Multifunctional infrared thermal imaging instrument for fire fighting

Abstract

This invention relates to the field of fire-fighting equipment technology and discloses a multifunctional integrated infrared thermal imager for fire-fighting. The thermal imager integrates multiple functions such as infrared thermal imaging, visible light imaging, laser ranging, and environmental monitoring. Initially sealed, the imager is mechanically opened via a manual button mechanism on the handle to allow ventilation through the intake and exhaust sealing flaps. Upon startup, the airflow from the fan works in conjunction with the control mechanism to maintain the stable opening of the heat dissipation channels. When the equipment encounters water or air intake is obstructed, the system automatically triggers a reset spring and gear transmission mechanism to simultaneously and quickly close all sealing flaps, restoring the equipment to a fully sealed state. This ensures efficient heat dissipation while providing active waterproofing and dustproof protection for internal precision components, significantly improving reliability and service life in complex and harsh fire-fighting environments.

Description

Technical Field

[0001] This invention relates to the field of fire protection equipment technology, and in particular to a multifunctional integrated infrared thermal imager for fire protection. Background Technology

[0002] Infrared thermal imagers play a crucial role in fire rescue, helping firefighters quickly locate fire sources, trapped individuals, and assess the fire situation in harsh environments such as dense smoke and darkness; however, existing infrared thermal imagers still have some technical problems in practical use.

[0003] First, the electronic components inside infrared thermal imagers are prone to overheating during prolonged operation or in high-temperature environments. If heat dissipation is not timely, it may lead to decreased equipment performance, shortened lifespan, or even malfunction. Traditional heat dissipation methods often use forced cooling fans, but these systems are often constantly on or have simple temperature control. In the complex and variable environment of a fire scene, such as high humidity, water mist, or even direct contact with water, the cooling ducts are prone to water ingress or the intake of large amounts of moisture, causing internal electronic components to become damp and damaged, or dust and particulate matter to clog the ducts, affecting heat dissipation efficiency.

[0004] Secondly, the environmental conditions at fire and rescue sites are extremely harsh, including high temperature, high humidity, dense smoke, dust, and possible water splashes. Existing infrared thermal imagers often cannot effectively prevent harmful external substances from entering the equipment while dissipating heat, which greatly reduces the reliability and service life of the equipment. When the heat dissipation duct is blocked or water enters, the equipment may not work properly or may even fail completely, posing a serious safety hazard to fire and rescue operations.

[0005] Therefore, how to design a fire-fighting infrared thermal imager that can ensure efficient heat dissipation while effectively coping with complex and harsh environments, especially one that can adaptively prevent water and dust from entering the equipment, thereby improving the reliability and service life of the equipment, is a problem that urgently needs to be solved in the current technical field. Summary of the Invention

[0006] The purpose of this invention is to solve the technical problem that existing infrared thermal imagers for fire protection are unable to effectively prevent external harmful substances such as water and dust from entering the equipment during the heat dissipation process, resulting in poor equipment reliability and short service life.

[0007] To achieve the above objectives, this application adopts the following technical solution: a multi-functional fusion infrared thermal imager for fire fighting, comprising a housing, electronic components disposed inside the housing, and a heat dissipation system for cooling the electronic components; the heat dissipation system includes an air inlet and an air outlet on the housing, an air intake control mechanism disposed at the air inlet, an exhaust control mechanism disposed at the air outlet, and a fan for driving airflow from the air inlet through the electronic components and then exhausting it from the air outlet; the air intake control mechanism includes an air intake cylinder and an air intake sealing flap rotatably disposed within the air intake cylinder; the exhaust control mechanism includes an exhaust cylinder and an exhaust sealing flap rotatably disposed within the exhaust cylinder, and a fan disposed inside the exhaust cylinder; the heat dissipation system further includes a control mechanism, which includes: an air duct assembly, comprising a connecting cylinder connected to the bottom of the exhaust cylinder and internally connected, and a connecting cylinder coaxially disposed within the connecting cylinder. The system includes an inner sleeve inside the cylinder, the inner diameter of which is smaller than that of the connecting cylinder; a baffle movably disposed within the air duct assembly along the axial direction, the diameter of which is smaller than that of the inner sleeve; a return spring acting on the baffle to provide a return force that moves the baffle in the closing direction; the cooling system also includes an opening mechanism configured to: accept external operation and output mechanical force to drive the inlet sealing flap and the exhaust sealing flap to open over initial sealing resistance; a control mechanism configured to: when the opening mechanism opens the inlet sealing flap and the exhaust sealing flap and the air inlet is unobstructed, the airflow generated by the fan keeps the baffle in the open position and causes the flap to remain open for heat dissipation; when the air inlet is obstructed, resulting in insufficient airflow, the return spring drives the baffle to return downward and simultaneously drives the inlet sealing flap and the exhaust sealing flap to close to seal the air inlet and outlet.

