JP2012119276A - Vehicle lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle lamp capable of forming a light distribution pattern satisfying luminous intensity required by the law even if it is down-sized by making smaller a size of a reflection face.SOLUTION: The vehicle lamp is provided with a semiconductor light emitting element 22 arranged below a projector optical system 20 in a posture wherein an irradiation direction may be almost perpendicularly downward, a first reflection face 32 which is arranged so that at least the light irradiated to a backward side of a vehicle from the semiconductor light emitting element 22 may enter and is structured so that the reflected light may irradiate frontward of the vehicle, a second reflection face 33 including a reflection region 33a arranged in an upper region than the semiconductor light emitting element 22 out of regions along a contour of a projection lens 21 in a front view, and a third reflection face 34 which is arranged in a more front side of the vehicle than the first reflection face 32 and is structured so that the light reflected from at least the light emitting element 22 and irradiated to the front side of the vehicle may enter the second reflection face 33.

Description

  The present invention relates to a vehicular lamp, and in particular, a projector optical system configured to illuminate the front of a vehicle with light emitted from a projection lens, and the front of the vehicle with light reflected from a reflecting surface without passing through the projection lens. The present invention relates to a vehicular lamp combining a parabolic optical system configured to illuminate.

  Conventionally, in the field of vehicular lamps, a projector optical system configured to illuminate the front of the vehicle with light emitted from the projection lens, and illuminates the front of the vehicle with light reflected from the reflecting surface without passing through the projection lens. There has been proposed a vehicular lamp that combines a parabolic optical system configured as described above (see, for example, Patent Document 1).

  As shown in FIGS. 12A and 12B, the vehicular lamp 200 described in Patent Document 1 has a spot-like light distribution pattern PA (see FIG. 13) by light emitted from the projection lens 211. Projector optical system 210 configured to form, parabolic optical system 220 configured to form a light distribution pattern PB diffused in the left-right direction by light reflected from the reflecting surface 221 without passing through the projection lens 211, etc. It has.

Japanese Patent No. 4274107

  However, in the vehicular lamp 200 described in Patent Document 1, in order to form a light distribution pattern that satisfies the light intensity required by law, the size of the reflecting surface 221 constituting the parabolic optical system 220 is increased due to its structure. Inevitably, there is a problem that the vehicular lamp 220 is increased in size to the extent that it is against the request for downsizing the vehicular lamp.

  Further, in the vehicle lamp 200 described in Patent Document 1, the projection lens 211 constituting the projector optical system 220 and the reflecting surface 221 (shaded area in FIG. 12B) constituting the parabolic optical system 220 are caused to emit light. However, there is a problem that the projection lens 211 and the reflection surface 221 are separately arranged on the upper and lower sides and give an impression that the light is emitted individually without a sense of unity and unity.

  The present invention has been made in view of such circumstances, and firstly, compared with the prior art, even if the size of the reflecting surface constituting the parabolic optical system is reduced, the luminous intensity required by the regulations is reduced. It aims at providing the vehicular lamp which can form the light distribution pattern to fill. A second object of the present invention is to provide a vehicular lamp capable of giving an impression that the projection lens constituting the projector optical system and the reflecting surface constituting the parabola optical system emit light integrally.

  In order to achieve the above object, the invention according to claim 1 is a projector optical system configured to illuminate the front of the vehicle with light emitted from a projection lens, and has a posture in which the irradiation direction is substantially vertically downward. A semiconductor light-emitting element disposed below the projector optical system and at least light radiated from the semiconductor light-emitting element to the vehicle rear side is disposed, and the reflected light illuminates the front of the vehicle A first reflecting surface, a second reflecting surface including a reflecting region disposed in a region above the semiconductor light emitting device in a region along the outline of the projection lens in a front view, and at least from the semiconductor light emitting device It is arranged so that the light irradiated on the vehicle front side is incident on the vehicle front side from the first reflecting surface, and the reflected light is incident on the second reflecting surface. A third reflecting surface which is provided with a second reflecting surface, characterized in that the reflected light is configured to illuminate the front of the vehicle.

