How to power an 220v AC bulb from 1.5v dc from an LED
Use the LED voltage for turning on an N channel MOSFET. The MOSFET (and a suitable extra DC supply) can then turn on the appropriate relay and thus activate the lamps.

So, you need MOSFETs and an extra DC supply. If you already have a bunch of 3V relays, the extra DC supply could be 3.3 volts because they are likely to be more common than a 3V supply but please do check the specifications for the relays.