WO2013118625A1 - Lamp unit and vehicle lamp - Google Patents

Lamp unit and vehicle lamp Download PDF

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Publication number
WO2013118625A1
WO2013118625A1 PCT/JP2013/052100 JP2013052100W WO2013118625A1 WO 2013118625 A1 WO2013118625 A1 WO 2013118625A1 JP 2013052100 W JP2013052100 W JP 2013052100W WO 2013118625 A1 WO2013118625 A1 WO 2013118625A1
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WO
WIPO (PCT)
Prior art keywords
light
lens
light source
lamp
light emitting
Prior art date
Application number
PCT/JP2013/052100
Other languages
French (fr)
Japanese (ja)
Inventor
佑太 宇賀神
Original Assignee
株式会社小糸製作所
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Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Publication of WO2013118625A1 publication Critical patent/WO2013118625A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B60Q1/0047—Signalling unit mounted on a headlamp unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/332—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with continuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings

Definitions

  • the present invention relates to a vehicular lamp including a plurality of lamp units, and a lamp unit equipped in the vehicular lamp.
  • a vehicle lamp in which a plurality of lamp units constituting different optical systems are arranged in a lamp chamber.
  • a lamp unit for low beam irradiation, a lamp unit for high beam irradiation, a lamp unit for forming an additional light distribution pattern, and the like are arranged in the lamp chamber in a horizontal or vertical direction. Has been.
  • each light source is reflected by the reflector, and is given directivity for obtaining a predetermined light distribution pattern, and enters a corresponding lens.
  • part of the light emitted from the light source may enter an adjacent optical system without being subjected to directivity control.
  • each light source is associated with a different illumination function, and is configured to form a light distribution pattern in a different area. Therefore, an intruded light illuminates an area originally illuminated by an adjacent light source. It may end up. For example, when a part of the light emitted from the light source for low beam irradiation enters the lens for high beam irradiation, glare may be given to the preceding vehicle.
  • an object of the present invention is to provide a technique capable of solving a problem caused by a part of light emitted from a light source of a certain lamp unit entering an optical system of another lamp unit.
  • a first aspect that the present invention can take is a lamp unit, A light source; A lens through which light emitted from the light source passes; A first reflector disposed between the light source and the lens; The light reflecting surface of the first reflector is formed with a plurality of protrusions protruding toward an imaginary line connecting the light emission center of the light source and the edge of the incident surface of the lens, The plurality of protrusions are regularly arranged along the light emission direction.
  • the present invention can also be applied to an optical system using a reflector having an ellipsoidal reflecting surface.
  • a second aspect of the present invention is a vehicle lamp, A lens portion having a first lens and a second lens; A first light source that emits light through the first lens; A second light source that emits light through the second lens; A partition that separates a first space between the first light source and the first lens and a second space between the second light source and the second lens;
  • the partition wall has a plurality of protrusions protruding toward the first space and the second space, The tips of the plurality of protrusions are outside the imaginary line connecting the emission center of the first light source and the edge of the incident surface of the first lens, and between the emission center of the second light source and the incident surface of the second lens It is arranged outside the imaginary line connecting the edges.
  • the tips of the plurality of protrusions are arranged outside the imaginary lines that connect the emission centers of the light sources and the edges of the entrance surfaces of the lenses, so that each light source does not interfere with the originally intended light distribution. . Therefore, it is possible to effectively remove only unnecessary light while obtaining a desired light distribution pattern. In particular, when the first light source and the second light source irradiate light to different areas, it is possible to effectively prevent unnecessary light from illuminating areas other than the desired illumination area.
  • the first lens and the second lens are integrally formed and the distance between the lenses is small, it is possible to reliably prevent unnecessary light from entering the adjacent lenses. In other words, it is possible to make adjacent lamp units as close as possible without worrying about intrusion light, which contributes to miniaturization of the entire vehicle lamp.
  • FIG. 1 shows a configuration in which a part of a left headlamp unit 1 as an example of a vehicle lamp according to an embodiment of the present invention is cut along a horizontal plane and viewed from above.
  • the left headlight unit 1 is installed at the front end of the left side of the vehicle, and includes a lamp body 2 and a translucent cover 3.
  • the translucent cover 3 is formed of a translucent resin or the like, and is attached to the front end portion of the lamp body 2 made of metal or resin to form the lamp chamber 4.
  • a first lamp unit 10 a second lamp unit 20, a third lamp unit 30, a fourth lamp unit 40, a compound lens 50, and a support member 60 are arranged.
  • 1st lamp unit 10 is used in order to irradiate the low beam which illuminates the short distance front of a vehicle.
  • the 2nd lamp unit 20 is used in order to irradiate the high beam which illuminates the front wide area and a distant place with comparatively high illumination intensity.
  • the third lamp unit 30 is used to irradiate light to the left of the low beam irradiation region in order to illuminate the traveling direction of the vehicle in an auxiliary manner when the vehicle turns left.
  • the fourth lamp unit 40 is used to irradiate light further to the left of the irradiation area by the third lamp unit 30 as necessary when the vehicle turns left. That is, the third lamp unit 30 and the fourth lamp unit 40 are used as so-called cornering lamps.
  • the compound lens 50 is configured as a compound projection lens in which a first projection lens unit 51, a second projection lens unit 52, a third projection lens unit 53, and a fourth projection lens unit 54 are integrally molded.
  • the compound lens 50 is supported at a predetermined position in the lamp chamber 4 through a holder (not shown).
  • the support member 60 is made of a material such as a metal having high thermal conductivity, and is supported by the lamp body 2 via the attitude adjusting screw 51.
  • the position and posture of the support member 60 relative to the compound lens 50 can be changed by appropriately rotating the posture adjusting screw 51.
  • the first lamp unit 10 for low beam irradiation includes a first light emitting element 11, a first shielding reflector 12, an ellipsoidal reflector 13, a shade 14, and a holder 15, and these and a first projection lens unit 51 of the compound lens 50. It is configured.
  • the 1st projection lens part 51 is arrange
  • the first projection lens unit 51 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 51a and the rear (vehicle inner side) is also a convex incident surface 51b.
  • the first light emitting element 11 is a white light emitting diode.
  • the first light emitting element 11 is disposed behind the rear focal point of the first projection lens unit 51 and is supported by the holder 15 with its light emitting surface facing vertically upward.
  • the holder 15 is made of a material such as a metal having high thermal conductivity, and is fixed to the first support portion 61 a of the support member 60.
  • a first heat radiating portion 61b composed of a plurality of fins is formed behind the first support portion 61a.
  • the first shielding reflector 12 is a cylindrical member disposed between the first light emitting element 11 and the first projection lens unit 51.
  • the inner wall surface of the first shielding reflector 12 is a light reflecting surface, and a plurality of protrusions 16 are formed.
  • the ellipsoidal reflector 13 has a dome-like reflecting surface that covers the first light emitting element 11 from above, and is fixed on the holder 15.
  • the reflecting surface has a shape that reflects light emitted upward from the first light emitting element 11 toward the first projection lens unit 51 toward the optical axis Ax.
  • the cross section along the horizontal plane including the optical axis Ax of the reflecting surface has the light emission center 11a of the first light emitting element 11 as the first focal point, and the rear focal point of the first projection lens unit 51 as the second focal point. It has an elliptical shape.
  • the reflecting surface having the shape as described above converges the light emitted from the first light emitting element 11 to the rear focal point of the first projection lens unit 51.
  • the light that has passed through the rear focal point is incident on the incident surface 51b of the first projection lens unit 51, and passes through the exit surface 51a as light L1.
  • a low beam pattern indicated by a symbol PL in FIG. 2 is formed on a virtual vertical screen arranged in front of the vehicle.
  • the low beam pattern PL is a left side light distribution pattern (used in an area where the vehicle is required to travel in the left lane), and has a first cut-off line CL1, a second cut-off line CL2, and a third cut at the upper edge.
  • the first cut-off line CL1 used as the own lane-side cut-off line and the second cut-off line CL2 used as the oncoming lane-side cut-off line are arranged in the horizontal line HH direction with the vertical line VV as a boundary. It is extended.
  • the third cutoff line CL3 extends obliquely downward from the right end of the first cutoff line CL1 and is connected to the left end of the second cutoff line CL2.
  • the first to third cut-off lines CL1 to CL3 are collectively referred to as “cut-off line CL” as necessary.
  • the cut-off line CL is formed as a reverse projection image of the upper edge shape of the shade 14 by blocking a part of the light reflected by the reflecting surface of the ellipsoidal reflector 13 by the shade 14.
  • the shade 14 is disposed in the vicinity of the rear focal point of the first projection lens unit 51.
  • the second lamp unit 20 for high beam irradiation includes a second light emitting element 21, a second shielding reflector 22, and a holder 23, and is configured by the second projection lens unit 52 of the compound lens 50.
  • the second projection lens unit 52 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 52a and the rear (vehicle inner side) is also a convex incident surface 52b.
  • the second light emitting element 21 is a white light emitting diode.
  • the second light emitting element 21 is disposed in the vicinity of the rear focal point of the second projection lens unit 52 and supported by the holder 23 with its light emitting surface facing the front of the vehicle.
  • the holder 23 is made of a material such as a metal having high thermal conductivity, and is fixed to the second support portion 62a of the support member 60.
  • a second heat radiating portion 62b made of a plurality of fins is formed behind the second support portion 62a.
  • the second shielding reflector 12 is a cylindrical member disposed between the second light emitting element 21 and the second projection lens unit 52.
