Lamp assembly with LED and fluorescent lamp
AssigneeOsram Sylvania Inc.
InventorsJohn M. George, Heinz W. Ito, Robert Y. Pai
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Abstract
A lamp assembly includes a lamp base having power input terminals, a fluorescent lamp connected to the terminals through a manually operated switch that is on an exterior of the lamp base so that when power is supplied to the terminals the fluorescent lamp is selectively powered by manual operation of the switch, and a light emitting diode (LED) inseparably connected to the terminals so that when power is supplied to the terminals the LED is always powered. This arrangement allows the LED to be ON regardless of the operating status of the fluorescent lamp and allows the fluorescent lamp to be turned OFF while the LED remains ON.
Claims12
A lamp assembly that is a combination of a fluorescent lamp and a light emitting diode (LED), comprising at least one LED that is always ON when power is supplied to the assembly, and the fluorescent lamp with a switch that controls power supply only to said fluorescent lamp, and further comprising a transformer with first turns that carry a feedback voltage for operation of said fluorescent lamp and with second turns that are electrically connected only to said switch so that operation of said switch shorts said second turns, thereby stopping operation of said fluorescent lamp.
Dependencies are inferred from the claim text.