[0008] Preferably, the control mechanism further includes a transmission mechanism, which includes a third gear fixedly connected to the intake sealing flap shaft, a first gear fixedly connected to the exhaust sealing flap shaft, and a linkage rod connected to the bottom of the baffle. The linkage rod is provided with teeth that mesh with the first gear and the third gear, for converting the axial linear motion of the baffle into the rotational motion of the intake sealing flap and the exhaust sealing flap.

[0009] Preferably, the transmission mechanism further includes a second gear disposed between adjacent first gears for transmission, and a fourth gear disposed between adjacent third gears for transmission, wherein the second gear and the fourth gear are rotatably connected to the outer walls of the exhaust pipe and the intake pipe, respectively.

[0010] Preferably, a replaceable absorbent sponge is provided at the bottom of the air intake. The absorbent sponge expands after absorbing moisture to block or significantly reduce the airflow path of the air intake.

[0011] Preferably, both the connecting cylinder and the inner sleeve are provided with limiting mesh to restrict the movement of the baffle within the air duct assembly.

[0012] Preferably, the electronic components include an infrared thermal imaging module, a visible light imaging module, and a laser ranging module disposed inside the housing.

[0013] Preferably, a gas concentration detection component and a wind speed detection component are respectively provided on the top and side of the housing.

[0014] Preferably, a handle is provided at the bottom of the outer casing, and a battery is provided inside the lower part of the handle. The opening mechanism includes a button provided on the handle, a pressing block that is linked to the button and slidably connected to the handle, and a pressure block that is slidably connected to the handle and connected to the linkage rod via a connecting rod. The bottom of the pressure block and the top of the pressing block are in inclined contact. Pressing the button drives the pressing block to move laterally, and the inclined surface causes the pressure block to move upward, thereby pushing the linkage rod through the connecting rod to assist in opening the intake sealing flap and the exhaust sealing flap.

[0015] Preferably, the outer casing is provided with a rear panel and a front control panel, respectively. The front control panel integrates a display screen, and the rear panel is provided with an infrared thermal imaging window, a laser and visible light composite window, and a multi-sensor integrated window.

[0016] Preferably, the return spring is a compression spring, with its two ends abutting against the bottom of the baffle and the fixed structure inside the outer shell, respectively.

[0017] The technical effects and advantages of this invention are as follows: This invention utilizes an opening mechanism composed of a button, a squeezing block, and a pressure block mounted on the handle. This mechanism provides initial mechanical unlocking force for the completely sealed flaps. After activation, the airflow generated by the fan works in conjunction with the baffles and springs in the control mechanism to automatically maintain the open state of the heat dissipation channels using airflow power. When the equipment encounters splashing water, high humidity, or blockage, the sponge absorbs water and expands, blocking the air intake and causing a change in air pressure. Under the action of the return spring, the baffles are reset, and all sealed flaps are closed synchronously and quickly through a gear and rack mechanism, instantly returning the equipment to a sealed state. This design upgrades traditional passive protection to intelligent active protection, ensuring efficient heat dissipation while completely eliminating the risk of water and dust intrusion damaging internal precision sensors and electronic components. This significantly improves the practical effectiveness and service life of firefighting equipment in complex fire environments. Attached Figure Description

[0018] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the air inlet structure of the present invention; Figure 3This is an exploded view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the exhaust control mechanism and intake control mechanism of the present invention; Figure 5 This is a front view of the exhaust control mechanism and intake control mechanism of the present invention. Figure 6 This is a cross-sectional view of the exhaust control mechanism of the present invention; Figure 7 This is a cross-sectional view of the intake control mechanism of the present invention.

