EP0872687B1 - Projecteur pour véhicule - Google Patents

Projecteur pour véhicule Download PDF

Info

Publication number
EP0872687B1
EP0872687B1 EP98106662A EP98106662A EP0872687B1 EP 0872687 B1 EP0872687 B1 EP 0872687B1 EP 98106662 A EP98106662 A EP 98106662A EP 98106662 A EP98106662 A EP 98106662A EP 0872687 B1 EP0872687 B1 EP 0872687B1
Authority
EP
European Patent Office
Prior art keywords
reflector
light distribution
light
hand
operating position
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
EP98106662A
Other languages
German (de)
English (en)
Other versions
EP0872687A2 (fr
EP0872687A3 (fr
Inventor
Susanne Hagedorn
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 EP0872687A2 publication Critical patent/EP0872687A2/fr
Publication of EP0872687A3 publication Critical patent/EP0872687A3/fr
Application granted granted Critical
Publication of EP0872687B1 publication Critical patent/EP0872687B1/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
    • 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
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving 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
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • 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
    • F21S41/62—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution for adaptation between right-hand and left-hand traffic

Definitions

  • the invention relates to a headlight for vehicles according to the preamble of the claim 1.
  • a headlamp with a reflector which Rotation of the reflector around its optical axis between left and right-hand traffic can be converted.
  • a disadvantage of the known headlamp is that with rotation of the entire reflector, the light distribution on one side, the light / dark boundary falls below undesirably, so that the light distribution only for one type of traffic can be optimally aligned.
  • a headlight with a reflector is known, the one Has symmetrical light distribution for right and left-hand traffic, with one side the light distribution by shielding a selected reflector area with the help a shielding device arranged between the reflector and the light source is hidden becomes.
  • a disadvantage of this known headlight is that a reflector area cannot contribute to the light distribution for right-hand or left-hand traffic.
  • a headlight with a reflector in which by translational relative movement of the light source to the reflector of the headlights from a first operating position with a predetermined light distribution into a second operating position can be brought with a changed light distribution.
  • the in the Light distribution provided in the first operating position can be advantageous in fog and Snowfall can be used.
  • the light distribution assigned to the second operating position can be used advantageously in haze or rain. The light / dark boundary the light distribution remains unchanged.
  • the object of the present invention is to provide a headlight for vehicles with a Specify reflector that easily with a homogeneous light distribution a sharp light / dark boundary in different operating modes.
  • the invention are by changing the distance between the light source and at least two different types of light distributions can be generated for the reflector, the light distribution completely meets the lighting requirements satisfy.
  • the invention is based on the idea that a translational Changing the relative position of the reflector and light source is the same as a new one Focussing position in the through a coordinated design of the free-form reflector another predetermined light distribution can be generated.
  • the reflector is designed as an open space reflector, so that by a relative displacement of the Light source generates a second light distribution on the optical axis of the reflector can be. With simple adjustment means, the headlight can at least generate two different types of light distributions.
  • the headlight in a first operating position as a headlight with a light distribution used for right-hand traffic and in a second operating position, in the light source is closer to the hole in the reflector, to generate a light distribution for left-hand traffic.
  • the reflector has a first reflector half, the first Sector for forming an asymmetrical increase in light distribution for right-hand traffic and a second sector to form an asymmetrical increase in light distribution for left-hand traffic.
  • the pre-focusing i.e. the change of the focal point in the direction of the reflector on the optical axis that the light distribution generated by the reflector half is rotated so that in each case an asymmetrical increase can be generated on the other side of a vertical.
  • the sector for the formation of the asymmetrical Rise for left-hand traffic in an upper area of the first reflector half arranged. This allows targeted control by a possibly the Headlight-covering optics pane are made, because the light rays reflected by the upper area of the reflector do not cross.
  • FIG. 1 shows a schematically illustrated headlight (1), which as Low beam headlights are used for motor vehicles.
  • the headlight (1) has a reflector (2) in which a light source (3) is used.
  • the Light source (3) can preferably be used as a halogen lamp, in particular as H7 lamp be formed. It can also be a suitable gas discharge lamp come into use.
  • the reflector (2) has a central, coaxial to one optical axis (A) arranged bore (4), in the known per se
