EP2995849A1 - Leuchtmodul, das eine organische elektrolumineszenzdiode umfasst - Google Patents

Leuchtmodul, das eine organische elektrolumineszenzdiode umfasst Download PDF

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Publication number
EP2995849A1
EP2995849A1 EP15183965.1A EP15183965A EP2995849A1 EP 2995849 A1 EP2995849 A1 EP 2995849A1 EP 15183965 A EP15183965 A EP 15183965A EP 2995849 A1 EP2995849 A1 EP 2995849A1
Authority
EP
European Patent Office
Prior art keywords
diode
light
wall
support
mounting
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Withdrawn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
EP15183965.1A
Other languages
English (en)
French (fr)
Inventor
Hui Jin
David Hue
Antonio Camero
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 Vision SAS
Original Assignee
Valeo Vision 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 Vision SAS filed Critical Valeo Vision SAS
Publication of EP2995849A1 publication Critical patent/EP2995849A1/de
Withdrawn legal-status Critical Current

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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
    • F21S43/10—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]
    • F21S43/145—Surface emitters, e.g. organic light emitting diodes [OLED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/155—Surface emitters, e.g. organic light emitting diodes [OLED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • 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
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the invention relates to the technical fields of lighting and signaling of motor vehicles, and is particularly interested in light modules comprising organic light-emitting diodes also known by the acronym Anglosaxon OLED (Organic Light Emitting Diode).
  • Anglosaxon OLED Organic Light Emitting Diode
  • An organic light-emitting diode is generally in the form of an anode and a cathode between which are encapsulated one or more layers of organic material containing for example materials such as polyanilines or polyfluorenes are disposed.
  • the existing systems use supports comprising a compartment, a connecting portion of the diode being inserted into this compartment and then locked in the support by means of a piece of additional fastening such as a bar clamping the connection portion.
  • This type of integration therefore requires a part external to the support, which involves both an additional cost and an additional step during the method of mounting the diode in the module.
  • the method of attachment retained in the known solutions is based on maintaining the diode in the support by clamping, that is to say by friction of the outer part against the diode.
  • the light modules are subject to disturbances such as vibrations or shocks.
  • the outer part can therefore also be subjected to these disturbances, which would therefore interfere with the fixing. Therefore, the retention in position of the diode in the light module is not guaranteed, which can affect the aesthetics of the module, or even the operation of the module when the diode is associated with optical elements.
  • the invention aims to provide a technical solution to this need.
  • the light module according to the invention comprises a support having at least one mounting hole and at least one organic light-emitting diode having a first light-emitting portion and a mounting portion for insertion into the mounting hole.
  • the organic electroluminescent diode comprises at least a first diode fixing means intended to cooperate with at least one first means of complementary attachment of the support, said diode fixing means being arranged on at least one wall of the mounting part.
  • the module in the module according to the invention, it is the light-emitting diode itself which comprises the means of attachment to the support, which makes it possible to dispense with an external part.
  • the diode being directly attached to the support, it reduces the risk that any vibrations and shocks transmitted from the module to the support disrupt the fixing.
  • the support may comprise a body on which is mounted a hollow base forming the orifice.
  • the mounting portion of the light emitting diode and the base of the support can form a standard pair of cap / socket, that is to say whose characteristics comply with a standardized standard. It is thus possible to give the first light-emitting part a free form.
  • the body may have a hole opposite the base, so that the orifice passes through the entire support.
  • the support may comprise two bases, in particular mounted on either side of the body, each base forming a mounting orifice of a light-emitting diode of a module according to the invention.
  • mounting part is meant a part of the light-emitting diode devoid of optical role, that is to say, emitting no light.
  • the first light-emitting portion has an area greater than that of the mounting portion.
  • the emitting part of the organic light-emitting diode is delimited by two walls facing each other, between which is disposed at least one layer of organic material capable of emitting light when the diode is electrically powered.
  • at least one of these walls, or even each wall, is able to let in light.
  • said wall capable of passing light is made of a transparent or translucent material, in particular glass or plastic.
  • said light-passable wall is planar at least at the first light-emitting portion.
  • said layer of organic material extends over a surface less than or equal to that of said wall capable of allowing light to pass.
  • all of said layer of organic material may be framed by the wall capable of passing light.
