JP2002329406A - Lamp structure body and lamp cover or automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to manufacture a combination lamp superior in design property and visibility by the use of a small number of dies easily and inexpensively without being accompanied by a reduction in the yield. SOLUTION: In a lamp structural body provided with at least two lamp rooms at whose respective lamp room the lamp is arranged and which has an opening for light emission, this is constituted so that the lamp rooms are adjacently arranged with each other and whose opening for the light emission is covered by a lamp cover made of a translucent resin, and in a light transmission region, so that a colored film possible to present almost the same hue as the transmitted beam of the light transmission region adjacent to this region is made to be pasted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automotive lamp structure and a lamp cover used for the same. The lamp structure of the present invention can be particularly advantageously used as a rear combination lamp for a passenger car.

[0002]

2. Description of the Related Art As is well known, a red stop lamp and a tail lamp (a brake light and a tail light), which are turned on in conjunction with the use of a brake, and a direction switch are provided on the rear portion of a car or truck body. Amber-colored turn signal lamps (direction indicators) that are lit in conjunction with the vehicle, colorless backup lamps (backlights) that are lit in conjunction with the reverse operation, etc., are also installed. Although typical for a passenger car, in consideration of design and visibility, they are collectively arranged on the left and right sides of the rear portion in a substantially straight line in the vertical direction or a substantially straight line in the horizontal direction. Such a lamp group is usually called a rear combination lamp.

FIG. 1 is a front view showing an example of a rear combination lamp of a passenger car. The illustrated rear combination lamp 100 is a combination of a red stop lamp / tail lamp (R), an amber turn signal lamp (A), and a colorless backup lamp (C) in this order. The room is covered with a lamp cover. For the lamp cover, the red lamp cover for the stop lamp and tail lamp, the amber lamp cover for the turn signal lamp, and the colorless lamp cover for the backup lamp are injection-molded using their own molds. ,
It is covered by the opening of the lamp chamber. On the periphery of the lamp cover, a stainless steel rim 10 is used to improve the appearance.
1 is attached.

Recently, in such rear combination lamps, the combination and shape of the lamps have been diversified or the partitions between the lamps have been diversified in order to improve the design and the visibility when the lamps are lit or not lit. Improvements such as providing patterns have been added. For example, the same red resin used for the stop lamp and tail lamp may be wrapped around the amber turn signal lamp and the colorless backup lamp to form a partition, or the stop lamp and tail lamp may be separated by another color lamp. For example, a red resin region is provided in a region far away. However, in the case of such an improved rear combination lamp, it is necessary to use more dies, but it is necessary to use more dies. Defects such as complicated design of the mold itself, complicated molding, reduced yield, and increased cost cannot be avoided.

In view of recent trends, minor changes are often made in various parts of the same vehicle type, and the rear combination lamp is no exception. Therefore, it is desirable to provide a lamp structure that does not require a new mold even if there are minor changes. Furthermore, using the current injection molding method for the manufacture of each lamp cover,
The injection molding process must be repeated for the number of resin areas of a specific color (the number of areas), and the red / amber / red / amber /
The production of a rear combination lamp having a resin region repeated like... Is almost impossible. That is, as long as the current injection molding method is used, there is a limit in improving the design.

Further, various types of rear combination lamps have been proposed so far, but none of them can completely overcome the above-mentioned disadvantages. For example, Japanese Utility Model Laid-Open No. 4-127903 discloses that a curved three-dimensional curved surface of a lens of a vehicle lamp such as a front lens (same as a lamp cover) of a rear combination lamp for a vehicle is relatively narrowly divided. There is disclosed a pattern structure of a lens curved surface in a vehicular lamp, characterized in that a patterned sheet is adhered along the three-dimensional curved surface and a gradation pattern is formed on the three-dimensional curved surface. In other words, the present invention proposes to use a tape-shaped pattern sheet, since inconvenience such as wrinkles occurs on the curved surface of the lens if the pattern sheet is entirely adhered to the front glass. However, with this pattern sheet, only a slight improvement in design can be achieved.