  • the light source (3) is non-positively connected to the reflector (2).
  • the reflector (2) is arranged in a fixed position in a headlight housing (5) the light outlet opening of the headlight through a transparent Cover plate (6) made of glass or plastic is covered.
  • the cover plate (6) can be designed as a clear cover plate with no scattering effect.
  • the cover disc (6) can also be used as an optical disc with a scattering effect be executed.
  • the reflector (2) is designed as an open space reflector consists of several sub-areas so that the light source (3) emitted light reflected as a bundle of light and a predetermined Light distribution on a vertically arranged in front of the vehicle Measuring screen (7) is generated.
  • the headlight (1) By moving the light source (3) from an operating position in which one first light distribution is generated, along the optical axis (A) Path ( ⁇ s) the headlight (1) can be brought into an operating position in which one second light distribution can be generated.
  • different light distributions can be used. For example by setting the light source (3) in a first operating position Light distribution for right-hand traffic and in a second operating position Light distribution for left-hand traffic can be generated.
  • the path ⁇ s is 2.5 mm.
  • the reduction of Distance of the light source (3) from the bore (4) of the reflector (2) can for example by placing a ring on the lamp holder Light source (3) on the back of the reflector (2) can be set.
  • simple Mechanical adjustment means can thus be a when manufacturing the headlight (1) fixed operating position of the light source (3) can be set.
  • the Reflector (2) has a left reflector half (8) and a right reflector half (9), the partial surfaces of the left reflector half (8) being shaped in such a way that in the first operating position an asymmetrical increase to the right of the Vertical of the measuring screen (7) and in the second operating position asymmetrical rise to the left of the vertical (V) of the measuring screen (7) becomes.
  • an upper region is created or an upper sector (10) a basic light distribution to the left of the vertical (V) below the horizontal light / dark boundary.
  • Exemplary for the partial areas are the spiral images of the light source (3) at the reflector points a, b and c of sketched upper area (10) in the light distribution according to Figure 2b.
  • On lower area (11) has a sector (12) which is asymmetrical 15 ° rise (13) to the right of the vertical (V). Examples of these are the Reflector points d and e are shown reflected spiral images, the upper one Pages set the light / dark limit.
  • the described Light distribution representations represent the dashed outline through the generated two reflector halves (8) and (9) in the respective operating mode Light distribution.
  • the upper region (10) produces in the second operating position the asymmetrical increase to the left of the vertical (V) and thus defines the light / dark boundary on the left.
  • the lower Area (11) of the reflector half (8) contributes to the basic light distribution on the right Side of the vertical (V) at.
  • the reduction of Distance of the light source (3) from the bore (4) of the reflector (2) around given path ⁇ s a light distribution that is clockwise around the optical axis (A) is twisted.
  • an upper area (14) of the right reflector half (9) Basic light distribution on the right side of the vertical (V) at.
  • a lower one Area (15) of the reflector half (9) generates light images along the Light / dark boundary (16) on the left side of the vertical (V).
  • FIG. 4c in conjunction with FIG. 4b that in operation for Left-hand traffic the partial areas of the right reflector half (9) a horizontal Create light / dark boundary (17) to the right of the vertical (V). On the left a vertical light distribution is generated for the vertical (V). The light distribution of the right reflector half (9) in operation for right-hand traffic thus experiences one Rotation around the optical axis (A) counterclockwise to pass through Pre-focus to get into left-hand traffic.
  • the functions of the left reflector half (8) can be on the one hand and the right reflector half (9) on the other hand also replaced become. It is important that the partial surfaces of the reflector halves (8) and (9) so are formed that the course of the spiral images, starting from one upper part of a reflector half (8) or (9) to a lowermost Partial area of the same reflector halves, an opposite image from the left to the right or from right to left on the measuring screen (7).
  • FIG. 5 shows an embodiment of a cover disk (6) as an optical disk (20) depicting an area (21) with a special one on the top Area (10) of the left reflector half (8) has coordinated optics.
  • a cover disk (6) as an optical disk (20) depicting an area (21) with a special one on the top Area (10) of the left reflector half (8) has coordinated optics.
  • additional training in accordance with the Asymmetrical rise-oriented prisms of the rise angle in operation be influenced when driving on the left.
  • a scattering of this light beam through a light beam that is reflected at other reflector areas cannot enter.
  • By providing an optical disc (20) for operation in Left-hand traffic of the headlight (1) can optimize the light distribution can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Claims (7)

