JPH0628906A - Lamp for vehicle - Google Patents

Abstract

PURPOSE:To improve the appearance of a lamp in the daytime, and improve the evenness of brightness in the nighttime by having the continuity of pattern between an effective reflecting surface part and an ineffective reflecting surface part of the inner surface of a lamp body. CONSTITUTION:The inner surface of a lamp is provided with an effective reflecting surface part 7 for reflecting the light output from a light source to the optical axis direction and ineffective reflecting surfaces 8, 9 continued to the outside of the effective reflecting surface part 7, and a step 10 is formed in the part 7. Similar steps 20, 21 having the nearly same pitch with the step 10 of the part 7 are formed so as to have the continuity of pattern between the steps 20, 21 and the step 10. The steps 20, 21 disperse the light from the light source similarly with the step 10 to make the brightness of the parts 8, 9 nearly equal to the brightness of the part 7. In the case where the inside of a lamp is seen from the front of the lamp through a front lens, since the whole of the inner surface of the lamp body 1 presents the continuous pattern, appearance of the lamp is improved, and the brightness of the parts 8, 9 is made nearly equal to the brightness of the part 7 at the time of lighting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp equipped with a so-called wrap-around lens which is attached to a corner of a vehicle body and a part of the lens extends to the side surface of the vehicle body, for example, a turn signal lamp,
The present invention relates to a vehicular lamp suitable for being applied to a cornering lamp, a clearance lamp and the like.

[0002]

2. Description of the Related Art Conventionally, a vehicular lamp, particularly a turn signal lamp or the like arranged at a corner portion on the front surface (or rear surface) of a vehicle body due to traffic safety, design requirements, etc. As can also be seen, the lamp body and the front lens are tilted substantially L-shaped or toward the rear of the vehicle body along the corners of the vehicle body so that part of the light from the bulb is emitted to the side of the vehicle body. FIG. 8 is a perspective view showing a conventional example of a lamp body that constitutes such a vehicle lamp, and a schematic description thereof will be given. 1 is a lamp body integrally formed by injection molding such as ABS. The lamp body 1 has a front surface that is open and is curved in a convex curved shape in plan view so as to match the curved shape of the corner of the vehicle body. A light chamber 3 and a second light chamber 4 opening to the front and side of the vehicle body are defined. The first light room 3
For example, it forms a light room for a parking and clearance lamp. The lamp chamber 3 is formed into a substantially box shape, and a parking and clearance lamp bulb 5 is inserted and arranged through a bulb mounting hole formed in a rear wall thereof. On the other hand, the second lamp chamber 4 is formed to be long and curved so as to extend from the front surface of the vehicle body to the side surface of the vehicle body, and the turn signal lamp bulb 6 is also inserted and arranged through the bulb mounting hole formed in the rear wall thereof. ing. The inner surface of the second lamp chamber 4 has an effective reflection surface portion 7 that is directed toward the front of the vehicle body and reflects the light emitted from the bulb 6 in the optical axis direction (front of the vehicle body), and is continuous on both sides of the effective reflection surface portion 7. The ineffective reflection surface portions 8 and 9 which are provided respectively and do not directly contribute to the light distribution in front of the vehicle body are provided. The effective reflection surface portion 7 is curved in a parabolic shape, and a large number of cylindrical steps 10 extending upward and downward are arranged side by side in the vehicle width direction over the entire surface. The one ineffective reflection surface portion 8 is formed on one side of the partition wall 2 so that it is located on the front side of the vehicle body with respect to the effective reflection surface portion 7, and has a flat surface substantially parallel to the front and rear directions of the vehicle body. Is forming. The other invalid reflection surface portion 9 is also a flat surface and is formed so as to extend rearward of the effective reflection surface portion 7 from the effective reflection surface portion 7, so that it is behind the effective reflection surface portion 7 with respect to the bulb 6. The inner surface of the lamp body 1 has a reflective surface formed on the entire surface by vacuum evaporation of aluminum, silver coating, or the like.

[0003]

In the conventional vehicular lamp as described above, the light distribution performance in the front of the vehicle body is enhanced to improve the lighting effect, and the reflector has a uniform glossy feeling when the lamp is not lit. For the purpose of improving the appearance, the step 10 is provided on the parabolic effective reflection surface portion 7 to diffuse the light emitted from the bulb in the vehicle width direction, while the invalid reflection surface portion 8 not related to the light distribution of the lamp. No. 9 is the no-step surface, but if this is done, there is the problem that the lighting of the lamp does not look good. That is, when the lamp is viewed from the front of the vehicle body through the front lens (not shown) that hermetically covers the front opening of the lamp body 1 in the daytime, the effective reflection surface portion 7 looks like a vertical striped pattern because of step 10. However, this is interrupted at the boundary with the ineffective reflection surface portions 8 and 9 forming the no-step surface, so that the continuity of the pattern is lacking, and the reflected light from the ineffective reflection surface portions 8 and 9 is effective at the time of lighting. Since the light is stronger than the light diffused in step 10 of 7, the ineffective reflection surface portion is conspicuous and the overall brightness becomes nonuniform.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide the effective reflection surface portion and the ineffective reflection surface portion of the inner surface of the lamp body with pattern continuity. Accordingly, it is an object of the present invention to provide a vehicular lamp in which the appearance of the lamp in the daytime and the uniformity of brightness in the nighttime are improved.

