WO2023162906A1

WO2023162906A1 - Vehicle lamp

Info

Publication number: WO2023162906A1
Application number: PCT/JP2023/005904
Authority: WO
Inventors: 一博松本
Original assignee: 一博松本
Priority date: 2022-02-25
Filing date: 2023-02-20
Publication date: 2023-08-31

Abstract

The present invention comprises light sources (31, 32), reflecting surfaces (41, 42) that reflect light emitted from the light sources (31, 32), a projection lens (21) which transmits the light reflected by the reflecting surfaces (41, 42) to project the transmitted light toward the front side of a vehicle, and a shade (50) disposed between the light sources (31, 32) and the projection lens (21) to form a cut-off line for each light distribution pattern. The light sources (31, 32) are disposed at positions spaced apart from the optical axis of the projection lens (21), and the reflecting surfaces (41, 42) are disposed to cover the light sources from an upper side or from a lower side such that the light emitted from the light sources (31, 32) can be reflected toward the projection lens (21), thereby forming a low beam light distribution pattern or a high beam light distribution pattern.

Description

vehicle lamp

The present invention relates to a projector type vehicle lamp.

A projector-type vehicle lamp includes a light source, a reflector having a reflecting surface that reflects light emitted from the light source, a projection lens that transmits the light reflected by the reflecting surface of the reflector and projects the light forward of the vehicle, It consists of a shade that is placed near the back focal point of the projection lens and forms a low beam cutoff line.
The reflective surface is composed of a curved surface based on the ellipsoid. Of the two focal points existing on the ellipsoid, the light source is placed near one of the focal points (the first focal point) and the other focal point (the second focal point). ) is basically arranged near the back focal point of the projection lens, which has an aspherical shape.

The arrangement is different for low beam and high beam. Patent Document 1 describes the general low beam light source, reflector, projection lens and shade arrangement, and Patent Document 2 describes the general high beam light source, reflector and projection. The placement of lenses is described.

In the projector-type vehicle lamp as described above, the light passing through the vicinity of the rear focal point of the projection lens is projected through the projection lens. Affects optical performance. For this reason, the general luminous intensity distribution near the rear focal point of the projection lens should be set to In the spatial region centered at , the brightness is the highest near the center, and the brightness decreases as the distance from the center increases.
In order to form the luminous intensity distribution, the shape of the reflecting surface of the reflector is close to an elliptical surface near the first focal point, and is deformed into a shape that deviates from the elliptical surface sequentially from the light source toward the rear focal point of the projection lens. is common.
In other words, the light reflected by the reflective surface near the light source near the first focus forms a luminous intensity distribution near the center of the spatial region centered on the rear focal point of the projection lens, and is sequentially reflected by the reflective surfaces distant from the light source. Light forms a luminous intensity distribution away from the vicinity of the center.
If the entire range of the reflecting surface is an elliptical surface, the light reflected by the reflecting surface is blocked by the reflecting surface near the rear focal point of the projection lens and cannot enter the projection lens. Even if the reflective surface near the rear focus of the projection lens is removed, the light reflected by the reflective surface can only pass through the narrow area near the rear focus of the projection lens. In the formation of the luminous intensity distribution, it is not possible to ensure compliance with regulations regarding the light distribution performance of the above-described vehicle lamp and comfortable visibility for the vehicle driver.
Therefore, it is essential to cut off the reflecting surface near the rear focal point of the projection lens and largely change the shape of the reflecting surface from the elliptical surface.
Patent Literature 3 and Patent Literature 4 describe the already cut reflective surface and the deformation of the shape of the reflective surface.

JP 2014-235836 A Japanese Unexamined Patent Application Publication No. 2007-80606 JP 2018-198168 A JP-A-2005-216520

However, in the low beam of the general projector-type vehicle lamp as described above, the image of the light reflected by the reflective surface near the light source is larger than the image of the light reflected by the reflective surface far from the light source. When forming the luminous intensity distribution near the center of the spatial region with the rear focal point as the center, it is impossible to increase the luminous intensity in the extremely small range in the center, making it difficult to form an ideal luminous intensity distribution. Become.
In addition, the light forming the luminous intensity distribution near the center and near the cutoff line is formed by the light reflected by the reflecting surface located above the horizontal plane including the optical axis of the projection lens. Since the light enters the projection lens at a relatively large angle with respect to the horizontal plane through which it passes, spectral colors tend to occur near the cutoff line after passing through the projection lens.
Furthermore, as described above, the reflective surface is partly cut away, and the elliptical surface is gradually deviated from the light source toward the projection lens. There was a problem that it could not be used effectively.
In addition, in the high beam of a general projector-type vehicle lamp as described above, since the image of light reflected by the reflective surface near the light source is larger than the image of light reflected by the reflective surface far from the light source, When forming the luminous intensity distribution near the center of the spatial region with the rear focal point of the projection lens as the center, it is impossible to brighten the extremely small area in the center, making it difficult to form an ideal luminous intensity distribution. Become.
In addition, as described above, the reflective surface is partly cut away, and since the elliptical surface is gradually deviated from the light source toward the projection lens, most of the light emitted from the light source is not reflected on the reflective surface. There was a problem that it could not be used effectively.

In view of such circumstances, the present invention improves distant visibility by making it possible to increase the luminous intensity in an extremely small range of the central luminous intensity, and improves overall visibility by effectively utilizing the light emitted from the light source. An object of the present invention is to provide a vehicle lamp capable of forming an improved light distribution pattern.

The present invention is a vehicular lamp that achieves the above object by greatly changing the arrangement of the light source and the reflecting surface from the arrangement of the conventional projector type.
That is, the vehicular lamp of the present invention includes a light source, a reflective surface that reflects light emitted from the light source, and a projection lens that transmits the light reflected by the reflective surface and projects the light forward of the vehicle. In the lamp, the light source is arranged at a position spaced apart from the optical axis of the projection lens so that the emitted light is emitted upward or downward, and the reflecting surface is a concave surface based on an elliptical surface. and is arranged to cover from the upper side or the lower side so as to be able to reflect the light emitted from the light source toward the projection lens, and the light emitted from the light source forms at least one of a low-beam light distribution pattern and a high-beam light distribution pattern. characterized by forming one.

According to the present invention, the light source is arranged at a position spaced apart from the optical axis of the projection lens, and the reflecting surface is arranged so as to cover the light emitted from the light source from above or below. Light reflected at a relatively distant position can be reflected near the center of the light intensity distribution near the back focus of the projection lens. Therefore, when forming the luminous intensity distribution near the rear focal point of the projection lens, it is possible to brighten a very small range near the center.