  1. Projecteur pour véhicules comportant une source lumineuse (3) et un réflecteur (2) qui forme à partir de la lumière émise par la source lumineuse (3) un faisceau lumineux qui engendre une répartition de lumière prédéterminée avec une limite de clair-obscur, le réflecteur (2) étant réalisé sous forme de réflecteur à surfaces libres de sorte que l'on peut régler une première répartition de lumière prédéterminée dans une première position de fonctionnement et que l'on peut régler une deuxième répartition de lumière prédéterminée par variation en translation de la position relative de la source lumineuse (3) par rapport au réflecteur (2) depuis la première position de fonctionnement jusqu'à une deuxième position de fonctionnement, caractérisé en ce que dans la première position de fonctionnement, le réflecteur (2) engendre une répartition de lumière pour la circulation à droite et en ce qu'en réduisant la distance entre la source lumineuse (3) et un perçage (4) du réflecteur (2), de la valeur d'une course de déplacement (s) prédéterminée, le projecteur (1) peut être amené jusque dans la deuxième position de fonctionnement dans laquelle une répartition de lumière est engendrée pour la circulation à gauche, le réflecteur (2) présentant une première moitié de réflecteur (8) qui présente d'une part un premier secteur (12) pour former une montée asymétrique d'une répartition de lumière pour circulation à droite et d'autre part un deuxième secteur (10) pour former une montée asymétrique d'une répartition de lumière pour circulation à gauche.
  2. Projecteur selon la revendication 1, caractérisé en ce que le deuxième secteur (10) est agencé dans une région supérieure de la première moitié de réflecteur (8).
  3. Projecteur selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que la première moitié de réflecteur (8) est réalisée en tant que moitié de réflecteur gauche qui est agencée à gauche du plan longitudinal vertical du réflecteur (2) en direction de sortie de la lumière.
  4. Projecteur selon l'une des revendications 1 à 3, caractérisé en ce que les surfaces partielles de la moitié de réflecteur gauche (8) sont réalisées de telle sorte qu'en partant de la région supérieure (10) sont engendrées des images en hélice qui s'étendent depuis un bord gauche de la répartition de lumière jusqu'à un bord droit de celle-ci
  5. Projecteur selon l'une des revendications 1 à 4, caractérisé en ce que le secteur (12) pour former la montée asymétrique en circulation à droite est agencé dans une région inférieure (11) de la surface de réflecteur gauche (8).
  6. Projecteur selon l'une des revendications 1 à 5, caractérisé en ce qu'une deuxième moitié de réflecteur opposée est réalisée en tant que moitié de réflecteur droite (9) avec des surfaces partielles telles que dans la première position de fonctionnement est engendrée une répartition de lumière avec une limite de clair-obscur horizontale à gauche de la verticale et dans la deuxième position de fonctionnement est engendrée une répartition de lumière avec une limite de clair-obscur horizontale à droite de la verticale.
  7. Projecteur selon la revendication 6, caractérisé en ce que les images en hélice qui sont engendrées par la moitié de réflecteur droite (9) depuis une région supérieure (14) vers une région inférieure (15) s'étendent en direction opposée aux images en hélice qui sont engendrées par la moitié de réflecteur gauche (8) depuis la région supérieure (10) vers la région inférieure (11).
EP98106662A 1997-04-18 1998-04-11 Projecteur pour véhicule Expired - Lifetime EP0872687B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19716216 1997-04-18
DE19716216A DE19716216A1 (de) 1997-04-18 1997-04-18 Scheinwerfer für Fahrzeuge

Publications (3)

Publication Number Publication Date
EP0872687A2 EP0872687A2 (fr) 1998-10-21
EP0872687A3 EP0872687A3 (fr) 2000-12-20
EP0872687B1 true EP0872687B1 (fr) 2003-07-16

Family

ID=7826886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106662A Expired - Lifetime EP0872687B1 (fr) 1997-04-18 1998-04-11 Projecteur pour véhicule

Country Status (3)

Country Link
EP (1) EP0872687B1 (fr)
DE (2) DE19716216A1 (fr)
ES (1) ES2203845T3 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS636602U (fr) * 1986-06-30 1988-01-18
JPH0317362Y2 (fr) * 1986-07-10 1991-04-12
DE3933540C2 (de) * 1989-10-07 1999-04-01 Bosch Gmbh Robert Scheinwerfer mit veränderbarer Lage einer darin angeordneten Lichtquelle für Kraftfahrzeuge
DE4307109C2 (de) * 1993-03-06 2003-12-24 Bosch Gmbh Robert Abblendlichtscheinwerfer für Rechts- und Linksverkehr für Kraftfahrzeuge
DE4307110C2 (de) * 1993-03-06 2002-06-20 Bosch Gmbh Robert Kraftfahrzeugscheinwerfer mit wenigstens einer bewegbaren Abschirmvorrichtung

Also Published As

Publication number Publication date
DE19716216A1 (de) 1998-10-22
EP0872687A2 (fr) 1998-10-21
EP0872687A3 (fr) 2000-12-20
DE59809006D1 (de) 2003-08-21
ES2203845T3 (es) 2004-04-16

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