JP2001076508A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture being brightly visible in the whole reflector and having a conspicuous outward appearance by arranging a light guide plate between a decorative member and a housing so that one end surface faces in a front lens, the other end surface is positioned outside an effective reflecting surface of a reflector when looking at the lighting fixture from the front and faces the reflecting surface of the reflector from clearance between the decorative member and the reflector. SOLUTION: When the sunlight L is shone in this vehicular lighting fixture 1 when the vehicular lighting fixture 1 is not lighted in the daytime, the sunlight L is made incident on one end surface 7a of a light guide plate 7 via a front lens 4 to propagate inside the light guide plate 7 while repeating reflection to be emitted from the other end surface 7b to the irradiated toward a reflecting surface of a reflector 3. The light guide plate 7 has a proper thickness in a transparent member such as an acrylic resin, and both ends are formed in a rectangular plate shape curved so as to face to an inside surface of the front lens 4 and the reflecting surface of the reflector 3. When molding the whole light guide plate 7 by a coloring material, the sunlight L incident on the light guide plate 7 can be emitted in a colored state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp such as a headlamp and a fog lamp for a vehicle, and more particularly to a vehicular lamp having a good appearance when not lit.

[0002]

2. Description of the Related Art Conventionally, a vehicle lamp 90 of this type is configured as shown in FIG. 5, for example, and a bulb 91 as a light source is substantially equivalent to a paraboloid-shaped reflecting surface formed on a reflector 92. They are installed so as to be at the focal position, and are housed in a lamp room formed by a container-shaped housing 94 having an opening on the front surface and a front lens 93 covering the opening on the front surface. Further, a gap is provided between the inner surface of the front lens 93 and the front edge of the reflector 92 to allow the reflector 92 to tilt when the optical axis is adjusted.
This gap is visible through the front lens 93 when the lamp 90 is not turned on, and furthermore, the interior wall surface of the housing 94 is visually recognized through this gap.

In order to solve such a problem, as a means for solving such a problem, a decorative member 95 formed of a cylindrical body or a conical body having a size substantially equal to that of the front opening of the reflector 92 and having a reflection surface formed on an inner surface thereof is provided. The gap between the inner surface of the lamp 93 and the front edge of the reflector 92 is provided so as to cover the gap therebetween. Has a good appearance.

[0004]

However, in the case of such a conventional vehicle lamp 90, the reflector 92 is located deeper than the front lens 93.
In the daytime, sunlight does not reach the interior of the reflector 92, and this portion actually looks dark, and there is a problem that the appearance when the lamp is not lit is bad.

[0005]

According to the present invention, as a specific means for solving the above-mentioned conventional problems, a container-shaped housing having an opening on the front surface, a front lens for covering the front opening of the housing, and A vehicle lamp comprising a reflector provided in a housing and having a bulb mounted thereon, and a decorative member provided in a gap between the front lens inner surface and the reflector front edge, wherein the decorative member and the housing are A light guide plate is installed between the light guide plates, and one end surface of the light guide plate faces the inner surface of the front lens, and the other end surface is located outside the effective reflection surface of the reflector when the lamp is viewed from the front. Another object of the present invention is to provide a vehicular lamp characterized in that it faces a reflection surface of the reflector from a gap between the decoration member and the reflector.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on an embodiment shown in the drawings.

FIG. 1 shows a vehicle lamp 1 according to the present invention. The vehicle lamp 1 is provided on a front surface of a container-shaped housing 5 having an opening on the front surface so as to cover the front opening. A front lens 4 is mounted, a reflector 3 having a bulb 2 mounted therein is provided in a housing 5, and a decorative member 6 is provided in a gap between an inner surface of the front lens 4 and a front edge of the reflector 3. ing.

In the present invention, a light guide plate 7 is provided between the decorative member 6 and the housing 5, and one end face 7a of the light guide plate 7 has a front lens. 4, the other end surface 7b is located outside the effective reflection surface A of the reflector 3 and faces the reflection surface of the reflector 3 from the gap S between the decorative member 6 and the reflector 3.

With the above configuration, when the sunlight L enters the lamp 1 during the daytime when the vehicle lamp 1 is not lit, the sunlight L passes through the front lens 4 and the one end face 7 a of the light guide plate 7.
And propagates while repeating reflection inside the light guide plate 7, exits from the other end face 7 b, and is emitted toward the reflection surface of the reflector 3. As a result, the entire reflector 3, which has conventionally been seen dark, looks bright due to the reflected light, and has a distinctive appearance.

