noun
unattended sales place; self-service shop; vending machine
Refers to a place where goods are sold without staff present, such as an unmanned vegetable stand, a self-service kiosk, or a vending machine. The term can cover both fixed-location vending machines and small unattended shops.
田舎の道沿いに野菜の無人販売所がある。
There is an unattended vegetable stand along the country road.
駅の無人販売所で切符を買った。
I bought a ticket at the station's self-service machine.
自動販売機 specifically refers to a vending machine, while 無人販売所 is a broader term that can include unattended stands, self-service shops, and vending machines.
Compound of 無人 (unmanned, without people) + 販売 (sales) + 所 (place). The term is straightforward and modern, with no obscure historical derivation.