[0005]

In order to achieve the above object, the present invention has an effective reflection surface portion whose inner surface reflects light emitted from a light source in the direction of the optical axis, and is provided continuously outside the effective reflection surface portion. A lamp body having a step formed on the effective reflection surface portion and a lens is arranged on the front surface of the lamp body, wherein the effective reflection surface portion is provided on the invalid reflection surface portion. The pseudo step having substantially the same pitch as that of the step is provided.

[0006]

In the present invention, the pseudo step of the ineffective reflection surface section forms a pattern similar to the step of the effective reflection surface section, so that the pattern has continuity. Further, in the pseudo step, the light from the light source is diffused to make the brightness of the ineffective reflection surface portion substantially equal to the brightness of the effective reflection surface portion, as in the above step.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicular lamp according to the present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is an external perspective view of a lamp body showing a first embodiment in which the present invention is applied to a front turn signal lamp mounted on the right front side of a vehicle, FIG. 2 is a front view of the body, and FIG. III −
FIG. 4 is a sectional view taken along line III, and FIG. 4 is a view seen from the direction of arrow B in FIG. In the figure, the same components as those in FIG. 8 are designated by the same reference numerals and the description thereof will be omitted. In this example,
Pseudo steps 20 and 21 having substantially the same pitch as the step 10 of the effective reflection surface portion 7 are provided on the invalid reflection surface portions 8 and 9 which are continuously provided on both sides of the effective reflection surface portion 7 in the vehicle width direction (direction of arrow A in FIG. 1). ) Are arranged in parallel to each other.

Reference numeral 22 denotes a bulb mounting hole formed in the central portion of the effective reflection surface 7, 23 is a bulb mounting hole similarly formed in the back wall of the first lamp chamber 3, and 24 is the inside and outside of the lamp body 1. An air hole 25 communicating with each other is a front lens that covers the front opening of the lamp body 1, and a sealing leg 26 projecting from the rear peripheral edge of the front lens 25 extends around the entire front peripheral portion of the lamp body 1. Seal groove 2 that opens forward
7 and is fixed by an adhesive 28. The front lens 25 includes a white first lens 25A that covers the first lamp chamber 3 and an amber second lens 25B that covers the second lamp chamber 4. The front lens 25 having the above-mentioned structure is used for the first and second lenses 25.
Since the colors of A and 25B are different, they cannot be molded at the same time by one mold, and therefore they are manufactured by the well-known multicolor molding method. That is, this multicolor molding method
On the other hand, for example, the first lens 25A is injection-molded by a first lens molding die in advance, and then the first lens 25A is formed.
A is loaded into a second lens molding die, a molten resin is injected and filled into the cavity, and the second lens 25B is integrally bonded to the first lens 25A to produce one front lens 25. Is.

The effective reflection surface portion 7 forms a parabolic curved surface. When the step 10 is formed on the effective reflection surface portion 7 having such a curved surface, the appearance of the step 10 differs depending on the viewing direction. Therefore, in the present embodiment, step 10 is formed so as to have a vertical striped pattern of substantially the same pitch in a front view as shown in FIG.
Therefore, when step 10 is viewed from the left side of the lamp body 1, the central portion is curved so as to be convex toward the invalid reflection surface portion 9 side as shown in FIG. When viewed from the right side, it looks like a curved striped pattern.

The pseudo steps 20 and 21 are sawtooth-like steps which are continuously arranged side by side in the vehicle width direction. However, the pseudo steps 20 and 21 may be cylindrical steps similar to the step 10 without being limited thereto. Also, pseudo steps 20, 21
When the lamp body 1 is viewed from the direction of arrow B in FIG. 3, the lamp body 1 is curved so as to form a pattern continuous with step 10 as shown in FIG. There is. Such a pseudo step 2
When 0 and 21 are viewed from the front of the lamp, the invalid reflection surface portions 8 and 9
2 is inclined, it looks like a thin vertical stripe pattern as shown in FIG.

Thus, in the vehicular lamp having such a structure, the dummy reflection surface portions 8 and 9 also have the pseudo step 2.
Since 0 and 21 are provided, when the inside of the lamp body 1 is seen through the front lens 25 during the daytime, the inside of the second lamp chamber 4 looks like a continuous striped pattern over the entire width. It looks good. Further, at the time of lighting, the pseudo steps 20 and 21 diffuse the light from the bulb 6 in the vehicle width direction similarly to the step 10 of the effective reflection surface portion 7, so that the brightness of the effective reflection surface portion 7 is substantially equal to the brightness of the effective reflection surface portion 7. The appearance is also good.

