EP0860652A2 - Signalleuchte für Fahrzeuge - Google Patents

Signalleuchte für Fahrzeuge Download PDF

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Publication number
EP0860652A2
EP0860652A2 EP98300941A EP98300941A EP0860652A2 EP 0860652 A2 EP0860652 A2 EP 0860652A2 EP 98300941 A EP98300941 A EP 98300941A EP 98300941 A EP98300941 A EP 98300941A EP 0860652 A2 EP0860652 A2 EP 0860652A2
Authority
EP
European Patent Office
Prior art keywords
reflector
outer cover
mask
signal lamp
vehicle signal
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Withdrawn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
EP98300941A
Other languages
English (en)
French (fr)
Other versions
EP0860652A3 (de
Inventor
Francis Thompson
Nicholas William Tysoe
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.)
Koito Europe Ltd
Original Assignee
Britax Vega Ltd
Koito Europe Ltd
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 Britax Vega Ltd, Koito Europe Ltd filed Critical Britax Vega Ltd
Publication of EP0860652A2 publication Critical patent/EP0860652A2/de
Publication of EP0860652A3 publication Critical patent/EP0860652A3/de
Withdrawn legal-status Critical Current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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • 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
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/255—Filters
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source

Definitions

  • This invention relates to a vehicle signal lamp of the type having a reflector and a substantially parallel-sided transparent outer cover, optical distribution of the light output from the lamp being controlled by the reflector.
  • the reflector takes the form of a slightly distorted parabola so as to produce a divergent beam of light.
  • the reflector may be a true parabola with a mesh of pillow optics on its surface. The reflector surface is easily visible through the outer cover which is made of a material of the colour required for the light to be emitted by the signal lamp.
  • a reversing lamp is required to emit white light when it is illuminated but is commonly arranged to appear red when not illuminated so as to conform to the appearance of adjacent rear lamps.
  • Such lamps are commonly described as chromatic lamps.
  • Chromatic lamps have required the provision of optical elements on the outer transparent cover or lens.
  • An object of the present invention is to provide a chromatic lamp in which the outer transparent cover is substantially parallel-sided and does not have any effect on the distribution of the emitted light.
  • a vehicle signal lamp of the type described above has an opaque mask disposed between its reflector and its outer cover with a central opening through which light from the reflector reaches the outer cover, the mask comprising a concave reflector covered by a transparent coloured layer and arranged to reflect light incident thereon from outside the outer cover.
  • the colour of the transparent coating is chosen in accordance with the required appearance of the lamp when not illuminated.
  • a vehicle signal lamp of the known type comprises a bulb 10, a parabolic reflector 12 and a transparent outer cover 14.
  • the outer cover 14 is parallel-sided and does not affect the distribution of the emitted light.
  • the reflector 12 has pillow optics, such as the formations 16, on its front surface which has a metallised reflective coating 18.
  • the transparent cover 14 is coloured in accordance with the required colour of the emitted light, for example, red. Emitted light such as the rays 20 and 22 are coloured by the cover disk 14. Similarly, incident white light from outside, such as the ray 24, is reflected as the ray 26 which has been coloured both on its inward and outward passage through the cover 14.
  • a signal lamp in accordance with the invention comprises a bulb 30 surrounded by a reflector 32 of shape between a paraboloid and an ellipsoid arranged to give a dispersed convergent beam.
  • a reflector 32 In front of the reflector 32 is an opaque mask 34 having a central hole 36.
  • a parallel-sided transparent cover 38 In front of the mask 34 is a parallel-sided transparent cover 38 which does not have any effect on the dispersal of the emitted light.
  • the mask 34 has pillow optics 40 on its front surface which has a metallised reflective layer on top of which is a transparent coating 42 coloured in accordance with the required appearance of the signal lamp when the bulb 30 is not illuminated.
  • a transparent coating 42 coloured in accordance with the required appearance of the signal lamp when the bulb 30 is not illuminated.
  • the effect of this is that light from the bulb 30 is reflected by the reflector 32 and emerges as rays such as the rays 44, 46, 48 and 40 which are do not pass through the coating 42 and therefore are not affected by its colour.
  • the light emitted is white light, suitable for use as a reversing lamp. If coloured light is required, then either the bulb 30 is replaced by a coloured bulb or a coloured filter (not shown) is fitted to fill the hole 36.
  • Incident white light from the outside of the cover 38 is reflected as ray 44 and is coloured by the coating 42 on the metallised surface 40 of the mask 34.
  • the reflector 32 Since vehicle lamps are required to give a beam which is more widely divergent in the horizontal direction than in the vertical direction, the reflector 32 is not symmetrical about the optical axis of the lamp. Instead it has an opaque flat bottom wall 46 which is of the same colour as the transparent coating 42. The effect of this is that any downwardly incident light which passes through the hole 36 falls on the coloured wall 46 with the result that, if it re-emerges through the hole 36 after having been reflected subsequently by the reflector 32, it is also coloured in accordance with the required non-illuminated appearance of the lamp.
  • Figure 3 illustrates a modified mask 60 which can be used in place of the mask 34 of Figure 2.
  • the modified mask 60 is moulded from transparent material coloured in accordance with the required non-illuminated appearance of the lamp and has pillow optics and a bright metallised coating 62 on its rear surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Traffic Control Systems (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP98300941A 1997-02-22 1998-02-10 Signalleuchte für Fahrzeuge Withdrawn EP0860652A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9703712.1A GB9703712D0 (en) 1997-02-22 1997-02-22 Vehicle signal lamp
GB9703712 1997-02-22

