EP2416065A1 - Lampe de véhicule automobile - Google Patents

Lampe de véhicule automobile Download PDF

Info

Publication number: EP2416065A1
Authority: EP; European Patent Office
Prior art keywords: motor vehicle; lamp; interior; light; desiccant
Prior art date: 2010-08-03
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.): Granted

Application number

EP10008087A

Other languages

German (de)

English (en)

Other versions

EP2416065B1 (fr

Inventor

Otto Müller

Heinz-Dieter Hofmann

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.)

2010-08-03

Filing date

2010-08-03

Publication date

2012-02-08

2010-08-03 Application filed by Odelo GmbH filed Critical Odelo GmbH

2010-08-03 Priority to SI201030112T priority Critical patent/SI2416065T1/sl

2010-08-03 Priority to EP10008087A priority patent/EP2416065B1/fr

2012-02-08 Publication of EP2416065A1 publication Critical patent/EP2416065A1/fr

2012-10-03 Application granted granted Critical

2012-10-03 Publication of EP2416065B1 publication Critical patent/EP2416065B1/fr

Status Active legal-status Critical Current

2030-08-03 Anticipated expiration legal-status Critical

Images

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
- F21S45/37—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
- F21S45/30—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 a function illuminating the road surface in the case of a design as a headlight, or a signaling function as a signal light, for example for indicating the direction of travel or displaying 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 the formation of a defined Abstrahi futurizing, as well as a light-emitting means and optionally the reflector or the optical element against weathering protective, briefly referred to as a lens transparent cover.
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.
LEDs are, for example, incandescent lamps, gas discharge lamps and increasingly singly or in groups arranged light emitting diodes used.
the latter consist of a light-emitting diode-semiconductor chip, short LED chip, as well as a molded for example by injection molding, the LED chip completely or partially enveloping primary optics.
automotive lights are known in which pure LED chips are used without molded primary optics. In the following, therefore, for the sake of simplicity, no distinction is made between light-emitting diode and LED chip, and instead the term LED is used uniformly for both embodiments, unless explicitly stated otherwise.
Outstanding properties of LEDs compared to other, conventional lamps are a much longer life and a much higher light output with the same power consumption.
particularly compact motor vehicle lights can be realized by using LEDs as light sources, which can be adapted to almost every imaginable installation situation.
condensation occurs especially in motor vehicle lights with LEDs as bulbs, as these favor lower heat generation in the interior of the lamp due to their higher light output compared to a conventional light source of the same power consumption.
condensation of the lens may occur.
light emitting diodes compared to conventional light sources no or virtually no heat radiation, which heat the lens and the condensation could counteract already functionally.
the motor vehicle light has an inlet valve, through which at a negative pressure in the lamp relative to the surrounding air enters the luminaire interior
the motor vehicle lamp has an exhaust valve, by means of which at an overpressure in the lamp relative to the ambient air can escape from the lamp interior.
the inlet valve is associated with a desiccant, which adsorbs moisture from the air flowing into the interior. The desiccant may deliver some of the moisture to the air escaping from the interior through the outlet valve.
Adsorption involves the accumulation of substances from gases or liquids on the surface of a solid, more generally at the interface between two phases, whereas upon absorption the substances penetrate into the interior of a solid or liquid.
a drying agent consisting of a mixture of a porous polymer with a drying agent.
the desiccant thus prepared may be used near a heat source or alternating heating.
the heat of the heat source or the alternate heating the drying agent of the drying agent mixed under the porous polymer can be regenerated.
a source of heat for example, an incandescent lamp or a Glohlampensockel a motor vehicle lamp come into question.
U1 is a motor vehicle lamp with a closed to the environment lamp interior known.
the interior of the luminaire is under negative pressure with respect to the environment and is filled with pre-dried air.
a drying agent which absorbs moisture until it saturates and then has to be replaced.
a motor vehicle lamp in which a heat source and a desiccant with a pore structure and high adsorptive capacity is arranged in Leuchteninrtenraum, and a conveying device which promotes air from the heat source to the lens along to the desiccant.
the invention has for its object to develop a motor vehicle lamp, in which a condensation of the lens is effectively prevented.
a motor vehicle lamp with a lamp housing enclosed by a light housing and this final light is a lamp interior intended.
a regenerative moisture trap is provided in the interior of the lamp.
the regenerative moisture trap is at least one drying agent which absorbs moisture and which can be regenerated and / or regenerated, arranged in the interior of the lamp.
the at least one desiccant reduces the absolute humidity in the interior of the lamp so that the relative humidity remains below the saturation vapor pressure.
the at least one desiccant is preferably deposited at at least one point in the interior of the lamp, at which heat is generated during operation of at least one light function of the motor vehicle light. The heat generated in the immediate vicinity of the desiccant is used to regenerate the desiccant.
the drying means arranged in the vicinity of a heat source is a comparatively inexpensive solution, in particular in comparison to the proposals known from the prior art of using a conveyor device or a heating or heat source specially provided for regeneration in order to circulate air in the interior of the lamp to prevent condensation.
the invention makes use of the waste heat generated during operation of at least one light function of the motor vehicle light of electrical and / or electronic components already arranged in the interior of the luminaire for regeneration of the desiccant. Due to the elimination of such additional facilities only a small space is required.
An advantage of the invention which goes beyond the aim of preventing dew formation arises from the fact that heat is chemically bound during the regeneration of the drying agent, which causes additional desired cooling at the components which heat up, and heat is absorbed again when moisture is absorbed which additionally prevents condensation.
a moisture-absorbing and regenerative re-releasing superabsorbent polymer comes into question, which keeps the relative humidity in the luminaire interior to a predetermined value by the structure of the polymer.
a certain amount of regenerable drying agent is deposited there.
