Ohio Rev. Code Ann. § 2923.12
(A) No person shall knowingly carry or have, concealed on the person's person or concealed ready at hand, any of the following:
(B) No person who has been issued a concealed handgun license shall do any of the following:
(C)
(1) This section does not apply to any of the following:
(D) It is an affirmative defense to a charge under division (A)(1) of this section of carrying or having control of a weapon other than a handgun and other than a dangerous ordnance that the actor was not otherwise prohibited by law from having the weapon and that any of the following applies:
(F)
(2) If a person being arrested for a violation of division (A)(2) of this section promptly produces a valid concealed handgun license, and if at the time of the violation the person was not knowingly in a place described in division (B) of section 2923.126 of the Revised Code, the officer shall not arrest the person for a violation of that division. If the person is not able to promptly produce any concealed handgun license and if the person is not in a place described in that section, the officer may arrest the person for a violation of that division, and the offender shall be punished as follows:
(a) The offender shall be guilty of a minor misdemeanor if both of the following apply:
(b) The offender shall be guilty of a misdemeanor and shall be fined five hundred dollars if all of the following apply: