JP2955168B2 - Automotive signal lights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp for an automobile, and more particularly to a signal lamp such as a tail lamp and a stop lamp.

[0002]

2. Description of the Related Art FIG. 6 shows an example of the structure of a conventional vehicle signal lamp 90 of this type. First, this vehicle signal lamp 90 is provided with a rotating light source such as an incandescent light bulb. A lens 9 having an object surface reflecting mirror 92, which converges the light from the light source 91 as a parallel light beam in the irradiation direction, and has a fisheye lens cut 93a in the optical path of the parallel light beam.
3, the fisheye lens cut 93a
Thus, the above-mentioned parallel light beam is appropriately diffused to obtain a light distribution characteristic.

[0003]

However, in the above-described conventional signal light 90 for a vehicle, the light is diffused by the lens 93 closest to the viewer side to obtain the light distribution characteristic. At times, the surface of the lens 93 shines, and the display is poor in three-dimensional appearance, which causes a problem that the degree of freedom in design is restricted. In addition, even in a non-lighting state, the fisheye lens cut 93a causes the lens 93 to lose transparency, and the overall signal light 90 for an automobile has a flat impression.
The solution of these points has been an issue.

[0004]

According to the present invention, as a specific means for solving the above-mentioned conventional problems, there is provided a reflecting means for converging light from a light source as substantially parallel light rays and projecting the light in an irradiation direction; In a signal light for an automobile, the light source is provided with light distribution control means for forming light distribution characteristics by appropriately diffusing light rays, wherein the reflection means focuses the light source on the back side of a compound lens formed of a transparent member. A paraboloid of revolution formed as a parabolic surface and a reflecting surface provided in close contact with the paraboloid of revolution, wherein the light distribution control means is formed to have a substantially uniform thickness with respect to the paraboloid of revolution. An object of the present invention is to solve the problem by providing a signal light for an automobile, wherein the signal light is a lens cut provided on the surface side of the vehicle.

[0005]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 and 2 is a first embodiment of a signal light for an automobile (hereinafter abbreviated as signal light 1) according to the present invention. The signal light 1 emits light emitted from a light source 2. Similar to the conventional example, a reflection unit that converges as a parallel light beam and projects in the irradiation direction, and a light distribution control unit that forms light distribution characteristics by appropriately diffusing the parallel light beam are provided. However, in the present invention, the compound lens 3 is provided, and the reflection means and the light distribution control means are formed using the compound lens 3.

First, the compound lens 3 is basically formed of a colorless and transparent resin member or the like. At this time, the rear side of the compound lens 3 has a paraboloid of revolution 31 having an appropriate focal length. When the light source 2 is attached to the housing 5 to which the light source 2 is attached at a predetermined position, the paraboloid of revolution 31 is focused on the position of the light source 2.

In addition, the reflecting surface 4 is formed in close contact with the paraboloid of revolution 31 by vacuum deposition of aluminum or the like. Therefore, the reflecting surface 4 also focuses on the position of the light source 2. And converges the light from the light source 2 into parallel light rays and reflects the light toward the irradiation direction.

At this time, the compound lens 3 is formed to have a substantially uniform thickness with respect to the paraboloid of revolution 31 and has a surface formed thereon, and a lens cut 32 having a fisheye lens shape is formed on the surface. It is assumed that. Therefore, the light from the light source 2 is reflected by the reflection surface 4 after passing through the lens cut 32, and is transmitted again through the lens cut 32 in the irradiation direction.

The signal light 1 is provided with the signal light 1.
Is provided with an outer lens 6 which is attached to the housing 5 in an airtight state for the purpose of waterproofing inside or matching with the vehicle body shape. At this time, the outer lens 6 has a uniform thickness. It is assumed that the light from the reflection surface 4 and the lens cut 32 does not substantially have an optical effect such as refraction or diffusion.

Further, in this type of signal lamp 1, since the emission color (light color) at the time of lighting is defined as red for a tail lamp, for example, the compound lens 3, the reflection surface 4 or the outer surface is defined. Although it is necessary to color one of the lenses 6, in this first embodiment,
Alternatively, it is assumed that the reflection surface 4 is colored with a predetermined color.

Next, the operation and effect of the signal lamp 1 of the present invention having the above-described structure will be described. 32, and reaches the reflection surface 4 and is reflected. At this time, coloring of a predetermined color is performed at the same time, and the light is transmitted again through the lens cut 32 to have a predetermined light distribution characteristic, and then passes through the outer lens 6 to reach the irradiation direction.

When the signal lamp 1 is viewed from the outside in this state, the outer lens 6 is considered to be excellent in transparency without being subjected to lens cutting or the like as in the conventional example. The light emitting surface 1 is viewed as if it were in a complex lens 3 where reflection and diffusion are performed, and a three-dimensional effect according to the shape in which the complex lens 3 is formed can be obtained.

Further, for example, if the outer lens 6 is formed in a shape conforming to the shape of a vehicle body and the outer lens 6 is placed in a transparent gray color or the like, the light source 2
When the lamp is not lit, the inside, for example, the light source 2, the compound lens 3, the reflection surface 4, and the like are not seen through from the outside, but are viewed with a sense of unity with the vehicle body shape. In the case of No. 1, a completely different shape design appears between the lighting and the non-lighting.

