EP4325115A1 - Lampe de vehicule avec un guide de lumiere - Google Patents

Lampe de vehicule avec un guide de lumiere Download PDF

Info

Publication number
EP4325115A1
EP4325115A1 EP22190581.3A EP22190581A EP4325115A1 EP 4325115 A1 EP4325115 A1 EP 4325115A1 EP 22190581 A EP22190581 A EP 22190581A EP 4325115 A1 EP4325115 A1 EP 4325115A1
Authority
EP
European Patent Office
Prior art keywords
light
collimated
automotive
towards
quasi
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.)
Pending
Application number
EP22190581.3A
Other languages
German (de)
English (en)
Inventor
Cristina PORCELLI
Matteo DE ROSA
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.)
Marelli Automotive Lighting Italy SpA
Original Assignee
Marelli Automotive Lighting Italy 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 Marelli Automotive Lighting Italy SpA filed Critical Marelli Automotive Lighting Italy SpA
Priority to EP22190581.3A priority Critical patent/EP4325115A1/fr
Publication of EP4325115A1 publication Critical patent/EP4325115A1/fr
Pending legal-status Critical Current

Links

Images

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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • 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
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • 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
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • 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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors

Definitions

  • the present invention relates to an automotive light.
  • the present invention relates to a headlight or taillight for cars and similar vehicles, i.e. a lighting apparatus adapted to be incorporated into a motor vehicle with the function of signalling the position, the sudden deceleration and/or the turning direction of the vehicle, and/or with the function of lighting the area surrounding the vehicle.
  • a lighting apparatus adapted to be incorporated into a motor vehicle with the function of signalling the position, the sudden deceleration and/or the turning direction of the vehicle, and/or with the function of lighting the area surrounding the vehicle.
  • a headlight or taillight for cars and similar motor vehicles is, conventionally, a lighting device which is placed at the front, rear or side part of the vehicle and has the function of lighting the area around the vehicle and/or the function of signalling the position of the vehicle, the sudden deceleration of the vehicle and/or the turning direction of the vehicle, in accordance with certain photometric approval standards.
  • taillights for cars and similar motor vehicle usually comprises: a rigid and substantially basin-shaped rear body, which is structured so as to be stably recessed into a compartment specially realized in the rear part of the bodywork of the vehicle; a front half-shell which is arranged to close the mouth of the body so as to surface outside of the bodywork of the vehicle, and is generally provided with a plurality of transparent or semi-transparent sectors, optionally differently coloured from one another; and a series of lighting assemblies that are located inside the rear body, each immediately beneath a respective transparent or semi-transparent sector of the front half-shell, so as to be able to selectively backlight the overlying transparent or semi-transparent sector of the front half-shell.
  • each transparent or semi-transparent sector of the front half-shell is moreover uniquely connected to a specific light signal, thus each lighting assembly is specifically structured so as to emit, on command, a light beam that, once come out from the automotive light through the corresponding transparent or semi-transparent sector of the half-shell, meets the photometric approval specifications (colour and light distribution) provided for the corresponding light signal.
  • LEDs are point-type light sources that emit, in Lambertian manner, a light beam with a rather narrow opening angle.
  • the lighting assemblies can use reflector bodies, corrective optics and shielding masks to adapt the light beam emitted by the various LEDs to the photometric and aesthetic needs connected with the automotive use.
  • the reflector bodies, the corrective optics and the shielding masks are interposed between the LEDs and the front half-shell, and are overall structured so that the light beams reaching the inner face of the front half-shell, are able to backlight the corresponding sectors of the front half-shell in a substantially uniform manner, and have, once crossed the front half-shell, a main component of the light beam substantially parallel to a predetermined direction and/or to the optical axis of the taillight, so as to meet the photometric approval specifications.
  • some models of taillights for cars are provided with lighting assemblies that comprise: a reflector body which is placed close to the bottom of the rear body and is provided with a series of concave reflective surfaces with a roughly semi-parabolic profile, each of which is oriented so as to reflect the incident light towards the facing transparent or semi-transparent sector of the front half-shell; and a series of LEDs that are placed on the side of the reflector body and are oriented so as to direct the produced light towards the various reflective surface of the reflector body.
