• 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:
    A light device (10) comprising a light source (12) and a light guide (14), the light guide comprising: - an input diopter (20) configured to let in the light emitted by the light source illuminating the diopter input, - an exit diopter (22) configured to let the light out of the light guide, characterized in that the light guide further comprises at least two through holes (30, 31) disposed between the diopter of entrance and exit diopter.
    公开号:FR3015005A1
    申请号:FR1302927
    申请日:2013-12-13
    公开日:2015-06-19
    发明作者:Stephane Bombard；Maryline Thorailler
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the field of lighting and particularly to facade lighting, for example control panels of motor vehicles, in which different shapes and dimensions of lighting are generally sought to illuminate including control buttons or indicator lights . More specifically, the invention relates to a light device comprising a light source and a light guide, and to a light and a dashboard of a motor vehicle intended in particular for a motor vehicle comprising such a light device. The number of luminous devices present in the passenger compartment of a motor vehicle increases with the sophistication of the vehicles. Some of these light devices are made visible to the user by means of a light source illuminating a dedicated area via a light guide.
    [0002] In such devices, the distribution of light over the entire area to be illuminated presents difficulties. Indeed, obtain a homogeneous illumination is all the more complex that the area to be illuminated has a dimension in a direction greater than that of the light source used. In particular, it is difficult to obtain uniform illumination in the case of an area to be illuminated in the form of a line.
    [0003] In order to obtain this homogeneous illumination, it is generally necessary to multiply the number of light sources. However, the use of a large number of light sources presents implementation difficulties, in particular in terms of space and power supply. In addition, a large amount of light sources can produce, in addition to too much heat that may interact with other adjacent equipment, an increase in energy consumption. Thus, there is a need to provide a light device for uniform illumination of an area to be illuminated, one of whose dimensions is greater than that of the light source.
    [0004] The invention thus proposes a light device comprising a light source and a light guide, the light guide comprising: an input diopter configured to let in the light emitted by the light source illuminating the input diopter, Output diopter configured to let light out of the light guide.
    [0005] The light guide further comprises at least two through holes disposed between the input diopter and the output diopter. Advantageously, the through holes of the light device according to the invention make it possible to distribute the light rays coming from a light source in the main direction over an enlarged area of the output diopter with respect to the prior art. The device according to the invention thus makes it possible to obtain a homogeneous distribution of the light rays on the output diopter and, consequently, a more uniform illumination, while limiting the number of light sources used.
    [0006] The device according to the invention may also comprise one or more of the following characteristics, considered individually or in any technically possible combination: the through holes have V-shaped shapes; and / or - the points of the V-shaped through-holes are oriented in the direction of the input diopter; and / or - the through holes are closer to the input diopter than the output diopter; and / or - the through holes are substantially at the same distance along the length of the light guide of the input diopter; and / or the device comprises at least three through holes, at least two of which are substantially at the same distance along the length of the light guide of the input diopter; and / or - the light guide has a substantially parallelepipedal rectangle shape; and / or - the thickness of the light guide is greater than or equal to 0.6 mm and less than or equal to 4 mm; and / or - the through holes pass through the light guide according to the thickness of said light guide; and / or - the input diopter comprises at least one dispersive element of light; and / or - the exit diopter comprises at least one dispersive element of light; and / or - the dispersive light element is in the form of at least one hemicylindrical lens; and / or the light source comprises at least one light-emitting diode arranged facing the input diopter.
