JP2002293188A - Lamp device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cross-wind characteristics and a degree of freedom in designing by providing a structure capable of greatly broadening a part for generating separation of an air flow while suppressing restriction in designing. SOLUTION: A lamp device for a vehicle, which is arranged at left and right corner parts of a front part of a vehicle body and which a front surface and a side surface of the corner part are covered with a lens 54, is a means wherein a surface of the lens 54 is formed in a bent surface shape approximately along a curved surface of the corner part, and a separation generating part 55 for separating a flow of air flowing from a front surface side to a side surface side along the bent surface of the lens 54 is formed on a middle part of the bent surface of the lens 54 by projecting the surface of the lens 54 in a lateral direction and extending the projected part in up and down directions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp device for a vehicle, and more particularly, to improving the lateral wind characteristics of a vehicle, that is, in order to reduce the yawing moment coefficient (= Cr value). This technology relates to the technology that causes the separation of the airflow that flows from the front of the vehicle body to the side of the vehicle body at the corners.The front panel and front shield that form the front of the vehicle, such as a one-box car or truck, are continuously provided and the front The present invention relates to a vehicle lamp device suitable for application to a vehicle having a standing shape.

[0002]

2. Description of the Related Art As described above, in a vehicle such as a one-box car or a truck in which a front panel and a front shield forming the front of the vehicle are continuously provided and the front is standing, Since the flow of air from the front side to the side surface is smooth, negative pressure is likely to be generated on the side surface of the vehicle, and the center of gravity of the vehicle is located ahead of the sedan type vehicle. For this reason, when a crosswind is received, a pressure difference is generated between the left and right sides of the vehicle, and a yawing moment is generated in the vehicle.

Therefore, as a conventional technique for preventing the influence of such a cross wind, for example, a technique described in Japanese Utility Model Publication No. 3-31353 and Japanese Utility Model Publication No. 3-13425 (hereinafter referred to as a first conventional technique), , Utility Model Registration 257673
No. 4 (this is referred to as a second prior art) is known.

[0004] In the first prior art, as shown in FIG.
A turbulent fin 02 protruding forward of the vehicle body is provided on the bumper 01 or a panel below the bumper, and the turbulent fin 02 has a plate-like protrusion as shown in FIG.
No. 31353), a projection having a triangular horizontal section as shown in FIG. 3B (Japanese Utility Model Publication No. 3-13425), or a bumper 01 or a part of a panel continuously bent and projected. It is good. In the first prior art, turbulent fins 02 cause turbulence in the air flowing from the front to the side of the vehicle body to separate the flow of air from the side of the vehicle body. The generated yawing moment can be reduced.

[0005] As shown in the perspective view of FIG. 10A and the cross-sectional view of FIG.
The peel generation step 06 is formed in the lamp assembly hole 05 formed at the front of the bumper front surface 04f on the outside in the vehicle width direction, and on the vehicle width direction inside. Means that the front of the lamp 07 is 0
The lamp 07 is provided at the outer end in the vehicle width direction of the lamp mounting hole 05 by arranging the lamp 07 at an angle so as to be the same as 4f. As a result, similarly to the first conventional technique, the flow of air on the side surface of the vehicle body is separated from the vehicle body, and the yawing moment generated when a cross wind is received can be reduced.

[0006]

However, the turbulent fins 02 and the separation generation step 06 in the above-mentioned prior art are not described.
Means for generating peeling such as is provided at a corner portion of the front of the vehicle body, this corner portion is curved so as to be disposed rearward from the center of the front of the vehicle body toward the outside in the vehicle width direction, Further, it is a portion that is largely (small R) bent along the side of the vehicle body. For this reason, in the first prior art, the turbulent fins 02 are formed to have a longer dimension in the vertical direction as compared with the second prior art, so that the area for separating the air flow can be increased. When installing on the outer surface,
For molding and design reasons, turbulent fins 02
It is difficult to increase the amount of protrusion of the film, and if the amount of protrusion is small, the peeling performance cannot be secured. That is, it is difficult to achieve both the securing of design freedom and the obtaining of high peeling performance. In addition, the vertical dimension of the turbulent fins 02 is limited to the vertical dimension of the bumper 01 and the panel below the bumper 01, and it is difficult to form a longer vertical dimension. was there.

