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WO2007054758A1 - Luminaire a del a capacite d’eclairage non uniforme - Google Patents

Luminaire a del a capacite d’eclairage non uniforme Download PDF

Info

Publication number
WO2007054758A1
WO2007054758A1 PCT/IB2005/053712 IB2005053712W WO2007054758A1 WO 2007054758 A1 WO2007054758 A1 WO 2007054758A1 IB 2005053712 W IB2005053712 W IB 2005053712W WO 2007054758 A1 WO2007054758 A1 WO 2007054758A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
assembly
luminaire
output
address
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.)
Ceased
Application number
PCT/IB2005/053712
Other languages
English (en)
Inventor
Gert Bruning
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to PCT/IB2005/053712 priority Critical patent/WO2007054758A1/fr
Publication of WO2007054758A1 publication Critical patent/WO2007054758A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • 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 present invention relates to light emitting diodes (LEDs) in a luminaire. More specifically, the present invention relates to a non-linear dimming control of a LED based luminaire.
  • FIG. 1 illustrates a known fluorescent luminaire 10 employing a housing 11 defining a chamber.
  • a pair of fluorescent lamps 12 and 13 as well as a ballast 14 are disposed within the chamber of housing 11. While luminaire 10 has historically emitted light that adequately illuminate a room, a limitation of luminaire 10 is uniform light intensity along the entire length of lamps 12 and 13 as represented by the arrows downwardly extending from lamps 12 and 13.
  • the present invention addresses this limitation of luminaire 10 with a LED based luminaire.
  • One form of the present invention is LED luminaire employing a housing defining a chamber.
  • a LED assembly, a LED driver assembly and a LED address assembly are disposed within the chamber.
  • the LED driver assembly and the LED address assembly are in electrical communication with the LED assembly to selectively control a non-uniform light output along the entire length of the LED assembly.
  • electrical communication is defined herein as an electrical connection, an electrical coupling or any other technique for electrically applying an output of one device to an input of another device.
  • FIG. 1 illustrates a fluorescent luminaire as known in the art
  • FIG. 2 illustrates one embodiment of a LED luminaire in accordance with the present invention outputting a first exemplary non-linear emission of light
  • FIG. 3 illustrates the LED luminaire illustrated in FIG. 2 outputting a second exemplary non-linear emission of light
  • FIG. 4 illustrates the LED luminaire illustrated in FIG. 2 outputting a third exemplary non-linear emission of light
  • FIG. 5 illustrates one embodiment of a LED control circuitry in accordance with the present invention
  • FIG. 6 illustrates a second embodiment of a LED control circuitry in accordance with the present invention.
  • a LED luminaire 20 as illustrated in FIGS. 2-4 employs a housing 21 defining a chamber.
  • a LED assembly 30, a LED driver assembly 40 and a LED address assembly 50 are disposed within the chamber of housing 21.
  • the LED assembly 30, in one embodiment comprises a plurality of LEDs.
  • the LED assembly 30 in an alternate embodiment of the present invention comprises a plurality of LED arrays.
  • the shape of the housing 21 may be rectangular as illustrated in FIGS. 2-4, circular or elliptical.
  • the LEDs or LED arrays may be placed in a pattern to reflect the shape of the housing 21.
  • a beam-shaping component such as, for example, a lens or diffractive optical element, may be place above the LEDs or LED arrays to affect the non-uniform lighting output.
  • the lighting output as illustrated in FIG. 2 by the downward directed arrows of varying lengths, is most intense in the midsection of housing 21 and least intense at either end of the housing 21.
  • the lighting output as illustrated in FIG. 3 by the downward directed arrows of varying lengths, is most intense at either end of housing 21 and least intense in the midsection of the housing 21.
  • the lighting output as illustrated in FIG. 4 by the downward directed arrows of varying lengths, is of equal and relatively low intensity from the left-most section to the midsection of housing 21 and is of growing intensity from the midsection to the right-most section of the housing 21.
  • FIGS. 2-4 illustrate several non-uniform light outputs from an essentially limitless manner in which the non-uniform lighting output can be maintained. This variety of output non-uniform lighting may be obtained utilizing the LED control circuitry described in FIGS. 5 and 6.
  • LED assembly 30 employs a plurality of conventional LED arrays LAl-LAx, where x > 1 and each LED array includes a plurality of LEDs for emitting one or more colors.
  • LED driver assembly 40 (FIGS. 2-4) employs a multiple-output driver circuit (“MDC") 41 including circuitry for generating direct current I LE DI-IL ED X
  • LED address assembly 50 (FIGS. 2-4) employs an address control module (“ACM”) 51 that includes a processor for determining the required current levels for each LED array LAl-LAx based on a remote or wired control input (not shown).
  • MDC multiple-output driver circuit
  • ACM address control module
