CN212588539U

CN212588539U - Portable heater

Info

Publication number: CN212588539U
Application number: CN202022090079.5U
Authority: CN
Inventors: 雷桂斌; 苏荣飞; 潘小林
Original assignee: Shenzhen Romoss Technology Co Ltd
Current assignee: Shenzhen Romoss Technology Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-02-23
Anticipated expiration: 2030-09-22

Abstract

The utility model relates to a portable heater. The portable heater includes: a housing; the heat insulation plate is accommodated in the shell, and a heating coil is arranged on the heat insulation plate; and the power supply element is accommodated in the shell and positioned on one side of the heat insulation plate, which is deviated from the heating coil, and the power supply element is used for supplying power to the heating coil so as to enable the heating coil to generate a heating magnetic field. Above-mentioned portable heater, the integration has the heat insulating board that sets up heating coil, through supply element is right heating coil power supply makes heating coil produces heating magnetic field, can heat food, makes the dining in scenes such as open air or office more convenient.

Description

Portable heater

Technical Field

The utility model relates to a food heating technology field especially relates to a portable heater.

Background

When having a meal in scenes such as outdoors or offices, food generally needs to be heated to ensure the sanitation of the food and simultaneously improve the dining experience. At present, food is often heated by a food heater such as a microwave oven. However, the existing food heater is large in size and not convenient to carry, so that dining is inconvenient in outdoor or office occasions.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a portable heater for solving the problem that the conventional food heater is not easy to carry, and is inconvenient to eat in outdoor or office occasions.

A portable heater, comprising:

a housing;

the heat insulation plate is accommodated in the shell, a heating coil is arranged on the heat insulation plate, a heating plate is formed at the part of the shell opposite to the heating coil, and the surface of the heating plate, which is far away from the heat insulation plate, is used for placing an object to be heated;

the power supply element is accommodated in the shell, is positioned on one side, away from the heating coil, of the heat insulation plate and is used for supplying power to the heating coil so as to enable the heating coil to generate a heating magnetic field;

an input element electrically connected to the power supply element, the power supply element capable of storing electrical energy when an external power source is electrically connected to the input element; and

and the output element is electrically connected with the power supply element, and when an external electronic device is electrically connected with the output element, the power supply element can release electric energy to the electronic device through the output element.

In one embodiment, the casing includes a bottom plate and a side plate that are connected to each other, the side plate surrounds the edges of the bottom plate and the heating plate, the side plate is connected to the heating plate, the power supply element is clamped between the bottom plate and the heat insulation plate, the side plate extends to form a buckle, and the buckle abuts against one side of the heat insulation plate that is far away from the power supply element to fix the heat insulation plate.

In one embodiment, the power supply element is provided with a plurality of power supply elements, the surface of the bottom plate facing the heat insulation plate is provided with a plurality of first positioning grooves, the surface of the heat insulation plate facing the bottom plate is provided with a plurality of second positioning grooves, the power supply element, the first positioning grooves and the second positioning grooves are in one-to-one correspondence, and two sides of each power supply element are respectively limited in the corresponding first positioning grooves and the corresponding second positioning grooves.

In one embodiment, a stepped groove is formed in one end, away from the bottom plate, of the side plate, the heating plate is embedded into the side plate in the stepped groove, and the heating plate is opposite to the bottom plate; and/or

And a containing groove is formed in one side of the heating plate, which is far away from the heat insulation plate, and the containing groove is used for placing the object to be heated.

In one embodiment, the portable heater further comprises a control element, the control element is electrically connected with the power supply element and the heating coil to control the power supply element to supply power to the heating coil, the control element is fixed in the shell, and the control element abuts against the power supply element in the extending direction of the power supply element.

In one embodiment, an inverter circuit is integrated on the control element, and the inverter circuit can convert the direct current output by the power supply element into alternating current to supply power to the heating coil.