  • the lighting assemblies may also be provided with a transparent body with a plate-like structure, which is interposed between the reflector body and the front half-shell so as to be crossed by the light directed towards the front half-shell, and is provided with a corrective optic shaped so as to deflect and redistribute the light coming from the reflector body.
  • the corrective optic consists of an embossed profile with a complex three-dimensional structure, which is made on the inner or outer face of the plate-like body and is composed of a multitude of refractive prisms suitably shaped so as deflect the incident light in a predetermined manner towards the front half-shell.
  • the isocandela diagram of the taillight also highlights the presence of small additional areas/zones with medium brightness, clearly not expected and not desired, which are usually placed in the peripheral zone of the isocandela diagram.
  • the light beam, on exit from the taillight has secondary/spurious components having a preferential direction that is strongly inclined with respect to the optical axis of the taillight.
  • the secondary/ spurious components of the light beam exiting from the automotive light may alter the perception of the plays of light produced by the taillight, with the lower aesthetic impact that follows.
  • Aim of the present invention is to improve the distribution of the light within the taillight, so as to avoid, or at least reduce, the effects of the secondary/ spurious components of the light beam exiting from the taillight.
  • an automotive light as defined in Claim 1 and preferably, though not necessarily, in any one of the claims depending on it.
  • number 1 denotes as a whole an automotive light, i.e. a lighting apparatus particularly adapted to be firmly fixed on the front or rear part of the bodywork of a motor vehicle, with the function of emitting light signals adapted to signal/indicate the position of the vehicle and/or the sudden deceleration of the vehicle and/or the turning direction of the vehicle during travel and/or with the function of lighting the area surrounding the vehicle.
  • a lighting apparatus particularly adapted to be firmly fixed on the front or rear part of the bodywork of a motor vehicle, with the function of emitting light signals adapted to signal/indicate the position of the vehicle and/or the sudden deceleration of the vehicle and/or the turning direction of the vehicle during travel and/or with the function of lighting the area surrounding the vehicle.
  • the automotive light 1 is adapted to be fixed on the front or rear part of the bodywork of a car, van, truck, motorcycle or other similar motor vehicle, to perform the function of headlight or taillight.
  • automotive light 1 may also be placed on a side flank of the car or other similar motor vehicle.
  • the automotive light 1 is furthermore structured to be stably recessed in the vehicle bodywork (not shown) so as to surface outside of the latter.
  • the automotive light 1 is preferably structured so as to be stably recessed in the rear part of the bodywork of a car or other similar motor vehicle.
  • the automotive light 1 is preferably a taillight for cars and the like.
  • the automotive light 1 may also be structured so as to be simply fixed cantilevered on the front, side or rear part of the vehicle bodywork (not shown).
  • the automotive light 1 in particular comprises: a substantially rigid and preferably made of plastic material, rear body 2 which is substantially basin-shaped, and is structured so as to be firmly fixed to the vehicle bodywork (not shown); and an at least partially transparent and preferably made of plastic material, substantially rigid front half-shell 3 which is arranged to close the mouth of the rear body 2, preferably so as to surface outside of the vehicle bodywork.
  • the front half-shell 3 is preferably fixed to the perimeter edge of the mouth of rear body 2 in a substantially fluid-tight manner.
  • the automotive light 1 moreover comprises one or more electrically-powered lighting assemblies, each of which emits light on command and is placed inside the rear body 2, beneath a corresponding transparent or semi-transparent sector of front half-shell 3, so as to be able to selectively backlight the same transparent or semi-transparent sector of the front half-shell 3, preferably separately and independently from the other lighting assemblies of the automotive light.
  • one or more transparent or semi-transparent sectors of the front half-shell 3 may also be coloured.
  • the front half-shell 3 may also include opaque sectors.
  • At least one of the lighting assemblies of automotive light 1 is preferably structured so as to direct the light produced towards the corresponding and facing transparent or semi-transparent sector of front half-shell 3, with a main component of the light beam substantially parallel to a reference optical axis A, which is preferably locally substantially parallel to the longitudinal axis of the vehicle when the automotive light 1 is correctly mounted/ placed on the bodywork of the vehicle.