  • the inner wall surface of the second shielding reflector 22 is a light reflecting surface, and a plurality of protrusions 26 are formed.
  • the light emitted from the second light emitting element 21 enters the incident surface 52b of the second projection lens unit 52, and passes through the emitting surface 52a as the light L2.
  • a high beam pattern indicated by reference sign PH in FIG. 2 is formed on the virtual vertical screen disposed in front of the vehicle by the light L2.
  • the high beam pattern PH is a light distribution pattern that spreads in the vertical and horizontal directions around the intersection of the vertical line VV and the horizontal line HH.
  • the third lamp unit 30 for a cornering lamp includes a third light emitting element 31, a third shielding reflector 32, and a holder 33, and is configured by the third projection lens unit 53 of the compound lens 50.
  • the third projection lens unit 53 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 53a and the rear (vehicle inner side) is also a convex incident surface 53b.
  • the third light emitting element 31 is a white light emitting diode.
  • the third light emitting element 31 is disposed in the vicinity of the rear focal point of the third projection lens unit 53 and supported by the holder 33 with its light emitting surface facing the front of the vehicle.
  • the holder 33 is made of a material such as a metal having high thermal conductivity, and is fixed to the third support portion 63a of the support member 60.
  • a third heat radiating portion 63b composed of a plurality of fins is formed behind the third support portion 63a.
  • the third shielding reflector 32 is a cylindrical member disposed between the third light emitting element 31 and the third projection lens unit 53.
  • the inner wall surface of the third shielding reflector 32 is a light reflecting surface, and a plurality of protrusions 36 are formed.
  • a first cornering pattern indicated by reference numeral PC1 in FIG. 2 is formed on the virtual vertical screen disposed in front of the vehicle by the light L3.
  • the first cornering pattern PC1 is a light distribution pattern formed on the left side of the high beam pattern PH in addition to or instead of the high beam pattern PH when the vehicle turns left.
  • the fourth lamp unit 40 for the cornering lamp includes a fourth light emitting element 41, a fourth shielding reflector 42, and a holder 43, and is configured by the fourth projection lens unit 54 of the compound lens 50.
  • the fourth projection lens unit 54 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 54a and the rear (vehicle inner side) is also a convex incident surface 54b.
  • the fourth light emitting element 41 is a white light emitting diode.
  • the 4th light emitting element 41 is arrange
  • the holder 43 is made of a material such as a metal having high thermal conductivity, and is fixed to the fourth support portion 64a of the support member 60.
  • a fourth heat radiating portion 64b made of a plurality of fins is formed behind the fourth support portion 64a.
  • the fourth shielding reflector 42 is a cylindrical member disposed between the fourth light emitting element 41 and the fourth projection lens unit 54.
  • the inner wall surface of the fourth shielding reflector 42 is a light reflecting surface, and a plurality of protrusions 46 are formed.
  • the light emitted from the fourth light emitting element 41 is incident on the incident surface 54b of the fourth projection lens unit 54 and passes through the emitting surface 54a as light L4.
  • a second cornering pattern indicated by reference numeral PC2 in FIG. 2 is formed on the virtual vertical screen arranged in front of the vehicle by the light L4.
  • the second cornering pattern PC1 is a light distribution pattern formed on the left side of the first cornering pattern PC1 in addition to or instead of the first cornering pattern PC1 when the vehicle turns left.
  • the right headlight unit having a symmetrical configuration with the left headlight unit 1 is disposed at the front end portion on the right side of the vehicle.
  • the low beam pattern PL and the high beam pattern PH are formed by combining light emitted from the first lamp unit 10 and the second lamp unit 20 in the left and right headlamp units, respectively.
  • the third lamp unit 30 and the fourth lamp unit 40 in the right headlamp unit are used as cornering lamps that supplementarily illuminate the traveling direction as necessary when the vehicle turns right.
  • the 1st shielding reflector 12 as an example of a 1st reflector is arrange
  • a plurality of protrusions 16 are formed on the inner wall surface of the first shielding reflector 12 which is a light reflecting surface.
  • the plurality of protrusions 16 protrude toward an imaginary line 17 that connects the light emission center 11 a of the first light emitting element 11 and the edge 51 c of the incident surface 51 b of the first projection lens unit 51.
  • the plurality of protrusions 16 are regularly arranged along the light emission direction from the first light emitting element 11.
  • the ellipsoidal reflector 13 disposed between the shielding reflector 12 and the first light emitting element 11 functions as an example of the second reflector. That is, a part of the light emitted from the first light emitting element 11 is converged between the first light emitting element 11 and the first projection lens unit 51 by the reflecting surface of the ellipsoidal reflector 13, and then enters the incident surface 51b. To do. Since the incident light is controlled in directivity by the ellipsoidal reflector 13, it does not enter the optical system of the adjacent second lamp unit 20.
  • Another part of the light emitted from the first light emitting element 11 is so-called direct incident light that passes through the space inside the virtual line 17 and enters the incident surface 51b. This incident light also does not enter the optical system of the adjacent second lamp unit 20.
  • the light emitted from the first light emitting element 11 includes light that is not reflected by the ellipsoidal reflector 13 and does not directly enter the incident surface 51b. That is, the light travels outside the virtual line 17 and is not used for reflection by the ellipsoidal reflector 13. Light that is not subjected to such light distribution control may enter the optical system of the adjacent second lamp unit 20 without entering the incident surface 51b.
  • FIG. 4 is a schematic diagram for explaining the capturing action, and the scale of each member is appropriately changed for convenience of explanation.
  • each of the plurality of protrusions 16 has a tip 16c formed by an inclined surface 16a and an inclined surface 16b. Since the inclined surfaces 16a and the inclined surfaces 16b have the same inclination angle, the regularity of the arrangement of the plurality of protrusions 16 is ensured.
  • the light that travels outside the imaginary line 17 and is not used for reflection by the ellipsoidal reflector 13 is reflected by one of the plurality of inclined surfaces 16a and further reflected by the inclined surface 16b that faces the inclined surface 16a.
  • the A part of such light attenuates while being repeatedly reflected in the valleys of the protrusions 16.
  • a part of the other light again enters the space between the first light emitting element 11 and the first projection lens unit 51, but the light intensity is greatly attenuated through a plurality of reflections. Further, a part of the other light is reflected to the rear of the shielding reflector 12 and loses directivity as outgoing light.
  • a part of the reflected light can slightly reach the gap 19 between the first projection lens unit 51 and the front end of the shielding reflector 12, but the light intensity is sufficiently attenuated because it is reflected many times by the plurality of protrusions 16. Therefore, there is almost no influence on the optical system of the adjacent second lamp unit 20.
  • part of the light emitted from the first light emitting element 11 enters the second projection lens unit 52 of the second lamp unit 20 without being subjected to light distribution control. Can be prevented. Therefore, it is possible to prevent the occurrence of a problem that part of the light irradiated as the low beam enters the high beam irradiation area and gives glare to the preceding vehicle.
  • the tips 16 c of all the protrusions 16 are disposed outside the imaginary line 17 that connects the light emission center 11 a of the first light emitting element 11 and the edge 51 c of the incident surface 51 b of the first projection lens unit 51. Does not interfere with the light distribution originally intended. Therefore, it is possible to effectively remove only unnecessary light while obtaining a desired light distribution pattern.
  • the 2nd shielding reflector 22 as an example of a 1st reflector is arrange
  • a plurality of protrusions 26 are formed on the inner wall surface of the second shielding reflector 22 which is a light reflecting surface.
  • the plurality of protrusions 26 protrude toward an imaginary line 27 that connects the light emission center 21 a of the second light emitting element 21 and the edge 52 c of the incident surface 52 b of the second projection lens unit 52.
  • the plurality of protrusions 26 are regularly arranged along the light emission direction from the second light emitting element 21.
  • Part of the light emitted from the second light emitting element 21 is so-called direct incident light that passes through the space inside the virtual line 27 and enters the incident surface 52b. This incident light does not enter the optical system of the adjacent first lamp unit 10 and third lamp unit 30.
  • the light emitted from the second light emitting element 21 includes light that does not directly enter the incident surface 52b. That is, the light traveling outside the virtual line 27 may enter the optical system of the adjacent first lamp unit 10 and third lamp unit 30 without being subjected to light distribution control.
  • the plurality of protrusions 26 of the present embodiment are provided to capture such light. Since the specific configuration and operation of the plurality of protrusions 26 are the same as those of the first shielding reflector 12 described with reference to FIG. 4, repeated description is omitted.
  • the third shielding reflector 32 included in the third lamp unit 30 and the fourth shielding reflector 42 included in the fourth lamp unit have the same configuration as the second shielding reflector 22 included in the second lamp unit 20. Since the specific configuration and operation of the plurality of protrusions 36 and 46 are the same as those of the first shielding reflector 12 described with reference to FIG. 4, repeated description is omitted.
  • the light emitting element as a light source provided in each lamp unit is not limited to a white light emitting diode.
  • a laser diode or the like can also be used.
  • the lens through which the light emitted from the light source passes is not limited to the projection lens. If a desired light distribution pattern can be obtained, a known lens can be appropriately employed.
  • the shape of the plurality of protrusions 16 is not limited to that shown in FIG.
  • the protrusions 16 do not have to be formed by the inclined surfaces 16a and 16b defined by the sharp tip 16c.
  • at least one of a trough and a ridge formed by the plurality of protrusions 16 may have a curved shape.
