JPH0731458Y2 - Automotive lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vehicle lighting device that uses a light guide plate and illuminates the front surface by stippling, etc., and is particularly mounted on the front or rear of the vehicle body from the side. The present invention relates to a lamp having an improved appearance when a wraparound lamp or the like is lit when it is turned on.

[Conventional technology]

2. Description of the Related Art Conventionally, there is a lamp of this type in which a light guide plate is disposed in a portion that wraps around a side portion of an automobile body, and the light guide plate is used to illuminate the wraparound portion brightly. For example, FIG. 7 is a partial sectional view of an example thereof. In the drawing, reference numeral 21 denotes a lamp body, and a light bulb 22 is attached to a part of the lamp body to form a required lamp, and a part of the lamp body connected to a reflecting surface 23 is extended to the side and a wraparound portion 24 is formed.
Are configured. An outer lens 25 is attached to the front opening of the lamp body 21, and a light guide plate 26 is arranged between the lamp body 21 and the outer lens 25 of the wraparound portion 24.

The light guide plate 26 is made of a transparent material and has an inner end 26a.
Is arranged opposite to the light bulb 22, and the light of this light bulb 22 is guided to the inner end.
It is introduced from 26a to the inside and transmitted toward the outer end. Then, the light guide plate 26 is provided with a stippled portion 27 (see FIG. 8) which is recessed in a conical shape so that the light transmitted through the light guide plate 26 is projected as shown by an arrow in FIG. The carved portion 27 is reflected forward, and the reflected light is used to illuminate the outer lens 25 to brightly illuminate the wraparound portion 24.

[Problems to be solved by the device]

In the above-described conventional lamp, since the light is reflected to the outside at the stippled portion 27 of the light guide plate 26, when the lamp is viewed from the outside, the stippled portion 27 looks bright and the other portions appear darker than this. . In this case, since the outer lens 25 conventionally has a convex step 25a formed on the inner surface thereof, as shown schematically in FIG. 8 by enlarging the X2 portion of FIG. 7, the stippled portion of the light guide plate 26 is shown. 27 becomes a virtual image 27 'magnified by the convex step 25a, and the stippled portion 27 appears to be magnified when viewed from the outside of the lamp.

However, on the other hand, the convex step 25a causes the stippled portion 2
Since the portions 28 other than 7 are also enlarged virtual images 28 ', the dark portion of the light guide plate 26 is also enlarged when viewed from the outside of the lamp. For this reason, the bright and dark parts are enlarged respectively, and as a result, when the lamp is viewed from the outside, these bright and dark parts look like a grid, and it becomes impossible to illuminate the lamp with uniform brightness. However, there is a problem that the appearance of the lamp is deteriorated.

An object of the present invention is to provide an automotive lamp in which the deterioration of the appearance due to the grid-like light and dark is eliminated.

[Means for Solving the Problems]

The automotive lamp of the present invention is a vehicle lamp in which a light guide plate having a stippled portion is provided between a lamp body and an outer lens that closes the opening, and at least the inner surface of the outer lens facing the light guide plate is concave. Forming steps.

In this case, the concave step may be formed on the entire surface of the outer lens.

[Action]

In this configuration, the concave step reduces the stippled portion and other portions of the light guide plate as seen from the outside of the lamp into a virtual image that is condensed and condensed, and prevents the occurrence of grid-like light and darkness caused by the stippled portion. And improve the appearance of the lamp.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

1 to 5 show one embodiment of the present invention, in which the present invention is applied to a combination lamp having a turn lamp and a clearance lamp integrated on the front left side of an automobile body. ing.

1 is a transverse sectional view taken along the line AA in FIG. 2, FIG. 2 is a partially cutaway front view of an embodiment of the present invention, and FIG. 3 is a partially cutaway side view thereof, FIGS. The drawings are enlarged vertical sectional views taken along the lines B-B and C-C of FIG. 1, respectively. In these drawings, a lamp body 1 is formed in a flat shape in the vertical direction, and a turn lamp portion 2 and a clearance lamp portion 3 are formed side by side therewith, and one side portion of the clearance lamp portion 3 (on the outside of the vehicle body). The corresponding portion) is extended to the rear to form the wrap-around portion 4. Then, the outer lens 5 is attached so as to cover the opening extending to the front side and one side of the lamp body 1, and the outer lens 5 is fitted to the lamp body 1 by hooks (not shown) provided at a plurality of locations around the outer lens 5. They are combined and attached, and the peripheral portion thereof is sealed to the lamp body 1 using the adhesive 6. In addition, 1b is a vehicle body mounting hole, and 1c is a vehicle body mounting stud pin.

In the turn lamp part 2, a parabolic inner surface of the lamp body 1 is coated with aluminum to form a reflecting surface 7,
A turn lamp bulb 9 is supported by a socket 8 at its center. Similarly, in the clearance lamp part 3, the parabolic inner surface of the lamp body 1 is coated with aluminum to form a reflecting surface 10.
A socket 11 is used in the central portion of 10 to support a clearance lamp bulb 12. Further, the inner surface of the lamp body 1 of the wrap-around portion 4 connected to the reflective surface 10 is also coated with aluminum to form a reflective surface 13.

