I have a 47" LG TV that is non Bluetooth. It is a 2013 model. It has a USB portal and a optical audio connection. What kind of adapter would I need to go to wireless Bluetooth speakers to make the TV Bluetooth capable.
If the TV does not specifically have a bluetooth adapter that works for it (and there is no list on support forums) then you can not just buy a usb dongle and it work.
Computers are able to load drivers to be able to use a vast assortment of devices. While most TVs use a striped down version of linux these days, if the OEM did not specifically add support for that bluetooth adapter, it will not work.