JP2017212170A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture capable of reinforcing a road surface irradiation function.SOLUTION: A vehicular lighting fixture includes: a light source 14 for low beam for emitting light L for forming a low beam light distribution pattern PL; a first array light source 16 in which a plurality of semiconductor light-emitting elements 51 are arrayed in one row; and a second array light source 17 in which a plurality of semiconductor light-emitting element 55 are arrayed in one row. The first array light source 16 emits light LA 1 for forming an additional light distribution pattern P1 for high beam, and the second array light source 17 emits light LA 2 for forming an additional light distribution pattern P2 which overlaps with both the low beam light distribution pattern PL and the additional light distribution pattern P1 for high beam on a vertical virtual screen in front of the lighting fixture.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a vehicular lamp.

In recent years, development of a vehicular lamp having an array light source in which a plurality of semiconductor light emitting elements such as LEDs (Light Emitting Diodes) are arranged in a row has been promoted.
Patent Document 1 discloses a vehicular lamp having an array light source, which is a projector-type optical system using a single projection lens (see Patent Document 1).

JP, 2006-039020, A

  However, in the lamp of Patent Document 1, there is a portion where the light distribution patterns do not overlap each other near the boundary between the high beam additional light distribution pattern and the low beam light distribution pattern, resulting in insufficient road surface irradiation. was there.

  An object of this invention is to provide the vehicle lamp which can strengthen a road surface irradiation function.

In order to achieve the above object, a vehicular lamp according to the present invention includes:
A first light source that emits light forming a light distribution pattern for low beam;
A first array light source in which a plurality of semiconductor light emitting elements are arranged in at least one row;
A second array light source in which a plurality of semiconductor light emitting elements are arranged in at least one row;
With
The first array light source emits light that forms at least a part of an additional light distribution pattern for a high beam,
The second array light source emits light that forms an additional light distribution pattern that overlaps both the low beam light distribution pattern and the high beam additional light distribution pattern on a vertical virtual screen in front of the lamp.

  According to the above configuration, for example, the width of the light emitted from the lamp is irradiated onto the road surface by the light forming the additional light distribution pattern that overlaps both the low beam light distribution pattern and the high beam additional light distribution pattern. You can spread light or irradiate light far away.

In the vehicular lamp of the present invention,
The plurality of semiconductor light emitting elements included in the first array light source can be individually turned on,
The plurality of semiconductor light emitting elements of the second array light source can be individually lit.
Of the light distribution patterns projected onto the vertical virtual screen in front of the lamp, the light distribution pattern formed by each semiconductor light emitting element of the first array light source and the distribution formed by each semiconductor light emitting element of the second array light source The light pattern may be offset in the left-right direction of the lamp.

  According to the above configuration, the light distribution pattern formed by each semiconductor light emitting element of the first array light source and the light distribution pattern formed by each semiconductor light emitting element of the second array light source are offset in the left-right direction of the lamp. . For this reason, the division | segmentation number in the light distribution pattern comprised by a 1st array light source and a 2nd array light source can be increased, or resolution | decomposability can be made high, and various light distribution patterns can be formed according to a use and a condition. .

In the vehicular lamp of the present invention,
In the lamp left-right direction, the center position of the first array light source may be arranged at a position different from the center position of the second array light source.

  According to the said structure, the area | region where light is irradiated to a road surface can be extended in the left-right direction of a lamp | ramp, or the division | segmentation number of the light distribution pattern comprised by a 1st array light source and a 2nd array light source can be increased.

In the vehicular lamp of the present invention,
With a projection lens,
The first array light source is disposed behind the projection lens;
In the first array light source, each arrangement pitch of the plurality of semiconductor light emitting elements in the left-right direction of the lamp may become denser as it approaches the rear focal point of the projection lens.

  With the above configuration, the use efficiency of the light emitted from the first array light source can be increased while the width of the light emitted from the lamp being irradiated onto the road surface can be increased, and the light can be emitted far away.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle lamp which can strengthen a road surface irradiation function can be provided.

