Abstract: In an IDT electrode of an acoustic wave element which includes first electrode fingers and second electrode fingers connected to potentials which are different from each other and arranged spaced apart from each other, the first electrode fingers includes first tip parts, and either of the first electrode fingers and the second electrode fingers includes, at a tip area extending along a direction of propagation of an acoustic wave and overlapping with the first tip parts, increase sections in which electrode volumes per unit lengths in a direction of extension of the first electrode fingers and the second electrode fingers are larger in comparison with that of the center area in which the electrode fingers intersect.

Abstract: In an IDT electrode of an acoustic wave element which includes first electrode fingers and second electrode fingers connected to potentials which are different from each other and arranged spaced apart from each other, the first electrode fingers includes first tip parts, and either of the first electrode fingers and the second electrode fingers includes, at a tip area extending along a direction of propagation of an acoustic wave and overlapping with the first tip parts, increase sections in which electrode volumes per unit lengths in a direction of extension of the first electrode fingers and the second electrode fingers are larger in comparison with that of the center area in which the electrode fingers intersect.

Abstract: In at least one sealing member (16) disposed between at least two neighboring cells of a plurality of cells (3) in this cell stack device, the angle ? is 45° or less, where the angle ? is defined by an angle between a vertical line drawn from a leading end portion (18) of a meniscus structure toward a manifold (7) and a straight line connecting the leading end part (18) and a point (19) located on a profile line of a concave of the meniscus structure, and at a midpoint of a height of the leading end part (18) from the bottom part (17) of the concave, which makes it possible to obtain a cell stack device in which the occurrence of cracking at bonded parts between the fuel cells (3) and the sealing member (16) is suppressed and reliability is improved.

Abstract: [Problem] To provide a cell stack device, module, and module housing device having improved reliability. [Solution] In at least one sealing member (16) disposed between at least two neighboring cells of a plurality of cells (3) in this cell stack device, the angle ? is 45° or less, where the angle ? is defined by an angle between a vertical line drawn from a leading end portion (18) of a meniscus toward a manifold (7) and a straight line connecting the leading end part (18) and a point (19) located on a profile line of a concave of the meniscus, and at a midpoint of a height of the leading end part (18) from the bottom part (17) of the concave, which makes it possible to obtain a cell stack device in which the occurrence of cracking at bonded parts between the fuel cells (3) and the sealing members (16) is suppressed and reliability is improved.

Abstract: A timer reservation device has a reservation data store section, a reservation history store section and a clock section. The reservation data store section stores recording reservation dataset for reservation. The reservation history store section stores recording reservation data concerning recording which was executed. The clock section outputs present month and day, time, and ay of the week data. The day of the week data of the recording reservation data in the reservation history store section is compared with the day of the week data from the clock section. Month and day data of the recording reservation data is changed to be stored in said reservation data store section.