• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a light-signaling module (6) intended to be arranged behind a transparent or translucent pane or glass, said module comprising a location for at least one light source (10) able to emit light rays, and an optical system (14, 18) adapted to deflect the light rays emitted by the light source (s) (10) so as to form a light beam along an optical axis (12) of the module, said optical system extending in one direction main beam (13) transverse to the optical axis (12) and comprising an exit face (182) of spokes. The output face (182) of the optical system (14, 18) has a sagittal section a convex or concave curved general profile.
    公开号:FR3045781A1
    申请号:FR1562864
    申请日:2015-12-18
    公开日:2017-06-23
    发明作者:Alexandre Franc；Florestan Debert；Dirkie Sacchet；Cindy Leclercq
    申请人:Valeo Vision Belgique SA；
    IPC主号:
    专利说明:

    The invention relates to the field of lighting and light signaling, in particular for a motor vehicle. More particularly, the invention relates to a light module intended to be disposed in a luminous signaling device housing, such as a motor vehicle rear lamp. More particularly, the invention relates to a light module for a raised brake light especially intended to be disposed behind a window of rear window of a motor vehicle.
    The published patent document FR 2 614 969 A1 discloses a signaling light with an extended illuminating surface, such as for example a rear light for a motor vehicle rear window, commonly called a third stop light. It comprises a light source of the incandescent bulb type, a first transparent and curved optical element, surrounding the light source and a second transparent and generally flat optical element. The first optical element comprises an input face, adapted to receive the rays of the light source, and an output face having Fresnel facets or steps capable of homogeneously distributing the light of the light source along the second element. optical. The latter is generally plane and includes an input rear face, also with Fresnel rungs configured to deflect incident light rays along the optical axis of the traffic light. The second optical element is in fact a collimator. The traffic light of this teaching is interesting in that it tries, with simple means, to distribute homogeneously the light along the main direction of the fire which is transverse to the optical axis. The collimation of the rays in the vertical direction is provided by striations extending generally horizontally on the input faces of the first and / or second optical elements. However, these streaks are the seat of light losses as well as inhomogeneities in the light beam.
    The published patent document FR 2 794 218 A1 discloses a signaling light, also with extended illuminated surface, of the type of brake light for rear window of a motor vehicle. The fire comprises a light source of the incandescent bulb type, a collimator and a plano-convex lens adapted to converge the parallel light rays coming out of the collimator towards a focal segment. To do this, the front face of the lens, generally convex, has a series of gadroons or curved surfaces extending vertically. These surfaces make it possible to converge the rays along a focal segment which is generally perpendicular to the gadroon direction, and therefore generally horizontal. The focal segment is located at the inner face of the glass on which the fire is intended to be mounted. The area of the window receiving the fire can therefore be opacified, with the exception, however, of a slot corresponding to the focal segment. The interior of the fire can thus be hidden from outside the vehicle by the wall or opacifying layer disposed on the window. In addition, the fire is made almost invisible, when off, from outside the vehicle. This design, although advantageous, however, has some disadvantages, including the fact that it imposes the presence of a wall or opacifying layer and that, therefore, the illuminated surface is imperatively thin. The invention aims to overcome at least one disadvantage of the state of the art, including the state of the art mentioned above. More particularly, the object of the invention is to propose a luminous device such as a raised stop signaling light which has a satisfactory optical efficiency, produces a beam of satisfactory homogeneity and confers more freedom with respect to its off-state appearance and lighted when placed behind glass or transparent or translucent ice, if necessary colored. In this regard, the subject of the invention is a light module intended to be arranged behind a transparent or translucent pane or glass, in particular a window of a rear window of a motor vehicle, said module comprising: a location for at least one suitable light source to emit light rays; an optical system capable of deflecting the light rays emitted by the light source (s) so as to form a light beam along an optical axis of the module, said optical system extending in a main direction transverse to the optical axis and comprising a face ray output; remarkable in that the output face of the optical system has in sagittal section a convex or concave curved general profile.
