Compact fluorescent lamp and method for manufacturing

摘要

A compact fluorescent lamp (1) comprises a discharge tube arrangement (5) with at least one discharge tube (21, 22, 23, 24). The tube is formed of glass, encloses a discharge volume filled with a discharge gas and has a fluorescent phosphor coating disposed on the inner surface of the tube. The tube forms a continuous arc path and is provided with electrodes disposed at each end of the arc path. The lamp also comprises a ballast circuit (7) connected to the electrodes by lead-in wires (17) and to a supply voltage by lead-out wires (18) for controlling the current in the tube. A bulb shaped outer envelope (2) has a substantially spherical portion (3) enclosing the tube arrangement (5) and an elongated end portion (4) enclosing the ballast circuit (7). The end portion of the outer envelope having an open end on a base side is closed and terminated by a closing means (40) of the same material as the outer envelope (2). The closing means (40) is provided with a tubular opening (19). The lead-out wires (18) are isolated from each other and led through the tubular opening (19) to a base (6) for connecting said lamp to said supply voltage through a socket.