EP3832199A1 - Kfz-beleuchtungs- und / oder signalvorrichtung und zugehörige montageverfahren - Google Patents

Kfz-beleuchtungs- und / oder signalvorrichtung und zugehörige montageverfahren Download PDF

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Publication number
EP3832199A1
EP3832199A1 EP19425086.6A EP19425086A EP3832199A1 EP 3832199 A1 EP3832199 A1 EP 3832199A1 EP 19425086 A EP19425086 A EP 19425086A EP 3832199 A1 EP3832199 A1 EP 3832199A1
Authority
EP
European Patent Office
Prior art keywords
lighting
signaling device
light source
directional lens
led light
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.)
Withdrawn
Application number
EP19425086.6A
Other languages
English (en)
French (fr)
Inventor
Alessandro Saccà
Fabio Leone
Patrick Bianco
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.)
Marelli Automotive Lighting Italy SpA
Original Assignee
Marelli Automotive Lighting Italy SpA
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 Marelli Automotive Lighting Italy SpA filed Critical Marelli Automotive Lighting Italy SpA
Priority to EP19425086.6A priority Critical patent/EP3832199A1/de
Publication of EP3832199A1 publication Critical patent/EP3832199A1/de
Withdrawn legal-status Critical Current

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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
    • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/27—Attachment thereof
    • 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
    • F21V17/06—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the lampholder
    • 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
    • F21V17/16—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 by deformation of parts; Snap action mounting
    • F21V17/164—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 by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/15—Strips of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an automotive lighting and/or signaling device and the related assembly method.
  • automotive lighting and/or signaling device here is used with a very broad meaning in order to comprehend an automotive light, whether a rear or front automotive light, the latter also called headlight or lamp.
  • this comprises a position light, a turn signal light, a stop light, a rear fog light, a reverse light, a dipped-beam light, a high beam light and the like.
  • the term also means to comprise a map light, an instrument panel or part thereof; thus, the automotive lighting and/or signaling device may be positioned both inside and outside the vehicle.
  • said automotive lighting and/or signaling devices may be used both for lighting and for sending visual signals.
  • said devices comprise a plurality of lighting portions comprising LED light sources which emit beams of light rays.
  • An LED usually emits a light beam having a Lambertian distribution of the related light rays.
  • Such lenses often have an asymmetrical configuration in order to conveniently deflect the natural Lambertian distribution of the light beam generated by the LED.
  • the lens it is required for the lens to be applied close to the LED to cover it, scrupulously following both an orientation and a distance from the LED.
  • the lens is arranged so as to laterally surround and cover the LED at the top. Therefore, not only is the orientation to be complied with, but also the Cartesian coordinates of the lens on the plane of the printed circuit with which the LED itself is associated are to be complied with.
  • the known solutions provide assembling the LEDs on the related printed circuits and also of assembling the lenses on the same printed circuits about each LED.
  • the lenses are keyed and glued onto the printed circuit about each LED, for example with the same SMT surface mount technology used for assembling LEDs on the printed circuit (PCB).
  • a lighting and/or signaling device such as an automobile light, to which the following disclosure refers without however losing in generality, is indicated as a whole with 4.
  • the term lighting and/or signaling device may indifferently mean a rear automotive light or a front automotive light, the latter also called a headlight or lamp, comprising an external vehicle light having a lighting and/or signaling function, such as for example a position light, which may be a front, rear, side position light, a turn signal light, a stop light, a rear fog light, a high beam light, a dipped-beam light and the like.
  • a position light which may be a front, rear, side position light, a turn signal light, a stop light, a rear fog light, a high beam light, a dipped-beam light and the like.
  • lighting and/or signaling device also means an indoor map light, an instrument panel or part thereof, a display, etc.
  • the device may comprise the possibility of sending light signals, logos, but also words and lit messages of any kind.
  • the lighting and/or signaling device 4 comprises a container body or housing 8, usually made of a polymer material, which typically allows to fasten the lighting and/or signaling device 4 to the related vehicle or to any type of support.
  • the container body or housing 8 may have any shape and size, and also positioning: for example, the container body 8 may not be directly associated with the body or other external mountings of the associable vehicle.
  • the container body 8 may also be associated internally with the vehicle, for example on the dashboard, on the instrument panel, on the parcel shelf, and so on.
  • the container body 8 delimits a containment seat 12 which accommodates a plurality of components of said lighting and/or signaling device.
  • the containment seat 12 accommodates a plurality of light sources 16, preferably LED light sources, arranged to be supported in said containment seat 12.
  • a lenticular body 20 may be at least partially associated with the container body 8 so as to close said containment seat 12 which accommodates the at least one light source 16.
  • the lenticular body 20 may be external to the lighting and/or signaling device 4 so as to define at least an outer wall of the lighting and/or signaling device directly subjected to the atmosphere.
  • the lenticular body 20 closes the containment seat 12 and is adapted to be crossed by the light beam generated by the light sources 16 which is transmitted outside the containment seat 12.
  • the lenticular body 20 is made with a material which is at least partially transparent or semitransparent or translucent, one or more opaque portions being able to be included as well, in any case so as to allow the at least partial crossing of the light beam generated by the light source.
  • the material of the lenticular body 20 is a resin such as PMMA, PC and the like.
  • the at least one LED light source 16 is arranged to be supported on a printed circuit 24 in said containment seat 12.
  • Said LED light source 16 is configured to emit, through an emission head 28, a light beam comprising a plurality of light rays.
  • the emission head 28 indeed includes a light emission chip enclosed in a casing, also called package.
  • the casing gives the emission head a varied shape and serves to protect the chip.
  • the casing comprises at least a transparent portion for the passage of the light emitted by the chip and may be provided with specific electric and optical elements connected to the chip itself.
