< Topic >Laying down the body immediately, it offers the base rock bathtub device of the structure where the body is difficult to become painful.SolutionsThe metallic plate you attach base rock bath device 10, to the underside of 12 which possesses the S letter section of the form which imitates in the rachis S letter curve of person 11 and this metallic plate and 12 facilities are done and the surface heater the backup material you attach to the surface of 14 which receives 13 which warms metallic plate 12 and metallic plate 12 and metallic plate and 12 you consist of the pocket 17 which is set to each of the lattice space which with the lattice component 15 which facilities is done and lattice component 15 was divided. As for base rock bath device 10, because S shape of character condition of the form which imitates in the rachis S letter curve of person 11 is displayed, the body pressure of the user is dispersed. In addition, pocket 17 hits to the body, because this pocket 17 becomes deformed, furthermore can assure more body pressure dispersion.< Selective figure >Drawing 3【課題】身体を直に横たえても、身体が痛くなりにくい構造の岩盤浴槽装置を提供する。【解決手段】岩盤浴装置10は、人11の脊柱S字カーブに倣った形態のS字断面を有する金属板12と、この金属板12の下面に付設され金属板12を温める面ヒータ13と、金属板12を受けるバックアップ材14と、金属板12の上面に付設される格子部材15と、格子部材15で区切られた格子空間の各々にセットされる小袋17からなる。岩盤浴装置10は、人11の脊柱S字カーブに倣った形態のS字形状を呈しているため、利用者の体圧が分散される。加えて、身体には小袋17が当たり、この小袋17が変形するため、なお一層の体圧分散が図れる。【選択図】図3