[0020] Legend: 1. Outer shell; 101. Air outlet; 102. Air inlet; 2. Handle; 201. Button; 202. Squeezing block; 203. Pressure block; 3. Battery; 4. Rear panel; 401. Infrared thermal imaging window; 402. Laser and visible light composite window; 403. Multi-sensor integrated window; 5. Front control panel; 6. Wind speed detection component; 7. Gas concentration detection component; 8. Exhaust control mechanism; 801. Exhaust pipe; 802. Exhaust sealing flap; 803. First gear; 804. Second gear; 805. Connecting cylinder; 806. Inner sleeve; 807. Baffle; 808. Return spring; 809. Linkage rod; 810. Limiting net; 9. Intake control mechanism; 901. Intake pipe; 902. Intake sealing flap; 903. Third gear; 904. Fourth gear; 905. Absorbent sponge; 10. Fan. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0022] Please see Figures 1 to 7 The present invention provides a multifunctional integrated infrared thermal imager for fire fighting, which includes a housing 1, electronic components disposed inside the housing 1, and a heat dissipation system for dissipating heat from the electronic components; the electronic components may include infrared thermal imaging modules, visible light imaging modules, and laser ranging modules, etc. These modules generate heat during operation and need to be dissipated in a timely manner to ensure the stable operation of the equipment.

[0023] Example 1: The heat dissipation system includes an air inlet 102 and an air outlet 101 on the outer casing 1, an air intake control mechanism 9 disposed at the air inlet 102, an exhaust control mechanism 8 disposed at the air outlet 101, and a fan 10 for driving airflow from the air inlet 102 through the electronic components and then out of the air outlet 101; the fan 10 is usually an axial fan or a centrifugal fan, and its function is to generate airflow to carry away the heat inside the device.

[0024] The air intake control mechanism 9 includes an air intake cylinder 901 and an air intake sealing flap 902 rotatably disposed inside the air intake cylinder 901. The air intake cylinder 901 is connected to the air inlet 102 on the outer casing 1. The air intake sealing flap 902 is installed inside the air intake cylinder 901 via a rotating shaft and can rotate around the rotating shaft to control the opening and closing of the air inlet 102. When the air intake sealing flap 902 is in the closed state, it can effectively seal the air inlet 102 and prevent external substances from entering.

[0025] The exhaust control mechanism 8 includes an exhaust pipe 801 and an exhaust sealing flap 802 rotatably disposed inside the exhaust pipe 801. The exhaust pipe 801 is connected to the air outlet 101 on the outer casing 1. The exhaust sealing flap 802 is installed inside the exhaust pipe 801 via a rotating shaft and can rotate around the rotating shaft to control the opening and closing of the air outlet 101. The fan 10 is preferably disposed inside the exhaust pipe 801, below the exhaust sealing flap 802, so that the negative pressure generated by the fan 10 can directly act on the entire heat dissipation air duct.

[0026] The heat dissipation system also includes a control mechanism for shutting down the heat dissipation system. The control mechanism includes an air duct assembly, which includes a connecting cylinder 805 connected to the bottom of the exhaust pipe 801 and internally connected, and an inner sleeve 806 coaxially disposed inside the connecting cylinder 805. The inner diameter of the connecting cylinder 805 is larger than the inner diameter of the inner sleeve 806, forming a stepped internal space. The inner diameter of the inner sleeve 806 is smaller than the inner diameter of the connecting cylinder 805, so that when the baffle 807 moves inside the inner sleeve 806, it can form a certain gap with the inner wall of the inner sleeve 806, and when it moves inside the connecting cylinder 805, it can provide a larger airflow passage space.