  • the rear body 2 is preferably made of an opaque plastic material advantageously via injection moulding, and is preferably structured so as be at least partially recessed into a seat specially made in the rear part of the vehicle bodywork.
  • the rear body 2 may also be structured so as to be at least partially recessed into a seat specially made in the front or side part of the vehicle bodywork (not shown), or so as to be simply fixed cantilevered on the front, side or rear part of the vehicle bodywork.
  • the front half-shell 3 is preferably made of a transparent plastic material, such as polymethylmethacrylate (PMMA) or polycarbonate (PC), advantageously via injection moulding.
  • PMMA polymethylmethacrylate
  • PC polycarbonate
  • the front half-shell 3 is furthermore welded to the rear body 2 along the perimeter edge of the mouth of the latter.
  • the or at least one of the lighting assemblies of automotive light 1, hereinafter denoted by number 4, in turn comprises a collimated or quasi-collimated light source 5, which is structured so as produce and direct, towards the front half-shell 3, at least one light beam f which is collimated or quasi-collimated in a predetermined first direction d 1 and optionally also has a predetermined opening angle ⁇ preferably, though not necessarily, lower than 15°.
  • the light beam f produced by the collimated or quasi-collimated light source 5 is made up (entirely) of light rays r parallel to the direction d 1 and/or of light rays r inclined with respect to the direction d 1 by a maximum angle equal to half the opening angle ⁇ of the light beam.
  • the collimated or quasi-collimated light source 5 emits/can emit also light rays external to said light beam f, hereinafter called spurious light rays r 0 .
  • the collimated or quasi-collimated light source 5 preferably comprises: a substantially rigid and preferably made of plastic material, reflector body 6 which is placed inside the rear body 2, preferably adjacent the bottom thereof, and is provided with at least one concave reflective surface 6a preferably with a substantially semi-parabolic profile, which is oriented so as reflect the incident light towards the facing transparent or semi-transparent sector of the front half-shell 3; and an electrically-powered light emitting device 7, preferably with a plate-like structure, which emits light on command and is arranged inside the rear body 2 by the side of the reflector body 6 and advantageously also adjacent the bottom of rear body 2, so as to direct the light produced towards the concave reflective surface 6a of reflector body 6.
  • said at least one concave reflective surface 6a of reflector body 6 is preferably shaped so as to reflect, towards the front half-shell 2, the light coming from the light emitting device 7, while forming a light beam f that is collimated or quasi-collimated in direction d 1 .
  • the collimated or quasi-collimated light source 5 is preferably structured so as produce and direct, towards the front half-shell 3, a plurality of light beams f separated and distinct from one another, each of which is directed towards a corresponding portion of the front half-shell 3 and is collimated or quasi-collimated in a corresponding predetermined direction d 1 .
  • the reflector body 6 is preferably provided with a plurality of concave reflective surfaces 6a advantageously arranged side by side to one another, each of which is preferably shaped so as to reflect the incident light towards the front half-shell 2, while forming a respective light beam f collimated or quasi-collimated in a corresponding predetermined direction d 1 .
  • the light emitting device 7 is preferably structured so as direct the produced light towards the various concave reflective surfaces 6a of reflector body 6.
  • the or each light beam f is quasi-collimated in the relative direction d 1 and has an opening angle ⁇ advantageously equal to about 6°.
  • the light beam f is basically made up of light rays r parallel to direction d 1 and of light rays r inclined with respect to direction d 1 by a maximum angle equal to about ⁇ 3°.
  • the light emitting device 7 in turn includes one or more LEDs (acronym for Light Emitting Diode), which are placed by the side of reflector body 6, preferably adjacent the bottom of rear body 2, and are oriented so as to direct the produced light towards the concave reflective surface(s) 6a of reflector body 6.
  • LEDs ascronym for Light Emitting Diode
  • the light emitting device 7 preferably comprises: at least one printed circuit board 8, which is arranged skimmed over or in abutment onto the reflector body 6, by the side of the concave reflective surface(s) 6a; and a series of LEDs 9 that are arranged on the printed circuit board 8 so as to directly face the concave reflective surface(s) 6a of reflector body 6.
  • the printed circuit board 8 moreover hosts the electronics that is adapted to power and/or drive the LED(s) 9.
