| 摘要 |
PURPOSE: Provided is a discharge tube to reduce generating amount of an ozone harmful for human body, to generate ion cluster, and to remove and disinfect odors and volatile organic compounds. CONSTITUTION: The discharge tube(10) includes a high voltage electrode(12) in form of a cylinder to which a voltage generated from a high voltage generator(11) is applied and which is coated with a silver, nickel, copper or aluminum for increasing generating amount of an ion, a ground electrode(13) formed from a stainless steel, copper or aluminum screen for increasing generating amount of an ion, a dielectric case(14), and an insulator(15) sealing an interior space of the dielectric case for completely insulating the high voltage electrode and the ground electrode. The ground electrode is spaced from the high voltage electrode and surrounds the high voltage electrode. The dielectric case is disposed between the both electrodes, and is made thin so as to lower applied voltage, thus to reduce the generating amount of the ion. Polarization charges generate at a surface of the dielectric case contacting the both electrodes.
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