EP4371103A1 - Procédé de fabrication de dispositif lumineux pour véhicule - Google Patents

Procédé de fabrication de dispositif lumineux pour véhicule

Info

Publication number
EP4371103A1
EP4371103A1 EP22733014.9A EP22733014A EP4371103A1 EP 4371103 A1 EP4371103 A1 EP 4371103A1 EP 22733014 A EP22733014 A EP 22733014A EP 4371103 A1 EP4371103 A1 EP 4371103A1
Authority
EP
European Patent Office
Prior art keywords
layer
metal
light
visible side
colored layer
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
EP22733014.9A
Other languages
German (de)
English (en)
Inventor
Jens Humpenoeder
Peter Schmitz
Harald Tattko
Markus Klameth
Joannis Papadopoulos
Bernd-Uwe Kettemann
Fritz Wazula
Üsame Akkoca
Isabelle GLÄSEL
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.)
Mercedes Benz Group AG
Original Assignee
Mercedes Benz Group AG
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 Mercedes Benz Group AG filed Critical Mercedes Benz Group AG
Publication of EP4371103A1 publication Critical patent/EP4371103A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/06—Signs, boards or panels, illuminated from behind the insignia using individual cut-out symbols or cut-out silhouettes, e.g. perforated signs
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/044—Signs, boards or panels mounted on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/095—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/04—External Ornamental or guard strips; Ornamental inscriptive devices thereon
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • 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
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/08—Signs, boards or panels, illuminated from behind the insignia using both translucent and non-translucent layers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/04—Mobile visual advertising by land vehicles
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/04—Mobile visual advertising by land vehicles
    • G09F21/048—Advertisement panels on sides, front or back of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3425—Printed circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3475—Displays, monitors, TV-sets, computer screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/747—Lightning equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/006—Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/005—Manufacturers' emblems, name plates, bonnet ornaments, mascots or the like; Mounting means therefor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs

Definitions

  • the invention relates to a method for producing such an illuminated component and a vehicle with a component produced in this way.
  • Illuminated components in the area of vehicles are known from the prior art.
  • individual elements can be backlit and are fully or partially transparent in order to emit light, particularly in special patterns.
  • illuminated brand logos or the like can be implemented in the area of a vehicle radiator grille.
  • Such components are relatively complex in practice, since they require the actual component with the desired optical design on the one hand and an illumination unit assigned to the component on the other.
  • the structure is still relatively thick from its surface serving as the visible side on the one hand to its surface or rear side facing away from this visible side on the other hand. This is a considerable disadvantage, especially if it is to be used in the area of the outer paneling, where the installation space is extremely tight in many areas due to the desired design.
  • US 2018/0149321 A1 describes a comparable structure of a multi-component injection molding process, in which light-emitting diodes are also introduced.
  • the intermediate foils can contain different decorations or colors.
  • deep-drawing is used to create bulges for the light-emitting diodes, which are then covered by a transparent cover layer from the visible side.
  • WO 2020/168324 A2 describes a decorative component for a vehicle with a light-emitting finish.
  • a surface is placed on a light guide and provided with a metallic top layer so that light can be emitted through individual openings.
  • US 20180149321 A1 describes embodiments for light-emitting structures made from a plurality of three-dimensionally shaped film layers with recesses for lighting elements. Backlit surfaces can then be arranged over these.
  • US 2018/0264991 A1 describes a light arrangement which comprises two rear lights of a vehicle and an illuminated decorative strip arranged between them.
  • the cover glass is provided with a translucent chrome foil, which can be illuminated when the light is on.
  • a method for producing a flat paneling element for a vehicle is known from DE 102020005896 A1.
  • This comprises a translucent layered body with recesses or indentations, which was coated with transparent plastic, as a result of which the indentations form raised ornaments on the visible side.
  • the structure can be illuminated with light sources.
  • the object of the present invention is now to specify an improved manufacturing method for an illuminated component which makes it possible implement further design aspects easily and efficiently, especially with a space-saving component that is suitable for the outer paneling of a vehicle.
  • this object is achieved by a method for producing an illuminated component with the features in claim 1, and here in particular in the characterizing part of claim 1.
  • Advantageous refinements and developments of the method result from the dependent subclaims.
  • Claim 6 specifies a vehicle with a component manufactured in this way and also solves the problem.
  • the illuminated component to be produced for a vehicle comprises a multi-layer structure with integrated electronic components which include, among other things, light-emitting diodes as part of these electronic components.
  • one of the layers has a metal and can be formed, for example, as a metal layer or as a plastic layer provided with a metallization.
  • the plastic layer can be vapour-deposited with the metal, for example.
  • the illuminated component has an outer surface on the visible side, which is also referred to below as the front side.
  • the electronic components are now arranged on the side facing away from this visible side.
  • the layer containing the metal is covered in sections or partially by a colored layer on its surface facing the visible side, with the sections of the layer containing the metal not covered by the colored layer having a three-dimensional shape. They are therefore deformed out of the plane of the layer containing the metal, for example, but not necessarily, in the direction of the visible side.
  • the layer containing the metal itself does not have to lie within a geometric plane, but can run in a curved manner, with the three-dimensional shape thus exceeding or falling below the surfaces of this layer in order to achieve the desired effect.
  • light decoupling structures are arranged on the side or surface of the layer containing the metal facing away from the visible side.
  • Such light extraction structures can, for example, by Printing or embossing can be introduced into the layer containing the metal. They ensure that the light from the light-emitting diodes, which is located on the visible side behind the layer containing the metal and in particular behind the colored layer partially covering it on its visible side, decouples light via the light decoupling structures in the areas in which the colored layer is interrupted.
  • the method according to the invention for producing such an illuminated component now provides for the six basic method steps explained below in order to produce the illuminated component.
  • the layer containing the metal ie in particular the chrome foil
  • the layer containing the metal is partially provided with the color layer on the later visible side, which can be done in particular by printing, for example by screen printing.
  • some of the electronic components for example conductor tracks and the like, are then applied to a rear side of the layer containing the metal, which is remote from the later visible side.
  • the light decoupling structures are applied in the areas in which the layer containing the metal is not provided with the color layer on the opposite front side, ie in the areas that remain free of color. All of this can be done in a manner known per se, in particular by screen printing or, in the case of the light-coupling structures, also by embossing or the like.
  • the next process step electronic components that cannot be realized using one or more printed layers are assembled. This particularly affects light-emitting diodes, while other electronic components such as resistors, capacitors and the like along with the conductive traces are more common can also already be produced by printing the back of the layer containing the metal.
  • the three-dimensional shaping of the areas not provided with the colored layer takes place, in that they are shaped accordingly by deep-drawing or thermoforming, for example as three-dimensional structures in the direction of the later visible side beyond the colored layer.
  • the light-coupling structures when the light-coupling structures are embossed, in contrast to imprinting the light-coupling structures, for example using a screen printing process, the light-coupling structures can also only be introduced in this deep-drawing step, especially if this is done using suitable tools which, on the side facing away from the later visible side, emboss light-decoupling structures in the layer containing the metal, which layer can be designed in particular as chrome foil.
  • the base layer is then applied to the back of the layer containing the metal, in order to stabilize the previous structure on the one hand and to support the three-dimensionally shaped areas and at the same time securely enclose the electronic components.
  • this step can be carried out, for example, by back-injection molding or by attaching a further film and injecting the material for the base layer between this film and the layer containing the metal.
