EP3176494A1 - Module d'éclairage ayant deux guides de lumière - Google Patents

Module d'éclairage ayant deux guides de lumière Download PDF

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Publication number
EP3176494A1
EP3176494A1 EP16200635.7A EP16200635A EP3176494A1 EP 3176494 A1 EP3176494 A1 EP 3176494A1 EP 16200635 A EP16200635 A EP 16200635A EP 3176494 A1 EP3176494 A1 EP 3176494A1
Authority
EP
European Patent Office
Prior art keywords
light
light guide
luminaire module
exit surface
narrow side
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.)
Granted
Application number
EP16200635.7A
Other languages
German (de)
English (en)
Other versions
EP3176494B1 (fr
Inventor
Thomas Kleiner
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.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Automotive Lighting Reutlingen GmbH
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 Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP3176494A1 publication Critical patent/EP3176494A1/fr
Application granted granted Critical
Publication of EP3176494B1 publication Critical patent/EP3176494B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/251—Light guides the light guides being used to transmit light from remote light sources

Definitions

  • the second light guide is also referred to below as thick-wall optics.
  • a luminaire module is here assumed to be known per se and serves to generate a signal light distribution such as a daytime running light distribution.
  • the second light guide has in one embodiment mainly the function a design element.
  • the lying between the narrow sides of the thick-walled broadsides serve on the one hand as transport surfaces on which experiences the light propagating from the light entrance surface of the thick-walled optics to the light exit surface internal total internal reflections.
  • At least one of the broadsides is often visible from the outside. This is especially true for headlights, which also accommodate other light modules and therefore have a large light exit opening, which is often covered by a smooth cover.
  • headlights which also accommodate other light modules and therefore have a large light exit opening, which is often covered by a smooth cover.
  • the broadsheets often their appearance has a higher priority than an optimization of these areas in terms of lighting technology. If, for example, matting of the broad sides is provided for design reasons, this is at the expense of efficiency and, under certain circumstances, also at the expense of the homogeneity of the appearance of the light exit surface, because the conditions prevailing in the interior of the second light guide on the frosted surface are internal Total reflections worsen.
  • the transparent lens covers the broadsides and is therefore more visible to the viewer than the broadside of the thick-walled optical system 14 lying behind the transparent lens for the viewer.
  • the transparent lens can, for example, have a matting for reasons of design.
  • the lying for the viewer behind the transparent cover broadside can be optimized without regard to design requirements in lighting terms. In particular, it can be mirror-smooth, in order to allow lossless internal total reflections. Since both the lens and the thick-walled optics are transparent, the appearance of the luminaire module according to the invention is similar to the appearance of a thick-walled optics without a lens.
  • a preferred embodiment is characterized in that the lens has a side surface facing away from the broad side of the second light guide, which is clear, frosted or provided with surface structures.
  • the second light guide has a monotonically increasing cross section from its light entry surface to its light exit surface.
  • a free-form surface or a parabolic shape is also conceivable.
  • the broad sides of the second light guide are mirror-smooth.
  • a further preferred embodiment is characterized in that the light exit surface of the second light guide smooth or stepped or provided with scattering, pillow-shaped optics.
  • the light entry surface of the second light guide is smooth or stepped or provided with scattering, pillow-shaped optics.
  • an elongated rear side of the light guide opposite the light exit surface of the light guide has light-deflecting structures which are prism-shaped.
  • a further preferred embodiment is characterized in that the elongate first light guide is fed with light from its two end faces.
  • the light coupled in via the one end face has a different color than the light coupled in via the other end face, so that two light functions can be fulfilled with one light guide.
  • the two light disks merge into one another at one end or at both lateral ends of the second light guide, which serve neither as a light entry surface nor as a light exit surface, so that the second light guide with the exception of its light entrance surface and its light exit surface of a light disc curved in space is shrouded.
  • FIG. 1 a luminaire module 10 for a motor vehicle lighting device, which has an elongate first optical waveguide 12, a second optical waveguide 14 and two light disks 16 and 18.
  • the FIG. 2 shows the subject of the FIG. 1 in a lateral cross-section.
  • the x-direction 10 indicates a main emission direction of the luminaire module.
  • the x direction is, for example, parallel to a longitudinal axis of the vehicle.
  • the y-direction is parallel to a transverse axis of the vehicle, and the z-direction is parallel to a vertical axis of the vehicle and faces upward. But this is only an example and is not intended to limit the invention.
  • the thick-walled optics that is to say the second optical waveguide 14 has, as in particular FIG. 2 can be seen, one of its light entry surface 22 to its light exit surface 24 monotonically increasing cross-section. Also, a parabolic cross-section or a free-form surface is possible. Due to the increasing in the propagation direction of the light in the second light guide cross-section of the second light guide results in a parallelization of the light as a result of total internal reflections. This contributes to a desired homogeneity of the illumination of its light exit surface 24 taking place from the interior of the second optical waveguide 14. In addition, this form of the opening angle of the light increases, which undergoes internal total reflections within the second light guide. This increases the efficiency of the light guide, ie the ratio of specifically coupled light to the coupled light.
  • the lateral surfaces that is, the broad sides 26, 28 of the second light guide 14, are preferably mirror-smooth, which allows virtually lossless internal total reflections. This photometric effect of virtually lossless total internal reflection contributes to a high level of efficiency.
  • the light exit surface 24 of the thick-walled optical system 14 is, depending on lighting and design requirements, smooth or stepped or provided with scattering, pillow-shaped optics. This applies analogously to the light entry surface 22 of the thick-walled optical system 14, which accordingly can also be smooth or stepped or provided with scattering, pillow-shaped optics. Steps are preferably provided from a sweep angle of 30 °. A sweep is understood to mean that the light exit surface (in the case of a stepped light guide an envelope) of the light exit surface forms an angle with the transverse axis of the vehicle. f
  • first light guide 12 propagates from a light source, not shown in the figure, in an end face 12.1 of the first light guide 12 substantially along the first light guide 12.
  • the light experiences at a smooth light exit surface 20 and smooth side walls 12.2 of the first light guide 12 internal total reflections.
  • One of the light exit surface 20 of the first light guide 12 opposite, elongated rear side 12.2 of the first light guide 12 has light-deflecting structures, which are, for example prismatic.
  • These structures deflect light impinging on them so steeply toward the light exit surface 20 of the elongate first light guide 12 that the deflected light is distributed over the elongated light exit surface 20 of the first light guide 12 exits and on the light exit surface 20 of the first light guide 12 opposite light entrance surface 22 of the second light guide 14 enters the second light guide 14.
  • two light colors are coupled into the light guide 12 via a single end face of the elongated first light guide 12.
  • the light coupled in via the one end side can have the same color as the light coupled in via the other end side.
  • the light coupled in via the one end face may have a different color than the light coupled in via the other end face. In this way, for example, a flashing light function using yellow or yellow-red light can be realized with the same arrangement of first light guide, thick wall optic and lens as a daytime running light function using white light or position light function.
  • the lamp module 10 has a second transparent lens 18 arranged below the thick-wall optical system 24.
  • the two light disks 16, 18 can also merge into one another at one end or at both lateral ends of the thick-wall optical system 14, that is to say on the two sides of the thick-wall optical system 14 which serve neither as a light entry surface 22 nor as a light exit surface 24 in the exemplary embodiment shown, so that the thick-wall optical system 14 with the exception of its light entry surface 22 and its light exit surface 24 is enveloped by a curved in space lens.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)
EP16200635.7A 2015-12-02 2016-11-25 Module d'éclairage ayant deux guides de lumière Active EP3176494B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015008368.4U DE202015008368U1 (de) 2015-12-02 2015-12-02 Leuchtenmodul mit einer Dickwandoptik

