Infrared forehead thermometer

Abstract

The invention relates to an infrared forehead temperature meter, which comprises a first shell, a second shell, a main control chip, a power supply and an infrared probe, the main control chip and the power supply are arranged in the first shell, the second shell is arranged in the first shell, the infrared probe is arranged in the first shell, the infrared probe is electrically connected with the main control chip, the second shell is provided with a heat conduction block made of a high heat conductivity coefficient material, and the heat conduction block is electrically connected with the main control chip. A temperature sensor is embedded in the heat conduction block and electrically connected with the main control chip, the heat conduction block makes contact with the outside, and the temperature sensor is used for detecting the temperature of the heat conduction block. When the forehead temperature meter is taken out, the heat conduction block rapidly synchronizes the temperature of the heat conduction block with the outside, after the temperature sensor detects the temperature of the heat conduction block, detection data are synchronized to the main control chip to serve as a compensation basis of a dynamic compensation value of forehead temperature measurement data, and in different external environment temperatures, the forehead temperature meter can be taken out and adapted for a short time for measurement. And the requirement of being used in a short time after starting up can be met.

Description

Technical Field

[0001] This application relates to the technical field of forehead thermometers, and in particular to an infrared forehead thermometer and its data processing method. Background Technology

[0002] Infrared forehead thermometers, as a rapid, non-contact body temperature measurement device, play an important role in public health and epidemic prevention.

[0003] The working principle of an infrared forehead thermometer is based on the Stefan-Boltzmann law. Since the human forehead is an "approximately blackbody," it continuously radiates infrared rays. Therefore, by detecting this radiation, the infrared forehead thermometer can inversely calculate the forehead temperature and thus the core body temperature. It has advantages such as fast measurement speed, simple operation, and no risk of cross-infection.

[0004] However, in practical applications, the forehead temperature data obtained is equal to the core body temperature only when the human body is in a standard room temperature. When in the outside world, there will be a difference between the forehead temperature data and the core body temperature. Common forehead thermometers usually detect the ambient temperature and then compensate for the measured forehead temperature data based on the ambient temperature. The final body temperature data = measured forehead temperature data + dynamic compensation value.

[0005] However, traditional forehead thermometers typically use a temperature sensor to detect the outside air temperature to determine the outside temperature, which takes a long time and cannot meet the need for short waiting time after powering on before use. Summary of the Invention

[0006] To address the issue that traditional infrared forehead thermometers require a considerable amount of time to detect the ambient temperature after being removed before measurement, and cannot meet the requirement of being usable immediately after powering on, this application provides an infrared forehead thermometer and its data processing method.

[0007] The infrared forehead thermometer provided in this application adopts the following technical solution: An infrared forehead thermometer includes a first housing, a second housing, a main control chip, a power supply, and an infrared probe. The main control chip and the power supply are both installed in the first housing, and the second housing is installed in the first housing. The infrared probe is located in the first housing and is used to detect infrared radiation from the forehead. The infrared probe is electrically connected to the main control chip, and the power supply is used to supply power to the main control chip. The second housing has a heat-conducting block made of a material with high thermal conductivity. A temperature sensor is embedded in the heat-conducting block and is electrically connected to the main control chip. The heat-conducting block is in contact with the outside environment, and the temperature sensor is used to detect the temperature of the heat-conducting block.

[0008] Through the above technical solution, when the forehead thermometer is removed, the heat-conducting block will quickly exchange heat with the external environment, thereby rapidly synchronizing the temperature of the heat-conducting block with the temperature of the external environment. Then, after the temperature sensor detects the temperature of the heat-conducting block, the external ambient temperature can be detected quickly and accurately. The detection data is then synchronized to the main control chip as the basis for dynamic compensation value of the forehead temperature measurement data. This allows the forehead thermometer to restore measurement accuracy after a short period of adaptation in different external ambient temperatures, meeting the requirement of being usable shortly after powering on.

[0009] Optionally, the heat-conducting block has a first mounting hole, the infrared probe is disposed in the first mounting hole, and the infrared probe is thermally connected to the heat-conducting block.