  • At least one directional lens 32 is associated to at least partially cover said LED light source 16 so as to directionally affect said light rays according to a predefined direction or spatial distribution. It is herein implied that the factory LED light source 16 does not include the directional lens 32 and it has its own light distribution.
  • the directional lens 32 is a further element which serves to modify the light distribution of the factory LED light source.
  • Said directional lens 32 advantageously is associated with the LED light source 16 by shape coupling to said emission head 28.
  • shape coupling means an elastic deformation of a fastening portion 40 of the directional lens 32, such as a pocket obtained in the directional lens 32, on the basis of a mold defined by the shape of the walls, for example side walls, of the casing of the emission head 28 so that such a pocket of the directional lens 32 and the side walls of the casing of the emission head 28 are pressed against one another, thus being mutually blocked.
  • Such a shape coupling prevents the related movement of the directional lens 32 with respect to the emission head 28.
  • a suitable glue may optionally be used to better seal the directional lens 32 on the emission head 28.
  • said shape coupling causes the centering and the orientation of the directional lens 32 with respect to the LED light source 16 during the connection thereof.
  • Centering and orientation mean that the directional lens 32 is to be positioned at an exact distance from the sides of the LED light source 16, with respect to a plane which is parallel to said printed circuit 24, in order to obtain the predetermined direction and/or spatial distribution of the light rays generated by the LED light source 16. Moreover, the orientation of the directional lens 32 with respect to a direction which is perpendicular to the same plane parallel to the printed circuit 24, is also to be complied with.
  • the directional lens 32 comprises an optical portion 36 shaped to deflect the light rays which are incident thereon according to a predetermined direction or pattern, and a fastening portion 40 provided with the pocket intended to obtain the shape coupling to the emission head 28 of the LED light source 16.
  • At least the fastening portion 40 of the directional lens 32 is made of an elastically cold deformable material so as to obtain a shape coupling to the emission head 28 of the LED light source 16, i.e. to the side walls of the casing of the emission head 28.
  • Elastically cold deformable material means a material which is elastically deformable at the assembly temperature of the lighting and/or signaling device, which normally is equal to room temperature.
  • At least the fastening portion 40 of the directional lens 32 preferably is made of a deformable polymer material to allow the fastening by shape coupling.
  • At least the fastening portion 40 of the directional lens 32 is made of silicone.
  • a directional lens 32 may also be provided, which comprises the optical portion 36 and the fastening portion 40, which are co-molded to each other in different materials, in which the material of the optical portion 36 is more rigid than the material of the fastening portion 40.
  • the optical portion 36 of the directional lens 36 usually is made of a rigid plastic (such as e.g. PMMA), while the fastening portion is made of an elastically yielding material to obtain the shape coupling to the emission head 28.
  • a rigid plastic such as e.g. PMMA
  • the fastening portion is made of an elastically yielding material to obtain the shape coupling to the emission head 28.
  • said shape coupling is a snap coupling.
  • shape coupling may also mean a coupling element of the directional lens 32, such as a pocket of the directional lens 32 shaped so as to be fastened by interference to the walls of the casing of the emission head 28, for example snap fastened.
  • a suitable glue may optionally be used to better prevent the related movement of the directional lens 32 with respect to the emission head 28.
  • said shape coupling may comprise at least one undercut 44 between the walls, for example side walls, of the emission head 28 of the LED light source 16 and the pocket shaped in the fastening portion 40 of the directional lens 32, with respect to a coupling or insertion direction of the directional lens 32 on the emission head 28.
  • Such an undercut may be shaped by taking advantage of a particular projection or groove or geometrical shape, of the walls of the casing, or by conveniently modifying/treating such walls of the casing, for example by means of a laser incision.
  • said insertion or coupling direction may be perpendicular to a support plane P on the printed circuit 24.
  • a geometrical shape may also be provided, in which said insertion or coupling direction is parallel to a support plane P on the printed circuit 24.
  • said shape coupling comprises at least one pin 48 of the fastening portion 40 which is engaged in a related hole in the printed circuit 24.
  • a fastening system of the pre-assembled element to the printed circuit 24 is an alternative method with respect to the fastening method of the pre-assembled element by means of SMT technique.
  • Said shape coupling preferably comprises a pair of pins 48 of the fastening portion 40 which are each engaged in a corresponding hole in the printed circuit 24.
  • the fastening portion 40 of the directional lens 32 comprises at least one pin 48 which is engaged in a recess 52 obtained on the emission head 28.
  • the so-called kinematic inversion may be provided, i.e. recess 52 is obtained on the fastening portion 40 of the directional lens 32 and the pin is obtained on the emission head 28.
  • Such a coupling between pin 48 and recess 52 not only obtains the fastening of the direction lens 32 on the emission head according to the predefined geometrical orientation, but also constitutes a lead and a guide for the coupling of the shape coupling between the directional lens 32 and the LED light source 16.
  • the present invention allows the drawbacks introduced in the known art to be overcome.
  • the automotive lighting and/or signaling device allows the directional lens to be pre-assembled on the LED: thereby, a quick and accurate positioning of the lens on the LED is obtained.
  • the light assembly process may therefore be automated with the advantage of pre-installing the lens on the related LED and then installing the pre-assembled element directly on the printed circuit.
  • the solution of the present invention instead provides a shape coupling which ensures sealing over time and which does not suffer from either vibrations or thermal shock over time.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP19425086.6A 2019-12-06 2019-12-06 Kfz-beleuchtungs- und / oder signalvorrichtung und zugehörige montageverfahren Withdrawn EP3832199A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19425086.6A EP3832199A1 (de) 2019-12-06 2019-12-06 Kfz-beleuchtungs- und / oder signalvorrichtung und zugehörige montageverfahren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19425086.6A EP3832199A1 (de) 2019-12-06 2019-12-06 Kfz-beleuchtungs- und / oder signalvorrichtung und zugehörige montageverfahren

