| 摘要 |
Fluorescent electric light bulb. The invention relates to a fluorescent electric discharge bulb, with forward longitudinal emission, with supply and fixing by base 12 on one side only of the bulb and obtained by welding a glass tube equipped with two electrodes at its two ends, to one side only of the bulb. It consists of a cylindrical 10 glass envelope 13 inside which is stuck a fluorescent powder 17, and which is closed at one end by a round bottom 15 and at the other by a welded 11 stem 1 supporting the electronic equipment. This stem carries an exhaust tube 9 and, at the vertex of its low part, four glass-metal passages 18 and a central tube 8. The two outer passages 2, 3 are intended for the electrodes of the stem, and the central passages 20 for supplying 14 the electrodes 4, 5 of the end of the stem 21. After which the filaments 6, 7 are gripped on their respective electrodes, those at the foot 2, 3 being close to one another so as to conform to the separation, and the stem is mounted, welded 11 to the envelope previously coated with powder, the latter being removed from the borders of the weld. The mercury 16 is disposed in the envelope by the exhaust tube, and the copper strands 19 of the electrodes are joined. <IMAGE>
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