• 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 has a light signaling device having a plurality of distinct segments made by dedicated light guides, associated with light sources, for example of LED type, LED. The measures of the invention make it possible, for example, to produce a direction indicator lamp with a homogeneous light segment.
    公开号:FR3047295A1
    申请号:FR1650759
    申请日:2016-01-29
    公开日:2017-08-04
    发明作者:Jean-Francois Doha；Lionel Floc'h
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    Segmented light device for a motor vehicle using a plurality of light guides The invention relates to the field of traffic signal lights, particularly for motor vehicles. In particular, the invention relates to such devices making use of light guides.
    The signaling lights more particularly targeted by the invention are direction indicator lamps (commonly called flashing) and brake indicator lights (commonly called stop lamp). Other signaling functions such as the daytime traffic light (also known as the DRL for the English expression Daytime Running Light).
    A direction indicator light of a motor vehicle is used to inform drivers of neighboring vehicles in road traffic that the driver wishes to change direction. The correct perception of the indicator light is a key element of road safety. It is known that a direction indicator light is a light that emits a flashing amber or red light signal, the flashing and the color being chosen so as to attract the attention of an observer quickly to the transmitted signal. The use of a "tracer light" makes it possible to increase the perceptibility of such a signal and to increase road safety. Indeed, the Human Visual System reacts quickly to a perceived movement. In general, a scroll of a light is perceived faster than a change of color and even faster than a flicker. The use of light-emitting diodes, LEDs, is increasingly recommended in the field of motor vehicles, in order to achieve light functions such as daytime running lights, traffic lights, or for example direction indicator lights.
    It is known from patents EP2586992 and EP2696993 to provide a direction indicator scrolling with a plurality of LEDs arranged in a single row, said lamp may comprise one or more disjoint sections that succeed one another along a main direction without overlap, the LEDs being controlled either individually or in sequential ignition groups, from one end of the light to the opposite end, so as to obtain the scrolling effect.
    It is also known to use light guides capable of guiding light rays incident on an input face of the guide through a guide medium towards an exit face of the guide, which is offset with respect to the implantation of the light source whose light rays are derived. This technique makes it possible in particular to generate extended ranges of homogeneous brightness, using only one or only light sources. To the best knowledge of applicants, a scrolling indicator light using light guide technology is not known in the state of the art. The object of the invention is to propose a device that overcomes at least one of the drawbacks known in the state of the art. The invention relates to a light signaling device for a motor vehicle. The device includes a light ray output face that includes at least one row divided into a plurality of tracks that follow each other along a main direction. The device is notable in that it comprises a plurality of generally tubular shaped light guides. Each of the guides is intended to receive light rays from at least one light source associated therewith by an input face, to guide the rays through a guide zone, and to emit the rays by a corresponding output zone. to one of the beaches of the exit face. The arrangement of the light guides is such that for at least one of the guides, the guide zone is located upstream of the exit zone of at least one of the other guides, in the direction of light ray output.
    Viewed from the front, the guide zone of one of the guides is located behind the exit zone of at least one of the other guides.
    Preferably, the exit zone of each guide may correspond to a range distinct from the exit face of the device.
    The exit zone of each of the tubular light guides may preferably comprise a portion of a lateral surface of the guide at its end.
    Preferably, each of the guides may comprise in its exit zone reflective prisms for directing light rays propagating in the light guide towards a lateral surface of the guide.
    The inlet face of each of the tubular light guides may preferably correspond to an axial end of the guide.
    Preferably, each of the tubular light guides may have a different length.
    Preferably, the input faces of the light guides can be generally aligned in the same plane.
    At least one of the guides may preferably extend along its entire length generally along the main direction of the exit face.
    In a preferred manner, the exit zones of the light guides can form a generally smooth exit face.
    The exit areas of the light guides may preferably form a generally planar exit face of the device.
    Preferably, the guides may have a rectangular, circular or elliptical cross section.
    The device may preferably comprise means for controlling the light sources intended to light the light sources, and therefore the ranges of the output face, in a sequential and / or progressive manner.
    The light sources may preferably be disposed near a lateral end of the output face of the device. The light sources may advantageously be arranged so that the light rays they emit enter the light guide with which they are associated.
    Preferably, the light sources can be arranged on a single printed circuit board.
    Preferably, the light sources may comprise light-emitting diodes, LEDs, power-emitting diodes or laser diodes.
    The device may preferably comprise light sources capable of emitting light rays of different colors.
    Preferably, the device may be a direction indicator lamp with scrolling direction, the main direction of the exit face corresponding to the direction of travel of the light, and in which control means are intended to gradually and periodically turn on a plurality increasing contiguous beaches of the exit face.
