US Patent 8419223 LED tube to replace fluorescent tube

Presented is an LED light tube in the general configuration of a prior art fluorescent tube. The LED light tube includes end caps with electrodes at each end, with the electrodes providing physical mounting structure to mount the LED light tube in an existing LED light fixture. The end caps of the LED light tube are not electrically active, but merely provide physical mounting structure to mount the LED light bulb in an existing fluorescent light fixture. This allows existing LED light fixtures to be utilized without replacement, by merely replacing the tubes and ballast with LED based equipment.