EP2458260A1 - LED module for lighting purposes - Google Patents
LED module for lighting purposes Download PDFInfo
- Publication number
- EP2458260A1 EP2458260A1 EP10405227A EP10405227A EP2458260A1 EP 2458260 A1 EP2458260 A1 EP 2458260A1 EP 10405227 A EP10405227 A EP 10405227A EP 10405227 A EP10405227 A EP 10405227A EP 2458260 A1 EP2458260 A1 EP 2458260A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- led
- leds
- coating
- led module
- group
- 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.)
- Withdrawn
Links
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 10
- 238000009416 shuttering Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
-
- 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
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
-
- 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 invention relates to an LED module for lighting purposes, which is equipped with LED's with different color temperatures.
- the LEDs of a first LED group and the LEDs of a second LED group are arranged in a systematically mixed distribution on one another on the LED module.
- Such a mixed distribution may e.g. be formed of two mutually parallel rows alternately or in a checkerboard manner.
- the applicant is a method for operating a LED module for lighting purposes, which is equipped with a first LED group and a second LED group, wherein the two LED groups have different color temperatures.
- the method makes it possible to vary the light emitted by the LED module in its color temperature, while the illumination intensity remains constant on a surface to be irradiated, ie without dimming.
- the illuminance on a surface to be irradiated can be varied by means of dimming.
- a third program makes it possible to vary the light emitted by the LED module on a surface to be irradiated with variable illuminance by means of dimming at the same time in its color temperature.
- Another subject of said European patent application is a circuit arrangement for operating the LED module.
- the individual LEDs of the respective LED group are usually provided with a different thickness coating of phosphorus.
- different optics are used for bundling the radiation emitted by such LED modules.
- the invention is therefore based on the object to propose an improved LED module for lighting purposes, which is equipped with at least two different LED groups having different color temperatures, the LEDs of the different LED groups are arranged in mutually systematically mixed distribution.
- the aim of the further developed LED module is to produce an at least extensive, at least visible to the human eye, homogeneous illumination, as it is e.g. is required for office lighting in view of the long residence time of persons.
- the problem to be solved includes the requirements that the LED modules can be produced in series with adequate service life, properties defined in close tolerances and at an efficient cost.
- the designed for lighting LED module is equipped with at least a first LED group and a second LED group having different color temperatures, each of the two LED groups has at least one LED.
- the at least two LEDs are covered with a coating for refraction of light.
- the coating consists of heat-resistant, translucent silicone composition.
- At least one of the at least two LED groups comprises a plurality of LEDs, and the LEDs of the different LED groups are arranged in a systematically mixed distribution among each other.
- the first LED group has cold white LEDs of e.g. 4000 K, while the second LED group is made up of warm white LEDs of e.g. 3000 K exists.
- the LEDs of the first LED group and the LEDs of the second LED group may be arranged in mutually parallel rows in alternative alternation.
- the LED's of the first LED group and the LED's of the second LED group may be in checkerboard alternative alternation, with e.g. 4 x 4 LEDs, be arranged.
- the coating of heat-resistant, translucent silicone compound is crystal clear and applied by infusion.
- the coating over the LED's is a height in the range of about 0.1 mm to 10 mm.
- the LEDs are arranged on a base within a reflective border, which serves for shuttering of the coating.
- the LED module 6, which is especially suitable for lighting purposes and configured here by way of example, is equipped with a first LED group 1 and a second LED group 2 , which have different color temperatures.
- the LEDs 11 of the first LED group 1 and the LEDs 21 of the second LED group 2 are arranged in a checkerboard alternative change, with 4 X 4 LED's.
- the LEDs 11 of the first LED group 1 and the LEDs 21 of the second LED group 2 could, for example, also be arranged alternately in two or more rows parallel to one another.
- the first LED group 1 can be cold-white LEDs 11 of, for example, 4000 K, while the second LED group 2 consists of warm-white LEDs 21 of, for example, 3000 K.
- the LEDs 11, 21 of both LED groups 1 , 2 are arranged on a base 4 within a reflective border 5 , which serves for shuttering a coating 3 .
- This covering the LED's 11,21 coating 3 causes a refraction of light emitted by all LEDs 11,21 radiation, so that a multiple superposition and thus mixing of the light coming from the individual LED's 11,21 happens and appears to the human eye as homogeneous illumination.