[0007] Japanese Patent Application Laid-Open No. 9-58337 discloses that
A tail lamp case cover for an automobile that emits light of a predetermined color from a plurality of lamp cases provided adjacent to each other with a light, and is formed of a molten resin, and is formed over a light emitting opening of the plurality of lamp cases. A transparent cover body provided in common, and a predetermined color is colored on a surface portion corresponding to a predetermined opening, and a transparent sheet made of a soft synthetic resin provided by superimposing the colored surface portion on a surface portion of the cover body. And a case where a transparent sheet is laminated and integrated with the cover body by a welding action of the molten resin when the cover body is formed by the molten resin. According to the description of this gazette, the use of a colored sheet for a transparent cover body has led to the development of a resin molding technique for applying a multicolored color. And the effect that a manufacturer name, a mark, and the like can be given. Japanese Patent Application Laid-Open No. 9-106704 discloses a similar tail lamp case cover. However, the case covers described in these publications do not use a colored resin for the cover body, so that beautiful light emission unique to the colored resin cannot be obtained. Also, since the colored sheet is formed by applying color printing to a transparent sheet, when exposed to the harsh outdoor environment,
It fades in a short period of time, and thus frequently requires replacement of the case cover. It is also conceivable to use a pigment-based ink having excellent weather resistance for color printing, but such an ink has a drawback that it cannot emit light in a beautiful color.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the various problems of the conventional combination lamp for an automobile as described above and to improve the design and visual recognition by using a small number of molds. An object of the present invention is to provide a combination lamp capable of easily and inexpensively producing a combination lamp having excellent performance without lowering the yield.

Another object of the present invention is to enable the use of a mold in use even if a minor change is made in the same vehicle model, in other words, waste an expensive mold. An object of the present invention is to provide a combination lamp that does not have any problem. Furthermore, another one of the present invention
One object is to provide a combination lamp having a resin region repeated like red / amber / red / amber / ... and capable of producing light emission excellent in design derived from a colored resin or light emission comparable thereto. Is to do.

[0010] Still another object of the present invention is to provide:
An object of the present invention is to provide a lamp cover useful for manufacturing the combination lamp of the present invention. The above and other objects of the present invention will be easily understood from the following detailed description.

[0011]

SUMMARY OF THE INVENTION The present invention is directed to a lamp structure comprising, on one side thereof, at least two lamp chambers each having a lamp disposed therein and having a light exit aperture. Are arranged adjacent to each other, and the light-emission openings of the lamp chambers are covered with a lamp cover made of a light-transmitting resin, so that the lamp cover allows the irradiation light from the lamp to pass therethrough. In the automotive lamp structure, the unnecessary light-impermeable region is attached with a colored film capable of exhibiting substantially the same hue as the transmitted light in the light-transmitting region adjacent to the region.

According to another aspect of the present invention, there is provided a split-type lamp structure including at least two lamp chambers each having a lamp disposed therein. It has a shape and size that cover at least the surface, is formed by molding a light-transmitting resin, and is colored with a different hue for each of the lamp chambers, if necessary, and emits light from the lamp. In a lamp cover for an automobile, a colored film capable of exhibiting substantially the same hue as that of light transmitted through a light-transmitting region adjacent to that region is attached to a light-impermeable region that does not need to transmit light.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The lamp structure according to the invention can be used in various fields as lighting means, but is particularly suitable as lighting means for motor vehicles. Further, since the lamp structure of the present invention takes the form of a combination lamp in which a plurality of lamps are combined, when used as a rear combination lamp around the rear of an automobile, it is possible to fully exert its operational effects. it can. However, the lamp structure of the present invention may be used around the front of an automobile or other parts as necessary. The type of automobile is not particularly limited, and includes passenger cars (including RVs, campers, etc.), buses, trucks, and the like. Passenger cars are suitable as targets.

