Structure of lamp socket

A lamp socket comprising a socket body, a socket cap fastened to said socket body to hold down an electric wire, a positive contact metal plate and a negative contact metal plate installed in said socket body and respectively connected to the positive and negative poles of said electric wire, and a lamp bulb threaded into said socket body to contact the positive and negative contact metal plates;

• wherein said socket body is comprised of two symmetrical halves each having one side hinged to each other by a hinge and an opposite side detachably connected together by a tongue-and-groove joint and then retained in shape by a hoop, each half of said socket body comprising a retaining hole to which said socket cap is fastened, a positive contact metal plate chamber and a negative contact metal plate chamber bilaterally longitudinally disposed at a top, a first inside flange corresponding to said positive contact metal plate chamber, a second inside flange opposite to said first inside flange, and a receptacle at a bottom end of said negative contact metal plate;
• said positive contact metal plate is made of substantially L-shaped configuration and inserted into said positive contact metal plate chamber and supported between said first inside flange and said second inside flange, having a raised contact portion at a bottom for connection to the tip contact of the lamp bulb;
• said negative contact metal plate is a flat plate inserted into said negative contact metal plate chamber, having a bottom end stopped at said receptacle of said socket body and a plurality of raised portions for connection to the ring contact of the lamp bulb.