EP1544538A1 - Kfz-Scheinwerfer mit einem Lampenträger - Google Patents

Kfz-Scheinwerfer mit einem Lampenträger Download PDF

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Publication number
EP1544538A1
EP1544538A1 EP04293038A EP04293038A EP1544538A1 EP 1544538 A1 EP1544538 A1 EP 1544538A1 EP 04293038 A EP04293038 A EP 04293038A EP 04293038 A EP04293038 A EP 04293038A EP 1544538 A1 EP1544538 A1 EP 1544538A1
Authority
EP
European Patent Office
Prior art keywords
ring
light source
projector device
locking
reflector
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
EP04293038A
Other languages
English (en)
French (fr)
Other versions
EP1544538B1 (de
Inventor
Jean-Louis Velay
Benoít Lery
Jonathan Blandin
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 EP1544538A1 publication Critical patent/EP1544538A1/de
Application granted granted Critical
Publication of EP1544538B1 publication Critical patent/EP1544538B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/10—Protection of lighting devices
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/194—Bayonet attachments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices
    • F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps

Definitions

  • the present invention relates to a projector device equipped with a lamp holder for receiving and maintaining a light source. She has essentially to facilitate the installation of the light source on a projector device.
  • the set of projectors that have just been mentioned comprise at least one light source and a reflector comprising at least least one optical system, each optical system being composed each of a light source associated with a reflector composed of a set of reflecting surfaces whose layout and orientation are defined by to produce a particular light beam.
  • a light source 100 essentially comprises a bulb 101, fixed on a base 102 serving as a bulb holder.
  • the base 102 may consist of a plurality of concentric cylindrical portions 103; fastening lugs 104 are arranged radially around a circumference of the cylindrical part of the base that is farthest from the bulb 101.
  • the fixing brackets are three in number and are regularly distributed over around the base.
  • the three fixing lugs 104 may be of variable dimensions to perform a foolproofing during an operation of fixing on a support of bulbs.
  • a connector 105 allowing the power supply of the bulb 101 is secured to the base 102.
  • the connector 105 is for example made in the form of a bend.
  • the present invention is applicable to the whole of the projectors devices, mentioned above, which are equipped with light sources whose fixing lugs are arranged radially on a base of the light source, as shown in FIG. figure 1.
  • the light source 100 is intended to be fixed on a reflector, of the type shown in Figures 2 and 3 by an operation of unique interlocking, decomposable into a translation movement, for introduce the bulb of the light source through a cavity at the top of the reflector, combined with a rotational movement, for lock the light source on the reflector.
  • a reflector 200 in which the source has been placed 100, is represented at different angles.
  • the reflector 200 consists of an outer face 201, and a non-visible inner face.
  • the inner side is also called the optical surface of the reflector: it is it who is responsible for reflecting the light rays emitted by the source 100 when the latter is fixed on the reflector 200 and that the bulb 101 radiates.
  • the reflector 200 has a circular opening 202 arranged approximately at its summit. Typically, we have a collar 203 at the level of the opening 202.
  • the fastening flange serves of lamp holder element.
  • the flange 203 used in the state of the art, consists of a first ring 204, said lower ring, flat, closed and opposite the opening of the reflector, a second ring 205, said upper ring, flat and closed, the first ring 204, the second ring 205 and the circular opening 202 of the reflector 200 being concentric, and a circular side wall 206 connecting the first ring 204 to the second ring 205.
  • a ring designates a circular piece, or approximately circular, having a circular central orifice, or approximately circular.
  • flat rings we designate the rings whose lateral part is not curved.
  • the second ring has a circular central orifice 207, which is completed by three setbacks 208.
  • the setbacks 208 serve to the introduction of the fixing lugs 104 into the collar 203. They can be of variable size, depending on the size of the bracket 104 they must accommodate.
  • the circular side wall 206 has three recesses 209 which create a space allowing the rotation of the fixing lugs 104 during a rotational movement of the light source 100 relative to the reflector 200 to perform the locking operation.
  • the first ring 204 and the second ring 205 are closed, it is to say that, considered separately, they constitute a complete loop around a central hole.
  • the flange 203 was made of a thermoplastic material; she had to to be secured to the reflector 200 by means of different elements of fixation, screw type, rings ... Due to the reduction in the size of reflectors used, thermal stresses have evolved, and the materials thermoplastics are no longer resistant enough to heat for withstand the observed temperature concentrations on a device projector on for a while.
  • the collars in material thermoplastics were then replaced by collars made in materials that are more heat-resistant, for example aluminum, magnesium or various metal alloys. In addition to their resistance to heat, manufacture of fastening flanges in such materials rendered possible the realization of single-piece projectors, where the reflector, realized in these same materials, and the fastening flange constitute a single piece obtained by molding.
  • the legs of fastening rotates in the recesses 209, wedged between the first ring 204 and the second ring 205.
  • the light sources likely to be used have strong dispersions dimensional, especially at their base, or base;
  • the paws fasteners may therefore strongly rub or even lock when the locking operation which is rendered difficult.
  • the quality of positioning of the light source with respect to the optical surface, defined by a plane perpendicular to the optical axis of the headlamp considered, is thus degraded.
