초록 ▼

A heating and cooling lunch box which can preserve meals at a suitable temperature for taste a long time depending the type of meals. The lunch box has an outer container, an inner container for forming a heating and heat insulating container and a cooling container engaged with the outer container,

A heating and cooling lunch box which can preserve meals at a suitable temperature for taste a long time depending the type of meals. The lunch box has an outer container, an inner container for forming a heating and heat insulating container and a cooling container engaged with the outer container, heat source and cooling source for heating and/or cooling the heating and heat insulating container and the cooling container, and a cover for covering the upper surface of the inner container. The heat source is adjacent to the heating and heat insulating container, and an air opening for flowing intake air is perforated in the side wall of the outer container. The air opening communicates with a heat source containing chamber for containing the heating composition which produces heat in the presence of said flowing intake air in the heat source containing chamber.

대표청구항 ▼

A disposable heating and cooling lunch box comprising an outer container of foamed plastic material, a plastic inner container for forming a heating and heat insulating container and a cooling container, said inner container within and separably engaged with the outer container, a heat source compri

A disposable heating and cooling lunch box comprising an outer container of foamed plastic material, a plastic inner container for forming a heating and heat insulating container and a cooling container, said inner container within and separably engaged with the outer container, a heat source comprising a heating composition and a cooling source for heating and/or cooling the heating and heat insulating container and the cooling container, said heat source being adjacent to said heating and heat insulating container, and a cover for closing the upper surface of the inner container, an air opening for flowing intake air being perforated in the side wall of said outer container and communicating with a heat source containing chamber for containing the heating composition which produces heat in the presence of said flowing intake air in said heat source containing chamber.