Furthermore, the curved surface of the ellipsoid can be maintained not only near the first focal point of the reflecting surface composed of concave surfaces with reference to the ellipsoidal surface, but also between the first and second focal points and near the second focal point. Since most of the light emitted from the light source is reflected by the reflecting surface and directed to the projection lens, it is possible to make the luminous intensity distribution in the vicinity of the rear focal point of the projection lens brighter overall.
Therefore, by making it possible to increase the luminous intensity within a very small range of the central luminous intensity, it is possible to improve distant visibility, and by effectively using the light emitted from the light source, it is possible to form a light distribution pattern that can improve overall visibility. We can provide lighting fixtures.

The vehicle lamp of the present invention includes a first light source as a light source arranged so that emitted light is emitted downward, and a projection lens capable of reflecting the light emitted downward from the first light source. a first reflective surface as a reflective surface arranged to cover from below; and a shade arranged between the first light source and the projection lens to form a cutoff line of the low-beam light distribution pattern; A low-beam light distribution pattern may be formed by light emitted from the light source.

According to this configuration, similar to the above, it is possible to improve the visibility at a distance by increasing the luminous intensity in an extremely small range of the central luminous intensity, and the effective use of the light emitted from the light source improves the overall visibility. In addition to being able to form an improved low-beam light distribution pattern, the light that forms the luminous intensity distribution near the center and near the cutoff line can be formed by light reflected by a reflecting surface that is close to the horizontal plane including the optical axis of the projection lens. Since the light reflected by the first reflecting surface enters the projection lens at a relatively small angle with respect to the horizontal plane including the optical axis of the projection lens, after passing through the projection lens, the light near the cutoff line It becomes possible to suppress the generation of color.

The vehicle lamp of the present invention includes a second light source as a light source arranged so that emitted light is emitted upward, and a projection lens capable of reflecting the light emitted upward from the second light source. and a second reflecting surface as a reflecting surface arranged to cover from above, and forming a high-beam light distribution pattern by light emitted from the second light source.
According to this configuration, similar to the above, it is possible to improve the visibility at a distance by increasing the luminous intensity in an extremely small range of the central luminous intensity, and the effective use of the light emitted from the light source improves the overall visibility. An improved high beam light distribution pattern can be formed.

In the vehicular lamp of the present invention, a third reflecting surface provided in front of the front edge of the first reflecting surface and configured with a concave surface based on an elliptical surface for reflecting light from the first light source in a predetermined direction; and a fourth reflecting surface that reflects light from the third reflecting surface toward the projection lens.
In this way, the light from the first light source that does not enter the first reflecting surface can be reflected by the third reflecting surface and the fourth reflecting surface, so that it can be used as part of the low beam pattern. Therefore, the light emitted from the first light source can efficiently form a low-beam light distribution pattern.

In the vehicle lamp of the present invention, the light source is composed of a light emitting element having a light emitting surface on one surface, the light emitting surface has a long axis and a short axis perpendicular to each other, and the light source is directed with the long axis toward the projection lens side. may be placed.
In this way, the vertical width of the light projected from the projection lens and illuminating the road surface can be narrowed and the horizontal width can be widened. Therefore, it is possible to prevent a part of the front of the vehicle from becoming too bright when the low beams are turned on, and it is possible to improve the long-distance visibility for the driver.

In the vehicle lamp of the present invention, the light source comprises a light emitting element having a light emitting surface on one side, and the intersection of the normal to the light emitting surface and the horizontal plane including the optical axis of the projection lens is located closer to the projection lens than the light emitting surface. The light emitting surface may be inclined as shown in FIG.
In this way, the normal direction of the light-emitting surface, which emits the largest amount of light, can be directed toward the reflecting surface near the optical axis of the projection lens, and the central luminous intensity can be improved. can be made brighter.

In the vehicular lamp of the present invention, the fifth reflecting surface is arranged above or below the reflecting surface so as to reflect light from the light source emitted from the projection lens in a direction in which projection is not possible, in a direction in which projection is possible from the projection lens. At least one of a surface and a sixth reflecting surface arranged to the side of the reflecting surface may be provided.
By doing so, it is possible to efficiently form a light distribution pattern by reducing the amount of light that cannot be used out of the light emitted from the light source.

In the vehicular lamp of the present invention, the light from the first light source is provided in front of the front edge of the first reflecting surface, and reflects the light from the first light source toward the flat area below the shade along the shade so that the light is reflected from the projection lens. a seventh reflecting surface that projects light onto an overhead sign area; and a light shielding part that is provided on the shade and blocks light between a lower end of the overhead sign area and a cutoff line among the light from the seventh reflecting surface. may be
With this configuration, part of the light emitted forward from the front edge of the first reflecting surface from the first light source is reflected by the seventh reflecting surface onto the flat area below the shade along the shade. Of the light reflected by the flat region, the light reflected by the region adjacent to the shade is blocked by the light blocking portion, and the remaining light reaches the projection lens and is projected. Therefore, it is possible to illuminate the upper side of the road surface with a light-shielded space adjacent to the cutoff line, thereby suppressing dazzling of oncoming vehicles and illuminating the overhead sign area.

In the vehicular lamp of the present invention, the light from the second light source is provided in front of the front edge of the second reflecting surface, and reflects the light from the second light source toward the flat area along the shade on the upper side of the shade, thereby cutting the light from the projection lens. An eighth reflective surface may be provided for illuminating an adjacent position directly below the off-line.

With this configuration, part of the light emitted forward from the front edge of the second reflecting surface from the second light source is reflected by the eighth reflecting surface onto the flat region above the shade along the shade. The light reflected by the upper flat shape reaches the projection lens together with the light from the first reflecting surface, and is projected forward. As a result, when the high-beam light distribution pattern is projected forward from the projection lens, it is possible to irradiate and brighten the position immediately below and adjacent to the cut-off line of the low-beam light distribution pattern. As a result, when projecting the high-beam light distribution pattern, the difference in brightness between the upper side and the lower side of the cutoff line can be reduced, and the driver can be prevented from feeling discomfort.