[0027] A baffle 807 is movably disposed within the air duct assembly along the axial direction; the diameter of the baffle 807 is smaller than the inner diameter of the inner sleeve 806, ensuring that the baffle 807 can move smoothly within the inner sleeve 806; the direction of movement of the baffle 807 is consistent with the direction of airflow generated by the fan 10.

[0028] A return spring 808 acts on the baffle 807 to provide a return force that moves the baffle 807 in the closing direction. The return spring 808 is preferably a compression spring, with one end abutting against the bottom of the baffle 807 and the other end abutting against a fixed structure inside the housing 1, such as the bottom plate or bracket inside the housing 1. When the fan 10 is not started or the airflow is insufficient, the force of the return spring 808 pushes the baffle 807 to its initial closed position.

[0029] The control mechanism is configured such that when the fan 10 is started and the air inlet 102 is unobstructed, the airflow generated by the fan 10 will create a negative pressure inside the exhaust pipe 801, the connecting pipe 805 and the inner sleeve 806; a large annular channel is formed between the baffle 807 and the inner wall of the connecting pipe 805, thereby providing sufficient space for airflow.

[0030] When the air inlet 102 is obstructed, resulting in insufficient airflow power, such as when the air inlet 102 is blocked by foreign objects, or when the absorbent sponge 905 described in a later embodiment absorbs water and expands, obstructing the airflow, the airflow power generated by the fan 10 is insufficient to overcome the elastic force of the return spring 808. At this time, the return spring 808 will drive the baffle 807 to return downward, and the baffle 807 will move to the bottom of the inner sleeve 806, or even completely block the channel of the inner sleeve 806. The downward return of the baffle 807 will simultaneously drive the air inlet sealing flap 902 and the exhaust sealing flap 802 to close, so as to seal the air inlet 102 and the air outlet 101. In this way, even if the fan 10 is still running, since the air inlet and outlet are sealed, external water, dust and other harmful substances cannot enter the inside of the equipment, thereby protecting the internal electronic components.

[0031] Example 2: Based on Example 1, in order to achieve synchronous linkage between the baffle 807 and the intake sealing flap 902 and the exhaust sealing flap 802, the control mechanism also includes a transmission mechanism; the transmission mechanism includes a third gear 903 fixedly connected to the rotating shaft of the intake sealing flap 902, a first gear 803 fixedly connected to the rotating shaft of the exhaust sealing flap 802, and a linkage rod 809 connected to the bottom of the baffle 807; the linkage rod 809 is provided with teeth that mesh with the first gear 803 and the third gear 903, for converting the axial linear motion of the baffle 807 into the rotational motion of the intake sealing flap 902 and the exhaust sealing flap 802.

[0032] Specifically, the teeth on the linkage rod 809 mesh with the first gear 803 and the third gear 903, converting the linear motion of the linkage rod 809 into the rotational motion of the first gear 803 and the third gear 903. Since the first gear 803 is fixedly connected to the rotating shaft of the exhaust sealing flap 802 and the third gear 903 is fixedly connected to the rotating shaft of the intake sealing flap 902, the exhaust sealing flap 802 and the intake sealing flap 902 will rotate synchronously and open. Conversely, when the return spring 808 drives the baffle 807 to return downward, the linkage rod 809 also moves downward, and through the meshing of the teeth, drives the first gear 803 and the third gear 903 to rotate in opposite directions, thereby causing the exhaust sealing flap 802 and the intake sealing flap 902 to close synchronously.

[0033] To further optimize the transmission effect and structural compactness, the transmission mechanism may also include a second gear 804 disposed between adjacent first gears 803 for transmission, and a fourth gear 904 disposed between adjacent third gears 903 for transmission; the second gear 804 and the fourth gear 904 are rotatably connected to the outer walls of the exhaust pipe 801 and the intake pipe 901, respectively; this design can make the transmission smoother and more reliable, and the gear ratio can be adjusted according to actual needs to precisely control the opening and closing angle of the flap.

