Small, high efficiency planar fluorescent lamp
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 8, 2000
Grant Date -
N/A
app pub date -
Feb 2, 1998
filing date -
Feb 2, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A small fluorescent lamp having improved efficiency is described. The lamp includes a lamp body having a serpentine channel therein. The serpentine channel is arcuate in cross section with a fluorescent coating covering the serpentine channel but not the lamp cover to produce an aperture effect. The serpentine channel is reflective such that the cross section forms an aperture effect lamp to improve efficiency. Efficiency is further improved by raising the pressure within the lamp to 70-120 torr. Further efficiency is obtained by limiting the depth of the serpentine channel relative to the width of the serpentine channel such that the electrical discharge is confined within a small cross sectional area. In one embodiment, secondary housings are attached to the lower surface of the lamp to conceal the electrodes beneath the lamp, thereby improving the uniformity of the lamp.
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