Contact type cooling and heating instrument

Abstract

The invention discloses a contact type cold and hot instrument, and relates to the technical field of temperature control devices, the contact type cold and hot instrument comprises a cambered surface contact element, a controllable temperature element, a temperature conduction element and a power supply, the cambered surface contact element is used for replacing an existing flat plate or approximate flat plate type temperature conduction sheet body, and the cambered surface contact element is in contact with a user through the cambered surface of the cambered surface contact element; the contact surfaces of the cambered surface contact elements can be in better contact with narrow parts such as joints, necks or armpits, and the application range is wider; meanwhile, the cambered surface contact element can rotate in the shell, so that the contacted cambered surface can rotate into the shell, and when the cambered surface of the cambered surface contact element rotates, the contact surface can rotate into the shell, so that cold or heat in the shell can be quickly transferred to a human body; the rapid switching of the contact surfaces can effectively increase the conduction speed of the temperature, so that a user can obtain better experience.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature control devices, and in particular relates to a contact type hot and cold instrument. Background Art

[0002] With the development of economy and the improvement of people's living standard, heat therapy and cold therapy are increasingly used in physical therapy or surgical treatment. Therefore, various devices have been designed to achieve the desired heat or cold transfer. However, most of the existing various cooling and heating devices for cooling or heating use temperature control sheets (such as Peltier) for cooling and heating, and then use the temperature conduction sheet to contact the human body to achieve physical therapy, such as the invention patent with authorization announcement number CN 209629949 U and the invention patent with patent number US11940163 B1. The temperature conduction sheets disclosed in the above two prior arts are both flat or nearly flat.

[0003] However, the area of ​​the flat or nearly flat temperature conduction sheet in contact with the human body is a fixed-size plane, and cannot fit into a large area of ​​some narrow locations, such as the neck, armpits, joints, etc.; and, the flat or nearly flat temperature conduction sheet has a fixed contact surface during use, and cannot achieve rapid switching of the contact surface, thereby failing to achieve rapid conduction of cold or heat. Summary of the invention

[0004] In order to solve the problem that the prior art cannot be applied to narrow places and the contact surface cannot be quickly switched, the present invention aims to provide a contact hot and cold instrument.

[0005] The technical solution adopted by the present invention is:

[0006] A contact hot and cold instrument comprises an arc-surface contact element for contacting a human body and conducting heat or cold; a controllable temperature element for generating heat or cold; a temperature conducting element for mounting the arc-surface contact element and conducting the temperature of the controllable temperature element to the arc-surface contact element; a power supply for supplying energy to the controllable temperature element; and a shell for mounting the power supply, the controllable temperature element and the temperature conducting element; part of the surface of the arc-surface contact element is exposed outside the shell to form a contact surface with a user, and the arc-surface contact element can be rotatably mounted inside the temperature conducting element, and the arc-surface contact element can be rotated to quickly switch the temperature of the contact surface.

[0007] Optionally, the arc-surface contact element is spherical.

[0008] Optionally, the temperature conduction element includes a cover body, a support seat and a base plate; the cover body is detachably mounted on the support seat, the support seat is located on the base plate, and the base plate is mounted on the controllable temperature element; a spherical cavity is provided between the cover body and the support seat, the arc surface contact element is covered by the cover body in the support seat, and part of the arc surface contact element protrudes out of the cover body.

[0009] Optionally, the arc surface contact element is cylindrical or elliptical.

[0010] Optionally, a heat dissipation component is also provided in the shell.

[0011] Optionally, the heat dissipation component includes a radiator and a fan; the controllable temperature element is arranged between the radiator and the temperature conduction element; the fan is used to guide the air to circulate quickly in the radiator; and an air circulation structure is opened on the shell.

[0012] Optionally, two opposite sides of the shell are respectively provided with a handle and an auxiliary lifting buckle; the arc contact element is located on the bottom surface of the shell, and a top cover is provided on the top surface of the shell; the power supply is arranged in the handle; and the air circulation structure on the shell includes ventilation holes opened on the remaining sides.

[0013] Optionally, a PCB board is provided in the inner cavity of the shell, the PCB board is electrically connected to the fan and the controllable temperature element, and a plurality of control buttons are provided on the PCB board, and the plurality of control buttons protrude outward from the top cover.

[0014] As an option, the temperature conduction element is mounted on the first bracket, and the controllable temperature element is mounted in the housing through the first bracket and the second bracket.

