JP3104844B2 - Vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp having a lens with an improved appearance design, and more particularly to a vehicular lamp in which steps provided on the lens are improved.

[0002]

2. Description of the Related Art A vehicular lamp obtains a required light distribution characteristic by condensing or diffusing light emitted from a light source in a step provided on a lens. Various ideas have been devised to enhance the design of lamps. For example, as shown in FIG. 10, in a tail lamp 100 provided at the rear of an automobile, a plurality of laterally extending lines 102 are formed at required intervals in order to accentuate a lens 101 having a large area. The line 102 is formed by, for example, projecting the inner surface of the lens 101 into a linear shape. Alternatively, a line is generated at the boundary by arranging differently shaped steps vertically and vertically.

[0003]

By the way, in a lamp such as a tail lamp 100 mounted on the rear part of an automobile, a reflex reflector (RR) having a required area is usually used to reflect light from a following automobile to a part of the lens 101. Although it is required to dispose the RR section 103, when the RR section 103 is formed on the lens 101 of the tail lamp having the line 102 as described above, the RR section 10 is formed.
3 extends over the plurality of lines 102,
The line 102 is cut off in the RR section 103, and the improvement of the design of the lamp, which is the original purpose of providing the line 102, is impaired. An object of the present invention is to provide a vehicular lamp that does not impair the design provided with a line even when an RR portion is formed over a line provided on a lens.

[0004]

According to the present invention, an RR portion formed in a region straddling a line formed in a lens of a lamp is divided into a plurality of regions along the line.
In addition, the RR step of each partition region is configured such that the arrangement pitch is shifted along the partition boundary line. Alternatively, the RR section is divided into a plurality of regions along the line, and the RR steps in each of the divided regions are configured to be oriented in opposite directions in adjacent regions.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an embodiment in which the present invention is applied to a rear combination lamp at a rear left portion of an automobile, FIG. 2 is a sectional view taken along line AA, and FIG. 3 is a sectional view taken along line BB. The lamp body 1 formed to be long horizontally has an outer lens 2 attached to the front opening thereof, and four lamp chambers 1 formed by shades 3 protruding from the inner surface of the lamp body 1.
A to 1D are defined, and bulbs 5A to 5D are supported in a lamp body in each lamp room. In each lamp room, a tail lamp TL, a tail & stop lamp T & SL, a turn signal lamp TSL, and a backup lamp BUL are respectively provided.
Is configured. In each of the lamp chambers 1A to 1D, the inner surface of the lamp body 1 has a parabolic shape, and is formed as a reflective surface by evaporating aluminum or the like. Further, the lamp body 1 is fixed to an automobile body (not shown) by stud bolts 6 erected on the rear surface.

Further, the outer lens 2 has a seal leg 2a provided along the peripheral edge thereof sealed in a seal groove 1a provided along the opening edge of the lamp body 1 with a sealant (not shown). ing. Further, the outer lens 2 is made of a red resin for the tail lamp TL and the tail & stop lamp T & SL, an amber resin for the turn signal lamp TSL, and a backup lamp B.
It is needless to say that each of the ULs is formed of a white resin, and these are integrally formed by resin molding.

The outer lens 2 is formed with a plurality of lines L1 extending in the horizontal direction over the entire surface at required intervals in the vertical direction in order to enhance the design of the outer lens 2 in appearance. Further, a transparent RR lens 7 is integrally attached to a part of the inner surface of the outer lens 2 in the tail lamp TL, and the RR lens 7 forms an RR portion 8. The RR portion 8 also has a line L2 that is continuous with the horizontal line L1 provided on the outer lens 2.

