JP6495992B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a projector-type vehicular lamp.

  In general, in a projector-type vehicular lamp, a light distribution pattern is formed by reversely projecting a light source image formed on the rear focal plane of a projection lens to the front.

  When a light distribution pattern having a cut-off line at the upper end portion such as a low beam light distribution pattern is formed by light emitted from such a vehicle lamp, a shade or the like is provided between the light source and the projection lens. A cut-off forming member is arranged.

  In “Patent Document 1”, in such a projector-type vehicular lamp, a first sub-light that reflects light from a light source downward is provided in front of a reflector that reflects light from the light source toward a projection lens. A configuration is described in which a reflector is disposed and a second sub-reflector that reflects light reflected from the first sub-reflector forward through the space below the projection lens is disposed.

  On the other hand, in “Patent Document 2”, in such a projector type vehicle lamp, the light from the light source is returned to the position of the light source in front of the reflector that reflects the light from the light source toward the projection lens. A configuration in which a sub-reflector to be reflected is arranged is described. In this vehicular lamp, retroreflected light from the sub-reflector is reflected by the surface of the light source (specifically, the light emitting element) and re-enters the reflector, and the reflected light from the reflector is re-reflected toward the projection lens. It is the composition which makes it.

JP 2003-338209 A JP 2012-190551 A

  If the lamp structure described in the above “Patent Document 1” is adopted, the light distribution pattern formed by the light emitted from the projection lens is reflected by the light from the light source sequentially reflected by the first and second sub-reflectors. By adding the formed additional light distribution pattern, the brightness of the light distribution pattern can be reinforced.

  However, when such a configuration is adopted, there is a problem that the vertical width of the entire lamp increases due to the presence of the first and second sub-reflectors, and the lamp cannot be configured compactly.

  On the other hand, if the lamp configuration described in “Patent Document 2” is adopted, it is possible to reinforce the brightness of the light distribution pattern after the lamp is configured compactly.

  However, when such a configuration is adopted, the retroreflected light from the sub-reflector is reflected by the surface of the light source and then re-reflected by the reflector. The additional light distribution pattern has a low degree of freedom in its formation position and shape, and therefore there is a problem that the brightness of the light distribution pattern cannot be effectively reinforced.

  The present invention has been made in view of such circumstances, and in a projector-type vehicular lamp, an additional light distribution pattern that can effectively reinforce the brightness of the light distribution pattern by a compact lamp configuration. An object of the present invention is to provide a vehicular lamp that can be formed.

  In the present invention, the first and second sub-reflectors are provided, and the arrangement of the second sub-reflectors is devised to achieve the above object.

That is, the vehicular lamp according to the present invention is
In a vehicular lamp comprising: a projection lens; a light source disposed behind the rear focus of the projection lens; and a reflector that reflects light from the light source toward the projection lens.
A first sub-reflector that reflects light from the light source toward the rear is arranged in front of the reflector and in front of the rear focal point, and
A second sub-reflector that reflects reflected light from the first sub-reflector toward the projection lens is disposed behind the rear focal point.

  The type of the “light source” is not particularly limited, and for example, a light emitting element such as a light emitting diode or a laser diode, a light source bulb, or the like can be employed.

  As long as the “reflector” is configured to reflect the light from the light source toward the projection lens, the specific arrangement, reflecting surface shape, and the like are not particularly limited.

  As long as the “first sub-reflector” is disposed so as to reflect the light from the light source toward the rear in front of the reflector, the specific arrangement, the shape of the reflecting surface, and the like are not particularly limited. .

  As long as the “second sub-reflector” is disposed so as to reflect the reflected light from the first sub-reflector toward the projection lens, the specific arrangement, the shape of the reflecting surface, and the like are not particularly limited. Absent.

  As shown in the above configuration, the vehicular lamp according to the present invention is configured as a projector-type lamp, but in front of the reflector and in front of the rear focus of the projection lens, A first sub-reflector that reflects light toward the rear is disposed, and a first sub-reflector that reflects light reflected from the first sub-reflector toward the projection lens is located behind the rear focal point of the projection lens. Since the two sub-reflectors are arranged, the following operational effects can be obtained.

