WO2019124238A1

WO2019124238A1 - Vehicle lamp

Info

Publication number: WO2019124238A1
Application number: PCT/JP2018/046041
Authority: WO
Inventors: 健堀場; 駿野中
Original assignee: 株式会社小糸製作所
Priority date: 2017-12-19
Filing date: 2018-12-14
Publication date: 2019-06-27
Also published as: CN111433511B; JP6982487B2; JP2019110051A; CN111433511A

Abstract

In a vehicle lamp provided with a reflector that reflects light emitted from a light-emitting element, frontward of the lamp, the present invention suppresses occurrence of uneven light distribution and increases brightness of the light distribution pattern. An additional reflector (56) that reflects light emitted from a light-emitting element (32), toward the vicinity of the light-emitting element (32) is disposed at a position away from the light-emitting element (32), frontward of the lamp. This configuration prevents occurrence of glare and uneven light distribution due to direct light proceeding from the light-emitting element (32) frontward of the lamp. Moreover, a reflection member (34) that reflects reflected light from the additional reflector (56), toward a reflector (52) is disposed at a position, near the light-emitting element (32), that is on the rear side of the lamp. Accordingly, light sequentially reflected by the additional reflector (56), the reflection member (34), and the reflector (52) is added to the reflected light from the reflector (52), and thus the light flux utilization rate of light emitted from the light-emitting element (32) is increased.

Description

Vehicle lamp

The present invention relates to a vehicular lamp provided with a reflector that reflects light emitted from a light emitting element forward of the lamp.

Conventionally, as described in, for example, "patent document 1", as a vehicle lamp, a required light distribution pattern is formed by reflecting light emitted from a light emitting element toward the front of the lamp by a reflector. It is known what was constructed.

JP 2014-229588 A

In such a vehicle lamp, if a shade for shielding direct light from the light emitting element to the front of the lamp is arranged at a position away from the light emitting element to the lamp front side, glare is caused by the direct light. It is possible to prevent the occurrence of light distribution unevenness and the like.

On the other hand, in such a vehicle lamp, it is desirable to make the emitted light from the light emitting element enter the reflector as much as possible in order to form a bright light distribution pattern, but because the brightness of the light distribution pattern is increased. It is desirable that light distribution unevenness does not occur carelessly.

The present invention has been made in view of such circumstances, and in a vehicle lamp provided with a reflector for reflecting light emitted from the light emitting element toward the front of the lamp, the occurrence of light distribution unevenness is suppressed. It is an object of the present invention to provide a vehicular lamp capable of increasing the brightness of a light distribution pattern.

The present invention achieves the above object by providing a configuration in which an additional reflector is disposed at a position away from the light emitting element on the front side of the lamp instead of the shade, and in which a predetermined reflecting member is additionally disposed. It is intended to

That is, the vehicle lamp according to the present invention
A vehicle lamp configured to form a required light distribution pattern by reflecting light emitted from a light emitting element toward the front of the lamp by a reflector,
An additional reflector disposed at a position away from the light emitting element on the front side of the lamp and configured to reflect light emitted from the light emitting element toward the vicinity of the light emitting element;
And a reflecting member disposed in the vicinity of the light emitting element and configured to reflect light reflected from the additional reflector toward the reflector.

The type of the “required light distribution pattern” is not particularly limited, and for example, a low beam light distribution pattern, a high beam light distribution pattern, a fog lamp light distribution pattern, and the like can be adopted.

The specific position of the “near the light emitting element” is not particularly limited, and, for example, the light emitting element near the rear of the lamp or near the side of the light emitting element can be adopted.

If the above-mentioned "reflecting member" is configured to reflect light reflected from the additional reflector toward the reflector, the specific configuration such as the shape and size of the reflecting surface is not particularly limited. .

Although the vehicle lamp according to the present invention is configured to form a required light distribution pattern by reflecting light emitted from the light emitting element toward the front of the lamp by the reflector, the light emitting element is separated from the light emitting element to the front side An additional reflector that reflects the light emitted from the light emitting element toward the vicinity of the light emitting element is disposed at a position where the light reflected from the additional reflector is directed to the reflector in the vicinity of the light emitting element. Since the reflecting member for reflecting light is disposed, the following effects can be obtained.

That is, by disposing the additional reflector at a position away from the light emitting element on the front side of the lamp, it is possible to prevent, in advance, the occurrence of glare and uneven light distribution due to direct light from the light emitting element to the front of the lamp. Can.

In addition, light reflected sequentially by the additional reflector, the reflection member, and the reflector is added to the light reflected by the reflector, so that it is possible to increase the light flux utilization rate for the light emitted from the light emitting element. Thus, the brightness of the light distribution pattern can be increased.

At that time, since the reflecting member is disposed in the vicinity of the light emitting element, it is possible to treat the reflected light from the reflecting member as the emitted light from the pseudo light source disposed in the vicinity of the light emitting element. For this reason, the additional light distribution pattern formed by the light sequentially reflected by the additional reflector, the reflection member and the reflector is divided into the basic light distribution pattern corresponding area (that is, the direct light from the same area of the reflector It can be disposed at a position adjacent to the light distribution pattern formed as a part. And while this suppresses generation | occurrence | production of light distribution nonuniformity, the brightness of the said required light distribution pattern can be increased.

As described above, according to the present invention, in the vehicle lamp provided with the reflector for reflecting light emitted from the light emitting element toward the front of the lamp, the brightness of the light distribution pattern is increased after suppressing the occurrence of the light distribution unevenness. It can be done.

In the above configuration, if the configuration of the reflection member is provided on the substrate supporting the light emitting element, the reflection member can be disposed with high positional accuracy. The reflecting member may be configured as a member different from the substrate supporting the light emitting element, or may be configured as a part of the substrate.

