EP1544538B1 - Kfz-Scheinwerfer mit einem Lampenträger - Google Patents

Kfz-Scheinwerfer mit einem Lampenträger Download PDF

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Publication number
EP1544538B1
EP1544538B1 EP04293038A EP04293038A EP1544538B1 EP 1544538 B1 EP1544538 B1 EP 1544538B1 EP 04293038 A EP04293038 A EP 04293038A EP 04293038 A EP04293038 A EP 04293038A EP 1544538 B1 EP1544538 B1 EP 1544538B1
Authority
EP
European Patent Office
Prior art keywords
ring
light source
reflector
side wall
locking
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.)
Not-in-force
Application number
EP04293038A
Other languages
English (en)
French (fr)
Other versions
EP1544538A1 (de
Inventor
Jean-Louis Velay
Benoît 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. Its main purpose is to facilitate the establishment of the light source on a projector device.
  • All of the projectors that have just been mentioned comprise at least one light source and a reflector comprising at least one optical system, each optical system being each composed of a light source associated with a reflector composed of a set of surfaces.
  • reflective devices whose arrangement and orientation are defined 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 several concentric cylindrical portions 103; fixing lugs 104 are arranged radially around a periphery of the cylindrical portion of the base which is furthest from the bulb 101.
  • the fixing lugs are three in number and are evenly distributed around the periphery of the base.
  • the three fixing lugs 104 may be of whose lateral part is not curved.
  • the second ring has a circular central orifice 207, which is completed by three recesses 208.
  • the recesses 208 are used for the introduction of the fixing lugs 104 in the collar 203. They can be of variable size, depending on the size of the leg 104 which 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, that is to say that, considered separately, they constitute a complete loop around a central orifice.
  • Document US Pat. No. 4,947,294 shows an exemplary embodiment of such a collar.
  • the flange 203 was made of a thermoplastic material; it had to be secured to the reflector 200 by means of various fastening elements, screws, rings ... Due to the reduction of the size of the reflectors used, the thermal stresses have evolved, and the thermoplastic materials do not prove more heat-resistant enough to withstand the temperature concentrations observed on a projector device turned on for a while.
  • the collars made of thermoplastic material were then replaced by collars made of materials more resistant to heat, for example aluminum, magnesium or various metal alloys. In addition to their resistance to heat, the manufacture of fastening flanges in such materials has made it possible to produce one-piece projecting devices, in which the reflector made of these same materials and the fastening flange constitute a single piece obtained by molding.
  • 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 all 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 Figure 1 .
  • the light source 100 is intended to be fixed on a reflector, of the type shown in FIGS. 2 and 3 by a single fastening operation, decomposable into a translational movement, to introduce the light source bulb through the light source. a cavity at the top of the reflector, combined with a rotational movement, for locking the light source on the reflector.
  • a reflector 200 in which the light source 100 has been placed, is represented at different angles.
  • the reflector 200 consists of an outer face 201, and a non-visible inner face.
  • the inner face is also called the optical surface of the reflector: it is it which is responsible for reflecting the light rays emitted by the light source 100 when the latter is fixed on the reflector 200 and the bulb 101 radiates.
  • the reflector 200 has a circular opening 202 formed approximately at its top. Typically, there is a fastening flange 203 at the opening 202.
  • the fastening collar serves as a 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 facing the opening of the reflector, of 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.
  • Ring means a coin circular, or approximately circular, having a circular or approximately circular central orifice.
  • the fixing lugs rotate in the recesses 209, wedged between the first ring 204 and the second ring 205.
  • the light sources that can be used have high dimensional dispersions, especially at their base, or base; the fastening lugs may therefore rub strongly, or even hang, during the locking operation which is rendered difficult.
  • the positioning quality of the light source with respect to the optical surface, defined by a plane perpendicular to the optical axis of the projector device considered, is thus degraded.
  • Such a problem was not encountered with the use of thermoplastic materials in the manufacture of the fastening flanges, these materials being able to deform relatively easily to enable the locking operation.
  • the projector device solves the problems that have just been mentioned.
