Patent ID: 9209353
Filing Date: 2015-12-08
Classification: F21K,F21S,F21Y,H01L,Y02B

Abstract:
1. A lighting device comprising a tube shaped light transmissive light outlet unit, a plurality of light emitting diodes generating light which is emitted through the light outlet unit and electrically connected to a conductive layer structure by a conductive medium, the conductive layer structure, arranged as a coating on a portion of an inner surface of the light outlet unit, the light emitting diodes mounted on and electrically connected with the conductive layer structure, the plurality of light emitting diodes positioned in a single row on the inner surface of the light outlet unit; the plurality of light emitting diodes divided into a first chain of light emitting diodes and a second chain of light emitting diodes within the row; the conductive layer structure including a plurality of power connection traces on the inner surface of the light outlet unit; the first chain of light emitting diodes connected in series and electrically connected to a first and second power connection trace; the second chain of light emitting diodes connected in series and electrically connected to a third and fourth power connection trace; the light emitting diodes of the first chain are alternatively interspersed with the light emitting diodes of the second chain.