EP3537030A1 - Fahrzeuglampe - Google Patents

Fahrzeuglampe Download PDF

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Publication number
EP3537030A1
EP3537030A1 EP17866521.2A EP17866521A EP3537030A1 EP 3537030 A1 EP3537030 A1 EP 3537030A1 EP 17866521 A EP17866521 A EP 17866521A EP 3537030 A1 EP3537030 A1 EP 3537030A1
Authority
EP
European Patent Office
Prior art keywords
light
light emitting
incident surface
lens
optical axis
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.)
Pending
Application number
EP17866521.2A
Other languages
English (en)
French (fr)
Other versions
EP3537030A4 (de
Inventor
Yasuhiro Okubo
Takanori Hamamoto
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.)
Ichikoh Industries Ltd
Original Assignee
Ichikoh Industries 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 Ichikoh Industries Ltd filed Critical Ichikoh Industries Ltd
Publication of EP3537030A1 publication Critical patent/EP3537030A1/de
Publication of EP3537030A4 publication Critical patent/EP3537030A4/de
Pending 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
    • F21S41/255—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
    • 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
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F21S41/275—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
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—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
    • F21S41/60—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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape

Definitions

  • the present invention relates to a vehicle lamp.
  • Patent Literature 1 discloses a vehicle lamp which is provided with a lamp unit capable of forming both a low beam light distribution pattern and a high beam light distribution pattern, and in which a variable high beam (Adaptive Driving Beam) control to change a light distribution pattern according to the position of a preceding vehicle or oncoming vehicle by using a plurality of light emitting chips is possible for the high beam light distribution pattern.
  • a variable high beam Adaptive Driving Beam
  • the present invention has been achieved in view of such circumstances, and an object thereof is to provide a vehicle lamp which is provided with a lamp unit capable of forming both a low beam light distribution pattern and a high beam light distribution pattern, and in which a collapsed light distribution is suppressed.
  • the present invention is grasped by the following configuration to achieve the above-mentioned object.
  • a vehicle lamp which is provided with a lamp unit capable of forming both a low beam light distribution pattern and a high beam light distribution pattern, and in which a collapsed light distribution is suppressed.
  • front and rear respectively indicate a “forward direction” and “rearward direction” of a vehicle
  • upper and lower respectively indicate a direction viewed from a driver on the vehicle.
  • a vehicle lamp according to the embodiment of the present invention is a vehicle head lamp (101R, 101L) provided on each of the left and right of the front of a vehicle 102 illustrated in FIG. 1 , and hereinafter, will be simply referred to as "vehicle lamp”.
  • the vehicle lamp of the present embodiment includes a housing (not illustrated) opened forward of the vehicle and an outer lens (not illustrated) attached to the housing to cover the opening, where a lamp unit 10 (see FIG. 2 ) and the like are arranged in a lamp chamber formed by the housing and the outer lens.
  • the vehicle lamp on the right side of the vehicle will be mainly described as an example, but the description applies commonly to the left and right vehicle lamps unless otherwise particularly mentioned.
  • FIG. 2 is a plan view of the lamp unit 10 as viewed from the front side
  • FIG. 3 is a cross-sectional view of the lamp unit 10.
  • FIG. 2 a lens 50 is omitted to easily understand the inside and FIG. 3 is a vertical cross-sectional view along a basic optical axis (see Z axis) passing through a rear basic focal point O of the lens 50.
  • the lamp unit 10 mainly includes a heat sink 20, a first light source 25, a reflector 30, a shade 31, an attachment member 40, a second light source 43, a power feeding connector 44, the lens 50, a first reflection unit 61, and a second reflection unit 62.
  • the heat sink 20 includes a base unit 21 and a plurality of radiation fins 22 extending vertically downward, the plurality of radiation fins 22 being integrally formed vertically beneath the base unit 21.
  • a mounting unit 26 configured to mount the first light source 25 is formed on a vertically upper surface of the base unit 21, where the first light source 25 is to be attached by a holder 27.
  • the heat sink 20 is formed of a metal or a resin having a high thermal conductivity to efficiently dissipate a heat generated by the first light source 25, and in the present embodiment, the heat sink 20 made of aluminum by die casting is used.
  • the first light source 25 is a light source for emitting light to form a low beam light distribution pattern, and includes a first substrate 23 arranged on the mounting unit 26 and a first light emitting chip 24 arranged on the first substrate 23 to emit light vertically upward.
  • the first light emitting chip 24 is not necessarily limited to an LED chip, for example, and may be an LD chip (laser diode chip) which is a semiconductor type light emitting element.
