EP2092551A2 - Dispositif d'obscurcissement - Google Patents

Dispositif d'obscurcissement

Info

Publication number
EP2092551A2
EP2092551A2 EP07848078A EP07848078A EP2092551A2 EP 2092551 A2 EP2092551 A2 EP 2092551A2 EP 07848078 A EP07848078 A EP 07848078A EP 07848078 A EP07848078 A EP 07848078A EP 2092551 A2 EP2092551 A2 EP 2092551A2
Authority
EP
European Patent Office
Prior art keywords
reflector
shading device
shading
sector
aperture
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Withdrawn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
EP07848078A
Other languages
German (de)
English (en)
Inventor
Sascha Zelt
Frank Auer
Christian Seichter
Gerhard Behr
Klaus Wittmann
Peter Helbig
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.)
Osram GmbH
Original Assignee
Osram 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 Osram GmbH filed Critical Osram GmbH
Publication of EP2092551A2 publication Critical patent/EP2092551A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • F21S41/164—Incandescent light sources, e.g. filament or halogen lamps having two or more filaments
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature

Definitions

  • the invention is based on a shading device for a headlight lamp.
  • Document DE 19624688A1 discloses a shading device for a motor vehicle headlamp with a dimming cap for one of the two helices of a two filament halogen incandescent lamp. Opposite to a welding lug facing the lamp dome on the dimming cap, a scraper nose is formed, which shadows the dipped beam filament and the high-beam filament against each other. About a desired configuration of the boundary of the trained on the inner surface of the reflector, shaded sector this document is not apparent.
  • Regulation ECE No. 37 provides information on the design of a H4 halogen incandescent lamp.
  • This halogen incandescent lamp has a sockelnahe filament and a sockelferne filament, which has a Abblendkappe.
  • the dimming cap serves to create the cut-off line for the dipped beam.
  • the diameter of the reflector aperture must be 38.2mm due to the socket design of the H4 halogen bulb.
  • the object of the present invention is to provide a shading device for a headlight lamp, by means of which an efficient use of the reflector surface by the luminous bodies of a halogen incandescent lamp is possible even with diameters of the reflector breakthrough below 38.2 mm.
  • a shading device for a headlamp which has a reflector and two luminous bodies.
  • the reflector has a diameter smaller than 38.2mm having reflector aperture.
  • the shading device is configured in such a manner that at least one boundary of the shadow-breakthrough sector shaded by the shading device on the reflector, which is between the reflector aperture and a circle around the reflector aperture of 38.2 mm in diameter, as viewed in FIG Reflector breakdown parallel plane lying on a straight line.
  • the shading device can make a shading with respect to one of the luminous bodies while shading Sector of the reflector for the radiation behavior of the second filament can be optimized. As a result, more useful light can be obtained from the second luminous body.
  • a boundary of the shaded sector which is located between the reflector aperture and the outer periphery of the reflector, lies on a straight line when viewed from a plane parallel to the reflector aperture.
  • both boundaries of the shaded sector lie on a straight line
  • the reflector for the unshaded luminaire can be optimized. It is further preferred that the straight line of the boundaries intersect the center of the reflector aperture, so that a symmetry of the design of the shaded sector is given and thus the illumination is optimally designed. It is further preferred that the straight line intersect the center of the reflector aperture. This results in a radial extent of the boundary of the shaded sector and thus manufacturing advantages for the shaded sector of the reflector with respect to the luminous body, which illuminates this shaded sector.
  • the shadowed sector lies in an angular range of substantially 120 ° -165 °.
  • the shading device has a Abschatternase, by whose edges the boundary for the shaded sector is formed. By a precise edge design can thus be implemented a precise course of the boundaries of the shaded sector.
  • a location within the reflector breakthrough is shadowed by the vertex edge of the Abschatternase. In this way, further stray light can be avoided in the base region of the headlight lamp.
  • the largest width of the shading device is in the range of about 5mm to about 12mm. This makes it possible to make an effective design of the headlamp with good luminous efficacy with a small size of the lamp vessel.
  • a shading device as described above with reflector and two luminous bodies arranged in the reflector interior is provided.
  • the design of the shading device is optimized for the relative arrangement of reflector, luminous element and shading device.
  • the shading device is arranged in such a way that it does not shadow the reflector with respect to one of the luminous bodies provided in the reflector.
  • the entire reflector inner surface stands for illumination this luminous body available and can be optimized in relation to this.
  • the diameter of the reflector breakthrough is preferably in the range of 10mm and smaller than 38.2mm, so that headlights with high light output, which are smaller than, for example, those with the halogen bulb H4, are possible.
  • the two luminous bodies are a socket-near and a socket-distant luminous body, which can be shaded by a Abschatternase the shading device against each other.
  • a Abschatternase the shading device against each other.
  • the Abschatternase is arranged adjacent to a socket near Wendelabgang the socket distant luminous body.
  • the pedestal remote Wendel can have low beam function or high beam function, without preventing a large luminous efficacy by the sockelnahe filament.
  • the luminous bodies are incandescent filaments, so that the present invention is applicable, for example, to halogen incandescent lamps.
  • the reflector is a paraboloid, a homogeneous light distribution can be implemented with low glare of the accommodating traffic with the assistance of the dimming device.
  • an axis which connects the central axis of the socket-remote luminous element and the center of the reflector aperture is characterized by a ne Abschatternase the shading device runs. In this way, a large area, clearly delimited shaded sector can be implemented on the reflector inner surface and this be optimized with respect to a sockelnahen luminaire.
  • FIG. 1 shows a halogen incandescent lamp in which the shading device of the present invention can be used
  • Fig. 2 shows a shading device according to the present invention with filaments and reflector aperture and
  • Fig. 3 is a plan view of a headlight reflector with marked boundaries of the shaded sectors when using a shading device according to the invention.
  • FIG. 1 shows a halogen incandescent lamp 1 for a vehicle headlight, in which the shading device according to the invention can be used.
