| 摘要 |
PURPOSE: An inlet port structure is provided to reduce noises by preventing a vortex flow in an air guide when air flows through an inlet port of a fan housing. CONSTITUTION: An electrodeless lighting system comprises a case for accommodating components for generating electromagnetic waves; a cooling fan(12) arranged in the lower portion of the case so as to cool the components; a fan housing(13) having an inlet port, and which accommodates the cooling fan; and an air guide(100) arranged in the inlet port of the fan housing. The air guide is formed into a circular shape for guiding the intake air so as to prevent a vortex flow of the air.
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