It is the schematic diagram seen from the front of the headlamp provided with the vehicle lamp which concerns on embodiment of this invention. It is a figure which shows the vehicle lamp which concerns on embodiment of this invention, Comprising: (a) is a left side view, (b) is a front view, (c) is a right side view. It is a disassembled perspective view of the vehicle lamp which concerns on embodiment of this invention. It is sectional drawing of the vehicle lamp which concerns on embodiment of this invention. It is a perspective view of the base member in which the light source of the vehicle lamp is mounted. It is a figure explaining the structure which consists of the 1st array light source of a vehicle lamp, a 2nd array light source, and an optical member, Comprising: (a) is a front view, (b) is AA sectional drawing in (a). . It is sectional drawing which shows the optical path of the light source for low beams in a vehicle lamp. It is sectional drawing which shows the optical path of the 1st array light source in a vehicle lamp, and a 2nd array light source. It is a schematic diagram which shows in perspective the light distribution pattern formed on the virtual vertical screen arrange | positioned ahead of a lamp | ramp by the light irradiated from a vehicle lamp. It is a schematic diagram of the top view which shows the irradiation range ahead of the vehicle of the light irradiated from a vehicle lamp. It is a schematic diagram explaining how to form a light distribution pattern of an array light source in which rows of semiconductor light emitting elements are arranged in two stages. It is a perspective view of the base member in which the light source for describing the modification 1 is mounted. It is a perspective view of the base member in which the light source for describing the modification 2 is mounted. FIG. 10 is a schematic plan view of a flexible substrate for explaining a modification example 2; It is a schematic sectional drawing of the vehicle lamp for demonstrating the modification 3. FIG. It is a schematic sectional drawing of the vehicle lamp for demonstrating the modification 4. It is a schematic sectional drawing of the vehicle lamp for demonstrating the modification 5. FIG. It is the schematic diagram seen from the front of the headlamp for demonstrating the modification 6. FIG.

Hereinafter, an example of this embodiment will be described in detail with reference to the drawings.
As shown in FIG. 1, a vehicular lamp 10 according to the present embodiment constitutes a headlamp 1 for a vehicle. The headlamps 1 are provided on the left and right in the front part of the vehicle. In FIG. 1, only the headlamp 1 on the left side of the vehicle is illustrated. Each headlamp 1 is a single eye provided with one vehicular lamp 10 in this example. The vehicular lamp 10 is provided on a lamp body (not shown). A translucent cover 2 is mounted in front of the lamp body. The translucent cover 2 is attached to the lamp body to form a lamp chamber, and the vehicular lamp 10 is disposed in the lamp chamber.

  As shown in FIGS. 2 to 4, the vehicular lamp 10 includes a fixing ring 11, a projection lens 12, a lens holder 13, a low beam light source (an example of a first light source) 14, a reflector 15, An array light source 16, a second array light source 17, an optical member 18, a base member 19, a fixing member 20, and a fan 21 are provided.

  The vehicular lamp 1 is a headlamp that can selectively perform low beam irradiation and high beam irradiation, for example, and is configured as a projector-type lamp unit.

  The projection lens 12 has a convex emission surface 30 based on one arc on its front surface. The projection lens 12 has a circular shape when viewed from the front of the lamp. The projection lens 12 has a first lens part 31 that forms a first rear focal point F1, and a second lens part 32 that forms a second rear focal point F2. The projection lens 12 has a first incident surface 31 a opposite to the exit surface 30 of the first lens portion 31 and a second incident surface 32 a opposite to the exit surface 30 of the second lens portion 32.

  The projection lens 12 forms a first rear focal point F1 on the optical axis of the first incident surface 31a of the first lens unit 31, and a second rear focal point on the optical axis of the second incident surface 32a of the second lens unit 32. F2 is formed. The projection lens 12 projects a light source image formed on each focal plane including the first rear focal point F1 and the second rear focal point F2 on the virtual vertical screen in front of the lamp as an inverted image. The first rear focal point F1 and the second rear focal point F2 are arranged vertically so that the first rear focal point F1 is above the second rear focal point F2. Thus, the projection lens 12 is a multifocal lens having two rear focal points F1 and F2.

  The projection lens 12 is disposed in the front part of a lens holder 13 formed in a cylindrical shape. The fixing ring 11 is fixed to the lens holder 13 from the front side. The projection lens 12 has an outer peripheral flange portion 12 a sandwiched between the lens holder 13 and the fixing ring 11, and is thereby supported on the front portion of the lens holder 13. The lens holder 13 that supports the projection lens 12 is fixed to the base member 19. Thereby, the projection lens 12 is supported by the base member 19 via the lens holder 13.

  The base member 19 is made of a metal material having excellent thermal conductivity, such as aluminum. The base member 19 has an upper wall portion 19a formed in a horizontal plane and an inclined wall portion 19b extending obliquely downward and forward from the front end of the upper wall portion 19a. A plurality of heat dissipating fins 19c extending downward from the lower surface of the upper wall portion 19a are arranged in the front-rear direction. The fan 21 is disposed below the base member 19. The wind generated from the fan 21 is sent from below to the heat dissipating fins 19c extending downward.

  In the base member 19, the upper surface of the upper wall portion 19 a is a first surface 41, and the front surface of the inclined wall portion 19 b is a second surface 42. In the base member 19, the low beam light source 14 is disposed on the first surface 41, and the first array light source 16 and the second array light source 17 are disposed on the second surface 42.

