EP2375136A1 - Lampe de véhicule automobile - Google Patents

Lampe de véhicule automobile Download PDF

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Publication number
EP2375136A1
EP2375136A1 EP10159521A EP10159521A EP2375136A1 EP 2375136 A1 EP2375136 A1 EP 2375136A1 EP 10159521 A EP10159521 A EP 10159521A EP 10159521 A EP10159521 A EP 10159521A EP 2375136 A1 EP2375136 A1 EP 2375136A1
Authority
EP
European Patent Office
Prior art keywords
motor vehicle
lens
light
lamp
vehicle light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10159521A
Other languages
German (de)
English (en)
Inventor
Bernd Waldmann
Frank Gutjahr
Frank Barthel
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.)
Odelo GmbH
Original Assignee
Odelo GmbH
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 Odelo GmbH filed Critical Odelo GmbH
Priority to EP10159521A priority Critical patent/EP2375136A1/fr
Publication of EP2375136A1 publication Critical patent/EP2375136A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • 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
    • 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
    • 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
    • F21S45/37—Ventilation or drainage of lighting devices specially adapted for signal lamps
    • 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
    • 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

Definitions

  • the invention relates to a motor vehicle lamp according to the preamble of claim 1.
  • a motor vehicle light fulfills one or more tasks or functions, such as, for example, a function illuminating the roadway as a headlight, or a signaling function as signal light, such as for indicating the direction of travel or indicating a braking activity, or ensuring visibility the vehicle during the day and / or night, such as in a design as a daytime running light.
  • a function illuminating the roadway as a headlight or a signaling function as signal light, such as for indicating the direction of travel or indicating a braking activity, or ensuring visibility the vehicle during the day and / or night, such as in a design as a daytime running light.
  • motor vehicle lights are on the vehicle's bow, on the vehicle flanks and / or on the side mirrors and rear lights arranged flashing lights, for example, ambient lighting, marker lights, brake lights, fog lamps, reversing lights, and typically high set third brake lights, so-called Central, High-Mounted Braking lights, daytime running lights, headlamps and fog lights used as turning or cornering lights, as well as combinations thereof.
  • flashing lights for example, ambient lighting, marker lights, brake lights, fog lamps, reversing lights, and typically high set third brake lights, so-called Central, High-Mounted Braking lights, daytime running lights, headlamps and fog lights used as turning or cornering lights, as well as combinations thereof.
  • a motor vehicle luminaire essentially comprises a housing, a luminous means arranged therein, optionally a reflector arranged behind the luminous means in the housing and / or an optical element arranged in front of the luminous element, such as a lens, a trough concentrator, eg a parabolic trough (CPC; Parabolic Concentrator) or the like for shaping a defined emission characteristic, as well as a transparent cover protecting the illuminant and optionally the reflector or the optic element against the effects of weathering, in short also referred to as a lens.
  • the lens encloses together with the housing a lamp and possibly the reflector receiving the lamp interior.
  • an optical disc can be arranged between the illuminant and the lens, which can have a specific structure and / or masking, for example, in order to conceal the luminous means in the case of a clear lens effecting a depth effect for a viewer.
  • the housing or the interior of the lamp can be divided into several chambers, each with their own bulbs, possibly reflectors and / or optical discs, and optionally light discs, of which several chambers can be the same or each chamber a different one of the functions described above.
  • the interior of the luminaire can be completely closed to the environment.
  • the room can communicate with the environment via one or more ventilation openings or via a water-impermeable membrane.
  • a motor vehicle light is also referred to as a closed light.
  • the motor vehicle light can also be opened to the vehicle interior more or less large area.
  • Such a motor vehicle light is also referred to as an open lamp.
  • LED chip light-emitting diode chip
  • the LED chip can be encapsulated by a transparent at least in a radiation direction envelope.
  • the headlamp has a heat source and a conveyor that promotes air from the heat source along the lens.
  • the headlamp also has a heat sink with a condensate drain, which connects the interior of the headlight housing with the environment.
  • the heat sink has an inner surface with a view in the direction of the conveying direction of the air compared to the rest of the inner surface larger roughness in the initial area.
  • the disadvantage of this is the space required for conveying the air for the conveying device and for flow channels past the heat source to the lens and across the heat sink back to the conveyor.
  • a further disadvantage results from the use of movable parts for the conveying device, combined with vibrations and a concomitant danger of creeping deterioration of electrical and / or mechanical connections in the headlight.
