EP1362740A2 - Feu de véhicule - Google Patents

Feu de véhicule Download PDF

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Publication number
EP1362740A2
EP1362740A2 EP03101294A EP03101294A EP1362740A2 EP 1362740 A2 EP1362740 A2 EP 1362740A2 EP 03101294 A EP03101294 A EP 03101294A EP 03101294 A EP03101294 A EP 03101294A EP 1362740 A2 EP1362740 A2 EP 1362740A2
Authority
EP
European Patent Office
Prior art keywords
reflectors
reflector
vehicle lamp
light sources
lamp 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.)
Granted
Application number
EP03101294A
Other languages
German (de)
English (en)
Other versions
EP1362740B1 (fr
EP1362740A3 (fr
Inventor
Elmar Dünschede
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1362740A2 publication Critical patent/EP1362740A2/fr
Publication of EP1362740A3 publication Critical patent/EP1362740A3/fr
Application granted granted Critical
Publication of EP1362740B1 publication Critical patent/EP1362740B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]

Definitions

  • the invention relates to a vehicle lamp, consisting essentially of a plurality of light sources and a plurality of reflectors in which the light sources have a radiation characteristic distributed around a respective optical axis have, each illuminating at least one assigned reflector, so that the light incident on the reflectors at a deflection angle is reflected in the direction of a main emission direction.
  • Vehicle lights especially for motor vehicles, are increasingly in housed systems that are crystal clear or partially clear, i.e. optical have inactive cover plates or light exit surfaces.
  • crystal clear or partially clear i.e. optical have inactive cover plates or light exit surfaces.
  • the use of a variety is used in the latest developments of miniaturized light sources in connection with a reflector ensemble, proposed in particular for rear or brake lights.
  • the light sources are arranged in a row, with each being in the focal point of an associated paraboloidal reflector section. Thereby they each generate an approximately parallel beam of light in the core area of the respective reflector. It is important that one is possible homogeneous, i.e. for those looking against the direction of radiation Observer structureless radiation. To do this, it is necessary to do one if possible effective dispersion of the radiation of the entire ensemble in connection with the desired and depending on the use required light distribution to reach.
  • a vehicle lamp in which at least a light source to a reflector is arranged so that a light source central axis the light source to a main emission direction of the reflector is not parallel.
  • a light emitting diode can be located laterally from a partially parabolic reflector should be arranged so that the central axis of the light beam emitted by it of the main emission direction of the reflector is directed obliquely.
  • a disadvantage of the known luminaire is that the emitted Beams of light through the overlapping solid angle areas only in a few Overlap the distance from the reflectors sufficiently so that the Scattering effect, especially in the close range is not optimized. Furthermore, the Utilization of the available reflector surfaces and thus the lighting efficiency of the luminaire not optimized.
  • the object of the present invention is therefore to meet modern design requirements sufficient vehicle lamp with a plurality of light sources and to propose reflectors in which a selectable, the legal Appropriate light distribution with improved lighting technology Efficiency is realized.
  • Main reflectors are still assigned to the neighboring secondary reflectors, these are immediately adjacent reflectors (except at the edge of the reflector ensemble, each light source has one on the right and one on the left assigned immediate neighboring reflector) with used to the to generate the required light distribution.
  • the reflector ensemble is geometric designed or arranged so that the neighboring or secondary reflectors are also illuminated.
  • Each light source uses the neighboring reflectors as outside areas of the legal light distribution. This leads to a much wider spread of each individual light source compared to the Illumination of only one reflector at a time.
  • the scatter in the overlapping Areas overlap so that the scattering behavior is added up there.
  • the Scattering is over the entire radiation range, i.e. together more effective in the near field and far field.
  • the resulting lighting technology Overall, efficiency is significantly greater than the sum the efficiency of individual reflectors with one light source each.
  • the light sources are are designed as light emitting diodes.
  • LEDs are particularly suitable for use in vehicle lights. They are small, inexpensive and economical in energy consumption. Also stand they in selectable radiation colors, e.g. in red for use as brake light, to disposal. They therefore particularly meet the requirements regarding a compact design combined with a modern luminaire design and low energy consumption.
  • the reflectors are connected in one piece and the light sources on a common Carrier plate arranged.
  • the Reflectors at least partially paraboloid-shaped.
