EP0990838B1 - Lampe pour véhicules automobiles - Google Patents

Lampe pour véhicules automobiles Download PDF

Info

Publication number
EP0990838B1
EP0990838B1 EP99118501A EP99118501A EP0990838B1 EP 0990838 B1 EP0990838 B1 EP 0990838B1 EP 99118501 A EP99118501 A EP 99118501A EP 99118501 A EP99118501 A EP 99118501A EP 0990838 B1 EP0990838 B1 EP 0990838B1
Authority
EP
European Patent Office
Prior art keywords
reflector
lamp
light
elements
disc
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
EP99118501A
Other languages
German (de)
English (en)
Other versions
EP0990838A2 (fr
EP0990838A3 (fr
Inventor
Martin Mügge
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 EP0990838A2 publication Critical patent/EP0990838A2/fr
Publication of EP0990838A3 publication Critical patent/EP0990838A3/fr
Application granted granted Critical
Publication of EP0990838B1 publication Critical patent/EP0990838B1/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
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255

Definitions

  • the invention relates to a light for motor vehicles according to the preamble of patent claim 1.
  • a luminaire for vehicles in which the light reflected by a reflector is deflected in the horizontal and vertical directions by a multiplicity of scattering elements arranged on the inside of a lens, so that a predetermined light distribution is generated.
  • the scattering elements are each formed from a plurality of partial prisms with flat surfaces.
  • a luminaire for motor vehicles is also known from EP 0 472 890 B1, in which a lens with a plurality of optical scattering elements generates the predetermined light distribution.
  • This known lens consists of a combination of alternately arranged in rows of circular cone-shaped and cylindrical scattering elements.
  • a luminaire with a light source a reflector and a reflector covering the lens is known.
  • the lens has scattering elements, which are arranged in grid form in rows and columns and by means of which the light is deflected substantially in the vertical direction.
  • the reflector has dome-shaped reflector elements which deflect the incident light in the vertical and horizontal directions.
  • Object of the present invention is therefore to provide a luminaire with a beveled edge side of the lens, which produces a predetermined light distribution in a homogeneous and visually appealing appearance of the same.
  • the invention has the features of claim 1.
  • the particular advantage of the invention is that the grid-like structure of the line-shaped and column-shaped scattering elements of the lens can be adapted to the contour of the body opening visually appealing, means are provided to meet the requirements of a given light distribution.
  • the basic idea of the invention is to bring about a local decoupling between the horizontal and the vertical scattering effect.
  • a scattering in a horizontal Abstrahlebene by arranged on the inside of a reflector reflector elements.
  • scattering in a vertical emission plane is caused by scattering elements arranged on a lens.
  • the scattering elements can be made flatter on the lens, so that the light losses can be smaller.
  • the lens imparts increased brilliance in aesthetic terms.
  • an increased production cost for otherwise relatively bulging diffuser elements of the lens can be reduced.
  • the reflector elements are cylindrical in shape, which extend in an elongated manner in the vertical direction. As a result, the reflector elements allow scattering in the horizontal direction.
  • this has a substantially trapezoidally shaped lens, with at least one oblique edge side on, extending parallel to the edge side extending rows or columns of the scattering elements fan-shaped to the opposite edge side.
  • the location of the reflector elements is in a curved section of the reflector, which is adjoined by an elongated section formed from flat surfaces.
  • the design of this elongate section can be made so that the scattering of the light in the horizontal direction is increased.
  • the elongated section has line-shaped prisms which extend in the horizontal direction. They promote a channeling of the light and cause a scattering of the light in the horizontal direction of radiation.
  • the scattering elements of the lens are hood-shaped, wherein the curvature thereof is increased in the vertical direction.
  • the fact that the scattering elements each have a curvature in the horizontal direction, on the one hand a more homogeneous scattering and on the one hand a visually appealing appearance of the lens is made possible.
  • a light (1) for motor vehicles essentially consists of a light source (2), which is framed by a reflector (3). At a light exit opening of the reflector (3), a lens (4) with scattering elements (5) is arranged, which are positioned in a grid-like manner to each other.
  • the reflector (3) shown in Figure 2 forms one of several chambers of a multi-chamber lamp (18) shown in Figure 1. Each chamber is assigned a specific light function, such as rear fog light, brake light or reversing light.
  • the opening edge of the Karrrosserie for the multi-chamber lamp (18) shown in Figure 1 has a trapezoidal design with an oblique opening edge (6), to which a parallel oblique edge side (7) of the lens (4) corresponds.
  • the scattering elements (5) of the lens (4) are arranged in rows (8) and in columns (9). As can be seen from FIG. 1, the lines (8) run essentially in the horizontal direction (H). The columns (9) of the scattering elements (5) form an acute angle to a vertical (V).
  • the columns (9), starting from the oblique edge side (7) extend in horizontal direction to the opposite straight edge side, not shown, fan-shaped, ie to the vertical (V) on the oblique edge side (7) formed acute angle decreases to the opposite straight edge side down until it reaches zero when reaching the vertical straight edge side occupies.
  • the lens (4) is formed substantially flat. In a curved design of the lens, the rows and columns are also curved.
  • the rows (8) and columns (9) produce a non-orthogonal lattice structure, with lattice elements (5) of uniform design extending essentially on an inner side of the lens (4).
  • the scattering elements may also have a different shape, which is adapted to the corresponding lighting requirements.
  • the scattering elements (5) are each hood-shaped, wherein a curvature (10) in the column direction (S) is greater than a curvature (10 ') in the row direction (Z).
  • a curvature (10) in the column direction (S) is greater than a curvature (10 ') in the row direction (Z).
  • the light is deflected mainly in the vertical direction.
  • the curvature in the row direction (Z) also takes place, albeit smaller deflection in the horizontal direction.
  • the individual scattering elements (5) have a rectangular or square projection surface, wherein the radii of curvature are oriented in the row direction (Z) or in the column direction (S).
  • the scattering elements (5) are directly adjacent to each other, wherein common edge lines (11) are formed.
  • the edge lines (11) have a curved course.
  • the reflector (3) consists of a parabolic curved portion (12) and an integrally adjoining elongated portion (13) which is trapezoidal in cross-section and has planar side walls (14).
  • the curved portion (12) has in the vertical direction (V) extending cylindrical reflector elements (15) whose curvature or curvature at a constant radius in the horizontal direction (H) extends.
  • the curvature of the reflector element (15) can also be curved in cross-section or flattened on one side.
  • the Reflector elements (15) may also have a different shape to each other, wherein depending on the lighting requirements, a flattening takes place in a common direction.
  • the surface of the reflector elements (15) may be formed as open spaces with any continuous course.
  • the adjacently arranged reflector elements (15) cause a scattering of the light source (2) emitted light in the horizontal direction (H).
  • FIG. 1 The course of a partial light bundle is shown in FIG.
  • a part of the light reflected in the curved section (12) directly strikes the lens (4), through the scattering elements (5) of which they are deflected substantially in the vertical direction.
  • Another part of the light beam is previously reflected on one or two opposite side walls (14) of the elongated portion (13) and impinges on the inside of the lens (4) at an increased angle of incidence.
  • the elongated portion of the reflector (3) may be formed profiled, as can be seen from a cross section of a square reflector (20) in Figure 3.
  • upright side walls (16) of the elongate section of the reflector (20) have step-shaped prisms (17) which each extend in the horizontal direction (H). They cause a channeling of the light, whereby a scattering in the horizontal direction is promoted.
  • the light source (21) is arranged in a central region.
  • the prisms (17) compensate for the side walls (16) inclined about a horizontal axis and cause the light distribution at the top and bottom edges thereof to have a substantially straight course.
  • Figure 1 shows that the multi-chamber lamp (18) with different light functions associated stray fields (19) of the lens (4) is formed, wherein the columnar scattering elements (5) are continuously rotated between two non-parallel edge sides such that the edge side adjacent column (9) runs parallel to the edge side. Preferably, this rotation of the column (9) takes place in equal partial or angular increments.
  • the lines can undergo a corresponding rotation, so that any shape of the luminaire formed with straight edge sides and adjoining parallel rows of scattering elements can be produced.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (9)