[0010] Optionally, the heat-conducting block has a second mounting hole for mounting a temperature sensor. The heat-conducting block includes a first segment and a second segment, which can be assembled together. The assembly surfaces of the first segment and the second segment each have a first mounting groove and a second mounting groove. When the first segment and the second segment are assembled together, the first mounting grooves are assembled to form the first mounting hole, and the second mounting grooves are assembled to form the second mounting hole. The second housing has a bracket for mounting the heat-conducting block. The second housing has several heat-conducting channels, each of which is divided into two parts. The two parts of the heat-conducting channels are respectively used to connect the outside to the first segment or the outside to the second segment.

[0011] Optionally, the bracket includes a mounting ring and several support plates. The outer wall of the mounting ring is connected to the inner wall of the second housing. The support plates are circumferentially spaced around the axis of the mounting ring on the end face of the mounting ring. The space enclosed by the support plates is frustum-shaped. One end of the first and second segments, after being assembled together, is fitted into the space enclosed by the support plates. The ends of the first and second segments away from the space enclosed by the support plates are assembled together and located in the mounting ring and threadedly connected to the mounting ring. The heat conduction channel is connected to the support plates through a gap.

[0012] Optionally, the support plate is made of an elastic material. Under normal conditions, the space enclosed by the support plate is smaller than the volume of one end of the frustum-shaped structure formed by the first and second segments. When one end of the first and second segments is fitted into the space enclosed by the support plate, the support plate is opened and the support plate fits against the side wall of the frustum-shaped end formed by the first and second segments.

[0013] Optionally, the infrared probe is provided with a push block at its end, and the ends of the first segment and the second segment are provided with connecting grooves, with the two ends of the push block respectively embedded in the two connecting grooves.

[0014] Optionally, a fixing groove is provided on the side where the first block and the second block are joined together, and a fixing block is provided on the side where the first block and the second block are joined together. The fixing groove and the fixing block are fitted together. The fixing groove and the fixing block are symmetrically distributed with respect to the axis of the first block or the second block. When the first block and the second block are joined together, the fixing block of the first block is fitted into the fixing groove of the second block, and the fixing block of the second block is fitted into the fixing groove of the first block.

[0015] Optionally, one end of the infrared probe and the temperature sensor are each provided with a first electrode plate. The first electrode plate is located outside the heat-conducting block. The first electrode plate is used to supply power to the infrared probe or the temperature sensor after being connected to a power source. The second housing is detachably disposed on the first housing. The first housing is provided with a plurality of second electrode plates. The second electrode plates correspond one-to-one with the first electrode plates. When the second housing is disposed on the first housing, the first electrode plates are pressed against the second electrode plates one-to-one.

[0016] Optionally, the main body of the infrared probe is frustum-shaped, and the diameter of the signal receiving end of the main body of the infrared probe is smaller than the diameter of the signal output end of the main body of the infrared probe.

[0017] Optionally, a frame is coaxially mounted at the smaller diameter end of the heat-conducting block. The frame is annular, and a lens is mounted at one end of the frame. The lens protects the infrared probe and filters out infrared radiation of unwanted frequency bands. The lens also focuses the infrared radiation of the frequency band to be detected. The end face of the other end of the frame is fitted with the smaller diameter end face of the heat-conducting block. One end of the infrared probe extends from the heat-conducting block and is embedded in the frame. A sealing ring is provided at the junction of the frame, the infrared probe, and the heat-conducting block. The sealing ring abuts against the sidewall of the frame, the sidewall of the infrared probe, and the end face of the heat-conducting block, respectively. The outer sidewall of the frame is flush with and extends along the outer sidewall of the heat-conducting block. The outer sidewall of the frame abuts against the support plate.