  • the walls form a sealed casing enclosing said layer of organic material.
  • At least a first wall of the two walls defining the emitter portion extends from an upper end of the organic light-emitting diode to a lower end of the light-emitting diode, so as to also form said wall of the mounting part.
  • said first wall and the wall of the mounting part form a single piece, for example material.
  • the wall of the mounting portion may be overmoulded to said first wall.
  • the first fixing means of the diode is formed by deformation of a first surface of said wall of the mounting part.
  • the first surface of the wall of the mounting portion may be generally planar, the first fixing means of the diode being a relief of this first surface.
  • one of the first means for fixing the diode and the support is able to deform elastically, the other of the first means of fixing the diode and the support being rigid.
  • said deformation can form a male snap-fitting means of the mounting part, the complementary means for fixing the support forming a female latching means.
  • the first fixing means of the diode is formed by a protrusion, for example flexible, of the first surface projecting from said wall of the mounting part.
  • the protrusion can be achieved by adding material to the first surface, so for example locally to modify the thickness of said wall of the mounting portion at said level.
  • the first diode attachment means is formed by a ripple of said wall of the mounting portion. In this case, the thickness of the wall can remain generally constant along the mounting portion. If desired, the protuberance or ripple may form a projection followed by a gentle slope toward the lower end of the mounting portion.
  • the first complementary means for fixing the support may in this case be formed by a hook, for example a rigid hook, extending into the orifice.
  • said hook may extend from an edge of the orifice.
  • said hook may comprise a collar extending on an inner surface of the orifice.
  • said deformation forms a female latching means of the mounting portion and the complementary means for fixing the support forms a male latching means.
  • the first diode attachment means may be formed by a recess in said wall of the mounting portion.
  • the recess may be made by removing material from said wall of the mounting portion.
  • the recess may be formed by a hole passing through the mounting portion.
  • the first complementary means for fixing the support may in this case be formed by a flexible tongue extending into the orifice. Alternatively, it may be a flexible collar or a flexible hook.
  • the first means of fixing the diode may be formed by a recess followed by an outgrowth.
  • the organic electroluminescent diode comprises a second fixing means intended to cooperate with a second means of complementary attachment of the support.
  • the second of the two walls defining the transmitting portion extends from an upper end of the organic light-emitting diode to an upper end of the mounting portion.
  • the mounting part can be formed solely by said first wall of the emitting part.
  • the other wall of the emitting part is attached to said first wall only at the emitting part.
  • said second diode attachment means is disposed on said wall of the mounting portion.
  • the second diode attachment means is formed by a deformation of a second surface of said wall of the mounting portion opposite the first surface.
  • said wall of the mounting portion has an extra thickness at the mounting portion, particularly along the entire length of the mounting portion. This improves the mechanical strength of the organic light-emitting diode on its support.
  • the light-emitting diode comprises at least one electrical track intended for the electrical power supply of the diode, this electrical track being disposed on said wall of the mounting part.
  • the support comprises an electrical connector intended to cooperate with said electrical track.
  • the connector may for example be a metal spring blade disposed in the orifice.
  • the second of the two walls defining the emitter portion extends from an upper end of the organic light-emitting diode and beyond an upper end of the mounting portion, so as to form another wall of the mounting part. If desired, the second wall of the emitter portion extends to said lower end of the diode. Alternatively, the second wall of the transmitting portion extends between the lower ends of the diode and upper of the mounting portion. This releases a space below said second wall of the emitting part, for example to have an electric supply track. Where appropriate, said second diode attachment means is disposed on said other wall of the mounting portion.
  • the second diode attachment means may be formed by deforming a surface of said other wall of the mounting portion opposite the first surface of said wall of the mounting portion.
  • the position of the second diode attachment means on said other wall of the mounting portion may be offset from the position of the first diode attachment means on said wall of the mounting portion. It is thus possible to perform a keying function of the mounting of the organic light-emitting diode on its support.
  • the subject of the invention is also an organic light-emitting diode for a light module according to the invention, the organic light-emitting diode comprising a first light-emitting part and a mounting part intended to be inserted into a mounting hole, characterized in that the diode comprises at least a first means for fixing the diode intended to cooperate with a first complementary fixing means of said support, said diode fixing means being disposed on at least one wall of the mounting part
  • FIG 1 an organic light-emitting diode OLED 1 and in figure 2 a light module 10 comprising a diode support 11 in which said OLED 1 is mounted.
  • the support 11 comprises a body 12 on which is mounted a hollow base forming an orifice 13 in which said OLED 1 is mounted.
  • OLED 1 comprises a light emitting portion 2 delimited by two flat walls facing each other 21 and 22. Between walls 21 and 22 is disposed at least one layer of organic material 23 capable of emitting light when the diode is electrically powered.
  • the OLED 1 comprises for this purpose electrodes, not shown, for guiding the electric current in the layer of organic material 23.
  • Each wall 21 and 22 is made of a transparent or translucent material, in particular glass or plastic, so as to allow light emitted by the layer 23 to pass through.
  • figure 1 that said layer of organic material 23 extends on a surface less than or equal to that of the walls 21 and 22 so as to be completely framed by these walls 21 and 22.
  • the walls 21 and 22 thus form a sealed casing enclosing said layer of organic material 23.
  • OLED 1 further comprises a mounting portion 3 intended to be inserted into the orifice 13 of the support 11.
  • Each wall 21 and 22 delimiting the emitting portion extends from an upper end of the OLED 1 to a lower end of the OLED 1, so as to form each a wall 31 and 32 of the mounting portion 3.
  • the associated walls 21 and 31, respectively 22 and 32, of the emitting portion 2 and of the part 3 each form a single piece from material.
  • the light-emitting portion 2 has an area greater than that of the mounting portion 3.
  • the OLED 1 comprises first 41 and second 42 fixing means, respectively disposed on the walls 31 and 32 of the mounting portion.
  • Each fastening means 41, 42 is formed by a deformation of a surface of the wall 31, 32 of the mounting portion 3 on which it is disposed.
  • the two means 41 and 42 are structurally identical. Subsequently, only the fastening means 41 of the wall 31 will be described.
  • the fastening means 41 is formed by a recess in the wall 31 of the mounting part 3, made by a withdrawal of material.
  • the recess is followed by a protrusion projecting from the wall 31, made by adding material.
  • the protrusion comprises a projection followed by a gentle slope towards the lower end of the mounting portion 3.
  • fastening means 41 and 42 are intended to cooperate with first and second complementary fastening means 51 and 52 of the support 11.
  • the complementary fastening means 51 and 52 are tabs extending into the orifice 13 and adapted to elastically deform, so that the fastening means 41 and 42 form female latching means of the mounting portion 3 and the complementary fastening means 51 and 52 of the support 11 form male latching means.
  • each tongue 51 and 52 comes into contact with the gentle slope of the protrusion by deforming elastically until it meets the projection so as to fit into the recess .
  • the module 10 it is the light-emitting diode 2 itself which comprises the fixing means 41, 42 to the support 11, which makes it possible to dispense with an external part.
  • the diode 2 is directly attached to the support 11, it reduces the risk that any vibrations and shocks transmitted from the module to the support disrupt the fixing.
  • the mounting portion 3 of the light emitting diode 2 and the base of the support form a pair of standard cap / socket. It is thus possible to give to the first light-emitting part a free form.
  • OLED 2 further comprises an electrical track 6 for its power supply.
  • This electrical track 6 is disposed on the wall 32 of the mounting portion.
  • the support 11 comprises an electrical connector 7 made in the form of a metal spring blade 7 disposed in the orifice 13 and intended to cooperate with said electrical track.
  • the connector 7 is connected to tracks 8 arranged on the support 11.
  • a module 110 comprising a support 111 and an OLED 101 according to a second embodiment.
  • the support 111 is in all respects identical to the support 11 of the mode of the figure 2 .
  • the second wall 122 defining the emitter portion of the OLED 101 extends from an upper end of the OLED to an upper end of the mounting portion.
  • the mounting portion is thus formed only by a single wall 131, formed by the first wall 121 of the emitting part.
  • the second wall 122 of the emitting part is attached to the first wall 121 only at the emitting part, so as to completely encapsulate the layer of organic material 123.
  • first and second attachment means 141, 142 of the diode 101 are each disposed on opposite surfaces of the wall 131 of the mounting portion.
  • These fixing means 141 and 142 are formed by deformations similar to the deformations of the embodiment of the figure 1 .
  • said wall 131 of the mounting portion has an extra thickness 143 at the mounting portion, so as to improve the mechanical strength of the diode 101 on its support 111.
  • FIG 4 a module 200 comprising a support 211 and two OLEDs 201 according to a third embodiment.
  • OLEDs 201 are similar in all respects to OLED 1 of the embodiment of the figure 1 .
  • the support 211 comprises a body 212 and two bases, in particular mounted on either side of the body 212, each base forming a mounting hole 213 of an OLED 201, similar to the mounting hole 13 of the embodiment of FIG. the figure 2 .
EP15183965.1A 2014-09-15 2015-09-04 Leuchtmodul, das eine organische elektrolumineszenzdiode umfasst Withdrawn EP2995849A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1458682A FR3025861B1 (fr) 2014-09-15 2014-09-15 Module lumineux comportant une diode electroluminescente organique