  • a projector device equipped with a flange for fixing a light source, said flange being firstly made of a material resistant to heat, and secondly characterized by a certain flexibility , comparable to that of the thermoplastic materials previously used, so that the locking operation of the light source on the projector device is done without excessive friction, unacceptable, fastening lugs.
  • the fastening flange especially at the level of the upper ring.
  • the latter is no longer closed, but has a set of discontinuities such that the upper ring has a set of sufficiently flexible blades to facilitate the locking operation.
  • the flexibility of the blades also provides a guarantee as to the quality of positioning of the light source with respect to the optical surface, the flexible tabs 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 characteristics and possibly one or more of the secondary characteristics which have just been mentioned.
  • a reflector 400 involved in the projector device according to the invention comprises in particular an outer face 401, an inner face 402 and a circular opening 403 formed approximately at its top.
  • the reflector 400 is intended to receive a light source of the type of that shown in FIG. 1.
  • the light source is intended to be received and held by a fixing flange 404, which, in the example in question, is slightly away from the opening 403: holding tabs 405 support the flange 404 within a few centimeters of the opening 403 so that a central space 406 is created between the flange and the opening 403, thus allowing a good evacuation of the generated heat by the light source.
  • the flange 404 is disposed directly at the level of the opening 403, as is the case in the state of the art shown in FIGS. 2 and 3.
  • the flange 404 consists of a first ring 407, said lower ring, flat, closed and facing 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 a circular side wall 409 connecting the first ring 407 to the second ring 408.
  • the second ring 408 has a central hole circular 410, which is completed by three recesses 411. As in the state of the art, the recesses 411 are used for the introduction of the fixing lugs 104 in the collar 404.
  • the second ring 408 is not closed: it has a set of discontinuities 412 which, considered separately, the second ring 408 does not constitute a complete loop around its central hole 410.
  • Disco 412 in the example shown, are three in number; they are, considering the direction of locking of the light source on the reflector 400, in continuity, the extension of the recesses 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 three in number, and are, considering the locking direction of the light source on the reflector 400, in continuity, the extension, discontinuities 412; said discontinuities being moreover extended over the entire thickness of the side wall 409, as well as the recesses 411.
  • Such an architecture makes it possible to obtain three flexible tabs 414, one end of which is close to each discontinuity 412 is free.
  • the flexible tabs 414 make it possible to obtain a structure of the upper ring 408 which is much less rigid than that of the state of the art.
  • the flexible tabs 414 are profiled: their thickness increases from their free end towards their end embedded in the side wall 409, as can be seen in FIG. 4. The stresses are thus homogeneously distributed. mechanical during the locking operation, eliminating any risk of breakage flexible tabs 414.
  • it is expected to have, at the free end of each flexible tab 414, a boss 415 directed towards the first 407.
  • the bosses 415 allow the flexible tabs 414 come to exert a homogeneous pressure on the base 103 of the light source so as to keep it ideally placed after the locking operation completed. Providing the bosses 415 at the ends of the flexible tabs 414 makes them easier to cross for the fastening lugs 104.
  • the non-return device opposes a rotational movement of the light source in a direction opposite to the locking direction.
  • the anti-return device consists of a piece 416 of the side 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 formed in the side wall 409 between the first ring 407 and the said zone. support 416 of the non-return device.
  • the non-return device is thus not in contact, at its support zone 416, with the first ring 407.
  • the non-return device therefore allows a certain freedom of movement, in a radial direction, so that it does not permanently block the light source 100 in the attachment flange 404.
  • a force makes it possible, thanks to the flexibility thus provided, to rotate in the direction opposite to the locking direction, for example to change the light source.
  • a locking abutment 419 which is in the form of a wall, contained in the thickness and height of the side wall 409; contacting a fastening tab 104 with one of the locking abutments 419 marks the end of the locking operation.
  • the projector device according to the invention therefore has the advantage of having a reflector associated with a flange which can be made in a single piece, in a material having good thermal properties to resist the heat released by the light source, while providing a great ease when performing the operation of locking the light source in the fastening flange.
  • the projector device according to the invention is able to accept the dimensional variations 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)

