The present invention relates to a fire extinguisher, and is intended to safeguard disaster prevention personnel and the like by a cool air circulation in the event of an emergency disaster such as a fire or an earthquake. In order to achieve the above object, the present invention provides a heat-dissipating apparatus, comprising: a body of heat dissipating apparatus which is formed of a dual structure of an outer shell and an inner shell to form a tubular enclosed space capable of expanding or contracting in volume through gas supply between the shells of the double structure; The compressed gas to be supplied through the gas introduction pipe dispersed in each part of the closed space is filled in the gas capsule so as to be interrupted by the control valve and the control valve is opened and closed by the lever operation by the user or the valve opening / A gas supply part for discharging or shutting off the gas into the tubular enclosed space through the gas introduction pipe, and at least one temperature sensor installed on the inner surface of the heat radiation device main body to detect the temperature of the user's body, A valve opening / closing signal for opening / And a capsule control unit for controlling the operation of the supply unit so as to provide a fire extinguishing unit for a fire extinguisher. When an emergency disaster such as a fire or an earthquake occurs, Provides cold air supply and circulation to safeguard disaster emergency personnel from external thermal shocks.
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