JP2002279808A - Light fixture for use in vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light fixture for use in vehicle realizing a lighting with function color required to the light fixture, with improved appearance when not lighting, and low cost. SOLUTION: For the light for use in vehicle, comprising a light source 43 emitting almost white colored light, a reflector 2 reflecting the light emitted from the light source 43, and a lens 33 transmitting and emitting the light reflected by the reflector 2 outward, the lens 33 and a top coat film 25 of a reflection film forming a reflection surface of the reflector 2 are colored with a light color similar to the function color of the light irradiated from the lighting device. Even when the color of the lens 33 can not be made up of original lens color of functional color, and the thickness of the lens 33 can not be made thick, it is possible to turn the irradiation light into a light with original function color by reflecting the white light of the white bulb 43 with the reflection surface of the reflector 2, and emitting outside through the lens 33. By the above, the color of the lens becomes inconspicuous when not lighted, and the cost is reduced by disusing an inner lens.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp used for a vehicle such as an automobile, and more particularly, to a vehicle which realizes lighting in a required functional color while improving appearance and reducing cost. Lighting equipment.

[0002]

2. Description of the Related Art In a lamp for a vehicle such as an automobile, particularly a lamp such as a tail lamp or a turn signal lamp which is required to be lit in a required functional color, a bulb (light bulb) is used as a structure for obtaining the functional color. ) Is provided to obtain the functional color by the emission color of the bulb. Also, there is a first lamp structure in which a lens in front of the lamp is colored so that white light emitted from a white bulb is transmitted through the lens. There is a second lamp structure which is colored to obtain the functional color. For example,
In the case of a turn signal lamp, it is required to be lit in a functional color of amber, so in the first lamp structure, a colorless or white lens is used for the lens, and amber is used for the bulb. I have. In the second lamp structure, a white bulb is used for the bulb, and amber is used for the lens.

In the first lamp structure described above, when the lamp is not lit, the bulb colored through the lens is exposed outside the lamp, so that the lens surface is colored in a bulb color depending on the angle at which the lamp is viewed. Or the colored bulb can be seen as it is, causing a problem that the appearance of the lamp is poor. On the other hand, in the second lamp structure, since the bulb is white, there is no problem as in the first lamp structure. However, in order to obtain a target functional color, the lens is adjusted to the functional color. In this case, if a relatively deep functional color is required as in the case of the turn signal lamp described above, it is necessary to color the lens darker or to form the lens thicker. There is.

[0004]

However, when this kind of lamp is designed as a composite lamp such as a rear combination lamp, the following problems occur. Considering the case where the turn signal lamp is configured as a rear combination lamp together with a tail lamp and a backup lamp as in the above-described example, in this rear combination lamp, the red of the tail lamp, the white of the backup lamp, and the amber color of the turn signal lamp are used. Are mixed. Therefore, when the entire rear combination lamp is to be put together in a red-based design, the amber-colored lens becomes extremely noticeable, causing a design problem. Therefore, it is required that the amber color of the lens of the turn signal lamp be inconspicuous, but in this case, the lens of the turn signal lamp cannot be colored in a dark amber color, and the turn signal lamp is turned on. In this case, the lighting color becomes lighter than the required functional color. On the other hand, when a rear combination lamp is configured, the lens of each lamp is usually formed integrally, but in this case, only the lens is thickened to obtain a required functional color of the turn signal lamp. Even if an attempt is made to form such a lens, it is not preferable to increase the thickness of the lens alone in view of the balance between the thickness of the lens and another lens, resulting in a lighter color than the functional color required for the turn signal lamp.

As described above, it has been conventionally proposed to use an inner lens to solve the problem that it is difficult to obtain a required functional color. That is, an inner lens is provided inside a lens (outer lens), and the inner lens is colored in a required amber color. With this configuration, even when the amber color of the outer lens is made pale and thin, the white light emitted from the bulb is colored amber when passing through the inner lens and is further transmitted through the outer lens. , It is possible to light the required amber color as a result. However, in this lamp structure, the number of parts increases because the inner lens is provided, and a problem arises in that the cost of the lamp increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular lamp which realizes lighting with a required functional color, improves the appearance when not lit, and reduces the cost. is there.

