• 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 proposes to overcome the drawbacks resulting from reflection and focusing, by focusing means (2) of a light module for lighting and / or signaling of a motor vehicle, on a mask (3). ) arranged under the module, rays emitted by the sun. The light assembly according to the invention comprises transmitting means and focusing means of one or more light beams, and a mask (3), part of which extends below said focusing means (2). ). Part (6) of said mask is transparent to light, so that light rays (4) from the sun and reflected and focused by said focusing means on said mask (3) pass through said transparent portion (6).
    公开号:FR3047939A1
    申请号:FR1651305
    申请日:2016-02-18
    公开日:2017-08-25
    发明作者:Marc Brassier；Jean-Claude Puente
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    LUMINOUS ASSEMBLY FOR LIGHTING AND / OR SIGNALING A MOTOR VEHICLE.
    The present invention relates to light assemblies for lighting and / or signaling of motor vehicles.
    Lighting assemblies for lighting and / or signaling of a motor vehicle may comprise a light module, housing an optical assembly for generating and focusing one or more light beams, and a mask that surrounds the light module .
    In known manner, the optical assembly comprises one or more light-emitting sources (incandescent or gas-discharge lamps, or light-emitting diodes) and optical means for forming, focusing and guiding one or more light beams according to the number of sources. transmitters implemented. These optical means generally comprise means for optically deflecting the rays emitted by the sources towards focusing means arranged at the output of the optical assembly, for example one or more lenses.
    The mask is generally a piece of complex geometry, part of which extends below said focusing means. Its main function is the protection or concealment of certain elements such as, by way of non-exhaustive examples, fixing elements of the light-emitting sources or sensors integrated into the lighting and / or signaling light module. The mask also has an aesthetic function, contributing to the general appearance of the optics seen from outside the vehicle. As such, its construction and its durability must be compatible with the aesthetic constraints of said vehicle. In particular, depending on the range level of the vehicle, the masks may have a black or metallic appearance, and it is expected that they retain this aspect, without deformation.
    It may happen, under particular sunlight conditions and vehicle position, that rays emitted by the sun are deflected by the lens and are focused, within the optical assembly, on that portion of the mask that extends under the aforementioned focusing means.
    This phenomenon, known as "Sunburn", generates very high local heating, local heating that leads to sometimes severe degradation of the mask or elements located in its vicinity.
    This phenomenon is all the more marked and can take on a larger scale as the mask is made of black or dark color materials, which absorb heat so that a focusing of the rays at a specific point can result. overheating and irreversible deformation of the mask.
    The document FR2896852 proposes the establishment of a set of means for detecting the focusing of rays emitted by the sun, for example one or more thermal, optical or electrical sensors. According to the solution proposed by the document FR2896852, the signals supplied by these detection means actuate protective means such as removable covers. Such a solution, however, requires the establishment of electronic control and servo control relatively complex and expensive. It also increases the overall size of the lighting and / or signaling assembly. The aim of the invention is to propose a simple and inexpensive solution for overcoming the drawbacks resulting from reflection and focusing by means of focusing a light module for lighting and / or signaling of a vehicle. automobile, on the portion of mask disposed under the module, rays emitted by the sun.
    For this purpose, the invention proposes a lighting assembly and / or signaling of a motor vehicle, which comprises a light module housing emission means and focusing means of one or more light beams, and which also comprises a mask, a portion of which extends below said focusing means. According to the invention, said portion of the mask comprises a portion transparent to light, such that light rays originating from the sun and reflected and focused by said focusing means on said mask portion pass through said transparent portion.
    Advantageously, said transparent portion is of small size, such that it is not visible, to the naked eye, by an observer located in front of the lighting and / or signaling assembly.
    It will be understood that according to the invention, it is sought to make a part of the mask transparent only on the zone of impact of the rays issuing from the sun which come to strike the mask after reflection and focusing by the lens. This phenomenon occurs only under particular conditions, so that it is possible to determine the impact zone of these rays for each luminous assembly model. It is therefore possible to propose a transparent portion of small size that is effective for the transmission of rays and little disadvantageous for the aesthetics of the whole. In particular, it can be advantageously provided that the transparent portion has an inclination relative to the normal to the plane of the mask, so as to be oriented towards said focusing means.
