Integrally molded flat compact fluorescent lamp

摘要

An integrally moulded flat fluorescent lamp comprises a channelled member 11 of vitreous glass with a convoluted channel 14 fabricated by employing a combination of vacuum-assisted sag moulding, press-moulding and blow-moulding techniques. While the channelled member 11 is molten, a planar member 13 is fused to it by pressing the members together at 15 to form a closed lamp envelope. The inside of the resulting envelope is coated with a phosphor layer and preferably the external surface of the envelope is coated with a reflective layer. A pair of electron-emissive electrodes are fused to openings 12 in the envelope. The electrodes are sealed through glass flares at the two openings in the envelope. The lamp envelope is evacuated and filled with a rare gas and mercury to a suitable pressure and sealed off to form a lamp. <IMAGE>