  The low beam light source 14 is made of, for example, a white light emitting diode, and its upper surface side is a light emitting surface. The low beam light source 14 is disposed behind the projection lens 12 and emits light forming a low beam light distribution pattern in this example. The low beam light source 14 is fixed to the first surface 41 of the upper wall portion 19a of the base member 19 via the attachment 14a.

  The reflector 15 is fixed to the first surface 41 of the upper wall portion 19a of the base member 19 so as to cover the low beam light source 14 from above. The reflector 15 has a reflection surface 15 a on the inner surface side, and the reflection surface 15 a reflects the light emitted from the low beam light source 14 toward the projection lens 12. The reflection surface 15a is formed of a substantially elliptical curved surface with the light emission center of the low beam light source 14 as a focal point, and the eccentricity is set so as to gradually increase from the vertical cross section toward the horizontal cross section. .

  As shown in FIGS. 5 and 6, the first array light source 16 includes a plurality (11 in this example) of semiconductor light emitting elements 51 and a substrate 52. The first array light source 16 is disposed behind the projection lens 12. The semiconductor light emitting elements 51 are arranged in a line in the left-right direction. The arrangement of the semiconductor light emitting elements 51 may be two or more. The semiconductor light emitting element 51 is composed of, for example, a white light emitting diode, and has an emitting portion made of, for example, a square light emitting surface. In the first array light source 16, the arrangement pitch of the plurality of semiconductor light emitting elements 51 in the left-right direction of the lamp becomes denser as it approaches the first rear focal point F1 of the projection lens 12.

  The semiconductor light emitting element 51 is mounted on the substrate 52. A connector 53 is provided on the substrate 52. The connector 53 is disposed on the right side of the substrate 52 in a front view. A mating connector (not shown) provided on the power supply line is connected to the connector 53, and power is supplied from the power supply line to the semiconductor light emitting element 51. The plurality of semiconductor light emitting elements 51 included in the first array light source 16 can be individually turned on.

  The substrate 52 on which the semiconductor light emitting element 51 is mounted is supported by the second surface 42 that is the front surface of the inclined wall portion 19 b of the base member 19. The first array light source 16 is disposed at a position corresponding to the first rear focal point F <b> 1 of the projection lens 12. Note that the position corresponding to the first rear focus F1 is not limited to the position that completely coincides with the first rear focus F1, but the first rear projected on the virtual vertical screen in front of the lamp by the projection lens 12 as an inverted image. This is the position including the focal point F1 and its surroundings.

  The first array light source 16 is disposed so that the emission surface formed by the light emitting surface of the semiconductor light emitting element 51 faces obliquely forward and upward by mounting the substrate 52 on the inclined second surface 42. Further, the first array light source 16 is arranged such that the emission part of the semiconductor light emitting element 51 is arranged below the first rear focal point F1. In other words, the second surface 42 of the base member 19 is located with respect to the optical axis of the first incident surface 31a of the projection lens 12 such that the emission part of the first array light source 16 is disposed below the first rear focal point F1. The inclined surface is inclined. Furthermore, the first array light source 16 is arranged between the first rear focal point F1 of the projection lens 12 and the low beam light source 14 in the lamp front-rear direction (see FIG. 4 and the like).

  The second array light source 17 includes a plurality (11 in this example) of semiconductor light emitting elements 55 and a substrate 56. The second array light source 17 is disposed behind the projection lens 12. The semiconductor light emitting elements 55 are arranged in a line in the left-right direction. The semiconductor light emitting elements 55 may be arranged in two or more rows. The semiconductor light emitting element 55 is made of, for example, a white light emitting diode, and has, for example, an emission portion made of a square light emitting surface.

  The semiconductor light emitting element 55 is mounted on the substrate 56. A connector 57 is provided on the substrate 56. The connector 57 is disposed on the left side of the substrate 56 in a front view. The connector 57 is connected to a counterpart connector (not shown) of the power supply line, and power is supplied to the semiconductor light emitting element 55 from the power supply line. The plurality of semiconductor light emitting elements 55 included in the second array light source 17 can be individually turned on.

  The substrate 56 on which the semiconductor light emitting element 55 is mounted is supported by the second surface 42 that is the front surface of the inclined wall portion 19 b of the base member 19 via the fixing member 20. The fixing member 20 is formed in a tapered shape whose thickness dimension gradually decreases upward. The second array light source 17 supported on the second surface 42 of the base member 19 via the fixing member 20 is disposed at a position corresponding to the second rear focal point F2 of the projection lens 12. Note that the position corresponding to the second rear focal point F2 is not limited to a position that completely coincides with the second rear focal point F2, but is a second direction that is projected on the virtual vertical screen in front of the lamp by the projection lens 12 as an inverted image. This is the position including the focal point F2 and its surroundings.

