EP0762049B1 - Signalleuchte mit mehreren in Reihe angeordneten Lichtquellen, insbesondere komplementäre Bremsleuchte für Kraftfahrzeuge - Google Patents

Signalleuchte mit mehreren in Reihe angeordneten Lichtquellen, insbesondere komplementäre Bremsleuchte für Kraftfahrzeuge Download PDF

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Publication number
EP0762049B1
EP0762049B1 EP96401938A EP96401938A EP0762049B1 EP 0762049 B1 EP0762049 B1 EP 0762049B1 EP 96401938 A EP96401938 A EP 96401938A EP 96401938 A EP96401938 A EP 96401938A EP 0762049 B1 EP0762049 B1 EP 0762049B1
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EP
European Patent Office
Prior art keywords
light
sources
mirror
emission
indicator light
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.)
Expired - Lifetime
Application number
EP96401938A
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English (en)
French (fr)
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EP0762049A1 (de
Inventor
Dominique Montalan
Pascal Phan
Hervé Richard
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.)
Valeo Vision SAS
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Valeo Vision SAS
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Filing date
Publication date
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Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP0762049A1 publication Critical patent/EP0762049A1/de
Application granted granted Critical
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Classifications

    • 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
    • F21V5/008—Combination of two or more successive refractors along an 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
    • 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]
    • 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
    • F21S43/15—Strips of 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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • 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
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Definitions

  • the present invention relates generally to signaling lights comprising a plurality of sources light bulbs of low power and small dimensions, aligned, and means for processing the light emitted by these sources to form a signaling beam of adequate photometry.
  • the sources are preferably light emitting diodes.
  • a stop light must emit a light beam relatively intense, also it is necessary to provide a relatively large number of sources, and close to each other others.
  • each light emitting diode an optical device of the kind Fresnel lens arranged in front of the diode.
  • This solution is however disadvantageous in that to recover most of the light flux emitted by each diode light-emitting, the height of each lens must be important, which increases the size of the fire.
  • the present invention aims to overcome these limitations of the state of the art, and to propose a traffic light in which the spacing between the different sources can be increased, while maintaining a low height and without significant loss of optical efficiency.
  • the invention proposes for this purpose a signaling light as defined in claim 1.
  • a fire of signaling in this case an additional brake light for rear window, which includes a housing 10 of form elongated, closed at the front (relative to the steering light emission, that is to say on the left on the Figure 1 and on the right in Figures 3 and 4) by an indicator 60 in profile in general "U" shape.
  • the housing is fixed on the vehicle by screws V engaged in holes formed in the case.
  • an elongated printed circuit 30 on which are soldered in alignment a plurality of diodes electroluminescent 20 of conventional type, that is to say comprising a housing 21, a hemispherical part 22 light emission and two connection tabs 23.
  • the reference R designates a resistor fixing the current passing through the diodes 20.
  • the light emitting diodes 20 are in this case spaced about 25 mm apart, and twelve in number, these values however, not being limiting.
  • each diode light emitting 20 emits light in a emission indicator (solid angle covered by the radiation) in the form of a cone having a half angle at vertex ⁇ of about 50 °.
  • a emission indicator solid angle covered by the radiation
  • sources with other emission indicators may be used.
  • double means optics are used to get a beam of appropriate photometry signaling.
  • These means consist firstly of a mirror 40, and secondly in a plate 50 located between the edges front of the mirror and carrying a series of reliefs forming individual Fresnel lenses for each of sources 20.
  • the mirror 40 is focused on the line passing through the different sources 20.
  • the mirror 40 is fixed to the printed circuit 30 by spacers 41 located between adjacent diodes 20 and connected to the mirror at a flat bottom 42 of said mirror, inoperative due to the reduced emission cone of the sources.
  • the reliefs of the optical plate 50 are designated by the reference 51 in FIG. 6, and can be located either on its internal face, either on its external face (as illustrated).
  • the different Fresnel lenses formed by these reliefs are focused on the respective sources and have axes perpendicular to the source line.
  • the arrangement of the mirror 40 and Fresnel lens plate 50 is such that part of the conical radiation emitted by each source directly meets the associated Fresnel lens, and that another part of this radiation, more outside, meets the upper and lower parts of the mirror 40 to be redirected, substantially horizontally, towards the respective Fresnel lenses.
  • zones Z1 illustrate, in a plane perpendicular to the axis of a respective source, the part of radiation reflected by the mirror and then crossing the Fresnel lens, while zone Z2 illustrates the part of the radiation arriving directly on the lens from Fresnel.
  • the light emitted towards zone Z2 contributes mainly to allow the fire to satisfy the grate regulatory photometric, in conjunction with beads or light scattering toroids 61 formed on the face internal light, while the light emitted to the zones Z1 contributes to an increase in light intensity, as well as making the illuminating surface of the lit fire more homogeneous, in particular by the fact that the mirror is of the type cylindrical and does not reduce the light emitted laterally towards the optical axis.
  • the outline of the light exit window for the source considered is designated by F.
  • the angle of the transition planes, above and below horizontally, between zones Z1 and Z2 is designated by ⁇ . Its value is of course less than ⁇ and preferably of the order of 30 to 40 °.
  • the present invention it has been possible to produce a fire signaling device with twelve diodes standard LEDs spaced 25 mm apart, having a height (at the level of the mirror 40 and of the plate 50) of 10 mm, meeting the regulations for photometry, with more than satisfactory intensity and a homogeneous illuminating surface.
  • the mirror 40 can come molding during the manufacture of the housing 10.