    [0007] The invention also relates to a warning light intended in particular for a control panel of a motor vehicle comprising a light device according to the invention. The invention further relates to a dashboard of a motor vehicle having a man-machine interface comprising a light device according to the invention. The invention will be better understood in the light of the following description which is given for information only and which is not intended to limit said invention, accompanied by the figures below: FIG. schematic a light device according to a first embodiment of the invention, and - Figure 2 schematically illustrating a light device according to a second embodiment of the invention. As illustrated in Figure 1, the invention relates to a light device 10 comprising a light source 12 and a light guide 14. Advantageously, the light guide 14 is in one piece and / or formed of a single material. Thus light propagates naturally by total reflection within said light guide 14 without obstacle or separation between the portions of said guide which could affect the flow of light. As shown in FIG. 1, the light guide 14 may have a substantially rectangular parallelepipedal shape. Typically, the thickness of the light guide 14 is between 0.6 mm and 4 mm for example about 0.8 mm and the width of the light guide is between 3 mm and 20 mm for a length of 10 mm to 60 mm. mm. The light guide 14 comprises an input diopter 20 and an exit diopter 22. The input diopter 20 is configured to let the light emitted by the light source 12 into the light guide 14. Advantageously, in order to to limit the losses of light rays, the light source 12 is arranged opposite the input diopter 20. In order to reduce the space requirement and the power consumption, the light source 12 advantageously comprises at least one light-emitting diode arranged facing the diopter d 'Entrance. The light-emitting diode may be replaced by an equivalent light source, of the OLED, AMOLED or FOLED type. According to the embodiment illustrated in FIG. 2, the input diopter 20 may comprise dispersive light elements 21. These light-dispersive elements may be in the form of a hemicylindrical lens.
    [0008] Advantageously, the dispersive light elements 21 make it possible to burst the light rays coming from the source 12 penetrating into the light guide 14 through the input diopter 20. The output diopter 22 is configured to let the light from the light guide come out. According to the embodiment shown in FIG. 2, the output diopter 22 may comprise light dispersive elements 23. These light dispersive elements 23 may be in the form of semi-cylindrical lenses. The dispersive elements 23 serve to disperse the light emerging from the light guide 14 by the output diopter 22 thus making the light distribution at the output of the light device more homogeneous. According to the invention, the light guide 14 comprises at least two through holes 31, 30 disposed between the input diopter 20 and the exit diopter 22. Preferably the through holes pass through the light guide according to the thickness of said guide from light. The thickness of the light guide corresponds to the third dimension of said light guide, the other two being the length and the width. Advantageously, the presence of through holes in the light guide of the light device according to the invention provides a uniform illumination at the output diopter 22. As shown in Figure 1, at least one of the through holes may have 20 a V shape. Advantageously, this shape for the through holes provides good dispersion of the light in the light guide, thus increasing the homogeneity of the illumination at the output diopter. Preferably the V-shaped through-holes are oriented towards the input diopter to further increase the dispersive effect of said through holes. According to another embodiment not shown, the through holes may have different shapes of the V, for example a cylindrical or semicylindrical shape, knowing that the holes are preferably configured so as not to form a diopter which is parallel to the entrance diopter. In order to ensure a great homogeneity of illumination at the exit diopter 30, in particular by a mixture of the light rays in the light guide, the through holes are arranged so as to be closer to the input diopter than to the diopter Release. Preferably the through holes are disposed in the first quarter of the light guide along the length starting from the input diopter.
    [0009] As shown in FIG. 1, the through holes may be arranged substantially at the same distance along the length of the light guide of the input diopter. Preferably the through holes are not contiguous to each other. Thus, a space is provided between the through holes according to the width of the light guide allowing a portion of the light rays from the light source to propagate in the light guide directly i.e. without reflection, to the exit diopter. As illustrated in FIG. 2, the light guide may comprise several sets of through holes arranged at different distances along the length of the light guide of the input diopter. By length of the light guide is meant the largest dimension of the light guide. Advantageously, the presence of several sets of through hole makes it possible to further increase the mixing of the light rays in the light guide and thus the homogeneity of the illumination of the output diopter. Preferably, the through holes of the different sets are not contiguous to each other and likewise the different sets of through holes are not contiguous to each other. As illustrated in FIG. 1, the light rays represented by the arrows emerging from the light source 12 penetrate the light guide 14 through the input diopter 20. The incoming light beam beam is dispersed by the dispersive elements 21 arranged on said light beam. 20. A part of the light rays after penetrating the light guide 14 passes directly, ie without reflection, said light guide 14 of the input diopter 20 to the exit diopter 22. These light rays pass between the through holes 30, 31 and arrive at the exit diopter 22 following the emission cone proper to the light source 12. These light rays propagate in the light guide 14 as if said light guide did not include through hole. Part of the light rays after penetrating the light guide 14, is reflected by the diopters formed by the edges of the through holes. Given the configuration of the through holes, these light rays are deflected by total reflection in the direction of the diopters formed by the edges of the light guide. The light rays reflected by the diopters formed by the edges of the light guide will then be returned to the direction of the output diopter will be reflected on another diopter formed by the edges of the light guide or through a through holes in the direction of the exit diopter 22.
