EP0794382A2 - Motorrad- und/oder Kraftfahrzeugsscheinwerfer - Google Patents

Motorrad- und/oder Kraftfahrzeugsscheinwerfer Download PDF

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Publication number
EP0794382A2
EP0794382A2 EP97102497A EP97102497A EP0794382A2 EP 0794382 A2 EP0794382 A2 EP 0794382A2 EP 97102497 A EP97102497 A EP 97102497A EP 97102497 A EP97102497 A EP 97102497A EP 0794382 A2 EP0794382 A2 EP 0794382A2
Authority
EP
European Patent Office
Prior art keywords
headlight
dimmer
screen
dimmer screen
light source
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.)
Granted
Application number
EP97102497A
Other languages
English (en)
French (fr)
Other versions
EP0794382B1 (de
EP0794382A3 (de
Inventor
Roberto Cella
Davide Lorenzi
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.)
Fratelli Pagani SpA
Original Assignee
Fratelli Pagani SpA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11373509&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0794382(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fratelli Pagani SpA filed Critical Fratelli Pagani SpA
Publication of EP0794382A2 publication Critical patent/EP0794382A2/de
Publication of EP0794382A3 publication Critical patent/EP0794382A3/de
Application granted granted Critical
Publication of EP0794382B1 publication Critical patent/EP0794382B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/686—Blades, i.e. screens moving in a vertical plane

Definitions

  • the present invention relates to a headlight for applications in the motoring field and particularly in the field of motor-cycles.
  • the known drawbacks of headlights of this type lie basically in the fact that they make it possible to obtain only the high beam function or the lower beam function, which are obtained by dimming or not dimming part of the light rays coming from the reflector.
  • this type of headlight therefore, it is necessary to add another (of the same type or different) that produces the beam not produced by the first, with a resulting increase in costs and size.
  • the known drawback in providing a single projector-type headlight with two functions lies in the fact that, in the case of the lower beam function, the optical axis of the headlight must be rotated downwards through a certain angle such as to ensure that the road surface is perfectly illuminated. Consequently, when the headlight is switched to its high beam function, it is rotated downwards through the same angle as the lower beam, as foreseen by the technical solutions adopted up to now, impairing its efficiency. Therefore, when switching from one function to the other, a system for correcting the beam must be introduced so that the two beams are always optimal depending upon the function chosen. Whatever the beam correction system, it introduces not only design and application problems, but also an inevitable increase in costs.
  • the aim of the present invention is to create a projector-type headlight that provides both high beam and lower beam functions, overcoming the above disadvantages and in particular avoiding the use of costly systems for correcting the beam when passing from one function to the other.
  • a further aim of the invention is to create a headlight for use both on motor-cycles and on motor-cars that is of reduced weight and size.
  • Other advantages of the invention consist in the fact that it has two basic functions (high beam and lower beam), with a very small illuminating surface, or it has a dual headlight that is small in size and has a high performance for both functions.
  • the headlight according to the invention produces a high beam, which is partially dimmed by means of a dimmer screen to produce a low beam, without any need for the two beams to be corrected by corrective, optical or other types of systems.
  • a headlight 3 is made up by a light source 5, a lens 8, a reflector 6 that reflects the light emitted by the light source towards the lens and a lens holder cap 7.
  • an electromagnet 1 which serves to operate a dimmer 2 is housed in a seat 4.
  • the dimmer 2 reaches above or is positioned in the vicinity of the optical axis 9 of the headlight, so as to block all the rays which, striking the half plane below the optical axis 9 in which the dimmer 2 is situated, would be refracted upward by the lens 8.
  • the lens 8 With the dimmer situated above or in the vicinity of the optical axis 9, therefore, all rays reaching the lens 8 pass though it and in so doing are refracted downwards by an angle with respect to the optical axis 9 that depends on the angle of incidence on the lens.
  • the high beam function is illustrated in Figure 2.
  • the energized electromagnet 1 lowers the dimmer 2 beneath the optical axis, so that all the rays reach the lens 8. By so doing the unlit area of the field of vision is illuminated and a deep forward lighting beam is thus obtained.
  • the particular surface of the reflector 6 makes it possible to keep the two beams aligned, without any need for correction systems, whilst maintaining the same excellent performance and excellent lighting of the road surface that are obtained with projector-type headlights with a single function (lower beam or high beam). It therefore makes it possible to switch from one function to the other simply by moving the dimmer screen 2 from one position to the other.
  • the power necessary for a single headlight will be the sum of the power of the lamp and that of the electromagnet.
  • the latter must be sufficient to ensure a steady and rapid movement of the dimmer, so as not to generate troublesome vibrations during switching from one function to the other.
  • shock absorbers could also be provided at the end of the stroke.
  • the movement of the dimmer 2 is vertical, but it can be obtained in any other way, for example by rotation on a pivot.
  • Operation of the dimmer itself can also be carried out manually, by means of an electric stepper motor etc..
  • the preferred embodiment of the invention uses an electromagnet since this has the necessary power, restricts the overall size of the device and enables it to be of simple construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP97102497A 1996-03-05 1997-02-17 Motorrad- und/oder Kraftfahrzeugsscheinwerfer Revoked EP0794382B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MI000429A IT1283192B1 (it) 1996-03-05 1996-03-05 Proiettore di tipo a proiezione per applicazioni in campo motociclistico e/o automobilistico
ITMI960429 1996-03-05