    According to various features of the invention, taken alone or in combination: the mask portion has a first face opposite to a second face exposed to said light rays, said portion being transparent from the first face to the second face; - The mask is made of a base material, transparent or translucent, combined with an additive to make the mask darker than in its original composition without additive; the base material may be a polymer with a high transparency property, in particular from the family of polycarbonates or from the family of polyethersulfones; the additive may consist of a thin layer of a metal coating, carried by a first face of the mask, opposite to the face of said mask exposed to said light rays, and the coating is then perforated by disengaging said transparent portion; the additive may be included in the thickness of the mask, the additive being injected into said base material: the portion transparent to said rays may in this case result from an opening formed in said mask; the coating is perforated by laser ablation to form this opening; the mask is obtained by injection of two polymeric materials of different thermal properties, one of which forms said part transparent to said rays coming from the sun and reflected and focused on said mask by said focusing means, and the other of which constitutes the remainder said mask; - The transparent portion has a circular arc shape, following the curvature of a lens forming said focusing means. Other characteristics and advantages of the invention will emerge from the description which follows of one of its preferred embodiments, as well as from the following figures: FIG. 1, which is a schematic side view of a light assembly for lighting and / or signaling of a vehicle, exposing the technical problem of "Sunburn" that proposes to solve the prior art; - Figure 2, which is a side view of a light assembly for lighting and / or signaling according to a first embodiment of the invention; - Figure 3, which is a side view of a light assembly for lighting and / or signaling according to a second embodiment of the invention; - And Figure 4 which shows a top view of a light assembly according to the invention.
    To simplify the representation and the reading, the invention will be considered in its application to a light assembly for lighting and / or signaling in which a module comprises a single light-emitting source, the following applying of the same regardless of the number of light sources considered. Likewise, the invention will be considered in the following in its application to a light assembly for lighting and / or signaling located at the front of a motor vehicle, a position in which the probability of being exposed to the problem which the invention aims to answer is the strongest, but it will be understood that the invention can be applied in the same manner to any lighting and / or signaling light assembly of said vehicle, regardless of its position on this last.
    As mentioned in the preamble of this document, a light assembly for lighting and / or signaling of a motor vehicle includes, in a non-exhaustive manner, a light module 1 which includes, in particular, a light emitting source ( not shown), optical deflection means of the rays emitted by the light source (not shown) intended to ensure a correct distribution of the light energy in the direction of focusing means arranged at the output of the module for the creation of a beam luminous. According to the preferred embodiment shown, said focusing means consist of a lens 2, but the invention applies regardless of the focusing means selected. The luminous lighting and / or signaling unit also comprises a mask 3, which confers on the lighting and / or signaling assembly a portion of its aesthetic appearance as perceived by an observer outside the vehicle, in particular by hiding certain elements of said module vis-à-vis the outside (as non-limiting examples, component fasteners of the light module). Of complex shape, produced most often by injection of a plastic material in a suitable mold, the mask 3 comprises at least one portion which extends under the focusing means 2, as illustrated for example in FIGS. 3.
    In certain driving situations, illustrated by way of example in FIG. 1 and combining in particular a position of the vehicle facing the sun and in a certain slope, and a position of the sun sufficiently high in the sun, light rays 4 coming from the sun arrive at the focusing lens 2 at an angle α such that, reflected by said lens 2, said light rays 4 are focused by the latter and concentrated in a small area of the portion of the mask 3 located under the lens 2. this area of concentration of sunlight 5, the mask 3 then undergoes a high temperature rise, which leads to accelerated aging and, in some cases, irreversible damage to said mask. This phenomenon is all the more important when at least this portion of the mask 3 has a very dark visual appearance, even black, since the material does not reflect light and absorbs heat.
    As illustrated in particular in FIGS. 2 to 3, the invention proposes making transparent to the light rays 4 coming from the sun and focused by the lens 2 a portion 6, of small dimensions, of the mask 3, including said concentration zone 5 of said light rays. In order to define at best the embodiments of this transparent part 6, on this mask 3 is defined a first face 3a, called a rear face, opposite to a second face 3b of the mask which is exposed to the light rays 4 coming from the sun and focused. by the lens 2.