1 is a front view of a lamp unit of a vehicle lamp according to Embodiment 1 of the present invention; FIG. The x and y directions in the drawing indicate the width direction and height direction of the vehicle, respectively, when the vehicle lamp is attached to the vehicle. FIG. 2 is a diagram schematically showing an optical path of light emitted from a low-beam light source in a cross-sectional view taken along line AA of the vehicle lamp shown in FIG. 1; The y and z directions in the drawing indicate the height direction and front-rear direction of the vehicle, respectively, when the vehicle lamp is mounted on the vehicle. FIG. 2 is a diagram schematically showing an optical path of light emitted from a high beam light source in a cross-sectional view taken along line AA of the vehicle lamp shown in FIG. 1; FIG. 3 is a diagram showing the reflection position on the reflection surface and the size of the reflected light source image with respect to FIG. 2 ; FIG. 2 is a road projection diagram of a light distribution pattern of a low beam emitted from the vehicle lamp shown in FIG. 1 ; FIG. 2 is a road projection diagram of a light distribution pattern of a high beam emitted from the vehicle lamp shown in FIG. 1 ; FIG. 4 is a cross-sectional view of a vehicle lamp according to a modification of Embodiment 1 of the present invention; FIG. 3 is a perspective view of a vehicle lamp according to Embodiment 2 of the present invention; Fig. 10 shows a vehicle lamp according to Embodiment 3 of the present invention, where (a) is a perspective view and (b) is a front view as seen from the front. FIG. 10 shows the vehicle lamp of Embodiment 3 shown in FIG. 9, (a) is a vertical cross-sectional view of FIG. 9 (b), and (b) is a vertical cross-sectional view for explaining a low-beam reflecting surface. 12A is a perspective view, FIG. 1B is an enlarged perspective view for explaining a low-beam reflecting surface and an optical path, and FIG. ) is a longitudinal sectional view. 4A and 4B show a vehicle lamp according to Embodiment 4 of the present invention and its modification, wherein (a) is a perspective view and (b) is a schematic perspective view of a low beam light source thereof. FIG. 12 is a diagram for explaining a low beam light source in a vehicle lamp according to Embodiment 4, where (a) is a partially enlarged perspective view showing a low beam light source and a low beam reflecting surface, and (b) is a low beam light distribution projected from a projection lens; It is a light distribution curve which shows a part of pattern, (c) is an enlarged view near the center of (b). 12A is a partially enlarged perspective view showing a low-beam light source and a low-beam reflecting surface, and FIG. 11B is a view projected from a projection lens. A light distribution curve showing a part of a low beam light distribution pattern, (c) is an enlarged view near the center of (b). 12A and 12B are diagrams for explaining a low-beam light source of another modified example of the fourth embodiment, FIG. 11A being a schematic perspective view of the low-beam light source, and FIG. is. FIG. 11 is a vertical cross-sectional view showing a vehicle lamp according to Embodiment 5 of the present invention; (a) is a plan view showing a vehicle lamp according to Embodiment 6 of the present invention, and (b) is a plan view showing a state where a sixth reflecting surface is not arranged. 7 shows a vehicle lamp according to Embodiment 7 of the present invention, where (a) is a vertical cross-sectional view, (b) is a partially enlarged vertical cross-sectional view, and (c) is a diagram for explaining a state in which a low-beam light distribution pattern is projected onto a road surface. is. 8 shows a vehicle lamp according to Embodiment 8 of the present invention, (a) is a vertical cross-sectional view, (b) is a partially enlarged vertical cross-sectional view, and (c) is a diagram for explaining a state in which a high beam light distribution pattern is projected onto a road surface. is.

Embodiments of the present invention will be described below.
[Embodiment 1]
1 to 6 show Embodiment 1 of the present invention.
FIG. 1 is a front view showing a lamp unit 10 of a vehicle lamp according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 and an optical path of a low beam.
Also, FIG. 3 shows a cross-sectional view taken along the line AA of FIG. 1 and the optical path of the high beam.

As shown in FIG. 2, the vehicle lamp 10 according to the present invention includes a projection lens 21, a low-beam light source 31 arranged behind the projection lens, and emitted downward from the low-beam light source 31 on the projection lens optical axis Lx side. It is composed of a low-beam reflecting surface 41 as a first reflecting surface for reflecting light toward the projection lens, and a shade 50 that is arranged near the rear focal point 21F of the projection lens and forms a cut-off line of the low-beam light distribution pattern. , to form the low beam light distribution pattern JG of FIG.

Further, as shown in FIG. 3, a high beam light source 32 is provided below the low beam reflecting surface 41, and a light source for reflecting the light emitted from the high beam light source 32 upward on the projection lens optical axis Lx side toward the projection lens direction. A high-beam reflecting surface 42 is configured as a second reflecting surface to form the high-beam light distribution pattern YG of FIG.

The low-beam light source 31 and the high-beam light source 32 are light emitting elements such as LEDs, and have a rectangular shape, a laterally long rectangular shape, and a vertically long rectangular shape.
The low-beam light source 31 is arranged behind the rear focal point 21F of the projection lens and above the horizontal plane including the projection lens optical axis Lx so that light is emitted downward. is arranged behind the rear focal point 21F, and is arranged so that light is emitted upward. These low-beam light source 31 and high-beam light source 32 may be arranged with the light emission direction facing the projection lens optical axis Lx, but they do not have to be arranged facing the projection lens optical axis Lx.

A low-beam reflecting surface 41 of the reflector 40 is composed of a curved surface based on an elliptical surface, and has a long axis along a straight line L1 connecting the projection lens rear focal point 21F and the emission center of the low-beam light source 31. The vicinity of the center is defined as the first focus, and the vicinity of the rear focus 21F of the projection lens is defined as the second focus.

The long axis of the low-beam reflecting surface 41 may be parallel to the projection lens optical axis Lx, but in this embodiment it is inclined so that the rear side rises. The inclination of the long axis with respect to the projection lens optical axis Lx may be, for example, within a range of 30 degrees or less with respect to the projection lens optical axis Lx. If it is excessively large, spectral colors tend to occur near the cutoff lines COL1 and COL2.

The high-beam reflecting surface 42 is composed of a curved surface based on an elliptical surface, and is coaxial with a straight line L2 connecting a position 0 to 1.0 mm below the rear focal point 21F of the projection lens and the light emission center of the high-beam light source 32. It has an axis, the first focus is near the light emission center of the high beam light source 32, and the second focus is near 0 to 1.0 mm below the rear focus 21F of the projection lens.

The shade 50 is arranged so as to be adjacent between at least the low-beam reflecting surface 41 and the high-beam reflecting surface 42 in front of the front edge of the low-beam reflecting surface 41, and the member surface is made of a member such as metal having a mirror surface property, or resin. The surfaces of the members and metal members are mirror-finished by vapor deposition of aluminum or the like, and both the upper and lower surfaces of the shade 50 have reflective properties.
A cut-off line forming portion is provided in the vicinity of the projection lens rear focal point 21F of the shade 50 . The shape of the cutoff line forming portion is a shape that forms the cutoff lines COL1 and COL2 of the low-beam light distribution pattern JG.

The shade 50 may be arranged along the projection lens optical axis Lx, but in this embodiment, it is inclined so that the rear side descends with respect to the projection lens optical axis Lx. If the rear side rises, the light reflected by the low-beam reflecting surface 41 may be reduced by the shade 50, resulting in a decrease in efficiency.

Next, the effects of this embodiment will be described.

As shown in FIG. 2, the optical path of the light emitted from the low-beam light source 31 is reflected by the low-beam reflecting surface 41, passes through the vicinity of the rear focal point 21F of the projection lens, passes through the projection lens 21, and passes through the projection lens 21 as shown in FIG. to form a low-beam light distribution pattern JG.

