Patent ID: 8246201

Claim:
A circuit comprising: a substrate acting as an insulator; a first power node having a first polarity; a second power node having a second polarity; a first conductive etched area on the substrate; a second conductive etched area on the substrate; a third conductive etched area on the substrate; a fourth conductive etched area on the substrate, each of the first, second, third and fourth conductive etched areas being non-contiguous with the other conductive etched areas; a first light emitting diode, including an anode connected to the second power node and a cathode connected to the first conductive area; a second light emitting diode, including an anode connected to the first conductive area and a cathode connected to the second conductive area; a third light emitting diode, including an anode connected to the second conductive area and a cathode connected to the third conductive area; a fourth light emitting diode, including an anode connected to the third conductive area and cathode connected to the fourth conductive area; and a fifth light emitting diode, including an anode connected to the fourth conductive area and a cathode connected to the first power node, wherein the first power node includes an exterior boundary zone C and the second power node includes an exterior boundary zone A, and the exterior boundary zone A comprises a connection to the second polarity by a contact spring, and the second polarity A is transferred from the exterior boundary zone A towards a central zone B by a mechanical security thermal switch.