JP2017212167A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture capable of improving the degree of freedom for design of a light distribution pattern added to a predetermined light distribution pattern, while suppressing increase in size of the lighting fixture.SOLUTION: A vehicular lighting fixture includes: a projection lens 12; a light source 14 for low beam arranged behind the projection lens 12 and for emitting light for forming a predetermined low beam light distribution pattern PL; a reflector 15 for reflecting the light L emitted from the light source 14 for low beam toward a first rear focal point F1 of the projection lens 12; a first array light source 16 which is arranged behind the projection lens 12, and in which a plurality of semiconductor light-emitting elements 51 are arrayed in one row; and a second array light source 17 which is arranged behind the projection lens 12, and in which a plurality of semiconductor light-emitting elements 55 are arrayed in one row. The first array light source 16 and the second array light source 17 are arranged vertically.SELECTED DRAWING: Figure 4

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 that is an optical system of a projector type using a single projection lens and has an array light source.

JP, 2006-039020, A

  However, in the lamp of Patent Document 1, the number of semiconductor light emitting elements that can be mounted on the array light source is limited due to the space of the lamp. For this reason, in some cases, a desired light distribution pattern cannot be added to a predetermined light distribution pattern such as a low beam light distribution pattern using an array light source.

  An object of the present invention is to provide a vehicular lamp that can improve the degree of freedom in designing a light distribution pattern to be added to a predetermined light distribution pattern while suppressing an increase in the size of the lamp.

In order to achieve the above object, a vehicular lamp according to the present invention includes:
A projection lens;
A first light source that is arranged behind the projection lens and emits light that forms a predetermined light distribution pattern;
A reflector that reflects the light emitted from the first light source toward the projection lens;
A first array light source disposed behind the projection lens and having a plurality of semiconductor light emitting elements arranged in at least one row;
A second array light source disposed behind the projection lens and having a plurality of semiconductor light emitting elements arranged in at least one row;
With
The first array light source and the second array light source are arranged one above the other.

  According to this configuration, the first array light source and the second array light source are provided, and the first array light source and the second array light source are arranged vertically. For this reason, many semiconductor light emitting elements can be mounted on the lamp without increasing the width in the left-right direction of the lamp. Since more semiconductor light-emitting elements can be mounted compared to a lamp having one array light source, the degree of freedom in designing a light distribution pattern to be added to a predetermined light distribution pattern formed by the light of the first light source Will improve.

In the vehicular lamp of the present invention,
The projection lens has a first back focus and a second back focus;
The first array light source is disposed at a position corresponding to the first rear focus,
The second array light source may be disposed at a position corresponding to the second rear focal point.

  According to this configuration, the light emitted from the first array light source and the second array light source can be irradiated in front of the lamp as clear light distribution patterns while suppressing the increase in size of the lamp. In addition, the light emitted from the first array light source can be used as light that enhances the function of road surface irradiation, for example.

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 this configuration, the number of divisions in the light distribution pattern formed by the first array light source and the second array light source can be increased or the resolution can be increased, and various light distribution patterns can be formed according to applications and situations. be able to.

In the vehicular lamp of the present invention,
The second array light source may emit light forming at least a part of a high beam light distribution pattern.

  According to this configuration, the light emitted from the second array light source can be effectively used as at least a part of the high beam light distribution pattern.

In the vehicular lamp of the present invention,
In the lamp front-rear direction, the first array light source may be disposed between the first rear focus of the projection lens and the first light source.

  According to this configuration, it is possible to irradiate the front of the lamp with the light emitted from the first array light source through the vicinity of the first rear focal point while suppressing the increase in size of the lamp in the front-rear direction.

In the vehicular lamp of the present invention,
The first light source is configured to emit light that forms a light distribution pattern for a low beam,
A base member on which the first light source, the first array light source, and the second array light source are mounted;
An optical member that is a separate component from the base member and functions as a shade that forms a cut-off line of the light distribution pattern for the low beam in a state of being attached to the base member;
May be provided.

When a portion that functions as a shade is formed at the tip of the base member, the tip has a certain thickness due to restrictions on processing conditions of the base member. Since the tip cannot reflect light forward, it causes a dark portion.
According to this configuration, since the optical member is a separate component from the base member, the shape of the tip can be narrowed without being restricted by the processing conditions of the base member. For this reason, the thickness of the tip that causes the dark portion can be reduced, and the occurrence of the dark portion is easily suppressed to an inconspicuous level when viewed from the driver.

In the vehicular lamp of the present invention,
The optical member is
A first reflecting surface that reflects light emitted from the first array light source toward an incident surface of the projection lens;
A second reflecting surface that reflects the light emitted from the second array light source toward the incident surface of the projection lens;
You may have.

  According to this configuration, the light emitted from the first array light source and the second array light source can be used more efficiently.