  • EP 2 020 569 A2 is a motor vehicle headlight with light emitting diodes known as a light source.
  • the headlamp has a conveying device controlled by a sensor system.
  • the sensor system measures the relative humidity in the interior of the headlamp housing and switches on the conveyor if required. This then circulates the air trapped in the headlight housing. The circulation passes the air past one of the light-emitting diodes on the rear side of a light-emitting diode carrier arranged heat sinks. By means of the heat sinks emitted via the heat sinks, the air heats up, allowing it to absorb more moisture and preventing condensation or eliminating existing condensation.
  • the heat sinks arranged on the rear side of the light-emitting diode carrier act here as a heat source, whereas the light disk of the headlight forms the heat sink.
  • An intended as a heat sink, on the underside of the headlamp near the lens arranged and provided with an outlet opening insert can not fulfill its intended function in each operating condition, since during driving the motor vehicle, the lens due to flow has a higher Nusselt number than the underside not flown.
  • a further disadvantage is that for the circulation of air through the conveyor to the heat sinks in the headlight housing flow channels must be formed, which require a considerable amount of space, which is then no longer the actual lighting functions of the headlight available. Due to the very tight space, for example, LED daytime running lights and vehicle tail lights this solution can therefore not be used there.
  • a motor vehicle light with at least one light emitting diode as a light source known.
  • the light-emitting diode is electrically connected to a series resistor.
  • the series resistor is thermally coupled to a window or mirror surface of the motor vehicle.
  • the motor vehicle light may be provided in conjunction with an exterior rearview mirror where it simultaneously serves to heat the mirror surface.
  • the light-emitting diode may be housed in a separate chamber from the mirror surface and the heater formed by the resistor.
  • the heating element can also be operated independently of the motor vehicle light.
  • the disadvantage of this is that the luminosity of the motor vehicle light can be affected by condensation and condensation.
  • the invention has for its object to develop a motor vehicle light, which is compact, can be adapted to the smallest possible space and in which a condensation of the lens is effectively prevented.
  • a motor vehicle lamp is provided with a light housing closed by a light housing, in which in the lower region of the lamp interior, preferably in the region of the lower edge of the lens, preferably near or on the inside of the lens, for example at the lower edge, a heating device is arranged.
  • the heating device is preferably accommodated in the lower region of the motor vehicle light or of the lamp housing enclosed by the luminaire housing and the lens and is positioned as close as possible to the lens.
  • the heater can be arranged at the bottom of the inner edge of the lamp housing at the bottom of the lens.
  • the resulting advantages over the prior art include, inter alia, that this produces a tempered air circulation and / or a resulting by the operation of one or more functions air circulation is supported.
  • the tempered air circulation heats the lens.
  • the tempered air circulation prevents the colder air comes directly into contact with the lens, which on the one hand prevents condensation and on the other hand, an existing, for example, standstill of a motor vehicle, dew condensation can be reduced, for example, the cold air from the immediate vicinity of the Lens is displaced by heated air.
  • the motor vehicle light can be configured, for example, as a motor vehicle tail light or as a daytime running light.
  • the motor vehicle light may optionally or in combination comprise one or more light-emitting diodes or LED chips as the light source and / or have a condensate discharge, which connects the light interior of the motor vehicle light enclosed by the lens and the light housing with the environment and / or have a resistance heating as a heating device , Alternatively or additionally, it is conceivable that the motor vehicle light has one or more incandescent lamps and / or gas discharge lamps as lighting means.
  • the heater is preferably a resistance heater printed on a foil.
  • the film heater is a relatively inexpensive solution, especially compared to the Prior art proposals for using a conveyor to recirculate air inside the automotive lamp to prevent condensation. Due to the low film thickness, only the smallest space is required for the film heating.
  • half motor vehicle light 01 shown in a basic form consists essentially of one of a lamp housing 02 and a lens 03 enclosed lamp interior 04, in which a lamp 05 and a reflector 06 are arranged.
  • One or more light-emitting diodes 07 which each consist of a light-emitting diode chip (LED chip) 09 encapsulated by a casing 08 which is transparent at least in a radiation direction, can be provided as lighting means 05.
  • a plurality of LED chips may be encapsulated by a common enclosure, wherein the enclosure may also be formed as a light guide.