  • each protrusion 16 should be determined as appropriate as long as the directivity toward a part of another protrusion 16 can be positively given to the light reflected by a part of each protrusion 16. Can do.
  • the “reflecting surface” in the present invention is distinguished from a scattering surface that gives non-directionality to reflected light.
  • the first and second shielding reflectors 12 and 22 are located between the first light emitting element 11 and the second light emitting element 21.
  • Wall part 12a and 22a have a function as a partition part which separates the optical system of an adjacent lamp unit.
  • the left headlamp unit 1 as a vehicular lamp includes a compound lens 50 as a lens unit.
  • the compound lens 50 includes a first projection lens unit 51 as an example of a first lens and a second projection lens unit 52 as an example of a second lens.
  • the first light emitting element 11 as an example of the first light source emits light through the first projection lens unit 51
  • the second light emitting element 21 as an example of the second light source emits light through the second projection lens unit 52.
  • the partition part separates the first space 18 between the first light emitting element 11 and the first projection lens part 51 and the second space 28 between the second light emitting element 21 and the second projection lens part 52.
  • the partition wall includes a plurality of protrusions 16 protruding toward the first space 18 and a plurality of protrusions 26 protruding toward the second space 28.
  • the tips 16 c of the plurality of protrusions 16 are disposed outside the virtual line 17 that connects the light emission center 11 a of the first light emitting element 11 and the edge 51 c of the incident surface 51 b of the first projection lens unit 51.
  • the tips 26 c of the plurality of protrusions 26 are arranged outside the virtual line 27 that connects the light emission center 21 a of the second light emitting element 21 and the edge 52 c of the incident surface 52 b of the second projection lens unit 52.
  • the wall portions 12a and 22a do not have to be provided separately, and may be configured as an integral member. Further, it is not necessary that protrusions are formed on the entire inner wall surface of each shielding reflector. A plurality of protrusions may be formed at least in a portion functioning as a partition wall that separates the spaces between the adjacent light emitting element and the projection lens unit.
  • the direction in which the lamp units are arranged is not limited to the horizontal direction as in the above embodiment, but may be the vertical direction.
  • the adjacent projection lenses as the first lens and the second lens do not need to be integrally molded as in the above-described embodiment, and may be configured to be provided with a plurality of separate lenses.
  • the illumination functions of the first lamp unit 10, the second lamp unit 20, the third lamp unit 30, and the fourth lamp unit 40 are respectively for low beam irradiation, high beam irradiation, and first cornering lamp as in the above embodiment. And it is not necessary to be associated with the second cornering lamp. If adjacent light sources irradiate light to different areas, they can be rearranged in an appropriate order, and can be associated with other lighting functions such as daytime lighting, direction indication, and width lights. it can.
  • the first light source and the second light source do not necessarily need to be associated with the first light emitting element 11 and the second light emitting element, respectively.
  • An arbitrary set of adjacent ones from the first light emitting element 11, the second light emitting element 21, the third light emitting element 31, and the fourth light emitting element 41 can be selected.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

In a lamp unit (10), a shielding reflector (12) is disposed between a light source (11) and a lens portion (51) where light emitted from the light source (11) passes. On a light-reflecting surface of the shielding reflector (12), a plurality of projections (16) are formed to project toward an imaginary line (17) that connects a luminescent center (11a) of the light source (11) to an end edge (51c) of an incident surface (51b) of the lens portion (51). The plurality of projections (16) are arranged regularly along a direction in which the light is emitted.

Description

灯具ユニットおよび車両用灯具Lamp unit and vehicle lamp
　本発明は、複数の灯具ユニットを備える車両用灯具、および車両用灯具に装備される灯具ユニットに関する。 The present invention relates to a vehicular lamp including a plurality of lamp units, and a lamp unit equipped in the vehicular lamp.
　それぞれ異なる光学系を構成する複数の灯具ユニットが灯室内に配置された車両灯具が知られている。例えば特許文献１および２に記載の構成においては、ロービーム照射用の灯具ユニット、ハイビーム照射用の灯具ユニット、付加配光パターン形成用の灯具ユニット等が、灯室内に水平方向あるいは鉛直方向に並べて配置されている。 There is known a vehicle lamp in which a plurality of lamp units constituting different optical systems are arranged in a lamp chamber. For example, in the configurations described in Patent Documents 1 and 2, a lamp unit for low beam irradiation, a lamp unit for high beam irradiation, a lamp unit for forming an additional light distribution pattern, and the like are arranged in the lamp chamber in a horizontal or vertical direction. Has been.
日本国特許出願公開２００５－２９４１７６号公報Japanese Patent Application Publication No. 2005-294176 日本国特許出願公開２００７－２１３８７９号公報Japanese Patent Application Publication No. 2007-213879
　各光源から出射された光はリフレクタにより反射され、所定の配光パターンを得るための指向性を与えられて対応するレンズに入射する。しかしながら光源から出射された光の一部が、指向制御に供されることなく隣接する光学系に侵入することがある。 The light emitted from each light source is reflected by the reflector, and is given directivity for obtaining a predetermined light distribution pattern, and enters a corresponding lens. However, part of the light emitted from the light source may enter an adjacent optical system without being subjected to directivity control.
　上述のように各光源は異なる照明機能に対応付けられており、異なる領域に配光パターンを形成するように構成されているため、隣接する光源が本来照明する領域を、侵入した光が照らしてしまうことがある。例えばロービーム照射用の光源からの出射光の一部がハイビーム照射用のレンズに侵入した場合、前走車にグレアを与えてしまうことがある。 As described above, each light source is associated with a different illumination function, and is configured to form a light distribution pattern in a different area. Therefore, an intruded light illuminates an area originally illuminated by an adjacent light source. It may end up. For example, when a part of the light emitted from the light source for low beam irradiation enters the lens for high beam irradiation, glare may be given to the preceding vehicle.
　このような侵入光の影響は、特許文献１や２に記載のように各光源から出射された光が共通のレンズを通過する構成において、より顕著となる。 Such an influence of intrusion light becomes more conspicuous in a configuration in which light emitted from each light source passes through a common lens as described in Patent Documents 1 and 2.
　よって本発明は、ある灯具ユニットの光源から出射された光の一部が他の灯具ユニットの光学系に侵入することによる不具合を解消可能な技術を提供することを目的とする。 Therefore, an object of the present invention is to provide a technique capable of solving a problem caused by a part of light emitted from a light source of a certain lamp unit entering an optical system of another lamp unit.
　上記の目的を達成するために本発明がとりうる第１の態様は、灯具ユニットであって、
　光源と、
　前記光源から出射された光が通過するレンズと、
　前記光源と前記レンズの間に配置された第１リフレクタとを備え、
　前記第１リフレクタの光反射面には、前記光源の発光中心と前記レンズの入射面の端縁を結ぶ仮想線に向かい突出する複数の突起が形成されており、
　前記複数の突起は前記光の出射方向に沿って規則的に配列されている。 In order to achieve the above object, a first aspect that the present invention can take is a lamp unit,
A light source;
A lens through which light emitted from the light source passes;
A first reflector disposed between the light source and the lens;
The light reflecting surface of the first reflector is formed with a plurality of protrusions protruding toward an imaginary line connecting the light emission center of the light source and the edge of the incident surface of the lens,
The plurality of protrusions are regularly arranged along the light emission direction.
　光源より出射されて仮想線の外側を進行する光は、レンズの入射面に入射されないため、隣接する灯具ユニットに侵入するおそれがある。上記の構成によれば、規則的に配列された複数の突起間でそのような光を繰り返し反射させて、その光度を大幅に減衰させることができる。したがって配光制御を受けない光が、十分な光度で隣接する灯具ユニットの光学系に侵入することが防止される。 Since the light emitted from the light source and traveling outside the imaginary line is not incident on the incident surface of the lens, there is a risk of entering an adjacent lamp unit. According to said structure, such light can be repeatedly reflected between several protrusions arranged regularly, and the luminous intensity can be attenuated significantly. Therefore, it is possible to prevent the light not subjected to the light distribution control from entering the optical system of the adjacent lamp unit with a sufficient luminous intensity.
　前記光源と前記第１リフレクタの間に配置され、前記光源から出射された光の一部を前記光源と前記レンズの間に収束させる第２リフレクタをさらに備える構成としてもよい。すなわち本発明は、楕円体形状の反射面を有するリフレクタを用いる光学系にも適用可能である。 It is good also as a structure further provided with the 2nd reflector which is arrange | positioned between the said light source and the said 1st reflector, and converges a part of light radiate | emitted from the said light source between the said light source and the said lens. That is, the present invention can also be applied to an optical system using a reflector having an ellipsoidal reflecting surface.
　上記目的を達成するために本発明がとりうる第２の態様は、車両用灯具であって、
　第１レンズと第２レンズを有するレンズ部と、
　前記第１レンズを通じて光を照射する第１光源と、
　前記第２レンズを通じて光を照射する第２光源と、
　前記第１光源と前記第１レンズの間の第１空間と、前記第２光源と前記第２レンズの間の第２空間とを隔てる隔壁部とを備え、
　前記隔壁部は、前記第１空間および前記第２空間に向かって突出する複数の突起を有し、
　前記複数の突起の先端は、前記第１光源の発光中心と前記第１レンズの入射面の端縁を結ぶ仮想線の外側、および前記第２光源の発光中心と前記第２レンズの入射面の端縁を結ぶ仮想線の外側に配置されている。 In order to achieve the above object, a second aspect of the present invention is a vehicle lamp,
A lens portion having a first lens and a second lens;
A first light source that emits light through the first lens;
A second light source that emits light through the second lens;
A partition that separates a first space between the first light source and the first lens and a second space between the second light source and the second lens;
The partition wall has a plurality of protrusions protruding toward the first space and the second space,
The tips of the plurality of protrusions are outside the imaginary line connecting the emission center of the first light source and the edge of the incident surface of the first lens, and between the emission center of the second light source and the incident surface of the second lens It is arranged outside the imaginary line connecting the edges.
