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1. WO2007003006 - A MULTICOLOUR LED LIGHTING CIRCUIT

Publication Number WO/2007/003006
Publication Date 11.01.2007
International Application No. PCT/AU2006/000937
International Filing Date 05.07.2006
IPC
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
37
Circuit arrangements for electric light sources in general
02
Controlling
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33
Electroluminescent light sources
02
Details
08
Circuit arrangements not adapted to a particular application
H05B 37/02 (2006.01)
H05B 33/08 (2006.01)
CPC
H05B 45/00
H05B 45/24
H05B 45/46
H05B 47/18
Applicants
  • WINOVATE PTY LTD [AU/AU]; 12 Weir Street Glen Iris, Victoria 3146, AU (AllExceptUS)
  • VAN DONGEN, Charles, Corneles [AU/AU]; AU (UsOnly)
  • DOWNES, Brian [AU/AU]; AU (UsOnly)
  • HOWARD, Grover, Latham [US/AU]; AU (UsOnly)
Inventors
  • VAN DONGEN, Charles, Corneles; AU
  • DOWNES, Brian; AU
  • HOWARD, Grover, Latham; AU
Agents
  • PHILLIPS ORMONDE & FITZPATRICK; Levels 21 & 22 367 Collins Street Melbourne, Victoria 3000, AU
Priority Data
200590355905.07.2005AU
200590356105.07.2005AU
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A MULTICOLOUR LED LIGHTING CIRCUIT
(FR) CIRCUIT D'ECLAIRAGE A DEL MULTICOLORE
Abstract
(EN)
A multicolour LED lighting circuit (10) that includes LED loads (14, 16, 18), preferably of the primary additive colours red, green and blue, which are powered by respective power supply controllers (20, 22, 24) having feedback circuits (32, 34, 36) to provide independently to each LED load a substantially constant but variable direct current. Each power supply controller (20, 22, 24) is uniquely operable by a variable reference voltage from a microprocessor (12) and thus all are independently controllable to allow independent control over the light intensity output of each LED load and thus a very large range of colour outputs is possible from the LED loads as viewed together. The circuit (10) provides for a continuously variable intensity adjustment for each LED load and avoids flicker in the lighting.
(FR)
L'invention concerne un circuit d'éclairage (10) à DEL multicolore, comprenant des DEL (14, 16, 18), de préférence de couleurs primaires additives bleu, vert et rouge, alimentées par des contrôleurs d'alimentation (20, 22, 24) comportant des circuits de rétroaction (32, 34, 36) conçus pour fournir indépendamment à chaque DEL un courant continu sensiblement constant, mais variable. Chaque contrôleur d'alimentation (20, 22, 24) est commandé de façon unique par une tension de référence variable fournie par un microprocesseur (12), ce qui signifie que les contrôleurs peuvent être commandés indépendamment pour réguler l'intensité de lumière produite par chaque DEL et produire un large éventail de couleurs à l'aide de l'ensemble de DEL. Le circuit (10) permet d'ajuster l'intensité de chaque DEL de façon continue et variable et d'éviter le scintillement au niveau de l'éclairage.
Also published as
EP6752662
Latest bibliographic data on file with the International Bureau