Publications (2)

Publication Number Publication Date
EP3176494A1 true EP3176494A1 (fr) 2017-06-07
EP3176494B1 EP3176494B1 (fr) 2022-04-20

Family

ID=57406107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16200635.7A Active EP3176494B1 (fr) 2015-12-02 2016-11-25 Module d'éclairage ayant deux guides de lumière

Country Status (2)

Country Link
EP (1) EP3176494B1 (fr)
DE (1) DE202015008368U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980773A (zh) * 2018-10-19 2018-12-11 华域视觉科技(上海)有限公司 多角度导光体及用于车灯灯具

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207262329U (zh) 2017-04-27 2018-04-20 法雷奥照明湖北技术中心有限公司 光束调整装置与车灯组件
EP3779272A1 (fr) * 2019-08-14 2021-02-17 ZKW Group GmbH Dispositif d'éclairage pour un phare de véhicule automobile
TWI761275B (zh) * 2021-08-05 2022-04-11 坦德科技股份有限公司 車用信號燈具結構以及車用日行燈
FR3145399A1 (fr) * 2023-01-31 2024-08-02 Valeo Vision Guide de lumière comme source de lumière secondaire

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668913A (en) * 1994-10-19 1997-09-16 Tai; Ping-Kaung Light expanding system for producing a linear or planar light beam from a point-like light source
DE102006032373A1 (de) * 2006-07-13 2008-01-17 Automotive Lighting Reutlingen Gmbh Leuchtenanordnung für einen Kraftfahrzeugscheinwerfer oder eine Kraftfahrzeugheckleuchte
US20090251917A1 (en) * 2006-08-01 2009-10-08 Wollner Mark R Illumination device
EP2527722A2 (fr) * 2011-05-27 2012-11-28 Automotive Lighting Reutlingen GmbH Dispositif d'éclairage pour un véhicule automobile
JP2013191406A (ja) * 2012-03-14 2013-09-26 Koito Mfg Co Ltd 車両用灯具
US20140036522A1 (en) * 2012-08-01 2014-02-06 Koito Manufacturing Co., Ltd. Vehicular lamp
JP2014235819A (ja) * 2013-05-31 2014-12-15 市光工業株式会社 車両用灯具

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668913A (en) * 1994-10-19 1997-09-16 Tai; Ping-Kaung Light expanding system for producing a linear or planar light beam from a point-like light source
DE102006032373A1 (de) * 2006-07-13 2008-01-17 Automotive Lighting Reutlingen Gmbh Leuchtenanordnung für einen Kraftfahrzeugscheinwerfer oder eine Kraftfahrzeugheckleuchte
US20090251917A1 (en) * 2006-08-01 2009-10-08 Wollner Mark R Illumination device
EP2527722A2 (fr) * 2011-05-27 2012-11-28 Automotive Lighting Reutlingen GmbH Dispositif d'éclairage pour un véhicule automobile
JP2013191406A (ja) * 2012-03-14 2013-09-26 Koito Mfg Co Ltd 車両用灯具
US20140036522A1 (en) * 2012-08-01 2014-02-06 Koito Manufacturing Co., Ltd. Vehicular lamp
JP2014235819A (ja) * 2013-05-31 2014-12-15 市光工業株式会社 車両用灯具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980773A (zh) * 2018-10-19 2018-12-11 华域视觉科技(上海)有限公司 多角度导光体及用于车灯灯具

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Publication number Publication date
EP3176494B1 (fr) 2022-04-20
DE202015008368U1 (de) 2017-03-03

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