| 摘要 |
The invention relates to an electric filament lamp having a tubular envelope, in which a coiled coil filament is stretched. The filament is supported by a wire support a coiled part of which encloses a part of one turn of the filament, the inner diameter of said coiled part being maximum 1.5 times the outer diameter of the turn, and the length being minimum 1.5 times said outer diameter.
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