[0034] Example 3: Based on Example 1 or Example 2, in order to further enhance the waterproof and dustproof capabilities of the equipment, a replaceable water-absorbing sponge 905 is provided at the bottom of the inside of the air inlet 901; the water-absorbing sponge 905 will expand after absorbing moisture, thereby blocking or significantly reducing the airflow passage of the air inlet 102.

[0035] Its working principle is as follows: When the fire-fighting infrared thermal imager is used in a humid environment or in a scenario with water splashing, external moisture will enter the air intake cylinder 901 through the air inlet 102 and be absorbed by the water-absorbing sponge 905. As the water-absorbing sponge 905 becomes saturated with water and expands, its volume increases, gradually blocking the airflow channel inside the air intake cylinder 901. When the airflow channel is significantly obstructed, the airflow power generated by the fan 10 will weaken and be insufficient to overcome the elastic force of the return spring 808, thereby triggering the aforementioned adaptive shut-off mechanism: the baffle 807 resets downwards, and the air intake sealing flap 902 and the exhaust sealing flap 802 are closed in conjunction. In this way, even in extreme humid or water-ingress conditions, the equipment can automatically protect itself and avoid damage to internal electronic components. The water-absorbing sponge 905 adopts a replaceable design, which is convenient for users to replace it after it becomes saturated with water to restore the normal heat dissipation function of the equipment.

[0036] In addition, to limit the movement of the baffle 807 within the air duct assembly, both the connecting cylinder 805 and the inner sleeve 806 are equipped with limiting nets 810. The limiting nets 810 prevent the baffle 807 from moving too far, ensuring that it moves within a preset range, thereby guaranteeing the normal operation of the transmission mechanism and the accurate opening and closing of the sealing flap.

[0037] Example 4: Based on any of the above embodiments, the present invention is a multifunctional integrated infrared thermal imager for fire fighting, which integrates multiple functional modules; in addition to the components related to the heat dissipation system, the electronic components also include an infrared thermal imaging module, a visible light imaging module and a laser ranging module disposed inside the housing 1.

[0038] The infrared thermal imaging module detects the infrared radiation emitted by objects, generating thermal images to help firefighters "see" the fire source and trapped people in dense smoke. The visible light imaging module provides conventional visible light images as a supplement to the infrared images, facilitating the identification of environmental details by firefighters. The laser ranging module measures the distance to targets, providing firefighters with precise distance information to aid in decision-making. The integration of these modules enables this invention to provide firefighters with more comprehensive and accurate on-site information.

[0039] Example 5: Based on any of the above embodiments, in order to further improve the practicality and information acquisition capability of the device, the top and sides of the outer casing 1 may be respectively provided with a gas concentration detection component 7 and a wind speed detection component 6.

[0040] The gas concentration detection component 7 can monitor the concentration of harmful gases at the fire scene in real time, such as carbon monoxide and hydrogen sulfide, alerting firefighters to safety precautions. The wind speed detection component 6 can measure the wind speed at the scene, helping firefighters assess the direction and speed of fire spread and providing a basis for firefighting strategies. The integration of these additional components makes this invention not just a thermal imager, but a comprehensive environmental monitoring tool.

[0041] Example 6: Based on any of the above embodiments, in order to facilitate firefighters' handheld operation and power supply, a handle 2 is provided at the bottom of the outer shell 1, and a battery 3 is provided inside the lower part of the handle 2; the battery 3 provides power to the device, and the handle 2 facilitates firefighters' long-term handheld use at the rescue site. A button 201 is provided on the handle 2, and a pressing block 202 is slidably connected to the handle 2 laterally. A pressure block 203 is slidably connected to the inside of the handle 2 longitudinally. The pressure block 203 is connected to the linkage rod 809 through a connecting rod. There is an inclined surface between the bottom of the pressure block 203 and the top of the pressing block 202. The lateral movement of the pressing block 202 causes the pressure block 203 to move upward, which is used to cause the linkage rod 809 to assist in opening the air intake sealing flap 902 and the exhaust sealing flap 802.