At this time, the land portion is formed on the surface of the substrate, and if the reflection member is formed of metal pieces welded to the land portion, the shape of the reflection surface of the reflection member and the degree of freedom of the arrangement thereof are obtained. It can be enhanced.

In the above configuration, when the light emitting element is disposed with its light emitting surface facing downward, glare and light distribution unevenness caused by direct light from the light emitting element to the front of the lamp become relatively difficult to occur. The degree of freedom of the shape and arrangement of the additional reflector can be enhanced. Furthermore, if the reflection member is disposed on the lamp rear side of the light emitting element, the additional light distribution pattern can be formed on the lower side with respect to the basic light distribution pattern corresponding region, Thus, the required light distribution pattern can be made suitable for a low beam light distribution pattern or the like.

In the case of adopting such a configuration, if a portion of the direct light from the light emitting element is reflected toward the reflector as the configuration of the reflecting member, the second additional light distribution pattern with respect to the additional light distribution pattern Can be formed to further increase the brightness of the required light distribution pattern.

In the above configuration, if a plurality of additional reflectors and reflective members are arranged, additional light distribution patterns can be additionally formed at a plurality of locations adjacent to the basic light distribution pattern corresponding area, whereby the required light distribution is performed. It is possible to increase the shape freedom of the light pattern.

Side sectional view showing a vehicle lamp according to an embodiment of the present invention Detail view of part II of FIG. 1 Bottom view showing the light source unit of the above-mentioned vehicle lamp separately The perspective view which shows the said light source unit seeing from diagonal lower back Details of the essential parts of FIG. 3 The figure which shows the light distribution pattern formed of the irradiation light from the said vehicle lamp transparently A view similar to FIG. 5 showing a first modification of the embodiment A view similar to FIG. 5 showing a second modification of the above embodiment The figure similar to FIG. 6 which shows the effect | action of the said, 1st and 2nd modification. The same figure as FIG. 2 which shows the 3rd modification of the said embodiment The same figure as FIG. 2 which shows the 4th modification of the said embodiment The figure similar to FIG. 2 which shows the 5th modification of the said embodiment The figure similar to FIG. 6 which shows an effect | action of the said 5th modification.

Hereinafter, embodiments of the present invention will be described using the drawings.

FIG. 1 is a side sectional view showing a vehicular lamp 10 according to an embodiment of the present invention.

As shown in FIG. 1, the vehicular lamp 10 according to the present embodiment includes a lamp chamber formed by a lamp body 12 and a transparent cover 14 in a through-hole shape attached to the front end opening of the lamp body 12. The lamp unit 20 is incorporated.

The lamp unit 20 includes a light emitting element 32 and a reflector 52 for reflecting light emitted from the light emitting element 32 toward the front of the lamp.

FIG. 2 is a detailed view of a portion II of FIG. Further, FIG. 3 is a bottom view showing the light source unit 30 including the light emitting element 32 as a single unit, and FIG. 4 is a perspective view showing the light source unit 30 as viewed obliquely from the lower rear.

In these figures, the direction indicated by X is "forward" (also "forward" as a vehicle) as a lamp, the direction indicated by Y is "rightward", and the direction indicated by Z is "upward". .

As shown in these figures, the light source unit 30 includes a light emitting element 32, a reflecting member 34 disposed in the vicinity of the rear of the lamp of the light emitting element 32, and a substrate 36 for supporting these. Are arranged extending along the horizontal plane.

The light emitting element 32 is a white light emitting diode, and has a light emitting surface 32 a having a horizontally long rectangular shape.

The light emitting element 32 is mounted on the lower surface 36 a of the substrate 36 in a state where the light emitting surface 32 a is directed downward.

A conductive pattern 38 electrically connected to the light emitting element 32 is formed on the lower surface 36 a of the substrate 36. In addition, a connector 40 for electrically connecting the conductive pattern 38 to a feeding cord (not shown) is mounted on the rear end of the lower surface 36 a of the substrate 36.

A heat sink 60 extending along a horizontal surface is disposed on the upper surface side of the substrate 36. The substrate 36 is fixed to and supported by the heat sink 60. This fixed support is performed by screwing in the

screw insertion holes

36c and 36d formed in the left and right two places of the rear portion in a state of being positioned in the recessed portions 36b formed in the left and right side surfaces of the substrate 36 .

The reflector 52 is disposed below the light source unit 30.

The reflecting surface 52a of the reflector 52 is constituted by a plurality of reflecting elements 52s formed in a vertical and horizontal grid arrangement. Each reflection element 52s is a paraboloid of revolution having an emission center of the light emitting element 32 (that is, the center position of the emission surface 32a) as a focal point and an axis extending in the longitudinal direction of the lamp passing through the emission center A as a central axis It is formed in the concave curve shape by using the surface as a reference surface.

The reflector 52 is formed such that its upper end edge extends to a position on the lamp rear side of the light emitting element 32 and the reflection member 34 in the light source unit 30 and on the lamp front side of the connector 40 close to the lower surface 36 a of the substrate 36 It is done.

And in this reflector 52, the light from the light emitting element 32 is diffusely reflected and / or deflected and reflected by each of the reflecting elements 52s constituting the reflecting surface 52a.

As shown in FIG. 1, the reflector 52 is configured as a part of a resin-made reflector unit 50 formed as an injection-molded article.

The reflector unit 50 includes an upper wall portion 54 disposed on the lamp front side of the light emitting element 32. The upper wall portion 54 is formed to extend along the horizontal plane at substantially the same height position as the upper end portion of the reflector 52. A positioning pin 54a protruding upward is formed on the upper surface of the upper wall portion 54, and an annular protrusion 54b is formed around the positioning pin 54a, and further on the rear side of the lamp than the annular protrusion 54b Low projections 54c are formed.

On the other hand, in the heat sink 60, a pin insertion hole 60a penetrating the heat sink 60 in the vertical direction is formed at a position corresponding to the positioning pin 54a.

