EP3581848B1 - Kraftfahrzeugbeleuchtungsvorrichtung - Google Patents

Kraftfahrzeugbeleuchtungsvorrichtung Download PDF

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Publication number
EP3581848B1
EP3581848B1 EP18382421.8A EP18382421A EP3581848B1 EP 3581848 B1 EP3581848 B1 EP 3581848B1 EP 18382421 A EP18382421 A EP 18382421A EP 3581848 B1 EP3581848 B1 EP 3581848B1
Authority
EP
European Patent Office
Prior art keywords
lighting device
automotive lighting
opaque
outer glass
opaque element
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.)
Active
Application number
EP18382421.8A
Other languages
English (en)
French (fr)
Other versions
EP3581848A1 (de
Inventor
Ana-Maria OCHOA
Carlos Gomez
José-Manuel M. LOMAS
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 Iluminacion SA
Original Assignee
Valeo Iluminacion SA
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 Iluminacion SA filed Critical Valeo Iluminacion SA
Priority to EP18382421.8A priority Critical patent/EP3581848B1/de
Priority to CN201910495862.9A priority patent/CN110594697B/zh
Publication of EP3581848A1 publication Critical patent/EP3581848A1/de
Application granted granted Critical
Publication of EP3581848B1 publication Critical patent/EP3581848B1/de
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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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices
    • F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps
    • 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
    • F21S45/50—Waterproofing
    • 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
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes

Definitions

  • the present invention belongs to the field of lamps for automotive vehicles, and more specifically, to the design of headlamps to avoid fogging in the outer glass.
  • the permeable element is opaque enough to avoid light leakage, but offers an easier path for the dry flow to reach the glass and avoid misting. Hence, both problems are satisfactorily solved with a solution which is simple and inexpensive.
  • the permeable element comprises a valve
  • a valve is a suitable solution for a permeable material as defined in the present invention, since it allows water vapour to pass through but does not allow light to pass through.
  • the permeable element comprises a porous material.
  • a porous material is a suitable solution for a permeable material as defined in the present invention, since it allows water vapour to pass through but does not allow light to pass through.
  • the whole opaque element is made of a porous material.
  • these embodiments include a porous material that is able to resist loads.
  • the main part of the opaque element is made of a solid material and only the second portion is made of a porous material, in order to avoid loads on this second portion.
  • the first portion of the opaque element is made of plastic injection with a pore generation process. In other embodiments, the first portion of the opaque element is manufactured out of a sintering process
  • the porous material is one of PTFE, pumice stone or a textile material.
  • At least a portion of the opaque element is located less than 5cm from the outer glass.
  • the opaque element is a bezel. In other embodiments, the opaque element is a harness cover. These are common elements in a lighting device, and are close enough to the glass so that the porosity of the first portion has a positive impact in the path of the dry flow.
  • the lighting device further comprises a deflector arranged to direct an airflow from the ventilation element to the first portion of the opaque element.
  • This deflector makes still easier the path of the dry flow from the ventilation element comprised in the housing and the glass which is intended to be demisted.
  • the first portion has a hydrophobic or super-hydrophobic surface treatment.
  • the internal face of the outer glass has an anti-mist surface treatment.
  • This anti-mist treatment is also helpful to cooperate with the dry current in achieving the demisting of the glass surface.
  • the light source is a solid-state light source.
  • solid state refers to light emitted by solid-state electroluminescence, which uses semiconductors to convert electricity into light. Compared to incandescent lighting, solid state lighting creates visible light with reduced heat generation and less energy dissipation.
  • the typically small mass of a solid-state electronic lighting device provides for greater resistance to shock and vibration compared to brittle glass tubes/bulbs and long, thin filament wires. They also eliminate filament evaporation, potentially increasing the life span of the illumination device.
  • Some examples of these types of lighting comprise semiconductor light-emitting diodes (LEDs), organic light-emitting diodes (OLED), or polymer light-emitting diodes (PLED) as sources of illumination rather than electrical filaments, plasma or gas.
  • FIG. 1 shows a scheme of an automotive lighting device 101 according to the state of the art.
  • This lighting device comprises the following elements:
  • FIG. 1 shows an automotive lighting device 1 according to the invention.
  • This lighting device 1 comprises
  • the opaque element 6 is a bezel, which is located between 1cm and 5cm from the outer glass.
  • This bezel 6 comprises a first portion 7 which is made of a porous material.
  • the location of this first portion 7 is optimum to provide the dry current the fastest path 8 to reach the outer glass.
  • the path 8 of the lighting device of the invention is much more straightforward than the path 107 followed by the dry flow in the lighting devices of the state of the art.
  • the bezel 6 is made of a plastic injection material, where the first portion 7 is subject to a pore formation process.
  • the rest of the bezel keeps its original structure, so that it may resist loads, while the first portion is made porous to provide the advantageous feature to the lighting device.
  • the porous material has a hydrophobic surface treatment, to avoid humidity being stored in the pores.
  • Figure 3 shows an even more efficient lighting device 1 according to the invention.
  • This embodiment comprises all the elements of the embodiment shown in the preceding figure and also comprises a deflector 9 arranged to direct the dry flow from the ventilation element 4 to the first portion 7 of the opaque element 6.
  • This deflector is arranged in contact with a zone of the housing which is close to the ventilation element, and limits the path for the dry flow so that it reaches the first portion 7 sooner.
  • the first portion 7 of the opaque element 6 is smaller, since the deflector 9 directs the flow towards the particular first portion, and the rest of the bezel does not receive the dry flow.
  • the deflector 9 directs the flow towards the particular first portion, and the rest of the bezel does not receive the dry flow.
  • Figure 4 shows a lighting device 1 according to the invention installed in an automotive vehicle 100.
  • This automotive vehicle 100 will have their headlamps easily demisted without using particular and expensive active elements. There is no need to force any current, since the particularly advantageous structure of the lighting device 1 according to the invention is enough to cause demisting in a faster way than in the headlamps which are known in the state of the art.
  • the bezel 6 is usually seen, but the first portion is not seen in this figure. Since solid plastic materials are aesthetically preferred to porous materials, this feature turns out to be advantageous.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (14)