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)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Led Device Packages (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Claims (7)

  1. Signalleuchte, insbesondere zusätzliche Bremsleuchte für Kraftfahrzeuge, mit einem Gehäuse (10) geringer Höhe, einer Vielzahl allgemein in einer Reihe angeordneter Lichtquellen (20), die jeweils Licht in einer gegebenen Leuchtdichte-Indikatrix aussenden, wobei die Lichtquellen durch Leuchtdioden (20) gebildet sind, die einen Körper (21) aufweisen, der breiter ist als eine emittierende Fläche (22), sowie optische Mittel (40, 50) zum Ausrichten des von den Lichtquellen ausgestrahlten Lichts in eine allgemeine Emissionsrichtung, wobei die Mittel zum Ausrichten einzelne Linsen (51) umfassen, die jeweils in der Nähe einer entsprechenden Lichtquelle (20) fokussiert sind und der durch die entsprechenden Lichtquellen emittierten Strahlung in einem mittleren Bereich (Z2) ihrer Leuchtdichte-Indikatrix direkt ausgesetzt sind, und eine Scheibe (60), die mit optischen Elementen zur Streuung des Lichts versehen ist, dadurch gekennzeichnet, dass die optischen Mittel zum Ausrichten des Lichts ferner einen zylindrischen Reflektor (40) umfassen, dessen Leitlinie parallel zu der Linie ist, die durch die verschiedenen Lichtquellen verläuft, und der sich ausgehend von den Körpern (21) der Leuchtdioden in Richtung der Linsen erstreckt und das von den Lichtquellen emittierte Licht wenigstens in einem Randteil ihrer Leuchtdichte-Indikatrix zu den Linsen absenkt.
  2. Signalleuchte nach Anspruch 1,
    dadurch gekennzeichnet, dass die Linsen (51) Fresnel-Linsen sind, die auf einer gemeinsamen Platte (50) angeordnet sind.
  3. Signalleuchte nach einem der Ansprüche 1 oder 2,
    dadurch gekennzeichnet, dass der Reflektor (40) ein Parabol-Profil aufweist und in der Nähe einer Linie fokussiert ist, die durch die verschiedenen Lichtquellen (20) verläuft.
  4. Signalleuchte nach Anspruch 3,
    dadurch gekennzeichnet, dass die Leuchtdichte-Indikatrix einer jeden Uchtquelle ein Kegel ist, der am Scheitelpunkt () einen halben Kegelwinkel von etwa 50° aufweist, und dass der Reflektor einen Emissionswinkelbereich nach oben und nach unten abdeckt, der in Bezug auf die allgemeine Emissionsrichtung auf einen Winkel (ϕ) von etwa 30 bis 40° begrenzt ist.
  5. Signalleuchte nach Anspruch 4,
    dadurch gekennzeichnet, dass die Leuchtdioden (20) voneinander etwa 25 mm beabstandet sind.
  6. Signalleuchte nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass die Leuchtdioden (20) auf einer gemeinsamen gedruckten Schaltung (30) aufgelötet sind und dass der Reflektor (40) auf der gedruckten Schaltung montiert ist.
  7. Signalleuchte nach Anspruch 6,
    dadurch gekennzeichnet, dass der Reflektor (40) einen flachen Boden (42) besitzt, auf dessen Höhe er mittels Abstandshaltern (41) auf der gedruckten Schaltung (30) montiert ist.
EP96401938A 1995-09-11 1996-09-11 Signalleuchte mit mehreren in Reihe angeordneten Lichtquellen, insbesondere komplementäre Bremsleuchte für Kraftfahrzeuge Expired - Lifetime EP0762049B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9510599 1995-09-11
FR9510599A FR2738621B1 (fr) 1995-09-11 1995-09-11 Feu de signalisation a plusieurs sources alignees, notamment feu stop complementaire pour vehicule automobile

