CN204319550U - A kind of novel display unit of breathing on full facepiece mask - Google Patents

Abstract

The utility model discloses a novel display device on a full-face breathing mask, which comprises a large interface cover arranged around the periphery of an air supply valve and a mouth and nose mask with eye light-transmitting holes arranged at the place where the interface cover is connected to the full-face mask, the interface Display brackets are arranged on the left and right sides of the large cover, and a bottom cover is arranged in the display bracket and a circuit board is arranged between the two. There is a light-through hole on the upper part of the display screen, and a light-shielding bracket is arranged on the inner side of the light-shielding bracket. A convex lens and a sealing pressure ring are arranged on the inner side of the light-shielding bracket. The two symmetrical light-shielding brackets are connected and fixed by a fixing frame. The light is transmitted through the light hole to the convex lens and finally converges into the human eye. The utility model simplifies the setting of the display device on the traditional air supply valve, the display is packaged in the large interface cover, and the convex lens is packaged inside the full-face mask, the structure is flexible and light, and the display is directly and conveniently viewed.

Description

A new type of display device on a full-face breathing mask

technical field

The utility model relates to the field of portable respirators for firefighting, in particular to a novel display device on a full-face breathing mask. the

Background technique

The current positive pressure air respirator can be widely used in fire-fighting, chemical industry, metallurgy, miners, petroleum and other polluted areas, fire scenes, rescue measures and maintenance work in other possible oxygen-deficient areas. It is designed to protect users from toxic gases, toxic particles and aerosols, anoxic environments with an oxygen content below 15%, smoke caused by fires, and other harsh working environments. It is a kind of life-saving equipment for fire extinguishing, emergency rescue and rescue work safely and effectively in various environments such as hypoxia.

At present, positive pressure air respirators mainly include gas cylinders, full-face masks, pressure display devices and alarm devices. Among them, the current pressure head-up display device of positive pressure air breathing apparatus (SCBA) includes two parts: a transmitter and a head-up display. The launch end is generally placed on the back or chest, and is connected to the launch end through a high-pressure tube. The connection mode between the transmitter and the head-up display can be divided into two types: wired and wireless. The head-up display generally adopts the LED display mode. When the gas cylinder pressure is 10-30MPa, the LED green light is always on; when the gas cylinder pressure is 6-10MPa, the yellow light is always on; when the gas cylinder pressure is below 6MPa, the red light is on. The light is always flashing; in addition, it is also equipped with a low-voltage warning light for the power supply, and a pairing light for the wireless mode.

The wired head-up display terminal is generally set on the air supply valve, and its LED position is close to the connection interface between the air supply valve and the full face mask. It is relatively forward, and the longest distance between the LED light and the eyes is less than 120mm , generally within 100-110mm; most of the head-up display terminals connected wirelessly are set inside the full-face mask, and the distance between the LED and the eyes is less than 80mm. The current air supply valve and full-face mask for respirators are not yet aimed at head-up display. The light-shielding and anti-smoke hole structure of the display device will cause the user to be affected by ambient light and smoke when observing the head-up display device, resulting in unclear or impossible to see the display content, thereby affecting the decision-making of the user and also affecting Rescue work. However, the optical characteristics of the tapered or wedge-shaped full-face masks are not humane enough, and the appearance is not beautiful enough, and the weight is about 40% heavier, reaching 700 grams, while the ordinary mask is only 500 grams, which makes the wearer more prone to fatigue. Some power supply devices have complex structures, unreasonable installation positions, and complicated wiring lines. When worn, it is easy to cause wire winding. When used, battery replacement is slow, posing potential safety hazards, and not convenient enough to use.

The Chinese patent No. 201220007351.1 of the reference document discloses an air respirator mask with display pressure. This pressure display device is arranged on the upper end of the full-face mask, and the pressure display device is located within the wearer's visual range. This type Although the air respirator mask of the company has added a pressure display device, which reduces the frequency of users checking the pressure gauge, the wirelessly connected head-up display terminal he uses is set on the upper part of the full mask, and the distance between the display device and the eyes is short. The user looks very strenuous, and is prone to visual fatigue, which affects the rescue work; at the same time, the pressure display scheme of the display part is too rough and inaccurate, and the pressure cannot be directly displayed digitally, which is not convenient for the user to accurately determine the specific value of the pressure , and the displayed information is relatively simple, which affects the user's work efficiency and affects the user or firefighters to quickly make decisions based on the information;

In addition, the display screen is arranged on the air supply valve in general full-face masks, which makes the air supply valve heavy and bulky, which is inconvenient to operate, and the head-up display device installed on the air supply valve is also inconvenient to watch with human eyes. Moreover, for people with different visual ranges, the viewing comfort and applicability are different.

