WO2021193588A1 - 車両用灯具 - Google Patents

車両用灯具 Download PDF

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Publication number
WO2021193588A1
WO2021193588A1 PCT/JP2021/011862 JP2021011862W WO2021193588A1 WO 2021193588 A1 WO2021193588 A1 WO 2021193588A1 JP 2021011862 W JP2021011862 W JP 2021011862W WO 2021193588 A1 WO2021193588 A1 WO 2021193588A1
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WO
WIPO (PCT)
Prior art keywords
light
lens body
incident
light source
lens
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/011862
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
将太 西村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stanley Electric Co Ltd
Original Assignee
Stanley Electric Co Ltd
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
Application filed by Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to CN202180016276.7A priority Critical patent/CN115151756B/zh
Priority to US17/911,427 priority patent/US11713858B2/en
Priority to EP21776071.9A priority patent/EP4130569B1/en
Publication of WO2021193588A1 publication Critical patent/WO2021193588A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • 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
    • F21S41/24—Light guides
    • 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
    • F21S41/27—Thick 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
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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
    • 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
    • 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.
  • This application claims priority based on Japanese Patent Application No. 2020-052029 filed on March 24, 2020, the contents of which are incorporated herein by reference.
  • vehicle lighting fixtures such as vehicle headlamps include a light source, a reflector that reflects the light emitted from the light source in the direction of travel of the vehicle, and a part of the light reflected by the reflector. It is equipped with a shade that blocks (cuts) light and a projection lens that projects light partially cut by the shade toward the traveling direction of the vehicle.
  • a passing beam (low beam)
  • a light source image defined by the front end of the shade is inverted and projected by a projection lens to form a low beam light distribution pattern including a cut-off line at the upper end.
  • a high beam light distribution pattern is formed above the low beam light distribution pattern.
  • aspects of the present invention provide a vehicle lamp that makes it possible to obtain a good light distribution pattern.
  • a first light source that emits first light and A second light source that is arranged adjacent to the first light source and emits a second light in the same direction as the first light.
  • a projection lens that projects the first light and the second light in the same direction as each other is provided.
  • the projection lens includes a first lens body including a first incident portion located on a side facing the first light source and an emitting portion located on a side opposite to the first incident portion, and the projection lens. It has a second lens body including a second incident portion located on the side facing the second light source, and has a second lens body.
  • the refractive index of the second lens body is smaller than the refractive index of the first lens body.
  • the first incident portion and the second incident portion It has a structure in which the first lens body and the second lens body are abutted with each other with a second boundary surface provided between them.
  • the first light reflected by the second interface is the first lens body from the exit portion.
  • the emitting unit is a lens surface that collects the first light and the second light in the direction in which the boundary line extends and in the direction in which the first light source and the second light source are arranged.
  • the vehicle lighting equipment according to the above [1].
  • the projection lens has a third lens body located on the side facing the emitting portion.
  • the emitting portion has a lens surface that collects the first light and the second light in the direction in which the boundary line extends.
  • the third lens body has a lens surface that collects the first light and the second light emitted from the emitting portion in the direction in which the first light source and the second light source are arranged. 1]
  • FIG. 1st Embodiment of this invention It is a perspective view which shows the structure of the lamp for vehicle which concerns on 1st Embodiment of this invention. It is an exploded perspective view which shows the structure of the vehicle lamp shown in FIG. It is a vertical cross-sectional view which shows the structure of the vehicle lamp shown in FIG. It is a horizontal cross-sectional view which shows the structure of the 1st incident part side of the vehicle lamp shown in FIG. It is a horizontal cross-sectional view which shows the structure of the 2nd incident part side of the vehicle lamp shown in FIG. It is a perspective view which shows the structure of the lamp for vehicle which concerns on 2nd Embodiment of this invention. It is an exploded perspective view which shows the structure of the vehicle lamp shown in FIG.
  • the XYZ Cartesian coordinate system is set, the X-axis direction is the front-rear direction (length direction) of the vehicle lighting equipment, the Y-axis direction is the left-right direction (width direction) of the vehicle lighting equipment, and the Z-axis direction. Are shown as the vertical direction (height direction) of the vehicle lighting equipment.
