EP0263160A1 - Head lamp, in particular headlight for cars, provided with several filaments adapted to emit beams of white and/or coloured light to be used as sealed beam light and foglight - Google Patents
Head lamp, in particular headlight for cars, provided with several filaments adapted to emit beams of white and/or coloured light to be used as sealed beam light and foglightInfo
- Publication number
- EP0263160A1 EP0263160A1 EP87902688A EP87902688A EP0263160A1 EP 0263160 A1 EP0263160 A1 EP 0263160A1 EP 87902688 A EP87902688 A EP 87902688A EP 87902688 A EP87902688 A EP 87902688A EP 0263160 A1 EP0263160 A1 EP 0263160A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filament
- head lamp
- light beam
- light
- emit
- 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- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K9/00—Lamps having two or more incandescent bodies separately heated
- H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp
-
- 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
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/125—Coloured light
-
- 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
- F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
- F21S41/55—Attachment thereof
Definitions
- HEAD LAMP IN PARTICULAR HEADLIGHT FOR CARS, PROVIDED WITH SEVERAL FILAMENTS ADAPTED TO EMIT BEAMS OF WHITE AND/OR COLOURED LIGHT TO BE USED AS SEALED BEAM LIGHT AND FOGLIGHT
- This invention relates to the field of lighting fittings, and more particularly to a headlamp designed for cars and motor vehicles and adapted to selectively emit a beam of white or coloured light, thus either acting as country beam or dipped headlight or fog light.
- the forward lamp assembly of cars and motor vehicles in compliance with technical as well as legislative rules practically unvarying in all indus- trialized countries, are designed to emit a country light beam essentially parallel to the roadway (driving or country beam) and a second light beam deviated towards the roadway (dipped headlight) to be used when two motor vehicles cross each other or where there is a sufficient lighting.
- a third light side light having as main purpose the definition of the overall cross-dimension of the motor vehicle is provided.
- Such head lamps that not always attain the object, must be mounted ahead under the main headlights and have besides a high cost several drawbacks such as the easiness of being damaged or broken during parking, the exposure to splashes of mud, dust, and the collision . of stones or other foreign bodies raised by the wheels during the run.
- An object of the invention is to provide a head lamp of the mentioned type which can be easily mounted in lieu of the existing lamps without any modification in the parabolic reflecting surface of the head lamp, thus allowing an additional, eventually coloured light beam to be emitted in addition or replacement of the ordinary night beams.
- a head lamp comprising in combination a cap provided with a mounting to arrange the lamp in a restrained position with respect to the reflecting parabola of the headlight, said mounting being provided in turn with lugs engaged by the respective leads, a bulb secured to said cap, and a set of three filaments located within the bulb, one of which in focal position for the emission of a country light beam, the second in an out-of-centre position associated to a cup for the emission of a dipped light beam, the third complementa ⁇ ry filament independent of the former being screened by a further cup preferably directed downwards and designed to emit a white or coloured fog light beam.
- said fog light beam provided by the third filament is coloured by a corresponding coloured area provided on a surface of the bulb which is optically associated to said complementary filament.
- Fig. 1 shows schematically a head lamp according to the invention in side view and in enlarged scale
- Fig. 2 is a view similar to Fig. 1 showing a second version of the head lamp.
- a mounting cap of a head lamp for cars and motor vehicles is generally designated by 1 and carries a bulb 2 of transparent dielectric material.
- Cap 1 is provided with lugs 3 and mounting flanges 4 having a shape such as to secure correctly the lamp within the reflecting parabola of the headlight. All these members are well-known and do not need a particular description.
- a filament 5 is located within bulb 2 in a position such that when the lamp is in its operating position filament itself coincides with the focal point of the reflecting parabolic surface, thus causing a light beam to be emitted which is parallel to the optical axis of the head lamp (socalled country beam) .
- the invention provides in bulb 2 a third additional filament 8 having the function of either integrating or replacing the others, thus meeting in particular the necessity of the additional fog lights.
- the light emitted by third filament 8 is screened by cup 9 which preferably has the concavity directed downwards.
- third filament 8 has the function of emitting a light beam which either integrates the beam projected by conventional filaments 5 and 6 or replaces it in particular in case of failure of the filaments.
- the light generated by third filament 8 can advantageously be coloured according to a suitable chromatic tonality, for example yellow.
- This colouring can be provided by a circular screening 10 which is shown dashed in the drawing and either is arranged in the same bulb 2 or provided separately from the latter and located in the optical area associated to filament 8.
- Such screening can be formed of one or more lenses.
- a partition 11 between filaments 6 and 8 is provided.
- partition 11 is provided with screened holes crossed by rheophores 12 connected to lugs 13 which in turn are connected to the control means, said partition being preferably provided either with louvers compensating the thermal expansion or other suitable technical means.
- Fig. 2 a modification in the above described head lamp is shown.
