A portable cooling and heating device with a temperature distribution unit.

Abstract

The invention relates to a portable cold and heat device (10) for temperature control of a body part, comprising: - a holding device (12) - at least one thermoelectric element (141), preferably a Peltier element, - at least one fan (16), - a temperature distribution device (18), wherein the at least one thermoelectric module (14) and the at least one fan (16) are arranged in a temperature transfer area A of the holding device (12), wherein the temperature distribution device (18) has a bag and is arranged on an outside of the holding device (12) substantially in the temperature transfer area A, which faces the body part, wherein the bag encloses a heat-conducting liquid.

Description

[0001] The present invention relates to a portable cooling and heating device with a temperature distribution device for temperature control of a body part. State of the art

[0002] The application of cold and heat therapies to treat various illnesses and injuries is a well-established procedure in medical practice. For optimal effectiveness, it is crucial that the cold or heat source is placed close to the affected area. Thermoelectric modules with Peltier elements are a promising technology used in such therapies.

[0003] Peltier elements are electronic components capable of transferring heat from one side to the other, depending on the direction of the electric current flowing through them. They can function as both a cold and a heat source and are therefore used for cold and heat therapies. Although the use of Peltier elements for therapeutic purposes is well-established, their effective application presents a challenge. To achieve maximum therapeutic effect, the Peltier elements must be placed close to the area of ​​the body being treated. This ensures that the cold or heat is efficiently transferred to the tissue and the desired therapeutic effects are achieved.

[0004] In light of this challenge, there is a need for innovative solutions that allow Peltier elements to be positioned so that they lie close to the body part being treated. This ensures effective and comfortable application of cold and heat therapies, leading to improved treatment and faster patient recovery. Patent WO2022133209A1 describes a temperature-controlled wrapping arrangement. A first temperature control module comprises a housing, a controllable temperature element, a spreader element, and at least one first finger spreader that is pivotably attached to the spreader element. A lower surface of the spreader element is positioned so that it touches the user's body part.

[0005] However, there is always a need to make therapy belts more flexible and comfortable, while simultaneously maintaining direct contact between the area being treated and the thermoelectric module. Conventional therapy belts are often bulky and inflexible, which can lead to restricted freedom of movement and discomfort for the user.

[0006] The challenge lies in developing a device that combines the benefits of cold and heat therapy in a comfortable and flexible way. This requires that the heat energy be transferred directly to the affected area of ​​the body without interfering with contact through additional elements such as spreader fingers.

[0007] By creating a more flexible and comfortable therapy belt that allows for the direct transfer of heat energy to the area being treated, effective and comfortable treatment is ensured. This can help relieve pain, reduce inflammation, and promote recovery, while the user enjoys improved comfort and greater freedom of movement. Description of the invention

[0008] Starting from the known state of the art, it is an object of the present invention to provide an improved solution for a portable cold and heat device which increases the flexibility of the device for adapting to a body part to be treated and at the same time provides the most efficient heat transfer possible.

[0009] This problem is solved by a cooling and heating device with the features of claim 1. Advantageous embodiments are described in the dependent claims, the present description, and the figures. Accordingly, a portable cooling and heating device for temperature control of a body part is proposed, comprising a holding device and at least one thermoelectric module, preferably a Peltier element.

[0010] Furthermore, the portable cooling and heating device comprises at least one fan and a temperature distribution device. The at least one thermoelectric module and the at least one fan are arranged within a temperature transfer area of ​​the mounting device. wherein the temperature distribution device comprises a bag and is arranged on an outer side of the holding device, which faces the body part, substantially in the temperature transfer area A, wherein the bag encloses a heat-conducting liquid.

[0011] The temperature distribution device offers the advantage of a broad and even distribution of the thermoelectric element's heat energy to the area being treated. Designed as a pouch containing a heat-conducting fluid, the device ensures that the portable cooling and heating unit conforms better to the body. This allows for optimal adaptation of the device to the specific area, as the temperature distribution device is designed as a pouch filled with a heat-conducting fluid. This enables uniform and effective heat transfer from the device to the treated area, allowing for precise and efficient cooling and heating.Positioning the temperature distribution device on the body-facing outer side of the holding device ensures that the cold or heat from the thermoelectric modules is transferred more efficiently to the desired area of ​​the body, thus increasing comfort and treatment effectiveness. Furthermore, the use of a heat-conducting fluid allows for rapid temperature adjustment, which is particularly advantageous during alternating cold and heat cycles or when treatment requirements vary.

