EP1388710A1 - Reflektoreinrichtung für einen Kfz-Scheinwerfer - Google Patents

Reflektoreinrichtung für einen Kfz-Scheinwerfer Download PDF

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Publication number
EP1388710A1
EP1388710A1 EP03292000A EP03292000A EP1388710A1 EP 1388710 A1 EP1388710 A1 EP 1388710A1 EP 03292000 A EP03292000 A EP 03292000A EP 03292000 A EP03292000 A EP 03292000A EP 1388710 A1 EP1388710 A1 EP 1388710A1
Authority
EP
European Patent Office
Prior art keywords
reflector
support
reflector device
lamp holder
lamp
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
EP03292000A
Other languages
English (en)
French (fr)
Other versions
EP1388710B1 (de
Inventor
Jean-François Delourme
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 EP1388710A1 publication Critical patent/EP1388710A1/de
Application granted granted Critical
Publication of EP1388710B1 publication Critical patent/EP1388710B1/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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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
    • F21S41/39—Attachment 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
    • F21S41/10—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
    • 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
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes

Definitions

  • the present invention relates to a reflector device for a projector fitted to motor vehicles, which ensures durable projector and allows great maneuverability of the reflectors during their manufacture.
  • Its main purpose is to propose a realization particular reflective device which allows in particular to ensure a good ventilation for a light source that is placed in said reflecting device, and which allows manipulation on the chains of manufacturing that limits the risk of damage to a surface reflective reflector device.
  • the reflector device according to the invention can be indifferently used for any of these projectors. It will be more particularly described in the context of so-called elliptical projectors, in which a projection lens but it could also be integrated into the production of parabolic spotlights, in which no projection lens.
  • a projector 100 of the elliptical type that is to say involving a projection lens 103, has two parts main parts: a first part 101 is constituted by the lens 103 and by a lens holder 104.
  • a second portion 102 is constituted by a reflecting device of the state of the art.
  • Reflector device 102 is consisting of a single piece fulfilling both the reflector function at the level of a rounded portion 105, and of a lamp holder at a rear end 106.
  • the reflector 105 has the function of reflecting light signals produced by a light source placed in the heart of the rounded part to produce a light beam meeting the requirements imposed by different standards.
  • the lamp holder 106 has the function of keep the light source in an appropriate position within the reflector 105.
  • the junction between the lamp holder 106 and the reflector 105 is ensured by a cylindrical element 107.
  • the element cylindrical 107 is closed: its lateral part has no opening because to provide openings, the mold used to manufacture the device reflector should involve drawers and would be too complex and expensive to realize for the manufacture of this piece; the base (at the door lamp 106) and the top (at the level of the reflector 105) of the element cylindrical 107 are also, at least largely, plugged by different parts of the light source that is introduced into the reflector 105.
  • the cylindrical element 107 is closed, especially at the level of of its lateral part poses a first problem: the reflector device 102 is not ventilated enough, and this can interfere with prolonged the light source when turned on; indeed, the increase of the temperature is very fast in the reflector device 102, which can go until the destruction of the light source.
  • FIG. 2 A second problem encountered with the reflector devices of the state of the art is illustrated in Figure 2.
  • a section vertical of the reflector device 102 is shown.
  • An internal surface 201 of the reflector 105 is thus apparent.
  • the cylindrical element comprises including an outer wall 202, which was visible in Figure 1, and a inner wall 203.
  • the inner wall 203 also constitutes a cylinder closed.
  • the device according to the invention answers the two main problems which have just been exposed.
  • a reflector device which on the one hand ensures good ventilation of a light source placed in the reflecting device, and who else share facilitates the passage of the reflector device on production lines for coating an inner surface of the reflector with powder.
  • One of the interests of the reflector device according to the invention is that it can still be manufactured with molds, without subsequent machining operations of castings which could damage the inner surface of the reflector, the molds used, which can always be of simple design, that is to say especially without the presence of molding drawers.
  • a reflector device in which a reflector element and a lamp element are manufactured separately before being secured.
  • the reflective element thus manufactured has a set of supports that are arranged in such a way that light source subsequently installed in the reflecting device may be ventilated satisfactorily.
  • the lamp holder element is secured with the reflector element at the supports by means of centering pins and assembly rods.
  • the invention therefore essentially relates to a reflector device for motor vehicle headlamp, the reflector device having a reflector element comprising an internal reflecting surface, a outer surface, and an opening on a back part of the element reflector for introducing a light source, characterized in that the reflector device comprises a lamp holder element secured to the element reflector by means of a set of supports, said supports being arranged so as to create an open space between the lamp holder element and the reflective element.
  • at least one of said supports takes pressing on a base (311) of the reflector element (301), said base (311) being distinct from the outer surface (309) of the reflector element (301).
  • Another object of the invention is a motor vehicle equipped with a reflector device including one of the features that have just been mentioned.
  • Figure 3 shows a reflector device 300 according to the invention in vertical section, which is composed in particular of a reflector element 301 and a door element lamp 302.
