noun
open refrigerated display case; open-air cooler; grab-and-go refrigerator
A refrigerated display case without doors, commonly found in convenience stores and supermarkets for drinks, sandwiches, and other grab-and-go items.
from English open case
コンビニのオープンケースからおにぎりを取った。
I took a rice ball from the open refrigerated case at the convenience store.
夏はオープンケースの飲み物がよく冷えている。
In summer, the drinks in the open-air cooler are nicely chilled.