WO2023048043A1 - Vehicular lamp - Google Patents

Vehicular lamp Download PDF

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Publication number
WO2023048043A1
WO2023048043A1 PCT/JP2022/034387 JP2022034387W WO2023048043A1 WO 2023048043 A1 WO2023048043 A1 WO 2023048043A1 JP 2022034387 W JP2022034387 W JP 2022034387W WO 2023048043 A1 WO2023048043 A1 WO 2023048043A1
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WO
WIPO (PCT)
Prior art keywords
light
emitting elements
light emitting
projection lens
distribution pattern
Prior art date
Application number
PCT/JP2022/034387
Other languages
French (fr)
Japanese (ja)
Inventor
真紀子 小又
麻希子 末次
Original Assignee
株式会社小糸製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2021153004A external-priority patent/JP2023044895A/en
Priority claimed from JP2021190929A external-priority patent/JP2023077596A/en
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 WO2023048043A1 publication Critical patent/WO2023048043A1/en

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    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • 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
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/165—Arrangement or contour of the emitted light for high-beam region or low-beam region the borderlines between emitted regions and dark regions other than cut-off lines being variable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/20—Illuminance distribution within the emitted light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a vehicle lamp equipped with a projection lens.
  • Patent Document 1 as a configuration of such a vehicle lamp, a plurality of light emitting elements are arranged in a state in which a plurality of light emitting elements are arranged in a horizontal direction with a light emitting surface facing a projection lens, and a plurality of light emitting elements and a projection lens to form a cut-off line of a low-beam light distribution pattern.
  • the low-beam light distribution pattern formed by the direct light emitted from the plurality of light-emitting elements and incident on the projection lens is considerably brighter in its lower region.
  • the short-distance area becomes too bright, making it difficult to see the long-distance area. I can't do it.
  • the present invention has been made in view of such circumstances, and provides a vehicle lamp configured to irradiate light emitted from a plurality of light emitting elements toward the front of the lamp via a projection lens.
  • An object of the present invention is to provide a vehicular lamp capable of sufficiently ensuring forward visibility during illumination.
  • the invention of the present application is designed to achieve the above object by providing a configuration in which a predetermined second shade is additionally arranged.
  • the present invention attempts to achieve the above object by devising the configuration of the projection lens.
  • the vehicle lamp according to one aspect of the present invention includes: For a vehicle, comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens.
  • the plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens, A shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the low beam light distribution pattern, A second shade is arranged between the plurality of light emitting elements and the projection lens to block part of the direct light from the plurality of light emitting elements toward the upper region of the projection lens.
  • a vehicle lamp includes: For a vehicle, comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens.
  • the plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens,
  • a shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the low beam light distribution pattern,
  • a downward deflection section is formed in the upper region of the projection lens to deflect the direct light from the plurality of light emitting elements downward.
  • the specific arrangement and the number of arrangement are not particularly limited. .
  • shade is configured to form a cut-off line of a low-beam light distribution pattern by blocking part of the light emitted from a plurality of light-emitting elements, its specific arrangement and shape etc. are not particularly limited.
  • the specific arrangement and shape of the "second shade” are not particularly limited as long as they are configured to block part of the direct light from the plurality of light emitting elements toward the upper region of the projection lens. not something.
  • downward deflection section are not particularly limited as long as they are configured to deflect the direct light from the plurality of light emitting elements downward in the upper region of the projection lens. It may be formed on the front surface or the rear surface of the projection lens.
  • the above "upper region of the projection lens” means a region located above the optical axis of the projection lens.
  • a vehicular lamp has a configuration that forms a low-beam light distribution pattern by irradiating light emitted from a plurality of light-emitting elements toward the front of the lamp via a projection lens. Further, the plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens, and between the plurality of light emitting elements and the projection lens, a low beam light distribution pattern A shade is arranged to block part of the light emitted from the plurality of light emitting elements in order to form a cutoff line. A second shade is arranged between the plurality of light emitting elements and the projection lens to block part of the direct light from the plurality of light emitting elements toward the upper region of the projection lens. Therefore, the following effects can be obtained.
  • the reason why the lower area of the low-beam light distribution pattern becomes brighter than necessary is due to the direct light from the plurality of light-emitting elements entering the upper area of the projection lens. Therefore, it is possible to prevent the lower area of the low-beam light distribution pattern from becoming too bright by blocking part of the direct light from the plurality of light emitting elements toward the upper area of the projection lens with the second shade. can.
  • a vehicle lamp configured to irradiate emitted light from a plurality of light-emitting elements toward the front of the lamp via a projection lens
  • front visibility is sufficiently improved during low-beam illumination. can be secured.
  • a vehicle lamp includes a configuration that forms a low-beam light distribution pattern by irradiating light emitted from a plurality of light emitting elements toward the front of the lamp via a projection lens.
  • the plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens, and between the plurality of light emitting elements and the projection lens, a low beam light distribution pattern
  • a shade is arranged to block part of the light emitted from the plurality of light emitting elements in order to form a cutoff line.
  • a downward deflecting portion is formed in the upper region of the projection lens for downwardly deflecting light emitted from the plurality of light emitting elements. Therefore, the following effects can be obtained.
  • part of the direct light directed toward the upper region of the projection lens from the plurality of light-emitting elements is deflected downward by the downward deflecting unit and radiated forward of the lamp, so that the lower region of the low-beam light distribution pattern is Excessive brightness can be prevented in advance.
  • the light emitted from the downward deflecting portion can form the low-beam light distribution pattern as a light distribution pattern with a wide vertical width whose lower edge is extended downward.
  • the low-beam light distribution pattern is formed on the road surface in front of the lamp, it is possible to prevent the short distance area from becoming too bright and the long distance area from becoming difficult to see. It is possible to irradiate light up to a region in front of the lamp located closer to the lamp than the distance region. Thus, it is possible to sufficiently ensure forward visibility during low beam irradiation.
  • a vehicle lamp configured to irradiate emitted light from a plurality of light-emitting elements toward the front of the lamp via a projection lens
  • front visibility is sufficiently improved during low-beam illumination. can be secured.
  • FIG. 1 is a side sectional view showing a vehicle lamp according to a first embodiment of the present invention.
  • 2 is a view taken in the direction of arrow II in FIG. 1.
  • FIG. 3 is a cross-sectional view taken along line III--III in FIG. 4A is a diagram showing a low-beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG. 1.
  • FIG. 4B is a diagram showing a comparative example of FIG. 4A.
  • FIG. 5A is a diagram showing the illuminance distribution of the low-beam light distribution pattern shown in FIG. 4A.
  • FIG. 5B is a diagram showing a comparative example of FIG. 5A.
  • FIG. 6A is a diagram showing a high beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG. 1.
  • FIG. FIG. 6B is a diagram showing a state in which a part of the high beam light distribution pattern shown in FIG. 6A is missing.
  • FIG. 7 is a view similar to FIG. 3, showing a first modification of the first embodiment;
  • FIG. 8 is a view similar to FIG. 3, showing a second modification of the first embodiment;
  • FIG. 9A is a view similar to FIG. 4A showing the action of the second modification of the first embodiment;
  • FIG. 9B is a diagram showing a comparative example of FIG. 9A.
  • FIG. 10A is a view similar to FIG. 5A showing the action of the second modification of the first embodiment;
  • FIG. 10A is a view similar to FIG. 5A showing the action of the second modification of the first embodiment;
  • FIG. 5A showing the action of the second modification of the first embodiment
  • FIG. 10B is a diagram showing a comparative example of FIG. 10A.
  • FIG. 11 is a view similar to FIG. 3, showing a third modification of the first embodiment;
  • FIG. 12 is a side sectional view showing a vehicle lamp according to a second embodiment of the present invention.
  • 13 is a view in the direction of arrow XIII in FIG. 12.
  • FIG. 14 is a cross-sectional view taken along line XIV-XIV of FIG. 13.
  • FIG. 15A is a diagram showing a low-beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG. 12.
  • FIG. FIG. 15B is a view similar to FIG. 15A showing a comparative example of the second embodiment.
  • FIG. 16 is a diagram showing a high beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG.
  • FIG. 17 is a view similar to FIG. 13, showing a first modification of the second embodiment
  • FIG. 18A is a diagram showing the action of the first modification of the second embodiment, similar to FIG. 15A.
  • FIG. 18B is a diagram similar to FIG. 16 showing the action of the first modification of the second embodiment.
  • FIG. 19 is a view similar to FIG. 14, showing a second modification of the second embodiment.
  • FIG. 20A is a view similar to FIG. 18A showing the action of the second modification of the second embodiment;
  • FIG. 20B is a view similar to FIG. 18B showing the action of the second modification of the second embodiment.
  • FIG. 21 is a view similar to FIG. 13, showing a third modification of the second embodiment;
  • FIG. 22 is a view similar to FIG. 14, showing a third modification of the second embodiment;
  • FIG. 1 is a side sectional view showing a vehicle lamp 10 according to a first embodiment of the present invention. 2 is a view taken in the direction of arrow II in FIG. 1. FIG.
  • the direction indicated by X is the "front of the lamp”
  • the direction indicated by Y is the “left direction” ("right direction” when viewed from the front of the lamp) orthogonal to the "front of the lamp”
  • the direction indicated by Z. is the "upward direction”. The same applies to figures other than these.
  • the vehicle lamp 10 is a headlamp provided at the front end of a vehicle, and has a configuration in which a lamp unit 20 is accommodated in a lamp chamber formed by a lamp body 12 and a translucent cover 14 .
  • FIG. 3 is a cross-sectional view taken along line III-III in FIG.
  • the lamp unit 20 is a so-called projector-type lamp unit, and includes a plurality of first light emitting elements 30 and second light emitting elements 40 as light sources, and a first reflector 32 and a second reflector 42. , and a projection lens 50 . Further, the lamp unit 20 is configured to selectively form a low beam light distribution pattern and a high beam light distribution pattern with the light emitted from the lamp unit 20 .
  • the plurality of first light emitting elements 30 are configured to light during low beam irradiation and high beam irradiation
  • the plurality of second light emitting elements 40 are configured to additionally light during high beam irradiation.
  • the lamp unit 20 directs the direct light from the plurality of first light emitting elements 30 and the light emitted from the plurality of first light emitting elements 30 and reflected by the first reflector 32 through the projection lens 50 toward the front of the lamp.
  • a low-beam light distribution pattern is formed by irradiating with a light beam.
  • direct light from the plurality of second light emitting elements 40 and light emitted from the plurality of second light emitting elements 40 and reflected by the second reflector 42 are projected through the projection lens 50 toward the front of the lamp.
  • An additional light distribution pattern for high beam is formed.
  • the optical path of light emitted from the first light emitting element 30 is indicated by solid lines, and the optical path of light emitted from the second light emitting element 40 is indicated by broken lines.
  • the projection lens 50 is composed of a plano-convex aspherical lens with a convex curved front surface, and has an optical axis Ax extending in the longitudinal direction of the lamp.
  • the projection lens 50 projects a light source image formed on a rear focal plane including the rear focal point F of the projection lens 50 as an inverted image onto a virtual vertical screen in front of the lamp, that is, in front of the vehicle.
  • the projection lens 50 is supported by a lens holder 52 at its outer peripheral portion.
  • the lens holder 52 is supported by a heat sink 54 .
  • the plurality of first light emitting elements 30 are arranged side by side in the left-right direction above the optical axis Ax, and the plurality of second light emitting elements 40 are arranged above the optical axis Ax. They are arranged side by side in the left-right direction on the lower side.
  • Each of the plurality of first light emitting elements 30 is composed of 11 white light emitting diodes each having a rectangular, more specifically, a square light emitting surface 30a, which are arranged at small intervals from each other. More specifically, the first light emitting element 30 arranged directly above the optical axis Ax and the five first light emitting elements 30 arranged on the right side of the first light emitting element 30 (on the left side when viewed from the front of the lamp) are , are displaced downward with respect to the remaining five first light emitting elements 30 arranged on the left side of the first light emitting element 30 (on the right side in front view of the lamp).
  • each of the plurality of second light emitting elements 40 is composed of 13 white light emitting diodes each having a rectangular shape, specifically, a square light emitting surface 40a having the same size as the light emitting surface 30a. are arranged in a horizontal row.
  • the plurality of first light-emitting elements 30 are configured to light up all at once, but the plurality of second light-emitting elements 40 are configured to light up all at once as well as individually. That is, each of the plurality of second light-emitting elements 40 is controlled to be turned on and off according to the driving conditions of the own vehicle by an electronic control unit (not shown).
  • the driving condition of the own vehicle can be grasped, for example, based on detection values such as steering angle data of the own vehicle, navigation data, image data of the road ahead.
  • a plurality of first light emitting elements 30 and second light emitting elements 40 are mounted on a common substrate 56 , and the substrate 56 is supported by a heat sink 54 .
  • the substrate 56 is arranged in a state tilted backward with respect to a vertical plane perpendicular to the optical axis Ax.
  • the backward tilt angle of the substrate 56 with respect to the vertical plane is set to a value of 10 to 20°, for example, about 15°.
  • the plurality of first light-emitting elements 30 and second light-emitting elements 40 have their light-emitting surfaces 30a and 40a directed upward by 10 to 20°, for example, about 15° with respect to the front direction of the lamp, that is, the projection lens. It is positioned facing 50.
  • the first reflector 32 and the second reflector 42 are arranged on the front side of the lamp with respect to the board 56 .
  • the first reflector 32 and the second reflector 42 are integrally formed and supported by heat sinks 54 at both left and right ends thereof.
  • the first reflector 32 has a reflecting surface 32a formed so as to surround the plurality of first light emitting elements 30.
  • the light emitted from the plurality of first light emitting elements 30 is directed toward the projection lens 50 on the reflecting surface 32a. It is configured to reflect
  • the reflecting surface 32a has a horizontally elongated concave surface shape, and the upper edge of the reflecting surface 32a has a substantially horizontally elongated elliptical outer shape when viewed from the front of the lamp.
  • the second reflector 42 has a reflecting surface 42a formed so as to surround the plurality of second light emitting elements 40, and the light emitted from the plurality of second light emitting elements 40 is projected onto the projection lens 50 at the reflecting surface 42a. configured to reflect toward A pair of small reflecting surfaces 42s are arranged on both upper and lower sides of each of the plurality of second light emitting elements 40 in the reflecting surface 42a. The pair of upper and lower small reflecting surfaces 42s reflect the emitted light from each of the second light emitting elements 40 toward the projection lens 50 as substantially parallel light.
  • the reflecting surface 32a of the first reflector 32 is formed with an opening 32b surrounding the plurality of first light emitting elements 30 in the vicinity of the outer periphery of the reflecting surface 32a.
  • the openings 32b are formed so as to extend along the arrangement of the plurality of first light emitting elements 30 in a substantially laterally elongated rectangular shape with left and right steps.
  • the reflecting surface 42a of the second reflector 42 is formed with a horizontally long opening 42b surrounding the plurality of second light emitting elements 40 near the outer periphery of the reflecting surface 42a.
  • the opening 42b is formed to extend in a horizontally long rectangular shape along the arrangement of the plurality of second light emitting elements 40 .
  • Direct light from the plurality of first light emitting elements 30 and light emitted from the plurality of first light emitting elements 30 reflected by the first reflector 32 are separated between the plurality of first light emitting elements 30 and the plurality of second light emitting elements 40 .
  • a shade 60 is provided for blocking part of the incident light and forming a cut-off line for the low-beam light distribution pattern.
  • the shade 60 is integrally formed with the first reflector 32 and the second reflector 42. That is, the shade 60 is formed by extending the connecting portion of the first reflector 32 and the second reflector 42 toward the front of the lamp with a wedge-shaped vertical cross section.
  • the upper surface of the shade 60 forms part of the reflecting surface 32 a of the first reflector 32
  • the lower surface of the shade 60 forms part of the reflecting surface 42 a of the second reflector 42 .
  • the front edge 60a of the shade 60 is formed so as to extend in the left-right direction at the position of the rear focal point F of the projection lens 50 along a vertical plane perpendicular to the optical axis Ax. Specifically, the front edge 60a extends horizontally at a position slightly above the optical axis Ax at the left side of the optical axis Ax (the right side when viewed from the front of the lamp). The right side portion (the left side portion when viewed from the front of the lamp) extends horizontally at a position slightly below the optical axis Ax. Further, the left end portion of the front edge 60a is connected to the portion on the left side of the optical axis Ax while extending obliquely in the upper left direction.
  • a second shade 70 is arranged to block part of the direct light directed toward the area.
  • the second shade 70 is formed of a plate-like member, and is supported by the first reflector 32 at the upper end portion of the second shade 70 while being arranged substantially parallel to the substrate 56 .
  • the second shade 70 is located at a position that partially overlaps the five first light emitting elements 30 positioned in the center in the left-right direction among the eleven first light emitting elements 30 when viewed from the front of the lamp. placed in relation to each other.
  • the first light emitting element 30 located directly above the optical axis Ax and the first light emitting element 30 adjacent to the right side of the first light emitting element 30 are hidden by the second shade 70 at their upper ends.
  • the upper left end of the first light emitting element 30 adjacent to the right thereof is hidden by the second shade 70 .
  • the upper half of the first light emitting element 30 adjacent to the left side of the first light emitting element 30 located directly above the optical axis Ax is hidden by the second shade 70 .
  • the upper right quarter of the first light emitting element 30 adjacent to the left thereof is hidden by the second shade 70 .
  • the lower end surface of the second shade 70 is formed to extend obliquely upward toward the front of the lamp at an angle at which direct light from the plurality of first light emitting elements 30 does not enter.
  • the first reflector 32 is formed with a notch portion 32c for disposing the second shade 70 and a support portion 32d for supporting the upper end portion of the second shade 70. is formed.
  • FIG. 4A is a perspective view of a low-beam light distribution pattern PL formed on a virtual vertical screen arranged at a position 25 m in front of the vehicle by light emitted from the lighting unit 20 of the vehicle lighting 10 toward the front of the lighting.
  • FIG. 4 is a diagram showing;
  • the low-beam light distribution pattern PL is a left-handed low-beam light distribution pattern, and has cutoff lines CL1 and CL2 that are uneven on the left and right at the upper edge thereof.
  • the cut-off lines CL1 and CL2 extend in the horizontal direction with different levels on the left and right of the line VV passing vertically through the vanishing point HV in the front direction of the lamp.
  • the lane side portion is formed as a lower cutoff line CL1
  • the own lane side portion on the left side of the VV line is formed as an upper cutoff line CL2 rising from the lower cutoff line CL1 via an inclined portion. ing.
  • the elbow point E which is the intersection of the lower cutoff line CL1 and the line VV, is located approximately 0.5 to 0.6° below HV.
  • the low-beam light distribution pattern PL is formed by direct light from the multiple first light emitting elements 30 and reflected light from the first reflector 32 .
  • the left and right stepped cut-off lines CL1 and CL2 are formed as an inverted projected image of the front edge 60a of the shade 60. As shown in FIG.
  • FIG. 4B is a diagram showing a comparative example of the present embodiment, and is a diagram showing a low-beam light distribution pattern PL' that would be formed if the lamp unit 20 did not have the second shade 70. As shown in FIG. .
  • the low-beam light distribution pattern PL' is also formed as a light distribution pattern similar to the low-beam light distribution pattern PL, but the illuminance distribution is partially different from that of the low-beam light distribution pattern PL.
  • the low-beam light distribution pattern PL' is formed as an excessively bright portion Pa' in which the lower region is brighter than necessary. Therefore, when the low-beam light distribution pattern PL' is formed on the road surface in front of the lamp, the short-distance region where the excessively bright portion Pa' is located becomes too bright, and the long-distance region, that is, the excessively bright portion Pa' and the cutoff line CL1, The area between CL2 becomes difficult to see, and therefore, sufficient forward visibility cannot be ensured during low beam irradiation.
  • the excessive bright portion Pa' is not formed in its lower region. This is because, in the lamp unit 20 according to the present embodiment, part of the direct light from the plurality of light emitting elements 30 directed to the upper region of the projection lens 50 is blocked by the second shade 70, and as a result, the lower portion of the low beam light distribution pattern is blocked. This is because the irradiation light for forming the regions is reduced.
  • the second shade 70 is arranged at a position that blocks part of the direct light from the five first light emitting elements 30 positioned in the center in the left-right direction among the eleven first light emitting elements 30.
  • the brightness of the front portion in the short distance area of the road surface in front of the lamp is mainly suppressed, and a certain amount of brightness is ensured in the left and right side portions of the short distance area.
  • FIG. 5A is a diagram showing an illuminance distribution IDv along line VV of the low-beam light distribution pattern PL shown in FIG. 4A formed on the virtual vertical screen
  • FIG. 5B is a comparative example of FIG. 5A.
  • FIG. 10 shows.
  • the illuminance Ev sharply rises from near 0° corresponding to the HH line to its lower side. This corresponds to the fact that the illuminance Ev of the low-beam light distribution pattern PL is highest in the regions below the cutoff lines CL1 and CL2.
  • the illuminance distribution IDv reaches the maximum illuminance around 1°D, then sharply drops as the downward angle increases, and then smoothly drops to approximately zero around 10°D.
  • the illuminance Ev also rises sharply from near 0° to below it, reaching the maximum illuminance near 1°D, and then downward. As the angle increases, it drops sharply and drops to almost zero at around 10°D, but a bulge occurs around 4 to 6°D in the middle of the drop (see dashed line area A in FIG. 5B).
  • the illuminance distribution IDv' of the low-beam light distribution pattern PL' is indicated by a chain double-dashed line.
  • the low-beam light distribution pattern PL has a smooth illuminance distribution in which the illuminance Ev around 4 to 6°D is low with respect to the low-beam light distribution pattern PL'.
  • the low-beam light distribution pattern PL having such an illuminance distribution IDv on the road surface in front of the lamp, it is possible to prevent the short distance area from becoming too bright and the long distance area becoming difficult to see. This ensures sufficient forward visibility during low-beam illumination.
  • FIG. 6A is a view perspectively showing a high-beam light distribution pattern PH formed on the virtual vertical screen by light emitted from the lamp unit 20 of the vehicle lamp 10 toward the front of the lamp.
  • the high beam light distribution pattern PH is formed as a synthetic light distribution pattern in which the additional light distribution pattern PA is added to the low beam light distribution pattern PL.
  • the additional light distribution pattern PA includes the direct light from the 13 second light emitting elements 40 and the light emitted from the 13 second light emitting elements 40 and reflected by the second reflector 42 , specifically the light from the second reflector 42 . It is a light distribution pattern formed by the light reflected by 13 pairs of small reflecting surfaces 42s that constitute the reflecting surface 42a.
  • the additional light distribution pattern PA is formed as a composite light distribution pattern of 13 small light distribution patterns PAa formed by lighting each of the 13 second light emitting elements 40 .
  • Each of the 13 small light distribution patterns PAa is formed as a substantially rectangular light distribution pattern, and the small light distribution patterns PAa adjacent to each other are formed in a horizontal row while slightly overlapping each other.
  • the direct light from each second light emitting element 40 and part of the reflected light from each pair of small reflecting surfaces 42 s of the reflector 42 are blocked by the shade 60 .
  • each small light distribution pattern PAa is formed as a slightly vertically elongated substantially rectangular light distribution pattern, and the lower edge thereof is formed so as to extend along the cutoff lines CL1 and CL2.
  • FIG. 6B is a view perspectively showing an intermediate light distribution pattern PM in which a part of the high beam light distribution pattern PH shown in FIG. 6A is omitted.