  According to the first aspect of the present invention, the action of the reflection area and the third reflection surface arranged in the area above the semiconductor light emitting element in the area along the outline of the projection lens in the front view (that is, twice reflection). 12), the region indicated by the symbol A in FIG. 12B that has not been used as a conventional reflecting surface (in claim 1, the region above the semiconductor light emitting element in the region along the outline of the projection lens in front view) Can be used as a reflective surface for illuminating the front of the vehicle, so that a light distribution pattern that satisfies the light intensity required by the law can be achieved even if the size of the first reflective surface is reduced compared to the conventional case. A vehicular lamp that can be formed can be configured.

  According to the first aspect of the present invention, conventional light emission is achieved by the action of the reflective region and the third reflective surface disposed in the region above the semiconductor light emitting element in the region along the outline of the projection lens in front view. Since the region indicated by the symbol A in FIG. 12B (that is, the region between the projection lens and the first reflecting surface in the front view) can be caused to emit light. It is possible to configure a vehicular lamp capable of giving an impression that the projection lens constituting the projector optical system and the first reflecting surface constituting the parabolic optical system are connected to emit light integrally. It becomes.

  The invention according to claim 2 is the invention according to claim 1, wherein the projection lens is circular or substantially circular in a front view, and the first reflection surface and the second reflection surface are in the front view. The contour of the projection lens is inscribed or substantially inscribed, and is arranged in a crescent-shaped region surrounded by a circle having a larger diameter than the contour of the projection lens or an approximate circle and the contour of the projection lens. To do.

  According to the second aspect of the present invention, the first reflecting surface and the second reflecting surface are larger in diameter than the contour of the projection lens in which the contour of the projection lens is inscribed (or substantially inscribed) in front view. By arranging it in a crescent-shaped area surrounded by a circle (or almost circle) and the outline of the projection lens, the diameter of the light emitting area of the entire vehicular lamp is minimized while ensuring the same or better brightness Can be realized.

  According to a third aspect of the present invention, in the invention of the second aspect, the large-diameter circle or a substantially circle and the contour of the projection lens are inscribed or substantially inscribed at or near the top in the vertical direction. The crescent-shaped region is formed in a region from the left and right sides of the projection lens to the lower side when viewed from the front, and the first reflecting surface is disposed below the projection lens when viewed from the front in the crescent-shaped region. The second reflecting surface is arranged on one side or both sides of the first reflecting surface in a front view of the crescent-shaped region.

  According to the invention described in claim 3, by arranging the first reflecting surface and the second reflecting surface in a region (a crescent-shaped region) from the left and right sides of the projection lens to the lower side in a front view, compared to the conventional case, It is possible to minimize the diameter of the light emitting area of the entire vehicle lamp while ensuring the same or higher brightness.

  According to the invention described in claim 3, the first reflecting surface and the second reflecting surface are arranged in a region (a crescent-shaped region) extending from the left and right sides of the projection lens to the lower side in a front view. It becomes possible to constitute the vehicular lamp.

  According to a fourth aspect of the present invention, in the invention according to the second or third aspect, an inter-axis distance between the center of the large-diameter circle or substantially circle and the center of the outline of the projection lens is set to 5 mm or more. It is characterized by being.

  According to invention of Claim 4, compared with the former, even if it reduces in size by reducing the size of a 1st reflective surface, the vehicle lamp which can form the light distribution pattern which satisfy | fills the light intensity which a law requires | requires Can be configured.

  The invention according to claim 5 is the invention according to claim 1, wherein the projection lens is circular or substantially circular in a front view, and the first reflecting surface and the second reflecting surface are in the front view. It is arranged in a rectangular area including the projection lens.

  According to the fifth aspect of the present invention, the first reflecting surface and the second reflecting surface are arranged in a rectangular region including the projection lens in a front view, whereby a vehicular lamp having a new appearance can be configured. Become.

  According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the third reflecting surface is configured so that reflected light emitted from the first reflecting surface to the front of the vehicle does not interfere. It is arrange | positioned under the said 1st reflective surface by the front view, It is characterized by the above-mentioned.

