JPS61126594U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a heated tatami according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA in FIG. FIG. 3 is a plan view of the self-temperature-adjusting planar heating element, and FIG. 4 is an enlarged longitudinal sectional view of the same part. Figure 5 is a graph showing the relationship between energization time and temperature when the mixing ratio of polyethylene glycol and graphite powder is changed, and Figure 6 shows that the graphite powder in Figure 5 is 60%
3 is a graph showing the relationship between initial energization time, temperature, and current value when Figure 7 is a graph showing the relationship between temperature and electrical resistance when cyclic polyethers are used, and Figure 8 is a graph showing the relationship between temperature and electrical resistance when linear polyethers are used. be. FIG. 9 and FIG. 10 are graphs showing the relationship between the energization time and temperature, and the energization time and current (or power consumption) of the planar heating element of the example. 1... Tatami floor, 2... Tatami surface, 3... Self-temperature regulating planar heating element, 4... Electrode, 5... Sheet-like insulator, 7... Tatami edge.

Claims (1)

[Scope of utility model registration request] Between the tatami bed 1 and the tatami table 2, an organic compound containing a plurality of alkylene oxides as a unit structure in its molecule and fine carbon particles in the form of powder, fibers, whiskers, etc. are placed between the two upper and lower electrically insulating sheets. A heating tatami mat comprising a self-temperature-adjusting planar heating element 3 in which a heat-sensitive electrical resistance composition having the property of rapidly changing electrical resistance with respect to temperature changes of up to about 50° C. is enclosed together with electrodes.