| 摘要 |
<p>In a method for manufacturing a fluorescent lamp, four dual tubes (21a, 21 b, 22a and 22b) that are previously manufactured are held at a distance in such a manner that the dual tubes can move horizontally. Four portions for connection are simultaneously heated, and two of the dual tubes (21a and 21 b) are simultaneously moved horizontally (31) to form bridges (3b) to provide two tube assemblies (23a and 23b). Furthermore, annealing after bridge connection and the connection of tube assemblies (23a and 23b) with a further bridge are performed simultaneously. Thus, a compact fluorescent lamp comprising eight glass tubes that are connected with bridges to form continuous discharge paths can be obtained. According to the manufacturing method, bridge connection can be performed in a small space and with high productivity, and a fluorescent lamp having a good quality with minor variations in the quality of the bridge portions can be provided. Alternatively, the bridge between the two dual tubes (22a and 22b) can be formed before the bridges are formed between the dual tubes (22a and 22b) and the dual tubes (21a and 22a, and 21b and 22b).</p> |
