EP3540295A1 - Fahrzeug-scheinwerfer-anordnung - Google Patents

Fahrzeug-scheinwerfer-anordnung Download PDF

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Publication number
EP3540295A1
EP3540295A1 EP18161797.8A EP18161797A EP3540295A1 EP 3540295 A1 EP3540295 A1 EP 3540295A1 EP 18161797 A EP18161797 A EP 18161797A EP 3540295 A1 EP3540295 A1 EP 3540295A1
Authority
EP
European Patent Office
Prior art keywords
light
exit surface
entry
optical axis
light emitter
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.)
Granted
Application number
EP18161797.8A
Other languages
English (en)
French (fr)
Other versions
EP3540295B1 (de
Inventor
Ming-Chih Shih
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.)
TYC Brother Industrial Co Ltd
Original Assignee
TYC Brother Industrial 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 TYC Brother Industrial Co Ltd filed Critical TYC Brother Industrial Co Ltd
Priority to ES18161797T priority Critical patent/ES2965827T3/es
Priority to EP18161797.8A priority patent/EP3540295B1/de
Publication of EP3540295A1 publication Critical patent/EP3540295A1/de
Application granted granted Critical
Publication of EP3540295B1 publication Critical patent/EP3540295B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21S41/10—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
    • F21S41/20—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

