JPH1178679A - Rear combination lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the producibility and reduce the costs by forming a cover and lens of a rear combination lamp in a single piece structure through resin molding, and subjecting the molding to an in-mold transcribing processing with a transcription foil. SOLUTION: This rear combination lamp for an automobile is composed of a plurality of lenses, cover 1, housing, etc., wherein the cover 1 and lenses are formed in a single piece structure through resin molding and the resin molding 7 is subjected to an in-mold processing with a transcription foil 2, wherein a figure to express hue such as red, yellow, white is furnished on each lens in the figure layer of the transcription foil in the lens part 3a, while a figure to represent the hue of the cover as the car body color, etc., is furnished on the figure layer of the transcription foil in the cover part 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens, cover, housing and the like constituting a rear combination lamp, in which the cover and the lens are integrated by resin molding, and red, yellow, The present invention relates to a rear combination lamp in which a transfer foil capable of expressing a color tone such as white is integrally formed.

[0002]

2. Description of the Related Art Conventionally, tail lamps, stop lamps, and the like installed at the rear of a vehicle are provided on both sides of a rear surface to display the presence of a vehicle behind at night, the positional relationship between the vehicles, and the stopped state of the vehicle. According to security standards, the tail lamp is
Lighting can be confirmed from a distance of 00 m, and the color of the light is set to red.

[0003] Many tail lamps are combined as a combination rear lamp combined with a lamp around the rear of the vehicle. Conventionally, as shown in FIG. 4, this type of lamp is composed of a lens 3, a cover 1, a housing, and a bulb 5, and in this case, the cover and the lens are often constituted separately.

The following methods have been used to manufacture the cover and lens of the rear combination lamp. (1) A method in which a lens with a lens cut is assembled by ultrasonic welding or fitting to a cover molded with resin of the vehicle body color or painted as necessary after the resin molding. (2) A method using two-piece molding. This is a method in which a cover portion is molded with a resin having a vehicle body color, and then a transparent resin is injection-molded and molded with the cover in order to mold a lens in the same molding machine. The cover and lens may be molded in reverse order. In addition, insert molding in which this step is performed twice is also employed. In both (1) and (2), the lens portion is made of a translucent resin and is formed of, for example, PC: polycarbonate, PMMA: polymethyl methacrylate, or the like.

[0005]

In both of the above (1) and (2), the cover and the lens are made in separate steps, which is a step with low productivity.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a cover and a lens of a rear combination lamp, which have been formed separately or in two steps in a conventional product, are integrated by resin molding and a transfer foil is transferred to the molded product by in-mold transfer. When processing and integrating, the design layer of the transfer foil in the lens part is provided with a pattern for expressing the color tone such as red, yellow, white, etc. on the lens, and the design layer of the transfer foil in the cover part is covered By providing a design that expresses the color tone as a vehicle color or the like, two parts having different color tones are formed by in-mold molding to improve productivity and reduce cost.

That is, the first invention relating to the rear combination lamp of the present invention provides a cover 1 of a rear combination lamp 6 of an automobile comprising a lens 3, a cover 1, a housing 4 and the like, and a fine uneven surface formed by lens cutting and the like. A transfer in which a plurality of lenses 3 to be formed are integrated by resin molding, and a release layer 2b, a pattern layer 2c, and an adhesive layer 2g are sequentially formed on a base film 2a on the front side or the back side of the resin molded product 7. When the foil 2 is integrally molded by in-mold molding, the lens is colored red on the design layer 2c of the transfer foil in the lens portion 3a of the resin molded product 7.
A pattern for expressing a color tone such as yellow, white or the like is provided, and a pattern for expressing the color tone of the cover as a body color or the like is provided on the pattern layer 2c of the transfer foil in the cover portion 1a. is there.

In a second aspect of the present invention, the release layer 2b is
2. The rear combination lamp according to claim 1, wherein the rear combination lamp is made of a light-curable resin, a radiation-curable resin, or a thermosetting resin.

A third invention is the rear combination lamp according to claim 1 or 2, wherein the transfer foil 2 has a heat absorbing layer 2h formed between the design layer 2c and the adhesive layer 2g.

