Aromatherapy device

Abstract

The utility model provides an aromatherapy device which comprises a containing part, a heating device and a temperature sensor, the containing part is used for containing aromatherapy materials, the heating device comprises a flexible substrate and a heating piece arranged on the flexible substrate, the temperature sensor is arranged on the flexible substrate, the temperature sensor and the heating piece are arranged in a spaced mode, and the flexible substrate is attached to the corresponding position of the containing part. The temperature sensor is integrated on the heating device, so that the temperature sensor is attached to the containing part, the accuracy of temperature detection is improved, precise temperature control of the containing part is achieved, the fragrance diffusion amount of the aromatherapy is precisely controlled, the aromatherapy can be diffused at the specific temperature, the fragrance of the aromatherapy is kept unchanged, and the fragrance diffusion and control effects are improved.

Description

Technical Field

[0001] This application relates to the technical field of everyday consumer goods, and in particular to an aromatherapy device. Background Technology

[0002] With rising living standards and a growing desire for a higher quality of life, people are placing aromatherapy devices, especially in limited spaces, to improve air quality and mask or reduce unpleasant odors. Aromatherapy devices are increasingly used in living rooms, offices, and car interiors. One existing aromatherapy device uses a heater to heat the aromatherapy material, allowing for faster fragrance release. A temperature sensor detects the temperature of the container holding the material, thus regulating the amount of fragrance released by controlling the heater's temperature. The temperature sensor is typically located on the main control circuit board of the device. The heater is either separated from or located far from the main control circuit board and insulated from it. However, the heater needs to be placed close to the container for better heating, which results in the temperature sensor being too far from the container, leading to inaccurate temperature readings.

[0003] Therefore, it is necessary to improve existing aromatherapy devices to solve the above problems. Utility Model Content

[0004] In view of this, this application provides an aromatherapy device that can effectively solve the problem of inaccurate temperature detection caused by the temperature sensor being too far away from the container in the prior art.

[0005] This application provides an aromatherapy device, including a receiving portion, a heating element, and a temperature sensor. The receiving portion is used to receive aromatherapy materials. The heating element includes a flexible substrate and a heating element disposed on the flexible substrate. The temperature sensor is disposed on the flexible substrate and spaced apart from the heating element. The flexible substrate is attached to a corresponding position of the receiving portion.

[0006] In one embodiment, the temperature sensor is disposed at the center of the flexible substrate and is located on the side of the flexible substrate near the receiving portion.

[0007] In one embodiment, the heating element is a heating wire, which is wound and coiled on the flexible substrate to form a plurality of parallel and spaced arc segments and a connecting segment connecting two adjacent arc segments.

[0008] In one embodiment, the interval between two adjacent arc segments is greater than 2 mm.

[0009] In one embodiment, the distance between the temperature sensor and the heating element is 2mm to 5mm.

[0010] In one embodiment, the edge portion of the flexible substrate is provided with a first conductive portion and a second conductive portion, the first conductive portion and the second conductive portion are spaced apart, and the opposite ends of the heating element are respectively connected to the first conductive portion and the second conductive portion.

[0011] In one embodiment, the flexible substrate is further provided with a third conductive portion and two conductive members. The third conductive portion is spaced between the first conductive portion and the second conductive portion. The two conductive members are spaced apart and connected to the third conductive portion and the first conductive portion respectively. The two pins of the temperature sensor are electrically connected to the two conductive members respectively.

[0012] In one embodiment, the heating device includes a connection terminal and a negative wire, a positive wire, and a signal line connected to the connection terminal. The negative wire is connected to the first conductive portion, the positive wire is connected to the second conductive portion, and the signal line is connected to the third conductive portion.

[0013] In one embodiment, the receiving portion has a cavity for accommodating aromatherapy material, and a mounting position is provided on the side of the receiving portion away from the cavity, the mounting position being directly opposite the center of the cavity; the flexible substrate is disposed on the mounting position, or the aromatherapy device further includes a heat-conducting element disposed on the mounting position, located between the flexible substrate and the receiving portion.