  • the sixth small light distribution pattern PAa from the right of the 13 small light distribution patterns PAa forming the additional light distribution pattern PA is missing due to the turning off of the second light emitting element 40 that is sixth from the left. shows an intermediate light distribution pattern PM in the state.
  • the irradiation light from the lamp unit 20 is prevented from striking the oncoming vehicle 2, and as much as possible within a range that does not give glare to the driver of the oncoming vehicle 2. It is configured so that it can illuminate a wide area ahead.
  • the second light emitting elements 40 to be turned off are sequentially switched to change the shape of the intermediate light distribution pattern PM, thereby changing the shape of the intermediate light distribution pattern PM. It is possible to maintain the state of illuminating the road ahead as wide as possible within the range that does not give glare.
  • the existence of the oncoming vehicle 2 is detected by an on-board camera (not shown) or the like. Even when a vehicle ahead exists on the road ahead or a pedestrian exists on the shoulder of the road ahead, this is detected and part of the small light distribution pattern PAa is omitted. Therefore, it is configured so as not to give glare.
  • the lamp unit 20 of the vehicle lamp 10 irradiates the light emitted from the plurality of first light emitting elements (light emitting elements) 30 through the projection lens 50 toward the front of the lamp to achieve a low beam distribution. It is configured to form a pattern PL. Also, the plurality of first light emitting elements 30 are arranged side by side in the left-right direction with the light emitting surfaces 30 a facing the projection lens 50 . In addition, between the plurality of first light emitting elements 30 and the projection lens 50, part of the emitted light from the plurality of first light emitting elements 30 is arranged to form the cutoff lines CL1 and CL2 of the low beam light distribution pattern PL. A shade 60 for blocking light is arranged.
  • a second shade 70 is arranged between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 . ing. Therefore, the following effects can be obtained.
  • the reason why the lower area of the low-beam light distribution pattern PL becomes brighter than necessary is due to the direct light from the plurality of first light emitting elements 30 entering the upper area of the projection lens 50 . Therefore, by shielding part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 with the second shade 70, the lower region of the low beam light distribution pattern PL is prevented from becoming too bright. It can be prevented before it happens.
  • the low-beam light distribution pattern PL is formed on the road surface in front of the lamp, it is possible to prevent the short-distance area from becoming too bright and the long-distance area from becoming difficult to see. It is possible to sufficiently ensure forward visibility during irradiation.
  • the vehicle lamp 10 configured to irradiate the light emitted from the plurality of first light emitting elements 30 through the projection lens 50 toward the front of the lamp, Sufficient forward visibility can be ensured.
  • the second shade 70 is the first light emitting element positioned at the center in the left-right direction relative to the first light emitting elements 30 positioned at both ends in the left-right direction among the plurality of first light-emitting elements 30 . It is arranged at a position where the direct light from 30 is blocked by a large amount. Therefore, when the low-beam light distribution pattern PL is formed on the road surface in front of the lamp, the brightness of the front portion in the short distance region can be suppressed intensively.
  • the first reflector (reflector) 32 that reflects the light emitted from the plurality of first light emitting elements 30 toward the projection lens 50 is provided, the brightness of the low beam light distribution pattern PL is In addition, the degree of freedom of the light distribution of the low-beam light distribution pattern PL can be increased.
  • the first reflector 32 is integrally formed with the shade 60, the accuracy of light distribution control can be improved and the number of parts of the vehicle lamp 10 can be reduced. can be done.
  • the lighting unit 20 of the vehicle lamp 10 can selectively form the low beam light distribution pattern PL and the high beam light distribution pattern PH. Further, since the second reflector 42 for reflecting the light emitted from the plurality of second light emitting elements 40 additionally lit during high beam irradiation is formed integrally with the first reflector 32, the number of parts of the vehicle lamp 10 is reduced. can be reduced.
  • the second shade 70 is arranged at a position that blocks part of the direct light emitted from the five first light emitting elements 30 positioned at the center in the left-right direction among the 11 first light emitting elements 30 .
  • the number of the first light emitting elements 30 is shaded and the amount of shade, thereby adjusting the brightness of the short-distance area of the road surface in front of the lamp.
  • the projection lens 50 is described as being composed of a plano-convex aspherical lens, but it is also possible to be composed of a biconvex lens, a convex meniscus lens, or the like. It is also possible to have a configuration having an outer shape of .
  • the lamp unit 20 is described as having eleven first light emitting elements 30 and thirteen second light emitting elements 40, but the number of first and second light emitting elements other than this number may be different. A configuration with 30 and 40 is also possible.
  • the plurality of first light emitting elements 30 are arranged in a staggered manner, but it is also possible to arrange them in a horizontal row.
  • the light emitting surfaces 30a and 40a of the plurality of first and second light emitting elements 30 and 40 have been described as having a square outer shape. It is also possible to adopt a configuration having an external shape such as a rectangular shape or a laterally long rectangular shape.
  • first and second reflectors 32, 42 are arranged to effectively utilize the light emitted from the plurality of first and second light emitting elements 30, 40. and second reflectors 32, 42, or both are not arranged.
  • the lamp unit 20 of the vehicle lamp 10 has been described as being capable of selectively forming the low beam light distribution pattern PL and the high beam light distribution pattern PH, but only the low beam light distribution pattern PL is formed. It is also possible to configure
  • FIG. 7 is a view, similar to FIG. 3, showing a lamp unit 120 of a vehicle lamp according to this modified example.
  • the basic configuration of the lamp unit 120 is similar to that of the lamp unit 20 of the above embodiment, but the configuration of the second shade 170 is different from that of the above embodiment.
  • the configuration of 132 is also partially different from the first reflector 32 shown in FIG.
  • a second light emitting element 30 is provided between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 .
  • a shade 170 is arranged.
  • this modification differs from the above-described embodiment in that the second shade 170 is formed integrally with the first reflector 132 .
  • the second shade 170 is formed in substantially the same arrangement and shape as the second shade 70 of the above embodiment.
  • the first reflector 132 has a reflecting surface 132a and an opening 132b similar to those of the first reflector 32 shown in FIG.
  • the configurations of the shade 60 and the second reflector 42 are the same as those of the lamp unit 20 shown in FIG.
  • FIG. 8 is a view, similar to FIG. 3, showing a lighting unit 220 of a vehicle lamp according to this modified example.
  • the basic configuration of the lamp unit 220 is similar to that of the lamp unit 20 shown in FIG. 3, but the configuration of the second shade 270 is different.
  • a second light emitting element 30 is provided between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 .
  • a shade 270 is arranged.
  • the second shade 270 is formed integrally with the first reflector 232 and has a reflecting surface 270a, which is different from the above embodiment.
  • the reflecting surface 270a of the second shade 270 is formed to extend along the horizontal plane above the optical axis Ax, thereby reflecting the direct light from the plurality of first light emitting elements 30 downward to the projection lens 50. is configured to be incident on the Also, part of the direct light from the plurality of first light emitting elements 30 reflected by the reflecting surface 270 a is configured to enter the projection lens 50 after being reflected by the reflecting surface 232 a of the first reflector 232 .
  • the first reflector 232 has a reflecting surface 232a and an opening 232b similar to those of the first reflector 32 of the lamp unit 20 .
  • the configurations of the shade 60 and the second reflector 42 are the same as those of the lamp unit 20 shown in FIG.
  • FIG. 9A is a view perspectively showing a low-beam light distribution pattern PL-2 formed on the virtual vertical screen by the light emitted from the lamp unit 220 of this modified example toward the front of the lamp.
  • the low-beam light distribution pattern PL-2 is formed as a light distribution pattern in which a distant illumination light distribution pattern Pa-2 is added to the low-beam light distribution pattern PL shown in FIG. 4A.
  • FIG. 9B is a diagram showing a comparative example of this modification, and is a diagram showing a low-beam light distribution pattern PL' that would be formed if the lamp unit 220 did not have the second shade 270.
  • FIG. FIG. 4B is a view similar to FIG. 4B;
  • the light distribution pattern Pa-2 for distant irradiation of the low-beam light distribution pattern PL-2 shown in FIG. 9A is substantially the same as the excessive bright portion Pa' formed in the lower region in the low-beam light distribution pattern PL' shown in FIG. 9B.
  • a shaped light distribution pattern is formed in a displaced upper region near the cutoff lines CL1 and CL2.
  • FIG. 10A is a diagram showing an illuminance distribution IDv-2 along the VV line of the low-beam light distribution pattern PL-2 formed on the virtual vertical screen
  • FIG. 10B is a diagram showing a comparative example of FIG. 10A. is.
  • the illuminance distribution IDv-2 of the low-beam light distribution pattern PL-2 has a bulge of about 4 to 6°D with respect to the illuminance distribution IDv' of the low-beam light distribution pattern PL' shown in FIG. 10B. (see dashed line area A in FIG. 10A).
  • the illuminance distribution IDv-2 of the low-beam light distribution pattern PL-2 has a maximum illuminance near 1°D, and then the illuminance Ev sharply decreases as the downward angle increases. (See dashed line area B in FIG. 10A).
  • the low-beam light distribution pattern PL-2 By forming the low-beam light distribution pattern PL-2 having such an illuminance distribution IDv-2 on the road surface in front of the lamp, as shown in FIG. 9A, the brightness of the entire low-beam light distribution pattern PL-2 is impaired. Distant visibility is further improved without being blocked.
  • the direct light from the plurality of first light emitting elements 30 reflected downward by the reflecting surface 270a of the second shade 270 becomes light that illuminates the long-distance area of the road surface in front of the lamp. Therefore, the arrangement of the second shade 270 does not impair the brightness of the entire low-beam distribution pattern PL-2, and the low-beam distribution pattern PL-2 has excellent long-distance visibility.
  • FIG. 11 is a view, similar to FIG. 3, showing a lighting unit 320 of a vehicle lamp according to this modified example.
  • the basic configuration of a lamp unit 320 is similar to that of the lamp unit 20 shown in FIG. Also, the configuration and arrangement of the first reflector 332 are different from those of the lamp unit 20 .
  • this modification differs from the lamp unit 20 in that the substrate 356 that supports the plurality of first light emitting elements 30 is configured separately from the substrate 358 that supports the plurality of second light emitting elements 40 .
  • the shape of the heat sink 354 that supports the two substrates 356 and 358 is also partly different from that of the lamp unit 20 .
  • the plurality of first light-emitting elements 30 are arranged above the optical axis Ax with their light-emitting surfaces 30a facing obliquely downward with respect to the front direction of the lamp.
  • the substrate 358 is arranged in a state tilted backward with respect to the vertical plane orthogonal to the optical axis Ax, like the substrate 56 of the above embodiment. Further, the substrate 356 is arranged in a forward tilted state with respect to a vertical plane orthogonal to the optical axis Ax.
  • the first reflector 332 is arranged with its reflecting surface 332 a facing obliquely downward in front of the lamp, thereby reflecting the light emitted from the plurality of first light emitting elements 30 toward the projection lens 50 . is configured to
  • a second shade is provided between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50.
  • 370 are arranged.
  • the second shade 370 is composed of a plate-like member, and is arranged substantially parallel to the substrate 356, and has a first reflector 332 at its upper end. supported by
  • the first reflector 332 has an opening 332b similar to that of the first reflector 32 of the lamp unit 20 .
  • the configurations of the shade 60 and the second reflector 42 are the same as those of the lamp unit 20 .
  • the direct light emitted from the plurality of first light emitting elements 30 in the direction perpendicular to the light emitting surface 30a becomes light directed toward the substantially central region in the vertical direction of the projection lens 50. . Therefore, the proportion of direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 is smaller than in the lamp unit 20 shown in FIG.
  • the low-beam light distribution pattern PL' (see FIG. 4B) of the comparative example of the lamp unit 20 is bright.
  • the bright portion Pa' is not formed in the lower region.
  • the phenomenon that the lower area of the low-beam light distribution pattern PL' becomes bright still remains.
  • the lamp unit 320 according to the present modification includes the second shade 370, it is possible to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50. can. In this way, it is possible to prevent the lower area of the low-beam light distribution pattern from becoming bright.
  • FIG. 12 is a side sectional view showing a vehicle lamp according to a second embodiment of the present invention.
  • 13 is a view in the direction of arrow XIII in FIG. 12.
  • a vehicle lamp 410 is a headlamp provided at the front end of a vehicle, and has a configuration in which a lamp unit 420 is accommodated in a lamp chamber formed by a lamp body 412 and a translucent cover 414 .
  • FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG.
  • the lamp unit 420 is a so-called projector-type lamp unit, and includes a plurality of first light emitting elements 430 and second light emitting elements 440 as light sources, and a first reflector 432 and a second reflector 442. and a projection lens 450 .
  • the configurations of the first light emitting element 430, the second light emitting element 440, the first reflector 432, the second reflector 442 and the projection lens 450 are the first light emitting element 30 and the second light emitting element 440 shown in FIG.
  • the configuration is the same as that of the second light emitting element 40 , the first reflector 32 , the second reflector 42 and the projection lens 50 .
  • the projection lens 450 is a plano-convex aspherical lens having a convex front surface 450a, and has an optical axis Ax extending in the longitudinal direction of the lamp.
  • the rear surface 450b of the projection lens 450 is formed with a downward deflection portion 450c in its upper region 450b1. Details of the downward deflector 450c will be described later.
  • the projection lens 450 is supported by a lens holder 452 at its outer peripheral portion.
  • the lens holder 452 is supported by a heat sink 454 .
  • Each of the plurality of first light emitting elements 430 is composed of 11 white light emitting diodes each having a rectangular, more specifically, a square light emitting surface 430a, which are arranged at small intervals from each other.
  • each of the plurality of second light emitting elements 440 is composed of nine white light emitting diodes each having a rectangular shape, specifically, a square light emitting surface 440a having the same size as the light emitting surface 30a. are arranged in a horizontal row.
  • a plurality of first light emitting elements 430 and second light emitting elements 440 are mounted on a common substrate 456 , and the substrate 456 is supported by a heat sink 454 .
  • the substrate 456 has the same configuration as the substrate 56 shown in FIG.
  • the first reflector 432 has a reflective surface 432a formed so as to surround the plurality of first light emitting elements 430 .
  • the second reflector 442 has a reflecting surface 442 a formed to surround the plurality of second light emitting elements 440 .
  • the reflective surfaces 432a and 442a have the same configurations as the reflective surfaces 32a and 42a shown in FIG. 3, respectively.
  • Direct light from the plurality of first light emitting elements 430 and light emitted from the plurality of first light emitting elements 430 reflected by the first reflector 432 are present between the plurality of first light emitting elements 430 and the plurality of second light emitting elements 440 .
  • a shade 460 is provided for blocking part of the incident light and forming a cut-off line for the low-beam light distribution pattern.
  • a front edge 460a of the shade 460 is formed so as to extend in the left-right direction along a vertical plane perpendicular to the optical axis Ax at the position of the rear focal point F of the projection lens 450 in a staggered manner.
  • the shade 460 has the same configuration as the shade 60 shown in FIG.
  • the projection lens 450 is configured to deflect part of the emitted light from the plurality of first light emitting elements 430 downward at a downward deflection portion 450c formed on the rear surface 450b. .
  • the downward deflector 450c is formed on the rear surface 450b of the projection lens 450 at a position away from the optical axis Ax.
  • the rear surface 450b of the projection lens 450 is formed such that its upper region 450b1 is offset toward the lamp front side with respect to the other general region.
  • the downward deflecting portion 450c is formed by an inclined surface extending in the left-right direction while being inclined forward at the lower end portion of the upper region 450b1.
  • the downward deflection angle for the light emitted from the plurality of first light emitting elements 430 is set by the forward inclination angle of the downward deflection portion 450c.
  • the light reaching the downward deflecting portion 450c is refracted downward and enters the projection lens 450, whereupon the light reaches the projection lens 450. It exits the front face 450a of 450 as a fairly downward light.
  • the optical path indicated by the two-dot chain line in FIG. It is the optical path of incident light.
  • the downward deflector 450c is not formed on the rear surface 450b of the projection lens 450, light incident on the projection lens 450 from the plurality of first light emitting elements 430 is directed downward from the front surface 450a of the projection lens 450.
  • the downward angle of the light is not so large.
  • the direct light from the plurality of second light emitting elements 440 incident on the projection lens 450 would be The light is emitted from the front surface 450a of the projection lens 450 as slightly upward light.
  • FIG. 15A is a perspective view of a low beam light distribution pattern PL formed on a virtual vertical screen arranged at a position 25 m in front of the vehicle by light emitted forward from the lamp unit 420 of the vehicle lamp 410.
  • FIG. FIG. 4 is a diagram showing;
  • the low-beam light distribution pattern 2PL is a left-handed low-beam light distribution pattern, and has cut-off lines CL1 and CL2 that are uneven on the left and right at the upper edge of the low-beam light distribution pattern 2PL.
  • the cut-off lines CL1 and CL2 extend in the horizontal direction with different levels on the left and right of the line VV passing vertically through the vanishing point HV in the front direction of the lamp.
  • the lane side portion is formed as the lower cutoff line CL1.
  • the portion on the left side of the VV line on the own lane side is formed as an upper cutoff line CL2 rising from the lower cutoff line CL1 via an inclined portion.
  • the elbow point E which is the intersection of the lower cutoff line CL1 and the line VV, is located approximately 0.5 to 0.6° below HV.
  • the low-beam light distribution pattern 2PL is formed as a light distribution pattern whose lower region has substantially uniform brightness and which has a wide vertical width.
  • FIG. 15B is a diagram showing a comparative example of the present embodiment, and is a diagram showing a low-beam light distribution pattern 2PL' that would be formed if the projection lens 450 did not have the downward deflector 450c. is.
  • the low-beam light distribution pattern 2PL' is also formed as a light distribution pattern substantially similar to the low-beam light distribution pattern 2PL, but is formed as a light distribution pattern with a narrower vertical width than the low-beam light distribution pattern 2PL. . Further, the lower region of the low-beam light distribution pattern 2PL' is formed as an excessively bright portion 2Pa' that is brighter than necessary.
  • the short-distance region where the excessively bright portion 2Pa' is located becomes too bright, and the distance between the excessively bright portion 2Pa' and the cutoff lines CL1 and CL2 becomes too bright. It becomes difficult to see the long-distance area of As a result, sufficient forward visibility cannot be ensured during low-beam irradiation.
  • the low-beam light distribution pattern 2PL does not have such an excessively bright portion 2Pa' in its lower region. This is because, in the lamp unit 420 according to the present embodiment, part of the direct light directed toward the upper region of the projection lens 450 from the plurality of first light emitting elements 430 is deflected downward by the downward deflector 450c, and then travels forward of the lamp. This is because the irradiation light for forming the lower region of the low-beam light distribution pattern 2PL is reduced.
  • the low-beam light distribution pattern 2PL is formed as a light distribution pattern in which the lower edge of the low-beam light distribution pattern 2PL' is extended downward. This is also because part of the direct light directed toward the upper region of the projection lens 450 from the plurality of first light emitting elements 430 is deflected downward by the downward deflector 450c and radiated forward of the lamp.
  • FIG. 16 is a diagram showing a high beam light distribution pattern 2PH formed on the virtual vertical screen by light emitted from the lamp unit 420 toward the front of the lamp.
  • the high beam light distribution pattern 2PH is formed as a light distribution pattern in which an additional light distribution pattern 2PA is added to the low beam light distribution pattern 2PL.
  • the additional light distribution pattern 2PA is formed by the direct light from the plurality of second light emitting elements 440 and the light emitted from the plurality of second light emitting elements 440 and reflected by the second reflector 442 to form the low beam light distribution pattern 2PL.
  • the lower edge vicinity area 2PAa of the additional light distribution pattern 2PA is formed so as to overlap with the cutoff vicinity area of the low-beam light distribution pattern 2PL.
  • the high beam distribution pattern 2PH is formed in a state where the low beam distribution pattern 2PL and the additional distribution pattern 2PA partially overlap, so that no gap is formed between them.
  • the lamp unit 420 of the vehicle lamp 410 emits light emitted from the plurality of first light emitting elements (light emitting elements) 430 through the projection lens 450 toward the front of the lamp, thereby forming a low-beam light distribution pattern.
  • the plurality of first light emitting elements 430 are arranged side by side in the left-right direction with the light emitting surface 430 a facing the projection lens 450 .
  • part of the emitted light from the plurality of first light emitting elements 430 is arranged to form the cutoff lines CL1 and CL2 of the low beam light distribution pattern 2PL.
  • a shade 460 for blocking light is arranged.
  • the downward deflection part 450c for downwardly deflecting the light emitted from the plurality of first light emitting elements 430 is formed in the upper region of the projection lens 450, the following effects can be obtained.
  • the reason why the lower area of the low-beam light distribution pattern 2PL becomes brighter than necessary is due to the direct light from the plurality of first light emitting elements 430 incident on the upper area of the projection lens 450 . Therefore, direct light from the plurality of first light emitting elements 430 directed to the upper region of the projection lens 450 is partially deflected downward by the downward deflector 450c and is irradiated forward of the lamp, thereby achieving the low-beam light distribution pattern 2PL. It is possible to prevent the lower area from becoming too bright. Moreover, the light emitted from the downward deflector 450c can form the low-beam light distribution pattern 2PL as a light distribution pattern having a wide vertical width with its lower edge extended downward.
  • the low-beam light distribution pattern 2PL is formed on the road surface in front of the lamp, it is possible to prevent the short distance area from becoming too bright and the long distance area from becoming difficult to see. It is possible to irradiate an area in front of the lamp, which is positioned closer to the lamp than in the short range area. Thus, it is possible to sufficiently ensure forward visibility during low beam irradiation.
  • the vehicle lamp 410 configured to irradiate the light emitted from the plurality of first light emitting elements 430 through the projection lens 450 toward the front of the lamp, Sufficient forward visibility can be ensured.
  • the downward deflecting portion 450c is formed on the rear surface 450b of the projection lens 450, it is possible to precisely control the downward deflection of the light emitted from the plurality of first light emitting elements 430. can.
  • part of the direct light beams directed obliquely upward from the plurality of second light emitting elements 440 is incident on the downward deflecting portion 450c of the projection lens 450, thereby causing the area near the lower edge of the additional light distribution pattern 2PA.
  • 2PAa is formed so as to overlap with the cutoff vicinity area of the low-beam light distribution pattern 2PL. Therefore, the high beam light distribution pattern 2PH can be formed as a continuous light distribution pattern in which the low beam light distribution pattern 2PL and the additional light distribution pattern 2PA are connected without gaps.
  • the projection lens 450 is described as being composed of a plano-convex aspherical lens, but it is also possible to be composed of a biconvex lens, a convex meniscus lens, or the like. It is also possible to have a configuration having an outer shape of .
  • the lamp unit 420 is described as having eleven first light emitting elements 430 and nine second light emitting elements 440.
  • a configuration including two light emitting elements 440 is also possible.
  • the plurality of first light emitting elements 430 are arranged in a staggered manner, but it is also possible to arrange them in a horizontal row.
  • the light-emitting surfaces 430a and 440a of the plurality of first light-emitting elements 430 and the second light-emitting elements 440 are described as having a square outer shape. It is also possible to adopt a configuration having an outer shape such as a vertically elongated rectangular shape or a horizontally elongated rectangular shape.
  • the first reflector 432 and the second reflector 442 are arranged in order to effectively utilize the light emitted from the plurality of first light emitting elements 430 and second light emitting elements 440 .