  • LD chip laser diode chip
  • the reflector 30 is a member for reflecting light emitted vertically upward from the first light emitting chip 24 toward the lens 50, and a reflecting surface 30a of the reflector 30 is attached to the base unit 21 of the heat sink 20 to cover above the first light emitting chip 24 in a semi-dome form to open forward.
  • the shade 31 is arranged between the first light source 25 and the lens 50, as illustrated in FIG. 3 , and is a member for shielding part of light reflected by the reflector 30 toward the lens 50 to form a cutoff line of the low beam light distribution pattern.
  • the shade 31 is arranged so that an edge 31a on the front side of the shade 31 has a shape matching the cutoff line, and the rear basic focal point O of the lens 50 is located in the vicinity of a portion forming an upper end of the oblique cutoff line of the edge 31a on the front side of the shade 31.
  • the shade 31 is arranged so that the rear basic focal point O of the lens 50 is located about 1.0 mm behind the edge 31a on the front side of the shade 31.
  • the attachment member 40 is a member to which the shade 31, the second light source 43 described later, the power feeding connector 44, the first reflection unit 61, and the second reflection unit 62 are attached.
  • the attachment member 40 is formed as a separate member from the heat sink 20 and the attachment member 40 is fixed to the heat sink 20
  • the attachment member 40 may not be formed as a separate member from the heat sink 20, and it is possible to design a structure where the attachment member 40 is integrally formed with the heat sink 20.
  • a first surface 40a located on the front side is a surface on which the second light source 43 is arranged, and although a reason is explained later, the first surface 40a is formed to be directed obliquely vertically upward at an angle ⁇ 1 with respect to the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50.
  • the first surface 40a is inclined obliquely vertically upward such that the angle ⁇ 1 is about 25°.
  • the second light source 43 is a light source for emitting light to form a high beam light distribution pattern, and as illustrated in FIG. 3 , includes a second substrate 41 arranged on the first surface 40a of the attachment member 40 and a plurality of second light emitting chips 42 (see FIG. 2 ) provided on the second substrate 41 to be aligned in the horizontal direction.
  • the second light emitting chip 42 similarly to the first light emitting chip 24, the second light emitting chip 42 also employs an LED chip which is a semiconductor type light emitting element, but the second light emitting chip 42 is not necessarily limited to an LED chip and may be an LD chip (laser diode chip) which is a semiconductor type light emitting element.
  • the second light emitting chip 42 is not necessarily limited to an LED chip and may be an LD chip (laser diode chip) which is a semiconductor type light emitting element.
  • the four second light emitting chips 42 are provided at the outer side (on the left side in FIG. 2 ) of the vehicle on the basis of the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50 and the seven second light emitting chips 42 are provided at the inner side (on the right side in FIG. 2 ) of the vehicle, that is, a total of eleven second light emitting chips 42 are aligned in the horizontal direction; however, the number of the second light emitting chips 42 may be increased or decreased according to a horizontal light distribution range required for the high beam light distribution pattern to be formed.
  • the arrangement of the second light emitting chips 42 on the left and right sides in the horizontal direction may be reversed on the basis of the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50.
  • the inner side and the outer side of the vehicle is reversed when a relationship between the left side and the right side of the vehicle is reversed, and thus, if the arrangement state of the second light emitting chips 42 is described on the basis of the inner side and the outer side of the vehicle, as described above, the four second light emitting chips 42 are provided at the outer side (on the left side in FIG. 2 ) of the vehicle on the basis of the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50, and the seven second light emitting chips 42 are provided at the inner side of the vehicle (on the right side in FIG. 2 ).
  • the two second light emitting chips 42 on the innermost side (on the right side in FIG. 2 ) of the vehicle are arranged to differ in arrangement pitch in the horizontal direction from the remaining nine second light emitting chips 42, specifically, to slightly widen in pitch; however, the arrangement pitch in the horizontal direction among the second light emitting chips 42 may be set so that the light distribution patterns formed by the light from the adjacent second light emitting chips 42 appropriately overlap on the screen.
  • the second light source 43 is illustrated as an example where the plurality of second light emitting chips 42 are arranged on the second substrate 41 which is one common substrate; however, a configuration may be adopted where a substrate is arranged for each of the second light emitting chips 42 to form a second light source unit provided with a plurality of light sources.
  • a variable high beam (Adaptive Driving Beam) control to change the high beam light distribution pattern can be performed by controlling turning on/off of the second light emitting chip 42 according to a location of a preceding vehicle or an oncoming vehicle to suppress generation of glare light to the preceding vehicle or the oncoming vehicle.