In one embodiment, the portable heater further includes a temperature control element and a heat exhausting air pump, the temperature control element is disposed on a side of the heat insulation board facing the power supply element, the heat exhausting air pump is disposed on a side of the heat insulation board facing the power supply element, the temperature control element is provided with a temperature threshold, and when the temperature detected by the temperature control element exceeds the temperature threshold, the heat exhausting air pump is turned on to exhaust the heat in the casing out of the casing.

In one embodiment, the portable heater further comprises a positioning bone, the positioning bone is arranged on the surface of the heat insulation plate, which faces away from the power supply element, the shape of the positioning bone is matched with that of the inner ring of the heating coil, and the positioning bone is embedded into the inner ring of the heating coil.

In one embodiment, the portable heater further comprises a display and a temperature sensor, wherein the temperature sensor is arranged between the inner rings of the heating coil, and the display is used for displaying the temperature value sensed by the temperature sensor; and/or the presence of a gas in the gas,

the power supply device further comprises a display, and the display is used for displaying the residual capacity of the power supply element.

In one embodiment, the housing includes a bottom plate, a heating plate, and a display lens, the bottom plate is opposite to the heating plate, the display is accommodated in the housing, the heating plate is provided with a display hole, the display hole is opposite to a display surface of the display, and the display lens is disposed in the display hole.

According to the portable heater, the heat insulation plate provided with the heating coil is integrated on the basis of the mobile power supply, and the heating coil is powered by the power supply element to generate a heating magnetic field, so that food can be heated. The portable heater is small in size and convenient to carry, can be used as a portable food heater, and enables dining in outdoor or office scenes to be more convenient. Simultaneously, supply power to heating coil through the power supply element among the portable heater, can avoid not having the power supply socket to supply power and lead to the condition of unable heating when heating food, further promote the convenience of outdoor dining. In addition, the portable heater has the charging and discharging effects of the mobile power supply and the effect of heating the object to be heated, and has stronger functions and wider application range.

Drawings

FIG. 1 is a schematic view of a portable heater according to some embodiments of the present application;

FIG. 2 is a schematic view of another angled portion of the portable heater according to some embodiments of the present disclosure;

FIG. 3 is a schematic view of a further angular portion of a portable heater according to some embodiments of the present application;

FIG. 4 is a schematic diagram of a control element in some embodiments of the present application.

110, a shell; 111. a base plate; 112. a first positioning groove; 113. a second positioning groove; 114. heating plates; 115. a display aperture; 116. displaying the lens; 117. a side plate; 118. a stepped groove; 119. buckling; 130. a power supply element; 140. a heat insulation plate; 141. a heating coil; 142. positioning the bone; 150. a control element; 151. an output element; 152. an input element; 153. a bi-directional element; 154. a display; 155. and a control button.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, fig. 1 shows a schematic view of a portable heater according to some embodiments of the present application, and fig. 2 shows a schematic view of a portion of the structure of the portable heater according to some embodiments of the present application. In particular, the portable heater includes a power supply element 130, such as a lithium battery, which may be used to charge an external electronic device such as a smart phone, a bluetooth headset, or the like. The portable heater further includes a housing 110 and a heat insulation board 140, the power supply element 130 and the heat insulation board 140 are accommodated in the housing 110, and a heating coil 141 is disposed on a surface of the heat insulation board 140 facing away from the power supply element 130. The power supply element 130 can supply power to the heating coil 141 to cause the heating coil 141 to generate a heating magnetic field. Thereby, when an object to be heated (not shown) approaches the heating coil 141, the heating magnetic field generated by the heating coil 141 can heat the object to be heated, for example, an object to be heated with food or the like.

