EP3339726B1 - Scheinwerferscheibe eines kraftfahrzeugs mit aufgeformten thermoplastischen elektroden - Google Patents
Scheinwerferscheibe eines kraftfahrzeugs mit aufgeformten thermoplastischen elektroden Download PDFInfo
- Publication number
- EP3339726B1 EP3339726B1 EP17205677.2A EP17205677A EP3339726B1 EP 3339726 B1 EP3339726 B1 EP 3339726B1 EP 17205677 A EP17205677 A EP 17205677A EP 3339726 B1 EP3339726 B1 EP 3339726B1
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- Prior art keywords
- electrodes
- outer lens
- electrically conductive
- electrode
- edges
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- 229920001169 thermoplastic Polymers 0.000 title description 2
- 239000004416 thermosoftening plastic Substances 0.000 title description 2
- 239000000463 material Substances 0.000 claims description 36
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- 229920000642 polymer Polymers 0.000 claims description 6
- 239000012815 thermoplastic material Substances 0.000 claims description 6
- 239000012780 transparent material Substances 0.000 claims description 6
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- 239000011231 conductive filler Substances 0.000 claims description 4
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical class [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 229910001887 tin oxide Inorganic materials 0.000 claims description 4
- 229910003437 indium oxide Inorganic materials 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000615 nonconductor Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 description 21
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 239000013078 crystal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
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- 239000004020 conductor Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
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- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000144 PEDOT:PSS Polymers 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
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- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
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- 238000005507 spraying Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004954 Polyphthalamide Substances 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 235000015243 ice cream Nutrition 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920006375 polyphtalamide Polymers 0.000 description 1
- 229960002796 polystyrene sulfonate Drugs 0.000 description 1
- 239000011970 polystyrene sulfonate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229940006186 sodium polystyrene sulfonate Drugs 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(ii) oxide Chemical class [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/90—Heating arrangements
-
- 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
- F21S41/28—Cover glass
-
- 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
- F21S45/60—Heating of lighting devices, e.g. for demisting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
Definitions
- the invention relates to the field of lighting and light signaling, in particular for motor vehicles. More specifically, the invention relates to the field of luminous devices, in particular for motor vehicles, comprising a housing and a glass for closing said housing.
- the published patent document JPH10109587A shows a vehicle lighting device comprising an electric de-icing resistor placed on the glass and connected to a metal terminal for connection to an electric power supply.
- the published patent document US 2014/0332518 A1 discloses a motor vehicle headlight glass, comprising on its inner face an electrically conductive coating intended to serve as electrical resistance for defrosting the glass.
- the coating forms one or more metal tracks deposited on the ice.
- Metal electrodes are arranged at two opposite ends of the zone of the metal tracks so as to allow a homogeneous distribution of the supply current for the defrosting to the different tracks.
- the electrodes are fixed and connected to the metal tracks by solder or by a conductive adhesive. Each of these electrodes is at a distance from the edges of the glass and is intended to be connected to an electrical power supply.
- this teaching does not specify how this connection is made.
- the published patent document DE 20 2012 005 908 U also discloses a headlight glass for a motor vehicle.
- the ice comprises, on its outer face this time, an electrically conductive coating in order to form an electrical resistance for defrosting said ice.
- the coating forms an apparently continuous layer comprising carbon nanotubes.
- a protective varnish is deposited on the electrically conductive coating in order to protect it.
- the electrical connection of the electrically conductive coating is not detailed in this teaching.
- this teaching is specifically limited to an electrically conductive coating placed on the outer face of the ice, with a view to defrosting it in winter.
- the published patent document US 2007/0181565 A1 discloses, similarly to the aforementioned documents, a headlamp glass for a motor vehicle, comprising an electrically conductive coating in order to form an electrical resistance for defrosting said glass.
- the coating includes a electrically conductive track forming zigzags.
- the tracks end in a connector arranged on the inner face of a return portion of the crystal.
- a plug can then be connected to the connector for the power supply of the defrost resistor.