The lamp structure of the present invention has at least two lamp chambers, and a lamp having an appropriate brightness is arranged in each of the lamp chambers. Also, the inner wall of the lamp chamber may have a structure such as a concave mirror so that light from the lamp may be collected, or may have a concave mirror or similar light reflecting means separately from the inner wall. Good. Also,
The lamp may have a cap colored in a predetermined color as needed. If a colored cap is used, a colorless cover can be used instead of the colored cover as the lamp cover. For example, the turn signal lamp can be covered with a cap colored in amber. The lamp chamber also has a light emission opening on the front surface. This opening is covered by the lamp cover of the present invention described in detail below.

In the lamp structure of the present invention, the respective lamp chambers are arranged adjacent to each other and in association with each other to provide a lamp structure suitable as a combination lamp. Specifically, the lamp room
Although not limited to those listed below, it includes a red stop lamp and tail lamp, an amber turn signal lamp, and a colorless backup lamp.
Further, as required, a fog lamp, a clearance lamp, and the like may be incorporated in the lamp structure.

The lamp structure of the present invention comprises a combination of at least two lamp chambers as described above. The lamp chambers may have the same shape and size, or may have different shapes and sizes. In the lamp structure, although the combination of the lamp chambers can be arbitrarily changed, in particular, in order to improve the visibility and design, and to realize a sense of unity with the vehicle body, the lamp chamber is almost straight in the vertical direction, or Almost straight in the horizontal direction,
It is preferable to arrange them collectively. However, if necessary, a modification may be made such that two or more lamp chambers having different shapes and sizes are non-linearly compacted.

As a preferred example, the lamp structure of the present invention is used as a rear combination lamp for an automobile. This lamp structure can therefore be formed by incorporating at least two of a stop lamp and a tail lamp, a turn signal lamp and a backup lamp in any pattern and combination. Generally, the stop lamp / tail lamp, the turn signal lamp and the backup lamp can be arranged vertically or horizontally in this order or in a different order. As a modified example, a relatively long stop lamp and tail lamp may be arranged in a row, and a turn signal lamp and a backup lamp may be arranged in the adjacent row with the same length in total.

In the lamp structure of the present invention, the light-emitting opening of the lamp chamber is covered with a lamp cover made of a light-transmitting resin. The lamp cover is preferably one in which the covers of the respective lamp chambers are integrally joined, that is, integrally formed by injection molding or another molding method from a light-transmitting resin as described below. It is a thing. Such a lamp cover is not particularly limited as long as it has a shape and a size at least covering the light exit surface of the lamp chamber, but is generally rectangular or square, and in some cases, L-shaped. May be provided.

The lamp cover is colored with a different hue for each lamp chamber as needed, that is, according to the hue of the light emitted therefrom. For example, the cover of the stop lamp and the tail lamp that requires red light emission is colored red, and the cover of the turn signal lamp that requires amber light emission is colored amber. Alternatively, instead of coloring the cover, a colorless cover may be used to cover the lamp with a colored cap. By using such another method together, it is possible to obtain an appearance different from that using a colored cover. Of course, the cover of the colorless backup lamp need not be colored.

A colorless or colored lamp cover is
It can be advantageously formed by molding from any light-transmitting resin. Suitable molding methods include conventional molding methods such as injection molding and vacuum molding. The raw material resin used for molding is not limited to those listed below, but includes styrene-based resin, hard vinyl chloride resin, acrylic resin, polycarbonate resin and the like. In particular, an acrylic resin can be advantageously used. This is because they have excellent strength and transparency, and can be advantageously colored.

Further, when producing a colored lamp cover, an appropriate amount of a coloring agent can be mixed into the above-mentioned resin raw material. Suitable colorants include, but are not limited to, the following: Dyes (all from the color index) can be mentioned. In the practice of the present invention, dyes such as azo dyes and disazo dyes can be particularly advantageously used because they have excellent dispersibility in a resin and good color development, transparency and weather resistance.

