Patent ID: 7893627

Claim:
Light strands comprising at least two light strands connected in series, each light strand comprising: a plurality of two-hole light sockets and a pair of three-hole light sockets being configured for respectively accommodating the plurality of LED lights, wherein the plurality of two-hole light sockets is disposed between the pair of three-hole light sockets, and the plurality of two-hole light sockets and the pair of three-hole light sockets are connected in series; a plurality of LED lights connected in series by connecting the two-hole light sockets; a plug electrically connected to the pair of three-hole light sockets via electrical wires; a plug receptacle electrically connected to the pair of three-hole light sockets via electrical wires; and a current limiting device connected in series to the plurality of LED lights, the current limiting device being configured for switching off the light strand when the current flowing through the current limiting device is greater than a predetermined value, wherein each two-hole light socket comprises a soft core integratedly fixed to each LED light, a soft shell, a bottom plug, and a conductive compression spring, and the soft shell accommodates the soft core, the bottom plug, and the conductive compression spring therein; wherein the soft core is formed to have a wedge-shaped protrusion for compressing the conductive compression spring; and wherein the bottom plug includes two opposite blocks which respectively define a trapezoidal through hole therein for extension of the conductive compression spring therethrough.