Publications (2)

Publication Number Publication Date
EP0762049A1 EP0762049A1 (de) 1997-03-12
EP0762049B1 true EP0762049B1 (de) 2003-06-25

Family

ID=9482421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401938A Expired - Lifetime EP0762049B1 (de) 1995-09-11 1996-09-11 Signalleuchte mit mehreren in Reihe angeordneten Lichtquellen, insbesondere komplementäre Bremsleuchte für Kraftfahrzeuge

Country Status (6)

Country Link
US (1) US5762414A (de)
EP (1) EP0762049B1 (de)
JP (1) JPH09180517A (de)
DE (1) DE69628792T2 (de)
ES (1) ES2201160T3 (de)
FR (1) FR2738621B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013082A1 (de) 2007-03-14 2008-09-18 Hella Kgaa Hueck & Co. Signalleuchte

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FR2776595B1 (fr) 1998-03-31 2000-06-16 Valeo Vision Feu de signalisation comprenant plusieurs sources lumineuses
JP3185977B2 (ja) * 1998-08-12 2001-07-11 スタンレー電気株式会社 Ｌｅｄランプ
US6102559A (en) * 1999-01-25 2000-08-15 Ford Motor Company Multi-function vehicle taillight system with unitary optic
EP1077344A3 (de) 1999-08-16 2004-01-28 FER Fahrzeugelektrik GmbH Leuchte
DE19938734A1 (de) * 1999-08-16 2001-03-01 Fer Fahrzeugelektrik Gmbh Fahrzeugleuchte
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US8931941B2 (en) * 2012-05-30 2015-01-13 Tong Yah Electronic Technology Co., Ltd. Vehicular light-emitting diode light providing uniform wider illumination
DE102017116885B4 (de) * 2017-07-26 2023-04-06 Ledvance Gmbh Leuchtmittel und Linse für ein Leuchtmittel
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DE102007013082A1 (de) 2007-03-14 2008-09-18 Hella Kgaa Hueck & Co. Signalleuchte

Also Published As

Publication number Publication date
EP0762049A1 (de) 1997-03-12
FR2738621A1 (fr) 1997-03-14
ES2201160T3 (es) 2004-03-16
FR2738621B1 (fr) 1997-11-28
JPH09180517A (ja) 1997-07-11
US5762414A (en) 1998-06-09
DE69628792T2 (de) 2004-05-19
DE69628792D1 (de) 2003-07-31

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