Energy saving type of light emitting diode lamp
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United States of America Patent
Stats
-
Nov 23, 2004
Grant Date -
Jun 26, 2003
app pub date -
Jul 9, 2002
filing date -
Dec 25, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An energy saving type of light emitting diode lamp is disclosed. In such a manner, the human body sensor may be used to detect existence of the human body. Thus, the LED lamp is disposed at a low illuminance state normally, and may be converted into a high illuminance state when the human body approaches. In addition, the light sensor may be used to detect the environmental illuminance. Thus, when the environmental illuminance is insufficient, the light source is fully opened or half opened, and when the environmental illuminance is sufficient, the light source is closed. In such a manner, the LED lamp may be operated by a high power with a large current during a short time, so that the LED lamp consumes less electricity, has a long lifetime, and saves energy highly.
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