Then, the reflector unit 50 is inserted into the pin insertion hole 60a from below with the positioning pin 54a, and the annular projection 54b is abutted against the lower surface of the heat sink 60 by screwing etc. It is fixed at 60. At this time, the projection 54 c of the upper wall 54 abuts on the lower surface 36 a of the substrate 36.

The rear end portion of the upper wall portion 54 of the reflector unit 50 is configured as an additional reflector 56.

The additional reflector 56 is configured to reflect light emitted from the light emitting element 32 toward the rear of the light emitting element 32 at a position away from the light emitting element 32 toward the front of the lamp.

As shown in FIGS. 2 to 4, lands 42 are formed on the portion of the lower surface 36 a of the substrate 36 located on the lamp rear side of the light emitting element 32. The land portion 42 has a laterally long rectangular outer shape which is slightly larger than the light emitting element 32.

The land portion 42 is formed of a metal foil printed on the lower surface 36 a of the substrate 36 together with the conductive pattern 38. The conductive pattern 38 is formed to bypass the land portion 42.

The reflecting member 34 is formed of a metal piece welded to the land portion 42 by soldering or the like.

The reflection member 34 is formed by bending a stainless steel plate. At this time, the reflecting member 34 is formed to extend in a planar manner obliquely downward and forward from the front end edge of the upper end horizontal portion welded to the land portion 42 and then formed in a planar manner extending obliquely upward and forward. ing.

Then, in the reflecting member 34, the lower surface of the portion extending obliquely upward to the front constitutes a reflecting surface 34a that regularly reflects the light from the light emitting element 32 reflected by the additional reflector 56 toward the reflector 52. There is. The reflecting surface 34a has an outer shape substantially the same size as the light emitting surface 32a of the light emitting element 32, and the inclination angle with respect to the horizontal plane is set to a value of about 10 to 30 ° (eg, 20 °).

At this time, the reflection member 34 is formed such that the front end edge of the reflection surface 34a is at substantially the same height position as the light emission surface 32a of the light emitting element 32, and the front end edge is behind the light emission surface 32a. It is formed to be close to the end edge (specifically, the gap in the front-rear direction of the lamp has a value equal to or less than 1⁄5 of the front-rear width of the light emitting surface 32 a).

FIG. 5 is a detailed view of the main part of FIG.

As also shown in FIG. 5, the reflecting surface 56a of the additional reflector 56 has a light emitting center A of the light emitting element 32 as a first focal point and a central position B of the reflecting surface 34a of the reflecting member 34 as a second focal point. It is composed of faces. Thus, the additional reflector 56 reflects the light from the light emitting element 32 that has reached the reflecting surface 56 a toward the reflecting surface 34 a of the reflecting member 34. Thus, the reflecting surface 34 a of the reflecting member 34 functions as a pseudo light source at a position adjacent to the lamp rear side of the light emitting surface 32 a of the light emitting element 32.

Since the reflection surface 34a of the reflection member 34 is thus disposed at a position adjacent to the rear side of the lamp of the light emission surface 32a of the light emitting element 32, as shown in FIG. The light from the light emitting element 32 which is reflected and enters the reflector 52 has a direction of the reflected light from the reflector 52 directed somewhat downward to the light from the light emitting element 32 which is directly incident on the same point of the reflecting surface 52 a of the reflector 52 It becomes.

The reflecting member 34 is also configured to reflect a portion of the direct light from the light emitting element 32 toward the reflector 52.

That is, as shown in FIG. 2, the reflecting surface 34 a of the reflecting member 34 extends diagonally downward and rearward from a height position substantially the same as the rear end edge of the light emitting surface 32 a of the light emitting element 32. A part of the light emitted from the lamp towards the rear of the lamp directly enters this reflection surface 34a. The light directly incident on the reflecting surface 34a is specularly reflected toward the upper region of the reflecting surface 52a of the reflector 52 at the reflecting surface 34a, and is reflected by the upper region of the reflecting surface 52a. It passes through the lower vicinity and is irradiated toward the front of the lamp.

As described above, the light from the light emitting element 32 which is directly incident on the reflecting member 34 and reflected by the reflecting member 34 and then is incident on the reflector 52 is also directly incident on the same point of the reflecting surface 52 a of the reflector 52 from the light emitting element 32. The direction of the reflected light from the reflector 52 is slightly downward with respect to the light.

FIG. 6 is a perspective view showing a light distribution pattern formed on a virtual vertical screen disposed at a position 25 m in front of the vehicle by the irradiation light from the vehicular lamp 10.

This light distribution pattern is a low beam light distribution pattern PL-1 and is formed as a left light distribution light beam distribution pattern having cutoff lines CL1 and CL2 at the upper end edge.

In the cut-off lines CL1 and CL2, the opposite lane side portion on the right side of the V-V line passing in the vertical direction through the HV, which is the vanishing point in the front direction of the lamp, is formed as the horizontal cut-off line CL1 A portion is formed as an oblique cut-off line CL2 extending obliquely upward.

In the low beam light distribution pattern PL-1, an elbow point E which is an intersection point of the horizontal cutoff line CL1 and the oblique cutoff line CL2 is located about 0.5 to 0.6 degrees below H-V. In the low beam light distribution pattern PL-1, a horizontally long region surrounding the elbow point E slightly to the left is formed as the high light intensity region HZ.

The low beam light distribution pattern PL-1 is formed as a combined light distribution pattern of the basic light distribution pattern PL0 and the two additional light distribution patterns PLA and PLB.

The basic light distribution pattern PL0 is a light distribution pattern formed by light which is emitted from the light emitting element 32 and directly enters the reflection surface 52a of the reflector 52 and is reflected by the reflection surface 52a toward the front of the lamp. By this basic light distribution pattern PL0, main parts of the low beam light distribution pattern PL-1 such as the cutoff lines CL1 and CL2 and the high light intensity region HZ are formed.

