Abstract: The present invention provides a tire air-pressure sensor (30) in which water is hard to intrude into a communication passage (36) communicating with a sensor portion (18a) of an air-pressure sensor element (18) and in which water having intruded into the communication passage (36) is discharged out of a case (32). Two air holes (34), (34) are formed in a crest portion of the case (32) of the tire air-pressure sensor (30) arranged and fixed in a wheel (10) in a manner to be positionally shifted in a rotating direction of the wheel (10), and an opening of an air vent hole (16) is formed in a cap (38) which is put on the air-pressure sensor element (18) arranged in the case (32), at an intermediate position between the two air holes (34), (34) in the rotating direction.

Abstract: The present invention provides a tire air-pressure sensor (30) in which water is hard to intrude into a communication passage (36) communicating with a sensor portion (18a) of an air-pressure sensor element (18) and in which water having intruded into the communication passage (36) is discharged out of a case (32). Two air holes (34), (34) are formed in a crest portion of the case (32) of the tire air-pressure sensor (30) arranged and fixed in a wheel (10) in a manner to be positionally shifted in a rotating direction of the wheel (10), and an opening of an air vent hole (16) is formed in a cap (38) which is put on the air-pressure sensor element (18) arranged in the case (32), at an intermediate position between the two air holes (34), (34) in the rotating direction.

Abstract: In an on-line shopping system including a commerce provider server connected to a network, a user terminal is provided at a user's home and is connected to the network to receive goods information from the commerce provider server and transmit selected goods information and an identification number of the user to the commerce provider server. A multimedia terminal is provided at a store and is connected to the network to transmit the identification number to the commerce provider server and receive the selected goods information from the commerce provider server to acknowledge the selected goods information.