[0018] In summary, after the forehead thermometer of this application is removed, the heat-conducting block will quickly exchange heat with the external environment, thereby rapidly synchronizing the temperature of the heat-conducting block with the temperature of the external environment. Then, after the temperature sensor detects the temperature of the heat-conducting block, the external ambient temperature can be detected quickly and accurately. The detection data is then synchronized to the main control chip as the basis for dynamic compensation value of forehead temperature measurement data. This allows the forehead thermometer to restore measurement accuracy after a short period of adaptation in different external ambient temperatures, meeting the requirement of being usable shortly after power-on.

[0019] Meanwhile, by designing the heat-conducting block in two separate parts, it is easier to fill the space between the heat-conducting block and the infrared probe or temperature sensor with thermal grease. When the infrared probe or temperature sensor is damaged, the heat-conducting block can be easily removed for replacement. After replacement, when tightening the heat-conducting block, the thermal grease is squeezed from the end of the first and second parts with the smaller diameter, so it is less likely to overflow from the end of the heat-conducting block where the infrared probe is installed and interfere with the detection of the infrared probe. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of this application.

[0021] Figure 2 This is a cross-sectional schematic diagram of the second shell of this application, showing the first segment.

[0022] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0023] Figure 4 This is a three-dimensional structural diagram of the support structure in this application.

[0024] Figure 5 This is an exploded view of the support structure in this application.

[0025] Those skilled in the art will understand that the elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be enlarged relative to other elements to aid in understanding the embodiments of the invention.

[0026] Reference numerals: 1. First housing; 11. Power supply; 12. Second electrode plate; 2. Second housing; 21. Heat conduction channel; 3. Heat conduction block; 31. First segment; 32. Second segment; 33. First mounting groove; 34. Second mounting groove; 35. Fixing groove; 36. Fixing block; 37. Wire groove; 4. Infrared probe; 41. Push block; 5. Bracket; 51. Mounting ring; 52. Support plate; 6. Connecting groove; 7. Lens frame; 71. Sealing ring; 8. Temperature sensor; 9. First electrode plate. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0028] This application discloses an infrared forehead thermometer and its data processing method, referring to... Figure 1 It includes a first housing 1, a second housing 2, a main control chip, a power supply 11, and an infrared sensor 4.

[0029] The first housing 1 is shaped like a handle. The main control chip and the power supply 11 are both fixedly installed inside the first housing 1. The power supply 11 includes a power supply 11 compartment, which is electrically connected to the main control chip. A battery is installed in the power supply 11 compartment to power the main control chip.

[0030] Reference Figure 1 , Figure 2 and Figure 3 The second housing 2 is detachably installed at one end of the first housing 1. The second housing 2 is frustoconical. The end of the second housing 2 with a larger area is connected to the first housing 1. The end of the second housing 2 with a smaller area is coaxially provided with a detection hole. The infrared probe 4 is located inside the second housing 2. The detection end of the infrared probe 4 collects and detects infrared radiation of a fixed frequency band from the outside through the detection hole. In this application, the infrared radiation of a specific frequency band emitted by the forehead of the human body is detected.

[0031] Reference Figure 1 , Figure 2 and Figure 3 The axis of the second housing 2 is set at an angle to the length direction of the first housing 1 to facilitate measurement. The second housing 2 is installed in a traditional snap-fit ​​structure, which can be selected by those skilled in the art according to the actual situation.

[0032] Reference Figure 1 , Figure 2 and Figure 3 The second housing 2 is provided with a heat-conducting block 3 made of a material with high thermal conductivity, which is copper in this embodiment. The heat-conducting block 3 includes a first block 31 and a second block 32 made of copper. The first block 31 and the second block 32 can be assembled together. One end of the assembled first block 31 and the second block 32 is frustum-shaped, and the other end is cylindrical.

[0033] Reference Figure 1 , Figure 2 and Figure 3The first segment 31 and the second segment 32 are provided with the same first mounting groove 33 and several second mounting grooves 34 on their splicing surfaces. The cross-section of the first mounting groove 33 is arc-shaped and coaxial with the axis of the first segment 31. In this embodiment, there are two second mounting grooves 34. The second mounting grooves 34 are symmetrically distributed with the axis of the first segment 31 as the center. One end of the first mounting groove 33 passes through the end of the first segment 31 with a smaller area, and the second mounting groove 34 passes through the end of the first segment 31 with a larger area.