  • the lamp holder element 302 and the reflector element 301 respectively comprise a first opening 314 and a second opening 315 (visible in particular in Figure 6) provided to leave a passage intended for the installation of a light source.
  • a first element 303, hatched in Figure 3 because it is located in the plane of section, and a second support member 304 are visible on this Fig.
  • the support elements which will be referred to as the column, are of elongated shape, ie they have a length l clearly greater than their height h, which in a particular example are respectively of the order of 60 millimeters and 15 millimeters; the thickness e of these columns being of the order of 2 millimeters at a first end 307, said fixing end, and of the order of 5 millimeters at level of a second end 306, said molded end.
  • the reflector device 300 comprises a third column 305, visible in FIG. 5.
  • the third column 305 is not visible in Figure 3 because it is aligned with the second column 304, that is, the planes, called support planes, containing the surfaces constituting the height of each of these columns are merged.
  • the first column 303 defines a plan containing a surface constituting its height, said plane being perpendicular to the support planes of the second column 304 and the third column 305.
  • This arrangement of the columns constitutes an excellent key at the time of assembly of the reflector element 301 and the lamp holder element 302, a single assembly position being possible. However, it is possible to make others otherwise foolproofing of the assembly of the reflector element 301 and the lamp holder element 302.
  • the arrangement of the support columns is such that it leaves appear an empty space 308 between these columns and between the door element 302 lamp and the reflector element 301.
  • the cylindrical element 107 of the state of the art has disappeared and was replaced by a fastening system of the door element lamp 302 involving support columns.
  • Such openings allow optimal ventilation of a light source introduced into the reflector device 300.
  • the molded end 306 of each column is in the shape of a outer surface 309 of the reflector element 301, as shown in FIG. This makes it possible to distribute all the pressure forces, which could practice on the different columns, on a maximum surface of the reflective element, thus limiting the risk of deformation of a surface internal 310, said photometric surface, for reflecting the signals light produced by the light source installed in the device reflector.
  • the molded end 306 at least one support column ends at a surface 311 used to attach a lens holder of the type of the one present at the The surface 311 is called the base of the reflector element 301. It does not constitute the back of the reflective inner surface 310. In illustrated example, this base 311 is disposed in an exit plane of the light beam out of the reflector device 301. Such an embodiment can further limit the mechanical constraints that could to damage the inner surface 310 of the reflector element 301.
  • One or more support columns may also have one or more reinforcing elements.
  • Such reinforcing elements are visible hatched in Figure 6: we see, on columns 303 and 304 an element central reinforcement 312, located approximately in the center of each column, and an inner reinforcing member 313, located near the openings 314 and 315 provided for introducing the light source.
  • the reinforcement elements 312 and 313 result in protuberances on the support columns. They serve on the one hand to limit the constraints mechanical that could damage the inner surface 310 of the element reflector 301, and on the other hand to evacuate, by convection, part of the heat generated by the light source.
  • the lamp holder element 302 is circular in shape and is capable of to receive in its thickness a ring-shaped element serving as a base to the light source, which is fixed, for example by a rotational movement, in the lamp holder element.
  • the lamp holder element 302 and the reflector element 301 including the columns of support are made in separate molds. This method of manufacture of the reflector device according to the invention also makes it possible to realize these two elements in different materials.
  • the reflector element 301 and the support columns are made of aluminum, the lamp holder element being made of an alloy of zinc and aluminum. Other metals, alloys or plastics can also be used in the realization of these parts, the element reflector may in particular be made of a material thermosetting or in a thermoplastic material.
  • each of these ends comprises a positioning pin 316 of a light source which will be arranged in the lamp holder element 302 and a centering rod and 317.
  • the positioning pin 316 ensures the correct positioning of the light source relative to the inner surface 310 of the reflector element 302.
  • Each centering and holding rod 317 is intended to be introduced into a specific opening of the element lamp holder 302. The presence of the pawn is useful for the game between a support column and the lamp holder element is zero or virtually zero. of the specific openings are also provided in the lamp holder element 302 to receive each positioning pin 316.
  • each centering and holding rod 317 and each positioning pin 316 are introduced into their respective aperture, a peel operation is performed.
  • This operation consists of deform the end of each centering and holding rod 317, to come crush it on 318 holding elements provided around each opening for receiving a holding rod.
  • Such a mechanism of fastening the lamp holder element 302 and the reflector element 301 make the association of these two pieces final. A detachment of these two pieces would necessarily result in the deterioration of at least one of the elements.
  • Another advantage inherent in the structure of the reflector device according to the invention is that the hooks 204, present on the production lines, can now grip at the openings 308, and thus no longer to damage the inner surface 310 of the reflector element 301.
  • the reflector with lamp holder according to the invention is very advantageous, especially because the studs on which the lamp holder is the top of the backrest preferably rest on the front of the reflector, there is therefore no (less) deformation of it during assembly.
  • the reflector and the lamp holder are preferably metallic (aluminum or alloy aluminum). This highly conductive material associated with the type of already described pads (“radiator fins”) promotes evacuation of the satisfactory heat.

