JP4248758B2 - Lamp device for vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular lamp device, and more particularly, to improve the crosswind characteristics of a vehicle, that is, to further reduce the yawing moment coefficient (= Cr value), the vehicle body from the front of the vehicle body at the left and right corners of the front of the vehicle body. A vehicle that has a front panel and a front shield that form the front of the vehicle, such as a one-box car or a truck, with a continuous front panel, such as a one-box car or a truck. The present invention relates to a vehicular lamp device suitable for application to the above.
[0002]
[Prior art]
As described above, in the case of a vehicle having a front surface that is continuously provided with a front panel and a front shield that form the front surface of the vehicle, such as a one-box car and a truck, Since the air flow is smooth, negative pressure is likely to be generated on the side of the vehicle, and the center of gravity of the vehicle is ahead of the sedan type vehicle.
For this reason, when a cross wind is received, a pressure difference occurs between the left and right sides of the vehicle, which causes a yawing moment in the vehicle.
[0003]
Therefore, as a conventional technique for preventing the influence of such a cross wind, for example, the technique described in Japanese Utility Model Publication Nos. 3-135313 and 3-1425 (this is referred to as a first conventional technique), a utility model, and the like. The technique of registration No. 2576734 (this is the second conventional technique) is known.
[0004]
In the first prior art, as shown in FIG. 9, a turbulent fin 02 projecting forward of the vehicle body is provided on the bumper 01 or a panel below the bumper. A plate-like protrusion as shown in (No. 3-31353), a protrusion having a triangular horizontal section (No. 3-13425) as shown in FIG. That is, the portion may be continuously bent and protruded. In the first prior art, when the turbulent fins 02 cause turbulent flow in the air flowing from the front side of the vehicle body to the side, the air flow is separated from the side surface of the vehicle body, thereby receiving a cross wind. The generated yawing moment can be reduced.
[0005]
In the second prior art, as shown in the perspective view of FIG. 10A and the cross-sectional view of FIG. 10B, a separation generation step 06 is provided in the lamp built-in hole 05 formed in the bumper 04. The separation generation step 06 is such that the front surface of the lamp 07 is rearward of the bumper front surface 04f on the outer side in the vehicle width direction, and the front surface of the lamp 07 is the same as the bumper front surface 04f on the inner side in the vehicle width direction. It is provided at the outer end of the lamp mounting hole 05 in the vehicle width direction by being inclined. As a result, as in the first prior art, the yawing moment generated when the airflow on the side surface of the vehicle body is separated from the vehicle body and a cross wind is received can be reduced.
[0006]
[Problems to be solved by the invention]
However, the means for generating separation such as the turbulent fins 02 and the separation generation step 06 in the above-described prior art is provided at the corner portion of the front portion of the vehicle body. It is a portion that is curved so as to be arranged rearward as it goes outward in the direction, and is further bent (largely R) along the side of the vehicle body. For this reason, in the first conventional technique, the turbulent fin 02 can be formed to be longer in the vertical direction than the second conventional technique to increase the area for separating the air flow. When it is provided on the outer surface, it is difficult to increase the protruding amount of the turbulent fin 02 for molding and design reasons, and when the protruding amount is small, the peeling performance cannot be ensured. That is, it is difficult to achieve a balance between ensuring the degree of freedom of design and obtaining high peel generation performance.
In addition, the vertical dimension of the turbulent fin 02 is limited to the vertical dimension of the bumper 01 and the panel below it, and it is difficult to form a longer vertical dimension. was there.
[0007]
On the other hand, in the second prior art, the vertical dimension of the peeling generation step 06 is further smaller than the vertical dimension of the bumper 04, the vertical dimension is small, and it is difficult to obtain high peeling generation performance.
In addition, since the separation generation step 06 is formed by a step between the front surface of the lamp 07 and the edge of the lamp mounting hole 05, in the shape of the lamp 07, for example, a round lamp, the separation generation step 06 is separated. It is difficult to provide the generation step 06 vertically at the corner of the bumper 04, and the shape of the lamp 07 is limited, and the degree of design freedom is accordingly reduced.
[0008]
The present invention has been made paying attention to the above-mentioned conventional problems, and provides a structure capable of greatly expanding the location where the separation of the air flow is generated while suppressing the restrictions on the design. The aim is to improve the design and the degree of freedom of design.