[0034] Reference Figure 3 , Figure 4 and Figure 5 The mating surfaces of the first block 31 and the second block 32 are also integrally provided with the same fixing block 36, and the mating surfaces of the first block 31 and the second block 32 are also provided with the same fixing groove 35, which is interlocked with the fixing block 36. The fixing block 36 and the fixing groove 35 of the first block 31 are symmetrically distributed about the axis of the first block 31.

[0035] Reference Figure 3 , Figure 4 and Figure 5 When the first block 31 and the second block 32 are assembled together, the fixing block 36 of the first block 31 is engaged and embedded in the fixing groove 35 of the second block 32, and the fixing block 36 of the second block 32 is engaged and embedded in the fixing groove 35 of the first block 31. At the same time, the first mounting grooves 33 of the first block 31 and the second block 32 are assembled together, and the second mounting grooves 34 of the first block 31 and the second block 32 are assembled together.

[0036] Reference Figure 3 , Figure 4 and Figure 5 The first mounting groove 33, formed by the mutual splicing, is defined as the first mounting hole, and the second mounting groove 34, formed by the mutual splicing, is defined as the second mounting hole. The first mounting hole is conical and is fitted with the infrared probe 4. The infrared probe 4 is installed in the first mounting hole, and when the infrared probe 4 is installed in the first mounting hole, the detection end of the infrared probe 4 protrudes from the first mounting hole. A temperature sensor 8 is embedded in the second mounting hole. Thermally conductive silicone grease is filled between the hole wall of the second mounting hole and the side wall of the temperature sensor 8. Thermally conductive silicone grease is also filled between the hole wall of the first mounting hole and the side wall of the infrared probe 4. The thermally conductive silicone grease improves the thermal conductivity between the infrared probe 4 and the heat-conducting block 3, and also improves the thermal conductivity between the temperature sensor 8 and the heat-conducting block 3.

[0037] Reference Figure 3 , Figure 4 and Figure 5Both the first segment 31 and the second segment 32 have wire grooves 37 on their mating surfaces. One end of the guide groove is connected to the first mounting groove 33, and the other end of the wire groove 37 passes through the end with the larger end area of ​​the first segment 31 or the second segment 32. When the first segment 31 and the second segment 32 are mated together, the two wire grooves 37 are mated together to form a wire hole, through which the power supply line 11 of the infrared probe 4 passes.

[0038] Reference Figure 3 , Figure 4 and Figure 5 The second housing 2 is provided with a bracket 5 for mounting the heat-conducting block 3. The bracket 5 includes a connecting ring and several support plates 52. In this embodiment, four support plates 52 are used. The connecting ring is coaxially and integrally mounted in the second housing 2 through a connecting rod. The support plates 52 are arc-shaped, and one end of the support plate 52 is integrally connected to the end face of the connecting ring. The support plates 52 are circumferentially distributed around the axis of the connecting ring.

[0039] Reference Figure 3 , Figure 4 and Figure 5 The support plate 52 is made of elastic material, and the inner wall of the connecting ring is provided with internal threads. The space formed by the four support plates 52 is used to accommodate one end of the heat-conducting block 3 in a frustum shape, and the connecting ring is used to accommodate one end of the heat-conducting block 3 in a cylindrical shape.

[0040] Reference Figure 3 , Figure 4 and Figure 5 The cylindrical end of the heat-conducting block 3 has an external thread, which can be threaded with the connecting ring. The space formed by the four support plates 52 is smaller than the volume of the frustum-shaped end of the heat-conducting block 3. When installing the heat-conducting block 3, firstly, apply silicone grease to the first mounting groove 33 of the first segment 31 and the second segment 32. Then, embed the infrared probe 4 and the temperature sensor 8 into the first mounting groove 33 and the second mounting groove 34 of the first segment 31, respectively, and place the power supply 11 wire of the infrared probe 4 into the wire groove 37. Then, assemble the first segment 31 and the second segment 32 together, with the heat-dissipating silicone grease located at the end of the first mounting groove 33 and the second mounting groove 34 facing the smaller end of the heat-conducting block 3.