[0015] Optionally, a radiator and a fan are arranged between the first bracket and the second bracket, and the controllable temperature element is installed between the radiator and the temperature conduction element.

[0016] The beneficial effects of the present invention are:

[0017] The present invention provides a contact type cold and hot instrument. By using an arc surface contact element to replace an existing flat plate or nearly flat temperature conduction sheet, the arc surface contact element contacts the user through its arc surface. The contact surface of the arc surface contact element can better contact with narrow parts such as joints, neck or armpits, and has a wider range of applications. At the same time, the arc surface contact element can rotate in a shell, so that the contact arc surface can be rotated into the shell. When the arc surface of the arc surface contact element rotates, the contact surface can be rotated into the shell, so that the cold or heat in the shell can be quickly transferred to the human body. The rapid switching of the contact surface can effectively increase the temperature conduction speed, so that the user has a better experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural diagram of embodiment 1.

[0019] Figure 2 It is a schematic diagram of the installation positions of the temperature conduction element, the fan and the radiator in the first embodiment.

[0020] Figure 3 It is a schematic diagram of the internal structure of the first embodiment.

[0021] Figure 4 It is a structural schematic diagram of the temperature conduction element.

[0022] Figure 5 It is a cross-sectional schematic diagram of a temperature conducting element.

[0023] Figure 6 This is a schematic diagram of the fan installation location.

[0024] Figure 7 Schematic diagram of the structure of the first bracket.

[0025] Figure 8 It is a schematic diagram of the structure of the fan and the second bracket.

[0026] Fig. 9 This is a schematic diagram of the location of the PCB board.

[0027] Fig.10 It is a schematic diagram of the structure of the top cover.

[0028] Fig.11 It is a schematic diagram of the structure of the shell, and the top cover has been omitted.

[0029] Fig.12 It is a schematic side view of the housing with the top cover omitted.

[0030] Fig.13 yes Fig.12 Schematic cross-sectional view of AA.

[0031] In the figure: 100-shell, 101-top cover, 1011-elastic card, 1012-grid hole, 102-ventilation hole, 103-wedge-shaped card, 104-auxiliary lifting buckle, 105-first support column, 106-center hole, 110-handle, 111-anti-slip protrusion, 112-battery, 2-arc contact element, 3-temperature conduction element, 31-cover, 32-support seat, 33-floor, 331-first through hole, 4-heat conductive sheet, 5-first bracket, 51-second support column, 52-third support column, 53-fourth support column, 6-radiator, 7-fan, 701-second through hole, 71-second bracket, 711-fifth support column, 712-sixth support column, 713-seventh support column, 8-PCB board, 81-third through hole, 82-control button. DETAILED DESCRIPTION

[0032] The following description further describes the specific details of the technical solution of the present invention in conjunction with the accompanying drawings, and the description is illustrative and should not be construed as limiting the technical solution of the present invention.

[0033] Embodiment 1:

[0034] like Figures 1 to 13 A contact hot and cold instrument is shown, which includes an arc surface contact element 2 for contacting the human body and conducting heat or cold, a controllable temperature element 4 for generating heat or cold, and a temperature conduction element 3 for installing the arc surface contact element 2 and conducting the temperature of the controllable temperature element 4 to the arc surface contact element 2; the controllable temperature element 4 is powered by a power supply 112; the power supply 112, the controllable temperature element 4 and the temperature conduction element 3 are all installed in a shell 100; part of the surface of the arc surface contact element 2 is exposed outside the shell 100 to form a contact surface with the user, and the arc surface contact element 2 can be rotatably installed in the temperature conduction element 3, and the arc surface contact element 2 can quickly switch the temperature of the contact surface by rotating.