[0042] Furthermore, a rear panel 4 and a front control panel 5 are respectively provided on the front and back of the outer casing 1. The front control panel 5 integrates a display screen for displaying infrared images, visible light images, ranging data, gas concentration, wind speed, and other information, and provides an operating interface. The rear panel 4 is provided with an infrared thermal imaging window 401, a laser and visible light composite window 402, and a multi-sensor integrated window 403. The infrared thermal imaging window 401 is used for receiving infrared radiation from the infrared thermal imaging module. The laser and visible light composite window 402 is used for the optical path of the visible light imaging module and the laser ranging module. The multi-sensor integrated window 403 can be used for the installation and data acquisition of other sensors such as the gas concentration detection component 7 and the wind speed detection component 6.

[0043] The working principle of this invention is summarized as follows: This invention dissipates heat from the electronic components inside the outer casing 1 through the exhaust control mechanism 8, the intake control mechanism 9, and the fan 10. Specifically, pressing the button 201 causes the pressing block 202 to drive the pressure block 203 to drive the linkage rod 809, which in turn drives the first gear 803 and the third gear 903 to rotate. This causes the exhaust sealing flap 802 and the intake sealing flap 902 to rotate counterclockwise by 90° and open. After the fan 10 is started, it generates negative pressure inside the lower part of the exhaust pipe 801, inside the connecting cylinder 805, and inside the inner sleeve 806. External air enters the outer casing 1 through the intake cylinder 901, through the gap between the absorbent sponge 905 and the intake sealing flap 902, flows through the electronic components for heat dissipation, and then passes upward through the inner sleeve 806, the connecting cylinder 805, and the exhaust pipe 801, before being discharged through the gap between the exhaust sealing flap 802. This is the normal heat dissipation process of the equipment. When the ambient humidity is too high, or when the equipment is splashed with water or even falls into water, the absorbent sponge 905 will absorb water and expand, hindering the entry of air and obstructing the airflow passage of the air inlet 102. At this time, the continuous operation of the fan 10 will continuously increase the negative pressure inside the outer casing 1, but due to the significant reduction in air intake speed, when the airflow power passing through the inner sleeve 806 is insufficient to resist the reset action of the return spring 808 on the baffle 807, the baffle 807 will reset downwards. During the reset process of the baffle 807, the weak airflow generated... Airflow can still flow through the gap between the inner sleeve 806 and the baffle 807 until the baffle 807 completely falls back. After the baffle 807 falls back, the exhaust sealing flap 802 and the air inlet sealing flap 902 are closed by the linkage rod 809. Then, the fan 10 stops running to prevent water from entering the equipment and causing damage. After the equipment is effectively protected, the water-absorbing sponge 905 inside the air inlet cylinder 901 needs to be replaced to restore its ventilation function before the heat dissipation function can be restarted.