In the production of the lamp cover, the resin raw material may contain, in addition to the colorant, an additive commonly used in the field of plastic molding. Suitable additives include, for example, ultraviolet absorbers, light stabilizers, heat stabilizers, and the like. For example, suitable UV absorbers include, but are not limited to, those listed below, such as benzotriazole, benzophenone, diphenylacrylate, and amine UV absorbers. The amount of the ultraviolet absorber added can be changed in a wide range, but is usually in the range of about 0 to 3% by weight based on the total amount of the raw resin.

It is preferable that the lamp cover is usually provided with an uneven pattern on its inner surface (the surface on the lamp side).
This is because a function as a lens body or a retroreflective function can be obtained by the uneven pattern. The uneven pattern is, for example,
The pattern can be imparted to a mold, and then transferred from the mold to a molded body (lamp cover) at the stage of molding.

Outer surface of lamp cover (surface in contact with outside air)
Although usually has nothing, it may be covered with a thin, transparent plastic film for protection, if necessary. This is because damage to the cover can be prevented when small gravel or the like hits the lamp cover. As a suitable plastic film, for example, a film of polyester resin, polyethylene resin, polycarbonate resin, vinyl chloride resin, acrylic resin, polyurethane resin, polyolefin resin, vinylidene fluoride resin, etc., and the thickness thereof, Normal,
It is in the range of about 5-100 μm.

The lamp cover of the present invention has a light transmitting area adjacent to the light opaque area, that is, a light opaque area where it is not necessary to transmit light emitted from a lamp disposed in each lamp chamber. A colored film capable of exhibiting substantially the same hue as transmitted light in a region (here, light can be transmitted and light of a desired hue is obtained when the lamp is turned on) is attached.

Here, various regions can be considered as the light opaque region of the lamp cover, but usually the peripheral region of the light emitting opening of the lamp chamber. That is, the light-impermeable area is an area around an amber turn signal lamp or a colorless backup lamp as described in the section of the related art (this area is the same as that used for the stop lamp and the tail lamp). The stop lamp / tail lamp is a region separated by a lamp of another color (a red resin region is provided in this region), and the like. The light-impermeable region is usually in the form of an elongated slit or a combination thereof in accordance with the peripheral region of the light-emitting opening, but of course, other patterns are also applicable.

In the lamp cover of the present invention, a specific colored film as described in detail below is attached to a portion of the lamp cover which does not adversely affect the progress of light from the lamp, so that the appearance and design can be improved. Can realize a remarkable improvement. In particular, according to the present invention, by applying a striped or other shaped colored film finely cut corresponding to the light opaque region to a predetermined portion of a colored resin lamp cover, in resin molding or resin injection. A new and eye-catching beautiful appearance and design that could not be obtained substantially can be obtained.

The colored film may be affixed to the inner surface of the lamp cover (the surface on the lamp side) or the outer surface of the lamp cover (the outside air) in consideration of the type of vehicle to which the combination lamp is to be mounted and the main driving area. May be attached to the surface that contacts the surface. If necessary, the surface of the colored film may be provided with a pattern or the like which can contribute to the improvement of design. Various adhesives can be advantageously used as a means for attaching the colored film.

The colored film preferably comprises a substrate colored in a predetermined hue and a layer of an adhesive applied to one surface of the substrate. The colored substrate is not particularly limited as long as it has excellent colorability and has excellent weather resistance, which is a requirement required for a lamp cover, but is preferably a polyester film, a polyethylene film, a polycarbonate film, or a vinyl chloride film. , An acrylic film, a polyurethane film, a polyolefin film, a vinylidene fluoride film and the like. After mixing an appropriate colorant into the raw resin, these colored base materials can be manufactured to have a desired film thickness by using a conventional molding method such as a calendar molding method. Although the thickness of the colored base material can be widely changed according to the use site of the lamp cover and the like, it is usually in the range of about 5 to 500 μm, and more preferably in the range of about 20 to 100 μm. When the thickness of the base resin is less than 5 μm, it is no longer possible to obtain a film. On the other hand, when it exceeds 500 μm, the additional effect as a colored film cannot be obtained only by increasing the thickness.