　各光源より出射されて各仮想線の外側を進行する光は、各レンズの入射面に入射されないため、隣接するレンズに侵入するおそれがある。上記の構成によれば、複数の突起間でそのような光を繰り返し反射させて、その光度を大幅に減衰させることができる。したがって配光制御を受けない光が、十分な光度をもって隣接するレンズに侵入することが防止される。 Since the light emitted from each light source and traveling outside each virtual line is not incident on the incident surface of each lens, there is a possibility of entering an adjacent lens. According to said structure, such light can be repeatedly reflected between several protrusions, and the luminous intensity can be attenuated significantly. Therefore, it is possible to prevent the light not subjected to the light distribution control from entering the adjacent lens with a sufficient luminous intensity.
　複数の突起の先端は、各光源の発光中心と各レンズの入射面の端縁を結ぶ各仮想線の外側に配置されているため、各光源が本来意図している配光を妨げることがない。したがって所望の配光パターンを得つつ、不要な光のみを効果的に除去することができる。特に前記第１光源と前記第２光源が異なる領域に光を照射するものである場合、不要な光が所望の照明領域以外を照らしてしまうことを効果的に防止できる。 The tips of the plurality of protrusions are arranged outside the imaginary lines that connect the emission centers of the light sources and the edges of the entrance surfaces of the lenses, so that each light source does not interfere with the originally intended light distribution. . Therefore, it is possible to effectively remove only unnecessary light while obtaining a desired light distribution pattern. In particular, when the first light source and the second light source irradiate light to different areas, it is possible to effectively prevent unnecessary light from illuminating areas other than the desired illumination area.
　また前記第１レンズと前記第２レンズが一体に形成されてレンズ間距離が小さい場合においても、隣接するレンズへの不要な光の侵入を確実に防止できる。換言すると、侵入光を気にすることなく隣接する灯具ユニット同士をできる限り接近させることが可能であり、車両用灯具全体の小型化にも寄与する。 Further, even when the first lens and the second lens are integrally formed and the distance between the lenses is small, it is possible to reliably prevent unnecessary light from entering the adjacent lenses. In other words, it is possible to make adjacent lamp units as close as possible without worrying about intrusion light, which contributes to miniaturization of the entire vehicle lamp.
本発明の一実施形態に係る左前照灯ユニットの一部の構成を模式的に示す横断面図である。It is a cross-sectional view which shows typically the structure of a part of left headlamp unit which concerns on one Embodiment of this invention. 図１の左前照灯ユニットの各灯具ユニットにより形成される配光パターンを模式的に示す図である。It is a figure which shows typically the light distribution pattern formed by each lamp unit of the left headlamp unit of FIG. 図１の左前照灯ユニットのロービーム照射用灯具ユニットの構成を拡大して示す横断面図である。It is a cross-sectional view which expands and shows the structure of the lamp unit for low beam irradiation of the left headlamp unit of FIG. 図１の左前照灯の遮蔽リフレクタに形成された複数の突起の作用について説明するための模式図である。It is a schematic diagram for demonstrating the effect | action of the some protrusion formed in the shielding reflector of the left headlamp of FIG. 図１の左前照灯ユニットのハイビーム照射用灯具ユニットの構成を拡大して示す横断面図である。It is a cross-sectional view which expands and shows the structure of the lamp unit for high beam irradiation of the left headlamp unit of FIG.
　添付の図面を参照しつつ本発明の実施形態例について以下詳細に説明する。なお以下の説明に用いる各図面では、各部材を認識可能な大きさとするために縮尺を適宜変更している。 DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In each drawing used in the following description, the scale is appropriately changed to make each member a recognizable size.
　本発明の一実施形態に係る車両用灯具の一例としての左前照灯ユニット１の一部を、水平面で切断して上方から見た構成を図１に示す。 FIG. 1 shows a configuration in which a part of a left headlamp unit 1 as an example of a vehicle lamp according to an embodiment of the present invention is cut along a horizontal plane and viewed from above.
　左前照灯ユニット１は車両左側の前端部に設置され、ランプボディ２および透光カバー３を備えている。透光カバー３は透光性を有する樹脂等によって形成され、金属または樹脂からなるランプボディ２の前端部に装着されて灯室４を区画形成する。灯室２内には、第１灯具ユニット１０、第２灯具ユニット２０、第３灯具ユニット３０、第４灯具ユニット４０、複合レンズ５０、および支持部材６０が配置されている。 The left headlight unit 1 is installed at the front end of the left side of the vehicle, and includes a lamp body 2 and a translucent cover 3. The translucent cover 3 is formed of a translucent resin or the like, and is attached to the front end portion of the lamp body 2 made of metal or resin to form the lamp chamber 4. In the lamp chamber 2, a first lamp unit 10, a second lamp unit 20, a third lamp unit 30, a fourth lamp unit 40, a compound lens 50, and a support member 60 are arranged.
　第１灯具ユニット１０は、車両の近距離前方を照明するロービームを照射するために用いられる。第２灯具ユニット２０は、前方の広範囲および遠方を比較的高い照度で照明するハイビームを照射するために用いられる。 1st lamp unit 10 is used in order to irradiate the low beam which illuminates the short distance front of a vehicle. The 2nd lamp unit 20 is used in order to irradiate the high beam which illuminates the front wide area and a distant place with comparatively high illumination intensity.
　第３灯具ユニット３０は、車両の左旋回時に車両の進行方向を補助的に照明するために、ロービーム照射領域の左方に光を照射するために用いられる。同様にして第４灯具ユニット４０は、車両の左旋回時に必要に応じて、第３灯具ユニット３０による照射領域のさらに左方に光を照射するために用いられる。すなわち第３灯具ユニット３０および第４灯具ユニット４０は、いわゆるコーナリングランプとして用いられる。 The third lamp unit 30 is used to irradiate light to the left of the low beam irradiation region in order to illuminate the traveling direction of the vehicle in an auxiliary manner when the vehicle turns left. Similarly, the fourth lamp unit 40 is used to irradiate light further to the left of the irradiation area by the third lamp unit 30 as necessary when the vehicle turns left. That is, the third lamp unit 30 and the fourth lamp unit 40 are used as so-called cornering lamps.
　複合レンズ５０は、第１投射レンズ部５１、第２投射レンズ部５２、第３投射レンズ部５３、および第４投射レンズ部５４が一体に成形された複合投射レンズとして構成されている。複合レンズ５０は、図示しないホルダを介して灯室４内の所定位置に支持されている。 The compound lens 50 is configured as a compound projection lens in which a first projection lens unit 51, a second projection lens unit 52, a third projection lens unit 53, and a fourth projection lens unit 54 are integrally molded. The compound lens 50 is supported at a predetermined position in the lamp chamber 4 through a holder (not shown).
　支持部材６０は熱伝導性の高い金属等の材料からなり、姿勢調整ねじ５１を介してランプボディ２に支持されている。各灯具ユニットの光軸合わせに際しては、姿勢調整ねじ５１を適宜回転させることにより、支持部材６０の複合レンズ５０に対する位置および姿勢を変化させることができる。 The support member 60 is made of a material such as a metal having high thermal conductivity, and is supported by the lamp body 2 via the attitude adjusting screw 51. When aligning the optical axis of each lamp unit, the position and posture of the support member 60 relative to the compound lens 50 can be changed by appropriately rotating the posture adjusting screw 51.
　ロービーム照射用の第１灯具ユニット１０は、第１発光素子１１、第１遮蔽リフレクタ１２、楕円面リフレクタ１３、シェード１４、およびホルダ１５を備え、これらと複合レンズ５０の第１投射レンズ部５１により構成されている。 The first lamp unit 10 for low beam irradiation includes a first light emitting element 11, a first shielding reflector 12, an ellipsoidal reflector 13, a shade 14, and a holder 15, and these and a first projection lens unit 51 of the compound lens 50. It is configured.
　第１投射レンズ部５１は、車両前後方向に延びる光軸Ａｘ上に配置されている。第１投射レンズ部５１は、前方（車両外側）が凸面の出射面５１ａとされ、後方（車両内側）も凸面の入射面５１ｂとされた両凸非球面レンズを形成している。 The 1st projection lens part 51 is arrange | positioned on the optical axis Ax extended in a vehicle front-back direction. The first projection lens unit 51 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 51a and the rear (vehicle inner side) is also a convex incident surface 51b.
　第１発光素子１１は、白色発光ダイオードである。第１発光素子１１は、第１投射レンズ部５１の後方焦点よりも後方に配置され、その発光面を鉛直上向きにしてホルダ１５に支持されている。 The first light emitting element 11 is a white light emitting diode. The first light emitting element 11 is disposed behind the rear focal point of the first projection lens unit 51 and is supported by the holder 15 with its light emitting surface facing vertically upward.
　ホルダ１５は、熱伝導性の高い金属等の材料からなり、支持部材６０の第１支持部６１ａに固定されている。第１支持部６１ａの後方には複数のフィンからなる第１放熱部６１ｂが形成されている。 The holder 15 is made of a material such as a metal having high thermal conductivity, and is fixed to the first support portion 61 a of the support member 60. A first heat radiating portion 61b composed of a plurality of fins is formed behind the first support portion 61a.
