WO2014155347A1 - Circuit imprimé pour un module électroluminescent à diodes - Google Patents

Circuit imprimé pour un module électroluminescent à diodes Download PDF

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Publication number
WO2014155347A1
WO2014155347A1 PCT/IB2014/060247 IB2014060247W WO2014155347A1 WO 2014155347 A1 WO2014155347 A1 WO 2014155347A1 IB 2014060247 W IB2014060247 W IB 2014060247W WO 2014155347 A1 WO2014155347 A1 WO 2014155347A1
Authority
WO
WIPO (PCT)
Prior art keywords
printed circuit
circuit board
light emitting
section
emitting module
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.)
Ceased
Application number
PCT/IB2014/060247
Other languages
English (en)
Inventor
Ya-Kuang Hsiao
Hai Tao LIU
Lei Sui
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
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 Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of WO2014155347A1 publication Critical patent/WO2014155347A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/0278—Rigid circuit boards or rigid supports of circuit boards locally made bendable, e.g. by removal or replacement of material
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09145—Edge details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/30—Details of processes not otherwise provided for in H05K2203/01 - H05K2203/17
    • H05K2203/302—Bending a rigid substrate; Breaking rigid substrates by bending
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0097—Processing two or more printed circuits simultaneously, e.g. made from a common substrate, or temporarily stacked circuit boards