FIG. 4 shows an outer lens 2 and an RR lens 7.
FIG. 3 is a perspective view of the outer lens 2 viewed from the inner surface side for explaining the lines L1 and L2 provided on the outer lens 2; In the outer lens 2, as shown in an enlarged view in FIG. 5, a diffusion step 10 in which fine fisheye steps are arranged in a mesh pattern on the inner surface thereof to diffuse the light emitted from the bulb is formed in a mesh pattern. Here, a convex fisheye step portion 11 in which fisheye steps 13 projecting in a spherical shape are arranged in a mesh shape, and a concave portion in which fisheye steps 14 formed in a spherical shape are arranged in a mesh shape. And a fisheye step unit 12. The convex fisheye step 11 and the concave fisheye step 12 are each formed in a narrow band extending in the left-right direction of the outer lens 2, and the convex fisheye step 11 and the concave fisheye step 12 are formed.
Are alternately arranged in the vertical direction.

FIG. 6 is a sectional view for explaining the operation of the convex fisheye step 11 and the concave fisheye step 12.
In the convex fisheye step section 11, light transmitted from the inside of the outer lens to the outside forms a real image at a position outside the outer lens 2 by the light condensing action of the step 13 having a convex spherical shape. On the other hand, in the concave fisheye step section 12, the light transmitted from the inside of the outer lens 2 to the outside forms a virtual image at a position inside the outer lens due to the light spreading action by the concave spherical step 14. Therefore, when observing the outer lens 2 from the outside, the convex fisheye step 11 appears to protrude, and the concave fisheye step 12 appears to be concave, and the strip-shaped portions extending in the left-right direction alternate in the vertical direction. A plurality of the above-mentioned lines L1 extending in the lateral direction are observed at the boundary between the two fish-eye steps 11 and 12, which appear to be uneven.

On the other hand, as shown in FIG. 4, the RR section 8 formed so as to straddle between the convex fish-eye step section 11 and the concave fish-eye step section 12, as shown in FIGS. As shown in a perspective view and a plan view in b), a plurality of fine RR steps 15 are arranged. This RR step 15
As is well known, one corner portion of a cube is cut out so that the planar shape becomes a regular hexagon and arranged on a plane so that its ridge lines are aligned.
Are arranged in a planar manner in a honeycomb shape. When light is incident on the RR step 15 from outside, the light can be reflected in the incident direction by reflection on each surface constituting the weight.

Here, one ridge line of each RR step 15 is arranged in the left-right direction of the outer lens 2, that is, in the above-mentioned line L1 direction. In this embodiment, FIG. 8B and 8C, the RR lens 7 corresponds to the convex fisheye step portion 11 and the concave fisheye step portion 12 of the outer lens 2 as shown in the enlarged sectional views taken along the lines Y1 and Y2. RR steps 15A and 15B of the RR step portions of adjacent sections are alternately arranged by a half pitch in the length direction of the band, that is, the line direction L1. They are staggered.

For this reason, RR step 1 on the section boundary line
5A and 15B are 1 at the vertex position in the width direction of the band.
2 (see FIG. 7A), and the shifted end face is exposed by being shifted by 1/2 pitch. Therefore, when the RR portion 8 including the section boundary line is observed from the outside of the outer lens 2, the original light reflection function of the RR step is impaired at the exposed end face, and the light reflection state at this portion becomes different. , And as a result, this section boundary line is observed as the line L2.

Therefore, when the outer lens 2 is observed from the outside, the line L1 is observed at the boundary between the convex fisheye step 11 and the concave fisheye step 12 in the area other than the RR section 8 as described above, In the RR section 8, RR steps 15A and 15 are shifted by １ ／ pitch of the RR lens 7.
A line L2 is observed at the boundary of each section of B. Since the lines L1 and L2 in the region other than the RR portion and the region in the RR portion are located on the same line, they can be observed as a unified line in design. A plurality of lines extending in the direction are observed. Thereby, even when the RR section 8 is provided, it is possible to avoid the appearance of the line being divided, and it is possible to enhance the design of the outer lens or the rear combination lamp.