[0044] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A multi-functional fusion infrared thermal imager for firefighting, characterized in that, The device includes a housing, electronic components disposed inside the housing, and a heat dissipation system for dissipating heat from the electronic components. The heat dissipation system includes an air inlet and an air outlet on the housing, an air intake control mechanism disposed at the air inlet, an exhaust control mechanism disposed at the air outlet, and a fan for driving airflow from the air inlet through the electronic components and then out through the air outlet. The air intake control mechanism includes an air intake cylinder and an air intake sealing flap rotatably disposed within the air intake cylinder. The exhaust control mechanism includes an exhaust cylinder and an exhaust sealing flap rotatably disposed within the exhaust cylinder, and the fan is disposed inside the exhaust cylinder. The heat dissipation system further includes a control mechanism, which includes an air duct assembly comprising a connecting cylinder connected to the bottom of the exhaust cylinder and internally communicating with it, and an inner sleeve coaxially disposed inside the connecting cylinder, the inner diameter of the inner sleeve being smaller than the inner diameter of the connecting cylinder. The system includes: a baffle plate movably disposed axially within the air duct assembly, the diameter of which is smaller than the inner diameter of the inner sleeve; a return spring acting on the baffle plate to provide a return force that moves the baffle plate toward the closing direction; the cooling system further includes an opening mechanism configured to: accept external operation and output mechanical force to drive the inlet sealing flap and the exhaust sealing flap to open over initial sealing resistance; the control mechanism is configured to: when the opening mechanism opens the inlet sealing flap and the exhaust sealing flap and the air inlet is unobstructed, the airflow power generated by the fan keeps the baffle plate in the open position and causes the flap to remain open for heat dissipation; when the air inlet is obstructed, resulting in insufficient airflow power, the return spring drives the baffle plate to return downward and simultaneously drives the inlet sealing flap and the exhaust sealing flap to close to seal the air inlet and the air outlet.

2. The multifunctional fusion infrared thermal imager for firefighting according to claim 1, characterized in that: The control mechanism further includes a transmission mechanism, which includes a third gear fixedly connected to the intake sealing flap shaft, a first gear fixedly connected to the exhaust sealing flap shaft, and a linkage rod connected to the bottom of the baffle. The linkage rod is provided with teeth that mesh with the first gear and the third gear, for converting the axial linear motion of the baffle into the rotational motion of the intake sealing flap and the exhaust sealing flap.

3. The multifunctional fusion infrared thermal imager for firefighting according to claim 2, characterized in that: The transmission mechanism further includes a second gear disposed between adjacent first gears for transmission, and a fourth gear disposed between adjacent third gears for transmission. The second gear and the fourth gear are rotatably connected to the outer walls of the exhaust pipe and the intake pipe, respectively.

4. A multifunctional fusion infrared thermal imager for firefighting according to claim 1, characterized in that: The lower part of the air intake cylinder is equipped with a replaceable water-absorbing sponge. After absorbing moisture, the water-absorbing sponge expands to block or significantly reduce the airflow path of the air intake.

5. A multifunctional fusion infrared thermal imager for firefighting according to claim 1, characterized in that: Both the connecting cylinder and the inner sleeve are equipped with limiting nets to restrict the movement of the baffle within the air duct assembly.

6. A multi-functional fusion infrared thermal imager for firefighting according to claim 1, characterized in that: The electronic components include an infrared thermal imaging module, a visible light imaging module, and a laser ranging module disposed inside the housing.

7. A multifunctional fusion infrared thermal imager for firefighting according to claim 1, characterized in that: The top and sides of the casing are respectively equipped with a gas concentration detection component and a wind speed detection component.

8. A multi-functional fusion infrared thermal imager for firefighting according to claim 1, characterized in that: The bottom of the outer casing is provided with a handle, and the battery is located inside the lower part of the handle. The opening mechanism includes a button on the handle, a pressing block that is linked to the button and slidably connected to the handle, and a pressure block that is slidably connected to the handle and connected to the linkage rod via a connecting rod. The bottom of the pressure block and the top of the pressing block are in inclined contact. Pressing the button drives the pressing block to move laterally, and the inclined surface causes the pressure block to move upward, thereby pushing the linkage rod through the connecting rod to assist in opening the intake sealing flap and the exhaust sealing flap.

9. A multifunctional fusion infrared thermal imager for firefighting according to claim 8, characterized in that: The outer casing is provided with a rear panel and a front control panel. The front control panel integrates a display screen, and the rear panel is provided with an infrared thermal imaging window, a laser and visible light composite window, and a multi-sensor integrated window.

10. A multifunctional fusion infrared thermal imager for firefighting according to claim 1, characterized in that: The return spring is a compression spring, with its two ends abutting against the bottom of the baffle and the fixed structure inside the outer shell, respectively.

Images