On the other hand, in the second prior art, the vertical dimension of the separation generation step 06 is even smaller than the vertical dimension of the bumper 04, and the vertical dimension is small, so that it is difficult to obtain high separation generation performance. . In addition, the separation generation step 0
6 is formed by a step between the front surface of the lamp 07 and the edge of the lamp assembling hole 05, so that in the case of the lamp 07, for example, a round lamp, the separation generation step 0
It is difficult to provide the upper and lower portions 6 at the corners of the bumper 04, and the shape of the lamp 07 is restricted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and provides a structure capable of greatly expanding a portion where air flow separation occurs while suppressing design constraints. While further improving the crosswind characteristics,
The purpose is to improve the degree of freedom in design.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a vehicular lamp device which is disposed at a front left and right corner of a vehicle body and has front and side surfaces of the corner covered by lenses. The surface of the lens is formed in a curved surface shape substantially along the curved surface of the corner portion, and the surface of the lens is protruded laterally at an intermediate portion of the curved surface of the lens, and the protruding portion is moved up and down. And a separation generating portion that extends in the direction and separates the flow of air flowing along the curved surface of the lens from the side surface of the vehicle body.

According to a second aspect of the present invention, in the vehicle lamp device according to the first aspect, a part of a lamp reflecting mirror provided behind the lens overlaps with the separation generating portion in the front-rear direction. It is characterized by being arranged.

According to a third aspect of the present invention, in the vehicle lamp device according to the second aspect, a turn signal lamp is provided as a lamp, and a part of the lamp reflector reflects light of the turn signal lamp to a lens. A notch is provided on the side surface, and a side turn portion for guiding the light of the turn signal lamp guided through the notch to the side and rear of the vehicle body is provided on the side surface of the lens.

[0012]

According to the present invention, in the lens of the lamp device provided on the front surface of the vehicle, a separation generating portion is formed at a corner portion thereof. Since it is possible to provide a portion that can cause separation of the air flow to the separation generation portion in a transparent or substantially transparent lens,
As compared with the case where the peeling generation section is formed on the vehicle body panel or the bumper, the appearance can be made less noticeable, and the effect of improving the degree of freedom in design can be obtained. Furthermore, in the present invention, as described above, since a place for newly forming a peeling generation part is provided, it can be used in combination with a conventional peeling generation part formed on a bumper part. Can be further improved. In addition, in recent years, the lens of the lamp device on the front of the vehicle has been increased in size, and it is possible to form a peeling generation portion in a large area to obtain high peeling performance.

According to the second aspect of the present invention, since a part of the lamp reflecting mirror provided behind the lens is disposed so as to overlap with the separation generating portion in the front-rear direction, the light is reflected by the reflecting mirror. The light distribution loss due to the curved light from the front surface to the side surface at the corner of the lens is reduced, the amount of light traveling forward of the vehicle is increased, and the visibility from the front is improved.

Further, in the invention according to claim 3,
A notch that guides the light of the turn signal lamp to the side of the lens is provided in a part of the lamp reflector, and a side turn that guides the light of the turn signal lamp guided through the notch to the side and rear of the vehicle body is provided on the side of the lens. Because the part is provided, the lighting of the turn signal lamp can be visually recognized from the side and rear of the vehicle body, it is not necessary to separately provide a turn signal lamp for visual recognition from the side and rear,
As described above, the cost can be reduced in the novel configuration having the peeling generation unit.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view showing a front portion of a vehicle to which a vehicle lamp device according to Embodiment 1 of the present invention is applied. This vehicle is a so-called one-box car. On the front of the vehicle, a front panel 1 and a windshield 2 are continuously arranged to form a vehicle front 3 standing upright. In addition, a bumper 4 is provided at the lower end of the vehicle front 3.
Are extended in the vehicle width direction, and the vehicle lamp devices 5 and 5 of the first embodiment are provided adjacent to the upper sides of both right and left ends of the bumper 4.

FIG. 2 is a perspective view showing the bumper 4. The base 4b extends in the vehicle width direction as shown, and extends rearward from the left and right sides of the base 4b toward the vehicle side. Existing wraparound portions 4c, 4c are formed. The wraparound portion 4c has a flat side surface 4s. Also, at the left and right ends of the base 4b,
A horizontally elongated, substantially rectangular fog lamp recess 4d is formed, and a lamp mounting hole 4f is formed at the bottom of the fog lamp recess 4d. Further, at the outer end of the fog lamp concave portion 4d, a separation generating portion 4m is formed so as to protrude toward the vehicle side with respect to the general surface of the bumper 4.