- the coating 3 consists of a heat-resistant, translucent, preferably crystal-clear silicone composition.
- a coating 3 is suitable over the LEDs 11, 21 at a height in the range of approximately 0.1 mm to 10 mm.
- the application of the coating 3 can be carried out in a production-efficient manner by pouring the initially liquid silicone compound into the border 5 before curing.
- the silicone composition suitable for the coating 3 for example, the product QLE1102 (Optically Clear 2-Part Encapsulant) of ACC Silicones Ltd., Somerset / Great Britain, in accordance with the processing instructions according to their Technical Data Sheet, which can be found at www.acc.silicones .com is available.
Abstract
Description
Die Erfindung betrifft ein LED-Modul für Beleuchtungszwecke, das mit LED's mit unterschiedlichen Farbtemperaturen bestückt ist. Zum Beispiel sind auf dem LED-Modul die LED's einer ersten LED-Gruppe und die LED's einer zweiten LED-Gruppe in untereinander systematisch gemischter Verteilung angeordnet. Eine solche gemischte Verteilung kann z.B. aus zwei zueinander parallelen Reihen im alternativen Wechsel oder in schachbrettförmiger Weise gebildet sein.The invention relates to an LED module for lighting purposes, which is equipped with LED's with different color temperatures. For example, the LEDs of a first LED group and the LEDs of a second LED group are arranged in a systematically mixed distribution on one another on the LED module. Such a mixed distribution may e.g. be formed of two mutually parallel rows alternately or in a checkerboard manner.
Gegenstand der europäischen Patentanmeldung Nr.
Zur Erzielung der unterschiedlichen Farbtemperaturen auf dem LED-Modul sind die einzelnen LED's der jeweiligen LED-Gruppe üblicherweise mit einem unterschiedlich dicken Überzug aus Phosphor versehen. Zur Bündelung der von derartigen LED-Modulen abgegebenen Strahlung kommen verschiedene Optiken zur Anwendung.To achieve the different color temperatures on the LED module, the individual LEDs of the respective LED group are usually provided with a different thickness coating of phosphorus. For bundling the radiation emitted by such LED modules different optics are used.
Beim Einsatz der zuvor beschriebenen LED-Module innerhalb der Erfindung gemäss der europäischen Patentanmeldung Nr.
Der Erfindung liegt daher die Aufgabe zugrunde, ein verbessertes LED-Modul für Beleuchtungszwecke vorzuschlagen, das mit zumindest zwei verschiedenen LED-Gruppen bestückt ist, die unterschiedliche Farbtemperaturen besitzen, wobei die LED's der verschiedenen LED-Gruppen in untereinander systematisch gemischter Verteilung angeordnet sind. Ziel des weiter entwickelten LED-Moduls ist, damit eine zumindest weitgehende, jedenfalls dem menschlichen Auge erscheinende, homogene Beleuchtung zu erzeugen, wie es z.B. für Büroleuchten angesichts der langen Verweildauer von Personen erforderlich ist.The invention is therefore based on the object to propose an improved LED module for lighting purposes, which is equipped with at least two different LED groups having different color temperatures, the LEDs of the different LED groups are arranged in mutually systematically mixed distribution. The aim of the further developed LED module is to produce an at least extensive, at least visible to the human eye, homogeneous illumination, as it is e.g. is required for office lighting in view of the long residence time of persons.
Die zu lösende Aufgabe umfasst dabei die Erfordernisse, dass sich die LED-Module in Serie mit adäquater Lebensdauer, in engen Toleranzen definierten Eigenschaften und zu effizienten Kosten fertigen lassen.The problem to be solved includes the requirements that the LED modules can be produced in series with adequate service life, properties defined in close tolerances and at an efficient cost.
Das für Beleuchtungszwecke konzipierte LED-Modul ist mit zumindest einer ersten LED-Gruppe und einer zweiten LED-Gruppe bestückt, die unterschiedliche Farbtemperaturen besitzen, wobei jede der beiden LED-Gruppen zumindest jeweils eine LED aufweist. Die zumindest zwei LED's sind mit einer Beschichtung zur Lichtbrechung überdeckt.The designed for lighting LED module is equipped with at least a first LED group and a second LED group having different color temperatures, each of the two LED groups has at least one LED. The at least two LEDs are covered with a coating for refraction of light.
