Electric lamp and discharge devices: systems – With load device temperature modifier
Patent
1992-12-23
1994-10-11
Mis, David
Electric lamp and discharge devices: systems
With load device temperature modifier
315248, 315344, 313 11, 313 12, 313 35, 313 46, H05B 4124, H01J 6152, H01J 150
Patent
active
053550544
ABSTRACT:
An electrodeless low-pressure discharge lamp having a sealed discharge vessel filled with a metal and a rare gas and having a cavity. An inductive device is disposed in the cavity for generating a high-frequency electric field inside the discharge vessel during lamp operation. The inductive device includes a winding of metal wire surrounding a cylindrical core of magnetizable material. A cooling body is in contact with the cylindrical core for removing heat generated in the core during lamp operation. The cooling body is closed in a gastight manner and includes a condenser, an evaporator, a liquid, and a capillary structure (T, U) which comprises a winding (U) of gauze surrounding a vapor channel (V) for transporting the liquid from the condenser to the evaporator. The capillary structure has a central partition wall (T), which divides the vapor channel in two, and is connected along two opposing longitudinal sides thereof to the gauze winding (U). The cooling body has very good cooling properties, so that the electrodeless low-pressure discharge lamp has a high luminous efficacy.
REFERENCES:
patent: 2800605 (1957-07-01), Marchese
patent: 5006752 (1991-04-01), Eggink et al.
patent: 5291091 (1994-03-01), Eggink et al.
Van de Peppel Nico H.J.
Van der Aa Herman H.M.
Van Lierop Dirk F.W.
Mis David
U.S. Philips Corporation
Wieghaus Brian J.
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