EP3839326A1 - Bandes d'éclairage à del et phrase de véhicule - Google Patents

Bandes d'éclairage à del et phrase de véhicule Download PDF

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Publication number
EP3839326A1
EP3839326A1 EP20205838.4A EP20205838A EP3839326A1 EP 3839326 A1 EP3839326 A1 EP 3839326A1 EP 20205838 A EP20205838 A EP 20205838A EP 3839326 A1 EP3839326 A1 EP 3839326A1
Authority
EP
European Patent Office
Prior art keywords
led light
substrate
leds
light
strips
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.)
Pending
Application number
EP20205838.4A
Other languages
German (de)
English (en)
Inventor
Markus Pecher
Lutz Pötzschner
Susanne Koburger
Matthias BÖTTCHER
Markus Winkler
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.)
Vosla GmbH
Original Assignee
Vosla 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 Vosla GmbH filed Critical Vosla GmbH
Publication of EP3839326A1 publication Critical patent/EP3839326A1/fr
Pending 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]
    • 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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S43/13—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
    • F21S43/15—Strips of light sources
    • 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

Definitions

  • the present invention relates to an LED light strip, in particular for a lighting device of a motor vehicle or a mobile transportation device, as well as a vehicle light with such an LED light strip.
  • Previous LED strips for vehicle lighting devices are suitable for representing uninterrupted lines.
  • the EP3193075 A1 describes such an LED strip as well as a seamless juxtaposition of such LED strips. Bumps of such LED strips are sometimes avoided to avoid visible transitions.
  • the present invention is based on the object of specifying an improved LED light strip.
  • this object is achieved by an LED light strip with the features of claim 1 and / or solved by a vehicle lamp with the features of claim 12.
  • the knowledge on which the present invention is based consists in the fact that, for the differentiation and / or individualization of light signatures with complex geometries, light strips, for example blunt, pointed or normal, can meet.
  • the idea on which the present invention is based now consists in forming an LED light strip with a substrate which has a fork and to distribute the LEDs on it homogeneously over the fork. This ensures that no interruption is visible in the area of the fork when the light is on.
  • the present invention thus allows the formation of complex geometries by light strips with not only two ends but also at least three ends, such as. B. T or Y-pieces, as well as the formation of curved light strips (xy-plane).
  • LED light strips By combining such LED light strips in a light, in particular a vehicle light, more complex geometries, such as letters, can also be implemented without a visible (i.e. non-luminous) joint.
  • These joined or joined shapes such as symbols, letters, characters, patterns or the like, are then also homogeneously luminous, ie. H. uninterrupted or formed luminous without a break line.
  • motor vehicles or other mobile transport devices in particular passenger transport devices, can be provided with individual light signatures with complex geometries without a visible interruption.
  • the substrate has at least three ends which are occupied by LEDs in the same density.
  • z. B. form T- or Y-shaped evenly luminous light strips.
  • more than three ends are also conceivable, so that cross-shaped or star-shaped light strips with four, five, six or more ends are possible and, if necessary, provided.
  • a lateral contact is provided for the LEDs on the substrate.
  • it is a common contact.
  • the LEDs can be easily contacted, for example via a common plug.
  • a plurality of pairs of contact strips are provided for contacting the LEDs, which pairs are arranged along the substrate and across the fork.
  • the pairs of contact strips can be arranged in particular along the local longitudinal direction of the substrate, so that the LEDs can be contacted in segments along the longitudinal direction.
  • the pairs of contact strips are each designed to be individually contactable, so that each pair of contact strips forms a luminous segment with the LEDs that are contacted with them.
  • Such light segments can then advantageously reduce the consequences of a failure of individual LEDs and, in addition, they can advantageously generate moving light choreographies.
  • each light segment is designed to be individually controllable, so that the LEDs arranged in the contact segment can be illuminated independently of other light segments. In this way, different luminous structures can be displayed or alternatively luminous luminous segments can be choreographed.
  • the LEDs are distributed evenly across the luminous segments on the substrate, so that adjacent luminous segments can be jointly illuminated without a transition. This guarantees uninterrupted lighting.
  • the pairs of contact strips can each be laterally contacted via an individual contact. Accordingly, each LED light strip has its own contact on one side of the substrate. The LED light strip can thus advantageously be contacted flexibly.
  • the substrate is Y-shaped. Accordingly, the LEDs are also arranged in a Y-shape. Alternatively, the substrate can also be T-shaped. In this case, the LEDs are also arranged in a T-shape. In this way, diverse complex geometries with a Y or T joint of a light signature can advantageously be formed.
  • the at least one fork has a three-dimensional shape with a stem and two arms extending in different planes. This means that three-dimensional structures with complex geometries can also be represented.
  • the substrate has at least one curvature.
  • this can be a single change in direction of the extent of the substrate.
  • multiple curvatures can also be provided. In the case of multiple curvatures, these can be provided in the same or in different directions.
  • a wide variety of complex geometries with curved lines can be represented as a luminous signature.
  • it can be one or more curvatures around one or more planes, in particular also and / or additionally in the xz plane.
  • the shape of the LED light strip can thus be adapted to a wide variety of vehicle contours.
  • the curvature forms a point in the course of the substrate.
  • this tip includes an acute angle of less than 90 °, preferably less than 50 °.
  • the LEDs are preferably also distributed homogeneously over the tip. This ensures that no interruption is visible in the area of the tip in the illuminated state.
