Waterproof device with air cell power source
Provided is a waterproof device that is impervious to water and can also use an air cell as a power source. The waterproof device of the present disclosure is worn on the body and includes a circuit unit, a power source, and an exterior package that protects the circuit unit and the power source. At least a part of the exterior package is composed of a water-repellent air-permeable sheet. The water-repellent air-permeable sheet has a water pressure resistance of 12 kPa or more.
1. A waterproof device that is worn on the body, comprising:
a circuit unit;
a power source; and
an exterior package that protects the circuit unit and the power source,
wherein the power source is a sheet-type air cell, and an electrolyte of the sheet-type air cell is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12,
an adhesive layer is provided on an inner surface of the device,
at least a part of the exterior package is composed of a water-repellent air-permeable sheet, and
the water-repellent air-permeable sheet has a water pressure resistance of 12 kPa or more.
2. The waterproof device according to claim 1 , wherein the water-repellent air-permeable sheet has an air permeability of 60000 sec/100 ml or less.
3. The waterproof device according to claim 1 , wherein the water-repellent air-permeable sheet has a thickness of 0.01 to 3 mm.
4. The waterproof device according to claim 1 , wherein the water-repellent air-permeable sheet is a laminated sheet of a porous sheet with water repellency and a support sheet, and
the support sheet is a nonwoven fabric sheet or a rubber sheet.
5. The waterproof device according to claim 4 , wherein the porous sheet is made of polyethylene, polypropylene, or polytetrafluoroethylene.
6. The waterproof device according to claim 4 , wherein the nonwoven fabric sheet is made of polyethylene, polypropylene, polytetrafluoroethylene, or nylon.
7. The waterproof device according to claim 4 , wherein the rubber sheet is a urethane rubber sheet or a silicone rubber sheet.
8. The waterproof device according to claim 1 , comprising:
a functional element that comes into contact with the skin;
a drive circuit unit that operates the functional element; and
a sheet-type cell as the power source in which a power generation element, including a positive electrode and a negative electrode, is sealed between two sheet-type outer case members,
wherein one of the sheet-type outer case members that is on an outer side of the sheet-type cell constitutes a part of the exterior package that is a shell member provided on an outer surface side of the entire device.
9. The waterproof device according to claim 8 , wherein the drive circuit unit and the sheet-type cell are stacked.
10. The waterproof device according to claim 8 , wherein the cell is an air cell, and the water-repellent air-permeable sheet is disposed in a portion of the sheet-type outer case member that is on the outer side of the sheet-type cell and faces the positive electrode.
11. The waterproof device according to claim 1 , wherein the water-repellent air-permeable sheet is disposed in a portion of the exterior package that faces a positive electrode of the sheet-type air cell.