Abstract: The invention relates to a waterproof safety socket structure, which mainly employs a sleeve element, together with terminals housed inside, attached to the lower end of a light bulb holder and combined with a socket shell to form a tight joint preventing water penetration.

Abstract: An electrical connector is provided which allows simple and efficient replacement of fuses contained within an electrical connector housing. The electrical connector includes a cover plate which is mounted at an upper section of the electrical connector housing. The cover plate is formed with a pair of separators and a projection extending from a lower surface of the cover plate. The two separators may be inserted between fuses and electrical prongs when the cover plate is prepared for opening. The projection pushes the fuses into contact with the electrical prongs in a firm manner for a good electrical connection when the cover plate is completely closed.

Abstract: A miniature light set applied to a series-parallel decorative light string including a miniature bulb, a bulbholder in which the bulb is mounted, and a seat. The bulbholder has a socket on the top center portion for mounting a bulb on, two conducting plates with uppermost portions inserting into the bulbholder, and a base. Three semicircular channels are disposed at the base and are complemented for forming three wire-way by other semicircular channels provided at the seat. A pair of roughly surfaced strips are provided transverse to the channels, both on the base and the seat.