  The first array light source 16 and the second array light source 17 are arranged vertically. Specifically, the first array light source 16 is disposed above the second array light source 17. Further, the second array light source 17 is fixed to the second surface 42 of the base member 19 via the fixing member 20 whose thickness dimension becomes smaller upward, so that the inclination is larger than that of the first array light source 16. Has been. As a result, the emission part made of the light emitting surface of each semiconductor light emitting element 55 of the second array light source 17 is directed upward from the emission part made of the light emitting surface of each semiconductor light emitting element 51 of the first array light source 16. That is, the emission part of each semiconductor light emitting element 51 of the first array light source 16 is directed in a direction different from the emission part of each semiconductor light emitting element 55 of the second array light source 17 in the lamp vertical direction.

  The center position of the first array light source 16 is arranged on the right side of the lamp center position in front view, and the center position of the second array light source 17 is arranged on the left side of the lamp center position in front view. Yes. Thus, the center position of the first array light source 16 is arranged at a position different from the center position of the second array light source 17 in the left-right direction of the lamp.

  The optical member 18 is a separate component from the base member 19 on which the first array light source 16 and the second array light source 17 are mounted, and the first array light source 16 and the second array light source supported by the base member 19. 17 is mounted on the front side. The optical member 18 is made of, for example, aluminum die cast or polycarbonate resin having excellent heat resistance.

  The optical member 18 has a first opening 61 and a second opening 62. The first opening 61 and the second opening 62 are formed along the width direction of the optical member 18. With the optical member 18 supported by the base member 19, the first opening 61 is disposed at a position corresponding to the first array light source 16, and the second opening 62 is a position corresponding to the second array light source 17. Placed in. Thereby, the first array light source 16 is exposed toward the front of the lamp at the first opening 61 of the optical member 18, and the second array light source 17 is forward of the lamp at the second opening 62 of the optical member 18. Exposed toward.

  In the optical member 18, the upper and lower wall surfaces forming the upper and lower edges of the first opening 61 are the first reflecting surfaces 65. The first reflecting surface 65 reflects the light emitted from the first array light source 16 toward the first incident surface 31 a of the projection lens 12. In the optical member 18, the upper and lower wall surfaces forming the upper and lower edges of the second opening 62 are the second reflecting surfaces 66. The second reflecting surface 66 reflects the light emitted from the second array light source 17 toward the second incident surface 32 a of the projection lens 12. The first reflecting surface 65 and the second reflecting surface 66 are mirror-finished by aluminum vapor deposition or the like.

  The optical member 18 has a shade portion 68 at the top thereof. The shade unit 68 functions as a shade that forms a cut-off line of a low-beam light distribution pattern by blocking part of the light from the low-beam light source 14 reflected by the reflecting surface 15a of the reflector 15. The upper surface of the shade portion 68 constitutes a reflection surface 69 that reflects a part of the light from the low beam light source 14 reflected by the reflection surface 15a of the reflector 15 upward. The reflection surface 69 is formed so as to be slightly inclined forward and downward with respect to the horizontal plane, and the reflected light is incident on the first incident surface 31 a of the projection lens 12. The reflecting surface 69 is subjected to a mirror surface treatment such as aluminum deposition.

  As shown in FIG. 7, the light L emitted from the low beam light source 14 is reflected by the reflecting surface 15 a of the reflector 15 and is incident on the first incident surface 31 a of the projection lens 12. A part of the light L reflected by the reflecting surface 15 a of the reflector 15 is reflected by the reflecting surface 69 of the optical member 18 and is incident on the first incident surface 31 a of the projection lens 12. A part of the light L reflected by the reflecting surface 15a of the reflector 15 passes near the first rear focal point F1.

  As shown in FIG. 8, the light LA <b> 1 emitted from the first array light source 16 is reflected directly or by the first reflecting surface 65 of the optical member 18 and enters the first incident surface 31 a of the projection lens 12. The light LA2 emitted from the second array light source 17 is reflected directly or by the second reflecting surface 66 of the optical member 18 and enters the second incident surface 32a of the projection lens 12.

  FIG. 9 shows a light distribution pattern projected on a virtual screen provided in the vertical direction 25 meters ahead of the lamp. As shown in FIG. 9, the light L from the low beam light source 14 incident on the first incident surface 31a of the projection lens 12 is emitted from the emission surface 30 to form a low beam light distribution pattern PL. A cut-off line CL is formed by the shade portion 68 in the low beam light distribution pattern PL.

  The light LA1 from the first array light source 16 that is incident on the first incident surface 31a of the projection lens 12 is emitted from the emission surface 30 to form an additional light distribution pattern P1. The additional light distribution pattern P1 is a light distribution pattern in which the light distribution patterns P1a of the semiconductor light emitting elements 51 of the first array light source 16 are arranged in a horizontal row. Here, the semiconductor light emitting elements 51 of the first array light source 16 become denser as the arrangement pitch in the left-right direction of the lamp approaches the first rear focal point F1 of the projection lens 12, so that the additional light distribution pattern P1 is The illuminance of the part is increased, and light is irradiated far away.

