EP3527875A1 - Phare de véhicule automobile pourvu d'un condensateur plan - Google Patents

Phare de véhicule automobile pourvu d'un condensateur plan Download PDF

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Publication number
EP3527875A1
EP3527875A1 EP18156939.3A EP18156939A EP3527875A1 EP 3527875 A1 EP3527875 A1 EP 3527875A1 EP 18156939 A EP18156939 A EP 18156939A EP 3527875 A1 EP3527875 A1 EP 3527875A1
Authority
EP
European Patent Office
Prior art keywords
light
glass sheet
motor vehicle
vehicle headlight
headlight according
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.)
Withdrawn
Application number
EP18156939.3A
Other languages
German (de)
English (en)
Inventor
Lukas Taudt
Nina Brauner
Mathias SCHRAGL
Christoph Längauer
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.)
ZKW Group GmbH
Original Assignee
ZKW Group GmbH
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 ZKW Group GmbH filed Critical ZKW Group GmbH
Priority to EP18156939.3A priority Critical patent/EP3527875A1/fr
Priority to PCT/EP2019/051435 priority patent/WO2019158319A1/fr
Priority to JP2020541891A priority patent/JP7019824B2/ja
Priority to EP19705093.3A priority patent/EP3752765B1/fr
Priority to KR1020207023532A priority patent/KR102429313B1/ko
Priority to US16/969,789 priority patent/US11371671B2/en
Priority to CN201980013501.4A priority patent/CN111699344B/zh
Publication of EP3527875A1 publication Critical patent/EP3527875A1/fr
Withdrawn legal-status Critical Current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
    • F21S41/40—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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/10—Protection of lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a motor vehicle headlight with a burning glass sheet, which is arranged between a lighting unit with at least one light source and a projection optics, and which has a light exit opening for light emitted from the light unit forward, wherein the outgoing light from the light unit by means of the projection optics Photograph is projected into the traffic space and the burning glass sheet is located outside the focal plane of the projection optics.
  • a burning glass sheet is placed in front of a lighting unit, e.g. an LED light source module, wherein the burning glass sheet has a light exit opening for the light emitted from the light unit forward, occurs as a disturbing side effect at the edges of the most punched out of a sheet of light exit light scattered light, which affects the projected onto the street photograph undesirable.
  • a lighting unit e.g. an LED light source module
  • the burning glass sheet has a light exit opening for the light emitted from the light unit forward, occurs as a disturbing side effect at the edges of the most punched out of a sheet of light exit light scattered light, which affects the projected onto the street photograph undesirable.
  • the term "burning glass sheet" in this specification is used for a cover which is used for avoiding the burning effect of the sun, which cover need not necessarily be made of metallic sheet. Rather, the cover can also be made of plastics and the firing glass sheet can, whether made of metal or plastic, have a radiation-absorbing coating, so that light or heat radiation are absorbed on the
  • outgoing light from the light unit or light source of the headlight is no longer reflected at the border of the light exit opening of the combustion glass sheet in the direction of the projection optics, whereby unwanted scattered light can be significantly reduced in the projected onto the street photo.
  • the border of the light exit opening of the Brennglasbleches as deflecting at least partially has a beveled edge, wherein over the thickness of the firing plate extending bevel in the direction of the optical axis and the lighting unit is inclined at a predetermined angle.
  • Particularly inexpensive and easy to manufacture is an embodiment in which the border of the light exit opening of the firing plate is at least partially angled in the direction of the light unit and inclined against the optical axis at a predetermined angle in an angling.
  • deflecting structures are designed in the form of a plurality of prongs for deflecting interfering peripheral rays which are received by the lighting unit. It has proven to be expedient if 20 to 400, in particular 50 to 200 spikes are provided on one side of the border in the longitudinal extension of the light exit opening.
  • the invention is particularly useful in a headlamp, in which an intent optical system is arranged in the beam path between the light source and the burning glass sheet.
  • the firing glass sheet is arranged in front of the focal plane of the projection lens.
