Firefighter air respirator mask communication sound amplifying device

Abstract

The utility model relates to the technical field of respirators, in particular to a fireman air respirator mask communication sound amplifying device, which comprises a mask main body, a communication sound amplifying device and a communication sound amplifying device, the dual-mode noise reduction microphone is embedded in the nose bridge of the mask main body; the flexible circuit board is mounted on the inner wall of the mask main body and is in signal connection with the dual-mode noise reduction microphone; the sound amplification loudspeaker is mounted at the lower jaw position of the mask main body, and the sound amplification loudspeaker directionally conducts sound through an acoustic flow guide cavity in the sound amplification loudspeaker; the connecting mechanisms are installed on the mask body and used for enabling the mask body to be stably worn on the head, and the number of the connecting mechanisms is at least one set; the alarm mechanism is mounted on the mask body and used for detecting stable fit between the mask body and the face; the magnetic control power supply mechanism is mounted on the mask main body, and the magnetic control power supply mechanism is electrically connected with the flexible circuit board; the noise reduction effect is high, and sound transmission is stable.

Description

Technical Field

[0001] This utility model relates to the technical field of respirators, and in particular to a communication amplification device for a firefighter's air respirator mask. Background Technology

[0002] In high-noise, high-risk operational environments such as firefighting and rescue operations, firefighters must wear self-contained breathing apparatus masks (SCBAs) to ensure respiratory safety. Fire scenes are often accompanied by high-decibel noise (up to 100dB or more) from flames, equipment roaring, and building collapses. Traditional masks often have built-in microphones that are mostly single-mode pickups and lack active noise cancellation, causing voice signals to be drowned out by environmental noise. This makes it difficult for teammates or the command center to hear instructions clearly, and may even lead to delays or dangers due to mishearing. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a communication amplification device for firefighters' air breathing apparatus masks with strong noise reduction effect and stable sound transmission.

[0004] The firefighter's air respirator mask communication amplification device of this utility model includes:

[0005] The main body of the mask is independently and fixedly installed.

[0006] A dual-mode noise-canceling microphone is embedded in the bridge of the nose of the mask body;

[0007] A flexible circuit board is installed on the inner wall of the mask body and is connected to the dual-mode noise-canceling microphone signal;

[0008] A loudspeaker is installed at the chin position of the mask body, and the loudspeaker conducts sound directionally through the internal acoustic guide cavity;

[0009] A connecting mechanism is installed on the mask body. The connecting mechanism is used to stably wear the mask body on the head. At least one set of connecting mechanisms is provided.

[0010] An alarm mechanism, installed on the main body of the mask, is used to detect the stable fit between the mask body and the face;

[0011] The magnetically controlled power supply mechanism is mounted on the main body of the mask and is electrically connected to the flexible circuit board.

[0012] Furthermore, the loudspeaker is connected to the mask body via a quick-release magnetic interface, allowing for one-handed replacement.

[0013] As a preferred option, alarm mechanisms include:

[0014] The annular pressure sensor strip is installed at the edge of the mask body and fits stably against the face. The annular pressure sensor strip is connected to the flexible circuit board for signal transmission.

[0015] An alarm device is installed on the main body of the mask and is connected to a ring pressure sensor with a signal. The alarm device adopts a dual-mode alarm with vibration and red light, and can send alarms to the command terminal via Bluetooth.

[0016] Furthermore, the main body of the mask is made of medical-grade silicone, and a filter device is installed in the breathing channel of the main body of the mask, which is installed in a spiral manner.

[0017] Preferably, the magnetically controlled power supply mechanism includes:

[0018] The control box is installed on the main body of the mask. The control box has a built-in magnetic switch that uses a Hall sensor to detect the firefighter's hand gestures to activate communication.

[0019] The main power supply for the control box is a CR2032 button cell battery;

[0020] The backup power for the control box drives a miniature turbine generator installed inside the main channel of the mask via the breath airflow.

[0021] Furthermore, the turbine generator blades are made of Nylon 66 material, and the impeller diameter is ≤8mm.

[0022] Preferably, the acoustic cavity of the loudspeaker has a hexagonal honeycomb structure, and the cavity depth is in a 1 / 4 ratio with the wavelength of the sound wave.

