EP2986899A1 - Module de led ainsi que système d'émission de lumière - Google Patents

Module de led ainsi que système d'émission de lumière

Info

Publication number
EP2986899A1
EP2986899A1 EP14716316.6A EP14716316A EP2986899A1 EP 2986899 A1 EP2986899 A1 EP 2986899A1 EP 14716316 A EP14716316 A EP 14716316A EP 2986899 A1 EP2986899 A1 EP 2986899A1
Authority
EP
European Patent Office
Prior art keywords
leds
arrangement
led module
carrier
emitting light
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.)
Granted
Application number
EP14716316.6A
Other languages
German (de)
English (en)
Other versions
EP2986899B1 (fr
Inventor
Stephan Ebner
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2986899A1 publication Critical patent/EP2986899A1/fr
Application granted granted Critical
Publication of EP2986899B1 publication Critical patent/EP2986899B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • 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]

Definitions

  • the present invention relates to an LED module according to the preamble of
  • Claim 1 and an arrangement for emitting light with such an LED module and associated optical devices.
  • the starting point for the present invention is the currently common interconnection of LEDs on planar carrier boards to LED modules, the components of a
  • Arrangement for emitting light - preferably a substantially homogeneous light output - form.
  • One way to achieve such a substantially homogeneous light output in such light emitting devices is to choose a uniform arrangement of substantially the same LEDs on the carrier board.
  • each LED in operation is subject to substantially the same power load and thus causes approximately the same thermal load on the carrier and in the LEDs, but in the edge region of a board that heat better to the
  • the present invention is based on the object, the thermal load for an LED module, consisting of a support and LEDs located thereon to distribute more evenly, preferably in addition to reduce, and yet despite a substantially uniform for a viewer
  • an LED module which consists of an arrangement of electronically interconnected LEDs and a support for the LEDs, wherein the arrangement of the LEDs is selected such that caused by the operation of the LEDs thermal stress substantially uniformly over the carrier is distributed.
  • the choice of the arrangement of the LEDs on the carrier is characterized in particular in that the distribution of the LEDs is uneven, preferably additionally symmetrical, and that the density - i. the number of LEDs per area - the LEDs in an outer or edge region of the carrier is greater than in an inner or central region of the carrier. This choice is based on the above-mentioned finding that the heat on the support better over his
  • Edge areas can be dissipated, as is the case in the central area.
  • the carrier is also preferably designed such that the LEDs on the
  • an arrangement for emitting light which has an inventive LED module in the manner described above, and an optical device for influencing the light output.
  • an optical device for influencing the light output In the following, two different optical devices will be described, which may advantageously be combined with the LED module.
  • a first variant of a suitable optical device consists in a cell grid system consisting of trough-shaped single cells, in which the LEDs of the LED module are arranged.
  • the cell grid system is firmly installed with the LED module.
  • Each individual cell of the cell grid preferably defines a plurality of fixed ones
  • Positioning options that allow flexible positioning of the LEDs in the cell. This can be done for example by means of a positioning line, which has a certain number of LED positioning options.
  • the arrangement of the individual cells is homogeneous or has a uniform grid. Due to the inventive design of the LED module now differs, however, the number of LEDs in the individual cells.
  • the positioning possibilities are preferably designed in such a way that more LEDs can be placed in a cell which is located in an edge area of the carrier than in a cell which is located in a middle area of the carrier. With a full occupation of the carrier with LEDs, significantly more LEDs are thus to be found in the edge regions of the carrier than in the central regions.
  • the cell grid system ensures that the LEDs are not immediately visible when viewing the LED module sideways or at an angle. Accordingly, for a viewer, the inhomogeneous light output is under lateral or oblique
  • a second variant of a suitable optical device consists in a
  • Lens system which consists of an array of many lens elements and a support for the lens elements, wherein the lens elements are preferably small compared to the dimensions of the lens carrier, are close to each other and are formed substantially identical.
  • This optical device does not have to be in direct contact with the LED module but may preferably have a certain distance from it.
  • the lens elements of the lens system are arranged on a flat surface, which is aligned in particular parallel to the surface of the support of the LED module.
  • the optical axes of all lens elements are parallel to each other. This design of the lens elements is particularly advantageous for homogenizing or uniforming the light emitted by the LED module.
  • Points of light which is caused by the patchy arrangement of the LEDs on the module, is generally compensated by the dense uniform arrangement of preferably small lenses substantially. From the viewpoint of the observer, the individual uniformly arranged lenses appear as single uniformly arranged points of light, which in turn is the desired substantially homogeneous
  • Fig. 1 is a front sketch of a first embodiment of the invention
  • Arrangement for emitting light consisting of an LED module according to the invention and a cell grid system as an optical device for
  • FIG. 2 shows a sketch of the rear side of the arrangement for emitting light according to FIG. 1;