Definitions

  • the disclosure relates to a light assembly, and more particularly to a vehicle light assembly.
  • a vehicle light assembly disclosed in Taiwanese Patent No. I582335 , includes a light emitter module 1 and a heat dissipation member 2.
  • the light emitter module 1 includes a lens 11 and a light emitter 12.
  • the lens 1 has a light entry surface 111, a light exit surface 112 spaced apart from the light entry surface 111 along an optical axis (L), and two opposite flank surfaces 113 connecting the light entry surface 111 to the light exit surface 112 along the optical axis (L).
  • the light emitter 12 emits light rays into the lens 11 through the light entry surface 111.
  • Some light rays (A) (see arrow A in Fig. 2 ), which beam forwardly and exit from the light exit surface 112, are concentrated to a central area in front of the vehicle light assembly.
  • Some light rays (B) (see arrow B in Fig. 2 ) are transmitted forwardly by multiple reflections between the flank surfaces 113 to exit from the light exit surface 112.
  • the light rays (B), which are reflected from a left one of the flank surfaces 113 to the light exit surface 112, are emitted forward and rightward from the light exit surface 112 after exiting the light exit surface 112.
  • the light rays (B), which are reflected from a right one of the flank surfaces 113 to the light exit surface 112, are emitted forward and leftward from the light exit surface 112 after exiting the light exit surface 112.
  • the light rays (A) and (B) project a non-continuous light pattern on an illuminated plane which forms three discrete bright regions. Because dark regions appear between adjacent bright regions, the non-continuous light pattern is unable to provide satisfactory visual effects. Furthermore, because the flank surfaces 113 are essentially utilized for light reflection, the light pattern provided by the vehicle light assembly is significantly affected by the flank surfaces 113. Hence, it is impossible to vary greatly the profile and curvature of the flank surfaces 113 for improving design varieties.
  • an object of the disclosure is to provide a vehicle light assembly that can alleviate at least one of the drawbacks of the prior art.
  • a vehicle light assembly includes at least one light emitter module.
  • the at least one light emitter module includes a lens and a light emitter disposed at a rear side of the lens.
  • the lens includes a curved light exit surface, a light entry surface, left and right reflection surfaces, and left and right flank surfaces.
  • the curved light exit surface is disposed at a front side of the lens.
  • the light entry surface is spaced apart from the light exit surface along an optical axis (L) and disposed adjacent to the light emitter.
  • the light entry surface has a first light entry portion through which the optical axis (L) passes.
  • the first light entry portion is convexed rearwardly in a direction away from the curved light exit surface.
  • the left and right reflection surfaces are respectively connected to left and right sides of the light entry surface to reflect light of the light emitter passing through the light entry surface to the curved light exit surface.
  • Each of the left and right reflection surfaces is a parabolic surface and has a virtual focal point that is disposed at a distance from the entry surface more longer than a distance of the light emitter from the entry surface and that is offset from the optical axis.
  • the left and right flank surfaces are respectively disposed at a left side of the left reflection surface and a right side of the right reflection surface, and extend forwardly to connect the curved light exit surface.
  • Each of the left and right flank surfaces has a minimum distance from the optical axis.
  • Each of the left and right reflection surfaces has a maximum distance from the optical axis. The minimum distance of each of the left and right flank surfaces is greater than the maximum distance of each of the left and right reflection surfaces.
  • a vehicle light assembly includes a light emitter module 3.
  • the light emitter module 3 includes a lens 4, a light emitter 5 disposed at a rear side of the lens 4, and a circuit board 51.
  • the lens 4 includes a curved light exit surface 42 disposed at a front side of the lens 4, a light entry surface 41, left and right reflection surfaces 43, left and right bridge surfaces 44, and left and right flank surfaces 45.
  • the light entry surface 41 is spaced apart from the curved light exit surface 42 along an optical axis (L), and is disposed adjacent to the light emitter 5.
  • the light entry surface 41 has a first light entry portion 411, a base portion 410, and a second light entry portion 412.
  • the optical axis (L) passes through the first light entry portion 411.
  • the first light entry portion 411 is convexed rearwardly in a direction away from the curved light exit surface 42.
  • the base portion 410 is flat and disposed around the optical axis (L) rearwardly of the first light entry portion 411.
  • the second light entry portion 412 is disposed annularly around the optical axis (L) and is connected between an annular inner periphery of the base portion 410 and the first light entry portion 411.
  • the first and second light entry portions 411, 412 cooperatively bound a light entry hole 413.
  • the light entry hole 413 has an opening 414 that faces rearward and that is formed in the base portion 410.
  • the light entry hole 413 is immediately disposed at the front of the light emitter 5
  • the first light entry portion (411) is immediately disposed at the front of the light entry hole 413.
  • the first light entry portion 411 is convexed rearwardly into the light entry hole 413.
  • the base portion 410 is close to the light emitter 5.
  • the curved light exit surface 42 has an exit surface top side 42a, an exit surface bottom side 42b, an exit surface left side 42c, and an exit surface right side 42d (see Figs. 3 and 8 ).
  • the curved light exit surface 42 protrudes arcuately and forwardly from the exit surface top and bottom sides 42a, 42b to a region disposed midway between the exit surface top and bottom sides 42a, 42b so that the exiting light rays can be directed forward and downward.