  According to the sixth aspect of the present invention, it is possible to prevent the reflected light irradiated from the first reflecting surface to the front of the vehicle from interfering with the third reflecting surface and being unable to distribute light in the target direction. It becomes possible.

  A seventh aspect of the present invention is the projector according to any one of the first to sixth aspects, wherein the projector optical system is a spot on a virtual vertical screen in which the light emitted from the projection lens faces the front end of the vehicle. The first reflecting surface and the second reflecting surface are each configured such that reflected light radiated in front of the vehicle is diffused in the left-right direction on the virtual vertical screen. It is configured to form an optical pattern.

  According to the seventh aspect of the present invention, a light distribution pattern (for example, a spot-like light distribution pattern and the like that satisfies the light intensity required by the law, even if the first reflecting surface is reduced in size by reducing the size of the first reflecting surface as compared with the conventional case. It is possible to configure a vehicular lamp that can form a low beam light distribution pattern including a light distribution pattern diffused in the left-right direction.

  The invention according to an eighth aspect is the projector according to any one of the first to sixth aspects, wherein the projector optical system is a spot on a virtual vertical screen in which the light emitted from the projection lens faces the front end of the vehicle. The first reflection surface and the second reflection surface are respectively configured such that the reflected light irradiated to the front of the vehicle travels in substantially the same direction as the optical axis of the projection lens. It is comprised so that it may do.

  According to the invention described in claim 8, compared with the prior art, even if the first reflecting surface is reduced in size, it is possible to form a predetermined light distribution pattern that satisfies the light intensity required by the law. A lamp can be configured.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein the first reflecting surface and the second reflecting surface are in front of the first reflecting surface and the second reflecting surface. A lens part through which reflected light radiated from the front of the vehicle passes is arranged. In the lens part, the reflected light that passes through the lens part is diffused in the left-right direction, and the left-right direction on the virtual vertical screen A lens cut for forming a light distribution pattern diffused in the light is formed.

  According to the ninth aspect of the invention, due to the action of the lens portion, the reflected light emitted from the first reflective surface and the second reflective surface to the front of the vehicle interferes with a lamp component such as an extension, It becomes possible to prevent the light from being distributed in the direction of.

  According to the present invention, firstly, it is possible to form a light distribution pattern that satisfies the light intensity required by the law, even if the size is reduced by reducing the size of the reflecting surface that constitutes the parabolic optical system, as compared with the prior art. It becomes possible to provide a vehicular lamp. Second, it is possible to provide a vehicular lamp that can give an impression that the projection lens constituting the projector optical system and the reflecting surface constituting the parabolic optical system emit light integrally. .

BRIEF DESCRIPTION OF THE DRAWINGS (a) Top view of the vehicle lamp 10 which is one Embodiment of this invention, (b) Front view, (c) It is a perspective view. It is a longitudinal cross-sectional view of the vehicle lamp 10 which is one Embodiment of this invention. 3 is a schematic diagram for explaining an irradiation range of a semiconductor light emitting element 31. FIG. (A) Top view (optical path diagram), (b) front view (optical path diagram), (c) perspective view, (d) longitudinal sectional view (optical path diagram) of a vehicular lamp 10 according to an embodiment of the present invention is there. It is an example of the light distribution pattern P for low beams formed on the virtual vertical screen facing the vehicle front end part by the vehicle lamp 10. It is a front view of the vehicular lamp 10 which is one Embodiment of this invention. It is a figure for demonstrating that the reflected light irradiated to the vehicle front from the 1st reflective surface 32 or the 2nd reflective surface 33 interferes with the lamp component 40. FIG. (A) It is a top view of the vehicular lamp 10 which is the modification 1 of this invention, (b) It is a front view, (c) It is a perspective view, (d) It is a longitudinal cross-sectional view. FIG. 6 is a diagram for explaining that the reflected light emitted from the first reflecting surface 32 and the second reflecting surface 33 to the front of the vehicle does not interfere with the lamp component 40. It is a front view of the vehicle lamp 10 which is the modification 2 of this invention. It is an example of the light distribution pattern P3 for high beams formed on the virtual vertical screen which faced the vehicle front end part with the vehicle lamp 10 (modification 4). (A) The longitudinal cross-sectional view of the conventional vehicle lamp 200, (b) It is a front view. It is an example of the light distribution pattern for low beams formed on the virtual vertical screen facing the vehicle front end part by the conventional vehicle lamp 200.