  • the LEDs 9 are furthermore structured so as emit a light beam (i.e. the light cone in which at least 50% of the light energy produced/emitted by the LED is conventionally concentrated) with an opening angle advantageously lower than or equal to 60°, and are preferably oriented so that each LED 9 directs its own light beam substantially only towards the corresponding and facing concave reflective surface 6a of reflector body 6.
  • a light beam i.e. the light cone in which at least 50% of the light energy produced/emitted by the LED is conventionally concentrated
  • an opening angle advantageously lower than or equal to 60°
  • the or each concave reflective surface 6a of reflector body 6, in turn, preferably has a substantially semi-parabolic profile with a complex three-dimensional structure, so as to be able to reflect the light rays coming from the LED or LEDs 9 towards the front half-shell 3, forming the light beam f.
  • the lighting assembly 4 also comprises a plate-like corrective optic, which is interposed between the collimated or quasi-collimated light source 5 and the front half-shell 3, preferably spaced from both, so as to be crossed by the light beam f directed towards the front half-shell 3, and is structured so as deflect the light beam f in a predetermined second direction d 2 , suitably inclined with respect to direction d 1 .
  • the lighting assembly 4 is additionally provided with a substantially rigid plate-like body 10, at least partially transparent and preferably made of plastic material, which is interposed between the collimated or quasi-collimated light source 5 and the front half-shell 3, preferably spaced from both, so as to be crossed by the light beam f directed towards the front half-shell 3, and is provided with a corrective optics that is adapted to deflect the light beam f in a predetermined second direction d 2 , suitably inclined with respect to direction d 1 .
  • the plate-like body 10 is preferably interposed between the reflector body 6 and the front half-shell 3.
  • the plate-like body 10 moreover has a higher refractive index than that of the air, and its corrective optic is shaped so as deflect the light beam f in a second direction d 2 , which is inclined with respect to the direction d 1 by a predetermined angle ⁇ preferably ranging between 0° and 50° and advantageously even greater than 5°.
  • the deflection angle ⁇ preferably depends on the transparent material which the lenticular body 10 is made of, or rather it depends on its refractive index.
  • the direction d 2 is moreover substantially parallel to the optical axis A of the automotive light.
  • the plate-like body 10 is preferably made entirely of transparent polycarbonate (PC) advantageously by injection moulding, but may also be made of polymethylmethacrylate (PMMA) or other similar plastic materials.
  • PC transparent polycarbonate
  • PMMA polymethylmethacrylate
  • the corrective optics of plate-like body 10 is moreover structured so as to reflect at least a part of the light rays that reach the inner face of plate-like body 10 and do not belong to the collimated or quasi-collimated light beam f in the direction d 1 , i.e. at least a part of the spurious light rays ro, again towards the rear body 2 and/or towards the collimated or quasi-collimated light source 5.
  • the corrective optics of plate-like body 10 prevent at least a part of the spurious light rays r 0 from reaching the front half-shell 3.
  • the plate-like body 10 is provided with a rear or inner face 10i turned towards the collimated or quasi-collimated light source 5, or rather towards the reflector body 6, and a front or outer face 10e turned towards the front half-shell 3.
  • rear/inner face 10i and the front/outer face 10e of plate-like body 10 have respective embossed portions with a complex three-dimensional structure, which contribute in forming the corrective optics of the plate-like body 10.
  • the rear/inner face 10i of plate-like body 10 has, at the corrective optic, at least a first embossed portion with a complex three-dimensional structure, which forms/includes a plurality of first protruding refractive prisms 11, each of which is shaped so as to deflect/direct, depending on the angle of incidence, the incident light towards the front/outer face 10e of plate-like body 10, or towards the collimated or quasi-collimated light source 5 and/or the rear body 2.
  • the front or outer face 10e of plate-like body 10 has at least a second embossed portion with a complex three-dimensional structure, complementary to the first embossed portion, which is aligned with the first embossed portion and forms/includes a plurality of second protruding refractive prisms 12, each of which is shaped so as deflect the light rays coming from the rear/inner face 10i, or rather from the refractive prisms 11, alternately towards the front half-shell 3 or again towards the rear/inner face 10i of plate-like body 10, and therefore towards the collimated or quasi-collimated light source 5 and/or the rear body 2, depending on the direction of the incident light ray.