  • the invention also offers particular advantages when the light source comprises a number of LEDs arranged in a matrix.
  • the glass sheet metal is made of metal.
  • the burning glass sheet is made of plastic.
  • the firing glass sheet has a radiation-absorbing coating to absorb light or heat radiation and not to reflect.
  • a pig launcher has a variety of other, not shown here components, such as adjustment and adjustment, electrical supply means and much more. If the term "headlight” is used in connection with the invention, this term should also include individual projection modules, which may also be included in combination in a superordinate headlight.
  • the headlight 1 has a light unit 2, in which a number of LEDs 5 is arranged in a matrix as light source 3 on a printed circuit board 4 .
  • the LEDs 5 are preceded by an optical attachment 6 , which is held by a holder 7 here on the circuit board 4.
  • the LEDs 5 emit their light into the light-conducting attachment optics 6, which emits a desired light pattern to the front. This light pattern is projected into the traffic space by means of projection optics 8, which in the present case is an integral lens.
  • projection optics 8 which in the present case is an integral lens.
  • a combustion glass sheet 9 is arranged, in which a light exit opening 10 is formed.
  • Fig. 2 it can be seen that the individual parts are accommodated or held in a housing 11 which is shown only roughly schematically here.
  • Fig. 1 and 2 illustrated headlight 1 corresponds to the prior art with regard to the execution of its firing glass sheet 9 and it will be explained below with reference to a principal ray path, the problem of unwanted scattered light occurring here.
  • the beam path of the light emitted by the light unit 2 is in Fig. 2 denoted by L e .
  • This light or the beam path L e extends from the front side of the attachment optics 6 through the light exit opening 10 of the combustion glass sheet 9 and through the projection optics 8 into the traffic space in front of the motor vehicle.
  • Sunlight or sun rays which in this example are incident at an angle of approximately 45 °, are in Fig. 2 denoted by L s .
  • the incident sunbeams are focused by the projection optics 8 and, in the absence of the burning glass sheet 9, would impinge concentratedly on a focal spot on the front of the attachment optics where they could cause damage, namely by overheating of components such as the holder 7, often Made of heat-sensitive plastic. Such overheating can not only cause damage, such as warping of adjusted elements, but even local fires and vehicle fires.
  • Fig. 2 are the light rays, which would reach without the burning glass sheet 9 to the light unit 2, denoted by L S '.
  • the burning glass sheet 9 does not affect those rays L e , which are to produce the light image on the road, but go in practice of the never perfect intent optics 6 also intrinsically undesirable marginal rays L R , which at the substantially horizontally extending inner boundary surface 12th the edge 13 of the light exit opening 10 are deflected in the direction of the projection optics 8 as scattered light L RS and reach into areas of the light image, where they cause unwanted artifacts.
  • the invention now proposes, at least in some areas, forming deflection structures on the border of the light exit opening of the combustion glass sheet, which lead to a reduction of the scattered light arising at the border.
  • Fig. 3 is in the burning glass sheet 9, the light exit opening 10 and the edge 13 is formed so that the desired light image generating beam path is not trimmed.
  • the Fig. 4 it can now be seen that the border 13 is angled at an angle relative to the optical axis a , so that an angled edge region 14 is created.
  • This bending of the border 13 does not necessarily have to be made over the entire border, it is usually sufficient in some areas angling, preferably in the lower part of the border. Whether the bend extends in the direction of the lighting unit 2 or in the direction of the projection optical system 8 is substantially irrelevant, as will be explained in greater detail below.
  • the Fig. 4 recognizes the principle underlying the invention, which consists in that of the light unit 2 and its attachment optics 6 incident edge beams L R no longer reflected at the now no longer horizontally extending inner boundary surface 12 of the border 13 of the light exit opening 10 in the direction of the projection optics but in the present case to the rear in the direction of the light unit. Unwanted light artifacts in the light image due to the marginal rays L R are thereby avoided.
  • the burning glass sheet 9 unlike diaphragms, which define borders of the light image and therefore should be sharply imaged, not in the focal plane of the projection optics 8 but outside, in a meaningful way before this.