  Hereinafter, a vehicular lamp that is an embodiment of the present invention will be described with reference to the drawings.

  The vehicular lamp 10 of the present embodiment is an optical unit configured to form a low beam light distribution pattern, and is arranged on each of the left and right sides of the front portion of the vehicle to constitute a vehicular headlamp (head lamp). is doing.

  As shown in FIGS. 1A to 1C and 2, the vehicular lamp 10 includes a projector optical system 20 configured to illuminate the front of the vehicle with light emitted from the projection lens 21. A parabolic optical system 30 configured to illuminate the front of the vehicle with light reflected from the reflecting surfaces 32 and 33 without passing through the lens 21 is provided.

[Projector optical system 20]
As shown in FIG. 2, the projector optical system 20 includes a projection lens 21 disposed on an optical axis AX extending in the vehicle front-rear direction, as in the existing projector optical system. The semiconductor light emitting element 22 disposed on the rear side of the vehicle with respect to the rear focal point F of the light source 21, the reflection surface 23 that reflects the light from the semiconductor light emitting element 22 so as to concentrate near the optical axis AX, and the upper end edge of the projection lens 21. And a shade 24 disposed between the projection lens 21 and the semiconductor light emitting element 22 in a state of being located in the vicinity of the rear focal point F.

  The projection lens 21 is a plano-convex aspherical lens having a convex surface on the front side of the vehicle, a flat surface on the rear side of the vehicle, and a circular (or substantially circular) shape when viewed from the front (see FIG. 1B). The projection lens 21 is held on a lens holder or the like and disposed on the optical axis AX. The projection lens 21 projects a light source image formed on the rear focal plane as a reverse image. As a result, a light distribution pattern P1 (see FIG. 5) is formed on the virtual vertical screen facing the front end of the vehicle.

  As the semiconductor light emitting element 22, for example, an LED light source in which at least one LED chip (for example, blue LED chip) and a phosphor (for example, yellow phosphor) are combined, or at least one laser light source (for example, blue laser light is irradiated). A laser light source combining a phosphor (for example, a yellow phosphor) and the like.

  The reflective surface 23 is disposed so as to cover the upper side of the semiconductor light emitting element 22 so that light irradiated upward from the semiconductor light emitting element 22 is incident (see FIG. 1C and FIG. 2). The reflecting surface 23 is set so that the cross-sectional shape including the optical axis AX is set to be substantially elliptical, and the eccentricity is gradually increased from the vertical cross section toward the horizontal cross section. As a result, the light from the semiconductor light emitting element 22 reflected by the reflecting surface 23 is substantially converged slightly forward of the rear focal point F in the vertical section, and is substantially further forward in the horizontal section than the vertical section. Converge.

  The shade 24 is a light shielding member for shielding part of the reflected light from the reflective surface 23, and the projection lens 21, the semiconductor light emitting element 22, and the upper end edge are located in the vicinity of the rear focal point F of the projection lens 21. (See FIG. 2). The shade 24 blocks a part of the reflected light from the reflecting surface 23 to form a cut-off line CL defined by the upper edge (see FIG. 5). A part of the reflected light from the reflecting surface 23 is reflected on the upper surface of the shade 24 which has been subjected to mirror treatment such as aluminum vapor deposition, and is refracted in the road surface direction by the projection lens 21 and irradiated forward. Thereby, the light utilization efficiency is improved.

  According to the projector optical system 20 having the above configuration, the light emitted from the semiconductor light emitting element 22 is reflected by the reflecting surface 23 and condensed near the optical axis AX, and then emitted from the projection lens 21 to illuminate the front of the vehicle. To do. As a result, a spot-like light distribution pattern P1 (see FIG. 5) including the cut-off line CL defined by the shade 24 is formed on the virtual vertical screen facing the front end of the vehicle.