[0012] The holding device serves to keep the individual components, such as the thermoelectric modules, the air inlets and outlets, and the control unit of the portable cooling and heating device, in position. In one example, these components are glued or clamped to the holding device.

[0013] The temperature distribution device is detachably attached to the holding device. In one example, the bag can have a thickness of 1-15 mm in its initial state, preferably 4 mm.

[0014] For the purposes of this patent application, the pouch is a specially designed casing or bag that serves to contain a heat-conducting liquid and is in direct contact with the user's body area to enable efficient heat or cold transfer. The pouch forms the interface between the thermoelectric module and the user's skin, thereby ensuring uniform temperature distribution across the treated area. The function of the temperature distribution device, or pouch, is to securely contain the heat-conducting liquid and ensure an even distribution of temperature across the skin.

[0015] Cooling of the thermoelectric elements can be achieved by heat sinks, preferably heat sinks. A fan is used to increase airflow over a heat sink and improve cooling performance. The fan dissipates heat by blowing the surrounding air over the heat sink, thus aiding the cooling of the thermoelectric element. In one example, the fan is shown as an axial fan and is positioned on the thermoelectric module, specifically on a heat sink of the thermoelectric module. Accordingly, the fan is located on the side facing away from the body part.

[0016] The temperature transfer range A is defined by that of the thermoelectric modules.

[0017] The thermoelectric module has a thermoelectric element, preferably a Peltier element, in its front section. The front section is defined as the area facing a body part when the module is attached. In one example, the top surface of the thermoelectric element, preferably a Peltier element, is in direct contact with the body part. The top surface is defined as the side that is in contact with the body part and transfers the heat energy to the body part being treated.

[0018] The Peltier effect occurs when an electric current flows through the Peltier element. This creates a temperature difference on the two sides of the element. Heat is absorbed on one side, while heat is released on the other. This allows the generation of a temperature differential.

[0019] In addition to Peltier elements, alternative caloric materials such as magnetocaloric and electrocaloric materials can also be used. These materials utilize caloric effects to generate or dissipate heat energy. The magnetocaloric principle is based on the change in a material's magnetic properties under the influence of an external magnetic field. By applying or removing a magnetic field, the material can absorb or release heat. This effect allows for temperature control near the area of ​​the body being treated without affecting direct contact.

[0020] The electrocaloric principle, on the other hand, uses changes in electric field strength to generate temperature changes in a material. Applying or removing an electric voltage generates or dissipates heat energy.

[0021] The use of caloric materials as an alternative to Peltier elements allows for versatile adaptation and design of therapeutic devices. They offer the possibility of developing more compact and efficient devices in which heat energy can be transferred directly and precisely to the area of ​​the body being treated. This can improve wearing comfort and optimize therapeutic effects.

[0022] According to an advantageous embodiment of the invention, an outer shell of the bag may be made of a thermally conductive plastic.

[0023] The pouch is designed to be flexible yet robust enough to withstand the mechanical stresses of use. Ideally, the pouch is made of a thermally conductive material that facilitates heat transfer, such as a special plastic or a blend of plastics, while remaining soft enough to maximize comfort. This further improves heat transfer from the heat-conducting fluid to the skin, as the plastic not only conducts heat effectively but is also flexible enough to conform to the body's contours.

[0024] Additionally or alternatively, the temperature distribution device can also include a heat-conducting layer. Preferably, the heat-conducting layer is configured as a pyrolytic graphite layer (PGS) or a metal foil or metal grid (e.g., aluminum or copper). Preferably, the heat-conducting layer is enclosed by the heat-conducting liquid and the bag. In other words, the heat-conducting layer floats in the heat-conducting liquid. This further increases the heat conductivity of the temperature distribution device.

[0025] In another example, the bag is made from a combination of different plastic materials, where an inner layer surrounds the liquid and an outer layer provides protection against external environmental influences.

[0026] According to one embodiment, the heat-conducting fluid has a viscosity of 10-20000 mPas, preferably 1000-2000 mPas.

