EP3399230B1 - Beleuchtungsmodul, verfahren zur herstellung davon und leuchtende beschilderungsvorrichtung mit solch einem beleuchtungsmodul - Google Patents

Beleuchtungsmodul, verfahren zur herstellung davon und leuchtende beschilderungsvorrichtung mit solch einem beleuchtungsmodul Download PDF

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Publication number
EP3399230B1
EP3399230B1 EP18168072.9A EP18168072A EP3399230B1 EP 3399230 B1 EP3399230 B1 EP 3399230B1 EP 18168072 A EP18168072 A EP 18168072A EP 3399230 B1 EP3399230 B1 EP 3399230B1
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EP
European Patent Office
Prior art keywords
dimensional structure
light radiation
radiation sources
main axis
signage device
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EP18168072.9A
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English (en)
French (fr)
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EP3399230A1 (de
Inventor
Alberto ZANOTTO
Simon BOBBO
Lorenzo Baldo
Roberto DIDONE'
Valerio MICHIELAN
Matteo CALDON
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
Osram SpA
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Osram GmbH
Osram SpA
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Publication of EP3399230A1 publication Critical patent/EP3399230A1/de
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Classifications

    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/002—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips making direct electrical contact, e.g. by piercing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0404—Signs, boards or panels, illuminated from behind the insignia the light source being enclosed in a box forming the character of the sign
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/40—Light sources with three-dimensionally disposed light-generating elements on the sides of polyhedrons, e.g. cubes or pyramids
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/70—Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form