    [0010] All of the light rays coming out of the light guide at the exit diopter 22 are dispersed by the dispersive elements 23. Thus, the through holes of the light guide of the light device according to the invention allow a spreading of the beam of rays. light propagating in the light guide and, therefore, to obtain a uniform illumination at the output diopter. The light device according to the invention can advantageously be used in light indicators intended in particular for a man-machine interface of a motor vehicle, for example in devices of the backlit band type, and more generally, light devices whose zone to illuminate is substantially larger than the size of the light sources used.
    权利要求:
    Claims (16)
    [0001]
    REVENDICATIONS1. A light device (10) comprising a light source (12) and a light guide (14), the light guide comprising: - an input diopter (20) configured to let in the light emitted by the light source illuminating the diopter input device; - an exit diopter (22) configured to let out light from the light guide, characterized in that the light guide further comprises at least two through holes (30, 31) disposed between the diopter of entrance and exit diopter.
    [0002]
    2. Device according to claim 1, wherein the through holes (30, 31) have V-shaped shapes.
    [0003]
    3. Device according to one of claims 1 or 2, wherein the points of the V-shaped through holes (30) are oriented towards the input diopter.
    [0004]
    4. Device according to any one of the preceding claims, wherein the through holes are closer to the input diopter than the output diopter.
    [0005]
    5. Device according to any one of the preceding claims, wherein the through holes are substantially at the same distance along the length of the light guide of the input diopter.
    [0006]
    6. Device according to any one of the preceding claims, comprising at least three through holes, at least two of which are substantially at the same distance along the length of the light guide of the input diopter.
    [0007]
    7. Device according to any one of the preceding claims, wherein the light guide has a substantially rectangular parallelepiped shape.
    [0008]
    8. Device according to any one of the preceding claims, wherein the thickness of the light guide is greater than or equal to 0.6 mm and less than or equal to 4 mm.
    [0009]
    9. Device according to any one of the preceding claims wherein the through holes through the light guide according to the thickness of said light guide.
    [0010]
    10. Device according to any one of the preceding claims, wherein the input diopter comprises at least one dispersive element of light (21).
    [0011]
    11. Device according to any one of the preceding claims, wherein the output dioptre comprises at least one dispersive element of light (22).
    [0012]
    12. Device according to one of claims 8 or 9, wherein the dispersive element of light is in the form of at least one semicylindrical lens (21).
    [0013]
    13. Apparatus according to any one of the preceding claims, wherein the light source 15 comprises at least one light emitting diode disposed opposite the input diopter.
    [0014]
    14. Indicator light intended in particular for a human machine interface of a motor vehicle comprising a light device according to any one of the preceding claims.