　第１遮蔽リフレクタ１２は、第１発光素子１１と第１投射レンズ部５１の間に配置された筒状の部材である。第１遮蔽リフレクタ１２の内壁面は光反射面とされており、複数の突起１６が形成されている。 The first shielding reflector 12 is a cylindrical member disposed between the first light emitting element 11 and the first projection lens unit 51. The inner wall surface of the first shielding reflector 12 is a light reflecting surface, and a plurality of protrusions 16 are formed.
　楕円面リフレクタ１３は、第１発光素子１１を上方から覆うドーム状の反射面を有しており、ホルダ１５上に固定されている。反射面は、第１発光素子１１から上方に出射された光を第１投射レンズ部５１へ向けて光軸Ａｘ寄りに反射させる形状とされている。具体的には、反射面の光軸Ａｘを含む水平面に沿う断面が、第１発光素子１１の発光中心１１ａを第１焦点とするとともに、第１投射レンズ部５１の後方焦点を第２焦点とする楕円形状とされている。 The ellipsoidal reflector 13 has a dome-like reflecting surface that covers the first light emitting element 11 from above, and is fixed on the holder 15. The reflecting surface has a shape that reflects light emitted upward from the first light emitting element 11 toward the first projection lens unit 51 toward the optical axis Ax. Specifically, the cross section along the horizontal plane including the optical axis Ax of the reflecting surface has the light emission center 11a of the first light emitting element 11 as the first focal point, and the rear focal point of the first projection lens unit 51 as the second focal point. It has an elliptical shape.
　上記のような形状を有する反射面は、第１発光素子１１から出射された光を第１投射レンズ部５１の後方焦点に収束させる。後方焦点を通過した光は第１投射レンズ部５１の入射面５１ｂに入射し、光Ｌ１として出射面５１ａを通過する。 The reflecting surface having the shape as described above converges the light emitted from the first light emitting element 11 to the rear focal point of the first projection lens unit 51. The light that has passed through the rear focal point is incident on the incident surface 51b of the first projection lens unit 51, and passes through the exit surface 51a as light L1.
　光Ｌ１によって、図２に符号ＰＬで示すロービームパターンが、車両前方に配置された仮想鉛直スクリーン上に形成される。ロービームパターンＰＬは、左側配光パターン（車両が左車線を走行することを義務付けられている地域において使用）であり、その上端縁に第１カットオフラインＣＬ１、第２カットオフラインＣＬ２、および第３カットオフラインＣＬ３を有している。 2, a low beam pattern indicated by a symbol PL in FIG. 2 is formed on a virtual vertical screen arranged in front of the vehicle. The low beam pattern PL is a left side light distribution pattern (used in an area where the vehicle is required to travel in the left lane), and has a first cut-off line CL1, a second cut-off line CL2, and a third cut at the upper edge. Has offline CL3.
　自車線側カットオフラインとして利用される第１カットオフラインＣＬ１と、対向車線側カットオフラインとして利用される第２カットオフラインＣＬ２は、鉛直線Ｖ－Ｖを境にして左右段違いで水平線Ｈ－Ｈ方向に延在している。第３カットオフラインＣＬ３は、第１カットオフラインＣＬ１の右端部から右下方に向かって斜めに延在し、第２カットオフラインＣＬ２の左端部に接続している。以降の説明においては、必要に応じて第１～３カットオフラインＣＬ１～ＣＬ３を「カットオフラインＣＬ」と総称する。 The first cut-off line CL1 used as the own lane-side cut-off line and the second cut-off line CL2 used as the oncoming lane-side cut-off line are arranged in the horizontal line HH direction with the vertical line VV as a boundary. It is extended. The third cutoff line CL3 extends obliquely downward from the right end of the first cutoff line CL1 and is connected to the left end of the second cutoff line CL2. In the following description, the first to third cut-off lines CL1 to CL3 are collectively referred to as “cut-off line CL” as necessary.
　カットオフラインＣＬは、楕円面リフレクタ１３の反射面により反射された光の一部がシェード１４により遮蔽されることにより、シェード１４の上端縁形状の反転投影像として形成されるものである。シェード１４は第１投射レンズ部５１の後方焦点の近傍に配置される。 The cut-off line CL is formed as a reverse projection image of the upper edge shape of the shade 14 by blocking a part of the light reflected by the reflecting surface of the ellipsoidal reflector 13 by the shade 14. The shade 14 is disposed in the vicinity of the rear focal point of the first projection lens unit 51.
　ハイビーム照射用の第２灯具ユニット２０は、第２発光素子２１、第２遮蔽リフレクタ２２、およびホルダ２３を備え、これらと複合レンズ５０の第２投射レンズ部５２により構成されている。第２投射レンズ部５２は、前方（車両外側）が凸面の出射面５２ａとされ、後方（車両内側）も凸面の入射面５２ｂとされた両凸非球面レンズを形成している。　 The second lamp unit 20 for high beam irradiation includes a second light emitting element 21, a second shielding reflector 22, and a holder 23, and is configured by the second projection lens unit 52 of the compound lens 50. The second projection lens unit 52 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 52a and the rear (vehicle inner side) is also a convex incident surface 52b. *
　第２発光素子２１は、白色発光ダイオードである。第２発光素子２１は、第２投射レンズ部５２の後方焦点近傍に配置され、その発光面を車両前方に向けてホルダ２３に支持されている。 The second light emitting element 21 is a white light emitting diode. The second light emitting element 21 is disposed in the vicinity of the rear focal point of the second projection lens unit 52 and supported by the holder 23 with its light emitting surface facing the front of the vehicle.
　ホルダ２３は、熱伝導性の高い金属等の材料からなり、支持部材６０の第２支持部６２ａに固定されている。第２支持部６２ａの後方には複数のフィンからなる第２放熱部６２ｂが形成されている。 The holder 23 is made of a material such as a metal having high thermal conductivity, and is fixed to the second support portion 62a of the support member 60. A second heat radiating portion 62b made of a plurality of fins is formed behind the second support portion 62a.
　第２遮蔽リフレクタ１２は、第２発光素子２１と第２投射レンズ部５２の間に配置された筒状の部材である。第２遮蔽リフレクタ２２の内壁面は光反射面とされており、複数の突起２６が形成されている。 The second shielding reflector 12 is a cylindrical member disposed between the second light emitting element 21 and the second projection lens unit 52. The inner wall surface of the second shielding reflector 22 is a light reflecting surface, and a plurality of protrusions 26 are formed.
　第２発光素子２１から出射された光は、第２投射レンズ部５２の入射面５２ｂに入射し、光Ｌ２として出射面５２ａを通過する。光Ｌ２によって、図２に符号ＰＨで示すハイビームパターンが、車両前方に配置された仮想鉛直スクリーン上に形成される。ハイビームパターンＰＨは、鉛直線Ｖ－Ｖと水平線Ｈ－Ｈの交点近傍を中心として上下左右に広がる配光パターンである。 The light emitted from the second light emitting element 21 enters the incident surface 52b of the second projection lens unit 52, and passes through the emitting surface 52a as the light L2. A high beam pattern indicated by reference sign PH in FIG. 2 is formed on the virtual vertical screen disposed in front of the vehicle by the light L2. The high beam pattern PH is a light distribution pattern that spreads in the vertical and horizontal directions around the intersection of the vertical line VV and the horizontal line HH.
　コーナリングランプ用の第３灯具ユニット３０は、第３発光素子３１、第３遮蔽リフレクタ３２、およびホルダ３３を備え、これらと複合レンズ５０の第３投射レンズ部５３により構成されている。第３投射レンズ部５３は、前方（車両外側）が凸面の出射面５３ａとされ、後方（車両内側）も凸面の入射面５３ｂとされた両凸非球面レンズを形成している。 The third lamp unit 30 for a cornering lamp includes a third light emitting element 31, a third shielding reflector 32, and a holder 33, and is configured by the third projection lens unit 53 of the compound lens 50. The third projection lens unit 53 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 53a and the rear (vehicle inner side) is also a convex incident surface 53b.
　第３発光素子３１は、白色発光ダイオードである。第３発光素子３１は、第３投射レンズ部５３の後方焦点近傍に配置され、その発光面を車両前方に向けてホルダ３３に支持されている。 The third light emitting element 31 is a white light emitting diode. The third light emitting element 31 is disposed in the vicinity of the rear focal point of the third projection lens unit 53 and supported by the holder 33 with its light emitting surface facing the front of the vehicle.
　ホルダ３３は、熱伝導性の高い金属等の材料からなり、支持部材６０の第３支持部６３ａに固定されている。第３支持部６３ａの後方には複数のフィンからなる第３放熱部６３ｂが形成されている。 The holder 33 is made of a material such as a metal having high thermal conductivity, and is fixed to the third support portion 63a of the support member 60. A third heat radiating portion 63b composed of a plurality of fins is formed behind the third support portion 63a.
　第３遮蔽リフレクタ３２は、第３発光素子３１と第３投射レンズ部５３の間に配置された筒状の部材である。第３遮蔽リフレクタ３２の内壁面は光反射面とされており、複数の突起３６が形成されている。 The third shielding reflector 32 is a cylindrical member disposed between the third light emitting element 31 and the third projection lens unit 53. The inner wall surface of the third shielding reflector 32 is a light reflecting surface, and a plurality of protrusions 36 are formed.