- screening cup 9 of additional filament 8 is replaced by cup 14 having geometric and optical characteristics such as to allow a light beam having the same function as above mentioned to be emitted.
- filaments can have a cross extension to said axis and an inclined or curved extension as well.
- the head lamp according to the invention can be constructed whether in the conventional or standard or halogen form.
- filling gas, shape and size of the bulb, mounting cap, supply voltage, light power, choice of materials a.s.o. is concerned, reference can be made to the present technology with the only modification concerning an additional connecting lugs 13 associated to additional filament 8.
- head lamp according to the invention is fit for other lighting systems such as those for theatre, TV and cinematograph shot a.s.o.
Abstract
Projecteur comprenant un premier filament (5) situé à une distance focale de la parabole de réflexion est conçu pour émettre une lumière à longue portée, un second filament (6) étant situé axialement par rapport au premier et étant masqué de manière à fournir une lumière de feux de croisement, et un troisième filament (8) indépendant du premier et propre à émettre sélectivement un faisceau de lumière blanche ou colorée, faisant ainsi office de feu antibrouillard.Projector comprising a first filament (5) situated at a focal distance from the reflection dish is designed to emit long-range light, a second filament (6) being located axially with respect to the first and being masked so as to provide light dipped beam, and a third filament (8) independent of the first and suitable for selectively emitting a beam of white or colored light, thus acting as a fog light.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8640410A IT8640410A0 (en) | 1986-04-07 | 1986-04-07 | PLUSTARS |
IT4041086 | 1986-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0263160A1 true EP0263160A1 (en) | 1988-04-13 |
Family
ID=11249207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87902688A Withdrawn EP0263160A1 (en) | 1986-04-07 | 1987-04-06 | Head lamp, in particular headlight for cars, provided with several filaments adapted to emit beams of white and/or coloured light to be used as sealed beam light and foglight |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0263160A1 (en) |
AU (1) | AU7288587A (en) |
IT (1) | IT8640410A0 (en) |
WO (1) | WO1987006325A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4839779A (en) * | 1987-12-08 | 1989-06-13 | Quintech Corporation | Multiple color light with structure to prevent color bleeding |
DE69517789T2 (en) * | 1995-03-09 | 2001-02-01 | St Microelectronics Srl | Multi-filament lamp, process for brightness control and associated control and monitoring circuits |
DE19602252A1 (en) * | 1995-09-22 | 1997-03-27 | Branimir Marinkic | Multi-colour lamp |
DE19916835A1 (en) * | 1999-04-14 | 2002-01-03 | Volkswagen Ag | Motor-vehicle head-lamp with fog-light and anti-dazzle feature, has shrouding for second and third filaments |
DE10054814A1 (en) | 2000-11-04 | 2002-05-08 | Philips Corp Intellectual Pty | Images registration method e.g. for medical image matching, magnetic resonance tomography, involves transforming discrete images into registered images |
DE10131444A1 (en) * | 2001-06-29 | 2003-01-09 | Philips Corp Intellectual Pty | More thread-motor vehicle headlight lamp |
KR100506765B1 (en) * | 2002-11-11 | 2005-08-05 | 전영일 | Apparatus and method for controlling of headlight in vehicle and multi-function structured headlight lamp therefor |
GB2397942A (en) * | 2003-02-03 | 2004-08-04 | Jonathan Richard Swift | Multi-coloured light bulb |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH145549A (en) * | 1930-02-03 | 1931-02-28 | Lanz Ernst | Headlight lamp for vehicles. |
FR726975A (en) * | 1931-11-27 | 1932-06-10 | Three-filament light bulb for automobile | |
DE860521C (en) * | 1951-07-13 | 1952-12-22 | Bruno Lirtz | Headlight bulb |
DE2134714A1 (en) * | 1971-07-12 | 1973-01-25 | Berger Walter | ELECTRIC TWIN-TURNED LIGHT BULB FOR USE IN MOTOR TRAFFIC WITH A HALOGUE ADDITIVE HIGH-PRESSURE GAS FILLING AND A SHIELD |
DE2757713A1 (en) * | 1977-12-23 | 1979-06-28 | Bayerische Motoren Werke Ag | Motor vehicle headlight - has main beam filament of focal point of one of two part-paraboloid reflectors |
-
1986
- 1986-04-07 IT IT8640410A patent/IT8640410A0/en unknown
-
1987
- 1987-04-06 AU AU72885/87A patent/AU7288587A/en not_active Abandoned
- 1987-04-06 WO PCT/IT1987/000030 patent/WO1987006325A1/en not_active Application Discontinuation
- 1987-04-06 EP EP87902688A patent/EP0263160A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8706325A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU7288587A (en) | 1987-11-09 |
IT8640410A0 (en) | 1986-04-07 |
WO1987006325A1 (en) | 1987-10-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19880421 |
|
17Q | First examination report despatched |
Effective date: 19890503 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19891103 |