[0014] In one embodiment, the aromatherapy device further includes a light-emitting element and a main control circuit board. The receiving part, the heating device, the light-emitting element and the main control circuit board are arranged in sequence. The heating device is electrically connected to the light-emitting element, and the light-emitting element is electrically connected to the main control circuit board.

[0015] In summary, this application provides an aromatherapy device, including a receiving portion, a heating element, and a temperature sensor. The receiving portion is used to receive aromatherapy materials. The heating element includes a flexible substrate and a heating element disposed on the flexible substrate. The temperature sensor is disposed on the flexible substrate and spaced apart from the heating element. The flexible substrate is attached to a corresponding position in the receiving portion. By integrating the temperature sensor onto the heating element, this application ensures that the temperature sensor is also close to the receiving portion when the heater is positioned near it, enabling precise detection of the temperature of the receiving portion wall. Furthermore, the flexible substrate, along with the heating element and temperature sensor, allows the flexible substrate to fit more closely to the receiving portion wall, further improving the accuracy of temperature detection. This results in precise temperature control of the receiving portion, accurately controlling the amount of aromatherapy diffused, and ensuring that the aromatherapy diffuses at a specific temperature, maintaining the aroma and enhancing the diffusion and control of the fragrance. Attached Figure Description

[0016] Figure 1This is a three-dimensional schematic diagram of the aromatherapy device of this application.

[0017] Figure 2 for Figure 1 Side sectional view of a central aromatherapy device.

[0018] Figure 3 for Figure 1 A three-dimensional schematic diagram of the heating element of a central aromatherapy device. Detailed Implementation

[0019] Before describing the embodiments in detail, it should be understood that this application is not limited to the detailed structures or element arrangements described below or in the accompanying drawings. This application can be implemented in other ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes only and should not be construed as limiting. The terms "comprising," "including," "having," and similar expressions used herein mean to include the items listed thereafter, their equivalents, and other additional items. In particular, when describing "an element," this application does not limit the number of elements to one, but may include multiple elements.

[0020] Please refer to Figures 1 to 2 As shown, this application provides an aromatherapy device 10, which includes a housing and a light-transmitting element, a light-emitting element 12, a cover 14, a main control circuit board 16, a heating element 18, a heat insulation element 20, a frame 22, and a battery 24 disposed within the housing. The housing includes an outer cover 26 and a base 28 connected to each other, for example, arranged vertically. The outer cover 26 is made of glass to facilitate heating by the heating element 18, while also allowing light to pass through so that the light emitted by the light-emitting element 12 inside the housing can be seen from the outside.

[0021] Furthermore, the aromatherapy device 10 is generally circular, and the outer cover 26 is designed with a structure that is large at both ends and small in the middle. The outer cover 26 includes a main body 30 and a first sidewall 32 and a second sidewall 34 connected to the upper and lower sides of the main body 30. The main body 30, the first sidewall 32 and the second sidewall 34 are integrally formed. The main body 30 and the first sidewall 32 together form a receiving part 36. The receiving part 36 is a bowl-shaped structure with an open top. The receiving part 36 surrounds a receiving cavity 38 for holding aromatherapy materials such as candles and aromatherapy crystals. The second sidewall 34 is conical and open at the bottom. The bottom of the second sidewall 34 covers the top of the base 28. The heating element 18 is located at the bottom of the main body 30 and is electrically connected to the light-emitting element 12 through a wire.