[Parabolic optical system 30]
As shown in FIG. 2, the parabolic optical system 30 includes a semiconductor light emitting element 31 disposed below the projector optical system 20 in an attitude in which the irradiation direction is substantially vertically downward, at least downward from the semiconductor light emitting element 31 and on the vehicle rear side ( The first reflecting surface 32 is arranged so that the light Ray1 irradiated to the rear side (see the rear region in FIG. 3) is incident and the reflected light illuminates the front of the vehicle. A second reflecting surface including a reflecting region 33a (see FIG. 1B) disposed in a region above the semiconductor light emitting element 31 in a region along the outline (exemplified by the crescent moon region A1 in FIG. 1B). 33, disposed at the front side of the vehicle from the first reflecting surface 32 so that the light Ray2 irradiated from at least the semiconductor light emitting element 31 downward and on the front side of the vehicle (refer to the front region in FIG. 3) is incident. The reflected light and a third reflecting surface 34 or the like which is configured to enter the second reflection surface 33.

  As shown in FIG. 1B, the first reflecting surface 32 and the second reflecting surface 33 are formed from the contour C2 of the projection lens 21 in which the contour C2 of the projection lens 21 is inscribed (or substantially inscribed) in a front view. Is also arranged in a crescent-shaped region A1 surrounded by a large-diameter circle C1 (or substantially circle) and the contour C2 of the projection lens 21.

  More specifically, the large-diameter circle C1 (or substantially circle) and the contour C2 of the projection lens 21 are inscribed (or substantially inscribed) at the top in the vertical direction (or in the vicinity thereof), thereby projecting in front view. A crescent-shaped region A1 is formed in a region from the left and right sides of the lens 21 to the lower side (that is, a region along the contour of the projection lens 21).

  The first reflecting surface 32 is disposed below the projection lens 21 in the crescent-shaped region A1 when viewed from the front, and the second reflecting surface 33 is the first reflecting surface 32 when viewed from the front in the crescent-shaped region A1. (See FIG. 1B). In addition, the 2nd reflective surface 33 may be arrange | positioned only at the one side of the 1st reflective surface 32 by front view among crescent moon type area | region A1.

  The inter-axis distance H between the center of the large-diameter circle C1 (or substantially circle) and the center of the contour C2 of the projection lens 21 is set to 5 mm or more (for example, 9 mm) (see FIG. 1B).

The first reflecting surface 32 is disposed so as to cover the lower side of the semiconductor light emitting element 31 so that the light Ray1 irradiated from at least the lower side of the semiconductor light emitting element 31 and the rear side of the vehicle (see the rear region in FIG. 3) is incident. (See FIG. 2). As the first reflecting surface 32, for example, (see FIG. 2) focus F ₃₂ is set to the semiconductor light emitting element 31 near, using a reflective surface of a rotating parabolic having a rotational axis extending in the optical axis AX substantially the same direction as It is possible. In the present embodiment, the first reflecting surface 32 is adjusted so as to form a light distribution pattern P2 in which the reflected light irradiated to the front of the vehicle is diffused in the left-right direction on the virtual vertical screen.

The second reflective surface 33 includes a reflective region 33a disposed in a region above the semiconductor light emitting element 31 in the crescent moon region A1 (see FIG. 1B). As the second reflecting surface 33, for example, a rotary paraboloid system in which the focal point F ₃₃ is set near the second focal point of the third reflecting surface 34 (see FIG. 2) and has a rotation axis extending in substantially the same direction as the optical axis AX. It is possible to use a reflective surface. In the present embodiment, the second reflecting surface 33 is adjusted so as to form a light distribution pattern P2 in which the reflected light irradiated to the front of the vehicle is diffused in the left-right direction on the virtual vertical screen.

The third reflecting surface 34 is arranged below the first reflecting surface 32 in front view so that the reflected light irradiated from the first reflecting surface 32 to the front of the vehicle does not interfere (see FIG. 1B). . As a result, it is possible to prevent the reflected light Ray1 irradiated from the first reflecting surface 32 to the front of the vehicle from interfering with the third reflecting surface 34 and being unable to distribute light in the target direction. As the third reflecting surface 34, for example, the first focal point F1 ₃₄ is set in the vicinity of the semiconductor light emitting element 31, and the second focal point F2 ₃₄ is set between the second reflecting surface 33 and the third reflecting surface 34 ( It is possible to use a spheroid reflection surface.