Publications (1)

Publication Number Publication Date
EP2995849A1 true EP2995849A1 (de) 2016-03-16

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EP15183965.1A Withdrawn EP2995849A1 (de) 2014-09-15 2015-09-04 Leuchtmodul, das eine organische elektrolumineszenzdiode umfasst

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EP (1) EP2995849A1 (de)
FR (1) FR3025861B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106641951A (zh) * 2016-09-20 2017-05-10 吴富双 一种通用的车前照灯装置
EP3290775A1 (de) * 2016-08-30 2018-03-07 Toshiba Lighting & Technology Corporation Fahrzeugbeleuchtungsvorrichtung und fahrzeuglampe

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6565231B1 (en) * 2002-05-28 2003-05-20 Eastman Kodak Company OLED area illumination lighting apparatus
DE102005024838A1 (de) * 2005-05-27 2006-11-30 Johnson Controls Headliner Gmbh Beleuchtung für den Innen- oder Außenbereich eines Fahrzeuges mit einer OLED
JP2007317819A (ja) * 2006-05-25 2007-12-06 Matsushita Electric Works Ltd 発光ユニット
US20090256472A1 (en) * 2008-04-15 2009-10-15 Lohneis Paul E Three-dimensional lighting structure utilizing light active technology
JP2010192819A (ja) * 2009-02-20 2010-09-02 Panasonic Electric Works Co Ltd 照明用有機ｅｌパネル
DE202011108565U1 (de) * 2011-12-02 2013-03-04 Bjb Gmbh & Co. Kg Lampe mit wenigstens einer organischen, lichtemmitierenden Diode
EP2592331A1 (de) * 2011-11-09 2013-05-15 Valeo Vision Beleuchtungs- und/oder Signalisierungsvorrichtung eines Kraftfahrzeugs, die eine Flächenlichtquelle umfasst
DE202013105597U1 (de) * 2013-12-10 2014-02-12 Odelo Gmbh Leuchtmittel und hiermit ausgestattete Kraftfahrzeugleuchte
WO2015014843A1 (de) * 2013-07-29 2015-02-05 Osram Oled Gmbh Organische leuchtdiode und anordnung mit einer organischen leuchtdiode
WO2015032949A1 (fr) * 2013-09-09 2015-03-12 Valeo Vision Module lumineux comportant une diode electroluminescente organique

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6565231B1 (en) * 2002-05-28 2003-05-20 Eastman Kodak Company OLED area illumination lighting apparatus
DE102005024838A1 (de) * 2005-05-27 2006-11-30 Johnson Controls Headliner Gmbh Beleuchtung für den Innen- oder Außenbereich eines Fahrzeuges mit einer OLED
JP2007317819A (ja) * 2006-05-25 2007-12-06 Matsushita Electric Works Ltd 発光ユニット
US20090256472A1 (en) * 2008-04-15 2009-10-15 Lohneis Paul E Three-dimensional lighting structure utilizing light active technology
JP2010192819A (ja) * 2009-02-20 2010-09-02 Panasonic Electric Works Co Ltd 照明用有機ｅｌパネル
EP2592331A1 (de) * 2011-11-09 2013-05-15 Valeo Vision Beleuchtungs- und/oder Signalisierungsvorrichtung eines Kraftfahrzeugs, die eine Flächenlichtquelle umfasst
DE202011108565U1 (de) * 2011-12-02 2013-03-04 Bjb Gmbh & Co. Kg Lampe mit wenigstens einer organischen, lichtemmitierenden Diode
WO2015014843A1 (de) * 2013-07-29 2015-02-05 Osram Oled Gmbh Organische leuchtdiode und anordnung mit einer organischen leuchtdiode
WO2015032949A1 (fr) * 2013-09-09 2015-03-12 Valeo Vision Module lumineux comportant une diode electroluminescente organique
DE202013105597U1 (de) * 2013-12-10 2014-02-12 Odelo Gmbh Leuchtmittel und hiermit ausgestattete Kraftfahrzeugleuchte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3290775A1 (de) * 2016-08-30 2018-03-07 Toshiba Lighting & Technology Corporation Fahrzeugbeleuchtungsvorrichtung und fahrzeuglampe
CN106641951A (zh) * 2016-09-20 2017-05-10 吴富双 一种通用的车前照灯装置
CN106641951B (zh) * 2016-09-20 2020-01-10 吴富双 一种通用的车前照灯装置

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Publication number Publication date
FR3025861B1 (fr) 2019-05-10
FR3025861A1 (fr) 2016-03-18

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