Definitions

  • the invention relates to light emitting modules comprising printed circuit boards and light emitting elements, as well as a method for manufacturing light emitting modules comprising printed circuit boards and light emitting elements.
  • a PCB panel can be efficiently utilized for creating a plurality of PCBs.
  • the light distribution is important, which is usually not a parameter to consider in other technologies. Accordingly, this complicates designing the PCB to be included in such a luminaire.
  • the object of the invention is to decrease costs for a light emitting module, for example to be included in a luminaire, comprising a printed circuit board and a plurality of light emitting elements arranged on the printed circuit board.
  • the invention is based on the inventors' realization that a plurality of printed circuit boards may be formed from a (larger) printed circuit board panel, by optimizing the form of the printed circuit boards such that the amount of unused areas of the printed circuit board panel may be reduced. Accordingly, it is possible to optimize the physical size of the printed circuit board such that the printed circuit board requires less printed circuit board material area per light emitting element, thereby decreasing the cost of the overall printed circuit board.
  • a light emitting module comprising a plurality of light emitting elements and a printed circuit board being of a substantially elongated shape, the printed circuit board comprising at least a first section comprising electrical connections and being configured for receiving at least one of the plurality of light emitting elements, and at least a second section comprising electrical connections, wherein the first section is wider than the second section and the printed circuit board is bent laterally to form a predetermined shape.
  • the purpose of the light emitting module may typically be to be used in a lighting application used in human environments, both indoors and outdoors, and the light emitting elements are the main components for providing light.
  • the printed circuit board is preferably of a substantially elongated shape, having electrical connections and a designated area on which the light emitting elements are to be arranged. Accordingly, the printed circuit board comprises at least a first section comprising electrical connection and being configured to receive at least one light emitting element and at least a second section comprising electrical connections.
  • the first section is selected to be wider than the second section, which enables a light emitting element to be arranged on the first section, and the second section being thinner than the first section and typically only comprising similar electrical connections as is provided at the first section.
  • the wider first section (compared to the second section) enables a pair of printed circuit boards to be arranged in a shifted manner relative to each other, and as such cover a substantially rectangular area of a larger printed circuit board, thereby enabling the use of a much larger portion of the larger printed circuit board panels when producing and separating printed circuit boards.
  • the light emitting elements will, in use, produce heat to be transferred to (at least) the first wider section and will thus advantageously enable a relatively large area close to the light emitting elements to dissipate heat to the surrounding.
  • the printed circuit board is bent laterally, laterally meaning that the elongated printed circuit board is bent along the width i.e.
  • the printed circuit board is bent laterally to a predetermined shape, where the predetermined shape will be decided by each application in which the light emitting module will be used. Accordingly, one non-specific example could be to bend the printed circuit board such that the light emitting module would fit, by its final bent dimensions, into an ordinary office lighting fixture. Accordingly, in a preferred embodiment there is provided at least three first sections and at least three second sections, from which a relatively large degree of bending may be achieved such that the light emitting module is adaptable to many applications.
  • the first and the second sections may be provided alternating along the length of the elongated printed circuit board. Alternating the first and the second sections along the length of the printed circuit board will ensure that a similar bending angle is present along the length of the elongated printed circuit board. Furthermore, alternating the first and the second section will enable a uniform distribution of light emitting elements along the length of the elongated printed circuit board.
  • the predetermined shape comprises an arc portion.
  • An arc portion means that a portion of the predetermined shape has the same radius of curvature. Different portions of the predetermined shape can have differing radiuses of curvature. Bending the printed circuit board into a predetermined shape such as a circular or an elliptical shape will produce an arc portion of the predetermined shape, for the circular shape the entire predetermined shape will have the same radius of curvature and for the elliptical shape portions of the predetermined shape will have differing radiuses of curvature.
  • a predetermined shape may be provided in meandering manner where the radius of curvature is the same for each portion but is alternating between being positive or negative.
  • the at least one of the plurality of light emitting elements is arranged on the at least first section on the concave side of the bent printed circuit board. Arranging the light emitting elements on a concave side of the printed circuit board will enable the light emitting module to be arranged with a convex side in close proximity to other light emitting modules with a minimal thermal coupling in between.
  • At least one v-shaped cut-out is formed at an outer edge of the second sections prior to the printed circuit board being bent.
  • at least one v-shaped cut-out is formed at an inner edge of the second sections prior to the printed circuit board being bent. Forming v- shaped cut-outs at the outer or inner edges of the second section will facilitate the bending of the printed circuit board.
  • the printed circuit board may comprise a metal-core printed circuit board (MCPCB).
  • MCPCB metal-core printed circuit board
  • the number of light emitting elements used for the light emitting module could be large; hence a MCPCB which is able to convey a large amount of electrical power may preferably be used.
  • the at least one light emitting element may be distributed so that the light emitting elements form a uniform pattern.
  • the at least one light emitting element may be distributed so that the light emitting elements form a non-uniform pattern.
  • a uniform light distribution from the light emitting module may be achieved.
  • a light emitting module with a uniform light distribution may be suitable to use for example in offices or other workplaces where direct lighting may cause stress or suboptimal conditions for humans in the area.
  • Arranging the light emitting elements to form a non-uniform pattern will produce a light emitting module with a non-uniform light distribution, thereby providing a light emitting module which may be suitable for use in placed where direct lighting is desired such as workbenches and desks.
  • a light output device (such as for example a luminaire) may comprise at least one light emitting module, a light emitting element-driver, an optical cover, a cable electrically connected between the light emitting element-driver and the at least one light emitting module, and a housing.
  • a light output device with few components and a low cost light emitting module component enables providing a light output device to a total low cost.