In the colored film, for coloring the substrate,
Various colorants, that is, pigments or dyes can be used as long as the desired hue can be exhibited in the obtained colored base material. In the present invention, in particular, a dye having the same or similar hue and transparency as that used for coloring the lamp cover can be advantageously used. By coloring with such a specific dye, not only is it possible to obtain more vivid and beautiful coloration,
Since the light emission in the lamp cover and the color development in the colored film are integrated, the improvement in design is remarkable. Suitable dyes are not limited to those listed below, but include, for example, azo-based, Cr complex-based,
Co complex compounds and the like (all from the color index). Such dyes are, for example, trade names "Zapon Red335" (red dye) and trade name "Zapon Orange 251" (amber dye) from BASF, and trade names "ORACE" from Ciba Specialty Chemicals.
T ”series or from Clariant
Each is commercially available as the "avinyl" series. Further, the amount of such a dye to be mixed can be widely changed depending on the type of the dye to be used (also the hue), a desired color development level, and the like, but usually, based on the total amount of the base material, It is in the range of about 0-2% by weight.

The adhesive layer applied to one side of the colored substrate can be formed using an adhesive commonly used in the field of adhesive tapes, pressure-sensitive adhesive tapes and the like. Suitable adhesives include, for example, acrylic adhesives, polyurethane-based adhesives, polyester-based adhesives, and, in consideration of weather resistance and the like, acrylic adhesives can be advantageously used. it can. Although the thickness of such an adhesive layer can be varied in a wide range, it is usually in the range of about 10 to 500 μm, and more preferably in the range of about 20 to 100 μm. When the thickness of the adhesive layer is less than 10 μm, a satisfactory adhesive strength cannot be obtained. On the other hand, when the thickness exceeds 500 μm, the entire thickness of the colored film becomes very large. It cannot be used as a film. In fact, when it is attached to the lamp cover, there is a sense of incompatibility with the resin of the cover. Further, it is preferable to use a release liner on such an adhesive layer in order to facilitate handling and sticking of the lamp cover.

The colored film used in the present invention is preferably provided with a clear layer as the outermost layer to protect the colored film, particularly when it is used on the outer surface of a lamp cover. The clear layer desirably has weather resistance and heat resistance in addition to transparency, which is essentially an essential property, from the viewpoint of acting as a protective film. It is also desirable that the clear layer has good adhesion to the underlying colored substrate. Suitable resins for forming the clear layer are not limited to those listed below,
Examples include polyester resin, polyethylene resin, polycarbonate resin, vinyl chloride resin, acrylic resin, polyurethane resin, polyolefin resin, and vinylidene fluoride resin. Further, the clear layer can impart gloss to the surface of the lamp cover and improve the appearance.

In order to enhance the weather resistance of the clear layer,
It is preferable to mix an ultraviolet absorber. Suitable UV absorbers include, but are not limited to, benzotriazole UV absorbers, benzophenone UV absorbers, cyanoacrylate UV absorbers, and the like. Although the amount of the ultraviolet absorber added can be changed in a wide range, the transmittance of light at a wavelength of 300 nm is generally about 0.1.
The amount can guarantee 1% or less, preferably about 0.01% or less. This is because, when the light transmittance is higher than 0.1%, the light transmission proceeds and the fading of the colored film proceeds. When the amount of the ultraviolet absorber added is shown based on the total amount of the clear resin, it is usually in the range of about 1 to 10% by weight.

The thickness of the clear layer can be varied widely depending on the desired effect and the like, but is usually in the range of about 10 to 500 μm, and more preferably in the range of about 20 to 100 μm. is there. When the thickness of the clear layer is less than 10 μm, the effect as a protective film cannot be obtained. Conversely, when the thickness exceeds 500 μm, the entire thickness of the colored film becomes very large. It cannot be used as a film.