  • Adaptive Driving Beam Adaptive Driving Beam
  • the power feeding connector 44 is a connector to which an external connector for feeding power is connected, is arranged on the second substrate 41, and is electrically connected to a conductive pattern to the second light emitting chip 42 formed on the second substrate 41, as illustrated in FIG. 3 .
  • the lens 50 is a member which is made of glass, resin, or the like, and which performs light distribution control to illuminate the light beams from the first light emitting chip 24 and the second light emitting chip 42 so that a predetermined light distribution pattern is formed forward, and is attached with the heat sink 20 via a lens holder 50a.
  • the lens 50 is not particularly limited, but the lens 50 is preferably made of resin from a viewpoint that the resin has a good moldability.
  • an acrylic-based resin having a small wavelength dependency of a refractive index is preferable.
  • the lens 50 may be required to have heat resistance.
  • a polycarbonate-based resin excellent in heat resistance may be employed.
  • the first reflection unit 61 is a member for reflecting part of the light emitted vertically downward from each of the second light emitting chips 42, and is attached to the attachment member 40.
  • the first reflection unit 61 reflects the light emitted vertically downward at an angle ⁇ 2 larger than about 17° with respect to the basic optical axis (see Z axis) passing through the rear basic focal point O of the lens 50.
  • the second reflection unit 62 is a member for reflecting part of light emitted vertically upward from each of the second light emitting chips 42.
  • the second reflection unit 62 is provided vertically below the shade 31, and is attached, together with the shade 31, to the attachment member 40.
  • the second reflection unit 62 is arranged such that the reflecting surface of the second reflection unit 62 is substantially parallel to a light emission optical axis OZ passing through a light emission center of the second light emitting chips 42.
  • FIGS. 4(a) and 4(b) are views each explaining a shape of an incident surface 51 of the lens 50, where FIG. 4(a) is a vertical cross-sectional view along the basic optical axis (see Z axis) passing through the rear basic focal point O of the lens 50 and FIG. 4(b) is a horizontal cross-sectional view along the basic optical axis (see Z axis) passing through the rear basic focal point O of the lens 50.
  • FIG. 5 is a view for explaining a method of designing the incident surface used for suppressing a collapsed light distribution due to an off-axis aberration.
  • a lens L illustrated in FIG. 5 illustrates a horizontal cross-sectional view of a lens having a basic shape for forming the lens 50.
  • FIG. 5 illustrates an example of a state where a beam of light parallel to an optical axis P of the lens L enters the lens L from one surface S1 and exits from the other surface S2. It is noted that an extended line of the beam of light before entering the one surface S1 and an extended line of the beam of light after exiting from the other surface S2 are indicated with a dashed line, and a point D is a point at which these extended lines intersect (see a point at which the dashed lines intersect).
  • a trajectory of the point D is as indicated with a dotted line, and the trajectory indicated with the dotted line is a principal surface SML of the lens L.
  • a point at which the optical axis P of the lens L and the principal surface SML intersect is a principal point SP of the lens L.
  • the other surface S2 may be formed so that a distance K between the basic focal point BF of the lens L and the point D is constant at a focal length F.
  • the shape of the incident surface is evaluated so that the offense against the sine condition OSC is small, the shape obtained will have a radius of curvature continuously larger toward a radial direction (that is, an outer peripheral edge direction of the lens 50) with respect to a point M (see FIG. 4 ) at which the basic optical axis (see Z axis) passing through the rear basic focal point O (see FIG. 3 ) of the lens 50 intersects the incident surface 51.
  • the lens 50 of the present embodiment is obtained by partially modifying a basic shape being the shape evaluated based on the offense against the sine condition OSC, considering performing light distribution control for a low beam light distribution pattern and light distribution control for a high beam light distribution pattern.
  • the lens 50 includes the incident surface 51 on which the light is incident, the incident surface 51 includes an upper incident surface 52 vertically above the basic optical axis (see Z axis) passing through the rear basic focal point O (see FIG. 3 ) of the lens 50 and a lower incident surface 53 vertically below the basic optical axis (see Z axis), and as described above, and the upper incident surface 52 has a shape with the radius of curvature increasing from the basic optical axis (see Z axis) side toward the outer edge of the upper incident surface 52.
  • the radius of curvature Rvc is about 150 mm on the point M (see FIG. 4 ) side where the basic optical axis (see Z axis) and the incident surface 51 intersect, the radius of curvature continuously increases as the upper incident surface 52 moves vertically upward, and the radius of curvature Rvt is about 300 mm on the outer edge side of the upper incident surface 52.
  • the lower incident surface 53 is linear from the point M to a lower end (lower end Rvb) of the lower incident surface 53 to suppress an influence on the low beam light distribution pattern.
