JP2012134139A - Vehicular lighting lamp fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting lamp fitting of a projector type using a light-emitting element as a light source which enhances high enough center luminance of a high-beam light distribution pattern, even in case beam changeover of low beams and high beams is performed by movement of a mirror member.SOLUTION: The mirror member 18 is arranged to be moving between a first position where its front end edge 18a1 of an upward reflecting surface 18a passes at a rear focal point F of a projection lens 12, and a second position which is a location displaced to a lower side of the first position. Furthermore, in a front side of a reflector 16, a second reflector 36 is arranged to reflect the light from the light-emitting element 14 towards the upward reflecting surface 18a of the mirror member 18. Also, in a lower neighborhood of the mirror member 18, a second mirror member 38 is arranged to reflect the reflected light from the second reflector 36 towards the rear focal point F of the projection lens 12 or nearby the same when the mirror member 18 moves to the second position.

Description

  The present invention relates to a projector-type vehicular illumination lamp using a light emitting element as a light source.

  Conventionally, as a vehicular illumination lamp using a light emitting element such as a light emitting diode as a light source, for example, a projector-type lamp unit as described in “Patent Document 1” is known.

  That is, in the vehicular illumination lamp described in “Patent Document 1”, light from a light emitting element arranged behind the projection lens rear focal point is projected by a reflector arranged above the projection lens. It is configured to reflect toward the lens.

  At that time, in the vehicular illumination lamp described in “Patent Document 1”, a mirror member for reflecting upward a part of the reflected light from the reflector is disposed on the rear side of the projection lens. The mirror member includes a first position where the front end edge of the upward reflecting surface passes through the rear focal point of the projection lens or the vicinity thereof, and a first position displaced forward from the first position. It is the structure which can move between 2 positions.

JP 2007-80605 A

  In the vehicular illumination lamp described in the above-mentioned “Patent Document 1”, it is possible to switch between the low beam and the high beam by moving the mirror member, but from the reflector forming the low beam light distribution pattern. Therefore, there is a problem that the central luminous intensity of the high beam light distribution pattern cannot be sufficiently increased.

  The present invention has been made in view of such circumstances, and in a projector-type vehicular illumination lamp using a light emitting element as a light source, the beam switching between a low beam and a high beam is performed by moving a mirror member. Even if it is a case, it aims at providing the lighting fixture for vehicles which can fully raise the central luminous intensity of the light distribution pattern for high beams.

  The present invention achieves the above object by adopting a configuration including a predetermined second reflector and a second mirror member in addition to a reflector and a mirror member, or a configuration including a predetermined fourth and fifth reflector. It is intended to be illustrated.

That is, the vehicular illumination lamp according to the first invention of the present application is:
A projection lens; a light emitting element disposed behind the rear focal point of the projection lens; and a reflector that reflects light from the light emitting element toward the projection lens above the light emitting element. In vehicle lighting lamps,
On the rear side of the projection lens, a mirror member for reflecting a part of the reflected light from the reflector upward is disposed,
A first position where the front end edge of the upward reflecting surface of the mirror member passes through the rear focal point of the projection lens or the vicinity thereof, and a first position displaced downward from the first position. An actuator that moves between two positions,
A second reflector that reflects light from the light emitting element toward the upward reflecting surface of the mirror member at the first position is disposed on the front side of the reflector,
A second mirror member that reflects reflected light from the second reflector toward the rear focal point of the projection lens or the vicinity thereof when the mirror member moves to the second position in the vicinity of the lower part of the mirror member. Is arranged.

Moreover, the vehicular illumination lamp according to the second invention of the present application is:
A projection lens; a light emitting element disposed behind the rear focal point of the projection lens; and a reflector that reflects light from the light emitting element toward the projection lens above the light emitting element. In vehicle lighting lamps,
On the rear side of the projection lens, a mirror member for reflecting a part of the reflected light from the reflector upward is disposed,
A first position where the front end edge of the upward reflecting surface of the mirror member passes through the rear focal point of the projection lens or the vicinity thereof, and a first position displaced downward from the first position. An actuator that moves between two positions,
A fourth reflector is disposed on the front side of the reflector to reflect the light from the light emitting element so as to substantially converge to a point located behind the mirror member at the first position,
A fifth reflector that reflects the reflected light from the fourth reflector toward the rear focal point of the projection lens or the vicinity thereof when the mirror member moves to the second position on the rear side of the mirror member. It is characterized by being arranged.

