Arrangement in electric discharge lamps
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United States of America Patent
Stats
-
Aug 25, 1987
Grant Date -
N/A
app pub date -
Feb 7, 1986
filing date -
Feb 12, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An adapter for connecting a compact gas vapor electric-discharge lamp to standardized incandescent lamp fittings. The adapter (11) comprises a coupling housing (12), a holder part (13) for the base (14) of the lamp, and a conventional incandescent-lamp base (15). The adapter has a basic form corresponding substantially to the lower part of a standard incandescent lamp. The upper part of the adapter is formed by the holder part (13), which presents a central recess (21) into which the base (14) of the lamp (17) can be inserted, and a reflective cover plate (22), which surrounds the recess (21). The ignition and drive circuits (16) of the electric-discharge lamp includes an electronic frequency converter for converting mains frequency to a high frequency. The constituent electrical components are incorporated both around the recess (21) and in the lamp base (15) and are mutually connected via a circuit card (18) arranged between these parts.
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