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
  • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
  • F21S41/39—Attachment thereof
• • 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
• • 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
  • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
  • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening

Definitions

• the invention relates to optical units, possibly of vehicles, providing at least one photometric signaling or lighting function.
• Certain optical units generally intended for equipping vehicles, possibly motor vehicles, comprise at least one optical unit comprising a housing and a lens fixedly attached to a front part of the housing.
• This housing delimits an internal space which houses at least one photon source associated with a reflector and with a mask participating together in at least one photometric signaling or lighting function.
• the reflector is precisely positioned, with good isostaticness, relative to the housing of its optical unit, in three directions perpendicular to each other.
• the reflector is usually secured to the housing by means of screws, which requires the provision of fixing lugs on the housing and / or on the reflector, and therefore complicates and increases costs. of the housing mold and / or of the reflector mold. In addition, this complicates and therefore makes the assembly of the optical unit more expensive.
• the invention aims in particular to improve the situation.
• an optical unit comprising, on the one hand, a housing delimiting an internal space housing at least one photon source associated with a reflector and with a mask participating together in at least one photometric function, and, on the other hand, a glass fixedly attached to a front part of the housing.
• Its mask includes a rear part opposite the glass and comprising a stud (or barrel) provided with a threaded hole cooperating with a screw passing through a corresponding hole defined in a rear wall of the housing, and at least one fin. indexing defined in a chosen direction, and
• the - its reflector includes a rear part interposed between the rear wall of the housing and the rear (corresponding) part of the mask and provided with an opening having a shape homologous to a shape of the stud and crossed by an end part of the latter so that the reflector is indexed in position relative to the following mask this direction chosen while immobilizing it relative to the rear wall of the housing.
• optical unit according to the invention may include other characteristics which can be taken separately or in combination, and in particular:
• - His mask may include two rear parts opposite the glass and respectively comprising two studs provided with indexing fins defined respectively in two directions perpendicular to each other.
• its reflector comprises two rear parts interposed between the rear wall of the housing and respectively the two rear parts of the mask and respectively provided with openings having shapes homologous to the respective shapes of these two studs and crossed respectively by parts of end of the latter so that the reflector is indexed in position relative to the mask respectively in these two directions while immobilizing it relative to the rear wall of the housing;
• each pad can be provided on its periphery, in two opposite places, with two indexing fins defined in the same plane parallel to the chosen direction concerned,
• its reflector may include a rear face oriented towards the rear wall of the housing and provided, near each opening, with at least two protrusions contacting this rear wall of the housing by positioning the reflector relative to the rear wall of the housing according to a another chosen direction, perpendicular to each chosen direction of an indexing fin;
• the rear face of its reflector can be fitted around each opening of four protuberances having orientations differing two by two by 90 °;
• the photometric function can be chosen from a position light function, a daytime light function (or DRL ("Daytime running Light (or Lamp)")), a direction change indicator (or flashing) function, a brake light function, a reversing light function, a high beam function, a low beam function and a fog light function;
• the photon source can comprise at least one light-emitting diode
• the invention also provides a vehicle, possibly of the automotive type, and comprising at least one optical unit of the type presented above.
• FIG. 1 schematically illustrates, in a perspective view from the rear side, part of an exemplary embodiment of an optical unit according to the invention, without the rear part of the housing,
• FIG. 2 schematically illustrates, in a perspective view from the rear side, the optical unit of FIG. 1 with the rear part of the housing,
• FIG. 3 schematically illustrates, in a sectional view in an XZ plane, the optical unit of FIG. 2,
• FIG. 4 schematically illustrates, in a perspective view from the rear side, part of the optical unit of FIG. 1, containing a first stud of the mask partially passing through a first opening of the reflector, and