  The “light-emitting element” means an element-like light source having a light-emitting chip that emits light substantially in the form of dots, and the type thereof is not particularly limited.

  The “second reflector” may be formed integrally with the reflector or may be formed separately.

  The “second position” is a position displaced downward from the first position. When the mirror member moves to the second position, in the first invention of the present application, the second mirror member is the first position. 2 The position where the reflected light from the reflector can be reflected toward the rear focal point of the projection lens or the vicinity thereof, and in the second invention of the present application, the fifth reflector projects the reflected light from the fourth reflector. The specific position is not particularly limited as long as it can be reflected toward the rear focal point of the lens or the vicinity thereof.

  The specific aspect of the movement of the mirror member by the “actuator” is not particularly limited, and for example, rotation or linear reciprocation can be employed.

  The “fourth reflector” may be formed integrally with the reflector or may be formed separately. Further, the specific position of the reflected light from the “fourth reflector” is not particularly limited as long as it is a point located behind the mirror member at the first position. .

  As shown in the above configuration, the vehicular illuminating lamp according to the present invention has a projection lens that reflects light from a light emitting element disposed behind the rear focal point of the projection lens by a reflector disposed above the projection lens. However, on the rear side of the projection lens, a mirror member for reflecting a part of the reflected light from the reflector upward is arranged, and this mirror member is The first position where the front end edge of the upward reflecting surface passes through the rear focal point of the projection lens or the vicinity thereof by the actuator, and the second position displaced downward from the first position. Therefore, the beam switching between the low beam and the high beam can be performed.

  That is, when the mirror member is at the first position, it is possible to form a low beam light distribution pattern. When the mirror member is moved to the second position, a high beam light distribution pattern can be formed. It becomes possible.

  In addition, in the vehicular illumination lamp according to the first invention of the present application, the second reflector that reflects the light from the light emitting element toward the upward reflecting surface of the mirror member at the first position on the front side of the reflector. In the vicinity of the lower part of the mirror member, when the mirror member moves to the second position, the reflected light from the second reflector is reflected toward the rear focal point of the projection lens or the vicinity thereof. Since the two mirror members are arranged, the following effects can be obtained.

  That is, the high-beam light distribution pattern formed when the mirror member moves to the second position includes the basic light distribution pattern formed by the light from the light-emitting element reflected by the reflector and reaching the projection lens, It is formed as a combined light distribution pattern with the additional light distribution pattern formed by the light from the light emitting element that is sequentially reflected by the two reflectors and the second mirror member and reaches the projection lens.

  At this time, since the additional light distribution pattern is formed by light reflected from the upward reflecting surface of the second mirror member toward the rear focal point of the projection lens or the vicinity thereof, the central luminous intensity of the high beam light distribution pattern. Can be increased.

  Thus, according to the first invention of the present application, in the projector-type vehicular illumination lamp using the light emitting element as the light source, even when the beam switching between the low beam and the high beam is performed by moving the mirror member, The central luminous intensity of the high beam light distribution pattern can be sufficiently increased.

  In the first invention of the present application, when the mirror member is in the first position, the reflected light from the second reflector that has reached the upward reflecting surface is reflected by the upward reflecting surface and then reflected on the reflector or the second reflector. Even if it reaches, the reflected light does not go to the front of the lamp. Therefore, the low beam light distribution pattern is formed by a basic light distribution pattern formed by light from the light emitting element reflected by the reflector and reaching the projection lens.

  On the other hand, a configuration in which a third reflector that reflects reflected light from the second reflector reflected by the mirror member at the first position toward the projection lens is disposed between the reflector and the second reflector. Then, the light distribution pattern for low beam is reflected by the reflector and sequentially reflected by the basic light distribution pattern formed by the light from the light emitting element that has reached the projection lens, the second reflector, the mirror member, and the third reflector. It can be formed as a combined light distribution pattern with an additional light distribution pattern formed by light from the light emitting element that has reached the projection lens.