[0007]

SUMMARY OF THE INVENTION A vehicular lamp of the present invention comprises:
In a vehicle lighting device including a light source that emits substantially white light, a reflecting surface that reflects light emitted from the light source, and a lens that transmits light reflected by the reflecting surface and radiates the light to the outside, It is characterized in that the color and the color of the reflecting surface are colored in a light color similar to the functional color when the lamp is turned on.

[0008] Here, a reflective film having a color dark enough to constitute the functional color in synergy with the color of the lens is formed on the reflective surface. Further, it is preferable that the reflection film includes a coating film coated with a paint mixed with a required coloring material.

According to the present invention, even when the lens color cannot be formed to the original functional color and the lens thickness cannot be increased, the white light from the white bulb can be formed. By reflecting light on a reflective surface having light reflective characteristics of the same color as the lens, and irradiating the outside through the lens, the lens has a synergistic effect of the light reflective characteristics of the reflective surface and the light transmission characteristics of the lens. It is possible to make the light that is transmitted through and radiated to the outside be the color light of the original functional color. Thereby, the color of the lens does not become conspicuous at the time of non-lighting, and the appearance of the lamp does not deteriorate. Further, there is no problem in molding the lens with resin, and the cost is not increased because the inner lens is not required.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an embodiment in which the present invention is applied to a combined lamp mounted on a vehicle, in this case, a rear combination lamp in which a tail & stop lamp, a backup lamp, and a turn signal lamp are integrated, and FIG. FIG. 3 is a schematic perspective view exploded into parts. In the rear combination lamp RCL, a partition wall 12 is formed so as to protrude forward in a required front shape on an inner surface of a lamp body 1 formed of a resin having a container shape and having a front opening 11. Each lamp room R1, R2, R3 of the stop lamp T & SL, the backup lamp BUL, and the turn signal lamp TSL is defined. An aluminum film is formed on the inner surface of the lamp body 1 by vapor deposition or the like, and the aluminum film forms a reflection surface of each of the lamp chambers R1, R2, and R3. On the other hand, in the lamp room R3 of the partitioned turn signal lamp TSL, a reflector 2 having a shape and dimensions to be housed inside the lamp room R3 is provided in a container shape with an open front surface. The reflector 2 is formed by resin molding or the like. A flange 22 is integrally formed along the outer periphery of the opening edge of the front opening 21, and the rear end of the flange 22 is formed on the partition 12 of the lamp body 1. It is integrally attached to the lamp body 1 by bonding or welding to the front surface. And turn signal lamp TS
In L, a reflective surface having a required color is formed by the reflector 2 as described later.

An outer lens is provided on the front surface of the lamp body 1, and a peripheral portion 34 of the outer lens 3 is provided with respect to a peripheral flange portion 13 provided on a peripheral portion of the front opening 11 of the lamp body 1. Are integrally attached by welding. In the outer lens 3, lenses 31, 32, and 33 corresponding to the respective lamps are integrally molded with resin. The lens 31 corresponding to the tail & stop lamp T & SL is colored red and corresponds to the backup lamp BUL. The lens 32 corresponding to the turn signal lamp TSL is colored white and a little reddish amber. Here, the light amber color of the lens 33 of the turn signal lamp is slightly lighter than the amber color, which is the original function color of the turn signal lamp, and has a color close to red of the lens 31 of the tail & stop lamp. The color is formed. Therefore, the appearance color of the rear combination lamp RCL when it is not lit is configured such that the amber color of the lens 33 of the turn signal lamp disposed in the red lens 31 is a light inconspicuous color lens having a red color. Will be. Since the lens 32 of the backup lamp is white, that is, achromatic, it does not stand out. Here, required lens steps are formed on each of the lenses 31, 32, and 33. In particular, a retroreflection step 35 is formed on the lens 31 of the tail & stop lamp. Is omitted.

The tail and stop lamp T &
In the SL, the bulb socket 5 supporting the white bulb 41
1 is attached to a socket mounting hole 14 opened on the back of the lamp body 1. Therefore, when the white bulb 41 is turned on, the light emitted from the white bulb 41 is reflected by the reflection surface of the aluminum film on the inner surface of the lamp room R1, passes through the red lens 31, and is emitted to the outside. It will be lit in color. In the tail & stop lamp, an inner lens may be provided, but an example of a configuration in which the inner lens is not provided is shown. In the backup lamp BUL, a socket mounting hole (not shown) is opened in the lamp body 1, and a bulb socket (not shown) supporting the white bulb 42 is mounted in the socket mounting hole. Therefore, at the time of lighting, the light emitted from the white bulb 42 is reflected by the reflecting surface of the aluminum film on the inner surface of the lamp room R2, and is lit in white functional color through the white lens 32.

