FR2620197A1 - FIRE MASK FOR MOTOR VEHICLES - Google Patents

Abstract

The invention relates to a traffic light for a motor vehicle comprising a transparent intermediate screen, the inner face of which has converging aligned diopters and the outer face of which comprises an opaque mask with passage orifices aligned in correspondence. According to the invention, the intermediate screen 1 comprises on its outer face diopters of divergence 3 in correspondence of converging diopters 2 of the inner face arranged to straighten the light rays received substantially parallel to the original rays, and bands 4 substantially vertical, a front cover screen 6 comprising substantially vertical strips 7 visually cooperating with the strips 4 of the intermediate screen. Application to the automotive industry.

Description

2620 1 9 7

  Masked fire for motor vehicles.

  The invention relates to a lamp for a motor vehicle

  carrying at least one lamp, a reflection or refraction element arranged in correspondence of this lamp for reflecting or refracting light in the form of a lamp

  beam of substantially parallel radii, a screen

  intermediate disposed in front of the lamp and the reflection or refraction element chosen and formed by a plate 0 of transparent material, on the one hand, the inner face is provided with convergent dioptres each aligned on one of the zones transparencies arranged on the outer face of the intermediate screen which, on the other hand, is covered with an opaque mask provided on the same alignment of passage openings of the light brushes concentrated by said diopters, a front cover screen obturator all at the front of said light and provided with a spreading optic and appropriately distributing said elementary brushes to form the lighting beam

  O or expected outdoor signage.

  Such an arrangement, as described in various

  vets, and in particular patent FR-A-2427549, is made in many automobile traffic lights in which the covering screen has an arrangement of diopters of vertical and horizontal diffusion in the general shape of spherical caps (balls) and / or

  cores on its inner surface, (preferably in

  cross-section of parallel cylindrical lenses on each

  O one of the two sides of the overlapping screen

  in the aforementioned patent), dioptres which reinforce the diversity

  elementary brushes of light at the outlet of the mask openings to achieve the required

outdoor lighting beam.

  However, the evolution of the style of motor vehicles, parti-

  particularly with regard to the indicator lights of

  direction directly juxtaposed with light projectors

  rage whose ice is provided with different optical

  rents, leads to products whose external vision in the extinct state will have to be harmonized, that is to say that at least the optical reliefs and the transparency of the projector glass and the fire recovery screen must

  give, off, an appearance of hues and shapes

  similarly continuing to suppress as much as possible the phenomenon called "ghost colored under the effect

  outside shading sunlight.

  Fires according to the arrangement of the kind of patent FR-A-2427549 do not meet the new requirements of

  planned style and security, since the overlay screen

  Such lights are provided with optical reliefs giving

  the appearance of a relatively tight grid

  those of the headlamps giving the illusion of substantially vertical bands which are contiguous

  areas of flat or slightly radiated prisms characterized

  ticks. Also, the formation of elementary brushes

  diverging out of the apertures of the screen mask

  the aforementioned fires, combined with the dispersions of their paths brought by the inevitable tolerances of manufacture, greatly complicates the design of optical reliefs which could be related to optical reliefs

  strips of projectors which are determined by

  directional light beams, and in particular

  of radii substantially parallel to each other.

  The present invention aims to achieve a fire of

  masked type mentioned in the introduction, but capable of

  to satisfy the above-mentioned style requirements.

  For this purpose, the fire according to the invention is characterized by the fact that the intermediate screen of transparent material

  is provided on its inner wall with dioptres

  arranged to focus forward the parallel incident rays which it receives from the selected upstream reflection and / or refraction means of the lamp spokes, on its outer wall a corresponding arrangement of divergence diopters on the one hand positioned in the axis of each of the convergence diopters and capable of enveloping the entire convergent volume of each functional light brush

  focused by the convergence dioptres, and

  especially their elementary rays in a direction substantially parallel to the incident rays of origin, on the other hand located in very slight withdrawal from the surface

  plane and / or radiated from substantially vertical bands

  lant the external relief of the outer wall of the intermediate screen which is itself covered, a layer of

  an opaque material which successively masks in external vision.

  fire extinguished, the chosen coloring element of the

  functional light and determines in the axis of

  of each of the dioptres of convergence and re-

  aforesaid erection of the corresponding openings of passage

  for elementary radii which are substantially parallel

  put by said rectification dioptres, the screen of recou-

  front closing the front of the fire being provided with

  flat and / or radiated optical elements forming substantially vertical juxtaposed strips of external distribution

  of the directional beam of light constituted by the

  of substantially parallel elementary radii trans-

  placed by the dioptres of recovery of the intermediate screen.

  area, respectively at least of the same arrangement -sensitive-

  vertically in relation to the horizontal positioning plane

  zontal fire, and substantially of such width that the

  bands of the external relief of the intermediate screen

  in the extinguished state of the fire, the external vision of the desired pitch and / or depth of the relief of appearance of the optical elements of the covering screen whose lesser actual pitch and / or depth are adjusted by the precision of standard spreading and distribution

  external lighting to be obtained, combination of elements

  including adapting the virtual resulting step to that of the ice of any neighboring lighting device whose optical reliefs consist in particular of juxtaposition strips

  placed substantially vertically such optical projections

tors.

