| 摘要 |
PROBLEM TO BE SOLVED: To prevent an accident due to an increase in internal pressure when gas is generated from a battery, while ensuring airtightness in a case with simple configuration.SOLUTION: A highly airtight apparatus includes a lithium ion battery 2, a body case 1 having an upper opening 12 with an inward flange 15 formed on the inside and internally housing the battery 2, a display panel 6 placed on the inward flange 15 and provided to close the upper opening 12 of the body case 1, and an adhesive layer 7 provided between the display panel 6 and inward flange 15. The display panel 6 is placed on the inward flange 15 with the adhesive layer 7 interposed therebetween, and fitted and fixed to the upper opening 12 of the body case 1. The adhesive layer 7 has a weak adhesive force for the internal pressure in the body case 1, compared with the display panel 6 and body case 1. |