[0022] The main body 30, the second sidewall 34, and the base 28 together form a cavity. The light-transmitting element, the light-emitting element 12, the cover 14, the main control circuit board 16, the heating element 18, the heat insulation element 20, the frame 22, and the battery 24 are all installed within the cavity. The frame 22 is a cylindrical structure with an open bottom, and the base 28 is a cylindrical structure with an open top. The frame 22 and the base 28 are connected; for example, the bottom of the frame 22 and the top of the base 28 can be detachably connected by a snap-fit ​​mechanism for easy disassembly and maintenance. The main control circuit board 16 is fixedly installed on the top of the frame 22. The cavity is divided by the frame 22 into a first mounting cavity 40 and a second mounting cavity 42. The first mounting cavity 40 is located between the outer cover 26 and the frame 22, and the second mounting cavity 42 is located between the base 28 and the frame 22. A rotating shaft 44 protrudes from the top center of the frame 22. The cover 14 has an open bottom structure. The cover 14 is located inside the first mounting cavity 40 and covers the outside of the frame 22. The cover 14 is rotatably fitted onto the rotating shaft 44.

[0023] The light-transmitting component is located within the first mounting cavity 40. Specifically, the light-transmitting component includes a first light-transmitting cover 46 and a second light-transmitting cover 48, which are light-transmitting and have a soft light effect. For example, they are made of milky white plastic and have an aesthetic function. Both the first light-transmitting cover 46 and the second light-transmitting cover 48 are designed in a trumpet shape with the trumpet opening facing downwards. Both the first light-transmitting cover 46 and the second light-transmitting cover 48 are placed over the light-emitting component 12. The second light-transmitting cover 48 is located inside the first light-transmitting cover 46. The bottom end of the first light-transmitting cover 46 is connected to the outer edge of the bottom end of the cover 14. The first light-transmitting cover 46 and the cover 14 are detachably connected, for example, by a snap-fit ​​mechanism, to facilitate disassembly and maintenance. The bottom end of the first light-transmitting cover 46 is bonded to the inner wall of the bottom end of the second side wall 34. The bottom end of the second light-transmitting cover 46 is connected to the outer edge of the top end of the cover 14. The second light-transmitting cover 48 and the cover 14 are detachably connected, for example, by a snap-fit ​​mechanism, to facilitate disassembly and maintenance. The top end of the first light-transmitting cover 46 is engaged with the top end of the second light-transmitting cover 48 to prevent the first and second light-transmitting covers 46 and 48 from shaking. Preferably, the top ends of the first light-transmitting cover 46 and the second light-transmitting cover 48 are recessed together to form a mounting groove 50, and the heat insulation component 20 is fixedly installed in the mounting groove 50. The heating device 18 is located between the main body 30 and the heat insulation component 20, which can provide heat insulation to prevent the heat generated by the heating device 18 from being transferred into the cavity and affecting other electronic components. The bottom of the heat insulation component 20 and the mounting groove 50 is provided with a wire hole for the wires between the heating device 18 and the light-emitting component 12 to pass through. The first light-transmitting cover 46 and the second light-transmitting cover 48 are detachably connected, so that the heating device 18 will not be damaged when the outer cover 26 and the first light-transmitting cover 46 are removed.

[0024] The light-emitting element 12 is electrically connected to the main control circuit board 16. The light-emitting element 12 is, for example, a lamp board with multiple LED beads, which can display different lighting modes, such as a flame effect. The top of the light-emitting element 12 is provided with a positioning part 52 and the bottom is provided with a support part 54. Correspondingly, the top inner side of the second light-transmitting cover 48 is provided with a positioning groove, and the top of the cover 14 is provided with a snap-fit ​​groove in the area inside the second light-transmitting cover 48. The positioning part 52 is positioned and snapped into the positioning groove, and the support part 54 is supported and fixed in the snap-fit ​​groove, thereby realizing the positioning and fixing of the light-emitting element 12 and preventing the light-emitting element 12 from becoming eccentric. In the illustrated embodiment, the second mounting cavity 42 is also provided with a speaker frame and a microphone. The speaker frame is fixed in the frame 22, and the speaker frame contains a speaker that can produce sound. The speaker and the base 28 are spaced apart to form a sound cavity. A sound hole can be provided on the side wall of the base 28. The battery 24 is fixed above the speaker frame. The microphone can recognize sound and has wake-up and intelligent dialogue functions. The speaker, microphone, and battery 24 are electrically connected to the main control circuit board 16. A data interface can also be provided on the side wall of the base 28. The data interface is electrically connected to the main control circuit board 16 and can charge the battery 24 or power the aromatherapy device 10.