the drying agent absorbs moisture from the air and thus reduces the absolute humidity, so that the relative humidity remains below the saturation vapor pressure.
the amount of drying agent is preferably such that moisture can be absorbed in several cooling phases. If the motor vehicle light is put into operation, the corresponding components heat up and regenerate the desiccant again. This process can be repeated as often as desired, or at least until the desiccant becomes inoperative.
different desiccants can be used at different locations in the interior of the lamp, where heat is generated during operation of the motor vehicle light, for example when at least one light function is switched on.
the selection of a desiccant deposited at such a location can be effected by the maximum temperature and / or heat that arises at the location during operation. If only little heat is generated, only a small amount of liquid can be released again in the regeneration phase, so that only a small amount of desiccant is possible, compared to a site with high heat generation. If only low temperature arises, then a drying agent is selected which, in the regeneration phase, releases moisture while supplying heat at a low temperature level.
a desiccant for example, there may be provided a superabsorbent polymer which is preferably made of polyacrylic acid which is partially neutralized.
the superabsorbent polymer is characterized in that it can absorb and store many times its own weight in liquid or moisture, the process being reversible.
the superabsorbent polymer preferably comprises crosslinked polymer particles in which sodium ions are bonded.
an osmotic pressure builds up on contact with water, which sucks the water into the polymer.
the water is taken up until the elastic restoring forces of the polymer network compensate for the osmotic forces.
the superabsorbent polymer can be introduced in the form of a fleece in the interior of the lamp.
the superabsorbent polymer can form, comprise or be covered by the nonwoven material.
the fleece material can be used very flexibly in small remaining installation spaces in the interior of the lamp.
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 can optionally or in combination comprise one or more LEDs as lighting means and / or have a condensate drainage, which connects the enclosed by the lens and the lamp housing lamp interior of the motor vehicle light with the environment.
the motor vehicle light has one or more incandescent lamps and / or gas discharge lamps as the lighting means.
An in Fig. 1 shown motor vehicle lamp 01 consists essentially of one of a lamp housing 02 and the lamp housing 02 Final light lens 05 enclosed lamp interior 06, in which a lamp 04 and a reflector 03 are housed.
the reflector 03 may have a plurality of reflector chambers provided for each illuminant 04.
Several individually or in groups arranged bulbs 04 can be arranged on a light source carrier 07.
the illuminant carrier 07 may additionally comprise the reflector 03 or the reflector 03 may be integrated in the illuminant carrier.
the illuminant carrier 07 may be integrated into the reflector 03.
the reflector 03 can be produced as a plastic injection-molded part, which is preferably provided with a reflective coating at least on its surfaces facing the illuminant 04.
light bulbs 04 come, for example, incandescent lamps, gas discharge lamps and individually or in groups arranged light-emitting diodes in question.
the latter consist of a light-emitting diode-semiconductor chip, short LED chip, as well as a molded for example by injection molding, the LED chip completely or partially enveloping primary optics.
one or more pure LED chips can be used without molded primary optics as the light source 04.
a plurality of LED chips may be completely or partially enclosed by a common primary optics, wherein the primary optics may also be designed as a light guide.
motor vehicle light 01 is a regenerative moisture trap 08 is provided in the lamp interior 06.
the regenerative moisture trap 08 includes at least one arranged in the lamp interior, moisture absorbing and regenerative red emitting desiccant, which is deposited at least one point in the lamp interior 06, at the operation of at least one light function of the motor vehicle light 01 heat. The heat generated in the immediate vicinity of the desiccant is used to regenerate the desiccant.
the at least one desiccant lowers the absolute humidity in the interior of the lamp, so that the relative humidity remains below the saturation vapor pressure.
the amount of drying agent is preferably such that moisture can be absorbed in several cooling phases.
different desiccants can be used at different locations in the interior of the lamp 06, at which during operation of the Motor vehicle light 01 is generated at least one light function switched on heat.
the at least one point in the lamp interior 06, on which at least one light function of the motor vehicle light 01 generates heat during operation, is located, for example, in the immediate vicinity of the luminous means 04.
the light source 04 electronic components can also be provided in the interior of the lamp 06, which regulate, for example, the energization of the light source 04.
An example of a regulation of the energization of an LED chip with or without primary optics is a regulation of the current and / or the voltage in terms of magnitude and / or a regulation of pulsed pulsed operation of the current and the voltage with a frequency which is perceptible to the human eye above , If the at least one light source 04 designed as at least one LED chip is pulsed with a frequency which is perceptible to the human eye above, then the regulation of the current supply can for example extend or shorten the currentless intervals between the successive pulses and / or to shorten or lengthen the pulses themselves.
the electronic components can be arranged on a lamp support 07 accommodated in the luminaire interior 06.
the illuminant carrier 07 may be a circuit board in the simplest case.
the at least one point in the lamp interior 06, on which at least one light function of the motor vehicle light 01 generates heat during operation, may alternatively or additionally be located in the immediate vicinity of the lamp carrier 07 or the electronic components arranged on the lamp carrier 07.
the motor vehicle light 01 is formed for example as a daytime running lamp.
the motor vehicle light 01 does not necessarily have to be equipped with one or more reflectors 03, for example a reflector 03 with a plurality of refiect chambers provided for each illuminant 04.
the luminaire housing 02 may be provided at least in part with a reflective coating on one or more of its inner surfaces facing the luminaire interior 06.
the provided with a reflective coating inner surfaces of the lamp housing 02 form Reflecting surfaces, which can completely or partially replace a reflector 03.
optics which are connected in front of the light source '04, so that no reflector 03 or any other coated surface is necessary.
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)
Non-Portable Lighting Devices Or Systems Thereof (AREA)
Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