    [0015]
    15. Human machine interface of a motor vehicle comprising a light device according to one of claims 1 to 13. 25
    [0016]
    16. A motor vehicle control panel comprising a man-machine interface according to claim 15.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3015005A1|2015-06-19|LIGHT DEVICE
    EP3098500B1|2018-06-13|Lighting device, in particular for a motor vehicle, and lighting housing comprising such a device
    EP3165811A1|2017-05-10|Lighting device with two functions and three-dimensional effect, in particular for a motor vehicle, and light provided with such a lighting device
    WO2019158889A1|2019-08-22|Signaling device for a motor vehicle
    EP2738448A2|2014-06-04|Illuminating and/or signalling device, more particularly for automobile vehicle
    EP2651694B1|2016-05-04|Indicator light
    EP2711610A1|2014-03-26|Lighting and/or signalling device, in particular for a motor vehicle
    EP3014175B1|2019-10-09|Lighting device
    EP2900520A1|2015-08-05|Lighting device, in particular for a motor vehicle
    EP2824385B1|2017-03-22|Two-colour lighting and/or signalling device comprising a light guide, in particular for a motor vehicle
    FR3047295A1|2017-08-04|SEGMENTED LUMINOUS DEVICE FOR A MOTOR VEHICLE USING MULTIPLE LIGHT GUIDES
    EP2803903A1|2014-11-19|Lighting and/or signalling device, in particular for a motor vehicle
    FR3041741A1|2017-03-31|OPTICAL DEVICE AND SIGNALING AND / OR LIGHTING SYSTEM FOR A MOTOR VEHICLE
    FR3009065A1|2015-01-30|OPTICAL DEVICE FOR A MOTOR VEHICLE
    FR3055430A1|2018-03-02|LIGHTING AND / OR SIGNALING DEVICE, IN PARTICULAR FOR A MOTOR VEHICLE
    EP3025094B1|2018-05-02|Lighting device
    WO2016166193A2|2016-10-20|Luminous signalling or lighting device creating a depth effect
    EP3467375A1|2019-04-10|Thin light-emitting device with homogeneous lighting
    EP3191345B1|2020-10-28|Lighting device
    EP2711618A1|2014-03-26|Lighting device and/or signalling device for vehicle headlamp
    FR3006745A1|2014-12-12|BI-COLOR LIGHTING AND / OR SIGNALING DEVICE, IN PARTICULAR FOR A MOTOR VEHICLE
    FR2995061A1|2014-03-07|LUMINOUS DEVICE, IN PARTICULAR LIGHTING AND / OR SIGNALING DEVICE FOR A MOTOR VEHICLE
    EP2808201A1|2014-12-03|Lighting and/or signalling device and optical unit for motor vehicle including said device
    FR3048057A1|2017-08-25|HOMOGENEOUS PROGRESSIVE ILLUMINATION LUMINOUS DEVICE FOR A MOTOR VEHICLE
    FR3062486A1|2018-08-03|LIGHT GUIDE AND OPTICAL ASSEMBLY COMPRISING SUCH A LIGHT GUIDE
    同族专利:
    公开号 | 公开日
    WO2015086925A2|2015-06-18|
    US10295722B2|2019-05-21|
    JP2016540359A|2016-12-22|
    US20170036598A1|2017-02-09|
    FR3015005B1|2018-12-07|
    WO2015086925A3|2016-04-14|
    JP6599331B2|2019-10-30|
    CN106458027A|2017-02-22|
    EP3079938A2|2016-10-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20070274100A1|2006-05-24|2007-11-29|Tsinghua University|Light guide plate having high brightness and uniformity of light emission and backlight module adopting same|
    DE102008006896A1|2008-01-31|2009-08-06|Heße, Andreas, Dr.|Light guide, has integrated prisms that are hollow or have optical medium with optical density different from that of light guide, and are finished as geometrical figure and provided transverse to light coupling direction|
    EP2264493A1|2009-06-16|2010-12-22|Gerhard Dipl.-Phys. Karl|Lightguide with reflectors for even area illumination|
    FR2968745A1|2010-12-14|2012-06-15|Valeo Systemes Thermiques|LIGHT|
    JPH0455002U|1990-09-18|1992-05-12|
    JPH11284803A|1998-03-27|1999-10-15|Citizen Electronics Co Ltd|Linear light source unit|
    US6874926B2|2001-11-26|2005-04-05|Nokia Corporation|Illumination system for an electronic device|
    JP2004241237A|2003-02-05|2004-08-26|Sharp Corp|Surface lighting system and liquid crystal display device using same|
    JP2005071798A|2003-08-25|2005-03-17|Seiko Epson Corp|Lighting system, electro-optical device, and electronic apparatus|
    US20060285356A1|2005-06-21|2006-12-21|K-Bridge Electronics Co., Ltd.|Side-edge backlight module dimming pack|
    EP2104873B1|2006-12-29|2020-03-11|Modilis Holdings LLC|Incoupling structure for lighting applications|
    FR2920547B1|2007-08-28|2010-08-27|Valeo Systemes Thermiques|REAR LIGHTING DISPLAY DEVICE WITH PARTICULAR UNIFORM EXTERNAL APPEARANCE|
    FR2956468B1|2010-02-15|2015-07-10|Valeo Vision|OPTICAL DEVICE, IN PARTICULAR FOR MOTOR VEHICLE|
    KR101261462B1|2010-08-26|2013-05-10|엘지이노텍 주식회사|backlight unit|
    JP5569807B2|2010-11-04|2014-08-13|スタンレー電気株式会社|Lamp|
    US8870434B2|2011-09-12|2014-10-28|Skc Haas Display Films Co., Ltd.|Asymmetric serrated edge light guide film having circular base segments|
    JP2013101901A|2011-10-20|2013-05-23|Toshiba Corp|Flat lamp device|
    JP5853739B2|2012-02-03|2016-02-09|オムロン株式会社|Collimated light source and surface light source device|
    US9103955B2|2012-03-12|2015-08-11|Shenzhen China Start Optoelectronics Technology Co., Ltd.|Backlight module with light guide plate with light sources, and liquid crystal display apparatus with such module|
    CN102661527B|2012-03-29|2014-03-26|深圳市华星光电技术有限公司|Backlight module and liquid crystal display|
    DE102013212352A1|2013-06-26|2014-12-31|Automotive Lighting Reutlingen Gmbh|Automotive lighting device with a Einkoppeloptik and a transport and forming optics|FR3044744B1|2015-12-08|2022-02-25|Peugeot Citroen Automobiles Sa|ILLUMINATING DEVICE WITH LIGHT GUIDE COMPRISING POLYGONAL HOLES FOR REFLECTING PHOTONS|
    FR3048784B1|2016-03-10|2018-04-13|Valeo Vision|OPTICAL GUIDE WITH OPTICAL MEANS OF DISPERSION OF LIGHT|
    DE202016103837U1|2016-07-15|2017-10-18|Zumtobel Lighting Gmbh|Luminaire with passage openings|
    JP2019037738A|2017-08-25|2019-03-14|Toto株式会社|Bathtub water discharge device|
    US10705289B2|2018-06-14|2020-07-07|Sharp Kabushiki Kaisha|Lighting device and display device|
    DE102019106221A1|2019-03-12|2020-09-17|HELLA GmbH & Co. KGaA|Lighting device for vehicles|
    法律状态:
    2015-12-31| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-29| PLFP| Fee payment|Year of fee payment: 4 |
    2018-01-02| PLFP| Fee payment|Year of fee payment: 5 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 7 |
    2020-12-31| PLFP| Fee payment|Year of fee payment: 8 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1302927|2013-12-13|
    FR1302927A|FR3015005B1|2013-12-13|2013-12-13|LIGHT DEVICE|FR1302927A| FR3015005B1|2013-12-13|2013-12-13|LIGHT DEVICE|
    US15/102,477| US10295722B2|2013-12-13|2014-12-12|Lighting device|
    JP2016538698A| JP6599331B2|2013-12-13|2014-12-12|Lighting device|
    CN201480073102.4A| CN106458027A|2013-12-13|2014-12-12|Lighting device|
    EP14821692.2A| EP3079938A2|2013-12-13|2014-12-12|Lighting device|
    PCT/FR2014/000277| WO2015086925A2|2013-12-13|2014-12-12|Lighting device|
    [返回顶部]