| 摘要 |
<p>A lunch box comprises a lunch box main body (400) and a lunch box cover (100). The lunch box cover (100) is provided with a steam overflow hole (1011) and an overflow hole cover (102) for covering the steam overflow hole (101). The overflow hole cover (102) comprises a mounting column (1022) fixed on the lunch box cover, and an elastic umbrella-shaped cover cap (1021) disposed at one end of the mounting column (1022) and sealing the overflow hole (1011) inside. When the top of the umbrella-shaped cover cap (1021) is pressed, the umbrella-shaped cover cap (1021) is deformed inversely to make the overflow hole cover (102) in an open state. The lunch box cover (100) is provided with the steam overflow hole (1011), so that the lunch box cover (100) can be prevented from rushing out due to hot air when food in the lunch box is heated, and a user is prevented from being scalded because too much inside hot air is suddenly released when the lunch box is opened. The steam overflow hole (1011) is provided with the overflow hole cover (102), dust or another pollutant is prevented from falling into the lunch box from the steam overflow hole, and it is also avoided that rice and dishes in the lunch box are in direct contact with external air to reduce the fresh-keeping performance.</p> |