  The light LA2 from the second array light source 17 incident on the second incident surface 32a of the projection lens 12 is emitted from the emission surface 30 to form an additional light distribution pattern P2. This additional light distribution pattern P2 is a light distribution pattern in which the light distribution patterns P2a of the respective semiconductor light emitting elements 55 of the second array light source 17 are arranged in a horizontal row.

  The additional light distribution pattern P1 formed by the light LA1 from the first array light source 16 is for a high beam. The additional light distribution pattern P2 formed by the light LA2 from the second array light source 17 is the same as the low beam light distribution pattern PL formed by the light L from the low beam light source 14 on the vertical virtual screen in front of the lamp. It overlaps with both the high beam additional light distribution pattern P1 formed by the light LA1 from the array light source 16.

  Here, it is difficult for light to overlap between the low beam distribution pattern PL in which the cut-off line is formed by the shade portion 68 of the optical member 18 and the additional light distribution pattern P1 for high beam, and the light may not overlap. The amount of light may be reduced.

  On the other hand, in the vehicular lamp 10 according to the present embodiment, the low beam in which the light amount is reduced in the state in which the low beam light distribution pattern PL is formed and the additional light distribution pattern P1 which is the high beam light distribution pattern is formed. An additional light distribution pattern P2 is formed between the light distribution pattern PL and the additional light distribution pattern P1. Accordingly, the additional light distribution pattern P2 supplements the space between the low beam light distribution pattern PL and the additional light distribution pattern P1 in which the amount of light decreases.

  Among the light distribution patterns projected on the vertical virtual screen in front of the lamp, the additional light distribution pattern P1 formed by the light LA1 from each semiconductor light emitting element 51 of the first array light source 16 and the second array light source 17 The additional light distribution pattern P2 formed by the light LA2 from each of the semiconductor light emitting elements 55 is offset in the left-right direction. Specifically, the additional light distribution pattern P1 formed by the first array light source 16 is to the right, and the additional light distribution pattern P2 formed by the second array light source 17 is to the left. Here, the offset refers to a configuration in which the light distribution pattern P1a and the light distribution pattern P2a partially overlap each other in the left-right direction, or the light distribution pattern P1a and the light distribution pattern P2a in the left-right direction. It is meant to include a structure that is arranged alternately without overlapping.

  As a result, as shown in FIG. 10, in this embodiment, the additional light distribution pattern P <b> 1 and the additional light distribution as well as the amount of light supplemented by the additional light distribution pattern P <b> 2 for the road surface irradiation area AS by a general vehicle lamp. Due to the offset in the left-right direction with respect to the pattern P2, the road surface irradiation area AL expanded in the forward direction (arrow A direction in FIG. 10) and the left-right direction (arrow B direction in FIG. 10) is formed.

  Further, since the semiconductor light emitting element 51 of the first array light source 16 and the semiconductor light emitting element 55 of the second array light source 17 can be individually lit, light distribution patterns can be formed in accordance with various situations. For example, the additional light distribution pattern P1 in which a part of the semiconductor light emitting elements 51 of the first array light source 16 that irradiates the position of the oncoming vehicle is turned off is formed so that the oncoming vehicle detected by the in-vehicle camera is not exposed to light. Thus, it is possible to irradiate a wide range of the road ahead of the vehicle within a range that does not give glare to the driver of the oncoming vehicle. Similarly, by forming an additional light distribution pattern P2 in which a part of the semiconductor light emitting elements 55 of the second array light source 17 that irradiates the position of the oncoming vehicle is turned off, the glare is not given to the driver of the oncoming vehicle. Thus, it is possible to irradiate a wide range of the road ahead of the vehicle.

  As described above, according to the vehicular lamp 10 according to the present embodiment, the low beam light source 14 emits the light L forming the low beam light distribution pattern PL, and the first array light source 16 has the additional distribution for the high beam. The light LA1 that forms the light pattern P1 is emitted, and the second array light source 17 causes the additional light distribution pattern P2 to overlap both the low beam light distribution pattern PL and the high beam additional light distribution pattern P1 on the vertical virtual screen in front of the lamp. The light LA2 that forms the light is emitted. Accordingly, the additional light distribution pattern P2 that overlaps both the low beam light distribution pattern PL formed by the light L of the low beam light source 14 and the high light additional light distribution pattern P1 formed by the light LA1 of the first array light source 16. For example, the light LA2 from the second array light source 17 that forms the light can spread the width of the light emitted from the lamp and irradiate the road surface, or can irradiate far.