[0035] By using the arc surface contact element 2 to replace the existing flat or nearly flat temperature conduction sheet, the arc surface contact element 2 contacts the user through its arc surface, and the contact surface of the arc surface contact element 2 can better contact with narrow parts such as joints, necks or armpits, and has a wider range of applications; at the same time, the arc surface contact element 2 can rotate in the shell 100, so that the contact arc surface can be rotated into the shell 100. For example, when the present invention is used as a refrigerator, the controllable temperature element 4 generates cold energy, and the temperature conduction element 3 transfers the cold energy to the arc surface. The surface contact element 2 makes the surface of the arc surface contact element 2 in the shell 100 that contacts the temperature conduction element 3 a cold surface, and its temperature is lower than the contact surface (hot surface). After the coldness of the contact surface contacts the human body, the coldness of the contact surface will be quickly absorbed by the human body. When the arc surface of the arc surface contact element 2 rotates, the hot surface can be rotated into the shell 100, thereby realizing rapid cooling of the contact surface, making the hot surface quickly become a cold surface, and the cold surface previously located in the shell 100 rotates to the outside to become a contact surface, and continues to contact the human body to achieve cooling of the human body. The switching between the cold surface and the hot surface can effectively increase the temperature conduction speed, so that the user can get a better experience.

[0036] In this embodiment, the arc surface contact element 2 is spherical, and the spherical arc surface contact element 2 can roll freely on the temperature conduction element 3. At the same time, the surface in contact with the human body can also roll freely, so that while transferring heat or cold, it can also form a rolling massage effect on the human body, which brings a better experience to the user than the existing temperature conduction sheet.

[0037] like Figure 1 , Figure 2 and Fig.11 As shown, a center hole 106 is provided on the bottom surface of the shell 100, and the arc surface contact element 2 is located in the temperature conduction element 3. The temperature conduction element 3 includes a cover body 31, a support seat 32 and a bottom plate 33; the cover body 31 is detachably mounted on the support seat 32, and the support seat 32 is used to mount one end of the arc surface contact element 2 through the center hole 106, the bottom plate 33 is located in the inner cavity of the shell 100, the support seat 32 is located on the bottom plate 33, and the bottom plate 33 is on the first bracket 5. There is a spherical cavity between the cover body 31 and the support seat 32, and the arc surface contact element 2 is covered by the cover body 31 in the support seat 32, and the arc surface contact element 2 partially protrudes out of the cover body 31.

[0038] In the present embodiment, the housing 100 may be formed of a plastic material, such as one or more adhesive layers of one or more of polyester (polyether), polyethylene, polypropylene, nylon, Kevlar fiber, Nomex fiber, polyacrylonitrile, cellulose, polyurethane, polycarbonate and acrylonitrile-butadiene-styrene terpolymer, or similar foams or fibers. However, the material of the housing 100 is not limited to those listed above, and the housing 100 formed of any non-metallic material, metal or wood, etc. should fall within the scope of protection of the present invention.

[0039] In this embodiment, the cover body 31 and the support seat 32 are screwed together through a spiral structure, so that the tightness of the arc surface contact element 2 on the support seat 32 can be adjusted; when the cover body 31 is loosened, the arc surface contact element 2 can rotate quickly, so that when the present invention is in use, the arc surface contact element 2 will also rotate when sliding over human skin. In addition to increasing the switching of the cold side and the hot side of the arc surface contact element 2, a massage effect can also be formed, which can bring the user a better user experience; the cover body 31 can also be tightened to press the arc surface contact element 2 on the support seat 32, so that the arc surface contact element 2 cannot be easily rotated.

[0040] In this embodiment, the controllable temperature element 4 is a Peltier, which uses the Peltier effect to generate heat flux at the junction of two different types of materials and transfer heat from one side of the device to the other side. After the Peltier is connected to the current to form a closed loop, it will generate heat and cold on its two different surfaces respectively, and when the polarity of the connected current changes, the surface on which it generates heat and cold will change.

[0041] In simple terms, when used as a refrigerator, the side of the controllable temperature element 4 in contact with the temperature conduction element 3 is a cold side for generating cold energy; on the contrary, the side of the controllable temperature element 4 away from the temperature conduction element 3 generates heat and is a hot side. After the positive and negative poles connected to the controllable temperature element 4 are changed, when used as a heater, the side of the controllable temperature element 4 in contact with the temperature conduction element 3 is a hot side for generating heat; on the contrary, the side of the controllable temperature element 4 away from the temperature conduction element 3 generates cold energy and is a cold side.

[0042] Of course, Peltier is only a preferred semiconductor cooling / heating element, and the controllable temperature element 4 can also be a solid-state refrigerator or a thermoelectric cooler (TEC), etc.

[0043] In this embodiment, the controllable temperature element 4 requires a heat dissipation component to absorb the heat from the side thereof away from the temperature conducting element 3 .

[0044] In this embodiment, the heat dissipation component is a combination of a heat sink 6 and a fan 7 .

