EP0336908A2 - Leuchte und deren optische Einheit für Kraftfahrzeuge - Google Patents

Leuchte und deren optische Einheit für Kraftfahrzeuge Download PDF

Info

Publication number
EP0336908A2
EP0336908A2 EP89830145A EP89830145A EP0336908A2 EP 0336908 A2 EP0336908 A2 EP 0336908A2 EP 89830145 A EP89830145 A EP 89830145A EP 89830145 A EP89830145 A EP 89830145A EP 0336908 A2 EP0336908 A2 EP 0336908A2
Authority
EP
European Patent Office
Prior art keywords
bodywork
transparent glass
headlamp
auxiliary member
lamp
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
EP89830145A
Other languages
English (en)
French (fr)
Other versions
EP0336908A3 (en
EP0336908B1 (de
Inventor
Claudio Cavalla
Giorgio Ferrero
Salvatore Di Salvo
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.)
Fiat Auto SpA
Original Assignee
Fiat Auto 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
Application filed by Fiat Auto SpA filed Critical Fiat Auto SpA
Publication of EP0336908A2 publication Critical patent/EP0336908A2/de
Publication of EP0336908A3 publication Critical patent/EP0336908A3/en
Application granted granted Critical
Publication of EP0336908B1 publication Critical patent/EP0336908B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F21S43/20—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

Definitions

  • the present invention relates to a motor vehicle headlamp of the type comprising: - a body adapted to be mounted on the bodywork of the motor vehicle, - a lamp within the body, - a transparent glass having an inner prismatic surface for receiving the light rays emitted by the lamp and concentrating them into an outwardly-directed light beam with predetermined characteristics, the inner prismatic surface of the transparent glass including diffusing lenses for diffusing the light rays which pass through the transparent glass from the exterior into the body of the headlamp in all directions, - a coloured filter interposed between the lamp and the transparent glass.
  • the structure of the headlamp according to the Applicant's aforesaid application, to which reference is made here, has the disadvantage of requiring the headlamp to have different components according to the colour of the motor vehicle in which the headlamp is to be installed. This obviously causes complications in the management of the spare parts and the possibilities of errors during assembly.
  • the object of the present invention is to provide a headlamp with a simpler construction than that of the headlamp described in the aforesaid patent application, while allowing equivalent aesthetic results to be achieved at a lower cost and with easier organisation of spare parts.
  • this object is achieved by virtue of the fact that the body of the headlamp is mounted on a rear face of a flat portion of bodywork having at least one aperture for the passage of light rays emitted by the lamp, and in that an auxiliary member in the form of a frame is mounted on a front face of the bodywork portion corresponding to the said rear face, the frame being interposed between the bodywork portion and the transparent glass and being adapted to be painted with the bodywork, the aperture in the flat portion of the bodywork having dimensions such as to allow the passage solely of light rays within a solid angle through which the transparent glass is visible from the centre of the lamp.
  • the auxiliary member may be mounted on the bodywork before the painting stage, simplifying the subsequent operations of installation of optical systems in the vehicle.
  • the transparent glass described in European patent application no. EP-A-0 176 582 mentioned above it is possible to diffuse the light coming from the exterior so that, when the light is switched off, the transparent glass assumes the same colour as the bodywork.
  • the invention also provides an optical system for motor vehicles, characterised in that it includes several headlamps of the type specified above, with the body, the auxiliary member and the transparent glass in common.
  • an optical system for motor vehicles is adapted to be mounted on a flat bodywork portion C, normally disposed at the front or rear of the motor vehicle.
  • the optical system 1 includes a body 2 in the form of a half-shell the interior of which is defined by partition walls 3 delimiting compartments 4.
  • Each compartment 4 houses a lamp 5 connected to the body 2 and enclosed by a coloured filter 6 of the cap type.
  • the body 2 is connected by fixing systems of known type to the non-visible rear face C1 of the bodywork C so that each lamp 5 is centred with respect to apertures A provided in the bodywork portion C.
  • An auxiliary member 7 is mounted on a visible front face C2 of the bodywork portion C and has a flat portion 7a delimited by a peripheral frame 8 of dimensions corresponding to those of the body 2 and to which walls 9 perpendicular to the surface of the flat portion 7a of the auxiliary member are fixed.
  • the flat portion 7a has through-holes F of a diameter less than that of the apertures A of the bodywork C for the passage of the light.
  • the bodywork portion C may have a single aperture of a shape and dimensions substantially corresponding to those of the portion 7a of the auxiliary member 7.
  • a trough-like transparent glass 11 of plastics material is mounted in the frame 8 of the auxiliary member 7 and its inner wall 11a has, for each opening defined by the flat portion 7a and the walls 9 of the auxiliary member 7, a central zone 12 comprising refracting prisms 13 and a peripheral zone 14 comprising totally-reflecting prisms 15.
  • the surface portions of the refracting prisms 13 which are not perpendicular to the general plane of the transparent glass 11 are shaped so as to define a series of diffusing lenses 16 (see Figure 3).
  • flat zones 17 are interposed between the totally-reflecting prisms 15 and are shaped so as to define a plurality of diffusing lenses 18 (see Figure 4).
  • the auxiliary member 7 is mounted on the bodywork before painting, so that the flat portion 7a and walls 9 of the member itself assume the same colour as the bodywork C.
  • the light coming from the lamp is coloured by the filter 6 and then concentrated by the prismatic surface of the glass 11 into a light beam having the desired characteristics.
  • the presence of the coloured filter 6 enables a colourless transparent glass 11 to be used. In some cases (reversing lights or side lights) the coloured filter 6 is not present.
  • the coloured filter 6 is not visible from the exterior since the light (for example sunlight) which enters the headlamp is reflected by the surface of the flat portion 7a and by the walls 9 of the auxiliary member 7 and is diffused over the entire surface of the transparent glass 11.
  • the light coming from the interior is diffused by the diffusing lenses 16 and 18 so that, when the lamp is switched off and the headlamp is illuminated from the exterior, the transparent glass, while being colourless, takes on the colour of the bodywork C.
  • the transparent glass 11 must have a rebated profile so as to be as close as possible to the coloured bodywork in that, if it were too far away, the colour of the bodywork would be less visible.
  • the totally-reflecting prisms 15 illuminate the zones 17 with the colour of the filter 6 much more intensely.
  • the transparent glass 11 may be formed in a single colour or so that it includes several zones of different colours in correspondence with various headlamps.
  • the auxiliary member 7 may be formed integrally with the bodywork C and may even be painted in a different colour from that of the rest of the bodywork (for example, two-colour motor car with a horizontal coloured stripe which includes the rear optical systems).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Filters (AREA)
EP89830145A 1988-04-05 1989-04-04 Leuchte und deren optische Einheit für Kraftfahrzeuge Expired - Lifetime EP0336908B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6730188 1988-04-05
IT67301/88A IT1219177B (it) 1988-04-05 1988-04-05 Fanale per autoveicoli e gruppo ottico per autoveicoli includente tale fanale