  At this time, in order for the reflected light from the third reflector to reach the projection lens, it is necessary to pass the reflected light through a position that is somewhat away from the rear focal point of the projection lens. In such a case, the additional light distribution pattern is formed in a lower region of the basic light distribution pattern.

  In the low beam, this additional light distribution pattern can be effectively used as a light distribution pattern for irradiating the road surface in front of the vehicle brightly to a short distance region. On the other hand, if this additional light distribution pattern is formed in a high beam, the short distance area on the road surface in front of the vehicle becomes too bright, and the distance visibility is impaired. However, since this additional light distribution pattern is not formed when the mirror member moves to the second position, it is possible to prevent such a situation from occurring.

  On the other hand, in the vehicular illumination lamp according to the second invention of the present application, the light from the light emitting element is reflected on the front side of the reflector so as to be substantially converged to a point located behind the mirror member at the first position. A fourth reflector is arranged, and on the rear side of the mirror member, when the mirror member moves to the second position, the reflected light from the fourth reflector is directed toward the rear focal point of the projection lens or the vicinity thereof. Since the 5th reflector to reflect is arrange | positioned, the following effects can be obtained.

  That is, the high-beam light distribution pattern formed when the mirror member moves to the second position includes the basic light distribution pattern formed by the light from the light-emitting element reflected by the reflector and reaching the projection lens, It is formed as a combined light distribution pattern with the additional light distribution pattern formed by the light from the light emitting element that is sequentially reflected by the fourth and fifth reflectors and reaches the projection lens.

  At that time, the additional light distribution pattern is reflected by the fourth reflector and substantially converged to a point located behind the mirror member at the first position, and then reflected by the fifth reflector and reflected by the rear focal point of the projection lens or Since it is formed by light traveling toward the vicinity thereof, the central luminous intensity of the high beam light distribution pattern can be increased.

  As described above, according to the second invention of the present application, in the projector-type vehicular illumination lamp using the light emitting element as the light source, even when the beam switching between the low beam and the high beam is performed by moving the mirror member, The central luminous intensity of the high beam light distribution pattern can be sufficiently increased.

Front view showing a vehicular illumination lamp according to a first embodiment of the present invention It is II-II sectional view taken on the line of FIG. 1, Comprising: The figure which shows the said vehicle lighting device in the state in which a mirror member exists in a 1st position. The same figure as FIG. 2 which shows the said vehicle lighting device in the state in which a mirror member exists in a 2nd position. FIG. 7A is a perspective view showing a light distribution pattern formed on a virtual vertical screen disposed at a position 25 m ahead of the vehicle by light emitted forward from the vehicle lighting device, wherein FIG. Low beam light distribution pattern, FIG. 5B shows a high beam light distribution pattern. The same figure as FIG. 2 which shows 2nd Embodiment of this invention. The same figure as FIG. 3 which shows the said 2nd Embodiment The same figure as FIG. 4 which shows the effect | action of the said 2nd Embodiment.

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

  First, a first embodiment of the present invention will be described.

  FIG. 1 is a front view showing a vehicular illumination lamp 10 according to the present embodiment. 2 is a cross-sectional view taken along the line II-II in FIG.

  As shown in these drawings, the vehicular illumination lamp 10 according to the present embodiment includes a projection lens 12 disposed on an optical axis Ax extending in the vehicle front-rear direction, and a rear focal point F of the projection lens 12 behind. A light emitting element 14 disposed on the side, a reflector 16 disposed so as to cover the light emitting element 14 from above, and reflecting light from the light emitting element 14 toward the projection lens 12 toward the optical axis Ax, It is comprised as a projector-type lamp unit provided with. Further, the vehicular illumination lamp 10 has a configuration in which a mirror member 18 for reflecting a part of the reflected light from the reflector 16 upward is disposed on the rear side of the projection lens 12.

  The vehicular illumination lamp 10 is used in a state of being incorporated as a part of a vehicular headlamp, and in the state of being incorporated in a vehicular headlamp, its optical axis Ax is in the vehicle front-rear direction. It is arranged in a state extending in the downward direction by about 0.5 to 0.6 °.