[0023] Furthermore, the connecting mechanism includes:

[0024] Two fasteners are symmetrically installed at both ends of the mask body, and assembly parts are installed on the fasteners via quick-connect fittings;

[0025] The connecting strap, which connects to two assembly parts at each end, is made of elastic material.

[0026] This design presents a communication and amplification device for firefighters' breathing apparatus masks. The mask body serves as the base, providing a stable mounting position for other components. A dual-mode noise-canceling microphone embedded in the nose bridge of the mask body accurately captures the firefighter's voice while effectively reducing interference from surrounding noise, ensuring clear and accurate voice communication. This allows firefighters to smoothly communicate instructions and information with teammates in complex rescue situations. A flexible circuit board installed on the inner wall of the mask body establishes a signal connection with the dual-mode noise-canceling microphone, providing a reliable bridge for signal transmission and ensuring stable communication signal transmission. The flexible circuit board also effectively avoids affecting airtightness. A loudspeaker located under the chin of the mask body uses an internal acoustic duct to directionally conduct sound, not only clearly amplifying the received voice but also precisely controlling the direction of sound propagation, preventing sound distortion in noisy environments. To prevent information from being scattered and hindering communication, this device enables firefighters to receive instructions from teammates or the command center more efficiently. At least one connection mechanism is installed on the main body of the mask to ensure stable headwearing, preventing the mask from falling off during intense rescue operations and ensuring continuous effectiveness of communication and protection. An alarm mechanism installed on the main body of the mask can monitor the fit between the mask and the face in real time. If an unstable fit occurs, an alarm will be issued to alert firefighters, ensuring their breathing safety. A magnetic power supply mechanism installed on the main body of the mask and electrically connected to the flexible circuit board provides stable power support for the entire communication and amplification device. The magnetic control design allows firefighters to control the power without removing gloves or performing other complex operations, improving ease of use and comprehensively meeting the communication and safety needs of firefighters in various dangerous rescue scenarios. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the communication and amplification device for a firefighter's breathing apparatus mask in this utility model at the first angle;

[0028] Figure 2 This is a schematic diagram of the connection mechanism of the communication amplification device for the firefighter's air respirator mask in this utility model;

[0029] Figure 3 This is a schematic diagram of the internal structure of the main body of the communication amplification device for the firefighter's air breathing apparatus mask in this utility model;

[0030] Figure 4 This is a schematic diagram of the alarm mechanism structure of the communication and amplification device for the firefighter's breathing apparatus mask in this utility model;

[0031] Figure 5 This is a schematic diagram of the communication and amplification device for the firefighter's breathing apparatus mask in this utility model at a second angle;

[0032] The following are labeled in the attached diagram: 1. Mask body; 11. Filter device; 2. Dual-mode noise-canceling microphone; 3. Flexible circuit board; 4. Loudspeaker; 5. Connecting mechanism; 51. Fixing component; 52. Assembly component; 53. Connecting strap; 6. Alarm mechanism; 61. Annular pressure sensor strap; 62. Alarm device; 7. Magnetic power supply mechanism; 71. Control box. Detailed Implementation

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0034] This utility model relates to a communication amplification device for a firefighter's breathing apparatus mask, such as... Figures 1 to 5 As shown, it includes:

[0035] The main body of the face mask 1 is independently and fixedly installed;

[0036] A dual-mode noise-canceling microphone 2 is embedded in the bridge of the nose of the mask body 1;

[0037] The flexible circuit board 3 is installed on the inner wall of the mask body 1 and is connected to the dual-mode noise-canceling microphone 2 for signal transmission.

[0038] A loudspeaker 4 is installed at the chin position of the mask body 1, and the loudspeaker 4 conducts sound directionally through the internal acoustic guide cavity;

[0039] A connecting mechanism 5 is installed on the mask body 1. The connecting mechanism 5 is used to stably wear the mask body 1 on the head. At least one set of the connecting mechanism 5 is provided.

[0040] An alarm mechanism 6 is installed on the mask body 1 and is used to detect the stable fit between the mask body 1 and the face;

[0041] The magnetic power supply mechanism 7 is installed on the mask body 1 and is electrically connected to the flexible circuit board 3.