  • a diameter of the lens 50 is about 68 mm, and thus, when viewed in the vertical cross section along the basic optical axis (see Z axis) passing through the rear basic focal point O (see FIG. 3 ) of the lens 50, a vertical width of the lower incident surface 53 is about 34 mm, and even if the lower incident surface 53 is a curved surface projecting rearward, when the radius of curvature of the lower incident surface 53 is sufficiently large with respect to the width of the lower incident surface 53 of the vertical cross section along the basic optical axis (see Z axis) (for example, in a case of having a radius of curvature equal to or greater than 20 times the vertical width of the lower incident surface 53), that is, when the lower incident surface 53 is a sufficiently gentle curved surface having a constant radius of curvature of about 1000 mm, the lower incident surface 53 can be said to be sufficiently linear.
  • the upper incident surface 52 and the lower incident surface 53 have the shapes as described above, and thus, as illustrated in FIG. 4(a) , in the vertical cross section of the basic optical axis (see Z axis) passing through the rear basic focal point O of the lens (see FIG. 3 ), an upper end UE of the upper incident surface 52 is located forward of the lower end Rvb of the lower incident surface 53.
  • a radius of curvature Rhc is about 250 mm at the point M (see FIG. 4 ) side where the basic optical axis (see Z axis) and the incident surface 51 intersect and the radius of curvature continuously increases as the upper incident surface 52 moves horizontally outward, and at the outer edge side of the upper incident surface 52, the radii of curvature Rhl and Rhr are both about 450 mm.
  • the radius of curvature similarly becomes large continuously toward the outer peripheral edge side.
  • the upper incident surface 52 has a shape in which the radius of curvature increases from the side of the basic optical axis (see Z axis) toward the outer edge of the upper incident surface 52 (a shape in which the radius of curvature increases radially).
  • the lower incident surface 53 has a radius of curvature increasing from a horizontal center (Z axis) side toward the horizontal outer side, and has a shape in which the vertical cross section is linear.
  • the incident surface 51 on an adjustable surface in a convex shape is formed on the rear side provided with the upper incident surface 52 and the lower incident surface 53 having such a shape, it is possible to suppress collapsed light distribution due to an off-axis aberration.
  • the second light emitting chips 42 are aligned on a horizontal line passing through a point at a position vertically below the rear basic focal point O of the lens 50 (in this example, about 1.8 mm below the rear basic focal point O), and assuming that light emitted from each of the second light emitting chips 42 is not disturbed by any object, and each of the second light emitting chips 42 is not inclined vertically upward as in the present embodiment, if the light is illuminated toward the lens 50, the light distribution pattern formed by the light emitted from each of the second light emitting chips 42 may be vertically separated.
  • the light distribution pattern may be vertically separated.
  • FIG. 6 simulates a case where the light from the second light emitting chip 42 arranged in close proximity to the left side (inner side of the vehicle) of the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50 in FIG. 2 is not reflected by the first reflection unit 61 nor the second reflection unit 62, and further, the second light emitting chip 42 are arranged without being inclined obliquely vertically upward, and the light is illuminated toward the incident surface 51.
  • a VU-VL line in FIG. 6 indicates a vertical reference line on the screen
  • an HL-HR line indicates a horizontal reference line on the screen.
  • the light distribution pattern on the screen is indicated by an isophotal contour.
  • the vertical reference line on the screen is indicated by the VU-VL line
  • the horizontal reference line on the screen is indicated by the HL-HR line
  • the light distribution pattern is indicated by an isophotal contour.
  • a light distribution pattern formed by the light illuminated forward after being incident on the lens 50 from the upper incident surface 52 appears on the vertical lower side on the screen
  • a light distribution pattern formed by the light illuminated forward after being incident on the lens 50 from the lower incident surface 53 appears on the vertical upper side on the screen, possibly resulting in formation of a vertically separated light distribution pattern.
  • FIGS. 7(a) and 7(b) are views each explaining the shape of the exit surface 54 of the lens 50, where FIG. 7(a) is a view where the lens 50 is seen from a rear side (view where the incident surface 51 is seen from the front side), and FIG. 7(b) is a vertical cross-sectional view along the basic optical axis (see Z axis) passing through the rear basic focal point O of the lens 50.
  • the lens 50 includes the exit surface 54 including an upper exit surface 55 vertically above the basic optical axis (see Z axis) passing through the rear basic focal point O (see FIG. 3 ) of the lens 50 and a lower exit surface 56 vertically below the basic optical axis (see Z axis).