  • the reflector 06 is produced as a plastic injection-molded part, which is provided with a reflective coating at least on its surfaces facing the illuminant 05. Openings 10 in the rear area of the reflector 06 and the luminaire housing 02 serve to make electrical contact with the electrical connections 11 of the luminous means 05.
  • the luminaire housing 02 can be equipped with a condensate discharge 12, which connects the luminaire interior 04 with the environment 18.
  • the condensate discharge 12 is embodied, for example, as an opening 13 arranged in the lower part of the luminaire housing 02.
  • the condensate discharge 12 may be provided at the lowest point of a depression 14 formed in the lower region of the luminaire housing 02.
  • condensate collecting at the lowest point of the luminaire housing 02 formed by the depression 14 can collect and flow out through the opening 13 of the condensate drain 12.
  • motor vehicle lights 01 is additionally provided in the lower part of the lamp interior 04 in a region near the lens 03 arranged heater 15.
  • the heater 15 may, as in the Fig. 2 and 3 represented at least in a subsequent to the lower edge of the lens 03 portion 16 of the lamp housing 02 may be arranged such that the heater 15 is disposed at least on the subsequent to the lamp housing 02 lower edge of the lens 03.
  • a distance can be provided between the lens 03 and the heater 16 arranged in the region 16 of the lamp housing 02 adjoining the lower edge of the lens 03, which, for example, can damage the heater 15 in the case of a cohesive connection of Luminaire housing 02 and lens 03 during a manufacturing process of the vehicle light 01 prevented.
  • the heater 15 may also be as in Fig. 4 shown on the inside 17 of the lens 03 may be arranged.
  • An arrangement of the heater in the lens 03 is conceivable.
  • a heating wire is inserted into the intended for the production of the lens 03 injection mold, before then provided for the production of the lens 03 starting material is introduced into the injection mold.
  • a subsequent introduction for example, a heating wire in the lens 03 after its completion is conceivable.
  • the heater 15 may be formed as a resistance heater. In principle, it is also conceivable for the heating device 15 to be designed as one or more infrared radiators arranged, for example, in the lower region 16 of the luminaire housing 02 lying close to the lens 03.
  • the heating device 15 is preferably a resistance heater printed on a film. Due to the low film thickness, only the smallest space is required for the film heating. After printing, the film can then be applied to the lens or the luminaire housing at a location provided for this purpose without any special requirements for a construction space. In particular, compared to the prior art proposals of using a conveyor to circulate air inside the motor vehicle light to prevent condensation, the film heater is an inexpensive solution.
  • lens 03 and / or light housing 02 with the resistance heating is conceivable.
  • a direct printing of lens 03 and / or light housing 02 with the resistance heating is conceivable.
  • the motor vehicle light 01 may be configured, for example, as a daytime running light or as a motor vehicle tail lamp.
  • the example in a subsequent to the lower edge of the lens 03 batch 16 of the lamp housing 02 and / or on the inside 17 of the lens 03 and / or in the lens 03 in the lower part of the lamp interior 04 in a region near the lens 03 arranged heater 15th creates a tempered air circulation, which heats the lens 03.
  • the tempered air circulation prevents the colder air comes directly into contact with the lens 03, which on the one hand prevents condensation and on the other hand, an already existing, resulting for example at standstill of a motor vehicle, condensation can be reduced.
  • the motor vehicle light 01 does not necessarily have to be equipped with a reflector 06.
  • the luminaire housing 02 it is conceivable, for example, for the luminaire housing 02 to be provided at least in part with a reflective coating on one or more of its inner surfaces facing the luminaire interior 04.
  • optics which are connected in front of the light-emitting diodes so that no reflector or other coated surface is necessary.
  • the heating device can be at least switchable as a series resistor for a lamp of the motor vehicle light.
  • the switching on and off of the heater can be done by sensors, for example, based on a temperature at a suitable location in the interior of the lamp.
  • a suitable location may be, for example, the area near the lens, in which a temperature sensor may be arranged.
  • a temperature sensor or other suitable sensor such as a moisture sensor, a sensor for detecting a fogging of the lens by a condensate, a sensor for detecting a contamination of the lens, which contamination eg following a completed cleaning the lens from the outside, for example, by a lighting or headlight cleaning system, still exists, or any combination of such sensors at any other, to make a statement about a condensation of the lens 03 suitable location in the interior of the lamp conceivable.
  • the invention is particularly industrially applicable in the field of production of motor vehicle lights.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP10159521A 2010-04-09 2010-04-09 Lampe de véhicule automobile Withdrawn EP2375136A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10159521A EP2375136A1 (fr) 2010-04-09 2010-04-09 Lampe de véhicule automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10159521A EP2375136A1 (fr) 2010-04-09 2010-04-09 Lampe de véhicule automobile