  That is, by using a configuration in which the reflected light from the first sub-reflector is reflected toward the projection lens by the second sub-reflector, the first and second sub-reflectors are dedicated for forming an additional light distribution pattern. It can be used as a light control member. Accordingly, the degree of freedom of the position where the additional light distribution pattern is formed or the size and shape of the additional light distribution pattern can be increased, whereby the brightness of the light distribution pattern can be effectively reinforced.

  In this case, in the present invention, since the reflected light from the second sub-reflector is emitted forward through the projection lens, the first and second sub-reflectors can be arranged in a compact layout. .

  Thus, according to the present invention, an additional light distribution pattern that can effectively reinforce the brightness of the light distribution pattern can be formed with a compact lamp structure in the projector-type vehicle lamp.

  In the above configuration, the first and second sub-reflectors are arranged in pairs on the left and right sides with respect to the optical axis of the projection lens, and the reflected light from the left first sub-reflector is converted into the left second sub-reflector. And the reflected light from the right first sub-reflector is reflected by the right second sub-reflector, the following effects can be obtained.

  That is, by doing so, the reflected light from each second sub-reflector can be efficiently incident on the projection lens, and the additional light distribution pattern can be formed at two positions on the left and right. As a result, the degree of freedom of the formation position and shape of the additional light distribution pattern can be further increased, and thereby the brightness of the light distribution pattern can be more effectively reinforced.

  In the above configuration, if the second sub-reflector is formed by integral molding with the reflector, the above-described effects can be obtained while suppressing an increase in the number of parts.

  In the above configuration, the cut-off forming member is disposed between the light source and the projection lens, and the cut-off forming member blocks the light-blocking position and the light-blocking position for blocking part of the reflected light from the reflector. If it is configured to be able to take the light-blocking release position to be released, the brightness of both the low-beam light distribution pattern and the high-beam light distribution pattern can be effectively reinforced.

  In this case, if the configuration of the reflector includes an upper reflector and a lower reflector, the shape of the reflection surface of the upper reflector and the lower reflector is formed as a light distribution pattern for low beam and a light distribution pattern for high beam. It is possible to easily set the shape suitable for this.

  At this time, as the configuration of the second sub-reflector, it is effective from the following points to be formed by integral molding with the lower reflector.

  That is, if the concentration of the reflected light from the lower reflector is increased, the central luminous intensity of the high beam light distribution pattern can be increased. In this case, the left and right width of the lower reflector is narrower than the left and right width of the upper reflector. Therefore, it is possible to easily form the second sub reflector by integral molding with the lower reflector. Therefore, by adopting such a configuration, it is possible to provide the second sub-reflector while keeping the lamp configuration compact and suppressing an increase in the number of parts.

The front view which shows the vehicle lamp which concerns on one Embodiment of this invention II-II sectional view of FIG. Sectional view along line III-III in Fig. 2 (Part 1) Sectional view along line III-III in Fig. 2 (Part 2) The perspective view which shows the main components of the said vehicle lamp The figure which shows transparently the light distribution pattern formed on the virtual vertical screen arrange | positioned in the position of 25 m ahead of the vehicle by the light irradiated ahead from the said vehicle lamp The same figure as FIG. 2 which shows the modification of the said embodiment The same figure as FIG. 4 which shows the said modification The same figure as FIG. 6 which shows the effect | action of the said modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a vehicular lamp 10 according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II. 3 and 4 are cross-sectional views taken along the line III-III of FIG. 2, and FIG. 5 is a perspective view showing main components of the vehicular lamp 10.

  As shown in these drawings, the vehicular lamp 10 according to the present embodiment includes a projection lens 12, a light emitting element 14 disposed behind the rear focal point F of the projection lens 12, and the light emitting element 14. Is arranged so as to cover the light from the light emitting element 14, the reflector 16 reflects the light from the light emitting element 14 toward the projection lens 12, the movable shade 18 disposed between the light emitting element 14 and the projection lens 12, The sub-reflectors 22L and 22R and the second sub-reflectors 24L and 24R are provided.

