That TV's documentation says it does have a headphone jack somewhere on the side. If it really doesn't:
If the amp/receiver that powers the speakers already has optical in, just run optical out from the tv to optical in on the amp/receiver.
If it doesn't, one of these can turn the optical out signal into stereo line out, which you can run to whatever you use to drive your bose speakers with:
http
/www.monoprice.com/product?p_id=6884