[0025] The outer cover 26, the first light-transmitting cover 46, the second light-transmitting cover 48, and the cover 14 are fixedly connected as a single component. This single component can rotate relative to the base 28 or the frame 22, that is, rotate around the rotation axis 44. The single component can also move up and down relative to the base 28 or the frame 22. The light-emitting component 12 and the heat-insulating component 20 rotate or move up and down together with the single component. Specifically, the main control circuit board 16 is provided with a rotary switch 56 and a push switch 58. The rotary switch 56 is engaged with the cover 14. Rotating the outer cover 26 can trigger the rotary switch 56, and pressing the outer cover 26 can trigger the push switch 58, thereby realizing functions such as starting the aromatherapy device 10, adjusting the brightness and mode of the light, or adjusting the volume. Preferably, an elastic element 59, such as a spring, is provided between the cover 14 and the frame 22 to improve the pressing feel. The top end of the spring abuts against the cover 14 and the bottom end abuts against the frame 22 to apply an upward elastic bias to the overall component. When the user presses down on the outer cover 26 and it is displaced, the overall component can automatically return to its original position under the elastic force of the spring. A limiting groove 61 can be provided between the cover 14 and the frame 22, and the spring is limited within the limiting groove 61 to prevent the spring from swinging. Preferably, multiple ribs are provided circumferentially at intervals on the outer side wall of the frame 22. The ribs are, for example, protruding structures. The ribs can cooperate with the inner wall of the cover 14 to limit the swing gap of the overall component and optimize the button feel.

[0026] Please also refer to Figure 3As shown in this application, the aromatherapy device 10 also includes a temperature sensor 60. The heating device 18 includes a flexible substrate 64 and a heating element 66 disposed on the flexible substrate 64. The temperature sensor 60 is disposed on the flexible substrate 64 and spaced apart from the heating element 66. The flexible substrate 64 is attached to the corresponding position of the receiving portion 36 so that the receiving portion 36 can be heated by the heating element 66, thereby accelerating the diffusion of the aromatherapy material in the receiving cavity 38. The temperature sensor 60 can detect the temperature of the receiving portion 36, thereby adjusting the temperature by adjusting the operating power of the heating element 66 according to actual needs, and thus adjusting the diffusion rate of the aroma. By integrating the temperature sensor 60 into the heating device 18 and disposing of the heating element 66 and the temperature sensor 60 on the flexible substrate 164, the temperature sensor 60 can be attached to the receiving portion 36, improving the accuracy of temperature detection, thereby achieving precise temperature control of the receiving portion 36, precisely controlling the amount of aroma diffusion, and enabling the aromatherapy to diffuse at a specific temperature, maintaining the aroma, and improving the diffusion and control effects of the aroma.

[0027] In the illustrated embodiment, the flexible substrate 64 is attached to the bottom wall of the receiving portion 36 on the side opposite to the receiving cavity 38, specifically, it is attached to the bottom wall of the main body portion 30. The flexible substrate 64 is made of a flexible material, thus it can be deformed arbitrarily. This deformation allows it to adapt to the shape of various parts requiring heating, resulting in better fit and more accurate temperature detection by the temperature sensor 60. Furthermore, the flexible substrate 64 can be connected to other components via adhesive, facilitating installation and allowing for better positioning. The flexible substrate 64 is, for example, circular, and both the heating element 66 and the temperature sensor 60 are disposed on the side of the flexible substrate 64 closest to the receiving portion 36.

