EP1637801A2 - Dispositif d'éclairage pour véhicule automobile et procédé de fixation - Google Patents

Dispositif d'éclairage pour véhicule automobile et procédé de fixation Download PDF

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Publication number
EP1637801A2
EP1637801A2 EP05017295A EP05017295A EP1637801A2 EP 1637801 A2 EP1637801 A2 EP 1637801A2 EP 05017295 A EP05017295 A EP 05017295A EP 05017295 A EP05017295 A EP 05017295A EP 1637801 A2 EP1637801 A2 EP 1637801A2
Authority
EP
European Patent Office
Prior art keywords
housing
lens
lighting device
flat
adhesive
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
EP05017295A
Other languages
German (de)
English (en)
Other versions
EP1637801A3 (fr
EP1637801B1 (fr
Inventor
Jan Dipl.-Ing. Formanek
Thomas Dipl.-Ing. Hilsenbeck
Jiri Dipl.-Ing. Cernoch
Karsten Dipl.-Ing. Diekmann
Frank Dr. Ing. Merkelbach
Horst Wicker
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 Autotechnik sro
Hella GmbH and Co KGaA
Original Assignee
Hella Autotechnik sro
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 Autotechnik sro, Hella KGaA Huek and Co filed Critical Hella Autotechnik sro
Publication of EP1637801A2 publication Critical patent/EP1637801A2/fr
Publication of EP1637801A3 publication Critical patent/EP1637801A3/fr
Application granted granted Critical
Publication of EP1637801B1 publication Critical patent/EP1637801B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof

Definitions

  • the invention relates to a lighting device for motor vehicles with a light components bearing housing consisting of a plastic material, wherein the housing is connected at a front peripheral edge by gluing to a limited by the peripheral edge opening of the housing lens glass material.
  • the invention relates to a method for attaching a lens to a housing of a lighting device for motor vehicles, wherein the lens is peripherally connected to the housing.
  • a lighting device for motor vehicles is known from EP 0 589 189 B1, wherein light components, such as a reflector and a light source, are accommodated in a cup-shaped housing.
  • a front peripheral edge of the housing has a receiving groove, in which a foot of a transparent lens used and is mechanically connected by means of a laterally attached retaining clip.
  • the lens covers the limited by the peripheral edge opening of the housing completely.
  • protruding elevations are provided so that the lens is centered in the housing transversely to its Aufsetzraum.
  • a lighting device for motor vehicles with a light components, such as light source and reflector, supporting housing in which a permanently elastic sealing means is used at a front peripheral edge of the housing in a receiving groove, which serves as an adhesive bed for a projecting web a transparent lens is used.
  • the thickly introduced into the receiving groove sealant has only a limited adhesive effect; It primarily serves to seal between housing and lens.
  • To generate a required holding force of the peripheral edge of the housing is provided with a latching nose which engages behind the edge of the lens.
  • the lenses are usually formed from a pressed glass, which have relatively large manufacturing tolerances.
  • Object of the present invention is to provide a lighting device for motor vehicles and a method for attaching a lens to a housing of a lighting device, so that in a cost effective manner a secure and permanent attachment between a lens and a housing is guaranteed.
  • the lighting device in conjunction with the preamble of claim 1, characterized in that the lens has a flat edge surface, which by means of a curable and thermally elastic adhesive to form a flat adhesive strip is connected to a flat mounting surface of the housing.
  • the lens made of a thermoformed flat glass is fixed to a front edge of the housing by means of a curable adhesive only.
  • the adhesive surfaces of the light disk on the one hand and the housing on the other hand are flat and / or flat, with a flat adhesive strip extending between them.
  • the invention makes it possible that an otherwise conventional adhesive bed, which is fitted in a groove, is not required.
  • the edge region of the lens and the housing can thus be designed inexpensively.
  • a thermally elastic adhesive a long-term stable and intimate adhesive bond between the adhesive surfaces of the housing on the one hand and the lens on the other hand can be generated.
  • the thermally elastic adhesive is able to compensate for the different dimensions of the lens and the housing due to thermal stress.
  • the different thermal expansion coefficients are compensated for temperature changes due to the elasticity of the adhesive.
  • the flat edge surface of the lens and the planar mounting surface of the housing are arranged parallel to each other, wherein the adhesive layer running between them allows a permanent and secure connection.
  • the invention extends transversely to the adhesive layer or to the adhesive strip of the lens or the housing a spacer, which dictates the thickness of the adhesive strip.
  • the height of the spacer or the thickness of the adhesive strip depends on the choice of material of the lens and the housing. With increasing absolute difference between the coefficient of thermal expansion of the lens on the one hand and the housing on the other hand, the height of the spacer increases.
  • the flat edge surface of the lens which is acted upon by the adhesive layer, is continuous in a central main surface of the lens, so that the edge of the lens is free of unwanted protruding ridges.
  • the lens is made of a thermoformed flat glass, wherein a desired curvature of the lens is achieved by heating the glass material and taking advantage of its own weight in the deformation process.
  • the adhesive is formed as a moisture-curable one-component polyurethane adhesive, which is able to absorb material expansions of the component surfaces to be fastened in the event of temperature fluctuations.
  • the housing is preferably made of a thermosetting plastic material whose coefficient of thermal expansion differs only to a limited extent from the thermal expansion coefficient of the glass of the lens.
  • the housing is made of an LPP plastic material (UP-GF, BMC) or a polybuthylene terephtalate (PBT).
  • the lens has a laminating layer in a fastening region, so that an optical covering of the adhesive bond is provided.
  • the invention in conjunction with the preamble of claim 9, characterized in that in a front edge region of the housing on a flat mounting surface of the same a thermally elastic adhesive layer is applied, that the lens with a flat edge surface thereof to form a predetermined distance is applied to the planar mounting surface of the housing to the adhesive layer is held us in this position until the adhesive layer has cured.
  • the particular advantage of the method according to the invention is that only a single attachment step is required to form a thermally elastic adhesive layer between a planar mounting surface of the housing and a flat edge surface of the lens to connect the lens to the housing. As a result, sufficient tightness and strength can be achieved in a single step. An additional fixation by means of retaining clips is not required.
  • the lens is subjected to a hardening process before the fastening process.