  • the address control module 51 circuitry instructs the multiple-output driver circuit ("MDC") 41 to drive each LED array LAl-LAx with an appropriate specified current level.
  • This appropriate specified current level is a function of a desired lighting output of luminaire 20 as transmitted to address control module 51 via a remote or wired control input (not shown).
  • address control module 51 electrically communicates instructions concerning the required levels of direct currents I LEDI -I LEDX to multiple-output driver circuit (“MDC") 41, which in turn communicates direct currents i L EDi-lL E Dxto LED arrays LAl-LAx, respectively.
  • Multiple-output driver circuit 41 includes circuitry for increasing or decreasing an amperage of one or more of the direct currents I LEDI -I LEDX as a function of the desired lighting output of luminaire 20 as transmitted to control module 51 via a remote or wired control input (not shown).
  • the circuitry for circuit 41 and module 51 is constructed in accordance (1) United States Patent Application Publication US2001/0024112 Al published September 27, 2001, and entitled “Supply Assembly For A LED Lighting Module", (2) United States Patent Application Publication US2003/0085749 Al published May 8, 2003, . and entitled "Supply Assembly For A LED Lighting Module", (3) U.S. Patent Application Serial No.
  • LED assembly 30 again employs a plurality of conventional LED arrays LAl-LAx, where x > 1 and each LED array includes a plurality of LEDs for emitting one or more colors.
  • LED driver assembly 40 employs x number of driver circuits DC 1 -DCx, each including conventional circuitry for generating a direct current I LE D I -ILE D X, respectively.
  • LED address assembly 50 (FIGS. 2-4) employs an address control module (“ACM”) 51, which includes a processor for determining the required current levels for each LED array LAl-LAx based on a remote or wired control input (not shown). The address control module 51 circuitry instructs each of the driver circuits DCl-DCx to drive each LED array LAl-LAx with an appropriate specified current level.
  • ACM address control module
  • address control module 51 electrically communicates an instruction to each, of the driver circuits DCl-DCx directing each driver to provide the required levels of direct currents I LEDI -I LEDX to LED arrays LAl-LAx, respectively.
  • Each driver circuit DCl-DCx includes conventional circuitry for increasing or decreasing an amperage of one or more of the direct currents I LEDI -I LEDX as directed by the address control module 51.
  • An example of such driver circuitry would be an efficient switching regulator, known as a buck-converter, to those skilled in the art, for the operation of changing a higher input voltage to a lower output voltage.
  • a single output switching regulator can be used, depending upon the application: For example, if the input power source is a battery, an up-converter switching regulator may be utilized, as is known to those skilled in the art.
  • the LED assembly 30 in an embodiment of the present invention comprises a plurality of LED arrays.
  • the LED arrays LAl-LAx (FIG. 6) are comprised of a plurality of red LEDs, a plurality of green LED arrays, a plurality of blue LED arrays, and plurality of amber LED arrays.
  • the LED arrays are comprised of one LED each.
  • all the LED arrays LAl-LAx may be comprised of blue LEDs with phosphor coatings to provide a white light lighting output in a uniform or nonuniform manner across the luminaire 20.
  • LED driver assembly 40 and LED address assembly 50 are meant to illustrate a structure for controlling a uniform or non-uniform light output, and are not intended to be exhaustive of all possibilities or to limit what can be fabricated for the aforementioned purpose.
  • LED driver assembly 40 and LED address assembly 50 are meant to illustrate a structure for controlling a uniform or non-uniform light output, and are not intended to be exhaustive of all possibilities or to limit what can be fabricated for the aforementioned purpose.
  • the various ways to provide a uniform or non-uniform light output from luminaire 10 such as, for example, the non-uniform light outputs represented by the arrows downwardly extending from LED assembly 30 as illustrated in FIGS. 2-4.
  • Those having ordinary skill in the art will further appreciate the benefit of employing an embodiment of luminaire 10 in numerous and various environments.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un luminaire à DEL (20) comportant un boîtier (21) définissant une chambre ayant un ensemble de DEL (30), un ensemble d’actionnement de DEL (40) et un ensemble d’adresse de DEL (50) disposés à l’intérieur. L’ensemble d’actionnement de DEL (40) et l’ensemble d’adresse de DEL (50) commandent une lumière non uniforme provenant de l’ensemble de DEL (30) en amenant de façon sélective un ou plusieurs courants de DEL (ILED 1-ILEDx) à l’ensemble de DEL (30) et en contrôlant l’intensité des courants de DEL (ILED 1-ILEDx).
PCT/IB2005/053712 2005-11-10 2005-11-10 Luminaire a del a capacite d’eclairage non uniforme Ceased WO2007054758A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2005/053712 WO2007054758A1 (fr) 2005-11-10 2005-11-10 Luminaire a del a capacite d’eclairage non uniforme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2005/053712 WO2007054758A1 (fr) 2005-11-10 2005-11-10 Luminaire a del a capacite d’eclairage non uniforme