  • a configuration in which either or both of the first reflector 432 and the second reflector 442 are not arranged is also possible.
  • the plurality of second light emitting elements 440 are lit all at once, but it is also possible to adopt a configuration in which the plurality of second light emitting elements 440 are individually lit.
  • each of the plurality of second light emitting elements 440 is turned on and off according to the driving conditions of the own vehicle, the driving road ahead can be illuminated as widely as possible without giving glare to the driver of the oncoming vehicle. It becomes possible to
  • FIG. 17 is a view similar to FIG. 13, showing a lighting unit 520 of a vehicle lighting device according to this modified example.
  • the basic configuration of the lamp unit 520 is similar to that of the lamp unit 420 shown in FIG. 17.
  • the projection lens 550 is composed of a plano-convex aspherical lens having a convex front surface 550a, and a downward deflector 550c is provided in the upper region 550b1 of the rear surface 550b of the projection lens 550. formed. It differs from the lamp unit 420 in that the downward deflector 550c is composed of a plurality of diffuser lens elements 550s.
  • the plurality of diffusing lens elements 550s are formed in a vertical striped pattern, and are configured to diffuse the light emitted from the plurality of first light emitting elements 430 in the horizontal direction.
  • FIG. 18A is a view perspectively showing a low-beam light distribution pattern 2PL-1 formed on the virtual vertical screen by light emitted from the lamp unit 520 toward the front of the lamp.
  • the low-beam light distribution pattern 2PL-1 spreads to both the left and right sides of the lower region of the low-beam light distribution pattern 2PL-1 compared to the low-beam light distribution pattern 2PL indicated by the chain double-dashed line in FIG. 18A. is formed as a large light distribution pattern. This is because the downward deflector 550c is composed of a plurality of diffuser lens elements 550s.
  • FIG. 18B is a perspective view showing a high beam light distribution pattern 2PH-1 formed on the virtual vertical screen by light emitted from the lamp unit 520 toward the front of the lamp.
  • the high beam light distribution pattern 2PH-1 is formed as a light distribution pattern in which the additional light distribution pattern 2PA-1 is added to the low beam light distribution pattern 2PL-1.
  • the additional light distribution pattern 2PA-1 is similar to the additional light distribution pattern 2PA indicated by the chain double-dashed line in FIG. It is formed as a light distribution pattern that overlaps with the off-line vicinity area.
  • the additional light distribution pattern 2PA-1 is formed as a light distribution pattern that expands to both the left and right sides of the lower edge vicinity region 2PA-1a more than the additional light distribution pattern 2PA. This is also due to the fact that the downward deflector 550c is composed of a plurality of diffusing lens elements 550s.
  • the low-beam light distribution pattern 2PL-1 as a light distribution pattern that widely and uniformly illuminates the area in front of the lamp on the road surface in front of the lamp.
  • the lower region of the additional light distribution pattern 2PA-1 overlaps the region near the cutoff line of the low-beam light distribution pattern 2PL-1 over a wider range. Therefore, the high beam light distribution pattern 2PH-1 can be formed as a continuous light distribution pattern in which the low beam light distribution pattern 2PL-1 and the additional light distribution pattern 2PA-1 are connected over a wider range without gaps.
  • FIG. 19 is a view, similar to FIG. 14, showing a lighting unit 620 of a vehicle lamp according to this modified example.
  • the basic configuration of the lamp unit 620 is similar to that of the lamp unit 420 shown in FIG.
  • the projection lens 650 is composed of a plano-convex aspherical lens having a convex front surface 650a, and a downward deflector 650c is provided in the upper region 650b1 of the rear surface 650b of the projection lens 650. formed.
  • the lamp unit 620 differs from the lamp unit 420 in that an upward deflection portion 650d that deflects the direct light from the plurality of first light emitting elements 430 upward is formed in a region adjacent to the lower side of the downward deflection portion 650c. .
  • the upward deflection portion 650d is formed of an inclined surface extending in the left-right direction while being inclined backward from the lower edge of the downward deflection portion 650c. It is connected.
  • the upward deflection angle for the light emitted from the plurality of first light emitting elements 430 is set by the backward inclination angle of the upward deflection portion 650d.
  • the optical path of the light reaching the downward deflecting portion 650c is the same as that of the lamp unit 420. .
  • the optical path of the light reaching the upward deflection section 650d is assumed to be It is emitted from the front surface 650a of the projection lens 650 as upward light from the optical path (the optical path indicated by the two-dot chain line in FIG. 19) if it is not formed.
  • FIG. 20A is a view perspectively showing a low beam light distribution pattern 2PL-2 formed on the virtual vertical screen by light emitted from the lamp unit 620 toward the front of the lamp.
  • the low-beam light distribution pattern 2PL-2 is formed as a light distribution pattern having a horizontally long bright portion 2Pb in its upper region.
  • the horizontally long bright portion 2Pb is formed by the light emitted from the plurality of first light emitting elements 430 and incident on the projection lens 650 through the upward deflection portion 650d, and then emitted from the front surface 650a of the projection lens 650 as upward light.
  • the low-beam light distribution pattern 2PL-2 having such a horizontally long bright portion 2Pb is a light distribution pattern with superior long-distance visibility compared to the low-beam light distribution pattern 2PL shown in FIG. 15A.
  • FIG. 20B is a view perspectively showing a high beam light distribution pattern 2PH-2 formed on the virtual vertical screen by light emitted from the lamp unit 620 toward the front of the lamp.
  • the high beam light distribution pattern 2PH-2 is formed as a light distribution pattern in which the additional light distribution pattern 2PA-2 is added to the low beam light distribution pattern 2PL-2.
  • the additional light distribution pattern 2PA-2 similarly to the additional light distribution pattern 2PA indicated by the two-dot chain line in FIG. It is formed as a light distribution pattern that overlaps with the cutoff vicinity area.
  • the additional light distribution pattern 2PA-2 is formed as a light distribution pattern whose upper region is expanded upward compared to the additional light distribution pattern 2PA. This is because the light emitted from the plurality of second light emitting elements 440 and incident on the projection lens 650 through the upward deflector 650d is emitted from the front surface 650a of the projection lens 650 as upward light.
  • the low-beam light distribution pattern 2PL-2 can enhance the effect of suppressing the brightness of the lower area.
  • the low-beam light distribution pattern 2PL-2 can be made excellent in long-distance visibility.
  • the low-beam light distribution pattern 2PL-2 can be formed as a light distribution pattern with excellent long-distance visibility.
  • FIG. 21 is a view, similar to FIG. 13, showing a lighting unit 720 of a vehicle lamp according to this modified example.
  • FIG. 22 is a view, similar to FIG. 14, showing a lamp unit 720 of a vehicle lamp according to this modified example.
  • the basic configuration of the lamp unit 720 is similar to that of the lamp unit 420 shown in FIG.
  • the projection lens 750 is composed of a plano-convex aspherical lens having a convex front surface 750a, and a downward deflector 750c is provided in the upper region 750b1 of the rear surface 750b of the projection lens 750. formed.
  • the projection lens 750 differs from the projection lens 450 of the lamp unit 420 in that it has a horizontally long outer shape when viewed from the front of the lamp. Also, along with this, the configurations of the lens holder 752 and the heat sink 754 are partially different from those of the lamp unit 420 .
  • the projection lens 750 has an outer shape obtained by cutting off the upper and lower portions of the projection lens 450 shown in FIG. 12 in the horizontal direction.
  • the lens holder 752 has a shape corresponding to the outer shape of the projection lens 750
  • the heat sink 754 has a shape corresponding to the outer shape of the lens holder 752 .
  • the projection lens 750 of this modified example has a horizontally long outer shape when viewed from the front of the lamp, the maximum downward angle of the emitted light from the projection lens 750 is limited. For this reason, it is difficult to ensure sufficient brightness in the region of the road surface in front of the lamp in front of the lamp. It is particularly effective to
  • the present invention is not limited to the configurations described in the first embodiment and its modifications, and the second embodiment and its modifications, and adopts configurations with various other modifications. It is possible.

Abstract

This vehicular lamp (10) is provided with a configuration in which a plurality of first light-emitting elements (30) are arranged side by side in the right-left direction and light-emitting surfaces (30a) of the respective first light-emitting elements (30) are oriented toward a projector lens (50). A shade (60) for shielding a part of light emitted from the plurality of first light-emitting elements (30) is disposed between the plurality of first light-emitting elements (30) and the projector lens (50) in order to form a cut-off line of a low beam distribution pattern. A second shade (70) for shieling a part of direct light traveling from the plurality of first light-emitting elements (30) toward an upper region of the projector lens (50) is disposed between the plurality of first light-emitting elements (30) and the projector lens (50).

Description

車両用灯具vehicle lamp
　本願発明は、投影レンズを備えた車両用灯具に関するものである。 The present invention relates to a vehicle lamp equipped with a projection lens.
　従来より、車両用灯具の構成として、複数の発光素子からの出射光を投影レンズを介して灯具前方へ向けて照射することによりロービーム配光パターンを形成するように構成されたものが知られている。 Conventionally, as a configuration of a vehicle lamp, there has been known one configured to form a low-beam light distribution pattern by irradiating light emitted from a plurality of light emitting elements toward the front of the lamp through a projection lens. there is
　「特許文献１」には、このような車両用灯具の構成として、複数の発光素子が左右方向に並んだ状態でかつ発光面を投影レンズへ向けた状態で配置されるとともに、複数の発光素子と投影レンズとの間にロービーム配光パターンのカットオフラインを形成するために複数の発光素子からの出射光の一部を遮光するシェードが配置されたものが記載されている。 In "Patent Document 1", as a configuration of such a vehicle lamp, a plurality of light emitting elements are arranged in a state in which a plurality of light emitting elements are arranged in a horizontal direction with a light emitting surface facing a projection lens, and a plurality of light emitting elements and a projection lens to form a cut-off line of a low-beam light distribution pattern.
日本国特開２０１９－２０７７７４号公報Japanese Patent Application Laid-Open No. 2019-207774
　上記「特許文献１」に記載された車両用灯具のように、左右方向に並んだ状態で配置された複数の発光素子がその発光面を投影レンズへ向けた状態で配置された構成である場合には、複数の発光素子から出射して投影レンズに入射した直射光によって形成されるロービーム配光パターンは、その下部領域がかなり明るくなる。 In the case where a plurality of light-emitting elements arranged in a row in the left-right direction are arranged with their light-emitting surfaces facing the projection lens, as in the vehicle lamp described in "Patent Document 1" above. In particular, the low-beam light distribution pattern formed by the direct light emitted from the plurality of light-emitting elements and incident on the projection lens is considerably brighter in its lower region.
　このため、ロービーム配光パターンが灯具前方路面に形成されたとき、近距離領域が明るくなりすぎて遠距離領域が見えにくくなってしまい、これによりロービーム照射時の前方視認性を十分に確保することができなくなってしまう。 Therefore, when the low-beam light distribution pattern is formed on the road surface in front of the lamp, the short-distance area becomes too bright, making it difficult to see the long-distance area. I can't do it.
　本願発明は、このような事情に鑑みてなされたものであって、複数の発光素子からの出射光を投影レンズを介して灯具前方へ向けて照射するように構成された車両用灯具において、ロービーム照射時の前方視認性を十分に確保することができる車両用灯具を提供することを目的とする。 SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides a vehicle lamp configured to irradiate light emitted from a plurality of light emitting elements toward the front of the lamp via a projection lens. An object of the present invention is to provide a vehicular lamp capable of sufficiently ensuring forward visibility during illumination.
　本願発明は、所定の第２シェードが追加配置された構成とすることにより、上記目的達成を図るようにしている。 The invention of the present application is designed to achieve the above object by providing a configuration in which a predetermined second shade is additionally arranged.
　また、本願発明は、投影レンズの構成に工夫を施すことにより、上記目的達成を図るようにしている。 In addition, the present invention attempts to achieve the above object by devising the configuration of the projection lens.
　すなわち、本願発明の一態様に係る車両用灯具は、
　複数の発光素子と投影レンズとを備え、上記複数の発光素子からの出射光を上記投影レンズを介して灯具前方へ向けて照射することによりロービーム配光パターンを形成するように構成された車両用灯具であって、
　上記複数の発光素子は、左右方向に並んだ状態でかつ発光面を上記投影レンズへ向けた状態で配置されており、
　上記複数の発光素子と上記投影レンズとの間に、上記ロービーム配光パターンのカットオフラインを形成するために上記複数の発光素子からの出射光の一部を遮光するシェードが配置されており、
　上記複数の発光素子と上記投影レンズとの間に、上記複数の発光素子から上記投影レンズの上部領域へ向かう直射光の一部を遮光する第２シェードが配置されている。 That is, the vehicle lamp according to one aspect of the present invention includes:
For a vehicle, comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens. is a lamp,
The plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens,
A shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the low beam light distribution pattern,
A second shade is arranged between the plurality of light emitting elements and the projection lens to block part of the direct light from the plurality of light emitting elements toward the upper region of the projection lens.
　また、本願発明の他の一態様に係る車両用灯具は、
　複数の発光素子と投影レンズとを備え、上記複数の発光素子からの出射光を上記投影レンズを介して灯具前方へ向けて照射することによりロービーム配光パターンを形成するように構成された車両用灯具であって、
　上記複数の発光素子は、左右方向に並んだ状態でかつ発光面を上記投影レンズへ向けた状態で配置されており、
　上記複数の発光素子と上記投影レンズとの間に、上記ロービーム配光パターンのカットオフラインを形成するために上記複数の発光素子からの出射光の一部を遮光するシェードが配置されており、
　上記投影レンズの上部領域に、上記複数の発光素子からの直射光を下向きに偏向させる下向き偏向部が形成されている。 Further, a vehicle lamp according to another aspect of the present invention includes:
For a vehicle, comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens. is a lamp,
The plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens,
A shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the low beam light distribution pattern,
A downward deflection section is formed in the upper region of the projection lens to deflect the direct light from the plurality of light emitting elements downward.
　上記「複数の発光素子」は、左右方向に並んだ状態でかつ発光面を上記投影レンズへ向けた状態で配置されていれば、その具体的な配置や配置個数は特に限定されるものではない。 As long as the "plurality of light emitting elements" are arranged in a horizontal direction with the light emitting surface facing the projection lens, the specific arrangement and the number of arrangement are not particularly limited. .
　上記「シェード」は、複数の発光素子からの出射光の一部を遮光することによりロービーム配光パターンのカットオフラインを形成し得るように構成されたものであれば、その具体的な配置や形状等は特に限定されるものではない。 If the above-mentioned "shade" is configured to form a cut-off line of a low-beam light distribution pattern by blocking part of the light emitted from a plurality of light-emitting elements, its specific arrangement and shape etc. are not particularly limited.
　上記「第２シェード」は、複数の発光素子から投影レンズの上部領域へ向かう直射光の一部を遮光するように構成されたものであれば、その具体的な配置や形状等は特に限定されるものではない。 The specific arrangement and shape of the "second shade" are not particularly limited as long as they are configured to block part of the direct light from the plurality of light emitting elements toward the upper region of the projection lens. not something.
　上記「下向き偏向部」は、投影レンズの上部領域において複数の発光素子からの直射光を下向きに偏向させるように構成されたものであれば、その具体的な配置や形状等は特に限定されるものではなく、投影レンズの前面に形成されていてもよいし後面に形成されていてもよい。 The specific arrangement, shape, etc. of the above-mentioned "downward deflection section" are not particularly limited as long as they are configured to deflect the direct light from the plurality of light emitting elements downward in the upper region of the projection lens. It may be formed on the front surface or the rear surface of the projection lens.
　上記「投影レンズの上部領域」とは、投影レンズの光軸よりも上方側に位置する領域を意味するものである。 The above "upper region of the projection lens" means a region located above the optical axis of the projection lens.
　本願発明の一態様に係る車両用灯具は、複数の発光素子からの出射光を投影レンズを介して灯具前方へ向けて照射することによりロービーム配光パターンを形成する構成を備えている。また、複数の発光素子は左右方向に並んだ状態でかつ発光面を投影レンズへ向けた状態で配置されており、また、複数の発光素子と投影レンズとの間には、ロービーム配光パターンのカットオフラインを形成するために複数の発光素子からの出射光の一部を遮光するシェードが配置されている。そして、複数の発光素子と投影レンズとの間には、複数の発光素子から投影レンズの上部領域へ向かう直射光の一部を遮光する第２シェードが配置されている。このため、次のような作用効果を得ることができる。 A vehicular lamp according to one aspect of the present invention has a configuration that forms a low-beam light distribution pattern by irradiating light emitted from a plurality of light-emitting elements toward the front of the lamp via a projection lens. Further, the plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens, and between the plurality of light emitting elements and the projection lens, a low beam light distribution pattern A shade is arranged to block part of the light emitted from the plurality of light emitting elements in order to form a cutoff line. A second shade is arranged between the plurality of light emitting elements and the projection lens to block part of the direct light from the plurality of light emitting elements toward the upper region of the projection lens. Therefore, the following effects can be obtained.
　すなわち、ロービーム配光パターンの下部領域が必要以上に明るくなってしまうのは、投影レンズの上部領域に入射した複数の発光素子からの直射光によるものである。そこで、複数の発光素子から投影レンズの上部領域へ向かう直射光の一部を第２シェードによって遮光することにより、ロービーム配光パターンの下部領域が明るくなりすぎてしまうのを未然に防止することができる。 That is, the reason why the lower area of the low-beam light distribution pattern becomes brighter than necessary is due to the direct light from the plurality of light-emitting elements entering the upper area of the projection lens. Therefore, it is possible to prevent the lower area of the low-beam light distribution pattern from becoming too bright by blocking part of the direct light from the plurality of light emitting elements toward the upper area of the projection lens with the second shade. can.
　したがって、ロービーム配光パターンが灯具前方路面に形成されたとき、近距離領域が明るくなりすぎて遠距離領域が見えにくくなってしまうのを未然に防止することができ、これによりロービーム照射時の前方視認性を十分に確保することができる。 Therefore, when the low beam light distribution pattern is formed on the road surface in front of the lamp, it is possible to prevent the short distance area from becoming too bright and the long distance area becoming difficult to see. Sufficient visibility can be ensured.
　このように本願発明によれば、複数の発光素子からの出射光を投影レンズを介して灯具前方へ向けて照射するように構成された車両用灯具において、ロービーム照射時の前方視認性を十分に確保することができる。 As described above, according to the present invention, in a vehicle lamp configured to irradiate emitted light from a plurality of light-emitting elements toward the front of the lamp via a projection lens, front visibility is sufficiently improved during low-beam illumination. can be secured.
　また、本願発明の他の一態様に係る車両用灯具は、複数の発光素子からの出射光を投影レンズを介して灯具前方へ向けて照射することによりロービーム配光パターンを形成する構成を備えている。また、複数の発光素子は左右方向に並んだ状態でかつ発光面を投影レンズへ向けた状態で配置されており、また、複数の発光素子と投影レンズとの間には、ロービーム配光パターンのカットオフラインを形成するために複数の発光素子からの出射光の一部を遮光するシェードが配置されている。そして、投影レンズの上部領域には、複数の発光素子からの出射光を下向きに偏向させる下向き偏向部が形成されている。このため、次のような作用効果を得ることができる。 Further, a vehicle lamp according to another aspect of the present invention includes a configuration that forms a low-beam light distribution pattern by irradiating light emitted from a plurality of light emitting elements toward the front of the lamp via a projection lens. there is Further, the plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens, and between the plurality of light emitting elements and the projection lens, a low beam light distribution pattern A shade is arranged to block part of the light emitted from the plurality of light emitting elements in order to form a cutoff line. A downward deflecting portion is formed in the upper region of the projection lens for downwardly deflecting light emitted from the plurality of light emitting elements. Therefore, the following effects can be obtained.
　上記のように、複数の発光素子から投影レンズの上部領域へ向かう直射光の一部を下向き偏向部によって下向きに偏向させた状態で灯具前方へ照射することにより、ロービーム配光パターンの下部領域が明るくなりすぎてしまうのを未然に防止することができる。しかも、下向き偏向部からの出射光によって、ロービーム配光パターンをその下端縁が下方側に拡張された上下幅の広い配光パターンとして形成することができる。 As described above, part of the direct light directed toward the upper region of the projection lens from the plurality of light-emitting elements is deflected downward by the downward deflecting unit and radiated forward of the lamp, so that the lower region of the low-beam light distribution pattern is Excessive brightness can be prevented in advance. Moreover, the light emitted from the downward deflecting portion can form the low-beam light distribution pattern as a light distribution pattern with a wide vertical width whose lower edge is extended downward.
　したがって、ロービーム配光パターンが灯具前方路面に形成されたとき、近距離領域が明るくなりすぎて遠距離領域が見えにくくなってしまうのを未然に防止することができ、かつ、灯具前方路面において近距離領域よりもさらに灯具近傍に位置する灯具直前領域まで光照射が行われるようにすることができる。そして、これによりロービーム照射時の前方視認性を十分に確保することができる。 Therefore, when the low-beam light distribution pattern is formed on the road surface in front of the lamp, it is possible to prevent the short distance area from becoming too bright and the long distance area from becoming difficult to see. It is possible to irradiate light up to a region in front of the lamp located closer to the lamp than the distance region. Thus, it is possible to sufficiently ensure forward visibility during low beam irradiation.
　このように本願発明によれば、複数の発光素子からの出射光を投影レンズを介して灯具前方へ向けて照射するように構成された車両用灯具において、ロービーム照射時の前方視認性を十分に確保することができる。 As described above, according to the present invention, in a vehicle lamp configured to irradiate emitted light from a plurality of light-emitting elements toward the front of the lamp via a projection lens, front visibility is sufficiently improved during low-beam illumination. can be secured.