According to the parabolic optical system 30 having the above configuration, as shown in FIG. 4D, the light Ray1 irradiated downward from the semiconductor light emitting element 31 and on the vehicle rear side (see the rear region in FIG. 3) is first reflected. It is reflected by the surface 32 and illuminates the front of the vehicle. On the other hand, as shown in FIGS. 4A to 4D, the light Ray2 irradiated from the semiconductor light emitting element 31 downward and to the front side of the vehicle (see the front region in FIG. 3) is transmitted by the third reflecting surface 34. After being reflected and condensed at the second focal point F2 ₃₄ , the light is incident on the second reflecting surface 33 and reflected by the second reflecting surface 33 to illuminate the front of the vehicle. Thereby, the light distribution pattern P2 (see FIG. 5) diffused in the left-right direction is formed on the virtual vertical screen facing the front end of the vehicle. The diffused light distribution pattern P2 is superimposed on the spot-like light distribution pattern P1, thereby forming the low beam light distribution pattern P (see FIG. 5).

  According to the vehicular lamp 10 having the above configuration, the reflection region 33a (see FIG. 1B) disposed in the region above the semiconductor light emitting element 31 in the crescent moon region A1 along the outline of the projection lens 21 in front view. ) And the third reflecting surface 34 (i.e., by two reflections), the region indicated by symbol A in FIG. 12B that has not been used as a conventional reflecting surface (in this embodiment, the projection lens 21 in front view). The reflective region 33a above the semiconductor light emitting element 31 in the region along the outline of the light source can be used as a reflective surface for illuminating the front of the vehicle. Even if the size of the first reflecting surface 32 is reduced, it is possible to configure a vehicular lamp that can form a low beam light distribution pattern P that satisfies the light intensity required by law.

  Moreover, according to the vehicular lamp 10 having the above-described configuration, the reflection region 33a (see FIG. 1B) arranged in the region above the semiconductor light emitting element 31 in the crescent moon region A1 along the outline of the projection lens 21 when viewed from the front. )) And the third reflecting surface 34, the region indicated by the symbol A in FIG. 12B, which could not emit light conventionally (that is, in this embodiment, the projection lens 21 and the first reflection in the front view). Since the reflection region 33a between the surface 32 and the surface 32 (see FIG. 6) can be emitted, the projection lens 21 constituting the projector optical system 20 and the first reflection surface 32 constituting the parabolic optical system 30 are connected. Thus, it is possible to configure a vehicular lamp that can give an impression that light is emitted integrally without a boundary (see the hatched area in FIG. 6).

  Moreover, according to the vehicular lamp 10 having the above-described configuration, the first reflecting surface 32 and the second reflecting surface 33 are disposed in a region (a crescent-shaped region A1) extending from the left and right sides of the projection lens 21 to the lower side in a front view. As a result, it is possible to minimize the diameter of the light emitting region of the entire vehicular lamp 10 while ensuring a brightness equal to or higher than that in the past (see FIG. 6).

  Moreover, according to the vehicular lamp 10 having the above-described configuration, the first reflecting surface 32 and the second reflecting surface 33 are disposed in a region (a crescent-shaped region A1) extending from the left and right sides of the projection lens 21 to the lower side in a front view. This makes it possible to configure a new-looking vehicle lamp (see FIG. 6).

  Next, a modified example will be described.

[Modification 1]
As in the above embodiment, the first reflecting surface 32 and the second reflecting surface 33 are adjusted so that the light distribution pattern P2 in which the reflected light radiated to the front of the vehicle diffuses in the left-right direction on the virtual vertical screen is formed. As shown in FIG. 7, the vehicle is moved from the first reflecting surface 32 and the second reflecting surface 33 in relation to the lamp component 40 (for example, a part of the extension as a decorative member) arranged around the vehicle. The problem is that the reflected light irradiated forward interferes with the lamp component 40 and cannot distribute light in the intended direction. 7 and 9, reference numeral 41 denotes an outer lens.