  • electronic components in particular series resistors and / or overvoltage protection elements and / or control electronics, are also provided on the substrate in addition to the LEDs.
  • a sleeve surrounding the substrate and the LEDs is provided.
  • This can be designed to be protective and / or insulating.
  • the envelope is preferably transparent.
  • the shell can also have a phosphorescent and / or coloring layer, in particular for color matching.
  • the substrate has a form factor which has a ratio between width and length and / or between height and length of less than 1/25. It is therefore an elongated substrate.
  • a plurality of LED light strips that are at least partially adjoining one another at their ends is provided, which together form a light signature.
  • complex geometries for example characters, letters, symbols, patterns or the like, can be represented in a seamless light signature.
  • a complex geometry formed jointly with the LED light strips forms a point.
  • this tip includes an acute angle of less than 90 °, preferably less than 50 °.
  • a tip of a transition-free light signature can thus also advantageously be represented, with no interruption being visible in the area of the tip.
  • a sleeve surrounding the plurality of LED light strips that are at least partially adjoining one another at their ends is provided.
  • This can be designed to be protective and / or insulating.
  • the envelope is preferably transparent.
  • the shell can also have a phosphorescent and / or coloring layer, in particular for color matching.
  • the ends of the LED strips are designed such that they can be coupled to one another in such a way that adjacent LED light strips can be illuminated without a transition via the coupling. Complex geometries can thus be represented without visible interruptions.
  • a control device is provided for the segmented control of the individual light segments of the LED light strips.
  • an individual yet coordinated control of the individual light strips and, in particular, an individual control of the individual light segments of the light strips is made possible.
  • a common light signature can thus be controlled in the vehicle light and / or a common light choreography of the light segments can be implemented.
  • Fig. 1 shows a schematic representation of an LED light strip 1.
  • the LED light strip 1 has a substrate 2 which has a fork 3. Accordingly, the substrate 2 is formed in one piece at the fork in two arms 4, 5 extending in different directions. In the illustrated embodiment is a common Stalk 14, which forms a base of the fork 3, and also each of the arms 4, 5, viewed individually, is elongated.
  • the substrate is a single unit that can be designed as a circuit board, for example.
  • a regular arrangement of LEDs (Light Emitting Diode) 6 is provided along the substrate 2, the LEDs 6 being distributed uniformly across the fork 3. In this way, both the stem 14 and the arms 4, 5 are each occupied in the same way or with the same homogeneous distribution of LEDs.
  • the substrate 2 thus has three ends 7, 8, 9 which are occupied by LEDs 6 in the same density.
  • a first end 7 is provided on the stem.
  • a second end 8 is provided on the first arm 4 and a third end 9 is provided on the second arm 5.
  • Fig. 2 shows a top view of a Y-shaped LED light strip.
  • the substrate 2 is formed correspondingly with three ends Y-shaped and the arms 4, 5 are curved.
  • the individual LEDs are not shown here for the sake of clarity.
  • a lateral contact 10 is provided for the LEDs 6 on the substrate 2. This is designed, for example, to accommodate a female contact plug (not shown). Furthermore, for the sake of clarity, conductors (not shown) are provided on the substrate for contacting the LEDs with the plug. This will be further related to Figures 9 and 10 explained in more detail.
  • Fig. 3 shows a schematic representation of the arrangement of LEDs 6 and pairs of current-carrying contact strips 11, 12 on a Y-shaped LED light strip 1.
  • LEDs 6 arranged homogeneously or regularly distributed over the substrate 2 and the fork 3 are provided.
  • Several adjacent LEDs 6, here for example three LEDs each, are contacted in series with one another as a common segment.
  • a large number of pairs of contact strips 11, 12 with different polarity +/- are provided, which are arranged along the substrate 2 and across the fork 3.
  • the series-connected LEDs of a segment can be supplied with power via these contact strips.
  • the pairs of contact strips 11, 12 are each designed to be individually contactable, so that each pair of contact strips with the LEDs 6 contacted thereby forms an individually controllable luminous segment 13.
  • the pairs of contact strips 11, 12 can each be laterally contacted via an individual contact.
  • two luminous segments 13 are provided on the stem 14 and one luminous segment 13 is provided on each of the arms 4, 5.
  • higher numbers of light segments 13 can also be provided on the stem 14 and / or on the arms 4, 5.
  • contacts combined into a common plug or a common lateral contact are also possible, the segmentation and individual controllability of the light segments 13, however, preferably being retained.
  • Fig. 4 shows a schematic representation of the arrangement of LEDs 6 and pairs of contact strips 11, 12 on a T-shaped LED light strip 1.
  • the arms 4, 5 here run in opposite directions on a common straight line.
  • the stem 14 is oriented perpendicular to the arms.
  • the fork 3 is thus T-shaped here. In other embodiments, however, inclined alignments would also be conceivable.
  • the substrate continues in more than two arms at the fork, for example also in three or more arms.
  • these can be aligned vertically or, in the case of three or more arms, obliquely to one another.
  • a configuration as a cross or star shape would also be conceivable.
  • Fig. 5 shows a perspective view of a three-dimensionally shaped light strip 1.
  • the two arms 4 'and 5' here run obliquely to one another in different planes.
  • the fork 3 has a three-dimensional shape with a stem 14 and two arms 4 ′, 5 ′ extending in different planes, which continue the substrate 2 starting from the stem 14.
  • the first arm 4 ' has a curvature 15 designed as a tip 16 which, like the rest of the substrate, is illuminated completely homogeneously.
  • the substrate 2 and the LEDs are surrounded by an insulating and protective cover 18, for example made of transparent plastic.
  • the tip 16 can also be formed by lining up a further substrate 2 'provided with LEDs. In this case, the sheath 18 surrounds both substrates.
