| 摘要 |
A method for producing a compact gas-discharge tube, or lamp, comprising at least two U-shaped main tube components (13, 13') made of glass. The tube components are joined together at one limb in a manner to form a closed, continuous discharge chamber provided with electrodes at each outer end thereof and provided with a layer of fluorescent substance on the inner glass surface thereof. The main tube components are joined together by heating an obliquely cut, free limb-end (15) of one main tube component (13) and joining this heated end to a corresponding, heated end (15') of a further main tube component (13'). The resultant connection (31) is formed while applying heat and is bent in a manner such as to have a U-shaped configuration, substantially devoid of discontinuities. The invention also relates to a compact gas-discharge tube of this kind in which the free, interal cross-sectional area of the connection (21) is at least 50 % of the corresponding area of the limbs, and in which the glass thickness of the connection is at least equal to 50 % of the glass thickness of the limbs. |