As shown in FIG. 3, which is a cross-sectional view taken along the line S3-S3 in FIG. 2, the cross-sectional shape of the peeling generation section 4m advances toward the vehicle side from the bottom surface of the fog lamp concave portion 4d, and After slightly protruding laterally, it returns to the general surface and converges. In FIG. 3, reference numeral 6 denotes a fog lamp.

Next, the vehicle lamp device 5 will be described. The vehicle lamp device 5 incorporates a plurality of lamps. As shown in the plan view of FIG. 4, a headlamp housing 51 which is disposed at the center of the vehicle and incorporates a headlamp and a vehicle width lamp (not shown). And a combination lamp housing 52 in which a turn signal lamp 56 shown in FIG. 6 is incorporated. Front surfaces of both housings 51 and 52 are covered by lenses 53 and 54, respectively.

The combination lamp housing 5
As shown in FIG. 1 or FIG. 4, the lens 54 covering the front surface of the lens 2 is formed in a curved surface shape substantially along the corner of the vehicle body, and a portion that transitions from the front surface to the side surface includes: A separation generation unit 55 is provided. As shown in the cross-sectional view of FIG. 5 (the cross-sectional view of S5-S5 in FIG. 6), the peeling generation unit 55 protrudes toward the vehicle side, and the rear end portion has the entire curved surface of the lens. It is formed in a substantially triangular shape in plan view so as to converge to the shape. As shown in the front view of FIG.
4 is formed over substantially the entire vertical direction.

The combination lamp housing 5
Inside 2, a turn signal lamp 56 is provided at a lower portion, and a hole 57 for venting hot air having a shape resembling a lamp is formed at an upper portion, although detailed description is omitted. Further, a lamp reflector 58 is provided behind the turn signal lamp 56 as shown in FIG. A part of the lamp reflecting mirror 58 is disposed so as to overlap with the peeling generation unit 55 in the front-rear direction.

In the vehicle lamp device 5 configured as described above, when the traveling wind received on the front surface of the vehicle during traveling of the vehicle flows to the side surface of the vehicle, turbulence occurs in the separation generating unit 55, and The yaw moment generated when the vehicle receives the crosswind can be reduced by reducing the negative pressure formed in the vehicle.

As described above, in the vehicle lamp device 5 of the first embodiment, since the separation generating section 55 is formed on the lens 54 of the combination lamp, the separation generating section 55 is provided at the front end of the vehicle body. I was able to increase the places where I could do things. For this reason, in the first embodiment, a conventionally known peeling generation unit can be improved. That is, as in the first prior art, the peeling generation section is formed in the bumper by projecting the shape of the bumper to make the corner section angular, and as in the second prior art, the lamp mounting hole of the bumper is formed. In the first embodiment, by combining the good points of forming the peeling generation portion with the fog lamp recess portion 4d without damaging the design of the corner portion of the bumper 4 in this embodiment. By combining the structure capable of forming the large separation generating portion 4m with the formation of the separation generating portion 55 in the lens 54, the area for performing the separation generation without impairing the entire design can be increased, and the cross wind characteristics can be increased. Could be improved.
In recent years, such a lamp device 5 has become large in size, and the separation generating section 55 can be provided in such a large area, so that the crosswind characteristics can be greatly improved.

In addition, in the first embodiment, since the separation generating portion 55 of the lens 54 and the lamp reflecting mirror 58 are overlapped in the front-rear direction, when the turn signal lamp 56 is turned on, the lens 54 is turned off. Light distribution loss due to the inclination is reduced as compared with the case where the whole is a curved surface shape, and visibility from the front is improved.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described. Since the second embodiment is a modification of the first embodiment, only the differences from the first embodiment will be described, and configurations common to the first embodiment will be assigned the same reference numerals as the first embodiment. The description is omitted.

In the second embodiment, as shown in a sectional view of FIG. 7 (a sectional view taken along line S6-S6 of FIG. 8) and a front view of FIG. Is provided. Further, at the rear end of the lens 54 having the height of the notch 58c, a side turn portion 54s protruding laterally in a mountain shape is formed, and further, the side turn portion 54s extends rearward of the vehicle. On the inner surface of the rear inclined surface 54r that is inclined toward the center, a small triangular shape is continuously formed, and a jagged prism cut portion 54c that forms a side turn light distribution portion that refracts light from the turn signal lamp 56 is formed. I have.

