EP4194745A1 - Leuchtmodul mit lichtleitern mit schwingungsdämpfender befestigung - Google Patents

Leuchtmodul mit lichtleitern mit schwingungsdämpfender befestigung Download PDF

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Publication number
EP4194745A1
EP4194745A1 EP22211823.4A EP22211823A EP4194745A1 EP 4194745 A1 EP4194745 A1 EP 4194745A1 EP 22211823 A EP22211823 A EP 22211823A EP 4194745 A1 EP4194745 A1 EP 4194745A1
Authority
EP
European Patent Office
Prior art keywords
light
light guide
inclined face
positioning means
support
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.)
Pending
Application number
EP22211823.4A
Other languages
English (en)
French (fr)
Inventor
Thomas BOSZNAI
Mehdi Madelaine
Thomas Duval
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 EP4194745A1 publication Critical patent/EP4194745A1/de
Pending 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
    • 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
    • F21S41/24—Light guides
    • 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
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • 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
    • F21S43/235—Light guides
    • 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
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • 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
    • F21V17/10—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
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • 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 technical field of the invention is that of light modules comprising light guides intended for motor vehicles.
  • the present invention relates in particular to an anti-vibration fixing means for these light guides.
  • Some light modules comprise at least one light guide intended to guide and transmit light generated by a light source such as a light-emitting diode (abbreviated as "DEL” in French, or designated “LED” from the English “Light -Emitting Diode”).
  • a light source such as a light-emitting diode (abbreviated as "DEL” in French, or designated “LED” from the English “Light -Emitting Diode”).
  • These light modules are mounted on motor vehicles and therefore subject to vibrations. These vibrations can cause displacements of the light guides which can then no longer perform their functions, in particular from a photometric point of view.
  • a light module comprising two fixing means: a first consisting of a clip holding one of the ends of the light guide and a second with V-shaped hooking teeth holding the second end of the light guide.
  • the invention offers a solution to the problems mentioned above, by making it possible to provide better fixing of the light guides allowing better resistance to vibration of the light guides and easier mounting.
  • the light guide can be assembled on the support part by means of the holding part, and by the cooperation of the first inclined face with the second inclined face.
  • the cooperation of the inclined faces makes it possible to stretch the light guide.
  • the light guide is locked in position by deformation. Indeed, during the installation of the light guide on the support part, the first inclined face and the second inclined face come into contact and the second inclined face slides along the first inclined face, which makes it possible to tension the guide from light.
  • the length of the light guide is thus stretched and adjusted to the length of the positioning means of the support part.
  • the length L of the light guide taken between the second inclined face of the holding part and the first end then becomes identical to the length L 0 of the positioning means.
  • the light guide is thus brought into contact with the support part.
  • This deformation of the light guide makes it possible to press the light guide against the support part, and in particular against the upper surface of the support element.
  • This plating allows better resistance to vibration of the light guide by making it possible to avoid any movement and any vibration.
  • the first inclined face forms an abutment element of the holding means and of the light guide in the direction of extension, which makes it possible to reinforce the holding in position of the light guide, and its resistance to vibration.
  • this attachment makes it possible to produce a space-saving light module.
  • the light module comprises several light guides held together by the holding part, and the support part comprises a support element and a positioning means associated with each light guide, the holding part comprising a second inclined face associated with the first inclined face of each positioning means.
  • the holding piece and the support piece are thus common to several light guides, and the assembly of the light guides on the support piece can thus be carried out simultaneously, which simplifies the assembly process. Also, unlike the prior art, there is no need to align each light guide in a hole.
  • the support elements and the positioning means are joined by the bottom of the support piece.
  • the light module comprises a light source arranged opposite the first end of the light guide and intended to emit light rays, the light guide being configured to receive the light rays via its first end and to guide light rays from the first end to the second end.