Further, in the present invention, as a configuration for generating a line in the RR section 8, each of the RR steps 15A, 1B of each of the divided areas 7A, 7B divided into a plurality of strips.
The direction of 5B may be formed in the opposite direction. That is, FIG.
As shown in (1), when one of the ridges is arranged along the line in the RR step 15, the cross-sectional shape along the line becomes asymmetric in the line direction. Therefore, FIG.
9A is a front view, and FIGS. 9B and 9C are X1 and X
As shown in a two-line enlarged sectional view, the RR of each section 7A, 7B is shown.
If the left and right directions of steps 15A and 15B are reversed,
At the boundary, RR steps 15A, 1
There will be a non-contact surface between 5B. Therefore, when the RR section 8 is observed from the outside, the light reflection state on this non-contact surface is different from that of the other portions, and the line RR is exhibited.

Here, in the above embodiment, an example of a line formed on the boundary between the convex fisheye step and the concave fisheye step is shown as a line formed on the outer lens. Even when a plurality of lines are formed by integrally forming thin line-shaped reliefs and steps extending in the direction, the present invention is applied in the same manner as in the above embodiment when the RR portion is formed across these lines. can do.

In the above-described embodiment, the case where the line is extended in the horizontal direction is shown. However, the line of the RR portion is also adapted to the outer lens in which the line is extended in the vertical or oblique direction. By extending in the vertical or oblique direction, a lamp with improved design can be formed.

Further, in the above-described embodiment, the present invention is applied to a rear combination lamp. However, in the case of a tail lamp alone or another lamp, as long as the lamp has an RR portion in a part of its lens. Applicable to

[0018]

As described above, according to the present invention, the RR portion is partitioned into a plurality of regions along the line provided on the lens, and the RR step of each partitioned region has an arrangement pitch along the partition boundary line. Since the configuration is shifted, or the RR step of each partitioned area is configured to be oriented in the opposite direction in the adjacent area, the appearance of the RR section also has a line along the boundary of each partitioned area. As a result, the design uniformity with the line provided on the lens can be obtained, and the design of the entire lamp can be improved.

[Brief description of the drawings]

FIG. 1 is a front view in which the present invention is applied to a rear combination lamp.

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

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is a partial perspective view of the outer lens as viewed from an inner surface.

FIG. 5 is an enlarged perspective view of a main part for explaining a line provided on the outer lens.

FIG. 6 is a cross-sectional view for explaining the appearance of a line provided on the outer lens.

FIG. 7 is a perspective view and a plan view for explaining an RR step provided in the RR section.

FIG. 8 is a front view showing an example of a line provided in the RR section, and an enlarged sectional view along Y1 and Y2.

FIG. 9 is a front view showing another example of the line provided in the RR section, and an enlarged sectional view along X1 and X2.

FIG. 10 is a front view for explaining a problem in a conventional lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp body 2 Outer lens 7 RR lens 7A, 7B Division area 8 RR part 10 Diffusion step 11 Convex fisheye step part 12 Recessed feeling step part 13 Convex fisheye step 14 Recessed fisheye step 15 RR step 15A, 15B RR step L1 Line of outer lens L2 Line of RR section

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60Q 1/30 F21S 8/10

Claims (4)

(57) [Claims] 1. A lens having a lens attached to an opening of a lamp body in which a light source is provided, wherein the lens is provided with a line which can be observed from the outside, and a reflex reflector ( (Hereinafter, referred to as RR) section, the RR section is divided into a plurality of areas along the line, and the RR step of each section area has an arrangement pitch along a section boundary line. A vehicular lamp characterized by being shifted. 2. A lens attached to an opening of a lamp body in which a light source is provided, wherein the lens is provided with a line which can be observed from the outside, and an RR portion is formed in a region straddling the line. In the vehicle lighting device, the RR
The vehicle lamp is characterized in that the part is divided into a plurality of regions along the line, and the RR steps of each of the divided regions are directed in opposite directions in adjacent regions. 3. The vehicular lamp according to claim 1, wherein the line formed on the lens is a boundary line having a different step shape. 4. The vehicular lamp according to claim 3, wherein one of the different step shapes is a concave fisheye step and the other is a convex fisheye step.