  • Such a problem was not encountered with the use of thermoplastic materials in the manufacture of collars these materials can be deformed relatively easily for allow the lock operation.
  • the projector device makes it possible to solve problems that have just been mentioned.
  • a projector device equipped with a collar for fixing a source light said collar being on the one hand made of a material resistant to heat, and secondly characterized by a certain flexibility, comparable to that of thermoplastic materials previously used, so that the source lock operation light on the projector device is done without excessive friction, crippling, fastening lugs.
  • the fastening flange especially at the level of the upper ring.
  • the latter is no longer closed, but presents a set of discontinuities such as the upper ring has a set of blades flexible enough to facilitate the lock operation.
  • the flexibility of the blades also brings a guarantee as to the positioning quality of the light source screw to screw of the optical surface, the flexible legs exerting a uniform support on the base of the light source.
  • Another object of the invention is a motor vehicle equipped with a projector device having the main features and possibly one or more of the secondary characteristics that have just been mentioned.
  • a reflector 400 intervening in the device projector according to the invention comprises in particular an external face 401, a internal face 402 and a circular opening 403 arranged approximately at its summit.
  • the reflector 400 is intended to receive a light source of the type shown in Figure 1.
  • the source luminaire is intended to be received and maintained by a collar of 404, which in this example is slightly far from the opening 403: holding tabs 405 support the collar 404 to a few inches from the opening 403 so that a central space 406 is created between the flange and the opening 403, thereby allowing a good evacuation of the heat generated by the light source.
  • the flange 404 is disposed directly at the opening 403, as is the case in the state of the art shown in FIGS. 2 and 3.
  • the collar 404 is consisting of a first ring 407, said lower ring, flat, closed and in view of the opening 403 of the reflector 400, a second ring 408, said upper ring, flat, the first ring 407, the second ring 408 and the circular opening 403 of the reflector 400 being concentric, and of a circular side wall 409 connecting the first ring 407 to the second ring 408.
  • the second ring 408 has a circular central hole 410, which is completed by three setbacks 411.
  • the recesses 411 are used for the introduction of the legs of fixation 104 in the collar 404.
  • the second ring 408 is not closed: it has a set of discontinuities 412 which make that, considered separately, the second ring 408 does not constitute a complete loop around his central orifice 410.
  • the discontinuities 412 in the example shown, are three in number; they are found, considering the direction of locking of the light source on the reflector 400, in the continuity, the extension of the setbacks 411.
  • the circular side wall 409 has three recesses 413 which create a space allowing the rotation of the fixing lugs 104 during the lock operation.
  • the recesses 413 are also at number of three, and are found, considering the locking direction of the light source on the reflector 400, in the continuity, the extension, discontinuities 412; said discontinuities being otherwise extensive over the entire thickness of the side wall 409, as the recesses 411.
  • Such an architecture makes it possible to obtain three flexible tabs 414, of which an end close to each discontinuity 412 is free.
  • the paws flexible 414 allow to obtain a structure of the upper ring 408 much less rigid than that of the state of the art.
  • the flexible tabs 414 are profiled: their thickness increases from their free end to their end embedded in the side wall 409, as can be seen in FIG. thus distributes, in a homogeneous way, the mechanical stresses during the locking operation, eliminating any risk of breakage of the legs 414.
  • the bosses 415 allow flexible tabs 414 to come to exert a homogeneous pressure on the base 103 of the source luminous so as to maintain it ideally placed once the operation locking completed. Having the 415 bosses at the end flexible tabs 414 makes them easier to cross for the legs of fixing 104.
  • the anti-return device opposes a movement rotation of the light source in a direction opposite to the direction of locking.
  • the non-return device consists of a piece 416 of the wall 409 which then constitutes a support zone of a protuberance 417 oriented towards the inside of the collar 404. It is arranged, considering the opposite direction of the locking direction, in the extension of one of the discontinuities 412 and one of the recesses 413.
  • a cavity 418 is provided in the side wall 409 between the first ring 407 and said zone of support 416 of the non-return device.
  • the anti-return device is thus not in contact, at its support zone 416, with the first ring 407.
  • the anti-return device thus allows a certain freedom of movement, in a radial direction, so that it does not block definitively the light source 100 in the attachment collar 404.
  • a effort allows, thanks to the flexibility thus provided, to make a rotation in the opposite direction to the locking direction, for example to change the light source.
  • the device provides in at least one of the recesses 413 an abutment of lock 419, which is in the form of a wall, contained in the thickness and the height of the side wall 409; the coming into contact of a fixing lug 104 with one of the lock stops 419 marks the end of the lock operation.
  • the projector device according to the invention thus has the advantage of present a reflector associated with a collar that can be made in a one-piece piece, in a material having good properties to resist the heat released by the light source, while by offering a great ease when carrying out the operation of locking of the light source in the fixing collar.
  • Projector device according to the invention is capable of accepting variations dimensions of the lamps without disturbing the assembly or operation.

