Patent ID: 7037132

Claim:
A socket device comprising: a tubular main body which is composed of electrically insulating material forming a lamp-loading hole having an opening at an upper end from which a baseless lamp is inserted; a notch formed in a wall of the tubular main body extending downward from the opening of the lamp-loading hole along its axis; a flange portion formed at a lower end portion of the notch on an outer surface of the wall of the tubular main body extending along its circumferential direction; a first and a second protrusions which are provided on both sides of the notch on the outer surface of the wall with a prescribed spacing from the flange portion; and an electrically conducting connecting member having: a base portion, which is loaded in the lamp-loading hole, a terminal piece, which extends through the notch to a position between the first and the second protrusions, and a lamp support protrusion, which supports the base of the baseless lamp, wherein the tubular main body of the socket device is inserted in a loading hole formed on the printed circuit board and is turned with the printed circuit board sandwiched between the flange portion and the first and the second protrusions, thereby being loaded on the printed circuit board, wherein the first protrusion has a stopper portion, which is extended to the flange portion or its vicinity, so as to stop further turning of the socket device on the printed circuit board, when the socket device is loaded on the loading hole of the printed circuit board.