LISBON — The warm glow of the Brian’s Barbershop sign continued to glow over the village’s historic district Friday night, its owner cleared of all charges facing him. County Municipal Court Judge Mark Frost issued a judgment entry Friday declaring Brian Davis, West Lincoln Way, not guilty of the four counts of displaying an internally lit sign in a historic district he had been facing. “We feel the system didn’t let me down. They actually listened to all sides and determined what was the law,” Davis said Friday afternoon after learning of the decision in his favor. The village had charged Davis with violating village ordinances prohibiting signs with internal lighting inside the historic district on four separate nights. The ordinance they cited set historic district design standards that called for elimination of internally lit plastic signs and for each sign in the district to be lit by a light source mounted in front of the sign and with a metal shield over the light source.