| 摘要 |
PURPOSE: A bulb structure is provided to lengthen the useful life of a bulb by cooling the bulb from the air generated from cooling fans during rotation of the bulb. CONSTITUTION: An electrodeless lighting system comprises a case(1) for accommodating components for generating electromagnetic waves; a bulb(6) protruded outward from the case and encapsulated with a light emitting material; a resonator(9) arranged outside of the bulb, and which prevents a leakage of electromagnetic wave and allows the emitted light to pass; a reflecting shade(10) arranged to cover the bulb and the resonator, and which reflects the light emitted from the bulb; and a plurality of cooling fans(100) arranged along the outer surface of the bulb in such a manner that the cooling fans increase the surface area of the bulb and generate air to cool the bulb.
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