図１は、本願発明の第一実施形態に係る車両用灯具を示す側断面図である。FIG. 1 is a side sectional view showing a vehicle lamp according to a first embodiment of the present invention. 図２は、図１のII方向矢視図である。2 is a view taken in the direction of arrow II in FIG. 1. FIG. 図３は、図２のIII－III線断面図である。FIG. 3 is a cross-sectional view taken along line III--III in FIG. 図４Ａは、図１に示す車両用灯具からの照射光によって形成されるロービーム配光パターンを示す図である。4A is a diagram showing a low-beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG. 1. FIG. 図４Ｂは、図４Ａの比較例を示す図である。FIG. 4B is a diagram showing a comparative example of FIG. 4A. 図５Ａは、図４Ａに示すロービーム配光パターンの照度分布を示す図である。FIG. 5A is a diagram showing the illuminance distribution of the low-beam light distribution pattern shown in FIG. 4A. 図５Ｂは、図５Ａの比較例を示す図である。FIG. 5B is a diagram showing a comparative example of FIG. 5A. 図６Ａは、図１に示す車両用灯具からの照射光によって形成されるハイビーム配光パターンを示す図である。6A is a diagram showing a high beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG. 1. FIG. 図６Ｂは、図６Ａに示すハイビーム配光パターンの一部が欠落した状態で示す図である。FIG. 6B is a diagram showing a state in which a part of the high beam light distribution pattern shown in FIG. 6A is missing. 図７は、第一実施形態の第１変形例を示す、図３と同様の図である。FIG. 7 is a view similar to FIG. 3, showing a first modification of the first embodiment; 図８は、第一実施形態の第２変形例を示す、図３と同様の図である。FIG. 8 is a view similar to FIG. 3, showing a second modification of the first embodiment; 図９Ａは、第一実施形態の第２変形例の作用を示す、図４Ａと同様の図である。FIG. 9A is a view similar to FIG. 4A showing the action of the second modification of the first embodiment; 図９Ｂは、図９Ａの比較例を示す図である。FIG. 9B is a diagram showing a comparative example of FIG. 9A. 図１０Ａは、第一実施形態の第２変形例の作用を示す、図５Ａと同様の図である。FIG. 10A is a view similar to FIG. 5A showing the action of the second modification of the first embodiment; 図１０Ｂは、図１０Ａの比較例を示す図である。FIG. 10B is a diagram showing a comparative example of FIG. 10A. 図１１は、第一実施形態の第３変形例を示す、図３と同様の図である。FIG. 11 is a view similar to FIG. 3, showing a third modification of the first embodiment; 図１２は、本願発明の第二実施形態に係る車両用灯具を示す側断面図である。FIG. 12 is a side sectional view showing a vehicle lamp according to a second embodiment of the present invention. 図１３は、図１２のXIII方向矢視図である。13 is a view in the direction of arrow XIII in FIG. 12. FIG. 図１４は、図１３のXIV－XIV線断面図である。14 is a cross-sectional view taken along line XIV-XIV of FIG. 13. FIG. 図１５Ａは、図１２に示す車両用灯具からの照射光によって形成されるロービーム配光パターンを示す図である。15A is a diagram showing a low-beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG. 12. FIG. 図１５Ｂは、第二実施形態の比較例を示す、図１５Ａと同様の図である。FIG. 15B is a view similar to FIG. 15A showing a comparative example of the second embodiment. 図１６は、図１２に示す車両用灯具からの照射光によって形成されるハイビーム配光パターンを示す図である。FIG. 16 is a diagram showing a high beam light distribution pattern formed by light emitted from the vehicle lamp shown in FIG. 図１７は、第二実施形態の第１変形例を示す、図１３と同様の図である。FIG. 17 is a view similar to FIG. 13, showing a first modification of the second embodiment; 図１８Ａは、第二実施形態の第１変形例の作用を示す図であって、図１５Ａと同様の図である。FIG. 18A is a diagram showing the action of the first modification of the second embodiment, similar to FIG. 15A. 図１８Ｂは、第二実施形態の第１変形例の作用を示す図であって、図１６と同様の図である。FIG. 18B is a diagram similar to FIG. 16 showing the action of the first modification of the second embodiment. 図１９は、第二実施形態の第２変形例を示す、図１４と同様の図である。FIG. 19 is a view similar to FIG. 14, showing a second modification of the second embodiment. 図２０Ａは、第二実施形態の第２変形例の作用を示す、図１８Ａと同様の図である。FIG. 20A is a view similar to FIG. 18A showing the action of the second modification of the second embodiment; 図２０Ｂは、第二実施形態の第２変形例の作用を示す、図１８Ｂと同様の図である。FIG. 20B is a view similar to FIG. 18B showing the action of the second modification of the second embodiment. 図２１は、第二実施形態の第３変形例を示す、図１３と同様の図である。FIG. 21 is a view similar to FIG. 13, showing a third modification of the second embodiment; 図２２は、第二実施形態の第３変形例を示す、図１４と同様の図である。FIG. 22 is a view similar to FIG. 14, showing a third modification of the second embodiment;
　以下、図面を用いて、本願発明の実施の形態について説明する。 Embodiments of the present invention will be described below with reference to the drawings.
［第一実施形態］
　図１は、本願発明の第一実施形態に係る車両用灯具１０を示す側断面図である。また、図２は、図１のII方向矢視図である。 [First embodiment]
FIG. 1 is a side sectional view showing a vehicle lamp 10 according to a first embodiment of the present invention. 2 is a view taken in the direction of arrow II in FIG. 1. FIG.
　これらの図において、Ｘで示す方向が「灯具前方」であり、Ｙで示す方向が「灯具前方」と直交する「左方向」（灯具正面視では「右方向」）であり、Ｚで示す方向が「上方向」である。これら以外の図においても同様である。 In these figures, the direction indicated by X is the "front of the lamp", the direction indicated by Y is the "left direction" ("right direction" when viewed from the front of the lamp) orthogonal to the "front of the lamp", and the direction indicated by Z. is the "upward direction". The same applies to figures other than these.
　車両用灯具１０は、車両の前端部に設けられるヘッドランプであって、ランプボディ１２と透光カバー１４とで形成される灯室内に、灯具ユニット２０が収容された構成を備えている。 The vehicle lamp 10 is a headlamp provided at the front end of a vehicle, and has a configuration in which a lamp unit 20 is accommodated in a lamp chamber formed by a lamp body 12 and a translucent cover 14 .
　図３は、図２のIII－III線断面図である。 FIG. 3 is a cross-sectional view taken along line III-III in FIG.
　図３にも示すように、灯具ユニット２０は、いわゆるプロジェクタ型の灯具ユニットであって、光源としての複数の第１発光素子３０および第２発光素子４０と、第１リフレクタ３２および第２リフレクタ４２と、投影レンズ５０とを備えている。また、灯具ユニット２０は、灯具ユニット２０からの照射光によってロービーム配光パターンとハイビーム配光パターンとを選択的に形成し得るように構成されている。 As also shown in FIG. 3, the lamp unit 20 is a so-called projector-type lamp unit, and includes a plurality of first light emitting elements 30 and second light emitting elements 40 as light sources, and a first reflector 32 and a second reflector 42. , and a projection lens 50 . Further, the lamp unit 20 is configured to selectively form a low beam light distribution pattern and a high beam light distribution pattern with the light emitted from the lamp unit 20 .
　具体的には、複数の第１発光素子３０はロービーム照射時およびハイビーム照射時に点灯するように構成されており、複数の第２発光素子４０はハイビーム照射時に追加点灯するように構成されている。 Specifically, the plurality of first light emitting elements 30 are configured to light during low beam irradiation and high beam irradiation, and the plurality of second light emitting elements 40 are configured to additionally light during high beam irradiation.
　そして、灯具ユニット２０は、複数の第１発光素子３０からの直射光および複数の第１発光素子３０から出射して第１リフレクタ３２で反射した光を、投影レンズ５０を介して灯具前方へ向けて照射することによりロービーム配光パターンを形成する。また、複数の第２発光素子４０からの直射光および複数の第２発光素子４０から出射して第２リフレクタ４２で反射した光を、投影レンズ５０を介して灯具前方へ向けて照射することによりハイビーム用の付加配光パターンを形成する。 The lamp unit 20 directs the direct light from the plurality of first light emitting elements 30 and the light emitted from the plurality of first light emitting elements 30 and reflected by the first reflector 32 through the projection lens 50 toward the front of the lamp. A low-beam light distribution pattern is formed by irradiating with a light beam. In addition, direct light from the plurality of second light emitting elements 40 and light emitted from the plurality of second light emitting elements 40 and reflected by the second reflector 42 are projected through the projection lens 50 toward the front of the lamp. An additional light distribution pattern for high beam is formed.
　なお、図３においては、第１発光素子３０からの出射光の光路を実線で示しており、第２発光素子４０からの出射光の光路を破線で示している。 In FIG. 3, the optical path of light emitted from the first light emitting element 30 is indicated by solid lines, and the optical path of light emitted from the second light emitting element 40 is indicated by broken lines.
　次に、灯具ユニット２０の具体的な構成について説明する。 Next, a specific configuration of the lamp unit 20 will be described.
　図３に示すように、投影レンズ５０は、前面が凸曲面状に形成された平凸非球面レンズで構成されており、灯具前後方向に延びる光軸Ａｘを有している。投影レンズ５０は、投影レンズ５０の後側焦点Ｆを含む焦点面である後側焦点面上に形成される光源像を、反転像として灯具前方、すなわち車両前方の仮想鉛直スクリーン上に投影する。 As shown in FIG. 3, the projection lens 50 is composed of a plano-convex aspherical lens with a convex curved front surface, and has an optical axis Ax extending in the longitudinal direction of the lamp. The projection lens 50 projects a light source image formed on a rear focal plane including the rear focal point F of the projection lens 50 as an inverted image onto a virtual vertical screen in front of the lamp, that is, in front of the vehicle.
　投影レンズ５０は、その外周部においてレンズホルダ５２に支持されている。レンズホルダ５２は、ヒートシンク５４に支持されている。 The projection lens 50 is supported by a lens holder 52 at its outer peripheral portion. The lens holder 52 is supported by a heat sink 54 .
　図２に示すように、複数の第１発光素子３０は、光軸Ａｘよりも上方側において左右方向に並んだ状態で配置されており、複数の第２発光素子４０は、光軸Ａｘよりも下方側において左右方向に並んだ状態で配置されている。 As shown in FIG. 2, the plurality of first light emitting elements 30 are arranged side by side in the left-right direction above the optical axis Ax, and the plurality of second light emitting elements 40 are arranged above the optical axis Ax. They are arranged side by side in the left-right direction on the lower side.
　複数の第１発光素子３０は、いずれも矩形状、具体的には正方形の発光面３０ａを有する１１個の白色発光ダイオードで構成されており、互いに僅かな間隔をおいて配置されている。より詳細には、光軸Ａｘの真上に配置された第１発光素子３０、および当該第１発光素子３０の右側（灯具正面視では左側）に配置された５個の第１発光素子３０は、当該第１発光素子３０の左側（灯具正面視では右側）に配置された残り５個の第１発光素子３０に対して下方側に変位した状態で配置されている。 Each of the plurality of first light emitting elements 30 is composed of 11 white light emitting diodes each having a rectangular, more specifically, a square light emitting surface 30a, which are arranged at small intervals from each other. More specifically, the first light emitting element 30 arranged directly above the optical axis Ax and the five first light emitting elements 30 arranged on the right side of the first light emitting element 30 (on the left side when viewed from the front of the lamp) are , are displaced downward with respect to the remaining five first light emitting elements 30 arranged on the left side of the first light emitting element 30 (on the right side in front view of the lamp).
　一方、複数の第２発光素子４０は、いずれも矩形状、具体的には発光面３０ａと同一サイズの正方形の発光面４０ａを有する１３個の白色発光ダイオードで構成されており、互いに僅かな間隔をおいて横一列で配置されている。 On the other hand, each of the plurality of second light emitting elements 40 is composed of 13 white light emitting diodes each having a rectangular shape, specifically, a square light emitting surface 40a having the same size as the light emitting surface 30a. are arranged in a horizontal row.
　複数の第１発光素子３０は一斉に点灯するように構成されているが、複数の第２発光素子４０は一斉に点灯するとともに個別にも点灯し得るように構成されている。すなわち、複数の第２発光素子４０の各々は、図示しない電子制御ユニットによって自車の走行状況に応じて点消灯制御が行われる。自車の走行状況は、例えば、自車の舵角データ、ナビゲーションデータ、前方走行路の画像データ等の検出値に基づいて把握することが可能である。 The plurality of first light-emitting elements 30 are configured to light up all at once, but the plurality of second light-emitting elements 40 are configured to light up all at once as well as individually. That is, each of the plurality of second light-emitting elements 40 is controlled to be turned on and off according to the driving conditions of the own vehicle by an electronic control unit (not shown). The driving condition of the own vehicle can be grasped, for example, based on detection values such as steering angle data of the own vehicle, navigation data, image data of the road ahead.
　複数の第１発光素子３０および第２発光素子４０は共通の基板５６に搭載されており、基板５６はヒートシンク５４に支持されている。 A plurality of first light emitting elements 30 and second light emitting elements 40 are mounted on a common substrate 56 , and the substrate 56 is supported by a heat sink 54 .
　図３に示すように、基板５６は、光軸Ａｘと直交する鉛直面に対して後傾した状態で配置されている。基板５６の鉛直面に対する後傾角度は１０～２０°、例えば１５°程度の値に設定されている。これにより複数の第１発光素子３０および第２発光素子４０は、その発光面３０ａ、４０ａを灯具正面方向に対して１０～２０°、例えば１５°程度上向きの方向へ向けた状態、すなわち投影レンズ５０へ向けた状態で配置されている。 As shown in FIG. 3, the substrate 56 is arranged in a state tilted backward with respect to a vertical plane perpendicular to the optical axis Ax. The backward tilt angle of the substrate 56 with respect to the vertical plane is set to a value of 10 to 20°, for example, about 15°. As a result, the plurality of first light-emitting elements 30 and second light-emitting elements 40 have their light-emitting surfaces 30a and 40a directed upward by 10 to 20°, for example, about 15° with respect to the front direction of the lamp, that is, the projection lens. It is positioned facing 50.
　第１リフレクタ３２および第２リフレクタ４２は、基板５６よりも灯具前方側に配置されている。第１リフレクタ３２および第２リフレクタ４２は一体的に形成されており、その左右両端部においてヒートシンク５４に支持されている。 The first reflector 32 and the second reflector 42 are arranged on the front side of the lamp with respect to the board 56 . The first reflector 32 and the second reflector 42 are integrally formed and supported by heat sinks 54 at both left and right ends thereof.
　第１リフレクタ３２は、複数の第１発光素子３０を囲むように形成された反射面３２ａを有しており、反射面３２ａにおいて複数の第１発光素子３０からの出射光を投影レンズ５０へ向けて反射させるように構成されている。反射面３２ａは、横長の凹曲面状の反射面形状を有しており、反射面３２ａの上端縁は灯具正面視において略横長楕円形の外形形状を有している。 The first reflector 32 has a reflecting surface 32a formed so as to surround the plurality of first light emitting elements 30. The light emitted from the plurality of first light emitting elements 30 is directed toward the projection lens 50 on the reflecting surface 32a. It is configured to reflect The reflecting surface 32a has a horizontally elongated concave surface shape, and the upper edge of the reflecting surface 32a has a substantially horizontally elongated elliptical outer shape when viewed from the front of the lamp.
　一方、第２リフレクタ４２は、複数の第２発光素子４０を囲むように形成された反射面４２ａを有しており、反射面４２ａにおいて複数の第２発光素子４０からの出射光を投影レンズ５０へ向けて反射させるように構成されている。反射面４２ａは、複数の第２発光素子４０の各々に対して、その上下両側に１対の小反射面４２ｓが配置されている。そして、上下１対の小反射面４２ｓは、各第２発光素子４０からの出射光を略平行光として投影レンズ５０へ向けて反射させる。 On the other hand, the second reflector 42 has a reflecting surface 42a formed so as to surround the plurality of second light emitting elements 40, and the light emitted from the plurality of second light emitting elements 40 is projected onto the projection lens 50 at the reflecting surface 42a. configured to reflect toward A pair of small reflecting surfaces 42s are arranged on both upper and lower sides of each of the plurality of second light emitting elements 40 in the reflecting surface 42a. The pair of upper and lower small reflecting surfaces 42s reflect the emitted light from each of the second light emitting elements 40 toward the projection lens 50 as substantially parallel light.
　第１リフレクタ３２の反射面３２ａには、複数の第１発光素子３０を反射面３２ａの外周縁近傍において囲む開口部３２ｂが形成されている。開口部３２ｂは、複数の第１発光素子３０の配列に沿って左右段違いで略横長矩形状に延びるように形成されている。 The reflecting surface 32a of the first reflector 32 is formed with an opening 32b surrounding the plurality of first light emitting elements 30 in the vicinity of the outer periphery of the reflecting surface 32a. The openings 32b are formed so as to extend along the arrangement of the plurality of first light emitting elements 30 in a substantially laterally elongated rectangular shape with left and right steps.
　一方、第２リフレクタ４２の反射面４２ａには、複数の第２発光素子４０を反射面４２ａの外周縁近傍において囲む横長の開口部４２ｂが形成されている。開口部４２ｂは、複数の第２発光素子４０の配列に沿って横長矩形状に延びるように形成されている。 On the other hand, the reflecting surface 42a of the second reflector 42 is formed with a horizontally long opening 42b surrounding the plurality of second light emitting elements 40 near the outer periphery of the reflecting surface 42a. The opening 42b is formed to extend in a horizontally long rectangular shape along the arrangement of the plurality of second light emitting elements 40 .
　複数の第１発光素子３０と複数の第２発光素子４０との間には、複数の第１発光素子３０からの直射光および第１リフレクタ３２で反射した複数の第１発光素子３０からの出射光の一部を遮光してロービーム配光パターンのカットオフラインを形成するためのシェード６０が配置されている。 Direct light from the plurality of first light emitting elements 30 and light emitted from the plurality of first light emitting elements 30 reflected by the first reflector 32 are separated between the plurality of first light emitting elements 30 and the plurality of second light emitting elements 40 . A shade 60 is provided for blocking part of the incident light and forming a cut-off line for the low-beam light distribution pattern.
　シェード６０は、第１リフレクタ３２および第２リフレクタ４２と一体的に形成されている。すなわち、シェード６０は、第１リフレクタ３２および第２リフレクタ４２の接続部分が楔形の鉛直断面形状で灯具前方へ向けて延びることによって形成されている。また、シェード６０の上面が第１リフレクタ３２の反射面３２ａの一部を構成するとともに、シェード６０の下面が第２リフレクタ４２の反射面４２ａの一部を構成している。 The shade 60 is integrally formed with the first reflector 32 and the second reflector 42. That is, the shade 60 is formed by extending the connecting portion of the first reflector 32 and the second reflector 42 toward the front of the lamp with a wedge-shaped vertical cross section. The upper surface of the shade 60 forms part of the reflecting surface 32 a of the first reflector 32 , and the lower surface of the shade 60 forms part of the reflecting surface 42 a of the second reflector 42 .
　シェード６０の前端縁６０ａは、投影レンズ５０の後側焦点Ｆの位置において光軸Ａｘと直交する鉛直面に沿って、左右段違いで左右方向に延びるように形成されている。具体的には、前端縁６０ａは、光軸Ａｘよりも左側の部分（灯具正面視では右側の部分）が光軸Ａｘに対してやや上方側の位置において水平方向に延びており、光軸Ａｘよりも右側の部分（灯具正面視では左側の部分）が光軸Ａｘに対して僅かに下方側の位置において水平方向に延びている。また、前端縁６０ａの左端部が斜め左上方向に延びた状態で光軸Ａｘよりも左側の部分と接続されている。 The front edge 60a of the shade 60 is formed so as to extend in the left-right direction at the position of the rear focal point F of the projection lens 50 along a vertical plane perpendicular to the optical axis Ax. Specifically, the front edge 60a extends horizontally at a position slightly above the optical axis Ax at the left side of the optical axis Ax (the right side when viewed from the front of the lamp). The right side portion (the left side portion when viewed from the front of the lamp) extends horizontally at a position slightly below the optical axis Ax. Further, the left end portion of the front edge 60a is connected to the portion on the left side of the optical axis Ax while extending obliquely in the upper left direction.
　図３に示すように、複数の第１発光素子３０と投影レンズ５０との間には、複数の第１発光素子３０から投影レンズ５０の上部領域、すなわち光軸Ａｘよりも上方側に位置する領域へ向かう直射光の一部を遮光する第２シェード７０が配置されている。第２シェード７０は、板状部材で構成されており、基板５６と略平行に配置された状態で、第２シェード７０の上端部において第１リフレクタ３２に支持されている。 As shown in FIG. 3, between the plurality of first light emitting elements 30 and the projection lens 50, there is an upper region of the plurality of first light emitting elements 30 to the projection lens 50, that is, the upper side of the optical axis Ax. A second shade 70 is arranged to block part of the direct light directed toward the area. The second shade 70 is formed of a plate-like member, and is supported by the first reflector 32 at the upper end portion of the second shade 70 while being arranged substantially parallel to the substrate 56 .
　図２に示すように、第２シェード７０は、灯具正面視において１１個の第１発光素子３０のうち左右方向の中央部に位置する５個の第１発光素子３０と部分的に重複する位置関係で配置されている。 As shown in FIG. 2, the second shade 70 is located at a position that partially overlaps the five first light emitting elements 30 positioned in the center in the left-right direction among the eleven first light emitting elements 30 when viewed from the front of the lamp. placed in relation to each other.
　具体的には、光軸Ａｘの真上に位置する第１発光素子３０、および当該第１発光素子３０の右側に隣接する第１発光素子３０は、その上端部が第２シェード７０に隠れている。また、さらにその右側に隣接する第１発光素子３０は、その左上端部が第２シェード７０に隠れている。また、光軸Ａｘの真上に位置する第１発光素子３０の左側に隣接する第１発光素子３０は、その上半部が第２シェード７０に隠れている。また、さらにその左側に隣接する第１発光素子３０は、その右上四半部が第２シェード７０に隠れている。 Specifically, the first light emitting element 30 located directly above the optical axis Ax and the first light emitting element 30 adjacent to the right side of the first light emitting element 30 are hidden by the second shade 70 at their upper ends. there is Further, the upper left end of the first light emitting element 30 adjacent to the right thereof is hidden by the second shade 70 . The upper half of the first light emitting element 30 adjacent to the left side of the first light emitting element 30 located directly above the optical axis Ax is hidden by the second shade 70 . Further, the upper right quarter of the first light emitting element 30 adjacent to the left thereof is hidden by the second shade 70 .
　第２シェード７０の下端面は、複数の第１発光素子３０からの直射光が入射しない角度で灯具前方へ向けて斜め上方に延びるように形成されている。 The lower end surface of the second shade 70 is formed to extend obliquely upward toward the front of the lamp at an angle at which direct light from the plurality of first light emitting elements 30 does not enter.
　図１および図２に示すように、第１リフレクタ３２には、第２シェード７０を配置するための切欠き部３２ｃが形成されるとともに第２シェード７０の上端部を支持するための支持部３２ｄが形成されている。 As shown in FIGS. 1 and 2, the first reflector 32 is formed with a notch portion 32c for disposing the second shade 70 and a support portion 32d for supporting the upper end portion of the second shade 70. is formed.
　図４Ａは、車両用灯具１０の灯具ユニット２０から灯具前方へ向けて照射される光により、車両前方２５ｍの位置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配光パターンＰＬを透視的に示す図である。 FIG. 4A is a perspective view of a low-beam light distribution pattern PL formed on a virtual vertical screen arranged at a position 25 m in front of the vehicle by light emitted from the lighting unit 20 of the vehicle lighting 10 toward the front of the lighting. FIG. 4 is a diagram showing;
　図４Ａに示すように、ロービーム配光パターンＰＬは、左配光のロービーム配光パターンであって、その上端縁に左右段違いのカットオフラインＣＬ１、ＣＬ２を有している。カットオフラインＣＬ１、ＣＬ２は、灯具正面方向の消点であるＨ－Ｖを鉛直方向に通るＶ－Ｖ線を境にして左右段違いで水平方向に延びており、Ｖ－Ｖ線よりも右側の対向車線側部分が下段カットオフラインＣＬ１として形成されるとともに、Ｖ－Ｖ線よりも左側の自車線側部分が、下段カットオフラインＣＬ１から傾斜部を介して段上がりになった上段カットオフラインＣＬ２として形成されている。 As shown in FIG. 4A, the low-beam light distribution pattern PL is a left-handed low-beam light distribution pattern, and has cutoff lines CL1 and CL2 that are uneven on the left and right at the upper edge thereof. The cut-off lines CL1 and CL2 extend in the horizontal direction with different levels on the left and right of the line VV passing vertically through the vanishing point HV in the front direction of the lamp. The lane side portion is formed as a lower cutoff line CL1, and the own lane side portion on the left side of the VV line is formed as an upper cutoff line CL2 rising from the lower cutoff line CL1 via an inclined portion. ing.
