| 摘要 |
The invention relates to a fluorescent lamp having a transparent or translucent glass bulb of a tubular cross section containing an inert gas such as Neon, Argon, Krypton or Xenon. An element to produce an electric discharge within the bulb will energize a coating of a fluorescent material deposited on the interior surface of the glass bulb to emit visible light. At least one region uncoated by the fluorescent material is provided at the interior surface of the glass bulb in manner which creates the appearance of a repeating pattern such that visible light is emitted by the fluorescent material and no visible light is emitted by the at least one region uncoated. The region uncoated define a spiraled pattern to the glass bulb such that when the glass bulb is rotated about the axis of the spiraled pattern a generally upwardly or downwardly motion is perceived by a person looking at the lamp.
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