  Further, an additional light distribution pattern P1 formed by each semiconductor light emitting element 51 of the first array light source 16 and an additional light distribution pattern P2 formed by each semiconductor light emitting element 55 of the second array light source 17 are in the left-right direction of the lamp. It is offset. For this reason, the division | segmentation number in the light distribution pattern comprised by the 1st array light source 16 and the 2nd array light source 17 can be increased, or resolution | decomposability can be made high, and various light distribution patterns are formed according to a use and a condition. Can do.

  Moreover, since the center position of the first array light source 16 is arranged at a position different from the center position of the second array light source 17 in the left-right direction of the lamp, the area where the light is irradiated on the road surface is expanded in the left-right direction of the lamp. Or the division | segmentation number of the light distribution pattern comprised by the 1st array light source 16 and the 2nd array light source 17 can be increased.

  Further, in the first array light source 16, since the arrangement pitch of the plurality of semiconductor light emitting elements 51 in the left-right direction of the lamp becomes denser as it approaches the first rear focal point F1 of the projection lens 12, the light emitted from the lamp is The use efficiency of light emitted from the first array light source 16 can be increased while widening the width irradiated on the road surface, and light can be emitted far away.

  Moreover, since the first array light source 16 and the second array light source 17 are arranged in two upper and lower stages, for example, compared with a case where the number of light emitting elements is increased and arranged in one stage in the left-right direction of the lamp, The distance to the rear focal point of the projection lens can be shortened as much as possible, and the utilization efficiency of light from the light emitting element can be increased.

  The resolution of the light distribution pattern can be increased by increasing the number of left and right arrays and the number of upper and lower stages of the semiconductor light emitting elements 51 of the first array light source 16 and the semiconductor light emitting elements 55 of the second array light source 17.

  For example, if the semiconductor light emitting elements 51 of the first array light source 16 are arranged in two stages as shown in FIG. 11 and the light distribution patterns P1a of the semiconductor light emitting elements 51 in each stage are arranged in a row, the lamp The light distribution pattern P1 formed by the first array light source 16 can be spread left and right to irradiate a wide range, and the resolution can be increased. Similarly, if the semiconductor light emitting elements 55 of the second array light source 17 are arranged in two stages and the light distribution patterns P2a of the semiconductor light emitting elements 55 in each stage are arranged in a row, the width of the lamp can be reduced. The light distribution pattern P2 formed by the two-array light source 17 can be spread left and right to irradiate a wide area, and the resolution can be increased.

  Further, the vehicle lamp 10 is not limited to a projector-type lamp, and may be a parabolic lamp that irradiates light from a light source forward of the vehicle with a reflector having a parabolic reflection surface in cross section.

Next, a modification of the vehicular lamp 10 according to the present embodiment will be described.
(Modification 1)
As shown in FIG. 12, the lamp of the first modification has a single rigid substrate 70. The rigid substrate 70 is, for example, a glass epoxy substrate or a paper phenol substrate. The rigid substrate 70 is fixed and attached to the second surface 42 that is the inclined surface of the base member 19. On the rigid substrate 70, the first array light source 16 and the second array light source 17 are mounted with an interval in the vertical direction. The rigid substrate 70 is provided with a connector 71 on one side. A connector (not shown) of a power supply line is connected to the connector 71, and power is supplied from the power supply line to the semiconductor light emitting element 51 of the first array light source 16 and the semiconductor light emitting element 55 of the second array light source 17.

  According to such a configuration, the first array light source 16 and the second array light source 17 can be easily arranged at predetermined positions with respect to the base member 19. Further, a relative positional shift between the first array light source 16 and the second array light source 17 can be suppressed.

(Modification 2)
As shown in FIGS. 13 and 14, the lamp of the second modification has a single flexible substrate 80. The flexible substrate 80 is a substrate in which a wiring pattern 82 made of copper foil is formed on a base 81 having excellent flexibility made of a plastic film such as polyimide. The flexible substrate 80 is fixed and attached to the second surface 42 that is the inclined surface of the base member 19. On the flexible substrate 80, the first array light source 16 and the second array light source 17 are mounted with an interval in the vertical direction. The flexible substrate 80 has a drawer 83 extending on one side, and a connector 84 is provided on the drawer 83. A connector (not shown) of a power supply line is connected to the connector 84, and power is supplied from the power supply line to the semiconductor light emitting element 51 of the first array light source 16 and the semiconductor light emitting element 55 of the second array light source 17.

