EP0872687A2 - Projecteur pour véhicule - Google Patents

Projecteur pour véhicule Download PDF

Info

Publication number
EP0872687A2
EP0872687A2 EP98106662A EP98106662A EP0872687A2 EP 0872687 A2 EP0872687 A2 EP 0872687A2 EP 98106662 A EP98106662 A EP 98106662A EP 98106662 A EP98106662 A EP 98106662A EP 0872687 A2 EP0872687 A2 EP 0872687A2
Authority
EP
European Patent Office
Prior art keywords
reflector
light
light distribution
operating position
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.)
Granted
Application number
EP98106662A
Other languages
German (de)
English (en)
Other versions
EP0872687A3 (fr
EP0872687B1 (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 with a light source and a reflector that comes from the light emitted by the light source Bundle of light forms a predetermined light distribution with a Light / dark border generated.
  • a headlight with a reflector is known by rotating the reflector about its optical axis between left and Right-hand traffic can be converted.
  • a disadvantage of the known Headlamp is that when the entire reflector rotates, the light distribution undesirably falls below the light / dark limit on one side, so that the Light distribution can only be optimally aligned for one type of traffic.
  • a headlight with a reflector has a symmetrical light distribution for right-hand and left-hand traffic, whereby one side of the light distribution by shielding a selected one Reflector area with the help of a between reflector and light source arranged shielding device is hidden.
  • Disadvantage of this known headlights is that a reflector area is not for light distribution can contribute to right-hand or left-hand traffic.
  • the object of the present invention is a headlight for vehicles specify with a reflector that is easily a homogeneous Light distribution with a sharp light / dark boundary in different Operating modes enabled.
  • the reflector as an open space reflector is designed such that a first predetermined light distribution in a first operating position is adjustable and that a second predetermined Light distribution through translational change in the relative position of the Light source to the reflector from the first operating position to the second Operating position is adjustable.
  • the particular advantage of the invention is that by changing the Distance between the light source and the reflector at least two different types of light distributions can be generated, the Light distributions completely meet the lighting requirements will.
  • the invention is based on the idea that by a translational change in the relative position of the reflector and light source it assumes a new focusing position, in which a coordinated one Formation of the open space reflector a different predetermined light distribution can be generated.
  • the reflector is as Open space reflector formed that by a relative displacement of the Light source on the optical axis of the reflector a second light distribution can be generated.
  • the headlight can be in a first Operating position as a headlight with a light distribution for right-hand traffic are used and in a second operating position in which the light source takes a smaller distance to the bore of the reflector, for generation serve a light distribution for left-hand traffic.
  • the focus point of the A light source can be specified for the respective operating positions simple settings can be made for the respective traffic types.
  • the reflector has a first reflector half, which forms a first sector to form a asymmetrical increase in light distribution for right-hand traffic and one second sector to form an asymmetrical increase in light distribution for left-hand traffic.
  • the pre-focusing i.e. the Change the focus point in the direction of the reflector on the optical Axis that the light distribution generated by the reflector half is rotated so that on the other side of a vertical an asymmetrical Increase can be generated.
  • 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. Alternatively, the cover plate (6) can also be used as an optics plate 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 adjusted.
  • 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.
  • a lower area (11) has a sector (12) which is asymmetrical 15 ° rise (13) to the right of the vertical (V).
  • These are exemplary of 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 limit on the left side.
  • 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.
  • the Spiral images at the reflector points a '', b '', c '', d '' and e '' illustrate that in contrast to the spiral images, which are shown by the left reflector half (8) are generated, starting from the spiral images of the right reflector half (9) from the upper region (14) of the reflector half (9) to the lower region (15) from a right edge of the light distribution towards a left Extend the edge of the same.
  • FIG. 4c in connection 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 Twist 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 will. 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 Part 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) depicted an area (21) with a special, on the upper Area (10) of the left reflector halves (8) has coordinated optics.
  • a cover disk (6) as an optical disk (20) depicted an area (21) with a special, on the upper Area (10) of the left reflector halves (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 the 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)
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 true EP0872687A2 (fr) 1998-10-21
EP0872687A3 EP0872687A3 (fr) 2000-12-20
EP0872687B1 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)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307110A1 (de) 1993-03-06 1994-09-08 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge
DE4307109A1 (de) 1993-03-06 1994-09-08 Bosch Gmbh Robert Abblendlichtscheinwerfer für Fahrzeuge

Family Cites Families (3)

* 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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307110A1 (de) 1993-03-06 1994-09-08 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge
DE4307109A1 (de) 1993-03-06 1994-09-08 Bosch Gmbh Robert Abblendlichtscheinwerfer für Fahrzeuge

Also Published As

Publication number Publication date
EP0872687A3 (fr) 2000-12-20
DE59809006D1 (de) 2003-08-21
DE19716216A1 (de) 1998-10-22
EP0872687B1 (fr) 2003-07-16
ES2203845T3 (es) 2004-04-16

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