[0027] This ensures that the fluid remains evenly distributed within the pouch, even during gentle or vigorous device movements, thus maintaining its thermal conductivity at every point within the device's temperature transfer zone. This guarantees uniform and stable heat transfer to the skin, further optimizing the treatment effect. A viscosity in the range of 1000 mPas to 2000 mPas has proven particularly advantageous, as this range represents the best compromise between malleability and thermal conductivity. The suggested viscosity of the filling allows the pouch to be adjusted and selected to ensure the fluid is evenly distributed. In other words, the pouch behaves like modeling clay, conforming well to the specific application conditions and remaining in this deformed state, at least for the duration of the treatment.

[0028] Furthermore, according to an equally advantageous embodiment of the invention, the heat-conducting liquid may be a liquid metal, wherein the liquid metal comprises galium and / or indium and / or tin.

[0029] Conventional cold packs are filled with a water-based gel. However, water has a very high heat capacity and only moderate thermal conductivity, which slows down the thermal response. The proposed liquid metals are characterized by exceptionally high thermal conductivities, significantly increasing the efficiency of heat transfer. Using liquid metal allows the device to achieve very rapid and precise temperature changes, which is particularly beneficial in therapeutic applications. Furthermore, liquid metal offers high stability and durability, as it does not decompose or lose its conductivity even with frequent temperature changes.

[0030] Advantageously, the invention can also be further developed such that the heat-conducting fluid comprises a mixture of a liquid and a heat-conducting component. Preferably, the heat-conducting fluid comprises a mixture of a liquid component and a heat-conducting component, wherein the liquid component comprises a material selected from the following list: oil, silicone oil, grease, liquid metal, and / or the heat-conducting component comprises a material from the following list: aluminum oxide, copper oxide, zinc oxide, graphite.

[0031] This combination allows for the adjustment of thermal conductivity to specific requirements, with the liquid component ensuring the fluid's mobility and uniform distribution within the pouch, and the heat-conducting component optimizing heat transfer efficiency. The choice of materials for both the liquid and heat-conducting components allows for flexible device design to meet diverse therapeutic needs and maximize treatment outcomes.

[0032] According to a further preferred embodiment of the invention, it can be provided that the heat-conducting component is present in a weight ratio of 2:1 to 10:1 to the liquid component.

[0033] This ensures that the thermal conductivity of the mixture is optimally matched to the application requirements. Such a ratio enables efficient heat transfer without impairing the fluid's flow properties. As a result, the temperature distribution device remains flexible and adapts well to the body surface while simultaneously guaranteeing effective heat conduction.

[0034] Finally, the invention can also be advantageously implemented in such a way that the bag is designed in at least two chambers.

[0035] In a preferred example, the number of chambers in the bag corresponds to the number of thermoelectric modules.

[0036] This allows for better control over the distribution of the heat-conducting fluid within the temperature distribution device, resulting in a more even temperature distribution on the skin. The chamber structure also prevents the fluid from shifting uncontrollably when the device is moved, improving the stability and efficiency of the temperature transfer. This achieves a more consistent and targeted cold or heat therapy effect.

[0037] According to a further embodiment, the portable cooling and heating device has fastening devices which can be connected to a rear side of at least one thermoelectric module and / or at least one air outlet and / or a control device by a form-fit and / or force-fit connection, in particular a Snap&Click connection, or a magnetic connection.

[0038] These fastening devices, implemented through positive and / or non-positive connections, particularly snap & click or magnetic connections, enable quick and easy assembly of the portable cold and heat device. This facilitates the individual adaptation of the portable device to specific applications on different parts of the body. As a result, the overall handling of the device becomes more flexible and user-friendly. In particular, the portable device can be pressed more firmly against the area of ​​treatment using fastening loops or tabs attached to the fastening devices. In other words, the fastening devices can be flexibly attached to the components of the portable device, ensuring that the device can be optimally wrapped around the body area.The mounting device is designed with a frame structure whose size and outer contour correspond to the size and outer contour of the air inlets or air outlets of the thermoelectric modules. This frame structure ensures that the mounting device fits precisely and securely onto the corresponding areas of the air inlets and / or outlets. With a snap-and-click connection, the mounting device snaps into pre-made recesses, creating a stable and releasable connection. Magnetic connections, on the other hand, offer the advantage of tool-free handling and enable a simple yet secure connection of the parts.

[0039] Regarding the design of the fastening devices, these can be made of resistant materials such as reinforced plastic or lightweight metal to ensure the necessary stability and durability and to optimally fulfill their therapeutic function.

[0040] According to a further embodiment, the mounting device comprises, at least in the temperature transfer area A, a first fabric element and a second fabric element, wherein the first fabric element is arranged between the thermoelectric modules. The first fabric element ensures an elongation of 50%–500% compared to the initial state.

[0041] This high elasticity allows the device to adapt optimally to different body parts and shapes, thus improving wearing comfort. Furthermore, the stretchable first fabric element helps ensure that the device remains securely in place even when the user moves, without affecting the heat transfer area. This is particularly advantageous during extended use where consistent heat transfer is required.

[0042] According to another embodiment, the first fabric element comprises a material with elastane, and the second fabric element comprises synthetic leather. The elastane provides the necessary flexibility and elasticity to optimally adapt the device to the user's body, while the synthetic leather offers a robust yet flexible outer surface that is both comfortable against the skin and ensures increased resistance to external influences. This combination of materials enables durable and comfortable use of the device while maintaining efficient heat transfer.

[0043] The proposed portable heating and cooling device is characterized by a temperature distribution device that spreads the heat or cold generated by the thermoelectric elements over a larger area to ensure uniform temperature control of the affected body region. The temperature distribution device is preferably designed as a pouch attached to the outside of the device, facing directly towards the body area. This pouch contains a thermally conductive fluid that ensures the temperature is distributed homogeneously across the entire contact surface. The use of a thermally conductive fluid allows the heat generated by the thermoelectric module to be effectively transported and rapidly transferred to the skin surface. The pouch itself is preferably made of a thermally conductive material to optimize heat transfer from the fluid to the skin.

[0044] The function of the temperature distribution device is to spread the localized heat source of the thermoelectric module over a larger area, thus enabling even and controlled temperature distribution across the skin. This is particularly important to avoid hot spots and ensure a comfortable and safe application of cold or heat therapy.

[0045] Regarding the design of the temperature distribution device, the pouch can be configured as a single- or multi-chamber system. A multi-chamber design offers the advantage of holding the heat-conducting fluid in different areas of the device and distributing it more evenly, thus further optimizing heat transfer. The materials used for the pouch's outer shell can consist of thermally conductive plastic or other suitable materials that exhibit high thermal conductivity while remaining flexible and robust enough to conform to the contours of the body and withstand the stresses of use.

[0046] Furthermore, flexible fastening devices are provided that can be attached to the components (such as air inlets and air outlets) of the portable device, so that fastening loops or tabs can be attached to them and ensure that the portable device can be optimally wrapped around the body part.

[0047] Overall, the portable cold and heat device is designed to enable optimal heat or cold transfer to the body area, maximizing treatment effectiveness while also providing a high level of wearing comfort. Brief description of the characters

[0048] Preferred further embodiments of the invention are explained in more detail by the following description of the figures. These show: Fig. 1A-E a schematic view of the front and back as well as a side view and sectional view of the portable cooling and heating device according to one embodiment; Fig. 2A-B a schematic view of a fastening device and an air outlet of the portable cooling and heating device according to one embodiment; Fig. 3A-B a schematic view of a fastening device and an air outlet of the portable cooling and heating device, as well as a sectional view in the installed state according to one embodiment; and Fig. 4A-C a schematic view of a temperature distribution device, in particular a bag, with one chamber and several chambers and with a heat-conducting layer according to one embodiment. Figure description / Examples of execution

[0049] Preferred embodiments are described below with reference to the figures. Identical, similar, or equivalent elements in the different figures are designated with identical reference numerals, and repeated descriptions of these elements are sometimes omitted to avoid redundancy. Furthermore, identical components of the device are not designated with a reference numeral multiple times in the same drawing to improve clarity.

[0050] Fig. 1A shows a reverse side and Fig. 1B a front face of a portable cold and heat device 10 for temperature control of a body part, wherein Fig. Figure 1C shows the front of the portable cooling and heating device without the temperature distribution device. Fig. Figure 1D shows the portable cooling and heating device in a side view and Fig. 1E shows the portable cooling and heating device in a sectional view of the in Fig. Portable device shown in 1C.

[0051] The figures therefore show a portable cooling and heating device, a holding device 12 and at least one thermoelectric module 14 comprising at least one thermoelectric element 141 (see Fig. 1C), preferably a Peltier element. Furthermore, the portable cooling and heating device comprises at least one fan 16 and a temperature distribution device 18, wherein the at least one thermoelectric module 14 and the at least one fan 16 are arranged in a temperature transfer area A of the holding device 12 and are connected to the holding device 12. The temperature distribution device 18 comprises a bag (see, for example, Figure 1). Fig. 1B and Fig. 1D) which is arranged on an outer side of the holding device (12) which is facing the body part, substantially in the temperature transfer area A, wherein the bag encloses a heat-conducting liquid.