  • This halogen incandescent lamp 1 has a glassy, substantially cylindrical lamp vessel 2, in the interior of which two filaments 4, 6, which are aligned parallel to the lamp vessel axis, are arranged, for example, for Produce a high beam and a daytime running light or a high beam and a low beam.
  • the incandescent filaments 4, 6 are formed, for example, as single or double helical tungsten wires and can be acted on by a lamp cap 8 guided contact lugs 10, 12, 14 with a voltage.
  • the sealed end 16 of the lamp vessel 2 is anchored in the lamp cap 8.
  • the off-set incandescent filament 4 is partially surrounded by a dimming cap 18 formed from molybdenum sheet metal.
  • This anti-dazzle device 18 is carried by a power supply 20 of the three power supply lines shown in Figure 1.
  • a metal sleeve 24 is provided, the outer diameter of the minimum for an opening 26 in a reflector 28 in which the halogen incandescent lamp can be arranged , represents.
  • Figure 2 shows an enlarged view of the Abblend- cap 18, the socket-distal helix 4, the sockelnahe coil 6 and the opening 26 in the reflector 28. To increase the clarity of the remaining components of the reflector and the bulb are omitted.
  • the anti-dazzle device shown in Figure 2 18 is formed like a trough, it has a substantially flat bottom
  • FIG 2 the relative position of the reflector aperture 26 of the reflector 28 to the filaments 4, 6 and the Abblendkappe 18 is also shown.
  • the surface effective for the shading of the base-off incandescent filament 4 is formed by the bottom 30 and the curved wall sections 32 of the screening cap 18 including the Abschatternase 40.
  • the anti-dazzle device 18 is mirror-symmetrical with respect to a plane perpendicular to the bottom 30 extending mirror plane which extends in the longitudinal direction through the Abblendkappe 18.
  • the Abschatternase 40 has two Abschatterkanten 42a, 42b, which run to the above mirror plane and whose distance from the bottom 30 to the mirror plane is higher. The distance from the edges 48a, 48b of the wall portion 32 from the bottom 30 is constant up to the Abschatternase 40 out.
  • FIG. 3 shows the plan view of a reflector from its side with the largest diameter in a plane which runs parallel to the plane of the reflector aperture.
  • the diameter of the reflector breakthrough is 38.2mm, for example.
  • the reflector aperture 26 according to the present invention has a smaller diameter, for example, the diameter of the reflector aperture is in the range of 10mm and smaller than 38.2mm.
  • the shadowed sector 44 and the marking 46 subdivide the reflector inner surface in the plan view of FIG. 3 into a radially outer sector A, a radially inner sector B, an inner shaded sector C and an outer shadowed sector D.
  • the shaded sector C extends from the reflector aperture 26 to the marker 46.
  • the shaded sector D extends from the marker 46 to the peripheral portion 50, which is the largest perimeter of the interior surface of the reflector.
  • the shading edges 42a, 42b of the anti-dazzle device 18 have the effect that, when the light-emitting body 4 remote from the base is operated, boundaries 52, 54 of the shaded sectors C, D result. These boundaries have a straight shape and extend preferably from the center of the reflector aperture 26 in the radial direction to the peripheral portion 50.
  • the shaded area from the vertex 56 of the dimming cap 18 is formed by the edges 42a, 42b and by the outer edge 48.
  • the Abschatternase 40 with the Abschatt- edges 42 a, 42 b and by the outer edge 48 a, 48 b is prevents the incandescent filament 4 away from illuminating the sector C.
  • the useful light for the near-base filament 6 can be increased so that the reflector manufacturer can optimize the sector C for the filament-like filament 6.
  • illumination of the sector C can be prevented by the incandescent filament 4 remote from the base and thus a scattered light and increased glare of oncoming vehicles.
  • the straight course of the delimitations shown in FIG. 3 is also obtained by virtue of the fact that the outer edges 48a, 48b of the dimming cap 18 extend parallel to the central axis of the filament 4.
  • the Abblendkappe 18 has a maximum width in the range of 5mm to 12mm. It is preferred that the apex 56 of the Abschatternase 40 is at such a height that an axis on which the center of the reflector aperture 26 and the center axis of the socket distant filament 4 are, passes through the Abschatternase 40.
  • the relative arrangement between Abschatternase 40 and cokelferner filament 4 is chosen in such a way that the Abschatternase 40 is located between the socket remote filament outlet of the socket near filament 6 and the socket near Wendelabgang the socket remote filament 4.
  • the dimming cap according to the present invention on the one hand has the function of shading the direct beam path between the incandescent filament 4 and the incandescent filament 6 and, on the other hand, the function of shading outside the inner circumference of the reflector aperture 26, preferably in the mold the straight line of the boundaries 52, 54 takes place.
  • the shadowed sector 44 may form an angle in the range of 120 ° to 165 °. As a result, this shaded sector 44 can be optimized for the near-base filament 6.
  • the embodiment according to the invention can be used advantageously in daytime running light lamps in which the anti-dazzle device does not have the function of the cut-off line.
  • the anti-dazzle device does not have the function of the cut-off line.
  • a shading device for a headlight lamp having a reflector having a diameter of less than 38.2mm having reflector aperture, and two luminous bodies.
  • the shading device is configured in such a manner that at least one boundary of the shadow-breakthrough sector shaded by the shading device on the reflector, which is between the reflector aperture and a circle around the reflector aperture of 38.2 mm in diameter, when viewed from a to the reflector breakthrough parallel plane lies on a straight line.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un dispositif d'obscurcissement destiné à une ampoule de projecteur comprenant : un réflecteur qui présente une ouverture de diamètre inférieure à 38,2 mm; et deux corps luminescents. Le dispositif d'obscurcissement a une configuration telle qu'au moins une limitation du secteur proche de l'ouverture, obscurci par le dispositif d'obscurcissement sur le réflecteur, qui se trouve entre l'ouverture du réflecteur et un certain périmètre autour de celle-ci ayant un diamètre de 38,2 mm, se trouve sur une ligne droite lors de l'observation depuis un plan parallèle à l'ouverture du réflecteur.
EP07848078A 2006-12-21 2007-12-12 Dispositif d'obscurcissement Withdrawn EP2092551A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006060772A DE102006060772A1 (de) 2006-12-21 2006-12-21 Abblendkappe für Zweiwendelhalogenlampe unterschiedlicher Leistung zur Nutzlichtherhöhung
PCT/EP2007/063767 WO2008077782A2 (fr) 2006-12-21 2007-12-12 Dispositif d'obscurcissement

