JPH1191440A - Resin character light type number plate and manufacture therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a character light type number plate which is lightweight and rich in durability, and can be easily mass-produced. SOLUTION: A masking sheet 3 of a prescribed character pattern is stuck on a light transmissive resin base board l through an easily separable pressure sensitive adhesive layer 2, and light shielding paint is applied, dried and hardened on it, and a light shielding layer 4 is formed, and a character hole 5 of a prescribed pattern is formed by separating the masking sheet 3 together with the pressure sensitive adhesive layer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a license plate for an automobile such as a passenger car or a truck, and more particularly to a character-type license plate which can be easily identified even at night using illumination.

[0002]

2. Description of the Related Art In order to make it easy to recognize a license plate of an automobile even at night or in bad weather, a character license plate is used. The character-type license plate has a character portion having a light-transmitting property, and is used by being attached to a plate holder provided with a lighting fixture. That is, during the night, only the character portion is illuminated by illuminating from the back surface of the plate, and during the day, the character is recognized by the difference in reflected light by not illuminating the illumination.

FIG. 4 shows a state in which a license plate is attached to a plate holder. In the drawing, reference numeral 41 denotes a mounting frame of a plate holder, 42 denotes a license plate, 43 denotes a character portion of the license plate, and 44 denotes a mounting screw for mounting the license plate to the mounting frame 41.

FIG. 5 is a schematic sectional view of an end portion when a conventional license plate is attached. In the figure, 51
Is a plate holder main body, and 52 is illumination. As shown in FIG. 5, a conventional license plate has a metal plate 42 in which holes of a predetermined character pattern are formed, a surface is coated with a predetermined color paint, and the cross section of the holes is substantially T-shaped. The character portion 43 is formed by fitting a transparent resin molded body formed into a character shape.

[0005]

However, the conventional license plate has problems such as heavy weight and rust because the plate 42 is made of metal as described above. In addition, since the character portion 43, which is a resin molded product, and the metal plate 42 have significantly different linear expansion coefficients, a problem arises in that stress is applied to the character portion 43 due to a change in environmental temperature and cracks occur. I was

[0006] Furthermore, only one pair of the same number plate is used before and after the vehicle, and the combination of characters differs depending on each vehicle. Therefore, when printing a light-shielding portion other than a character portion by a screen printing method suitable for mass production, it is necessary to create two screen-printed plates every production.
It is no longer a realistic manufacturing method.

An object of the present invention is to provide a light-operated license plate which is lightweight, durable and can be mass-produced, and a method of manufacturing the same.

[0008]

The first aspect of the present invention is a character-type license plate having a light-shielding background portion and a translucent character portion and used by being attached to a plate holder provided with a lighting fixture. And a light-transmitting resin-type license plate comprising a light-transmitting resin substrate and a light-shielding layer laminated only on a background portion on the substrate.

A second aspect of the present invention is a character-type license plate having a light-shielding background portion and a translucent character portion and used by being attached to a plate holder provided with a lighting device. A resin character type optical license plate comprising a resin substrate, a light shielding layer formed only on a background portion on the substrate, and a translucent character layer laminated only on a character portion.

A third aspect of the present invention is a method for manufacturing the resin-made optical license plate according to the first aspect of the present invention, wherein the adhesive is provided on a translucent resin substrate and has an easy peeling property with respect to the substrate. Through the agent layer, a masking sheet of a predetermined character pattern is adhered, and after the light shielding layer is laminated on the entire substrate, the masking sheet is peeled off from the substrate together with the easily peelable pressure-sensitive adhesive layer to form a light shielding layer. It is characterized in that character holes of a predetermined pattern are formed.

Further, the fourth and fifth aspects of the present invention each relate to the above-mentioned second method of manufacturing a resin-made optical license plate according to the second aspect of the present invention. After pasting a masking sheet of a predetermined character pattern through an adhesive layer having an easy-peeling property, and laminating a light-shielding layer on the entire substrate, the masking sheet and the easy-peeling adhesive layer are attached to the substrate. By peeling more
A character hole having a predetermined pattern is formed in the light-shielding layer, and a light-transmitting resin molded body having a shape corresponding to the character hole is laminated on the character hole. An adhesive layer, a light-transmissive resin molded article, an adhesive layer having a releasable property with respect to the molded article, and a masking sheet are sequentially laminated to form a laminate having a predetermined character pattern. The masking sheet is peeled from the substrate together with the easily peelable pressure-sensitive adhesive layer after the light-shielding layer is laminated on the entire substrate.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. In the present invention, “characters” include numbers and symbols formed on a plate.

FIG. 1 schematically shows the steps of an embodiment of the third method for manufacturing a resin-made optical license plate of the present invention. (A) to (c) in the figure are cross-sectional views corresponding to the following steps -a to c.