    The transparent part 6 extends over the entire thickness of the mask 3, from the first face 3a to the second face 3b, so that the light rays 4 coming from the sun, reflected and focused by the lens 2, pass through the mask 3 without creating local heating, or generating only a very small heating.
    Advantageously, the zone of concentration 5 of the sun's rays on the mask being of small width, the transparent portion 6 is also of small width (typically of the order of 1 mm in width). It follows that the overall visual appearance of the mask and the light assembly, for an observer placed in front of the vehicle equipped with a lighting and / or signaling light assembly according to the invention, is unchanged.
    It should be noted, as illustrated in Figure 4 which shows schematically a top view of a light assembly according to the invention, with only the lens and a portion of mask visible, that if the portion 6 made transparent to the rays 4 from the sun, reflected and focused on the mask by the lens forming the focusing means 2, is of small width, its length is preferably equal to or greater than the width of the focusing means 2. The transparent portion 6 to the rays from the In the case illustrated, the sun has a shape of an arc of a circle, matching the convex shape of the lens forming here the focusing means 2. This form of an arc of a circle corresponds to the displacement of the substantially punctual zone of concentration of the rays of the sun. on the mask depending on the inclination of the vehicle and the position of the sun in the sky.
    It is understood that the portion 6 transparent to the rays of the sun is advantageously made as shown in Figures 2 and 3, with an inclination relative to the normal to the plane of the mask, towards the lens 2. The transparent portion 6 is thus oriented substantially in the direction of the rays at the point of concentration of the rays on the mask, so as to pass more efficiently to these rays, and is thus oriented towards the inside of the vehicle, further accentuating the impression for the observer that the mask does not have a part transparent to the rays.
    According to the invention, it is possible to produce the mask 3 and the transparent part 6 in different ways, which will be described in a non-exhaustive manner thereafter.
    It is possible, in a first variant, to produce the mask 3 in a high-transparency polymer base material, of the polycarbonate (PC) or polyether sulphone (PES) type, by combining this material with the presence of an additive suitable for make the mask as a whole opaque with the exception of the zone corresponding to the part 6 made transparent to the radii 4.
    This additive may consist of a thin layer of a coating 7 disposed on the rear face 3a of the mask, as illustrated in FIG. 2. By way of nonlimiting example, said coating 7 may consist of a layer of paint or in a metallic material deposited in a thin layer. The coating may for example be deposited by aluminizing.
    The coating 7 is darker than the base material of the mask and this coating thus participates in the dark appearance that is desired to give the mask. It should be as has been specified above that this coating is not present in the zone corresponding to Part 6. The absence of coating 7 can be obtained by masking of said portion 6 during removal of said coating, or by ablation selectively said coating on said portion 6 after removal thereof. As illustrated in FIG. 2, the thin layer of material 7 is absent from the part 6 of the mask on which the rays 4 reflected and focused by the lens 2 are concentrated. The "black diffusing" visual appearance of the assembly the mask is thus preserved, but the mask 3 becomes, in its portion 6, transparent to the spokes 4 which then pass through without generating excessive heating. By way of example, reductions of more than 30 degrees Celsius in heating the mask 3 have been measured by the implementation of this embodiment of the invention.
    According to an alternative embodiment of the invention, it is possible to obtain the transparent part 6 with a mask 3 made by bi-injection. The two different materials consist of a first transparent material which extends over a part 6 of small width (of the order of a millimeter) of said mask including the concentration zone 5 of the sun's rays on the mask, and a second material , completely opaque and lower cost, fulfilling the aesthetic functions expected of the mask 3. Such an embodiment, slightly more expensive than the previous embodiment disclosed, however, achieves, for a cost that remains limited, performance thermal even higher, while extending the field of aesthetic possibilities.
    The foregoing description clearly explains how the invention makes it possible to achieve the objectives it has set itself and in particular to propose a luminous assembly that makes it possible to greatly reduce the impairments resulting from reflection and focusing, within said set , rays of light from the sun. These objectives are achieved in particular by the integration of a transparent part to these rays in a mask whose rendering for the external observers is opaque, on a dimension adapted to let these rays pass without being noteworthy for an outside observer that such a transparent part exists.