The color film used in the lamp cover of the present invention has a CIE1976 (L ^* a ^* b ^* ) color system in which the two-year color difference on the surface is represented by the following formula: color difference ΔE ^* (L ^* a ^*). b ^* ) = ｛(ΔL ^* ) ² + (Δa ^* ) ² +
(Δb ^* ) ² ｝ ^1/2 , where L ^* is the lightness index and a ^* and b ^* are each the perceived chromaticity index, when ΔE ^* = 3 or less is there. That is, when the colored film of the present invention is used, the weather resistance can be improved, so that the same good dye color appearance as the dye-colored resin can be stably maintained for a long period of time.

[0036]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be understood that the present invention is not limited by these examples. FIG. 2 is a perspective view showing an example of use of the rear combination lamp according to the present invention in a passenger car, and FIG.
FIG. 4 is a front view of the rear combination lamp of FIG.
FIG. 4 is a sectional view taken along line IV-IV of the rear combination lamp of FIG. 3.

In the case of the rear combination lamp 20 shown in FIG. 2, only the left rear combination lamp is shown in FIG. 2, but the rear combination lamps are vertically arranged on both left and right sides of the rear portion of the vehicle body. Each rear combination lamp 20 includes, in order from the top, a red stop lamp and tail lamp (R), an amber turn signal lamp (A), and a colorless backup lamp (C).

As shown, the lamp cover 10 of the rear combination lamp 20 is the same as the one used for coloring the lamp cover of the stop lamp and the tail lamp so as to surround the amber turn signal lamp and the colorless backup lamp. An inverted F-shaped colored film 12 colored with a red dye is attached. As shown in FIGS. 4 and 5, the coloring film 12 is attached to the main body 15 of the lamp cover 10 via the adhesive layer 14 so as to be on the inner surface of the lamp cover 10 (on the side of the lamp 22). . The coloring film 12 includes a coloring base 13 and an adhesive layer 14, as shown in FIG. In the illustrated example, the colored film 1 is combined with the lamp cover 10.
By sticking No. 2, the design and visibility when the lamp is lit or not lit can be greatly improved.
In particular, since the same dye is used for coloring purposes in the colored film and the lamp cover, the hue and transparency match,
A high degree of design can be obtained. In addition, since the plastic rim 11 coated with metallic paint is arranged around the lamp cover 10, the design can be improved.

The illustrated rear combination lamp 20
As shown in FIG. 4, each of the stop lamp / tail lamp (R), the turn signal lamp (A), and the backup lamp (C) has a partition wall 23.
In each of the lamp chambers 21, a lamp 22 having a predetermined brightness is fitted in a socket (not shown). Lamp room 21
Has one surface opened, and the light exit aperture 25
Is formed. A concave mirror structure is provided on the bottom wall of the lamp chamber 21 around the lamp 22 so that the lamp 2
The second light can be collected and emitted to the outside of the room from the light emission opening 25. Further, the light emission openings 25 of the respective lamp chambers 21 are covered with a common lamp cover 10.

In the above example, a colored film was attached to the inner surface of the cover body to complete the lamp cover of the present invention. Alternatively, in the present invention, the lamp cover of the present invention may be completed by attaching a colored film to the outer surface of the cover body (the surface in contact with the outside). FIG. 6 shows such a modified example, in which a colored base material 13 is adhered to the outer surface of a cover body 15 via an adhesive layer 14. In the case of the colored film 12, since it is exposed outdoors, the protective clear layer 16 covers the colored substrate 13.

In the case of the rear combination lamp 20 described above, an example is shown in which an inverted F-shaped colored film 12 is attached to a predetermined portion of the lamp cover 10. However, in the rear combination lamp 20 of the present invention, in order to change the design and appearance, the type, number, arrangement order,
The pattern of the colored film can be arbitrarily changed. For example, even when the type, number, and arrangement order of the lamps are the same as those in the above-described example, by changing the pattern of the colored film 12 as shown in FIGS. Can be obtained. In spite of such a change, the same mold can be used for manufacturing the lamp cover 10.