  • FIG. 1 is a perspective view showing the configuration of the vehicle lamp 1A.
  • FIG. 2 is an exploded perspective view showing the configuration of the vehicle lamp 1A.
  • FIG. 3 is a vertical cross-sectional view showing the configuration of the vehicle lamp 1A.
  • FIG. 4 is a horizontal cross-sectional view showing the configuration of the vehicle lamp 1A on the first incident portion 7 side.
  • FIG. 5 is a horizontal cross-sectional view showing the configuration of the vehicle lamp 1A on the second incident portion 10 side.
  • the vehicle lighting fixture 1A of the present embodiment is an application of the present invention to a vehicle headlamp, and is a passing beam (low beam) that forms a low beam light distribution pattern including a cut-off line at the upper end.
  • the traveling beam (high beam) that forms the high beam light distribution pattern on the upper side of the low beam light distribution pattern is irradiated in a switchable manner toward the front (+ X-axis direction) of the vehicle, respectively.
  • the vehicle lamp 1A has a first light source 2 that emits a first light L1 and a second light source 2 inside a lamp body (not shown).
  • a second light source 3 that emits the light L2 and a projection lens 4 that projects the first light L1 and the second light L2 are roughly provided.
  • the lamp body is composed of a housing with an open front surface and a transparent lens cover that covers the opening of this housing. Further, the shape of the lamp body can be appropriately changed according to the design of the vehicle and the like.
  • the first light source 2 and the second light source 3 are composed of, for example, a light emitting diode (LED) that emits white light. Further, as the LED, a high output (high brightness) type LED (for example, SMD LED) for vehicle lighting can be used. As for the first light source 2 and the second light source 3, a light emitting element such as a laser diode (LD) can be used in addition to the above-mentioned LED.
  • LD laser diode
  • the first light source 2 and the second light source 3 are arranged side by side in the vertical direction (vertical direction) of the vehicle lighting equipment 1A in a state of being adjacent to each other.
  • one LED constituting the first light source 2 is arranged on the upper side
  • one LED constituting the second light source 3 is arranged on the lower side.
  • the first light source 2 and the second light source 3 are mounted on one surface (front surface in this embodiment) of a circuit board 5 provided with a drive circuit for driving each LED.
  • the first light source 2 and the second light source 3 radiate the first light L1 and the second light L2 toward the front (+ X-axis side). That is, the first light source 2 and the second light source 3 are provided on the same surface of the same circuit board 5, and emit the first light L1 and the second light L2 radially in the same direction as each other. It is configured to do.
  • a heat sink 6 that dissipates heat generated by the first light source 2 and the second light source 3 is attached to the other surface (rear surface in this embodiment) side of the circuit board 5.
  • the heat sink 6 is made of an extruded body made of a metal such as aluminum having high thermal conductivity.
  • the heat sink 6 has a base portion 6a that comes into contact with the circuit board 5, and a plurality of fin portions 6b that enhance the heat dissipation of heat transferred from the circuit board 5 to the base portion 6a.
  • the LEDs constituting the first light source 2 and the second light source 3 described above and the drive circuit for driving the LEDs are mounted on the circuit board 5, but the LEDs
  • the mounting board on which the LED is mounted and the circuit board provided with the drive circuit for driving the LED are separately arranged, and the mounting board and the circuit board are electrically connected via a wiring cord called a harness.
  • the drive circuit may be protected from the heat generated by the LED.
  • the projection lens 4 is a first lens body 9 including a first incident portion 7 located on the side facing the first light source 2 and an emitting portion 8 located on the side opposite to the first incident portion 7. And a second lens body 11 including a second incident portion 10 located on the side facing the second light source 3.
  • the refractive index of the second lens body 11 is smaller than the refractive index of the first lens body 9.
  • the first lens body 9 is made of polycarbonate resin (PC)
  • the second lens body 11 is made of acrylic resin (PMMA).
  • the combination of materials having different refractive indexes between the first lens body 9 and the second lens body 11 is not necessarily limited to such a combination, and can be changed as appropriate. Further, not only the above-mentioned resin having light transmittance but also glass can be used.
