WO2010100010A1 - Dispositif d'éclairage à diodes électroluminescentes - Google Patents

Dispositif d'éclairage à diodes électroluminescentes Download PDF

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Publication number
WO2010100010A1
WO2010100010A1 PCT/EP2010/051568 EP2010051568W WO2010100010A1 WO 2010100010 A1 WO2010100010 A1 WO 2010100010A1 EP 2010051568 W EP2010051568 W EP 2010051568W WO 2010100010 A1 WO2010100010 A1 WO 2010100010A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflector
light
lighting device
led lighting
emitting diode
Prior art date
Application number
PCT/EP2010/051568
Other languages
German (de)
English (en)
Inventor
Christoph Neureuther
Ales Markytan
Steffen Block
Robert Kraus
Original Assignee
Osram Gesellschaft mit beschränkter Haftung
Osram Opto Semiconductors Gmbh
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 Osram Gesellschaft mit beschränkter Haftung, Osram Opto Semiconductors Gmbh filed Critical Osram Gesellschaft mit beschränkter Haftung
Publication of WO2010100010A1 publication Critical patent/WO2010100010A1/fr

Links

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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F21V7/26—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material the material comprising photoluminescent substances
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • F21V7/30—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings the coatings comprising photoluminescent substances
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • 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 lighting device which has at least one light-emitting diode and a reflector.
  • Fluorescent dye phosphor, for example, with cerium-doped yttrium-aluminum-garnet powder
  • LED blue light emitting diode
  • the LED lighting device has at least one light-emitting diode, a first reflector, a second reflector and a heat sink, wherein on the heat sink in a Arrangement level arranged light emitting diode is oriented such that it emits its emitted light to the first reflector and the first reflector and the second reflector are aligned such that the light from the first reflector is forwarded to the second reflector, where it is reflected to emit the illumination device ,
  • the at least one LED is arranged on a heat sink and at least two reflectors are provided, it is possible to provide an LED or a plurality of LEDs and to provide a heat dissipation without consideration of the emission direction, wherein at least by means of a reflector the direct emission of the emitted one Light from the LED from the lighting device can be prevented.
  • the base material of the first reflector consists of a good heat-conducting material, eg. B. of metal or thermally conductive ceramic.
  • the thermal conductivity is more than 15 W / (mK), especially more than 100 W / (mK).
  • a reflector region of the at least one conversion reflector preferably has at least one wavelength conversion material (phosphor) for the light emitted by the at least one light-emitting diode. In wavelength conversion, the converted light is typically emitted isotropically on average.
  • the conversion reflector also diffuses the part of the light emitted by the light-emitting diode or reflects it diffusely, which is not wavelength-converted (if present). As a result, the conversion reflector acts as a diffuser or conversion diffuser, but without any loss in efficiency.
  • At least one optical element By providing at least one optical element, it is possible in a simple manner to capture as much as possible of the light emitted by the LED or the LEDs and to guide it to the first reflector, so that direct emission from the LED is largely prevented. If a conversion layer is provided on the first reflector, the amount of light supplied to the conversion layer is optimized.
  • the light emitted by the at least one conversion reflector produces a white mixed light.
  • a lighting device is preferred in which the at least one light-emitting diode is a blue-emitting light-emitting diode and the wavelength conversion material converts blue light into yellow light.
  • the wavelength conversion material converts blue light into yellow light.
  • This typically produces a "cold” tes white "with a typical color temperature of about 6500 K.
  • two wavelength conversion materials are preferred which convert the blue light of the LED (s) to yellow light or red Converting light:
  • the blue content for "cold white” is typically 15% - 20%, that for "warm white” is about 10% - 15%.
  • the at least one light-emitting diode is a UV light-emitting diode and wavelength conversion materials convert UV light into red, green or blue light, or a similarly acting color combination. Then it is highly preferred when the UV light is completely converted to visible mixed light.
  • the reflector portion of the conversion reflector is visible only when viewed from the side, but it is preferred if it is not directly visible from the outside.
  • the second reflector For accurate and easy positioning of the second reflector, it is advantageous if it is arranged on a substrate carrying the at least one light-emitting diode.
  • first reflector may be advantageous for even more effective thermal decoupling between the first reflector and the light-emitting diode (s) or LED module if the first reflector is arranged in the emission direction of the light-emitting diode (s) without direct contact with the supporting substrate.
  • This is possible, for example, via a heat-insulating support device, which carries the second reflector, on which a translucent cover plate rests, to which in turn the first reflector is attached.
  • the alignment of the first reflector, the second reflector and LED each other is easily ensured in this way.
  • a light guiding element such as an optical fiber
