| 摘要 |
The present invention comprises a double wall formed in a container such as a bottle, cup, or a side dish case, or a lunch box containing contents which easily become spoil, to store water or a liquid in the outside of the container and seals the container to enable the water or the liquid to be cooled or heated to maintain freshness of the contents for a long period of time. Moreover, the present invention relates to the cup and bottle, where ice is generated, for changing to an interesting image and text using thermochromic paint (changing color due to a change in temperature) to allow a user to enjoy drinking, singing, and dancing in a more enjoyable manner. The present invention relates to the cup and the bottle where the image is changed, and a cover which does not require a bottle opener. |