Publications (3)

Publication Number Publication Date
EP0794382A2 true EP0794382A2 (de) 1997-09-10
EP0794382A3 EP0794382A3 (de) 1998-08-12
EP0794382B1 EP0794382B1 (de) 2001-06-06

Family

ID=11373509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102497A Revoked EP0794382B1 (de) 1996-03-05 1997-02-17 Motorrad- und/oder Kraftfahrzeugsscheinwerfer

Country Status (9)

Country Link
EP (1) EP0794382B1 (de)
JP (1) JPH09330603A (de)
AT (1) ATE201925T1 (de)
DE (1) DE69705082T2 (de)
DK (1) DK0794382T3 (de)
ES (1) ES2159781T3 (de)
GR (1) GR3036555T3 (de)
IT (1) IT1283192B1 (de)
PT (1) PT794382E (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2332741A (en) * 1997-12-24 1999-06-30 Koito Mfg Co Ltd Headlight which is kept on as long as passing switch is held on
EP0990839A2 (de) 1998-09-28 2000-04-05 Zizala Lichtsysteme GmbH Abblendlicht-/Fernlichtscheinwerfereinheit für ein Kraftfahrzeug
GB2350882A (en) * 1999-03-26 2000-12-13 Koito Mfg Co Ltd Vehicle headlamp with auxiliary beam
FR2796448A1 (fr) * 1999-07-13 2001-01-19 Valeo Vision Projecteur pour vehicule automobile avec un cache a multipositions
EP1197387A1 (de) 2000-10-12 2002-04-17 Valeo Vision Kraftfahrzeugscheinwerfer mit verstellbarer Blende
EP1283390A2 (de) 2001-08-10 2003-02-12 Ichikoh Industries, Ltd. Scheinwerfer mit zwei Funktionen
FR2845330A1 (fr) 2002-10-04 2004-04-09 Valeo Vision Dispositif d'eclairage et/ou de signalisation du type projecteur pour vehicule automobile
EP1201988A3 (de) * 2000-10-25 2004-06-23 Zizala Lichtsysteme GmbH Fahrzeugscheinwerfer
US6827473B2 (en) * 2001-10-18 2004-12-07 Koito Manufacturing Co., Ltd. Projection-type headlamp also having infrared light emitting function
EP1985915A1 (de) 2007-04-25 2008-10-29 Ichikoh Industries, Ltd. Fahrzeugscheinwerfer
EP2028414A1 (de) * 2007-08-22 2009-02-25 Koito Manufacturing Co., Ltd Fahrzeugscheinwerfer
US20130163268A1 (en) * 2011-12-27 2013-06-27 Ichikoh Industries, Ltd. Vehicle headlamp

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4144381B2 (ja) 2003-03-07 2008-09-03 市光工業株式会社 ヘッドランプ
JP4321450B2 (ja) * 2004-07-26 2009-08-26 株式会社デンソー 視覚認識支援装置
JP4400884B2 (ja) 2005-06-08 2010-01-20 株式会社小糸製作所 車輌用灯具
JP4518496B2 (ja) * 2005-06-23 2010-08-04 株式会社小糸製作所 車輌用灯具
JP4614347B2 (ja) 2005-06-23 2011-01-19 株式会社小糸製作所 車輌用灯具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1389291A (en) * 1920-01-08 1921-08-30 Evan P Bone Headlamp
GB2179132A (en) * 1985-08-10 1987-02-25 Bosch Gmbh Robert Headlamp for dipped light or fog light, of vehicles
DE3806658A1 (de) * 1988-03-02 1989-09-14 Huppertz & Schneider Gmbh & Co Scheinwerfer, insbesondere zum einsatz bei fahrzeugen unter tage
FR2657681A1 (fr) * 1990-01-30 1991-08-02 Bosch Gmbh Robert Projecteur pour vehicules automobiles, dont la source de lumiere est une lampe de decharge de gaz.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1389291A (en) * 1920-01-08 1921-08-30 Evan P Bone Headlamp
GB2179132A (en) * 1985-08-10 1987-02-25 Bosch Gmbh Robert Headlamp for dipped light or fog light, of vehicles
DE3806658A1 (de) * 1988-03-02 1989-09-14 Huppertz & Schneider Gmbh & Co Scheinwerfer, insbesondere zum einsatz bei fahrzeugen unter tage
FR2657681A1 (fr) * 1990-01-30 1991-08-02 Bosch Gmbh Robert Projecteur pour vehicules automobiles, dont la source de lumiere est une lampe de decharge de gaz.