  In order to prevent this, in the present modification, the reflected light Ray1 and Ray2 irradiated from the first reflecting surface 32 and the second reflecting surface 33 to the front of the vehicle are advanced in the same direction as the optical axis AX. The above adjustment is not performed for the first reflecting surface 32 and the second reflecting surface 33. Then, as shown in FIGS. 8A to 8D and FIG. 9, the vehicle comes from the first reflecting surface 32 and the second reflecting surface 33 in front of the first reflecting surface 32 and the second reflecting surface 33. A lens portion L (for example, a Fresnel lens) through which reflected light Ray1 and Ray2 irradiated forward is transmitted is disposed. The lens portion L is formed with a lens cut LC for diffusing the reflected lights Ray1 and Ray2 transmitted through the lens portion L in the left-right direction to form a light distribution pattern diffused in the left-right direction on the virtual vertical screen. ing. The lens portion L may be formed integrally with the projection lens 21 (see FIG. 8B) or may be formed separately and independently.

According to this modification, the light Ray1 irradiated from the semiconductor light emitting element 31 to the lower side and the vehicle rear side (see the rear region in FIG. 3) is reflected by the first reflecting surface 32 and is substantially in the same direction as the optical axis AX. It travels through the lens portion L and is diffused in the left-right direction by the lens cut LC to illuminate the front of the vehicle (see FIG. 9). On the other hand, the light Ray2 irradiated downward from the semiconductor light emitting element 31 and on the front side of the vehicle (see the front region in FIG. 3) is reflected by the third reflecting surface ₃₄ and condensed on the second focal point F2 ₃₄ , and then the second The light enters the reflection surface 33, is reflected by the second reflection surface 33, travels in substantially the same direction as the optical axis AX, passes through the lens portion L, and is diffused in the left-right direction by the lens cut LC to illuminate the front of the vehicle. (See FIG. 9). Thereby, the light distribution pattern P2 (see FIG. 5) diffused in the left-right direction is formed on the virtual vertical screen facing the front end of the vehicle. The diffused light distribution pattern P2 is superimposed on the spot-like light distribution pattern P1, thereby forming the low beam light distribution pattern P (see FIG. 5).

  As described above, according to the present modification, the reflected light emitted from the first reflecting surface 32 and the second reflecting surface 33 to the front of the vehicle interferes with the lamp component 40 by the action of the lens portion L. Therefore, it becomes possible to prevent the light from being distributed in the intended direction.

[Modification 2]
In the above embodiment, the first reflecting surface 32 and the second reflecting surface 33 are described as being disposed in the crescent moon region A1 (see FIG. 1B), but the present invention is not limited to this. For example, as shown in FIG. 10, the first reflecting surface 32 and the second reflecting surface 33 are in a rectangular region A2 including the projection lens 21 in a front view, or in a region of other shape (trapezoid, polygon more than a triangle, etc.). It may be arranged.

  According to the present modification, the first reflecting surface 32 and the second reflecting surface 33 are arranged in the rectangular area A2 including the projection lens 21 when viewed from the front, so that it is possible to configure a vehicular lamp having a new appearance. Become.

[Modification 3]
In the above embodiment, the projection lens 21 has been described to be circular (or substantially circular) in a front view (see FIG. 1B), but the present invention is not limited to this. For example, the projection lens 21 may have a rectangular shape or other shape in front view.

  According to this modification, it is possible to configure a vehicle lamp having a new appearance.

[Modification 4]
In the above embodiment, the projector optical system 20 forms the spot-like light distribution pattern P1 (see FIG. 5) including the cut-off line formed as a reverse projection image of the upper end edge of the shade 24. However, the present invention is not limited to this.