  • the curing can be carried out thermally, chemically or by hut smoking, so that a sufficient thermal shock resistance is given for the lighting device.
  • a lighting device 1 according to the invention for motor vehicles is used in particular as a headlight for commercial vehicles, in which, according to FIG. 1, several light functions are integrated.
  • the lighting device 1 has four arranged in a row in the horizontal direction chambers 2, each forming light units to form different light functions. For example, a first lighting unit 3 for generating an additional high-beam function, a second lighting unit 4 for generating a fog light function, a third lighting unit 5 for generating a low beam function and a fourth lighting unit 6 for generating a static cornering light function or a position light function.
  • a first lighting unit 3 for generating an additional high-beam function
  • a second lighting unit 4 for generating a fog light function
  • a third lighting unit 5 for generating a low beam function
  • a fourth lighting unit 6 for generating a static cornering light function or a position light function.
  • the lighting units 3, 4, 5, 6 each have light sources 7 and reflectors 8, which are each enclosed in one of the respective lighting unit 3, 4, 5, 6 associated lighting unit housing 9, 10, 11.
  • the light sources 7 and the reflectors 8 form light components for generating a predetermined light distribution and are supported by the respective lighting unit housing 9, 10, 11.
  • the light unit housing 9, 10, 11 of the light units 3, 4, 5, 6 is preceded by a common frame 13, wherein between the light unit housings 9, 10, 11, an adapter 14 is provided for adjusting the front opening edge 15 of the light unit Housing 9, 10, 11 to a rear opening edge 16 of the frame 13.
  • the light units 3, 4, 5 is associated with an adapter 14, wherein the adapter 14 on at one of the opening edge 15 of the light unit housing 9, 10, 11 facing the end As well as the opening edge 16 of the frame 13 further end has a receiving groove 17 into which a fastening web 18 of the respective light unit housing 9, 10, 11 and the window frame 13 engages.
  • the circumferential receiving channel 17 has an adhesive bed 12 with a silicone material, so that in a known manner, a bond between the frame 13 and the adapter 14 on the one hand and the light unit housings 9, 10, 11 is given to the adapter 14 on the other.
  • the flat mounting surface 23 of the frame 13 is flush with the flat edge surface 22 of the lens 21 and extends to the same in parallel direction.
  • an adhesive layer 24 (sheet-like adhesive strip) is provided which extends between the flat edge surface at the edge 22 of the lens 21 and the mounting surface 23 of the frame 13 extends with a constant thickness.
  • the adhesive layer 24 is formed by a thermally elastic adhesive, preferably a one-component polyurethane adhesive. The adhesive 24 is formed so thick that expansions of the lens 21 and the frame 13 are compensated as a result of thermal stress.
  • a spacer 25 is provided, which is formed as a circumferential spacer rib or as a plurality of spaced edge arranged spaced cam, which protrude from the mounting surface 23 of the frame 13 and are integrally formed thereon.
  • the spacer 25 prevents over-swelling of the adhesive 24 in a decorative region of the lens 21, which is formed by a central major surface 26. From the central main surface 26 extends continuously the peripheral edge surface 22 which extends between a peripheral edge 27 of the lens 21 and a line along which the spacer 25 extends.
  • the height of the spacer 25 may be in a range of 2 mm to 8 mm.
  • the flat edge surface 22 of the lens 21 is provided with a laminating layer 28 applied by a screen printing process. It allows a cover of the adhesive bond 24 and has a predetermined color, such as silver on.
  • the adhesive layer 24 forms an adhesive strip which extends in a width of a few millimeters edge of the housing 19 and the lens 21 and of the Edge edge 27 and the spacer 25 is laterally limited.
  • the lens 21 is formed of a thermoformed flat glass.
  • the flat glass can be produced for example by means of a floating process (float process).
  • float process float process
  • the flat flat glass blank is heated, wherein the deformation is formed due to the weight of the flat glass part with the aid of suitable investment tools.
  • the finished fitting is subsequently heated to the extent that it does not lose its shape. There is a slow cooling of the fitting, occur in which less stress in the glass. By this hardening process, a thermal shock resistance .DELTA.T of greater than 110 Kelvin can be generated.
  • the laminating layer 28 is optionally applied on the inner flat edge surfaces 22 of the light disk 21 (in the fastening region) by means of a screen printing process.
  • a moisture-curable one-component polyurethane adhesive is applied to the planar mounting surface 23.
  • the spacer 25 prevents application of the adhesive layer 24 in the region of the central main surface 26 of the lens 21.
  • the lens 21 is applied by abutment of the flat edge surface 22 to the spacer 25 to the front edge 23 of the housing 19 and held in this position for so long until the adhesive layer 24 is cured.
  • the fastening process is now complete.
  • the housing 19, in particular the frame 13, is made of a thermosetting or thermoplastic plastic material.
  • the thermoset material may be formed as LPP (UP-GF, BMC) and the thermoplastic material as PBT (Polybuthylene terephthalate).
  • the laminating layer 28 is preferably applied to the lens 21 only when the lens 21 forms a gap to an edge of the body opening in the mounted state of the lighting device 1 within a body opening. If the edge of the body opening covers the adhesive strip, the laminating layer 28 can be dispensed with.
  • the lens 21 may also be directly connected to a front edge of the light unit housing 9, 10, 11.
  • This embodiment is suitable for applications in which a frame 13 or an adapter 14 can be dispensed with.

