As the safety director for a large manufacturing plant, I was in charge of making sure the exit lights were working. Before LED's, these used incandescent lights in them. They burned out in maybe 6 months, nearly insuring that at the time of any inspection, at least one would be burned out.
I made a small, but simple modification to each light, adding a series diode (1N4001 or higher) to one wire feeding the AC bulb. This would change the AC to pulsating DC.
The AC would minutely vibrate the bulb filament, which would hasten failure. Changing to DC lessened the vibration due to the polarity of the voltage changing 60 times a second.
The result was that bulbs would last 2-3 years instead of 6 months.
It might be a better solution for you...just one diode on the socket.
With an LED you would need to change to DC also.