  The projection lens 12 is a planoconvex aspherical lens having a convex front surface and a flat rear surface, and inverts a light source image formed on a rear focal plane that is a focal plane including the rear focal point F. An image is projected on a virtual vertical screen in front of the lamp.

  The projection lens 12 is fixed to a ring-shaped lens holder 22, and the lens holder 22 is supported by a base member 24. The base member 24 is formed so as to surround the mirror member 18 from the lower side, and the upper surface thereof is located on a horizontal plane including the optical axis Ax.

  The light-emitting element 14 is a white light-emitting diode, and includes a light-emitting chip 14a having a horizontally-long rectangular light-emitting surface and a substrate 14b that supports the light-emitting chip 14a. At that time, the light emitting chip 14a is sealed with a thin film formed to cover the light emitting surface. The light-emitting element 14 is arranged in such a manner that the light-emitting chip 14a is vertically upward on the optical axis Ax and the long-side direction thereof is aligned with the vehicle width direction. It is positioned and fixed to 24 light source support portions 24a.

  The reflecting surface 16a of the reflector 16 has a long surface that is coaxial with the optical axis Ax and is formed of a substantially elliptical curved surface having the light emission center of the light emitting element 14 as a first focal point. It is set to gradually increase toward the horizontal section. The reflecting surface 16a substantially converges the light from the light emitting element 14 at a position slightly in front of the rear focal point F of the projection lens 12 in the vertical section, and the convergence position on the rear side in the horizontal section. It is configured to be displaced considerably forward from the focal point F. The reflector 16 is fixed to the upper surface of the base member 24 at the lower end of the periphery of the reflecting surface 16a.

  The mirror member 18 is configured as a substantially flat plate-like member extending in the horizontal direction, and a downward flange portion is formed at the front end portion thereof.

  The upper surface of the mirror member 18 is configured as an upward reflecting surface 18a extending rearward from the position of the rear focal point F along the optical axis Ax. The upward reflecting surface 18a is formed by performing a mirror surface treatment such as aluminum deposition on the upper surface of the mirror member 18.

  As a result, the mirror member 18 reflects part of the reflected light from the reflecting surface 16a of the reflector 16 toward the projection lens 12 upward on the upward reflecting surface 18a and makes it enter the projection lens 12, and these are reflected as downward light. The light is emitted from the projection lens 12.

  The upward reflecting surface 18a of the mirror member 18 is formed of a horizontal plane including the optical axis Ax in a left region located on the left side of the optical axis Ax (right side in the front view of the vehicular illumination lamp 10). The right region located on the right side is configured by a horizontal plane that is one step lower than the left region through a short slope. The front edge 18a1 of the upward reflecting surface 18a is formed so as to extend along the rear focal plane of the projection lens 12.

  The mirror member 18 is configured to be able to rotate around a rotation axis Ax1 extending in the vehicle width direction. At this time, the rotation axis Ax1 is positioned below the optical axis Ax at the approximate center between the light emitting element 14 and the rear focal point F of the projection lens 12.

  A pair of lever portions 18b extending rearward and downward are formed at both ends of the mirror member 18 in the vehicle width direction. And this mirror member 18 is being fixed to the shaft member 26 extended along rotation axis Ax1 in the front-end | tip part of the pair of lever part 18b. The shaft member 26 is connected to an actuator 28 fixedly supported by the base member 24.

  The actuator 28 is driven by operating a beam changeover switch to rotate the mirror member 18 together with the shaft member 26. Then, by driving the drive unit 28, the mirror member 18 is moved to a first position where the front end edge 18a1 of the upward reflecting surface 18a passes the rear focal point F of the projection lens 12 (that is, indicated by a solid line in FIG. 2). Position) and a second position where the front end edge 18a1 is displaced downward from the rear focal point F (that is, a position indicated by a two-dot chain line in FIG. 2).

  FIG. 3 is a view similar to FIG. 2 showing the vehicular illumination lamp 10 when the mirror member 18 is in the second position.

  As shown in FIGS. 2 and 3, a second reflector 36 that reflects the light from the light emitting element 14 toward the upward reflecting surface 18 a of the mirror member 18 at the first position is disposed on the front side of the reflector 16. Has been.