On the other hand, in the turn signal lamp TSL, a socket mounting hole 15 is opened in the lamp body 1, and a bulb socket 53 supporting a white bulb 43 is mounted in the socket mounting hole 15. As a result, the white bulb 43 is disposed in the reflector 2 through the valve insertion hole 23 opened in the reflector 2. The inner surface of the reflector 2 constituting the reflection surface of the turn signal lamp is colored. Here, the inner surface of the reflector 2 is shown in FIG.
As shown in a partially enlarged view of FIG. 2, a reflective film having a two-layer structure is formed by applying a top coat film 25 on the surface of an aluminum film 24 on which aluminum is deposited. By mixing a coloring material into the coating material of the top coat film 25, a desired color is colored by the top coat film 25.
As described above, the reflection surface on the inner surface of the reflector 2 has a laminated film structure of the aluminum film 25 for increasing the reflectance and the colored top coat film 25 for making the reflected light have a required color. While securing the required light reflectance,
It is possible to configure as a reflection surface that reflects the reflected light as required color light. When the required light reflectance can be obtained only with the top coat film 25, the aluminum film 24 can be omitted.

The top coat film 25 is colored amber, which is slightly bluish and has a certain darkness. Figure 4 shows the turn signal lamp TSL
3 shows the spectral characteristics of light transmission (L1) of the lens 33 and the spectral characteristics (T1) of light reflection of the top coat film 25. Light transmission characteristics T1 of the lens 33
Is an amber color having a peak on a slightly longer wavelength side, that is, a characteristic of transmitting an amber color and a region on a longer wavelength side than that, and the light reflection characteristic of the top coat film 25 is slightly shorter on the shorter wavelength side. Is a characteristic of reflecting an amber color and a region on a shorter wavelength side than the amber color. In other words, they both transmit and reflect light of the same wavelength region, in other words, light of a similar color region, but their peak wavelengths are slightly shifted to opposite sides.

In the rear combination lamp RCL configured as described above, the white bulbs 41, 42, and 43 of the respective lamps are not lit when not lit, and the external appearance of the rear combination lamp RCL viewed from the front is that external light is not emitted. The appearance is reflected by the outer lens 3. As described above, the lens 31 corresponding to the tail & stop lamp T & SL is colored red and the backup lamp BUL
Is white, and the lens 33 corresponding to the turn signal lamp TSL is colored a little reddish amber, so that the amber color of the lens 33 of the turn signal lamp that is particularly conspicuous is A part of the area of the red-colored lens 31 is present as a slightly reddish light amber-colored lens, and as a result, the amber-colored lens disposed in the red-colored lens does not stand out. It is effective in satisfying the design required for the rear combination lamp.

On the other hand, when the turn signal lamp TSL is turned on, as shown in FIG.
The white light emitted from 3 is reflected by the reflecting surface of the reflector 2 and thereafter passes through the lens 33 and is emitted to the outside. At this time, since the light reflection characteristic of the top coat film 25 constituting the reflection surface of the reflector 2 is the characteristic of T1 shown in FIG. 4, the reflected light becomes bluish amber color light, and Since the light transmission characteristic is the characteristic indicated by L1 in the figure, the blue component of the reflected light in the external irradiation light is canceled by the reddish lens 33. That is, due to the synergistic effect of the light reflection characteristic of the top coat film 25 and the light transmission characteristic of the lens 33, the light is emitted to the outside as color light having the spectral characteristic of S1 in FIG. This allows
The color light irradiated to the outside becomes color light having a high amber color purity, and at the same time, becomes a color light having a wide peak width in the amber region due to a slight difference in peak wavelength between T1 and L1. That is, lighting is performed with an amber color darker than the amber color of the lens 33, in other words, an amber color as an original functional color of the turn signal lamp.

As described above, since the lens of the turn signal lamp is formed integrally with the lens of another lamp, the color of the lens cannot be formed to the original functional color, and the other lens cannot be formed. Even when the lens thickness cannot be increased due to the adjustment of the thickness of the lens, by providing a reflector having light reflection characteristics of the same color as the lens, the light transmitted through the lens and radiated to the outside can be obtained. Can be made into color light in which the original functional color is enhanced. Therefore, the appearance of the lamp does not deteriorate when it is not lit, and there is no problem in molding the lens with resin.In addition, the cost is increased because the inner lens is not required. Absent.

