Electric lamp and discharge devices – With temperature modifier – Using liquids or fluid flow directing means
Reexamination Certificate
2003-07-03
2008-10-21
Roy, Sikha (Department: 2879)
Electric lamp and discharge devices
With temperature modifier
Using liquids or fluid flow directing means
C313S011000, C313S036000, C313S567000, C313S017000, C313S022000, C313S024000
Reexamination Certificate
active
07439660
ABSTRACT:
A discharge lamp, and particularly a high-pressure gas-discharge lamp (an HID (high-intensity discharge) lamp or UHP (ultra-high performance) lamp), having a reflector and a cooling means is described. The cooling means comprises at least one nozzle (3) by which a flow of gas can be directed onto the discharge lamp, the at least one nozzle (3) being so arranged that it does not extend, at least to any substantial degree, into a beam path produced by the lamp (2) and the reflector (1). In this way, the cooling means does not produce any obstacles on the beam path for the light. With preferred embodiments, it is possible to produce a turbulent flow that surrounds particularly the discharge vessel (21) of the lamp and that considerably increases the effectiveness of the cooling means. Further embodiments also allow the discharge lamp to be operated in a plurality of different positions without individual regions of the lamp being too little or too severely cooled.
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patent: 4695757 (1987-09-01), Ury et al.
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Certified English translation of JP 05-054862 (Sakugi).
Certified English translation of JP 10-125287 (Kaneko et al.).
Maes Wouter Jozef
Moench Holger
Pollmann-Retsch Jens
Verstraeten Edmond Mariette E
Koninklijke Philips Electronics , N.V.
Roy Sikha
Walford Natalie K
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