[0041] Reference Figures 2-5Then, one end of the heat-conducting block 3, after the first segment 31 and the second segment 32 are assembled, is inserted through the connecting ring into the space enclosed by the support plate 52. As the heat-conducting block 3 is pushed forward, the support plate 52 pushes the first segment 31 and the second segment 32 to fit together and press tightly. This causes the silicone grease in the first mounting groove 33 and the second mounting groove 34 to be squeezed and spread along the direction towards the end with the larger area of ​​the heat-conducting block 3. As the heat-conducting block 3 is tightened and fixed, the support plate 52 fits and presses against the frustum-shaped end of the heat-conducting block 3 to fix the heat-conducting block 3. Since the thermal silicone grease spreads along the direction away from the detection end of the infrared probe 4, it is not easy for the thermal silicone grease to spread to the detection end of the infrared probe 4. Therefore, the detection accuracy of the detection end of the infrared probe 4 after installation is not easily reduced due to the thermal silicone grease spreading to the infrared probe 4.

[0042] Reference Figures 2-5 Furthermore, after the support plate 52 abuts against the first block 31 and the second block 32, the abutting force of the support plate 52 provides an anti-loosening warning force for the threaded connection between the heat-conducting block 3 and the connecting ring, making the heat-conducting block 3 less prone to loosening.

[0043] Reference Figures 3-5 A cuboid pusher block 41 is fixedly mounted on one end of the power supply line 11 of the infrared probe 4. A first electrode plate 9 is fixedly mounted on the pusher block 41, and the first electrode plate 9 is electrically connected to the power supply line 11 of the infrared probe 4. Connecting grooves 6 are provided at the ends of the first segment 31 and the second segment 32, and the two ends of the pusher block 41 are respectively embedded in the two connecting grooves 6. When the heat-conducting block 3 is rotatably mounted onto the connecting ring, the first segment 31 and the second segment 32 can be rotated synchronously and relatively easily through the pusher block 41. During rotation, a synchronous axial force is applied to the first segment 31 and the second segment 32, making it difficult for the second segment 32 to separate during the initial threaded connection with the connecting ring, thus simplifying the threaded connection between the heat-conducting block 3 and the connecting ring.

[0044] One end of the temperature sensor 8 is also fixedly mounted with a first electrode plate 9. The first electrode plates 9 of the temperature sensor 8 and the infrared probe 4 are both located outside the heat-conducting block 3. The first housing 1 has three connection holes, and a second electrode plate 12 is fixedly installed in each of the three connection holes. The second electrode plate 12 is electrically connected to the main control chip. When the second housing 2 is installed on the first housing 1, the three first electrode plates 9 are respectively inserted into the three connection holes and abut against the three second electrode plates 12 respectively to complete the power supply to the temperature sensor 8 and the infrared probe 4.

[0045] The second housing 2 is provided with several heat conduction channels 21, each of which is divided into two parts. The two parts of the heat conduction channels 21 are used to connect the first block 31 or the second block 32 to the outside world, so that the first block 31 or the second block 32 can have a relatively quick thermal interaction with the outside world.

[0046] Because the infrared probe 4 is embedded in the heat-conducting block 3 made of copper, the heat generated by the infrared probe 4 during operation is "absorbed" by the heat-conducting block 3. This makes the infrared probe 4 less susceptible to interference from its own heat generation, thus improving the measurement accuracy of the infrared probe 4. At the same time, because a temperature sensor 8 is embedded in the heat-conducting block 3, the temperature of the heat-conducting block 3 is detected by the temperature sensor 8, and the external temperature is synchronized with the heat-conducting block 3, making the detection speed of the temperature sensor 8 faster and more accurate.