[0042] The face mask body 1 serves as the basic carrier, providing a stable mounting position for other components. The dual-mode noise-canceling microphone 2, embedded in the bridge of the nose of the face mask body 1, accurately captures the firefighter's voice while effectively reducing interference from surrounding noise, ensuring clear and accurate voice communication. This allows firefighters to smoothly communicate instructions and information with teammates in complex rescue situations. The flexible circuit board 3, installed on the inner wall of the face mask body 1, establishes a signal connection with the dual-mode noise-canceling microphone 2, building a reliable bridge for signal transmission and ensuring stable communication signal transmission. Furthermore, the flexible circuit board 3 effectively avoids affecting airtightness. The loudspeaker 4, located at the chin of the face mask body 1, uses an internal acoustic guide cavity to directionally conduct sound. This not only clearly amplifies the received voice but also precisely controls the direction of sound propagation, preventing sound dispersion in noisy environments and ensuring smooth information transmission. Firefighters can receive instructions from teammates or the command center more efficiently. The connection mechanism 5, installed on the main body of the mask 1, with at least one set, ensures that the main body of the mask 1 is stably worn on the head, preventing the mask from falling off during intense rescue operations and ensuring the continuous effectiveness of communication and protection functions. The alarm mechanism 6, installed on the main body of the mask 1, can detect the fit between the main body of the mask 1 and the face in real time. If the fit is unstable, it can promptly issue an alarm to remind the firefighters and ensure their breathing safety. The magnetic power control mechanism 7 is installed on the main body of the mask 1 and electrically connected to the flexible circuit board 3, providing stable power support for the entire communication and amplification device. At the same time, the magnetic control design allows firefighters to control the power without removing gloves or in other complex operating environments, improving ease of use and comprehensively meeting the communication and safety needs of firefighters in various dangerous rescue scenarios.

[0043] As a preferred option, such as Figures 1 to 5 As shown, the loudspeaker 4 is connected to the mask body 1 via a quick-release magnetic interface, supporting one-handed operation for replacement;

[0044] The quick-release magnetic interface design makes the replacement process of the loudspeaker 4 extremely fast. When the loudspeaker 4 malfunctions or needs cleaning or maintenance, firefighters only need to operate with one hand. By utilizing the strong adsorption force and convenient separation characteristics of the magnetic interface, they can quickly remove it from the mask body 1 and complete the installation of the new equipment, which greatly saves operation time.

[0045] As a preferred option, such as Figures 1 to 5 As shown, the alarm mechanism 6 includes:

[0046] The annular pressure sensor strip 61 is installed at the edge of the mask body 1 and fits stably against the face. The annular pressure sensor strip 61 is connected to the flexible circuit board 3 for signal transmission.

[0047] An alarm device 62 is installed on the main body 1 of the mask, and the alarm device 62 is connected to the annular pressure sensor 61. The alarm device 62 adopts a dual-mode alarm of vibration and red light, and sends the alarm to the command terminal via Bluetooth.

[0048] An annular pressure sensor strip 61, installed at the edge of the mask body 1 and stably fitted to the face, can accurately monitor pressure changes between the mask body 1 and the face in real time. If the mask becomes loose or shifts, causing instability in the fit, the pressure change signal will be quickly transmitted via the signal connection to the flexible circuit board 3. An alarm device 62, installed on the mask body 1, receives the signal from the annular pressure sensor strip 61. It employs a dual-mode alarm system of vibration and red light. In noisy rescue scenes, the vibration alarm allows firefighters to detect abnormalities immediately through touch, while the red light alarm attracts their attention with a striking visual signal. This dual alert ensures firefighters do not miss alarm information. Furthermore, the alarm device 62 can also send alarms to the command terminal via Bluetooth, allowing commanders to promptly monitor the firefighters' mask-wearing status and take appropriate measures when necessary, such as instructing firefighters to adjust their masks or arranging support. This comprehensively protects the breathing safety of firefighters during missions, reduces safety risks caused by mask fit issues, and enhances the safety and reliability of rescue operations.

[0049] As a preferred option, such as Figures 1 to 5 As shown, the main body 1 of the mask is made of medical silicone material, and a filter device 11 is installed in the breathing channel of the main body 1 of the mask. The filter device 11 is installed in a spiral manner.