  • FIG. 3 shows a cross-sectional sketch of the arrangement for emitting light according to FIG. 1;
  • FIG. 4 shows a perspective sketch of the arrangement for emitting light according to FIG. 1;
  • FIG. 3 shows a cross-sectional sketch of the arrangement for emitting light according to FIG. 1;
  • FIG. 4 shows a perspective sketch of the arrangement for emitting light according to FIG. 1;
  • FIG. 3 shows a cross-sectional sketch of the arrangement for emitting light according to FIG. 1;
  • FIG. 4 shows a perspective sketch of the arrangement for emitting light according to FIG. 1;
  • Fig. 6 is a cross-sectional diagram of a second embodiment of a
  • Inventive arrangement for emitting light consisting of an LED module according to the invention according to FIG. 5 and a lens system as an optical device for influencing the light output.
  • Fig. 1 is a front sketch of a light-emitting device 1 is shown, which consists of an LED module 2 according to the invention and a cell grid system 4.
  • the cell grid system 4 is arranged in a conventional manner from evenly spaced
  • the LED module 2 consists of the carrier 7 and the LEDs 3.
  • the cell grid system 4 is usually placed on the LED module 2 and fixed. The arrangement is such that the LEDs 3 assigned to the respective individual cells 6 protrude into the bottom area of the cell. This ensures that the light of the LEDs 3 can be fully used for the desired light output.
  • Each individual cell 6, which preferably has dimensions in the order of about 3 to 5 cm, defines a plurality of fixed positioning possibilities, which allow flexible positioning of the LEDs 3.
  • a positioning line 5 is provided for this purpose, on each of which a certain number of LEDs 3 are placed.
  • the edge areas here - unlike usual - several LEDs 3 are provided within a cell.
  • the carrier 7 is essentially preferably flat.
  • the number of LEDs 3 placed within a particular single cell 6 depends on the particular position of the single cell 6 under consideration. The more central the single cell 6 is with respect to the surface of the LED module 2, the fewer LEDs 3 are provided, although each cell 6 is provided at least one LED.
  • FIG. 3 is a cross-sectional diagram of the light-emitting device 1 of Fig. 1 is shown. It can be seen that the individual cells 6 are slightly inclined upward in this particular example. The application of the invention can be easily applied to other positions of the individual cells 6. Furthermore, in this illustration, the trough shape of the individual cells 6 can be seen, which of course the cells of the grid could also have a circular shape or an oval shape.
  • FIG. 4 shows a perspective sketch of the light output device 1 from FIGS. 1 to 3.
  • the occupation of the cells 6 according to the invention with LEDs 3 or the uneven arrangement of the LEDs 3 results in less heat being generated by the LEDs 3 in the middle or central area of the module 2. Since on the other side in the edge region of the module 2, the heat can be better dissipated, there is a total of about uniform thermal load over the entire area. At the same time, due to the effect of the grid, the different light output across the cells 6 is difficult to recognize. Since at least one LED 3 per cell is provided, the overall result is a substantially homogeneous appearance with respect to the light output.
  • an LED module 8 consisting of a carrier 9 in an elongated, rectangular and planar embodiment and an array of LEDs 10, consisting of two rows of twenty LEDs 10.
  • the design of the carrier. 9 Of course, this is not just limited to this form. Further, the LED module 8 has a
  • Symmetry axis in an oblong direction At a narrow end of the carrier 9 electrical contacts 11 for the power supply of the LED module 8 are shown.
  • the density of the LEDs 10 in an outer region of the carrier 9 is higher than in a middle region in order to more evenly distribute the thermal load of the carrier 9 during operation, taking into account the more efficient heat conduction in the edge region of the board.
  • Fig. 6 is a cross-sectional diagram of an embodiment of a
  • inventive arrangement for emitting light 13 shown consisting of an inventive LED module 8 of FIG. 5 in a simplified representation and a lens system 14 as an optical device for influencing the light output.
  • the lens system 14 consists of a lens carrier 15, which by a
  • plate-shaped, translucent element is formed, in which lens elements 16 are embedded.
  • the lens elements 16 are small compared to the dimensions of the lens carrier 15. Further, the lens elements 16 are close to each other and also preferably the lens elements 16 are substantially identical. Further preferably, the optical axes of all lens elements 16 are aligned parallel to each other.
  • the LED module 8 and the lens system 14 do not necessarily have the same shape. The relative arrangement between the LED module 8 and the lens system 14 is selected such that as much light as possible is as homogeneous as possible
  • the light-emitting devices 1 and 13 can be combined with one another in any desired manner. This is of course to be understood in the context of technical feasibility and advantage or usefulness. The focus is finally on the thermally optimized design of optical systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un module de LED (2, 8), constitué d'un agencement de LED (3, 10) formant un circuit électronique et d'un support (7, 9) pour les LED, dans lequel la densité des LED (3, 10) est choisie de telle sorte que la contrainte thermique subie par le support (7, 9) lorsque les LED (3, 10) fonctionnent est répartie de manière sensiblement uniforme sur le support (7, 9).
EP14716316.6A 2013-04-11 2014-04-09 Module de led ainsi que système d'émission de lumière Active EP2986899B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013206390.3A DE102013206390A1 (de) 2013-04-11 2013-04-11 LED-Modul sowie Anordnung zur Lichtabgabe
PCT/EP2014/057146 WO2014166991A1 (fr) 2013-04-11 2014-04-09 Module de led ainsi que système d'émission de lumière