  • the lower exit surface 56 includes, as viewed from the incident surface 51 side, a first lower exit surface 56a on a horizontal center side, an exit surface 56b on a left outside in the horizontal direction (inner side of the vehicle), and an exit surface 56c on a right outside (outer side of the vehicle) in the horizontal direction.
  • exit surface 56b and the exit surface 56c are collectively referred to, the second lower exit surfaces 56b and 56c may be mentioned.
  • the lower exit surface 56 includes the first lower exit surface 56a on the horizontal center side, and the two second lower exit surfaces 56b and 56c located at the horizontal outer side of the first lower exit surface 56a.
  • the first lower exit surface 56a is a region from which light from the first light emitting chip 24 (see FIG. 3 ) configured to emit light for forming the low beam light distribution pattern is mainly illuminated forward
  • the second lower exit surfaces 56b and 56c located horizontally outside the first lower exit surface 56a are regions where light from the first light emitting chip 24 (see FIG. 3 ) is hardly illuminated forward, that is, regions not greatly contributing to the formation of the low beam light distribution pattern.
  • the separation as illustrated in FIG. 6 in the high beam light distribution pattern is suppressed and the light distribution pattern is brought closer to a rectangular light distribution pattern while not affecting the low beam light distribution pattern.
  • the second lower exit surfaces 56b and 56c are formed in a shape allowing the light from the point light source to be illuminated vertically downward on the screen.
  • a position of the outer peripheral edge at the horizontal outer side from the position Q1 is defined as a position Q2
  • a position of the peripheral edge vertically below the position Q1 is defined as a position Q3
  • a position which is a vertex of a right angled triangle other than the position Q2 and the position Q3 obtained when a right angled triangle formed by connecting the position Q1, the position Q2, and the position Q3 is symmetrical with a straight line connecting the position Q2 and the position Q3, is defined as a position Q4.
  • the second lower exit surfaces 56b and 56c are shaped to illuminate the light at 1.5 degrees downward of a horizontal reference line on the screen (in FIG. 7 , the downward direction is indicated by a minus sign).
  • the second lower exit surfaces 56b and 56c are shaped to illuminate the light at 1.5 degrees downward of a horizontal reference line on the screen (in FIG. 7 , the downward direction is indicated by a minus sign).
  • the second lower exit surfaces 56b and 56c are shaped to illuminate the light 1.5 degrees downward of a horizontal reference line on the screen (in FIG. 7 , the downward direction is indicated by a minus sign).
  • the lens 50 does not exist up to the position Q4, so the illuminated light does not reach 1.5 degrees downward of the horizontal reference line at the outer peripheral edge which is an end of the actual lens 50.
  • the second lower exit surfaces 56b and 56c are formed in a shape allowing the light from the point light source to be illuminated vertically downward on the screen.
  • the light illuminated forward from the lower exit surface 56 forms a light distribution pattern appearing on the vertical upper side on the screen, and as described above, when the shapes of the second lower exit surfaces 56b and 56c are adjusted, the light is distributed so that the upper side of the upper light distribution pattern illustrated in FIG. 6 is located on the lower side and horizontally widened slightly, and thus, the upper light distribution pattern is closer to a rectangular light distribution pattern and expanded toward the lower light distribution pattern appearing on the screen, and a light is distributed to be controlled in a direction in which the two separate light distribution patterns are integrated.
  • the light illuminated forward from the upper exit surface 55 forms a light distribution pattern appearing on the vertical lower side on the screen
  • the shape of the upper exit surface 55 is adjusted to expand upward the lower light distribution pattern illustrated in FIG. 6 to obtain a shape closer to a rectangular shape
  • the lower light distribution pattern can be integrated with the light distribution pattern appearing on the vertical upper side on the screen formed by the light form the lower exit surface 56, and the light distribution pattern obtained when the two light distribution patterns are multiplexed can be brought closer to a rectangular shape.
  • the upper exit surface 55 will be described below.
  • the upper exit surface 55 is formed in a shape to distribute the light downward on the center side of the lens 50 and distribute the light upward on the upper side of the lens 50.
  • the upper exit surface 55 is formed in a shape to continuously illuminate the light from the point light source vertically downward as the upper exit surface 55 moves vertically upward, and at the lowest illumination position, as indicated by a beam of light L2, the upper exit surface 55 is designed to illuminate the light at 1.2 degrees vertically downward of the horizontal reference line on the screen (in FIG. 7 , the downward direction is indicated by a minus sign).
  • the upper exit surface 55 is formed in a shape to continuously illuminate the light from the point light source vertically upward as the upper exit surface 55 moves further vertically upward, and at the vertically uppermost position of the upper exit surface 55, as indicated by a beam of light L3, the upper exit surface 55 is designed to illuminate the light at 0.7 degree vertically upward of the horizontal reference line on the screen.