The additional light distribution pattern PLA is a light distribution pattern formed by light sequentially reflected by the additional reflector 56, the reflection member 34 and the reflector 52 after being emitted from the light emitting element 32.

The additional light distribution pattern PLA is formed as a horizontally long light distribution pattern extending in the left-right direction with the VV line at the lower region of the low beam light distribution pattern PL-1.

The additional light distribution pattern PLA is formed at a position adjacent to the lower side of the basic light distribution pattern corresponding area PLAO 2 as a light distribution pattern having substantially the same shape as this.

Here, the basic light distribution pattern corresponding area PLAO is when direct light from the light emitting element 32 is incident on an area where light sequentially reflected by the additional reflector 56 and the reflecting member 34 is incident on the reflecting surface 52 a of the reflector 52. It means a light distribution pattern formed as a part of the basic light distribution pattern PL0. The same applies to the following.

On the other hand, the additional light distribution pattern PLB is a light distribution pattern formed by the light sequentially reflected by the reflecting member 34 and the reflector 52 after being emitted from the light emitting element 32.

The additional light distribution pattern PLB is formed as a laterally long light distribution pattern extending in the left-right direction with the VV line at the upper side of the additional light distribution pattern PLA.

The additional light distribution pattern PLB is also formed as a light distribution pattern having substantially the same shape as the additional light distribution pattern PLB at a position adjacent to the lower side of the basic light distribution pattern corresponding area PLB-o.

The additional light distribution patterns PLA and PLB are formed in substantially the same shape adjacent to the lower sides of the basic light distribution pattern corresponding areas PLAо and PLBо, because the reflection surface 34 a of the reflection member 34 emits light. It is because it is formed in the position substantially adjacent to the lamp back side of the surface 32a by the same size as this.

Further, the additional light distribution pattern PLB and its basic light distribution pattern corresponding region PLBо are formed as a light distribution pattern whose upper and lower width is narrower than the additional light distribution pattern PLA and its basic light distribution pattern corresponding region PLAo. This is because when the reflective surface 34a of the reflective member 34 and the light emitting surface 32a of the light emitting element 32 are viewed from the upper region of the reflective surface 52a of the reflector 52, the angle of view of the front and rear width thereof becomes small.

Next, the operation and effect of the present embodiment will be described.

The vehicular lamp 10 according to the present embodiment is configured to form a low beam light distribution pattern PL-1 (required light distribution pattern) by causing the reflector 52 to reflect light emitted from the light emitting element 32 toward the front of the lamp. However, at a position away from the light emitting element 32 toward the front of the lamp, an additional reflector 56 for reflecting the light emitted from the light emitting element 32 toward the rear of the light emitting element 32 is disposed. Further, since the reflecting member 34 for reflecting the reflected light from the additional reflector 56 toward the reflector 52 is disposed in the vicinity of the rear of the lamp of the light emitting element 32, the following effects can be obtained.

That is, by disposing the additional reflector 56 at a position away from the light emitting element 32 on the front side of the lamp, it is possible to prevent glare and light distribution unevenness by direct light from the light emitting element 32 to the front of the lamp. It can be prevented.

Then, the light sequentially reflected by the additional reflector 56, the reflecting member 34 and the reflector 52 is added to the reflected light from the reflector 52, so that the luminous flux utilization factor for the light emitted from the light emitting element 32 can be increased. it can. Thus, the brightness of the low beam light distribution pattern PL-1 can be increased.

At that time, since the reflecting member 34 is disposed in the vicinity of the rear of the lamp of the light emitting element 32, the reflected light from the reflecting member 34 is used as the emitted light from the pseudo light source disposed in the vicinity of the rear of the lamp of the luminous element 32. It becomes possible to handle. Therefore, the additional light distribution pattern PLA formed by the light sequentially reflected by the additional reflector 56, the reflecting member 34, and the reflector 52 is formed by the direct reflection light from the same region of the reflector 52 to a basic light distribution pattern corresponding area PLAo. It can be arranged at the lower position adjacent to. As a result, it is possible to increase the brightness of the low beam light distribution pattern PL-1 while suppressing the occurrence of light distribution unevenness.

As described above, according to the present embodiment, in the vehicle lamp 10 provided with the reflector 52 that reflects the light emitted from the light emitting element 32 toward the front of the lamp, the light distribution of the low beam is suppressed after the generation of the light distribution unevenness is suppressed. The brightness of the pattern PL-1 can be increased.

At this time, in the present embodiment, since the reflective member 34 is provided on the substrate 34 that supports the light emitting element 32, the reflective member 34 can be disposed with high positional accuracy.

Moreover, since the reflecting member 34 is formed of a metal piece welded to the land portion 42 formed on the lower surface 34 a of the substrate 34, the shape of the reflecting surface 34 a of the reflecting member 34 and the freedom of its arrangement are enhanced. be able to.

In the present embodiment, since the light emitting element 32 is disposed with the light emitting surface 32 a facing downward, glare and light distribution unevenness caused by direct light from the light emitting element 32 to the front of the lamp are relatively hard to occur. Therefore, the degree of freedom of the shape and arrangement of the additional reflector 56 can be enhanced.

Furthermore, in the present embodiment, since the reflective member 34 is disposed on the lamp rear side of the light emitting element 32, the additional light distribution pattern PLA is formed on the lower side with respect to the basic light distribution pattern corresponding area PLAo. Thus, the low beam light distribution pattern PL-1 can be formed as a light distribution pattern having clear cut-off lines CL1 and CL2 at the upper end edge.

Further, in the present embodiment, the reflecting member 34 is configured to reflect part of the direct light from the light emitting element 32 toward the reflector 52, so the second additional distribution to the additional light distribution pattern PLA The light pattern PLB can be additionally formed, which can further increase the brightness of the low beam light distribution pattern PL-1.

