JPH10255513A - Vehicle headlight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a headlight with its superior appearance without losing a light quantity of a headlight by providing a clearance lamp adjacent to an illumination fixture consisting of a light source and a reflection mirror and providing an extension reflector so as to cover that front face. SOLUTION: First and second reflection mirrors 7 and 8 are spaced and provided, a clearance lamp 5 is adjacently provided between these mirrors, and an extension reflector 2 is provided in front of the clearance lamp 5. Since an opening for disposing the clearance lamp 5 at the first and second reflection mirrors 7 and 8 is eliminated, the light of the first light source 3 can be effectively reflected by the reflection mirror 7 not so as to cause a light quantity loss. The illumination light from the clearance lamp 5 is illuminated from the front and side faces of the extension reflector 2, and unique illumination can be performed. Further, the clearance lamp 5 is not visualized from the front of a vehicle headlight 10, thereby improving appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlight device having an extension reflector, and more particularly, to an improvement in a mounting structure of a clearance lamp and an extension reflector.

[0002]

2. Description of the Related Art As shown in FIGS. 7 to 9, a conventional vehicle headlamp includes a first light source 33, 34 and reflectors 37, 38 in a space 40 defined by a housing 36 and an outer lens 31. It comprises a lamp 41, a second lamp 42, a clearance lamp 35, and an extension reflector 32.

The extension reflector 32 is provided between the reflecting mirrors 37, 38 and the housing 36 in the space 40 in the housing 36, and between the reflecting mirrors 37, 38 and the outer lens 3.
The space between the lamps is covered to improve the appearance of the lamp. The extension reflector 32 is subjected to a surface treatment such as vapor deposition of aluminum on a transparent resin to form a reflection surface.

A first lamp 41 has a housing 36.
, And a clearance lamp 35 disposed in front of the reflecting mirror 37 through an opening 39 of the reflecting mirror 37 is provided. Further, the first lamp 41 and the second lamp 42 have an aiming mechanism (not shown) in which the reflecting mirrors 37 and 38 are tilted up and down, left and right, and the optical axis is adjusted so as to conform to security standards.

[0005]

However, in such a conventional vehicle headlamp 50, an opening 39 for disposing the clearance lamp 35 on the reflecting mirror 37 is provided. 39 has a large diameter so as not to contact the clearance lamp 35 when the reflecting mirror 37 is tilted by the aiming mechanism. For this reason, the light emitted from the light source 33 of the reflecting mirror 37 is disturbed by the opening 39, and the light quantity of the lamp itself is reduced.

The extension reflector 32 forms a reflection surface by performing a surface treatment such as vapor deposition of aluminum on a transparent resin. Therefore, this step is further required at the time of manufacturing, which requires an increase in the number of man-hours and a jig, which leads to an increase in cost.

In the above-mentioned conventional example, a two-lamp type in which two lamps are provided in one housing has been described. The same is true.

[0008]

According to the present invention, there is provided a lamp comprising a light source and a reflector in a space defined by a housing and an outer lens.
In a clearance lamp, and a vehicle headlight including an extension reflector, the clearance lamp is provided adjacent to the lamp, and a front surface is covered by the extension reflector,
Another object of the present invention is to provide a vehicle headlamp characterized in that a reflection cut is formed on the extension reflector.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 is a vehicle headlamp according to the present invention. The headlamp 10 includes a housing 6 and an outer lens 1 similar to a conventional example.
A first lamp 11, a second lamp 12, a clearance lamp 5, and an extension reflector 2 are formed in a space 13 formed by light sources 3, 4 and reflecting mirrors 7, 8.

FIG. 2 is a sectional view taken along the line A--A in FIG. 1. In this embodiment, the reflecting mirrors 7 and 8 are provided apart from each other, and the clearance lamp 5 is disposed adjacent to the reflecting mirrors 7 and 8 therebetween. It has become something. An extension reflector 2 is provided on the front surface of the clearance lamp 5 to cover and hide the clearance lamp 5 so that the clearance lamp 5 cannot be directly viewed from the front surface, the interval between the reflecting mirrors 7, 8 and the clearance lamp 5, the reflecting mirrors 7, 8 and the housing. 6 and the distance between the reflecting mirrors 7 and 8 and the outer lens 1.

The extension reflector 2 has a substantially concave or V-shaped cross section as shown in FIG. 4, and the clearance lamp 5 and the interval are set not only from the front but also from the side. It is designed to cover up being viewed. In addition, extension reflector 2
Is formed by stamping a transparent resin with a mold. As shown in FIG. 4, a reflection cut 9 is made at an appropriate place on the inner surface of the extension reflector 2, and by forming a reflection cut as described later. The irradiation light of the clearance lamp 5 can be applied to the front surface.

FIG. 5 shows the extension reflector 2.
FIG. 5 (a) shows a reflection cut 9 applied to FIG.
Is a well-known cut having a substantially triangular cross section to form a total reflection cut 9a. FIG. 5B shows a semi-transmissive cut 9b in which the tip of the total reflection cut is flattened to perform transmission and reflection.
(C) shows another example, in which a total reflection cut 9a is formed by a known retroreflection cut. Although the material forming the extension reflector 2 has been described as a transparent resin, it is needless to say that the material can be formed as long as the material is transparent or translucent such as glass.
Further, since the reflection cut 9 has a reflection function for light from both the inside and the outside, it can be formed on either the inner surface or the outer surface of the extension reflector 2, but it is better to form it on the inner surface. It will be good.