  • the refractive prisms 11 present on the rear/inner face 10i of plate-like body 10 are provided with a main light-entry surface 11a preferably slightly convex, and with at least one, preferably substantially flat, secondary light-entry surface 11b that is contiguous and inclined with respect to the main refractive surface 11a.
  • Each main light-entry surface 11a therefore, is preferably interposed between two secondary light-entry surfaces 11b.
  • Each light-exit surface 12a therefore, is preferably interposed between two reflective surfaces 12b.
  • the main light-entry surface 11a of refractive prisms 11 faces the collimated or quasi-collimated light source 5, so as to be struck by the light rays r belonging to the light beam f with an angle of incidence smaller than the limit angle.
  • the light rays r of the light beam f can freely penetrate within the corrective optics of plate-like body 10.
  • the main light-entry surface 11a of the refractive prisms 11 is preferably substantially perpendicular to the direction d 1 .
  • the main light-entry surface 11a of the refractive prisms 11 is shaped so as deflect, or rather refract, the light rays r of light beam f towards the light-exit surface 12a of at least one corresponding refractive prism 12 present on the front/outer face 10e of plate-like body 10, with an angle of incidence lower than the limit angle, so that the light rays r can freely exit the plate-like body 10.
  • the light-exit surfaces 12a of the refractive prisms 12 are moreover shaped so that the light rays r exiting from the front/outer face 10e of plate-like body 10 are additionally collimated or quasi-collimated in a direction substantially parallel to the direction d 2 .
  • the main light-entry surface 11a of the refractive prisms 11 is preferably also shaped so as to deflect at least a part of the incident spurious light rays r 0 towards the reflective surface 12b of at least one corresponding refractive prism 12 present on the front/outer face 10e of plate-like body 10, with an angle of incidence greater than or equal to the limit angle, so that said spurious light rays r 0 are reflected towards the rear/inner face 10i of plate-like body 10.
  • the secondary light-entry surface(s) 11b of the refractive prisms 11, on the other hand, are placed downstream and behind the main light-entry surfaces 11a with reference to the direction d 1 , so as to be covered and shaded by the same main light-entry surfaces 11a and thus not being reachable by the light rays r of light beam f.
  • the secondary light-entry surface(s) 11b of the refractive prisms 11 are preferably oriented so as to be locally substantially parallel to the direction d 1 , so as not to be reachable by the light rays r belonging to the light beam f.
  • the secondary light-entry surface(s) 11b of the various refractive prisms 11 are preferably substantially parallel to the generatrix line of the light cone formed by the light beam f collimated or quasi-collimated in direction d 1 .
  • each refractive prism 11 are preferably inclined with respect to the direction d 1 by an angle ⁇ substantially equal to half the opening angle ⁇ of the light beam f.
  • tilt angle ⁇ may also be greater than half the opening angle ⁇ of the light beam f.
  • the secondary light-entry surface(s) 11b of each refractive prism 11 are therefore arranged in undercut with respect to the main light-entry surface 11a of the same prism, so as to not be struck by the light rays r belonging to the light beam f.
  • the secondary light-entry surface(s) 11b of each refractive prism 11 are furthermore shaped so as to deflect the incident spurious light rays r 0 towards the reflective surface 12b of at least one corresponding refractor prism 12 present on the front/outer face 10e of plate-like body 10, with an angle of incidence greater than or equal to the limit angle, such that the spurious light rays r 0 are reflected back toward the rear/inner face 10i of the plate-like body 10.
  • the automotive light 1 finally also comprises an opaque shielding mask 13, substantially rigid and preferably also with a plate-like structure, which is arranged immediately beneath the front half-shell 3, i.e. between the plate-like body 10 and the front half-shell 3, so as conceal from view the rest of the components of the automotive light, including the lighting assembly 4, and is provided with one or more limited light-passage areas 13a of predetermined shape, each of which allows the light coming from the corrective optics of the plate-like body 10 to freely reach the front half-shell 3.
  • an opaque shielding mask 13 substantially rigid and preferably also with a plate-like structure, which is arranged immediately beneath the front half-shell 3, i.e. between the plate-like body 10 and the front half-shell 3, so as conceal from view the rest of the components of the automotive light, including the lighting assembly 4, and is provided with one or more limited light-passage areas 13a of predetermined shape, each of which allows the light coming from the corrective optics of the plate-like body 10 to freely reach the front half-shell 3.
  • the light-passage area(s) 13a of the opaque shielding mask 13 furthermore consist of pass-through openings with predetermined shape.