  • Limitations of the illumination image are determined by the light unit 2 or the attachment optics 6 and not by the light exit opening 10 of the combustion glass sheet 9.
  • An example of a diaphragm in the focal plane of the projection optics can be found in the EP 2 742 282 B1 the applicant.
  • a light exit opening 10 is formed with a border 13 in the burning glass sheet 9, said border has in its upper and in its lower portion a plurality of prongs 15 for deflecting disturbing, from the light unit 2 ein GmbH edge beams L R.
  • a border 13 in the burning glass sheet 9
  • prongs 15 for deflecting disturbing, from the light unit 2 ein GmbH edge beams L R.
  • Fig. 7 considered speaking of a wavy edge that has serrations 15 and grooves 16 alternately.
  • the Fig. 5 to 7 are each two of the light unit 2 ein GmbHde unwanted marginal rays L R drawn and two deflected at the spikes 15 or scattered light beams L A.
  • the term “spikes” not necessarily “pointed” surveys but very generally include surveys, typically on a longitudinal side of the light exit opening 20 to 400, usually 50 to 200 such surveys are provided.
  • the approximately rectangular light exit opening 10 of the burning glass sheet 9 80 mm wide and 18 mm high and the prongs 15 a height and width between 0.5 up to 2 mm.
  • light distribution - Fig. 8 - or for the same headlight without spikes 15 at the border of the light exit opening 10 - Fig. 9 One recognizes scattered light regions above and below the desired light image, of which the upper region is particularly pronounced.
  • training with teeth on the border - Fig. 8 - The unwanted scattered light reaches a maximum light intensity of 162 cd, in a training without jags, however, 323 cd.
  • Fig. 10a shows again in a detail the Fig. 2 the unwanted reflection of marginal rays LR as deflected light rays L A forward in the direction of the projection optics.
  • Fig. 10b shows an embodiment in which the border of the combustion glass sheet 9 as a deflecting at least partially has a beveled edge 17 , wherein over the thickness of the firing plate 9 extending bevel in the direction of the optical axis a and the lighting unit is inclined at a predetermined angle. It is in the following Fig. 10c the inclination of this angle opposite to that Fig. 10b , but in both cases, the incoming marginal rays L R are kept away from the projection optics as deflected light beams L A.
  • Fig. 10d and Fig. 10e show analogously to Fig. 4 Angled edge regions, wherein the bend 18 in Fig. 10d in the direction of the light unit runs backwards, in Fig. 10e but forward to the projection optics.
  • the effect of the deflection structure is comparable in both cases and similar to the bevels of FIGS Fig. 10b and Fig. 10c ,
  • FIG. 10f an embodiment in which the border is at least partially tapered in the manner of a cutting edge 19 , whereby also here the effect of a reduction of the scattered light is evident, since there is no area, which Edge rays L R could lead as deflected light rays L A in the direction of the projection optics, but a bevelled edge 17 as in the embodiment according to Fig. 10c is effective.
  • a special light unit 2 has been shown and described, namely a lighting unit for a so-called "matrix headlight” with a larger number of LEDs and a front optics with optical fibers, it should be clear that the invention by no means to a certain lighting unit is limited. It is neither a front optics nor a matrix-like arrangement of LEDs for the realization of the invention required, as well as other bulbs instead of LEDs, such as laser diodes with light converters, these can also be used with scanning laser beams, gas discharge lamps and the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP18156939.3A 2018-02-15 2018-02-15 Phare de véhicule automobile pourvu d'un condensateur plan Withdrawn EP3527875A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP18156939.3A EP3527875A1 (fr) 2018-02-15 2018-02-15 Phare de véhicule automobile pourvu d'un condensateur plan
PCT/EP2019/051435 WO2019158319A1 (fr) 2018-02-15 2019-01-22 Projecteur de véhicule automobile comprenant un écran de protection pour la protection contre le rayonnement solaire incident
JP2020541891A JP7019824B2 (ja) 2018-02-15 2019-01-22 入射する太陽光線を遮光する遮光絞りを備えた自動車両投光装置
EP19705093.3A EP3752765B1 (fr) 2018-02-15 2019-01-22 Phare de véhicule automobile a écran contre le rayonnement solaire entrant
KR1020207023532A KR102429313B1 (ko) 2018-02-15 2019-01-22 입사 태양 복사를 차폐하기 위한 차폐 스크린을 포함한 자동차 헤드램프
US16/969,789 US11371671B2 (en) 2018-02-15 2019-01-22 Motor vehicle headlamp having a shielding screen for shielding incident solar radiation
CN201980013501.4A CN111699344B (zh) 2018-02-15 2019-01-22 带有用于遮蔽进入的太阳辐射的遮光挡板的机动车大灯