  • Fig. 6 shows a plan view of a light strip 1 with a plurality of light segments 13.
  • the LED strip 1 In the area of its fork 3, the LED strip 1 has a light segment 13 that runs over the fork. This is followed by a further luminous segment 13 on each of the arms 4, 5. In the area of the arms 4, 5, the substrate also has a curvature 15, so that it is curved light segments 13. Overall, the substrate 2 is thus curved several times in this embodiment.
  • luminous segments 13 are arranged in a row directly adjoining one another on a common line.
  • the common Line is provided here as an example. In further embodiments, however, a common curved line with a further curvature 15 would also be equally conceivable.
  • each luminous segment 13 has its own contact 10. In this way, each light segment 13 can be controlled individually.
  • the LED light strip is provided for a lighting device of a motor vehicle, it being provided in particular for the formation of a light signature, for example in a daytime running light or in a rear light.
  • Fig. 7 shows a schematic representation of a vehicle light 20 with a plurality of LED light strips 1.
  • the vehicle light 20 can be designed, for example, as a headlight, daytime running light, tail light or signal light.
  • the vehicle light has, in addition to a housing 23, three adjacent LED light strips 1 Fig. 6 on. A plurality of LED light strips 1 adjoining one another at their ends is thus provided, which together form a light signature.
  • the light signature continues uninterrupted at the border of two LED light strips.
  • the arrangement further comprises further light strips without a fork 3 and can also be expanded with further light strips with and / or without a fork.
  • the ends 8, 9 on the arms 4, 5 of the LED strips 1 are here, for example, designed to be directly coupled to one another and can be illuminated seamlessly via the coupling. This creates an uninterrupted light signature, im In the present case, for example, with a pattern formed by the complementary arms 4, 5 of the LED light strips 1 arranged offset to one another.
  • Fig. 8 shows a schematic representation of the interconnection of luminous segments 13 with a control device 21.
  • the light segments 13 are shown here separately from one another for the sake of clarity. However, it is a cohesive substrate, as in Fig. 6 shown, which is only functionally divided into light segments.
  • the LED light strip is a unit containing at least two substrates 2, which unit forms a light strip.
  • a common substrate is therefore also to be understood as meaning two or more substrates firmly connected to one another if they form a unit.
  • the fork can also be a branching of at least two attached substrates on the stem or as a common layout on a common substrate.
  • the stem 14 is to be understood in this case as a section with most and / or in total the longest substrates, and has a start of the LED light strip at an end opposite the arms 4, 5.
  • the LED light strip is preferably formed integrally with corresponding contacts and a control device for controlling the contacts.
  • each light segment 13 is individually coupled to the control device 21 and is thus designed to be individually controllable.
  • LEDs 6 arranged in a light segment 13 can be illuminated independently of other light segments.
  • a segmented control of the luminous segments 13 is thus made possible by means of the control device 21.
  • the individual light segments can thus be controlled independently of one another. For example, different light choreographies, such as running or flashing sequences, different light segments are possible
  • a control device 21 can also be provided for controlling light segments 13 of a plurality of light strips 1 and can be correspondingly contacted with the individual light segments 13 of a plurality of LED light strips 1.
  • Fig. 9 shows an exemplary circuit diagram of an LED light strip 1.
  • each luminous segment 13 of a luminous strip can be contacted individually via a common contact 10 at which the individual conductor strands converge isolated from one another.
  • a common contact 10 at which the individual conductor strands converge isolated from one another.
  • it can be a multiple plug.
  • each of the individual light segments 13, which are interconnected in a matrix circuit For example, six LEDs are provided on each of the individual light segments 13, which are interconnected in a matrix circuit. In this way, a failure of a diode can always be compensated for by the switching of the light segment 13, so that all the other diodes of the light segment still light up.
  • LEDs in a light segment 13 are also conceivable in further embodiments.
  • other interconnected LEDs for example pure series connections or pure parallel connections, are also conceivable.
  • an overvoltage protection element 17 in the form of a suppressor diode is provided as a further electronic component for each luminous segment 13 in order to protect the circuit from overvoltage.
  • a suppressor diode is not unavoidable and, in particular in the case of a different overvoltage protection, can therefore also be omitted if necessary.
  • Fig. 10 shows an exemplary representation of the conductor structure of an LED light strip.
  • the shape of the substrate is shown here in a simplified manner without the fork 3 for better clarity
  • LEDs 6 are distributed evenly across the luminous segments 13 on the substrate 2, so that adjacent luminous segments 13 have no transition can be illuminated together.
  • a series resistor 19 is additionally connected upstream of each light segment 13 as a further electronic component.
  • 13 pairs of contact strips 11, 12 are assigned to each of the luminous segments.
  • the pairs of contact strips 11, 12 can be laterally contacted via individual contacts combined in a common contact 10. In this way, all of the luminous segments of the luminous strip can be contacted with a common plug for simple assembly and yet can be controlled individually.
  • an LED light strip 1 according to the invention can be combined in the same way with otherwise similar light strips without bifurcation, in particular can be arranged without transition, for example in a vehicle light 20.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP20205838.4A 2019-12-16 2020-11-05 Bandes d'éclairage à del et phrase de véhicule Pending EP3839326A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019219721.3A DE102019219721A1 (de) 2019-12-16 2019-12-16 LED-Leuchtstreifen und Fahrzeugleuchte

