EP3540295B1 - Fahrzeug-scheinwerfer-anordnung - Google Patents

Fahrzeug-scheinwerfer-anordnung Download PDF

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Publication number
EP3540295B1
EP3540295B1 EP18161797.8A EP18161797A EP3540295B1 EP 3540295 B1 EP3540295 B1 EP 3540295B1 EP 18161797 A EP18161797 A EP 18161797A EP 3540295 B1 EP3540295 B1 EP 3540295B1
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EP
European Patent Office
Prior art keywords
light
exit surface
light emitter
entry
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.)
Active
Application number
EP18161797.8A
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English (en)
French (fr)
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EP3540295A1 (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
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TYC Brother Industrial Co Ltd
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Priority to EP18161797.8A priority Critical patent/EP3540295B1/de
Priority to ES18161797T priority patent/ES2965827T3/es
Publication of EP3540295A1 publication Critical patent/EP3540295A1/de
Application granted granted Critical
Publication of EP3540295B1 publication Critical patent/EP3540295B1/de
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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 invention relates to a vehicle light assembly, as known from DE 10 2010 018 119 A1 or DE 20 2013 101 509 U1 .
  • 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 is to provide a vehicle light assembly that can alleviate at least one of the drawbacks of the prior art.
  • a vehicle light assembly with the features of indenpendent claim 1 is provided.
  • 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 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 invention 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 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 focal point (F) is at the rear side of the light emitter 5.
  • the focal point (F) of the left and right reflection surfaces 43 falls to the location of the light emitter 5, or between the first light entry portion 411 of the light entry surface 41 and the light emitter 5 (i.e., at the front side of the light emitter 5), in order to achieve the desired optical effects, the light entry surface 41 will have to be located more forwardly and the curved light exit surface 42 will have to be adjusted and shifted forwardly. That is to say, 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 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 invention 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.

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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)

Claims (10)