Referring to FIG. 7, the illustrated lamp cover 1 is shown.
In the case of 0, a striped colored film 12 which is colored with the same red dye as that used for coloring the lamp cover of the stop lamp and the tail lamp is attached to the upper and lower sides of the lamp cover of the colorless backup lamp, respectively. I have. In the case of the lamp cover 10 of FIG. 8, a U-shape colored with the same amber dye as that used for coloring the lamp cover of the turn signal lamp is provided on three sides of the lamp cover of the colorless backup lamp. Is attached. Preparation and Evaluation of Colored Film In order to evaluate the characteristics of a rear combination lamp manufactured by attaching a colored film having a layer configuration as shown in FIG. 6 to a lamp cover as shown in FIG. Was prepared.

For the preparation of a colored base material, a two-pack type polyurethane (polyester polyol / isophorone diisocyanate trimer) which has been used outdoors is prepared, and a benzotriazole-based polyurethane is used in an amount of 2.5% by weight based on the total amount. An ultraviolet absorber (trade name “Tinuvin 384”, manufactured by Ciba-Geigy) was added. Further, to the obtained mixture, the following red dye or amber dye was mixed in the amount described for coloring purpose. In selecting the following dyes, taking into account the hue and transparency of the red and amber resin covers of the rear combination lamps mounted on commercially available passenger cars, a hue and transparency similar to those can be generated. Considered. Red dye: trade name “ZAPON Red 335”, manufactured by BASF, 1.5% by weight based on the total amount Amber dye: trade name “ZAPON Orange 251”, manufactured by BASF, 1. The resulting mixture was uniformly stirred to prepare a molding composition for a red-colored base material and a molding composition for an amber-colored base material.

Next, for the preparation of the clear layer, a two-pack polyurethane having been used outdoors (polyester polyol available from Bayer under the trade name “Desmophen 670”) / Bayer under the trade name “Desmofedur” A commercially available isophorone diisocyanate trimer) is prepared, and a benzotriazole ultraviolet absorber (trade name "Tinuvi") is used in an amount of 10% by weight based on the total amount.
n 384 ", manufactured by Ciba-Geigy). A coating composition for the clear layer was obtained.

Subsequently, the molding composition for a red-colored substrate or the molding composition for an amber-colored substrate and the coating composition for a clear layer prepared as described above are molded by a simultaneous extrusion molding method. A two-layer structure comprising a colored and transparent (1. red, 2. amber) colored base material having a film thickness of about 50 μm and a colorless and transparent clear layer having a film thickness of about 50 μm was obtained. On the side without the clear layer of the obtained structure, the product number “1429F-
An acrylic pressure-sensitive adhesive available as “2” was laminated with a layer thickness of about 30 μm. A colored film colored red (hereinafter, referred to as film R) and a colored film colored amber (hereinafter, referred to as film A) were obtained.

The two types of colored films prepared as described above were adhered to a transparent acrylic plate, left outdoors for two years under a vertical or horizontal arrangement condition, and were exposed to the weather and the temperature. After completion of the outdoor exposure test, by comparing the change in color difference of each test colored film with the unexposed test colored film separately prepared as a control,
Visual evaluation revealed that there was no noticeable change in color difference despite exposure to severe conditions.

Next, for the same test colored film,
CIE1976 (L ^* a ^* b ^* ) color system represented by the following equation: color difference ΔE ^* (L ^* a ^* b ^* ) = ｛(ΔL ^* ) ² + (Δa ^* ) ² +
(Δb ^* ) ² ｝ ^1/2 (where L ^* is the lightness index, and a ^* and b ^* are each the perceived chromaticity index). The measurement results as shown in Table 1 were obtained.