- This teaching is interesting in that it provides the necessary measures for the electrical connection of the de-icing resistor. These measurements are however limited to an electrical resistance in the form of a track forming zigzags and ending in two terminations to be supplied. These tracks are usually visible.
- the connector requires the presence of a glass return portion and the connection is necessarily made inside the box.
- the object of the invention is to propose a solution overcoming at least one drawback of the state of the art, more particularly of the aforementioned state of the art. More precisely still, the invention aims to propose a solution for defrosting a glass of a luminous device which is effective, economical and practical.
- the subject of the invention is in particular a lens for a luminous device, in particular for a motor vehicle, comprising: a main portion made of transparent plastic material; at least two upper, lower and/or lateral edges, called fastening edges, intended to cooperate with the edges of a casing of the light device; an electrically conductive coating forming an electrical defrost resistor; at least two electrodes electrically connected to the conductive coating; remarkable in that the electrodes are made of electrically conductive thermoplastic material and located on said fixing edges.
- the edges including the electrodes are top and bottom edges and/or side edges.
- the electrodes can ensure the contact of the ice with the case.
- the electrodes are overmoulded by the transparent plastic material.
- each of the electrodes comprises a connector intended to ensure an electrical supply.
- each of the connectors comprises at least one electrical pin projecting from the electrode comprising said connector, and a device for engagement with a plug, said device being made of electrically insulating material and said pin(s) being overmolded by the material of the electrode so as to be electrically connected with said electrode.
- the electrical pin(s) advantageously extend into the material of the electrodes.
- each of the engagement devices comprises a ring surrounding the corresponding pin or pins, said ring comprising means of mechanical engagement with the plug.
- the material of the electrodes comprises a polymer matrix of the thermoplastic resin type, preferably polycarbonate, and an electrically conductive filler material, preferably of the fiber, resin and/or particle type.
- thermoplastic resin is chosen from the group comprising: polycarbonate, polyamide, polyethylene, polyethylene terephthalate, polybutylene terephthalate, polyphthalamide, poly(acrylic acid).
- the fillers are chosen from the group comprising: nanoparticles, zinc sulphide, carbon-based particles, copper and copper alloy (brass)
- each of the engagement devices is molded onto the corresponding electrode.
- the material of the electrodes has a surface resistivity less than or equal to 10 4 ⁇ /cm 2 .
- the electrically conductive coating covers the electrodes, preferably on an inner face of said crystal.
- the covering extends over more than 80% of the length of the electrode.
- the electrically conductive coating is a varnish comprising metal oxides, preferably transparent metal oxides, with a transmission coefficient of at least 90% in the wavelengths of the visible range, conductors which are composed of the following oxides, taken alone or in combination among: zinc oxide doped with aluminum AZO; indium tin oxide ITO; zirconium oxide ZrO2; tantalum oxide Ta2O5; tin oxide doped with antimony ATO. indium and tin oxides.
- the electrically conductive coating is based on electrically conductive organic material, in particular polyphenylene sulphide or Pedot:PSS. It is recalled that Pedot:Pss is a mixture of two polymers which are poly(3,4-ethylenedioxythiophene) (PEDOT); and sodium polystyrene sulfonate (PSS).
- the electrically conductive coating forms a continuous film covering at least 30% of the surface of the main portion of the glass.
- each of the electrodes extends over at least 25% of the length of the edge comprising it.
- each of the electrodes extends over the thickness of the transparent plastic material adjacent to said electrode.
- each of the electrodes has a profile with a projection in contact, by cohesion, with the transparent material.
- the invention also relates to a luminous device, in particular for a motor vehicle, comprising: a casing forming an open cavity; a glass fixed to the case and closing the cavity; at least one light module in the cavity; remarkable in that the ice is in accordance with the invention.
- the device is advantageously a projector.
- the invention also relates to a process for producing a glass of a luminous device, in particular of a motor vehicle, noteworthy in that the glass is according to the invention and by the following steps: (a) injection of the transparent plastic material into a mold; (b) injection of the electrically conductive thermoplastic material into the mold in order to produce the electrodes (10).