　ロービーム配光パターンＰＬにおいて、下段カットオフラインＣＬ１とＶ－Ｖ線との交点であるエルボ点Ｅは、Ｈ－Ｖの０．５～０．６°程度下方に位置している。 In the low-beam light distribution pattern PL, the elbow point E, which is the intersection of the lower cutoff line CL1 and the line VV, is located approximately 0.5 to 0.6° below HV.
　上述したように、ロービーム配光パターンＰＬは、複数の第１発光素子３０からの直射光および第１リフレクタ３２からの反射光によって形成される。また、左右段違いのカットオフラインＣＬ１、ＣＬ２は、シェード６０の前端縁６０ａの反転投影像として形成される。 As described above, the low-beam light distribution pattern PL is formed by direct light from the multiple first light emitting elements 30 and reflected light from the first reflector 32 . The left and right stepped cut-off lines CL1 and CL2 are formed as an inverted projected image of the front edge 60a of the shade 60. As shown in FIG.
　一方、図４Ｂは、本実施形態の比較例を示す図であって、仮に灯具ユニット２０が第２シェード７０を備えていないとした場合に形成されるロービーム配光パターンＰＬ´を示す図である。 On the other hand, FIG. 4B is a diagram showing a comparative example of the present embodiment, and is a diagram showing a low-beam light distribution pattern PL' that would be formed if the lamp unit 20 did not have the second shade 70. As shown in FIG. .
　図４Ｂに示すように、ロービーム配光パターンＰＬ´もロービーム配光パターンＰＬと同様の配光パターンとして形成されるが、その照度分布がロービーム配光パターンＰＬの場合と部分的に異なる。 As shown in FIG. 4B, the low-beam light distribution pattern PL' is also formed as a light distribution pattern similar to the low-beam light distribution pattern PL, but the illuminance distribution is partially different from that of the low-beam light distribution pattern PL.
　すなわち、ロービーム配光パターンＰＬ´は、その下部領域が必要以上に明るい過剰明部Ｐａ´として形成されている。このため、ロービーム配光パターンＰＬ´が灯具前方路面に形成されたとき、過剰明部Ｐａ´が位置する近距離領域が明るくなりすぎて遠距離領域、すなわち過剰明部Ｐａ´とカットオフラインＣＬ１、ＣＬ２との間の領域が見えにくくなってしまい、したがってロービーム照射時の前方視認性を十分に確保することができなくなってしまう。 That is, the low-beam light distribution pattern PL' is formed as an excessively bright portion Pa' in which the lower region is brighter than necessary. Therefore, when the low-beam light distribution pattern PL' is formed on the road surface in front of the lamp, the short-distance region where the excessively bright portion Pa' is located becomes too bright, and the long-distance region, that is, the excessively bright portion Pa' and the cutoff line CL1, The area between CL2 becomes difficult to see, and therefore, sufficient forward visibility cannot be ensured during low beam irradiation.
　これに対し、図４Ａに示すロービーム配光パターンＰＬは、その下部領域に過剰明部Ｐａ´が形成されていない。これは、本実施形態に係る灯具ユニット２０においては、複数の発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部が第２シェード７０によって遮光され、これによりロービーム配光パターンの下部領域を形成するための照射光が減少することによるものである。 On the other hand, in the low-beam light distribution pattern PL shown in FIG. 4A, the excessive bright portion Pa' is not formed in its lower region. This is because, in the lamp unit 20 according to the present embodiment, part of the direct light from the plurality of light emitting elements 30 directed to the upper region of the projection lens 50 is blocked by the second shade 70, and as a result, the lower portion of the low beam light distribution pattern is blocked. This is because the irradiation light for forming the regions is reduced.
　第２シェード７０は、１１個の第１発光素子３０のうち左右方向の中央部に位置する５個の第１発光素子３０からの直射光の一部を遮光する位置に配置されているので、灯具前方路面の近距離領域における正面部分の明るさが重点的に抑制され、近距離領域の左右両側部分の明るさは一定量確保されている。 The second shade 70 is arranged at a position that blocks part of the direct light from the five first light emitting elements 30 positioned in the center in the left-right direction among the eleven first light emitting elements 30. The brightness of the front portion in the short distance area of the road surface in front of the lamp is mainly suppressed, and a certain amount of brightness is ensured in the left and right side portions of the short distance area.
　図５Ａは、上記仮想鉛直スクリーン上に形成される、図４Ａに示すロービーム配光パターンＰＬのＶ－Ｖ線に沿った照度分布ＩＤｖを示す図であり、図５Ｂは、図５Ａの比較例を示す図である。 FIG. 5A is a diagram showing an illuminance distribution IDv along line VV of the low-beam light distribution pattern PL shown in FIG. 4A formed on the virtual vertical screen, and FIG. 5B is a comparative example of FIG. 5A. FIG. 10 shows.
　図５Ａに示すように、ロービーム配光パターンＰＬの照度分布ＩＤｖは、Ｈ－Ｈ線に対応する０°付近からその下方側にかけて照度Ｅｖが急激に上昇している。これはロービーム配光パターンＰＬの照度ＥｖがカットオフラインＣＬ１、ＣＬ２の下方近傍領域において最も高くなることと対応している。そして、照度分布ＩＤｖは、１°Ｄ付近で最高照度になった後、下向き角度が大きくなるにつれて急激に低下し、１０°Ｄ付近で略ゼロになるまで滑らかに低下している。 As shown in FIG. 5A, in the illuminance distribution IDv of the low-beam light distribution pattern PL, the illuminance Ev sharply rises from near 0° corresponding to the HH line to its lower side. This corresponds to the fact that the illuminance Ev of the low-beam light distribution pattern PL is highest in the regions below the cutoff lines CL1 and CL2. The illuminance distribution IDv reaches the maximum illuminance around 1°D, then sharply drops as the downward angle increases, and then smoothly drops to approximately zero around 10°D.
　一方、図５Ｂに示すように、ロービーム配光パターンＰＬ´の照度分布ＩＤｖ´も、０°付近からその下方にかけて照度Ｅｖが急激に上昇し、１°Ｄ付近で最高照度になった後、下向き角度が大きくなるにつれて急激に低下し、１０°Ｄ付近で略ゼロになるまで低下するが、低下途中の４～６°Ｄ付近に膨らみが生じている（図５Ｂ中の破線領域Ａ参照）。 On the other hand, as shown in FIG. 5B, in the illuminance distribution IDv' of the low-beam light distribution pattern PL', the illuminance Ev also rises sharply from near 0° to below it, reaching the maximum illuminance near 1°D, and then downward. As the angle increases, it drops sharply and drops to almost zero at around 10°D, but a bulge occurs around 4 to 6°D in the middle of the drop (see dashed line area A in FIG. 5B).
　図５Ａでは、ロービーム配光パターンＰＬ´の照度分布ＩＤｖ´を２点鎖線で示している。図５Ａ中、破線領域Ａで示すように、ロービーム配光パターンＰＬは、ロービーム配光パターンＰＬ´に対して４～６°Ｄ付近の照度Ｅｖが低い滑らかな照度分布となる。 In FIG. 5A, the illuminance distribution IDv' of the low-beam light distribution pattern PL' is indicated by a chain double-dashed line. As indicated by the dashed line area A in FIG. 5A, the low-beam light distribution pattern PL has a smooth illuminance distribution in which the illuminance Ev around 4 to 6°D is low with respect to the low-beam light distribution pattern PL'.
　そして、このような照度分布ＩＤｖを有するロービーム配光パターンＰＬが灯具前方路面に形成されることにより、近距離領域が明るくなりすぎて遠距離領域が見えにくくなってしまうのが未然に防止され、これによりロービーム照射時の前方視認性が十分に確保される。 By forming the low-beam light distribution pattern PL having such an illuminance distribution IDv on the road surface in front of the lamp, it is possible to prevent the short distance area from becoming too bright and the long distance area becoming difficult to see. This ensures sufficient forward visibility during low-beam illumination.
　図６Ａは、車両用灯具１０の灯具ユニット２０から灯具前方へ向けて照射される光により、上記仮想鉛直スクリーン上に形成されるハイビーム配光パターンＰＨを透視的に示す図である。 FIG. 6A is a view perspectively showing a high-beam light distribution pattern PH formed on the virtual vertical screen by light emitted from the lamp unit 20 of the vehicle lamp 10 toward the front of the lamp.
　図６Ａに示すように、ハイビーム配光パターンＰＨは、ロービーム配光パターンＰＬに対して付加配光パターンＰＡが付加された合成配光パターンとして形成されている。 As shown in FIG. 6A, the high beam light distribution pattern PH is formed as a synthetic light distribution pattern in which the additional light distribution pattern PA is added to the low beam light distribution pattern PL.
　付加配光パターンＰＡは、１３個の第２発光素子４０からの直射光および１３個の第２発光素子４０から出射して第２リフレクタ４２で反射した光、具体的には第２リフレクタ４２の反射面４２ａを構成する１３対の小反射面４２ｓで反射した光、によって形成される配光パターンである。 The additional light distribution pattern PA includes the direct light from the 13 second light emitting elements 40 and the light emitted from the 13 second light emitting elements 40 and reflected by the second reflector 42 , specifically the light from the second reflector 42 . It is a light distribution pattern formed by the light reflected by 13 pairs of small reflecting surfaces 42s that constitute the reflecting surface 42a.
　すなわち、付加配光パターンＰＡは、１３個の第２発光素子４０の各々の点灯によって形成される１３個の小配光パターンＰＡａの合成配光パターンとして形成されている。 That is, the additional light distribution pattern PA is formed as a composite light distribution pattern of 13 small light distribution patterns PAa formed by lighting each of the 13 second light emitting elements 40 .
　１３個の小配光パターンＰＡａは、いずれも略矩形状の配光パターンとして形成され、かつ、互いに隣接する小配光パターンＰＡａ同士が僅かに重複した状態で横一列に形成されている。また、各小配光パターンＰＡａは、各第２発光素子４０からの直射光およびリフレクタ４２の各対の小反射面４２ｓからの反射光の一部がシェード６０によって遮光される。これにより、各小配光パターンＰＡａは、やや縦長の略矩形状の配光パターンとして形成され、その下端縁はカットオフラインＣＬ１、ＣＬ２に沿って延びるように形成されている。 Each of the 13 small light distribution patterns PAa is formed as a substantially rectangular light distribution pattern, and the small light distribution patterns PAa adjacent to each other are formed in a horizontal row while slightly overlapping each other. In each small light distribution pattern PAa, the direct light from each second light emitting element 40 and part of the reflected light from each pair of small reflecting surfaces 42 s of the reflector 42 are blocked by the shade 60 . As a result, each small light distribution pattern PAa is formed as a slightly vertically elongated substantially rectangular light distribution pattern, and the lower edge thereof is formed so as to extend along the cutoff lines CL1 and CL2.
　図６Ｂは、図６Ａに示すハイビーム配光パターンＰＨの一部を欠落させた中間的配光パターンＰＭを透視的に示す図である。 FIG. 6B is a view perspectively showing an intermediate light distribution pattern PM in which a part of the high beam light distribution pattern PH shown in FIG. 6A is omitted.
　図６Ｂにおいては、左から６番目の第２発光素子４０の消灯によって、付加配光パターンＰＡを構成する１３個の小配光パターンＰＡａのうち右から６番目の小配光パターンＰＡａが欠落した状態にある中間的配光パターンＰＭを示している。 In FIG. 6B, the sixth small light distribution pattern PAa from the right of the 13 small light distribution patterns PAa forming the additional light distribution pattern PA is missing due to the turning off of the second light emitting element 40 that is sixth from the left. shows an intermediate light distribution pattern PM in the state.
　このような中間的配光パターンＰＭを形成することにより、灯具ユニット２０からの照射光が対向車２に当たらないようにし、これにより対向車２のドライバーにグレアを与えてしまわない範囲内でできるだけ前方走行路を幅広く照射することができるように構成されている。 By forming such an intermediate light distribution pattern PM, the irradiation light from the lamp unit 20 is prevented from striking the oncoming vehicle 2, and as much as possible within a range that does not give glare to the driver of the oncoming vehicle 2. It is configured so that it can illuminate a wide area ahead.
　そして、対向車２の位置が変化するのに伴って、消灯の対象となる第２発光素子４０を順次切り換えることにより中間的配光パターンＰＭの形状を変化させ、これにより対向車２のドライバーにグレアを与えてしまわない範囲内でできるだけ前方走行路を幅広く照射する状態を維持することができる。 As the position of the oncoming vehicle 2 changes, the second light emitting elements 40 to be turned off are sequentially switched to change the shape of the intermediate light distribution pattern PM, thereby changing the shape of the intermediate light distribution pattern PM. It is possible to maintain the state of illuminating the road ahead as wide as possible within the range that does not give glare.
　なお、対向車２の存在は、図示しない車載カメラ等によって検出する。そして、前方走行路に前走車が存在したり、前方走行路の路肩部分に歩行者が存在したりするような場合にも、これを検出して一部の小配光パターンＰＡａを欠落させることによりグレアを与えてしまわないように構成されている。 The existence of the oncoming vehicle 2 is detected by an on-board camera (not shown) or the like. Even when a vehicle ahead exists on the road ahead or a pedestrian exists on the shoulder of the road ahead, this is detected and part of the small light distribution pattern PAa is omitted. Therefore, it is configured so as not to give glare.
　次に本実施形態の作用効果について説明する。 Next, the effects of this embodiment will be described.
　本実施形態に係る車両用灯具１０の灯具ユニット２０は、複数の第１発光素子（発光素子）３０からの出射光を、投影レンズ５０を介して灯具前方へ向けて照射することによりロービーム配光パターンＰＬを形成するように構成されている。また、複数の第１発光素子３０は、左右方向に並んだ状態でかつ発光面３０ａを投影レンズ５０へ向けた状態で配置されている。また、複数の第１発光素子３０と投影レンズ５０との間には、ロービーム配光パターンＰＬのカットオフラインＣＬ１、ＣＬ２を形成するために複数の第１発光素子３０からの出射光の一部を遮光するシェード６０が配置されている。また、複数の第１発光素子３０と投影レンズ５０との間には、複数の第１発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部を遮光する第２シェード７０が配置されている。このため、次のような作用効果を得ることができる。 The lamp unit 20 of the vehicle lamp 10 according to the present embodiment irradiates the light emitted from the plurality of first light emitting elements (light emitting elements) 30 through the projection lens 50 toward the front of the lamp to achieve a low beam distribution. It is configured to form a pattern PL. Also, the plurality of first light emitting elements 30 are arranged side by side in the left-right direction with the light emitting surfaces 30 a facing the projection lens 50 . In addition, between the plurality of first light emitting elements 30 and the projection lens 50, part of the emitted light from the plurality of first light emitting elements 30 is arranged to form the cutoff lines CL1 and CL2 of the low beam light distribution pattern PL. A shade 60 for blocking light is arranged. A second shade 70 is arranged between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 . ing. Therefore, the following effects can be obtained.
　すなわち、ロービーム配光パターンＰＬの下部領域が必要以上に明るくなってしまうのは、投影レンズ５０の上部領域に入射した複数の第１発光素子３０からの直射光によるものである。そこで、複数の第１発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部を第２シェード７０によって遮光することにより、ロービーム配光パターンＰＬの下部領域が明るくなりすぎてしまうのを未然に防止することができる。 That is, the reason why the lower area of the low-beam light distribution pattern PL becomes brighter than necessary is due to the direct light from the plurality of first light emitting elements 30 entering the upper area of the projection lens 50 . Therefore, by shielding part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 with the second shade 70, the lower region of the low beam light distribution pattern PL is prevented from becoming too bright. It can be prevented before it happens.
　そして、これにより、ロービーム配光パターンＰＬが灯具前方路面に形成されたとき、近距離領域が明るくなりすぎて遠距離領域が見えにくくなってしまうのを未然に防止することができ、これによりロービーム照射時の前方視認性を十分に確保することができる。 Thus, when the low-beam light distribution pattern PL is formed on the road surface in front of the lamp, it is possible to prevent the short-distance area from becoming too bright and the long-distance area from becoming difficult to see. It is possible to sufficiently ensure forward visibility during irradiation.
　このように本実施形態によれば、複数の第１発光素子３０からの出射光を投影レンズ５０を介して灯具前方へ向けて照射するように構成された車両用灯具１０において、ロービーム照射時の前方視認性を十分に確保することができる。 As described above, according to the present embodiment, in the vehicle lamp 10 configured to irradiate the light emitted from the plurality of first light emitting elements 30 through the projection lens 50 toward the front of the lamp, Sufficient forward visibility can be ensured.
　また、本実施形態においては、第２シェード７０が、複数の第１発光素子３０のうち左右方向の両端部に位置する第１発光素子３０よりも左右方向の中央部に位置する第１発光素子３０からの直射光に対する遮光量が大きくなる位置に配置されている。このため、ロービーム配光パターンＰＬが灯具前方路面に形成されたとき、近距離領域における正面部分の明るさを重点的に抑制することができる。 In addition, in the present embodiment, the second shade 70 is the first light emitting element positioned at the center in the left-right direction relative to the first light emitting elements 30 positioned at both ends in the left-right direction among the plurality of first light-emitting elements 30 . It is arranged at a position where the direct light from 30 is blocked by a large amount. Therefore, when the low-beam light distribution pattern PL is formed on the road surface in front of the lamp, the brightness of the front portion in the short distance region can be suppressed intensively.
　したがって、灯具前方路面の近距離領域が明るくなりすぎて遠距離領域が見えにくくなってしまうのを未然に防止した上で、近距離領域の左右両側部分の明るさを一定量確保して側方視認性が損なわれてしまわないようにすることができる。 Therefore, it is possible to prevent the short distance area of the road surface in front of the lamp from becoming too bright and make the long distance area difficult to see. Visibility can be prevented from being spoiled.
　また、本実施形態においては、複数の第１発光素子３０からの出射光を投影レンズ５０へ向けて反射させる第１リフレクタ（リフレクタ）３２を備えているので、ロービーム配光パターンＰＬの明るさを増大させることができ、かつ、ロービーム配光パターンＰＬの配光分布の自由度を高めることができる。 Further, in the present embodiment, since the first reflector (reflector) 32 that reflects the light emitted from the plurality of first light emitting elements 30 toward the projection lens 50 is provided, the brightness of the low beam light distribution pattern PL is In addition, the degree of freedom of the light distribution of the low-beam light distribution pattern PL can be increased.
　さらに、本実施形態においては、第１リフレクタ３２がシェード６０と一体的に形成されているので、配光制御の精度を高めることができ、かつ、車両用灯具１０の部品点数の削減を図ることができる。 Furthermore, in the present embodiment, since the first reflector 32 is integrally formed with the shade 60, the accuracy of light distribution control can be improved and the number of parts of the vehicle lamp 10 can be reduced. can be done.
　また、本実施形態に係る車両用灯具１０の灯具ユニット２０は、ロービーム配光パターンＰＬとハイビーム配光パターンＰＨとを選択的に形成し得る。そして、ハイビーム照射時に追加点灯する複数の第２発光素子４０からの出射光を反射させる第２リフレクタ４２は第１リフレクタ３２と一体的に形成されているので、車両用灯具１０の部品点数の一層の削減を図ることができる。 Further, the lighting unit 20 of the vehicle lamp 10 according to the present embodiment can selectively form the low beam light distribution pattern PL and the high beam light distribution pattern PH. Further, since the second reflector 42 for reflecting the light emitted from the plurality of second light emitting elements 40 additionally lit during high beam irradiation is formed integrally with the first reflector 32, the number of parts of the vehicle lamp 10 is reduced. can be reduced.
　上記実施形態においては、第２シェード７０が１１個の第１発光素子３０のうち左右方向の中央部に位置する５個の第１発光素子３０からの直射光の一部を遮光する位置に配置されているものとして説明した。しかしながら、遮光対象となる第１発光素子３０の数や遮光量を適宜変更することも可能であり、これにより灯具前方路面の近距離領域の明るさの調整をすることが可能である。 In the above-described embodiment, the second shade 70 is arranged at a position that blocks part of the direct light emitted from the five first light emitting elements 30 positioned at the center in the left-right direction among the 11 first light emitting elements 30 . described as being However, it is also possible to appropriately change the number of the first light emitting elements 30 to be shaded and the amount of shade, thereby adjusting the brightness of the short-distance area of the road surface in front of the lamp.
　上記実施形態においては、投影レンズ５０が平凸非球面レンズで構成されているものとして説明したが、両凸レンズや凸メニスカスレンズ等で構成されたものとすることも可能であり、また、円形以外の外形形状を有する構成とすることも可能である。 In the above embodiment, the projection lens 50 is described as being composed of a plano-convex aspherical lens, but it is also possible to be composed of a biconvex lens, a convex meniscus lens, or the like. It is also possible to have a configuration having an outer shape of .
　上記実施形態においては、灯具ユニット２０として１１個の第１発光素子３０と１３個の第２発光素子４０とを備えているものとして説明したが、これ以外の個数の第１および第２発光素子３０、４０を備えた構成とすることも可能である。 In the above embodiment, the lamp unit 20 is described as having eleven first light emitting elements 30 and thirteen second light emitting elements 40, but the number of first and second light emitting elements other than this number may be different. A configuration with 30 and 40 is also possible.
　上記実施形態においては、複数の第１発光素子３０が左右段違いで配置されているものとして説明したが、これらが横一列で配置された構成とすることも可能である。 In the above-described embodiment, the plurality of first light emitting elements 30 are arranged in a staggered manner, but it is also possible to arrange them in a horizontal row.
　上記実施形態においては、複数の第１および第２発光素子３０、４０の各々の発光面３０ａ、４０ａが正方形の外形形状を有しているものとして説明したが、これ以外の外形形状、例えば縦長矩形状や横長矩形状の外形形状等を有する構成とすることも可能である。 In the above embodiment, the light emitting surfaces 30a and 40a of the plurality of first and second light emitting elements 30 and 40 have been described as having a square outer shape. It is also possible to adopt a configuration having an external shape such as a rectangular shape or a laterally long rectangular shape.
　上記実施形態においては、複数の第１および第２発光素子３０、４０からの出射光を有効利用するために第１および第２リフレクタ３２、４２が配置されているものとして説明したが、第１および第２リフレクタ３２、４２のいずれか一方または両方が配置されていない構成とすることも可能である。 In the above embodiment, the first and second reflectors 32, 42 are arranged to effectively utilize the light emitted from the plurality of first and second light emitting elements 30, 40. and second reflectors 32, 42, or both are not arranged.
　上記実施形態においては、車両用灯具１０の灯具ユニット２０が、ロービーム配光パターンＰＬとハイビーム配光パターンＰＨとを選択的に形成し得る構成として説明したが、ロービーム配光パターンＰＬのみを形成する構成とすることも可能である。 In the above embodiment, the lamp unit 20 of the vehicle lamp 10 has been described as being capable of selectively forming the low beam light distribution pattern PL and the high beam light distribution pattern PH, but only the low beam light distribution pattern PL is formed. It is also possible to configure
　次に、第一実施形態の変形例について説明する。 Next, a modification of the first embodiment will be described.
　まず、第一実施形態の第１変形例について説明する。 First, the first modified example of the first embodiment will be described.
　図７は、本変形例に係る車両用灯具の灯具ユニット１２０を示す、図３と同様の図である。 FIG. 7 is a view, similar to FIG. 3, showing a lamp unit 120 of a vehicle lamp according to this modified example.