  The vehicular lamp 10 is a lamp unit that is used in a state of being incorporated as a part of a headlamp. In the state of being incorporated in a headlamp, the optical axis Ax of the projection lens 12 is relative to the vehicle longitudinal direction. It arrange | positions in the state extended in the downward direction about 0.5-0.6 degree.

  The projection lens 12 is a plano-convex aspheric lens having a convex front surface and a flat rear surface, and a light source image formed on the rear focal plane, which is a focal plane including the rear focal point F, as a reverse image in front of the lamp. It is designed to project onto a virtual vertical screen. The projection lens 12 is supported by the lens holder 32 at the outer peripheral flange portion. The lens holder 32 is supported by the base member 20.

  The light emitting element 14 is a white light emitting diode and has a light emitting surface 14a having a horizontally long rectangular shape. The light emitting element 14 is arranged with its light emitting surface 14a facing upward below the optical axis Ax. The light emitting element 14 is supported by the base member 20.

  The reflector 16 includes an upper reflector 16A that is located above the horizontal plane that includes the optical axis Ax, and a lower reflector 16B that is located below the horizontal plane that includes the optical axis Ax.

  The upper reflector 16 </ b> A has a reflective surface 16 </ b> Aa that is a substantially elliptical curved surface with the light emission center of the light emitting element 14 as the first focal point.

  The reflecting surface 16Aa is set to have an elliptical shape in which the vertical cross-sectional shape along the major axis has a second focal point located slightly in front of the rear focal point F, and the eccentricity is a horizontal cross-section from the vertical cross-section. It is set to gradually increase toward As a result, the upper reflector 16A converges the light from the light emitting element 14 to a point located slightly in front of the rear focal point F in the vertical section, and considerably forwards the convergence position in the horizontal section. It is designed to move.

  The lower reflector 16B is configured by a substantially elliptical curved surface whose reflecting surface 16Ba has a light emission center of the light emitting element 14 as a first focal point.

  The reflecting surface 16Ba has an elliptical shape in which the vertical cross-sectional shape along the major axis has a second focal point located slightly in front of the rear focal point F, and the eccentricity is a horizontal cross-section from the vertical cross-section. It is set to gradually increase toward However, the amount of increase in the eccentricity from the vertical cross section toward the horizontal cross section is set to a smaller value than in the case of the reflecting surface 16Aa of the upper reflector 16A. As a result, the lower reflector 16B converges the light from the light emitting element 14 to a point located slightly forward of the rear focal point F in the vertical cross section, and moves the convergence position slightly forward in the horizontal cross section. It is designed to move.

  The reflection surface 16Aa of the upper reflector 16A and the reflection surface 16Ba of the lower reflector 16B are formed as continuous curves in the vertical plane including the optical axis Ax. And these upper reflector 16A and lower reflector 16B are assembled | attached in the state mutually contact | abutted on the horizontal surface containing the optical axis Ax.

  A lower end surface of the upper reflector 16A is formed to extend along a horizontal plane including the optical axis Ax. On the other hand, the upper end surface of the lower reflector 16B has a rear end portion located on a horizontal plane including the optical axis Ax, and is formed to extend obliquely downward from the rear end portion toward the left and right front end portions. .

  The lower reflector 16B is supported by the base member 20 at the lower end surface thereof. Further, the upper reflector 16A is supported by the base member 20 at the lower end surfaces of both left and right end portions thereof.

  The movable shade 18 is rotatably supported by the shade holder 28 via a rotation pin 26 extending in the left-right direction below the optical axis Ax. The shade holder 28 is supported by the base member 20. The pivot pin 26 is located at the front end of the movable shade 18. The movable shade 18 is formed to extend obliquely upward from the front end portion thereof toward the rear, and the upper end edge 18a is formed in a step difference between the left and right sides.