　第３発光素子３１から出射された光は、第３投射レンズ部５３の入射面５３ｂに入射し、光Ｌ３として出射面５３ａを通過する。光Ｌ３によって、図２に符号ＰＣ１で示す第１コーナリングパターンが、車両前方に配置された仮想鉛直スクリーン上に形成される。第１コーナリングパターンＰＣ１は、車両の左旋回時においてハイビームパターンＰＨに加えあるいは代えて、ハイビームパターンＰＨの左方に形成される配光パターンである。 The light emitted from the third light emitting element 31 enters the incident surface 53b of the third projection lens unit 53, and passes through the emitting surface 53a as light L3. A first cornering pattern indicated by reference numeral PC1 in FIG. 2 is formed on the virtual vertical screen disposed in front of the vehicle by the light L3. The first cornering pattern PC1 is a light distribution pattern formed on the left side of the high beam pattern PH in addition to or instead of the high beam pattern PH when the vehicle turns left.
　コーナリングランプ用の第４灯具ユニット４０は、第４発光素子４１、第４遮蔽リフレクタ４２、およびホルダ４３を備え、これらと複合レンズ５０の第４投射レンズ部５４により構成されている。第４投射レンズ部５４は、前方（車両外側）が凸面の出射面５４ａとされ、後方（車両内側）も凸面の入射面５４ｂとされた両凸非球面レンズを形成している。 The fourth lamp unit 40 for the cornering lamp includes a fourth light emitting element 41, a fourth shielding reflector 42, and a holder 43, and is configured by the fourth projection lens unit 54 of the compound lens 50. The fourth projection lens unit 54 forms a biconvex aspheric lens in which the front (vehicle outer side) is a convex emission surface 54a and the rear (vehicle inner side) is also a convex incident surface 54b.
　第４発光素子４１は、白色発光ダイオードである。第４発光素子４１は、第４投射レンズ部５４の後方焦点近傍に配置され、その発光面を車両の左斜め前方に向けてホルダ４３に支持されている。 The fourth light emitting element 41 is a white light emitting diode. The 4th light emitting element 41 is arrange | positioned in the back focal vicinity of the 4th projection lens part 54, and the light emitting surface is supported by the holder 43 toward the diagonally left front of the vehicle.
　ホルダ４３は、熱伝導性の高い金属等の材料からなり、支持部材６０の第４支持部６４ａに固定されている。第４支持部６４ａの後方には複数のフィンからなる第４放熱部６４ｂが形成されている。 The holder 43 is made of a material such as a metal having high thermal conductivity, and is fixed to the fourth support portion 64a of the support member 60. A fourth heat radiating portion 64b made of a plurality of fins is formed behind the fourth support portion 64a.
　第４遮蔽リフレクタ４２は、第４発光素子４１と第４投射レンズ部５４の間に配置された筒状の部材である。第４遮蔽リフレクタ４２の内壁面は光反射面とされており、複数の突起４６が形成されている。 The fourth shielding reflector 42 is a cylindrical member disposed between the fourth light emitting element 41 and the fourth projection lens unit 54. The inner wall surface of the fourth shielding reflector 42 is a light reflecting surface, and a plurality of protrusions 46 are formed.
　第４発光素子４１から出射された光は、第４投射レンズ部５４の入射面５４ｂに入射し、光Ｌ４として出射面５４ａを通過する。光Ｌ４によって、図２に符号ＰＣ２で示す第２コーナリングパターンが、車両前方に配置された仮想鉛直スクリーン上に形成される。第２コーナリングパターンＰＣ１は、車両の左旋回時において第１コーナリングパターンＰＣ１に加えあるいは代えて、第１コーナリングパターンＰＣ１の左方に形成される配光パターンである。 The light emitted from the fourth light emitting element 41 is incident on the incident surface 54b of the fourth projection lens unit 54 and passes through the emitting surface 54a as light L4. A second cornering pattern indicated by reference numeral PC2 in FIG. 2 is formed on the virtual vertical screen arranged in front of the vehicle by the light L4. The second cornering pattern PC1 is a light distribution pattern formed on the left side of the first cornering pattern PC1 in addition to or instead of the first cornering pattern PC1 when the vehicle turns left.
　車両右側の前端部には、上記の左前照灯ユニット１と左右対称の構成を有する右前照灯ユニットが配置される。ロービームパターンＰＬおよびハイビームパターンＰＨは、それぞれ左右の前照灯ユニットにおける第１灯具ユニット１０および第２灯具ユニット２０から照射される光の合成により形成される。右前照灯ユニットにおける第３灯具ユニット３０および第４灯具ユニット４０は、車両の右旋回時に進行方向を必要に応じて補助的に照明するコーナリングランプとして用いられる。 The right headlight unit having a symmetrical configuration with the left headlight unit 1 is disposed at the front end portion on the right side of the vehicle. The low beam pattern PL and the high beam pattern PH are formed by combining light emitted from the first lamp unit 10 and the second lamp unit 20 in the left and right headlamp units, respectively. The third lamp unit 30 and the fourth lamp unit 40 in the right headlamp unit are used as cornering lamps that supplementarily illuminate the traveling direction as necessary when the vehicle turns right.
　次に図３を参照しつつ、第１灯具ユニット１０が備える第１遮蔽リフレクタ１２の構成について詳細に説明する。第１リフレクタの一例としての第１遮蔽リフレクタ１２は、光源の一例としての第１発光素子１１と、レンズの一例としての第１投射レンズ部５１の間に配置されている。 Next, the configuration of the first shielding reflector 12 included in the first lamp unit 10 will be described in detail with reference to FIG. The 1st shielding reflector 12 as an example of a 1st reflector is arrange | positioned between the 1st light emitting element 11 as an example of a light source, and the 1st projection lens part 51 as an example of a lens.
　光反射面である第１遮蔽リフレクタ１２の内壁面には、複数の突起１６が形成されている。複数の突起１６は、第１発光素子１１の発光中心１１ａと第１投射レンズ部５１の入射面５１ｂの端縁５１ｃを結ぶ仮想線１７に向かって突出している。また複数の突起１６は、第１発光素子１１からの光の出射方向に沿って規則的に配列されている。 A plurality of protrusions 16 are formed on the inner wall surface of the first shielding reflector 12 which is a light reflecting surface. The plurality of protrusions 16 protrude toward an imaginary line 17 that connects the light emission center 11 a of the first light emitting element 11 and the edge 51 c of the incident surface 51 b of the first projection lens unit 51. The plurality of protrusions 16 are regularly arranged along the light emission direction from the first light emitting element 11.
　遮蔽リフレクタ１２と第１発光素子１１の間に配置された楕円面リフレクタ１３は、第２リフレクタの一例として機能する。すなわち、第１発光素子１１から出射される光の一部は、楕円面リフレクタ１３の反射面によって第１発光素子１１と第１投射レンズ部５１の間に収束された後、入射面５１ｂに入射する。この入射光は、楕円面リフレクタ１３により指向性を制御されているため、隣接する第２灯具ユニット２０の光学系に侵入することはない。 The ellipsoidal reflector 13 disposed between the shielding reflector 12 and the first light emitting element 11 functions as an example of the second reflector. That is, a part of the light emitted from the first light emitting element 11 is converged between the first light emitting element 11 and the first projection lens unit 51 by the reflecting surface of the ellipsoidal reflector 13, and then enters the incident surface 51b. To do. Since the incident light is controlled in directivity by the ellipsoidal reflector 13, it does not enter the optical system of the adjacent second lamp unit 20.
　第１発光素子１１から出射された光の別の一部は、仮想線１７の内側の空間を通過して入射面５１ｂに入射する、いわゆる直接入射光である。この入射光もまた隣接する第２灯具ユニット２０の光学系に侵入することはない。 Another part of the light emitted from the first light emitting element 11 is so-called direct incident light that passes through the space inside the virtual line 17 and enters the incident surface 51b. This incident light also does not enter the optical system of the adjacent second lamp unit 20.
　第１発光素子１１から出射された光は、楕円面リフレクタ１３によって反射されることもなく入射面５１ｂに直接入射することもない光を含んでいる。すなわち仮想線１７の外側を進行しつつ楕円面リフレクタ１３の反射にも供されない光である。このような配光制御を受けない光は、入射面５１ｂに入射することなく隣接する第２灯具ユニット２０の光学系に侵入するおそれがある。 The light emitted from the first light emitting element 11 includes light that is not reflected by the ellipsoidal reflector 13 and does not directly enter the incident surface 51b. That is, the light travels outside the virtual line 17 and is not used for reflection by the ellipsoidal reflector 13. Light that is not subjected to such light distribution control may enter the optical system of the adjacent second lamp unit 20 without entering the incident surface 51b.
　本実施形態の複数の突起１６は、このような光を捕捉するために設けられている。図４は、この捕捉作用について説明するための模式図であり、説明の便宜のために各部材の縮尺は適宜変更している。 The plurality of protrusions 16 of the present embodiment are provided to capture such light. FIG. 4 is a schematic diagram for explaining the capturing action, and the scale of each member is appropriately changed for convenience of explanation.