Note that, as described above, when lighting and when not lighting,
When it is not desired that the shape is largely changed, the outer lens 6 may be formed to be colorless and transparent. In this case, the shape of the compound lens 3 and the shape applied to the compound lens 3 both when lit and when not lit. The pattern by the lens cut 32 is viewed from the outside.

FIG. 3 shows a second embodiment of the present invention. In addition to the structure of the first embodiment, a cap 7 for covering the light source 2 is provided. The light that is toned to a color (light color) and reaches the complex lens 3 from the light source 2 is defined as a specified color.

When the cap 7 is provided, the complex lens 3 and the reflecting surface 4 need not be colored, so that the complex lens 3 and the reflecting surface 4 are formed to be colorless. At this time, it is preferable that the outer lens 6 be formed as a colorless and transparent one so that the inside of the signal lamp 1 can be seen even when the light source 2 is not turned on.

With the above-described structure, in the signal lamp 1 of the second embodiment, the color of the light from the light source 2 is applied by the cap 7 at the time of lighting, as in the case of the first embodiment. The entire surface of the composite lens 3 is illuminated with a luminescent color (light color) and is viewed, so that a three-dimensional effect can be obtained.

Further, when not lit, the composite lens 3 including the lens cut 32 is seen through the outer lens 6.
The reflection surface 4 is visually observed. At this time, since neither the complex lens 3 except the cap 7 nor the reflection surface 4 is colored, for example, the appearance which is excellent in transparency as seen in a glass product Is obtained. Since the operation and effects other than those described above are the same as those of the first embodiment, detailed description thereof will be omitted.

FIG. 4 shows the state of the lens cut 32 formed on the compound lens 3.
A lens having a convex lens shape may be closely in the vertical and horizontal directions like a fish-eye lens cut (see FIG. 6) applied to a conventional lens, but a ring having an interval as shown in FIGS. The light may be in the form of a concave lens as shown in FIG. It may be determined in consideration of the design at the time. Further, the change to the lens cut 32 can be implemented in any of the first embodiment and the second embodiment.

[0020]

As described above, according to the present invention, the reflecting means is in contact with the paraboloid of revolution formed with the light source as the focal point on the back side of the compound lens formed of the transparent member. The light distribution control means is an automobile signal light fixture which is a lens cut provided on a surface side of a compound lens formed to have a substantially uniform thickness with respect to the paraboloid of revolution. The three-dimensional part of the lens cut, which most affects the shape of the light-emitting surface viewed when illuminated, makes it possible to produce a three-dimensional effect on this type of lamp, and has an extremely excellent effect on improving product appeal. To play.

In addition, the coloring of the lighting color on the complex lens or the reflecting surface, or the provision of a lighting color cap on the light source or the like may cause a difference in the appearance design between lighting and turning off. The effect of further improving the effect is also exhibited.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of an automotive signal light according to the present invention in a partially exploded state.

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

FIG. 3 is a sectional view showing a second embodiment of the signal light for an automobile according to the present invention.

FIG. 4 is a cross-sectional view showing a main portion of another embodiment of the signal light for an automobile according to the present invention.

FIG. 5 is a cross-sectional view showing a main portion of still another embodiment of the signal light for an automobile according to the present invention.

FIG. 6 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Signal lamp for automobiles 2 ... Light source 3 ... Complex lens 31 ... Paraboloid of revolution 32 ... Lens cut 4 ... Reflective surface 5 ... Housing 6 ... Outer lens 7 ... Cap

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-179604 (JP, A) JP-A-3-81902 (JP, A) JP-A-62-77803 (JP, U) JP-A-2-79803 62608 (JP, U) Japanese Utility Model Showa 50-89055 (JP, U) Japanese Utility Model Hei 2-62607 (JP, U) Japanese Utility Model Utility Model 2-24410 (JP, U) Japanese Utility Model Utility Model Hei 3-37713 (JP, U) (58) Field surveyed (Int.Cl. ⁶ , DB name) F21Q 1/00 F21M 3/12 F21V 7/06 G02B 5/10

Claims (3)

(57) [Claims] 1. A light distribution means for converging light from a light source into substantially parallel light rays and projecting the light in an irradiation direction, and a light distribution control means for giving appropriate diffusion to the parallel light rays to form light distribution characteristics. In the signal light for automobiles, the reflecting means is a paraboloid of revolution formed with the light source as a focal point on the back side of the compound lens formed of a transparent member and a reflecting surface provided in close contact with the paraboloid of revolution. The light distribution control means for a vehicle, wherein the light distribution control means is a lens cut provided on a surface side of the compound lens formed to have a substantially uniform thickness with respect to the paraboloid of revolution. 2. The vehicle signal lamp according to claim 1, wherein the complex lens or the reflecting surface is colored in correspondence with the emission color of the vehicle signal lamp. 3. The signal light for an automobile according to claim 1, wherein the light source is provided with a cap for coloring the light emitted from the light source in accordance with the emission color of the signal light for an automobile. .