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)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP05017295A 2004-09-17 2005-08-09 Dispositif d'éclairage pour véhicule automobile et procédé de fixation Active EP1637801B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004045590A DE102004045590A1 (de) 2004-09-17 2004-09-17 Leuchtvorrichutng für Kraftfahrzeuge und Befestigungsverfahren

Publications (3)

Publication Number Publication Date
EP1637801A2 true EP1637801A2 (fr) 2006-03-22
EP1637801A3 EP1637801A3 (fr) 2006-12-06
EP1637801B1 EP1637801B1 (fr) 2008-01-09

Family

ID=35447425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05017295A Active EP1637801B1 (fr) 2004-09-17 2005-08-09 Dispositif d'éclairage pour véhicule automobile et procédé de fixation

Country Status (4)

Country Link
EP (1) EP1637801B1 (fr)
AT (1) ATE383545T1 (fr)
DE (2) DE102004045590A1 (fr)
ES (1) ES2299930T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277717A (zh) * 2013-06-03 2013-09-04 苏州荣文库柏光电科技有限公司 一种投光灯
EP2662614A1 (fr) 2012-05-10 2013-11-13 Hella Fahrzeugteile Austria GmbH Phare pour véhicules
WO2018161989A1 (fr) * 2017-03-08 2018-09-13 HELLA GmbH & Co. KGaA Dispositif d'éclairage pour véhicules et procédé de montage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201024607A (en) * 2008-12-19 2010-07-01 Crownmate Technology Co Ltd Thin LED lamp structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846990A1 (de) 1978-10-28 1980-05-08 Westfaelische Metall Industrie Fahrzeugscheinwerfer
EP0589189A1 (fr) 1992-08-22 1994-03-30 Hella KG Hueck & Co. Projecteur pour véhicule automobile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7209958U (de) * 1973-08-30 Bosch R Gmbh Kraftfahrzeug Scheinwerfer
DE4445187A1 (de) * 1994-12-17 1996-06-20 Hella Kg Hueck & Co Scheinwerfer für Fahrzeuge
FR2749237B1 (fr) * 1996-06-04 1998-08-21 Valeo Vision Dispositif d'eclairage ou de signalisation a joint surmoule pour vehicule
JPH11329011A (ja) * 1998-05-12 1999-11-30 Koito Mfg Co Ltd 自動車用ヘッドランプ
DE29809618U1 (de) * 1998-05-28 1998-07-30 Hella Kg Hueck & Co Scheinwerfer für Fahrzeuge, insbesondere Zusatzscheinwerfer für Kraftfahrzeuge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846990A1 (de) 1978-10-28 1980-05-08 Westfaelische Metall Industrie Fahrzeugscheinwerfer
EP0589189A1 (fr) 1992-08-22 1994-03-30 Hella KG Hueck & Co. Projecteur pour véhicule automobile

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2662614A1 (fr) 2012-05-10 2013-11-13 Hella Fahrzeugteile Austria GmbH Phare pour véhicules
CN103277717A (zh) * 2013-06-03 2013-09-04 苏州荣文库柏光电科技有限公司 一种投光灯
CN103277717B (zh) * 2013-06-03 2016-06-01 苏州荣文库柏光电科技有限公司 一种投光灯
WO2018161989A1 (fr) * 2017-03-08 2018-09-13 HELLA GmbH & Co. KGaA Dispositif d'éclairage pour véhicules et procédé de montage
US10935204B2 (en) 2017-03-08 2021-03-02 HELLA GmbH & Co. KGaA Lighting device for vehicles having an adaptor mounting a lens to a vehicle lamp housing at the periphery thereof

Also Published As

Publication number Publication date
EP1637801A3 (fr) 2006-12-06
DE102004045590A1 (de) 2006-03-23
ES2299930T3 (es) 2008-06-01
ATE383545T1 (de) 2008-01-15
EP1637801B1 (fr) 2008-01-09
DE502005002470D1 (de) 2008-02-21

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