  • the curved light exit surface 42 indents rearwardly and arcuately from the exit surface left and right sides 42c, 42d to a region disposed midway between the exit surface left and right sides 42c, 42d so that the exiting light rays slant slightly leftward and rightward to increase the range of illumination in a left-right direction.
  • the left and right reflection surfaces 43 are respectively connected to left and right sides of the light entry surface 41 to reflect light rays of the light emitter 5 incident on the light entry surface 41 toward the curved light exit surface 42. Particularly, the left and right reflection surfaces 43 are respectively connected to left and right sides of the base portion 410. Each of left and right reflection surfaces 43 is a parabolic surface. The left or right reflection surface 43 should not be large. The length of the left or right reflection surface 43 in a front-rear direction is shorter than that of the left or right flank surface 45.
  • the left and right bridge surfaces 44 respectively extend leftward and rightward from the left and right reflection surfaces 43 and connect rear ends of the left and right flank surfaces 45.
  • the left and right flank surfaces 45 are respectively disposed at the left side of the left reflection surface 43 and the right side of the right reflection surface 43 and extend forwardly from the respective left and right bridge surfaces 44 to connect the curved light exit surface 42.
  • a minimum distance (d1) of each of the left and right flank surfaces 45 from the optical axis (L) is greater than a maximum distance (d2) of each of the left and right reflection surfaces 43 from the optical axis (L).
  • the light emitter 5 such as an LED, is mounted on the circuit board 51, and both of them are located rearward of the base portion 410 of the light entry surface 41.
  • the light emitter 5 faces the first light entry portion 411 and the opening 414 of the light entry hole 413.
  • the light emitter 5 has a center located at the optical axis (L), and the light emitter module 3 functions as a high beam light bulb.
  • the light emitter module 3 functions as a low beam light bulb.
  • the first light entry portion 411 which protrudes rearward, facilitates converging of the light rays after refraction.
  • the left and right reflection surfaces 43 reflect the light rays to be closer to the optical axis (L) rather than toward the left and right flank surfaces 45. Afterwards, the light rays exit the curved light exit surface 42.
  • the left reflection surface 43 reflects the light rays toward the curved light exit surface 42 at the left side of the optical axis (L).
  • the right reflection surface 43 reflects the light rays to the curved light exit surface 42 at the right side of the optical axis (L).
  • the curved light exit surface 42 can generate an illumination area sufficiently large to provide a light distribution pattern and brightness required by vehicle lighting regulations. Because the vehicle light assembly of the present disclosure can enable the exiting light rays to provide uniformly and continuously distributed lighting regions, occurrence of dark regions that interrupt or discontinue the light distribution pattern can be avoided.
  • the light rays of the light emitter 5 are reflected by the left and right reflection surfaces 43, the light rays almost do not travel to the left and right flank surfaces 45.
  • the left and right flank surfaces 45 are not main functional surfaces for reflecting the light rays and controlling the light distribution pattern. Accordingly, the left and right flank surfaces 45 may be provided with other design varieties, such as different extension directions, different curvatures, different slopes, different embossed patterns, etc., without affecting the desired light distribution pattern.
  • the left and right reflection surfaces 43 are parabolic surfaces having respective virtual focal points (F) disposed at a same location that has a distance from the entry surface 41 more longer than a distance of the light emitter 5 from the entry surface 41 and that is offset from the optical axis (L).
  • the virtual focal point (F) is at the rear side of the light emitter 5.
  • the lens 4 will need an increased front-rear length (i.e., an increased distance between the base portion 410 and the curved light exit surface 42), which is not beneficial for miniaturization of the lens 4.
  • the virtual focal point (F) of the left and right reflection surfaces 43 is offset from the optical axis (L) and disposed at the distance from the entry surface 41 more longer than the distance of the light emitter 5 from the entry surface 41, the front-rear length of the lens 4 can be shortened for minimizing the lens 4.
  • the optical axis (L) intersects the opening 414 at an intersection point (C).
  • the first light entry portion 411 of the light entry surface 41 has a focal point located at the intersection point (C).
  • the curved light exit surface 42 has a focal point located at the intersection point (C) or located in vicinity of the intersection point (C).
  • a vehicle light assembly includes a plurality of the light emitter modules 3 juxtaposed to each other.
  • One of the left and right flank surfaces 45 of each of the juxtaposed light emitter modules 3 faces one of left and right the flank surfaces 45 of the other one of the juxtaposed light emitter modules 3.
  • the light emitter modules 3 are, but not limited to, juxtaposed to each other in a row. Every two adjacent light emitter modules 3 may be spaced apart from each other, or may adjoin each other. Further, at least one of the light emitter modules 3 functions as a high beam light bulb, and at least one of the light emitter modules 3 functions as a low beam light bulb. Therefore, the vehicle light assembly of the present disclosure can be controlled to provide the low beam function or high beam function. In other embodiments, all of the light emitter modules 3 may function as high or low beam light bulbs.
  • the lenses 4 of the light emitter modules 3 can be juxtaposed to each other by adjoining the left and right flank surfaces 45 of every two adjacent ones of the lenses 4.
  • a vehicle light assembly includes a plurality of the light emitter modules 3 juxtaposed to each other along a line and are integrally formed as one piece.
  • the front-rear lengths of the light emitter modules 3 are different.
  • a vehicle light assembly includes a plurality of the light emitter modules 3 are integrally interconnected and arranged to have an L-shaped configuration.