  • the opaque shielding mask 13 is preferably substantially complementary in shape to that of the mouth of rear body 2, and is preferably made of opaque plastic material advantageously via injection moulding.
  • the limited light-passage area(s) of the opaque shielding mask 13 may also consist of sectors of the mask made of transparent or semi-transparent plastic material, possibly even coloured.
  • lighting assembly 4 will be described with reference to a single collimated or quasi-collimated light beam f, i.e. with reference to a single concave reflective surface 6a of reflector body 6.
  • the light rays r of light beam f freely enter into the plate-like body 10 undergoing, at the main light-entry surfaces 11a of the refractive prisms 11, a first deflection/refraction that directs them towards the light-exit surface(s) 12a of the refractive prisms 12 present on the front/outer face 10e of the plate-like body 10.
  • the light rays r of light beam f then continue inside the plate-like body 10 up to reach the light-exit surfaces 12a of the refractive prisms 12 present on the front/outer face 10e, from where they come out from the plate-like body 10 undergoing a second deflection/refraction that preferably arranges them more or less parallel to the direction d 2 .
  • the light rays r 0 that are not collimated or quasi-collimated in the direction d 1 can theoretically reach any point of the rear/inner face 10i of the plate-like body 10, including the main light-entry surfaces 11a and the secondary light-entry surfaces 11b of the refractive prisms 11.
  • the spurious light rays r 0 penetrate inside the plate-like body 10 and undergo, at the primary light-entry surfaces 11a of the refractive prisms 11, a first deflection/ refraction that directs them towards the reflective surfaces 12b of the refractive prisms 12 present on the front/outer face 10e of plate-like body 10.
  • the spurious light rays r 0 continue up to reach the reflective surfaces 12b of the refractive prisms 12 present on the front/outer face 10e of plate-like body 10, where, having an angle of incidence greater than the limit angle, they are reflected towards the rear/inner face 10i of plate-like body 10.
  • the spurious light rays r 0 may advantageously come out from the plate-like body 10 directed towards the rear body 2 and/or towards the collimated or quasi-collimated light source 5.
  • the spurious light rays r 0 freely penetrate inside the plate-like body 10 and undergo, at the secondary light-entry surfaces 11b of the refractive prisms 11, a first deflection/refraction that advantageously directs them towards the reflective surfaces 12b of the refractive prisms 12 present on the front/outer face 10e of plate-like body 10.
  • the spurious light rays r 0 may eventually continue up to reach the reflective surfaces 12b of the refractive prisms 12 present on the front/outer face 10e of plate-like body 10, where, having an angle of incidence greater than the limit angle, they are reflected towards the rear/inner face 10i of plate-like body 10.
  • the spurious light rays r 0 may advantageously come out from the plate-like body 10 directed towards the rear body 2 and/or towards the collimated or quasi-collimated light source 5.
  • the particular shape of the refractive prisms 11, 12 present on the inner 10i and outer 10e faces of the plate-like body 10 prevents most of the spurious light rays r 0 from reaching the front half-shell 3, thus minimizing the intensity of the light coming out from the automotive light with a direction strongly inclined with respect to the optical axis A.
  • the particular shape of the corrective optics of plate-like body 10 prevents the front half-shell 3 from unexpectedly "turning on” when the observer moves towards the outer side of the vehicle body.
  • the particular shape of the refractive prisms 11, 12 present on the inner 10i and outer 10e faces of plate-like body 10 increases the optical efficiency of the automotive light 1, transferring to the high brightness area located at the optical axis A of the automotive light, a greater percentage of the overall light energy emitted by the collimated or quasi-collimated light source 5.
  • the collimated or quasi-collimated light source 5 may comprise: an electrically-powered light emitting device which emits light on command and is arranged inside the rear body 2, so as to direct the produced light towards the corresponding transparent or semi-transparent sector of the front half-shell 3; and a Fresnel lens, which is interposed between the light emitting device and the plate-like body 10, preferably spaced from both, so as to be crossed by and to collimate or quasicollimate the light beam directed towards the front half-shell 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP22190581.3A 2022-08-16 2022-08-16 Lampe de vehicule avec un guide de lumiere Pending EP4325115A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22190581.3A EP4325115A1 (fr) 2022-08-16 2022-08-16 Lampe de vehicule avec un guide de lumiere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22190581.3A EP4325115A1 (fr) 2022-08-16 2022-08-16 Lampe de vehicule avec un guide de lumiere