  1. Fahrzeugbeleuchtungsanordnung, die folgendes aufweist
    mindestens ein Lichtemittermodul (3) mit einer Linse (4) und einem Lichtemitter (5), der an einer Rückseite der Linse (4) ausgebildet ist, wobei die Linse (4) folgendes aufweist
    eine gekrümmte Lichtaustrittsfläche (42), die derart ausgebildet ist, dass sie an einer Vorderseite der Linse (4) angeordnet ist,
    eine Lichteintrittsfläche (41), die von der Lichtaustrittsfläche (42) entlang einer optischen Achse (L) beabstandet und derart ausgebildet ist, dass sie dem Lichtemitter (5) benachbart ist, wobei die Lichteintrittsfläche (41) einen ersten Lichteintrittsabschnitt (411) aufweist, durch den die optische Achse (L) verläuft,
    linke und rechte Reflexionsflächen (43), die jeweils mit der linken und rechten Seite der Lichteintrittsfläche (41) verbunden sind, um Licht des Lichtemitters (5), das durch die Lichteintrittsfläche (41) hindurchgeht, zu der gekrümmten Lichtaustrittsfläche (42) zu reflektieren, wobei jede der linken und rechten Reflexionsflächen (43) eine Parabolfläche ist und einen Brennpunkt (F) aufweist, der in einem Abstand von der Eintrittsfläche (41) ausgebildet ist, der größer ist als ein Abstand des Lichtemitters (5) von der Eintrittsfläche (41) und der von der optischen Achse (L) versetzt ist, und
    eine linke und eine rechte Flankenfläche (45), die jeweils an einer linken Seite der linken Reflexionsfläche (43) und einer rechten Seite der rechten Reflexionsfläche (43) ausgebildet sind und sich nach vorne erstrecken, um die gekrümmte Lichtaustrittsfläche (42) zu verbinden, wenn sie in der oberen Schnittansicht der Linse betrachtet wird,
    dadurch gekennzeichnet, dass:
    jede der linken und rechten Flankenflächen (45) einen minimalen Abstand (d1) von der optischen Achse (L) aufweist, jede der linken und rechten Reflexionsflächen (43) einen maximalen Abstand (d2) von der optischen Achse (L) aufweist, wobei der minimale Abstand (d1) jeder der linken und rechten Flankenflächen (45) größer als der maximale Abstand (d2) jeder der linken und rechten Reflexionsflächen (43) ist; und
    wobei der erste Lichteintrittsabschnitt (411) nach hinten in einer Richtung weg von der gekrümmten Lichtaustrittsfläche (42) konvex ist, wenn er in einer oberen Schnittansicht der Linse betrachtet wird;
    wobei die Lichteintrittsfläche (41) ferner einen Basisabschnitt (410) und einen zweiten Lichteintrittsabschnitt (412) aufweist, wobei der Basisabschnitt (410) derart ausgebildet ist, dass er um die optische Achse (L) herum hinter dem ersten Lichteintrittsabschnitt (411) angeordnet ist, wobei der zweite Lichteintrittsabschnitt (412) zwischen einer ringförmigen inneren Peripherie des Basisabschnitts (410) und dem ersten Lichteintrittsabschnitt (411) verbunden ist, wobei der erste und der zweite Lichteintrittsabschnitt (411, 412) zusammenwirkend ein Lichteintrittsloch (413) begrenzen; und
    wobei der Brennpunkt (F) jeder der linken und rechten Reflexionsflächen (43) an einer Rückseite des Lichtemitters (5) liegt.
  2. Fahrzeugbeleuchtungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die gekrümmte Lichtaustrittsfläche (42) eine Austrittsflächenoberseite, eine Austrittsflächenunterseite, eine linksseitige Austrittsfläche und eine rechtsseitige Austrittsfläche aufweist, wobei sich die gekrümmte Lichtaustrittsfläche von der Austrittsflächenoberseite und der Austrittsflächenunterseite bogenförmig und nach vorne zu einem Bereich erhebt, der in der Mitte zwischen der Austrittsflächenoberseite und der Austrittsflächenunterseite liegt.
  3. Fahrzeugbeleuchtungsanordnung nach Anspruch 2, dadurch gekennzeichnet, dass die gekrümmte Lichtaustrittsfläche (42) von der linksseitigen und rechtsseitigen Austrittsfläche nach hinten und bogenförmig zu einem in der Mitte zwischen der linken und rechten Austrittsfläche liegenden Bereich verlaufend eintaucht.
  4. Fahrzeugbeleuchtungsanordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Lichtemitter (5) ein auf der optischen Achse (L) liegendes Zentrum aufweist, wobei das mindestens eine Lichtemittermodul (3) als Fernlichtlampe fungiert.
  5. Fahrzeugbeleuchtungsanordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Lichtemitter (5) eine an der optischen Achse (L) liegende Kante aufweist, wobei das mindestens eine Lichtemittermodul (3) als Abblendlichtlampe fungiert.
  6. Fahrzeugbeleuchtungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Lichtemittermodul mehrere nebeneinander angeordnete Lichtemittermodule (3) aufweist, wobei eine der linken und rechten Flankenflächen (45) jedes der Lichtemitter-Module (3) einer der linken und rechten Flankenflächen (45) des anderen der Lichtemitter-Module (3) gegenüberliegt.
  7. Fahrzeugbeleuchtungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Lichtemittermodul mehrere nebeneinander angeordnete Lichtemittermodule (3) aufweist, wobei mindestens eines der Lichtemittermodule (3) als Fernlichtlampe und mindestens eines der Lichtemittermodule (3) als Abblendlichtlampe fungiert.
  8. Fahrzeugbeleuchtungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Lichtemittermodul (3) mehrere nebeneinander angeordnete Lichtemittermodule (3) aufweist, die alle als Fern- oder Abblendlichtlampen fungieren.
  9. Fahrzeugbeleuchtungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass:
    die Lichteintrittsfläche (41) ferner ein Lichteintrittsloch (413) unmittelbar an einer Vorderseite des Lichtemitters (5) aufweist,
    der erste Lichteintrittsabschnitt (411) unmittelbar an einer Vorderseite des Lichteintrittslochs (413) ausgebildet ist,
    die optische Achse (L) durch das Lichteintrittsloch (413) und den ersten Lichteintrittsabschnitt (411) verläuft, und
    der erste Lichteintrittsabschnitt (411) nach hinten in das Lichteintrittsloch (413) hinein gewölbt ist.
  10. Fahrzeugbeleuchtungsanordnung nach Anspruch 9,
    dadurch gekennzeichnet, dass das Lichteintrittsloch (413) eine Öffnung (414) aufweist, die in dem Basisabschnitt (410) ausgebildet ist, wobei die linke und die rechte Reflexionsfläche (43) mit der linken und der rechten Seite des Basisabschnitts (410) verbunden sind, wobei der Basisabschnitt (410) nahe an dem Lichtemitter (5) liegt.
EP18161797.8A 2018-03-14 2018-03-14 Fahrzeug-scheinwerfer-anordnung Active EP3540295B1 (de)

Priority Applications (2)

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

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

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ES (1) ES2965827T3 (de)

Families Citing this family (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

Family Cites Families (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
DE102010018119B4 (de) * 2010-04-24 2023-06-22 HELLA GmbH & Co. KGaA Optikelement für eine Beleuchtungseinrichtung eines Fahrzeugs
DE202013101509U1 (de) * 2013-04-09 2013-04-23 Fu An Industrial Co., Ltd. Optische Linse für Streifenbeleuchtungen
DE102013207845A1 (de) * 2013-04-29 2014-10-30 Automotive Lighting Reutlingen Gmbh Lichtmodul für einen Kraftfahrzeugscheinwerfer
JP6241875B2 (ja) * 2013-12-06 2017-12-06 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
TWI582335B (zh) 2015-02-26 2017-05-11 T Y C Brother Industrial Co Ltd Lights
AT518557B1 (de) * 2016-04-29 2018-04-15 Zkw Group Gmbh Beleuchtungseinheit für einen Kraftfahrzeugscheinwerfer zum Erzeugen eines Lichtbündels mit Hell-Dunkel-Grenze

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ES2965827T3 (es) 2024-04-17
EP3540295A1 (de) 2019-09-18

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