• US 20110260614A1
  • Filed: 04/22/2011
  • Published: 10/27/2011
  • Est. Priority Date: 04/23/2010
  • Status: Active Grant
First Claim
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1. A LED tube comprising a translucent or fluorescent tube of substantially the shape and size of a fluorescence tube, inside which one or more LED components and a current control unit are installed and at each end of which there is at least one contact pin for connecting the light element mechanically and electrically to the tube supports of the fluorescence tube lighting fixture, wherein the LED tube has a safety unit arranged to connect electric power from the ends of the LED tube to the current control unit and/or LED components separately only after voltage fed from the corresponding tube support of the lighting fixture to said at least one contact pin has been detected at each end of the LED tube separately, and wherein the LED tube has at least one optical control line arranged to transfer at least one control or measurement signal associated with said safety unit from one end of the LED tube to the other, opposite end.

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