  In a preferred embodiment, the

  light of the opaque material mask of the screen

  intermediate are small grooves

  separating the various bands of optimum

  that regulate the relief of the outer wall of said intermediate screen, and at the bottom of which grooves are made

  substantially off the right angles of

  said bands accentuating the pitch of the aspect

  optics of the overlay screen which is viewed from the outside.

  According to another embodiment, the dioptres of

  intermediate screen assembly made in very light

  removal of the flat and / or radiated surface of the strips of

  optical pect regulating the external relief of said screen, are arranged along a generatrix of this surface other than the generator delimiting the joint ownership of said strips

  directly juxtaposed with each other and of width and

  vertically similar to the optical bands of the front cover, so as to accentuate the virtual depth of

  recovery seen from outside the fire.

  Advantageously, the rectifying diopters of the intermediate screen, made in very slight removal from the flat surface and / or radiated optical appearance bands regulating the

  outer relief of said screen, are arranged according to a general

  of this surface other than the generator defining the joint ownership of said strips directly juxtaposed between

  that of the optical bands of the frontier

  but of different width to either accentuate part

  the resulting virtual step is to accentuate the local part

  virtual depth to simulate lines of separation of various optical

  than those separating the different optical zones from the

  these of a neighboring lighting device such as projector.

  Preferably, the intermediate screen and / or the screen of recou-

  O properly are positioned orthogonally to the horizontal plane

fire positioning.

  According to another characteristic, the intermediate screen and / or the covering screen are inclined on the horizontal plane of positioning of the fire to further obscure the rectification dioptres to the influence of the solar rays radiating from the outside.

  The invention will be well understood on reading the description of

  0 is a schematic perspective view of a portion of a masked fire according to an embodiment of the invention; FIG. 2 is a view from above of the fire portion of FIG. 1; Figure 3 is similar to Figure 2 for a variant; FIG. 4 is a large-scale detail view of a

  detail of an intermediate screen according to a variant of the

vention; and

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  - Figure 5 is similar to Figure 4, for another variant. Reference is first made to FIGS. 1 and 2 which describe a first embodiment of the invention.

  The parallel incident rays I1, 12 reflected or refracted

  These are striking a transparent intermediate screen 1 whose inner wall is provided with converging diopters 2. These radii are focused forward on dioptres of

  divergence 3 that presents the outer wall of the screen 1.

  The diopters of divergence 3 are each coaxial with a convergence diopter 2 and are sized to envelop the entire focused light beam by the corresponding convergence diopter and to straighten this brush, comprised between the elementary radii C1-C2, in a

  beam substantially parallel to the incident rays Ii-I2.

  The diopters of divergence 3 are situated in slight withdrawal relative to substantially vertical strips 4 also provided on the outer wall of the screen 1. This screen 1 is, on its outer wall, covered with a layer of opaque material 5 intended to mask from outside the fire

  the coloring member (not shown) of the beam inci-

  tooth, when the fire is not lit. The opaque material 5

  is interrupted locally in front of dioptres of divergence

  3 to form passage openings for the radii

  elementary elements i1-i2 from these dioptres 3.

  The beams of substantially parallel radii thus formed strike a transparent front cover 6 which forms the front ice of the fire. The inner wall of the screen 6 is provided with substantially vertical juxtaposed strips 7

  formed of flat and / or radiated optical elements

  put on the outside r rays coming from

  elementary cidents i1-i2. The width of the strips 7 is such

  the relief and the depth of the optical elements of the strips 7 are adjusted to obtain the spreading and the distribution

  of the external lighting beam.r and adapt

  suelo to the ice next to another lighting device.

  rage, especially of a projector or lighthouse. In the embodiments shown, the passage openings in the opaque material mask 5 are formed by narrow grooves 8 which accentuate

  the step of the strips of optical elements 7 of the screen of recou-

well 6.

  In the embodiment of Figure 3, the diopters

  of divergence 3 are arranged according to generators of the

  intermediate screen 1 separate generatrices delimiting the bands 4 of the screen 1, these strips 4 being directly

  juxtaposed together with a width and vertical orientation

  substantially identical to those of bands 7 of the

  cover 6. This can be used to accentuate the depth

  0 apparent deur the optics recovery.

  According to the variant of Figure 2, the strips 4 directly juxtaposed with each other and substantially vertical have a

  width different from that of bands 7 on the

  6. It is thus possible to simulate lines of separation

  reinforcing the resemblance to the mirror of an ad-

Underlying.

  In the embodiment of FIG.

  0 mediator 1 is orthogonal to the horizontal positioning plane

  tal H of the fire. The covering screen 6 can also be used

for such an orthogonal position.

