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US 9,791,139 B2Granted
Safe operation of an LED lamp
AssigneePhilips Lighting Holding B.V.
InventorsMartinus Hermanus Wilhelmus Maria Van Delden, Reinier Imre Anton Den Boer, Siebe-Jan Van Der Hoef
Life of this patent
Estimating the term…
Abstract
A lamp and an operating method for a lamp with an LED element 22 are described. An electrical circuit with the LED element 22 is covered by a cover member 12. A separation device 28 is provided to mechanically severe the electrical conductor 16a, 16b arrange to supply electrical power to the LED element 22 if the detector element 24 detects a defect of the cover member 12.
Claims7
A method of operating a lamp, comprising:
- detecting a defect of a cover member covering an electrical circuit including an LED element;
- and
- in response to detecting said defect of the cover member, mechanically acting upon material of an electrical conductor through which electrical power is supplied to the LED element so as to permanently physically separate one part of the material from an other part of the material such that no further electrical conduction of the electrical power to the LED element is possible through the electrical conductor.
A device, comprising:
- a light emitting diode (LED);
- an electrical conductor connected to the LED and configured to supply electrical power to the LED;
- a cover member covering the LED;
- a detector configured to detect a defect in the cover member and in response to a detected defect to produce a triggering signal;
- and
- a separation device configured to receive the triggering signal and, in response to the triggering signal indicating the detected defect in the cover member, to mechanically act upon material of the electrical conductor so as to permanently physically separate one part of the material from an other part of the material such that no further electrical conduction of electrical power to the LED element is possible through the electrical conductor.
3 more elements
Dependencies are inferred from the claim text.