[0028] Furthermore, the heating device 18 also includes a connection terminal 70 and a negative wire 72, a positive wire 74, and a signal line 76 connected to the connection terminal 70. Two conductive members 68 are provided, one connected to the negative wire 72 and the other to the signal line 76. One end of the heating element 66 is connected to the negative wire 72 and the other end is connected to the positive wire 74. The conductive member 68 is, for example, a conductive metal sheet. In the prior art, the temperature sensor and the heater are two separate entities. The temperature sensor has low detection accuracy, and if the temperature sensor and heater are set separately, the heater requires one live wire and one ground wire, and the temperature sensor requires one signal line and one ground wire, requiring four wires, resulting in a complex structure and high material consumption. This application integrates the temperature sensor 60 onto the heating device 18. The temperature sensor 60 and the heating element 66 can share a ground wire, which not only makes temperature recognition more accurate but also eliminates one wire, requiring only three wires and three solder points, simplifying the structure and saving materials.

[0029] In the illustrated embodiment, the flexible substrate 64 has a first conductive portion 86 and a second conductive portion 88 at its edge, spaced apart. The temperature sensor 60 is located at the center of the flexible substrate 64, so the first conductive portion 86 and the second conductive portion 88 are spaced apart from the temperature sensor 60. The opposite ends of the heating element 66 are connected to the first conductive portion 86 and the second conductive portion 88, respectively. Both the first conductive portion 86 and the second conductive portion 88 are, for example, pads. The opposite ends of the heating element 66 are connected to the first conductive portion 86 and the second conductive portion 88, respectively. The first conductive portion 86 and the second conductive portion 88 are located at the edge of the flexible substrate 64 to facilitate the connection of the live wire and the ground wire to the first conductive portion 86 and the second conductive portion 88, respectively. The temperature sensor 60 is located at the center of the flexible substrate 64, close to the receiving portion 36, so that when the flexible substrate 64 is located in the middle of the receiving portion 36, the temperature sensor 60 can detect the center position of the receiving portion 36, making the temperature detection more accurate and the data more reliable.

[0030] The flexible substrate 64 also includes a third conductive portion 90 and two conductive members 68. The third conductive portion 90 is disposed near the edge of the flexible substrate 64 and is spaced between the first conductive portion 86 and the second conductive portion 88. The two conductive members 68 are spaced apart and connected to the third conductive portion 90 and the first conductive portion 86, respectively. The temperature sensor 60 is located between the ends of the two conductive members 68, and the two pins of the temperature sensor 60 are electrically connected to the two conductive members 68, respectively. The conductive member 68 is, for example, a long strip-shaped sheet structure. One end of the conductive member 68 extends to the corresponding connecting portion and connects to the connecting portion, and the other end extends around the temperature sensor 60 to connect to the pins of the temperature sensor 60. The end of the negative wire 72 away from the connection terminal 70 is connected to the first conductive part 86, the end of the positive wire 74 away from the connection terminal 70 is connected to the second conductive part 88, and the end of the signal line 76 away from the connection terminal 70 is connected to the third conductive part 90, thereby realizing that the temperature sensor 60 is electrically connected to the negative wire 72 and the signal line 76 at the same time, and the heating element 66 is electrically connected to the negative wire 72 and the positive wire 74 at the same time.

[0031] Preferably, the temperature sensor 60 is located at the center of the flexible substrate 64, near the receiving portion 36, so that the heating element 66 is arranged around the temperature sensor 60 on its outer periphery. This allows for more uniform heating of the receiving portion 36 by the heating element 66. The temperature sensor 60 can detect the temperature at the center of the heated area of ​​the receiving portion 36, which is the area with the highest heat. The temperature sensor 60 accurately obtains the temperature of the area with the highest temperature in the receiving portion 36, thereby controlling the heating of the heating element 66 to control the rate of fragrance release within the fragrance receiving portion 36 and to prevent the fragrance from burning. The temperature sensor 60 is located at the center of the receiving portion 36. Since the temperature sensor 60 needs to detect the temperature of the glass material receiving portion 36, placing the temperature sensor 60 at the center of the flexible substrate 64 can further improve the accuracy of temperature detection.