[0047] When the thermal grease in the heat-conducting block 3 needs to be replaced, or when the temperature sensor 8 or the infrared probe 4 needs to be replaced, the second housing 2 can be directly removed from the first housing 1, and the three first electrode plates 9 can be pulled out from the three connecting holes to complete the disassembly of the second housing 2. Then, the heat-conducting block 3 can be easily removed by loosening it. Then, the first segment 31 and the second segment 32 can be separated, and the infrared probe 4 and the temperature sensor 8 can be taken out for maintenance. At the same time, since one end of the first mounting groove 33 and the second mounting groove 34 are both through ends, when cleaning the thermal grease, the thermal grease can be scraped off along the opening end of the first mounting groove 33 or the second mounting groove 34, making cleaning relatively convenient.

[0048] A lens frame 7 is coaxially mounted at one end of the heat-conducting block 3 where the infrared probe 4 is installed. The lens frame 7 is ring-shaped, and a circular lens is coaxially fixed at one end of the lens frame 7. The lens is used to protect the infrared probe 4 and filter out infrared radiation of unwanted frequency bands. The lens is also used to focus the infrared radiation of the frequency band that needs to be detected.

[0049] The infrared probe 4 extends out of the heat-conducting block 3 and is embedded in the lens frame 7. A sealing ring 71 is provided at the junction of the lens frame 7, the infrared probe 4 and the heat-conducting block 3. The sealing ring 71 abuts against the side wall of the lens frame 7, the side wall of the infrared probe 4 and the end face of the heat-conducting block 3 respectively. The outer side wall of the lens frame 7 is flush with the outer side wall of the heat-conducting block 3 and extends along the outer side wall of the heat-conducting block 3. The outer side wall of the lens frame 7 abuts against the support plate 52.

[0050] The infrared sensor 4 is protected by the frame 7 and the lens, while the sealing ring 71 further blocks any thermal grease that may overflow from the first block 31 and the second block 32.

[0051] Furthermore, the cooperation between the support plate 52 and the sealing ring 71 further stabilizes the installation of the eyeglass frame 7.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An infrared forehead thermometer, characterized in that: The device includes a first housing (1), a second housing (2), a main control chip, a power supply (11), and an infrared probe (4). The main control chip and the power supply (11) are installed in the first housing (1), and the second housing (2) is installed in the first housing (1). The infrared probe (4) is located in the first housing (1) and is used to detect infrared radiation from the forehead. The infrared probe (4) is electrically connected to the main control chip. The power supply (11) is used to supply power to the main control chip. The second housing (2) is provided with a heat-conducting block (3) made of a material with a high thermal conductivity. A temperature sensor (8) is embedded in the heat-conducting block (3). The temperature sensor (8) is electrically connected to the main control chip. The heat-conducting block (3) is in contact with the outside world. The temperature sensor (8) is used to detect the temperature of the heat-conducting block (3).

2. The infrared forehead thermometer according to claim 1, characterized in that: The heat-conducting block (3) has a first mounting hole, and the infrared probe (4) is located in the first mounting hole. The infrared probe (4) and the heat-conducting block (3) are connected by thermal conduction.

3. An infrared forehead thermometer according to claim 2, characterized in that: The heat-conducting block (3) has a second mounting hole for mounting a temperature sensor (8). The heat-conducting block (3) includes a first segment (31) and a second segment (32). The first segment (31) and the second segment (32) can be assembled together. The assembly surfaces of the first segment (31) and the second segment (32) are provided with a first mounting groove (33) and a second mounting groove (34). When the first segment (31) and the second segment (32) are assembled together, the first mounting groove (33) is assembled together to form the first mounting hole, and the second mounting groove (34) is assembled together to form the second mounting hole. The second housing (2) is provided with a bracket (5) for mounting the heat-conducting block (3). The second housing (2) is provided with a plurality of heat-conducting channels (21). The heat-conducting channels (21) are divided into two parts. The heat-conducting channels (21) of the two parts are respectively used to connect the outside to the first segment or the outside to the second segment (32).