  • the first lens body 9 and the second lens body 11 are the boundary between the first boundary surface T1 provided between the exit portion 8 and the second incident portion 10 and the first boundary surface T1. It has a structure in which a second boundary surface T2 provided between the line S and the first incident portion 7 and the second incident portion 10 is sandwiched and abutted against each other.
  • the first boundary surface T1 is composed of a surface that partitions between the first lens body 9 and the second lens body 11 downward from the boundary line S, and is directed diagonally rearward from the boundary line S. Is tilted.
  • the second boundary surface T2 is a surface that partitions the first lens body 9 and the second lens body 11 from the boundary line S toward the rear, and is directed diagonally upward from the boundary line S. Is tilted.
  • the boundary line S defines the cut-off line of the above-mentioned low beam light distribution pattern while extending in the horizontal direction (horizontal direction) of the vehicle lamp 1A.
  • the first lens body 9 and the second lens body 11 are between the first boundary surface T1 and the second boundary surface by abutting the first boundary surface T1 and the second boundary surface T2 with each other. It is closely adhered or joined without interposing an air layer between the surfaces T2. Further, in the projection lens 4, the first lens body 9 and the second lens body 11 made of different resins can be integrally formed by injection molding (so-called two-color molding) using a mold. ..
  • the first lens body 9 has a pair of arm portions 9a and 9b.
  • the pair of arm portions 9a and 9b are provided so as to extend rearward from both the upper and lower sides of the first lens body 9. Further, the tip sides of the pair of arm portions 9a and 9b have a shape bent in a direction in which they are separated from each other.
  • the pair of arm portions 9a and 9b are fixed together with the circuit board 5 to a fixed position such as a bracket inside the lamp by screwing.
  • the first lens body 9 and the second lens body 11 are maintained in a state where the distance between the first light source 2 and the third light source 3 and the first incident portion 7 and the second incident portion 10 is maintained. Is positioned and fixed with respect to the first light source 2 and the second light source 3.
  • the first incident portion 7 is located at a portion facing the first light source 2, and is a convex first condensing portion on which a part of the first light L1 emitted from the first light source 2 is incident.
  • a first light source emitted from the first light source 2 located on the inner peripheral side of the incident surface 7a and a portion protruding toward the first light source 2 from a position surrounding the periphery of the first light collecting incident surface 7a.
  • first incident portion 7 is adjacent to the second incident portion 10 with the first boundary surface T1 interposed therebetween, the first focused incident surface 7a, the second focused incident surface 7b, and the second incident surface 7b.
  • a part of the lower side of the light-collecting and reflecting surface 7c has a shape cut out along the second boundary surface T2.
  • the first incident portion 7 among the first light L1 radially emitted from the first light source 2, the first light L1 incident on the inside of the first lens body 9 from the first condensing incident surface 7a.
  • Light L1 is focused near the optical axis.
  • the first light L1 incident on the inside of the first lens body 9 from the second light-collecting incident surface 7b is reflected by the light-collecting and reflecting surface 7c to be condensed toward the optical axis.
  • the first light L1 incident on the inside of the first lens body 9 from the first incident portion 7 is emitted from the first light source 2 in the vertical cross section of the vehicle lamp 1A shown in FIG.
  • the light is guided toward the front of the first lens body 9 while condensing light toward the optical axis AX2 which is inclined obliquely downward from the optical axis AX1 of the first light L1.
  • the first light L1 incident on the inside of the first lens body 9 from the first incident portion 7 is the optical axis AX1 of the first light L1 in the horizontal cross section of the vehicle lamp 1A shown in FIG.
  • the light is guided toward the front of the first lens body 9 while being parallel to the lens body 9.
  • the first light L1 is focused toward the optical axis AX1 and is incident on the inside of the first lens body 9. May be good.
  • first light L1 incident on the inside of the first lens body 9 from the first incident portion 7 is guided toward the exit portion 8 in front of the first lens body 9.
  • first light L1 incident on the second boundary surface T2 is reflected by the second boundary surface T2 and then guided toward the exit portion 8.