    According to an advantageous embodiment of the invention, the output face of the optical system is free of optical patterns.
    According to an advantageous embodiment of the invention, the output face of the optical system is smooth.
    According to an advantageous embodiment of the invention, the output face of the optical system is grained and preferably has a roughness Ra less than 20 micrometers.
    According to an advantageous embodiment of the invention, the exit face of the optical system comprises smooth zones and grained zones.
    According to an advantageous embodiment of the invention, the curved profile of the output face of the optical system is in a plane parallel to the optical axis and to the main direction of said system and / or in a plane parallel to the optical axis and perpendicular to said main direction.
    According to an advantageous embodiment of the invention, the optical system comprises at least one transparent or translucent optical element with an input face of the light and an output face, at least one of said faces comprising Fresnel steps.
    According to an advantageous embodiment of the invention, the output face of the or one of the optical elements forms the output face of the optical system.
    According to an advantageous embodiment of the invention, the optical system comprises a first transparent or translucent optical element with an input face adapted to receive, preferably directly, the rays emitted by the light source or sources, said input face comprising Fresnel steps.
    According to an advantageous embodiment of the invention, the Fresnel steps on the input face of the first optical element have curved and / or annular profiles, said optical element comprising an exit face with rectilinear Fresnel steps.
    According to an advantageous embodiment of the invention, the Fresnel steps on the output face of the first optical element are perpendicular to the main direction of the optical system.
    According to an advantageous embodiment of the invention, the optical system comprises a second transparent or translucent optical element with an input face capable of receiving the rays coming from the first optical element, and an output face forming the output face of the optical system. .
    According to an advantageous embodiment of the invention, the input face of the second optical element comprises rectilinear Fresnel steps.
    According to an advantageous embodiment of the invention, the Fresnel steps on the input face of the second optical element are perpendicular to the main direction of the optical system.
    According to an advantageous embodiment of the invention, the second optical element comprises two sub-elements separated by an air knife, the first sub-element bearing the entry face and the second sub-element carrying the exit face forming the The invention also relates to a light device of a motor vehicle, comprising a housing and a light module, remarkable in that the light module is in accordance with the invention.
    The measurements of the invention are interesting in that they make it possible to produce a generally thin and horizontally spreading signaling light beam, such as in particular for a third stop light or raised brake light, which is devoid of moiré or other inhomogeneities. In addition, the convex or concave shape of the exit face of the module allows it to be generally smooth and, therefore, to have a uniform and discreet off aspect. More particularly, with respect to the luminous light of the document FR 2 614 969 A1 mentioned above in the part relating to the prior art, having a concave or convex exit face makes it possible to ensure greater dispersion and homogeneity of the beam. signaling. The concavity or convexity of the exit face participates in the deflection according to the vertical of the rays and thus makes it possible to discharge Fresnel steps. These echelons cause light losses and are sources of inhomogeneities. Compared with the luminous light of document FR 2 794 218 A1 also mentioned above in the part relating to the prior art, having a concave or convex exit face makes it possible to avoid moiré formation due to gadroons. In addition, the absence of gadroons or pads on the exit face gives it a uniform and discreet off appearance, which provides more freedom of dimensioning, especially with regard to the height of the light device and also its positioning relative to the rear window glass. Indeed, in the teaching of FR 2 794 218 A1, the module is remote from the glass and it has an opacifying layer with a thin horizontal slot. Other features and advantages of the present invention will be better understood with the aid of the description and the drawings, among which: FIG. 1 is a rear view of a motor vehicle equipped with a raised stop lamp in accordance with the invention; ; - Figure 2 is a sectional view ll-ll of the fire of Figure 1, according to the invention; - Figure 3 is a sectional view III-III of the fire of Figure 1, according to the invention.
