The arc tube of the straight tubular condition which encloses the light-emitting diode to the straight tubular forma LED lamp and the lamp holder, and inside is used for

摘要

PROBLEM TO BE SOLVED: To provide a straight tube LED lamp in which wrong installation on a lighting fixture for a fluorescent lamp hardly occurs, and a lamp socket used for the same, as well as a lighting fixture for straight tube LED lamp using these.SOLUTION: The straight tube LED lamp 1 is provided with an arc tube of straight tube shape in which a light-emitting diode is housed, a power feeding base 3 (a first base) installed on one end side in axial direction of the arc tube, and a grounding base 4 (a second base) installed on the other end side in axial direction of the arc tube. The first base has two base pins 7a which are electrically connected to a power feeding contactor provided on a first lamp socket. The second base has a terminal which is electrically connected to a contactor provided on the second lamp socket. The two base pins 7a are arranged along the axial direction of the arc tube and the tip sides of the two base pins 7a project respectively at a nearly right angle to the outside direction. The shape of the terminal of the second base is formed in a long and slender shape in installation direction of the second lamp socket when viewed from the axial direction of the arc tube.