EP3399230B1 - Module d'éclairage, son procédé de fabrication et dispositif de signalisation lumineuse comprenant un tel module d'éclairage - Google Patents

Module d'éclairage, son procédé de fabrication et dispositif de signalisation lumineuse comprenant un tel module d'éclairage 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
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.)
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Application number
EP18168072.9A
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German (de)
English (en)
Other versions
EP3399230A1 (fr
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
Original Assignee
Osram GmbH
Osram SpA
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Publication of EP3399230A1 publication Critical patent/EP3399230A1/fr
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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)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Claims (10)

  1. Un dispositif de signalétique lumineuse (40) comprenant :
    - un boîtier (42) ayant une cavité (44), au moins une paroi latérale réfléchissante (50), et une paroi émettrice de lumière (46) qui recouvre un côté de ladite cavité (44),
    - au moins un module d'éclairage (32) comprenant :
    - un circuit imprimé plan (10) replié en une structure tridimensionnelle (24) avec trois ou plus faces planes (26) s'étendant autour d'un axe principal (A),
    - trois ou plus sources de rayonnement lumineux alimentées électriquement (14) fixées à des faces respectives (26) de ladite structure tridimensionnelle (24) et ayant des surfaces émettrices de lumière respectives (16) tournées vers l'extérieur de ladite structure tridimensionnelle (24),
    dans lequel les sources de rayonnement lumineux (14) sont angulairement équidistantes les unes des autres dans un plan perpendiculaire audit axe principal (A) suivant un angle de 360°, ledit au moins un module d'éclairage (32) étant disposé dans ladite cavité (44) avec ledit axe principal (A) perpendiculaire à ladite paroi émettrice de lumière (46) et avec lesdites surfaces émettrices (16) desdites sources de rayonnement lumineux (14) dirigées vers ladite paroi latérale (50), caractérisé en ce que ladite carte de circuit imprimé (10) comprend trois ou plus parties rigides (18) formant lesdites faces (26) et reliées ensemble par des parties flexibles (20).
  2. Un dispositif de signalétique lumineuse (40) selon la revendication 1, dans lequel ladite structure tridimensionnelle (24) comprend trois ou plus faces planes (26) dans un plan contenant ledit axe principal (A) et portant des sources de rayonnement lumineux alimentées électriquement respectives (14) équidistantes les unes des autres.
  3. Un dispositif de signalétique lumineuse (40) selon l'une des revendications précédentes, dans lequel ladite structure tridimensionnelle (24) est fixée à un support rigide (28) situé à l'intérieur de la structure tridimensionnelle (24).
  4. Un module de dispositif de signalétique lumineuse (40) selon l'une des revendications précédentes, dans lequel ladite structure tridimensionnelle (24) comprend une base (34) perpendiculaire audit axe principal (A) et portant des dispositifs de connecteur (22).
  5. Un dispositif de signalétique lumineuse (40) selon l'une des revendications précédentes, dans lequel ladite structure tridimensionnelle (24) comprend une face supérieure (26) perpendiculaire audit axe principal (A) et portant une source de rayonnement lumineux alimentée électriquement respective (14).
  6. Un dispositif de signalétique lumineuse (40) selon l'une des revendications précédentes, dans lequel ladite structure tridimensionnelle (24) est encapsulée dans un matériau polymère (30).
  7. Un dispositif de signalétique lumineuse (40) selon l'une des revendications précédentes, dans lequel lesdites sources de rayonnement lumineux (14) sont des LED à émission par le dessus.
  8. Un procédé de production d'un dispositif de signalétique lumineuse (40), comprenant :
    - la production d'au moins un module d'éclairage (32) par :
    - l'obtention d'une carte de circuit imprimé plane (10) portant trois ou plus sources de rayonnement lumineux alimentées électriquement (14),
    - le pliage de ladite carte de circuit imprimé plane (10) en une structure tridimensionnelle (24) avec trois ou plus faces planes (26) s'étendant autour d'un axe principal (A),
    dans lequel lesdites sources de rayonnement lumineux (14) sont fixées à des faces respectives (26) et ont des surfaces d'émission respectives (16) tournées vers l'extérieur de ladite structure tridimensionnelle (24), dans lequel, dans ladite structure tridimensionnelle (24), lesdites sources de rayonnement lumineux (14) sont angulairement équidistantes les unes des autres dans un plan perpendiculaire audit axe principal (A) selon un angle de 360°,
    dans lequel ladite carte de circuit imprimé (10) comprend trois ou plus parties rigides (18) formant lesdites faces (26) et reliées ensemble par des parties flexibles (20),
    - l'obtention d'un boîtier (42) ayant une cavité (44), au moins une paroi latérale réfléchissante (50), et une paroi émettrice de lumière (46) qui couvre un côté de ladite cavité (44), et
    - la mise en place dudit au moins un module d'éclairage (32) dans ladite cavité (44) avec ledit axe principal (A) perpendiculaire à ladite paroi émettrice de lumière (46) et avec lesdites surfaces émettrices de lumière (16) desdites sources de rayonnement lumineux (14) tournées vers ladite paroi latérale (50).
  9. Un procédé selon la revendication 8, comprenant la solidarisation de ladite structure tridimensionnelle (24) à un support rigide (28) situé à l'intérieur de ladite structure tridimensionnelle (24).
  10. Un procédé selon la revendication 8 ou la revendication 9, comprenant l'encapsulation de ladite structure tridimensionnelle (24) dans un matériau polymère (32).
EP18168072.9A 2017-04-26 2018-04-18 Module d'éclairage, son procédé de fabrication et dispositif de signalisation lumineuse comprenant un tel module d'éclairage Active EP3399230B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT201700045168 2017-04-26

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EP3399230A1 EP3399230A1 (fr) 2018-11-07
EP3399230B1 true EP3399230B1 (fr) 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
WO2011035490A1 (fr) * 2009-09-27 2011-03-31 东莞市莱硕光电科技有限公司 Dispositif à led pour éclairage en trois dimensions
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 (fr) * 2012-10-16 2020-02-26 The Sloan Company, Inc. dba Sloanled Éclairage de lettres à émetteur incliné
CN105452765B (zh) * 2013-08-09 2018-12-25 住友电工印刷电路株式会社 Led组件和led发光装置

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