Nachfolgend werden spezielle Ausführungsformen der Erfindung definiert: Die Beschichtung besteht aus wärmebeständiger, lichtdurchlässiger Silikonmasse. Zumindest eine der zumindest zwei LED-Gruppen umfasst mehrere LED's, und die LED's der verschiedenen LED-Gruppen sind in untereinander systematisch gemischter Verteilung angeordnet.Hereinafter, specific embodiments of the invention are defined: The coating consists of heat-resistant, translucent silicone composition. At least one of the at least two LED groups comprises a plurality of LEDs, and the LEDs of the different LED groups are arranged in a systematically mixed distribution among each other.
Die erste LED-Gruppe hat kalt-weisse LED's von z.B. 4000 K, während die zweite LED-Gruppe aus warm-weissen LED's von z.B. 3000 K besteht.The first LED group has cold white LEDs of e.g. 4000 K, while the second LED group is made up of warm white LEDs of e.g. 3000 K exists.
In einer speziellen Ausführungsform können die LED's der ersten LED-Gruppe und die LED's der zweiten LED-Gruppe in zueinander parallelen Reihen im alternativen Wechsel angeordnet sein.In a specific embodiment, the LEDs of the first LED group and the LEDs of the second LED group may be arranged in mutually parallel rows in alternative alternation.
In einer anderen Ausführungsform können die LED's der ersten LED-Gruppe und die LED's der zweiten LED-Gruppe in schachbrettförmigem alternativen Wechsel, mit z.B. 4 X 4 LED's, angeordnet sein.In another embodiment, the LED's of the first LED group and the LED's of the second LED group may be in checkerboard alternative alternation, with e.g. 4 x 4 LEDs, be arranged.
Die Beschichtung aus wärmebeständiger, lichtdurchlässiger Silikonmasse ist glasklar und durch Aufgiessen aufgetragen.The coating of heat-resistant, translucent silicone compound is crystal clear and applied by infusion.
Die Beschichtung über den LED's beträgt eine Höhe im Bereich von ca. 0.1 mm bis 10 mm.The coating over the LED's is a height in the range of about 0.1 mm to 10 mm.
Die LED's sind auf einer Basis innerhalb einer reflektierenden Umrandung angeordnet, welche der Einschalung der Beschichtung dient.The LEDs are arranged on a base within a reflective border, which serves for shuttering of the coating.
Es zeigen:
- Figur 1 -
- ein erfindungsgemässes LED-Modul, mit 2 verschiedenen LED-Gruppen in schachbrettförmiger Bestückung mit 4 X 4 LED's, als Prinzipdarstellung in Perspektivansicht;
- Figur 2 -
- das LED-Modul gemäss
, in Draufsicht; undFigur 1 - Figur 3 -
- den Schnitt auf der Linie A-A gemäss
.Figur 2
- FIG. 1 -
- an inventive LED module, with 2 different LED groups in checkerboard-shaped assembly with 4
X 4 LED's, as a schematic representation in perspective view; - FIG. 2 -
- the LED module according to
FIG. 1 in plan view; and - FIG. 3 -
- the section on the line AA according to
FIG. 2 ,
Mit Bezug auf die beiliegenden Zeichnungen erfolgt nachstehend die detaillierte Beschreibung eines Ausführungsbeispiels zum erfindungsgemässen LED-Modul.The detailed description of an exemplary embodiment of the LED module according to the invention will now be described with reference to the accompanying drawings.
