JPH0735209Y2 - Vehicle light lens - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vehicle lamp body having a colored light-shielding portion formed on one surface.

[0002]

2. Description of the Related Art Conventionally, a rear combination lamp as shown in FIGS. 1 and 2 has been known as a vehicle lighting body. This rear combination lamp
For example, it has valves 1 and 2 for tail stop and a valve 3 for turn signal. An outer lens 4 as a vehicular lamp lens is provided in front of the turn signal bulb 3. The outer lens 4 is colored and transparent, for example, orange and transparent. The outer lens 4 is formed with a plurality of colored light-shielding portions 7 at intervals in the vertical direction from the viewpoint of design and prevention of false lighting based on the reflection and reflection of external light. The colored thickness of the colored light-shielding portion 7 is, for example, about 100 μm. The colored light-shielding portion 7 is formed on the back surface 6 (side of the bulb 3) of the outer lens 4. The colored light-shielding portion 7 has a strip shape extending in the horizontal direction (for example, JP-A-1-14620).
No. 2). The colored light shield 7 is, for example, red. Between the colored light-shielding portion 7 and the colored light-shielding portion 7, there is a band-shaped effective transmission portion 8 extending in the horizontal direction. The bulb light emitted from the bulb 3 is emitted to the outside through the effective transmission portion 8.

Reference numeral 9 is a lamp housing, 10 is an inner lens, and 11 is a reflector.

[0004]

By the way, conventionally, the colored light-shielding portion 7 is formed by applying a paint to the back surface 6 of the outer lens 4 to form a coating film, and naturally drying the coating film all day and night. . However, the surface of the coating film tends to dry quickly, and when thinner as a solvent contained in the paint later volatilizes, a part of the coating film swells and pops, and the swollen part becomes a defect. . If the colored light-shielding portion 7 has such a defective portion, the valve light leaks to the outside from this defective portion, which is not preferable.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicular lamp lens capable of reliably blocking light leaking from the colored light-shielding portion.

[0006]

A vehicle lamp lens according to the present invention is a vehicle lamp lens in which a colored light-shielding portion is formed on one surface side. A scattering surface for scattering the valve light emitted from the bulb is formed on at least one of the corresponding portion on the surface side and the corresponding location.

[0007]

According to the vehicle lamp lens of the present invention, most of the bulb light emitted from the bulb is scattered by the scattering surface, so that even if there is a small defect in a part of the colored light shielding portion, It is possible to reliably prevent the emitted bulb light from leaking to the outside through the defective portion of the colored light shielding portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a vehicle lamp lens according to the present invention will be described with reference to the drawings.

FIGS. 3 to 5 show a rear combination lamp to which the vehicle lamp lens according to the present invention is applied. The present invention can be applied to any of a turn signal lamp, a tail stop lamp, and a backup lamp of a rear combination lamp, but in the following description, the vehicle lamp lens according to the present invention is applied to the backup lamp. .

In FIG. 3, 20 is a turn signal valve, 21 is a tail stop valve, and 22 is a backup valve. Valves 20, 21, 2
2 is provided in the housing 23. Each valve 2
0, 21, and 22 are separated by a partition wall. In FIG. 4, 23 'is a partition wall that isolates the tail stop lamp 21 and the backup lamp 22.

A vehicle lamp lens 24 is provided on the front surface of the backup lamp 22. As shown in FIG. 3, the vehicle lamp lens 24 has a strip-shaped colored light-shielding portion 25 that extends in the horizontal direction. The colored light-shielding portion 25 is provided from the viewpoint of design and the viewpoint of preventing false lighting based on the reflection and reflection of external light. A plurality of the colored light-shielding portions 25 are provided at intervals in the vertical direction. A band-shaped effective transmission portion 26 extending in the horizontal direction is provided between the colored light shielding portion 25 and the colored light shielding portion 25. The bulb light emitted from the bulb 22 is emitted to the outside through the effective transmission portion 26. By providing the colored light shielding portion 25 on the backup lamp 22, it is possible to obtain a sense of unity between the tail stop lamp 21 and the backup lamp 22.

The vehicular lamp lens 24 is made of synthetic resin. Here, polymethyl methacrylate (PMMA) is used as the synthetic resin. As shown in FIG. 5, a plurality of recesses 27 are provided at intervals in the vertical direction on the surface (one surface side) 24a of the vehicular lamp lens 24. The recess 27 is in the form of a strip extending in the horizontal direction. The recess 27 is formed during the injection molding of the vehicle lighting lens 24. The colored light shielding portion 25 exists in the recess 27. FIG. 6 is an enlarged view of the recessed portion 27 of the vehicle lamp lens 24 after the molding and before the formation of the colored light-shielding portion. Here, a scattering surface 28 is formed in the recess 26 at the same time as the molding. The scattering surface 28 may be a random aggregate of minute irregularities or a regular aggregate of irregularities. Further, the scattering surface 28 may have a satin finish. This scattering surface 28 is
It may be formed by honing or graining after the vehicle lamp body lens 24 is molded.

A colored light-shielding film 29 for forming the colored light-shielding portion 25 is welded to the recess 27 by a hot melt device 30. The colored light-shielding film 29 is composed of, for example, a base film 31, a release layer 32, a coloring layer 33, a light-shielding layer 34, and an adhesive layer 35, as shown in an enlarged view in FIG. 7. For example, the base film 31 has a thickness of 20 μm to 60 μm, the release layer 32 has a thickness of 0.5 μm to 1 μm, the coloring layer 33 has a thickness of 1 to 5 μm, and the light shielding layer 34 has a thickness. Is 0.5 to 5 microns and the thickness of the adhesive layer 35 is 1 to 3 microns.

