Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Reexamination Certificate
2006-07-04
2010-12-14
Truong, Bao Q (Department: 2875)
Illumination
Light source and modifier
With ventilating, cooling or heat insulating means
C362S218000, C362S264000
Reexamination Certificate
active
07850343
ABSTRACT:
A mercury light source tube such that a detrimental effect on its lifetime caused by gathering of mercury at peripheral portions of electrodes can be prevented or controlled, a light source device, and a display device. The mercury light source tube has a tube body in which mercury is sealed, electrodes provided to the tube body, and projections provided on an outer surface of the tube body to be integral with the tube body. The projections are placed between the electrodes or in positions at a distance from the electrodes toward the tube body center. The projections locally increase the surface area of the tube body so as to easily radiate heat to the outside, and locally decrease temperatures of the positions where the projections are placed and their peripheral portions so that mercury gathers at the low temperature portions.
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patent: 2425697 (1947-08-01), Hultgren
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patent: 6839100 (2005-01-01), Saito et al.
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Official communication issued in counterpart International Application No. PCT/JP2006/313279, mailed Oct. 10, 2006.
English translation of JP 62-49853 U published on Mar. 27, 1987.
English translation of JP 36-22253 Y1 published on Aug. 26, 1961.
Keating & Bennett LLP
Sharp Kabushiki Kaisha
Truong Bao Q
LandOfFree
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