　同図に示すように、複数の突起１６のそれぞれは、傾斜面１６ａと傾斜面１６ｂにより形成される先端１６ｃを有している。各傾斜面１６ａ同士、各傾斜面１６ｂ同士はそれぞれ同一の傾斜角とされることにより、複数の突起１６の配列の規則性が確保されている。　 As shown in the figure, each of the plurality of protrusions 16 has a tip 16c formed by an inclined surface 16a and an inclined surface 16b. Since the inclined surfaces 16a and the inclined surfaces 16b have the same inclination angle, the regularity of the arrangement of the plurality of protrusions 16 is ensured. *
　仮想線１７の外側の空間を進行し、楕円面リフレクタ１３の反射にも供されない光は、複数の傾斜面１６ａのいずれかにより反射され、さらに当該傾斜面１６ａに対向する傾斜面１６ｂによって反射される。そのような光の一部は突起１６の谷間で反射を繰り返しながら減衰する。別の光の一部は、再び第１発光素子１１と第１投射レンズ部５１の間の空間に進入するものの、複数回の反射を経ることによって光度は大幅に減衰されている。また別の光の一部は、遮蔽リフレクタ１２の後方へと反射されて出射光としての指向性を失う。 The light that travels outside the imaginary line 17 and is not used for reflection by the ellipsoidal reflector 13 is reflected by one of the plurality of inclined surfaces 16a and further reflected by the inclined surface 16b that faces the inclined surface 16a. The A part of such light attenuates while being repeatedly reflected in the valleys of the protrusions 16. A part of the other light again enters the space between the first light emitting element 11 and the first projection lens unit 51, but the light intensity is greatly attenuated through a plurality of reflections. Further, a part of the other light is reflected to the rear of the shielding reflector 12 and loses directivity as outgoing light.
　反射光の一部は、わずかながら第１投射レンズ部５１と遮蔽リフレクタ１２の前端部の隙間１９に到達しうるが、複数の突起１６により多数回の反射を経ているため光度は十分に減衰されており、隣接する第２灯具ユニット２０の光学系に与える影響はほとんどない。 A part of the reflected light can slightly reach the gap 19 between the first projection lens unit 51 and the front end of the shielding reflector 12, but the light intensity is sufficiently attenuated because it is reflected many times by the plurality of protrusions 16. Therefore, there is almost no influence on the optical system of the adjacent second lamp unit 20.
　したがって本実施形態の遮蔽リフレクタ１２によれば、第１発光素子１１から出射された光の一部が、配光制御を受けることなく第２の灯具ユニット２０の第２投射レンズ部５２に侵入することを防止できる。したがってロービームとして照射される光の一部がハイビームの照射領域に侵入し、前走車にグレアを与えてしまうといった不具合の発生を防止することができる。 Therefore, according to the shielding reflector 12 of the present embodiment, part of the light emitted from the first light emitting element 11 enters the second projection lens unit 52 of the second lamp unit 20 without being subjected to light distribution control. Can be prevented. Therefore, it is possible to prevent the occurrence of a problem that part of the light irradiated as the low beam enters the high beam irradiation area and gives glare to the preceding vehicle.
　全ての突起１６の先端１６ｃは、第１発光素子１１の発光中心１１ａと第１投射レンズ部５１の入射面５１ｂの端縁５１ｃを結ぶ仮想線１７の外側に配置されているため、発光素子１１が本来意図している配光を妨げることがない。したがって所望の配光パターンを得つつ、不要な光のみを効果的に除去することができる。 The tips 16 c of all the protrusions 16 are disposed outside the imaginary line 17 that connects the light emission center 11 a of the first light emitting element 11 and the edge 51 c of the incident surface 51 b of the first projection lens unit 51. Does not interfere with the light distribution originally intended. Therefore, it is possible to effectively remove only unnecessary light while obtaining a desired light distribution pattern.
　特に本実施形態のように、第１投射レンズ部５１と第２投射レンズ部５２が複合レンズ５０として一体成形されてレンズ間距離が小さい場合においても、隣接する灯具ユニットへの不要な光の侵入を確実に防止できる。換言すると、侵入光を気にすることなく隣接する灯具ユニット同士をできる限り接近させることが可能であり、前照灯ユニット全体の小型化にも寄与する。 In particular, as in this embodiment, even when the first projection lens unit 51 and the second projection lens unit 52 are integrally molded as the compound lens 50 and the distance between the lenses is small, unnecessary light enters the adjacent lamp unit. Can be reliably prevented. In other words, it is possible to make adjacent lamp units as close as possible without worrying about intrusion light, which contributes to miniaturization of the entire headlamp unit.
　次に図５を参照しつつ、第２灯具ユニット２０が備える第２遮蔽リフレクタ２２の構成について詳細に説明する。第１リフレクタの一例としての第２遮蔽リフレクタ２２は、光源の一例としての第２発光素子２１と、レンズの一例としての第２投射レンズ部５２の間に配置されている。 Next, the configuration of the second shielding reflector 22 provided in the second lamp unit 20 will be described in detail with reference to FIG. The 2nd shielding reflector 22 as an example of a 1st reflector is arrange | positioned between the 2nd light emitting element 21 as an example of a light source, and the 2nd projection lens part 52 as an example of a lens.
　光反射面である第２遮蔽リフレクタ２２の内壁面には、複数の突起２６が形成されている。複数の突起２６は、第２発光素子２１の発光中心２１ａと第２投射レンズ部５２の入射面５２ｂの端縁５２ｃを結ぶ仮想線２７に向かって突出している。また複数の突起２６は、第２発光素子２１からの光の出射方向に沿って規則的に配列されている。 A plurality of protrusions 26 are formed on the inner wall surface of the second shielding reflector 22 which is a light reflecting surface. The plurality of protrusions 26 protrude toward an imaginary line 27 that connects the light emission center 21 a of the second light emitting element 21 and the edge 52 c of the incident surface 52 b of the second projection lens unit 52. The plurality of protrusions 26 are regularly arranged along the light emission direction from the second light emitting element 21.
　第２発光素子２１から出射された光の一部は、仮想線２７の内側の空間を通過して入射面５２ｂに入射する、いわゆる直接入射光である。この入射光は隣接する第１灯具ユニット１０および第３灯具ユニット３０の光学系に侵入することはない。 Part of the light emitted from the second light emitting element 21 is so-called direct incident light that passes through the space inside the virtual line 27 and enters the incident surface 52b. This incident light does not enter the optical system of the adjacent first lamp unit 10 and third lamp unit 30.
　第２発光素子２１から出射された光は、入射面５２ｂに直接入射することのない光を含んでいる。すなわち仮想線２７の外側を進行する光は、配光制御を受けることなく、隣接する第１灯具ユニット１０および第３灯具ユニット３０の光学系に侵入するおそれがある。 The light emitted from the second light emitting element 21 includes light that does not directly enter the incident surface 52b. That is, the light traveling outside the virtual line 27 may enter the optical system of the adjacent first lamp unit 10 and third lamp unit 30 without being subjected to light distribution control.
　本実施形態の複数の突起２６は、このような光を捕捉するために設けられている。複数の突起２６の具体的な構成および作用は、図４を参照して説明した第１遮蔽リフレクタ１２と同じであるため、繰り返しとなる説明は割愛する。 The plurality of protrusions 26 of the present embodiment are provided to capture such light. Since the specific configuration and operation of the plurality of protrusions 26 are the same as those of the first shielding reflector 12 described with reference to FIG. 4, repeated description is omitted.
　第３灯具ユニット３０が備える第３遮蔽リフレクタ３２、および第４灯具ユニットが備える第４遮蔽リフレクタ４２は、第２灯具ユニット２０が備える第２遮蔽リフレクタ２２と同様の構成を備えている。複数の突起３６、４６の具体的構成および作用は、図４を参照して説明した第１遮蔽リフレクタ１２と同じであるため、繰り返しとなる説明は割愛する。 The third shielding reflector 32 included in the third lamp unit 30 and the fourth shielding reflector 42 included in the fourth lamp unit have the same configuration as the second shielding reflector 22 included in the second lamp unit 20. Since the specific configuration and operation of the plurality of protrusions 36 and 46 are the same as those of the first shielding reflector 12 described with reference to FIG. 4, repeated description is omitted.
　上記の実施形態は本発明の理解を容易にするためのものであって、本発明を限定するものではない。本発明は、その趣旨を逸脱することなく変更・改良され得ると共に、本発明にはその等価物が含まれることは明らかである。 The above embodiment is for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit of the present invention, and it is obvious that the present invention includes equivalents thereof.
　各灯具ユニットが備える光源としての発光素子は、白色発光ダイオードに限られるものではない。レーザダイオード等を用いることもできる。 The light emitting element as a light source provided in each lamp unit is not limited to a white light emitting diode. A laser diode or the like can also be used.
　光源から出射された光が通過するレンズは、投射レンズに限られるものではない。所望の配光パターンが得られるのであれば、周知のレンズを適宜採用することができる。 The lens through which the light emitted from the light source passes is not limited to the projection lens. If a desired light distribution pattern can be obtained, a known lens can be appropriately employed.
　複数の突起１６の形状は、図４に示したものに限られない。例えば尖った先端１６ｃにより区画される傾斜面１６ａと１６ｂによって各突起１６が形成されている必要はない。配列の規則性が確保されていれば、複数の突起１６により形成される谷部と稜部の少なくとも一方は湾曲形状としてもよい。 The shape of the plurality of protrusions 16 is not limited to that shown in FIG. For example, the protrusions 16 do not have to be formed by the inclined surfaces 16a and 16b defined by the sharp tip 16c. As long as the regularity of the arrangement is ensured, at least one of a trough and a ridge formed by the plurality of protrusions 16 may have a curved shape.
