The locality may adopt ordinances to prohibit obscenity or conduct paralleling the provisions of Article 5 (§ 18.2-372 et seq.) and Article 6 (§ 18.2-390 et seq.) of Chapter 8 of Title 18.2 and prohibiting the dissemination to juveniles of, and their access to, materials deemed harmful to juveniles as defined in subsection (6) of § 18.2-390 in public at places frequented by juveniles or where juveniles are or may be invited as part of the general public. Exceptions as provided in § 18.2-391.1 shall apply thereto. The penalty for violating the provisions of such ordinance shall not be greater than the penalty imposed for a Class 1 misdemeanor.