Contents of the invention

The main technical problem to be solved by the utility model is to provide a new type of display device on the full-face breathing mask. By setting the display screen in the large interface cover on both sides of the air supply valve, and setting the convex lens in the mouth and nose mask, the visual distance can be appropriately shortened. distance and enhance the display effect, and enhance the display effect while reducing the volume of the air supply valve.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a new display device on the full-face mask, including the full-face mask (1) and the air supply valve, and the connection between the air supply valve and the full-face mask (1) A mouth and nose mask (2) is arranged on the site, and a curved transparent window lens (3) is installed on the front of the full face mask (1). The air supply valve interface (4) is provided in the middle of the lower part of the cover (2), and the outer surface of the air supply valve interface (4) is provided with a large interface cover (5) surrounded by four sides, and the left and right sides of the large interface cover (5) are respectively connected There is a display bracket (10), the mouth and nose mask (2) is provided with a light-transmitting hole (13) at the position corresponding to the human eye, and the inside of the display bracket (10) is provided with a bottom cover (11) and it passes through the lock Tighten the screw (12) to fix it, a circuit board (9) is arranged between the bottom cover (11) and the display bracket (10), and the circuit board (9) is on the side close to the large interface cover (5) There is a display screen (8) inside, and the display bracket (10) or the bottom cover (11) is provided with a light hole on the upper part of the display screen (8), and the inner side of the light hole (13) A light-shielding bracket (14) is provided, and a convex lens (7) is arranged on the inner side of the light-shielding bracket (14) and at one end close to the light-transmitting hole (13). One end of the hole (13) is provided with a sealing pressure ring (6), and the two left-right symmetrical light-shielding brackets (14) are connected and provided with a fixing frame.

In a preferred embodiment of the utility model, the fixing bracket is a fixing bracket with a nose pad in the middle and lower part.

In a preferred embodiment of the present utility model, the display screen (8) is electrically connected with the circuit board (9).

The beneficial effects of the utility model are: the utility model is a novel display device on a full-face breathing mask by setting the display screen in the large interface covers on both sides of the air supply valve, and setting the convex lens in the light-shielding bracket in the mouth and nose mask , can be easily viewed, the volume of the compressed air valve reduces the overall frame of the full face mask, making it more flexible and convenient to use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is the structural representation of the novel display device on a kind of breathing mask of the present utility model;

Fig. 2 is a front view of Fig. 1 .

The marks of each part in the accompanying drawings are as follows: 1, full-face mask, 2, mouth and nose mask, 3, window lens, 4, air supply valve interface, 5, interface big cover, 6, sealing pressure ring, 7, convex lens, 8, Display screen, 9, circuit board, 10, display bracket, 11, bottom cover, 12, locking screw, 13, light transmission hole, 14, light-shielding bracket.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1 to Fig. 2, the utility model embodiment comprises:

A novel display device on a full-face mask is a new-type display device on a full-face mask, which includes a full-face mask 1 and an air supply valve, a mouth-nose mask 2 is provided at the connection between the air supply valve and the full-face mask 1, and the front of the full-face mask 1 A curved transparent window lens 3 is installed, and the lower middle position of the transparent window lens 3 is connected with a mouth and nose mask 2, and the middle of the bottom of the mouth and nose mask 2 is provided with an air supply valve interface 4, and the outside of the air supply valve interface 4 is provided with four sides Surrounding large interface cover 5, the left and right sides of the large interface cover 5 are respectively connected with display brackets 10, the mouth and nose mask 2 is provided with a light-transmitting hole 13 at the position corresponding to the human eye, and the inside of the display bracket 10 is provided with The bottom cover 11 is fixed by locking screws 12. A circuit board 9 is arranged between the bottom cover 11 and the display bracket 10. It is characterized in that: the circuit board 9 is on the side close to the large interface cover 5 A display screen 8 is provided, and the display bracket 10 or the bottom cover 11 is provided with a light-through hole on the upper part of the display screen 8, and a light-shielding bracket 14 is arranged inside the light-transmitting hole 13, and the light-shielding bracket 14 A convex lens 7 is provided on the inner side and near the end of the light-transmitting hole 13. The light-shielding bracket 14 is provided with a sealing pressure ring 6 at an end far away from the light-transmitting hole 13. Two left-right symmetrical light-shielding brackets 14 Connected and provided with a fixed frame.