[0032] In some embodiments, the receiving portion 36 has a mounting position on the side opposite to the receiving cavity 38. The mounting position is, for example, a groove structure. The mounting position is located at the bottom center of the main body portion 30 and is directly opposite the center of the receiving cavity 38. The flexible substrate 64 is located at the mounting position, so that the temperature sensor 60 is housed in the mounting position. This allows for more precise positioning of the temperature sensor 60 and can further improve the accuracy of temperature detection.

[0033] Furthermore, the aromatherapy device also includes a heat-conducting component (not labeled), which is located at the mounting position between the flexible substrate 64 and the receiving portion 36. The heat-conducting component is, for example, thermally conductive silicone, used to better conduct heat from the receiving portion 36 to the heat-conducting component. A temperature sensor 60 detects the temperature of the heat-conducting component, further improving the accuracy of temperature detection. The temperature sensor 60 is located on the flexible substrate 64 near the heat-conducting component. Understandably, the heat-conducting component is installed at the mounting position first, and then the heating element 18 is installed on the heat-conducting component. The dimensions of the heat-conducting component are the same as those of the flexible substrate 64; the heat-conducting component can also be integrally formed with the flexible substrate and then mounted at the mounting position, without any specific limitation.

[0034] In the illustrated embodiment, the heating element 66 is a heating wire. The heating wire is wound around the temperature sensor 60 in a curved and coiled manner on the flexible substrate 64, forming multiple parallel and spaced arc segments 78 and connecting segments 79 connecting adjacent arc segments 78. The connecting segments 79 are also arc-shaped, for example. The heating wire is wound in an arc shape, which makes the heating wire longer, uses more heating wire, has a higher utilization rate, and has a better heating effect. The spacing between two adjacent arc segments 78 is greater than 2 mm to prevent short circuits. Similarly, the spacing between two adjacent connecting segments 79 is also greater than 2 mm. To improve the detection accuracy of the temperature sensor 60, the distance between the temperature sensor 60 and the heating element 66 is set to 2mm to 5mm. If the distance between the temperature sensor 60 and the heating element 66 is less than 2mm, the temperature sensor 60 will detect more of the temperature of the heating element 66, affecting the accuracy of the detection. The high temperature of the heating element 66 will also affect the lifespan of the temperature sensor 60. If the distance between the temperature sensor 60 and the heating element 66 is greater than 5mm, the layout area of ​​the heating element 66 will be smaller, affecting the heating effect.

[0035] Preferably, the first conductive portion 86, the second conductive portion 88, and the third conductive portion 90 are all located at the edge of the flexible substrate 64. The heating wire can be gradually wound from the edge towards the center of the flexible substrate 64 to increase the winding length of the heating wire. Both ends of the heating element 66 extend to the edge of the flexible substrate 64 and are concentrated in the same area at the edge, which also facilitates wire soldering. It should be noted that the edge of the flexible substrate 64 refers to the area on the side of the flexible substrate 64 away from the center. For example, the edge of the flexible substrate 64 can be defined as the area covered by extending 10mm from the center of the flexible substrate 64 along the side of the flexible substrate 64. The negative electrode wire 72, the positive electrode wire 74, and the signal line 76 all extend beyond the flexible substrate 64, and the connection terminal 70 is located outside the flexible substrate 64. The negative electrode wire 72, the positive electrode wire 74, and the signal line 76 pass through the heat insulation member 20 and the wire hole at the bottom of the mounting groove 50. The connection terminal 70 is electrically connected to the light-emitting element 12. In the illustrated embodiment, the housing 36, heating device 18, light-emitting element 12, and main control circuit board 16 are arranged sequentially from top to bottom. The main control circuit board 16 is farther away from the heating device 18, while the light-emitting element 12 is closest to the heating device 18. The heating device 18 is directly electrically connected to the light-emitting element 12, which facilitates circuit connection and saves wiring.