[0009]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a vehicle lamp device that is disposed at a corner portion on the left and right sides of a front portion of a vehicle body, and the front surface and side surfaces of the corner portion are covered with a lens. The surface of the lens is perpendicular to the vehicle front-rear direction from the curved surface of the lens at a portion where the curved surface of the lens transitions from the front surface to the side surface. is bent consists of a surface facing the vehicle front extending toward the side of the vehicle, a surface facing the vehicle side that extends toward the rear of the vehicle is the surface or et flexion song, and, with the rear end portion to protrude is formed in a planar Misan triangular shape so as to converge on the curved surface shape of the lens, by extending over the projecting portion substantially vertically entire length of the lens, the curved surface of the lens Flowing along And a means, characterized in that the peeling generating unit for peeling the flow of air from the vehicle side is formed.
[0010]
According to a second aspect of the present invention, in the vehicular lamp device according to the first aspect , a lamp and a lamp reflecting mirror are provided behind the lens , and a part of the lamp reflecting mirror is connected to the peeling generation unit. It is characterized by being overlapped in the front-rear direction.
[0011]
According to a third aspect of the present invention, in the vehicular lamp device according to the second aspect, a turn signal lamp is provided as a lamp, and the light of the turn signal lamp is guided to a side surface of the lens in a part of the lamp reflector. A notch portion is provided, and a side turn portion for guiding the light of the turn signal lamp guided through the notch portion to the side of the vehicle body and the rear side is provided on the side surface of the lens so as to protrude in a mountain shape. To do.
[0012]
【The invention's effect】
In 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 the corner portion, and in addition to the technology provided in the conventional bumper portion, a new separation of airflow is newly provided. Can be provided, and the peel generation part is formed on a transparent or substantially transparent lens. Therefore, it is more appearance than forming the peel generation part on a vehicle body panel or a bumper. It is possible to prevent the image from becoming conspicuous and to improve the design freedom.
Furthermore, in the present invention, as described above, since a place for newly forming a peeling generation portion is provided, it can be used in combination with a peeling generation portion formed on a conventional bumper portion. Can be further improved.
In addition, in recent years, the lens of the lamp device on the front surface of the vehicle has been increased in size, and it is possible to obtain a high peel generation performance by forming a peel generation part in a large area.
[0013]
In the invention according to claim 2, since a part of the lamp reflecting mirror provided behind the lens is arranged so as to overlap with the peeling generation portion in the front-rear direction, the light reflected by the reflecting mirror However, the light distribution loss due to the curve from the front surface to the side surface in the corner portion of the lens is reduced, the amount of light traveling forward of the vehicle is increased, and visibility from the front is improved.
[0014]
According to the third aspect of the present invention, a cutout portion for guiding the light of the turn signal lamp to the side surface of the lens is provided in a part of the lamp reflector, and the turn guided through the cutout portion is provided on the side surface of the lens. The side turn part that guides the light of the signal lamp to the side and rear of the vehicle body is provided, so that the lighting of the turn signal lamp can be viewed from the side and rear of the vehicle body. It is not necessary to provide the turn signal lamp, and as described above, the cost can be reduced in the new configuration having the peeling generation unit.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
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 the vehicular lamp device of Embodiment 1 of the present invention is applied.
This vehicle is a so-called one-box car, and on the front surface of the vehicle, the front panel 1 and the windshield 2 are continuously arranged so that the front surface 3 of the vehicle stands up.
A bumper 4 extends in the vehicle width direction at the lower end portion of the front surface 3 of the vehicle, and the vehicle lamp devices 5 and 5 according to the first embodiment are provided adjacent to the upper sides of the left and right end portions of the bumper 4. ing.
[0016]
FIG. 2 is a perspective view showing the bumper 4, and as shown in the drawing, the base 4b extends in the vehicle width direction, and extends from the left and right of the base 4b to the vehicle side so as to wrap around the vehicle side. The wraparound portions 4c and 4c are formed. The wraparound portion 4c has a flat side surface 4s.
Further, at the left and right end portions of the base portion 4b, a horizontally elongated fog lamp recess 4d is formed, and a lamp assembly hole 4f is formed at the bottom of the fog lamp recess 4d. Further, a peeling generation portion 4m is formed at the vehicle outer end portion of the fog lamp recess 4d so as to protrude toward the vehicle side with respect to the general surface of the bumper 4.