  • the point light source is present at the rear basic focal point O
  • the upper exit surface 55 moves vertically upward
  • the upper exit surface 55 is shaped to illuminate the light from the point light source vertically upward after illuminating the light vertically downward
  • the light can be distributed so that a vertically lower rounded portion in the lower light distribution pattern illustrated in FIG. 6 is placed in the upper side to widen a light distribution range vertically upward while bringing the light distribution pattern on the vertical lower side close to a rectangular shape.
  • such a light distribution pattern can be formed where the light illuminated from the upper exit surface 55 is distributed vertically upward after continuously distributing the light vertically downward as the upper exit surface 55 moves vertically upward, the influence of a spectrum of the lens 50 can be suppressed, and a spectral color appearing at a lower end of the light distribution pattern formed by the light illuminated from the upper exit surface 55 can also be suppressed.
  • the second light emitting chip 42 is arranged so that the light emitting surface thereof is inclined vertically upward so that the light emission optical axis OZ passing through a light emission center of the second light emitting chip 42 intersects with an intermediate portion in the vertical direction of the upper incident surface 52 to increase an amount of light illuminated from the upper exit surface 55, light distribution patterns as illustrated in FIGS. 8(a), 8(b), and 8(c) are formed.
  • FIGS. 8(a), 8(b), and 8(c) are views each illustrating a light distribution pattern on a screen formed before the first reflection unit 61 and the second reflection unit 62 according to the present embodiment are provided, where FIG. 8(a) is a view illustrating a light distribution pattern formed by the light illuminated from the upper exit surface 55, FIG. 8(b) is a view illustrating a light distribution pattern formed by the light illuminated from the lower exit surface 56, and FIG. 8(c) is a view illustrating a light distribution pattern formed by the light from the second light emitting chip 42, the light distribution pattern being multiplexed with the light distribution patterns in FIG. 8(a) and FIG. 8(b) .
  • the light distribution pattern formed by the light illuminated from the upper exit surface 55 (see FIG. 8(a) ) and the light distribution pattern formed by the light illuminated from the lower exit surface 56 (see FIG. 8(b) ) are shaped to be generally highly close to a rectangular shape, and can be sufficiently overlapped in the vertical direction if these light distribution patterns are multiplexed.
  • the light distribution pattern formed by multiplexing the light distribution patterns illustrated in FIGS. 8(a) and 8(b) will not generate a crack as illustrated in FIG. 6 , and is formed to be generally highly close to a rectangular shape.
  • the separation of the high intensity band is further suppressed by mainly providing the first reflection unit 61.
  • the light beams emitted vertically downward from each of the second light emitting chips 42 are reflected toward the upper incident surface 52 to limit the light incident on the lens 50 from the lower incident surface 53.
  • the first reflection unit 61 reflects vertically upward some of the light beams toward the lower incident surface 53, among the light beams illuminated from each of the second light emitting chips 42 to the lens 50, to increase an amount of light incident on the upper incident surface 52 compared to an amount of light incident on the lower incident surface 53.
  • the first reflection unit 61 reflects the light beams toward the upper incident surface 52, among the light beams emitted directly toward the lower incident surface 53 from the second light emitting chips 42, so that the amount of light incident on the lower incident surface 53 is half or less (in the present example, substantially reduced to half) of that.
  • the amount of light is not reduced necessarily to half or less, and for example, the amount of light is preferably reduced to about 1/3 to 6/7.
  • the amount of light in the light distribution pattern formed by the light illuminated from the lower exit surface 56 after being incident on the lens 50 from the lower incident surface 53, that is, the light distribution pattern appearing on the upper side on the screen, can be reduced to half.
  • the light reflected by the first reflection unit 61 is to be illuminated from the upper exit surface 55 upward by about 5 degrees than the horizontal reference line on the screen, and is distributed to a vertically upper outer periphery of the light distribution pattern illustrated in FIG. 8(a) .
  • a light diffusion structure configured to diffuse the light is provided on the incident surface 51 to obtain uniform light distribution.
  • FIG. 9 is a view for explaining the light diffusion structure formed on the light incident surface 51.
  • FIG. 9 a view illustrating a shape of the light diffusion structure is also illustrated as an enlarged view.
  • the light diffusion structure divides the incident surface 51 into four regions (a first region 57a, a second region 57b, a third region 57c, and a fourth region 57d) to adjust a light diffusion amount.
  • the light diffusion structure formed in each of the regions has a structure formed with a plurality of recesses and projections, as illustrated in the enlarged view, where an amount of recesses and projections (height of recesses and projections) is set according to each region to adjust the light diffusion amount.
