EP2425176B1 - Système d'éclairage présentant au moins une bande lumineuse - Google Patents

Système d'éclairage présentant au moins une bande lumineuse Download PDF

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Publication number
EP2425176B1
EP2425176B1 EP10720375.4A EP10720375A EP2425176B1 EP 2425176 B1 EP2425176 B1 EP 2425176B1 EP 10720375 A EP10720375 A EP 10720375A EP 2425176 B1 EP2425176 B1 EP 2425176B1
Authority
EP
European Patent Office
Prior art keywords
contact region
lighting system
connection element
contact
contacts
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.)
Not-in-force
Application number
EP10720375.4A
Other languages
German (de)
English (en)
Other versions
EP2425176A1 (fr
Inventor
Robert Kraus
Thomas Preuschl
Steffen Strauss
Birgit Wels
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.)
Osram GmbH
Original Assignee
Osram 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 Osram GmbH filed Critical Osram GmbH
Publication of EP2425176A1 publication Critical patent/EP2425176A1/fr
Application granted granted Critical
Publication of EP2425176B1 publication Critical patent/EP2425176B1/fr
Not-in-force 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
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/717—Structural association with built-in electrical component with built-in light source

Definitions

  • the invention relates to lighting system with at least one light strip and at least one connecting element.
  • the US 4,173,035 and the DE 100 51 528 A1 each show a light strip, which can be subdivided and reconnected by means of suitable plug after a cut or connected to a power supply.
  • the object of the present invention is to provide a lighting system which offers an easy-to-implement possibility for assembling light strips, in particular for a separation within a unit printed circuit board.
  • the lighting system comprises at least one connecting element, in particular plug-in and / or clamping connection element, and at least one light strip with at least one strip-shaped unit printed circuit board, wherein the unit board is equipped with at least two semiconductor light sources, in particular light-emitting diodes (LED), and has at least one arranged between at least two semiconductor light sources contact area, wherein the contact region is formed cut and the contact area and the connecting element such are configured such that after a severing of the contact region, the connecting element can be applied to the contact region and at least one circuit on the unit circuit board can be closed by applying the connecting element to the contact region.
  • the connecting element in particular plug-in and / or clamping connection element
  • the unit board is equipped with at least two semiconductor light sources, in particular light-emitting diodes (LED), and has at least one arranged between at least two semiconductor light sources contact area, wherein the contact region is formed cut and the contact area and the connecting element such are configured such that after a severing of the contact region, the connecting element can be
  • the light strip can be separated in the contact area by simple means, for example by cutting, scribing, breaking or the like, and thus brought to the desired length. Subsequently, the now open circuit is closed on the circuit board by the connecting element applied to the separation point, for example, postponed in the case of a connector element, which can be done much easier than, for example, an SMD soldering. In addition, a thermal load is avoided by the soldering process.
  • the choice of closing the circuit suitable component so for example, the correct resistance can also be simplified by the design of the connecting element, since this can be configured so that a confusion is excluded.
  • At least one electronic component in particular at least one resistor and / or at least one diode being provided for closing the at least one circuit, it is ensured that the circuit is adequately, i. so that an overload of components, in particular the semiconductor light sources and / or the power supply excluded and the desired performance is achieved.
  • the contacts in the contact region is formed depending on the number of semiconductor light sources between a Stromeinspeisestelle and / or a terminal of the light strip and the contact area and the position of the contacts is correlated with the number of separated or remaining semiconductor light sources, which thus easily recognizable is and thus allows the selection of a suitable device for closing the circuit or a suitable connecting element.
  • a connecting element with the arrangement of the contacts on the light strip matching arrangement of mating contacts, which are operatively connected to suitable elements for closing at least one circuit, it can be ensured that the circuit in an adequate manner, ie such that an overload of components, in particular the semiconductor light sources and / or the Power supply excluded and the desired performance is achieved.
  • a suitable connecting element optionally by selecting a suitable connecting element, a selection are taken, which circuit of the light strip is closed and so, for example, the selection of a lighting function are taken.
  • At least one contact which is provided for transmitting a potential that is approximately the same at a plurality of, in particular all, contact regions, has the same position in the transverse direction at these contact regions.
  • At least one electronic component provided for closing the at least one electric circuit is arranged in the region of the connecting element, in particular within a housing which encloses the connecting element at least partially.
  • At least one electronic component provided for closing the at least one electric circuit is arranged spatially separated from the connecting element.
  • the connecting element can be made very compact, which may be advantageous, for example, the fitting of the light strip in confined spaces.
  • the electronic components can be arranged at a suitable installation location, even at some distance to the light strip.
