Suspension wire structure and lighting device

A suspension wire structure, comprising:

• a conductive wire, having a first strand made of a first material;
• a plurality of supporting stranded wires, surrounding the conductive wire, and each of the supporting stranded wires has a plurality of supporting strands made of a second material;
• and
• a protective layer, covering the surface of the conductive wire and being located between the conductive wire and the plurality of supporting stranded wires,
• wherein the plurality of supporting stranded wires and the protective layer are conductive, the protective layer is made of a third material, and the first material, the second material and the third material are different from each other, and
• wherein the conductive wire is electrically connected to the plurality of supporting stranded wires via the protective layer, and the plurality of supporting stranded wires are located at the outermost layer.