The portable heater can be used as a portable power source to charge an external electronic device and can also be used for heating an object to be heated such as food. With heating coil 141 in portable power source integration, small, convenient to carry makes when scenes such as open air or office have a dinner, it is more convenient to heat food. Meanwhile, the power supply element 130 in the portable heater supplies power to the heating coil 141, so that the condition that the food cannot be heated due to no power supply socket or other power supply equipment can be avoided, and the heating of the food is further more convenient. In addition, the heating coil 141 is integrated into the portable heater, so that the portable heater has both charging and heating functions, and the portable heater has a stronger function, thereby increasing the application range of the portable heater.

More specifically, in some embodiments, the housing 110 includes a bottom plate 111, a heating plate 114, and side plates 117. The bottom plate 111 is disposed opposite to the heating plate 114, the side plate 117 is disposed between the bottom plate 111 and the heating plate 114, and the side plate 117 surrounds edges of the bottom plate 111 and the heating plate 114 and is connected to the bottom plate 111 and the heating plate 114. The power supply element 130 and the heat insulating plate 140 are accommodated in an accommodating space defined by the bottom plate 111, the heating plate 114, and the side plate 117, both sides of the power supply element 130 are respectively abutted against the bottom plate 111 and the heat insulating plate 140, and the surface of the heat insulating plate 140 on which the heating coil 141 is provided is disposed toward the heating plate 114. In other words, the bottom plate 111, the power supply element 130, the heat insulating plate 140, and the heating plate 114 are stacked, thereby reducing the size of the portable heater in the thickness direction.

It should be noted that, in the embodiment shown in fig. 1, in order to embody the internal structure of the portable heater, the heating plate 114 is separated from the side plate 117, and when the portable heater is assembled, the heating plate 114 should be connected to the side plate 117. For example, in some embodiments, the end of the side plate 117 away from the bottom plate 111 is formed with a stepped groove 118, and the heating plate 114 is embedded in the stepped groove and connected to the side plate 117 by any suitable connection method, such as gluing or fastening 119. The surface of the heating plate 114 facing away from the heat shield 140 is used to carry an object to be heated, for example, in some embodiments, the surface of the heating plate 114 facing away from the heat shield 140 is provided with receiving grooves (not shown) for receiving an object to be heated, so as to facilitate the positioning and fixing of the object to be heated on the heating plate 114.

Further, in some embodiments, the portable heater further comprises a control element 150, and the control element 150 may be a circuit board integrated with a control circuit. The control element 150 is electrically connected to the power supply element 130 and the heating coil 141 to control the power supply element 130 to supply power to the heating coil 141. Referring also to fig. 3, the control element 150 is fixed in the housing 110, and one side of the control element 150 abuts against the side plate 117, the other side abuts against the power supply element 130 in the extending direction of the power supply element 130, and the other side of the power supply element 130 abuts against the side plate 117 in the extending direction. Therefore, through reasonable position design, the control element 150, the power supply element 130 and the heat insulation plate 140 do not interfere with each other, and meanwhile, the control element 150, the power supply element 130, the heat insulation plate 140 and the shell 110 are compact in structure in the length direction and the thickness direction of the portable heater, so that the volume of the portable heater is further reduced, and the miniaturization design of the portable heater is facilitated. For example, in some embodiments, the portable heater may be a rectangular parallelepiped, and by the above location design, the overall size of the portable heater may be: 168mm long, 81mm wide and 25.6mm thick. The portable heater has small volume and is convenient to carry.

In some embodiments, three edges of the heat insulation board 140 are abutted with the side plate 117, and a portion of the side plate 117 contacting with the heat insulation board 140 extends inward to form a plurality of buckles 119, and the plurality of buckles 119 are arranged at intervals on a side of the heat insulation board 140 facing away from the power supply element 130 and abutted with the heat insulation board 140. Thus, the clip 119 and the bottom plate 111 sandwich the power supply element 130 and the heat insulating plate 140 together, and fix the power supply element 130 and the heat insulating plate 140 in the case 110.