- step (b) is carried out while the transparent plastic material is solidified.
- the two injection steps are reversed.
- the measures of the invention are advantageous in that they make it possible to carry out in an efficient and economical manner the electric power supply of the ice defrosting function of a lighting device.
- the fact of placing the electrodes at the fixing edges has a first advantage of arranging them in areas not visible from the outside.
- the electrodes are located in the opaque zone.
- This also has a second advantage of being able to make an electrical connection to the outside of the device.
- the connectors and connection plugs can then be arranged outside the area visible from the outside.
- the fact of making the electrodes of thermoplastic material makes it possible to make them by injection during the injection of the transparent material. The cost of producing ice can then be reduced.
- FIG. 1 illustrates an embodiment of a light device according to the invention.
- FIG. 1 is a vertical longitudinal sectional view when the device is in the normal mounting position on a vehicle.
- picture 2 is a view along section II-II.
- the light device 2 comprises a housing 4 forming a cavity 4 1 with an open one, said opening being covered by the glass 6.
- the housing 4 is advantageously made of plastic material. It may consist of several elements fixed to each other.
- the ice is transparent and advantageously made of plastic material such as in particular polycarbonate (PC).
- the crystal 6 comprises a main portion 6 1 intended to be traversed by the light rays of one or more light modules arranged in the cavity of the housing 4. It also comprises upper and lower edges 6 2 intended to cooperate with corresponding edges 4 2 of box 4.
- the main portion 6 1 of the window 6 advantageously comprises, on its inner face, an electrically conductive coating 8, capable of forming an electrical resistance for defrosting and/or demisting the window 6.
- This coating is advantageously a continuous coating in the form of a varnish comprising an electrically conductive filler material, such as for example indium-tin oxides.
- Indium-tin oxide or indium oxide doped with tin or ITO for the English name "Indium tin oxide”
- Indium-tin oxide is a mixture of indium(III) oxide (In 2 O 3 ) and tin (IV) oxide (SnO 2 ), in the typical mass proportion of 90% of the first and 10% of the second. This compound is colorless and transparent in thin layers.
- the main characteristic of indium tin oxide is its combination of electrical conductivity and optical transparency.
- Other conductive filler materials can be considered.
- the varnish advantageously comprises a transparent polymer matrix based on acrylic; or polyester-based; or based on polymers such as polycarbonate.
- the electrically conductive coating has a thermal conductivity greater than 10 Wm -1 .K -1 .
- Thermal conductivity is the energy quantity of heat transferred per unit area and time under a temperature gradient of 1 kelvin per meter.
- It can be deposited with a thickness of between 1 and 5 ⁇ m, preferably between 2 and 3 ⁇ m.
- the glass 6 comprises upper and lower edges 6 2 cooperating with corresponding edges 4 2 of the housing 4. These edges, upper and lower, 6 2 comprise electrodes 10 embedded in the plastic material forming the glass 6. It can also be observed that the electrically conductive coating 8 extends vertically until it covers the electrodes 10. The latter are in fact positioned at the level of the edges 6 2 so as to present their internal faces freely, the latter then being able to be in contact directly with the electrically conductive coating 8.
- the electrodes are made of electrically conductive thermoplastic material.
- This material may comprise a thermoplastic matrix, such as in particular polycarbonate (PC) or high-density polyethylene (PE-HD), and a filler material providing electrical conduction, such as in particular carbon black.
- the filler material can also be a resin or fibers.
- Their surface resistivity can be between 10 1 and 10 4 ⁇ /cm 2 .
- ESD C 1002 from the company RTP ® .
- This material includes a poly butylene terephthalate (PBT) base and glass fibers. It has a surface resistivity of less than 10 6 ⁇ /cm 2 .
- PRE-ELEC ® PE 1202 from the company PREMIX ® .
- the electrode 10 has a section with a profile with a projection on which the transparent plastic material is overmoulded.
- a connector 12+14 is arranged on electrode 10. It comprises one or more electric pins 12 protruding from electrode 10 and electrically connected with said electrode 10. It also comprises a device 14 for engagement with a plug (not shown).
