Socket for baseless lamp

Claim 1

A socket, into which a sealed section of a baseless lamp with a pair of leads provided on the outer surfaces of the sealed section is inserted, and which is mounted to a mounting base having a printed wiring formed on the surface thereof and an insertion hole, comprising: a socket body having a bulb insertion cavity for receiving said sealed section of said lamp inserted therein, said socket body being mounted to said mounting base by being inserted through said insertion hole and then turned in a predetermined direction; and a pair of contact members disposed in said bulb insertion cavity, each of said contact members having a pair of elastic contact portions for clamping said sealed section of the lamp inserted in said bulb insertion cavity and being in contact with said leads, and a power supply terminal outwardly extending from said bulb insertion cavity of said socket body, said power supply terminal having a contact protuberance formed on a free end portion thereof and in contact with said printed wiring when said socket body is mounted to said mounting base, said contact protuberance having a flat top surface in contact with said printed wiring, a first inclined side surface extending from said flat top surface toward the base end of said power supply terminal, a second inclined side surface extending from said flat top surface in the direction of rotation of said socket body and third and fourth inclined side surfaces opposed to said first and second inclined side surfaces, respectively, said first and second inclined side surfaces being inclined more gently than said third and fourth inclined side surfaces.