In this optical path, there is no part other than the shade 50 that blocks the optical path between the low-beam reflecting surface 41 and the projection lens 21, so that the low-beam reflecting surface 41 can be freely deformed from the ellipsoidal shape. , the luminous intensity distribution near the rear focal point 21F of the projection lens can be easily formed into an intended distribution.

Further, since the curved surface of the low-beam reflecting surface 41 can be maintained as an elliptical surface up to the vicinity of the rear focal point 21F of the projection lens, most of the light emitted from the low-beam light source 31 is reflected by the low-beam reflecting surface 41 and projected. It can be used to form the luminous intensity distribution near the rear focal point 21F of the lens.
As a result, it is possible to improve the overall brightness of the low-beam light distribution pattern JG formed by the light that has passed through the projection lens 21 .

In addition, as shown in FIG. 4, when the light emitted from the low-beam light source 31 is reflected at the reflection point 41RPB on the low-beam reflecting surface 41, which is relatively far away from the light source, and passes near the rear focus 21F of the projection lens, The size of the light source image RSB of the light is that the light emitted from the low beam light source 31 is reflected at a reflection point 41RPA on the low beam reflecting surface 41 which is relatively closer than the light source, and passes near the rear focus 21F of the projection lens. Since the size of the light source image RSA is smaller than the size of the light source image RSA, the light reflected by the reflecting surface at a relatively long distance from the low beam light source 31 is reflected toward the center of the luminous intensity distribution near the rear focal point 21F of the projection lens. , it is possible to brighten a very small range of the low beam high luminous intensity area HJG near the center of the low beam light distribution pattern JG, and to optimize the luminous intensity distribution of HJG.

In addition, RSB-like light that forms the luminous intensity distribution near the low beam high luminous intensity area HJG and the cutoff lines COL1 and COL2 can be formed by light reflected by a reflecting surface that is close to the horizontal plane including the optical axis Lx of the projection lens. , and the light reflected by these reflecting surfaces enters the projection lens at a relatively small angle with respect to the horizontal plane including the optical axis Lx of the projection lens. It becomes possible to suppress the occurrence of spectral color of .

Next, as shown in FIG. 3, the optical path of the light emitted from the high-beam light source 32 is reflected by the high-beam reflecting surface 42, passes through the vicinity of the rear focal point 21F of the projection lens, and passes through the projection lens 21. , to form the high beam distribution pattern YG of FIG.
Part of the light reflected by the high-beam reflecting surface 42 is reflected by the shade 50, passes through the vicinity of the rear focal point 21F of the projection lens, passes through the projection lens 21, and forms the high-beam light distribution pattern YG of FIG. Form.
3, the light emitted from the high beam light source 32 and directly reflected by the shade 50 also passes through the vicinity of the rear focal point 21F of the projection lens and is transmitted through the projection lens 21, resulting in the high beam light distribution pattern shown in FIG. YG is formed.

In this optical path, there is no component other than the shade 50 that blocks the optical path between the high beam reflecting surface 42 and the projection lens 21, so that the high beam reflecting surface 42 can be freely deformed from the ellipsoidal shape. , the luminous intensity distribution near the rear focal point 21F of the projection lens can be easily formed into an intended distribution.

In addition, since the curved surface of the high-beam reflecting surface 42 can be maintained as an elliptical surface up to the vicinity of the rear focal point 21F of the projection lens, most of the light emitted from the high-beam light source 32 is reflected by the high-beam reflecting surface 42 and the shade 50. can be used to form the light intensity distribution near the rear focal point 21F of the projection lens. Furthermore, the light emitted from the high beam light source 32 is directly reflected by the shade 50, and can be used to form the light intensity distribution near the rear focal point 21F of the projection lens.
As a result, it is possible to improve the overall brightness of the high beam light distribution pattern YG formed by the light that has passed through the projection lens 21 .

In addition, as shown in FIG. 4, the light emitted from the low-beam light source 31 is reflected at the reflection point 41RPB on the low-beam reflecting surface 41, which is relatively far away from the light source, and is reflected near the rear focal point 21F of the projection lens. The size of the light source image RSB of the light when passing through is such that the light emitted from the low-beam light source 31 is reflected at the reflection point 41RPA on the low-beam reflecting surface 41, which is relatively closer than the light source, to the rear focal point 21F of the projection lens. It is smaller than the size of the light source image RSA of the light when passing nearby.
Since this principle is the same for the high beam, the high beam light distribution pattern YG is obtained by reflecting the light reflected by the reflecting surface at a relatively long distance from the high beam light source 32 toward the center of the light intensity distribution near the rear focal point 21F of the projection lens. It is possible to brighten a very small range of the high beam high luminous intensity area HYG near the center of , and to optimize the luminous intensity distribution of HYG.

[Modification of Embodiment 1]
FIG. 7 shows a modification of the first embodiment. In the vehicle lamp of this modified example, a shade 50 is provided along a horizontal plane including the projection lens optical axis Lx. A high beam light source 32 and a high beam reflecting surface 42 are arranged on the side. Others are configured in the same manner as in the first embodiment.
Even with such a vehicle lamp, it is possible to obtain the same effects as those of the first embodiment. Further, since the shade 50 is provided horizontally, although the area of the low-beam reflecting surface 41 is reduced, most of the light reflected by the shade 50 after being reflected by the low-beam reflecting surface 41 enters the projection lens 21. It is possible to improve the flexibility of the configuration of the vehicle lamp by selecting it according to various conditions.

[Embodiment 2]
FIG. 8 shows Embodiment 2 of the present invention. In the second embodiment, portions corresponding to those of the first embodiment are denoted by the same reference numerals, and configurations and functions different from those of the first embodiment will be described.
As shown in FIG. 8, this is an example of using a plurality of light sources, in which three low-beam light sources 31 are used and three low-beam reflecting surfaces 41 are arranged on the reflector 40 .

By arranging the second focal position of each reflecting surface near the rear focal point 21F of the projection lens or the horizontal plane including the rear focal point 21F of the projection lens, the interaction of the light reflected by each reflecting surface causes the rear side of the projection lens to Fine adjustment of the luminous intensity distribution near the focal point 21F becomes possible.
As a result, compared with the case of a single light source, it is possible to finely adjust the light distribution in the light distribution pattern, which contributes to the improvement of visibility.

Furthermore, by dispersing the light sources, it becomes possible to disperse the amount of heat generated from the light sources, which is effective for heat resistance as a vehicle lamp.
It should be noted that the number of light sources and reflecting surfaces may be single or plural for both low beam and high beam.
Also, a plurality of light sources may be arranged on the same horizontal plane, or the light sources may be arranged inconsistently with respect to the same horizontal plane.