4. An infrared forehead thermometer according to claim 3, characterized in that: The bracket (5) includes a mounting ring (51) and several support plates (52). The outer wall of the mounting ring (51) is connected to the inner wall of the second housing (2). The support plates (52) are circumferentially spaced around the axis of the mounting ring (51) on the end face of the mounting ring (51). The space enclosed by the support plates (52) is frustum-shaped. One end of the first segment (31) and the second segment (32) after being assembled together are fitted into the space enclosed by the support plates (52). The ends of the first segment (31) and the second segment (32) away from the space enclosed by the support plates (52) are assembled together and located in the mounting ring (51) and threadedly connected to the mounting ring (51). The heat conduction channel (21) is connected to the support plate (52) through a gap.

5. An infrared forehead thermometer according to claim 4, characterized in that: The support plate (52) is made of elastic material. Under normal conditions, the space enclosed by the support plate (52) is smaller than the volume of one end of the frustum-shaped structure after the first segment (31) and the second segment (32) are assembled. When one end of the first segment (31) and the second segment (32) are fitted into the space enclosed by the support plate (52), the support plate (52) is opened and the support plate (52) is pressed against the side wall of the frustum-shaped end after the first segment (31) and the second segment (32) are assembled.

6. An infrared forehead thermometer according to claim 4, characterized in that: The infrared probe (4) has a push block (41) at its end. The ends of the first block (31) and the second block (32) are provided with connecting grooves (6). The two ends of the push block (41) are respectively embedded in the two connecting grooves (6).

7. An infrared forehead thermometer according to claim 3, characterized in that: The first block (31) and the second block (32) are joined together on one side, and the first block (31) and the second block (32) are joined together on the other side, and the fixed block (36) is provided. The fixed groove (35) and the fixed block (36) are fitted together. The fixed groove (35) and the fixed block (36) are symmetrically distributed relative to the axis of the first block (31) or the second block (32). When the first block (31) and the second block (32) are joined together, the fixed block (36) of the first block (31) is fitted into the fixed groove (35) of the second block (32), and the fixed block (36) of the second block (32) is fitted into the fixed groove (35) of the first block (31).

8. An infrared forehead thermometer according to claim 4, characterized in that: Both the infrared probe (4) and the temperature sensor (8) have a first electrode plate (9) at one end. The first electrode plate (9) is located outside the heat-conducting block (3). The first electrode plate (9) is used to power the infrared probe (4) or the temperature sensor (8) after connecting to the power supply (11). The second housing (2) is detachably disposed on the first housing (1). The first housing (1) is provided with a plurality of second electrode plates (12). The second electrode plates (12) correspond one-to-one with the first electrode plates (9). When the second housing (2) is disposed on the first housing (1), the first electrode plates (9) are pressed against the second electrode plates (12) one-to-one.

9. An infrared forehead thermometer according to claim 3, characterized in that: The main body of the infrared probe (4) is truncated cone-shaped, and the diameter of the signal receiving end of the main body of the infrared probe (4) is smaller than the signal output end of the main body of the infrared probe (4).

10. An infrared forehead thermometer according to claim 3, characterized in that: A lens frame (7) is coaxially mounted at the smaller diameter end of the heat-conducting block (3). The lens frame (7) is annular, and a lens is mounted at one end of the lens frame (7). The lens is used to protect the infrared probe (4) and filter out infrared radiation of unwanted frequency bands. The lens is also used to focus the infrared radiation of the frequency band to be detected. The end face of the other end of the lens frame (7) is in contact with the end face of the smaller diameter of the heat-conducting block (3). One end of the infrared probe (4) extends out of the heat-conducting block (3). One end of the heat-conducting block (3) is embedded in the frame (7). A sealing ring (71) is provided at the junction of the frame (7), the infrared probe (4) and the heat-conducting block (3). The sealing ring (71) abuts against the side wall of the frame (7), the side wall of the infrared probe (4) and the end face of the heat-conducting block (3). The outer side wall of the frame (7) is flush with the outer side wall of the heat-conducting block (3) and extends along the outer side wall of the heat-conducting block (3). The outer side wall of the frame (7) abuts against the support plate (52).

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