In the above-described embodiment, in order to form the reflection surface of the turn signal lamp, a configuration is adopted in which a reflector separate from the lamp body is integrally attached to the lamp body. When the lamp chamber of the turn signal lamp is partitioned by a partition provided on the body, and the inner surface of the lamp body can be colored in a required color as a reflection surface, the inner surface of the lamp body is used as a reflection surface. It is also possible to configure a lamp. With such a configuration, the reflector as a separate member as in the above-described embodiment becomes unnecessary, and the number of components constituting the lamp can be further reduced, and the cost can be reduced.

Here, in the above-described embodiment, the turn signal lamp lens is made to have a thin reddish amber color in order to approach the red color of the tail & stop lamp lens occupying a large area of the outer lens. If it is not necessary to make the color reddish, it may be simply colored in amber lighter than the required functional color.
In this case, it is not necessary to adjust the redness of the lens on the reflecting surface of the reflector, so that the reflecting surface may be colored in a simple amber color, and the adjustment of the color material on the lens and the reflecting surface is easy. It becomes something.

Further, in the present invention, the light reflection characteristics of the reflection surface of the reflector and the light reflection characteristics of the lens are similar colors, and the desired color light is obtained by the synergistic action of the two. If the depth of the amber color is made sufficiently high, the amber color of the lens can be reciprocally reduced further, and in order to further improve the appearance of the outer lens when not lit, that is, the appearance of the lamp. It will be advantageous.

In the above embodiment, the present invention is applied to a turn signal lamp of a combination lamp. However, when an independent lamp is formed, or a lamp for lighting with a function color other than the turn signal lamp. The present invention can be similarly applied to

[0022]

As described above, according to the present invention, when a lamp is turned on, a reflecting surface for reflecting light emitted from a light source and a lens for transmitting light reflected on the reflecting surface and irradiating the light to the outside are used. Because it is colored a light color similar to the functional color of, the lens color can not be formed to the original functional color lens color, and even if the lens thickness can not be formed thick, By reflecting the white light from the white bulb on the reflecting surface of the reflector, light transmitted through the lens and radiated to the outside can be converted into color light of the original functional color, and the color of the lens is conspicuous when not lit. Therefore, the appearance of the lamp does not deteriorate, and the cost can be reduced because the inner lens is not required.

[Brief description of the drawings]

FIG. 1 is a front view of a vehicular lamp according to the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a schematic perspective view exploded into portions of FIG. 1;

FIG. 4 is a spectral characteristic diagram of the reflectance and the transmittance of the top coat film and the lens, and a spectral characteristic diagram of irradiated light.

FIG. 5 is a diagram for explaining colors in reflection, transmission, and irradiation of light in a turn signal lamp.

[Explanation of symbols]

 RCL Rear combination lamp T & SL Tail & stop lamp BUL Backup lamp TSL Turn signal lamp 1 Lamp body 2 Reflector 3 Outer lens 11 Front opening 12 Partition wall 13 Peripheral flange 14, 15 Socket mounting hole 21 Opening 22 Flange 23 Valve insertion hole 24 Aluminum film 25 Top coat film 31 Red lens 32 White lens 33 Thin amber lens 41, 42, 43 White bulb 51, 53 Socket

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F21Y 101: 00 F21Q 1/00 Z

Claims (4)

[Claims] 1. A vehicle lamp comprising: a light source that emits substantially white light; a reflecting surface that reflects light emitted from the light source; and a lens that transmits light reflected by the reflecting surface and irradiates the light to the outside. , Wherein the color of the lens and the color of the reflection surface are each colored in a light color similar to the functional color when the lamp is turned on. 2. The reflection surface according to claim 1, wherein a reflection film of a color having a density sufficient to constitute the functional color in synergy with the color of the lens is formed on the reflection surface. Vehicle lighting fixtures. 3. The vehicular lamp according to claim 2, wherein the reflection film includes a coating film applied with a paint mixed with a required coloring material. 4. A vehicle lamp comprising a plurality of lamps of different functional colors combined, wherein said lens is colored in a color similar to the color of a lens of another lamp. Item 4. The vehicle lamp according to any one of Items 1 to 3.