A shield for a combustion chamber of a hot water heater is described. In one embodiment, a travel data processing system may comprise, for example, a communication network. The conductive pattern part 40 is formed, for example, around each of holes 21c and 21d on the plane on which the wing surface panel 21A and the wing surface panel 21B abut against each other. At the TAP, an ASL tunnel may be created to the local application in the network to facilitate the communication. One zipper tape extends, in the form of an extension, over the other zipper tape to overlap a part of the other zipper tape.