  The movable shade 18 is driven by an actuator 30 supported by the base member 20 to release a light shielding position (a position indicated by a solid line in FIGS. 2 and 3) and a light shielding release rotated from the light shielding position downward by a predetermined angle. A position (a position indicated by a two-dot chain line in FIGS. 2 and 3) can be taken. The actuator 30 is driven when a beam changeover switch (not shown) is operated.

  When the movable shade 18 is in the light-shielding position, the upper end edge 18a of the movable shade 18 is disposed so as to extend in the horizontal direction so as to pass through the rear focal point F of the projection lens 12, and thereby the light emitting element reflected by the reflector 16 A part of the light from 14 is shielded. On the other hand, when the movable shade 18 is moved to the light shielding release position, the upper end edge 18a thereof is displaced to some extent below the rear focal point F of the projection lens 12, whereby the light from the light emitting element 14 reflected by the reflector 16 is reflected. The shading is canceled.

  The first sub reflectors 22L and 22R are disposed in front of the reflector 16, and are configured to reflect the light from the light emitting element 14 backward. On the other hand, the second sub-reflectors 24L and 24R are disposed behind the rear focal point F of the projection lens 12, and reflect the reflected light from the first sub-reflectors 22L and 22R toward the projection lens 12. It is configured.

  In this case, the first sub reflectors 22L and 22R and the second sub reflectors 24L and 24R are arranged in pairs on the left and right sides with respect to the optical axis Ax. The reflected light from the left first sub-reflector 22L is reflected by the left second sub-reflector 24L, and the reflected light from the right first sub-reflector 22R is reflected by the right second sub-reflector 24R. It is configured.

  3 shows the optical paths of the reflected light from the upper reflector 16A and the lower reflector 16B. In FIG. 4, the first sub-reflectors 22L and 22R and the second sub-reflectors 24L and 24R are shown. The optical path of the twice reflected light is shown.

  The pair of left and right first sub-reflectors 22L and 22R are arranged in a symmetrical relationship in a state of being adjacent to each other with a vertical plane including the optical axis Ax interposed therebetween. The reflection surfaces 22La and 22Ra of the first sub-reflectors 22L and 22R are formed in an elliptical shape, and light from the light emission center of the light-emitting element 14 is positioned in the vicinity of the front of the second sub-reflectors 24L and 24R. It converges at points AL and AR. Each of the first sub reflectors 22L and 22R is supported by the base member 20 via a support member (not shown).

  On the other hand, the pair of left and right second sub-reflectors 24L and 24R are disposed in a symmetric positional relationship at positions away from the optical axis Ax on the left and right sides. The reflection surfaces 24La and 24Ra of the second sub-reflectors 24L and 24R are formed in an elliptical shape, and light from the light emission center of the light-emitting element 14 reflected by the second sub-reflectors 24L and 24R (that is, the point AL). , The light converged on AR) is converged at a position slightly ahead of the upper end edge 18a of the movable shade 18 and away from the optical axis Ax on the left and right sides.

  Each of these second sub reflectors 24L, 24R is arranged so as to be positioned between the upper end surface of the lower reflector 16B and the lower end surface of the upper reflector 16A. At this time, each of the second sub reflectors 24L and 24R is formed by integral molding with the lower reflector 16B.

  FIG. 6 is a perspective view showing a light distribution pattern formed on a virtual vertical screen arranged at a position 25 m ahead of the lamp by light irradiated forward from the vehicular lamp 10. ) Shows the low beam distribution pattern PL, and FIG. 5B shows the high beam distribution pattern PH.

  The low beam light distribution pattern PL is formed when the movable shade 18 is in the light shielding position, while the high beam light distribution pattern PH is formed when the movable shade 18 is in the light shielding release position. .

  The low beam light distribution pattern PL shown in FIG. 6A is a left light distribution light beam distribution pattern, and has upper and lower cut-off lines CL1 and CL2 at its upper edge. The cut-off lines CL1 and CL2 extend in the horizontal direction at the left and right steps with the VV line passing through the HV, which is a vanishing point in the front direction of the lamp, in the vertical direction, and are on the right side of the VV line. The opposite lane side portion is formed as a lower cut-off line CL1, and the own lane side portion on the left side of the VV line is formed as an upper cut-off line CL2 that rises from the lower cut-off line CL1 through an inclined portion. Is formed.