The fixed frame is a fixed bracket with a nose pad in the middle and lower part.

The display screen 8 is electrically connected with the circuit board 9 .

The circuit board 9 is provided with a microprocessor, and the microprocessor is correspondingly provided with a manual setting button. The display screen 8 is a digital or/and pattern display device, and its display parameters include the display of the manual setting function.

The diameter range of the convex lens 7 is 8-20mm.

The focal length range of the convex lens 7 is 20-50mm.

The display screen 8 is a digital or/and pattern display device, and its display parameters include air pressure display, temperature display, air supply remaining time display and punctual time display, compass display and indication of the direction of action in the back field, and display parameters also include manual The display of the setting function, the manual setting function realizes the display control function through PLC or other non-processors.

Specific embodiment: the light emitted by the display screen set in the large interface cover 5 is transmitted to the light-transmitting hole 13 through the light-shielding bracket 14, and then converged by the convex lens 7 and finally enters the human eye. Through this design, the displayed content is far away from the human eye. The position can also be clearly and effortlessly seen, which is convenient for intuitive and quick access to various data information, and can directly display the pressure, ambient temperature, remaining time, punctual time, and direction instructions with numbers, so that users can know at any time Direction information, so that users will not lose their way even in a dense fog environment, so that they can understand the information comprehensively and accurately without the help of hands to look at the digital display smart watch on the chest.

In addition, the reminder of the paired alarm light and alarm device can improve the work efficiency of the user and enable the operator to make better decisions to ensure life safety.

The beneficial effects of the novel display device on a full breathing mask of the utility model are:

1. It overcomes the shortcomings of the existing products, such as the large volume of the air supply valve, the long visual distance of the display screen, and the inconvenience of viewing;

2. Benefits: The volume of the air supply valve is reduced. Compared with the existing design, the air respirator looks more compact as a whole. According to the settings of different visual groups, the visual distance is shortened to a certain range, and the viewing distance is easier. clarity and convenience;

The above descriptions are only examples of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (3)

1. breathe the novel display unit on full facepiece mask for one kind, comprise full facepiece mask (1) and steam supply valve, the position that steam supply valve is connected with full facepiece mask (1) is provided with oronasal mask (2), the front of full facepiece mask (1) is provided with the transparent window eyeglass (3) of arc, the centre position, below of transparent window eyeglass (3) is connected with oronasal mask (2), steam supply valve interface (4) is provided with in the middle of the bottom of oronasal mask (2), the outer setting of steam supply valve interface (4) have four sides around the large lid of interface (5), the left and right sides of the large lid of interface (5) is connected to display support (10), described oronasal mask (2) is provided with loophole (13) at the position of corresponding human eye, the inside of described display support (10) is provided with bottom (11) and it is fixed by lock screw (12), wiring board (9) is provided with between described bottom (11) and described display support (10), it is characterized in that: described wiring board (9) is provided with display screen (8) in the side near the large lid of interface (5), described display support (10) or described bottom (11) are provided with light hole on the top of described display screen (8), the inner side of described loophole (13) is provided with shading support (14), the inner side of described shading support (14) and the one end near described loophole (13) is provided with convex lens (7), described shading support (14) is provided with sealing clamping ring (6) in the one end away from described loophole (13), connect between two symmetrical described shading supports (14) and be provided with fixed mount.

2. a kind of novel display unit of breathing on full facepiece mask according to claim 1, it is characterized in that, described fixed mount is the fixed support of middle and lower part with nose support.

3. a kind of novel display unit of breathing on full facepiece mask according to claim 1, is characterized in that, described display screen (8) and described wiring board (9) are electrically connected.