PLASMA LIGHTING SYSTEM

An electrodeless lighting device according to an embodiment includes a magnetron to which a high voltage is applied to generate microwaves, a waveguide coupled to the magnetron to guide the microwaves generated by the magnetron, a resonator coupled to an outlet of the waveguide to prevent the microw...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JUN, JONG GIL, PARK, KYUNG HOON
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:An electrodeless lighting device according to an embodiment includes a magnetron to which a high voltage is applied to generate microwaves, a waveguide coupled to the magnetron to guide the microwaves generated by the magnetron, a resonator coupled to an outlet of the waveguide to prevent the microwaves from being discharged to the outside so as to form a resonance mode, an electrodeless bulb arranged inside the resonator and having a light emitting material excited by the microwaves to emit light, a rotary shaft configured to transfer a rotational force of the motor to the electrodeless bulb and arranged through waveguide, a driving shaft supporter configured to support the motor to be spaced apart from the waveguide and having a shaft hole through which the rotary shaft passes, a sealing ring configured to seal a space between the driving shaft supporter and the motor, and a seating groove formed in the driving shaft supporter such that the sealing ring is seated thereon, wherein an upper portion of the seating groove is opened, and a side surface, which is formed to be relatively farther away from the rotary shaft, among side surfaces of the seating groove, is opened. In the present invention, the electrodeless bulb is rotated by the motor, so that an electric field is prevented from being focused on the electrodeless bulb, and local heating of the electrodeless bulb is prevented. 실시예에 따른 무전극 조명기기는 고전압이 인가되어 마이크로파를 생성시키는 마그네트론, 상기 마그네트론에 결합되어 상기 마그네트론에서 발진된 마이크로파를 안내하는 도파관, 상기 도파관의 출구 측에 결합되어 마이크로파의 외부 방출을 차폐하여 공진모드를 형성하는 공진기, 상기 공진기의 내부에 배치되어 마이크로파에 의해 여기되어 빛을 발광하도록 발광물질이 구비되는 무전극전구, 회전력을 공급하는 모터, 상기 모터의 회전력을 상기 무전극전구로 전달하고, 상기 도파관을 관통하여 배치되는 회전축, 상기 모터를 상기 도파관에서 이격되게 지지하고, 상기 회전축이 관통되는 축홀이 형성되는 구동축 서포터, 상기 구동축 서포터와 모터의 사이를 밀폐하는 밀폐링 및 상기 구동축 서포터에 형성되어 상기 밀폐링이 안착되는 안착홈을 포함하고, 상기 안착홈은 상부가 개방되고, 측면들 중 상기 회전축에서 상대적으로 멀게 위치된 측면이 개방되게 형성되는 것을 특징으로 한다.