In the vehicular lamp of the present invention,
The base member has a first surface on which the first light source is disposed, and a second surface on which the first array light source and the second array light source are disposed,
The second surface has an emission part of the first array light source disposed on the second surface facing obliquely forward and upward, and an emission part of the first array light source is arranged below the first rear focal point. As described above, it may be an inclined surface inclined with respect to the optical axis of the projection lens.

  According to this configuration, the first array light source is disposed at a position that avoids the light path for forming the light distribution pattern for the low beam, and much of the light emitted from the first array light source is first rearward. It is possible to pass the vicinity of the focal point. For this reason, the light of a 1st array light source can be utilized efficiently.

In the vehicular lamp of the present invention,
A rigid substrate on which the first array light source and the second array light source are disposed;
At least a part of the rigid substrate may be fixed to the inclined surface.

  According to this structure, it becomes easy to arrange | position the 1st array light source and the 2nd array light source in the position planned with respect to the base member.

In the vehicular lamp of the present invention,
A flexible substrate on which the first array light source and the second array light source are disposed;
At least a part of the flexible substrate may be fixed to the inclined surface.

  According to this structure, workability | operativity at the time of attaching a 1st array light source and a 2nd array light source to a base member improves.

In the vehicular lamp of the present invention,
In the left-right direction of the lamp, 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 this structure, the freedom degree of the design of the light distribution pattern in the left-right direction of a lamp improves, for example, the function of road surface irradiation can be strengthened.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle lamp which can improve the design freedom of the light distribution pattern added to a predetermined light distribution pattern can be provided, suppressing the enlargement of a lamp.

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 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.

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 emitting portion formed of the light emitting surface of the semiconductor light emitting element 51 faces obliquely upward 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 a position including the focal point F2 and its periphery.

  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 towards.

  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 irradiated 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 first array light source 16 and the second array light source 17 are provided, and the first array light source 16 and the second array light source 17 are vertically arranged. Has been placed. For this reason, many light emitting elements can be mounted on the lamp without increasing the width in the left-right direction of the lamp. In addition, since more light emitting elements can be mounted as compared with a lamp having one array light source, for example, the degree of freedom in designing a light distribution pattern added to the low beam light distribution pattern PL is improved.

  Further, the light LA1 and LA2 emitted from the first array light source 16 and the second array light source 17 can be irradiated in front of the lamp as clear light distribution patterns while suppressing the increase in size of the lamp. Further, the light LA1 emitted from the first array light source 16 can be used as light that enhances the function of road surface irradiation, for example.

  The light distribution pattern P1 formed by each semiconductor light emitting element 51 of the first array light source 16 and the light distribution pattern P2 formed by each semiconductor light emitting element 55 of the second array light source 17 are offset in the left-right direction of the lamp. Yes. 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, the second array light source is formed by superimposing the light distribution pattern formed by the light LA2 emitted from the second array light source 17 on the additional light distribution pattern P1 formed by the light LA1 emitted from the first array light source 16. A part of the light LA2 emitted from 17 can be effectively utilized as a high beam light distribution pattern.

  Further, since the first array light source 16 is disposed between the first rear focal point F1 of the projection lens 12 and the low beam light source 14 in the front-rear direction of the lamp, the first increase in the front-rear direction of the lamp is suppressed while suppressing the increase in size. The light LA1 emitted from one array light source 16 can be irradiated to the front of the lamp through the vicinity of the first rear focal point F1.

  By the way, when a portion that functions as a shade for forming the cut-off line CL of the light distribution pattern PL for low beam is formed at the tip of the base member 19, the tip has a certain thickness due to restrictions on processing conditions of the base member 19. End up. Since the tip cannot reflect light forward, it causes a dark portion.

  In contrast, in the present embodiment, the shade portion 68 that forms the cut-off line CL of the light distribution pattern PL for low beam on the optical member 18 that is a separate component from the base member 19 in a state of being attached to the base member 19. Is provided. Since the optical member 18 including the shade portion 68 is a separate component from the base member 19, the shape of the tip can be narrowed without being restricted by the processing conditions of the base member 19. For this reason, the thickness of the tip that causes the dark portion can be reduced, and the occurrence of the dark portion is easily suppressed to an inconspicuous level when viewed from the driver.

  The optical member 18 includes a first reflecting surface 65 that reflects the light LA 1 emitted from the first array light source 16 toward the first incident surface 31 a of the projection lens 12, and light emitted from the second array light source 17. Since the second reflection surface 66 that reflects LA2 toward the second incident surface 32a of the projection lens 12 is provided, the light LA1 and LA2 emitted from the first array light source 16 and the second array light source 17 are used more efficiently. can do.