In a fourth aspect of the present invention, after the in-mold molding, a protective layer made of a photo-curable resin, a radiation-curable resin or a thermosetting resin is formed on the release layer 2b by painting. 2. A rear combination lamp according to claim 3.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A normal rear combination lamp has the following three functions. That is, the types and the projected colors are as follows.・ Stop lamps and tail lamps: red ・ Turn indicators and hazard lamps: yellow ・ Back lamps: white By the way, in the conventional product, lamps with their functions are assembled in an integrated housing, and each color is set from above. A light-transmissive cover colored red, yellow, white, etc. is assembled to present.

According to the present invention, a lens and a cover, which are components of a rear combination lamp conventionally manufactured in a separate process, are integrated by resin molding, and a plurality of lens portions 3a of the molded product are provided with a red color lens. A transfer foil provided with a design layer 2c for expressing a color tone such as yellow or white is integrally formed by an in-mold transfer method.

When the transfer foil is in-mold molded on the front or back surface of the cover portion 1a and the lens portion 3a which are integrally injection-molded with a translucent resin material, the cover portion 1a applies a design layer of the transfer foil to the body color. The color tone of the cover is expressed as a body color or the like. On the other hand, the transfer foil in the lens portion 3a is a design layer capable of expressing red for a tail lamp, yellow for a direction indicator and a hazard lamp, and white for a back lamp, and this transfer foil is transparent. Or slightly smoked to make it translucent.

As shown in FIG. 1 (corresponding to the section AA in FIG. 4), the cover 1 and the lens 3 of the resin-made rear combination lamp 6 are integrated by injection molding. And the lens part 3
The transfer foil 2 is integrally formed on the front surface or the back surface of the cover portion 1a by in-mold molding as required. As the resin composition for forming the cover portion 1a and the lens portion 3a, a material such as a polycarbonate resin and a methyl methacrylate resin is used.

As shown in FIG. 2, the transfer foil 2 used in the present invention includes a base film 2a for continuously feeding the transfer foil 2 during in-mold molding, and a transfer layer 2X formed thereon. Consists of Further, the layer configuration of the transfer layer 2X is such that the release layer 2b and the lens portion 3a have a design layer 2c and a front anchor layer 2 for expressing a color tone such as red, yellow, or white.
d, a metal deposition layer 2e, a rear anchor layer 2f, and an adhesive layer 2g. The above-mentioned metal deposition layer 2e is a cover part 1a.
This is for expressing the vehicle body color or improving the reflectivity around the lens, but may be provided as necessary.
When the metal deposition layer 2e is not used, the front anchor layer 2d and the rear anchor layer 2f can be omitted.

Further, since the components of the rear combination lamp according to the present invention are used for the exterior of a vehicle, the components are not only exposed to strong direct sunlight or rain, but are frequently washed, and are thus heat-resistant. Extremely strict performance is required in terms of water resistance, cold resistance, water resistance, weather resistance and the like. Therefore, the release layer 2b constituting the transfer foil 2 is configured as follows.

The release layer 2b is a layer which is peeled off from the base film 2a when the base film 2a is peeled off after the in-mold molding and becomes the outermost surface of the transfer object. Examples of the material of the release layer 2b include acrylic resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, and ethylene resin. -It is preferable to use a copolymer such as a vinyl acetate copolymer resin.

The peeling layer 2b is required to have such durability that the rear combination lamp 6 is not damaged by a brush for washing a vehicle or the like, so that the peeling layer 2b particularly needs to have hardness. In this case, it is preferable to select and use a photocurable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin.
The release layer 2b may be colored or uncolored. As a method for forming the release layer 2b, there are a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure printing method and a screen printing method.

The protective layer is provided after the in-mold molding as required. The protective layer is the rear combination lamp 6
Is a layer for further increasing the surface hardness of the component parts.
As the material of the protective layer, a photocurable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin may be selected and used. The protective layer may be colored or uncolored. As a method for forming the protective layer, a coating method is suitable.

Next, the in-mold molding method used in the present invention will be described. Normally, a lens portion 3a of this type of rear combination lamp is provided with a lens cut on the back surface for the purpose of improving the directionality and visibility of light. The cross section of the lens cut is a sharp triangular cross section, and a transfer foil having a thickness of at most 10 μm is in-mold-transferred to the cross-section. Cracks may occur.