  However, when the available space permits, it is advantageous to provide for the intermediate screen 1 (FIG. 5) and / or the covering screen 6 to be inclined on the horizontal plane H for positioning the fire, in order to further hide the divergence dioptres 3 from the

  solar shading S from the outside.

Claims (6)

  1.- Fire for a motor vehicle comprising at least one lamp, a reflection or refraction element arranged in correspondence of this lamp for reflecting or refracting   light in the form of a beam of sensitive rays   parallel screens, an intermediate screen placed in front of   the lamp and the reflection or refraction element chooses   if and formed by a transparent material plate of which   on the one hand, the inner side is provided with dioptres con-   vergents each aligned on one of the transparent zones O arranged on the outer face of the intermediate screen which, on the other hand, is covered with an opaque mask provided on the same alignment of passage holes of the brushes   of light concentrated by the said dioptres, a screen of   front cover closing all at the front of said lamp and provided with a spreading optic and distributing it appropriately   said elementary brushes to form the beam of   expected lighting or external signaling, characterized   by the fact that the intermediate screen (1) of trans-   parent is provided on its inner wall with 0 converging diopters (2) arranged so as to focus towards the front   the parallel incident rays (I1-I2) it receives from the   yen of reflection and / or refraction upstream selected rays   on the outside wall of an arrangement corresponding to   laying diopters of divergence (3) positioned on the axis of each of the convergence diopters (2) and capable of enveloping the entire convergent volume of each functional luminous brush focused by said convergence diopts (2), and straighten their shelves especially   (C1-C2) in a substantially parallel direction   0 on the other hand located in very slight withdrawal of the plane surface and / or radiated from substantially vertical bands (4) regulating the   external relief of the outer wall of the inter screen   medial (1) which is itself covered with a layer of   opaque (5) which successively masks in external vision.   _- _. ## EQU1 ##   functional beam of light, and determines in the alignment axis (x'x) of each of the convergence diopters (2) and rectifying (3) aforesaid corresponding passage apertures for the elementary rays (i1-i2) substantially parallel transmitted by said rectifying dioptres (3), the front cover (6) closing the front of the fire being provided with flat and / or radiated optical elements forming substantially vertical juxtaposed strips (7) distribution (r) ) of the directional beam of light formed by the plurality of substantially parallel elementary rays (ii-i2) transmitted by the diopters   rectification (3) of the intermediate screen (2), respec-   at least the same substantially vertical arrangement with respect to the horizontal positioning plane (H) of the fire, and substantially of such width that the strips (4) of the external relief of the intermediate screen (1) accentuate, in the off state of the fire, the external vision of the desired pitch and / or depth of the appearance relief of the optical elements (7) of the covering screen (6) whose lesser actual pitch and / or depth are set   by the precision of the spreading and the normal distribution   external lighting (r) to be obtained, a combination of elements making it possible in particular to adapt the virtual resulting step to that of the ice of any neighboring lighting device whose optical reliefs consist in particular of substantially vertical juxtaposed strips such optical projectors.   2. Fire according to claim 1, characterized in that the light-passing holes of the opaque material mask (5) of the intermediate screen (1) are constituted by grooves of small width (8) separating them. the various optical appearance strips (4) which regulate the relief of the outer wall of said intermediate screen (1), and at the bottom of which grooves (8) are substantially recessed the rectifying dioptres (3), said strips (4); ) accentuating the step of the aspect relief of the elements 262019?   3. Fire according to one of claims 1 and 2, characterized   in that the rectification dioptres (3) of the screen   intermediary (1) made in very slight withdrawal from the over-   flat face and / or radiated optical appearance strips (4) adjusting the external relief of said screen (1), are arranged   according to a generatrix of this surface other than the general   trice delimiting the joint ownership of the said bands (4) directly   juxtaposed with each other and of width and orientation   substantially identical to those of the optical bands.   (7) of the front cover (6) so as to accentuate the virtual depth of the relief of the optics   covering from the outside of the fire.   4. Fire according to one of claims 1 to 3, characterized   in that the rectification dioptres (3) of the screen   intermediary (1l), made in very slight withdrawal from   flat face and / or radiated optical appearance strips (4) adjusting the external relief of said screen (1), are arranged   according to a generatrix of this surface other than the general   trice delimiting the joint ownership of the said bands (4)   juxtaposed with each other and of vertical orientation substantially identical to that of the optical bands (7) of   front cover (6) but of different width   annuity to either accentuate part the resulting virtual step   to accentuate locally the depth of   to simulate lines of separation of various optical zones of the same appearance as those separating   different optical zones of the ice of a neighbor lighting such as projector.   5. Fire according to one of claims 1 to 4, characterized   in that the intermediate screen (1) and / or the covering screen (6) are positioned orthogonally to the plane   Horizontal (H) fire positioning.   6. Fire according to one of claims 1 to 4, characterized   in that the intermediate screen (1) and / or the covering screen (6) are inclined on the horizontal plane (H) for positioning the fire to further mask the rectification dioptres (3) with the influence of the sunrays from outside (S).