- the latter can be formed by an annular wall made of insulating material and molded over the electrode 10. The annular wall surrounds the pins 12. Means of mechanical engagement can be provided on the annular wall, in order to ensure a retention of plug (not shown).
- the connector is arranged on its internal face unlike that of the lower edge which is on the external face of the electrode.
- the connector can be disposed, as desired, on the internal face or on the external face of the electrode.
- FIG. 2 is a view according to section II-II of the figure 1 , that is to say a rear view of the glass 6.
- the electrodes 10 are arranged on the upper and lower edges 6 2 , so as to generate a current in an essentially vertical direction along the conductive coating 8. It is however understood that the electrodes 10 can, in an alternative or complementary manner, be arranged on the side edges 6 3 . In this case, the current flowing through the conductive coating 10 will be oriented essentially horizontally. Still alternatively, it is conceivable to provide an electrode on an upper or lower edge 6 2 and another electrode on a side edge 6 3 , the current then being essentially oblique. In other words, different configurations of the electrodes are possible on the edges 6 2 and 6 3 , provided that they allow a current to flow along the conductive coating 8.
- the realization of the ice which has just been described can be operated as follows.
- the electrically conductive material is first injected into the zone or zones corresponding to the electrodes.
- the mold is then configured to be able to inject material into the remaining area corresponding to the rest of the ice cream.
- the transparent material is then injected into the mould, thus covering and overmolding the electrodes.
- the transparent material is injected first and then the electrodes are injected when they are in an opaque tinted polymer.
- the second injection is carried out while the material of the first injection is solidified in order to ensure optimum cohesion between the two materials.
- the injection may include an additional step of injecting the engagement device with a plug of the connector.
- This device is advantageously made of an electrically insulating material, that is to say different from that of the electrodes.
- This additional injection step can then take place after the injection of the electrically conductive material. It can be done before, during or after the injection of the transparent material.
- the electrically conductive coating is then applied outside the mould, in particular by spraying or spraying.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Resistance Heating (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Claims (13)
- Scheibe (6) einer Beleuchtungseinrichtung (2), insbesondere für ein Kraftfahrzeug, umfassend:- einen Hauptabschnitt (61) aus transparentem Kunststoff;- mindestens zwei obere, untere und/oder seitliche Ränder (62, 63), Befestigungsränder genannt, die dazu bestimmt sind, mit den Rändern eines Gehäuses (4) der Beleuchtungseinrichtung (2) zusammenzuwirken;- einen elektrisch leitfähigen Überzug (8), der einen elektrischen Widerstand zum Enteisen bildet;- mindestens zwei Elektroden (10), die elektrisch mit dem leitfähigen Überzug (8) verbunden sind;dadurch gekennzeichnet, dass
die Elektroden (10) aus einem elektrisch leitfähigen Thermoplast sind und an den Befestigungsrändern (62) gelegen sind, jede der Elektroden (10) einen Steckverbinder (12, 14) umfasst, der dazu bestimmt ist, eine elektrische Versorgung zu gewährleisten, und jeder der Steckverbinder mindestens einen elektrischen Kontaktstift (12) umfasst, der aus der den Steckverbinder umfassenden Elektrode (10) herausragt, und eine Eingriffseinrichtung (14) mit einem Stecker, wobei die Einrichtung (14) aus elektrisch isolierendem Material ist und der oder die Kontaktstifte (12) durch das Material der Elektrode so aufgeformt sind, dass sie mit der Elektrode (10) elektrisch verbunden sind. - Scheibe (6) nach Anspruch 1, dadurch gekennzeichnet, dass die Elektroden (10) durch den transparenten Kunststoff aufgeformt sind.
- Scheibe (6) nach Anspruch oder 1 oder 2, dadurch gekennzeichnet, dass jede der Eingriffsvorrichtungen (14) einen Ring umfasst, der den oder die entsprechenden Kontaktstifte (12) umgibt, wobei der Ring Mittel zum mechanischen Eingriff mit dem Stecker umfasst.
