JP2000311506A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent false recognition of a signal lamp. SOLUTION: A colored membrane 112 which is light transmissive and has an almost same color as a colored cap is subjected both color processing as well as surface processing at an inner surface 11 of a lamp housing 1. Consequently, outgoing light of reflection light L2 that is strong light L1 enters a lighting room and is emitted to the outside obtains a functional color as same as outside irradiating light which is emitted from a light source bulb and passes through a colored cap and a colored lens, because the strong light L1 such as sun light e.g. enters the lighting room through the colored lens and is reflected at the inner surface 11 of the lamp housing 1, and is transmitted through the colored membrane 112 that has an almost same color as the colored cap when the reflection light L2 is emitted again to the outside through the colored lens. Thus, a functional color does not weaken by outgoing light of the functional color when a light source bulb is lit. There is no fear of a false lighting of a color other than the functional color by means of outgoing light of a functional color when the light source bulb is not lit. Consequently, it is possible to prevent the missing of the functional color.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turn signal lamp, for example, in which a functional color (for example, amber) of external irradiation light when lit and a color of a colored lens (for example, pink) when not lit. Or smoke pink,
(Hereinafter, simply referred to as a pink color), which relates to a vehicular lamp different from the above. Particularly, the functional color does not fade when lit, and there is no possibility of pseudo lighting of colors other than the functional color when not lit. As a result, the present invention relates to a vehicular lamp that can prevent functional colors from being lost and prevent false recognition of a signal light.

[0002]

2. Description of the Related Art A vehicle lamp of this type will be described below with reference to FIGS. This example describes a turn signal lamp among the rear combination lamps.

[0003] In the figure, RC is a rear combination lamp. This rear combination lamp R
C is configured by combining an upper turn signal lamp T and a lower tail stop lamp S. Also, the illustrated rear combination lamp R
C is installed on the left side of the rear part of the vehicle (not shown). The right side in FIG. 2 is located at the center of the vehicle, and the left side in FIG. 2 is located on the left side of the vehicle. further,
The rear combination lamp RC has a wraparound portion from the front side (rear side of the vehicle) to the side surface.

In the turn signal lamp T, a lamp chamber 3 is defined by a lamp housing 1 and a colored lens 2. The lamp housing 1 has an opening 10 from the front side to the side. The inner surface 11 of the lamp housing 1 is subjected to a base processing (surface treatment) for processing a reflection surface such as an aluminum vapor-deposited film. That is, the inner surface 11 of the lamp housing 1 forms a kind of reflection surface. On the other hand, the colored lens 2 is colored pink in this example, and the colored lens 2 is integrally formed on the upper part of the outer lens 20 of the rear combination lamp RC, and has a cross-sectional shape. Is wrapped around from the front side to the side. A prism element group 2 is provided on the inner surface of the colored lens 2.
1, 22 are provided. Prism element group 2 of this example
Reference numerals 1 and 22 denote prism element groups having a vertical tone (for example, a convex spherical prism element group, a so-called square fisheye prism element group).
21 and a group of prism elements having a horizontal tone (for example, a group of prism elements having a horizontal convex cylindrical shape, a so-called horizontal cylindrical prism element group) 22 are provided alternately vertically. Note that the prism element groups 21 and 22 may be provided on the outer surface or on both inner and outer surfaces in addition to the inner surface of the colored lens 2. Also,
A transparent colored lens may be used without providing the prism element group. In this case, the inner surface 11 of the lamp housing 1
It is a free-form surface that controls the light distribution pattern.

The above-described lamp chamber 3 is defined by fixing the outer lens 20 and the colored lens 2 to the lamp housing 1 and covering the opening 10 of the lamp housing 1 with the colored lens 2. Becomes In this lamp room 3, a light source bulb 4 and a coloring cap 5 are arranged, respectively. The light source bulb 4 is provided with a socket 40 and a packing 4 at an edge of the through hole 12 of the lamp housing 1.
It is detachably attached via 1 or the like. On the other hand, the coloring cap 5 is colored green, for example, and has a cap shape with one end closed in a hemispherical shape and the other end opened. The open end of the colored cap 5 is fixed to the edge of the through hole 12 of the lamp housing 1, and the colored cap 5 covers the light source bulb 4.

Next, the operation of the turn signal lamp T configured as described above will be described. First, the light source bulb 4 is turned on. Then, the light from the light source bulb 4 passes through a green colored cap 5 and a pink colored lens 2 and is given a predetermined functional color, such as amber in this example, by a color adding action of the light. Irradiated in a light distribution pattern. When the turn signal lamp T is viewed from the outside with the light source bulb 4 turned off, the colored lens 2
Has a pink color. As described above, in the above-described turn signal lamp T, the functional color of the amber color of the external irradiation light at the time of lighting and the color of the pink colored lens at the time of non-lighting are different. There is such an effect that a dynamic change can be obtained between them.