  In addition, the second surface 42 of the base member 19 has the light emitting portion of the semiconductor light emitting element 51 of the first array light source 16 disposed on the second surface 42 facing obliquely upward and the semiconductor light emission of the first array light source 16. It is set as the inclined surface which inclines with respect to the optical axis of the projection lens 12 so that the output part of the element 51 may be arrange | positioned below the 1st back focus F1. Accordingly, the first array light source 16 is disposed at a position avoiding the light path for forming the low beam light distribution pattern PL, and most of the light LA1 emitted from the first array light source 16 is It is possible to pass the vicinity of the rear focal point F1. For this reason, the light LA1 of the first array light source 16 can be used efficiently.

  Further, 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 light distribution pattern can be freely designed in the left-right direction of the lamp. For example, the function of road surface irradiation can be enhanced.

  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.

  In this example, the low beam light source 14 is described as an example of the light source of the projector type optical system, but the present invention is not limited to this example. This light source may be a light source of a projector-type optical system (projection-type optical system using a reflector and a projection lens), and the light distribution pattern may be according to the application. For example, it may be a light source that forms a light distribution pattern specialized for road surface irradiation, or a light source that forms a light distribution pattern that irradiates a specific object.

Next, a modification of the vehicular lamp 10 according to the present embodiment will be described.
(Modification 1)
As shown in FIG. 11, Modification 1 has one 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. 12 and 13, 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 can be 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 array light source 16 and the second array light source 17 can be satisfactorily transmitted to the base member 19. 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. 14, 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 has an upper first lens portion 91 and a lower second lens portion 92, and the first lens portion 91 and the second lens portion 92 are connected to each other. 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 third modification, the light L from the low beam 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 portion 91 and are emitted from the first emission surface 91b. 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.

(Modification 4)
As shown in FIG. 15, 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 modified example 4, the light L from the low beam 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.

(Modification 5)
As shown in FIG. 16, in the fifth modification, the second array light source 17 is supported not by the base member 19 but by a bracket 111 arranged at a position different from the base member 19, and above the first array light source 16. Are arranged.

  In the modified example 5, the light L from the low beam 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.

  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: vehicle lamp, 12: projection lens, 14: low beam light source (first light source), 15: reflector, 16: first array light source, 17: second array light source, 18: optical member, 19: base member, 41: First surface, 42: Second surface, 51, 55: Semiconductor light emitting element, 65: First reflecting surface, 66: Second reflecting surface, 70: Rigid substrate, 80: Flexible substrate, CL: Cut-off line F1: first back focus, F2: second back focus, P1: additional light distribution pattern, P2: additional light distribution pattern, PL: low beam light distribution pattern

Claims (11)

A projection lens;
A first light source that is arranged behind the projection lens and emits light that forms a predetermined light distribution pattern;
A reflector that reflects the light emitted from the first light source toward the projection lens;
A first array light source disposed behind the projection lens and having a plurality of semiconductor light emitting elements arranged in at least one row;
A second array light source disposed behind the projection lens and having a plurality of semiconductor light emitting elements arranged in at least one row;
With
The first array light source and the second array light source are arranged vertically.
Vehicle lamp. The projection lens has a first back focus and a second back focus;
The first array light source is disposed at a position corresponding to the first rear focus,
The second array light source is disposed at a position corresponding to the second rear focal point,
The vehicular lamp according to claim 1. 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 or 2. The second array light source emits light that forms at least a part of a high beam light distribution pattern.
The vehicular lamp according to any one of claims 1 to 3. In the lamp front-rear direction, the first array light source is disposed between the first rear focus of the projection lens and the first light source.
The vehicular lamp according to any one of claims 1 to 4. The first light source is configured to emit light that forms a light distribution pattern for a low beam,
A base member on which the first light source, the first array light source, and the second array light source are mounted;
An optical member that is a separate component from the base member and functions as a shade that forms a cut-off line of the light distribution pattern for the low beam in a state of being attached to the base member;
Comprising
The vehicular lamp according to any one of claims 1 to 5. The optical member is
A first reflecting surface that reflects light emitted from the first array light source toward an incident surface of the projection lens;
A second reflecting surface that reflects the light emitted from the second array light source toward the incident surface of the projection lens;
Having
The vehicular lamp according to claim 6. The base member has a first surface on which the first light source is disposed, and a second surface on which the first array light source and the second array light source are disposed,
The second surface has an emission part of the first array light source disposed on the second surface facing obliquely forward and upward, and an emission part of the first array light source is arranged below the first rear focal point. The inclined surface is inclined with respect to the optical axis of the projection lens,
The vehicular lamp according to claim 6 or 7. A rigid substrate on which the first array light source and the second array light source are disposed;
At least a part of the rigid substrate is fixed to the inclined surface,
The vehicular lamp according to claim 8. A flexible substrate on which the first array light source and the second array light source are disposed;
At least a part of the flexible substrate is fixed to the inclined surface.
The vehicular lamp according to claim 8. 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 any one of claims 1 to 10.

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