JPH09207656A - Lighting fixture for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for a specialized bulb to irradiate a turn-around portion or a side-marker portion and realize a lighting fixture smaller and thinner by guiding light from a light source through a correcting step portion provided on part of an inner lens to the turn-around portion or the side-marker portion for irradiation. SOLUTION: A tail lamp for which a turn-around portion 1A is provided on a lighting fixture body 1 to be extended to the side of a vehicle has a side- marker portion 17 formed as a light transmission portion on an outer lens 3 at the turn-around portion and a correcting step portion 18 provided on an inner lens 13 to guide light from a bulb 8 to the side-marker portion 17. The need for a specialized bulb to irradiate the side-marker portion is eliminated, the lamp is made smaller and thinner and the number of parts and the demand of power is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp such as an automobile, and more particularly to a vehicular lamp having a turn-around portion for irradiating the side of the vehicle with light.

[0002]

2. Description of the Related Art Generally, it is not enough for a vehicle lamp to illuminate the front and rear of a vehicle body with light, and it is also necessary to illuminate the side of the vehicle in order to recognize the entire length of the vehicle from the side at night. To be done. For this reason, for example, in a tail lamp installed in the rear part of an automobile, a wraparound portion is provided by extending a part of the taillight to the side of the vehicle body, and the wraparound portion is irradiated with light. In some cases, a side marker portion is provided on a part of the wraparound portion to irradiate the side marker portion with light.

FIG. 7 shows an example of the tail lamp thus constructed, and is a cross-sectional view of the tail lamp at the left rear part of the automobile. In the figure, the lamp body 1 attached to the vehicle body is provided with a wraparound portion 1A, a part of which extends to the left side surface of the automobile. Then, an outer lens 3 having an inner lens 13A provided along a part of the inner side is attached to the front opening of the lamp body 1 including the wraparound portion 1A to define a lamp chamber. A bulb 8 as a light source is provided at the front position of the lamp body 1 in the lamp chamber.
Is supported by the socket 10. The light emitted from the bulb 8 is refracted toward the rear of the vehicle body in a substantially parallel state by the step provided on the inner lens 13A, and the required light distribution is performed by the step provided on the outer lens 3. The light is refracted and emitted so as to satisfy the characteristics.

Further, a small bulb 30 is also provided in the wraparound portion 1A of the lamp body 1 in the lamp chamber, and the bulb 30 irradiates the outer lens 3 extending to the wraparound portion 1A with light. . The outer lens 3 of this wrap-around portion is integrated with a reflex reflector (hereinafter referred to as RR) lens 16A provided with a required reflection step in a close contact state, and RR is not formed in a part thereof. The side marker portion 17A having a light transmitting property is configured. By irradiating the side marker portion 17A with the bulb 30, a so-called side marker lamp portion is configured, and the light transmitted through the side marker portion 17A is configured. Is illuminated to the side of the vehicle due to the required light distribution characteristics.

[0005]

In such a conventional tail lamp, in order to configure the side marker lamp portion, the bulb 3 for irradiating the side marker portion 17A with light is used.
0 is required, and it is necessary to dispose the bulb 30 in the wraparound portion 1A of the lamp body 1 as in the previous example. For this reason, in order to reduce the size, weight, and thickness of the lamp in recent years, it is required to reduce the thickness dimension of the wraparound portion (the dimension in the left-right direction with respect to the vehicle body).
When the bulb is arranged in this part, the socket for arranging the bulb is projected to the rear side of the lamp body,
There is a limit to reducing the thickness dimension of the wraparound portion, and it becomes difficult to achieve the downsizing, weight reduction, and thinning of the above-described lamp.

Further, since a dedicated bulb is required as the side marker lamp portion, it is not preferable in terms of saving the parts of the lamp, and moreover, it is preferable in that the power consumption is increased by the dedicated bulb. is not. It should be noted that such a problem is that not only the lamp including the side marker lamp portion as in the above-described example, but also the lamp configured to positively irradiate the wraparound portion of the lamp with a dedicated bulb for the wraparound portion. The same problem will occur when the is installed. An object of the present invention is to enable thinning of the wraparound portion of the lamp, and reduce the number of parts,
It is intended to provide a vehicle lighting device capable of reducing power consumption.

[0007]

SUMMARY OF THE INVENTION A vehicular lamp of the present invention comprises:
The inner lens of the lamp provided with a wraparound portion extending to the side of the vehicle is provided with a correction step portion for guiding light from a light source provided in the lamp to an outer lens of the wraparound portion. To do. For example, a side marker portion is integrally provided on the outer lens of the wraparound portion of the tail lamp installed at the rear portion of the vehicle, and the correction step portion is configured to guide the light from the light source to this side marker portion.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. 1 is an external view of an embodiment in which the present invention is applied to a rear combination lamp on the left rear part of an automobile, FIG. 2 is a sectional view taken along the line AA, FIG. 3 is a sectional view taken along the line BB, and FIG. 4 is a partially exploded perspective view. . In these figures, a lamp body 1 is configured to have a wrap-around portion 1A that is curved and formed into a substantially L shape from a left rear portion to a left side surface portion of a vehicle body of a vehicle. It is fixed to the vehicle body (not shown). An outer lens 3 is attached to an opening extending from the front surface to the side surface of the lamp body 1, and the shade 4 and the outer lens 3 which are erected on the inner surface of the lamp body 1 serve as a lens.
Two light chambers are defined, and in this embodiment, the tail &
The stop lamp T & SL defines the lamp chambers 6 and 7 of the turn signal lamp TSL on the lower side.