[0050] The face mask body 1, made of medical-grade silicone, has excellent biocompatibility, effectively reducing irritation to facial skin and maintaining comfort even during prolonged wear. Its good flexibility allows it to closely conform to the facial contours of different firefighters, enhancing the mask's seal and providing a solid foundation for respiratory protection. The filter device 11 at the breathing channel efficiently filters harmful particles, smoke, and some harmful gases from the air, providing firefighters with a clean breathing air source and greatly reducing the risk of inhaling harmful substances in dangerous environments such as fires. The filter device 11 is installed in a spiral manner, making the installation process simple and quick, allowing firefighters to easily complete installation and replacement, saving time.

[0051] As a preferred option, such as Figures 1 to 5 As shown, the magnetically controlled power supply mechanism 7 includes:

[0052] The control box 71 is installed on the main body 1 of the mask. The control box 71 has a built-in magnetic switch and initiates communication by sensing the firefighter's hand gesture through a Hall sensor.

[0053] The main power supply for control box 71 is a CR2032 button battery;

[0054] The backup power supply of the control box 71 drives a miniature turbine generator installed in the channel of the mask body 1 through the breathing airflow;

[0055] The turbine generator blades are made of Nylon 66 material, and the impeller diameter is ≤8mm;

[0056] The control box 71, mounted on the main body 1 of the mask, features a built-in magnetic switch and a Hall sensor, enabling precise sensing of firefighters' hand gestures. No manual button operation is required; firefighters can initiate communication simply by waving their hands, even when their hands are occupied or they are wearing heavy gloves. This significantly improves operational convenience, ensures timely communication, and prevents delays in transmitting critical instructions. The main power supply uses a CR2032 button battery, which is compact, provides stable power, and is easy to replace. The backup power supply cleverly utilizes the airflow from the breath to drive a miniature turbine generator installed within the channel of the main body 1 of the mask. During normal breathing, the airflow drives the turbine generator to generate electricity, achieving energy recovery and reuse, effectively extending the device's runtime and reducing dependence on external power. The turbine generator blades are made of Nylon 66, a material known for its high strength, light weight, and wear resistance, ensuring stable operation even under prolonged and frequent airflow impacts. With an impeller diameter ≤8mm, its compact design allows for clever installation within the channel of the main body 1 of the mask, without affecting breathing comfort or the overall structure of the mask. This comprehensively meets the firefighters' needs for stable power supply to the communication and amplification device in complex rescue environments.

[0057] As a preferred option, such as Figures 1 to 5 As shown, the acoustic guide cavity of the loudspeaker 4 is a hexagonal honeycomb structure, and the cavity depth is in a 1 / 4 ratio with the sound wave wavelength.

[0058] The hexagonal honeycomb structure possesses excellent acoustic properties. Its unique geometry effectively reduces sound reflection and scattering within the cavity, making sound propagation more concentrated and orderly, avoiding unnecessary loss of sound energy, and thus improving sound propagation efficiency. The ratio of cavity depth to 1 / 4 of the sound wave wavelength can produce a specific resonance effect, amplifying and optimizing sound at specific frequencies, especially for speech frequencies. This makes the speech played by the loudspeaker 4 clearer, fuller, and more easily identifiable. In noisy rescue scenes such as fires and disasters, this optimized sound conduction effect allows firefighters to receive instructions from teammates or the command center more accurately and efficiently, reducing misunderstandings caused by unclear or noisy sound, effectively ensuring smooth communication during rescue operations, and improving team collaboration efficiency.

[0059] As a preferred option, such as Figures 1 to 5 As shown, the connecting mechanism 5 includes:

[0060] Two fasteners 51 are symmetrically installed at both ends of the mask body 1, and assembly parts 52 are installed on the fasteners 51 by quick-connect method;

[0061] The connecting strap 53 is connected to two assembly parts 52 at both ends, and the connecting strap 53 is made of elastic material.