Further, referring to fig. 2 and 3, the number of the power supply elements 130 is not limited, and in some embodiments, eight power supply elements 130 are provided, wherein every four power supply elements 130 are arranged in parallel, and every two power supply elements 130 are arranged in parallel, that is, the power supply elements 130 are arranged in two rows and two columns. Four first positioning grooves 112 are formed in the surface of the bottom plate 111 facing the heat insulation plate 140, four second positioning grooves 113 are formed in the surface of the heat insulation plate 140 facing the bottom plate 111, and each row of the power supply elements 130, the first positioning grooves 112 and the second positioning grooves 113 correspond to each other one by one. Each first positioning groove 112 is opposite to a corresponding second positioning groove 113, and two sides of each row of power supply elements 130 are respectively located in the corresponding first positioning groove 112 and the corresponding second positioning groove 113. The first positioning groove 112 and the second positioning groove 113 are arranged to limit the power supply element 130, and the power supply element 130 can be stably fixed in the casing 110 by matching with the limit of the side plate 117 and the control element 150. Meanwhile, when the second positioning groove 113 and the power supply element 130 are limited to each other, the positioning of the heat insulation plate 140 can also be achieved. In other words, the heat insulation plate 140 is partially embedded between the adjacent power supply elements 130, so that the heat insulation plate 140 is not easily shaken and is better fixed in the housing 110. Of course, when the number of the power supply elements 130 is different, the number of the first positioning slots 112 and the number of the second positioning slots 113 should be adjusted, and when the power supply elements 130 are arranged in only one row, the power supply elements 130 correspond to the first positioning slots 112 and the second positioning slots 113 one by one.

In addition, when the object to be heated is placed on the surface of the heating plate 114 facing away from the heat insulating plate 140 and the heating magnetic field generated by the heating coil 141 heats the object to be heated, the object to be heated is heated, and the heat of the object to be heated is also conducted to the inside of the portable heater through the heating plate 114. Therefore, in order to prevent the heat from interfering with the power supply element 130 and affecting the service life of the power supply element 130, the heat insulation board 140 should have good heat resistance and heat insulation performance. For example, in some embodiments, the thermal insulation panel 140 is made of polybutylene terephthalate (PBT) or nylon material that is resistant to high temperatures and has good thermal insulation properties. Further, in some embodiments, the power supply element 130 is a 18650 lithium battery with good hardness and heat resistance. Of course, the heating plate 114 should have good heat resistance, and the heating plate 114 may be made of a material that is easily penetrated by a magnetic field so as to prevent the heating plate 114 from interfering with the heating magnetic field generated by the heating coil 141 to heat the object to be heated. For example, in some embodiments, the heating plate 114 is a ceramic material.

In some embodiments, the portable heater may further include a temperature control element (not shown) and a heat exhausting pump (not shown), and the temperature control element is disposed on a side of the heat insulation board 140 facing the power supply element 130 to detect heat transferred to a space where the power supply element 130 is located through the heat insulation board 140. The heat exhausting pump is disposed on a side of the heat insulation board 140 facing the power supply unit 130, and the heat exhausting pump is communicated with the outside of the housing 110. For example, in some embodiments, the heat rejection air pump extends through the side panel 117, and an exhaust port of the heat rejection air pump is disposed toward the outside of the housing 110. The temperature control element is provided with a temperature threshold, which may in particular be a temperature value that does not damage the power supply element 130. When the temperature control element detects that the temperature of the side of the heat insulation board 140 facing the power supply element 130 exceeds the temperature threshold, the temperature control element controls the heat exhausting pump to be turned on, so as to exhaust the heat in the space where the power supply element 130 is located out of the housing 110, and reduce the temperature in the space where the power supply element 130 is located, so as to prevent the power supply element 130 from being damaged due to overhigh temperature.

Since the power supply element 130 in the portable heater is mostly a dc power output, it is generally necessary to apply an ac power to the heating coil 141 in order to generate a heating magnetic field by the heating coil 141. Therefore, in some embodiments, the control element 150 is integrated with a boosting inverter circuit, which can convert the low-voltage dc power output by the power supply element 130 into a boosting ac power to supply power to the heating coil 141, so that the heating coil 141 generates a sufficient heating magnetic field to heat the object to be heated.