• FIG. 5 illustrates schematically, in a perspective view from the rear side, a part of the optical unit of Figure 1, containing a second mask stud partially passing through a second opening of the reflector.
• the object of the invention is in particular to propose an optical unit BO ensuring at least one photometric function, and comprising a mask M ensuring in particular the indexing in position of its reflector RP.
• the optical unit BO is intended to equip a motor vehicle. But the invention is not limited to this application. Indeed, the optical unit BO can equip any device, system, installation or building, and in particular any vehicle (land, sea (or river), or air) having to provide at least one photometric lighting or signaling function.
• the optical unit BO is a rear light.
• this rear light can be fitted to part of a tailgate or a rear trunk door or a rear wing of a vehicle.
• the optical unit could also be a front light or a headlight (or headlight).
• the direction X is the longitudinal direction of the vehicle, which is parallel to the lateral sides comprising the side doors
• the direction Y is the transverse direction of the vehicle, which is perpendicular to the lateral sides and to the longitudinal direction X
• the direction Z is the vertical direction of the vehicle, which is perpendicular to the longitudinal X and transverse Y directions.
• FIGS. 1 to 3 There is diagrammatically illustrated in FIGS. 1 to 3 part of an example of an optical unit BO according to the invention (here a rear light of a motor vehicle).
• an optical unit BO comprises, on the one hand, a housing BB delimiting an internal space housing in particular at least one photon source (not shown), a mask M and a reflector RP participating together in the less a photometric function, and, on the other hand, a glass GL fixedly secured to a front part of the housing BB.
• the photometric function provided by the optical unit BO is a position light function (or pilot light or lantern). But it could be another photometric function, such as for example a daytime running light function (or DRL (Daytime running Light (or Lamp) - light signal switched on automatically when the vehicle is put into operation during the day)) , a direction change indicator (or flashing) function, a stop light function, a reversing light function, a high beam function, a dipped beam function, or a fog light function.
• GL glass is fixedly secured (for example by welding
• BB housing (possibly by vibration) or bonding) and tightly to the front part of the BB housing.
• It can be made of transparent plastic (or synthetic) or glass, and can optionally be colored at least in part, for example in red or orange.
• the (each) photon source participating in the aforementioned photometric function can, for example, be installed on an electronic card which is housed in the internal space of the optical block BO.
• This electronic card can, for example, be a printed circuit board of the PCB (“Printed Circuit Board”) type.
• the (each) photon source may include at least one light-emitting diode (or LED).
• the (each) photon source may comprise at least one laser diode or a gas laser or even a lamp (or bulb).
• the reflector RP is responsible for reflecting photons, coming from the (each) photon source, in the direction of part of the lens GL, possibly via at least one optical element, such as for example a lens or a diffuser. It is for example made by molding a plastic material.
• the mask M comprises a front part situated in the vicinity of the lens GL and defining at least partially an exit zone for the photons reflected by the reflector RP. It can also, possibly, participate in a style effect of its optical block BO.
• this mask M includes at least one rear part P1j which is opposite to the glass GL and which comprises a position indexing pad (or barrel) Plj.
• the latter (Plj) is provided with a threaded hole which cooperates with a screw Vj passing through a corresponding hole defined in a rear wall PB of the housing BB (see FIG. 3), and at least one indexing fin Aj which is defined according to a chosen direction (here of the vehicle), such as for example the transverse direction Y or the vertical direction Z.
• the reflector RP also comprises at least one rear part P2j which is interposed between the rear wall PB of the housing BB and the corresponding rear part P1j of the mask M (see FIG. 3) and which is provided with an opening Oj having a shape homologous to the shape of the corresponding plot (or barrel) Plj. As appears better in FIGS.
• this opening Oj is crossed by a free end part of this corresponding stud Plj so that the reflector RP is indexed in position relative to the mask M in the chosen direction (here Z or Y) of each indexing fin Aj of this stud Plj while immobilizing it with respect to the rear wall PB of the housing BB by means of the corresponding screw Vj which is screwed into the threaded hole of this stud Plj (see figures 2 and 3).
