LOW-PRESSURE DISCHARGE LAMP

摘要

1 PHN. 9408. Low-pressure gas discharge lamp having a discharge vessel which comprises a plurality of parallel tubular portions which are interconnected in series by means of one or more coupling links of engaging those portions substantially transversely, the discharge passing through the coupling link(s) and a t least the major parts of the tubular portions during operation of the lamp, a coupling link engaging a tubular portion at such a distance from the end of a tubular portion that a cool spot is created in the lamp at that end.