    Alternatively, the device may be an indicator of the amplitude of a signal, and in that it comprises control means for lighting a subset of specific ranges as a function of the amplitude of said signal.
    The signal may preferably give an indication of the magnitude of a braking force applied to the vehicle equipped with the device.
    The measures according to the invention make it possible to propose a light device for a vehicle having homogeneous light segments. The device is further capable of producing a running direction indicator light or a brake force indicator. Segments illuminated in a progressive or sequential manner all have a homogeneous luminous appearance. Compared to known scrolling lights, which require a plurality of light sources arranged along the entire scrolling contour, the device according to the invention has the advantage that the number of total light sources is reduced. The development of more compact lights is thus made possible. In addition, by using light guides, placement constraints of the light sources in the device are largely relaxed, since the light faces or exit faces of the guides can be offset relative to the light sources themselves. Other features and advantages of the present invention will be better understood from the description and the drawings, which are presented only by way of indication and non-limiting of the invention, and among which: FIG. is a schematic front view of a preferred embodiment of the device according to the invention; FIG. 1b is a diagrammatic view from above of a preferred embodiment of the device according to the invention; FIG. 2 is a diagrammatic view from above of a preferred embodiment of the device according to the invention; FIG. 3 is a diagrammatic view from above of a preferred embodiment of the device according to the invention; FIG. 4 is a diagrammatic view from above of a preferred embodiment of the device according to the invention.
    In the exemplary description of the invention, similar references are used to designate similar or equivalent concepts in different embodiments of the invention. For example, the references 100, 200, 300 and 400 are used to designate a device according to the invention in four different embodiments.
    Unless otherwise indicated, the technical features described for a particular embodiment may be combined with technical features described for other embodiments.
    Motor vehicle light-signaling devices are per se known in the art and include certain means well known to those skilled in the art, which will not be described in detail in the context of the present invention. For example, in a known manner, devices using LED light-emitting diode-type light sources generally comprise means for controlling the power supply of the LEDs. Such control means comprise, in known manner, a converter circuit, which is capable of converting a direct current of a first intensity, supplied for example by the vehicle battery, into a direct current of charge having a second intensity, adapted to feed the LEDs of the device. Similarly, light-signaling devices generally comprise optical means such as optical collimation lenses known per se. The present description focuses on the technical aspects that are directly related to the invention, without excluding combinations of these new technical aspects with other well-known technical aspects.
    FIG. 1a shows a front view of a light-signaling device 100 according to a first embodiment in accordance with the invention. The front view is the view that the light rays from the exit face 110 of the device are generally aligned with the observation direction of an observer. The illustrated exit face 110 includes a row divided horizontally into a plurality of discrete tracks 126 that follow each other. The reference 150 indicates a main direction, which in the example shown is the horizontal direction from left to right. The device comprises a plurality of light guides 120 of generally tubular shape, rectangular, oval, circular or other section. Such light guides are in themselves known in the state of the art. The output areas 126, 126 ', 126 "of the guides 120, 120', 120", capable of ejecting light rays, each correspond to a range or to a horizontal segment of the output face 110. Light sources 130 , 130 ', 130 ", exemplarily represented by semiconductor elements of LED type, inject light rays in the guides 120, 120', 120" respectively by the input faces 122, 122 ', 122 "thereof . In general, the device comprises as many light guides as beaches or segments. In addition, each guide is associated with at least one light source whose light rays can be guided to its output area. Each guide has a generally tubular shape. An axial end of the tube, or a bottom, corresponds to the input face of the light rays.
    Figure 1b, which is a top view of the device 100 provides a better understanding of the structure of the device. The light guides 120 ", 120 ', 120 follow one behind the other and have increasing lateral expanses. In the example shown, the guide 120 extends from the inlet face 122 over the entire width of the outlet face 110 of the device. However, the light rays emitted by the light source 130 and entering the guide by the face 122, are first guided through a guiding zone 124, dark appearance. This guide zone corresponds to a part of the light guide in which the light rays are propagated towards the exit zone, without being able to escape outside the guide. The exit zone 126 of the guide corresponds to an area located at the end of the guide which is distal to the location of the light source 130. In the exit zone, reflective prisms are arranged inside the guide . The arrangement of the prisms is such that they direct the guided rays towards the outside of the guide. The arrangement and the geometry of the prisms is such that the light rays are brought out of the guide by total reflection effect. The exit zone generally comprises a portion of lateral surface of the tubular guide directed in the direction of exit of the light rays.