[0036] In summary, this application provides an aromatherapy device, including a receiving portion, a heating element, and a temperature sensor. The receiving portion is used to receive aromatherapy materials. The heating element includes a flexible substrate and a heating element disposed on the flexible substrate. The temperature sensor is disposed on the flexible substrate and spaced apart from the heating element. The flexible substrate is attached to a corresponding position in the receiving portion. By integrating the temperature sensor onto the heating element and attaching it to the receiving portion, this application improves the accuracy of temperature detection, thereby achieving precise temperature control of the receiving portion, accurately controlling the amount of aroma diffused, and enabling the aromatherapy to diffuse at a specific temperature, maintaining the aroma's fragrance, and improving the diffusion and control effects of the fragrance.

[0037] The concepts described herein may be implemented in other forms without departing from their spirit and characteristics. The specific embodiments disclosed should be considered illustrative rather than restrictive. Therefore, the scope of this application is determined by the appended claims, and not by the preceding description. Any changes within the literal meaning and equivalent scope of the claims should fall within the scope of those claims.

Claims

1. An aromatherapy device, characterized in that, The device includes a receiving portion, a heating element, and a temperature sensor. The receiving portion is used to receive aromatherapy materials. The heating element includes a flexible substrate and a heating element disposed on the flexible substrate. The temperature sensor is disposed on the flexible substrate and spaced apart from the heating element. The flexible substrate is attached to the corresponding position of the receiving portion.

2. The aromatherapy device as described in claim 1, characterized in that, The temperature sensor is located at the center of the flexible substrate and is situated on the side of the flexible substrate closest to the receiving portion.

3. The aromatherapy device as described in claim 1, characterized in that, The heating element is a heating wire, which is wound and coiled on the flexible substrate to form multiple parallel and spaced arc segments and a connecting segment between two adjacent arc segments.

4. The aromatherapy device as described in claim 3, characterized in that, The interval between two adjacent arc segments is greater than 2 mm.

5. The aromatherapy device as described in claim 1, characterized in that, The distance between the temperature sensor and the heating element is 2mm to 5mm.

6. The aromatherapy device as described in claim 1, characterized in that, The flexible substrate has a first conductive portion and a second conductive portion at its edge, with the first conductive portion and the second conductive portion spaced apart. The opposite ends of the heating element are respectively connected to the first conductive portion and the second conductive portion.

7. The aromatherapy device as described in claim 6, characterized in that, The flexible substrate is further provided with a third conductive part and two conductive members. The third conductive part is spaced between the first conductive part and the second conductive part. The two conductive members are spaced apart and connected to the third conductive part and the first conductive part respectively. The two pins of the temperature sensor are electrically connected to the two conductive members respectively.

8. The aromatherapy device as described in claim 7, characterized in that, The heating device includes a connection terminal and a negative wire, a positive wire, and a signal line connected to the connection terminal. The negative wire is connected to the first conductive part, the positive wire is connected to the second conductive part, and the signal line is connected to the third conductive part.

9. The aromatherapy device as described in any one of claims 1-8, characterized in that, The receiving portion has a cavity for accommodating aromatherapy materials. The receiving portion has a mounting position on the side opposite to the cavity, and the mounting position is directly opposite the center of the cavity. The flexible substrate is disposed on the mounting position. Alternatively, the aromatherapy device further includes a heat-conducting element disposed on the mounting position, located between the flexible substrate and the receiving portion.

10. The aromatherapy device as described in claim 9, characterized in that, The aromatherapy device also includes a light-emitting element and a main control circuit board. The housing, the heating element, the light-emitting element and the main control circuit board are arranged in sequence. The heating element is electrically connected to the light-emitting element, and the light-emitting element is electrically connected to the main control circuit board.

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