Step-a A masking sheet 3 formed in a predetermined character pattern is adhered on a transparent resin substrate 1 via an adhesive layer 2. In the present invention, the material of the transparent resin substrate 1 is not particularly limited as long as it has a necessary strength as a license plate, transmits illumination light from the back surface, and has weather resistance. An acrylic resin, a methacrylic resin, a polycarbonate resin, or the like is preferably selected, and is used by containing a coloring material as necessary so as to obtain a predetermined color tone. The thickness of the substrate 1 is preferably about 0.5 to 2.0 mm in consideration of using a conventional plate holder.

The pressure-sensitive adhesive layer 2 used in the present invention includes:
The masking sheet 3 is not limited as long as it has easy releasability from the substrate 1, and a commercially available masking sheet with an adhesive layer can be used as it is. For example, "Hitalex" manufactured by Hitachi Chemical Co., Ltd. is preferably used.

Step-b: The light shielding layer 4 is formed on the entire transparent resin substrate 1 including the masking sheet 3. The light-shielding layer 4 can be formed by, for example, a method of applying or printing a paint having a predetermined color tone or a method of attaching a light-shielding resin sheet, and the thickness thereof is preferably about 20 to 30 μm. In the present invention, examples of the paint include commercially available acrylic-modified urethane-based paints. For example, “PX” manufactured by Origin Electric Co., Ltd.
8 "is preferably used.

The material of the light-shielding resin sheet is not particularly limited as long as it has a necessary light-shielding property. However, in order to avoid the problem of peeling from the transparent resin substrate 1,
And a material having a small difference in coefficient of linear expansion with the same material as the transparent resin substrate 1 or a material close to the material, for example, a sheet formed by adding a pigment of a predetermined color tone to give a light-shielding property, Or by means of heat fusion or the like.

In addition, metal foil, printing ink, and the like can be used as appropriate.

Step-c By peeling off the masking sheet 3 from the substrate 1,
The light-shielding layer 4 on the masking sheet 3 is also removed from the substrate 1, and character holes 5 having a predetermined pattern are formed.

In the license plate of the present invention, the illumination light radiated from the back surface and transmitted through the translucent resin substrate 1 passes only through the character hole 5, so that only the characters are shining and observed, and the characters can be easily observed even at night. Can be identified.

Next, a method of manufacturing the second letter-type license plate of the present invention will be described. As a method of manufacturing the license plate, there are a fourth manufacturing method and a fifth manufacturing method of the present invention, due to the difference in the steps of forming the translucent character layer.

FIG. 2 schematically shows a cross section of a license plate obtained by the fourth manufacturing method of the present invention. In the figure, the same members as those in FIG. In the present production method, the translucent character layer is formed by attaching a translucent resin molded body later. That is, a translucent resin molded body 22 that has been molded in advance is adhered to the character hole 5 of the license plate obtained by the first manufacturing method shown in FIG. 1 via the adhesive layer 21.

In the present invention, the material of the transparent resin molded body 22 is not particularly limited.
It is desirable to use the same material. Also, the adhesive layer 21
A material having strong adhesiveness to both the translucent resin molded body 22 and the translucent resin substrate 1 is used, but the translucent resin molded body 22 is attached to the translucent resin substrate 1 by heat fusion or the like. The adhesive layer 21 may not be formed as long as it can be bonded. The thickness of the translucent resin molded body 22 is 0.5
The thickness is preferably about 2.0 mm, and a sheet-like molded body can also be used. Commercially available adhesives and molded products can be used. For example, "# 500" (double-sided tape) manufactured by Nitto Co., Ltd., and "Bucal" (molded product) manufactured by Lintec Co., Ltd. as a resin molded product. Sheet)
Is preferably used.

In the present invention, when characters are colored,
Either the transparent resin substrate 1 or the transparent resin molded body 22 may be colored. In order to make it colored, a method of applying a light-transmissive paint or ink to a colorless substrate or a molded body, or a method of molding using a resin containing a coloring material of a desired color, include the latter. It is more desirable to obtain uniform light transmission.

FIG. 3 schematically shows the steps of one embodiment of the fifth manufacturing method of the present invention. In the figure, the same members as those in FIG. (A) to (c) in the figure are cross-sectional views corresponding to the following steps a to c.

Step-a An adhesive layer 21, a translucent resin molded body 22, an adhesive layer 2 easily peelable from the molded body 22, and a masking sheet 3 are sequentially formed on the translucent resin substrate 1. The laminated body obtained by laminating is attached. The laminate is formed in a predetermined character pattern in advance.

Step-b As in the case of Step-b shown in FIG.
To form

Step-c By removing the masking sheet 3 while leaving the light-transmitting resin molded body 22, the light-shielding layer 4 in the character portion is removed, and the second license plate of the present invention is obtained.

