Doing a quick search on the internet... everything I read states that it is legal to open carry in Ohio with out a permit but you must be licensed to open carry in a vehicle. You must also be licensed to conceal carry in Ohio and there is no legal definition of concealed. Should you be carrying openly and momentarily conceal your firearm you could be cited, detained, etc... etc... and it is left up to the judges to define on a case by case basis of what concealed is if you do so with out a permit to do so.