  The reflection surface 36a of the second reflector 36 is symmetrical with the rear focal point F of the projection lens 12 with respect to the upward reflection surface 38a of the second mirror member 38 with respect to the light from the light emitting element 14 reflected by the reflection surface 36a. Is formed so as to converge at a point A or in the vicinity thereof.

  Further, near the lower part of the mirror member 18, when the mirror member 18 moves to the second position, the reflected light from the second reflector 36 is reflected toward the rear focal point F of the projection lens 12 or the vicinity thereof. A second mirror member 38 is disposed.

  The second mirror member 38 is configured as a flat plate member having an upward reflecting surface 38a inclined downward toward the front of the lamp, and a support portion 38b extending downward is formed at a lower end portion thereof. The second mirror member 38 is fixed to the base member 24 at the support portion 38b.

  Further, between the reflector 16 and the second reflector 36, the reflected light from the second reflector 36 reflected by the upward reflecting surface 18a of the mirror member 18 at the first position is reflected toward the projection lens 12. A third reflector 46 is arranged.

  The reflecting surface 46a of the third reflector 46 is formed so as to reflect the reflected light from the mirror member 18 reflected by the reflecting surface 46a as light close to parallel light in the vertical direction. At this time, the reflecting surface 46a of the third reflector 46 allows the reflected light from the reflecting surface 46a to reach the projection lens 12, so that the reflected light is somewhat upward from the rear focal point F of the projection lens 12. The surface shape is set so as to pass through a distant position.

  The second reflector 36 and the third reflector 46 are formed integrally with the reflector 16.

  FIG. 4 is a view perspectively showing a light distribution pattern formed on a virtual vertical screen disposed at a position 25 m ahead of the vehicle by light irradiated forward from the vehicular illumination lamp 10 according to the present embodiment. FIG. 5A shows a low beam light distribution pattern PL, and FIG. 5B shows a high beam light distribution pattern PH.

  As shown in FIG. 6A, the low beam light distribution pattern PL 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.

  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 light distribution pattern PL, a hot zone HZL which is a high luminous intensity region is formed so as to surround the elbow point E.

  The low beam light distribution pattern PL includes a basic light distribution pattern PL0 formed by light from the light emitting element 14 reflected by the reflector 16 and reaching the projection lens 12, a second reflector 36, a mirror member 18, and a third reflector. It is formed as a combined light distribution pattern with the additional light distribution pattern PLA formed by the light from the light emitting element 14 that is sequentially reflected at 46 and reaches the projection lens 12.

  The basic light distribution pattern PL0 is a light distribution pattern constituting the basic shape of the low beam light distribution pattern PL, and is 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 formed image of the light emitting element 14 is formed by projecting it as a reverse projection image on the virtual vertical screen by the projection lens 12. At this time, the cut-off lines CL1 and CL2 are formed as inverted projection images of the front end edge 18a1 of the upward reflecting surface 18a of the mirror member 18. The hot zone HZL is mainly formed by the reflected light from the upward reflecting surface 18a of the mirror member 18.

  On the other hand, the additional light distribution pattern PLA is formed as a diffused light distribution pattern that extends greatly in the left-right direction so as to overlap the basic light distribution pattern PL0 below the lower cut-off line CL1.

  The additional light distribution pattern PLA is formed in a lower region of the basic light distribution pattern PL0. This is because the reflection surface 46a of the third reflector 46 causes the reflected light to be slightly higher than the rear focal point F of the projection lens 12. This is because it is formed so as to pass a position distant from each other.

  As shown in FIG. 4B, the high beam light distribution pattern PH is formed as a combined light distribution pattern of the basic light distribution pattern PH0 and the additional light distribution pattern PHA. In the high beam light distribution pattern PH, a hot zone HZH is formed around a point near the lower portion of HV.

  The basic light distribution pattern PH0 is a light distribution pattern formed by the reflected light from the reflector 16, and the basic light distribution pattern PLA of the low beam light distribution pattern PL is extended to the upper side of the cut-off lines CL1 and CL2. It has a shape.

