The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2018
Filed:
Mar. 10, 2016
Philips Lighting Holding B.v., Eindhoven, NL;
Theodorus Johannes Petrus Van Den Biggelaar, Eindhoven, NL;
Harald Josef Günther Radermacher, Eindhoven, NL;
Peter Van Delft, Eindhoven, NL;
Bob Bernardus Anthonius Theunissen, Eindhoven, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
A light unit () including one or more lighting devices, in particular one or more LEDs is disclosed. The light unit comprises input terminals () for connecting the light unit to an external power supply () and for receiving an input voltage (V) from the external power supply. A first lighting device and at least one additional lighting device () connected in series to the input terminals and a charge storage device () is connected in series to the first lighting device. The first lighting device () and the additional lighting device () forms a tapped linear driver that the number of the lighting device () being turned on depending on an amplitude of the input voltage (V). The first lighting device or a second lighting device () is electrically connectable in parallel to the charge storage device via an additional current path (), wherein the charge storage device is adapted be switched in series with the tapped linear driver and be charged within a second time duration (tto t), when the input voltage (V) is above a threshold, and discharge when the input voltage (V) is below a certain level, to provide electrical power to the first lighting device or the second lighting device for powering the first lighting device or the second lighting device.