　図７に示すように、灯具ユニット１２０の基本的な構成は上記実施形態の灯具ユニット２０と同様であるが、第２シェード１７０の構成が上記実施形態の場合と異なり、これに伴い第１リフレクタ１３２の構成も、図３に示す第１リフレクタ３２と一部異なる。 As shown in FIG. 7, the basic configuration of the lamp unit 120 is similar to that of the lamp unit 20 of the above embodiment, but the configuration of the second shade 170 is different from that of the above embodiment. The configuration of 132 is also partially different from the first reflector 32 shown in FIG.
　すなわち本変形例においても、複数の第１発光素子３０と投影レンズ５０との間には、複数の第１発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部を遮光する第２シェード１７０が配置されている。しかし、本変形例では、第２シェード１７０が第１リフレクタ１３２と一体的に形成されている点で上記実施形態の場合と異なる。 That is, in this modification as well, a second light emitting element 30 is provided between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 . A shade 170 is arranged. However, this modification differs from the above-described embodiment in that the second shade 170 is formed integrally with the first reflector 132 .
　第２シェード１７０は、上記実施形態の第２シェード７０と略同様の配置および形状で形成されている。 The second shade 170 is formed in substantially the same arrangement and shape as the second shade 70 of the above embodiment.
　なお、本変形例においても、第１リフレクタ１３２は、図３に示す第１リフレクタ３２と同様の反射面１３２ａおよび開口部１３２ｂを備えている。 Also in this modified example, the first reflector 132 has a reflecting surface 132a and an opening 132b similar to those of the first reflector 32 shown in FIG.
　また、本変形例においても、シェード６０および第２リフレクタ４２の構成については、図３に示す灯具ユニット２０と同様である。 Also in this modified example, the configurations of the shade 60 and the second reflector 42 are the same as those of the lamp unit 20 shown in FIG.
　本変形例の構成を採用することにより、配光制御の精度を高めることができ、かつ、車両用灯具の部品点数の削減を図ることができる。 By adopting the configuration of this modified example, it is possible to improve the accuracy of light distribution control and reduce the number of parts of the vehicle lamp.
　次に、第一実施形態の第２変形例について説明する。 Next, a second modified example of the first embodiment will be described.
　図８は、本変形例に係る車両用灯具の灯具ユニット２２０を示す、図３と同様の図である。 FIG. 8 is a view, similar to FIG. 3, showing a lighting unit 220 of a vehicle lamp according to this modified example.
　図８に示すように、灯具ユニット２２０の基本的な構成は、図３に示す灯具ユニット２０と同様であるが、第２シェード２７０の構成が灯具ユニット２０と異なる。 As shown in FIG. 8, the basic configuration of the lamp unit 220 is similar to that of the lamp unit 20 shown in FIG. 3, but the configuration of the second shade 270 is different.
　すなわち本変形例においても、複数の第１発光素子３０と投影レンズ５０との間には、複数の第１発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部を遮光する第２シェード２７０が配置されている。そして、第２シェード２７０は第１リフレクタ２３２と一体的に形成されており、かつ反射面２７０ａを備えている点で上記実施形態の場合と異なる。 That is, in this modification as well, a second light emitting element 30 is provided between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 . A shade 270 is arranged. The second shade 270 is formed integrally with the first reflector 232 and has a reflecting surface 270a, which is different from the above embodiment.
　第２シェード２７０の反射面２７０ａは、光軸Ａｘの上方において水平面に沿って延びるように形成されており、これにより複数の第１発光素子３０からの直射光を下向きに反射させて投影レンズ５０へ入射させるように構成されている。また、反射面２７０ａで反射した複数の第１発光素子３０からの直射光の一部は、第１リフレクタ２３２の反射面２３２ａで反射した後に投影レンズ５０へ入射するように構成されている。 The reflecting surface 270a of the second shade 270 is formed to extend along the horizontal plane above the optical axis Ax, thereby reflecting the direct light from the plurality of first light emitting elements 30 downward to the projection lens 50. is configured to be incident on the Also, part of the direct light from the plurality of first light emitting elements 30 reflected by the reflecting surface 270 a is configured to enter the projection lens 50 after being reflected by the reflecting surface 232 a of the first reflector 232 .
　なお、本変形例においても、第１リフレクタ２３２は、灯具ユニット２０の第１リフレクタ３２と同様の反射面２３２ａおよび開口部２３２ｂを備えている。 Also in this modified example, the first reflector 232 has a reflecting surface 232a and an opening 232b similar to those of the first reflector 32 of the lamp unit 20 .
　また、本変形例においても、シェード６０および第２リフレクタ４２の構成については、図３に示す灯具ユニット２０と同様である。 Also in this modified example, the configurations of the shade 60 and the second reflector 42 are the same as those of the lamp unit 20 shown in FIG.
　図９Ａは、本変形例の灯具ユニット２２０から灯具前方へ向けて照射される光により上記仮想鉛直スクリーン上に形成されるロービーム配光パターンＰＬ－２を透視的に示す図である。 FIG. 9A is a view perspectively showing a low-beam light distribution pattern PL-2 formed on the virtual vertical screen by the light emitted from the lamp unit 220 of this modified example toward the front of the lamp.
　図９Ａに示すように、ロービーム配光パターンＰＬ－２は、図４Ａに示すロービーム配光パターンＰＬに対して遠方照射用配光パターンＰａ－２が追加された配光パターンとして形成されている。 As shown in FIG. 9A, the low-beam light distribution pattern PL-2 is formed as a light distribution pattern in which a distant illumination light distribution pattern Pa-2 is added to the low-beam light distribution pattern PL shown in FIG. 4A.
　一方、図９Ｂは、本変形例の比較例を示す図であって、仮に灯具ユニット２２０が第２シェード２７０を備えていないとした場合に形成されるロービーム配光パターンＰＬ´を示す図であって、図４Ｂと同様の図である。 On the other hand, FIG. 9B is a diagram showing a comparative example of this modification, and is a diagram showing a low-beam light distribution pattern PL' that would be formed if the lamp unit 220 did not have the second shade 270. FIG. FIG. 4B is a view similar to FIG. 4B;
　図９Ａに示すロービーム配光パターンＰＬ－２の遠方照射用配光パターンＰａ－２は、図９Ｂに示すロービーム配光パターンＰＬ´においてその下部領域に形成されていた過剰明部Ｐａ´と略同一形状の配光パターンが、カットオフラインＣＬ１、ＣＬ２近傍の上部領域に変位した状態で形成されている。 The light distribution pattern Pa-2 for distant irradiation of the low-beam light distribution pattern PL-2 shown in FIG. 9A is substantially the same as the excessive bright portion Pa' formed in the lower region in the low-beam light distribution pattern PL' shown in FIG. 9B. A shaped light distribution pattern is formed in a displaced upper region near the cutoff lines CL1 and CL2.
　図９Ａに示す遠方照射用配光パターンＰａ－２は、複数の発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部が、第２シェード２７０によって遮光された上で、その反射面２７０ａで下向きに反射して投影レンズ５０を介して灯具前方へ照射されることによって形成された配光パターンである。 In the light distribution pattern for far-field illumination Pa-2 shown in FIG. 9A, part of the direct light directed toward the upper region of the projection lens 50 from the plurality of light-emitting elements 30 is blocked by the second shade 270, and the reflection surface This is a light distribution pattern formed by downward reflection at 270a and irradiation through the projection lens 50 to the front of the lamp.
　図１０Ａは、上記仮想鉛直スクリーン上に形成されるロービーム配光パターンＰＬ－２のＶ－Ｖ線に沿った照度分布ＩＤｖ－２を示す図であり、図１０Ｂは図１０Ａの比較例を示す図である。 FIG. 10A is a diagram showing an illuminance distribution IDv-2 along the VV line of the low-beam light distribution pattern PL-2 formed on the virtual vertical screen, and FIG. 10B is a diagram showing a comparative example of FIG. 10A. is.
　図１０Ａに示すように、ロービーム配光パターンＰＬ－２の照度分布ＩＤｖ－２は、図１０Ｂに示すロービーム配光パターンＰＬ´の照度分布ＩＤｖ´に対して、４～６°Ｄ付近の膨らみがない（図１０Ａ中の破線領域Ａ参照）。また、ロービーム配光パターンＰＬ－２の照度分布ＩＤｖ－２は、１°Ｄ付近で最高照度になった後、下向き角度が大きくなるにつれて照度Ｅｖが急激に低下する際の低下度合が緩和されている（図１０Ａ中の破線領域Ｂ参照）。 As shown in FIG. 10A, the illuminance distribution IDv-2 of the low-beam light distribution pattern PL-2 has a bulge of about 4 to 6°D with respect to the illuminance distribution IDv' of the low-beam light distribution pattern PL' shown in FIG. 10B. (see dashed line area A in FIG. 10A). In addition, the illuminance distribution IDv-2 of the low-beam light distribution pattern PL-2 has a maximum illuminance near 1°D, and then the illuminance Ev sharply decreases as the downward angle increases. (See dashed line area B in FIG. 10A).
　そして、このような照度分布ＩＤｖ－２を有するロービーム配光パターンＰＬ－２が灯具前方路面に形成されることにより、図９Ａに示すように、ロービーム配光パターンＰＬ－２全体の明るさが損なわれることなく遠方視認性が一層向上する。 By forming the low-beam light distribution pattern PL-2 having such an illuminance distribution IDv-2 on the road surface in front of the lamp, as shown in FIG. 9A, the brightness of the entire low-beam light distribution pattern PL-2 is impaired. Distant visibility is further improved without being blocked.
　本変形例の構成を採用することにより、次のような作用効果を得ることができる。 By adopting the configuration of this modified example, the following effects can be obtained.
　すなわち、上述したとおり、第２シェード２７０の反射面２７０ａで下向きに反射した複数の第１発光素子３０からの直射光は、灯具前方路面の遠距離領域を照射する光となる。このため、第２シェード２７０が配置されたことによってロービーム配光パターンＰＬ－２全体の明るさが損なわれてしまわないようにした上で、ロービーム配光パターンＰＬ－２を遠方視認性に優れたものとすることができる。 That is, as described above, the direct light from the plurality of first light emitting elements 30 reflected downward by the reflecting surface 270a of the second shade 270 becomes light that illuminates the long-distance area of the road surface in front of the lamp. Therefore, the arrangement of the second shade 270 does not impair the brightness of the entire low-beam distribution pattern PL-2, and the low-beam distribution pattern PL-2 has excellent long-distance visibility. can be
　次に、第一実施形態の第３変形例について説明する。 Next, a third modified example of the first embodiment will be described.
　図１１は、本変形例に係る車両用灯具の灯具ユニット３２０を示す、図３と同様の図である。 FIG. 11 is a view, similar to FIG. 3, showing a lighting unit 320 of a vehicle lamp according to this modified example.
　図１１に示すように、灯具ユニット３２０の基本的な構成は、図３に示す灯具ユニット２０と同様であるが、複数の第１発光素子３０の配置が灯具ユニット２０と異なる。また、第１リフレクタ３３２の構成および配置が灯具ユニット２０と異なる。また本変形例においては、複数の第１発光素子３０を支持する基板３５６が複数の第２発光素子４０を支持する基板３５８と別体で構成されている点も、灯具ユニット２０と異なる。さらに本変形例においては、２つの基板３５６、３５８を支持するヒートシンク３５４の形状も、灯具ユニット２０と一部異なる。 As shown in FIG. 11, the basic configuration of a lamp unit 320 is similar to that of the lamp unit 20 shown in FIG. Also, the configuration and arrangement of the first reflector 332 are different from those of the lamp unit 20 . In addition, this modification differs from the lamp unit 20 in that the substrate 356 that supports the plurality of first light emitting elements 30 is configured separately from the substrate 358 that supports the plurality of second light emitting elements 40 . Furthermore, in this modified example, the shape of the heat sink 354 that supports the two substrates 356 and 358 is also partly different from that of the lamp unit 20 .
　具体的には、複数の第１発光素子３０は、光軸Ａｘよりも上方側においてその発光面３０ａを灯具正面方向に対して斜め下向きにした状態で配置されている。 Specifically, the plurality of first light-emitting elements 30 are arranged above the optical axis Ax with their light-emitting surfaces 30a facing obliquely downward with respect to the front direction of the lamp.
　また、基板３５８は、上記実施形態の基板５６と同様に、光軸Ａｘと直交する鉛直面に対して後傾した状態で配置されている。また、基板３５６は、光軸Ａｘと直交する鉛直面に対して前傾した状態で配置されている。 Further, the substrate 358 is arranged in a state tilted backward with respect to the vertical plane orthogonal to the optical axis Ax, like the substrate 56 of the above embodiment. Further, the substrate 356 is arranged in a forward tilted state with respect to a vertical plane orthogonal to the optical axis Ax.
　さらに、第１リフレクタ３３２は、その反射面３３２ａが灯具前方斜め下方を向いた状態で配置されており、これにより複数の第１発光素子３０からの出射光を投影レンズ５０へ向けて反射させるように構成されている。 Furthermore, the first reflector 332 is arranged with its reflecting surface 332 a facing obliquely downward in front of the lamp, thereby reflecting the light emitted from the plurality of first light emitting elements 30 toward the projection lens 50 . is configured to
　本変形例においても、複数の第１発光素子３０と投影レンズ５０との間には、複数の第１発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部を遮光する第２シェード３７０が配置されている。第２シェード３７０は、図３に示す灯具ユニット２０の第２シェード７０と同様、板状部材で構成されており、基板３５６と略平行に配置された状態で、その上端部において第１リフレクタ３３２に支持されている。 Also in this modification, a second shade is provided between the plurality of first light emitting elements 30 and the projection lens 50 to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50. 370 are arranged. Like the second shade 70 of the lamp unit 20 shown in FIG. 3, the second shade 370 is composed of a plate-like member, and is arranged substantially parallel to the substrate 356, and has a first reflector 332 at its upper end. supported by
　なお、本変形例においても、第１リフレクタ３３２は、灯具ユニット２０の第１リフレクタ３２と同様の開口部３３２ｂを備えている。 Also in this modified example, the first reflector 332 has an opening 332b similar to that of the first reflector 32 of the lamp unit 20 .
　また、本変形例においても、シェード６０および第２リフレクタ４２の構成については、灯具ユニット２０と同様である。 Also in this modified example, the configurations of the shade 60 and the second reflector 42 are the same as those of the lamp unit 20 .
　本変形例の構成を採用することにより、次のような作用効果を得ることができる。 By adopting the configuration of this modified example, the following effects can be obtained.
　すなわち、本変形例に係る灯具ユニット３２０において、複数の第１発光素子３０からその発光面３０ａの面直方向へ出射する直射光は、投影レンズ５０において上下方向の略中央領域へ向かう光となる。このため、複数の第１発光素子３０から投影レンズ５０の上部領域へ向かう直射光の割合は、図３に示す灯具ユニット２０よりも少なくなる。 That is, in the lamp unit 320 according to this modified example, the direct light emitted from the plurality of first light emitting elements 30 in the direction perpendicular to the light emitting surface 30a becomes light directed toward the substantially central region in the vertical direction of the projection lens 50. . Therefore, the proportion of direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50 is smaller than in the lamp unit 20 shown in FIG.
　したがって、灯具ユニット３２０の構成として、仮に第２シェード３７０が配置されていないとした場合においても、灯具ユニット２０の比較例のロービーム配光パターンＰＬ´（図４（ｂ）参照）程の明るい過剰明部Ｐａ´が下部領域に形成されてしまうことはない。しかしながら、ロービーム配光パターンＰＬ´の下部領域が明るくなってしまう現象は依然として残ってしまう。 Therefore, even if the second shade 370 is not arranged in the configuration of the lamp unit 320, the low-beam light distribution pattern PL' (see FIG. 4B) of the comparative example of the lamp unit 20 is bright. The bright portion Pa' is not formed in the lower region. However, the phenomenon that the lower area of the low-beam light distribution pattern PL' becomes bright still remains.
　これに対し、本変形例に係る灯具ユニット３２０は第２シェード３７０が配置されているので、複数の第１発光素子３０から投影レンズ５０の上部領域へ向かう直射光の一部を遮光することができる。そして、これによりロービーム配光パターンの下部領域が明るくなってしまわないようにすることができる。 On the other hand, since the lamp unit 320 according to the present modification includes the second shade 370, it is possible to block part of the direct light from the plurality of first light emitting elements 30 toward the upper region of the projection lens 50. can. In this way, it is possible to prevent the lower area of the low-beam light distribution pattern from becoming bright.
［第二実施形態］
　次に、第二実施形態について説明する。以下で説明する内容以外は第一実施形態と同様である。図１２は、本願発明の第二実施形態に係る車両用灯具を示す側断面図である。図１３は、図１２のXIII方向矢視図である。 [Second embodiment]
Next, a second embodiment will be described. The contents other than those described below are the same as those of the first embodiment. FIG. 12 is a side sectional view showing a vehicle lamp according to a second embodiment of the present invention. 13 is a view in the direction of arrow XIII in FIG. 12. FIG.
　車両用灯具４１０は、車両の前端部に設けられるヘッドランプであって、ランプボディ４１２と透光カバー４１４とで形成される灯室内に、灯具ユニット４２０が収容された構成を備えている。 A vehicle lamp 410 is a headlamp provided at the front end of a vehicle, and has a configuration in which a lamp unit 420 is accommodated in a lamp chamber formed by a lamp body 412 and a translucent cover 414 .
　図１４は、図１３のXIV－XIV線断面図である。 FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG.
　図１４にも示すように、灯具ユニット４２０は、いわゆるプロジェクタ型の灯具ユニットであって、光源としての複数の第１発光素子４３０および第２発光素子４４０と、第１リフレクタ４３２および第２リフレクタ４４２と、投影レンズ４５０とを備えている。第１発光素子４３０、第２発光素子４４０、第１リフレクタ４３２、第２リフレクタ４４２および投影レンズ４５０の構成は、以下で説明する内容を除き、それぞれ、図１に示す第１発光素子３０、第２発光素子４０、第１リフレクタ３２、第２リフレクタ４２および投影レンズ５０の構成と同様である。 As also shown in FIG. 14, the lamp unit 420 is a so-called projector-type lamp unit, and includes a plurality of first light emitting elements 430 and second light emitting elements 440 as light sources, and a first reflector 432 and a second reflector 442. and a projection lens 450 . The configurations of the first light emitting element 430, the second light emitting element 440, the first reflector 432, the second reflector 442 and the projection lens 450 are the first light emitting element 30 and the second light emitting element 440 shown in FIG. The configuration is the same as that of the second light emitting element 40 , the first reflector 32 , the second reflector 42 and the projection lens 50 .
　図１４に示すように、投影レンズ４５０は、前面４５０ａが凸曲面状に形成された平凸非球面レンズであって、灯具前後方向に延びる光軸Ａｘを有している。投影レンズ４５０の後面４５０ｂには、その上部領域４５０ｂ１に下向き偏向部４５０ｃが形成されている。下向き偏向部４５０ｃの詳細については後述する。 As shown in FIG. 14, the projection lens 450 is a plano-convex aspherical lens having a convex front surface 450a, and has an optical axis Ax extending in the longitudinal direction of the lamp. The rear surface 450b of the projection lens 450 is formed with a downward deflection portion 450c in its upper region 450b1. Details of the downward deflector 450c will be described later.
　投影レンズ４５０は、その外周部においてレンズホルダ４５２に支持されている。レンズホルダ４５２は、ヒートシンク４５４に支持されている。複数の第１発光素子４３０は、いずれも矩形状、具体的には正方形の発光面４３０ａを有する１１個の白色発光ダイオードで構成されており、互いに僅かな間隔をおいて配置されている。一方、複数の第２発光素子４４０は、いずれも矩形状、具体的には発光面３０ａと同一サイズの正方形の発光面４４０ａを有する９個の白色発光ダイオードで構成されており、互いに僅かな間隔をおいて横一列で配置されている。 The projection lens 450 is supported by a lens holder 452 at its outer peripheral portion. The lens holder 452 is supported by a heat sink 454 . Each of the plurality of first light emitting elements 430 is composed of 11 white light emitting diodes each having a rectangular, more specifically, a square light emitting surface 430a, which are arranged at small intervals from each other. On the other hand, each of the plurality of second light emitting elements 440 is composed of nine white light emitting diodes each having a rectangular shape, specifically, a square light emitting surface 440a having the same size as the light emitting surface 30a. are arranged in a horizontal row.
　複数の第１発光素子４３０および第２発光素子４４０は共通の基板４５６に搭載されており、基板４５６はヒートシンク４５４に支持されている。基板４５６は、図３に示す基板５６と同様の構成である。 A plurality of first light emitting elements 430 and second light emitting elements 440 are mounted on a common substrate 456 , and the substrate 456 is supported by a heat sink 454 . The substrate 456 has the same configuration as the substrate 56 shown in FIG.
　第１リフレクタ４３２は、複数の第１発光素子４３０を囲むように形成された反射面４３２ａを有している。第２リフレクタ４４２は、複数の第２発光素子４４０を囲むように形成された反射面４４２ａを有している。反射面４３２ａおよび反射面４４２ａは、それぞれ、図３に示す反射面３２ａおよび反射面４２ａと同様の構成である。 The first reflector 432 has a reflective surface 432a formed so as to surround the plurality of first light emitting elements 430 . The second reflector 442 has a reflecting surface 442 a formed to surround the plurality of second light emitting elements 440 . The reflective surfaces 432a and 442a have the same configurations as the reflective surfaces 32a and 42a shown in FIG. 3, respectively.
　複数の第１発光素子４３０と複数の第２発光素子４４０との間には、複数の第１発光素子４３０からの直射光および第１リフレクタ４３２で反射した複数の第１発光素子４３０からの出射光の一部を遮光してロービーム配光パターンのカットオフラインを形成するためのシェード４６０が配置されている。シェード４６０の前端縁４６０ａは、投影レンズ４５０の後側焦点Ｆの位置において光軸Ａｘと直交する鉛直面に沿って、左右段違いで左右方向に延びるように形成されている。シェード４６０は、図３に示すシェード６０と同様の構成である。 Direct light from the plurality of first light emitting elements 430 and light emitted from the plurality of first light emitting elements 430 reflected by the first reflector 432 are present between the plurality of first light emitting elements 430 and the plurality of second light emitting elements 440 . A shade 460 is provided for blocking part of the incident light and forming a cut-off line for the low-beam light distribution pattern. A front edge 460a of the shade 460 is formed so as to extend in the left-right direction along a vertical plane perpendicular to the optical axis Ax at the position of the rear focal point F of the projection lens 450 in a staggered manner. The shade 460 has the same configuration as the shade 60 shown in FIG.
　図１４に示すように、投影レンズ４５０は、その後面４５０ｂに形成された下向き偏向部４５０ｃにおいて、複数の第１発光素子４３０からの出射光の一部を下向きに偏向させるように構成されている。 As shown in FIG. 14, the projection lens 450 is configured to deflect part of the emitted light from the plurality of first light emitting elements 430 downward at a downward deflection portion 450c formed on the rear surface 450b. .
　下向き偏向部４５０ｃは、投影レンズ４５０の後面４５０ｂにおいて光軸Ａｘから上方側に離れた位置に形成されている。 The downward deflector 450c is formed on the rear surface 450b of the projection lens 450 at a position away from the optical axis Ax.
