Abstract: An assembly of a flash-lamp string system comprising a plurality of flash-lamp strings connected in series so as to form into an elongate lamp string; the elongate lamp string includes at least two different flash-lamp strings in terms of flashing type; the outer shape of the two different flash-lamp strings is the same; the bulb socket and the bulb assembly of every aforesaid flash-lamp string can be mounted together within the same flash-lamp string; in other words, the bulb socket and bulb assembly can not be exchanged with that of the different type of flash-lamp string in order to avoid overload of power supply.

Abstract: An assembly of a flash-lamp string system comprising a plurality of flash-lamp strings connected in series so as to form into an elongate lamp string; the elongate lamp string includes at least two different flash-lamp strings in terms of flashing type; the outer shape of the two different flash-lamp strings is the same; the bulb socket and the bulb assembly of every aforesaid flash-lamp string can be mounted together within the same flash-lamp string; in other words, the bulb socket and bulb assembly can not be exchanged with that of the different type of flash-lamp string in order to avoid overload of power supply.

Abstract: An anti-luxation device for clasper of power-supply wires in a lamp string, which mainly comprises a clasper of socket; the clasper includes a wide wall plate and a top flat surface, between which an arm plate extends outwards, and the tail end of the arm plate has a hook hole; the arm plate is connected with the clasper by means of a bendable thin plate; after the arm plate is bent upwards, it will be in contact with the hook furnished and extended out between the cylindrical surface of the socket and the top flat surface, and then the hook hole and the hook can be mated together with a light pressing force without luxation between the clasper and the socket upon the power-supply wires being pulled unintentionally.