Referring to fig. 1 and 2, in some embodiments, the heating coil 141 is formed by winding a plurality of coils from inside to outside, the coil with the smallest radial dimension among the heating coils 141 forms an inner coil of the heating coil 141, and the heating coil 141 is fixed to the heat-insulating plate 140 by any suitable connection method such as gluing or welding. In order to facilitate the positioning of the heating coil 141, the portable heater may further include a positioning rib 142, the positioning rib 142 is formed in a ring structure, the positioning rib 142 is fixedly disposed on a surface of the heat insulation plate 140 facing away from the power supply element 130, and the shape of the positioning rib 142 is adapted to the inner ring of the heating coil 141. When the heating coil 141 is fixed on the heat insulation plate 140, the positioning rib 142 is embedded into the inner ring of the heating coil 141, that is, the inner ring of the heating coil 141 is sleeved on the positioning rib 142, and the positioning rib 142 is arranged to enable the positioning of the coil to be more accurate and the fixation to be more stable.

Referring to fig. 1 and 4 together, in order to facilitate the power supply element 130 to charge the external electronic device or the external power supply to charge the power supply element 130, in some embodiments, the portable heater further includes an output element 151 and an input element 152, and the control element 150 is integrated with a charging and discharging circuit electrically connected to the power supply element 130. The output element 151 may be an output port from which a charging/discharging line is led, for example, a USB interface, and the power supply element 130 can supply power to the external electronic device through the output element 151, in other words, the power supply element 130 can discharge power to the external electronic device through the output element 151. The input element 152 may be an input port from which a charging/discharging line is led, such as an MIC-5PIN interface, and the external power source charges the power supply element 130 through the input element 152, so that the power supply element 130 stores electric energy. The input element 152 and the input element 152 penetrate the side plate 117 and the interface is disposed outward so as to be connected with an external electronic device or a power supply. Of course, the number of output elements 151 is not limited as long as the charging load of the power supply element 130 is not exceeded, for example, in some embodiments, the portable heater includes two output elements 151, i.e., the power supply element 130 is capable of simultaneously charging two electronic devices. In some embodiments, the charging and discharging line may also lead out of a bi-directional element 153, such as a TYPE-C interface, the bi-directional element 153 being able to be used both for charging the power supply element 130 and for charging an external electronic device.

Further, in some embodiments, the portable heater further includes a display 154 and a temperature sensor (not shown) for sensing a heating temperature of the object to be heated, and the display 154 can display a temperature value sensed by the temperature sensor to facilitate real-time monitoring of the heating temperature. Specifically, since the heating magnetic field generated by the heating coil 141 passes through the inner rings of the heating coil 141, when heating an object to be heated, the object to be heated is generally opposed to a portion between the inner rings of the heating coil 141. Accordingly, a temperature sensor may be provided on the heat insulating plate 140 between the inner coils of the heating coil 141, and when an object to be heated is heated, the heat of the object to be heated is transferred to the temperature sensor through the heating plate 114, and the temperature sensor displays the heating temperature of the object to be heated through the display 154. At this time, the temperature sensor is positioned in the case 110 to be spaced apart from the heating plate 114, and thus the temperature sensor is not easily damaged. In other embodiments, a temperature sensor may also be provided on the side of the heating plate 114 facing away from the heat shield 140, the temperature sensor being in contact with the object to be heated when the object to be heated is heated.