  • the light diffusion structure formed with rounded recesses and projections is illustrated, but the light diffusion structure may have a ridge line having a rectangular shape or a diamond shape, and may have a concave or convex structure of a square pyramid.
  • a basic shape of the incident surface 51 may be retained between the projections and between the recesses and the projections, and the light diffusion amount may be adjusted by adjusting a density of the projections and that of the recesses and the projections.
  • the amount of recesses and projections is set to 5 ⁇ m in consideration of an influence on the low beam light distribution pattern, and gradation is added to the light distribution pattern illustrated in FIG. 8(b) to make less noticeable the high intensity band seen in FIG. 8(b) .
  • the three regions that is, the second region 57b on the horizontal center side, the third region 57c on the right side (outer side of the vehicle) in the horizontal direction of the second region 57b, and the fourth region 57d on the left side (inner side of the vehicle) in the horizontal direction of the second region 57b, are set, and the amount of recesses and projections of the second region 57b is set to 6 ⁇ m, which means that the light diffusion amount is set larger than that of the light diffusion structure formed on the lower incident surface 53.
  • the gradation is strongly added by increasing the light diffusion amount of the second region 57b, and the inner side in the light distribution pattern of FIG. 8(a) is expanded outward to bring the light distribution shape much closer to a rectangular shape and to realize uniform light amount.
  • the amount of recesses and projections is kept to 4 ⁇ m and the amount of gradation is kept small to retain the rectangular shape of the light distribution pattern and to increase the uniformity of the light distribution when the amount of gradation matches with the gradation in the second region 57b.
  • FIGS. 10(a), 10(b), and 10(c) are views each illustrating a light distribution pattern on the screen of the vehicle lamp according to the present embodiment, where FIG. 10(a) illustrates a light distribution pattern formed by light illuminated from the upper exit surface 55, FIG. 10(b) illustrates a light distribution pattern formed by light illuminated from the lower exit surface 56, and FIG. 10(c) is a view illustrating a light distribution pattern formed by the light from the second light emitting chip 42, the light distribution pattern being multiplexed with the light distribution patterns in FIG. 10(a) and FIG. 10(b) .
  • the light diffusion pattern of FIG. 10(a) is closer to a rectangular shape than that of FIG. 8(a)
  • the light distribution pattern of FIG. 10(b) is closer to a rectangular shape than that of FIG. 8(b) .
  • the light distribution pattern multiplexed with these light distribution patterns is a good pattern in that it has one high intensity band and a generally fine rectangular shape.
  • the aforementioned light distribution patterns are all formed by the light from the second light emitting chip 42 arranged in proximity to the left side (inner side of the vehicle) of the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50, in a front view seen from the vehicle front side in FIG. 2 , but the influence of the collapsed light distribution due to the off-axis aberration tends to appear in the light distribution pattern formed by the light from the second light emitting chip 42 farthest from the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50.
  • FIG. 11 illustrates a light distribution pattern formed by the light from the second light emitting chip 42 arranged at a position farthest to the left side (inner side of the vehicle) from the vertical axis (see Y axis) passing through the rear basic focal point O of the lens 50, in a front view seen from the vehicle front side in FIG. 2 .
  • the incident surface 51 is formed according to the shape as described above to suppress the off-axis aberration, and thus, the light distribution pattern has a fine rectangular shape, and the collapsed light distribution due to the off-axis aberration is greatly suppressed.
  • the radius of curvature Rvc is about 150 mm on the point M (see FIG. 4 ) side, and the radius of curvature continuously increases as the upper incident surface 52 moves vertically upward, and the radius of curvature Rvt on the outer edge side is about 300 mm, and therefore, the upper incident surface 52 has a gradually changing curved surface where an average radius of curvature obtained by averaging the radii of curvature from the point M to the outer edge is relatively small.
  • the lower incident surface 53 is linear from the point M to the lower end Rvb to suppress the influence on the low beam light distribution pattern, and the average radius of curvature obtained by averaging the radii of curvature from point M to the lower end Rvb (including a complete straight line (having the infinite radius of curvature) from point M to the lower end Rvb) is larger than the average curvature radius of the upper incident surface 52.
  • the lower incident surface 53 may have an average curvature radius which is larger than that of the upper incident surface 52 and which can suppress the influence on the low beam light distribution pattern, and the lower incident surface 53 may have a radius of curvature gradually changed in radius of curvature from the point M toward the lower end Rvb.