  • At least one electronic component provided for closing the at least one electric circuit is arranged on a cooling device, in particular a heat sink.
  • the electronic components For example, especially when many LEDs are separated from the unit board and thus much power flows into the electronic components, they can develop considerable heat, which can thus be easily dissipated.
  • the connecting element comprises at least one zero-force connecting element, in particular designed as a zero-force connecting element.
  • the connecting element can be applied to the light strip easily and with a low risk of damage.
  • At least two current-carrying elements in particular contacts and / or printed conductors, which are arranged in at least one contact region on opposite sides of the light strip and can be acted upon with different potentials during operation of the light strip, are arranged transversely spaced from one another in the contact region.
  • typical light bands has the flexible circuit board, which is occupied on the top and bottom with each conductor tracks and / or contacts, as thin as possible.
  • the features described for the lighting system according to the invention can also be realized individually in the components forming the system, ie a light strip and matching connecting elements, which can also be sold individually.
  • FIG. 1 shows in top plan view of a conventional flexible light strip 1 from, for example, two contiguous
  • Each of the unit circuit boards 2 has a flexible substrate 3 made of polyimide, whose visible front side is equipped with four light-emitting diodes 4.
  • the light-emitting diodes 4 are equally spaced (equidistantly) with respect to a longitudinal direction of the unit printed circuit board 2.
  • each of the unit printed circuit boards 2 has electrical contacts 5, in this case two contacts 5 each.
  • the unit boards 2 are integrally formed with the substrates 3 of the unit boards 2 as a single, one-piece quasi-endless substrate of the luminous ribbon 1.
  • the adjacent contacts 5 of two adjacent unit boards 2 are designed as a single contact strip which extends over both unit boards 2.
  • this can, as symbolically indicated by the scissors, be separated along a dividing line T. So that a separation of the light strip 1 does not lead to a power interruption of all unit circuit boards 2, the unit circuit boards 2 hang electrically parallel. In a separation thus only those unit circuit boards 2 are cut off from a power supply, which of a -. B. external - electrical supply source can be separated. However, a separation between light emitting diodes 4 of a unit board 2 causes all LEDs 4 of this unit board 2 to fail because the LEDs 4 of a unit board 2 are electrically connected in series.
  • FIG. 1 shows in the middle in plan view a unit PCB 2 according to the prior art in a detailed view.
  • a pair of bridging contacts 6 in the form of solder fields is arranged.
  • Each of the pairs of bridging contacts 6 can, for example, be bridged by soldering on a surface-mountable resistor (not shown).
  • the unit board 2 can be severed between two LEDs 4, z. B. along a dividing line U, more precisely between a pair of bridging contacts 6 and the electrically connected, here: further right, LED 4.
  • FIG. 1 At one, left here, end, the unit board 2 is equipped with a control circuit 7, which has two transistors Q1, Q2 and two resistors R1, R2.
  • the control circuit 7 is connected via the contacts 8 and / or 9 to an electrical supply (not shown).
  • the control circuit 7, the LEDs 4 are electrically connected in series. Will the unit board 2 without further action along the dividing lines U from FIG. 1 cut above, the circuit of this unit board 2 is interrupted, causing all the LEDs 4 would not light up.
  • FIG. 2 schematically shows a unit circuit board 2 of a light strip 1 for a lighting system according to the invention in plan view. Also shown schematically is the layout of the unit board 2.
  • the basic structure corresponds to that in FIG. 1 shown light strip 2, that is, at both (seen with respect to the longitudinal direction) end portions E, each of the unit circuit boards 2 electrical contacts 5a, 5b, here two contacts 5a, 5b.
  • this can, as symbolically indicated by the scissors, be separated along a dividing line T.
  • the layout of the unit board 2 substantially corresponds to that in FIG. 1 Below shown diagram, wherein a representation of the control circuit 7 has been omitted.
  • There are two continuous tracks 10, 11 are provided, which can also be used to power subsequent unit circuit boards 2, so that the unit circuit boards 2 a light strip 1 are electrically connected in parallel.
  • the LEDs 4 are connected in series by means of a conductor 12 connecting the LEDs 4.
  • a contact region 13 is provided at the separating lines T, at which a first continuous conductor track 10 and the conductor track 12 connecting the LEDs 4 are each provided with a contact 14a, 14b. If the unit circuit board 2 is severed without any further measures along one of the separating lines T, the circuit is interrupted by the light-emitting diodes 4. By electrically bridging a pair of contacts 14a, 14b by means of a respective bridging element of the circuit can be closed again, whereby the then closed again part of the circuit existing light emitting diodes 4 can shine. For this purpose, for example, an adapted resistor is required, which degrades the required power depending on the number of operated or separated LEDs 4.
  • the contacts 14b of the continuous conductor 10 (which of course have approximately the same potential at all contact regions 13) are located at all contact regions 13 in the transverse direction of the light strip 1 at the same position, whereas the position of the contact 14a of the conductor 4 connecting the LEDs 12 varies depending on the number of LEDs 4 between the separation point T and the contacts 5a for power supply to the unit board 2.
  • a contact 16 of the connecting element 15 is provided for contacting the contact 14b of the continuous conductor track 10, while the contacts 17 are provided for contacting the contacts 14a of the conductor tracks 12 connecting the LEDs 4.