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2332741A (en) * 1997-12-24 1999-06-30 Koito Mfg Co Ltd Headlight which is kept on as long as passing switch is held on
GB2332741B (en) * 1997-12-24 1999-11-10 Koito Mfg Co Ltd Vehicle headlamp
DE19857341B4 (de) * 1997-12-24 2006-03-02 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfer mit einem verstellbaren optischen Element
EP0990839A2 (de) 1998-09-28 2000-04-05 Zizala Lichtsysteme GmbH Abblendlicht-/Fernlichtscheinwerfereinheit für ein Kraftfahrzeug
GB2350882A (en) * 1999-03-26 2000-12-13 Koito Mfg Co Ltd Vehicle headlamp with auxiliary beam
GB2350882B (en) * 1999-03-26 2002-09-25 Koito Mfg Co Ltd Vehicular headlamp apparatus
US7021791B1 (en) 1999-03-26 2006-04-04 Koito Manufacturing Co., Ltd. Vehicular headlamp apparatus
FR2796448A1 (fr) * 1999-07-13 2001-01-19 Valeo Vision Projecteur pour vehicule automobile avec un cache a multipositions
EP1197387A1 (de) 2000-10-12 2002-04-17 Valeo Vision Kraftfahrzeugscheinwerfer mit verstellbarer Blende
FR2815310A1 (fr) 2000-10-12 2002-04-19 Valeo Vision Projecteur pour vehicule automobile a ecran d'occultation mobile
EP1201988A3 (de) * 2000-10-25 2004-06-23 Zizala Lichtsysteme GmbH Fahrzeugscheinwerfer
US6981790B2 (en) 2001-08-10 2006-01-03 Ichikoh Industries, Ltd. Two-light headlamp
EP1283390A2 (de) 2001-08-10 2003-02-12 Ichikoh Industries, Ltd. Scheinwerfer mit zwei Funktionen
EP1283390A3 (de) * 2001-08-10 2006-05-10 Ichikoh Industries, Ltd. Scheinwerfer mit zwei Funktionen
US6827473B2 (en) * 2001-10-18 2004-12-07 Koito Manufacturing Co., Ltd. Projection-type headlamp also having infrared light emitting function
FR2845330A1 (fr) 2002-10-04 2004-04-09 Valeo Vision Dispositif d'eclairage et/ou de signalisation du type projecteur pour vehicule automobile
EP1985915A1 (de) 2007-04-25 2008-10-29 Ichikoh Industries, Ltd. Fahrzeugscheinwerfer
US7736038B2 (en) 2007-04-25 2010-06-15 Ichikoh Industries, Ltd. Vehicle headlight
EP2028414A1 (de) * 2007-08-22 2009-02-25 Koito Manufacturing Co., Ltd Fahrzeugscheinwerfer
US20130163268A1 (en) * 2011-12-27 2013-06-27 Ichikoh Industries, Ltd. Vehicle headlamp
US8646955B2 (en) * 2011-12-27 2014-02-11 Ichikoh Industries, Ltd. Vehicle headlamp

Also Published As

Publication number Publication date
IT1283192B1 (it) 1998-04-16
ATE201925T1 (de) 2001-06-15
JPH09330603A (ja) 1997-12-22
DE69705082D1 (de) 2001-07-12
ITMI960429A0 (de) 1996-03-05
DK0794382T3 (da) 2001-09-24
EP0794382B1 (de) 2001-06-06
DE69705082T2 (de) 2002-02-07
PT794382E (pt) 2001-11-30
ES2159781T3 (es) 2001-10-16
GR3036555T3 (en) 2001-12-31
ITMI960429A1 (it) 1997-09-05
EP0794382A3 (de) 1998-08-12

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