  The basic light distribution pattern PH0 becomes a light distribution pattern in which the basic light distribution pattern PLA is expanded to the upper side of the cutoff lines CL1 and CL2. The reflector 18 is moved to the second position when the mirror member 18 is moved to the second position. This is because a part of the reflected light from 16 is not reflected upward by the mirror member 18 and is directly incident on the projection lens like the other reflected light.

  In this basic light distribution pattern PH0, a hot zone HZH is formed around a point near the lower part of HV. At this time, in the basic light distribution pattern PH0, the central luminous intensity is lower than the central luminous intensity of the basic light distribution pattern PLA by the amount that upward reflected light from the mirror member 18 is not obtained.

  On the other hand, the additional light distribution pattern PHA is a light distribution pattern formed by light from the light emitting element 14 that is sequentially reflected by the second reflector 36 and the second mirror member 38 and reaches the projection lens 12. The additional light distribution pattern PHA is formed as a spot-shaped light distribution pattern that slightly expands in the left-right direction around a point near the lower portion of HV. This is because the second reflector 36 is symmetrical with the rear focal point F of the projection lens 12 with respect to the upward reflecting surface 38a of the second mirror member 38 with respect to the light from the light emitting element 14 reflected by the reflecting surface 36a. This is because it is configured to converge to A or its vicinity.

  The high-beam light distribution pattern PH formed in the present embodiment is such that the central light intensity of the basic light distribution pattern PH0 is equal to that of the basic light distribution pattern PLA by the amount that upward reflected light from the mirror member 18 cannot be obtained. Although the value is lower than the central luminous intensity, since the spot-like additional light distribution pattern PHA is superimposed on the high beam light distribution pattern PH as a whole, the central luminous intensity is significantly higher than that of the low beam light distribution pattern PL. It has become.

  Next, the effect of this embodiment is demonstrated.

  In the vehicular illumination lamp 10 according to the present embodiment, light from the light emitting element 14 disposed behind the rear focal point F of the projection lens 12 is reflected by the reflector 16 disposed above the projection lens 12. However, on the rear side of the projection lens 12, a mirror member 18 for reflecting a part of the reflected light from the reflector 16 upward is disposed. The mirror member 18 is displaced downward by the actuator 28 from the first position where the front end edge 18a1 of the upward reflecting surface 18a passes through the rear focal point F of the projection lens 12, and from the first position. Since it is configured to move between the second position, it is possible to switch between the low beam and the high beam.

  That is, when the mirror member 18 is in the first position, the low beam light distribution pattern PL can be formed. When the mirror member 18 is moved to the second position, the high beam light distribution pattern PH is changed. It becomes possible to form.

  At that time, in the vehicular illumination lamp 10 according to the present embodiment, the light reflected from the light emitting element 14 is reflected toward the upward reflecting surface 18a of the mirror member 18 at the first position on the front side of the reflector 16. Two reflectors 36 are disposed, and in the vicinity of the lower part of the mirror member 18, when the mirror member 18 moves to the second position, the reflected light from the second reflector 36 is reflected to the rear focal point F or the projection lens 12. Since the second mirror member 38 that reflects toward the vicinity thereof is disposed, the following operational effects can be obtained.

  That is, the high beam light distribution pattern PH formed when the mirror member 18 is moved to the second position is reflected by the reflector 16 and reaches the projection lens 12 and is formed by the basic light distribution formed by the light from the light emitting element 14. It is formed as a combined light distribution pattern of the light pattern PH0 and the additional light distribution pattern PHA formed by the light from the light emitting element 14 that is sequentially reflected by the second reflector 36 and the second mirror member 38 and reaches the projection lens 12. The Rukoto.

  At this time, the additional light distribution pattern PHA is formed by light reflected from the upward reflecting surface 38a of the second mirror member 38 toward the rear focal point F of the projection lens 12 or the vicinity thereof. The central luminous intensity of the light pattern PH can be increased.

  As described above, according to the present embodiment, the projector-type vehicular illumination lamp 10 using the light-emitting element 14 as a light source is configured to switch between a low beam and a high beam by moving the mirror member 18. The central luminous intensity of the high beam light distribution pattern PH can be sufficiently increased.