  1. Feu comportant un réflecteur (3) associé à une source lumineuse (2) et une plaque d'éclairement (4) recouvrant le réflecteur (3), avec des éléments de diffusion (5) pour dévier la lumière, les éléments de diffusion (5) étant agencés en forme de grille en rangées (8) et en colonnes (9) et les éléments de diffusion (5) présentant une courbure telle que la lumière est déviée sensiblement en direction verticale (V), caractérisé en ce que les rangées (8) et/ou les colonnes (9) sont chacune agencées avec décalage progressif les unes par rapport aux autres de telle sorte qu'une rangée (8) de bord et/ou une colonne (9) de bord s'étend parallèlement à un bord d'ouverture oblique d'une carrosserie et en ce que le réflecteur (3) présente une multitude d'éléments de réflecteur (15) de forme cylindrique s'étendant en direction verticale (V) avec une courbure telle que la lumière est déviée en direction horizontale (H).
  2. Feu selon la revendication 1, caractérisé en ce que la plaque d'éclairement (4) est réalisée en forme de trapèze avec au moins un côté de bord (7) en oblique et une rangée (8) ou colonne (9) d'éléments de diffusion (5), voisine de celui-ci, les rangées (8) ou colonnes (9) s'étendant en forme d'éventail en direction d'un côté de bord opposé, de la plaque d'éclairement (4).
  3. Feu selon la revendication 1 ou 2, caractérisé en ce que les éléments de diffusion (5) sont réalisés chacun en forme de calotte avec une courbure qui est plus grande en direction de colonne (S) qu'en direction de rangée (Z).
  4. Feu selon l'une des revendications 1 à 3, caractérisé en ce que le réflecteur (3) est réalisé en forme de tube.
  5. Feu selon l'une des revendications 1 à 4, caractérisé en ce que le réflecteur (3) présente, sur un côté détourné de la plaque d'éclairement (4), un tronçon (12) incurvé présentant les éléments de réflecteur (15) et un tronçon (13) allongé se raccordant à celui-ci en direction de sortie de lumière.
  6. Feu selon la revendication 5, caractérisé en ce que le tronçon (13) allongé du réflecteur (3) présente sur la face intérieure des prismes (17) s'étendant à l'horizontale.
  7. Feu selon l'une des revendications 1 à 6, caractérisé en ce que le feu (1) est réalisé sous forme de feu à chambres multiples (18) avec au moins deux réflecteurs (3) et une seule plaque d'éclairement (4) avec un nombre de champs de diffusion (19) qui correspond aux réflecteurs (3), les rangées (8) et/ou colonnes (9) des éléments de diffusion (5) s'étendant sous torsion continue entre deux côtés de bord (7) opposés l'un à l'autre et non parallèles, de la plaque d'éclairement.
  8. Feu selon l'une des revendications 1 à 7, caractérisé en ce que les éléments de diffusion (5) présentent une surface de base rectangulaire et sont réalisés en relief.
  9. Feu selon l'une des revendications 1 à 8, caractérisé en ce que les éléments de diffusion (5) sont agencés de manière répartie sur une face intérieure de la plaque d'éclairement (4).
EP99118501A 1998-09-29 1999-09-18 Lampe pour véhicules automobiles Expired - Lifetime EP0990838B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19844594A DE19844594A1 (de) 1998-09-29 1998-09-29 Leuchte für Kraftfahrzeuge
DE19844594 1998-09-29