　また各突起１６の一部により反射される光に対し、別の突起１６の一部に向かう指向性を積極的に与えることができるのであれば、各突起１６の形状および寸法は適宜に定めることができる。すなわち本発明における「反射面」は、反射光に無指向性を与える散乱面とは区別される。 In addition, the shape and dimensions of each protrusion 16 should be determined as appropriate as long as the directivity toward a part of another protrusion 16 can be positively given to the light reflected by a part of each protrusion 16. Can do. In other words, the “reflecting surface” in the present invention is distinguished from a scattering surface that gives non-directionality to reflected light.
　図１を参照して第１灯具ユニット１０と第２灯具ユニット２０に着目すると、第１遮蔽リフレクタ１２と第２遮蔽リフレクタ２２のうち第１発光素子１１と第２発光素子２１の間に位置する壁部１２ａと２２ａは、隣接する灯具ユニットの光学系を隔てる隔壁部としての機能を有している。 Focusing on the first lamp unit 10 and the second lamp unit 20 with reference to FIG. 1, the first and second shielding reflectors 12 and 22 are located between the first light emitting element 11 and the second light emitting element 21. Wall part 12a and 22a have a function as a partition part which separates the optical system of an adjacent lamp unit.
　すなわち、車両用灯具としての左前照灯ユニット１は、レンズ部としての複合レンズ５０を備えている。複合レンズ５０は第１レンズの一例としての第１投射レンズ部５１と第２レンズの一例としての第２投射レンズ部５２を有している。第１光源の一例としての第１発光素子１１は、第１投射レンズ部５１を通じて光を照射し、第２光源の一例としての第２発光素子２１は、第２投射レンズ部５２を通じて光を照射する。隔壁部は、第１発光素子１１と第１投射レンズ部５１の間の第１空間１８と、第２発光素子２１と第２投射レンズ部５２の間の第２空間２８とを隔てている。 That is, the left headlamp unit 1 as a vehicular lamp includes a compound lens 50 as a lens unit. The compound lens 50 includes a first projection lens unit 51 as an example of a first lens and a second projection lens unit 52 as an example of a second lens. The first light emitting element 11 as an example of the first light source emits light through the first projection lens unit 51, and the second light emitting element 21 as an example of the second light source emits light through the second projection lens unit 52. To do. The partition part separates the first space 18 between the first light emitting element 11 and the first projection lens part 51 and the second space 28 between the second light emitting element 21 and the second projection lens part 52.
　隔壁部は、第１空間１８に向かって突出する複数の突起１６と、第２空間２８に向かって突出する複数の突起２６とを備えている。図２に示すように、複数の突起１６の先端１６ｃは、第１発光素子１１の発光中心１１ａと第１投射レンズ部５１の入射面５１ｂの端縁５１ｃを結ぶ仮想線１７の外側に配置されている。また図４に示すように、複数の突起２６の先端２６ｃは、第２発光素子２１の発光中心２１ａと第２投射レンズ部５２の入射面５２ｂの端縁５２ｃを結ぶ仮想線２７の外側に配置されている。 The partition wall includes a plurality of protrusions 16 protruding toward the first space 18 and a plurality of protrusions 26 protruding toward the second space 28. As shown in FIG. 2, the tips 16 c of the plurality of protrusions 16 are disposed outside the virtual line 17 that connects the light emission center 11 a of the first light emitting element 11 and the edge 51 c of the incident surface 51 b of the first projection lens unit 51. ing. As shown in FIG. 4, the tips 26 c of the plurality of protrusions 26 are arranged outside the virtual line 27 that connects the light emission center 21 a of the second light emitting element 21 and the edge 52 c of the incident surface 52 b of the second projection lens unit 52. Has been.
　隔壁部という機能の観点からは、壁部１２ａと２２ａは別体として設けられている必要はなく、一体の部材として構成されていてもよい。また各遮蔽リフレクタの内壁面全面に突起が形成されていることを要しない。少なくとも隣接する発光素子と投射レンズ部の間の空間同士を隔てる隔壁部として機能する部分に複数の突起が形成されていればよい。 From the viewpoint of the function of the partition wall portion, the wall portions 12a and 22a do not have to be provided separately, and may be configured as an integral member. Further, it is not necessary that protrusions are formed on the entire inner wall surface of each shielding reflector. A plurality of protrusions may be formed at least in a portion functioning as a partition wall that separates the spaces between the adjacent light emitting element and the projection lens unit.
　この場合、各灯具ユニットが配列される方向は、上記実施形態のように水平方向に限られず、鉛直方向であってもよい。また第１レンズおよび第２レンズとしての隣接する投射レンズは、上記実施形態のように一体成形されている必要はなく、別体の複数のレンズが設けられる構成としてもよい。 In this case, the direction in which the lamp units are arranged is not limited to the horizontal direction as in the above embodiment, but may be the vertical direction. Further, the adjacent projection lenses as the first lens and the second lens do not need to be integrally molded as in the above-described embodiment, and may be configured to be provided with a plurality of separate lenses.
　第１灯具ユニット１０、第２灯具ユニット２０、第３灯具ユニット３０、および第４灯具ユニット４０の照明機能は、上記実施形態のようにそれぞれロービーム照射用、ハイビーム照射用、第１コーナリングランプ用、および第２コーナリングランプ用に対応付けられている必要はない。隣接する光源が異なる領域に光を照射するものであれば、これらを適宜の順に並び替えることができるし、昼間点灯用、方向指示用、車幅灯用等のその他の照明機能に対応付けることもできる。 The illumination functions of the first lamp unit 10, the second lamp unit 20, the third lamp unit 30, and the fourth lamp unit 40 are respectively for low beam irradiation, high beam irradiation, and first cornering lamp as in the above embodiment. And it is not necessary to be associated with the second cornering lamp. If adjacent light sources irradiate light to different areas, they can be rearranged in an appropriate order, and can be associated with other lighting functions such as daytime lighting, direction indication, and width lights. it can.
　上記の第１光源および第２光源は、必ずしもそれぞれ第１発光素子１１および第２発光素子に対応付けられることを要しない。第１発光素子１１、第２発光素子２１、第３発光素子３１、および第４発光素子４１から隣接する任意の一組を選ぶことができる。 The first light source and the second light source do not necessarily need to be associated with the first light emitting element 11 and the second light emitting element, respectively. An arbitrary set of adjacent ones from the first light emitting element 11, the second light emitting element 21, the third light emitting element 31, and the fourth light emitting element 41 can be selected.
　本出願は、２０１２年２月７日に提出された日本国特許出願２０１２－０２４１３５に基づいており、その内容はここに参照として取り込まれる。 This application is based on Japanese Patent Application 2012-024135 filed on February 7, 2012, the contents of which are incorporated herein by reference.

Claims (5)

  1. 　光源と、
    　前記光源から出射された光が通過するレンズと、
    　前記光源と前記レンズの間に配置された第１リフレクタとを備え、
    　前記第１リフレクタの光反射面には、前記光源の発光中心と前記レンズの入射面の端縁を結ぶ仮想線に向かって突出する複数の突起が形成されており、
    　前記複数の突起は前記光の出射方向に沿って規則的に配列されている、灯具ユニット。     A light source;
    A lens through which light emitted from the light source passes;
    A first reflector disposed between the light source and the lens;
    The light reflecting surface of the first reflector is formed with a plurality of protrusions protruding toward an imaginary line connecting the light emission center of the light source and the edge of the incident surface of the lens,
    The lamp unit, wherein the plurality of protrusions are regularly arranged along the light emission direction.
  2. 　前記光源と前記第１リフレクタの間に配置され、前記光源から出射された光の一部を前記光源と前記レンズの間に収束させる第２リフレクタをさらに備える、請求項１に記載の灯具ユニット。 The lamp unit according to claim 1, further comprising a second reflector that is disposed between the light source and the first reflector and converges a part of light emitted from the light source between the light source and the lens.
  3. 　第１レンズと第２レンズを有するレンズ部と、
    　前記第１レンズを通じて光を照射する第１光源と、
    　前記第２レンズを通じて光を照射する第２光源と、
    　前記第１光源と前記第１レンズの間の第１空間と、前記第２光源と前記第２レンズの間の第２空間とを隔てる隔壁部とを備え、
    　前記隔壁部は、前記第１空間および前記第２空間に向かって突出する複数の突起を有し、
    　前記複数の突起の先端は、前記第１光源の発光中心と前記第１レンズの入射面の端縁を結ぶ仮想線の外側、および前記第２光源の発光中心と前記第２レンズの入射面の端縁を結ぶ仮想線の外側に配置されている、車両用灯具。     A lens portion having a first lens and a second lens;
    A first light source that emits light through the first lens;
    A second light source that emits light through the second lens;
    A partition that separates a first space between the first light source and the first lens and a second space between the second light source and the second lens;
    The partition wall has a plurality of protrusions protruding toward the first space and the second space,
    The tips of the plurality of protrusions are outside the imaginary line connecting the emission center of the first light source and the edge of the incident surface of the first lens, and between the emission center of the second light source and the incident surface of the second lens. A vehicular lamp that is arranged outside an imaginary line connecting edges.
  4. 　前記第１レンズと前記第２レンズは一体に成形されている、請求項３に記載の車両用灯具。 The vehicle lamp according to claim 3, wherein the first lens and the second lens are integrally molded.
  5. 　前記第１光源と前記第２光源は、異なる領域に光を照射するものである、請求項３または４に記載の車両用灯具。 The vehicle lamp according to claim 3 or 4, wherein the first light source and the second light source irradiate light to different areas.
PCT/JP2013/052100 2012-02-07 2013-01-30 Lamp unit and vehicle lamp WO2013118625A1 (en)

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