LED illuminator with capability of stable brightness

Details LED illuminator with capability of stable brightness LED illuminator with capability of stable brightness

2006-07-04

2006-07-04

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Automatic substitution of the power supply

C315S291000, C315S308000

Reexamination Certificate

active

07071625

ABSTRACT:
An LED illuminator with the capability of stale brightness, which has the function of emergent lighting and night lighting, is disclosed. The disclosed LED illuminator has a charging unit, a switching unit, a detecting unit and a voltage-stabilizing unit. The detecting unit is adopted for detecting the brightness of the light in the light. The charging unit is used for charging the battery module of the LED illuminator, while the switching unit is used for replacing the power supply with the battery when needing emergent lighting. The voltage-stabilizing unit is adopted for adjusting the working voltage to keep the brightness stable during the LED illuminating period.

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patent: 6445086 (2002-09-01), Houston
patent: 6479965 (2002-11-01), Barbeau et al.

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