  In this embodiment, when the mirror member 18 is in the first position, the reflected light from the second reflector 36 that has reached the upward reflecting surface 38a is reflected by the upward reflecting surface 38a and then reflected by the reflector 16 and the second reflecting surface 38a. Even if the two reflectors 36 are reached, the reflected light does not become light that travels forward of the lamp.

  In the present embodiment, the third reflected light reflected from the second reflector 36 reflected by the mirror member 18 at the first position is reflected between the reflector 16 and the second reflector 36 toward the projection lens 12. Since the reflector 46 is disposed, the basic light distribution pattern PL0 formed by the light from the light emitting element 14 which has reflected the low beam light distribution pattern PL by the reflector 16 and reached the projection lens 12, and the second reflector 36. Further, it can be formed as a combined light distribution pattern with the additional light distribution pattern PLA formed by the light from the light emitting element 14 that is sequentially reflected by the mirror member 18 and the third reflector 46 and reaches the projection lens 12.

  At this time, since this additional light distribution pattern PLA is formed in the lower region of the basic light distribution pattern PL0, the light distribution pattern for irradiating the low beam light distribution pattern PL brightly on the road surface in front of the vehicle to the short distance region and can do. On the other hand, since this additional light distribution pattern PLA is not formed when the mirror member 18 moves to the second position, the short-range area on the road surface in front of the vehicle does not become too bright for the high-beam light distribution pattern PH. Can be. As a result, it is possible to prevent the distant visibility with a high beam from being impaired due to the arrangement of the third reflector 46.

  In the above-described embodiment, the case where the left-light distribution low-beam distribution pattern PL is formed as the low-beam distribution pattern has been described. By adopting the same configuration as that of the embodiment, it is possible to obtain the same effect as that of the above embodiment.

  Next, a second embodiment of the present invention will be described.

  FIGS. 5 and 6 are views similar to FIGS. 2 and 3, respectively, showing the vehicular illumination lamp 110 according to the present embodiment.

  As shown in these drawings, the basic configuration of the vehicular illumination lamp 110 is the same as that of the first embodiment, but the second reflector 36 and the third reflector of the first embodiment. It differs from the case of the said 1st Embodiment by the point provided with the 4th reflector 136 and the 5th reflector 156 instead of 46 and the 2nd mirror member 38. FIG.

  In the present embodiment, a fourth reflector 136 is disposed on the front side of the reflector 16, and a fifth reflector 156 is disposed on the rear side of the mirror member 18.

  Specifically, the reflection surface 136a of the fourth reflector 136 causes the light from the light emitting element 14 reflected by the reflection surface 136a to be at or near the point B located behind the mirror member 18 at the first position. It is formed to converge. That is, the reflecting surface 136a is formed of a spheroid having the light emission center of the light emitting element 14 as the first focal point and the point B as the second focal point. At that time, the point B is set on or near the optical axis Ax. The fourth reflector 136 is formed integrally with the reflector 16.

  The reflection surface 156a of the fifth reflector 156 is formed so as to reflect the reflected light from the fourth reflector 136 toward the rear focal point F of the projection lens 12 or the vicinity thereof. That is, the reflecting surface 156a is formed of a spheroid having the point B as the first focal point and the rear focal point F as the second focal point. The fifth reflector 156 is formed integrally with the base member 24.

  FIG. 7 is a view similar to FIG. 4 that shows a perspective view of a light distribution pattern formed on the virtual vertical screen by light emitted forward from the vehicular illumination lamp 110 according to the present embodiment.

  A low beam light distribution pattern PL shown in FIG. 4A is a light distribution pattern formed by light from the light emitting element 14 reflected by the reflector 16 and reaching the projection lens 12, and is shown in FIG. This is a light distribution pattern similar to the basic light distribution pattern PL0 in the low beam light distribution pattern PL shown.

  On the other hand, the high-beam light distribution pattern PH shown in FIG. 5B is formed as a combined light distribution pattern of the basic light distribution pattern PH0 and the additional light distribution pattern PHB. In the high beam light distribution pattern PH, a hot zone HZH is formed around a point near the lower portion of HV.