EP10008087A 2010-08-03 2010-08-03 Lampe de véhicule automobile Active EP2416065B1 (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
SI201030112T SI2416065T1 (sl)	2010-08-03	2010-08-03	Svetilo motornega vozila
EP10008087A EP2416065B1 (fr)	2010-08-03	2010-08-03	Lampe de véhicule automobile

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP10008087A EP2416065B1 (fr)	2010-08-03	2010-08-03	Lampe de véhicule automobile

Publications (2)

Publication Number	Publication Date
EP2416065A1 true EP2416065A1 (fr)	2012-02-08
EP2416065B1 EP2416065B1 (fr)	2012-10-03

Family

ID=43259744

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP10008087A Active EP2416065B1 (fr)	2010-08-03	2010-08-03	Lampe de véhicule automobile

Country Status (2)

Country	Link
EP (1)	EP2416065B1 (fr)
SI (1)	SI2416065T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110056835A (zh) *	2018-01-19	2019-07-26	法雷奥照明湖北技术中心有限公司	灯具以及具有该灯具的机动车辆
CN113574318A (zh) *	2019-01-14	2021-10-29	玛斯柯有限公司	用于减少led照明灯具中的水分的装置、方法及系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3542457A1 (de)	1985-11-30	1987-06-04	Bosch Gmbh Robert	Scheinwerfer fuer fahrzeuge, insbesondere fuer kraftfahrzeuge
FR2701756A1 (fr)	1993-02-17	1994-08-26	Peugeot	Bloc optique ventilé notamment pour véhicule automobile.
WO1997027042A1 (fr)	1996-01-25	1997-07-31	W.L. Gore & Associates, Inc.	Combinaison d'un deshydratant et d'une source de chaleur
US20020183431A1 (en) *	2000-05-17	2002-12-05	Yohei Kawaguchi	Moisture absorbing formed article
DE202004015615U1 (de)	2003-10-10	2004-12-30	Zizala Lichtsysteme Gmbh	Geschlossener Fahrzeugscheinwerfer
US20050157514A1 (en) *	2003-12-19	2005-07-21	Dr. Ing. H.C.F. Porsche Ag	Light structure
DE102005019651A1 (de)	2005-04-26	2006-11-09	Schefenacker Vision Systems Germany Gmbh	Scheinwerfer mit Trocknungsmittel