[0048]

[Table 1]

As can be understood from the above evaluation results,
When a lamp cover is produced using the colored film of the present invention, a combination lamp not only having no problem in outdoor use but also excellent in external appearance can be provided.

[0050]

As described above, according to the present invention, a combination lamp excellent in design and visibility can be manufactured easily and inexpensively without lowering the yield by using a small number of dies. It is possible. Further, according to the present invention, even if a minor change is made in the same vehicle model, when manufacturing the combination lamp after the change,
Existing molds can be used as they are without making new molds.

Further, according to the present invention, red / amber /
It has a resin area repeated like red / amber / ...
In addition, it is possible to provide a combination lamp capable of emitting light having excellent design properties derived from the colored resin or light emission comparable thereto. Furthermore, according to the present invention, a lamp cover useful for manufacturing the combination lamp of the present invention can be provided.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a conventional rear combination lamp.

FIG. 2 is a perspective view showing an example of using a rear combination lamp according to the present invention in a passenger car.

FIG. 3 is a front view of the rear combination lamp of FIG. 2;

4 is a line segment IV- of the rear combination lamp of FIG.
FIG. 4 is a cross-sectional view along IV.

FIG. 5 is a sectional view showing a preferred embodiment of a lamp cover according to the present invention.

FIG. 6 is a sectional view showing another preferred embodiment of the lamp cover according to the present invention.

FIG. 7 is a front view showing another preferred embodiment of the rear combination lamp according to the present invention.

FIG. 8 is a front view showing still another preferred embodiment of the rear combination lamp according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Lamp cover 11 ... Edge 12 ... Colored film 13 ... Colored base material 14 ... Adhesive layer 15 ... Cover body 16 ... Clear layer 20 ... Rear combination lamp 21 ... Lamp chamber 22 ... Lamp 23 ... Partition wall 25 ... Light emission opening

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) F21Q 1/00 K

Claims (9)

[Claims] 1. A lamp structure comprising at least two lamp chambers each having a lamp and having a light emitting opening, wherein the lamp chambers are arranged adjacent to each other, and The light-emitting opening of the lamp chamber is covered with a lamp cover made of a light-transmitting resin, and a light-impermeable region of the lamp cover that does not need to transmit the irradiation light from the lamp is adjacent to the region. And a colored film capable of exhibiting substantially the same hue as the light transmitted through the light transmitting region. 2. The automotive lamp structure according to claim 1, wherein the light-impermeable area of the lamp cover is a peripheral area of a light-emitting opening of the lamp chamber. 3. The colored film comprises a substrate colored with a dye so as to exhibit the hue, and an adhesive layer applied to one surface of the substrate. 3. The lamp structure for an automobile according to 2. 4. The lamp structure according to claim 3, wherein the adhesive is an acrylic adhesive. 5. The colored film according to claim 3, further comprising a clear layer as an outermost layer.
Or the lamp structure for an automobile according to 4. 6. The color film according to claim 1, wherein ΔE ^* = 3 or less when a two-year-old color difference on a surface of the colored film is represented by a CIE1976 color system.
The vehicle lamp structure according to any one of claims 5 to 10. 7. A stop lamp and a tail lamp, which are used as a rear combination lamp,
The vehicle lamp structure according to any one of claims 1 to 6, wherein at least two of a turn signal lamp and a backup lamp are incorporated in an arbitrary pattern and combination. 8. A divided-type lamp structure having at least two lamp chambers each having a lamp disposed therein, wherein the lamp structure has a shape and a size that cover at least a light emitting surface of the lamp chamber. , Formed by molding a light-transmitting resin, and if necessary, colored in a different hue for each of the lamp chambers, and in a light-impermeable region where it is not necessary to transmit light emitted from the lamp. (2) An automotive lamp cover, characterized in that a colored film capable of exhibiting substantially the same hue as transmitted light in a light transmitting region adjacent to the region is attached. 9. The automotive lamp cover according to claim 8, wherein the colored film is colored with a dye.