  • the visible side is provided with a transparent plastic as a top layer.
  • this cover layer can preferably be smooth, i.e. levels the previously three-dimensional design on the visible side back to a smooth surface, under which the three-dimensionality affects the underlying layers, so that these can be seen , but no projections arise, which can be detected haptically and / or carry the risk of increased dirt accumulation.
  • the transparent cover layer is applied by flooding or overspraying with a transparent plastic, in particular by flooding with polyurethane.
  • the light decoupling structures can be introduced into the layer containing the metal according to a very favorable development of the method according to the invention in method step 2 by a printing method, in particular a screen printing method and/or in method step 4 by embossing.
  • the layer containing the metal is formed as a chrome foil.
  • a so-called chromium foil is typically a plastic foil which is applied with a metallic look, for example in that it is provided with chromium, silver or similar materials, in particular vaporized.
  • a foil with a metallic effect can be achieved with a relatively small proportion of metal, so that the foil is permeable to light at least in one direction and, in particular, reflects the light in the other direction.
  • the corresponding layer can also be designed in such a way that it is also largely transparent to radar radiation, so that, for example, corresponding radar sensors, such as those used for the environment sensors of a vehicle, can be placed behind the illuminated component without damaging it affect their functionality.
  • the colored layer is formed as an opaque colored layer.
  • an opaque colored layer is not permeable to light, so that in the case of illumination with the light-emitting diodes used, the light is coupled out only in the area of the light decoupling structures and shines through the layer containing the metal, while the neighboring areas covered with the colored layer are are opaque to light.
  • the illuminated component is preferably used in the area of the exterior paneling of a vehicle, it can be provided that the colored layer is the same color as the paint finish of the vehicle or in a color that matches the design, for example a contrasting color.
  • the vehicle according to the invention now includes a component manufactured according to the method. Further advantageous configurations of the illuminated component according to the invention also result from the exemplary embodiment, which is described in more detail below with reference to the figure.
  • FIG. 1 shows a basic front view of a possible illuminated component in a schematic representation
  • Fig. 2 is a sectional view through part of this illuminated component.
  • an illuminated component provided with 1 in its entirety can be seen, which can be used, for example, in the area of the outer paneling of a vehicle.
  • This can be, for example, the section in the front of the vehicle known as the radiator grille in conventional vehicles with internal combustion engines, which, for example in electrically powered vehicles, can no longer be in the form of an air-permeable grille, but in the form of a closed component.
  • the component 1 itself is partially designed in the color of the car and has some sections labeled 3 shown here in the form of four rectangles and a circle, which are not designed in the color of the car, but which on the one hand appear in a metallic color when the backlighting is switched off, for example in chrome look.
  • a chrome foil 5 is provided as a metal-containing layer as a central component. This is provided on its side facing the visible side 6 shown at the top in FIG. When this colored layer 2 is partially applied to the chrome foil 5, in the representation of Figure 1 with 3 designated sections left blank. As can be seen in the illustration in FIG. 2, these later form a three-dimensional structure in the direction of the visible side 6 or, in principle, also in the opposite direction to the visible side 6 .
  • the composite produced in this first process step from the chrome foil 5 and the colored layer 2, which has been partially applied to this chrome foil 5, is still flat. It is then provided with electronic components, which are at least partially printed on. Purely by way of example, printed conductor tracks 7 can be seen in FIG. 2, in the area of which two light-emitting diodes 8 are then attached. Light decoupling structures 9 are also applied by printing in area 3, also on the side of chrome foil 5 facing away from visible side 6, so that they cannot be seen from visible side 6 in the non-illuminated state.
  • this combination of electronics 7, 8, chrome foil 5 and colored layer 2 with the light decoupling structures 9 applied in the corresponding sections 3 is subjected to a deep-drawing process or thermal forming in order to produce the three-dimensional configuration already visible in FIG. This creates two facets within the section 3, which can be seen from the visible side 6.
  • the base layer 10 shown in FIG. The base layer 10 is designed as a transparent or translucent thermoplastic. This can be back-injected in particular behind the printed conductor tracks 7, the LEDs 8 and the light decoupling structures 9 in the area of the three-dimensionally shaped areas 3.
  • the structure is then sealed with the cover layer 4 already mentioned, which can also be designed as a transparent thermoplastic or in particular as a cast-on layer made of polyurethane.
  • the component is therefore sprayed over with this cover layer 4, for example, or preferably flooded, so that the layer thickness of the cover layer 4 is greater than the three-dimensional shape of the sections 3.
  • This creates a smooth surface on the visible side 6, under which the three-dimensional shape of the sections 3, ie the facet structure here, can be seen accordingly, but does not protrude beyond the surface of the visible side 6.
  • the structure now has the visual appearance of the combination of the chrome of the chrome foil 5 in sections 3 and the vehicle color in the colored layer 2 applied thereto.
  • the illuminated one is backlit Component 2 by the transparent or translucent base layer 10 is illuminated.
  • the colored layer 2 is ideally impermeable to light, so that light is radiated in the direction of the visible side 6 only in the area of the sections 3, supported or enabled by the light decoupling structures 9.
  • the light-emitting diodes 8 can be implemented and controlled in any way, so that in particular different colors, changing colors or the like are conceivable, as well as flashing, regulation of the light intensity, for example depending on the ambient brightness, swelling up and down the light intensities or the like.
  • the entire component 1 is to be constructed in an extremely compact manner transverse to the stacking direction of the individual layers and can thus be easily integrated into any existing design and, unlike previous constructions with complex and correspondingly thicker lighting technology, can also be easily and efficiently installed in existing designs without here having to constructively adapt the proportions and available installation space.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Marketing (AREA)
  • Accounting & Taxation (AREA)
  • Business, Economics & Management (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)