  The basic light distribution pattern PH0 is a light distribution pattern formed by the reflected light from the reflector 16, and has a shape in which the low-beam light distribution pattern PL is expanded to the upper side of the cut-off lines CL1 and CL2. .

  The additional light distribution pattern PHB is a light distribution pattern formed by light from the light emitting element 14 that is sequentially reflected by the fourth reflector 136 and the fifth reflector 156 and reaches the projection lens 12. This additional light distribution pattern PHB is formed as a spot-shaped light distribution pattern that slightly expands in the left-right direction around a point near the lower part of HV. This is because the light from the light emitting element 14 reflected by the reflecting surface 136a of the fourth reflector 136 and converged at or near the point B is reflected from the rear focal point F of the projection lens 12 by the reflecting surface 156a of the fifth reflector 156 or its This is because it is configured to reflect toward the vicinity.

  The light distribution pattern PH for high beam formed in the present embodiment is such that the central light intensity of the basic light distribution pattern PH0 is such that the upward reflected light from the mirror member 18 can no longer be obtained. However, since the spot-like additional light distribution pattern PHB is superimposed on the entire high beam light distribution pattern PH, the central light intensity is significantly higher than that of the low beam light distribution pattern PL. It has become.

  As described above, also in the present embodiment, it is possible to obtain substantially the same operational effects as in the case of the second embodiment.

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

DESCRIPTION OF SYMBOLS 10,110 Vehicle illumination lamp 12 Projection lens 14 Light emitting element 14a Light emitting chip 14b Substrate 16 Reflector 16a, 36a, 46a, 136a, 156a Reflecting surface 18 Mirror member 18a, 38a Upward reflecting surface 18a1 Front edge 18b Lever part 22 Lens holder 24 Base member 24a Light source support portion 26 Shaft member 28 Actuator 36 Second reflector 38 Second mirror member 38b Support portion 46 Third reflector 136 Fourth reflector 156 Fifth reflector A, B point Ax Optical axis Ax1 Rotating axis CL1 Lower cut-off line CL2 Upper cut-off line E Elbow point F Rear focus HZH, HZL Hot zone PH Light distribution pattern for high beam PH0, PL0 Basic light distribution pattern PHA, PHB, PLA Additional light distribution pattern PL Loby Light distribution pattern

Claims (3)

A projection lens; a light emitting element disposed behind the rear focal point of the projection lens; and a reflector that reflects light from the light emitting element toward the projection lens above the light emitting element. In vehicle lighting lamps,
On the rear side of the projection lens, a mirror member for reflecting a part of the reflected light from the reflector upward is disposed,
A first position where the front end edge of the upward reflecting surface of the mirror member passes through the rear focal point of the projection lens or the vicinity thereof, and a first position displaced downward from the first position. An actuator that moves between two positions,
A second reflector that reflects light from the light emitting element toward the upward reflecting surface of the mirror member at the first position is disposed on the front side of the reflector,
A second mirror member that reflects reflected light from the second reflector toward the rear focal point of the projection lens or the vicinity thereof when the mirror member moves to the second position in the vicinity of the lower part of the mirror member. A vehicle lighting device characterized in that is arranged.   A third reflector that reflects the reflected light from the second reflector reflected by the upward reflecting surface of the mirror member at the first position toward the projection lens between the reflector and the second reflector. The vehicular illumination lamp according to claim 1, wherein: A projection lens; a light emitting element disposed behind the rear focal point of the projection lens; and a reflector that reflects light from the light emitting element toward the projection lens above the light emitting element. In vehicle lighting lamps,
On the rear side of the projection lens, a mirror member for reflecting a part of the reflected light from the reflector upward is disposed,
A first position where the front end edge of the upward reflecting surface of the mirror member passes through the rear focal point of the projection lens or the vicinity thereof, and a first position displaced downward from the first position. An actuator that moves between two positions,
A fourth reflector is disposed on the front side of the reflector to reflect the light from the light emitting element so as to substantially converge to a point located behind the mirror member at the first position,
A fifth reflector that reflects the reflected light from the fourth reflector toward the rear focal point of the projection lens or the vicinity thereof when the mirror member moves to the second position on the rear side of the mirror member. A vehicular illumination lamp characterized by being arranged.

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