Patent ID: 7394189

Claim:
A compact self-ballasted fluorescent lamp comprising: a spiral arc tube in a double spiral configuration which is formed by spirally winding a glass tube from a middle portion thereof to both end portions thereof inclusive, the spiral arc tube having pairs of electrically conductive lead wires that respectively support electrodes at the end portions; and a circuit board (i) on which pairs of connection members are provided so as to respectively connect the pairs of lead wires to the circuit board, and (ii) which applies a driving voltage to the electrodes through the pairs of lead wires to cause the spiral arc tube to emit light, wherein the spiral arc tube has a pinch seal configured part in which the end portions seal the pairs of lead wires, and the pinch surface of the pinch seal configured part is tilted with respect to a spiral axis of the spiral arc tube, and a straight line connecting locations from which the pairs of lead wires extend is tilted with respect to the spiral axis of the spiral arc tube so that the locations are positioned with an interval therebetween in a direction perpendicular to the spiral axis of the spiral arc tube.