Definitions

  • the present description refers to lighting devices.
  • the invention relates to luminous signage devices including lighting modules.
  • the invention also relates to a method for producing signage devices.
  • LED lighting modules have increasingly spread over the last few years.
  • the LED lighting modules have been used in various applications, for example general lighting, automotive lighting, luminous signage etc.
  • the various applications pose different requirements, and the need is felt of a universal LED module being adapted to meet the requirements in a variety of different applications.
  • the lighting modules may be enclosed within a block of acrylic material, wherein three sides of the block may be coated with a reflective material in order to provide a uniform light radiation distribution on the letters or symbols of the luminous signage device.
  • two systems are available in the state of the art: one may envisage the arrangement of a plurality of lighting modules below the light emission surface of the signage device, while the other may include the use of a complex system in order to produce multiple reflections and mix the light radiation inside the luminous signage device.
  • US2016178166-A1 discloses an LED module including a plurality of light-emitting diodes disposed only on a lateral surface of a right cone, a right pyramid, a truncated right cone, or a truncated right pyramid.
  • DE10350913-A1 discloses a flexible circuit board having diode regions laminated on a support.
  • One or more embodiments aim at providing a luminous signage device including a lighting module offering a better light distribution uniformity.
  • the invention also relates to a method for producing a luminous signage device including one or more lighting modules.
  • reference 10 denotes a planar printed circuit board.
  • the printed circuit board 10 may have a first surface 12, on which a plurality of electrically powered light radiation sources 14 may be fixed.
  • the electrically powered light radiation sources 14 may be solid-state light radiation sources, such as LED sources.
  • the light radiation sources 14 may have respective light emission surfaces 16, parallel to the first surface 12 of printed circuit board 10.
  • the light radiation sources 14 may be top emission LEDs.
  • the light radiation sources 14 may be fixed onto respective rigid portions 18 of the printed circuit board 10.
  • Connector devices 22 may be fixed onto a rigid portion 18 devoid of light radiation sources 14.
  • the printed circuit board 10 may also host electrical driving components (not shown) for driving and controlling the light radiation sources 14.
  • the light radiation sources 14, the electrical connectors 22 and the electronic driving components may be attached to the printed circuit board 10 by soldering, according to techniques known in the field of production of LED lighting devices.
  • the printed circuit board 10 may be folded into a three-dimensional structure 24, having three or more planar faces 26 formed by respective rigid portions 18 of the printed circuit board 10.
  • the planar faces 26 of the three-dimensional structure 24 may extend around a main axis A.
  • the rigid portion 18 carrying the connector devices 22 may be orthogonal to the main axis A.
  • the flexible portions 20 of the printed circuit board 10 may form rounded corners between the planar faces 26 of the three-dimensional structure 24.
  • the three-dimensional structure 24 may be folded around a rigid support 28 located within the three-dimensional structure 24.
  • the three-dimensional structure 24 may be attached to the rigid support 28 e.g. by gluing.
  • the rigid support 28 may have the shape of a three-dimensional solid figure having a polygonal shape, e.g. triangular, square, pentagonal etc.
  • the three-dimensional structure 24 may have a cubic or parallelepiped shape, having four faces 26 oriented at 90° one with respect to the other.
  • the lighting module 32 may include three or more electrically powered light radiation sources 14, fixed to respective faces 26 of the three-dimensional structure 24.
  • the light radiation sources 24 may have respective emission surfaces 16 facing outwards of the three-dimensional structure 24.
  • the light radiation sources may be angularly equidistant from each other in a plane orthogonal to the main axis A, along an angle of 360°.
  • the angular distance between the light radiation sources 14 may amount to 360°/n, wherein n is the number of faces 26 of the three-dimensional structure 24 parallel to main axis A.
  • the three-dimensional structure 24 may be fixed to a rigid support 28 located within the three-dimensional structure 24.
  • the three-dimensional structure 24 may include a base 34 orthogonal to the main axis A and carrying connector devices 22.
  • the connector devices 22 may be IDCs (Insulation-Displacement Connectors) provided with cutting edges 36, between which an insulated cable 38 may be inserted. As shown in Figures 7 and 8 , when the cable 38 is inserted between the cutting edges 36 of contacts 22, the edges 36 cut the insulating coating of cable 38 and establish an electrical connection with the conductive portion of cable 38.
  • IDCs Insulation-Displacement Connectors
  • the lighting module 32 may be devoid of light radiation sources on a surface orthogonal to main axis A opposed to base 34.
  • the three-dimensional structure (24) may include three or more planar faces 26 in a plane containing said main axis (A) and carrying respective electrically-powered light radiation sources (14) equidistant from each other.
  • the lighting module 32 may have a face orthogonal to axis A and opposite base 34 carrying a light radiation source 14.
  • this arrangement may be obtained starting from a T-shaped planar printed circuit board, as shown in Figure 9 , which may then be folded so as to form a three-dimensional structure having two opposite faces orthogonal to main axis A.
  • casing 42 may have a reflective side wall 50.
  • the reflective side wall 50 may be the outer surface of casing 42.
  • the cavity 44 may also have a bottom wall opposed to the light emitting wall 46. In one or more embodiments, also the bottom wall of cavity 44 may be reflective.
  • the lighting modules 32 may emit light radiation having a distribution over 360° around the respective main axes A.
  • the light radiation emitted by the lighting modules 32 may be parallel to the light emitting wall 46 of the luminous signage device 40.
  • the light radiation generated by the lighting modules 32 may be reflected by the reflective outer surface 50 and by the bottom wall of cavity 44.
  • the reflected light radiation may illuminate the light emitting wall 46 of the signage device 40 with a uniform distribution. This distribution may avoid or reduce light spots and/or dark areas on the light emitting wall 46.
  • the light radiation generated by the lighting modules 32 may therefore be mainly directed onto the reflective walls of cavity 44, without directly illuminating the light emitting wall 46 of the signage device 40.
  • the lighting modules 32 may be fixed in the casing 42 of the signage device 40 by means of an additional encapsulating layer. In one or more embodiments, the lighting modules 32 may be glued to the casing 42 or to the light emitting wall 46 of the signage device 40.
  • the three-dimensional structure may include three or more faces (e.g. 26) in a plane containing said main axis (e.g. A) and carrying respective electrically powered light radiation sources (e.g. 14) equidistant from each other.
  • the printed circuit board (e.g. 10) includes three or more rigid portions (e.g. 18) forming said faces (e.g. 26) and connected together by flexible portions (e.g. 20).
  • the three-dimensional structure may include an upper face (e.g. 26) perpendicular to the main axis (e.g. A) and carrying a respective electrically powered light radiation source (e.g. 14).
  • the three-dimensional structure (e.g. 24) may be encapsulated in a polymeric material (e.g. 30).
  • One or more embodiments may concern a method for producing a lighting module (e.g. 32), including:
  • the method may include encapsulating said three-dimensional structure (e.g. 24) into a polymeric material (e.g. 32).
  • One or more embodiments may concern a luminous signage device (e.g. 40) including a casing (e.g. 42) having a cavity (e.g. 44) and a light emitting wall (e.g. 46) that covers one side of said cavity (e.g. 44), including one or more lighting modules (e.g. 32) arranged in said cavity (e.g. 44), with said main axis (e.g. A) orthogonal to said light emitting wall (e.g. 46) .
  • a luminous signage device e.g. 40
  • a casing e.g. 42
  • a cavity e.g. 44
  • a light emitting wall e.g. 46
  • said main axis e.g. A
  • the casing e.g. 42
  • a reflective side wall e.g. 50
  • said emitting surfaces (e.g. 16) of said light radiation sources (e.g. 14) are directed towards a side wall (e.g. 48) of the cavity (e.g. 44) of the casing (e.g. 42).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (10)

