| 摘要 |
PROBLEM TO BE SOLVED: To provide a prepaid-type movable gas device that can easily make payment for use charges including a gas bill with a prepaid card.SOLUTION: In a management system 30 of a movable gas device 1, a card management company issues a prepaid card C to a gas undertaker 35 from a card issuance management device 31, and the gas undertaker 35, who provides a user 36 with the movable gas device 1, records the amount of money that the user has pre-paid into the prepaid card C using a card charge device 32 and issues the prepaid card C to the user. The user allows a prepaid amount A1 to be read by placing the prepaid card C over a management unit 4 of the device 1, so that the user can use the gas device 1 for the prepaid amount of money under control of the management unit 4.SELECTED DRAWING: Figure 3 |
