EP0750156A2 - Kfz-Scheinwerfer nach dem Projektionsprinzip mit verbessertem Reflektor - Google Patents

Kfz-Scheinwerfer nach dem Projektionsprinzip mit verbessertem Reflektor Download PDF

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Publication number
EP0750156A2
EP0750156A2 EP96401351A EP96401351A EP0750156A2 EP 0750156 A2 EP0750156 A2 EP 0750156A2 EP 96401351 A EP96401351 A EP 96401351A EP 96401351 A EP96401351 A EP 96401351A EP 0750156 A2 EP0750156 A2 EP 0750156A2
Authority
EP
European Patent Office
Prior art keywords
mirror
lens
projector
lamp
projector 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
EP96401351A
Other languages
English (en)
French (fr)
Other versions
EP0750156A3 (de
EP0750156B1 (de
Inventor
Antonio Lopez Vasco
Fermin Gonzalez Gallegos
Vincente Vallejo Fernandez
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
Original Assignee
Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP0750156A2 publication Critical patent/EP0750156A2/de
Publication of EP0750156A3 publication Critical patent/EP0750156A3/de
Application granted granted Critical
Publication of EP0750156B1 publication Critical patent/EP0750156B1/de
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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated

Definitions

  • the present invention relates to headlamps of the elliptical type for motor vehicles.
  • a projector of this kind conventionally consists of a lamp mounted in the region of the first focus of an elliptical mirror, and a converging lens whose focal plane passes in the vicinity of the second focus of the mirror to project onto the road. the image shows said second focus.
  • This spotlight is supplemented if necessary by a concealer placed substantially in said focal plane, so as to form a cut beam whose limits are defined by an upper edge of the concealer.
  • the lens is directly integrated into the lens of the projector, or the projector has a separate lens, generally smooth, in front of the lens.
  • the projector further comprises an intermediate piece PI, which is mounted on the edge of the front opening of the mirror M by extending the latter forward.
  • This piece PI includes a screen or blackout E intended to give the beam the desired cutting profile, as well as a ring B intended to receive and hold a lens Le by its edges.
  • the projector mirror produced in one piece, is necessarily an open mirror, whether it is produced by molding or stamping. As a result, the recovery of the luminous flux emitted by the lamp is limited.
  • DE-C-427143 discloses a projector as defined in the preamble of claim 1.
  • this known projector is not capable of generating a beam having a clear cut.
  • an extension of the mirror, acting downstream of a first lens and upstream of a second lens is used as a means of forming the cut.
  • the use of two lenses significantly increases the cost and the difficulty of manufacturing the projector.
  • the present invention therefore aims to propose a projector of the elliptical type, in which the recovery of the luminous flux emitted by the source is significant, and which is at the same time capable of generating a beam with a clear cut-off with, moreover, a simpler structure and economic.
  • FIG. 1bis there is shown schematically an elliptical projector according to the invention, which comprises a lamp La, a lens Le, and two parts 100 and 200 able to be assembled to each other perpendicular to the optical axis xx of the headlamp, according to the arrows F2, to form a lamp holder, a mirror, an intermediate concealer part and a lens holder ring.
  • these two parts end up in a horizontal plane passing through the x-x axis, this however not being in any way limiting.
  • the upper part 100 comprises a zone PL 'forming an upper half-lamp holder, a zone M' forming an upper half-mirror, a zone PI 'forming an upper intermediate half-part, and a zone B' forming an upper half-ring.
  • the lower part comprises a zone PL "forming a lower half-lamp holder, a zone M" forming a lower half-mirror, a zone PI “forming a lower intermediate half-part, and a zone B" forming a half-ring. lower.
  • the part PI "carries, projecting upwards and in one piece, a concealer or oblique screen E, the upper edge of which is placed substantially in the focal plane of the lens Le.
  • the projector according to Figure 2 also includes a spring R for holding the lamp La on the lamp holder.
  • the mirror M can close in the direction of the lens and extend to the vicinity of the focal plane of the lens Le, or even beyond it, for recovery. significantly increased in flow compared to solutions known in the art of elliptical projectors.
  • parts 100 and 200 can be produced, each in one piece, in any suitable material, preferably by molding.
  • parts can be made of aluminum alloy, zinc alloy, thermosetting resin or high temperature hot melt resin, this list however not being in any way limiting.
  • parts 100 and 200 can be produced by stamping sheet steel, brass, aluminum or any other material capable of being stamped.
  • the two parts 100, 200 are fixed for example by gluing, by screwing or by clipping.
  • the lamp holder, the mirror, the intermediate piece and the lens holder ring consist of two pieces 300, 400 which end up in a vertical plane passing through the optical axis x-x of the projector.
  • the left part 300 (looking at the headlamp from the front) comprises a part PL 'forming the left half-lamp holder, a part M' forming the left half-mirror, a half intermediate part PI 'and a half-ring B '.
  • the elliptical-type mirror has a large extent towards the front while gradually closing up to the intermediate part.
  • the part 300 comprises a lateral wing 301 extending in a vertical plane over the entire height of the part, substantially in the median region of the mirror. It also comprises a wing 302 extending in a vertical plane passing in the vicinity of the optical axis, over most of the depth of the projector, above and below the part.
  • the wing 302 comprises a series of centering pins P.
  • the intermediate part PI ′ consists of an enlarged zone 304, of rectangular section with rounded corners, in which a lateral ventilation hole 306 is formed.
  • This intermediate part PI ' is closed at the rear by a transverse wall in which is formed a half-opening 310, of generally semi-elliptical shape, for the passage of light. It is closed at the front by a transverse wall in which a circular half-opening is formed to receive the lens Le, this opening being bordered by a bead 307 in which a groove 308 is formed for the reception of a peripheral rib of support belonging to the Le lens.
  • a mounting half-ring B ' is thus defined of the lens.
  • wing 302 Furthermore, along the upper and lower edges of the wing 302 are formed rear 303 and front 305 fittings intended to cooperate with assembly clips A.
  • the part 300 further comprises, extending at about 45 ° upwards and backwards from the base of the half-opening, a first occluding part or oblique screen E 'which comprises in its upper part , projecting in the direction of the part 400 from the vertical connection plane of the two parts 300 and 400, an extension 312.
  • the part 400 is produced essentially symmetrically from the part 300 and comprises a lateral wing 401 extending in the same vertical plane as the wing 301, also over the entire height of the projector. It also includes a wing 402 intended to be attached to the wing 302 over its entire extent.
  • the wing 402 has a series of holes T intended to receive the centering pins P during assembly.
  • the intermediate half-part PI is symmetrical with the intermediate half-part PI", with a side ventilation opening 406. It is also closed at the rear by a transverse wall in which is formed a half-opening 410 which, with the half-opening 310, defines a generally elliptical opening for the passage of light from the second focal point of the mirror towards the lens Le .
  • the intermediate half-part PI is closed at the front by a transverse wall in which is formed a circular half-opening bordered by a bead 407 in which a groove 408 is formed for the reception of a peripheral retaining rib belonging to the lens Le. This defines a half-ring B "for mounting the lens.
  • rear fittings 403 and front 405 intended to cooperate with the homologous fittings 303, 305 of the part 300 for the clipping of the assembly clips A.
  • the part 300 further comprises, extending at about 45 ° upwards and backwards from the base of the half-opening 410, a second occluding part or oblique screen E "which comprises a recess intended to receive the extension 312 of the half screen E '.
  • the recovery of the light flux emitted by the lamp can be further increased.
  • Such a solution in fact makes it possible to extend the mirror towards the front, in particular in the lower part, well beyond the focal plane of the lens, in the vicinity of which extends the upper edge of the screening screen. More precisely, the light rays returned towards the second focal point of the mirror by the regions of the mirror located furthest forward will again be returned to the first focal point, in order to increase the luminous flux actually emitted by the source in the region of said region. first home.
  • Figures 6 and 7 illustrate a second embodiment of the invention, which differs from that of Figures 2 to 5 essentially by a different arrangement of the lamp La.
  • the light output can be increased insofar as the solid angle, seen from the source, of the mirror part occupied by the lamp holder can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP96401351A 1995-06-22 1996-06-20 Kfz-Scheinwerfer nach dem Projektionsprinzip mit verbessertem Reflektor Expired - Lifetime EP0750156B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507487A FR2735848B1 (fr) 1995-06-22 1995-06-22 Projecteur du genre elliptique a miroir perfectionne pour vehicule automobile
FR9507487 1995-06-22