For this reason, in the present invention, when in-mold transfer is performed, before the resin is injected, the transfer foil is softened by heating to follow fine irregularities such as lens cuts.
In other words, before forming, the transfer foil is softened by preheating, the transfer foil is clamped to the mold surface, and then evacuated, the transfer foil 2 follows the minute lens cut of the mold surface, and the lens portion can be formed. Become. Further, as shown in FIG. 3, a heat absorbing layer 2h is provided between the design layer 2c and the adhesive layer 2g of the transfer foil so as to easily soften the transfer foil by heating. Can be improved. The heat absorbing layer 2h is preferably made of an isocyanate resin or a polyol resin to which a metallic pigment is added.

[0022]

In the rear combination lamp according to the present invention, a cover and a plurality of lenses which constitute one part thereof are integrated by resin molding, and a transfer foil is in-mold-transferred onto the cover to form, for example, a lens portion. Red, yellow,
Since the color tone such as white can be expressed, the light transmittance and light diffusion of the lens portion are comparable to those of the conventional product. Further, (1) the cover portion 1a of the rear combination lamp and a plurality of red,
Since the lens portion 3a that is colored yellow and white is formed simultaneously by in-mold transfer processing, the lens portion 3a can be produced in a smaller number of steps as compared with the production steps of a conventional product. (2) The release layer 2b of the transfer foil is formed of a photo-curable resin, a radiation-curable resin, or a thermosetting resin, and furthermore, the protective layer is formed by painting after in-mold molding, thereby providing excellent water resistance and weather resistance. Since it has properties and the like, it can exhibit excellent durability even under extremely severe conditions such as exterior parts of automobiles. (3) By providing the heat absorbing layer 2h on the transfer foil 2, it is possible to follow the irregularities of the fine lens cut by pre-softening by preheating before in-mold transfer.

[Brief description of the drawings]

FIG. 1 is a sectional view of a cover portion of a rear combination lamp of the present invention.

FIG. 2 is a cross-sectional view showing one embodiment of a transfer foil used for components of the rear combination lamp of the present invention.

FIG. 3 is a sectional view showing another embodiment of the transfer foil used for the components of the rear combination lamp of the present invention.

FIG. 4 is a configuration diagram showing one embodiment of a conventional rear combination lamp.

[Explanation of symbols]

1 cover, 1a cover part, 2
Transfer foil, 2a base film, 2b release layer,
2c pattern layer, 2d front anchor layer, 2e
Aluminum deposition layer, 2f anchor layer, 2g adhesive layer,
2h heat absorption layer, 2x transfer layer, 3
Lens, 3a lens part, 4 housing, 5 bulb, 6 rear combination lamp, 7 resin molded product.

Claims (4)

[Claims] 1. A cover 1 of an automobile rear combination lamp 6 comprising a lens 3, a cover 1, a housing 4 and the like, and a plurality of lenses 3 formed on a fine uneven surface by lens cutting or the like by resin molding. When the transfer foil 2 in which the release layer 2b, the pattern layer 2c, and the adhesive layer 2g are sequentially formed on the base film 2a on the front side or the back side of the resin molded product 7 is integrally molded by in-mold molding, A pattern for expressing a color tone such as red, yellow, white or the like is provided on the lens in the design layer 2c of the transfer foil in the lens portion 3a of the molded article 7, and the color tone of the cover is provided in the design layer 2c of the transfer foil in the cover portion 1a. The rear combination lamps are provided with a design that expresses the vehicle color and the like. 2. The rear combination lamp according to claim 1, wherein the release layer 2b is formed of a photo-curable resin, a radiation-curable resin, or a thermosetting resin. 3. The rear combination lamp according to claim 1, wherein the transfer foil 2 has a heat absorbing layer 2h formed between the design layer 2c and the adhesive layer 2g. 4. A protective layer made of a photo-curable resin, a radiation-curable resin or a thermosetting resin is formed on the release layer 2b by painting after the in-mold molding. The described rear combination lamp.