| 摘要 |
A waveguide structure is provided to obtain an electrodeless lighting system having a compact size, by arranging a bulb rotating motor into a motor mounting portion formed beneath a waveguide. An electrodeless lighting system comprises a case(101), a high voltage generator(102), a magnetron(103), a waveguide(104), a bulb(105), a resonator(106), a reflector(107), and a bulb rotating motor(108). The case has an accommodation space formed therein. The high voltage generator is mounted in the accommodation space of the case so as to boost an AC voltage into a high voltage. The magnetron is spaced apart from the high voltage generator such that the magnetron receives the high voltage generated from the high voltage generator and generates microwave. The waveguide is communicated to the output portion of the magnetron such that the waveguide guides the microwave generated from the magnetron. The bulb is protruded outward from the case and encapsulated with a light emitting material so as to emit light by a plasma discharge performed by the microwave guided by the waveguide. The resonator is arranged to cover the bulb, cut off a leakage of microwave, and permit the emitted light to exit. The reflector is arranged to cover the bulb and the resonator, and reflect light emitted from the bulb. The bulb rotating motor is disposed in the case, and rotates the bulb such that the bulb is prevented from being partially heated. A motor mounting portion(111) is recessed beneath the waveguide so as to accommodate the bulb rotating motor.
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