Furthermore, in the present embodiment, since the additional reflector 56 is integrally formed with the reflector 52 as the reflector unit 50, the positional relationship accuracy between the both can be enhanced.

In the above embodiment, although the reflecting member 34 is described as being formed by bending a stainless steel plate, the reflecting member 34 is formed by bending a steel plate subjected to mirror processing such as plating. Configuration is also possible.

Although the vehicle lamp 10 according to the above embodiment is configured to form the low beam light distribution pattern PL-1 by the irradiation light from the single lamp unit 20, the low beam is generated by the irradiation lights from a plurality of lamp units. It is also possible to form a light distribution pattern PL-1 for light distribution, in which case light distribution patterns similar to the additional light distribution patterns PLA and PLB are formed by the irradiation light from a part or all of the lamp units. It is possible to constitute.

Next, modifications of the above embodiment will be described.

First, a first modification of the above embodiment will be described.

FIG. 7 is a view similar to FIG. 5 showing the main part of the vehicle lamp according to the present modification.

As shown in FIG. 7, the basic configuration of this modification is the same as that of the above embodiment, but the configurations of the additional reflector 156 and the reflecting member 134 are different from those of the above embodiment.

That is, in this modification, the additional reflector 156 has a pair of left and right reflecting surfaces 156aL and 156aR, and the reflecting member 134 has a pair of left and right reflecting surfaces 134aL and 134aR.

The pair of left and right reflecting surfaces 156aL and 156aR in the additional reflector 156 are formed in a symmetrical positional relationship with respect to an axis extending in the front-rear direction of the lamp so as to pass through the light emission center A of the light emitting element 32.

Further, the pair of left and right reflecting surfaces 134aL and 134aR in the reflecting member 134 are also formed in a symmetrical positional relationship with respect to the axis, and a slit 134b is formed between the two. At this time, the reflecting surfaces 134aL and 134aR are formed at the same inclination angle as that of the reflecting surface 34a with a horizontal width slightly narrower than the reflecting surface 34a of the reflecting member 34 of the embodiment.

The left reflecting surface 156aL of the additional reflector 156 is formed of an ellipsoid of revolution having the light emission center A of the light emitting element 32 as the first focus and the center position BR of the right reflecting surface 134aR of the reflecting member 134 as the second focus. The right reflecting surface 156aR of the additional reflector 156 has a light emitting center A of the light emitting element 32 as a first focal point and the center position BL of the left reflecting surface 134aL of the reflecting member 134 as a second focal point. It consists of

Thereby, the light sequentially reflected by the reflecting surface 156aL on the left side in the additional reflector 156 and the reflecting surface 134aR on the right side in the reflecting member 134 is incident on the reflecting surface 52a of the reflector 52 in the area on the right than in the above embodiment. The light reflected from the reflection surface 52a is emitted toward the right as compared with the case of the above embodiment.

Similarly, light sequentially reflected by the reflecting surface 156aR on the right side of the additional reflector 156 and the reflecting surface 134aL on the left side of the reflecting member 134 is incident on the reflecting surface 52a of the reflector 52 in the left side than in the above embodiment. The light reflected from the reflection surface 52a is emitted toward the left as compared with the case of the above embodiment.

On the other hand, the direct light from the light emitting element 32 incident on each of the reflecting surfaces 134aL and 134aR of the reflecting member 134 is irradiated from the reflector 52 toward the front of the lamp through the same light path as in the above embodiment. There is.

FIG. 9A is a view similar to FIG. 6 showing a low beam light distribution pattern PL-2 formed by irradiation light from the vehicle lamp according to the present modification.

The low beam light distribution pattern PL-2 is formed as a composite light distribution pattern of the basic light distribution pattern PL0, the left and right pair of additional light distribution patterns PLC1 and PLC2, and the left and right pair of additional light distribution patterns PLD1 and PLD2. There is.

The right additional light distribution pattern PLC1 is a light distribution pattern formed by light sequentially reflected by the left reflecting surface 156aL of the additional reflector 156, the right reflecting surface 134aR of the reflecting member 134, and the reflecting surface 52a of the reflector 52. The additional light distribution pattern PLC1 is formed as a laterally long light distribution pattern having a smaller left / right diffusion angle than the additional light distribution pattern PLA of the above embodiment on the right side of the VV line.

Similarly, the left additional light distribution pattern PLC2 is a light distribution pattern formed by light sequentially reflected by the right reflecting surface 156aR of the additional reflector 156, the left reflecting surface 134aL of the reflecting member 134, and the reflecting surface 52a of the reflector 52. It is. The additional light distribution pattern PLC2 is formed as a laterally long light distribution pattern having a smaller left / right diffusion angle than the additional light distribution pattern PLA of the above embodiment on the left side of the VV line.

The pair of left and right additional light distribution patterns PLC1 and PLC2 are formed as light distribution patterns having substantially the same shape as the light distribution patterns adjacent to the lower side of the basic light distribution pattern corresponding areas PLC1о and PLC2о, respectively.

On the other hand, the additional light distribution pattern PLD1 on the right side is a light distribution pattern formed by light sequentially reflected by the reflection surface 134aR on the right side of the reflection member 134 and the reflection surface 52a of the reflector 52. The additional light distribution pattern PLD1 is formed as a light distribution pattern substantially the same as the right half of the additional light distribution pattern PLA of the above embodiment.

Similarly, the left additional light distribution pattern PLD2 is a light distribution pattern formed by light sequentially reflected by the left reflecting surface 134aL of the reflecting member 134 and the reflecting surface 52a of the reflector 52. The additional light distribution pattern PLD2 is formed as a light distribution pattern substantially the same as the left half of the additional light distribution pattern PLA of the above embodiment.

