CN109276368B - Self-powered ventilable welding mask with dual cameras - Google Patents

Abstract

The invention discloses a self-powered breathable electric welding mask with double cameras, which comprises a mask main body, a flat light camera device, a light filtering camera device, a liquid crystal display device and a self-powered device, wherein images before electric welding and during arc striking can be clearly shot through the flat light camera device, an operator can check the positions of welding spots in time through the images, and the position deviation of the welding spots during arc striking operation is avoided; the speed, the direction and the state of a molten pool of the strip during welding operation can be clearly observed through the optical filtering camera device, so that the welding quality is better ensured; the liquid crystal display screen can present images shot by the two camera devices in real time, and can realize free switching of double-screen and single-screen display; the photovoltaic cell panel is a semiconductor material, has a wider band gap, and can convert all light energy from ultraviolet light to infrared light in electric welding arc light into electric energy; the charge-discharge control circuit board can regulate and control charge and discharge of the photovoltaic cell panel and the storage battery in real time according to the generated energy of the photovoltaic cell panel and the power consumption of the equipment.

Description

Self-powered ventilable welding mask with dual cameras

Technical field

The present invention relates to a self-powered ventilable welding mask with dual cameras.

Background technique

During welding operations, welding arc light that is harmful to the human body will be generated. Welding arc light mainly includes infrared ray, visible light and ultraviolet ray. The main harm caused by the infrared rays of the welding arc to the human body is the thermal effect on the tissues. If the eyes are exposed to strong infrared radiation, they will immediately feel strong burns and burning pain. Long-term exposure will cause chronic damage to the eyes. After the eye lens absorbs excessive infrared rays for a long time, its elasticity will become worse, making it difficult to adjust, causing vision loss. It can also cause retinal burns. The luminosity of the visible light from the welding arc is 10,000 times greater than the light luminosity that the human eye can normally withstand. It will burn the retina and cause dazzle retinitis. At this time, you will feel eye pain, visual film blur, and a central dark spot. , it will take a period of time to recover; if the effect is repeated for a long time, the vision will gradually decrease. Excessive exposure to ultraviolet rays from the welding arc can cause acute keratitis in the eyes, called electro-optical ophthalmia, which is a special occupational eye disease among welders.

In order to avoid the harmful radiation of ultraviolet and infrared rays produced by the arc and the damage to the eyes caused by the strong light of welding, various welding protective masks have emerged to meet market demand. Among them, the light-controlled welding mask is the most advanced welding protection currently on the market. Face mask. However, the process of changing the transmittance of the light-controlled welding mask takes time, so the effect of the arc light at the moment of arc onset cannot be completely avoided. However, the radiation intensity reaches a maximum value at the moment of arc onset, so the welding arc light will still cause damage to the human eye.

Moreover, the light-controlled welding mask requires an external power supply, which is inconvenient to use and carry. At the same time, existing welding masks cannot filter gas, are harmful to the human body, and have poor comfort.

Contents of the invention

The present invention provides a self-powered ventilable welding mask with dual cameras, which overcomes the shortcomings of the background technology. The technical solutions adopted by the present invention to solve the technical problems are:

Self-powered ventilable welding mask with dual cameras, characterized by: It includes:

The mask main body is provided with a first through hole and a second through hole;

A flat camera device used to capture images of electrode positioning and arc ignition before welding. The flat camera device is installed at the first through hole;

A filter camera device used to photograph actual working conditions during the welding process, the filter camera device is installed at the second through hole;

A liquid crystal display device that can display real-time images captured by a flat light camera device and a filter camera device individually or simultaneously. The liquid crystal display device includes an LCD screen. The LCD screen is installed on the inner side of the mask body and is electrically connected to the flat light camera device and the filter camera device. device;

The self-powered device includes a photovoltaic panel and a power balancing supply module that can convert all light energy from ultraviolet to infrared light in the welding arc into electrical energy. The photovoltaic panel is installed on the outer side of the mask body, and the power balancing supply module is installed on the mask. The main body includes a power interface, a battery, a charge and discharge control circuit board and a charging interface. The photovoltaic panel is electrically connected to the charge and discharge control circuit board and the battery. The power interface and charging interface are electrically connected to the charge and discharge control circuit board. The photovoltaic panels and batteries are electrically connected to the LCD screen, the flat light camera device and the filter camera device.

A preferred embodiment also includes a ventilation device, which is installed on the outer side of the mask body. The ventilation device includes a base and a filter cover removably attached to the base. The base is connected to the front of the mask body. The ventilation device is connected and has an air outlet between the base and the main body of the mask. The ventilation device also includes a motor fixed on the base and a fan blade that is transmission connected to the motor. The photovoltaic panel and the battery are electrically connected to the motor.

In a preferred embodiment: the charge and discharge control circuit board can compare the power generation of the photovoltaic panel with the total power consumption of the liquid crystal display, flat light camera device, filter camera device and motor to control the photovoltaic panel in real time. And battery charging and discharging:

1). When the power generated by the photovoltaic panel is greater than the total power consumption of the LCD screen, flat light camera device, filter camera device and motor, the charge and discharge control circuit board controls the photovoltaic panel to charge the required power supply components and batteries at the same time;

2). When the power generated by the photovoltaic panel is less than the total power consumption of the LCD screen, flat light camera device, filter camera device and motor, the charge and discharge control circuit board controls the photovoltaic panel and battery to simultaneously supply power to the required power supply components;

3). When the power generated by the photovoltaic panel is equal to the total power consumption of the liquid crystal display, flat light camera device, filter camera device and motor, the charge and discharge control circuit board controls the photovoltaic panel to directly supply power to the required power supply components.