  • the lower incident surface 53 may be a curved surface where the radius of curvature is gradually changed in that the radius of curvature Rvc of the lower incident surface 53 on the point M (see FIG. 4 ) side is about 150 mm, the radius of curvature increases continuously as the lower incident surface 53 moves vertically downward, and the radius of curvature at the lower end Rvb is about 1000 mm.
  • the lower incident surface 53 has a larger average radius of curvature than the upper incident surface 52, and thus, in the vertical cross section of the basic optical axis (see Z axis) passing through the rear basic focal point O of the lens (see FIG. 3 ), the upper end UE (see FIG. 4 ) of the upper incident surface 52 is located forward of the lower end Rvb (see FIG. 4 ) of the lower incident surface 53.
  • the influence of the off-axis aberration can be further suppressed, and the light distribution pattern can be formed closer to a rectangular shape than the light distribution pattern illustrated in FIG. 11 .
  • a vehicle lamp comprising:
  • the vehicle lamp according to claim 1 or 2 wherein the second light emitting chips are arranged behind and vertically below the rear basic focal point of the lens, and each of the second light emitting chips is arranged such that a light emitting surface thereof is inclined vertically upward so that a light-emitting optical axis passing through a light emitting center intersects the upper incident surface.
  • the vehicle lamp according to any one of claims 1 to 5, comprising: light diffusion structures formed on the lower incident surface and the upper incident surface, the light diffusion structures being configured to diffuse light incident on the lens, wherein the light diffusion structure formed on a horizontal center side of the upper incident surface is set to diffuse more light than the light diffusion structure formed on the lower incident surface.

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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)
EP17866521.2A 2016-11-02 2017-11-02 Fahrzeuglampe Pending EP3537030A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2016215539 2016-11-02
JP2017069223A JP7000695B2 (ja) 2016-11-02 2017-03-30 車両用灯具
PCT/JP2017/039831 WO2018084269A1 (ja) 2016-11-02 2017-11-02 車両用灯具

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EP3537030A1 true EP3537030A1 (de) 2019-09-11
EP3537030A4 EP3537030A4 (de) 2020-07-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3105347A1 (fr) * 2019-12-19 2021-06-25 Valeo Vision Dispositif lumineux apte à projeter deux faisceaux lumineux pixélisés

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112019003756B4 (de) 2018-07-24 2023-08-17 Maxell, Ltd. Scheinwerfervorrichtung
JP7131250B2 (ja) * 2018-09-26 2022-09-06 市光工業株式会社 車両用灯具
JP2020102429A (ja) * 2018-12-25 2020-07-02 市光工業株式会社 車両用前照灯のレンズ及び車両用前照灯
CN109630971A (zh) * 2019-01-15 2019-04-16 江西省绿野汽车照明有限公司 汽车远光照明系统以及汽车
IT201900024226A1 (it) * 2019-12-17 2021-06-17 Osram Gmbh Lampada e corrispondente procedimento
CN212081109U (zh) * 2020-07-02 2020-12-04 惠州市弗朗特光电科技有限公司 车辆及其远近光一体的led车灯

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4782064B2 (ja) * 2007-04-10 2011-09-28 株式会社小糸製作所 車両用灯具ユニット
JP5326821B2 (ja) * 2009-05-28 2013-10-30 市光工業株式会社 車両用照明灯具
DE102011013211B4 (de) * 2011-03-05 2012-12-06 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einem Mehrfunktions-Projektionsmodul
JP6197303B2 (ja) * 2013-02-15 2017-09-20 市光工業株式会社 車両用灯具
JP6146040B2 (ja) * 2013-02-15 2017-06-14 スタンレー電気株式会社 車両用前照灯
JP2015076375A (ja) * 2013-10-11 2015-04-20 株式会社小糸製作所 車両用前照灯
JP6261276B2 (ja) * 2013-10-11 2018-01-17 株式会社小糸製作所 車両用灯具
CZ305372B6 (cs) * 2013-11-22 2015-08-19 Varroc Lighting Systems, s.r.o. Světlomet motorového vozidla
JP2016039021A (ja) * 2014-08-07 2016-03-22 株式会社小糸製作所 車両用灯具
JP6448944B2 (ja) * 2014-08-07 2019-01-09 株式会社小糸製作所 車両用灯具
JP6448250B2 (ja) * 2014-08-11 2019-01-09 株式会社小糸製作所 車両用灯具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3105347A1 (fr) * 2019-12-19 2021-06-25 Valeo Vision Dispositif lumineux apte à projeter deux faisceaux lumineux pixélisés

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JP2018078089A (ja) 2018-05-17
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WO2018084269A1 (ja) 2018-05-11
CN110088525A (zh) 2019-08-02
JP7000695B2 (ja) 2022-02-04

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