Publications (1)

Publication Number Publication Date
WO2007054758A1 true WO2007054758A1 (fr) 2007-05-18

Family

ID=35753607

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/053712 Ceased WO2007054758A1 (fr) 2005-11-10 2005-11-10 Luminaire a del a capacite d’eclairage non uniforme

Country Status (1)

Country Link
WO (1) WO2007054758A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047450A1 (de) * 2010-10-04 2012-04-05 Osram Opto Semiconductors Gmbh Leuchtvorrichtung
AT16754U1 (de) * 2015-04-15 2020-07-15 Zumtobel Lighting Gmbh Beleuchtungseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6250774B1 (en) * 1997-01-23 2001-06-26 U.S. Philips Corp. Luminaire
US20030174499A1 (en) * 2002-03-14 2003-09-18 Bohlander Richard A. LED light source
WO2003096761A1 (fr) * 2002-05-09 2003-11-20 Color Kinetics Incorporated Gradateur pour del
WO2005101917A1 (fr) * 2004-04-15 2005-10-27 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Dispositif pour regler une lumiere

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6250774B1 (en) * 1997-01-23 2001-06-26 U.S. Philips Corp. Luminaire
US20030174499A1 (en) * 2002-03-14 2003-09-18 Bohlander Richard A. LED light source
WO2003096761A1 (fr) * 2002-05-09 2003-11-20 Color Kinetics Incorporated Gradateur pour del
WO2005101917A1 (fr) * 2004-04-15 2005-10-27 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Dispositif pour regler une lumiere

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047450A1 (de) * 2010-10-04 2012-04-05 Osram Opto Semiconductors Gmbh Leuchtvorrichtung
US9192021B2 (en) 2010-10-04 2015-11-17 Osram Opto Semiconductors Gmbh Luminous device comprising multiple spaced-apart emission regions
AT16754U1 (de) * 2015-04-15 2020-07-15 Zumtobel Lighting Gmbh Beleuchtungseinrichtung

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