[Embodiment 3]
FIGS. 9A, 9B and 10A, 10B show a vehicle lamp according to Embodiment 3. FIG. The same reference numerals are given to the parts corresponding to those of the first embodiment and the modified example.
Similar to the modified example of Embodiment 1, this vehicle lamp has a shade 50 along a horizontal plane including the projection lens optical axis Lx, and a low beam light source 31 and a low beam reflecting surface 41 are arranged above the shade 50. , a high beam light source 32 and a high beam reflecting surface 42 are arranged below the shade 50 .
In this embodiment, the high beam light source 32 and the high beam reflecting surface 42 are provided on both sides of the projection lens optical axis Lx. Light from each high beam light source 32 is reflected by each high beam reflecting surface 42 near the rear focal point 21</b>F of the projection lens 21 and projected from the projection lens 21 .

A third reflecting surface 43 that reflects the light from the low beam light source 31 in a predetermined direction protrudes downward from the shade 50 at a position behind the cutoff line forming portion of the shade 50 and forward of the front edge of the low beam reflecting surface 41 . A fourth reflecting surface 44 is provided above the shade 50 to reflect the light from the third reflecting surface 43 toward the projection lens 21 .
Here, the front edge of the low-beam reflecting surface 41 may be a part near the major axis of the front edge of the concave surface based on the elliptical surface, and at least the rear end forming the cutoff lines COL1 and COL2 in the shade 50. Any leading edge that is positioned more rearwardly may be used.

The vehicle lamp of Embodiment 3 is provided behind the projection lens 21 with a base body 51 arranged along a plane including the projection lens optical axis Lx and fixed to a bracket (not shown) or the like. The shape of the base body 51 is arbitrary and can be appropriately set according to various conditions of the portion where the vehicle lamp is installed. In this embodiment, the shade 50 is fixed to the base body 51 at both left and right edges. The low-beam reflecting surface 41, the high-beam reflecting surface 42, and the third reflecting surface 43 are all fixed to the base body 51 as well. Although detailed illustration is omitted, the low beam light source support portion 301 provided with the low beam light source 31 and the fourth reflecting surface 44 are also fixed to the base body 51 .

The third reflecting surface 43, as shown by the phantom lines in FIG. 10(b), is composed of a concave surface based on the ellipsoidal surface, and may be a curved surface obtained by deforming the concave surface based on the ellipsoidal surface. . The elliptical surface that serves as a reference for the third reflecting surface 43 is set so that the first focus 43A coincides with the low-beam light source 31 and the second focus 43B is set near the fourth reflecting surface 44 . In this embodiment, as shown in FIGS. 10A and 10B, the second focal point 43B of the third reflecting surface 43 is set vertically above the projection lens optical axis Lx.

The fourth reflecting surface 44 is composed of a concave surface based on a parabolic surface, an elliptical surface, or a free curved surface, and may be a curved surface deformed based on these concave surfaces. The concave surface of the fourth reflecting surface 44 is arranged vertically above the third reflecting surface 43 so as to face the third reflecting surface 43, and can reflect the light from the third reflecting surface 43 toward the projection lens 21. It has become.
Others are the same as the modification of the first embodiment.

In the vehicle lamp of Embodiment 3, most of the light emitted from the low-beam light source 31 is applied to the low-beam reflecting surface 41 and reflected toward the projection lens 21 . Similarly, it is projected from the projection lens 21 as a low-beam light distribution pattern JG.
Part or all of the rest of the light emitted from the low-beam light source 31 is directly irradiated onto the third reflecting surface 43 ahead of the front edge of the low-beam reflecting surface 41 . At the third reflecting surface 43 , the light is reflected in a predetermined direction, that is, toward the direction of the fourth reflecting surface 44 . The light reaching the fourth reflecting surface 44 is reflected toward the projection lens 21 and projected from the projection lens 21 . Therefore, from the projection lens 21, the light from the low-beam reflecting surface 41 and the light from the fourth reflecting surface 44 are projected forward as a low-beam light distribution pattern JG.

According to the vehicle lamp of Embodiment 3 as described above, similarly to Embodiment 1, the curved surfaces of the low-beam reflecting surface 41 and the curved surface of the high-beam reflecting surface 42 are each elliptical up to the vicinity of the rear focal point 21F of the projection lens. Since the surface can be maintained, the overall brightness of the low-beam light distribution pattern JG and the high-beam light distribution pattern YG can be improved. Also, the light emitted from the low beam light source 31 and the high beam light source 32 can be reflected at relatively distant positions of the low beam reflecting surface 41 and the high beam reflecting surface 42 to irradiate near the center of the light intensity distribution near the rear focal point 21F of the projection lens. Therefore, the luminous intensity distribution can be optimized by brightening a very small range near the center. Moreover, since the light can enter the projection lens 21 at a small angle with respect to the projection lens optical axis Lx, it is possible to prevent the occurrence of spectral colors on the upper edge sides of the cutoff lines COL1 and COL2.

Moreover, according to this vehicular lamp, the third reflecting surface is provided in front of the front edge of the low-beam reflecting surface 41 and is composed of a concave surface based on an elliptical surface, and reflects the light from the low-beam light source 31 in a predetermined direction. 43 and the fourth reflecting surface 44 for reflecting the light from the third reflecting surface 43 toward the projection lens 21, the light from the low-beam light source 31 that does not enter the low-beam reflecting surface 41 is reflected from the third reflecting surface 43. By reflecting on the reflecting surface 43 and the fourth reflecting surface 44, it can be used as a part of the low beam pattern. Therefore, the light emitted from the low-beam light source 31 can efficiently form the low-beam light distribution pattern JG.

[Modification of Embodiment 3]
FIGS. 11(a) to 11(c) show modifications of the third embodiment.
In this modification, the projection lens 21 has a thin cylindrical lens shape and is thin in the vertical direction.
The third reflecting surface 43 has a shape in which two concave surfaces are combined with an ellipsoidal surface as a reference, and the ellipsoidal surfaces serving as references for the respective concave surfaces are formed symmetrically with respect to the projection lens optical axis Lx. .
A first focal point 43A of each concave surface of the third reflecting surface 43 coincides with the common low-beam light source 31, and a second focal point 43B of each concave surface is opposite to each other via the projection lens optical axis Lx, the first reflecting surface , and reflects the light from the low beam light source 31 to the right and left sides of the low beam reflecting surface 41, respectively.

A plurality of fourth reflecting surfaces 44 are provided so as to correspond to each concave surface of the third reflecting surface 43, and are arranged near the second focal point 43B of each concave surface of the third reflecting surface 43. Each fourth reflecting surface 44 is composed of a concave surface based on a parabolic surface, an elliptical surface, or a free-form surface, and is arranged so as to be able to reflect light from each third reflecting surface 43 toward the projection lens 21 . In this embodiment, each fourth reflecting surface 44 is arranged to have the same height as the low-beam reflecting surface 41 from the horizontal plane including the projection lens optical axis Lx.

