Title:
METAL VAPOR DISCHARGE LAMP
Document Type and Number:
WIPO Patent Application WO/2007/088729
Kind Code:
A1
Abstract:
A metal vapor discharge lamp comprising a light emitting tube, an airtight tube
containing the light emitting tube, and a base bonded to one end of the airtight
tube with adhesive, wherein the airtight tube is covered with a protective tube
in order to enhance safety as compared with a case where the protective tube is
simply bonded to the base with adhesive. The protective tube is fixed to the base
with a double fall-off prevention structure, and locked to the base when a force
including gravity and inertia acts toward the bottom of the protective tube in
the axial direction thereof. When the above-mentioned structure is employed,
a protection wall for ensuring safety is not required on the lighting device side
to be fixed with the metal vapor discharge lamp, and upsizing of the lighting device
can be suppressed.
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Inventors:
KAKISAKA SHUNSUKE
Application Number:
PCT/JP2007/050595
Publication Date:
August 09, 2007
Filing Date:
January 17, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
KAKISAKA SHUNSUKE
KAKISAKA SHUNSUKE
International Classes:
H01J61/34; H01J5/50; H01J61/50
Domestic Patent References:
| WO2006001166A1 | 2006-01-05 |
Foreign References:
| JP2003031004A | 2003-01-31 | |||
| JPH09320541A | 1997-12-12 | |||
| JPH0917330A | 1997-01-17 | |||
| JP2003045218A | 2003-02-14 | |||
| JPH10283996A | 1998-10-23 | |||
| JPH1196973A | 1999-04-09 |
Other References:
See also references of EP 1983550A4
Attorney, Agent or Firm:
NAKAJIMA, Shiro et al. (2-1 Toyosaki 3-chome, Kita-ku, Osaka-sh, Osaka 72, JP)
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