The inner surface of the lamp body 1 is coated or vapor-deposited with aluminum as a reflector. Further, it goes without saying that the outer lens 3 is integrally formed with red and amber lenses corresponding to the respective lamps. Further, a seal leg portion 3a is integrally formed on a peripheral edge portion of the outer lens 3, is fitted into a seal groove 1a formed along an opening peripheral edge of the lamp body 1, and is fixed and sealed by a sealant 5. Needless to say.

Further, the lamp chamber 6 of each of the lamps defined is
Bulbs 10 and 11 mounted on the lamp body 1 are provided with bulbs 8 and 9 as light sources, respectively.
Supported by and electrical connection is made. Also, tail &
In the stop lamp T & SL, a reflector 12 is arranged from the back surface side of the bulb 8 to the lower surface side, and is supported by the lamp body 1. Furthermore, the light chambers 6 and 7 of the tail & stop lamps T & SL and the turn signal lamp TSL
Inner lenses 13 and 14 are provided inside the outer lens 3 and are supported by the lamp body 1.
These inner lenses 13 and 14 have steps for forming a Fresnel lens, for example.
The light emitted from each of the bulbs 8 and 9 is collected in a parallel state toward the rear of the automobile, and a required light distribution characteristic can be obtained by a diffusion step 15 provided in the outer lens 3. . However, in the tail & stop lamps T & SL, the inner lens 13 is arranged only in the area excluding the wraparound portion 1A.

Further, the tail & stop lamp T & S
A side RR lens 16 constituted by a reflex reflector (RR) lens for reflecting light emitted from the outside in the opposite direction is attached to the outer lens 3 in the region of the wraparound portion 1A in L. In the side RR lens 16, the RR step is not provided in a part of the rectangular area, and instead, the diffusion step 23 in which a plurality of kamaboko type steps extending in the vertical direction are arranged in the horizontal direction is provided. This area is configured as the side marker portion 17.

Further, in order to guide the light from the bulb 8 of the tail & stop lamp T & SL to the side marker portion 17, the inner lens 13 is provided with a correction step portion 18. This correction step unit 18
An inner protruding edge portion 1 in which a side edge portion on the wraparound portion side of the inner lens 13 is formed to protrude toward the inner surface side of the lamp body 1.
The correction step portion 18 does not have the above-mentioned Fresnel lens step. Then, the light emitted from the bulb 8 is transmitted through the correction step portion 18 and reaches the side marker portion 17.

That is, as shown in FIG. 5A, a large number of horizontal bending steps 20 having a sawtooth cross section and extending in the vertical direction are formed on the outer surface of the correction step portion 18, and the valve 8 is formed. When the light from is transmitted, it is refracted toward the front of the vehicle. Further, as shown in FIG. 5B, a plain passage portion 22 is formed on the inner side surface of the correction step portion 18 at a position where the valve 8 and the side marker portion 17 are connected to each other. A large number of vertical refraction steps 21 having a saw-toothed surface and extending in the horizontal direction are formed. When the light from the bulb 8 is transmitted, the horizontal light is transmitted as it is and the upward light is downward. The downward light is refracted upward in the vertical direction. In this case, the refraction steps 20 and 21 are designed so that the light from the bulb 8 that is refracted and focused by the horizontal refraction step 20 and the vertical refraction step 21 is projected to the side marker portion 17. To be done.

In the rear combination lamp of this structure, particularly in the tail & stop lamp T & SL,
Of the light emitted from the bulb 8, the light emitted toward the front of the vehicle is reflected by the reflector 12, and the light emitted toward the side or the rear of the vehicle together with the inner lens 1
After being transmitted through the outer lens 3, the light is transmitted through the outer lens 3 and is then diffused by the diffusing step 15 and emitted toward the rear of the vehicle as a required light distribution characteristic. On the other hand, the light emitted from the bulb 8 toward the front side of the vehicle is transmitted through the correction step portion 18 of the inner protruding edge portion 19 of the inner lens 13, and further through the side marker portion 17 provided on the outer lens 3 to the outside. And the side marker portion 17 is turned on as a side marker lamp portion.

At this time, when the light from the bulb 8 is transmitted through the correction step portion 18, as shown in FIG. 6A, the light from the bulb 8 is horizontally forwarded by the horizontal refraction step 20 as shown in FIG. 6A. Since the light is refracted toward the side marker 17 and is projected onto the side marker 17, the light transmitted through the side marker 17 is also projected toward the front of the automobile. At this time, since the light is diffused in the front-rear direction of the vehicle by the diffusion step 22 provided in the side marker unit 17, as a result, the light projection at the required horizontal light distribution angle is realized with respect to the side of the vehicle. Will be.