[0007]

However, in the above-described conventional vehicle lighting device, the light source bulb 4 is simply covered with the colored cap 5 in the lamp room 3, so that the sunlight or the following vehicle can be used. Intense light L1 (indicated by solid arrows in FIGS. 4 and 5), such as light from the light source, enters the lamp chamber 3 through the colored lens 2, and the light L1 particularly stands on the inner surface 11 of the lamp housing 1. The light is reflected by a wall (for example, a substantially flat wall on the side in FIG. 10, a substantially flat wall on the lower side in FIG. 11, and the like), and its reflected light L2 (indicated by a dashed arrow in FIGS. 4 and 5). Through the colored lens 2 again to the outside as pink light. For this reason, when the light source bulb 4 is turned on, the amber functional color is weakened by the pink emission light. Further, when the light source bulb 4 is not lit, there is a possibility that the pink light emitted may cause pseudo-lighting of a pink color other than the amber functional color. As a result, there is a problem that the functional color is lost and the signal lamp may be erroneously recognized. In particular, in the case of a lamp having a wraparound portion from the front side to the side surface and a standing wall as in the example shown in the figure, the above-described problem appears remarkably.

An object of the present invention is to prevent a functional color from fading during lighting and from a possibility of pseudo-lighting of a color other than the functional color during non-lighting, thereby preventing the functional color from being lost. It is another object of the present invention to provide a vehicular lamp capable of preventing erroneous recognition of a signal lamp.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of forming a light-transmitting colored film having substantially the same color as a colored cap on an inner surface of a lamp housing by surface treatment. It is characterized by being given together with.

As a result, in the vehicle lighting device of the present invention, with the above structure, strong light such as sunlight enters the lamp room through the colored lens, is reflected by the inner surface of the lamp housing, and
When the reflected light exits again through the colored lens, it passes through the colored film that is light-transmissive on the inner surface of the lamp housing and is substantially the same color as the colored cap. The above-mentioned reflected light, which is the reflected light that has entered and exited, is light from the light source bulb, and a functional color is obtained in the same manner as the external irradiation light that has passed through the colored cap and the colored lens. For this reason, when the light source bulb is turned on,
The emitted light of the above-mentioned functional color does not fade the functional color. In addition, when the light source bulb is not turned on, there is no fear of pseudo lighting of a color other than the function color due to the emission light of the above-described function color. As a result, it is possible to prevent the functional color from being lost and to prevent erroneous recognition of the signal light.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicular lamp according to the present invention will be described below with reference to FIG. This example describes a turn signal lamp among the rear combination lamps. In the drawing, the same reference numerals as those in FIGS. 2 to 5 indicate the same components. Each of the layers 110, 111, 11 in FIG.
2 is shown thicker than the actual one.

In the vehicular lamp according to the embodiment of the present invention, a colored film 112 which is light-transmissive and has a green color substantially the same as that of the colored cap 5 is formed on the inner surface 11 (particularly, a standing wall) of the lamp housing 1. Is applied together with the surface treatment. Inner surface 11 of this lamp housing 1
As shown in FIG. 1, a base coat film (for example, a transparent one-liquid acrylic type) is formed on a surface (inner surface) of a base material (a base material, for example, a synthetic resin such as BMC) of the lamp housing 1.
The base coating film 110 is coated (deposited) with an aluminum vapor-deposited film 111, and the surface (surface) of the aluminum vapor-deposited film 111 is coated with a green-colored reflective surface. A top coat colored coating film (colored film) 112 as a protective film is applied. As described above, the inner surface 11 of the lamp housing 1 is subjected to a coloring treatment (top coat coloring coating film 112) with a green color similar to the green color of the coloring cap 5 together with the surface treatment.

The top coat colored coating film 112 is, for example, a color clear coating film, and is formed of a one-component acrylic type or a two-component urethane type. That is, the top coat colored coating film 112 is formed by coating a varnish made of an acrylic resin or a polyol resin excellent in heat resistance and weather resistance with an organic pigment (for example, green is halogenated copper phthalocyanine green, etc. Yellow is isoindolinone or the like such as quinacridone red) or an inorganic pigment, and is obtained by dispersing and coloring. Since the top coat colored coating film 112 has high transparency, even if it is applied to the surface of the aluminum vapor-deposited film 111 on the reflective surface, the high gloss of the aluminum vapor-deposited film 111 is not impaired. Further, 3 to 25 μm in consideration of the color tone density.
m in the range of about m in thickness.
2 is applied.