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18156939.3A EP3527875A1 (fr) 2018-02-15 2018-02-15 Phare de véhicule automobile pourvu d'un condensateur plan

Publications (1)

Publication Number Publication Date
EP3527875A1 true EP3527875A1 (fr) 2019-08-21

Family

ID=61226477

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18156939.3A Withdrawn EP3527875A1 (fr) 2018-02-15 2018-02-15 Phare de véhicule automobile pourvu d'un condensateur plan
EP19705093.3A Active EP3752765B1 (fr) 2018-02-15 2019-01-22 Phare de véhicule automobile a écran contre le rayonnement solaire entrant

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19705093.3A Active EP3752765B1 (fr) 2018-02-15 2019-01-22 Phare de véhicule automobile a écran contre le rayonnement solaire entrant

Country Status (6)

Country Link
US (1) US11371671B2 (fr)
EP (2) EP3527875A1 (fr)
JP (1) JP7019824B2 (fr)
KR (1) KR102429313B1 (fr)
CN (1) CN111699344B (fr)
WO (1) WO2019158319A1 (fr)

Cited By (2)

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FR3105350A1 (fr) * 2019-12-18 2021-06-25 Valeo Vision Module lumineux pour véhicule automobile.
FR3105351A1 (fr) * 2019-12-18 2021-06-25 Valeo Vision Module lumineux de véhicule automobile.

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DE102020101038A1 (de) 2020-01-17 2021-07-22 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Lichtemittierendes Bauelement
JP2022060094A (ja) * 2020-10-02 2022-04-14 株式会社小糸製作所 灯具ユニット
WO2023276256A1 (fr) * 2021-06-30 2023-01-05 京セラ株式会社 Dispositif d'éclairage
JP7113999B1 (ja) * 2021-06-30 2022-08-05 京セラ株式会社 照明装置
WO2023001950A1 (fr) * 2021-07-21 2023-01-26 Osram Opto Semiconductors Gmbh Dispositif d'éclairage à base de diode électroluminescente
JP2023028932A (ja) * 2021-08-20 2023-03-03 株式会社小糸製作所 描画用灯具
FR3140928A1 (fr) * 2022-10-04 2024-04-19 Valeo Vision Module lumineux comportant un boîtier en plastique muni d’une pièce de protection du boîtier en plastique contre l’effet de rayons lumineux focalisés

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EP2742282A1 (fr) 2011-09-06 2014-06-18 Koninklijke Philips N.V. Luminaire orienté obliquement
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FR3105350A1 (fr) * 2019-12-18 2021-06-25 Valeo Vision Module lumineux pour véhicule automobile.
FR3105351A1 (fr) * 2019-12-18 2021-06-25 Valeo Vision Module lumineux de véhicule automobile.

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WO2019158319A1 (fr) 2019-08-22
KR20200110680A (ko) 2020-09-24
EP3752765B1 (fr) 2022-10-26
CN111699344B (zh) 2022-09-30
EP3752765A1 (fr) 2020-12-23
KR102429313B1 (ko) 2022-08-04
CN111699344A (zh) 2020-09-22
JP2021512466A (ja) 2021-05-13
JP7019824B2 (ja) 2022-02-15
US20210003263A1 (en) 2021-01-07
US11371671B2 (en) 2022-06-28

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