  • a method for manufacturing at least one light emitting module from a printed circuit board panel comprising providing the printed circuit board panel having a predefined area, separating a first elongated printed circuit board from the printed circuit board panel, the first elongated printed circuit board having at least a first section comprising electrical connections and being configured for receiving at least one light emitting element, and at least a second section comprising electrical connections, wherein the first section is wider than the second section, arranging at least one light emitting element on the first section of the first separated printed circuit board, and bending, laterally, a separated first printed circuit board into a predetermined shape.
  • the method may further comprise separating a second elongated printed circuit board from the printed circuit board panel, the second elongated printed circuit board having a complimentary shape with respect to the first elongated printed circuit board, and is arranged in a shifted manner at the printed circuit board panel such that a first section of the first elongated printed circuit board is arranged to match a second section of the second elongated printed circuit board, thereby reducing unused areas of the printed circuit board panel, arranging at least one light emitting element on at least one first section of the second elongated printed circuit board, and, bending the second separated printed circuit boards laterally into a predetermined shape.
  • the second elongated printed circuit board in this embodiment having a complimentary shape compared to the first elongated printed circuit board, will enable the possibility to arrange the first elongated printed circuit board and second elongated circuit board in a shifted manner relative to each other, whereby they as such cover a substantially rectangular area of the printed circuit board panel, thereby minimizing the amount of material wasted from the printed circuit board panel and decreasing the overall cost of producing a light emitting module.
  • Fig. 1 is a perspective view of a printed circuit board panel comprising printed circuit boards according to the present invention
  • Fig. 2 is a plane view zoom of the printed circuit board panel in Fig. 1;
  • Fig. 3 is a flow chart of a method for manufacturing a light emitting module according to the present invention.
  • Fig. 4 is perspective views of the components during the steps for manufacturing a light emitting module according to the present invention.
  • Fig. 1 shows a perspective view of a printed circuit board panel 100, the printed circuit board panel 100 being substantially rectangular in shape, where the
  • the printed circuit board panel 100 comprises at least a first printed circuit board 102 and a second printed circuit board 104, where both the first printed circuit board 102 and the second printed circuit board 104 are substantially elongated.
  • the first printed circuit board 102 and the second printed circuit board 104 comprise alternating first and second sections along their length, where the first section is wider compared to the second section.
  • the first wider section comprises electrical connections and is configured to receive at least one light emitting element, whereas the second thinner section (typically) only comprises electrical connections (i.e. being too thin to receive a light emitting element).
  • the printed circuit board panel 100 is a metal core printed circuit board (MCPCB).
  • MCPCB metal core printed circuit board
  • a plane view zoom of the printed circuit board panel 100 is shown, where a first printed circuit board 102 and a second printed circuit board 104 are marked by different shadings.
  • the second printed circuit board 104 is essentially a mirror (shape) of the first printed circuit board 102 and arranged in a shifted manner in such a way that they together cover an essentially rectangular shape of the printed circuit board panel 100.
  • the essentially rectangular shape covered by a first printed circuit board 102 and a second printed circuit board 104 is only broken by the end portions of either a first printed circuit board 102 or a second printed circuit board 104, due to the shifted manner in which they are arranged.
  • a flowchart of a method for manufacturing at least one light emitting module from a printed circuit board panel 100 comprising a first elongated printed circuit board 102 and a second elongated printed circuit board 104, and a perspective view of the components of each step in the process is shown.
  • a printed circuit board panel 100 is provided, and shapes corresponding to a first printed circuit board 102 and a second printed circuit board 104 are defined on the printed circuit board panel 100 as discussed above. Note that a large number of shapes corresponding to a first printed circuit board 102 and a second printed circuit board 104 may be defined on the printed circuit board panel 100 when defined according to the present invention.
  • step S2 a first elongated printed circuit board 102 and a second elongated printed circuit board 104 are separated from the printed circuit board panel 100.
  • the separation can be performed by an ordinary method or tool for separating pieces of printed circuit board from a larger printed circuit board panel, such as for example by stamping or cutting.
  • the length of a first printed circuit board 102 and a second printed circuit board 104 is in an embodiment 470mm.
  • the first and second printed circuit boards (102, 104) comprise alternating wider and thinner section as described earlier, where the width of the first wider section for example is 7mm and the width of the second thinner section typically is 3mm.
  • the first printed circuit board 102 and the second printed circuit board 104 will be referred to as the printed circuit board 200, since they are at this point in the process for all intents and purposes interchangeable.
  • the printed circuit board 200 will further be formed by a plurality of v-shaped cut-outs on an outer edge 202 and a plurality of v-shaped cut-outs on an inner edge 204 of the second thinner section.
  • the plurality of v-shaped cut-outs on the outer edge 202 and plurality of v-shaped cut-outs on the inner edge 204 will improve the possibility of bending the printed circuit board 200 in the later stages of the process.
  • 3 is two, but fewer v-shaped cut-outs or a larger number of v-shaped cut-outs are possible.
  • An example of the depth of the v-shaped cut-outs on the inner edge 202 and the v-shaped cut-outs on the outer edge 204 is 0.5mm.
  • step S4 a plurality of light emitting elements 206 are arranged and mounted on the first wider sections of the printed circuit board 200.
  • the wider sections will allow for different types of light emitting elements to be arranged and mounted, furthermore the larger area provided by the wider section will allow heat conduction through the printed circuit board 200 and thereby the possibility to dissipate heat produced, in use, by the light emitting elements 206.
  • step S5 the printed circuit board 200 (now comprising light emitting elements 206) is bent laterally, that is along the printed circuit boards 200 width, in such a way that the light emitting elements 206 are arranged on an inner concave side of the bent printed circuit board 206, now represented as light emitting module 208.
  • the light emitting module 208 which is shown is bent into a ring-shape; a ring-shape will provide the possibility of a uniform light distribution from the light emitting module 208 comprising light emitting elements 206.
  • the diameter of the ring shape typically is 130-150mm.
  • the PCBs may have fewer or more light emitting elements, or the physical dimension i.e. the size of all parts may be altered. Parts of the system may be omitted, interchanged or arranged in various ways, not affecting the general inventive concept. Further it is possible to bend the printed circuit board into other shapes than a ring, for example triangular or elliptical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

