| 摘要 |
This invention relates to a C type lamp string improvement, comprising a lamp holder, a first contact piece, a second contact piece and a cord, wherein said lamp holder is such designed as to be integrally molded together. Said first contact piece and second contact piece may contact each pole of the bulb respectively, and one end of each has a sharp point for piercing the covering of the cord while contacting the core of the cord to achieve good conductivity, and said second contact piece has a proper number of projecting points at intervals equivalent to the pitches of the bulb thread to substitute for the conventional lamp holder thread. For manufacture, the first step is to insert the first and second contact pieces into the mold for making said lamp holder, and then place said cord within said injecting mold to enable said first and second contact pieces to pierce the covering of said cord with the sharp point, and wait until the integration of the injecting mold then the lamp holder will be integrally molded while cord and first and second contact pieces are integrated within the lamp holder.
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