Publications (3)

Publication Number Publication Date
EP0750156A2 true EP0750156A2 (de) 1996-12-27
EP0750156A3 EP0750156A3 (de) 1997-05-28
EP0750156B1 EP0750156B1 (de) 2003-08-06

Family

ID=9480273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401351A Expired - Lifetime EP0750156B1 (de) 1995-06-22 1996-06-20 Kfz-Scheinwerfer nach dem Projektionsprinzip mit verbessertem Reflektor

Country Status (4)

Country Link
EP (1) EP0750156B1 (de)
DE (1) DE69629335T2 (de)
ES (1) ES2205006T3 (de)
FR (1) FR2735848B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286108A2 (de) 2001-08-21 2003-02-26 Hella KG Hueck & Co. Fahrzeugscheinwerfer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021109444A1 (de) 2021-04-15 2022-10-20 HELLA GmbH & Co. KGaA Geteilter Linsenhalter für eine Leuchtvorrichtung
DE102022103699A1 (de) 2022-02-17 2023-08-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Scheinwerfer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE427143C (de) * 1920-08-06 1926-03-27 Duncan James Ritchie Scheinwerferlampe, insbesondere fuer Automobile, mit Reflektor, Projektionslinse undObturator
EP0212211A2 (de) * 1985-08-17 1987-03-04 Hella KG Hueck & Co. Abgeblendeter Fahrzeugscheinwerfer mit einem ellipsoidförmigen Reflektor
FR2663406A1 (fr) * 1990-06-19 1991-12-20 Koito Mfg Co Ltd Phare de vehicule du type projecteur dans lequel la radiation de chaleur est amelioree.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE427143C (de) * 1920-08-06 1926-03-27 Duncan James Ritchie Scheinwerferlampe, insbesondere fuer Automobile, mit Reflektor, Projektionslinse undObturator
EP0212211A2 (de) * 1985-08-17 1987-03-04 Hella KG Hueck & Co. Abgeblendeter Fahrzeugscheinwerfer mit einem ellipsoidförmigen Reflektor
FR2663406A1 (fr) * 1990-06-19 1991-12-20 Koito Mfg Co Ltd Phare de vehicule du type projecteur dans lequel la radiation de chaleur est amelioree.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286108A2 (de) 2001-08-21 2003-02-26 Hella KG Hueck & Co. Fahrzeugscheinwerfer

Also Published As

Publication number Publication date
EP0750156A3 (de) 1997-05-28
DE69629335T2 (de) 2004-06-24
ES2205006T3 (es) 2004-05-01
FR2735848B1 (fr) 1997-08-22
DE69629335D1 (de) 2003-09-11
FR2735848A1 (fr) 1996-12-27
EP0750156B1 (de) 2003-08-06

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