Further, a light guide plate 14 formed of a transparent body is disposed in the interior space of the lamp of the wrap-around portion 4 defined between the reflection surface 13 and the outer lens 5. The light guide plate 14 is formed in a shape that is gently bent along the lamp interior space of the wraparound portion 4, and the plate thickness thereof gradually increases toward the inner end portion 14a. 14a are arranged laterally opposite the light bulb 12 for the clearance lamp, and light is introduced into the light guide plate 14 from the inner end 14a.
Further, the light guide plate 14 is configured as a stippling lens, and a large number of stippling parts 15 (see FIG. 6) each having a conical recess are formed on the back surface of the light guide plate 14 so as to be arranged in the vertical and horizontal directions. The stippled portion 15 reflects the light introduced into 14 toward the outside.

The light guide plate 14 is fixed to a boss portion 1a or the like provided on a part of the inner surface of the lamp body 1 with an adhesive (not shown) or the like.

On the other hand, the outer lens 5 has a large number of steps arranged in the vertical and horizontal directions on its inner surface. At least a portion of the outer lens 5 facing the light guide plate 14 is shown in FIGS.
As shown in the enlarged sectional view of the figure, concave step 5a with a concave shape
Is formed. In this embodiment, the concave step 5a is formed on the entire surface of the outer lens 5. In this case, it is necessary to design so that the thickness of the outer lens 5 is not reduced and the strength thereof is not reduced by forming the concave step 5a. The curvature of the concave step 5a is appropriately set depending on the size of the stippled portion 15 on the light guide plate 14, the distance between the light guide plate 14 and the outer lens 5, and the like.

According to the lighting device configured as described above, the outer lens 5
When looking at the lamp, especially the wraparound part, from the outside of the
As shown in FIG. 1 by enlarging the X1 portion of FIG. 1, the stippled portion 15 provided on the light guide plate 14 appears to be reduced due to the concave lens action of the concave step 5a formed on the outer lens 5. The number of stippled portions 15 that can be included in the same viewing angle as in the conventional case is increased. For this reason, the dark area 16 other than the stippled area 15
Is also reduced and can be seen in a condensed state, and as a result, the difference in light and dark between the stippled portion 15 and the other portion 16 is reduced,
The grid-like light and dark seen from the outside of the lamp becomes inconspicuous,
It is possible to improve the appearance of the lamp.

In FIG. 6, f is the focus of the concave step 5a, E is the eye, and 15 'and 16' are virtual images of the stippled portion and other portions.

In the present invention, the concave step 5a formed in the outer lens 5 may be formed in a portion facing the light guide plate 14, in other words, a portion corresponding to the wraparound portion 4, and other portions are the same as before. You may form a convex step in.

Further, the present invention is not limited to the above-mentioned combination lamp, and the present invention can be applied to a combination lamp having another structure or a single lamp as long as the lamp has a light guide plate. Can be applied.

[Effect of device]

As described above, according to the present invention, since the concave step is formed on the inner surface of the outer lens facing the light guide plate having the stippled portion, the stippled portion and other portions viewed from the outside of the lamp are reduced and condensed. This makes it possible to make the grid-like light and darkness caused by the stippled portions inconspicuous and improve the appearance of the lamp.

[Brief description of drawings]

1 to 6 show one embodiment of the automotive lamp of the present invention, and FIG. 1 is a transverse sectional view taken along the line AA of FIG.
The figure is a partially broken front view, FIG. 3 is a partially broken side view, FIG. 4 is an enlarged sectional view taken along line BB of FIG. 1, and FIG. 5 is C- of FIG.
C line enlarged sectional view, FIG. 6 is a schematic enlarged view of a portion X1 of FIG. 1 for explaining the operation of the present invention, and FIG. 7 is a lateral sectional view of a part of a conventional lamp having a light guide plate. , FIG. 8 is an enlarged view of a portion X2 in FIG. 7 for explaining the conventional problems. 1 ... Lamp body, 2 ... Turn lamp part, 3 ... Clearance lamp part, 4 ... Wrapping part, 5 ... Outer lens, 6 ... Adhesive, 7 ... Reflective surface, 8 ... Socket, 9 ...... Turn lamp bulb, 10 ...... Reflective surface, 11 ......
Socket, 12 ... Light bulb, 13 ... Reflecting surface, 14 ... Light guide plate,
14a …… Inner end, 15 …… Stippled part, 16 …… Other part, 21
...... Lamp body, 22 ...... Light bulb, 23 ...... Reflecting surface, 24 ...... Walking part, 25 …… Outer lens, 25a …… Convex step, 26 …… Light guide plate, 27 …… Sticking part, 28 …… Other parts.

Claims (2)

[Scope of utility model registration request] 1. A vehicle body comprising a lamp body, an outer lens covering an opening of the lamp body, and a light guide plate disposed between the lamp body and the outer lens and having stippled portions at a plurality of positions. In the lamp, a concave step is formed on at least an inner surface of an outer lens facing the light guide plate. 2. The vehicle lamp according to claim 1, wherein the concave step is formed on the entire surface of the outer lens.