    In the description which follows, the notions of verticality and horizontality are expressed when the light device is oriented in a mounting position on the vehicle. The orientation of the light device is also clearly defined in the various figures.
    Figure 1 is a rear view of a motor vehicle 2. In a conventional and known manner, the vehicle comprises a rear window 4, the latter can be fixed on the body or be on a rear door such as a tailgate back. The vehicle 2 comprises a signal light 6, disposed at the top of the rear window 4, more precisely behind said bezel. This is a stop light, commonly called "third brake light" or raised brake light, with reference to two conventional brake lights arranged lower left and right. The "third brake light" or raised brake light is also designated CHMSL, acronym for the English expression "Center High-Mounted Stop Light". Such a raised stop light can also be installed at the bottom of the rear window, on the rear shelf or mounted in the body, above the rear window or at the top of the trunk trunk. When it is intended to be placed behind the rear window, the raised brake light comprises a housing whose opening is closed by the rear window, whereas in the case where it is integrated into the bodywork, it comprises a housing closed by transparent or translucent ice, if necessary colored in red.
    FIG. 2 is a partial cross-sectional view, ie longitudinal (with respect to the vehicle) and horizontal view along line II-II of the light device, or light, 6 of FIG. 1. FIG. 3 is a sectional view sagittal, that is to say longitudinal (with respect to the vehicle) and vertical according to III-III of the fire 6 of FIG.
    The signal light 6 extends along a main direction 13 which corresponds to the horizontal when it is in the mounting position on the vehicle. This main direction 13 also corresponds to the horizontal in FIG. 2. The light comprises a support 8 of one or more light sources 10. It may be a light source (s) of the electroluminescence diode type (FIG. LED) or the incandescent type. In the case of light source (s) of the LED type, the support 8 may be a printed circuit board or PCB (acronym for "Printed Circuit Board"). In the case where several light sources are present, they can be arranged side by side or even distributed in the main direction of the fire. The light source or sources are configured to illuminate in a main direction parallel to the optical axis 12 of the signaling light 6.
    The traffic light 6 also comprises an optical system consisting essentially of a first optical element 14 and a second optical element 18. The first optical element consists of a transparent or translucent material, similar to a lens, with an input face 141 and an exit face 142. In this case, the first optical element 14 is generally curved over a sector between 90 ° and 180 °, so as to collect a major part of the light emitted by the light source 10. The input face 141 may be generally smooth or, as can be seen in FIG. 3, comprise so-called Fresnel rungs configured to deflect the rays coming from the light source (s) essentially vertically. The output face 142 advantageously includes so-called Fresnel streaks or rungs, as can be seen in FIG. 2, so as to control the horizontal spreading of the light rays. A cover 16 may be provided around the first optical element 14.
    The second optical element 18 is arranged to receive the light rays deflected by the first optical element 14. Like the first optical element, the second optical element 18 consists of a transparent or translucent material, similar to a lens, with an input face 181 and an output face 182 The second optical element is advantageously generally plane, extending in the main direction of the light 6. The input face 181 comprises so-called Fresnel streaks or rungs so as to it is possible to deviate essentially radially the rays coming from the first optical element 14. These streaks or rungs consequently extend essentially vertically. They may, however, have a certain curvature centered on the optical axis 12.
    According to a variant not shown, the second optical element 18 comprises two sub-elements separated by an air space, the first sub-element carrying the entry face 181 and the second sub-element carrying the exit face 182 forming the output face of the optical system 14, 18. This advantageously improves the aesthetics of the module when off, in that the Fresnel patterns carried by the input face 181 are less easily visible through the exit face182 and through the glass or transparent ice.
