| 摘要 |
PURPOSE: A warm lunch box is provided to easily open and close the upper case part thereof without the slip of a hand by increasing the frictional force of a user hand by an anti-slip part formed at the outer peripheral surface of the lower case part. CONSTITUTION: A keeping warm lunch box comprises: a lower case part(110) which is hollow and has one open surface so as to keep food and the other closed surface; and a case part(120) coupled to one side of the lower case part to keep the food in the lower case part warm. The lower case part includes an anti-slip part(111) increasing the frictional force between the outer peripheral surface of the lower case part and the user hand gripping the lower case part.
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