Claims (9)

  1. Scheinwerfervorrichtung mit insbesondere:
    - einer Lichtquelle (100) mit insbesondere einem Glaskolben (101), einem als Kolbenhalter dienenden Sockel (102) und einer Reihe radial zum Sockel angeordneter Befestigungsarme (104);
    - einem Reflektor (400) mit einer kreisförmigen Öffnung (403) zum Einführen des Kolbens (101), einem Befestigungskragen (404) zum Halten der Lichtquelle (100) nach einem Verriegeln der Lichtquelle, das bezüglich des Kragens (404) insbesondere in einer Drehbewegung der Lichtquelle (100) in einer Verriegelungsrichtung besteht, wobei der Befestigungskragen (404) aus einem ersten massiven flachen Ring (407) gegenüber der Öffnung (402) des Reflektors (400) und einem zweiten flachen Ring (408) gebildet ist, wobei der erste Ring (407), der zweite Ring (408) und die kreisförmige Öffnung (403) des Reflektors (400) konzentrisch sind, sowie aus einer kreisförmigen Seitenwand (409), die den ersten Ring (407) mit dem zweiten Ring (408) verbindet,
    wobei der zweite Ring (408) eine Reihe von Rücksprüngen (411) zum Einführen der Befestigungsarme (104) der Lichtquelle (100) aufweist,
    dadurch gekennzeichnet, dass jeder Rücksprung (411) in Bezug auf die Verriegelungsrichtung durch eine Unterbrechung (412) fortgesetzt wird, wobei jede Unterbrechung (412) des zweiten Rings (408) in Bezug auf die Verriegelungsrichtung durch eine Aussparung (413) der Seitenwand (409) fortgesetzt ist, derart, dass der zweite Ring (408) eine Reihe axial biegbarer Arme (414) aufweist.
  2. Vorrichtung nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass der Befestigungskragen (404) wenigstens ein Rückdrehsicherungselement aufweist, wobei jedes Rückdrehsicherungselement von einem Vorsprung (417) gebildet ist, der nach innen in den Kragen (404) gerichtet ist, um eine Bewegung eines der Befestigungsarme (104) in einer zur Verriegelungsrichtung entgegengesetzten Richtung zu verhindern, wobei jeder Vorsprung (417) in Höhe eines Bereichs (416) der Seitenwand (409) gehalten ist, der sich in Bezug auf die Verriegelungsrichtung vor einer der Aussparungen (413) der Seitenwand (409) befindet.
  3. Vorrichtung nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass jeder Bereich zum Halten eines Vorsprungs (417) von dem ersten Ring (407) entfernt ist, wobei eine Höhlung (418) in der Seitenwand (409) zwischen dem ersten Ring (407) und dem betreffenden Haltebereich (416) ausgebildet ist.
  4. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass jeder biegbare Arm (414) ein freies Ende aufweist, an dessen Ende ein Höcker (415) gegenüber dem ersten Ring (407) angeordnet ist,
    wobei jeder Höcker (415) dazu bestimmt ist, auf dem Sockel (102) der Lichtquelle (100) wenigstens nach dem Verriegeln in Anlage zu kommen.
  5. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass wenigstens einer der biegbaren Arme (414) profiliert ist.
  6. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass wenigstens eine Aussparung (413) der Seitenwand (409) einen Verriegelungsanschlag (419) aufweist, um in der Verriegelungsrichtung das Ende der Drehbewegung der Lichtquelle (100) bezüglich des Befestigungskragens (404) zu markieren.
  7. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der Reflektor (400) und der Befestigungskragen (404) ein einstückiges Teil bilden.
  8. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der Reflektor (400) und der Befestigungskragen (404) aus Aluminium, Magnesium oder einer aus wenigstens Aluminium und/oder Magnesium umfassenden Legierung bestehen.
  9. Kraftfahrzeugscheinwerfer, ausgestattet mit einer Scheinwerfervorrichtung nach wenigstens einem der vorhergehenden Ansprüche.
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
FR0315116A FR2864205B1 (fr) 2003-12-19 2003-12-19 Dispositif projecteur avec porte-lampe
FR0315116 2003-12-19

Publications (2)

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

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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
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

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
CN101556028B (zh) * 2008-04-09 2010-12-08 海洋王照明科技股份有限公司 投射灯

Family Cites Families (7)

* 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
FR2638406B1 (fr) * 1988-11-03 1990-12-07 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
DE10140267B4 (de) * 2001-08-16 2007-02-01 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
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
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

Also Published As

Publication number Publication date
FR2864205A1 (fr) 2005-06-24
FR2864205B1 (fr) 2006-10-27
DE602004001746D1 (de) 2006-09-14
ATE335164T1 (de) 2006-08-15
ES2270317T3 (es) 2007-04-01
DE602004001746T2 (de) 2007-10-04
EP1544538A1 (de) 2005-06-22

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