Here, the light guide plate 7 is formed into a rectangular plate shape having a transparent member such as an acrylic resin having an appropriate thickness and having both ends facing the inner surface of the front lens 4 and the reflecting surface of the reflector 3. If the entire light guide plate 7 is formed of a coloring material, the sunlight L incident on the light guide plate 7 can be colored and emitted. For example, the inner surface of the reflector 3 can have the same color as the vehicle body color. Can be illuminated with the intended light, and a more novel appearance can be achieved.

The same effect can be obtained by providing a colored light transmitting member on one of the end faces 7a and 7b of the light guide plate 7 without molding the entire light guide plate 7 with a coloring material.

As such a colored light transmitting member,
For example, a suitable means such as integrally forming a material such as a colored resin or by ultrasonic welding, attaching a colored film, providing a colored filter, or applying a colored ink. Can be formed.

At this time, if the reflected light from the reflector 3 is incident on the end face 7b of the light guide plate 7 facing the reflector 3, when the bulb 2 is turned on, the colored light is applied to the end face 7a on the front lens 4 side. Out of the vehicle, which may become dazzling light for oncoming vehicles and hinder traffic. Therefore, in the present invention, the light guide plate 7 is provided outside the effective reflection surface A of the reflector 3 when the lamp 1 is viewed from the front.
The end face 7 b facing the reflector 3 is disposed, and the light reflected by the reflector 3 when the bulb 2 is turned on is reflected by the light guide plate 7.
Are positioned so as not to be incident from the end face 7b.

Further, if more sunlight L can be incident on the light guide plate 7, the reflector 3 can be illuminated more brightly. Therefore, as shown in FIG. It is preferable to provide a condenser lens portion 4b on the inner surface of the front lens 4 facing the light guide plate end surface 7a.

For example, as shown in FIG. 3, a plurality of convex lenses are arranged in a line to form a front lens 4b.
And a cylindrical lens integrally formed as shown in FIG.

In the above-described embodiment, the decorative member 6 and the light guide plate 7 have been described as separate components. However, they can be integrally formed of the same member. By forming a reflective surface on the upper surface of the light plate 7 by an aluminum vapor deposition process or the like to form a decorative surface, a configuration in which both are integrated can be provided. As a result, the number of components can be reduced, and the installation space can be used effectively. Therefore, the thickness of the light guide plate 7 can be increased, more sunlight L can be taken in, and the reflector 3 can be illuminated more brightly. it can.

[0017]

As described above, according to the present invention, one end face is provided between the interior of the front lens of the vehicular lamp and the decorative member provided in the gap between the front edge of the reflector and the housing. The light guide plate facing the inner surface of the lens and the other end surface is located outside the effective reflection surface of the reflector when the lamp is viewed from the front, and faces the reflection surface of the reflector from the gap between the decoration member and the reflector. In the daytime, when the vehicle lamp is not lit, when sunlight shines into the lamp during the day, the sunlight enters one end face of the light guide plate through the front lens and repeatedly reflects inside the light guide plate. Propagating, and emitted from the other end face, is radiated toward the reflecting surface of the reflector, and the entire reflector, which was previously dark, can be seen brightly by the reflected light, making it possible to realize a lamp with outstanding appearance. In which excellent effects such.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a vertical sectional view showing a main part of the same embodiment.

FIG. 3 is a front view showing a first example of a condenser lens portion of the vehicular lamp according to the present invention.

FIG. 4 is a front view showing a second example of the condenser lens portion of the vehicular lamp according to the present invention.

FIG. 5 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... Bulb 3 ... Reflector 4 ... Front lens 4a ... Lens cut surface 4b ... Condensing lens part 5 ... Housing 6 ... Decorative member 7 ... Light guide plate 8 ... Car body 9 ... Bumper

Claims (5)

[Claims] 1. A container-shaped housing having an opening on the front surface, a front lens covering the front opening of the housing, a reflector provided in the housing and having a valve mounted thereon, an inner surface of the front lens and a front of the reflector. In a vehicle lighting device comprising a decorative member disposed in a gap with an edge, a light guide plate is provided between the decorative member and the housing, and one end surface of the light guide plate has an inner surface of the front lens. The other end face is located outside the effective reflection surface of the reflector when the lamp is viewed from the front, and faces the reflection surface of the reflector from a gap between the decoration member and the reflector. Vehicle lighting device characterized by the above-mentioned. 2. The vehicular lamp according to claim 1, wherein the decorative member and the light guide plate are integrally formed of the same member. 3. The vehicular lamp according to claim 1, wherein the light guide plate is formed of a colored material. 4. The vehicular lamp according to claim 1, wherein a colored light transmitting member is provided at one end of the light guide plate. 5. The vehicular lamp according to claim 1, wherein a condenser lens portion is formed at a portion of the back surface of the front lens facing the light guide plate.