PROBLEM TO BE SOLVED: To provide a heat-transpiring device, excellent in assembling property, capable of surely performing the illumination of a liquid bottle having translucency, excellent in visual recognizability of a medicinal liquid surface and further improving illumination effect.SOLUTION: This heat-transpiring device comprises a utensil body consisting of an upper utensil body equipped with a transpiring hole and a lower utensil body attached with a medicinal liquid bottle, a heat-generating body for transpiring the medicinal liquid elevating through a liquid-absorbing core, an illuminating means for illuminating the medicinal bottle and a switch for supplying and stopping electricity, by installing the illuminating means and the switch at a switch-attaching member, by supporting the switch-attaching member by the upper utensil body and lower utensil body so that an operating part of the switch is exposed outside between the joining part of the upper utensil body and the lower utensil body, and by installing the illuminating means as opposing to the light-transmitting hole installed at the bottom surface part of the lower utensil body.COPYRIGHT: (C)2010,JPO&INPIT【課題】組立性に優れ、透光性の液体ボトルの照明を確実に行うことができて、薬液面の視認性に優れ、さらに、イルミネーション効果が向上する加熱蒸散装置を提供する。【解決手段】蒸散孔を備えた上部器体と薬液ボトルが取付けられる下部器体とからなる器本体と、吸液芯を上昇する薬液を蒸散させる発熱体と、薬液ボトルを照らす照明手段と、給停電用スイッチとを備え、照明手段とスイッチとがスイッチ取付部材に設けられ、このスイッチ取付部材は、スイッチの操作部が上部器体と前記下部器体の接合部間で外部に露出するように、上部器体と下部器体によって支持され、照明手段は、下部器体の底面部に設けられた透光孔に対向して設けられる。【選択図】 図6