The hot melt apparatus 30 includes a cylinder 3
6, a heating plate 37, and a marking jig 38. An adhesive layer 35 is provided between the marking jig 38 and the vehicle lamp lens 24.
The cylinder 36 is lowered with the colored light-shielding film 29 interposed so as to face the surface 24a. Marking jig 3
Reference numeral 8 heats the vehicular lamp lens 24 while pressing it through the colored light shielding film 29. As a result, as shown in FIG. 8, the colored light-shielding film 29 is welded to the recess 27 and the colored light-shielding portion 25 is formed on the vehicle lamp lens 24.

FIGS. 9 and 10 show a modified example of the vehicular lamp lens 24 according to the present invention, in which the recess 24 is formed on the back surface (other surface) 24b opposite to the surface 24a on which the recess 27 is formed. The scattering surface 28 is formed at a location corresponding to the location where the location 27 is formed, and the colored light shielding film 29 is welded to the recess 27 to form the colored light shielding portion 25.

This colored light-shielding film 29 is applied to the vehicle lamp lens 2
According to the method of forming the colored light shielding portion 25 by welding to No. 4, the colored light shielding portion 25 can be formed quickly in a short time. Further, most of the valve light emitted from the backup bulb 22 and traveling toward the colored light-shielding portion 25 is scattered by the scattering surface 2.
Since it is scattered and diffused by 8, even if there is a small defect in a part of the colored light shielding part 25, the valve light emitted from the bulb 22 is prevented from leaking to the outside through the defective part of the colored light shielding part 25. Therefore, the light-shielding effect of the colored light-shielding portion 25 is improved as compared with the conventional case. Therefore, the quality of the vehicle lamp body lens 24 is improved.

11 to 14 show that the colored light-shielding portion 25 is formed by spray coating.

11 and 12, a coating 40 is formed on the scattering surface 28 of the recess 27 formed on the surface 24a of the vehicular lamp lens 24 by using a spray 39, and the coating 40 is dried. It is explanatory drawing of the process of forming the colored light-shielding part 25.
13 and 14, a scattering surface 28 is formed on the back surface 24b opposite to the surface 24a on which the recess 27 is formed, a coating film 40 is formed on the recess 27, and the coating film 40 is dried. The colored light-shielding portion 25 is formed. The vehicle lamp lens 24 is covered with a mask 41 so that a coating film is not formed on portions other than the locations where the colored light-shielding portions 25 are formed.

The paint includes synthetic resin and pigment (for example,
The colored light-shielding portion 25 may be formed at once using a mixture of mica, carbon, aluminum, etc. dissolved in a solvent, or a light-shielding coating film (thickness is, for example, 10 microns) by the first coating. To 20 microns), the coating film for light shielding is dried, and then a coating film for coloring (the film thickness is, for example, 10 microns) is formed by the second coating to form the colored light shielding portion 25. You may form.

Although the recess 27 is formed on the front surface 24a of the vehicular lamp lens 24 in the embodiment, the recess 27 is formed on the rear surface 24b of the vehicular lamp lens 24 and the recess 27 is formed. The colored light-shielding portion 25 may be formed on 27.

[0021]

Since the vehicular lamp lens according to the present invention is configured as described above, it is possible to reliably prevent light leaking from the colored light-shielding portion, and thus to improve the quality of the vehicular lamp lens. The effect that it can improve is produced.

Further, since most of the bulb light emitted from the lamp and heading for the colored light-shielding portion is diffusely reflected by the scattering surface, the thickness of the colored light-shielding portion can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a conventional rear combination lamp.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a front view of a rear combination lamp having a vehicle lamp lens according to the present invention.

FIG. 4 is a plan view showing a cross section of a main part of the rear combination lamp shown in FIG.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is an explanatory diagram of a process of forming a colored light shielding portion on a vehicle lamp lens.

FIG. 7 is a partial cross-sectional view showing a fine structure of a colored light-shielding film welded to a vehicle lamp lens.

FIG. 8 is a partial cross-sectional view showing a colored light-shielding film welded to a vehicle lamp lens.

FIG. 9 is a partial cross-sectional view showing another example of the scattering surface formed on the vehicle lamp lens.

10 is a partial cross-sectional view showing a colored light-shielding film welded to the vehicle lamp lens shown in FIG.

FIG. 11 is a diagram showing an example in which a colored light-shielding portion is formed by coating on a vehicle lamp lens having a scattering surface formed in a recess.

12 is a partial cross-sectional view showing a colored light-shielding portion formed by coating the vehicle lamp lens shown in FIG.

FIG. 13 is a diagram showing an example in which a colored light-shielding portion is formed by painting on a vehicle lamp lens having a recess formed on the front surface and a scattering surface formed on the back surface.

14 is a partial cross-sectional view showing a colored light-shielding portion formed by coating the vehicle lamp lens shown in FIG.

[Explanation of symbols]

 24 Vehicle Lamp Lens 24a Front Surface 24b Rear Surface 25 Colored Light-shielding Part 28 Scattering Surface

Claims (1)

[Scope of utility model registration request] 1. A vehicle lamp lens in which a colored light-shielding portion is formed on one surface side, and at least one of a formation location where the colored light-shielding portion is to be formed and a corresponding location on the other surface side corresponding to the formation location. To
A vehicular lamp lens having a scattering surface for scattering the bulb light emitted from the bulb.