Publications (2)

Publication Number Publication Date
EP2986899A1 true EP2986899A1 (fr) 2016-02-24
EP2986899B1 EP2986899B1 (fr) 2019-01-02

Family

ID=50473310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14716316.6A Active EP2986899B1 (fr) 2013-04-11 2014-04-09 Module de led ainsi que système d'émission de lumière

Country Status (3)

Country Link
EP (1) EP2986899B1 (fr)
DE (1) DE102013206390A1 (fr)
WO (1) WO2014166991A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022205568A1 (de) 2022-06-01 2023-12-07 Continental Automotive Technologies GmbH Anzeigevorrichtung und Fortbewegungsmittel

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003331604A (ja) * 2002-05-16 2003-11-21 Harison Toshiba Lighting Corp バックライトユニット
GB2417824A (en) * 2004-09-02 2006-03-08 Custom Interconnect Ltd LED light source
DE202006015506U1 (de) * 2006-10-10 2007-01-04 Li, Chia-Mao Beleuchtungsvorrichtung
JP5208597B2 (ja) * 2008-07-01 2013-06-12 富士フイルム株式会社 照明装置、撮像装置
CN101446404A (zh) * 2008-12-29 2009-06-03 浙江晶日照明科技有限公司 一种led路灯及led路灯的照射光线调整方法
JP2011134474A (ja) * 2009-12-22 2011-07-07 Sharp Corp 面発光装置
US8581269B2 (en) * 2010-02-10 2013-11-12 Lumen Dynamics Group Inc. Modular high density LED array light sources
DE102013201950A1 (de) * 2013-02-06 2014-08-07 Osram Gmbh Rasterleuchte mit Reflektorzellen und Halbleiterlichtquellen

Also Published As

Publication number Publication date
DE102013206390A1 (de) 2014-10-16
EP2986899B1 (fr) 2019-01-02
WO2014166991A1 (fr) 2014-10-16

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