Patent ID: 11946626
Assignee: ALEDDRA INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H | IPC F  H

Claim 0:
1. A light-emitting diode (LED) lamp, comprising:
an elongated housing;
one or more LED arrays, facing a first direction;
a rechargeable battery;
a controller circuit;
a first driver configured to convert a first external power to a first internal power to drive the one or more LED arrays in a normal mode;
a charging circuit configured to convert a second external power to a second internal power to charge the rechargeable battery;
a second driver configured to draw a third internal power from the rechargeable battery and to convert the third internal power to a fourth internal power to drive the one or more LED arrays in an emergency mode; and
a user interface section disposed on an opaque portion of the elongated housing and facing the first direction,
wherein:
a portion of the elongated housing comprises either a translucent or a transparent lens to allow a light emitted from the one or more LED arrays to shine through;
the charging circuit comprises a first battery protection circuit configured to monitor a charging condition and to automatically disable the second internal power to the rechargeable battery, thereby preventing the rechargeable battery from being overcharged or creating a fire hazard;
when the second external power is detected, the controller circuit is configured to operate the one or more LED arrays in the normal mode by (1) enabling the charging circuit to charge the rechargeable battery, (2) disabling the second driver to draw the third internal power from the rechargeable battery, and (3) enabling the first driver to supply the first internal power to light up the one or more LED arrays;
when the second external power is not detected, the controller circuit is configured to operate the one or more LED arrays in the emergency mode by enabling the second driver to draw the third internal power from the rechargeable battery and to supply the fourth internal power to light up the one or more LED arrays; and
the user interface section comprises:
a first indicator configured to indicate whether the rechargeable battery is being charged or not; and
a battery shutoff mechanism configured to disable the rechargeable battery to provide the third internal power to the second driver.