  In the flexible substrate 80, the mounting position of the semiconductor light emitting element 51 of the first array light source 16 and the mounting position of the semiconductor light emitting element 55 of the second array light source 17 are formed by inclined surfaces at different angles in the base member 19. Attached to the surface 42. As a result, in a state where the flexible substrate 80 is attached to the base member 19, the emission part that is the light emitting surface of each semiconductor light emitting element 51 of the first array light source 16 is arranged in the vertical direction of the lamp in the second array light source 17. The light emitting surface of each semiconductor light emitting element 55 faces in a different direction from the emitting portion.

  The flexible substrate 80 is provided with a reinforcing plate 85 made of a metal plate such as aluminum on the mounting portion of the semiconductor light emitting element 51 of the first array light source 16, the semiconductor light emitting element 55 of the second array light source 17, and the connector 84. It is preferable to increase the rigidity of the mounting part of these components. In this way, the first array light source 16, the second array light source 17, and the connector 84 can be easily fixed to the base member 19. Further, when the flexible substrate 80 is fixed to the base member 19, a heat conductive adhesive or an aluminum plate may be interposed between the flexible substrate 80 and the base member 19. The heat generated by the light source 16 and the second array light source 17 can be transmitted to the base member 19 satisfactorily. Further, the first array light source 16 and the second array light source 17 may be configured by directly mounting the semiconductor light emitting elements 51 and 55 on the flexible substrate 80, or a substrate on which the semiconductor light emitting elements 51 and 55 are mounted. May be mounted on the flexible substrate 80.

  According to such a configuration, since the flexible substrate 80 can be disposed while being bent, workability when the first array light source 16 and the second array light source 17 are attached to the base member 19 is improved. Moreover, since the restriction | limiting at the time of arrange | positioning the 1st array light source 16 and the 2nd array light source 17 by a predetermined attitude | position becomes low by using the flexible board | substrate 80, the 1st array light source 16 and the 2nd array light source 17 are used. The degree of freedom in designing the light distribution pattern to be configured is improved. Moreover, by using the flexible substrate 80, the drawer portion 83 can be easily provided. For example, the connector 84 can be disposed at a position that does not interfere with the lamp component such as the lens holder 13 and the positioning pin. Design freedom is improved.

(Modification 3)
As shown in FIG. 15, the lamp of the third modification includes a projection lens 90 in which the convex shape of the emission surface is divided into upper and lower parts. Specifically, the projection lens 90 includes an upper first lens portion 91 and a lower second lens portion 92, and the first lens 91 portion and the second lens portion 92 include It is integrated. The first lens unit 91 has a first incident surface 91a and a first exit surface 91b, and the second lens unit 92 has a second entrance surface 92a and a second exit surface 92b.

  In the lamp of the modification 3, the light L from the first light source 14 and the light LA1 from the first array light source 16 are incident on the first incident surface 91a of the first lens unit 91 and emitted from the first emission surface 91b. The The light LA2 from the second array light source 17 is incident on the second incident surface 92a of the second lens portion 92 and is emitted from the second exit surface 92b.

  According to such a structure, the light distribution pattern can have a forward extension and a lateral extension while suppressing costs.

  Also, with the above configuration, the low beam light distribution pattern PL is formed by the low beam light source 14, the high beam additional light distribution pattern P1 is formed by the first array light source 16, and the low beam light distribution pattern PL is formed by the second array light source 17. And an additional light distribution pattern P2 that overlaps both the high-beam additional light distribution pattern P1. Thereby, for example, it is possible to widen the width of the light emitted from the lamp and irradiate the road surface or to irradiate far away.

(Modification 4)
As shown in FIG. 16, the lamp of the modification 4 includes a projection lens 100 and a sub lens 102. Each of the projection lens 100 and the sub lens 102 is a single focus lens. The projection lens 100 has an entrance surface 101a and an exit surface 101b. The sub lens 102 has an incident surface 103a and an exit surface 103b. The sub lens 102 is disposed between the second array light source 17 and the projection lens 100.

  In the lamp of the modification 4, the light L from the first light source 14 and the light LA1 from the first array light source 16 are incident on the incident surface 101a of the projection lens 100 and are emitted from the emission surface 101b. The light LA2 from the second array light source 17 is incident on the incident surface 103a of the sub lens 102 and emitted from the emission surface 103b, and then enters the incident surface 101a of the projection lens 100 and is emitted from the emission surface 101b. The

  According to such a structure, since the projection lens 100 seen from the front of the lamp is a single focal point, the sub lens 102 guides the light LA2 of the second array light source 17 in a predetermined direction while improving the appearance from the front of the lamp. The light distribution pattern can have a forward extension and a lateral extension.

  Also, with the above configuration, the low beam light distribution pattern PL is formed by the low beam light source 14, the high beam additional light distribution pattern P1 is formed by the first array light source 16, and the low beam light distribution pattern PL is formed by the second array light source 17. And an additional light distribution pattern P2 that overlaps both the high-beam additional light distribution pattern P1. Thereby, for example, it is possible to widen the width of the light emitted from the lamp and irradiate the road surface or to irradiate far away.