The pair of left and right additional light distribution patterns PLD1 and PLD2 are formed as light distribution patterns having substantially the same shape as the light distribution patterns adjacent to the lower side of the basic light distribution pattern corresponding areas PLD1о and PLD2о, respectively.

Even when the configuration of this modification is adopted, the brightness of the low beam light distribution pattern PL-2 can be increased while suppressing the occurrence of the light distribution unevenness.

When the configuration of this modification is adopted, the brightness of the regions located on the left and right sides of the VV line at the lower end portion of the low beam light distribution pattern PL-2 can be increased.

In the first modification, the additional reflector 156 has a pair of left and right reflecting surfaces 156aL and 156aR, and the reflecting member 134 has a pair of left and right reflecting surfaces 134aL and 134aR. However, it is also possible to constitute as an additional reflector independent for each of the reflecting surfaces 156aL and 156aR, and also to constitute as an independent reflecting member for each of the reflecting surfaces 134aL and 134aR.

Next, a second modification of the above embodiment will be described.

FIG. 8 is a view similar to FIG. 5 showing the main part of the vehicle lamp according to the present modification.

As shown in FIG. 8, the basic configuration of this modification is the same as that of the first modification, but the configuration of the reflecting member 234 is different from that of the first modification.

That is, the reflection member 234 of this modification also has a pair of left and right reflection surfaces 234aL and 234aR formed in a symmetrical positional relationship with each other, and the slits 234b are formed between the two, but each reflection The inclination angles of the surfaces 234aL and 234aR are different from those in the first modification example.

Specifically, the left reflecting surface 234aL is inclined to the left, and the right reflecting surface 234aR is inclined to the right. However, the inclination angles of the reflecting surfaces 234aL and 234aR in the front-rear direction of the lamp are set to the same values as in the case of the reflecting surfaces 134aL and 134aR in the reflecting member 134 of the first modification.

Thereby, the light sequentially reflected by the reflecting surface 156aL on the left side in the additional reflector 156 and the reflecting surface 234aR on the right side in the reflecting member 234 is further to the right with respect to the reflecting surface 52a of the reflector 52 than in the first modification. The light is made to enter the region, and the reflected light from the reflection surface 52a is irradiated to the direction further to the right than in the case of the first modification.

Similarly, the light sequentially reflected by the reflecting surface 156aR on the right side in the additional reflector 156 and the reflecting surface 234aL on the left side in the reflecting member 234 is further left to the reflecting surface 52a of the reflector 52 than in the case of the first modification. The light is made incident on the region and made incident on the left side region of the reflecting surface 52a of the reflector 52 more than in the case of the first modification, and the reflected light from the reflecting surface 52a is directed further to the left than in the case of the first modification. It is supposed to be irradiated towards.

On the other hand, in the present modification, also with respect to the direct light from the light emitting element 32 incident on each of the reflecting surfaces 234aL and 234aR of the reflecting member 234, the reflected light at the reflecting surface 234aL on the left is against the reflecting surface 52a of the reflector 52. The incident light is made incident on the left side of the first modification, and the light reflected by the right reflection surface 234aR is on the right of the reflection 52a of the reflector 52 in the first modification. It is supposed to be incident.

FIG. 9B is a view similar to FIG. 6 showing a low beam light distribution pattern PL-3 formed by irradiation light from the vehicle lamp according to the present modification.

The low beam light distribution pattern PL-3 is formed as a composite light distribution pattern of the basic light distribution pattern PL0, the left and right pair of additional light distribution patterns PLE1 and PLE2, and the left and right pair of additional light distribution patterns PLF1 and PLF2 There is.

The right additional light distribution pattern PLE1 is a light distribution pattern formed by light sequentially reflected by the left reflecting surface 156aL of the additional reflector 156, the right reflecting surface 234aR of the reflecting member 234, and the reflecting surface 52a of the reflector 52. The additional light distribution pattern PLE1 is formed as a laterally long light distribution pattern having substantially the same right and left diffusion angle as the additional light distribution pattern PLC1 on the further right side than the additional light distribution pattern PLC1 of the first modification.

Similarly, the left additional light distribution pattern PLE2 is a light distribution pattern formed by light sequentially reflected by the right reflecting surface 156aR of the additional reflector 156, the left reflecting surface 234aL of the reflecting member 234, and the reflecting surface 52a of the reflector 52. It is. The additional light distribution pattern PLE2 is formed as a laterally long light distribution pattern having substantially the same left and right diffusion angle as the additional light distribution pattern PLC2 on the left side of the additional light distribution pattern PLC1 of the first modification.

The pair of left and right additional light distribution patterns PLE1 and PLE2 are formed as light distribution patterns having substantially the same shape as the light distribution patterns adjacent to the lower side of the basic light distribution pattern corresponding regions PLE1 and PLE2 respectively.

On the other hand, the additional light distribution pattern PLF1 on the right side is a light distribution pattern formed by light sequentially reflected by the reflection surface 234aR on the right side of the reflection member 234 and the reflection surface 52a of the reflector 52. The additional light distribution pattern PLF1 is formed as a laterally long light distribution pattern having substantially the same right and left diffusion angle as the additional light distribution pattern PLD1 on the right side of the additional light distribution pattern PLD1 of the first modification.

Similarly, the left additional light distribution pattern PLF2 is a light distribution pattern formed by light sequentially reflected by the left reflecting surface 234aL of the reflecting member 234 and the reflecting surface 52a of the reflector 52. The additional light distribution pattern PLF2 is formed as a laterally long light distribution pattern having substantially the same right and left diffusion angle as the additional light distribution pattern PLD2 on the left side of the additional light distribution pattern PLD2 of the first modification.

The pair of left and right additional light distribution patterns PLF1 and PLF2 are formed as light distribution patterns having substantially the same shape as the light distribution patterns adjacent to the lower side of the basic light distribution pattern corresponding areas PLF1о and PLF2о, respectively.