  • FIG. 2 shows a sectional view of a first embodiment of an LED lighting device
  • FIG 3 shows a sectional view of a second embodiment of an LED lighting device.
  • FIG. 1 shows a schematic representation of an LED lighting device, on the basis of which the operation will be explained.
  • the first reflector 8 covers the LED module 2 laterally (in the x-y plane), thus projecting laterally beyond it.
  • the second reflector 6 is arranged at such a position on the piston 9, that it is not in the direct emission range of the LED module 2, so does not directly receive its emitted blue light.
  • the light emitted by the LED module 2 is radiated mainly to the underside 8a of the first reflector 8 serving as a reflector region, as indicated by the solid arrows.
  • the blue light is partially converted into yellow light.
  • the underside 8a of the first The reflector 8 is shaped in such a way that both unconverted blue light and converted yellow light are directed as white mixed light onto the second reflector 6 (dotted arrows), which then reflects the mixed light into the otherwise translucent piston 9.
  • the second reflector 6 can be designed both mirrored and diffuse reflective.
  • the second reflector 6 may also be faceted.
  • the emission characteristic of such an LED illumination device 7 can be adapted to the emission characteristic of any desired lamp by suitable faceting of the first reflector 8 and / or the second reflector 6 and / or by a so-called "frosting" of the glass bulb 9.
  • a lamp 7 is suitable as a so-called retrofit lamp; the LED chips as well as the wavelength conversion material (phosphor) or the conversion-reflecting underside 8a are not visible in plan view.
  • the lamp or LED lighting device shown in FIG. 1 is designed as a retrofit lamp. It has, even if not shown for clarity, suitable power connections and drivers for the LED chips 1, possibly also heat sink.
  • the lamp 7 may have an Edison base or a bayonet base.
  • the contour of the piston 9 is similar to that of an incandescent lamp.
  • an LED 2 is arranged on a heat sink 1.
  • the part designated by the reference symbol Ia can be a part of the heat sink 1 or a printed circuit board which serves to supply power to the LED 2.
  • the LED 2 is only symbolically represented as a "box.” This is because it may be one or more LEDs Further, for explanation only one LED 2 is mentioned, but it should always be considered that there may be several LEDs.
  • the LED 2 emits light, which, as indicated by the arrows is emitted in a beam angle.
  • the radiated light is captured by an optical element 4 and directed to a first reflector 8.
  • the optical element 4 can be a lens arrangement, but also a light-guiding element which is placed on the LED 2 and which leads to shortly before the first reflector 8.
  • the light is reflected on the mirrored surface area of the first reflector 8.
  • a conversion layer 9 is applied, which has a wavelength-converting material. By means of this material, the wavelength of the light is changed, i. For example, blue light is converted into white light.
  • the sectional view shown in Figure 2 is cylindrically symmetric, i. the first reflector is in the form of a cone tip.
  • the light reflected from the apex of the first reflector 8 is reflected towards a second reflector 6, as indicated by the arrows.
  • the reflection angles of the first reflector 8 and of the second reflector 6 are selected such that the light emitted by the second reflector 6 leaves the LED illumination device in a direction of radiation indicated by an arrow 30.
  • It is a translucent cover plate 14 is provided, which rests on the second reflector 6.
  • the first reflector 8 is fixed centered on the cover plate 14.
  • the second reflector 6 is fastened to the heat sink 1 via a fastening device 3.
  • the second embodiment shown in Fig. 3 two LEDs 2 are shown, on each of which a single optical element 4 is seated. However, it can also be a single LED or more than two LEDs. Of importance of this embodiment is that the emitted light from the optical element 4 is not parallel, but is guided with a Abstrahlwinkel Anlagen to the first reflector 8.
  • the first reflector 8 has two reflection planes, which have a different cutting angle to the arrangement plane Ib, in which the LEDs 2 are arranged, if one imagines the planes extended to a section.
  • the light leaves the LED illumination device substantially in the direction of the illustrated radiation direction 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un dispositif d'éclairage à diodes électroluminescentes (10; 20), comprenant au moins une diode électroluminescente (2), un premier réflecteur (8), un deuxième réflecteur (6) et un radiateur (1). La diode électroluminescente montée sur le radiateur (1) dans un plan de montage (1b) est orientée de manière que la lumière qu'elle émet soit envoyée au premier réflecteur (8). Le premier réflecteur (8) et le deuxième réflecteur (6) sont orientés l'un par rapport à l'autre de manière que la lumière provenant du premier réflecteur (8) soit transmise au deuxième réflecteur (6) sur lequel elle est réfléchie pour former le rayonnement du dispositif d'éclairage à diodes électroluminescentes (10; 20).
PCT/EP2010/051568 2009-03-06 2010-02-09 Dispositif d'éclairage à diodes électroluminescentes WO2010100010A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009012138.2 2009-03-06
DE102009012138A DE102009012138A1 (de) 2009-03-06 2009-03-06 LED-Beleuchtungsvorrichtung

Publications (1)

Publication Number Publication Date
WO2010100010A1 true WO2010100010A1 (fr) 2010-09-10

Family

ID=42040415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/051568 WO2010100010A1 (fr) 2009-03-06 2010-02-09 Dispositif d'éclairage à diodes électroluminescentes

Country Status (2)

