LIGHT EMITTING DIODE (LED) FILAMENT LAMP WITH VARIABLE COLOR TEMPERATURE
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United States of America Patent
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Issued Date -
Mar 30, 2023
app pub date -
Nov 25, 2020
filing date -
Nov 25, 2020
priority date (Note) -
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Abstract
Alight emitting diode (LED) filament lamp with a variable color temperature includes a lamp cap, a mounting piece connected to the lamp cap, a casing connected to the mounting piece, a stem arranged in the casing, an LED filament arranged on the stem, a dual in-line package (DIP) switch connected to the stem, and a driving power supply connected to the DIP switch. The LED filament includes a substrate, a first pin arranged at one end of the substrate, a second pin arranged at the other end of the substrate. The LED filament is of an integral structure. Through the arrangement of the DIP switch or a control switch, the first pin and the second pin can switch a positive pole or a negative pole of an output terminal of the driving power supply, thereby realizing switching of different color temperatures.
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