Publications (1)

Publication Number Publication Date
EP2092551A2 true EP2092551A2 (fr) 2009-08-26

Family

ID=39431579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07848078A Withdrawn EP2092551A2 (fr) 2006-12-21 2007-12-12 Dispositif d'obscurcissement

Country Status (5)

Country Link
US (1) US20100067247A1 (fr)
EP (1) EP2092551A2 (fr)
JP (1) JP5027246B2 (fr)
DE (1) DE102006060772A1 (fr)
WO (1) WO2008077782A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010001255A1 (de) * 2010-01-27 2011-07-28 Osram Gesellschaft mit beschränkter Haftung, 81543 Leuchtenanordnung
WO2014180806A1 (fr) * 2013-05-07 2014-11-13 Koninklijke Philips N.V. Lampe pour éclairage avant d'automobile munie de déflecteur
DE102015207019A1 (de) * 2015-04-17 2016-10-20 Osram Gmbh Kraftfahrzeugscheinwerferlampe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1430070A (en) * 1972-08-11 1976-03-31 Thorn Electrical Ind Ltd Manufacture of electrical devices having sealed envelopes
JPH09237504A (ja) * 1996-02-23 1997-09-09 Patent Treuhand Ges Elektr Gluehlamp Mbh 下向き及び上向きライト用自動車前照灯
DE19624688A1 (de) * 1996-06-20 1998-01-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Abschattungsvorrichtung für eine Kraftfahrzeugscheinwerferlampe und Herstellungsverfahren für eine derartige Abschattungsvorrichtung
FR2782148B1 (fr) * 1998-08-10 2001-02-09 Valeo Vision Projecteur de vehicule automobile pourvu d'une lampe a deux filaments et d'un miroir perfectionnes
JP2000173333A (ja) * 1998-12-08 2000-06-23 Ichikoh Ind Ltd 車両用灯具
DE10215397A1 (de) * 2002-04-08 2003-10-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Glühlampe für Kraftfahrzeugscheinwerfer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP2010514117A (ja) 2010-04-30
DE102006060772A1 (de) 2008-06-26
JP5027246B2 (ja) 2012-09-19
WO2008077782A3 (fr) 2009-02-05
US20100067247A1 (en) 2010-03-18
WO2008077782A2 (fr) 2008-07-03

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Inventor name: ZELT, SASCHA

Inventor name: BEHR, GERHARD

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Inventor name: SEICHTER, CHRISTIAN

Inventor name: WITTMANN, KLAUS

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