Country Link
DE (1) DE102009012138A1 (fr)
WO (1) WO2010100010A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012201706A1 (de) * 2011-02-04 2012-08-09 Trilux Gmbh & Co. Kg LED-Operationsleuchte mit Monoreflektor
DE102011112222A1 (de) * 2011-09-02 2013-03-07 Osram Ag Beleuchtungseinheit mit optischen System
DE102013013411A1 (de) * 2013-08-08 2015-02-12 Friedrich Grimm Leuchtdiode und leuchtdiodenanordnung für einen scheinwerfer
US9243770B2 (en) 2012-04-18 2016-01-26 Osram Gmbh Lighting device having a reflector and an aperture
CN107369674A (zh) * 2016-05-11 2017-11-21 欧司朗股份有限公司 发光二极管和发光模块
TWI769733B (zh) * 2017-03-31 2022-07-01 日商Ｃｔｎｂ股份有限公司 配光控制元件

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011122033A1 (de) * 2011-12-22 2013-06-27 Osram Gmbh Aufbringen eines Leuchtstoffs auf ein optisches Element
DE102012005661A1 (de) * 2012-03-22 2013-09-26 Schott Ag Beleuchtungseinrichtung zur Erzeugung von Licht mit unterschiedlicher Abstrahlcharakteristik
DE102012005660A1 (de) * 2012-03-22 2013-09-26 Schott Ag Beleuchtungseinrichtung zur Erzeugung von Licht mit hoher Leuchtdichte
EP2828124B1 (fr) 2012-03-22 2021-02-24 Schott AG Dispositif d'éclairage pour produire de la lumière d'une luminance élevée
DE102012206394A1 (de) * 2012-04-18 2013-10-24 Osram Gmbh Leuchtvorrichtung mit Reflektor, Linse und Blende
DE102012220455A1 (de) * 2012-11-09 2014-05-15 Osram Gmbh Leuchtvorrichtung mit halbleiterlichtquelle
US9279548B1 (en) 2014-08-18 2016-03-08 3M Innovative Properties Company Light collimating assembly with dual horns
DE102014226668A1 (de) * 2014-12-19 2016-06-23 Osram Gmbh Leuchtvorrichtung
DE102016121689A1 (de) 2016-11-11 2018-05-17 Trilux Medical Gmbh & Co. Kg Monoreflektor-Operationsraumleuchte
DE102021100513B3 (de) 2021-01-13 2022-04-21 Bjb Gmbh & Co. Kg Reflektor für eine Leuchte

Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2005078338A1 (fr) * 2004-02-17 2005-08-25 Kelly William M Lampe baladeuse
WO2008089324A2 (fr) * 2007-01-17 2008-07-24 Lighting Science Group Corporation Optique de collimation à réseau de del à trajet optique replié
US20080198572A1 (en) * 2007-02-21 2008-08-21 Medendorp Nicholas W LED lighting systems including luminescent layers on remote reflectors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6796698B2 (en) * 2002-04-01 2004-09-28 Gelcore, Llc Light emitting diode-based signal light
CA2565339C (fr) * 2004-05-05 2012-11-06 Rensselaer Polytechnic Institute Source lumineuse a haute efficacite utilisant un emetteur semi-conducteur et un materiau de d'abaissement de frequence
DE102007056874A1 (de) * 2007-11-26 2009-05-28 Osram Gesellschaft mit beschränkter Haftung LED-Beleuchtungsvorrichtung mit Konversionsreflektor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005078338A1 (fr) * 2004-02-17 2005-08-25 Kelly William M Lampe baladeuse
WO2008089324A2 (fr) * 2007-01-17 2008-07-24 Lighting Science Group Corporation Optique de collimation à réseau de del à trajet optique replié
US20080198572A1 (en) * 2007-02-21 2008-08-21 Medendorp Nicholas W LED lighting systems including luminescent layers on remote reflectors

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012201706A1 (de) * 2011-02-04 2012-08-09 Trilux Gmbh & Co. Kg LED-Operationsleuchte mit Monoreflektor
DE102012201706B4 (de) * 2011-02-04 2014-03-27 Trilux Gmbh & Co. Kg LED-Operationsleuchte mit Monoreflektor
DE102011112222A1 (de) * 2011-09-02 2013-03-07 Osram Ag Beleuchtungseinheit mit optischen System
DE102011112222A8 (de) * 2011-09-02 2013-05-29 Osram Gmbh Beleuchtungseinheit mit optischem System
US9243770B2 (en) 2012-04-18 2016-01-26 Osram Gmbh Lighting device having a reflector and an aperture
DE102013013411A1 (de) * 2013-08-08 2015-02-12 Friedrich Grimm Leuchtdiode und leuchtdiodenanordnung für einen scheinwerfer
DE102013013411B4 (de) * 2013-08-08 2015-06-03 Friedrich Grimm Leuchtdiode und leuchtdiodenanordnung für einen scheinwerfer
CN107369674A (zh) * 2016-05-11 2017-11-21 欧司朗股份有限公司 发光二极管和发光模块
TWI769733B (zh) * 2017-03-31 2022-07-01 日商Ｃｔｎｂ股份有限公司 配光控制元件

Also Published As

Publication number Publication date
DE102009012138A1 (de) 2010-09-09

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