Any person who knowingly enters in, upon or under a structure or conveyance without being authorized, licensed or invited, or having been authorized, licensed or invited is requested to depart by the owner, tenant or the agent of such owner or tenant, and refuses to do so, shall be guilty of a misdemeanor, and, upon conviction thereof, shall be fined not more than $100.
If the offender is armed with a firearm or other dangerous weapon while in the structure or conveyance, with the unlawful and felonious intent to do bodily injury to a human being in said structure or conveyance at the time the offender knowingly trespasses, such offender shall, notwithstanding the provisions of section one, article seven, chapter sixty-one of this code, be guilty of a misdemeanor, and, upon conviction thereof, shall be fined not less than $100 nor more than $500, or be confined in the county jail for a period not to exceed twelve months, or both such fine and imprisonment.