  1. Beleuchtete Beschilderungsvorrichtung (40), umfassend:
    ein Gehäuse (42) mit einem Hohlraum (44), mindestens einer reflektierenden Seitenwand (50) und einer Licht emittierenden Wand (46), die eine Seite des Hohlraums (44) bedeckt,
    - mindestens ein Beleuchtungsmodul (32), umfassend:
    - eine planare gedruckte Schaltung (10), die in eine dreidimensionale Struktur (24) mit drei oder mehr planaren Flächen (26), die sich um eine Hauptachse (A) erstrecken, gefaltet ist,
    - drei oder mehr elektrisch betriebene Lichtstrahlungsquellen (14), die an jeweiligen Flächen (26) der dreidimensionalen Struktur (24) befestigt sind und jeweilige Licht emittierende Oberflächen (16) aufweisen, die von der dreidimensionalen Struktur (24) nach außen gewandt sind,
    wobei die Lichtstrahlungsquellen (14) in einer Ebene orthogonal zu der Hauptachse (A) entlang eines Winkels von 360° winkelmäßig äquidistant voneinander sind, wobei das mindestens eine Beleuchtungsmodul (32) in dem Hohlraum (44) angeordnet ist, wobei die Hauptachse (A) orthogonal zu der Licht emittierenden Wand (46) ist und die emittierenden Oberflächen (16) der Lichtstrahlungsquellen (14) zu der Seitenwand (50) hin gerichtet sind,
    dadurch gekennzeichnet, dass die gedruckte Schaltungsplatine (10) drei oder mehr starre Abschnitte (18) umfasst, die die Flächen (26) bilden und durch flexible Abschnitte (20) miteinander verbunden sind.
  2. Beleuchtete Beschilderungsvorrichtung (40) nach Anspruch 1, wobei die dreidimensionale Struktur (24) drei oder mehr planare Flächen (26) in einer Ebene umfasst, die die Hauptachse (A) enthält und jeweilige elektrisch betriebene Lichtstrahlungsquellen (14) äquidistant voneinander trägt.
  3. Beleuchtete Beschilderungsvorrichtung (40) nach einem der vorhergehenden Ansprüche, wobei die dreidimensionale Struktur (24) an einem starren Träger (28) befestigt ist, der sich innerhalb der dreidimensionalen Struktur (24) befindet.
  4. Beleuchtete Beschilderungsvorrichtung (40) nach einem der vorhergehenden Ansprüche, wobei die dreidimensionale Struktur (24) eine Basis (34) umfasst, die orthogonal zu der Hauptachse (A) ist und Verbindervorrichtungen (22) trägt.
  5. Beleuchtete Beschilderungsvorrichtung (40) nach einem der vorhergehenden Ansprüche, wobei die dreidimensionale Struktur (24) eine obere Fläche (26) umfasst, die senkrecht zu der Hauptachse (A) ist und eine jeweilige elektrisch betriebene Quelle von Lichtstrahlung (14) trägt.
  6. Beleuchtete Beschilderungsvorrichtung (40) nach einem der vorhergehenden Ansprüche, wobei die dreidimensionale Struktur (24) in einem Polymermaterial (30) eingekapselt ist.
  7. Beleuchtete Beschilderungsvorrichtung (40) nach einem der vorhergehenden Ansprüche, wobei die Quellen (14) für Lichtstrahlung Top-Emission-LED sind.
  8. Verfahren zum Herstellen einer beleuchteten Beschilderungsvorrichtung (40), umfassend:
    - Herstellen mindestens eines Beleuchtungsmoduls (32) durch:
    - Bereitstellen einer planaren gedruckten Schaltungsplatine (10), die drei oder mehr elektrisch betriebene Lichtstrahlungsquellen (14) trägt,
    - Falten der planaren gedruckten Schaltungsplatine (10) in eine dreidimensionalen Struktur (24) mit drei oder mehr planaren Flächen (26), die sich um eine Hauptachse (A) erstrecken,
    wobei die Lichtstrahlungsquellen (14) an jeweiligen Flächen (26) befestigt sind und jeweilige Emissionsoberflächen (16) aufweisen, die von der dreidimensionalen Struktur (24) nach außen gewandt sind,
    wobei in der dreidimensionalen Struktur (24) die Lichtstrahlungsquellen (14) in einer Ebene orthogonal zu der Hauptachse (A) entlang eines Winkels von 360° winkelmäßig äquidistant voneinander sind,
    wobei die gedruckte Schaltungsplatine (10) drei oder mehr starre Abschnitte (18) umfasst, die die Flächen (26) bilden und durch flexible Abschnitte (20) miteinander verbunden sind,
    - Bereitstellen eines Gehäuses (42) mit einem Hohlraum (44), mindestens einer reflektierenden Seitenwand (50) und einer Licht emittierenden Wand (46), die eine Seite des Hohlraums (44) bedeckt, und
    - Anordnen des mindestens einen Beleuchtungsmoduls (32) in dem Hohlraum (44), wobei die Hauptachse (A) orthogonal zu der Licht emittierenden Wand (46) ist und die emittierenden Oberflächen (16) der Lichtstrahlungsquellen (14) zu der Seitenwand (50) hin gerichtet sind.
  9. Verfahren nach Anspruch 8, umfassend Befestigen der dreidimensionalen Struktur (24) an einem starren Träger (28), der sich innerhalb der dreidimensionalen Struktur (24) befindet.
  10. Verfahren nach Anspruch 8 oder Anspruch 9, umfassend Einkapseln der dreidimensionalen Struktur (24) in einem Polymermaterial (32).
EP18168072.9A 2017-04-26 2018-04-18 Beleuchtungsmodul, verfahren zur herstellung davon und leuchtende beschilderungsvorrichtung mit solch einem beleuchtungsmodul Active EP3399230B1 (de)