5 to 7 show a second embodiment of the present invention. FIG. 5 is a sectional view taken along line VV of FIG. 6, FIG. 6 is a front view of a lamp body, and FIG. 7 is a left side of the body. It is a side view. This embodiment shows an example applied to a lamp body 30 of a front turn signal lamp made of a single body. The lamp body 30 has a bulb mounting hole 31 formed at the center of the rear wall, and a front turn signal lamp bulb 32 is inserted from the rear through the bulb mounting hole 31. The right side surface of the lamp body 30 with respect to the bulb mounting hole 31 is curved with a large curvature so as to be convex toward the back side and extends obliquely forward to form an effective reflection surface portion 33, and the cylindrical step 34. Is formed over the entire surface. This step 34 is the lighting body 30
In a front view (as viewed from the direction of arrow C in FIG. 5), the stripe pattern is curved so as to be convex to the right in FIG. 6, and in the left side (as viewed in the direction of arrow D in FIG. 5), It is formed so as to exhibit a curved striped pattern (FIG. 7) to be convex. On the other hand, the inner surface of the body on the left side of the valve mounting hole 31 is formed as an ineffective reflection surface portion 35 by obliquely extending toward the rear of the vehicle body, and has a pseudo step 36 having substantially the same pitch as the step 34. Pseudo step 36
Has a wing shape in cross section, so that the invalid reflection surface portion 3
5 and a chamfered portion 3 formed of a convex curved surface connecting the linear portion 36a and the invalid reflection surface portion 35.
6b and has a striped pattern (FIG. 6) curved so as to be convex to the left when viewed from the front of the lamp body 30,
When viewed from the left side, it also has a striped pattern (FIG. 7) curved so as to be convex toward the left side. However, the effective reflection surface portion 33
In the vicinity of, the curve shows substantially the same as the striped pattern of step 34, and as it recedes from the effective reflection surface portion 33, it becomes closer to a straight line and approaches the striped pattern at the end portion of the reflection surface. Even with such a configuration, the same effect as that of the above embodiment can be obtained.

Here, the reason why the step 36 is chamfered into a convex curved surface with the wing shape is to prevent the stripe pattern from being doubled depending on the viewing angle (direction of arrow E in FIG. 5). . That is, if there are corners, the corners become stripes, so one step forms two stripes with the corners sandwiched between them. However, if the corners are chamfered parts 36b having a convex curved surface, the stripes are This is because it is not possible to form one striped pattern. Further, in the configuration in which the pseudo step 36 is located right beside the light source as shown in FIG. 3, when the step is formed in a sawtooth shape, the valley portion becomes a shadow and the shadow portion also becomes a thick striped pattern. I will end up. In addition, if the convex curved surface has a large radius of curvature, it is difficult to see the difference between steps, and it becomes difficult to see the striped pattern. In this respect, with the airfoil as described above, a beautiful striped pattern can be formed. In a V-shaped step whose cross-sectional shape is bilaterally symmetric, both the top and the valley have a striped pattern, and therefore two cylindrical steps are considered to be one step.

[0014]

As described above, in the vehicular lamp according to the present invention, the effective reflection surface portion is provided on the invalid reflection surface portion of the lamp body which has the effective reflection surface portion and the invalid reflection surface portion and is attached to the corner of the vehicle body. Since it is configured by providing pseudo steps with substantially the same pitch as the formed steps, when you look inside the lamp through the front lens from the front of the lamp, the entire inner surface of the lamp body has a continuous pattern, so the appearance of the lamp is improved. In addition, the brightness of the ineffective reflection surface portion at the time of lighting can be made substantially equal to the brightness of the effective reflection surface portion.

[Brief description of drawings]

FIG. 1 is an external perspective view of a lamp body showing a first embodiment when the present invention is applied to a front turn signal lamp that is mounted on the right front side of a vehicle.

FIG. 2 is a front view of the body.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a view as seen from the direction of arrow B in FIG.

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

FIG. 6 is a front view of a lamp body showing a second embodiment of the present invention.

FIG. 7 is a left side view of the same body.

FIG. 8 is an external perspective view of a lamp body in a conventional vehicle lamp.

[Explanation of symbols]

 1 Lamp Body 2 Partition Wall 3 First Lamp Room 4 Second Lamp Room 5, 6 Bulb 7 Effective Reflective Surface Area 8, 9 Invalid Reflective Surface Area 10 Steps 20, 21 Pseudo Step 30 Lamp Body 33 Effective Reflective Surface Area 34 Step 35 Invalid Reflective surface 36 Pseudo step

Claims (1)

[Claims] 1. An effective reflection surface portion whose inner surface reflects light emitted from a light source in an optical axis direction, and an ineffective reflection surface portion which is continuously provided outside the effective reflection surface portion. In a vehicular lamp in which a lamp body having steps is attached to a corner of a vehicle body and a lens is arranged in front of the lamp body, a pseudo step having substantially the same pitch as the step of the effective reflecting surface section is provided on the invalid reflecting surface section. Characteristic vehicle lighting.