  • the refractive index of the second lens 11 is smaller than the refractive index of the first lens 9, so that the first light L1 incident on the second interface T2 is transferred. It can be totally reflected toward the emitting unit 8.
  • the second incident portion 10 is located at a portion facing the second light source 3, and is a convex first condensing portion on which a part of the second light L2 emitted from the second light source 3 is incident.
  • a second light emitted from the second light source 3 located on the inner peripheral side of the incident surface 10a and a portion protruding toward the second light source 3 from a position surrounding the periphery of the first light condensing incident surface 10a.
  • the second incident portion 10 of the second light L2 emitted from the second light source 3 the second light L2 incident on the inside of the second lens body 11 from the first condensing incident surface 10a. Is focused near the optical axis.
  • the second light L2 incident on the inside of the second lens body 11 from the second light-collecting incident surface 10b is reflected by the light-collecting and reflecting surface 10c to be condensed toward the optical axis.
  • the second light L2 incident on the inside of the second lens body 11 from the second incident portion 10 is emitted from the second light source 3 in the vertical cross section of the vehicle lamp 1A shown in FIG.
  • the light is guided toward the front of the second lens body 11 while condensing light toward the optical axis AX4 which is inclined obliquely upward from the optical axis AX3 of the second light L2.
  • the second light L2 incident on the inside of the second lens body 11 from the second incident portion 10 is the optical axis AX3 of the second light L2 in the horizontal cross section of the vehicle lamp 1A shown in FIG.
  • the light is guided toward the front of the second lens body 22 while being parallel to the lens body 22.
  • the second incident portion 11 in the horizontal cross section of the vehicle lamp 1A the second light L2 is focused toward the optical axis AX3 and is incident on the inside of the second lens body 11. May be good.
  • the second light L2 incident on the inside of the second lens body 11 from the second incident portion 10 is the first boundary surface T1 and the second boundary surface T1 in front of the second lens body 22. It passes through T2 and enters the inside of the first lens body 9. The second light L2 incident on the inside of the first lens body 9 is guided toward the exit portion 8.
  • the refractive index of the second lens 11 is smaller than the refractive index of the first lens 9, and therefore the first interface T1 and the second interface T1 and the second.
  • the second light L2 incident on the interface T2 can be transmitted toward the exit portion 8.
  • the exiting portion 8 has an exiting surface 8a on the front side of the first lens body 9.
  • the exit surface 8a has the first light L1 and the first light L1 and the first light L1 in the vertical direction (the direction in which the first light source 2 and the second light source 3 are arranged) and the horizontal direction (the direction in which the boundary line S extends) of the vehicle lamp 1A. It is composed of a spherical or aspherical convex lens surface that condenses the light L2 of 2. Further, the focal point of this convex lens surface is set to the boundary line S or its vicinity.
  • the first light L1 and the second light L2 guided inside the first lens body 9 are focused by the emitting surface 8a and emitted to the outside of the first lens body 9. do. Further, in the emitting unit 8, after the first light L1 and the second light L2 emitted from the emitting surface 8a are condensed, they are diffused in the horizontal direction and the vertical direction of the vehicle lamp 1A, so that the first light L1 and the second light L2 are diffused in the horizontal direction and the vertical direction. The first light L1 and the second light L2 are magnified and projected toward the front of the first lens body 9 (projection lens 4).
  • the other surfaces whose illustrations and explanations are omitted are the insides of the first lens body 9 and the second lens body 11. It is possible to freely design (for example, shield) within a range that does not adversely affect the passing first light L1 and the second light L2.
  • the first light L1 emitted by the first light source 2 is directed by the projection lens 4 in the traveling direction of the vehicle as a passing beam (low beam). Project.
  • the first light L1 projected toward the front of the projection lens 4 reverse-projects the light source image formed in the vicinity of the focal point of the emission surface 8a, and the cut-off line defined by the boundary line S at the upper end is cut-off.
  • a low beam light distribution pattern (first light distribution pattern) including the above is formed.