  1. Kraftfahrzeugbeleuchtungsvorrichtung (1), umfassend:
    eine Lichtquelle (2), die zum Emittieren von Licht vorgesehen ist;
    ein Gehäuse (3), das ein Lüftungselement (4) umfasst, welches zulässt, das Wasserdampf hindurch gelangen kann, während flüssiges Wasser am Eindringen in das Gehäuse gehindert wird;
    ein Außenglas (5), das zum Verschließen des Gehäuses (2) angeordnet ist;
    ein opakes Element (6) mit einem ersten Anteil (7), der sich zwischen dem Lüftungselement (4) und dem Außenglas (5) befindet,
    dadurch gekennzeichnet, dass der erste Anteil (7) ein permeables Element umfasst, welches zulässt, dass Wasserdampf hindurch gelangt, und welches nicht zulässt, dass Licht hindurch gelangt, und wobei der erste Anteil (7) so angeordnet ist, dass ein trockener Luftstrom von dem Lüftungselement (4) das Außenglas (8) erreicht.
  2. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach Anspruch 1, wobei das permeable Element ein Ventil umfasst.
  3. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei das permeable Element ein poröses Material umfasst.
  4. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach Anspruch 3, wobei das gesamte opake Element aus einem porösen Material gefertigt ist.
  5. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der Ansprüche 3 oder 4, wobei der erste Anteil des opaken Elements aus Kunststoffeinspritzung durch einen Porenerzeugungsprozess gefertigt ist.
  6. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der Ansprüche 3 bis 4, wobei der erste Anteil des opaken Elements durch einen Sinterprozess gefertigt wird.
  7. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der Ansprüche 3 bis 6, wobei das poröse Material eines von PTFE, Bimsstein oder einem Textilmaterial ist.
  8. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei mindestens ein Anteil des opaken Elements sich weniger als 5 cm von dem Außenglas entfernt befindet.
  9. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei das opake Element eine Lünette ist.
  10. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei das opake Element eine Kabelbaumabdeckung ist.
  11. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei die Beleuchtungsvorrichtung des Weiteren einen Deflektor umfasst, der angeordnet ist, um einen Luftstrom aus dem Lüftungselement zu dem ersten Anteil des opaken Elements zu lenken.
  12. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei der erste Anteil eine hydrophobe oder superhydrophobe Oberflächenbehandlung hat.
  13. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei die Innenseite des Außenglases eine Antibeschlagoberflächenbehandlung aufweist.
  14. Kraftfahrzeugbeleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei die Lichtquelle eine Festkörperlichtquelle ist.
EP18382421.8A 2018-06-13 2018-06-13 Kraftfahrzeugbeleuchtungsvorrichtung Active EP3581848B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18382421.8A EP3581848B1 (de) 2018-06-13 2018-06-13 Kraftfahrzeugbeleuchtungsvorrichtung
CN201910495862.9A CN110594697B (zh) 2018-06-13 2019-06-06 汽车照明装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18382421.8A EP3581848B1 (de) 2018-06-13 2018-06-13 Kraftfahrzeugbeleuchtungsvorrichtung

Publications (2)

Publication Number Publication Date
EP3581848A1 EP3581848A1 (de) 2019-12-18
EP3581848B1 true EP3581848B1 (de) 2022-05-11

Family

ID=62716022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18382421.8A Active EP3581848B1 (de) 2018-06-13 2018-06-13 Kraftfahrzeugbeleuchtungsvorrichtung

Country Status (2)

Country Link
EP (1) EP3581848B1 (de)
CN (1) CN110594697B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3139182A1 (fr) * 2022-08-30 2024-03-01 Psa Automobiles Sa Projecteur pour véhicule automobile à aération optimisée

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000260208A (ja) * 1999-03-10 2000-09-22 Koito Mfg Co Ltd 車両用前照灯
US7217314B2 (en) * 2005-01-10 2007-05-15 Gore Enterprise Holdings, Inc. Venting system for minimizing condensation in a lighting assembly
US8465186B2 (en) * 2009-03-13 2013-06-18 Gore Enterprise Holdings, Inc. Moisture resistant coatings for polymeric enclosures
DE102012108773A1 (de) * 2012-09-18 2014-03-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Anordnung für die Klimatisierung eines Scheinwerfers eines Kraftfahrzeugs sowie Scheinwerfer mit einer Textilanordnung für die Klimatisierung
DE102013200468B4 (de) * 2013-01-15 2015-05-13 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Kraftfahrzeuge
JP6803130B2 (ja) * 2014-11-19 2020-12-23 日東電工株式会社 ランプ
FR3041417B1 (fr) * 2015-09-18 2018-08-17 Psa Automobiles Sa. Projecteur de vehicule a systeme d’aeration
DE102016224099A1 (de) * 2016-12-05 2018-06-07 Volkswagen Aktiengesellschaft Beleuchtungsvorrichtung für ein Kraftfahrzeug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3139182A1 (fr) * 2022-08-30 2024-03-01 Psa Automobiles Sa Projecteur pour véhicule automobile à aération optimisée

Also Published As

Publication number Publication date
EP3581848A1 (de) 2019-12-18
CN110594697A (zh) 2019-12-20
CN110594697B (zh) 2023-03-21

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