Publications (3)

Publication Number Publication Date
EP0990838A2 EP0990838A2 (fr) 2000-04-05
EP0990838A3 EP0990838A3 (fr) 2002-09-04
EP0990838B1 true EP0990838B1 (fr) 2006-05-17

Family

ID=7882618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118501A Expired - Lifetime EP0990838B1 (fr) 1998-09-29 1999-09-18 Lampe pour véhicules automobiles

Country Status (3)

Country Link
EP (1) EP0990838B1 (fr)
DE (2) DE19844594A1 (fr)
ES (1) ES2263244T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI24424A (sl) 2013-07-25 2015-01-30 Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O. Svetilo motornega vozila

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2508597A1 (fr) * 1981-06-30 1982-12-31 Cibie Projecteurs Feu, notamment pour la signalisation des vehicules automobiles
DE3305218C2 (de) 1983-02-16 1986-03-20 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Mehrkammerleuchte für Kraftfahrzeuge
DE9001659U1 (de) * 1990-02-13 1990-04-19 Hella KG Hueck & Co, 4780 Lippstadt Heckleuchte für Fahrzeuge
DE4020081A1 (de) 1990-06-23 1992-01-02 Bosch Gmbh Robert Fahrzeugleuchte
DE4025393C1 (fr) 1990-08-10 1992-01-09 Hella Kg Hueck & Co, 4780 Lippstadt, De
DE9111339U1 (de) * 1991-09-12 1991-10-31 Hella KG Hueck & Co, 4780 Lippstadt Mehrkammerleuchte
JP2584379B2 (ja) 1991-12-13 1997-02-26 株式会社小糸製作所 魚眼ステップの金型作製方法
FR2708081B1 (fr) * 1993-07-20 1995-09-01 Axo Scintex Cie Equip Automobi Feu de signalisation de véhicules automobiles.
JP3160835B2 (ja) * 1993-12-21 2001-04-25 株式会社小糸製作所 車輌用標識灯
FR2733949B1 (fr) * 1995-05-09 1997-08-01 Valeo Vision Feu de signalisation multifonctions pour vehicule automobile, equipe d'elements catadioptriques et pseudo-catadioptriques
FR2753776B1 (fr) * 1996-09-20 1998-12-11 Feu de signalisation a miroir a surface a stries
JP3607019B2 (ja) * 1996-10-17 2005-01-05 株式会社小糸製作所 車輌用灯具

Also Published As

Publication number Publication date
DE19844594A1 (de) 2000-05-11
ES2263244T3 (es) 2006-12-01
DE59913430D1 (de) 2006-06-22
EP0990838A2 (fr) 2000-04-05
EP0990838A3 (fr) 2002-09-04

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