[0017]
As shown in FIG. 3, which is a sectional view taken along line S3-S3 in FIG. 2, the cross-sectional shape of the peeling generation portion 4m advances from the bottom surface of the fog lamp recess 4d toward the vehicle side, and is on the side of the general surface of the bumper 4. After slightly protruding in the direction, the shape is formed so as to return to the general surface and converge. In FIG. 3, 6 is a fog lamp.
[0018]
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, the vehicle lamp device 5 is arranged on the vehicle center side and includes a headlamp housing 51 incorporating a headlamp and a vehicle width lamp (not shown). 6 and a combination lamp housing 52 incorporating a turn signal lamp 56 shown in FIG. 6, and the front surfaces of both housings 51 and 52 are covered with lenses 53 and 54, respectively.
[0019]
The lens 54 covering the front surface of the combination lamp housing 52 is formed in a curved surface shape substantially along the corner of the vehicle body as shown in FIG. 1 or FIG. 4 as a whole, and moves from the front surface to the side surface. In the portion, a peeling generation unit 55 is provided. As shown in the cross-sectional view of FIG. 5 (S5-S5 cross-sectional view of FIG. 6), the peeling generation unit 55 protrudes toward the vehicle side, and the rear end portion is 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. 6, the peeling generation unit 55 is formed over the entire length of the lens 54 in the substantially vertical direction.
[0020]
Inside the combination lamp housing 52, a turn signal lamp 56 is provided in the lower part, and a detailed explanation is omitted in the upper part, but a hole 57 for releasing hot air shaped like a lamp is formed in the upper part.
Further, a lamp reflecting mirror 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 the peeling generation unit 55 in the front-rear direction.
[0021]
In the vehicular lamp device 5 configured as described above, when the traveling wind received on the front surface of the vehicle flows to the side surface of the vehicle when the vehicle travels, a turbulent flow is generated in the separation generating unit 55 and formed on the side surface of the vehicle body. By reducing the negative pressure, the yawing moment generated when the vehicle receives a crosswind can be reduced.
[0022]
As described above, in the vehicular lamp device 5 according to the first embodiment, the separation generating portion 55 can be provided at the front end portion of the vehicle body by forming the separation generating portion 55 on the lens 54 of the combination lamp portion. I was able to increase the number of places.
For this reason, in this Embodiment 1, the conventionally well-known peeling production | generation part was able to be improved. That is, as in the first prior art, the bumper shape is formed by projecting the bumper so that the corner is angular, and the bumper is formed with a separation generating portion, and in the bumper lamp mounting hole as in the second prior art. In the first embodiment, the corner portion of the bumper 4 is relatively formed in the fog lamp recess 4d without impairing the design of the corner portion. By combining the structure capable of forming the large peel generating portion 4m and the formation of the peel generating portion 55 on the lens 54, the area for generating the peel can be expanded without deteriorating the overall design, and the crosswind characteristics Was able to improve.
Such a lamp device 5 in recent years has become large in size, and the peeling generation part 55 can be provided in such a large area, so that the crosswind characteristics can be greatly improved.
[0023]
In addition, in the first embodiment, since the peeling generation unit 55 of the lens 54 and the lamp reflecting mirror 58 are overlapped in the front-rear direction, the entire lens 54 is curved when the turn signal lamp 56 is turned on. The light distribution loss due to the inclination is reduced as compared with the case of the surface shape, and the visibility from the front is improved.
[0024]
(Embodiment 2)
Next, a second embodiment of the present invention will be described.
Since the second embodiment is a modification of the first embodiment, only differences from the first embodiment will be described, and the same reference numerals as those in the first embodiment are attached to the configurations common to the first embodiment. The description is omitted.
[0025]
In the second embodiment, as shown in the cross-sectional view of FIG. 7 (S6-S6 cross-sectional view of FIG. 8) and the front view of FIG. 8, a notch 58c is provided in a part of the lamp reflector 58. Yes.
Further, at the rear end portion of the lens 54 having a height at which the cutout portion 58c is provided, a side turn portion 54s protruding in a mountain shape is formed sideways. A jagged prism cut portion 54c is formed on the inner surface of the rear inclined surface 54r that is inclined to face, forming a side turn light distribution portion that continuously forms small triangles and refracts light from the turn signal lamp 56. Yes.