[0045] Preferably, the heat sink 6 is in the form of a fin heat sink.

[0046] like Figure 3 As shown, the radiator 6 is arranged between the controllable temperature element 4 and the fan 7. The bottom surface of the radiator 6 exchanges heat with the bottom plate 33. Several fins of the radiator 6 face the fan 7. When the fan 7 rotates, it drives the air to flow quickly through the gaps between the fins of the radiator 6, thereby quickly reducing the temperature of the radiator 6.

[0047] Preferably, the heat sink 6, the temperature conduction element 3 and the arc surface contact element 2 are all made of materials with excellent thermal conductivity, such as metals or metal alloys such as aluminum and copper, or non-metallic materials such as ceramics that can help transfer heat or cold.

[0048] In this embodiment, if Figures 9 to 13 As shown, two opposite sides of the housing 100 are provided with a handle 110 and an auxiliary lifting buckle 104 respectively; the arc contact element 2 is located on the bottom surface of the housing 100, and the top surface of the housing 100 is provided with a top cover 101; the air circulation structure on the housing 100 includes ventilation holes 102 opened on the other sides and a plurality of grid holes 1012 set on the top cover 101. The four top corners of the top cover 101 are provided with elastic cards 1011, and the elastic cards 1011 are provided with a snap-in groove (such as Fig. 9 and Fig.10 As shown), a wedge-shaped card 103 is provided at a corresponding position of the inner cavity side wall of the shell 100. When the top cover 101 is installed on the shell 100, the wedge-shaped card 103 is snapped into the snap-in groove of the elastic card 1011.

[0049] Preferably, grid holes 1012 may also be provided on the side wall of the top cover 101 .

[0050] In the prior art, users hold the side wall of the housing 100 directly with their hands, which easily causes the fingers to cover the ventilation holes 102 and the palms to cover the grid holes 1012, which is not conducive to the air circulation of the housing 100, thereby affecting the cooling effect of the controllable temperature element 4 (such as the invention patent with the authorization announcement number CN 209629949 U and the invention patent with the patent number US11940163 B1). In this embodiment, a handle 110 is provided on one side of the housing 100. When in use, the user holds the handle 110 to avoid the user from blocking the air circulation structure on the housing 100; at the same time, the battery 112 of the present invention is arranged in the handle 110, which can effectively prevent the heat generated by the power supply 112 when working from affecting the cooling effect, thereby ensuring the best heat dissipation effect of the controllable temperature element 4.

[0051] In this embodiment, a PCB board 8 is disposed in the inner cavity of the housing 100 . The PCB board 8 is electrically connected to the fan 7 . A plurality of control buttons 82 are disposed on the PCB board 8 . The plurality of control buttons 82 protrude outward from the top cover 101 .

[0052] In this embodiment, a first bracket 5 and a second bracket 71 are further provided for fixing the temperature conducting element 3 , the heat sink 6 and the fan 7 .

[0053] Specifically, the base plate 33 is installed on the first bracket 5, and a plurality of first support columns 105 are arranged on the bottom surface of the shell 100. A second support column 51 is arranged on the first bracket 5. Both the first support column 105 and the second support column 51 are provided with threaded through holes, and the second support column 51 is connected to the first support column 105 by screws passing through the second support column 51, thereby installing the first bracket 5 in the shell 100.

[0054] In this embodiment, if Figures 6 to 8 As shown, the first bracket 5 is a square frame, and the two side surfaces, the top surface and the bottom surface of the square frame facing the ventilation hole 102 are hollowed out so that air can flow through the ventilation hole 102 and the radiator 6 normally.

[0055] In this embodiment, a plurality of third support columns 52 are further provided on the first bracket 5, a plurality of first through holes 331 are opened on the bottom plate 33, the third support columns 52 are respectively correspondingly snapped into the first through holes 331, threaded holes are opened on the third support columns 52, and screws are connected to the third support columns 52 in the first through holes 331, thereby locking the bottom plate 33 on the third support columns 52.

[0056] In this embodiment, the heat conducting sheet 4 is located in the hollow of the bottom surface of the first bracket 5 , and is pressed against the bottom surface of the heat sink 6 by the bottom plate 33 .