  The low beam light distribution pattern PL is obtained by using the projection lens 12 to generate a light source image of the light emitting element 14 formed on the rear focal plane of the projection lens 12 by the light from the light emitting element 14 reflected by the reflector 16. The cut-off lines CL1 and CL2 are formed as a reverse projection image of the upper edge 18a of the movable shade 18.

  In this low beam distribution pattern PL, the elbow point E, which is the intersection of the lower cut-off line CL1 and the VV line, is located about 0.5 to 0.6 ° below HV. This is because the optical axis Ax extends in a downward direction by about 0.5 to 0.6 ° with respect to the vehicle longitudinal direction. In the low beam distribution pattern PL, a high luminous intensity region (hot zone) HZL is formed so as to surround the elbow point E.

  In the low beam light distribution pattern PL, a pair of additional light distribution patterns PaL and PaR are additionally formed on both the left and right sides of the high luminous intensity region HZL (this will be described later).

  On the other hand, the high-beam light distribution pattern PH shown in FIG. 5B has been cut off from the reflected light from the reflector 16 by the movable shade 18, so that the cut-off line CL1 is lower than the low-beam light distribution pattern PL. , CL2 is formed so as to expand upward.

  At this time, in the high beam light distribution pattern PH, a high luminous intensity region HZH is formed around HV. Most of the high luminous intensity region HZH is formed by the reflected light from the lower reflector 16B having a high concentration.

  In the high beam light distribution pattern PH, a pair of additional light distribution patterns PaL and PaR are additionally formed on the left and right sides of the high light intensity region HZH.

  The left additional light distribution pattern PaL is a light distribution pattern formed by light from the light emitting elements 14 sequentially reflected by the right first sub-reflector 22R and the right second sub-reflector 24R. It is formed so as to straddle the HH line passing in the direction vertically and partially overlap the left end portion of the high luminous intensity region HZH.

  On the other hand, the additional light distribution pattern PaR on the right side is a light distribution pattern formed by light from the light emitting elements 14 sequentially reflected by the left first sub-reflector 22L and the left second sub-reflector 24L. It is formed so as to straddle the line vertically and partially overlap the right end portion of the high luminous intensity region HZH.

  In the high beam light distribution pattern PH, the pair of left and right additional light distribution patterns PaL and PaR expands the high luminous intensity region HZH to the left and right sides, thereby increasing the lateral visibility of the distant place. ing.

  In the low-beam light distribution pattern PL shown in FIG. 6A, these one pair of left and right additional light distribution patterns PaL and PaR are formed only in their lower regions by the cut-off lines CL1 and CL2. Also in this low beam light distribution pattern PL, the pair of left and right additional light distribution patterns PaL and PaR expands the high luminous intensity region HZL to the left and right sides, thereby improving the lateral visibility of the distant place. ing.

  Next, the effect of this embodiment is demonstrated.

  The vehicular lamp 10 according to the present embodiment is configured as a projector-type lamp having a movable shade 18 as a cut-off forming member, but in front of the reflector 16 is a light source element 14 as a light source. First sub-reflectors 22L and 22R that reflect light rearward are arranged, and the reflected light from the first sub-reflectors 22L and 22R is arranged behind the rear focal point F of the projection lens 12. Since the second sub-reflectors 24L and 24R that reflect toward the projection lens 12 are arranged, the following operational effects can be obtained.

  That is, by reflecting the reflected light from the first sub reflectors 22L and 22R toward the projection lens 12 by the second sub reflectors 24L and 24R, the first sub reflectors 22L and 22R and the second sub reflector 24L are configured. , 24R can be used as a dedicated light control member for forming the additional light distribution patterns PaL, PaR. Therefore, it is possible to increase the degree of freedom of the formation position of the additional light distribution patterns PaL and PaR or the size and shape thereof, thereby effectively reinforcing the brightness of the low beam light distribution pattern PL and the high beam light distribution pattern PH. can do.