Therefore, according to the second embodiment, when the turn signal lamp 56 is turned on, the overlapping portion of the lamp reflecting mirror 58 with the peeling generation unit 55 is:
In FIG. 7, light travels forward as indicated by arrow LF.
In the notch 58c, as shown by the arrow LR in FIG.
On the rear inclined surface 54r, the light is refracted by the prism cut portion 54c and advances obliquely rearward. Therefore, the lighting of the turn signal lamp 56 can be visually recognized from the side and the rear, and it is not necessary to separately provide a side turn signal, and cost can be reduced.

Although the embodiment has been described with reference to the drawings, the present invention is not limited to this. For example, the shape of the separation generating unit 55 is not limited to the shape described in the embodiment, but in essence, may be any shape that can form a turbulent flow so as to separate the traveling wind from the side surface of the vehicle body. In addition, the separation generating portion is formed in the middle portion of the curved surface of the lens, but this middle portion is not at the center of the curved surface of the lens, and is not limited to the front portion or the rear portion of the curved surface of the lens, as well as the central portion. It may be formed at an optimum position on the lens surface depending on the position of the curved surface of the lens, the shape of the curved surface, and the like. Further, in the embodiment, the separation generating unit 5 is attached to the lens 54 covering the turn signal lamp 56.
Although an example in which the lens 5 is formed is shown, in a vehicle lamp device, a lens provided in front of a headlight or a lamp for a vehicle width light, as long as the lens is provided at a corner portion between a front surface and a side surface. Other lamps may be used. In the embodiment, a one-box car has been described as an example, but the invention may be applied to other types of vehicles as long as the vehicle has a shape such that a front panel and a front shield are continuously standing. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a front portion of a vehicle to which a vehicle lamp device according to Embodiment 1 of the present invention is applied.

FIG. 2 is a perspective view showing a bumper of the vehicle to which the first embodiment is applied.

FIG. 3 is a sectional view taken along line S3-S3 of FIG. 2;

FIG. 4 is a plan view showing a main part of the first embodiment.

FIG. 5 is a diagram illustrating a vehicle lamp device according to the first embodiment;
It is -S5 sectional drawing.

FIG. 6 is a front view of a main part of the vehicle lamp device according to the first embodiment.

FIG. 7 shows the vehicle lamp device according to the second embodiment in S6 of FIG.
It is -S6 sectional drawing.

FIG. 8 is a front view of a main part of the vehicle lamp device according to the second embodiment.

FIG. 9 is a sectional view showing a conventional technique.

FIG. 10 is a perspective view and a sectional view showing a conventional technique.

DESCRIPTION OF SYMBOLS 1 front panel 2 windshield 3 front of vehicle 4 bumper 4b base 4c wraparound portion 4d recess for fog lamp 4f lamp installation hole 4s side surface 4m peeling generation unit 5 vehicle lamp device 51 headlamp housing 52 combination lamp housing 53 Lens 54 Lens 54c Prism cut portion 54s Side turn portion 54r Backward inclined surface 55 Separation generation portion 56 Turn signal lamp 57 Hot air vent hole 58 Lamp reflector 58c Notch

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K039 AA01 BA03 BA05 CC01 LA02 LB01 LE01 QA01

Claims (3)

[Claims] 1. A vehicular lamp device which is disposed at left and right corners of a front part of a vehicle body and has a front surface and side surfaces of a corner covered by a lens (54), wherein the surface of the lens (54) is a curved surface of the corner. The surface of the lens (54) is projected laterally at an intermediate portion of the curved surface of the lens (54), and the projected portion extends vertically. And a separation generator (55) for separating the flow of air flowing along the curved surface of the lens (54) from the side surface of the vehicle body. 2. A lamp reflecting mirror (58) provided behind the lens (54) is arranged so as to overlap with the peeling generating section (55) in the front-rear direction. The vehicle lamp device according to claim 1. 3. A turn signal lamp (5) as a lamp.
6) is provided, a notch (58c) for guiding the light of the turn signal lamp (56) to the side surface of the lens (54) is provided in a part of the lamp reflecting mirror (58), and the notch (58c) is provided. The side turn part (54s) which guides the light of the turn signal lamp (56) guided through the vehicle body side and rearward is provided on the side surface of the lens (54). Vehicle lamp device.