(Modification 5)
As shown in FIG. 17, in the lamp of the modified example 5, the second array light source 17 is supported not by the base member 19 but by the bracket 111 arranged at a position different from the base member 19, It is arranged above.

  In the lamp of Modification 5, the light L from the first light source 14 and the light LA1 from the first array light source 16 are incident on the second incident surface 32a of the projection lens 12 and are emitted from the emission surface 30. The light LA2 from the second array light source 17 enters the first incident surface 31a of the projection lens 12 and is emitted from the emission surface 30.

  According to such a structure, the light distribution can be extended and spread while maintaining the good appearance from the front of the lamp.

  Also, with the above configuration, the low beam light distribution pattern PL is formed by the low beam light source 14, the high beam additional light distribution pattern P1 is formed by the first array light source 16, and the low beam light distribution pattern PL is formed by the second array light source 17. And an additional light distribution pattern P2 that overlaps both the high-beam additional light distribution pattern P1. Thereby, for example, it is possible to widen the width of the light emitted from the lamp and irradiate the road surface or to irradiate far away.

(Modification 6)
As shown in FIG. 18, in the lamp of the modified example 6, the headlamp 1A is multi-lens equipped with two vehicle lamps 10A and 10B. For example, one vehicle lamp 10A is a low beam lamp provided with a low beam light source 14, and the other vehicle lamp 10B is a high beam lamp provided with a first array light source 16 and a second array light source 17. ing. The vehicular lamp 10A emits the light L of the low beam light source 14 that forms the low beam light distribution pattern PL. Further, the vehicular lamp 10B emits the light LA1 of the first array light source 16 that forms the additional light distribution pattern P1 for the high beam, and further forwards the lamp to both the low beam light distribution pattern PL and the additional light distribution pattern P1. The light LA2 of the second array light source 17 that forms the additional light distribution pattern P2 that overlaps the vertical virtual screen is emitted.

  According to such a structure, the low beam light distribution pattern PL formed by the light L of the low beam light source 14 and the high beam additional light distribution pattern P1 formed by the light LA1 of the first array light source 16 overlap. With the light LA2 from the second array light source 17 that forms the additional light distribution pattern P2, for example, it is possible to widen the width of the light emitted from the lamp and irradiate it far away. Moreover, since each vehicle lamp 10A, 10B reduces the number of light sources, it can simplify a structure.

  Also, with the above configuration, the low beam light distribution pattern PL is formed by the low beam light source 14, the high beam additional light distribution pattern P1 is formed by the first array light source 16, and the low beam light distribution pattern PL is formed by the second array light source 17. And an additional light distribution pattern P2 that overlaps both the high-beam additional light distribution pattern P1. Thereby, for example, it is possible to widen the width of the light emitted from the lamp and irradiate the road surface or to irradiate far away.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

10, 10A, 10B: vehicle lamp, 12: projection lens, 14: low beam light source (first light source), 16: first array light source, 17: second array light source, 51, 55: semiconductor light emitting element, F1: First rear focus (rear focus), F2: second rear focus (rear focus), L, LA1, LA2: light, P1: additional light distribution pattern, P2: additional light distribution pattern, PL: low beam light distribution pattern (low beam) Light distribution pattern for

Claims (4)

A first light source that emits light forming a light distribution pattern for low beam;
A first array light source in which a plurality of semiconductor light emitting elements are arranged in at least one row;
A second array light source in which a plurality of semiconductor light emitting elements are arranged in at least one row;
With
The first array light source emits light that forms at least a part of an additional light distribution pattern for a high beam,
The second array light source emits light that forms an additional light distribution pattern that overlaps on the vertical virtual screen in front of the lamp on both the low beam light distribution pattern and the high beam additional light distribution pattern.
Vehicle lamp. The plurality of semiconductor light emitting elements included in the first array light source can be individually turned on,
The plurality of semiconductor light emitting elements of the second array light source can be individually lit.
Of the light distribution patterns projected onto the vertical virtual screen in front of the lamp, the light distribution pattern formed by each semiconductor light emitting element of the first array light source and the distribution formed by each semiconductor light emitting element of the second array light source The light pattern is offset in the left-right direction of the lamp,
The vehicular lamp according to claim 1. In the left-right direction of the lamp, the center position of the first array light source is arranged at a position different from the center position of the second array light source.
The vehicular lamp according to claim 1 or 2. With a projection lens,
The first array light source is disposed behind the projection lens;
In the first array light source, the arrangement pitch of the plurality of semiconductor light emitting elements in the left-right direction of the lamp is denser as it approaches the rear focus of the projection lens.
The vehicular lamp according to any one of claims 1 to 3.

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