FIG. 6 is a diagram showing an irradiation operation of the clearance lamp 5 by the reflection cut 9 formed on the extension reflector 2. In FIG. 6A, the light when the clearance lamp 5 emits light is a semi-transmissive cut 9 on the front surface.
b partially transmits to the front surface, partially reflects at the semi-transmissive cut 9b, further reflects at the side semi-transmissive cut 9b, passes through the front surface, and is emitted. Further, the light directly hitting the transflective cut 9b on the side surface is partially reflected and transmitted through the front surface and emitted, and partly transmitted through the translucent cut 9b on the side surface and emitted to the front surface. FIG. 6B shows another example, and the front surface has a semi-transmissive cut 9b as in FIG. 6A.
Is formed, but the total reflection cut 9a is formed on the side surface.
Is formed. Therefore, all the light hitting the total reflection cut 9a on the side surface goes to the front surface, so that the amount of light emitted from the front surface is larger than that of the above-mentioned one.

As described above, two examples have been described.
In addition to this, it is possible to provide both reflection and transmission functions by, for example, performing total reflection cut on a part of the front surface, and various types can be applied.

Next, FIG. 3 shows a second embodiment of the present invention. In this embodiment, the clearance lamp 5 is not located between the reflecting mirrors 7 and 8, but the reflecting mirror 8 of the reflecting mirror 7 is different from the reflecting mirror 8. It is provided adjacent to the opposite end face. Also in this case, the extension reflector 2 is provided with a total reflection cut 9a and a semi-transmissive cut 9b as in the first embodiment.

In the above-described first and second embodiments, the two-lamp type has been described. However, as described in the conventional example, only the lamp 11 and the clearance lamp 5 are used and the lamp 12 without the lamp 12 is used.
The same applies to the lamp type.

In the description of the first embodiment, FIG.
(B) describes the irradiation operation of the clearance lamp 5,
In the second embodiment, since the clearance lamp 5 is provided at the left corner of the lamp, as shown in FIG. 6C, the left side is a total reflection cut 9a, the right side and the front are semi-transmission cuts 9b, and the front is transparent. When light is reflected on the left side and all the light is reflected and transmitted on the right side, the brightness gradually decreases from the left end of the lamp to the right. (The right and left sides can be formed by reversing the side cuts.)

Next, the operation and effect of the vehicle headlamp 10 according to the present invention having the above-described structure will be described. An opening for disposing the clearance lamp 5 on the reflecting mirrors 7 and 8 is not provided. Therefore, the light from the light source 3 can be effectively reflected by the reflecting mirror 7, and no loss of light amount occurs. The clearance lamp 5 is provided adjacent to the lamp, and the front is covered with the extension reflector 2, so that the irradiation light from the clearance lamp 5 is emitted from the front and side surfaces of the extension reflector 2. It will be able to perform novel lighting.

Further, the extension reflector 2
Is provided with a total reflection cut 9a and a semi-transmissive cut 9b. When the vehicle headlamp 10 is viewed from the front, the clearance lamp 5 disposed behind the extension reflector 2 is not viewed, and It is improved.
The extension reflector 2 has a reflection cut 9 partially or entirely formed by a total reflection cut 9a or a semi-transmission cut 9b, and forms a reflection surface by performing a surface treatment such as vapor deposition of aluminum as in the related art. This is not necessary, and is performed only by forming using a mold, so that mass production and inexpensive forming are possible.

[0020]

As described above, according to the present invention, the clearance lamp is provided adjacent to the headlight,
Because the front surface is covered by the extension reflector, there is no loss in the amount of headlight light,
It will be sophisticated and excellent in appearance. In addition, the extension reflector has a reflection surface formed by reflection cutting, and is performed only by forming with a mold, so that it is not necessary to form a reflection surface by performing surface treatment such as vapor deposition of aluminum. It can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a vehicle headlamp according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view showing a main part of another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a main part of the shape of the extension reflector.

FIGS. 5A and 5B are a front view and a cross-sectional view showing an example of the shape of a reflection cut applied to an extension reflector in a main part.

FIG. 6 is a cross-sectional view showing an irradiation operation of a clearance lamp by a reflection cut formed on an extension reflector.

FIG. 7 is a front view showing a conventional example.

FIG. 8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is a sectional view taken along line BB of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer lens 2 Extension reflector 3 1st light source 4 2nd light source 5 Clearance lamp 6 Housing 7 1st reflection mirror 8 2nd reflection mirror 9 Reflection cut 9a Total reflection cut 9b Semi-transmission cut 10 Vehicle headlamp 11 1st lamp 12 Second lamp 13 Space

Claims (2)

[Claims] 1. A lamp, a clearance lamp comprising a light source and a reflecting mirror in a space defined by a housing and an outer lens.
And a vehicle headlamp provided with an extension reflector, wherein the clearance lamp is provided adjacent to the lamp and has a front surface covered by the extension reflector. 2. The vehicle headlight according to claim 1, wherein a reflection cut is formed on the extension reflector.