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1. WO2020193599 - CLASS 2 CIRCUIT PROTECTION

Publication Number WO/2020/193599
Publication Date 01.10.2020
International Application No. PCT/EP2020/058279
International Filing Date 25.03.2020
IPC
H05B 45/50 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
50responsive to malfunctions of LEDs; responsive to LED life; Protective circuits
H05B 45/52 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
50responsive to malfunctions of LEDs; responsive to LED life; Protective circuits
52in a parallel array of LEDs
H05B 45/20 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
20Controlling the colour of the light
H05B 45/46 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
40Details of LED load circuits
44with an active control inside an LED matrix
46having LEDs disposed in parallel lines
CPC
H05B 45/20
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
20Controlling the colour of the light
H05B 45/46
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
40Details of LED load circuits
44with an active control inside an LED matrix
46having LEDs disposed in parallel lines
H05B 45/52
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
50responsive to malfunctions of LEDs; responsive to LED life; Protective circuits
52in a parallel array of LEDs
Applicants
  • SIGNIFY HOLDING B.V. [NL]/[NL]
Inventors
  • FANG, Yuhong
  • CLAUBERG, Bernd
  • PREMRAJ, Ashwin
Agents
  • VAN EEUWIJK, Alexander, Henricus, Walterus
  • VERWEIJ, Petronella, Danielle
Priority Data
19167640.205.04.2019EP
62/825,10628.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CLASS 2 CIRCUIT PROTECTION
(FR) PROTECTION DE CIRCUIT DE CLASSE 2
Abstract
(EN)
A device, system, and method protect circuits of a lighting device. The lighting device includes a current source generating a current and a first load and a second load receiving the current. The lighting device includes an inductor positioned between the current source and the first and second loads that balances the current powering the first and second loads. The lighting device includes a detector monitoring a voltage peak of the first 5 and second loads. The lighting device includes a voltage controller receiving a reading of the voltage peak from the detector and determining when the voltage peak is at least a voltage peak threshold. The voltage controller is configured to adjust a setting for the current generated by the current source based on the reading of the voltage peak.
(FR)
La présente invention concerne un dispositif, un système et un procédé qui protègent des circuits d'un dispositif d'éclairage. Le dispositif d'éclairage comprend une source de courant générant un courant et une première charge et une seconde charge recevant le courant. Le dispositif d'éclairage comprend une bobine d'induction positionnée entre la source de courant et les première et seconde charges qui équilibre le courant alimentant les première et seconde charges. Le dispositif d'éclairage comprend un détecteur surveillant un pic de tension des première et seconde charges. Le dispositif d'éclairage comprend un contrôleur de tension recevant une lecture du pic de tension provenant du détecteur et déterminant lorsque le pic de tension est au moins un seuil de pic de tension. Le contrôleur de tension est configuré pour ajuster un réglage du courant généré par la source de courant sur la base de la lecture du pic de tension.
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