The shade 50 fixed to the base body 51 is provided with openings 52 at corresponding positions so that the light reflected by each concave surface of the third reflecting surface 43 reaches each fourth reflecting surface 44 . The opening 52 can be configured between the shade 50 and the reflector 40, or can be provided by making a hole in another component.
Others are the same as those of the vehicle lamp of Embodiment 3 shown in FIGS.
In this modified example, in addition to obtaining the same effects as those of the vehicle lamp of Embodiment 3 shown in FIGS. 9A and 9B, the vertical thickness of the low beam unit can be significantly reduced. It is possible.

[Embodiment 4]
FIGS. 12(a), 12(b) and 13(a) to 13(c) show a vehicle lamp according to the fourth embodiment.
In the vehicle lamp of Embodiment 4, the projection lens 21 has a thin cylindrical lens shape, and as the low-beam light source 31, a light-emitting element having a light-emitting surface 33 on one side is used as shown in FIG. 12(b). It is Although the light emitting element is fixed to the substrate, detailed illustration thereof is omitted. Others are the same as the modification of the first embodiment.
The light emitting surface 33 has a long axis La and a short axis Lb perpendicular to each other, and as shown in FIG. It is arranged above the reflecting surface 41 . Here, the long axis La of the low-beam light source 31 is arranged in a direction orthogonal to the projection lens optical axis Lx.

According to the low beam unit of the vehicle lamp of Embodiment 4, similar to the modified example of Embodiment 1, it is possible to increase the luminous intensity in a very small range of the central luminous intensity, thereby improving the long-distance visibility. Effective use of the light emitted from the low-beam light source 31 can improve overall visibility and prevent the occurrence of spectral colors. 13(b) and 13(c) show part of the light distribution curve when the low beam light distribution pattern is projected by this low beam unit.

[Modification of Embodiment 4]
FIGS. 12(a), 12(b), and 14(a) to 14(c) show a low beam unit of a vehicle lamp according to a modified example of the fourth embodiment.
In the low-beam unit of the vehicle lamp according to the modified example of the fourth embodiment, as shown in FIG. It is the same as the fourth embodiment. Here, the long side of the low-beam light source 31 may be arranged in the front-rear direction, or may be inclined with respect to the projection lens optical axis Lx.

14(b) and 14(c) because the low beam light source 31 is arranged with the long axis La directed toward the projection lens 21 side. A low beam light distribution pattern as shown in is obtained. That is, when the low beam is turned on, the vertical width of the light projected from the projection lens 21 to irradiate the road surface can be narrowed and the horizontal width can be widened, so that a part in front of the vehicle, for example, around 10 to 20 m, becomes bright. You can prevent overdoing it. Therefore, the long-distance visibility for the driver can be improved.

[Another Modification of Embodiment 4]
FIGS. 15(a) and 15(b) show a low beam unit of a vehicle lamp according to another modified example of the fourth embodiment.
In a low-beam unit of a vehicle lamp according to another modification of the fourth embodiment, as shown in FIG. A light emitting element having a maximum in the linear direction is used. Then, as shown in FIG. 15B, the low beam light source 31 is inclined so that the intersection of the normal to the light emitting surface 33 and the horizontal plane including the projection lens optical axis Lx is located closer to the projection lens 21 than the light emitting surface 33 is. are placed. For example, the light emitting surface 33 may be tilted in a range of 35 degrees or less with respect to the horizontal. Others are the same as the modification of the first embodiment.

Even with such a configuration, the same effect as the low beam unit of Embodiment 4 can be obtained, and the intersection of the normal to the light emitting surface 33 and the horizontal plane including the projection lens optical axis Lx is located closer to the projection lens 21 than the light emitting surface 33. Since the light emitting surface 33 is inclined so that the light intensity is the largest, the normal line direction of the light emitting surface 33 can be directed to the low beam reflecting surface 41 near the optical axis Lx of the projection lens, thereby improving the center luminous intensity. It is possible to brighten the vicinity of the center of the low-beam light distribution pattern JG.

[Embodiment 5]
FIG. 16 shows a vehicle lamp according to Embodiment 5. FIG.
The vehicle lamp of Embodiment 5 is the same as the modified example of Embodiment 1 except that a fifth reflecting surface 45 is arranged above the low beam reflecting surface 41 in front of the light emitting surface 33 of the low beam light source 31. .
The fifth reflecting surface 45 reflects light from the low-beam light source 31 on the low-beam reflecting surface 41 or the surface of the shade 50 in a direction that cannot be projected from the exit surface of the projection lens 21, and reflects the light in a projectable direction. It is.
That is, when the light from the low-beam light source 31 is applied to the low-beam reflecting surface 41, part of the light is directed upward from the upper edge of the projection lens 21 due to the local unevenness of the low-beam reflecting surface 41, and the like. may be reflected by Further, when the light from the low-beam light source 31 is irradiated onto the surface of the shade 50 in front of the edge of the low-beam reflecting surface 41, the light may be reflected upward from the upper edge of the projection lens 21 by the shade. . The light can be projected from the projection lens 21 by reflecting it inward from the edge of the projection lens 21 on the fifth reflecting surface 45 .

The fifth reflecting surface 45 may be a flat surface, a curved surface, or a combination of a flat surface and a curved surface. Furthermore, various uneven shapes may be provided on the surface in order to form a desired light distribution pattern.
Further, the fifth reflecting surface 45 is inclined in the front-rear direction so that the projection lens 21 side rises, but it may be inclined in the left-right direction, and is appropriately arranged so as to obtain the desired pattern shape. .

According to the vehicle lamp of Embodiment 5, the light from the low-beam light source 31 emitted from the projection lens 21 in a non-projectable direction is reflected from the projection lens 21 in a projectable direction. Since the fifth reflecting surface 45 is arranged above or below the surface 41, the low beam light distribution pattern JG can be efficiently formed by reducing unusable light out of the light emitted from the low beam light source 31. - 特許庁
In the fifth embodiment, the fifth reflecting surface 45 is arranged above the low beam reflecting surface 41 of the low beam unit, but the fifth reflecting surface 45 may be arranged below the high beam reflecting surface 42 of the high beam unit. , effects similar to those described above can be obtained.