  • the first light L1 and the second light L2 emitted by the first light source 2 and the second light source 3 are emitted by the projection lens 4 as the traveling beam (high beam). Project in the direction of travel of the vehicle.
  • the second light L projected toward the front of the projection lens 4 forms a second light distribution pattern located above the low beam light distribution pattern (first light distribution pattern).
  • the high beam light distribution pattern is formed by superimposing the second light distribution pattern and the low beam light distribution pattern (second light distribution pattern) formed by the first light L1.
  • the first light L1 emitted from the first light source 2 described above is incident on the inside of the first lens body 9 from the first incident portion 7.
  • the first light L1 incident on the inside of the first lens body 9 from the first incident portion 7 is emitted from the first light source 2 in the vertical cross section of the vehicle lamp 1A shown in FIG.
  • the light is guided toward the front of the first lens body 9 while condensing light toward the optical axis AX2 which is inclined obliquely downward from the optical axis AX1 of the first light L1.
  • the first light L11 guided toward the exit portion 8 is emitted from the exit portion 8 to the outside of the first lens body 9.
  • the first light L11 forms a light distribution pattern below the HH line in the low beam light distribution pattern LP shown in FIG.
  • the first light L12 incident on the second boundary surface T2 is reflected by the second boundary surface T2 and then guided toward the exit portion 8 and is guided from the exit portion 8 to the first lens. It is emitted to the outside of the body 9.
  • the first light L12 forms a light distribution pattern near the cut-off line CL in the low beam light distribution pattern LP shown in FIG.
  • the second light L2 emitted from the second light source 3 described above is incident on the inside of the second lens body 11 from the second incident portion 10.
  • the second light L2 incident on the inside of the second lens body 11 from the second incident portion 10 is emitted from the second light source 3 in the vertical cross section of the vehicle lamp 1A shown in FIG.
  • the light is guided toward the front of the second lens body 11 while condensing light toward the optical axis AX4 which is inclined obliquely upward from the optical axis AX3 of the second light L2.
  • the second light L21 incident on the first boundary surface T1 passes through the first boundary surface T1 and is incident on the inside of the first lens body 9, and then toward the exit portion 8. The light is guided and is emitted from the emitting portion 8 to the outside of the first lens body 9.
  • the second light L21 forms a light distribution pattern above the HH line in the high beam light distribution pattern HP shown in FIG.
  • the second light L22 incident on the second boundary surface T2 passes through the second boundary surface T2, enters the inside of the first lens body 9, and then guides the light L22 toward the exit portion 8. It is illuminated and is emitted from the emitting portion 8 to the outside of the first lens body 9. As a result, the second light L22 forms the lower light distribution pattern in the high beam light distribution pattern HP shown in FIG.
  • the second light L22 incident on the second boundary surface T2 passes through the second boundary surface T2
  • the position and light rays of the first light L12 reflected by the second boundary surface T2 It can be approached to the angle.
  • the second light L22 is emitted below the cut-off line CL of the low beam light distribution pattern LP, so that the lower side of the high beam light distribution pattern HP and the low beam light distribution pattern LP shown in FIG. 11 are emitted. It is possible to overlap with the cut-off line CL.
  • the first light L1 and the second light L2 emitted from the first light source 2 and the second light source 3 described above are transmitted by the projection lens 4.
  • the projection lens 4 By projecting, it is possible to obtain a good low beam light distribution pattern and a high beam light distribution pattern.
  • the first lens body 9 and the second lens body 11 constituting the projection lens 4 described above have a first boundary surface T1 and a second boundary surface between the first lens body 9 and the second lens body 11. By abutting the boundary surfaces T2, they are brought into close contact with each other or joined between the first boundary surface T1 and the second boundary surface T2 without an air layer.
  • the vehicle headlight 1A of the present embodiment it is possible to prevent Fresnel loss from occurring between the first boundary surface T1 and between the second boundary surface T2, and the first light source 2 It is possible to improve the utilization efficiency of the first light L1 and the second light L2 emitted from the second light source 3.
  • FIG. 6 is a perspective view showing the configuration of the vehicle lamp 1B.
  • FIG. 7 is an exploded perspective view showing the configuration of the vehicle lamp 1B.