Since the vehicular lamp of the present invention in this embodiment has the above-described configuration, as shown in FIGS. 1, 4 and 5, strong light such as sunlight or light from a following vehicle is used. When the light L1 enters the lamp chamber 3 through the pink colored lens 2 and is reflected by the inner surface 11 of the lamp housing 1, and the reflected light L2 again exits through the pink colored lens 2, The light passes through the colored film 112, which is light-transmissive on the inner surface 11 of the lamp housing 1 and has a green color substantially the same as the green color of the colored cap 5. As a result, the emitted light L2, which is the above-mentioned strong light L1 and is the above-mentioned reflected light L2 that has entered the lamp chamber 3 and exited outside, is light from the light source bulb 4 and is a green colored cap 5 and An amber-colored functional color is obtained in the same manner as the external irradiation light that has passed through the pink colored lens 2. For this purpose, the light source bulb 4
At the time of lighting, the amber function color does not fade due to the emission light L2 of the amber function color described above. In addition, when the light source bulb 4 is not lit, there is no fear of pseudo lighting of a color other than the amber functional color, for example, pink, due to the emitted light L2 of the amber functional color. As a result, it is possible to prevent the functional color from being lost and prevent the signal light from being erroneously recognized. In particular, even in the case of a lamp having a wraparound portion from the front side to the side surface and having a standing wall on the inner surface 11 of the lamp housing 1 as in the illustrated example, the above-described effects can be sufficiently obtained. Can be achieved.

In the above-described embodiment, the turn signal lamp T of the rear combination lamp RC has been described. However, the vehicle lamp of the present invention is provided with other vehicle lamps, that is, a predetermined color lens and a colored cap. The present invention can be applied to a vehicular lamp in which the functional color is different from that of the colored lens when the functional color is not lit.

[0016]

As is apparent from the above description, the vehicular lamp according to the present invention is provided with a coloring treatment of a colored film, which is light-transmissive and has substantially the same color as the colored cap, on the inner surface of the lamp housing together with the surface treatment. When strong light such as sunlight enters the lamp chamber through the colored lens and is reflected by the inner surface of the lamp housing, and the reflected light exits again through the colored lens, the lamp housing Since the light is transmitted through the colored film that is light-transmissive on the inner surface of the light-emitting element and is substantially the same color as the colored cap, the emitted light that is the above-mentioned strong light, which is the above-mentioned reflected light that has entered the lamp chamber and exited outside, A functional color can be obtained in the same manner as light emitted from a bulb and externally irradiated through a colored cap and a colored lens. For this,
When the light source bulb is turned on, the functional color is not faded by the emitted light of the functional color described above. Further, when the light source bulb is not lit, the emitted light of the above-described functional color causes
There is no danger of false lighting of colors other than the functional colors. As a result, it is possible to prevent the functional color from being lost and prevent the signal light from being erroneously recognized.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a surface treatment and a coloring treatment of an inner surface of a lamp housing showing an embodiment of a vehicular lamp of the present invention.

FIG. 2 is a front view showing a conventional vehicle lamp (turn signal lamp of the rear combination lamp).

FIG. 3 is a view taken in the direction of the arrow III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG. 2;

FIG. 5 is a sectional view taken along line VV in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lamp housing, 10 ... Opening, 11 ... Inner surface (reflection surface, surface treatment, coloring process, undercoating), 110 ... Base coat coating film 110, 111 ... Aluminum vapor deposition film, 112 ...
Top coat colored coating film (colored film), 12: through-hole, 2: colored lens, 20: outer lens, 21: vertical-tone prism element group, 22: horizontal-tone prism element group, 3: lamp room, 4
... Light source bulb, 40 ... Socket, 41 ... Packing, 5 ...
Colored cap, RC… Rear combination lamp,
T: turn signal lamp, S: tail stop lamp, L1: strong light such as sunlight, L2: reflected light.

Claims (1)

[Claims] 1. A lamp chamber is defined by a lamp housing and a colored lens, a light source bulb and a colored cap are respectively disposed in the lamp chamber, and an inner surface of the lamp housing is made of an aluminum vapor-deposited film or the like. The processing is performed, and by turning on the light source bulb, a light from the light source bulb passes through the coloring cap and the coloring lens, and is irradiated with a predetermined functional color to the outside. A lighting device for a vehicle, wherein the inner surface of the lamp housing is colored together with the surface treatment by a coloring film that is light-transmissive and has substantially the same color as the colored cap.