Carpmart
LIFE MEMBER
Indeed they have!
A surprising number of domestic 240v Smart TVs are actually run off 19v DC via the transformer/PSU on the 3 pin mains lead. You can buy a laptop 12v to 19v PSU on eBay etc. and run it from a 12v vehicle ciggie type socket or wire it into a suitable 12v supply.
We have a 22” LG Smart TV/Monitor from an Argos sale and it’s working perfectly in the van - also has the Firestick piggybacked on it’s USB port with no issues.
I think you may have been able to find TV/Monitor previously as you describe but not anymore.
I’ve recently been through the process of looking for a monitor as you’re suggesting and couldn’t find a single one with an off board 230v power brick so that I could run off 12v using a buck converter.