  • the elements 18 represent electronic components 18a, which are needed to close a circuit of the light strip 1.
  • An element 18 is provided in each case for compensating for the absence of an LED 4, that is to say on the element 18 the voltage drops to the same extent as on an LED 4 used on the light strip 1.
  • the elements 18 may for example consist of individual resistors or diodes or also of arrays of such electronic components 18a.
  • a use of resistors offers itself as a simple and cost-effective variant, if in all applications the light strip is operated with constant current, because then the voltage drop across the resistor is clearly defined. If the connecting element 15 can be operated at different currents, the more complicated use of diodes is advisable, since they always have the same voltage drop as would occur on the separated LEDs 4.
  • FIG. 4 shows various embodiments of a connecting element according to the invention.
  • a is a dacaslement 15 shown, which is essentially of a so-called ZIF connector 19, ie, a zero force connection element 19, with a directly and firmly connected to FR4 board 20, that is constructed of an epoxy resin and glass fiber fabric board built.
  • the connecting element 15 can be used to replace up to three separate LEDs 4, which are substituted by 3 diodes 21 as electronic components 18 a.
  • the structure corresponds to the in FIG. 3 shown scheme.
  • FIG. 4b shows a lot of the in FIG. 4a shown identical connection element 15, wherein now an additional (hidden in the ZiF plug 19) contact for connection to the second continuous conductor 11 of the light strip is provided.
  • the two continuous conductor tracks 10, 11 can be continued beyond the connecting element 15 by means of the connection cable 22, for example, to be connected to further light bands 2.
  • FIG. 4c shows a variant of in FIG. 4b shown connecting element 15, in which a housing 23, the circuit board 20, the diodes 21 and partially the ZIF connector 19 and the connecting cable 22 surrounds.
  • the housing 23 is designed in the present embodiment as an injection molded part, which is filled for better heat dissipation with so-called seal gel, ie a heat-dissipating, electrically insulating and possibly moisture-proof mass.
  • seal gel ie a heat-dissipating, electrically insulating and possibly moisture-proof mass.
  • Other embodiments of the housing 23 are conceivable, both with regard to the shaping and the production as well as the material used, for example in the form of a potting or by applying a hot melt adhesive.
  • FIG. 4d shows a further embodiment of a connecting element according to the invention 15.
  • the board 20 is designed as a metal core board, which allows better heat dissipation from the electronic components 18a.
  • the circuit board 20 is not surrounded on its underside by the housing 23 and can be connected directly to an adhesive layer 24 with a heat sink, not shown here, which serves for example for cooling the light strip 1.
  • FIG. 5 Another embodiment of the connecting element is shown schematically in FIG. 5 shown.
  • a plug 19 is connected as a connecting element 15 by means of a cable connection 25 with an electronic module 26 which contains the elements 18 required for closing the circuit and in turn is arranged on a cooling body 27.
  • This design is particularly useful when high power must be dissipated because the spatial separation of the electronic module 26 of the light strip 1 its thermal load can be significantly reduced.
  • the plug 19 at the end of the light strip 1 requires much less installation space than when an arrangement according to FIG. 4 is installed.
  • FIG. 6 shows an embodiment of an inventive, not yet equipped with components strip light 1 in the overall view (bottom) and in three detailed views (above).
  • On the sides while the continuous tracks 10, 11 are provided, which can also be used to power subsequent unit circuit boards.
  • These printed conductors 10, 11 can also be contacted by a slipped ZIF plug 19 after cutting through, while commercially available ZIF plugs offer no possibility for contacting the printed conductors 28, 29 on the underside B.
  • a contact region 13 which has contacts 14a of the conductor track 12 connecting the LEDs 4 and also contacts 14b of the conductor track 10.
  • a contact region 13 which has contacts 14a of the conductor track 12 connecting the LEDs 4 and also contacts 14b of the conductor track 10.
  • a polyimide film of 25 .mu.m thickness is arranged between copper conductor tracks of 50 .mu.m thickness, it can be cut through occur a separation point T that the two copper layers come into contact with each other, so that it can lead to a short circuit at different potential.
  • the lower conductor tracks 28, 29 are provided with recesses 30 in the contact region 13, so that they are spaced transversely from the overlying contacts 14a, which may have a different potential.
  • Such a principle is applicable to all separable light bands, regardless of whether a connecting element 15 or a soldered connection are used or even no further processing takes place.
  • connection elements 15 for different types of light bands 1 or different connection elements 15 for identical light bands 1, which are matched to the respective intended use, for example, due to their geometry, the components 18a used or other features.
  • this can also be the different embodiments in FIG. 4 serve, which can be used in each case with identical light bands 1.
  • the separation of the light strip 1 can be accomplished for example by cutting or scribing and breaking.
  • the printed circuit board 2 can be advantageously flexible, inter alia for laying the light strip 1, even on curved surfaces ('Flexband').
  • laser diodes can also be used.
  • the contacting of the light strip 1 can also be done by means of other suitable connecting elements, in particular by means of another plug or a clamp connection.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (10)

  1. Système d'éclairage comprenant un élément de liaison (15), en particulier un élément de liaison à fiches et/ou à bornes (15), ainsi qu'au moins une bande lumineuse (1) avec une plaquette de circuits imprimés unitaire (2), dans lequel la plaquette de circuits imprimés unitaire (2) est munie d'au moins deux sources de lumière à semi-conducteur (4), en particulier des diodes électroluminescentes (4), et présente au moins une zone de contact (13) disposée entre au moins deux sources de lumière à semi-conducteur (4), dans lequel la zone de contact (13) peut être sectionnée et la zone de contact (13) et l'élément de liaison (15) sont configurés de telle manière qu'après un sectionnement de la zone de contact (13), l'élément de liaison (15) puisse être appliqué sur la zone de contact (13) et que, au moyen de l'application de l'élément de liaison (15) sur la zone de contact (13), au moins un circuit électrique sur la plaquette de circuits imprimés unitaire (2) puisse être fermé, caractérisé en ce que l'agencement de contacts (14a, 14b) dans la zone de contact (13) est réalisé en fonction du nombre des sources de lumière à semi-conducteur (4) entre un point d'alimentation électrique (5a) et/ou un point d'extrémité (E) de la bande lumineuse et la zone de contact (13) et la position des contacts (14a, 14b) est corrélée avec le nombre des sources de lumière à semi-conducteur séparées ou restées.
  2. Système d'éclairage selon la revendication 1, caractérisé en ce qu'il est prévu pour la fermeture dudit au moins un circuit électrique au moins un composant électronique (18a), en particulier au moins une résistance et/ou au moins une diode (21).
  3. Système d'éclairage selon une des revendications 1 à 2, caractérisé en ce que différents circuits électriques peuvent être fermés en fonction du nombre des sources de lumière à semi-conducteur (4) entre un point d'alimentation électrique (5a) et/ou un point d'extrémité (E) de la bande lumineuse (1) et une zone de contact (13).
  4. Système d'éclairage selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'au moins un contact (14b), qui est prévu pour la transmission d'un potentiel approximativement identique à plusieurs, en particulier à toutes les zones de contact (13), présente à ces zones de contact (13) la même position en direction transversale.
  5. Système d'éclairage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, par rapport audit au moins un contact (14b), qui est prévu pour la transmission d'un potentiel approximativement identique à plusieurs, en particulier à toutes les zones de contact (13), d'autres contacts (14a) de la même zone de contact (13) sont plus éloignés lorsqu'il se trouve un nombre croissant des sources de lumière à semi-conducteur (4) entre un point d'alimentation électrique (5a) et/ou un point d'extrémité (E) de la bande lumineuse (1) et la zone de contact (13).
  6. Système d'éclairage selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins un composant électronique (18a) prévu pour la fermeture dudit au moins un circuit électrique est disposé dans la région de l'élément de liaison (15), en particulier à l'intérieur d'un boîtier (23) entourant au moins partiellement l'élément de liaison (15).
  7. Système d'éclairage selon l'une des revendications 1 ou 2, caractérisé en ce qu'au moins un composant électronique (18a) prévu pour la fermeture dudit au moins un circuit électrique est disposé de façon spatialement séparée de l'élément de liaison (15)
  8. Système d'éclairage selon l'une des revendications 1 ou 2, caractérisé en ce qu'au moins un composant électronique (18a) prévu pour la fermeture dudit au moins un circuit électrique est disposé sur un dispositif de refroidissement (27), en particulier un corps de refroidissement (27).
  9. Système d'éclairage selon l'une des revendications 1 ou 2, caractérisé en ce que l'élément de liaison (15) présente au moins un élément de liaison à force d'insertion nulle (19), et est réalisé en particulier sous la forme d'un élément de liaison à force d'insertion nulle (19).
  10. Système d'éclairage selon l'une des revendications 1 ou 2, caractérisé en ce qu'au moins deux éléments de transport de courant (14a, 28, 29) disposés dans au moins une zone de contact (13) sur des côtés opposés (A, B) de la bande lumineuse (1), pouvant être alimentés pendant le fonctionnement de la bande lumineuse (1) avec un potentiel différent, en particulier des contacts (14a) et/ou des pistes conductrices (28, 29), sont disposés à distance l'un de l'autre en direction transversale dans la région de contact (13).
EP10720375.4A 2009-04-30 2010-04-29 Système d'éclairage présentant au moins une bande lumineuse Not-in-force EP2425176B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019285A DE102009019285A1 (de) 2009-04-30 2009-04-30 Beleuchtungssystem mit mindestens einem Leuchtband
PCT/EP2010/055849 WO2010145879A1 (fr) 2009-04-30 2010-04-29 Système d'éclairage présentant au moins une bande lumineuse

