1. A device for lowering the temperature for objects or flexible products of a flat shape, which are in direct thermal contact with the body of a living creature, and the phase-changing material (PCM) and a heat exchanger and the functionality of the object are at least partially integrated into the object or flexible product of a flat shape retained, with the phase-changing material in heat transfer contact with the heat exchanger. 2. The apparatus of claim 1, wherein the heat exchanger passes a medium by which the temperature of the phase changing material is kept below and / or in the melting range. A device according to claim 1 or 2, wherein the phase-changing material is present in the form of modules containing the phase-changing material and / or consists of a bed of particles containing the phase-changing material. A device according to claim 1, wherein the phase change material preferably consists of paraffin, salt hydrate and modifications thereof, for example in the form of compounds. A device according to claim 4, wherein the compound is in the form of a hose or, respectively, filled with phase-changing material in sachets. A device according to claim 1, wherein the phase-changing material or modifications thereof are embedded in a carrier structure, for example a suction fiber structure. The device according to claim 1, in which the heat exchanger is made in the form of a hollow space through which the flow of the cooling medium passes. The device according to claim 1, wherein the heat exchanger operates as an open system. The device according to claim 1, wherein ambient air is used as the heat exchanger medium. A device according to claim 1, wherein the flexible flat-shaped article is a multilayer article1. Устройство для снижения температуры для предметов или гибких изделий плоской формы, которые находятся в непосредственном тепловом контакте с телом живого существа, причем в предмет или гибкое изделие плоской формы по меньшей мере частично интегриров