AC TO DC LED ILLUMINATION DEVICES, SYSTEMS AND METHODS

• Main Author: CHEW, TONG FATT
• Format: Patent
• Language: English; French
• Published: 21.02.2013
• Subjects: BLASTING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

Illumination devices (10), systems and methods that convert an alternating current (AC) supply (14) to a direct current (DC) for powering a plurality of light emitting diodes (LEDs) are disclosed. An illumination device (10) comprises a full wave rectifier (12) for converting the AC supply into a direct current (DC). A current limiting diode (CLD) module (16), comprising at least one CLD is coupled in series to an output of the full wave rectifier and a light emitting diode (LED) module (18) comprising a plurality of LEDs is coupled in series between an output of the CLD module (16) and the full wave rectifier (12). L'invention concerne des dispositifs (10), systèmes et procédés d'éclairage qui convertissent une alimentation (14) en courant alternatif (CA) en un courant continu (CC) permettant d'alimenter une pluralité de diodes électroluminescentes (DEL). Un dispositif d'éclairage (10) comprend un redresseur pleine onde (12) permettant de convertir l'alimentation en CA en un courant continu (CC). Un module de diodes limitatrices de courant (DLC) (16), comprenant au moins une DLC est couplé en série à une sortie de redresseur pleine onde et un module de diodes électroluminescentes (DEL) (18) comprenant une pluralité de DEL est couplé en série entre une sortie du module de DLC (16) et le redresseur pleine onde (12).