  • the fact that the reflectors are paraboloid-shaped can be used radiation in a simple manner in the direction of a light exit surface to reach.
  • the Light sources positioned at the focal point of the associated main reflector.
  • the emitted light beam is almost perfectly parallelized. Thereby the light beam can be further improved.
  • a parallel bundle of rays is also advantageous to achieve specific radiation effects in interaction with if necessary to achieve subordinate optically effective elements. This will the possible uses of this type of vehicle lights have been expanded.
  • the 90 ° orientation results in a particularly simple construction of the Lamp. This orientation can also be advantageously in a special integrate compact design.
  • the Reflectors optically effective elements, with the help of which a predetermined Light distribution of the reflected radiation from the one at the focal point of the associated one Main reflectors located light sources on the main reflectors and radiation incident on the secondary reflectors is generated.
  • the optically Effective elements can be used as a faceted surface structure be trained. They can also function as a prismatic surface structure be trained.
  • the optically effective elements provide for directly on the reflector surface the required or desired light distribution. This means there are no between Additional reflector and a light exit surface to be arranged Spreading discs or the like necessary.
  • the optically effective elements in the edge areas of the reflectors can be different from the optically effective elements in the core areas lying between the edge areas be designed to overlap the illumination by the light sources, positioned on the one hand in the focal point of their associated luminaire on the other hand, but also illuminate their neighboring reflectors which they are not in focus, so that a largely directed, uniform radiation across the individual reflector limits is generated.
  • the main emission directions of the reflectors are approximately parallel to one another.
  • the parallelism of the main emission directions results in a special one uniform and uniform radiation pattern of the lighting ensemble.
  • Luminous radiation characteristics such as high divergence can be set. This gives you more leeway at Arrangement and design of the reflector ensemble, in particular to a largely predetermined luminaire design in a compact design respective lighting of main reflectors with shared use of secondary reflectors to realize or the number and size of light sources and Varying reflectors.
  • a vehicle lamp 1 essentially consists of a plurality of Light sources 2 and a plurality of the light sources 2 assigned Reflectors 3.
  • the light sources 2 are advantageously designed as light-emitting diodes.
  • the light emitting diodes 2 each sit on a diode base 4, in which the electrical connections are integrated.
  • the LEDs 2 are advantageous on one (not shown) mounted common support plate in a manner known in principle.
  • the light sources 2 are in one with their optical axes 11 right angle oriented deflection angle 5 to a main emission direction 6 of the reflectors 3 arranged.
  • the reflectors 3 have a partially paraboloid shape Reflector surface 7.
  • the light sources 2 are each in the focal points 8 of their assigned main reflectors 3 positioned so that approximately all light beams 9 striking the main reflector 3, from the main reflector surface 7 as parallel aligned light beams 9 'in the main emission direction 6 are reflected (if neglecting imaging errors like spherical aberration).
  • FIG light beam 10 generated in this way is shown.
  • the reflector surface is advantageous 7 with optically active elements (not shown), for example a prism structure, so that the light beam 10 is actually a around the main emission direction 6 in accordance with the light distribution to be achieved has scattered reflection characteristics.
  • Fig. 1 is a line-shaped arrangement of the light sources 2 and 2 'and Reflectors 3 and 3 'shown.
  • the view shows the light sources 2, 2 'of their rear bottom side of their base 4.
  • everyone inside the line-shaped Arrangement lying light source 2 are in addition to their associated Main reflector 3 assigned two secondary reflectors 3 '.
  • the respective light source 2 illuminates, in addition to its associated main reflector 3, the secondary reflectors 3 ', so that apart from a reflection distributed around the main emission direction 6 also a reflection about corresponding secondary emission directions 6 ' arises.
  • 1 shows one main emission direction 6 and two Secondary radiation directions 6 'shown.
  • the neighboring ones act accordingly Light sources 2 'as secondary light sources for the main reflector 3 and so on Interaction with the optically effective elements of the reflector surfaces 7, or secondary reflector surfaces 7 ', a particularly large one is created Spread of each individual light source 2, 2 'and in the sum of all light sources 2, 2 'and reflectors 3, 3' one compared to the sum of the scatter of light source - reflector - single systems where only one light source one reflector each is assigned, a significantly increased lighting technology Efficiency of the vehicle lamp 1.