  • FIG. 8 is a vertical cross-sectional view showing the configuration of the vehicle lamp 1B.
  • FIG. 9 is a horizontal cross-sectional view showing the configuration of the vehicle lamp 1B on the first incident portion 7 side.
  • FIG. 10 is a horizontal cross-sectional view showing the configuration of the vehicle lamp 1B on the second incident portion 10 side.
  • the vehicle lamp 1B of the present embodiment includes a third lens body 12 constituting the projection lens 4 in addition to the configuration of the vehicle lamp 1A.
  • the projection lens 4 has a third lens body 12 located on the side facing the exit portion 8 together with the first lens body 9 and the second lens body 11 described above.
  • the third lens body 12 has an incident surface 12a on which the first light L1 and the second light L2 are incident on the back side thereof, and the first light L1 and the second light L2 are emitted on the front side thereof. It has a surface 12b.
  • the first incident surface 12a is a substantially semi-cylindrical concave lens whose cylindrical axis extends in the horizontal direction so as to condense the first light L1 and the second light L2 in the vertical direction of the vehicle lamp 1A. It is composed of faces.
  • the second exit surface 12b is a substantially semi-cylindrical convex lens whose cylindrical axis extends in the horizontal direction so as to condense the first light L1 and the second light L2 in the vertical direction of the vehicle lamp 1A. It is composed of faces.
  • the synthetic focus of the synthetic lens composed of the exit surface 8a of the first lens body 9, the incident surface 12a of the second lens body 12, and the second exit surface 12b is set. It is set at or near the boundary line S.
  • the exit portion 8 has an exit surface 8a for condensing the first light L1 and the second light L2 in the vertical direction and the horizontal direction of the vehicle lamp 1A described above.
  • the configuration may include an exit surface 8a for condensing the first light L1 and the second light L2 only in the horizontal direction of the vehicle lamp 1A.
  • the exit surface 8a has a substantially semi-cylindrical shape whose columnar axis extends in the vertical direction so as to condense the first light L1 and the second light L2 in the horizontal direction of the vehicle lamp 1A. It can be configured with a convex lens surface.
  • the incident surface 12a described above is not limited to the concave lens surface, and the incident surface 12a may be formed by a flat surface.
  • the third lens body 12 is integrally combined with the first lens body 9 in a state where the air layer K is provided between the third lens body 12 and the exit portion 8.
  • the third lens body 12 has a pair of arm portions 12c and 12d.
  • the pair of arm portions 12c and 12d are provided so as to extend rearward from both the upper and lower sides of the third lens body 12. Further, the tip sides of the pair of arm portions 12c and 12d have a shape bent in a direction in which they are separated from each other.
  • the pair of arm portions 12c and 12d are positioned and fixed with respect to the first lens body 9 in a state where the first lens body 9 is sandwiched between the pair of arm portions 12c and 12d.
  • the first lens body 9 and the third lens body 12 are integrally combined with the air layer K provided between the entrance surface 12a and the exit surface 8a.
  • the other surfaces whose illustrations and explanations are omitted are referred to as the first light L1 and the second light L2 passing through the inside of the third lens body 12. It is possible to freely design (for example, shield) as long as it does not adversely affect it.
  • the first light L1 emitted by the first light source 2 is directed by the projection lens 4 in the traveling direction of the vehicle as a passing beam (low beam). Project.
  • the first light L1 projected toward the front of the projection lens 4 reverse-projects the light source image formed in the vicinity of the focal point of the emission surface 8a, and the cut-off line defined by the boundary line S at the upper end is cut-off.
  • a low beam light distribution pattern (first light distribution pattern) including the above is formed.
  • the first light L1 and the second light L2 emitted by the first light source 2 and the second light source 3 are emitted by the projection lens 4 as the traveling beam (high beam). Project in the direction of travel of the vehicle.
  • the second light L projected toward the front of the projection lens 4 forms a second light distribution pattern located above the low beam light distribution pattern (first light distribution pattern).
  • the high beam light distribution pattern is formed by superimposing the second light distribution pattern and the low beam light distribution pattern (second light distribution pattern) formed by the first light L1.