[Embodiment 6]
17(a) and 17(b) are diagrams for explaining the vehicle lamp of Embodiment 6. FIG.
In the vehicle lamp of Embodiment 6, the low beam unit includes a plurality of low beam light sources 31 and low beam reflecting surfaces 41, five low beam light sources 31, and five low beam reflecting surfaces 41 are arranged on the reflector 40. A plurality of low-beam light sources 31 and low-beam reflecting surfaces 41 are arranged on the left and right sides of the projection lens optical axis Lx.
As shown in FIG. 17(a), the vehicle lamp of Embodiment 6 includes sixth reflecting surfaces 46 on the left and right front sides of the area where all the low beam reflecting surfaces 41 are arranged. In the present embodiment, the distance between the right and left sixth reflecting surfaces 46 is arranged so that the distance therebetween becomes narrower toward the projection lens 21 side.
The sixth reflecting surface 46 may be a flat surface, a curved surface, or a combination of a flat surface and a curved surface. Moreover, various uneven shapes may be provided on the surface. Further, the left and right sixth reflecting surfaces 46 are set upright in a direction perpendicular to the horizontal plane including the optical axis Lx of the projection lens, but they may be inclined in the front-rear direction or in the left-right direction so that the desired pattern shape can be obtained. properly positioned so that

When a plurality of low-beam reflecting surfaces 41 are arranged side by side, the light reflected by some of the low-beam reflecting surfaces 41 may travel in a direction that cannot be projected from the projection lens 21 . For example, when the light reflected by the low-beam reflecting surface 41 arranged at a large inclination with respect to the projection lens optical axis Lx goes in a direction in which the light cannot enter the projection lens 21, or when the projection lens 21 Although the light can be incident on the projection lens 21, the incident angle with respect to the exit surface 21d of the projection lens 21 is large and the light is totally reflected.

In the sixth embodiment, as shown in FIG. 17A, the light reflected by the low-beam reflecting surface 41 and traveling in a direction that cannot be projected from the projection lens 21 is reflected by the sixth reflecting surfaces 46 arranged on the left and right as shown in FIG. , the light can be reflected in a direction that can be projected from the projection lens 21, that is, in a direction that can be incident on the projection lens 21, or in a direction that is not totally reflected by the exit surface of the projection lens 21, and can be projected from the projection lens 21.

According to the vehicle lamp of Embodiment 6, the light from the low-beam light source 31 that is emitted from the projection lens 21 in a direction that cannot be projected is reflected from the projection lens 21 in a direction that can be projected. Since the sixth reflecting surfaces 46 are arranged on the left and right sides of the reflecting surface 41 for light, the amount of light emitted from the plurality of low-beam light sources 31 that cannot be used is reduced, and the low-beam light distribution pattern JG is efficiently formed. can.

[Embodiment 7]
FIGS. 18A to 18C show a vehicle lamp according to Embodiment 7. FIG.
In the vehicle lamp of Embodiment 7, the light from the low-beam light source 31 is reflected toward the flat area below the shade 50 along the shade 50 at a position forward of the front edge of the low-beam reflecting surface 41 as the seventh reflection. A surface 47 is provided, and a light blocking portion 53 for blocking light from the seventh reflecting surface 47 at a position adjacent to the shade 50 is provided so as to protrude below the shade 50 . The seventh reflecting surface 47 is formed in a shape capable of reflecting light that can be projected onto the entire overhead sign area OSP, and the shape of the light shielding portion 53 can be appropriately set according to the intended light shielding range.
Others are the same as the modification of the first embodiment.

In this vehicle lamp, the light from the low-beam light source 31 projected forward from the front edge of the low-beam reflecting surface 41 passes through the rear end of the shade 50 extending rearward from the rear focal point 21F of the projection lens 21 and the low-beam light. and the front edge of the reflective surface 41 for use, and reaches the seventh reflective surface 47 .
Light from the low-beam light source 31 is reflected toward the lower flat region of the shade 50 by the seventh reflecting surface 47, and this light passes through the lower surface side of the shade 50 and near the tip of the shade forming a cutoff line. and reaches the projection lens 21 . When the light in this flat region is projected from the projection lens 21 as it is, it is projected in a range that is narrow in the vertical direction and spreads in the horizontal direction directly above the cutoff lines COL1 and COL2.
Therefore, the light shielding part 53 shields the light in a very narrow range adjacent to the lower surface of the shade 50 among the light reflected toward the flat area from the seventh reflecting surface 47, thereby achieving the light as shown in FIG. 18(c). In addition, light can be projected from the projection lens 21 onto the overhead sign area OSP while blocking light between the lower end of the overhead sign area OSP and the cutoff line.

According to the vehicle lamp of Embodiment 7, light in a narrow range adjacent to the shade 50 is blocked by the light blocking portion, out of the light reflected by the seventh reflecting surface 47 onto the flat region along the lower surface of the shade 50. Therefore, the light can be projected above the road surface with a light-shielded space above the cutoff lines COL1 and COL2, and the overhead sign area OSP can be illuminated while suppressing dazzle of oncoming vehicles.

[Embodiment 8]
FIGS. 19A to 19C show the vehicle lamp of Embodiment 8. FIG.
In the vehicle lamp of the eighth embodiment, an eighth reflecting surface 48 is provided at a position forward of the front edge of the high beam reflecting surface 42 to reflect the light from the high beam light source 32 toward the flat area along the upper surface of the shade 50. It is Others are the same as the modification of the first embodiment.
In the eighth embodiment, part of the light emitted forward from the front edge of the high beam reflecting surface 42 from the high beam light source 32 is directed to the rear end of the shade 50 extending rearward from the rear focal point 21F of the projection lens 21. , and the front edge of the high-beam reflecting surface 42 to reach the eighth reflecting surface 48 .
Light from the high-beam light source 32 is reflected by the eighth reflecting surface 48 toward a flat area along the upper surface of the shade 50, and this light passes through the upper surface of the shade 50 and is projected together with the light from the low-beam reflecting surface 41. The light reaches the lens 21 and is projected forward to irradiate an area AHP adjacent to the high beam irradiation area in the low beam irradiation area.

According to the vehicle lamp of the eighth embodiment, when projecting the high beam light distribution pattern YG forward from the projection lens 21, the adjacent position immediately below the cutoff line of the low beam light distribution pattern JG is irradiated to brighten it. can. As a result, when the high-beam light distribution pattern YG is projected, the difference in brightness between the upper side and the lower side of the cutoff line can be reduced, and the sense of discomfort felt by the driver can be reduced.

[Other embodiments]
It should be noted that each of the above embodiments can be appropriately modified within the scope of the present invention. For example, each of the above-described embodiments may be implemented independently, but it is also possible to implement a combination of multiple embodiments.
In addition, in many of the above-described embodiments, the projection lens has a circular outer shape when viewed from the front, but it is also possible to configure the projection lens in an outer shape other than circular, such as a rectangular outer shape.

Although the projection lens back surface 21b is shown in a planar shape in each of the above embodiments, it can also be configured in a convex shape.

In each of the above-described embodiments, the shape of the shade 50 is configured so that COL2 is positioned higher than COL1 as shown in FIG. It is also possible to form the shape of the shade 50 with a low-beam light distribution pattern of light distribution on the right side.

In each of the above embodiments, the angle of L1 with respect to the optical axis Lx of the projection lens can be changed depending on the size and positional relationship of the aspherical lens, and the angle of L2 with respect to the optical axis Lx of the projection lens is , the angle can be changed according to the size and positional relationship of the aspheric lens.

In each of the above-described embodiments, the low-beam reflecting surface 41 and the high-beam reflecting surface 42 of the reflector are shown as single curved reflecting surfaces for one light source. , and the surface may be provided with various uneven shapes in order to form a desired light distribution pattern.