[0052] As in the Fig. Figure 1A-1 E shows the portable cold and heat device equipped with several thermoelectric modules 14 (for clarity, not every module is labelled). The device can be designed to be wrapped around a part of the body.

[0053] The holding device 12 has an elongated, rounded shape, preferably designed as a belt. Several thermoelectric modules 14 are arranged in the center of the holding device 12. These modules are placed in a matrix arrangement along the length of the device, which defines the temperature transfer area A.

[0054] In an example and as in Fig. Figure 1E shows an example of the thermoelectric module 14 comprising a thermoelectric element 141 and a heat sink 142. The fan 16, preferably an axial fan, is arranged on the heat sink 142 and draws in the airflow via an air inlet 17.

[0055] As further exemplified in Fig. As shown in Figure 1A, the holding device comprises, at least in the temperature transfer area A, a first fabric element 28 and a second fabric element 30, wherein the first fabric element 28 is arranged between the thermoelectric modules. The first fabric element is positioned between the thermoelectric modules 14 such that it covers the space between the thermoelectric modules. This also creates a boundary between the first fabric element and the second fabric element, as the first fabric element is distinguished from the second fabric element by its cross-shaped form. The first fabric element 28 allows for an elongation of 50% to 500% compared to its initial state.

[0056] In one example, the first fabric element 28 has a fabric with elastane weave and the second fabric element 30 has an artificial leather.

[0057] The elastane provides the necessary flexibility and stretch to optimally adapt the device to the user's body, while the synthetic leather offers a robust yet flexible outer surface that is both comfortable against the skin and ensures increased resistance to external influences. This combination of materials allows for long-lasting and comfortable use of the device, while simultaneously maintaining efficient heat transfer.

[0058] Furthermore, the device 10 features as shown in Fig. Figure 1A shows an exemplary control device 24 to control the device 10 or to control and supply power to the device 10 with regard to various parameters such as temperature ranges, number and duration of cold and heat cycles and duration of therapy.

[0059] Furthermore, the retaining device 12 has a fastening area 26 for securing the retaining device 12 after it has been tied or wrapped around a part of the body (not shown). The fastening area 26 may, for example, have a hook and loop fastener.

[0060] As in Fig. 1E continues in a sectional view of Fig. As shown in Figure 1C, the thermoelectric modules 14 have an air inlet 17 for a fan 16 to cool the thermoelectric element 141. At least one air outlet 20 is arranged separately from the thermoelectric module 14 and the fan 16 on the mounting device.

[0061] As in Fig. As shown by way of example in Figure 1E, the respective thermoelectric module 14 is arranged with a respective axial fan 16 in a respective common housing.

[0062] In the example shown here, the airflow is schematically indicated by arrows and flows from the thermoelectric module 14 to the respective air outlet 20. The respective axial fan 16 is configured to draw in the air via the air inlet 17 and transport it through the thermoelectric module 14 to the respective air outlet 20.

[0063] In an example not shown here, the axial fan can be configured such that the airflow is reversed. That is, air is drawn in through the air outlets 20, which then function as air inlets, transported through the thermoelectric module, and expelled from the holding device through the air inlets 17, which then function as air outlets.

[0064] Fig. Figure 1D shows the device in a side view. As shown here, the bag 18 is fastened by means of fasteners 23, preferably loops or tabs, and fastening devices 22 (see also Figure 1D). Fig. 1A), connected to the holding device 12. This allows the bag 18 to be connected to the portable cold and heat device 10 in an improved manner.

[0065] Fig. Figure 2A shows a detailed schematic view of the fastening device 22 according to an embodiment, which is mounted, for example, on an air outlet 20 (see Figure 2). Fig. 2B) of the thermoelectric module 14 can be applied.

[0066] The structure of the fastening device 22 has a rectangular frame structure 22A, the size and outer contour of which are adapted to the components to be connected, thermoelectric modules 14 or air outlets 20 or the control device 24 (see Fig. 1A), is adapted. In the center of the frame structure 22A, a rectangular cutout is visible, which is surrounded by a reinforced border. On one side of the cutout is an additional structure that serves to attach or stabilize the fastening device.