  • the first light L1 emitted from the first light source 2 described above is incident on the inside of the first lens body 9 from the first incident portion 7.
  • the first light L1 incident on the inside of the first lens body 9 from the first incident portion 7 is emitted from the first light source 2 in the vertical cross section of the vehicle lamp 1B shown in FIG.
  • the light is guided toward the front of the first lens body 9 while condensing light toward the optical axis AX2 which is inclined obliquely downward from the optical axis AX1 of the first light L1.
  • the first light L11 guided toward the exit portion 8 is emitted from the exit portion 8 to the outside of the first lens body 9. Further, the light L11 emitted to the outside of the first lens body 9 is incident on the inside of the third lens body 12 from the incident surface 12a via the air layer K, and is incident on the inside of the third lens body 12 from the exit surface 12b to the third lens body. It is emitted to the outside of 12. As a result, the first light L11 forms a light distribution pattern below the HH line in the low beam light distribution pattern LP shown in FIG.
  • the first light L12 incident on the second boundary surface T2 is reflected by the second boundary surface T2 and then guided toward the exit portion 8 and is guided from the exit portion 8 to the first lens. It is emitted to the outside of the body 9. Further, the light L12 emitted to the outside of the first lens body 9 is incident on the inside of the third lens body 12 from the incident surface 12a via the air layer K, and is incident on the inside of the third lens body 12 from the exit surface 12b to the third lens body. It is emitted to the outside of 12. As a result, the first light L12 forms a light distribution pattern near the cut-off line CL in the low beam light distribution pattern LP shown in FIG.
  • the second light L2 emitted from the second light source 3 described above is incident on the inside of the second lens body 11 from the second incident portion 10.
  • the second light L2 incident on the inside of the second lens body 11 from the second incident portion 10 is emitted from the second light source 3 in the vertical cross section of the vehicle lamp 1A shown in FIG.
  • the light is guided toward the front of the second lens body 11 while condensing light toward the optical axis AX4 which is inclined obliquely upward from the optical axis AX3 of the second light L2.
  • the second light L21 incident on the first boundary surface T1 passes through the first boundary surface T1 and is incident on the inside of the first lens body 9, and then toward the exit portion 8.
  • the light is guided and is emitted from the emitting portion 8 to the outside of the first lens body 9.
  • the light L21 emitted to the outside of the first lens body 9 is incident on the inside of the third lens body 12 from the incident surface 12a via the air layer K, and is incident on the inside of the third lens body 12 from the exit surface 12b to the third lens body. It is emitted to the outside of 12.
  • the second light L21 forms a light distribution pattern above the HH line in the high beam light distribution pattern HP shown in FIG.
  • the second light L22 incident on the second boundary surface T2 passes through the second boundary surface T2, enters the inside of the first lens body 9, and then guides the light L22 toward the exit portion 8. It is illuminated and is emitted from the emitting portion 8 to the outside of the first lens body 9. Further, the light L22 emitted to the outside of the first lens body 9 is incident on the inside of the third lens body 12 from the incident surface 12a via the air layer K, and is incident on the inside of the third lens body 12 from the exit surface 12b to the third lens body. It is emitted to the outside of 12. As a result, the second light L22 forms the lower light distribution pattern in the high beam light distribution pattern HP shown in FIG.
  • the second light L22 incident on the second boundary surface T2 passes through the second boundary surface T2
  • the position and light rays of the first light L12 reflected by the second boundary surface T2 It can be approached to the angle.
  • the second light L22 is emitted below the cut-off line CL of the low beam light distribution pattern LP, so that the lower part of the high beam light distribution pattern HP and the low beam light distribution pattern LP are cut as shown in FIG. It is possible to overlap with the offline CL.
  • the first light L1 and the second light L2 emitted from the first light source 2 and the second light source 3 described above are transmitted by the projection lens 4.
  • the projection lens 4 By projecting, it is possible to obtain a good low beam light distribution pattern and a high beam light distribution pattern.