Even when the configuration of the present modification is adopted, it is possible to increase the brightness of the low beam light distribution pattern PL-3 while suppressing the occurrence of the light distribution unevenness.

When the configuration of this modification is adopted, the brightness of the region near the left and right end portions in the lower end portion of the low beam light distribution pattern PL-3 can be increased.

Next, a third modification of the above embodiment will be described.

FIG. 10 is a view similar to FIG. 2 showing the main part of the vehicle lamp according to the present modification.

As shown in FIG. 10, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the reflection member 334 is different from that of the above embodiment, and accordingly the substrate 336 and the substrate 336 The configuration of the heat sink 360 is also partially different from that of the above embodiment.

That is, the reflection member 334 of this modification is constituted by a projection which protrudes downward from the lower surface of the heat sink 360, and the reflection surface 334a is formed by mirror-finishing the tip end surface of this projection. . This mirror finish can be performed by surface treatment such as aluminum deposition or polishing.

The reflecting surface 334a of the reflecting member 334 is disposed at substantially the same position as the reflecting surface 34a of the reflecting member 34 in the above embodiment, and is formed with an outer shape and an inclination angle substantially the same as the reflecting surface 34a. ing.

An insertion hole 336 e for inserting the reflection member 334 (that is, the protrusion of the heat sink 360) is formed in the substrate 336 of the present modification.

Also in the present modification, the conductive pattern 338 is formed on the lower surface 336a of the substrate 336, and the light emitting element 32 and the connector 40 are mounted, but the component corresponding to the land portion 42 in the above embodiment is not exist.

Even when the configuration of the present modification is adopted, it is possible to form the low beam light distribution pattern similar to the low beam light distribution pattern PL-1 while suppressing the occurrence of the light distribution unevenness, and the brightness thereof is increased. It can be done.

Further, in the case of adopting the configuration of the present modification, since the reflective member 334 is integrally formed with the heat sink 360, the number of parts can be reduced.

Next, a fourth modification of the above embodiment will be described.

FIG. 11 is a view similar to FIG. 2 showing the main part of the vehicle lamp according to the present modification.

As shown in FIG. 11, the basic configuration of this modified example is the same as that of the above embodiment, but the substrate 436 is disposed upside down, and accordingly, the reflector 452 and the additional reflector 456 are arranged. Also in the state of being turned upside down.

That is, in the present modification, the light emitting element 32 is mounted on the upper surface 436 a of the substrate 436 in a state where the light emitting surface 32 a is directed right above. In addition, the reflecting member 434 of the present modified example is disposed in the vicinity of the front of the lamp of the light emitting element 32.

A conductive pattern 438 and land portions 442 are formed on the upper surface 436a of the substrate 436, but the arrangement is different from that of the above embodiment.

The reflecting member 434 is formed of a metal piece welded to the land portion 442. The reflection surface 434a of the reflection member 434 has an outer shape substantially the same as that of the reflection surface 34a of the reflection member 34 in the above embodiment, and is formed to extend in a planar manner obliquely upward and backward, and the rear edge is It is located near the front end edge of the light emitting surface 32 a of the light emitting element 32.

The reflecting surface 456a of the additional reflector 456 is formed by an ellipsoid of revolution having the light emission center A of the light emitting element 32 as the first focus and the center position B of the reflecting surface 434a of the reflecting member 434 as the second focus. Thus, the additional reflector 456 reflects the light from the light emitting element 32 that has reached the reflecting surface 456a toward the reflecting surface 434a of the reflecting member 434. Thus, the reflecting surface 434 a of the reflecting member 434 functions as a pseudo light source at a position adjacent to the lamp front side of the light emitting surface 32 a of the light emitting element 32.

Thus, the reflecting surface 434a of the reflecting member 434 is disposed at a position adjacent to the lamp front side of the light emitting surface 32a of the light emitting element 32, whereby the additional reflector 456 and the reflecting member 434 sequentially reflect and enter the reflector 452 With respect to the light from the light emitting element 32, the direction of the reflected light from the reflector 452 is somewhat downward with respect to the light from the light emitting element 32 directly incident on the same point of the reflecting surface 452a of the reflector 452.

Even when the configuration of this modification is adopted, it is possible to form a low beam light distribution pattern substantially similar to the low beam light distribution pattern PL-1 of the above embodiment while suppressing the occurrence of light distribution unevenness. The brightness can be increased.

Next, a fifth modification of the above embodiment will be described.

FIG. 12 is a view similar to FIG. 2 showing the main part of the vehicle lamp according to the present modification.

As shown in FIG. 12, the basic configuration of this modification is the same as that of the above embodiment, but the vehicle lamp according to this modification is configured as a lamp for forming a high beam light distribution pattern. It is done.

Therefore, in the present modification, the reflecting member 534 is disposed in the vicinity of the front of the lamp of the light emitting element 32, and the configuration of the reflector 552 and the additional reflector 556 is different from that of the above embodiment.

Also in the present modification, the conductive pattern 538 and the land portion 542 are formed on the lower surface 36a of the substrate 36, but the arrangement thereof is different from that of the above embodiment.

The reflecting member 534 is formed of a metal piece welded to the land portion 542. The reflection surface 534a of the reflection member 534 has an outer shape substantially the same as that of the reflection surface 34a of the reflection member 34 in the above embodiment, and is formed to extend in a planar manner toward the lower back diagonally. It is located near the front end edge of the light emitting surface 32 a of the light emitting element 32.

The reflecting surface 556a of the additional reflector 556 is an ellipsoid of revolution having the light emission center A of the light emitting element 32 as the first focal point and the central position B of the reflecting surface 534a of the reflecting member 534 as the second focal point. Thus, the additional reflector 556 reflects the light from the light emitting element 32 that has reached the reflecting surface 556a toward the reflecting surface 534a of the reflecting member 534. Thus, the reflecting surface 534a of the reflecting member 534 functions as a pseudo light source at a position adjacent to the lamp front side of the light emitting surface 32a of the light emitting element 32.