  At this time, in the present embodiment, since the reflected light from the second sub-reflectors 24L and 24R is emitted forward through the projection lens 12, the first sub-reflectors 22L and 22R and the second sub-reflector 24L and 24R can be arranged in a compact layout.

  As described above, according to the present embodiment, in the projector-type vehicular lamp 10 including the cut-off forming member, the brightness of the low-beam light distribution pattern PL and the high-beam light distribution pattern PH is effectively achieved by a compact lamp configuration. The additional light distribution patterns PaL and PaR that can be reinforced can be formed.

  At this time, in the present embodiment, the first sub-reflectors 22L and 22R and the second sub-reflectors 24L and 24R are arranged in pairs on the left and right sides with respect to the optical axis Ax of the projection lens 12, and the left first The reflected light from the sub-reflector 22L is reflected by the left second sub-reflector 24L, and the reflected light from the right first sub-reflector 22R is reflected by the right second sub-reflector 24R. The following effects can be obtained.

  That is, by doing so, the reflected light from the second sub-reflectors 24L and 24R can be efficiently incident on the projection lens 12, and the additional light distribution patterns PaL and PaR are formed in two places on the left and right. be able to. As a result, the degree of freedom of the formation position and shape of the additional light distribution patterns PaL and PaR can be further increased, thereby further effectively enhancing the brightness of the low beam light distribution pattern PL and the high beam light distribution pattern PH. can do.

  Further, in the present embodiment, the movable shade 18 as the cut-off forming member is configured to be able to adopt a light shielding position for shielding a part of the reflected light from the reflector 16 and a light shielding release position for releasing the light shielding. Therefore, the brightness of both the low beam light distribution pattern PL and the high beam light distribution pattern PH can be effectively reinforced.

  Further, in the present embodiment, the reflector 16 includes an upper reflector 16A and a lower reflector 16B. Therefore, the reflection surface shapes of the upper reflector 16A and the lower reflector 16B are set to the low beam distribution pattern PL and the high beam. It is possible to easily set the shape suitable for forming the light distribution pattern PH.

  In addition, in the present embodiment, since the second sub reflectors 24L and 24R are formed by integral molding with the lower reflector 16B, the following operational effects can be obtained.

  That is, the lower reflector 16B is configured to increase the concentration of the reflected light in order to increase the central luminous intensity of the high beam light distribution pattern PH, and its left and right width is narrower than the left and right width of the upper reflector 16A. It has become. Therefore, the second sub reflectors 24L and 24R can be easily formed by integral molding with the lower reflector 16B. By adopting such a configuration, it is possible to provide the second sub reflectors 24L and 24R while keeping the lamp configuration compact and suppressing an increase in the number of parts.

  In the above embodiment, it has been described that the upper edge 18a is disposed so as to pass through the rear focal point F of the projection lens 12 when the movable shade 18 is in the light shielding position. It is also possible to adopt a configuration in which it is arranged so as to pass through the vicinity of (for example, the vicinity of the upper side or the lower side of the rear focal point F).

  In the above-described embodiment, the vehicular lamp 10 is configured to form the left light distribution low beam light distribution pattern PL, but is configured to form the right light distribution low beam light distribution pattern. Even in the case where the light distribution pattern having only the horizontal cut-off line is formed at the upper end portion, the same effect can be obtained by adopting the same configuration as that of the above embodiment. .

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

  FIGS. 7 and 8 are views similar to FIGS. 2 and 4 showing the vehicular lamp 110 according to this modification.

  As shown in these figures, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the pair of left and right second sub-reflectors 124L and 124R is different from that of the above embodiment. ing.

  That is, the second sub-reflectors 124L and 124R of the present modification are also arranged at substantially the same positions as the second sub-reflectors 24L and 24R of the above embodiment, and the reflected light from the left first sub-reflector 22L The light is reflected by the two sub-reflectors 124L, and the reflected light from the right first sub-reflector 22R is reflected by the right second sub-reflector 124R.