Of course, in some embodiments, when the object to be heated is not required to be heated, the display 154 may also be used to display the remaining power of the power supply element 130, so as to facilitate real-time monitoring of the remaining power of the power supply element 130. In some embodiments, the portable heater may further include a control button 155, the control button 155 being disposed on the control member 150, and the control button 155 extending out of the side panel 117. The control button 155 is electrically connected to the display 154 through a control circuit of the control unit 150 to control the display 154 to be turned on or off. Specifically, in some embodiments, when control buttons 155 control display 154 to turn off, display 154 does not display content. When the portable heater does not heat the object to be heated, that is, the heating coil 141 is not energized, the control button 155 controls the display 154 to be turned on, and the display 154 displays the remaining capacity of the power supply element 130. When the portable heater heats the object to be heated, i.e., the heating coil 141 is energized, the control button 155 controls the display 154 to be turned on, and the temperature value sensed by the temperature sensor of the display 154 is displayed. By providing the button and display 154, the status of the portable heater can be monitored and more conveniently used.

In some embodiments, a display 154 is disposed on the control element 150, with a display surface of the display 154 opposing the heating plate 114. The heating plate 114 has a display hole 115 facing the display surface of the display 154, and the user can obtain the content displayed by the display 154 through the display hole 115. Of course, in some embodiments, the heating plate 114 may further include a transparent display lens 116, and the display lens 116 is disposed in the display hole 115 to prevent dust from entering the inside of the housing 110 and protect the inside of the housing 110.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A portable heater, comprising:

a housing;

2. The portable heater of claim 1, wherein the housing includes a bottom plate and a side plate connected to each other, the side plate surrounds edges of the bottom plate and the heating plate, the side plate is connected to the heating plate, the power supply unit is clamped between the bottom plate and the heat insulation plate, the side plate is extended to form a buckle, and the buckle abuts against a side of the heat insulation plate facing away from the power supply unit to fix the heat insulation plate.

3. The portable heater according to claim 2, wherein the power supply element is provided with a plurality of power supply elements, the bottom plate is provided with a plurality of first positioning grooves on the surface facing the heat insulation plate, the heat insulation plate is provided with a plurality of second positioning grooves on the surface facing the bottom plate, the power supply element, the first positioning grooves and the second positioning grooves are in one-to-one correspondence, and two sides of each power supply element are respectively limited in the corresponding first positioning grooves and the corresponding second positioning grooves.

4. The portable heater of claim 2, wherein the side plate has a stepped groove at an end thereof remote from the bottom plate, the heating plate is embedded in the side plate at the stepped groove, and the heating plate is opposite to the bottom plate; and/or

5. The portable heater according to claim 2, further comprising a control member electrically connected to the power supply member and the heating coil to control the power supply member to supply power to the heating coil, wherein the control member is fixed in the housing, and abuts against the power supply member in an extending direction of the power supply member.

6. The portable heater according to claim 5, wherein an inverter circuit is integrated on the control element, and the inverter circuit is capable of converting the direct current output from the power supply element into an alternating current to supply power to the heating coil.

7. The portable heater according to any one of claims 1-6, further comprising a temperature control element disposed on a side of the heat insulation board facing the power supply element, and a heat exhaust air pump disposed on a side of the heat insulation board facing the power supply element, wherein the temperature control element is provided with a temperature threshold, and when the temperature detected by the temperature control element exceeds the temperature threshold, the heat exhaust air pump is turned on to exhaust heat in the case out of the case.

8. The portable heater according to any one of claims 1 to 6, further comprising a positioning rib provided on a surface of the heat insulating plate facing away from the power supply element, the positioning rib being shaped to conform to the inner ring of the heating coil, the positioning rib being embedded in the inner ring of the heating coil.

9. The portable heater according to any one of claims 1 to 6, further comprising a display and a temperature sensor, wherein the temperature sensor is disposed between the inner coils of the heating coil, and the display is configured to display a temperature value sensed by the temperature sensor; and/or the presence of a gas in the gas,

10. The portable heater according to claim 9, wherein the housing includes a bottom plate, a heating plate, and a display lens, the bottom plate is opposite to the heating plate, the display is accommodated in the housing, the heating plate has a display hole, the display hole is opposite to a display surface of the display, and the display lens is disposed in the display hole.