• the rear part P2j of the reflector RP which contains this opening Oj, is interposed between the rear wall PB of the housing BB and the rear part P1j of the mask M which contains this stud Plj, and therefore the screwing of the screw Vj (which passes through a hole in the rear wall PB of the housing BB) in the threaded hole of this stud Plj ensures the immobilization of this rear part P2j of the reflector RP relative to the rear wall PB of the housing BB.
• the positioning and the isostaticness of the reflector RP in at least one direction is therefore naturally relative to the housing BB by means of the mask M, without it being necessary to provide dedicated fixing means for the reflector RP on this housing BB .
• the first rear part P1 1 of the mask M comprises a first pad PU provided with at least one indexing fin A1 defined in a first direction (here the vertical direction Z).
• the second rear part P12 of the mask M comprises a second pad PI2 provided with at least one indexing fin A2 defined in a second direction (here the transverse direction Y) which is perpendicular to the first direction (here Z).
• the first rear part P21 of the reflector RP comprises a first opening 01 which has a first shape homologous to the first shape of the first pad PU and which is crossed by the end part of this first pad PU so that the reflector RP is indexed in position relative to the mask M in the first direction (here Z), while immobilizing it relative to the rear wall PB of the housing BB by means of the first screw V1 screwed into the threaded hole of the first PU pad.
• FIGS. 1 the first shape homologous to the first shape of the first pad PU and which is crossed by the end part of this first pad PU so that the reflector RP is indexed in position relative to the mask M in the first direction (here Z), while immobilizing it relative to the rear wall PB of the housing BB by means of the first screw V1 screwed into the threaded hole of the first PU pad.
• the second rear part P22 of the reflector RP comprises a second opening 02 which has a second form homologous to the second form of the second stud PI2 and which is crossed by the end part of this second stud PI2 so that the reflector RP is indexed in position relative to the mask M in the second direction (here Y), while immobilizing it relative to the rear wall PB of the housing BB by means of the second screw V2 screwed into the threaded hole of the second PI2 stud.
• the positioning and the static droop of the reflector RP in the two directions Z and Y take place naturally with respect to the housing BB by means of the mask M, without the need for fixing means. dedicated to the reflector on this BB box.
• each pad Plj can be provided on its periphery, in two opposite locations, with two indexing fins Aj which are defined in the same plane parallel to the chosen direction (here Z or Y).
• the stud Plj is of generally circular cylindrical shape, its two indexing fins Aj are defined respectively at two places on its periphery which are diametrically opposite, and extend radially in opposite directions from this periphery. This option improves the positioning and isostaticness of the reflector RP according to the direction (Z or Y) concerned.
• each pad Plj could be provided on its periphery with only one indexing fin Aj, in one place.
• the reflector RP may include a rear face FR oriented towards the rear wall PB of the housing BB and provided with at least two protuberances PRj near each opening Oj. These protrusions PRj are arranged so as to contact this rear wall PB of the housing BB by positioning the reflector RP relative to the rear wall PB of the housing BB in another (third) chosen direction (here the longitudinal direction X) which is perpendicular to each chosen direction (here Z or Y) of an Aj indexing fin.
• the longitudinal direction X which is perpendicular to each chosen direction (here Z or Y) of an Aj indexing fin.
• the rear face FR of the reflector RP is provided around each opening Oj with four protrusions PRj which have orientations differing two by two by 90 °.
• the rear face FR of the reflector RP could be provided around each opening Oj with less than four protuberances PRj, such as for example two (having orientations differing by 180 °) or else three (having orifices differing two by two by 120 °) .
• the invention offers several advantages, including:

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• 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)
• Investigating Or Analysing Materials By Optical Means (AREA)
• Optical Elements Other Than Lenses (AREA)
• Optical Radar Systems And Details Thereof (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=63312116

Family Applications (1)

Country Status (5)

Citations (6)

• 2018
  • 2018-06-20 FR FR1855425A patent/FR3082919B1/fr not_active Expired - Fee Related
• 2019
  • 2019-05-22 EP EP19737166.9A patent/EP3810986B1/de active Active
  • 2019-05-22 WO PCT/FR2019/051174 patent/WO2019243682A1/fr unknown
  • 2019-05-22 ES ES19737166T patent/ES2940697T3/es active Active
  • 2019-06-19 AR ARP190101695A patent/AR115582A1/es active IP Right Grant

Patent Citations (6)

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