Publications (1)

Publication Number Publication Date
EP4325115A1 true EP4325115A1 (fr) 2024-02-21

Family

ID=83594336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22190581.3A Pending EP4325115A1 (fr) 2022-08-16 2022-08-16 Lampe de vehicule avec un guide de lumiere

Country Status (1)

Country Link
EP (1) EP4325115A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046748A1 (de) * 2008-09-11 2010-03-25 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Kraftfahrzeug
DE102010054923A1 (de) * 2010-12-17 2012-06-21 Volkswagen Ag Leuchteinrichtung für ein Fahrzeug für zwei Lichtfunktionen
JP2014022212A (ja) * 2012-07-19 2014-02-03 Koito Mfg Co Ltd 車両用灯具
WO2015075668A1 (fr) * 2013-11-20 2015-05-28 Automotive Lighting Italia S.P.A. Phare de véhicule automobile
CN103994387B (zh) * 2014-05-29 2017-01-04 长城汽车股份有限公司 车灯和具有它的汽车
WO2017168387A1 (fr) * 2016-03-31 2017-10-05 Automotive Lighting Italia S.P.A. Unité d'éclairage pour automobile à plaque de guidage de lumière
WO2021205084A1 (fr) * 2020-04-09 2021-10-14 Psa Automobiles Sa Dispositif optique pour véhicule automobile présentant un aspect de guide plat de lumière

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046748A1 (de) * 2008-09-11 2010-03-25 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Kraftfahrzeug
DE102010054923A1 (de) * 2010-12-17 2012-06-21 Volkswagen Ag Leuchteinrichtung für ein Fahrzeug für zwei Lichtfunktionen
JP2014022212A (ja) * 2012-07-19 2014-02-03 Koito Mfg Co Ltd 車両用灯具
WO2015075668A1 (fr) * 2013-11-20 2015-05-28 Automotive Lighting Italia S.P.A. Phare de véhicule automobile
CN103994387B (zh) * 2014-05-29 2017-01-04 长城汽车股份有限公司 车灯和具有它的汽车
WO2017168387A1 (fr) * 2016-03-31 2017-10-05 Automotive Lighting Italia S.P.A. Unité d'éclairage pour automobile à plaque de guidage de lumière
WO2021205084A1 (fr) * 2020-04-09 2021-10-14 Psa Automobiles Sa Dispositif optique pour véhicule automobile présentant un aspect de guide plat de lumière

Similar Documents

Publication Publication Date Title
US9574734B2 (en) Lightguide module
US10184635B2 (en) Light device
US8480266B2 (en) Vehicle light unit and vehicle light
EP2693105B1 (fr) Dispositif d'éclairage de véhicule
US20200158309A1 (en) Lamp and vehicle having same
JP4735852B2 (ja) 車両用前照灯
JP7081977B2 (ja) 車両用灯具
US10371347B2 (en) Vehicle light comprising a portion of light emission with opalescent effect
EP3263980B1 (fr) Phare de véhicule comprenant une partie d'émission de lumière avec effet opalescent
US7513665B2 (en) Headlamp module and headlamp assembly with internally reflecting translucent member
EP3330601B1 (fr) Feu de véhicule
JP2021002449A (ja) 車両用灯具
EP4325115A1 (fr) Lampe de vehicule avec un guide de lumiere
WO2022172783A1 (fr) Lampe de véhicule
US11498480B2 (en) Illuminating device for vehicle ceiling lamp
JP7265437B2 (ja) 車両用灯具
JP2021150210A (ja) 車両用灯具
EP4023935A1 (fr) Phare automobile
JP5363179B2 (ja) 車両用灯具
JP7390249B2 (ja) 車両用灯具
EP4296564A1 (fr) Feu automobile
EP4206523A1 (fr) Phare automobile
EP3838564B1 (fr) Fixation d'éclairage de véhicule
TWI720621B (zh) 光線投射裝置及其具有環形發光效果的透鏡結構
JP2022069185A (ja) 車両用灯具

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR