EP3079938A2 - Beleuchtungsvorrichtung - Google Patents

Beleuchtungsvorrichtung

Info

Publication number
EP3079938A2
EP3079938A2 EP14821692.2A EP14821692A EP3079938A2 EP 3079938 A2 EP3079938 A2 EP 3079938A2 EP 14821692 A EP14821692 A EP 14821692A EP 3079938 A2 EP3079938 A2 EP 3079938A2
Authority
EP
European Patent Office
Prior art keywords
light
light guide
diopter
holes
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14821692.2A
Other languages
English (en)
French (fr)
Inventor
Stéphane Bombard
Maryline Thorailler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP3079938A2 publication Critical patent/EP3079938A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/003—Lens or lenticular sheet or layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/50—Instruments characterised by their means of attachment to or integration in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/10—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards
    • B60Q3/14—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards lighting through the surface to be illuminated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/60—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/62—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
    • B60Q3/64—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/332—Light emitting diodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/334—Projection means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/336—Light guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • B60Q3/78—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for generating luminous strips, e.g. for marking trim component edges

Definitions

  • the present invention relates to the field of lighting and particularly 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.
  • 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.
  • 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
  • the light guide further comprises at least two through holes disposed between the input diopter and the output diopter.
  • 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.
  • 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;
  • the through holes are closer to the input diopter than to the exit diopter;
  • the through holes are substantially at the same distance along the length of the light guide of the input diopter;
  • 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 rectangular parallelepiped 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.
  • 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 semicylindrical lens; and or
  • the light source comprises at least one light-emitting diode arranged facing the input diopter.
  • 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.
  • FIG. 1 schematically illustrating a light device according to a first embodiment of the invention
  • the invention relates to a light device 10 comprising a light source 12 and a light guide 14.
  • the light guide 14 is monobloc 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.
  • the light guide 14 may have a substantially rectangular parallelepiped shape.
  • 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 output diopter 22.
  • the input diopter 20 is configured to let in the light guide 14 the light emitted by the light source 12.
  • the light source 12 is arranged facing the input diopter 20.
  • the light source 12 advantageously comprises at least one light-emitting diode arranged facing the input diopter.
  • the light-emitting diode may be replaced by an equivalent light source, of the OLED, AMOLED or FOLED type.
  • the input diopter 20 may comprise dispersive light elements 21.
  • These light-dispersive elements may be in the form of a hemicylindrical lens.
  • 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 exit diopter 22 is configured to let the light out of the light guide 14.
  • the output diopter 22 may comprise dispersive light 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.
  • the light guide 14 comprises at least two through-holes 3 1 disposed between the input diopter 20 and the exit diopter 22.
  • the through holes pass through the light guide according to the thickness of said light guide.
  • the thickness of the light guide corresponds to the third dimension of said light guide, the other two being the length and the width.
  • the presence of through holes in the light guide of the light device according to the invention makes it possible to obtain a uniform illumination at the level of the output diopter 22.
  • At least one of the through-holes may have a V-shape.
  • this shape for the through holes provides good dispersion of the light in the light guide, thus increasing the homogeneity of the illumination at level of the exit diopter.
  • V-shaped through-holes are oriented towards the input diopter to further increase the dispersive effect of said through holes.
  • the through holes may have different shapes of the V, for example a cylindrical or semi-cylindrical shape, knowing that the holes are preferably configured so as not to form a diopter that is parallel to the diopter input.
  • the through holes are arranged so as to be closer to the input diopter than to the diopter of the light. exit.
  • the through holes are disposed in the first quarter of the light guide along the length starting from the input diopter. 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.
  • the through holes are not contiguous to each other.
  • 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.
  • 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.
  • length of the light guide is meant the largest dimension of the light guide.
  • 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.
  • 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.
  • the incoming light beam beam is dispersed by the dispersive elements 21 arranged on said light beam. entrance diopter 20.
  • 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. All the light rays coming out of the light guide at the exit diopter 22 are dispersed by the dispersive elements 23.
  • the through holes of the light guide of the light device according to the invention allow spreading of the beam of light rays 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.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Instrument Panels (AREA)
EP14821692.2A 2013-12-13 2014-12-12 Beleuchtungsvorrichtung Withdrawn EP3079938A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1302927A FR3015005B1 (fr) 2013-12-13 2013-12-13 Dispositif lumineux
PCT/FR2014/000277 WO2015086925A2 (fr) 2013-12-13 2014-12-12 Dispositif lumineux

Publications (1)

Publication Number Publication Date
EP3079938A2 true EP3079938A2 (de) 2016-10-19

Family

ID=50097758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14821692.2A Withdrawn EP3079938A2 (de) 2013-12-13 2014-12-12 Beleuchtungsvorrichtung

Country Status (6)

Country Link
US (1) US10295722B2 (de)
EP (1) EP3079938A2 (de)
JP (1) JP6599331B2 (de)
CN (1) CN106458027A (de)
FR (1) FR3015005B1 (de)
WO (1) WO2015086925A2 (de)

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FR3044744B1 (fr) * 2015-12-08 2022-02-25 Peugeot Citroen Automobiles Sa Dispositif d’eclairage a guide de lumiere comprenant des trous polygonaux pour reflechir des photons
FR3048784B1 (fr) * 2016-03-10 2018-04-13 Valeo Vision Guide optique avec moyens optiques de dispersion de la lumiere
DE202016103837U1 (de) * 2016-07-15 2017-10-18 Zumtobel Lighting Gmbh Leuchte mit Durchgangsöffnungen
JP7057880B2 (ja) * 2017-08-25 2022-04-21 Toto株式会社 浴槽用吐水装置
US10705289B2 (en) * 2018-06-14 2020-07-07 Sharp Kabushiki Kaisha Lighting device and display device
DE102019106221A1 (de) * 2019-03-12 2020-09-17 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
TW202326256A (zh) * 2021-12-28 2023-07-01 華碩電腦股份有限公司 背光模組

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Also Published As

Publication number Publication date
CN106458027A (zh) 2017-02-22
WO2015086925A2 (fr) 2015-06-18
US20170036598A1 (en) 2017-02-09
FR3015005A1 (fr) 2015-06-19
WO2015086925A3 (fr) 2016-04-14
JP2016540359A (ja) 2016-12-22
FR3015005B1 (fr) 2018-12-07
JP6599331B2 (ja) 2019-10-30
US10295722B2 (en) 2019-05-21

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