Publications (1)

Publication Number Publication Date
EP3839326A1 true EP3839326A1 (fr) 2021-06-23

Family

ID=73138645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20205838.4A Pending EP3839326A1 (fr) 2019-12-16 2020-11-05 Bandes d'éclairage à del et phrase de véhicule

Country Status (2)

Country Link
EP (1) EP3839326A1 (fr)
DE (1) DE102019219721A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5559681A (en) * 1994-05-13 1996-09-24 Cnc Automation, Inc. Flexible, self-adhesive, modular lighting system
EP1162400A2 (fr) * 2000-06-09 2001-12-12 Omnilux s.r.l. Eléments lumineux modulaires avec LEDs (diodes électroluminescentes)
EP2113899A2 (fr) * 2008-04-29 2009-11-04 Ching-Chuan Lee Module DEL extensible pour ensemble d'affichage arbitraire
CN201803296U (zh) * 2010-08-16 2011-04-20 大连辉华科技有限公司 一种发光二极管装饰造型灯具
EP3193075A1 (fr) 2016-01-15 2017-07-19 vosla GmbH Bande électroluminescente à del et agencement de bandes électroluminescentes à del

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7467486B2 (en) * 2006-05-22 2008-12-23 Kaoh Andy K F Method and apparatus for simulating the appearance of a neon sign
DE102008014172A1 (de) * 2008-03-14 2009-10-08 Wilke, Hans-Jürgen, Dipl.-Ing. Modulares Beleuchtungssystem
FR3056705B1 (fr) * 2016-09-28 2020-07-24 Valeo Vision Module d'emission lumineuse a commande amelioree notamment pour vehicule automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5559681A (en) * 1994-05-13 1996-09-24 Cnc Automation, Inc. Flexible, self-adhesive, modular lighting system
EP1162400A2 (fr) * 2000-06-09 2001-12-12 Omnilux s.r.l. Eléments lumineux modulaires avec LEDs (diodes électroluminescentes)
EP2113899A2 (fr) * 2008-04-29 2009-11-04 Ching-Chuan Lee Module DEL extensible pour ensemble d'affichage arbitraire
CN201803296U (zh) * 2010-08-16 2011-04-20 大连辉华科技有限公司 一种发光二极管装饰造型灯具
EP3193075A1 (fr) 2016-01-15 2017-07-19 vosla GmbH Bande électroluminescente à del et agencement de bandes électroluminescentes à del

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