  • the light guide is thus fixed at its second end and therefore opposite the first end via which the light rays from the light source are introduced into the light guide. Fixing the light guide therefore does not interfere with the optical function of the light guide.
  • the light module comprises a light source arranged opposite the first end of each of the light guides.
  • the holding part comprises a wing extending longitudinally from a front edge located at the level of the second end of the light guide towards the first end of the light guide as far as a rear edge formed by the second inclined face, located at the distal end of the positioning means and vertically between the light guide and the bottom of the support piece.
  • the wing is therefore positioned against the side surface of the support element between the second edge of the support element and the distal end of the positioning means. It makes it possible to guarantee the correct attachment of the holding part to the support part.
  • the side surface of the support element is inclined, and the wing follows the inclination of the side surface of the support element.
  • the side surface widens from its upper surface to the bottom of the support part.
  • the retaining part is integral with the light guide.
  • the light guide and the holding part can for example be injected together in one piece. This guarantees the positioning accuracy of the holding part relative to the light guide.
  • the one-piece nature of the light guide with the retaining piece simplifies assembly.
  • the holding piece is attached to the light guide. It can be attached by clipping.
  • the first and second inclined faces form an angle of between 10° and 30° with respect to the normal to the direction of extension passing through the distal end.
  • This inclination allows easy assembly and gives tension sufficient for the light guide. Too little inclination would stretch the guide too much and too much inclination would not stretch it enough.
  • the support element comprises an additional lateral surface opposite the lateral surface
  • the support part comprises an additional positioning means of length Lo′, projecting with respect to said additional lateral surface in a direction transverse to the direction d. 'extension.
  • the positioning means and the additional positioning means are then arranged on either side of the positioning element.
  • the upper ends of the positioning means and of the additional positioning means form with the upper surface of the support element a channel in which the light guide is positioned. This channel allows easy positioning of the light guide.
  • the holding part comprises two second inclined faces arranged on either side of the light guide, one of the two second inclined faces cooperating with the first inclined face of the positioning means and the other of the two second inclined faces cooperating with the first inclined face of the additional positioning means when mounting the light guide and the retaining part on the support part.
  • the retaining piece may include an additional wing.
  • the wing and the additional wing are then arranged on either side of the light guide.
  • the wing and the additional wing make it possible to guarantee the positioning of the holding part and of the light guide on the support part.
  • the first inclined face comprises a width taken along the direction transverse to the direction of extension equal to a width of the second inclined face.
  • Another aspect of the invention relates to a method for mounting a light module with at least one of the preceding characteristics, characterized in that it comprises a step of positioning the second inclined face on an upper part of the first inclined face and a sliding step of the second inclined face until it reaches the surface of the support piece enabling the light guide to be energized.
  • An assembly 1 comprising a light module 2 and a box 4 is visible on the figure 1 .
  • the box 4 is intended to be fixed on a motor vehicle.
  • the light module 2 comprises light sources (not visible), light guides 20 and a support part 3.
  • the light module 2 comprises three light guides 20 and a light source associated with each guide of light 20. It is understood that the number of light guides is not limiting.
  • the light module 2 could alternatively comprise one, two or more than three light guides.
  • Each light guide 20 extends longitudinally along a direction of extension E between a first end 200 and a second end 201, opposite the first end 200.
  • the first end 200 of each light guide 20 is arranged opposite -vis the light source associated with the light guide 20, and is intended to receive the light rays emitted by the light source.
  • the first end 200 of the light guides 20 therefore forms an input face of the light guide 20.
  • the light guide 20 guides the light rays received from its first end 200 to its second end 201.
  • the light rays are transmitted by the light guides 20 outside the light module 2 in a direction transverse to the direction of propagation of the light rays in the light guides, that is to say in a direction transverse to the direction of extension E. This direction is represented by the arrow R on the figure 1 .
  • the first ends 200 of the light guides 20 are interconnected by a connecting piece 22 of the light module 2.
  • the connecting piece 22 is integral with the light guides 20.
  • the connecting piece 22 could be attached to the light guides 20, in particular by clipping.
  • the second ends 201 of the light guides 20 are interconnected by a holding part 21.
  • the holding part 21 is integral with the light guides 20. According to another alternative, the holding part 21 could be attached to the guides of light 20, in particular by clipping.
  • Support piece 3 is shown in picture 3 . It comprises a support element 13 for each of the light guides 20. Each support element 13 extends longitudinally along the direction of extension E between a first edge 30 located on the side of the first end 200 of the light guides 20 and a second edge 31 located on the side of the second end 201 of the light guides 20. Each support element 13 extends vertically between an upper surface 131 on which is positioned the light guide 20 associated with the support element 13 and a bottom 321 of the support part 3. The upper face 131 may in particular have a concave shape complementary to the shape of the light guide 20 which rests on it.
  • the support element 13 also comprises a side surface 132, and a surface additional side surface 132', opposite to side surface 132 in a direction transverse to direction of extension E, and transverse to the direction of emission of the light rays out of light module 2.
  • the support piece 3 also comprises a positioning means 32, and an additional positioning means 32' associated with each support element 13. It is understood that the support piece 3 could comprise only one positioning means 32 associated with the one or each of the support elements 13.
  • the positioning means 32 and the additional positioning means 32' all extend longitudinally along the direction of extension E from a proximal end 322 facing the first edge 30 towards a distal end 323 located at a distance d from the second edge 31
  • the positioning means 32 projects with respect to the side surface 132 of the support element 13 in a direction transverse to the direction of extension E
  • the additional positioning means 32' projects with respect to the additional lateral surface 132' of the support element in the direction transverse to the direction of extension E.
  • the positioning means 32 and the additional positioning means 32' associated with the same support 13 extend in the same direction but in opposite directions.
  • the positioning means 32 and the additional positioning means 32' all extend vertically between an upper end 324 and a lower end 325 facing the bottom 321 of the support part 3.
  • the upper end 324 of the positioning means 32 and of the additional positioning means extends vertically beyond the light guide 20, and is inclined towards the light guide 20.
  • the upper ends 324 of the positioning means and of the additional positioning means form with the upper surface 131 of the support element 13 a channel 320 in which the light guide 20 is positioned.
  • the upper end 324 at the level of the distal end 323 is more closer to the first end 200 of the light guide 20 than the lower end 325 at the level of the distal end 323 in the direction of extension E, so that the distal end 323 forms a first inclined plane 310.
  • the first ends 200 of the light guides 20 are attached to the support part 3, on the side of the first edge 30 of the support elements 13, via the connecting part 22.
  • the connecting part 22 with the light guides 21 will fit into the notches 301 when mounting the light guides 20 on the support part 3.
  • the connecting part 22 is positioned below the bottom 321 of the support 3, and the first ends of the light guides 20 are housed in the notches 301 of the support part 3.
  • Other means for fixing the first end 200 of the light guides 20 at the first edge 30 are possible without departing from the scope of the invention.
  • the second ends 201 of the light guides 20 are attached to the support part 3, on the side of the second edge 31 of the support elements 13, via the holding part 21.
  • the retaining part 21 comprises a wing 211 and an additional wing 211' each extending longitudinally from a front edge 221 located at the level of the second end 201 of the light guide 20 towards the first end 200 of the light guide 20 to a rear edge 222 formed by a second inclined face 210.
  • the second inclined face 210 of the wing 211, respectively of the wing additional 211' is located at the level of the distal end 323 of the positioning means 32, respectively at the level of the distal end 323 of the additional positioning means 32'.
  • the wing 211 and the additional wing 211' extend vertically between the light guide 20 and the bottom 321 of the support part 3.
  • the wing 211 and the additional wing 211' follow the inclination of the lateral surface 132, respectively of the additional lateral surface 132' of the support element 13.
  • the contact between the wings 211, 211' and the side surfaces 132, 132' guarantees good retention in position of the light guides 20.
  • the two second inclined faces 210 of the holding piece 21 associated with the light guide 20 considered have the same inclination as the first inclined faces 310 of the support part 3.
  • the first inclined faces 310 include a width taken in the direction transverse to the direction of extension equal to a width of the second inclined faces 210.
  • each positioning means 32 and additional positioning means 32' as well as the second inclined face 210 associated with the first inclined face 310 considered, form an angle of between 10° and 30° with respect to the normal to the direction of extension passing through the distal end of the positioning means 32 or the distal end of the additional positioning means 32' comprising the first inclined face 310 considered.
  • This angle makes it possible to guarantee the correct sliding of the second inclined face 210 on the first inclined face 310.
  • the two second inclined faces 210 of the retaining piece 21 are arranged on either side of the light guide 20 in question.
  • One of the two second inclined faces 210 is associated with the first inclined face of the positioning means 32 associated with the support element 13 supporting the considered light guide 20, and the other of the two second inclined faces 210 is associated with the first inclined face of the additional positioning means 32' associated with the support element 13 supporting the light guide 20 in question.
  • the retaining part 21 could comprise only one wing, and only one second inclined face, which would then cooperate with the first inclined face of the positioning means associated with the support element 13 supporting the light guide 20 in question.
  • Each light guide 20 comprises a length L taken between the second inclined face 210 and the first end 200 of the light guides 20 in the direction of extension.
  • the positioning means 32, and the additional positioning means 32' have a length L 0 and L 0 ' in the direction of extension.
  • the length L taken between the second inclined face 210 and the first end 200 for each of the light guides 20 is such that it is less than the length L 0 of the positioning means 32 and L0' of the additional positioning means 32' before the assembly of the light guide 20 and of the holding part 21 on the support part 3.
  • One can for example have L L 0 -1 mm before mounting the light guides 20 on the support part 3.
  • the length L taken between the second inclined face 210 and the first end 200 for each of the light guides 20 is equal to the length L 0 of the positioning means 32 and L 0 ' of the additional positioning means.
  • the second inclined face 210 slides on the first inclined face 310 so as to lengthen the light guides 20 until the light guides are each positioned on the upper surface 131 of the support element 13 which is associated with them.
  • the connecting part 22 with the first end of the light guides 20 are fitted into the notches 301 of the support part 3, then the light guides 20 are pivoted to come in contact with the support 3, and in particular with the upper surface 131 of the support element 13.
  • the light guides 20 then engage in the channels 320 formed by the upper surface 131 with the positioning means 32 and the means additional positioning 32'.
  • the second inclined faces 210 of the retaining part 21 come into contact with an upper part of the first inclined faces 310 of the support part 3 and by a sliding movement represented by the arrow M of the figure 4 , the light guides 20 are then stretched and then the retaining piece 21 is pressed against the bottom 321 of the support piece 3. Fixing screws 5 then block the retaining piece 21 and the light guides 20 to the supporting piece 3 .
  • the light guides 20 are thus held in tension and are not at risk of moving during vibrations of the vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP22211823.4A 2021-12-09 2022-12-06 Leuchtmodul mit lichtleitern mit schwingungsdämpfender befestigung Pending EP4194745A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2113221A FR3130355B1 (fr) 2021-12-09 2021-12-09 Module lumineux avec des guides de lumiere avec une fixation anti-vibration

Publications (1)

Publication Number Publication Date
EP4194745A1 true EP4194745A1 (de) 2023-06-14

Family

ID=80225443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22211823.4A Pending EP4194745A1 (de) 2021-12-09 2022-12-06 Leuchtmodul mit lichtleitern mit schwingungsdämpfender befestigung

Country Status (3)

Country Link
EP (1) EP4194745A1 (de)
CN (1) CN116293512A (de)
FR (1) FR3130355B1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007010023A1 (de) * 2006-03-03 2007-09-13 Fer Fahrzeugelektrik Gmbh Fahrzeugleuchte
FR3083846A1 (fr) * 2018-07-10 2020-01-17 Psa Automobiles Sa Module lumineux integre a un projecteur d’un vehicule.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007010023A1 (de) * 2006-03-03 2007-09-13 Fer Fahrzeugelektrik Gmbh Fahrzeugleuchte
FR3083846A1 (fr) * 2018-07-10 2020-01-17 Psa Automobiles Sa Module lumineux integre a un projecteur d’un vehicule.

Also Published As

Publication number Publication date
CN116293512A (zh) 2023-06-23
FR3130355A1 (fr) 2023-06-16
FR3130355B1 (fr) 2024-04-19

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