Abstract: An LED light string includes a socket, electrical wires, and an LED-based luminous element. The LED luminous element has two conductive terminals respectively set in abutting contact with or to pierce through the electrical wires. The socket is composed of two unsymmetrical casing members. The electrical wires and the luminous element are first placed in the first casing member and then, the second casing member is fit to and attached to the first casing member. Ultrasonic wave is then applied to achieve secure coupling of the light string.

Abstract: A socket is provided for an LED light string and is formed by jointing two unsymmetrical casing members through thermal fusion by application of ultrasonic wave to thereby securely combine with electrical wires and a luminous element. The first and second casing members are provided with raised-and-recessed inter-engageable structures including holes and protrusions and multiple tiny bosses that is thermally fusible through application of ultrasonic wave for adhesion purposes. The first casing member includes a receiving channel for receiving electrical wires therein and the second casing member includes hold-down blocks and holding blocks for holding the electrical wires in position.

Abstract: A socket is provided for an LED light string and is formed by jointing two unsymmetrical casing members through thermal fusion by application of ultrasonic wave to thereby securely combine with electrical wires and a luminous element. The first and second casing members are provided with raised-and-recessed inter-engageable structures including holes and protrusions and multiple tiny bosses that is thermally fusible through application of ultrasonic wave for adhesion purposes. The first casing member includes a receiving channel for receiving electrical wires therein and the second casing member includes hold-down blocks and holding blocks for holding the electrical wires in position.

Abstract: An LED light string includes a socket, electrical wires, and an LED-based luminous element. The LED luminous element has two conductive terminals respectively set in abutting contact with or to pierce through the electrical wires. The socket is composed of two unsymmetrical casing members. The electrical wires and the luminous element are first placed in the first casing member and then, the second casing member is fit to and attached to the first casing member. Ultrasonic wave is then applied to achieve secure coupling of the light string.