Title:
DISCHARGE LAMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/046458
Kind Code:
A1
Abstract:
In a discharge lamp device according to the present invention having a discharge lamp, a coaxial wave guide tube guiding an electromagnetic wave to the discharge lamp, and an electromagnetic wave shielding part surrounding the discharge lamp, the electromagnetic wave shielding part is provided so as to prevent leakage of electromagnetic waves with little blockage of radiated light, not require a ceiling part, and be able to increase the light flux of the discharge lamp. The electromagnetic wave shielding part (50) is formed into a cylindrical shape by a plurality of conductive members (51) extending in the axial direction of the coaxial wave guide tube, the length of the portion of the electromagnetic wave shielding part (50) not containing the discharge lamp (10) being one-fourth of the wavelength of the electromagnetic waves or longer.
Inventors:
MATSUNAGA MOTOMU (JP)
TAMAKI KOUSEI (JP)
KANDO MASASHI (JP)
HUSARIK JAN (JP)
KRAL MARTIN (JP)
TAMAKI KOUSEI (JP)
KANDO MASASHI (JP)
HUSARIK JAN (JP)
KRAL MARTIN (JP)
Application Number:
PCT/JP2014/075700
Publication Date:
April 02, 2015
Filing Date:
September 26, 2014
Export Citation:
Assignee:
TOKYO KEIKI INC (JP)
PLASMA APPLIC INC (JP)
PLASMA APPLIC INC (JP)
International Classes:
H01J65/04; F21S2/00; H05K9/00; F21Y101/00
Foreign References:
| JP4714868B2 | 2011-06-29 | |||
| JPH11135285A | 1999-05-21 |
Attorney, Agent or Firm:
Takahashi, Hayashi and Partner Patent Attorneys, Inc. (JP)
Patent business corporation Takahashi and wood and partners (JP)
Patent business corporation Takahashi and wood and partners (JP)
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