    The length of the guide 120 ', disposed in front of the guide 120 in the illustration given, corresponds to the extent of the dark zone or guide zone 124 of the guide 120. The light rays emitted by the light source 130' and entering the guide by the face 122 ', are first guided through a guide zone 124', dark appearance. The exit zone 126 'of the guide corresponds to an area at the end of the guide which is distal to the location of the light source 130'. Finally, the exit zone 126 "of the guide 120" comes to rest in front of the guide zone 124 'of the guide 120'. The example shown comprises three segments or ranges 126, 126 ', 126 "which together form the output face 110 of the device. Obviously, a different plurality of ranges can be achieved according to the same principle. It becomes apparent that a scrolling light becomes achievable using the device described, depending on the source control mode 130, 130 ', 130 "selected. Ignition of the first source 130 ", followed by the second 130 'and the third 130 in a progressive manner, that is to say without turning off the sources previously lit, allows to create the visual effect of a scroll bright from left to right. Once all the tracks 126 ", 126 ', 126 illuminated, non-illustrated control means can cut off the power sources 130", 130', 130 in a synchronized manner, before starting the progressive ignition sequence. Other sequences and effects are conceivable and achievable by those skilled in the art using the measurements of the device according to the invention, without departing from the scope of the invention.
    FIG. 2 shows a view from above of a light-signaling device 200 in accordance with a second embodiment of the invention. The direction 250 along which the light guides 220 extend is curved. The exit face 210 has a curved shape. In the example shown, four segments 226 of different lateral extents are provided and made by four separate light guides 220. Each guide comprises an input face 222 through which the light rays coming from a light source 230 penetrate into the guide and are guided along the guide zone 224 before being reflected towards the outside of the guide by the face output 226.
    Figure 3 shows another embodiment of the device 200 according to the invention. In this embodiment, the geometry and arrangement of the light guides 320 is such that their respective exit areas 326 are along a single line or curve. Indeed, the line 360 shown in the figure can be any curve in three dimensions. In this embodiment, the guide zones 324 follow one behind the other seen from the front. However, at the junction of the guide areas 324 and exit areas 326, the guide 320 has a curved geometry satisfying the light guiding conditions, which provides the arrangement shown.
    In the embodiments just described, the light sources are generally located at a common end of the light guides. This has the advantage of being able to locate all the sources of the device on the same printed circuit. This provision does not present a limitation of the device. The light sources may also be arranged on separate printed circuit boards and / or at separate locations within the device. The respective geometry of the light guides must however be adapted according to the position of the sources, as indicated by the example of FIG. 4.
    The two light guides 420 ', 420 of the device 400 follow one behind the other along a direction generally perpendicular to the direction of emission of the light rays once they are out of the guides. The guides generally extend along the main direction 450. The guide 420 extends from the inlet face 422 in a first direction for a length that corresponds at least to the guide zone 424. The output 426 comprising the reflective prisms is aligned with the direction 450. The exit area 426 of the guide corresponds to an area at the end of the guide which is distal to the location of the light source 430. In this example, the arrangement of the light guides 426, 426 'is such that the guide zone 424 of the guide 426 is upstream of the exit zone 426' of the guide 420 ', in the light ray output direction.
    In all embodiments, the light sources may be chosen so as to emit light rays of different colors, for example, white, red or amber rays. All sources of the device may be chosen to emit the same color, or alternatively different color sources may be used in the same device.
    When the device is applied to a braking indicator, a signal indicating the braking force, provided for example by internal computer means to the motor vehicle equipped with the device according to the invention, can be used by the source control means in order to switch on a number of ranges proportional to the amplitude of the braking force.
    If the description that has just been made is based on the general example of a direction indicator light, it is clear that the invention is not limited to this application example. It can be applied by one skilled in the art to the realization of another signaling function, including a brake indicator light. In the latter case, if the braking indicator function is combined with a lantern function, that is to say that the two functions have light sources in common, the light intensity of said sources changing from one function to the other. other, being higher for the function indicator braking, then it will be considered that for these common light sources and in the case where the lantern function is also active, the extinction provided in the process will correspond in this case to a decrease of intensity.
    Alternatively, progressive interior illumination devices of the passenger compartment of a motor vehicle can also be implemented using the structural measures of the present invention.
    权利要求:
    Claims (17)
    [1" id="c-fr-0001]
    claims
    A light-signaling device (100, 200, 300, 400) for a motor vehicle, comprising an output face (110, 210, 310, 410) of light rays which comprises at least one row divided into a plurality of ranges ( 126, 226, 326, 426) which follow each other along a main direction (150, 250, 350, 450), characterized in that it comprises a plurality of light guides (120, 220, 320, 420) of generally tubular shape, each of the guides being intended to receive light rays coming from at least one light source (130, 230, 330, 430) associated therewith by an input face (122, 222, 322, 422), guiding the spokes through a guide zone (124, 224, 324, 424), and emitting the rays through an exit zone corresponding to one of the exit face tracks (126, 226, 326, 426) (110, 210, 310, 410), and in that the arrangement of the light guides is such that for at least one of the guides (120, 220, 320, 420), the guide zone (1 24, 224, 324, 424) is located upstream of the exit region (126, 226, 326, 426) of at least one of the other guides, in the light ray output direction.