    The exit face 182 of the second optical element 18 is generally concave. More precisely, the profile of its section following a sagittal or vertical longitudinal plane (FIG. 3) is generally curved and concave. The vertical profile in question has a simple concavity. It can correspond to an arc of a circle or a more complex function. Its average radius can be between 10 and 50 mm. The shape of this profile advantageously extends over more than 50%, preferably over more than 80% of the length of the exit face 182 in question. However, it is understood that the profile in question can evolve along the main axis of the light. The section of the outlet face 182 in a horizontal transverse or longitudinal plane (that is to say in the section II-II of FIG. 1) may also have a curved and concave profile. In this case, this horizontal profile then also has a simple concavity with a mean radius of curvature greater than that of the vertical profile. This radius can be between 7 and 12 meters.
    As can be seen in FIG. 3, the rays issuing from the first optical element 14 and entering the second optical element 18 are essentially in horizontal planes. They thus propagate essentially in horizontal planes in the thickness of the transparent or translucent material of the second optical element 18. The concave exit surface 182 has the effect of dispersing the rays vertically and thus of diffusing the light rays. This effect is particularly interesting when the light has a reduced height (according to the vertical).
    Referring to the above discussion that the horizontal profile of the exit face can also be concave, such a concave profile has an effect similar to that of the vertical profile, namely to spread the light rays horizontally.
    Alternatively to what has just been described, the sagittal or vertical profile of the exit face of the second optical element may be convex. In this case, the effect will be to converge the rays towards an area in front and near the traffic light. The spokes will then diverge vertically, similar to the concave profile traffic light. The convex profile may be an arc of a circle or a more complex function. Its average radius can be between 10 and 50mm. The convex shape of the vertical profile advantageously extends over more than 50%, preferentially over more than 80% of the length of the exit face in question. However, it is understood that the profile in question can evolve along the main axis of the light. The exit face section in a horizontal transverse or longitudinal plane (i.e. in section II-II of FIG. 1) may also have a curved and convex profile. In this case, this horizontal profile then also has a simple convexity with a mean radius of curvature greater than that of the vertical profile. This radius can be between 7 and 12 meters.
    In general, the exit face 182 of the second optical element 18 may be grained over its entire surface or in certain areas only, for example with a roughness Ra of less than 20 micrometers, preferably less than 10 micrometers and greater than 3 micrometers. This fine graining makes it possible to ensure a function of scattering of the rays, making it possible to avoid or reduce any moiré or inhomogeneities.
    If the invention finds a particularly preferred application for the realization of raised brake light for a motor vehicle, they are of the type placed in a housing behind the rear window of the vehicle or of the housing type closed by a transparent or translucent ice and integrated in the bodywork outside the vehicle, the light module can also be used to produce indoor lighting devices comprising a housing closed by a transparent or translucent ice.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    claims
    1. Light module (6) intended to be arranged behind a transparent or translucent glass or glass, said module comprising: a location for at least one light source (10) capable of emitting light rays; an optical system (14, 18) capable of deflecting the light rays emitted by the light source (s) (10) so as to form a light beam along an optical axis (12) of the module, said optical system extending in a manner main direction (13) transverse to the optical axis (12) and comprising an exit face (182) of radii; characterized in that the output face (182) of the optical system (14, 18) has a sagittal section a convex or concave curved general profile.
    [2" id="c-fr-0002]
    2. Module (6) according to claim 1, characterized in that the optical system comprises at least one optical element (14, 18) transparent or translucent with an entrance face (141, 181) of the light and a face of output (142, 182), at least one of said faces (141, 142, 181) including Fresnel steps.
    [3" id="c-fr-0003]
    3. Module (6) according to claim 2, characterized in that the output face (182) of one or one of the optical elements (18) forms the output face of the optical system (14, 18).
    [4" id="c-fr-0004]
    4. Module (6) according to one of claims 1 to 3, characterized in that the output face (182) of the optical system (14, 18) is free of optical patterns.
    [5" id="c-fr-0005]
    5. Module (6) according to claim 4, characterized in that the output face (182) of the optical system (14, 18) is smooth.
    [6" id="c-fr-0006]
    6. Module (6) according to claim 4, characterized in that the output face (182) of the optical system (14, 18) is grained and preferably has a roughness Ra less than 20 micrometers.