Landscapes

  • 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)
EP18161797.8A 2018-03-14 2018-03-14 Fahrzeug-scheinwerfer-anordnung Active EP3540295B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES18161797T ES2965827T3 (es) 2018-03-14 2018-03-14 Conjunto de faros delanteros para vehículos
EP18161797.8A EP3540295B1 (de) 2018-03-14 2018-03-14 Fahrzeug-scheinwerfer-anordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18161797.8A EP3540295B1 (de) 2018-03-14 2018-03-14 Fahrzeug-scheinwerfer-anordnung

Publications (2)

Publication Number Publication Date
EP3540295A1 true EP3540295A1 (de) 2019-09-18
EP3540295B1 EP3540295B1 (de) 2023-09-20

Family

ID=61683592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18161797.8A Active EP3540295B1 (de) 2018-03-14 2018-03-14 Fahrzeug-scheinwerfer-anordnung

Country Status (2)

Country Link
EP (1) EP3540295B1 (de)
ES (1) ES2965827T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021130729B3 (de) 2021-11-24 2023-01-26 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
EP4386256A1 (de) * 2022-12-13 2024-06-19 T.Y.C. Brother Industrial Co., Ltd. Optische linse für ein fahrzeug und optische linsenanordnung damit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767172A (en) * 1983-01-28 1988-08-30 Xerox Corporation Collector for an LED array
DE102010018119A1 (de) * 2010-04-24 2011-10-27 Hella Kgaa Hueck & Co. Optikelement für eine Beleuchtungseinrichtung eines Fahrzeugs
DE202013101509U1 (de) * 2013-04-09 2013-04-23 Fu An Industrial Co., Ltd. Optische Linse für Streifenbeleuchtungen
DE202014003078U1 (de) * 2014-04-10 2014-04-17 Osram Gmbh Optisches Element und Beleuchtungseinrichtung mit optischem Element
EP2799762A2 (de) * 2013-04-29 2014-11-05 Automotive Lighting Reutlingen GmbH Lichtmodul für einen Kraftfahrzeugscheinwerfer
JP2015111499A (ja) * 2013-12-06 2015-06-18 スタンレー電気株式会社 車両用前照灯
EP3062013A1 (de) * 2015-02-26 2016-08-31 T.Y.C. Brother Industrial Co., Ltd. Fahrzeuglampe
WO2017185118A1 (de) * 2016-04-29 2017-11-02 Zkw Group Gmbh Beleuchtungseinheit für einen kraftfahrzeugscheinwerfer zum erzeugen eines lichtbündels mit hell-dunkel-grenze

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767172A (en) * 1983-01-28 1988-08-30 Xerox Corporation Collector for an LED array
DE102010018119A1 (de) * 2010-04-24 2011-10-27 Hella Kgaa Hueck & Co. Optikelement für eine Beleuchtungseinrichtung eines Fahrzeugs
DE202013101509U1 (de) * 2013-04-09 2013-04-23 Fu An Industrial Co., Ltd. Optische Linse für Streifenbeleuchtungen
EP2799762A2 (de) * 2013-04-29 2014-11-05 Automotive Lighting Reutlingen GmbH Lichtmodul für einen Kraftfahrzeugscheinwerfer
JP2015111499A (ja) * 2013-12-06 2015-06-18 スタンレー電気株式会社 車両用前照灯
DE202014003078U1 (de) * 2014-04-10 2014-04-17 Osram Gmbh Optisches Element und Beleuchtungseinrichtung mit optischem Element
EP3062013A1 (de) * 2015-02-26 2016-08-31 T.Y.C. Brother Industrial Co., Ltd. Fahrzeuglampe
TWI582335B (zh) 2015-02-26 2017-05-11 T Y C Brother Industrial Co Ltd Lights
WO2017185118A1 (de) * 2016-04-29 2017-11-02 Zkw Group Gmbh Beleuchtungseinheit für einen kraftfahrzeugscheinwerfer zum erzeugen eines lichtbündels mit hell-dunkel-grenze

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021130729B3 (de) 2021-11-24 2023-01-26 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
US11719405B2 (en) 2021-11-24 2023-08-08 HELLA GmbH & Co. KGaA Lighting device for vehicles
EP4386256A1 (de) * 2022-12-13 2024-06-19 T.Y.C. Brother Industrial Co., Ltd. Optische linse für ein fahrzeug und optische linsenanordnung damit

Also Published As

Publication number Publication date
ES2965827T3 (es) 2024-04-17
EP3540295B1 (de) 2023-09-20

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