Further, as shown in FIG. 6B, the light from the bulb 8 is projected on the side marker portion 17 in the vertical direction in a state of being focused in the vertical direction by the vertical refraction step 21, so that the side marker portion 17 is provided. The light that has passed through is emitted to the side of the automobile while its vertical diffusion is suppressed, and light projection at a required vertical light distribution angle is realized.

Therefore, in the rear combination lamp of this embodiment, the tail & stop lamp T is used as the light source of the side marker portion 17 formed in the wraparound portion 1A.
The & SL valve 8 can also be used, and even in that case, the required light distribution characteristics required for the side marker portion 17 can be satisfied. Therefore, a dedicated bulb is not required when constructing the side marker lamp part, and the lamp can be made smaller and thinner than the conventional structure that required a bulb in the wraparound part, and the number of parts and consumption can be reduced. Power consumption can also be reduced. Also,
By reducing the number of parts, it is also possible to reduce the number of assembly steps for the rear combination lamp.

Further, although the correction step section 18 is provided in the present invention, since the correction step section 18 is constituted by a part 19 of the inner lens 13, the number of parts and the assembly by the correction step section 18 are provided. There will be no increase in man-hours. Further, since the refraction steps 20 and 21 provided in the correction step section 18 can be formed simultaneously with the molding of the inner lens 13, the number of manufacturing steps of the inner lens 13 is increased or the manufacturing cost is increased. Nor.

Although detailed description is omitted, in the turn signal lamp TSL, the light from the bulb 9 passes through the inner lens 14 or directly passes through the outer lens 3 to have a desired light distribution characteristic. The same light irradiation is performed as before.

Although the present invention is applied to the rear combination lamp in the above embodiment, the present invention can be similarly applied to any lamp having a side marker portion integrally formed in the wraparound portion. . For example, in addition to the above-mentioned lamps, a backup lamp may be integrated. Also,
The present invention can be applied to a lamp which is not provided with the side marker portion in the wraparound portion and is configured to simply illuminate the wraparound portion. In this case, since it is required to project the light from the bulb on the entire wraparound portion, it is possible to design the shape of the bending step of the correction step portion provided on the inner lens as a step shape with high light diffusion property. is necessary.

Further, in the above-described embodiment, horizontal and vertical refraction steps are provided on both surfaces of the correction step portion, but the required light distribution characteristics, the light diffusion characteristics of the diffusion step provided on the outer lens, etc. Depending on the situation, the refraction step, the light collection step or the diffusion step may be formed on only one of the surfaces.

[0022]

As described above, the lamp of the present invention guides the light emitted from the light source to the wraparound portion or the side marker portion through the correction step portion provided in a part of the inner lens and irradiates them. Therefore, a dedicated bulb for irradiating the wraparound part and the side marker part is not required, and the lamp can be made smaller and thinner, and the number of parts and power consumption can be reduced. There is an effect that can be done.

[Brief description of drawings]

FIG. 1 is an external perspective view of an embodiment of the present invention.

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 partially exploded perspective view of FIG.

FIG. 5 is a perspective view showing respective refraction steps on the front surface side and the back surface side of the correction step portion.

FIG. 6 is a schematic diagram showing a refraction state of light by a correction step.

FIG. 7 is a cross-sectional view of an example of a conventional tail lamp having a side marker portion.

[Explanation of symbols]

 1 Lighting body 1A Wrap-in part 3 Outer lens 8,9 Bulb 13,14 Inner lens 17 Side marker part 18 Correction step part 20 Horizontal refraction step 21 Vertical refraction step

Claims (5)

[Claims] 1. A lamp body provided with a wrap-around portion extending to a side of a vehicle, a light source arranged in the lamp body, and light emitted from the light source attached to the lamp. An inner lens and an outer lens for irradiating as a light distribution characteristic of the inner lens, and the inner lens is provided with a correction step portion for guiding the light from the light source to the outer lens of the wraparound portion. Vehicle lighting. 2. A tail lamp installed at the rear of a vehicle, a side marker portion is integrally provided on an outer lens of a wrap-around portion of the tail lamp, and the correction step portion receives light from a light source of the tail lamp. The vehicular lamp according to claim 1, wherein the vehicular lamp is configured to be guided to the marker portion. 3. The vehicular lamp according to claim 2, wherein a reflex reflector is provided around the side marker portion of the outer lens, and the side marker portion is formed by a lens having a horizontal diffusion ridge. 4. The correction step section is provided integrally with a part of the inner lens, and a refraction step for condensing light from the light source to the side marker section is formed on at least one surface thereof. Item 2 or 3 vehicle lighting device. 5. The refraction step includes at least one of a vertical refraction step of concentrating light from a light source in a substantially horizontal direction and a horizontal refraction step of refracting light from the light source toward the front of the vehicle. The vehicle lamp according to claim 4.