    [7" id="c-fr-0007]
    7. Module (6) according to one of claims 1 to 6, characterized in that the output face (182) of the optical system comprises smooth areas and grained areas.
    [8" id="c-fr-0008]
    8. Module (6) according to one of claims 1 to 7, characterized in that the optical system comprises a first optical element (14) transparent or translucent with an inlet face (141) adapted to receive, preferably directly, the rays emitted by the light source (s) (10), said input face (141) comprising Fresnel steps.
    [9" id="c-fr-0009]
    9. Module (6) according to claim 8, characterized in that the Fresnel steps on the input face (141) of the first optical element (14) have curved and / or annular profiles, said optical element (14). comprising an exit face (142) with rectilinear Fresnel rungs.
    [10" id="c-fr-0010]
    10. Module (6) according to claim 9, characterized in that the Fresnel rungs on the output face (142) of the first optical element (14) are perpendicular to the main direction of the optical system.
    [11" id="c-fr-0011]
    11. Module (6) according to one of claims 8 to 10, characterized in that the optical system comprises a second optical element (18) transparent or translucent with an input face (181) adapted to receive the rays from the first optical element (14), and an output face (182) forming the output face of the optical system (14, 18).
    [12" id="c-fr-0012]
    12. Module (6) according to claim 11, characterized in that the input face (181) of the second optical element (18) comprises rectilinear Fresnel steps.
    [13" id="c-fr-0013]
    Module (6) according to claims 5 and 12, characterized in that the Fresnel steps on the input face (181) of the second optical element (18) are perpendicular to the main direction (13) of the optical system ( 14, 18).
    [14" id="c-fr-0014]
    14. Module (6) according to one of claims 11 to 13, characterized in that the second optical element (18) comprises two sub-elements separated by an air knife, the first sub-element bearing the face of input (181) and the second sub-element carrying the output face (182) forming the output face of the optical system (14, 18).
    [15" id="c-fr-0015]
    Motor vehicle light device (2), comprising a housing and a light module, characterized in that the light module is according to one of claims 1 to 14.
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    同族专利:
    公开号 | 公开日
    US20190003676A1|2019-01-03|
    EP3390900A1|2018-10-24|
    FR3045781B1|2020-03-06|
    CN108603649A|2018-09-28|
    WO2017103267A1|2017-06-22|
    US10760763B2|2020-09-01|
    CN108603649B|2021-03-19|
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    法律状态:
    2016-12-29| PLFP| Fee payment|Year of fee payment: 2 |
    2017-06-23| PLSC| Publication of the preliminary search report|Effective date: 20170623 |
    2018-01-02| PLFP| Fee payment|Year of fee payment: 3 |
    2018-12-31| PLFP| Fee payment|Year of fee payment: 4 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 5 |
    2020-12-31| PLFP| Fee payment|Year of fee payment: 6 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1562864|2015-12-18|
    FR1562864A|FR3045781B1|2015-12-18|2015-12-18|LUMINOUS MODULE, PARTICULARLY FOR HIGH LIGHTS WITH SMOOTH APPEARANCE|FR1562864A| FR3045781B1|2015-12-18|2015-12-18|LUMINOUS MODULE, PARTICULARLY FOR HIGH LIGHTS WITH SMOOTH APPEARANCE|
    US16/063,552| US10760763B2|2015-12-18|2016-12-19|Lighting module in particular for a high-mounted stop light of smooth appearance|
    EP16819525.3A| EP3390900A1|2015-12-18|2016-12-19|Luminous module, in particular for a vehicle stop light|
    PCT/EP2016/081738| WO2017103267A1|2015-12-18|2016-12-19|Luminous module, in particular for a vehicle stop light|
    CN201680072522.XA| CN108603649B|2015-12-18|2016-12-19|Lighting module, in particular for a brake light|
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