Applications Claiming Priority (1)

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IT201700045168 2017-04-26

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EP3399230A1 EP3399230A1 (de) 2018-11-07
EP3399230B1 true EP3399230B1 (de) 2022-05-25

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10350913B4 (de) * 2003-10-31 2005-11-03 Osram Opto Semiconductors Gmbh Leuchtdioden-Modul und Verfahren zu dessen Herstellung
FR2949842B1 (fr) * 2009-09-09 2011-12-16 Peugeot Citroen Automobiles Sa Feu pour vehicule automobile
GB2485745B (en) * 2009-09-27 2013-11-20 Dongguan Light Source Opto Tech Co Ltd LED device for three-dimensional illumination
US20120238045A1 (en) * 2010-12-22 2012-09-20 E. I. Du Pont De Nemours And Company Three dimensional light emitting diode systems, and compositions and methods relating thereto
US20130062631A1 (en) * 2011-09-13 2013-03-14 Lustrous Green Technology Of Lighting Light emitting structure, light emitting module, and light emitting device
EP2722589B1 (de) * 2012-10-16 2020-02-26 The Sloan Company, Inc. dba Sloanled Buchstabenbeleuchtung mit einem geneigten strahler
WO2015020106A1 (ja) * 2013-08-09 2015-02-12 住友電工プリントサーキット株式会社 Ｌｅｄモジュール及びｌｅｄ照明器具

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