La présente invention concerne un module électroluminescent (208) comprenant une pluralité d'éléments électroluminescents (206) ainsi qu'un circuit imprimé (102, 104, 200) de forme sensiblement allongée, ledit circuit imprimé (102, 104, 200) comprenant au moins un première section dotée de branchements électriques et étant conçu pour recevoir au moins un élément électroluminescent de la pluralité d'éléments électroluminescents (206) ainsi qu'au moins une seconde section dotée de branchements électriques, la première section étant plus large que la seconde section et le circuit imprimé étant tordu de manière latérale afin d'adopter une forme prédéterminée.
PCT/IB2014/060247 2013-03-29 2014-03-28 Circuit imprimé pour un module électroluminescent à diodes Ceased WO2014155347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013073500 2013-03-29
CNPCT/CN2013/073500 2013-03-29

Publications (1)

Publication Number Publication Date
WO2014155347A1 true WO2014155347A1 (fr) 2014-10-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/060247 Ceased WO2014155347A1 (fr) 2013-03-29 2014-03-28 Circuit imprimé pour un module électroluminescent à diodes

Country Status (1)

Country Link
WO (1) WO2014155347A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015206324A1 (de) * 2015-04-09 2016-10-13 H4X E.U. Flächiger Leuchtmittelträger, Verfahren zum Herstellen eines eine vorbestimmte Biegung aufweisenden flächigen Leuchtmittelträgers sowie Beleuchtungsvorrichtung
WO2020089146A1 (fr) * 2018-10-29 2020-05-07 Signify Holding B.V. Dispositif électroluminescent comprenant des sources de lumière à semi-conducteurs
WO2021037815A1 (fr) * 2019-08-28 2021-03-04 Signify Holding B.V. Système de génération d'agencement, procédé correspondant et programme informatique pour générer un agencement d'une carte de circuit imprimé

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439818A (en) * 1983-02-25 1984-03-27 Scheib Joseph J Flexible light display with evenly distributed illumination
NL9000279A (nl) * 1990-02-05 1991-09-02 Ericsson Telecommunicatie Bv Buigzame gedrukte bedradingskaart met een substraat van stijf materiaal.
DE19712879A1 (de) 1997-03-27 1998-10-01 Turck Werner Kg Verfahren zum Herstellen einer Schaltung und zugehöriges Nutzen
JP2004103993A (ja) * 2002-09-12 2004-04-02 Ichikoh Ind Ltd Ｌｅｄ設置用フレキシブル基板及びそのｌｅｄ設置用フレキシブル基板を用いた車両用灯具
DE102005050254A1 (de) * 2005-10-20 2007-04-26 Dieter Leber Flexible Leuchteinrichtung als Mehrfachanordnung
US20120081630A1 (en) * 2009-06-15 2012-04-05 Sharp Kabushiki Kaisha Light source unit, lighting device, display device, television receiver, and method of manufacturing board for light source unit
US20120217520A1 (en) * 2009-11-02 2012-08-30 Seong Gon Baik Led mount bar capable of freely forming curved surfaces thereon
WO2012127355A1 (fr) * 2011-03-22 2012-09-27 Koninklijke Philips Electronics N.V. Substrat permettant de monter une pluralité d'éléments électroluminescents
WO2012176491A1 (fr) * 2011-06-22 2012-12-27 パナソニック株式会社 Carte de montage et module électroluminescent

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439818A (en) * 1983-02-25 1984-03-27 Scheib Joseph J Flexible light display with evenly distributed illumination
NL9000279A (nl) * 1990-02-05 1991-09-02 Ericsson Telecommunicatie Bv Buigzame gedrukte bedradingskaart met een substraat van stijf materiaal.
DE19712879A1 (de) 1997-03-27 1998-10-01 Turck Werner Kg Verfahren zum Herstellen einer Schaltung und zugehöriges Nutzen
JP2004103993A (ja) * 2002-09-12 2004-04-02 Ichikoh Ind Ltd Ｌｅｄ設置用フレキシブル基板及びそのｌｅｄ設置用フレキシブル基板を用いた車両用灯具
DE102005050254A1 (de) * 2005-10-20 2007-04-26 Dieter Leber Flexible Leuchteinrichtung als Mehrfachanordnung
US20120081630A1 (en) * 2009-06-15 2012-04-05 Sharp Kabushiki Kaisha Light source unit, lighting device, display device, television receiver, and method of manufacturing board for light source unit
US20120217520A1 (en) * 2009-11-02 2012-08-30 Seong Gon Baik Led mount bar capable of freely forming curved surfaces thereon
WO2012127355A1 (fr) * 2011-03-22 2012-09-27 Koninklijke Philips Electronics N.V. Substrat permettant de monter une pluralité d'éléments électroluminescents
WO2012176491A1 (fr) * 2011-06-22 2012-12-27 パナソニック株式会社 Carte de montage et module électroluminescent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015206324A1 (de) * 2015-04-09 2016-10-13 H4X E.U. Flächiger Leuchtmittelträger, Verfahren zum Herstellen eines eine vorbestimmte Biegung aufweisenden flächigen Leuchtmittelträgers sowie Beleuchtungsvorrichtung
DE102015206324B4 (de) * 2015-04-09 2019-06-06 H4X E.U. Anordnung mit einem auf einem Trägerblech angeordneten flächigen Leuchtmittelträger, Verfahren zum Herstellen eines eine vorbestimmte Biegung aufweisenden flächigen Leuchtmittelträgers sowie Beleuchtungsvorrichtung
WO2020089146A1 (fr) * 2018-10-29 2020-05-07 Signify Holding B.V. Dispositif électroluminescent comprenant des sources de lumière à semi-conducteurs
WO2021037815A1 (fr) * 2019-08-28 2021-03-04 Signify Holding B.V. Système de génération d'agencement, procédé correspondant et programme informatique pour générer un agencement d'une carte de circuit imprimé

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