    It should be noted, however, that the invention can not be limited to the embodiments described herein, and extends to all equivalent means and any technically operative combination of such means. In particular, in the case where the module for lighting and / or vehicle signaling comprises a plurality of light-emitting sources and a plurality of focusing means arranged in series to generate a plurality of light beams, it will be possible to predict without leaving the context of the invention that the geometry of the portion 6 may advantageously be adapted, especially in length, to be made transparent to the spokes 4 from the sun and reflected and focused by all of the focusing means 2 of the module, or it will be possible to provide in series in the thickness of the mask 3 several parts 6, each rendered transparent to said spokes 4.
    权利要求:
    Claims (8)
    [1" id="c-fr-0001]
    A luminous assembly for illuminating and / or signaling a motor vehicle, comprising a light module housing at least transmission means and focusing means (2) of one or more light beams, as well as a mask (3), a portion of which extends below said focusing means (2), characterized in that a portion (6) of said mask (3) is transparent to light, said transparent portion being disposed on the mask in a zone defined as a contact zone of light rays (4) originating from the sun and reflected and focused on said portion of the mask (3) by said focusing means (2), so that these light rays ( 4) pass through the mask at said transparent portion (6).
    [2" id="c-fr-0002]
    2. The light assembly of claim 1, characterized in that said transparent portion (6) has an inclination relative to the normal to the plane of the mask (3), so as to be oriented towards said focusing means (2).
    [3" id="c-fr-0003]
    3. Light assembly according to either of claims 1 or 2, characterized in that the mask portion (3) has a first face (3a) opposite a second face (3b) exposed to said light rays (4). ), said transparent portion (6) extending over the entire height of the mask from the first face (3a) to the second face (3b).
    [4" id="c-fr-0004]
    4. Light assembly according to any one of claims 1 to 3, characterized in that said mask (3) is made of a base material, transparent or translucent, and characterized in that said base material is combined with an additive to make the mask darker than in its original composition without additive.
    [5" id="c-fr-0005]
    5. Light assembly according to the preceding claim, characterized in that the additive consists of at least a thin layer of a coating (7) disposed on a first face (3a) of the mask (3), opposite to a second face ( 3b) of said mask (3) exposed to said light rays (4), said transparent portion (6) being formed by the base material of the mask and an opening formed in said coating (7).
    [6" id="c-fr-0006]
    6. Light assembly according to the preceding claim, characterized in that the coating is perforated by laser ablation to form said opening.
    [7" id="c-fr-0007]
    7. Light assembly according to any one of claims 1 to 3, characterized in that the mask (3) is obtained by injection of two polymeric materials of different thermal properties, one of which forms said portion (6) transparent to said rays. (4) from the sun and reflected and focused on said mask (3) by said focusing means (2), and the other constitutes the remainder of said mask (3).
    [8" id="c-fr-0008]
    8. Light assembly according to one of the preceding claims, characterized in that the transparent portion (6) has a circular arc shape, following the curvature of a lens forming said focusing means (2).
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3047939B1|2019-04-05|
    US10267480B2|2019-04-23|
    CN107091444B|2021-08-10|
    US20170241612A1|2017-08-24|
    CN107091444A|2017-08-25|
    EP3208526A1|2017-08-23|
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    法律状态:
    2017-02-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-08-25| PLSC| Search report ready|Effective date: 20170825 |
    2018-02-26| PLFP| Fee payment|Year of fee payment: 3 |
    2019-02-28| PLFP| Fee payment|Year of fee payment: 4 |
    2020-02-28| PLFP| Fee payment|Year of fee payment: 5 |
    2021-02-26| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1651305A|FR3047939B1|2016-02-18|2016-02-18|LUMINOUS ASSEMBLY FOR LIGHTING AND / OR SIGNALING A MOTOR VEHICLE.|
    FR1651305|2016-02-18|FR1651305A| FR3047939B1|2016-02-18|2016-02-18|LUMINOUS ASSEMBLY FOR LIGHTING AND / OR SIGNALING A MOTOR VEHICLE.|
    EP17154926.4A| EP3208526A1|2016-02-18|2017-02-07|Lighting assembly for lighting and/or signalling of a motor vehicle|
    US15/428,540| US10267480B2|2016-02-18|2017-02-09|Lighting assembly for lighting and/or signaling in a motor vehicle|
    CN201710084939.4A| CN107091444B|2016-02-18|2017-02-16|Lighting assembly for lighting and/or signalling in a motor vehicle|
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