[0057] In this embodiment, a fourth support column 53 is further provided on the top surface of the first bracket 5, and a plurality of fifth support columns 711 and a sixth support column 712 are provided on the bottom surface of the second bracket 71. Second through holes 701 are provided at the four top corners of the fan 7, and the fifth support column 711 is clamped in the second through holes 701, and a threaded hole is provided on the fifth support column 711, which is connected to the fifth support column 711 by screws, so that the fan 7 is locked on the second bracket 71. The sixth support column 712 is clamped and connected to the fourth support column 53.

[0058] The heat sink 6 and the fan 7 are installed between the first bracket 5 and the second bracket 71 , and the heat sink 6 is restricted by the first bracket 5 to the bottom surface of the fan 7 .

[0059] In this embodiment, a plurality of seventh support columns 713 are provided on the top surface of the second bracket 71, a plurality of third through holes 81 are provided on the PCB board 8, and a threaded hole is provided on the seventh support column 713. The PCB board 8 can be locked on the top surface of the second bracket 71 by passing screws through the third through holes 81.

[0060] The PCB board 8 should also include structures such as indicator lights, and the control button 82 on the PCB board 8 should at least include a switch button for turning on or off the controllable temperature element 4.

[0061] Preferably, the control button 82 should also include an adjustment button for adjusting the temperature of the controllable temperature element 4 and a switching button for cooling and heating modes.

[0062] When the controllable temperature element 4 is used as a refrigerator, the side of the controllable temperature element 4 in contact with the temperature conduction element 3 is the cold side, and the side of the controllable temperature element 4 away from the temperature conduction element 3 is the hot side. The hot side of the controllable temperature element 4 needs to be heat-dissipated to ensure that the heat generated by the controllable temperature element 4 flows out of the shell 100. Therefore, the several control buttons 82 should also include a button for controlling the radiator 6 to open and close.

[0063] In this embodiment, the button for controlling the radiator 6 to be turned on and off specifically controls the connection and disconnection between the fan 7 and the power source 112 , thereby controlling the fan 7 to be turned on and off.

[0064] Of course, in order to adjust the heat dissipation efficiency, at least one button for adjusting the rotation speed of the fan 7 can be provided among the plurality of control buttons 82 .

[0065] Of course, the control button 82 is not limited to the button form that is pressed and then rebounds, and a knob or other switch form may also be used.

[0066] The indicator light on the PCB board 8 includes at least one LED light to indicate that the controllable temperature element 4 is turned on. The indicator lights can be visually distinguished from each other by icons or colors. For example, red indicates a heating mode, and blue indicates a cooling mode.

[0067] In this embodiment, the power source 112 is a rechargeable mobile power source, such as a rechargeable battery.

[0068] It should be noted that the bottom surface, top surface and other directions described in this embodiment are all based on Figure 1 direction as a reference, for example, Figure 1 In the embodiment, the arc surface contact element 2 is located at the bottom of the temperature conduction element 3 .

[0069] Embodiment 2:

[0070] In this embodiment, the arc surface contact element 2 is cylindrical, the structure of the temperature conduction element 3 needs to be adaptively changed, and the remaining structure remains consistent with the first embodiment.

[0071] Specifically, the support seat 32 has a cylindrical cavity, and axial holes should be set on both sides of the cylindrical cavity. Rotating shafts are set at both ends of the arc surface contact element 2, and the rotating shafts are installed in the axial holes. Bearings are installed on the rotating shafts, so that the arc surface contact element 2 can rotate freely on the support seat 32.

[0072] In this embodiment, the cover 31 is removed from the temperature conducting element 3 .

[0073] In this embodiment, by using a cylindrical arc surface contact element 2 to replace the existing flat plate or nearly flat temperature conduction sheet, it can also better contact with narrow parts such as joints, neck or armpits, and has a wider range of applications; at the same time, the cylindrical arc surface contact element 2 can also rotate in the shell 100, so that the contact arc surface can be rotated into the shell 100. The surface of the arc surface contact element 2 in the shell 100 is a cold surface, and the temperature is lower than the contact surface (hot surface). When the arc surface of the arc surface contact element 2 rotates, the hot surface can be rotated into the shell 100, thereby realizing rapid cooling of the contact surface. The switching between the cold surface and the hot surface can effectively increase the temperature transfer speed, so that the user can get a better experience.

[0074] Embodiment three:

[0075] In this embodiment, the arc surface contact element 2 is elliptical, the structure of the temperature conduction element 3 needs to be adaptively changed, and the remaining structures remain consistent with the first embodiment.