　具体的には、投影レンズ４５０の後面４５０ｂは、その上部領域４５０ｂ１が他の一般領域に対して灯具前方側にオフセットした状態で形成されている。そして、下向き偏向部４５０ｃは、上部領域４５０ｂ１の下端部において前傾した状態で左右方向に延びるように形成された傾斜面によって構成されている。下向き偏向部４５０ｃの前傾角度によって、複数の第１発光素子４３０からの出射光に対する下向き偏向角度が設定されている。 Specifically, the rear surface 450b of the projection lens 450 is formed such that its upper region 450b1 is offset toward the lamp front side with respect to the other general region. The downward deflecting portion 450c is formed by an inclined surface extending in the left-right direction while being inclined forward at the lower end portion of the upper region 450b1. The downward deflection angle for the light emitted from the plurality of first light emitting elements 430 is set by the forward inclination angle of the downward deflection portion 450c.
　複数の第１発光素子４３０から出射して、投影レンズ４５０の後面４５０ｂに到達した光のうち下向き偏向部４５０ｃに到達した光は、下向きに屈折するようにして投影レンズ４５０に入射し、投影レンズ４５０の前面４５０ａからかなり下向きの光として出射する。 Of the light emitted from the plurality of first light emitting elements 430 and reaching the rear surface 450b of the projection lens 450, the light reaching the downward deflecting portion 450c is refracted downward and enters the projection lens 450, whereupon the light reaches the projection lens 450. It exits the front face 450a of 450 as a fairly downward light.
　なお、図１４において２点鎖線で示す光路は、仮に投影レンズ４５０の後面４５０ｂに下向き偏向部４５０ｃが形成されていないとした場合において投影レンズ４５０に入射した複数の第１発光素子４３０からの出射光の光路である。このように投影レンズ４５０の後面４５０ｂに下向き偏向部４５０ｃが形成されていない場合には、複数の第１発光素子４３０から投影レンズ４５０に入射した光は、投影レンズ４５０の前面４５０ａから下向きの光として出射するが、当該光の下向き角度はさほど大きくはならない。 Note that the optical path indicated by the two-dot chain line in FIG. It is the optical path of incident light. In this way, when the downward deflector 450c is not formed on the rear surface 450b of the projection lens 450, light incident on the projection lens 450 from the plurality of first light emitting elements 430 is directed downward from the front surface 450a of the projection lens 450. However, the downward angle of the light is not so large.
　一方、複数の第２発光素子４４０からの出射光は、その大半が投影レンズ４５０の後面４５０ｂの一般領域に到達するが、斜め上方へ向かう直射光の一部は投影レンズ４５０の下向き偏向部４５０ｃに到達する。そして、下向き偏向部４５０ｃに到達した光は、下向きに屈折するようにして投影レンズ４５０に入射し、投影レンズ４５０の前面４５０ａからやや下向きの光として出射する。 On the other hand, most of the light emitted from the plurality of second light emitting elements 440 reaches the general area of the rear surface 450 b of the projection lens 450 , but part of the direct light directed obliquely upward is directed to the downward deflection portion 450 c of the projection lens 450 . to reach The light reaching the downward deflector 450c enters the projection lens 450 while being refracted downward, and is emitted from the front surface 450a of the projection lens 450 as slightly downward light.
　なお、図１４において２点鎖線で示すように、仮に投影レンズ４５０の後面４５０ｂに下向き偏向部４５０ｃが形成されていないとした場合において投影レンズ４５０に入射した複数の第２発光素子４４０からの直射光は、投影レンズ４５０の前面４５０ａからやや上向きの光として出射する。 As shown by the two-dot chain line in FIG. 14, if the downward deflector 450c were not formed on the rear surface 450b of the projection lens 450, the direct light from the plurality of second light emitting elements 440 incident on the projection lens 450 would be The light is emitted from the front surface 450a of the projection lens 450 as slightly upward light.
　図１５Ａは、車両用灯具４１０の灯具ユニット４２０から灯具前方へ向けて照射される光により、車両前方２５ｍの位置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配光パターンＰＬを透視的に示す図である。 FIG. 15A is a perspective view of a low beam light distribution pattern PL formed on a virtual vertical screen arranged at a position 25 m in front of the vehicle by light emitted forward from the lamp unit 420 of the vehicle lamp 410. FIG. FIG. 4 is a diagram showing;
　図１５Ａに示すように、ロービーム配光パターン２ＰＬは、左配光のロービーム配光パターンであって、ロービーム配光パターン２ＰＬの上端縁に左右段違いのカットオフラインＣＬ１、ＣＬ２を有している。カットオフラインＣＬ１、ＣＬ２は、灯具正面方向の消点であるＨ－Ｖを鉛直方向に通るＶ－Ｖ線を境にして左右段違いで水平方向に延びており、Ｖ－Ｖ線よりも右側の対向車線側部分が下段カットオフラインＣＬ１として形成される。また、Ｖ－Ｖ線よりも左側の自車線側部分が、下段カットオフラインＣＬ１から傾斜部を介して段上がりになった上段カットオフラインＣＬ２として形成されている。 As shown in FIG. 15A, the low-beam light distribution pattern 2PL is a left-handed low-beam light distribution pattern, and has cut-off lines CL1 and CL2 that are uneven on the left and right at the upper edge of the low-beam light distribution pattern 2PL. The cut-off lines CL1 and CL2 extend in the horizontal direction with different levels on the left and right of the line VV passing vertically through the vanishing point HV in the front direction of the lamp. The lane side portion is formed as the lower cutoff line CL1. Further, the portion on the left side of the VV line on the own lane side is formed as an upper cutoff line CL2 rising from the lower cutoff line CL1 via an inclined portion.
　ロービーム配光パターン２ＰＬにおいて、下段カットオフラインＣＬ１とＶ－Ｖ線との交点であるエルボ点Ｅは、Ｈ－Ｖの０．５～０．６°程度下方に位置している。 In the low-beam light distribution pattern 2PL, the elbow point E, which is the intersection of the lower cutoff line CL1 and the line VV, is located approximately 0.5 to 0.6° below HV.
　ロービーム配光パターン２ＰＬは、その下部領域が略均一な明るさで形成されており、かつ、上下幅の広い配光パターンとして形成されている。 The low-beam light distribution pattern 2PL is formed as a light distribution pattern whose lower region has substantially uniform brightness and which has a wide vertical width.
　一方、図１５Ｂは、本実施形態の比較例を示す図であって、仮に、投影レンズ４５０に下向き偏向部４５０ｃが形成されていないとした場合に形成されるロービーム配光パターン２ＰＬ´を示す図である。 On the other hand, FIG. 15B is a diagram showing a comparative example of the present embodiment, and is a diagram showing a low-beam light distribution pattern 2PL' that would be formed if the projection lens 450 did not have the downward deflector 450c. is.
　図１５Ｂに示すように、ロービーム配光パターン２ＰＬ´もロービーム配光パターン２ＰＬと略同様の配光パターンとして形成されるが、ロービーム配光パターン２ＰＬよりも上下幅の狭い配光パターンとして形成される。また、ロービーム配光パターン２ＰＬ´の下部領域が必要以上に明るい過剰明部２Ｐａ´として形成されている。 As shown in FIG. 15B, the low-beam light distribution pattern 2PL' is also formed as a light distribution pattern substantially similar to the low-beam light distribution pattern 2PL, but is formed as a light distribution pattern with a narrower vertical width than the low-beam light distribution pattern 2PL. . Further, the lower region of the low-beam light distribution pattern 2PL' is formed as an excessively bright portion 2Pa' that is brighter than necessary.
　このため、ロービーム配光パターン２ＰＬ´が灯具前方路面に形成されたとき、過剰明部２Ｐａ´が位置する近距離領域が明るくなりすぎて、過剰明部２Ｐａ´とカットオフラインＣＬ１、ＣＬ２との間の遠距離領域が見えにくくなってしまう。そして、これによりロービーム照射時の前方視認性を十分に確保することができなくなってしまう。 Therefore, when the low-beam light distribution pattern 2PL' is formed on the road surface in front of the lamp, the short-distance region where the excessively bright portion 2Pa' is located becomes too bright, and the distance between the excessively bright portion 2Pa' and the cutoff lines CL1 and CL2 becomes too bright. It becomes difficult to see the long-distance area of As a result, sufficient forward visibility cannot be ensured during low-beam irradiation.
　これに対し、ロービーム配光パターン２ＰＬは、その下部領域にこのような過剰明部２Ｐａ´は形成されていない。これは、本実施形態に係る灯具ユニット４２０においては、複数の第１発光素子４３０から投影レンズ４５０の上部領域へ向かう直射光の一部が下向き偏向部４５０ｃによって下向きに偏向した状態で灯具前方へ照射され、これによりロービーム配光パターン２ＰＬの下部領域を形成するための照射光が減少することによるものである。 On the other hand, the low-beam light distribution pattern 2PL does not have such an excessively bright portion 2Pa' in its lower region. This is because, in the lamp unit 420 according to the present embodiment, part of the direct light directed toward the upper region of the projection lens 450 from the plurality of first light emitting elements 430 is deflected downward by the downward deflector 450c, and then travels forward of the lamp. This is because the irradiation light for forming the lower region of the low-beam light distribution pattern 2PL is reduced.
　また、ロービーム配光パターン２ＰＬは、ロービーム配光パターン２ＰＬ´の下端縁が下方側に拡張された配光パターンとして形成されている。これも、複数の第１発光素子４３０から投影レンズ４５０の上部領域へ向かう直射光の一部が下向き偏向部４５０ｃによって下向きに偏向した状態で灯具前方へ照射されることによるものである。 Also, the low-beam light distribution pattern 2PL is formed as a light distribution pattern in which the lower edge of the low-beam light distribution pattern 2PL' is extended downward. This is also because part of the direct light directed toward the upper region of the projection lens 450 from the plurality of first light emitting elements 430 is deflected downward by the downward deflector 450c and radiated forward of the lamp.
　図１６は、灯具ユニット４２０から灯具前方へ向けて照射される光により上記仮想鉛直スクリーン上に形成されるハイビーム配光パターン２ＰＨを示す図である。 FIG. 16 is a diagram showing a high beam light distribution pattern 2PH formed on the virtual vertical screen by light emitted from the lamp unit 420 toward the front of the lamp.
　図１６に示すように、ハイビーム配光パターン２ＰＨは、ロービーム配光パターン２ＰＬに対して付加配光パターン２ＰＡが付加された配光パターンとして形成されている。 As shown in FIG. 16, the high beam light distribution pattern 2PH is formed as a light distribution pattern in which an additional light distribution pattern 2PA is added to the low beam light distribution pattern 2PL.
　上述したように、付加配光パターン２ＰＡは、複数の第２発光素子４４０からの直射光および複数の第２発光素子４４０から出射して第２リフレクタ４４２で反射した光によって、ロービーム配光パターン２ＰＬのカットオフラインＣＬ１、ＣＬ２の上方側に横長の配光パターンとして形成される。また、付加配光パターン２ＰＡの下端縁近傍領域２ＰＡａが、ロービーム配光パターン２ＰＬのカットオフライン近傍領域と重複した状態で形成されている。 As described above, the additional light distribution pattern 2PA is formed by the direct light from the plurality of second light emitting elements 440 and the light emitted from the plurality of second light emitting elements 440 and reflected by the second reflector 442 to form the low beam light distribution pattern 2PL. is formed as a horizontally long light distribution pattern above the cutoff lines CL1 and CL2. In addition, the lower edge vicinity area 2PAa of the additional light distribution pattern 2PA is formed so as to overlap with the cutoff vicinity area of the low-beam light distribution pattern 2PL.
　これは、複数の第２発光素子４４０から斜め上方へ向かう直射光の一部が投影レンズ４５０の下向き偏向部４５０ｃにおいて下向きに屈折するようにして投影レンズ４５０に入射し、投影レンズ４５０の前面４５０ａからやや下向きの光として出射することによるものである。 This is because a part of the direct light emitted obliquely upward from the plurality of second light emitting elements 440 enters the projection lens 450 in such a manner that it is refracted downward at the downward deflection portion 450c of the projection lens 450, and is incident on the front surface 450a of the projection lens 450. This is due to the fact that the light is emitted as slightly downward light from the light source.
　このようにハイビーム配光パターン２ＰＨは、ロービーム配光パターン２ＰＬと付加配光パターン２ＰＡとが部分的に重複した状態で形成されるので、両者の間に隙間が形成されてしまうことはない。 In this way, the high beam distribution pattern 2PH is formed in a state where the low beam distribution pattern 2PL and the additional distribution pattern 2PA partially overlap, so that no gap is formed between them.
　次に本実施形態の作用効果について説明する。 Next, the effects of this embodiment will be described.
　本実施形態に係る車両用灯具４１０の灯具ユニット４２０は、複数の第１発光素子（発光素子）４３０からの出射光を投影レンズ４５０を介して灯具前方へ向けて照射することによりロービーム配光パターン２ＰＬを形成する。また、複数の第１発光素子４３０は、左右方向に並んだ状態でかつ発光面４３０ａを投影レンズ４５０へ向けた状態で配置されている。また、複数の第１発光素子４３０と投影レンズ４５０との間には、ロービーム配光パターン２ＰＬのカットオフラインＣＬ１、ＣＬ２を形成するために複数の第１発光素子４３０からの出射光の一部を遮光するシェード４６０が配置されている。そして、投影レンズ４５０の上部領域には、複数の第１発光素子４３０からの出射光を下向きに偏向させる下向き偏向部４５０ｃが形成されているので、次のような作用効果を得ることができる。 The lamp unit 420 of the vehicle lamp 410 according to the present embodiment emits light emitted from the plurality of first light emitting elements (light emitting elements) 430 through the projection lens 450 toward the front of the lamp, thereby forming a low-beam light distribution pattern. Form 2PL. Also, the plurality of first light emitting elements 430 are arranged side by side in the left-right direction with the light emitting surface 430 a facing the projection lens 450 . Between the plurality of first light emitting elements 430 and the projection lens 450, part of the emitted light from the plurality of first light emitting elements 430 is arranged to form the cutoff lines CL1 and CL2 of the low beam light distribution pattern 2PL. A shade 460 for blocking light is arranged. In addition, since the downward deflection part 450c for downwardly deflecting the light emitted from the plurality of first light emitting elements 430 is formed in the upper region of the projection lens 450, the following effects can be obtained.
　すなわち、ロービーム配光パターン２ＰＬの下部領域が必要以上に明るくなってしまうのは、投影レンズ４５０の上部領域に入射した複数の第１発光素子４３０からの直射光によるものである。そこで、複数の第１発光素子４３０から投影レンズ４５０の上部領域へ向かう直射光の一部を下向き偏向部４５０ｃによって下向きに偏向させた状態で灯具前方へ照射することにより、ロービーム配光パターン２ＰＬの下部領域が明るくなりすぎてしまうのを未然に防止することができる。しかも、下向き偏向部４５０ｃからの出射光によって、ロービーム配光パターン２ＰＬをその下端縁が下方側に拡張された上下幅の広い配光パターンとして形成することができる。 That is, the reason why the lower area of the low-beam light distribution pattern 2PL becomes brighter than necessary is due to the direct light from the plurality of first light emitting elements 430 incident on the upper area of the projection lens 450 . Therefore, direct light from the plurality of first light emitting elements 430 directed to the upper region of the projection lens 450 is partially deflected downward by the downward deflector 450c and is irradiated forward of the lamp, thereby achieving the low-beam light distribution pattern 2PL. It is possible to prevent the lower area from becoming too bright. Moreover, the light emitted from the downward deflector 450c can form the low-beam light distribution pattern 2PL as a light distribution pattern having a wide vertical width with its lower edge extended downward.
　したがって、ロービーム配光パターン２ＰＬが灯具前方路面に形成されたとき、近距離領域が明るくなりすぎて遠距離領域が見えにくくなってしまうのを未然に防止することができ、かつ、灯具前方路面において近距離領域よりもさらに灯具近傍に位置する灯具直前領域まで光照射が行われるようにすることができる。そして、これによりロービーム照射時の前方視認性を十分に確保することができる。 Therefore, when the low-beam light distribution pattern 2PL is formed on the road surface in front of the lamp, it is possible to prevent the short distance area from becoming too bright and the long distance area from becoming difficult to see. It is possible to irradiate an area in front of the lamp, which is positioned closer to the lamp than in the short range area. Thus, it is possible to sufficiently ensure forward visibility during low beam irradiation.
　このように本実施形態によれば、複数の第１発光素子４３０からの出射光を投影レンズ４５０を介して灯具前方へ向けて照射するように構成された車両用灯具４１０において、ロービーム照射時の前方視認性を十分に確保することができる。 As described above, according to the present embodiment, in the vehicle lamp 410 configured to irradiate the light emitted from the plurality of first light emitting elements 430 through the projection lens 450 toward the front of the lamp, Sufficient forward visibility can be ensured.
　また、本実施形態においては、下向き偏向部４５０ｃが、投影レンズ４５０の後面４５０ｂに形成されているので、複数の第１発光素子４３０からの出射光を下向きに偏向させる制御を精度良く行うことができる。 In addition, in the present embodiment, since the downward deflecting portion 450c is formed on the rear surface 450b of the projection lens 450, it is possible to precisely control the downward deflection of the light emitted from the plurality of first light emitting elements 430. can.
　しかも、本実施形態においては、複数の第２発光素子４４０から斜め上方へ向かう直射光の一部が投影レンズ４５０の下向き偏向部４５０ｃに入射することによって、付加配光パターン２ＰＡの下端縁近傍領域２ＰＡａがロービーム配光パターン２ＰＬのカットオフライン近傍領域と重複した状態で形成される。このため、ハイビーム配光パターン２ＰＨを、ロービーム配光パターン２ＰＬと付加配光パターン２ＰＡとが隙間なく繋がった連続的な配光パターンとして形成することができる。 Moreover, in the present embodiment, part of the direct light beams directed obliquely upward from the plurality of second light emitting elements 440 is incident on the downward deflecting portion 450c of the projection lens 450, thereby causing the area near the lower edge of the additional light distribution pattern 2PA. 2PAa is formed so as to overlap with the cutoff vicinity area of the low-beam light distribution pattern 2PL. Therefore, the high beam light distribution pattern 2PH can be formed as a continuous light distribution pattern in which the low beam light distribution pattern 2PL and the additional light distribution pattern 2PA are connected without gaps.
　上記実施形態においては、投影レンズ４５０が平凸非球面レンズで構成されているものとして説明したが、両凸レンズや凸メニスカスレンズ等で構成されたものとすることも可能であり、また、円形以外の外形形状を有する構成とすることも可能である。 In the above embodiment, the projection lens 450 is described as being composed of a plano-convex aspherical lens, but it is also possible to be composed of a biconvex lens, a convex meniscus lens, or the like. It is also possible to have a configuration having an outer shape of .
　上記実施形態においては、灯具ユニット４２０として１１個の第１発光素子４３０と９個の第２発光素子４４０とを備えているものとして説明したが、これ以外の個数の第１発光素子４３０および第２発光素子４４０を備えた構成とすることも可能である。 In the above embodiment, the lamp unit 420 is described as having eleven first light emitting elements 430 and nine second light emitting elements 440. A configuration including two light emitting elements 440 is also possible.
　上記実施形態においては、複数の第１発光素子４３０が左右段違いで配置されているものとして説明したが、これらが横一列で配置された構成とすることも可能である。 In the above embodiment, the plurality of first light emitting elements 430 are arranged in a staggered manner, but it is also possible to arrange them in a horizontal row.
　上記実施形態においては、複数の第１発光素子４３０および第２発光素子４４０の各々の発光面４３０ａ、４４０ａが正方形の外形形状を有しているものとして説明したが、これ以外の外形形状、例えば縦長矩形状や横長矩形状の外形形状等を有する構成とすることも可能である。 In the above embodiment, the light-emitting surfaces 430a and 440a of the plurality of first light-emitting elements 430 and the second light-emitting elements 440 are described as having a square outer shape. It is also possible to adopt a configuration having an outer shape such as a vertically elongated rectangular shape or a horizontally elongated rectangular shape.
　上記実施形態においては、複数の第１発光素子４３０および第２発光素子４４０からの出射光を有効利用するために第１リフレクタ４３２および第２リフレクタ４４２が配置されているものとして説明した。しかしながら、第１リフレクタ４３２および第２リフレクタ４４２のいずれか一方または両方が配置されていない構成とすることも可能である。 In the above embodiment, the first reflector 432 and the second reflector 442 are arranged in order to effectively utilize the light emitted from the plurality of first light emitting elements 430 and second light emitting elements 440 . However, a configuration in which either or both of the first reflector 432 and the second reflector 442 are not arranged is also possible.
　上記実施形態においては、複数の第２発光素子４４０が一斉に点灯するが、複数の第２発光素子４４０が個別に点灯し得る構成とすることも可能である。また、複数の第２発光素子４４０の各々を自車の走行状況に応じて点消灯させるようにすれば、対向車のドライバー等にグレアを与えてしまわない範囲内でできるだけ前方走行路を幅広く照射することが可能となる。 In the above embodiment, the plurality of second light emitting elements 440 are lit all at once, but it is also possible to adopt a configuration in which the plurality of second light emitting elements 440 are individually lit. In addition, if each of the plurality of second light emitting elements 440 is turned on and off according to the driving conditions of the own vehicle, the driving road ahead can be illuminated as widely as possible without giving glare to the driver of the oncoming vehicle. It becomes possible to
　次に、第二実施形態の変形例について説明する。 Next, a modification of the second embodiment will be described.
　まず、第二実施形態の第１変形例について説明する。 First, the first modified example of the second embodiment will be described.
　図１７は、本変形例に係る車両用灯具の灯具ユニット５２０を示す、図１３と同様の図である。 FIG. 17 is a view similar to FIG. 13, showing a lighting unit 520 of a vehicle lighting device according to this modified example.
　図１７に示すように、灯具ユニット５２０の基本的な構成は、図１２に示す灯具ユニット４２０と同様であるが、投影レンズ５５０の構成が灯具ユニット４２０と一部異なる。 As shown in FIG. 17, the basic configuration of the lamp unit 520 is similar to that of the lamp unit 420 shown in FIG.
　すなわち本変形例においても、投影レンズ５５０は、前面５５０ａが凸曲面状に形成された平凸非球面レンズで構成されており、投影レンズ５５０の後面５５０ｂの上部領域５５０ｂ１には下向き偏向部５５０ｃが形成されている。下向き偏向部５５０ｃが複数の拡散レンズ素子５５０ｓで構成されている点で灯具ユニット４２０と異なる。 That is, in this modification as well, the projection lens 550 is composed of a plano-convex aspherical lens having a convex front surface 550a, and a downward deflector 550c is provided in the upper region 550b1 of the rear surface 550b of the projection lens 550. formed. It differs from the lamp unit 420 in that the downward deflector 550c is composed of a plurality of diffuser lens elements 550s.
　複数の拡散レンズ素子５５０ｓは、縦縞状に形成されており、複数の第１発光素子４３０からの出射光を左右方向に拡散させるように構成されている。 The plurality of diffusing lens elements 550s are formed in a vertical striped pattern, and are configured to diffuse the light emitted from the plurality of first light emitting elements 430 in the horizontal direction.
　図１８Ａは、灯具ユニット５２０から灯具前方へ向けて照射される光により、上記仮想鉛直スクリーン上に形成されるロービーム配光パターン２ＰＬ－１を透視的に示す図である。 FIG. 18A is a view perspectively showing a low-beam light distribution pattern 2PL-1 formed on the virtual vertical screen by light emitted from the lamp unit 520 toward the front of the lamp.