Publications (2)

Publication Number Publication Date
EP2425176A1 EP2425176A1 (fr) 2012-03-07
EP2425176B1 true EP2425176B1 (fr) 2016-08-24

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Application Number Title Priority Date Filing Date
EP10720375.4A Not-in-force EP2425176B1 (fr) 2009-04-30 2010-04-29 Système d'éclairage présentant au moins une bande lumineuse

Country Status (5)

Country Link
US (1) US9228707B2 (fr)
EP (1) EP2425176B1 (fr)
CN (1) CN102365491B (fr)
DE (1) DE102009019285A1 (fr)
WO (1) WO2010145879A1 (fr)

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DE102007028463A1 (de) 2007-06-18 2009-01-02 Osram Gesellschaft mit beschränkter Haftung Lichtemittierendes System mit Steckverbindung
DE102009008095A1 (de) 2009-02-09 2010-08-12 Osram Gesellschaft mit beschränkter Haftung Konfektionierbares Leuchtband
DE102009014535A1 (de) 2009-03-24 2010-09-30 Osram Gesellschaft mit beschränkter Haftung Leuchtmodul, Nullkraftverbindungselement und Stromversorgung für ein Leuchtband

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US20120044689A1 (en) 2012-02-23
CN102365491B (zh) 2014-03-12
WO2010145879A1 (fr) 2010-12-23
US9228707B2 (en) 2016-01-05
CN102365491A (zh) 2012-02-29
EP2425176A1 (fr) 2012-03-07
DE102009019285A1 (de) 2010-11-04

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