  However, the reflecting surfaces 124La and 124Ra of the second sub-reflectors 124L and 124R respectively reflect the reflected light from the first sub-reflectors 22L and 22R to the reflecting surfaces 24La and 24R of the second sub-reflectors 24L and 24R of the above embodiment. The light is reflected upward from the case of 24Ra, and passes between the movable shade 18 at the light shielding position and the first sub reflectors 22L and 22R to reach the projection lens 12.

  Further, the reflecting surfaces 124La and 124Ra of the second sub-reflectors 124L and 124R convert the reflected light from the first sub-reflectors 22L and 22R to the reflecting surfaces 24La and 24R of the second sub-reflectors 24L and 24R of the above embodiment, respectively. Reflection is performed with a larger diffusion angle than in the case of 24Ra.

  FIG. 9 is a view similar to FIG. 6 that shows a perspective view of the light distribution pattern formed on the virtual vertical screen by the light emitted forward from the vehicular lamp 110.

  In the low beam light distribution pattern PL shown in FIG. 9A, a pair of left and right additional light distribution patterns PbL and PbR is formed as a light distribution pattern that spreads relatively greatly below the cutoff lines CL1 and CL2. Thus, the brightness of the left and right ends of the low beam light distribution pattern PL is reinforced to enhance the visibility of the shoulder portion of the road ahead of the vehicle.

  Also in the high beam light distribution pattern PH shown in FIG. 9B, the visibility of the shoulder portion of the road ahead of the vehicle is enhanced by a pair of left and right additional light distribution patterns PbL and PbR.

  Even when the configuration of this modification is adopted, the additional light distribution patterns PbL and PbR that can effectively reinforce the brightness of the low beam distribution pattern PL and the high beam distribution pattern PH are formed by a compact lamp configuration. can do.

  In addition, the numerical value shown as a specification in the said embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

  The invention of the present application is not limited to the configuration described in the above-described embodiment and its modifications, and a configuration with various other changes can be adopted.

DESCRIPTION OF SYMBOLS 10,110 Vehicle lamp 12 Projection lens 14 Light emitting element (light source)
14a Light emitting surface 16 Reflector 16A Upper reflector 16Aa, 16Ba, 22La, 22Ra, 24La, 24Ra, 124La, 124Ra Reflective surface 16B Lower reflector 18 Movable shade (cut-off forming member)
18a Upper edge 20 Base member 22L, 22R First sub reflector 24L, 24R, 124L, 124R Second sub reflector 26 Rotating pin 28 Shade holder 30 Actuator 32 Lens holder AL, AR point Ax Optical axis CL1 Lower cut off line CL2 Upper cut Offline E Elbow point F Rear focus HZH, HZL High intensity region PH Light distribution pattern for high beam PL Light distribution pattern for low beam PaL, PaR Additional light distribution pattern

Claims (6)

In a vehicular lamp comprising: a projection lens; a light source disposed behind the rear focus of the projection lens; and a reflector that reflects light from the light source toward the projection lens.
A first sub-reflector that reflects light from the light source toward the rear is arranged in front of the reflector and in front of the rear focal point, and
A vehicular lamp, wherein a second sub-reflector that reflects reflected light from the first sub-reflector toward the projection lens is disposed behind the rear focal point. The first and second sub-reflectors are arranged in pairs on the left and right sides with respect to the optical axis of the projection lens,
Reflected light from the left first sub-reflector is reflected by the left second sub-reflector, and reflected light from the right first sub-reflector is reflected by the right second sub-reflector. The vehicular lamp according to claim 1, wherein:   The vehicular lamp according to claim 1 or 2, wherein the second sub-reflector is formed by integral molding with the reflector. A cut-off forming member is disposed between the light source and the projection lens,
The cut-off forming member is configured to be able to take a light shielding position for shielding a part of the reflected light from the reflector and a light shielding release position for releasing the light shielding. 3. The vehicular lamp according to any one of 3. The reflector includes an upper reflector and a lower reflector,
The vehicular lamp according to claim 4, wherein the second sub-reflector is formed by integral molding with the lower reflector. The vehicular lamp according to any one of claims 1 to 5, wherein the second sub-reflector is disposed in front of the light source.

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