　図１８Ａに示すように、ロービーム配光パターン２ＰＬ－１は、図１８Ａ中２点鎖線で示すロービーム配光パターン２ＰＬに比して、ロービーム配光パターン２ＰＬ－１の下部領域の左右両側への拡がりが大きい配光パターンとして形成されている。これは、下向き偏向部５５０ｃが複数の拡散レンズ素子５５０ｓで構成されていることによるものである。 As shown in FIG. 18A, the low-beam light distribution pattern 2PL-1 spreads to both the left and right sides of the lower region of the low-beam light distribution pattern 2PL-1 compared to the low-beam light distribution pattern 2PL indicated by the chain double-dashed line in FIG. 18A. is formed as a large light distribution pattern. This is because the downward deflector 550c is composed of a plurality of diffuser lens elements 550s.
　図１８Ｂは、灯具ユニット５２０から灯具前方へ向けて照射される光により、上記仮想鉛直スクリーン上に形成されるハイビーム配光パターン２ＰＨ－１を透視的に示す図である。 FIG. 18B is a perspective view showing a high beam light distribution pattern 2PH-1 formed on the virtual vertical screen by light emitted from the lamp unit 520 toward the front of the lamp.
　図１８Ｂに示すように、ハイビーム配光パターン２ＰＨ－１は、ロービーム配光パターン２ＰＬ－１に対して付加配光パターン２ＰＡ－１が付加された配光パターンとして形成されている。 As shown in FIG. 18B, the high beam light distribution pattern 2PH-1 is formed as a light distribution pattern in which the additional light distribution pattern 2PA-1 is added to the low beam light distribution pattern 2PL-1.
　付加配光パターン２ＰＡ－１は、図１８Ｂ中２点鎖線で示す付加配光パターン２ＰＡと同様、付加配光パターン２ＰＡ－１の下端縁近傍領域２ＰＡ－１ａがロービーム配光パターン２ＰＬ－１のカットオフライン近傍領域と重複した配光パターンとして形成される。付加配光パターン２ＰＡ－１は、付加配光パターン２ＰＡに比して下端縁近傍領域２ＰＡ－１ａの左右両側への拡がりが大きい配光パターンとして形成されている。これも、下向き偏向部５５０ｃが複数の拡散レンズ素子５５０ｓで構成されていることによるものである。 The additional light distribution pattern 2PA-1 is similar to the additional light distribution pattern 2PA indicated by the chain double-dashed line in FIG. It is formed as a light distribution pattern that overlaps with the off-line vicinity area. The additional light distribution pattern 2PA-1 is formed as a light distribution pattern that expands to both the left and right sides of the lower edge vicinity region 2PA-1a more than the additional light distribution pattern 2PA. This is also due to the fact that the downward deflector 550c is composed of a plurality of diffusing lens elements 550s.
　本変形例の構成を採用した場合においても、図１２に示す灯具ユニット４２０と同様の作用効果を得ることができる。 Even when the configuration of this modified example is adopted, the same effects as those of the lamp unit 420 shown in FIG. 12 can be obtained.
　しかも、本変形例の構成を採用することにより、灯具前方路面の灯具直前領域を幅広く均一に照射する配光パターンとしてロービーム配光パターン２ＰＬ－１を形成することができる。 Moreover, by adopting the configuration of this modified example, it is possible to form the low-beam light distribution pattern 2PL-1 as a light distribution pattern that widely and uniformly illuminates the area in front of the lamp on the road surface in front of the lamp.
　また、本変形例の構成を採用することにより、付加配光パターン２ＰＡ－１の下部領域がより広範囲にわたってロービーム配光パターン２ＰＬ－１のカットオフライン近傍領域と重複することとなる。このため、ハイビーム配光パターン２ＰＨ－１を、ロービーム配光パターン２ＰＬ－１と付加配光パターン２ＰＡ－１とがより広範囲にわたって隙間なく繋がった連続的な配光パターンとして形成することができる。 In addition, by adopting the configuration of this modified example, the lower region of the additional light distribution pattern 2PA-1 overlaps the region near the cutoff line of the low-beam light distribution pattern 2PL-1 over a wider range. Therefore, the high beam light distribution pattern 2PH-1 can be formed as a continuous light distribution pattern in which the low beam light distribution pattern 2PL-1 and the additional light distribution pattern 2PA-1 are connected over a wider range without gaps.
　次に、第二実施形態の第２変形例について説明する。 Next, a second modified example of the second embodiment will be described.
　図１９は、本変形例に係る車両用灯具の灯具ユニット６２０を示す、図１４と同様の図である。 FIG. 19 is a view, similar to FIG. 14, showing a lighting unit 620 of a vehicle lamp according to this modified example.
　図１９に示すように、灯具ユニット６２０の基本的な構成は、図１２に示す灯具ユニット４２０と同様であるが、投影レンズ６５０の構成が灯具ユニット４２０と一部異なる。 As shown in FIG. 19, the basic configuration of the lamp unit 620 is similar to that of the lamp unit 420 shown in FIG.
　すなわち本変形例においても、投影レンズ６５０は、前面６５０ａが凸曲面状に形成された平凸非球面レンズで構成されており、投影レンズ６５０の後面６５０ｂの上部領域６５０ｂ１には下向き偏向部６５０ｃが形成されている。下向き偏向部６５０ｃの下方側に隣接する領域に、複数の第１発光素子４３０からの直射光を上向きに偏向させる上向き偏向部６５０ｄが形成されている点で、灯具ユニット６２０は灯具ユニット４２０と異なる。 That is, in this modification as well, the projection lens 650 is composed of a plano-convex aspherical lens having a convex front surface 650a, and a downward deflector 650c is provided in the upper region 650b1 of the rear surface 650b of the projection lens 650. formed. The lamp unit 620 differs from the lamp unit 420 in that an upward deflection portion 650d that deflects the direct light from the plurality of first light emitting elements 430 upward is formed in a region adjacent to the lower side of the downward deflection portion 650c. .
　上向き偏向部６５０ｄは、下向き偏向部６５０ｃの下端縁から後傾した状態で左右方向に延びるように形成された傾斜面で構成されており、上向き偏向部６５０ｄの下端縁において後面６５０ｂの一般領域に接続されている。上向き偏向部６５０ｄの後傾角度によって、複数の第１発光素子４３０からの出射光に対する上向き偏向角度が設定されている。 The upward deflection portion 650d is formed of an inclined surface extending in the left-right direction while being inclined backward from the lower edge of the downward deflection portion 650c. It is connected. The upward deflection angle for the light emitted from the plurality of first light emitting elements 430 is set by the backward inclination angle of the upward deflection portion 650d.
　複数の第１発光素子４３０および第２発光素子４４０から出射して、投影レンズ６５０の後面６５０ｂに到達した光のうち下向き偏向部６５０ｃに到達した光の光路については、灯具ユニット４２０と同様である。 Of the light emitted from the plurality of first light emitting elements 430 and the second light emitting elements 440 and reaching the rear surface 650b of the projection lens 650, the optical path of the light reaching the downward deflecting portion 650c is the same as that of the lamp unit 420. .
　一方、複数の第１発光素子４３０および第２発光素子４４０から出射して、投影レンズ６５０の後面６５０ｂに到達した光のうち上向き偏向部６５０ｄに到達した光の光路は、仮に上向き偏向部６５０ｄが形成されていないとした場合の光路（図１９において２点鎖線で示す光路）よりも上向きの光として投影レンズ６５０の前面６５０ａから出射する。 On the other hand, among the light emitted from the plurality of first light emitting elements 430 and the second light emitting elements 440 and reaching the rear surface 650b of the projection lens 650, the optical path of the light reaching the upward deflection section 650d is assumed to be It is emitted from the front surface 650a of the projection lens 650 as upward light from the optical path (the optical path indicated by the two-dot chain line in FIG. 19) if it is not formed.
　図２０Ａは、灯具ユニット６２０から灯具前方へ向けて照射される光により、上記仮想鉛直スクリーン上に形成されるロービーム配光パターン２ＰＬ－２を透視的に示す図である。 FIG. 20A is a view perspectively showing a low beam light distribution pattern 2PL-2 formed on the virtual vertical screen by light emitted from the lamp unit 620 toward the front of the lamp.
　図２０Ａに示すように、ロービーム配光パターン２ＰＬ－２は、その上部領域に横長明部２Ｐｂを有する配光パターンとして形成されている。横長明部２Ｐｂは、複数の第１発光素子４３０から出射して上向き偏向部６５０ｄから投影レンズ６５０に入射した光が、投影レンズ６５０の前面６５０ａから上向きの光として出射することによって形成される。 As shown in FIG. 20A, the low-beam light distribution pattern 2PL-2 is formed as a light distribution pattern having a horizontally long bright portion 2Pb in its upper region. The horizontally long bright portion 2Pb is formed by the light emitted from the plurality of first light emitting elements 430 and incident on the projection lens 650 through the upward deflection portion 650d, and then emitted from the front surface 650a of the projection lens 650 as upward light.
　このような横長明部２Ｐｂを有するロービーム配光パターン２ＰＬ－２は、図１５Ａに示すロービーム配光パターン２ＰＬに比して遠方視認性に優れた配光パターンである。 The low-beam light distribution pattern 2PL-2 having such a horizontally long bright portion 2Pb is a light distribution pattern with superior long-distance visibility compared to the low-beam light distribution pattern 2PL shown in FIG. 15A.
　図２０Ｂは、灯具ユニット６２０から灯具前方へ向けて照射される光により、上記仮想鉛直スクリーン上に形成されるハイビーム配光パターン２ＰＨ－２を透視的に示す図である。 FIG. 20B is a view perspectively showing a high beam light distribution pattern 2PH-2 formed on the virtual vertical screen by light emitted from the lamp unit 620 toward the front of the lamp.
　図２０Ｂに示すように、ハイビーム配光パターン２ＰＨ－２は、ロービーム配光パターン２ＰＬ－２に対して付加配光パターン２ＰＡ－２が付加された配光パターンとして形成されている。 As shown in FIG. 20B, the high beam light distribution pattern 2PH-2 is formed as a light distribution pattern in which the additional light distribution pattern 2PA-2 is added to the low beam light distribution pattern 2PL-2.
　付加配光パターン２ＰＡ－２は、図２０Ｂ中２点鎖線で示す付加配光パターン２ＰＡと同様に、付加配光パターン２ＰＡ－２の下端縁近傍領域２ＰＡ－２ａがロービーム配光パターン２ＰＬ－２のカットオフライン近傍領域と重複した配光パターンとして形成される。付加配光パターン２ＰＡ－２は、付加配光パターン２ＰＡに比して上部領域が上方側に拡張された配光パターンとして形成されている。これは、複数の第２発光素子４４０から出射して上向き偏向部６５０ｄから投影レンズ６５０に入射した光が、投影レンズ６５０の前面６５０ａから上向きの光として出射することによるものである。 In the additional light distribution pattern 2PA-2, similarly to the additional light distribution pattern 2PA indicated by the two-dot chain line in FIG. It is formed as a light distribution pattern that overlaps with the cutoff vicinity area. The additional light distribution pattern 2PA-2 is formed as a light distribution pattern whose upper region is expanded upward compared to the additional light distribution pattern 2PA. This is because the light emitted from the plurality of second light emitting elements 440 and incident on the projection lens 650 through the upward deflector 650d is emitted from the front surface 650a of the projection lens 650 as upward light.
　本変形例の構成を採用した場合においても、図１２に示す灯具ユニット４２０と同様の作用効果を得ることができる。 Even when the configuration of this modified example is adopted, the same effects as those of the lamp unit 420 shown in FIG. 12 can be obtained.
　また、本変形例においては、複数の第１発光素子４３０から投影レンズ６５０の上部領域へ向かう直射光の一部が上向き偏向部６５０ｄによって上向きに偏向した状態で灯具前方へ照射される。このため、ロービーム配光パターン２ＰＬ－２として、その下部領域の明るさを抑制する効果を高めることができる。 In addition, in this modification, part of the direct light from the plurality of first light emitting elements 430 toward the upper region of the projection lens 650 is deflected upward by the upward deflector 650d and is emitted forward of the lamp. Therefore, the low-beam light distribution pattern 2PL-2 can enhance the effect of suppressing the brightness of the lower area.
　しかも、上向き偏向角度を比較的小さい適当な値に設定すれば、上向き偏向部６５０ｄからの出射光を、カットオフラインよりも上方側へ照射されるグレア光としてしまうことなく、灯具前方路面の遠距離領域を照射する光として活用することができる。そして、これによりロービーム配光パターン２ＰＬ－２を遠方視認性に優れたものとすることができる。本変形例の構成を採用することにより、ロービーム配光パターン２ＰＬ－２を遠方視認性に優れた配光パターンとして形成することができる。 Moreover, if the upward deflection angle is set to a relatively small appropriate value, the light emitted from the upward deflection portion 650d will not become glare light emitted upward from the cutoff line, and the distance from the road surface in front of the lamp will be reduced. It can be utilized as light for illuminating the area. Thus, the low-beam light distribution pattern 2PL-2 can be made excellent in long-distance visibility. By adopting the configuration of this modified example, the low-beam light distribution pattern 2PL-2 can be formed as a light distribution pattern with excellent long-distance visibility.
　次に、第二実施形態の第３変形例について説明する。 Next, a third modified example of the second embodiment will be described.
　図２１は、本変形例に係る車両用灯具の灯具ユニット７２０を示す、図１３と同様の図である。図２２は、本変形例に係る車両用灯具の灯具ユニット７２０を示す、図１４と同様の図である。 FIG. 21 is a view, similar to FIG. 13, showing a lighting unit 720 of a vehicle lamp according to this modified example. FIG. 22 is a view, similar to FIG. 14, showing a lamp unit 720 of a vehicle lamp according to this modified example.
　図２１および図２２に示すように、灯具ユニット７２０の基本的な構成は、図１２に示す灯具ユニット４２０と同様であるが、投影レンズ７５０の構成が灯具ユニット４２０と一部異なる。 As shown in FIGS. 21 and 22, the basic configuration of the lamp unit 720 is similar to that of the lamp unit 420 shown in FIG.
　すなわち本変形例においても、投影レンズ７５０は、前面７５０ａが凸曲面状に形成された平凸非球面レンズで構成されており、投影レンズ７５０の後面７５０ｂの上部領域７５０ｂ１には下向き偏向部７５０ｃが形成されている。しかしながら、投影レンズ７５０は、灯具正面視において横長の外形形状を有している点で灯具ユニット４２０の投影レンズ４５０と異なる。また、これに伴ってレンズホルダ７５２およびヒートシンク７５４の構成も灯具ユニット４２０と一部異なる。 That is, in this modification as well, the projection lens 750 is composed of a plano-convex aspherical lens having a convex front surface 750a, and a downward deflector 750c is provided in the upper region 750b1 of the rear surface 750b of the projection lens 750. formed. However, the projection lens 750 differs from the projection lens 450 of the lamp unit 420 in that it has a horizontally long outer shape when viewed from the front of the lamp. Also, along with this, the configurations of the lens holder 752 and the heat sink 754 are partially different from those of the lamp unit 420 .
　具体的には、投影レンズ７５０は、図１２に示す投影レンズ４５０の上部および下部を水平方向に切り落としたような外形形状を有している。また、レンズホルダ７５２は、投影レンズ７５０の外形形状に応じた形状を有しており、ヒートシンク７５４は、レンズホルダ７５２の外形形状に応じた形状を有している。 Specifically, the projection lens 750 has an outer shape obtained by cutting off the upper and lower portions of the projection lens 450 shown in FIG. 12 in the horizontal direction. The lens holder 752 has a shape corresponding to the outer shape of the projection lens 750 , and the heat sink 754 has a shape corresponding to the outer shape of the lens holder 752 .
　本変形例の構成を採用した場合においても、図１２に示す灯具ユニット４２０と同様の作用効果を得ることができる。 Even when the configuration of this modified example is adopted, the same effects as those of the lamp unit 420 shown in FIG. 12 can be obtained.
　また、本変形例の投影レンズ７５０のように、灯具正面視において横長の外形形状を有している場合には、投影レンズ７５０からの出射光の最大下向き角度が制限されてしまう。このため、灯具前方路面の灯具直前領域の明るさを十分に確保することが困難になるので、下向き偏向部７５０ｃの形成により、ロービーム照射時に灯具前方路面の灯具直前領域まで光照射が行われる構成とすることが特に効果的である。 In addition, if the projection lens 750 of this modified example has a horizontally long outer shape when viewed from the front of the lamp, the maximum downward angle of the emitted light from the projection lens 750 is limited. For this reason, it is difficult to ensure sufficient brightness in the region of the road surface in front of the lamp in front of the lamp. It is particularly effective to
　なお、第一実施形態およびその変形例、ならびに第二実施形態およびその変形例において諸元として示した数値は一例にすぎず、これらを適宜異なる値に設定してもよいことはもちろんである。 It should be noted that the numerical values shown as specifications in the first embodiment and its modification, and the second embodiment and its modification are merely examples, and it goes without saying that these may be set to different values as appropriate.
　また、本願発明は、上記第一実施形態およびその変形例、ならびに第二実施形態およびその変形例に記載された構成に限定されるものではなく、これ以外の種々の変更を加えた構成が採用可能である。 In addition, the present invention is not limited to the configurations described in the first embodiment and its modifications, and the second embodiment and its modifications, and adopts configurations with various other modifications. It is possible.
　本出願は、２０２１年９月２１日出願の日本特許出願２０２１－１５３００４号及び２０２１年１１月２５日出願の日本特許出願２０２１－１９０９２９号に基づくものであり、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 No. 2021-153004 filed on September 21, 2021 and Japanese Patent Application No. 2021-190929 filed on November 25, 2021, the contents of which are incorporated herein by reference. .

Claims (10)

  1. 　複数の発光素子と投影レンズとを備え、上記複数の発光素子からの出射光を上記投影レンズを介して灯具前方へ向けて照射することによりロービーム配光パターンを形成するように構成された車両用灯具であって、
    　上記複数の発光素子は、左右方向に並んだ状態でかつ発光面を上記投影レンズへ向けた状態で配置されており、
    　上記複数の発光素子と上記投影レンズとの間に、上記ロービーム配光パターンのカットオフラインを形成するために上記複数の発光素子からの出射光の一部を遮光するシェードが配置されており、
    　上記複数の発光素子と上記投影レンズとの間に、上記複数の発光素子から上記投影レンズの上部領域へ向かう直射光の一部を遮光する第２シェードが配置されている、車両用灯具。     For a vehicle, comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens. is a lamp,
    The plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens,
    A shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the low beam light distribution pattern,
    A vehicle lamp, wherein a second shade is arranged between the plurality of light emitting elements and the projection lens to block part of direct light from the plurality of light emitting elements toward an upper region of the projection lens.
  2. 　上記第２シェードは、上記複数の発光素子のうち左右方向の両端部に位置する発光素子よりも左右方向の中央部に位置する発光素子からの直射光に対する遮光量が大きくなる位置に配置されている、請求項１に記載の車両用灯具。 The second shade is arranged at a position where the light-emitting element positioned at the center in the left-right direction out of the plurality of light-emitting elements blocks more light from direct light than the light-emitting elements positioned at both ends in the left-right direction. 2. The vehicular lamp according to claim 1, wherein
  3. 　上記第２シェードは、上記複数の発光素子からの直射光を下向きに反射させて上記投影レンズへ入射させるように形成された反射面を備えている、請求項１または２に記載の車両用灯具。 3. The vehicle lamp according to claim 1, wherein the second shade has a reflecting surface formed to reflect downward the direct light from the plurality of light emitting elements and enter the light into the projection lens. .
  4. 　上記複数の発光素子からの出射光を上記投影レンズへ向けて反射させるリフレクタを備えており、
    　上記第２シェードは、上記リフレクタと一体的に形成されている、請求項１～３のいずれか一項に記載の車両用灯具。     A reflector is provided for reflecting light emitted from the plurality of light emitting elements toward the projection lens,
    The vehicle lamp according to any one of claims 1 to 3, wherein the second shade is formed integrally with the reflector.
  5. 　上記リフレクタは、上記シェードと一体的に形成されている、請求項４に記載の車両用灯具。 The vehicle lamp according to claim 4, wherein the reflector is integrally formed with the shade.
  6. 　複数の発光素子と投影レンズとを備え、上記複数の発光素子からの出射光を上記投影レンズを介して灯具前方へ向けて照射することによりロービーム配光パターンを形成するように構成された車両用灯具であって、
    　上記複数の発光素子は、左右方向に並んだ状態でかつ発光面を上記投影レンズへ向けた状態で配置されており、
    　上記複数の発光素子と上記投影レンズとの間に、上記ロービーム配光パターンのカットオフラインを形成するために上記複数の発光素子からの出射光の一部を遮光するシェードが配置されており、
    　上記投影レンズの上部領域に、上記複数の発光素子からの直射光を下向きに偏向させる下向き偏向部が形成されている、車両用灯具。     For a vehicle, comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens. is a lamp,
    The plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens,
    A shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the low beam light distribution pattern,
    A vehicle lamp, wherein a downward deflection portion that deflects direct light from the plurality of light emitting elements downward is formed in an upper region of the projection lens.
  7. 　上記下向き偏向部は、上記投影レンズの後面に形成されている、請求項６に記載の車両用灯具。 The vehicle lamp according to claim 6, wherein the downward deflection portion is formed on the rear surface of the projection lens.
  8. 　上記投影レンズは、灯具正面視において横長の外形形状を有している、請求項６または７に記載の車両用灯具。 The vehicular lamp according to claim 6 or 7, wherein the projection lens has an oblong outer shape when viewed from the front of the lamp.
  9. 　上記下向き偏向部は、上記複数の発光素子からの出射光を左右方向に拡散させるように構成されている、請求項６～８のいずれか一項に記載の車両用灯具。 The vehicle lamp according to any one of claims 6 to 8, wherein the downward deflection section is configured to diffuse the light emitted from the plurality of light emitting elements in the left-right direction.
  10. 　上記投影レンズの上部領域において上記下向き偏向部の下方側に隣接する領域に、上記複数の発光素子からの直射光を上向きに偏向させる上向き偏向部が形成されている、請求項６～９のいずれか一項に記載の車両用灯具。 10. The upward deflecting portion for deflecting the direct light emitted from the plurality of light emitting elements upward is formed in a region adjacent to the downward side of the downward deflecting portion in the upper region of the projection lens. 1. The vehicle lamp according to 1.
PCT/JP2022/034387 2021-09-21 2022-09-14 Vehicular lamp WO2023048043A1 (en)

Applications Claiming Priority (4)

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JP2021-153004 2021-09-21
JP2021153004A JP2023044895A (en) 2021-09-21 2021-09-21 Lamp for vehicle
JP2021-190929 2021-11-25
JP2021190929A JP2023077596A (en) 2021-11-25 2021-11-25 Vehicular lighting fixture

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WO2023048043A1 true WO2023048043A1 (en) 2023-03-30

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005011608A (en) * 2003-06-18 2005-01-13 Koito Mfg Co Ltd Vehicular headlight
JP2019036564A (en) * 2018-12-05 2019-03-07 株式会社小糸製作所 Vehicular lighting fixture
JP2019207774A (en) * 2018-05-28 2019-12-05 株式会社小糸製作所 Vehicular lighting fixture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005011608A (en) * 2003-06-18 2005-01-13 Koito Mfg Co Ltd Vehicular headlight
JP2019207774A (en) * 2018-05-28 2019-12-05 株式会社小糸製作所 Vehicular lighting fixture
JP2019036564A (en) * 2018-12-05 2019-03-07 株式会社小糸製作所 Vehicular lighting fixture

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