2010
- 2010-08-03 EP EP10008087A patent/EP2416065B1/fr active Active
- 2010-08-03 SI SI201030112T patent/SI2416065T1/sl unknown

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3542457A1 (de)	1985-11-30	1987-06-04	Bosch Gmbh Robert	Scheinwerfer fuer fahrzeuge, insbesondere fuer kraftfahrzeuge
FR2701756A1 (fr)	1993-02-17	1994-08-26	Peugeot	Bloc optique ventilé notamment pour véhicule automobile.
WO1997027042A1 (fr)	1996-01-25	1997-07-31	W.L. Gore & Associates, Inc.	Combinaison d'un deshydratant et d'une source de chaleur
US20020183431A1 (en) *	2000-05-17	2002-12-05	Yohei Kawaguchi	Moisture absorbing formed article
DE202004015615U1 (de)	2003-10-10	2004-12-30	Zizala Lichtsysteme Gmbh	Geschlossener Fahrzeugscheinwerfer
US20050157514A1 (en) *	2003-12-19	2005-07-21	Dr. Ing. H.C.F. Porsche Ag	Light structure
DE102005019651A1 (de)	2005-04-26	2006-11-09	Schefenacker Vision Systems Germany Gmbh	Scheinwerfer mit Trocknungsmittel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110056835A (zh) *	2018-01-19	2019-07-26	法雷奥照明湖北技术中心有限公司	灯具以及具有该灯具的机动车辆
CN113574318A (zh) *	2019-01-14	2021-10-29	玛斯柯有限公司	用于减少led照明灯具中的水分的装置、方法及系统
CN113574318B (zh) *	2019-01-14	2024-04-16	玛斯柯有限公司	用于减少led照明灯具中的水分的装置、方法及系统

Also Published As

Publication number	Publication date
SI2416065T1 (sl)	2013-02-28
EP2416065B1 (fr)	2012-10-03

Publication	Publication Date	Title
DE102011084114B4 (de)	2014-11-06	Kraftfahrzeugscheinwerfer
DE3626726A1 (de)	1988-02-11	Scheinwerfer fuer fahrzeuge, insbesondere kraftfahrzeuge
DE102007021865A1 (de)	2008-11-13	Beleuchtungseinrichtung für ein Fahrzeug
DE10359748A1 (de)	2005-07-28	Lichttechnische Einrichtung
DE102010013559A1 (de)	2011-10-06	Beleuchtungsvorrichtung für Fahrzeuge
DE102005019651A1 (de)	2006-11-09	Scheinwerfer mit Trocknungsmittel
DE102013017141B4 (de)	2016-03-17	Röhrenförmige LED-Lampe mit innenliegender, zylindrischer Sammellinse
DE112013006307T5 (de)	2015-09-10	Entfeuchtungseinrichtung
EP2395282B1 (fr)	2013-11-27	Lampe de véhicule automobile
DE102012100455A1 (de)	2013-03-21	Vorrichtung zur Verhinderung der Taukondensation eines Scheinwerfers eines Fahrzeuges
DE102006006099A1 (de)	2007-08-16	Trocknungseinrichtung für lichttechnische oder elektronische Geräte
DE19733000B4 (de)	2005-03-03	Kraftfahrzeugscheinwerfer mit einem optischen Abstandssensor
EP2416065B1 (fr)	2012-10-03	Lampe de véhicule automobile
DE102015108804A1 (de)	2016-12-08	Fahrzeugkomponente
EP1447620A2 (fr)	2004-08-18	Dispositif d'éclairage avec matériau absorbant l'humidité
DE102007004702A1 (de)	2008-08-07	Fahrzeugleuchte mit einer Betauungsschutzeinrichtung
DE102007034583A1 (de)	2009-01-29	Leuchte für Fahrzeuge, insbesondere für Kraftfahrzeuge
DE102014009612A1 (de)	2014-11-27	Leuchte für ein Fahrzeug
DE102014102921A1 (de)	2015-09-10	Beleuchtungsvorrichtung für Fahrzeuge
WO2012016609A1 (fr)	2012-02-09	Luminaire
DE102007042624A1 (de)	2009-03-12	Leuchtenanordnung
EP3789661A1 (fr)	2021-03-10	Lampe d'un véhicule avec une lentille de recouvrement
DE10213042A1 (de)	2003-10-02	Fahrzeugleuchte
DE4220148A1 (de)	1993-12-23	Grablicht
DE102016005533A1 (de)	2016-12-01	Luftentfeuchtungseinrichtung für ein Fahrzeug

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