[0067] The frame structure 22A also has two elongated 22B, 22C, parallel openings extending along the long side of the rectangle. These openings are provided for threading fasteners 23, such as loops, straps, or tabs, to securely fix the entire device to a part of the body.

[0068] Fig. Figure 3A shows in an example a schematic top view of the fastening device 22 in the installed state on an air outlet 20.

[0069] Fig. Figure 3B shows a sectional view of the fastening device 22. The fastening device 22 has, for example, a projection 22D which engages with a notch of a cover or air inlet of a thermoelectric module 14 or an air outlet 20.

[0070] Finally, it shows Fig. 4B, that the bag can be designed with at least two chambers, for example 3 chambers. Fig. Figure 4A shows an embodiment with a single chamber. Additionally or alternatively, the temperature distribution device 18 can be arranged as shown in Fig. 4C also has a heat-conducting layer 19

[0071] The invention is not limited to the embodiments illustrated in the figures. The foregoing description is therefore not to be considered limiting, but rather explanatory. The following claims are to be understood as meaning that a named feature is present in at least one embodiment of the invention. This does not preclude the presence of further features. Insofar as the claims and the foregoing description define 'first' and 'second' features, this designation serves to distinguish between two similar features without establishing any hierarchy. Reference symbol list 10 portable cooling and heating devices 12 Holding device 14 thermoelectric module 16 fans 18 Temperature distribution device 20 air outlets 22 Fastening device 23 Fasteners 24 Control device 26 Mounting area 28 first tissue element 30 second tissue element 141 thermoelectric element 142 Heat sink QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] WO 2022133209A1

[0004]

Claims

[1] A portable cold and heat device (10) for temperature control of a body part, comprising: - a holding device (12) - comprising at least one thermoelectric module (14) comprising at least one thermoelectric element, preferably a Peltier element, - at least one fan (16), - a temperature distribution device (18), wherein the at least one thermoelectric module (14) and the at least one fan (16) are arranged in a temperature transfer area A of the holding device (12), characterized by , that the temperature distribution device (18) has a bag and is arranged on an outside of the holding device (12) which faces the body part, substantially in the temperature transfer area A, wherein the bag encloses a heat-conducting liquid. [2] Portable cooling and heating device (10) according to claim 1, characterized by, that an outer shell of the bag is made of a thermally conductive plastic; and / or the temperature distribution device (18) has a thermally conductive layer (19). [3] Portable cooling and heating device (10) according to claim 1 or claim 2, characterized by that the heat-conducting fluid has a viscosity of 10-20,000 mPas, preferably 1000-2000 mPas. [4] Portable cooling and heating device (10) according to any one of claims 1 to 3, characterized by that the heat-conducting fluid is a liquid metal, wherein the liquid metal contains galium and / or indium and / or tin. [5] Portable cooling and heating device (10) according to any one of claims 1 to 4, characterized by, that the thermally conductive fluid comprises a mixture of a liquid component and a thermally conductive component, wherein the liquid component comprises a material selected from the following list: oil, silicone oil, grease, liquid metal, and / or the thermally conductive component comprises a material from the following list: aluminum oxide, copper oxide, zinc oxide, graphite. [6] Portable cooling and heating device (10) according to claim 5, characterized by , that the heat-conducting component is present in a weight ratio of 2:1 to 10:1 to the liquid component. [7] Portable cooling and heating device (10) according to any one of the preceding claims, characterized by that the bag is designed as one or more chambers. [8] Portable cooling and heating device (10) according to one of the preceding claims, further comprising fastening devices (22) which can be connected to a rear side of at least one thermoelectric module (14) and / or at least one fan outlet (20) and / or the control device (24) by a form-fit and / or force-fit connection, in particular a Snap&Click connection, or a magnetic connection. [9] Portable cooling and heating device (10) according to one of the preceding claims, wherein the mounting device (12) has at least in the temperature transfer area A a first fabric element (28) and a second fabric element (30), wherein the first fabric element (28) is arranged between the thermoelectric modules; wherein the first fabric element (28) ensures an elongation of 50% - 500% compared to the initial state. [10] Portable cold and heat device (10) according to claim 9, wherein the first fabric element (28) comprises a fabric containing elastane and the second fabric element (28) comprises an artificial leather.

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