Thus, the reflecting surface 534a of the reflecting member 534 is disposed at a position adjacent to the lamp front side of the light emitting surface 32a of the light emitting element 32, whereby the additional reflector 556 and the reflecting member 534 sequentially reflect and enter the reflector 552 With respect to the light from the light emitting element 32, the direction of the reflected light from the reflector 552 is slightly upward with respect to the light from the light emitting element 32 directly incident on the same point of the reflecting surface 552a of the reflector 552.

FIG. 13 is a view similar to FIG. 6 showing a high beam light distribution pattern PH formed by irradiation light from the vehicle lamp according to the present modification.

The high beam light distribution pattern PH is formed as a laterally long light distribution pattern that diffuses in the left and right direction with respect to H-V, and a high light intensity region HZ is formed at the center position.

The high beam light distribution pattern PH is formed as a combined light distribution pattern of the basic light distribution pattern PH0 and the additional light distribution pattern PHA.

The basic light distribution pattern PH0 is a light distribution pattern formed by light which is emitted from the light emitting element 32 and directly enters the reflecting surface 552a of the reflector 552 and is reflected by the reflecting surface 552a toward the front of the lamp , And constitutes the main part of the high beam light distribution pattern PH.

The additional light distribution pattern PHA is a light distribution pattern formed by light sequentially reflected by the reflective surface 556a of the additional reflector 556, the reflective surface 534a of the reflective member 534, and the reflective surface 552a of the reflector 552.

The additional light distribution pattern PHA is formed as a laterally long light distribution pattern which spreads in the left and right direction above the HV.

The additional light distribution pattern PHA is formed at a position adjacent to the upper side of the basic light distribution pattern corresponding area PHAo as a light distribution pattern having substantially the same shape as this. This is because the reflecting surface 534a of the reflecting member 534 is formed in substantially the same size as the light emitting surface 32a of the light emitting element 32 at a position adjacent to the lamp front side.

When the configuration of the present modification is adopted, it is possible to increase the brightness of the high beam light distribution pattern PH while suppressing the occurrence of the light distribution unevenness.

The numerical values shown as specifications in the above-described embodiment and the modifications thereof are merely examples, and it goes without saying that these may be appropriately set to different values.

Furthermore, the present invention is not limited to the configurations described in the above-described embodiment and the modifications thereof, and configurations in which various modifications other than this are added may be employed.

This international application claims priority based on Japanese Patent Application No. 2017-242908 filed Dec. 19, 2017, and the Japanese Patent Application No. 2017-242908. The entire content of the patent is incorporated by reference in the present international application.

The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration. They are not intended to be exhaustive or to limit the invention to the precise form described. It will be obvious to those skilled in the art that numerous variations and modifications are possible in light of the above description.

DESCRIPTION OF SYMBOLS 10 Vehicle lamp 12 Lamp body 14 Translucent cover 20 Lamp unit 30 Light source unit 32 Light emitting element 32a

Light emitting surface

34, 134, 234, 334, 434, 534 Reflecting

member

34a, 52a, 56a, 134aL, 134aR, 156aL, 156aR, 234aL, 234aR, 334a, 434a, 452a, 456a, 534a, 552a, 556a

reflective surface

36, 336, 436

substrate

36a, 336a lower surface (surface)

36b Recess

36c, 36d

Screw insertion hole

38, 338, 438, 538 Conductive pattern 40

Connector

42, 442, 542 Land 50

Reflector unit

52, 452, 552 Reflector 52s Reflective element 54 Upper wall

54a Positioning pin

54b Ring

projection 54c Protrusions

56, 156, 456, 556

Additional reflector

60, 360 Heat sink 60a

Pin insertion hole

134b, 234b Slit 336e Insertion hole 436a Upper surface (surface)
A Light emission center B, BL, BR Center position of reflective surface of reflective member CL1 Horizontal cut-off line CL2 Diagonal cut-off line E Elbow point HZ High light intensity area PH High light distribution pattern (required light distribution pattern)
Light distribution pattern for PL-1, PL-2 and PL-3 low beam (required light distribution pattern)
PH0, PL0 Basic light distribution pattern PHA, PLA, PLB, PLC1, PLD1, PLD2, PLE1, PLE2, PLF1, PLF2 Additional light distribution pattern PHAо, PLAо, PLBо, PLC1о, PLC2о, PLD1о, PLD2о, PLE1о, PLE2о, PLF1о, PLF2о Basic light distribution pattern corresponding area

Claims

A vehicle lamp configured to form a required light distribution pattern by reflecting light emitted from a light emitting element toward the front of the lamp by a reflector,
An additional reflector disposed at a position away from the light emitting element on the front side of the lamp and configured to reflect light emitted from the light emitting element toward the vicinity of the light emitting element;
A vehicle lamp comprising: a reflecting member disposed in the vicinity of the light emitting element and configured to reflect light reflected from the additional reflector toward the reflector.
The vehicle lamp according to claim 1, wherein the reflection member is provided on a substrate supporting the light emitting element.
Lands are formed on the surface of the substrate,
The vehicular lamp according to claim 2, wherein the reflection member is formed of a metal piece welded to the land portion.
The light emitting element is disposed with the light emitting surface of the light emitting element facing downward,
The vehicle lamp according to any one of claims 1 to 3, wherein the reflecting member is disposed on the lamp rear side of the light emitting element.
5. The vehicular lamp according to claim 4, wherein the reflecting member is configured to reflect a part of direct light from the light emitting element toward the reflector.
The vehicular lamp according to any one of claims 1 to 5, wherein a plurality of sets of the additional reflector and the reflecting member are arranged.