Das speziell für Beleuchtungszwecke geeignete und hier beispielhaft konfigurierte LED-Modul 6 ist mit einer ersten LED-Gruppe 1 und einer zweiten LED-Gruppe 2 bestückt, die unterschiedliche Farbtemperaturen besitzen. Die LED's 11 der ersten LED-Gruppe 1 und die LED's 21 der zweiten LED-Gruppe 2 sind in schachbrettförmigem alternativen Wechsel, mit 4 X 4 LED's angeordnet. Die LED's 11 der ersten LED-Gruppe 1 und die LED's 21 der zweiten LED-Gruppe 2 könnten z.B. auch in zwei oder mehreren zueinander parallelen Reihen im alternativen Wechsel angeordnet sein. Die erste LED-Gruppe 1 können kalt-weisse LED's 11 von z.B. 4000 K sein, während die zweite LED-Gruppe 2 aus warm-weissen LED's 21 von z.B. 3000 K besteht.The
Die LED's 11,21 beider LED-Gruppen 1,2 sind auf einer Basis 4 innerhalb einer reflektierenden Umrandung 5 angeordnet, welche der Einschalung einer Beschichtung 3 dient. Diese die LED's 11,21 überdeckende Beschichtung 3 bewirkt eine Lichtbrechung der von allen LED's 11,21 abgegebenen Strahlung, so dass eine vielfache Überlagerung und damit Vermischung des von den einzelnen LED's 11,21 kommenden Lichts geschieht und dem menschlichen Auge als homogene Beleuchtung erscheint.The
Vorteilhaft besteht die Beschichtung 3 aus einer wärmebeständigen, lichtdurchlässigen, vorzugsweise glasklaren Silikonmasse. Geeignet ist eine Beschichtung 3 über den LED's 11,21 in einer Höhe im Bereich von ca. 0.1 mm bis 10 mm. Das Auftragen der Beschichtung 3 lässt sich produktionseffizient durch Aufgiessen der vor dem Aushärten zunächst flüssigen Silikonmasse in die Umrandung 5 hinein vornehmen. Als für die Beschichtung 3 geeignete Silikonmasse ist z.B. das Erzeugnis QLE1102 (Optically Clear 2-Part Encapsulant) der Firma ACC Silicones Ltd., Somerset/Grossbritannien, unter Beachtung der Verarbeitungshinweise gemäss deren Technical Data Sheet zu nennen, das bei www.acc.silicones.com abrufbar ist.Advantageously, the
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10405227A EP2458260A1 (en) | 2010-11-24 | 2010-11-24 | LED module for lighting purposes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10405227A EP2458260A1 (en) | 2010-11-24 | 2010-11-24 | LED module for lighting purposes |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2458260A1 true EP2458260A1 (en) | 2012-05-30 |
Family
ID=43827305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10405227A Withdrawn EP2458260A1 (en) | 2010-11-24 | 2010-11-24 | LED module for lighting purposes |
Country Status (1)
Country | Link |
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EP (1) | EP2458260A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1040520A1 (en) | 1997-09-22 | 2000-10-04 | Cray Research, Inc. | Demountable, compliant area array interconnect |
US20050073840A1 (en) * | 2003-10-01 | 2005-04-07 | Chou Der Jeou | Methods and apparatus for an LED light engine |
US20080137331A1 (en) * | 2006-12-11 | 2008-06-12 | Hiroki Kaneko | Illumination device and display device incorporating the same |
DE102007025749A1 (en) * | 2007-06-01 | 2008-12-11 | Wacker Chemie Ag | Illuminant-silicone mold part |
US20100091491A1 (en) * | 2008-10-14 | 2010-04-15 | Ledengin, Inc. | Total internal reflection lens for color mixing |
US20100200872A1 (en) * | 2009-01-09 | 2010-08-12 | Jun Takashima | Illumination device having multiple led elements with varying color temperatures |
-
2010
- 2010-11-24 EP EP10405227A patent/EP2458260A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1040520A1 (en) | 1997-09-22 | 2000-10-04 | Cray Research, Inc. | Demountable, compliant area array interconnect |
US20050073840A1 (en) * | 2003-10-01 | 2005-04-07 | Chou Der Jeou | Methods and apparatus for an LED light engine |
US20080137331A1 (en) * | 2006-12-11 | 2008-06-12 | Hiroki Kaneko | Illumination device and display device incorporating the same |
DE102007025749A1 (en) * | 2007-06-01 | 2008-12-11 | Wacker Chemie Ag | Illuminant-silicone mold part |
US20100091491A1 (en) * | 2008-10-14 | 2010-04-15 | Ledengin, Inc. | Total internal reflection lens for color mixing |
US20100200872A1 (en) * | 2009-01-09 | 2010-08-12 | Jun Takashima | Illumination device having multiple led elements with varying color temperatures |
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