-shielding paint for adjusting the transmitted light, except the portion corresponding to the display portion 14 on the back surface of the display plate. It is characterized in that it is shielded from light by printing on the entire surface.

[Example of device]

The present invention will be described below in detail with reference to the embodiments shown in FIGS.

Reference numeral 11 indicates a display plate for transmitted illumination.
Is a transparent substrate 12, a transparent colored printing layer 13 formed on the surface of the transparent substrate 12, and the surface of the colored printing layer 13,
The light-shielding layer 15 is provided to shield the other portions from the shapes of the display portion 14 such as characters and display lines. Also transparent substrate 12
On the back surface of this, a part corresponding to the display part 14 becomes a net-like transmitted light adjusting film 16 ', a part corresponding to the other display part 14 becomes unpainted, and the other whole surface becomes a light shielding layer. The light shielding layer 16 is applied.

In the transillumination display board 11 according to the present embodiment, the coating layer applied to the front and back of the transparent substrate 12 is the colored printing layer 13 and the light shielding layer.
Since it has a three-layer structure of 15 and the light-modulating light-shielding layer 16, it has a feature that the step of forming the layer is omitted as compared with the conventional four-layer structure of the display panel for transmitted illumination, and the economical efficiency is improved. Further, conventionally, when applying the light-shielding layer 1c and the printing layer 1d for modeling, it is necessary to position the display section 2 formed when the layers 1c and 1d are layered, so that positioning work during layering is also required. Although it is time-consuming and difficult to manufacture, this embodiment can also eliminate the difficulty and provide a display board of good quality at low cost. Further, since the light-shielding layer 16 on the rear surface of the transparent substrate is formed by printing with the same light-shielding paint as the net-like transmitted light adjusting film 16 ′, the printing process of the light-shielding layer 16 is performed simultaneously with the net-like transmitted light adjusting film 16 ′. Can be made. Further, a transparent colored printed layer 13 is formed on the surface of the transparent substrate.
Since a light-shielding layer is formed on the surface of the transparent substrate, a colored printing layer covering the transparent substrate is exposed in the display portion of the characters, symbols, etc. of the light-shielding layer. Because the sunlight is reflected on it, there is no flicker.

[Effect of device]

As described above, according to the present invention, since the colored printing layer is formed on the surface of the transparent substrate, sunlight does not reflect on the transparent substrate to cause flickering, and the display board has a daytime appearance. Can be better. And the light shielding layer is 1
Since it is a layer, as in the conventional example, the light shielding layer 1c and the printing layer for modeling
It is possible to perform good display without both edges of the display portion formed by removing 1d being displaced from each other and the outline being unclear. Further, the step of forming the light-shielding layer 1c shown in the conventional example can be omitted, and further, the strict alignment work of the display section can be omitted, so that it is possible to provide a display plate whose cost is lower than that of the conventional product. .

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a transillumination display plate according to the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a partial rear view thereof, and FIG. 4 is a plan view of a conventional example. Fig. 5 is its cross-sectional view,
FIG. 6 is a partial rear view thereof. 11 ... Transmitted illumination display plate, 12 ... Transparent substrate 13 ... Colored printing layer, 14 ... Display part 15 ... Light-shielding layer, 16 ... Dimming light-shielding layer 16 '... Halftone dot dimming part

Claims (1)

[Scope of utility model registration request] 1. A light-shielding layer (13) is formed on the surface of a light-transmissive substrate (12), and a light-shielding layer (13) is formed on the surface of the substrate except a display portion (14) for letters, symbols and the like. A display plate (11) provided with 15) and a net-like transmitted light adjusting film (16 ') made of a light-shielding paint for adjusting transmitted light on the back surface of the substrate (12).
The display plate for transmitted illumination according to the above, wherein a portion other than a portion corresponding to the display portion (14) on the back surface of the display plate is covered with the entire surface to block light.