| 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. A means to produce an electric discharge within said bulb will energise 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 said fluorescent material is provided at said interior surface of the glass bulb in manner which creates the appearance of a repeating pattern such that visible light is emitted by said fluorescent material and no visible light is emitted by said at least one region uncoated. The regions 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.
|