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)
EP04293038A 2003-12-19 2004-12-17 Kfz-Scheinwerfer mit einem Lampenträger Not-in-force EP1544538B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0315116 2003-12-19
FR0315116A FR2864205B1 (fr) 2003-12-19 2003-12-19 Dispositif projecteur avec porte-lampe

Publications (2)

Publication Number Publication Date
EP1544538A1 true EP1544538A1 (de) 2005-06-22
EP1544538B1 EP1544538B1 (de) 2006-08-02

Family

ID=34508733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04293038A Not-in-force EP1544538B1 (de) 2003-12-19 2004-12-17 Kfz-Scheinwerfer mit einem Lampenträger

Country Status (5)

Country Link
EP (1) EP1544538B1 (de)
AT (1) ATE335164T1 (de)
DE (1) DE602004001746T2 (de)
ES (1) ES2270317T3 (de)
FR (1) FR2864205B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101556028B (zh) * 2008-04-09 2010-12-08 海洋王照明科技股份有限公司 投射灯

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007022028B4 (de) * 2007-05-11 2016-10-20 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Fahrzeug, insbesondere Kraftfahrzeugscheinwerfer
CN101660723B (zh) * 2008-10-10 2011-08-10 海洋王照明科技股份有限公司 具有减振装置的投射灯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1522356A (fr) * 1967-03-09 1968-04-26 Sev Marchal Dispositif de montage de lampe pour projecteur d'automobile
FR2638406A1 (fr) * 1988-11-03 1990-05-04 Neiman Sa Projecteur pour vehicule automobile
US4947294A (en) * 1989-04-24 1990-08-07 General Motors Corporation Headlamp assembly
US5010455A (en) * 1990-05-07 1991-04-23 General Motors Corporation Headlamp assembly
US6027236A (en) * 1997-12-04 2000-02-22 Honda Giken Kogyo Kabushiki Kaisha Light assembly for a vehicle having a collar and socket locking connection
US6634777B1 (en) * 2002-04-24 2003-10-21 Guide Corporation Molded retention features for internal movable reflector lamps

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10140267B4 (de) * 2001-08-16 2007-02-01 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1522356A (fr) * 1967-03-09 1968-04-26 Sev Marchal Dispositif de montage de lampe pour projecteur d'automobile
FR2638406A1 (fr) * 1988-11-03 1990-05-04 Neiman Sa Projecteur pour vehicule automobile
US4947294A (en) * 1989-04-24 1990-08-07 General Motors Corporation Headlamp assembly
US5010455A (en) * 1990-05-07 1991-04-23 General Motors Corporation Headlamp assembly
US6027236A (en) * 1997-12-04 2000-02-22 Honda Giken Kogyo Kabushiki Kaisha Light assembly for a vehicle having a collar and socket locking connection
US6634777B1 (en) * 2002-04-24 2003-10-21 Guide Corporation Molded retention features for internal movable reflector lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101556028B (zh) * 2008-04-09 2010-12-08 海洋王照明科技股份有限公司 投射灯

Also Published As

Publication number Publication date
EP1544538B1 (de) 2006-08-02
FR2864205B1 (fr) 2006-10-27
DE602004001746D1 (de) 2006-09-14
ATE335164T1 (de) 2006-08-15
FR2864205A1 (fr) 2005-06-24
ES2270317T3 (es) 2007-04-01
DE602004001746T2 (de) 2007-10-04

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