Abstract: The present disclosure provides a lamp head structure. The lamp head structure includes: a seat body having a hollow space, a top opening and a bottom opening communicating with the hollow space; and a connection member, detachably connected to the seat body at the top opening. The connection member and the seat body cooperatively define a wire inlet hole and a wire outlet hole, the wire inlet hole and the wire outlet hole communicating to the hollow space. The present disclosure provides a bulb lamp and a lamp string. The lamp head structure, the bulb lamp, and the lamp string each has a simplified structure and a low cost, and may be easily assembled.

Abstract: A wire arranging device configured to arrange a lead-in wire and a lead-out wire includes a lead-in path configured to arrange the lead-in wire and a lead-out path configured to arrange the lead-out wire. A bulb lamp and a light string including the wire arranging device are provided.