For example, the projector optical system 20, the vertical line V and the horizontal line high-beam light distribution pattern P3 including hot zone H _z which is formed in a region including the intersection of the H vehicle lighting unit for a high-beam forming (see FIG. 11) It may be configured as. For example, it is possible to configure a high beam projector optical system by removing the shade 24 from the projector optical system 20 shown in FIG. 2 and configuring the reflective surface 23 as a reflective surface that forms the high beam light distribution pattern P3. It is.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle lamp, 20 ... Projector optical system, 21 ... Projection lens, 22 ... Semiconductor light emitting element, 23 ... Reflective surface, 24 ... Shade, 30 ... Parabolic optical system, 31 ... Semiconductor light emitting element, 32 ... 1st reflective surface 33 ... second reflecting surface, 33a ... reflecting region, 34 ... third reflecting surface, 40 ... lamp component, A1 ... crescent moon region, A2 ... rectangular region

Claims (9)

A projector optical system configured to illuminate the front of the vehicle with light emitted from a projection lens;
A semiconductor light-emitting element disposed below the projector optical system in an attitude in which the irradiation direction is substantially vertically below;
A first reflecting surface arranged so that at least light irradiated from the semiconductor light emitting element to the vehicle rear side is incident, and the reflected light illuminates the front of the vehicle;
A second reflection surface including a reflection region disposed in a region above the semiconductor light emitting element in a region along the outline of the projection lens in front view;
Arranged so that at least light emitted from the semiconductor light emitting element to the front side of the vehicle is incident on the front side of the vehicle from the first reflecting surface, and the reflected light is incident on the second reflecting surface. A third reflecting surface,
With
The vehicular lamp, wherein the second reflecting surface is configured such that the reflected light illuminates the front of the vehicle. The projection lens is circular or substantially circular in front view,
The first reflection surface and the second reflection surface are a circle having a diameter larger than the contour of the projection lens or a contour of the projection lens, the contour of the projection lens being inscribed or substantially inscribed in a front view. The vehicular lamp according to claim 1, wherein the vehicular lamp is arranged in a crescent moon-shaped region surrounded by. The large-diameter circle or substantially circle and the outline of the projection lens are inscribed or substantially inscribed in the uppermost part in the vertical direction or in the vicinity thereof, in a region from the left and right sides of the projection lens to the lower side in a front view. A crescent-shaped area is formed,
The first reflecting surface is disposed below the projection lens in a front view of the crescent-shaped region,
3. The vehicular lamp according to claim 2, wherein the second reflecting surface is disposed on one side or both sides of the first reflecting surface in a front view in the crescent moon region.   4. The vehicular lamp according to claim 2, wherein an inter-axis distance between the center of the large-diameter circle or substantially circle and the center of the contour of the projection lens is set to 5 mm or more. The projection lens is circular or substantially circular in front view,
2. The vehicular lamp according to claim 1, wherein the first reflection surface and the second reflection surface are disposed in a rectangular region including the projection lens in a front view.   2. The third reflecting surface is disposed below the first reflecting surface in a front view so that reflected light irradiated from the first reflecting surface to the front of the vehicle does not interfere with the third reflecting surface. To 5. The vehicle lamp according to any one of 5 to 5. The projector optical system is configured to form a spot-like light distribution pattern on a virtual vertical screen in which the light emitted from the projection lens faces the front end of the vehicle.
Each of the first reflecting surface and the second reflecting surface is configured to form a light distribution pattern in which reflected light applied to the front of the vehicle is diffused in the left-right direction on the virtual vertical screen. The vehicular lamp according to any one of claims 1 to 6. The projector optical system is configured to form a spot-like light distribution pattern on a virtual vertical screen in which the light emitted from the projection lens faces the front end of the vehicle.
2. The first reflecting surface and the second reflecting surface are each configured such that reflected light irradiated in front of the vehicle travels in substantially the same direction as the optical axis of the projection lens. The vehicle lamp according to any one of 1 to 6. In front of the first reflecting surface and the second reflecting surface, a lens part through which reflected light irradiated from the first reflecting surface and the second reflecting surface to the front of the vehicle passes is disposed.
The lens portion is formed with a lens cut for diffusing reflected light that passes through the lens portion in the left-right direction to form a light distribution pattern diffused in the left-right direction on the virtual vertical screen. The vehicular lamp according to any one of claims 1 to 8, characterized in that:

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