Publications (1)

Publication Number Publication Date
EP2375136A1 true EP2375136A1 (fr) 2011-10-12

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ID=42313879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10159521A Withdrawn EP2375136A1 (fr) 2010-04-09 2010-04-09 Lampe de véhicule automobile

Country Status (1)

Country Link
EP (1) EP2375136A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016030597A1 (fr) * 2014-08-26 2016-03-03 Peugeot Citroen Automobiles Sa Bloc optique de véhicule à masque à cellule photovoltaïque alimentant des moyens de chauffage de la glace
CN110150969A (zh) * 2019-06-11 2019-08-23 杭州老板电器股份有限公司 蒸汽烹饪器具用防冷凝灯罩及蒸汽烹饪器
WO2019174737A1 (fr) * 2018-03-15 2019-09-19 Melinz Martin Werner Dispositif d'émission de lumière
DE102019111546A1 (de) * 2019-05-03 2020-11-05 Irlbacher Blickpunkt Glas Gmbh Leuchte mit einer Beschichtung zur Enteisung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002211309A (ja) * 2001-01-18 2002-07-31 Neoex Lab Inc 車両のヘッドランプ
DE10346270A1 (de) * 2002-12-20 2004-07-08 Zizala Lichtsysteme Gmbh Fahrzeugscheinwerfer mit Heizung
WO2006105886A1 (fr) * 2005-04-06 2006-10-12 Bayer Materialscience Ag Phare
EP1718127A1 (fr) * 2005-04-28 2006-11-02 Illinois Tool Works Inc. Elément de chauffage pour phare de véhicule
DE102005060736A1 (de) * 2005-12-16 2007-07-05 Schefenacker Vision Systems Germany Gmbh Scheinwerfer mit Kondensatabscheider
DE102007004702A1 (de) * 2007-01-31 2008-08-07 Volkswagen Ag Fahrzeugleuchte mit einer Betauungsschutzeinrichtung
EP2020569A2 (fr) * 2007-08-01 2009-02-04 odelo GmbH Système de phare doté d'un dispositif de désembuage commandé et/ou réglé
US20100006554A1 (en) * 2008-07-14 2010-01-14 Ichikoh Industries. Ltd. Vehicle lighting device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002211309A (ja) * 2001-01-18 2002-07-31 Neoex Lab Inc 車両のヘッドランプ
DE10346270A1 (de) * 2002-12-20 2004-07-08 Zizala Lichtsysteme Gmbh Fahrzeugscheinwerfer mit Heizung
WO2006105886A1 (fr) * 2005-04-06 2006-10-12 Bayer Materialscience Ag Phare
EP1718127A1 (fr) * 2005-04-28 2006-11-02 Illinois Tool Works Inc. Elément de chauffage pour phare de véhicule
DE102005060736A1 (de) * 2005-12-16 2007-07-05 Schefenacker Vision Systems Germany Gmbh Scheinwerfer mit Kondensatabscheider
DE102007004702A1 (de) * 2007-01-31 2008-08-07 Volkswagen Ag Fahrzeugleuchte mit einer Betauungsschutzeinrichtung
EP2020569A2 (fr) * 2007-08-01 2009-02-04 odelo GmbH Système de phare doté d'un dispositif de désembuage commandé et/ou réglé
US20100006554A1 (en) * 2008-07-14 2010-01-14 Ichikoh Industries. Ltd. Vehicle lighting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DR. MÜLLER GMBH: "Elektro-Isolierstoff Mylar A FI 13010", 1 June 2011 (2011-06-01), INTERNET, pages 1 - 3, XP055011228 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016030597A1 (fr) * 2014-08-26 2016-03-03 Peugeot Citroen Automobiles Sa Bloc optique de véhicule à masque à cellule photovoltaïque alimentant des moyens de chauffage de la glace
FR3025282A1 (fr) * 2014-08-26 2016-03-04 Peugeot Citroen Automobiles Sa Bloc optique de vehicule a masque a cellule photovoltaique alimentant des moyens de chauffage de la glace
CN106662311A (zh) * 2014-08-26 2017-05-10 标致·雪铁龙汽车公司 具有带有为玻璃状件的加热部件供电的光电池的遮罩的车辆光学单元
WO2019174737A1 (fr) * 2018-03-15 2019-09-19 Melinz Martin Werner Dispositif d'émission de lumière
DE102019111546A1 (de) * 2019-05-03 2020-11-05 Irlbacher Blickpunkt Glas Gmbh Leuchte mit einer Beschichtung zur Enteisung
CN110150969A (zh) * 2019-06-11 2019-08-23 杭州老板电器股份有限公司 蒸汽烹饪器具用防冷凝灯罩及蒸汽烹饪器

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