[0062] Two fasteners 51, symmetrically installed at both ends of the main body 1 of the mask, provide a stable installation base for the entire connecting mechanism 5, ensuring that it will not easily loosen or shift during use. The quick-connect assembly 52 on the fasteners 51 greatly simplifies the installation and disassembly process of the connecting strap 53. The two ends of the connecting strap 53 are connected to the two assembly 52 and are made of elastic material. When worn, it can automatically adjust according to the different sizes and shapes of the firefighter's head, providing appropriate binding force. This ensures that the main body 1 of the mask fits the face tightly, preventing it from falling off during strenuous exercise or complex rescue environments, and ensuring the stable operation of communication and protection functions. It also avoids discomfort to the firefighter's head due to excessive tightness and maintains good comfort even after long-term wear. It comprehensively meets the multiple needs of firefighters for the convenience, stability, and comfort of wearing the mask when performing tasks, and provides strong support for efficient rescue work.

[0063] The communication and amplification device for firefighters' air breathing apparatus masks of this utility model can be installed, connected, or set up using common mechanical methods. Any method that can achieve its beneficial effect can be implemented.

[0064] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A communication and amplification device for a firefighter's breathing apparatus mask, characterized in that, include: The main body of the mask (1) is independently and fixedly installed; A dual-mode noise-canceling microphone (2) is embedded in the bridge of the nose of the mask body (1); A flexible circuit board (3) is installed on the inner wall of the mask body (1) and is connected to the dual-mode noise-canceling microphone (2) for signal transmission. A loudspeaker (4) is installed at the chin position of the mask body (1), and the loudspeaker (4) conducts sound directionally through the internal acoustic guide cavity; A connecting mechanism (5) is installed on the mask body (1). The connecting mechanism (5) is used to stably wear the mask body (1) on the head. At least one set of the connecting mechanism (5) is provided. An alarm mechanism (6) is installed on the mask body (1) and is used to detect the stable fit between the mask body (1) and the face; A magnetic power supply mechanism (7) is installed on the mask body (1) and is electrically connected to the flexible circuit board (3).

2. The firefighter's air respirator mask communication amplification device as described in claim 1, characterized in that, The loudspeaker (4) is connected to the mask body (1) via a quick-release magnetic interface, allowing for one-handed replacement.

3. The firefighter's air respirator mask communication amplification device as described in claim 1, characterized in that, The alarm mechanism (6) includes: An annular pressure sensor strip (61) is installed at the edge of the mask body (1) and fits stably against the face. The annular pressure sensor strip (61) is connected to the flexible circuit board (3) for signal transmission. An alarm device (62) is installed on the mask body (1) and the alarm device (62) is connected to the annular pressure sensor band (61) via signal. The alarm device (62) adopts a dual-mode alarm with vibration and red light, and sends an alarm to the command terminal via Bluetooth.

4. The firefighter's air respirator mask communication amplification device as described in claim 1, characterized in that, The mask body (1) is made of medical silicone material, and a filter device (11) is installed in the breathing channel of the mask body (1). The filter device (11) is installed in a spiral manner.

5. The firefighter's air respirator mask communication amplification device as described in claim 1, characterized in that, The magnetically controlled power supply mechanism (7) includes: A control box (71) is installed on the mask body (1). The control box (71) has a built-in magnetic switch and initiates communication by sensing the firefighter's hand gesture through a Hall sensor. The main power supply for the control box (71) is a CR2032 button battery; The backup power supply of the control box (71) drives the micro turbine generator installed in the channel of the mask body (1) through the breathing airflow.

6. The firefighter's air respirator mask communication amplification device as described in claim 5, characterized in that, The turbine generator blades are made of Nylon 66 material, and the impeller diameter is ≤8mm.

7. The firefighter's air respirator mask communication amplification device as described in claim 1, characterized in that, The acoustic guide cavity of the loudspeaker (4) is a hexagonal honeycomb structure, and the cavity depth is proportional to the wavelength of the sound wave in a 1 / 4 ratio.

8. The firefighter's air respirator mask communication amplification device as described in claim 1, characterized in that, The connecting mechanism (5) includes: Two fasteners (51) are symmetrically installed at both ends of the mask body (1), and an assembly component (52) is installed on the fasteners (51) by a quick-connect method; The connecting strap (53) is connected to the two assemblies (52) at both ends, and the connecting strap (53) is made of elastic material.

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