    [2" id="c-fr-0002]
    2. Device according to claim 1, characterized in that the exit zone of each of the tubular light guides comprises a portion of a lateral surface of the guide located at its end.
    [3" id="c-fr-0003]
    3. Device according to one of claims 1 or 2, characterized in that each of the guides comprises in its exit zone reflective prisms for directing light rays that propagate in the light guide to a side surface of the guide.
    [4" id="c-fr-0004]
    4. Device according to one of claims 1 to 3 characterized in that the inlet face of each of the tubular light guides corresponds to an axial end of the guide.
    [5" id="c-fr-0005]
    5. Device according to one of claims 1 to 5, characterized in that each of the tubular light guides has a different length.
    [6" id="c-fr-0006]
    6. Device according to one of claims 1 to 5, characterized in that the input faces of the light guides are generally aligned in the same plane.
    [7" id="c-fr-0007]
    7. Device according to one of claims 1 to 6, characterized in that at least one of the guides extends over its entire length generally along the main direction of the exit face.
    [8" id="c-fr-0008]
    8. Device according to one of claims 1 to 7, characterized in that the exit zones of the light guides form a generally smooth exit face.
    [9" id="c-fr-0009]
    9. Device according to one of claims 1 to 8, characterized in that the output zones of the light guides form a generally planar exit surface of the device.
    [10" id="c-fr-0010]
    10. Device according to one of claims 1 to 9, characterized in that the guides have a rectangular, circular or elliptical cross section.
    [11" id="c-fr-0011]
    11. Device according to one of claims 1 to 10, characterized in that it comprises means for controlling the light sources for turning on the light sources, and therefore the ranges of the output face, in a sequential and / or progressive manner.
    [12" id="c-fr-0012]
    12. Device according to one of claims 1 to 11, characterized in that the light sources are disposed near a lateral end of the output face of the device.
    [13" id="c-fr-0013]
    13. Device according to one of claims 1 to 12, characterized in that the light sources are arranged on a single printed circuit board.
    [14" id="c-fr-0014]
    14. Device according to one of claims 1 to 13, characterized in that the light sources comprise light emitting diodes, LEDs, power LEDs or laser diodes.
    [15" id="c-fr-0015]
    15. Device according to one of claims 1 to 14, characterized in that it comprises light sources capable of emitting light rays of different colors.
    [16" id="c-fr-0016]
    16. Device according to one of claims 1 to 15, characterized in that the device is a direction indicator lamp scrolling, the main direction of the output face corresponding to the direction of travel of the fire, and in which control means are intended to gradually and periodically turn on an increasing plurality of contiguous ranges of the output face.
    [17" id="c-fr-0017]
    17. Device according to one of claims 1 to 16, characterized in that the device is an indicator of the amplitude of a signal, and in that it comprises control means for lighting a subset of specific ranges. depending on the amplitude of said signal.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3047295B1|2020-03-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    EP2824387A1|2013-07-08|2015-01-14|Odelo GmbH|Light guide element, method for producing the same, and illuminant and motor vehicle lamp with such a light guide element|DE102017217736A1|2017-10-05|2019-04-11|Odelo Gmbh|Animatable cascade light guide|
    EP3636492A1|2018-10-12|2020-04-15|Compagnie Plastic Omnium|Motor vehicle assembly comprising a lighting fabric|
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    法律状态:
    2017-01-31| PLFP| Fee payment|Year of fee payment: 2 |
    2017-08-04| PLSC| Publication of the preliminary search report|Effective date: 20170804 |
    2018-01-31| PLFP| Fee payment|Year of fee payment: 3 |
    2019-01-30| PLFP| Fee payment|Year of fee payment: 4 |
    2020-01-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-01-28| PLFP| Fee payment|Year of fee payment: 6 |
    2022-01-31| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1650759A|FR3047295B1|2016-01-29|2016-01-29|SEGMENTED LIGHT DEVICE FOR A MOTOR VEHICLE USING MULTIPLE LIGHT GUIDES|
    FR1650759|2016-01-29|FR1650759A| FR3047295B1|2016-01-29|2016-01-29|SEGMENTED LIGHT DEVICE FOR A MOTOR VEHICLE USING MULTIPLE LIGHT GUIDES|
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