Publications (2)

Publication Number Publication Date
EP0860652A2 true EP0860652A2 (de) 1998-08-26
EP0860652A3 EP0860652A3 (de) 1999-02-24

Family

ID=10808134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98300941A Withdrawn EP0860652A3 (de) 1997-02-22 1998-02-10 Signalleuchte für Fahrzeuge

Country Status (3)

Country Link
EP (1) EP0860652A3 (de)
JP (1) JPH10241415A (de)
GB (1) GB9703712D0 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916843A1 (de) * 1999-04-14 2000-12-14 Volkswagen Ag Leuchte für Kraftfahrzeuge
GB2360835A (en) * 2000-03-28 2001-10-03 Koito Mfg Co Ltd A vehicular lamp
GB2369426A (en) * 2000-11-20 2002-05-29 Visteon Global Tech Inc Decorative coating for reflectors in vehicle lamps
WO2003040614A1 (en) * 2001-11-02 2003-05-15 3M Innovative Properties Company Automotive lamp
US7077550B2 (en) 2001-11-02 2006-07-18 3M Innovative Properties Company Automotive lamp with light transmissive colored member
DE102005011635A1 (de) * 2005-03-14 2006-09-21 Volkswagen Ag Fahrzeugleuchte
US7175293B2 (en) 2001-11-02 2007-02-13 3M Innovative Properties Company Decorative article and vehicular lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591968B1 (fr) * 1985-12-24 1988-04-01 Cibie Projecteurs Feu de signalisation a eclairement colore pour vehicule automobile
US5010458A (en) * 1989-09-01 1991-04-23 General Motors Corporation Headlamp assembly
IT1267221B1 (it) * 1994-04-20 1997-01-28 Seima Italiana Spa Fanale per autoveicoli con riflettore a lenti

Non-Patent Citations (1)

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

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916843A1 (de) * 1999-04-14 2000-12-14 Volkswagen Ag Leuchte für Kraftfahrzeuge
DE19916843B4 (de) * 1999-04-14 2008-05-08 Volkswagen Ag Fahrzeugleuchte
GB2360835A (en) * 2000-03-28 2001-10-03 Koito Mfg Co Ltd A vehicular lamp
GB2360835B (en) * 2000-03-28 2002-06-26 Koito Mfg Co Ltd A vehicular lamp
US6637920B2 (en) 2000-03-28 2003-10-28 Koito Manufacturing Co., Ltd. Vehicular lamp having improved luminance of tinted light
GB2369426A (en) * 2000-11-20 2002-05-29 Visteon Global Tech Inc Decorative coating for reflectors in vehicle lamps
GB2369426B (en) * 2000-11-20 2003-03-05 Visteon Global Tech Inc Decorative coating for exterior automotive lighting applications
US6561679B1 (en) 2000-11-20 2003-05-13 Visteon Global Technologies, Inc. Decorative coating for exterior automotive lighting applications
WO2003040614A1 (en) * 2001-11-02 2003-05-15 3M Innovative Properties Company Automotive lamp
US7077550B2 (en) 2001-11-02 2006-07-18 3M Innovative Properties Company Automotive lamp with light transmissive colored member
US7175293B2 (en) 2001-11-02 2007-02-13 3M Innovative Properties Company Decorative article and vehicular lamp
DE102005011635A1 (de) * 2005-03-14 2006-09-21 Volkswagen Ag Fahrzeugleuchte

Also Published As

Publication number Publication date
JPH10241415A (ja) 1998-09-11
GB9703712D0 (en) 1997-04-09
EP0860652A3 (de) 1999-02-24

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