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)
EP03101294A 2002-05-16 2003-05-09 Feu de véhicule Expired - Lifetime EP1362740B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10221683 2002-05-16
DE10221683A DE10221683A1 (de) 2002-05-16 2002-05-16 Fahrzeugleuchte

Publications (3)

Publication Number Publication Date
EP1362740A2 true EP1362740A2 (fr) 2003-11-19
EP1362740A3 EP1362740A3 (fr) 2006-12-27
EP1362740B1 EP1362740B1 (fr) 2009-02-25

Family

ID=29265311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03101294A Expired - Lifetime EP1362740B1 (fr) 2002-05-16 2003-05-09 Feu de véhicule

Country Status (2)

Country Link
EP (1) EP1362740B1 (fr)
DE (2) DE10221683A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860280A1 (fr) * 2003-09-29 2005-04-01 Koito Mfg Co Ltd Phare de vehicule a lampes a elements photoemissifs
EP1720731A2 (fr) * 2004-02-19 2006-11-15 Gelcore LLC Reflecteur parabolique hors-axe
CN105066041A (zh) * 2015-08-14 2015-11-18 安徽江淮汽车股份有限公司 一种侧转向信号灯

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010012747A1 (de) * 2010-03-25 2011-09-29 Hella Kgaa Hueck & Co. Beleuchtungseinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2069124A (en) * 1980-02-07 1981-08-19 Sidler Gmbh & Co A parabolic reflector
EP1026032A2 (fr) * 1999-02-03 2000-08-09 Autopal S.R.O. Lampe plate à LED pour automobile
EP1077344A2 (fr) * 1999-08-16 2001-02-21 FER Fahrzeugelektrik GmbH Lampe
DE20102587U1 (de) * 2001-02-14 2001-05-10 Fer Fahrzeugelektrik Gmbh Fahrzeugleuchte
EP1148291A2 (fr) * 2000-04-20 2001-10-24 Hella KG Hueck & Co. Lampe pour véhicule

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20004188U1 (de) * 2000-03-06 2000-05-04 Fer Fahrzeugelektrik Gmbh Leuchte

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2069124A (en) * 1980-02-07 1981-08-19 Sidler Gmbh & Co A parabolic reflector
EP1026032A2 (fr) * 1999-02-03 2000-08-09 Autopal S.R.O. Lampe plate à LED pour automobile
EP1077344A2 (fr) * 1999-08-16 2001-02-21 FER Fahrzeugelektrik GmbH Lampe
EP1148291A2 (fr) * 2000-04-20 2001-10-24 Hella KG Hueck & Co. Lampe pour véhicule
DE20102587U1 (de) * 2001-02-14 2001-05-10 Fer Fahrzeugelektrik Gmbh Fahrzeugleuchte

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860280A1 (fr) * 2003-09-29 2005-04-01 Koito Mfg Co Ltd Phare de vehicule a lampes a elements photoemissifs
EP1720731A2 (fr) * 2004-02-19 2006-11-15 Gelcore LLC Reflecteur parabolique hors-axe
EP1720731A4 (fr) * 2004-02-19 2008-07-02 Gelcore Llc Reflecteur parabolique hors-axe
CN105066041A (zh) * 2015-08-14 2015-11-18 安徽江淮汽车股份有限公司 一种侧转向信号灯
CN105066041B (zh) * 2015-08-14 2017-08-29 安徽江淮汽车集团股份有限公司 一种侧转向信号灯

Also Published As

Publication number Publication date
EP1362740B1 (fr) 2009-02-25
DE10221683A1 (de) 2003-12-04
DE50311205D1 (de) 2009-04-09
EP1362740A3 (fr) 2006-12-27

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