  • the first lens body 9 and the second lens body 11 constituting the projection lens 4 described above have a first boundary surface T1 and a second boundary surface between the first lens body 9 and the second lens body 11. By abutting the boundary surfaces T2, they are brought into close contact with each other or joined between the first boundary surface T1 and the second boundary surface T2 without an air layer.
  • the vehicle headlight 1B of the present embodiment it is possible to prevent Fresnel loss from occurring between the first boundary surface T1 and between the second boundary surface T2, and the first light source 2 It is possible to improve the utilization efficiency of the first light L1 and the second light L2 emitted from the second light source 3.
  • the vehicle lighting fixture 1B of the present embodiment by adding the third lens body 12 described above, the vehicle lighting fixture is located between the exit portion 8 of the first lens body 9 and the third lens body 12.
  • the function of condensing the first light L1 and the second light L2 in the vertical direction of 1B and the function of condensing the first light L1 and the second light L2 in the horizontal direction of the vehicle lamp 1B It is possible to share.
  • the present invention is not necessarily limited to that of the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
  • the vehicle lighting equipment to which the present invention is applied is preferably used for the vehicle headlamp (headlamp) described above, but the vehicle lighting equipment to which the present invention is applied is the vehicle on the front side described above.
  • the present invention can be applied not only to lighting fixtures but also to vehicle lighting fixtures on the rear side such as rear combination lamps.
  • the present invention is a second light source that emits the first light and a second light source that is arranged adjacent to the first light source and emits the second light in the same direction as the first light.
  • the present invention can be widely applied to vehicle lamps including a light source of the above and a projection lens that projects the first light and the second light in the same direction.
  • the colors of the first light and the second light are not limited to the white light described above, but can be appropriately changed according to the intended use such as red light and orange light. Further, it is also possible to configure the first light source and the second light source to selectively emit the first light and the second light having different colors from each other.
  • the direction in which the first light source 2 and the second light source 3 described above are lined up is the vertical direction of the vehicle lighting fixtures 1A and 1B, and the direction in which the boundary line S extends is for the vehicle.
  • the lighting fixtures 1A and 1B are in the horizontal direction
  • the direction in which the first light source and the second light source are lined up is the horizontal direction of the vehicle lighting fixture
  • the direction in which the boundary line extends is the vertical direction of the vehicle lighting fixture. It is also possible to apply the present invention to vehicle lighting equipment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
PCT/JP2021/011862 2020-03-24 2021-03-23 車両用灯具 Ceased WO2021193588A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202180016276.7A CN115151756B (zh) 2020-03-24 2021-03-23 车辆用灯具
US17/911,427 US11713858B2 (en) 2020-03-24 2021-03-23 Vehicle lighting
EP21776071.9A EP4130569B1 (en) 2020-03-24 2021-03-23 Vehicle lighting

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JP2020-052029 2020-03-24
JP2020052029A JP7423371B2 (ja) 2020-03-24 2020-03-24 車両用灯具

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JP7540299B2 (ja) * 2020-10-30 2024-08-27 市光工業株式会社 車両用前照灯
US12352400B2 (en) * 2021-08-30 2025-07-08 Koito Manufacturing Co., Ltd. Microlens array and vehicle lamp using microlens array
JP2024002552A (ja) * 2022-06-24 2024-01-11 市光工業株式会社 車両用灯具
WO2025047540A1 (ja) * 2023-08-31 2025-03-06 株式会社小糸製作所 車両用前照灯
WO2025263257A1 (ja) * 2024-06-19 2025-12-26 株式会社小糸製作所 車両用前照灯の光源モジュール
EP4682426A1 (en) * 2024-07-17 2026-01-21 ZKW Group GmbH Lighting device with a high-beam module for a vehicle headlamp

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EP4130569A4 (en) 2023-10-04
US11713858B2 (en) 2023-08-01
CN115151756B (zh) 2024-09-17
EP4130569A1 (en) 2023-02-08
CN115151756A (zh) 2022-10-04
EP4130569B1 (en) 2025-07-09
US20230100039A1 (en) 2023-03-30
JP2021150262A (ja) 2021-09-27
JP7423371B2 (ja) 2024-01-29

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