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)
EP03292000A 2002-08-08 2003-07-21 Reflektoreinrichtung für einen Kfz-Scheinwerfer Expired - Lifetime EP1388710B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0210126A FR2843442B1 (fr) 2002-08-08 2002-08-08 Dispositif reflecteur pour projecteur de vehicule automobile
FR0210126 2002-08-08

Publications (2)

Publication Number Publication Date
EP1388710A1 true EP1388710A1 (de) 2004-02-11
EP1388710B1 EP1388710B1 (de) 2006-05-24

Family

ID=30129727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03292000A Expired - Lifetime EP1388710B1 (de) 2002-08-08 2003-07-21 Reflektoreinrichtung für einen Kfz-Scheinwerfer

Country Status (9)

Country Link
US (1) US6863426B2 (de)
EP (1) EP1388710B1 (de)
JP (1) JP2004071575A (de)
KR (1) KR20040014331A (de)
AT (1) ATE327471T1 (de)
BR (1) BR0302748B1 (de)
DE (1) DE60305391T2 (de)
ES (1) ES2265094T3 (de)
FR (1) FR2843442B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100427337C (zh) * 2004-08-05 2008-10-22 齐俊曌 车体轮廓照明灯
EP2053628A1 (de) * 2007-10-26 2009-04-29 Koninklijke Philips Electronics N.V. Gesockelte Lampe/Reflektoreinheit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487040A1 (fr) * 1980-02-29 1982-01-22 Marchal Equip Auto Projecteur d'eclairage notamment pour vehicules automobiles
DE3425291A1 (de) * 1984-07-10 1986-01-16 Robert Bosch Gmbh, 7000 Stuttgart Scheinwerfer fuer fahrzeuge, insbesondere fuer kraftfahrzeuge
EP0347065A2 (de) * 1988-06-17 1989-12-20 Mag Instrument Inc. Wärmeschirm
US5032966A (en) * 1989-05-02 1991-07-16 Nafa Light Kurt Maurer, Inhaberin Frau M. Maurer-Werren Bulb and reflector assembly
EP1043544A2 (de) * 1999-04-07 2000-10-11 Zizala Lichtsysteme GmbH Kfz-Scheinwerfer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113320A (en) * 1990-08-16 1992-05-12 Robart Enterprises, Inc. Spherically adjustable headlamp mounting system
JP2507834B2 (ja) * 1991-02-08 1996-06-19 株式会社小糸製作所 投射型自動車用ヘッドランプ
JP2559908B2 (ja) * 1991-02-08 1996-12-04 株式会社小糸製作所 投射型自動車用ヘッドランプ
JP2610088B2 (ja) * 1993-03-08 1997-05-14 株式会社小糸製作所 補助ランプ内蔵自動車用ヘッドランプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487040A1 (fr) * 1980-02-29 1982-01-22 Marchal Equip Auto Projecteur d'eclairage notamment pour vehicules automobiles
DE3425291A1 (de) * 1984-07-10 1986-01-16 Robert Bosch Gmbh, 7000 Stuttgart Scheinwerfer fuer fahrzeuge, insbesondere fuer kraftfahrzeuge
EP0347065A2 (de) * 1988-06-17 1989-12-20 Mag Instrument Inc. Wärmeschirm
US5032966A (en) * 1989-05-02 1991-07-16 Nafa Light Kurt Maurer, Inhaberin Frau M. Maurer-Werren Bulb and reflector assembly
EP1043544A2 (de) * 1999-04-07 2000-10-11 Zizala Lichtsysteme GmbH Kfz-Scheinwerfer

Also Published As

Publication number Publication date
DE60305391D1 (de) 2006-06-29
FR2843442B1 (fr) 2004-11-26
BR0302748B1 (pt) 2014-04-08
FR2843442A1 (fr) 2004-02-13
US20040027835A1 (en) 2004-02-12
ES2265094T3 (es) 2007-02-01
US6863426B2 (en) 2005-03-08
ATE327471T1 (de) 2006-06-15
BR0302748A (pt) 2004-08-24
KR20040014331A (ko) 2004-02-14
EP1388710B1 (de) 2006-05-24
JP2004071575A (ja) 2004-03-04
DE60305391T2 (de) 2007-03-08

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