Publications (1)

Publication Number Publication Date
EP3832199A1 true EP3832199A1 (de) 2021-06-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19425086.6A Withdrawn EP3832199A1 (de) 2019-12-06 2019-12-06 Kfz-beleuchtungs- und / oder signalvorrichtung und zugehörige montageverfahren

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EP (1) EP3832199A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001007828A1 (en) * 1999-07-21 2001-02-01 Teledyne Lighting And Display Products, Inc. Lighting apparatus
EP1376708A2 (de) * 2002-06-24 2004-01-02 Lumileds Lighting US, LLC Kantenausstrahlende Leuchtdiode und Linse
EP1467416A2 (de) * 2003-04-11 2004-10-13 Weldon Technologies, Inc. Hochleistungsleuchtdiode
US20110110097A1 (en) * 2009-11-09 2011-05-12 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led unit
US8525206B2 (en) * 2005-02-28 2013-09-03 Osram Opto Semiconductor Gmbh Illumination device
US20140209946A1 (en) * 2013-01-29 2014-07-31 Hon Hai Precision Industry Co., Ltd. Light emitting diode package and method for manufacturing the same
WO2015110927A1 (en) * 2014-01-23 2015-07-30 Koninklijke Philips N.V. Light emitting device with self-aligning preformed lens

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001007828A1 (en) * 1999-07-21 2001-02-01 Teledyne Lighting And Display Products, Inc. Lighting apparatus
EP1376708A2 (de) * 2002-06-24 2004-01-02 Lumileds Lighting US, LLC Kantenausstrahlende Leuchtdiode und Linse
EP1467416A2 (de) * 2003-04-11 2004-10-13 Weldon Technologies, Inc. Hochleistungsleuchtdiode
US8525206B2 (en) * 2005-02-28 2013-09-03 Osram Opto Semiconductor Gmbh Illumination device
US20110110097A1 (en) * 2009-11-09 2011-05-12 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led unit
US20140209946A1 (en) * 2013-01-29 2014-07-31 Hon Hai Precision Industry Co., Ltd. Light emitting diode package and method for manufacturing the same
WO2015110927A1 (en) * 2014-01-23 2015-07-30 Koninklijke Philips N.V. Light emitting device with self-aligning preformed lens

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