In the second license plate of the present invention, since the character portion is formed thick, the recognition of the character becomes easier.

[0030]

As described above, according to the present invention,
The members are prepared corresponding to the respective colors and characters required for the license plate, and the necessary members are simply selected according to the combination. Further, in the present invention, since the character portion is masked, even when the light-transmitting layer is formed by screen printing, for example, it may be formed on the entire plate including the character portion, and only one type of printing plate may be used. Therefore, if masking sheets are prepared in advance, continuous production becomes possible.

Further, since the license plate of the present invention is formed of a combination of materials having the same or a small difference in linear expansion coefficient, there is no occurrence of cracks due to the difference in expansion coefficient, and the plate can be used for a long time. . Moreover, since it is made of resin, it is lightweight and easy to handle, and there is no problem of deterioration due to rust. In addition, when the character portion having translucency is formed of a resin substrate or a resin substrate and a resin molded body made of a resin containing a coloring material in advance, the uniformity is obtained as compared with the case of using a translucent paint or ink. Translucent and highly recognizable characters can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing the steps of an embodiment of the production method of the present invention.

FIG. 2 is a view schematically showing a license plate of the present invention according to another embodiment of the manufacturing method of the present invention.

FIG. 3 is a view schematically showing steps of an embodiment of another manufacturing method of the present invention.

FIG. 4 is a view showing a state in which a letter-type license plate is attached to a plate holder.

FIG. 5 is a schematic cross-sectional view of an end portion of a conventional letter-type license plate attached to a plate holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Translucent resin substrate 2 Adhesive layer 3 Masking sheet 4 Light shielding layer 5 Character hole 21 Adhesive layer 22 Translucent resin molding 41 Mounting frame 42 Number plate 43 Character part 51 Plate holder main body 52 Lighting

Claims (11)

[Claims] 1. A character-type license plate having a light-shielding background portion and a light-transmitting character portion and used by being attached to a plate holder provided with a lighting device, comprising: a light-transmitting resin substrate; A resin-made optical license plate comprising a light-shielding layer laminated only on an upper background portion. 2. The resin-made optical license plate according to claim 1, wherein said translucent resin substrate is colored. 3. A character-type license plate having a light-shielding background portion and a light-transmitting character portion and used by being attached to a plate holder provided with a lighting device, comprising: a light-transmitting resin substrate; A resin-made character-type license plate comprising: a light-shielding layer formed only on an upper background portion; and a translucent character layer laminated only on a character portion. 4. The resin-made optical license plate according to claim 3, wherein said translucent resin substrate is colored and said translucent character layer is colorless. 5. The resin-made character-type license plate according to claim 3, wherein the light-transmitting resin substrate is colorless and the light-transmitting character layer is colored. 6. The method of manufacturing a resin-made optical license plate according to claim 1, wherein the light-transmitting resin substrate comprises:
Via a pressure-sensitive adhesive layer having an easy-peeling property to the substrate, a masking sheet of a predetermined character pattern is attached, and after a light-shielding layer is laminated on the entire substrate, the masking sheet is put together with the easy-peeling pressure-sensitive adhesive layer. A method of manufacturing a resin-made optical type number plate, wherein a character hole having a predetermined pattern is formed in the light-shielding layer by peeling off the substrate. 7. The method for manufacturing a resin-made optical license plate according to claim 3, wherein the resin-made optical license plate is provided on a light-transmitting resin substrate with an adhesive layer having an easy peeling property from the substrate. Affixing a masking sheet of a predetermined character pattern, after laminating a light-shielding layer over the entire substrate, by peeling the masking sheet from the substrate together with the easily peelable adhesive layer,
A method for producing a resin-made optical license plate, comprising: forming a character hole having a predetermined pattern in a light-shielding layer; and laminating a transparent resin molded body having a shape corresponding to the character hole in the character hole. 8. The method for manufacturing a resin-made optical license plate according to claim 3, wherein the adhesive layer, the light-transmitting resin molded body, and the light-transmitting resin molded body are formed on the light-transmitting resin substrate. After laminating a pressure-sensitive adhesive layer having an easy peeling property and a masking sheet in sequence and applying a laminate having a predetermined character pattern so that the adhesive layer is in contact with the substrate, and laminating a light-shielding layer over the entire substrate, A method for producing a resin-made optical license plate, comprising: releasing the masking sheet together with the easily peelable pressure-sensitive adhesive layer from the substrate. 9. The method according to claim 6, wherein the light-shielding layer is formed by applying a light-shielding paint. 10. The method according to claim 6, wherein the light-shielding layer is formed by laminating light-shielding resin sheets. 11. The method according to claim 6, wherein the light shielding layer is formed by laminating a light shielding paint by printing.