In each of the embodiments described above, the straight line L1 connects the projection lens rear focus 21F and the light emission center of the low beam light source 31. Even in the case of straight lines connecting positions, the same effects as those of the above embodiments can be obtained.
Similarly, a straight line L2 is shown connecting the position 0 to 1.0 mm below the rear focus 21F of the projection lens and the emission center of the high beam light source 32, but the straight line L2 is shown to connect the center of light emission of the high beam light source 32. Even in the case of a straight line connecting the position below 0 mm and the position slightly deviated from the light emission center of the high beam light source 32, the same effects as those of the above embodiments can be obtained.

In many of the embodiments described above, the low beam light source 31 is arranged in a direction orthogonal to L1, but it can be tilted according to the intended light distribution pattern. Similarly, the high beam light source 32 is arranged in a direction perpendicular to L2, but it can be tilted according to the intended light distribution pattern.

In each of the above embodiments, the shade 50 is inclined with respect to the horizontal plane including the optical axis Lx of the projection lens, but it can be made horizontal, and the opposite inclination is also possible.

Regarding the downward direction of irradiation of the light emitted from the low beam light source 31 and the upward direction of the irradiation direction of light emitted from the high beam light source 32 in each of the above embodiments, the position of the reflecting surface and the light source depends on the intended light distribution pattern. Since it can be tilted depending on the relationship, it is not limited to vertically downward or vertically upward.
Also, the low beam light source 31 and the high beam light source 32 are not limited to LEDs, and may be, for example, halogen bulb light sources, HID light sources, or the like.

The present invention can be widely applied to projector-type vehicle lamps. It is possible to improve the degree of freedom in light distribution design of the projector and contribute to the improvement of the light distribution performance.

10 Vehicle lamp 20 Lens holder 21 Posting lens 21b Projection lens rear surface 21F Projection lens rear focal point 21c Entrance surface 21d Output surface 301 Low beam light source support 302 High beam light source support 31 Low beam light source (first light source)
32 high beam light source (second light source)
33 Light-emitting surface La Long axis Lb Short axis 40 Reflector 41 Reflecting surface for low beam (first reflecting surface)
41RPA Reflection point 1 on the reflection surface for low beam
41RPB Reflection point 2 on the reflection surface for low beam
Light source image 1 of the light reflected by the reflection point 1 on the RSA low beam reflection surface
RSB Light source image 2 of light reflected at reflection point 2 on reflection surface for low beam
42 Reflective surface for high beam (second reflecting surface)
43 Third reflecting surface 43A First focus 43B Second focus 44 Fourth reflecting surface 45 Fifth reflecting surface 46 Sixth reflecting surface 47 Seventh reflecting surface 48 Eighth reflecting surface Lx Projection lens optical axis 50 Shade 51 Base body 52 Opening 53 Light blocking part L1 Straight line L2 connecting the rear focus 21F of the projection lens and the emission center of the low beam light source 31 Straight line JG connecting the position 0 to 1.0 mm below the rear focus 21F of the projection lens and the emission center of the high beam light source 32 Low beam Light distribution pattern COL1 Cutoff line on the right side of the center of the low beam distribution pattern COL2 Cutoff line on the left side of the center of the low beam distribution pattern HJG Low beam high brightness area YG High beam distribution pattern HYG High beam high brightness area OSP Overhead sign area AHP High beam irradiation Adjacent region with region

Claims

A vehicular lamp in which a light source, a reflective surface that reflects light emitted from the light source, and a projection lens that transmits the light reflected by the reflective surface and projects the light forward of the vehicle are arranged,
The light source is arranged at a position spaced apart from the optical axis of the projection lens so that emitted light is emitted upward or downward,
The reflecting surface is formed of a concave surface based on an elliptical surface, and is arranged to cover the light emitted from the light source toward the projection lens from the upper side or the lower side so as to be able to be reflected,
A vehicle lamp, wherein at least one of a low-beam light distribution pattern and a high-beam light distribution pattern is formed by light emitted from the light source.
a first light source as the light source arranged so that emitted light is emitted downward;
a first reflecting surface as the reflecting surface arranged to cover the light emitted downward from the first light source toward the projection lens so as to be reflected from below;
a shade disposed between the first light source and the projection lens and forming a cutoff line of the low-beam light distribution pattern;
2. The vehicle lamp according to claim 1, wherein the light emitted from the first light source forms the low-beam light distribution pattern.
a second light source as the light source arranged below the shade so that emitted light is emitted upward; and the light emitted upward from the second light source is directed toward the projection lens. a second reflective surface as the reflective surface arranged so as to be able to reflect from above, and
3. The vehicle lamp according to claim 2, wherein the light emitted from the second light source forms a high-beam light distribution pattern.
a second light source as the light source arranged so that emitted light is emitted upward;
a second reflecting surface as the reflecting surface arranged to cover the light emitted upward from the second light source toward the projection lens from above so as to be able to reflect the light;
2. The vehicle lamp according to claim 1, wherein the light emitted from the second light source forms the high-beam light distribution pattern.
a third reflecting surface provided in front of the front edge of the first reflecting surface, configured with a concave surface based on an elliptical surface, and reflecting light from the first light source in a predetermined direction; 3. The vehicle lamp according to claim 2, further comprising a fourth reflecting surface that reflects the light from the light toward the projection lens.
The light source comprises a light-emitting element having a light-emitting surface on one surface, the light-emitting surface having a long axis and a short axis perpendicular to each other, and the light source is arranged with the long axis directed toward the projection lens. 2. The vehicle lamp according to claim 1, wherein
The light source is composed of a light emitting element having a light emitting surface on one surface, and the light source is arranged so that the intersection of a normal line of the light emitting surface and a horizontal plane including the optical axis of the projection lens is located closer to the projection lens than the light emitting surface. 2. The vehicle lamp according to claim 1, wherein the light emitting surface is inclined.
a fifth reflecting surface arranged above or below the reflecting surface so as to reflect light from the light source emitted from the projection lens in a direction that cannot be projected from the projection lens in a direction that can be projected from the projection lens; 2. The vehicle lamp according to claim 1, further comprising at least one of a sixth reflecting surface arranged laterally of the reflecting surface.
Provided in front of the front edge of the first reflecting surface, reflecting light from the first light source toward a flat area along the shade under the shade, from the projection lens to the overhead sign area a seventh reflective surface that projects light;
3. The light shielding part provided in the shade for blocking light between the lower end of the overhead sign area and the cutoff line among the light from the seventh reflecting surface. Vehicle lighting fixtures as described.
Provided in front of the front edge of the second reflecting surface, reflecting light from the second light source toward a flat area along the shade on the upper side of the shade, from the projection lens directly below the cutoff line 4. The vehicle lamp according to claim 3, further comprising an eighth reflecting surface for illuminating an adjacent position.