Abstract

L'invention concerne un dispositif lumineux (1) pour véhicule comportant une structure multicouche ayant des composants électroniques intégrés (7, 8) ayant une surface externe sur le côté visible (6), l'une des couches (5) comprenant un métal, et des diodes électroluminescentes (8) en tant que partie des composants électroniques (7, 8) étant disposées sur le côté de la couche (5) comprenant le métal qui est opposé au côté visible (6). L'invention est caractérisée en ce que la couche (5) comprenant le métal est recouverte d'une couche colorée (2) par sections sur la surface de ladite couche faisant face au côté visible (6), les sections (3) de la couche (5) comprenant le métal qui ne sont pas recouvertes par la couche colorée (2) ayant une forme tridimensionnelle, et la région de celles-ci comportant des structures de couplage de sortie de lumière (9) disposées sur le côté de la couche (5) comprenant le métal qui est opposé au côté visible (6).
EP22733014.9A 2021-07-13 2022-06-08 Procédé de fabrication de dispositif lumineux pour véhicule Pending EP4371103A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021003615.8A DE102021003615B4 (de) 2021-07-13 2021-07-13 Verfahren zum Herstellen eines beleuchteten Bauteils für ein Fahrzeug
PCT/EP2022/065533 WO2023285034A1 (fr) 2021-07-13 2022-06-08 Procédé de fabrication de dispositif lumineux pour véhicule

Publications (1)

Publication Number Publication Date
EP4371103A1 true EP4371103A1 (fr) 2024-05-22

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Application Number Title Priority Date Filing Date
EP22733014.9A Pending EP4371103A1 (fr) 2021-07-13 2022-06-08 Procédé de fabrication de dispositif lumineux pour véhicule

Country Status (7)

Country Link
US (1) US20240321149A1 (fr)
EP (1) EP4371103A1 (fr)
JP (1) JP7675921B2 (fr)
KR (1) KR20240015108A (fr)
CN (1) CN117561561A (fr)
DE (1) DE102021003615B4 (fr)
WO (1) WO2023285034A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023000084A1 (de) 2023-01-12 2023-11-16 Mercedes-Benz Group AG Abschnittsweises hinterleuchtetes Bauteil
DE102023000246B3 (de) 2023-01-27 2024-01-18 Mercedes-Benz Group AG Kraftfahrzeug mit einem Karosserieteil und einer Lichtquelle
DE102023000269A1 (de) 2023-01-30 2024-08-01 Mercedes-Benz Group AG Beleuchtbarer Dekormehrschichtverbund, Anbauteil für ein Fahrzeug sowie Fahrzeug
EP4660013A1 (fr) * 2024-06-04 2025-12-10 WEIDPLAS GmbH Composant pouvant être rétro-éclairé
DE102024002731B3 (de) 2024-08-22 2026-01-29 Mercedes-Benz Group AG Abdeckelement für ein Kraftfahrzeug

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010100099A (ja) * 2008-10-21 2010-05-06 Tsuda Industries Co Ltd 象徴構造体
JP6578182B2 (ja) * 2015-10-13 2019-09-18 サカエ理研工業株式会社 発光表示装置
DE102015015841B4 (de) 2015-12-05 2022-01-13 Daimler Ag Leuchtenanordnung mit Heckleuchten und beleuchteter Zierleiste
US10408391B2 (en) 2016-11-30 2019-09-10 Tactotek Oy Illuminated structure and related method of manufacture
US10485094B1 (en) 2018-08-27 2019-11-19 Tactotek Oy Multilayer structure with embedded sensing functionalities and related method of manufacture
US11148585B2 (en) 2019-02-15 2021-10-19 Lacks Enterprises, Inc. Decorative component for a vehicle with light emitting finish
ES2827326B2 (es) * 2019-11-20 2023-03-07 Aludec S A Procedimiento de fabricación de una pieza de automóvil
DE102020005896A1 (de) 2020-09-28 2020-11-12 Daimler Ag Verfahren zur Herstellung eines flächigen Verkleidungselementes für ein Fahrzeug

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JP2024529295A (ja) 2024-08-06
DE102021003615B4 (de) 2024-10-17
JP7675921B2 (ja) 2025-05-13
WO2023285034A1 (fr) 2023-01-19
DE102021003615A1 (de) 2023-01-19
KR20240015108A (ko) 2024-02-02
US20240321149A1 (en) 2024-09-26
CN117561561A (zh) 2024-02-13

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