[0026]
Therefore, in the second embodiment, when the turn signal lamp 56 is turned on, the light is forward as shown by the arrow LF in FIG. However, in the cutout portion 58c, it proceeds toward the side turn portion 54s as indicated by an arrow LR in FIG. 7, and further, the rear inclined surface 54r is refracted by the prism cut portion 54c and proceeds 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 provide a side turn signal separately, so that the cost can be reduced.
[0027]
As mentioned above, although embodiment was described with drawing, this invention is not limited to this.
For example, the shape of the peeling generation unit 55 is not limited to that shown in the embodiment, and may be any shape as long as it can form a turbulent flow so that the traveling wind is peeled from the side surface of the vehicle body.
In addition, the peeling generation part is formed in the middle part of the curved surface of the lens, but this middle part is not the center of the curved surface of the lens. However, 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.
Furthermore, although the Example showed the example which formed the peeling production | generation part 55 in the lens 54 which covers the turn signal lamp 56, in the vehicle lamp device, if it is a lens provided in the corner part of a front surface and a side surface Other lamps such as a lens provided in front of a headlight or a vehicle width lamp may be used.
In the embodiment, a one-box car has been described as an example, but a truck or the like may be applied to other types of vehicles as long as the vehicle has a shape in which a front panel and a front shield stand continuously. .
[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 a first embodiment of the present invention is applied.
FIG. 2 is a perspective view showing a vehicle bumper to which the first embodiment is applied.
3 is a cross-sectional view taken along line S3-S3 of FIG.
4 is a plan view showing a main part of the first embodiment. FIG.
5 is a cross-sectional view of the vehicle lamp device according to the first embodiment taken along the line S5-S5 in FIG.
FIG. 6 is a front view of a main part of the vehicular lamp device according to the first embodiment.
7 is a cross-sectional view of the vehicle lamp device according to the second embodiment taken along the line S6-S6 in FIG.
FIG. 8 is a front view of a main part of the vehicular lamp device according to the second embodiment.
FIG. 9 is a cross-sectional view showing a conventional technique.
FIG. 10 is a perspective view and a cross-sectional view showing a conventional technique.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front panel 2 Windshield 3 Vehicle front surface 4 Bumper 4b Base part 4c Turning part 4d Fog lamp recessed part 4f Lamp built-in hole 4s Side face 4m Peeling generation part 5 Vehicle lamp device 51 Head lamp housing 52 Combination lamp housing 53 Lens 54 Lens 54c Prism Cut portion 54s Side turn portion 54r Rear inclined surface 55 Peeling generation portion 56 Turn signal lamp 57 Hot air vent hole 58 Lamp reflector 58c Notch

Claims (3)

In a vehicular lamp device that is disposed at the left and right corner portions of the front portion of the vehicle body and the front and side surfaces of the corner portions are covered with lenses, the surface of the lens is formed in a curved surface shape substantially along the curved surface of the corner portions In addition, the surface of the lens is bent from the curved surface of the lens to the vehicle front-rear direction so as to be orthogonal to the vehicle front-rear direction and extend toward the vehicle side. a surface facing the vehicle front to standing, consists of a surface facing the vehicle side that extends toward the this plane either et bending song rearward, and the curved surface shape of the rear end portion is the lens are adapted to protrude is formed in a planar Misan triangular shape so as to converge, by extending over the projecting portion substantially vertically entire length of the lens, the flow of air flowing along the curved surface of the lens from the side of the vehicle body Peel off Vehicle lamp device, wherein the release generating portion is formed.   2. The vehicle according to claim 1, wherein a lamp and a lamp reflecting mirror are provided behind the lens, and a part of the lamp reflecting mirror is disposed so as to overlap the peeling generation unit in the front-rear direction. Lamp device.   A turn signal lamp is provided as a lamp, and a part of the lamp reflector is provided with a notch for guiding the light of the turn signal lamp to the side surface of the lens, and the light of the turn signal lamp guided through the notch 3. The vehicular lamp device according to claim 2, wherein a side turn portion that leads to the side and the rear side is provided on the side surface of the lens so as to protrude in a mountain shape to the side.

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