- Scheibe (6) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Material der Elektroden (10) eine Polymermatrix, bevorzugt Polycarbonat, und ein elektrisch leitfähiges Füllmaterial, bevorzugt vom Faser-, Harz- und/oder Partikeltyp, umfasst.
- Scheibe (6) nach einem der Ansprüche 1 und 3 und nach Anspruch 4, dadurch gekennzeichnet, dass jede der Eingriffseinrichtungen (14) auf die entsprechende Elektrode (10) aufgeformt ist.
- Scheibe (6) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Material der Elektroden (10) einen spezifischen Oberflächenwiderstand kleiner oder gleich 104 Q/cm2 aufweist.
- Scheibe (6) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der elektrisch leitfähige Überzug (8) die Elektroden (10) bedeckt, bevorzugt auf einer Innenseite der Scheibe.
- Scheibe (6) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der elektrisch leitfähige Überzug (8) ein Lack ist, der Metalloxide umfasst, bevorzugt Indium- und Zinnoxide.
- Scheibe (6) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sich jede der Elektroden (10) über mindestens 50 % der Länge eines der Ränder (62) erstreckt.
- Scheibe (6) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sich jede der Elektroden (10) über die Dicke des an die Elektrode angrenzenden transparenten Kunststoffs erstreckt.
- Beleuchtungseinrichtung (2), insbesondere für ein Kraftfahrzeug, umfassend:- ein Gehäuse (4), das eine offene Kavität bildet;- eine Scheibe (6), die an dem Gehäuse befestigt ist und die Kavität verschließt;- mindestens ein Leuchtmodul in der Kavität;dadurch gekennzeichnet, dass die Scheibe (6) einem der Ansprüche 1 bis 10 entspricht.
- Verfahren zur Ausführung einer Scheibe (6) für eine Beleuchtungseinrichtung (2), insbesondere für ein Kraftfahrzeug, dadurch gekennzeichnet, dass die Scheibe (6) gemäß einem der Ansprüche 1 bis 10 ist, und durch die folgenden Schritte:(a) Spritzen des transparenten Kunststoffs in eine Form;(b) Spritzen des elektrisch leitfähigen Thermoplasts in die Form, um Elektroden (10) auszuführen.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass der Schritt (b) ausgeführt wird, wenn das transparente Material verfestigt ist.
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FR1662840A FR3060711A1 (fr) | 2016-12-20 | 2016-12-20 | Glace de projecteur automobile avec electrodes thermoplastiques surmoulees |
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EP3339726A1 EP3339726A1 (de) | 2018-06-27 |
EP3339726B1 true EP3339726B1 (de) | 2023-03-08 |
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FR (1) | FR3060711A1 (de) |
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CN109323213A (zh) * | 2018-11-07 | 2019-02-12 | 华域视觉科技(上海)有限公司 | 防起雾车灯配光镜 |
US11236884B2 (en) | 2019-09-05 | 2022-02-01 | Aptiv Limited Technologies | Vehicle lighting assembly with lens heating device and receptacle connector assembly for same |
DE102020121024A1 (de) * | 2020-08-10 | 2022-02-10 | Marelli Automotive Lighting Reutlingen (Germany) GmbH | Kraftfahrzeugbeleuchtungseinrichtung mit beheizbarer Abdeckscheibe |
FR3119010B1 (fr) * | 2021-01-20 | 2023-03-17 | Psa Automobiles Sa | Bloc optique à glace définie par bi-injection contrôlée, pour un véhicule |
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DE4333655C2 (de) * | 1993-10-02 | 2002-11-14 | Bayerische Motoren Werke Ag | Heizvorrichtung für Abdeckscheiben von Kraftfahrzeug-Scheinwerfern |
JPH0899610A (ja) * | 1994-09-30 | 1996-04-16 | Tsutsunaka Plast Ind Co Ltd | 防曇性能を有する合成樹脂製窓材およびその製造方法 |
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EP3339726A1 (de) | 2018-06-27 |
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