[0076] Specifically, the support seat 32 has an elliptical cavity, and mounting holes should be set on both sides of the elliptical cavity. The two ends of the elliptical arc surface contact element 2 are directly clamped in the mounting holes, so that the arc surface contact element 2 can rotate freely on the support seat 32.

[0077] In this embodiment, the cover 31 is removed from the temperature conducting element 3 .

[0078] In this embodiment, an elliptical arc surface contact element 2 is used to replace the existing flat plate or nearly flat temperature conduction sheet, which can also better contact with narrow parts such as joints, neck or armpits, and has a wider range of applications; at the same time, the elliptical arc surface contact element 2 can also rotate in the shell 100, so that the contact arc surface can be rotated into the shell 100. The surface of the arc surface contact element 2 in the shell 100 is a cold surface, and its temperature is lower than that of the contact surface (hot surface). When the arc surface of the arc surface contact element 2 rotates, the hot surface can be rotated into the shell 100, thereby realizing rapid cooling of the contact surface. The switching between the cold surface and the hot surface can effectively increase the temperature transfer speed, so that the user can get a better experience.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A contact hot and cold instrument, characterized in that: include: The arc surface contact element (2) is used to contact the human body and conduct heat or cold; A controllable temperature element (4) for generating heat or cold; A temperature conducting element (3) is used to install the arc surface contact element (2) and conduct the temperature of the controllable temperature element (4) to the arc surface contact element (2); A power source (112) for supplying energy to the controllable temperature element (4); A housing (100) for mounting a power source (112), a controllable temperature element (4) and a temperature conducting element (3); The surface of the arc surface contact element (2) is partially exposed outside the shell (100) to form a contact surface with a user; and the arc surface contact element (2) can be rotatably installed in the temperature conduction element (3), and the arc surface contact element (2) can quickly switch the temperature of the contact surface by rotating.

2. A contact hot and cold instrument according to claim 1, characterized in that: The arc surface contact element (2) is spherical.

3. A contact hot and cold instrument according to claim 2, characterized in that: The temperature conduction element (3) comprises a cover (31), a support seat (32) and a bottom plate (33); The cover (31) is detachably mounted on a support seat (32), the support seat (32) is located on a bottom plate (33), and the bottom plate (33) is mounted on a controllable temperature element; A spherical cavity is provided between the cover body (31) and the support seat (32); the arc surface contact element (2) is covered by the cover body (31) in the support seat (32), and a portion of the arc surface contact element (2) protrudes out of the cover body (31).

4. A contact hot and cold instrument according to claim 1, characterized in that: The arc surface contact element (2) is cylindrical or elliptical.

5. A contact hot and cold instrument according to claim 1, characterized in that: A heat dissipation component is also provided in the housing (100).

6. A contact hot and cold instrument according to claim 5, characterized in that: The heat dissipation component comprises a radiator (6) and a fan (7); The controllable temperature element (4) is arranged between the radiator (6) and the temperature conducting element (3); The fan (7) is used to guide the air to circulate quickly in the radiator (6); The housing (100) is provided with an air circulation structure.

7. A contact hot and cold instrument according to claim 1, characterized in that: Two opposite sides of the housing (100) are respectively provided with a handle (110) and an auxiliary lifting buckle (104); The arc surface contact element (2) is located on the bottom surface of the housing (100), and a top cover (101) is provided on the top surface of the housing (100); The power source (112) is disposed in the handle (110); The air circulation structure on the housing (100) comprises ventilation holes (102) opened on the remaining sides.

8. A contact hot and cold instrument according to claim 7, characterized in that: A PCB board (8) is arranged in the inner cavity of the housing (100), the PCB board (8) is electrically connected to the fan (7) and the controllable temperature element (4), and a plurality of control buttons (82) are arranged on the PCB board (8), and the plurality of control buttons (82) protrude above the top cover (101).

9. A contact hot and cold instrument according to claim 1, characterized in that: The temperature conduction element (3) is mounted on a first bracket (5), and the controllable temperature element (4) is mounted in a housing (100) via the first bracket (5) and a second bracket (71).

10. A contact hot and cold instrument according to claim 9, characterized in that: A radiator (6) and a fan (7) are provided between the first bracket (5) and the second bracket (71), and the controllable temperature element (4) is installed between the radiator (6) and the temperature conduction element (3).

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