Publications (3)

Publication Number Publication Date
EP0336908A2 true EP0336908A2 (de) 1989-10-11
EP0336908A3 EP0336908A3 (en) 1990-05-23
EP0336908B1 EP0336908B1 (de) 1994-02-16

Family

ID=11301273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830145A Expired - Lifetime EP0336908B1 (de) 1988-04-05 1989-04-04 Leuchte und deren optische Einheit für Kraftfahrzeuge

Country Status (5)

Country Link
EP (1) EP0336908B1 (de)
BR (1) BR8901675A (de)
DE (1) DE68913062T2 (de)
ES (1) ES2049843T3 (de)
IT (1) IT1219177B (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296548A1 (fr) * 1974-12-30 1976-07-30 Seima Feu de signalisation, notamment pour vehicule automobile
FR2526522A1 (fr) * 1982-05-04 1983-11-10 Marchal Equip Auto Perfectionnements aux feux pour vehicules automobiles
IT1179912B (it) * 1984-04-16 1987-09-16 Fiat Auto Spa Fanale per autoveicoli e gruppo ottico per autoveicoli includente tale fanale

Also Published As

Publication number Publication date
DE68913062T2 (de) 1994-06-01
IT8867301A0 (it) 1988-04-05
IT1219177B (it) 1990-05-03
DE68913062D1 (de) 1994-03-24
EP0336908A3 (en) 1990-05-23
EP0336908B1 (de) 1994-02-16
ES2049843T3 (es) 1994-05-01
BR8901675A (pt) 1989-11-21

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