A preferred embodiment also includes a ventilation device, which is installed on the outer side of the mask body. The ventilation device includes a base and a filter cover removably attached to the base. The base is connected to the front of the mask body. It is connected and has an air outlet between the base and the main body of the mask.

In a preferred embodiment: the ventilation device further includes a motor fixed on the base and a fan blade that is transmission connected to the motor, and the photovoltaic panel and battery are electrically connected to the motor.

In a preferred embodiment: the base is located below the front of the mask body, and the base is arranged at an angle.

In a preferred embodiment: the mask also includes an observation eyepiece for magnifying the real-time image on the LCD screen to form a clear virtual image at a clear vision distance. The observation eyepiece is installed on the main body of the mask and corresponds to the liquid crystal display device.

In a preferred embodiment: the flat camera device includes a first camera and a flat protective cover that can transmit all light. The flat protective cover is embedded in the first through hole, and the first camera is fixedly connected in the flat protective cover. On the side, the real-time image is transmitted to the liquid crystal display device, and the first camera is electrically connected to the photovoltaic panel and the battery.

In a preferred embodiment: the filter camera device includes a second camera and a filter protective cover that can block infrared rays, ultraviolet rays and reduce the transmission ratio of visible light. The filter protective cover is embedded in the second through hole. The camera is fixedly connected to the inner side of the filter protective cover and transmits real-time images to the liquid crystal display device. The second camera is electrically connected to the photovoltaic panel and the battery.

In a preferred embodiment: the liquid crystal display screen is located between the flat light camera device and the filter camera device and in the middle of the mask body.

In a preferred embodiment: the mask body is provided with an assembly cavity, the first through hole and the second through hole are both opened on the front side of the assembly cavity; two installation holes are opened on the side behind the assembly cavity, There are two observation eyepieces and they are respectively installed in two mounting holes. The front ends of the two observation eyepieces face the LCD screen.

In a preferred embodiment: the liquid crystal display device further includes an image manager, which is installed in the assembly cavity and electrically connected to the liquid crystal display, photovoltaic panels and batteries; the welding mask also includes a lighting lamp, the The lighting lamp is installed on the outer side of the main body of the mask and is located directly above the LCD screen. The lighting lamp is electrically connected to the photovoltaic panel and the battery. The welding mask also includes a number of control buttons. The control buttons are installed on the outer side of the main body of the mask. The control buttons include The image switching button, image enlarging button, image reducing button, lighting control button and ventilation knob are all electrically connected to the image manager, and the lighting control button is electrically connected to the lighting. , the ventilation knob is electrically connected to the motor.

Compared with the background technology, this technical solution has the following advantages:

1. The present invention uses two camera devices to present the images before welding and during the welding process on the liquid crystal display in real time without the need for direct observation by human eyes, thereby preventing human eyes from looking directly at the arc and being harmed by harmful arc light. Specifically:

The flat camera device can clearly capture images before welding and during arc ignition. The operator can use the images to check the position of the solder joint in time to avoid position deviation of the solder joint during the arc ignition operation;

Through the filter camera device, the speed, direction and state of the molten pool during the welding operation can be clearly observed to better ensure the welding quality;

The LCD screen can present the images captured by the two camera devices in real time, enabling free switching between dual-screen and single-screen displays; since the arc ignition process is short and emits infrared, ultraviolet and high-intensity visible light, dual-screen display is easy to operate. The operator operates the arc ignition steps and smoothly transitions between the arc ignition and bar transport steps;

The photovoltaic panel is a semiconductor material with a wide band gap that can convert all light energy from ultraviolet to infrared light in the welding arc into electrical energy; the charge and discharge control circuit board can be controlled according to the power generation capacity and equipment of the photovoltaic panel. Power consumption, real-time control of the charge and discharge of photovoltaic panels and batteries. At the same time, after work, the welding mask can be placed under the sun to generate electricity. The electricity generated can be used for mobile phones, mini fans and other electrical appliances. The battery can also be charged through the mains, and the welding mask can be used as a mobile phone. Power usage. 2. The ventilation device is equipped with a filter cover. The gas breathed by the user can be filtered through the filter cover. The filter cover can filter most harmful impurities in the air in the welding place, which is more beneficial to the user's health.

3. The ventilation device also includes a motor and fan blades. The self-powered device can supply power to the motor. The fan blades rotate under the drive of the motor to dissipate heat for the user and improve the user's comfort.

4. The base is located below the front of the mask body and is arranged at an angle, which is conducive to the air blown into the mask body to dissipate heat on the user's face, and the heat dissipation effect is better.

5. Since when the operator wears the welding mask, the distance between the human eye and the main body of the mask is very short and cannot reach the visual distance, the real image of the LCD screen can be magnified through the observation eyepiece to form a clear image at the clear vision distance. Virtual image, the human eye can clearly observe the image presented on the LCD screen through the eyepiece.

6. The flat camera device includes the first camera and the flat protective cover. Since the flat protective cover has the characteristics of high temperature resistance, non-flammability, and heat insulation, it can protect the first camera, and the flat protective cover can transmit all light. It can clearly capture images before welding and when arc ignition starts.

7. The filter camera device includes a second camera and a filter protective cover. Since the filter protective cover has the characteristics of high temperature resistance, non-flammability, heat insulation and filtering part of the arc light, it can not only protect the second camera, but also effectively block infrared rays. , ultraviolet and reduce the transmission ratio of visible light to clearly photograph the working conditions during the welding process.

8. The LCD screen is located between the flat light camera device and the filter camera device and in the middle of the mask body, making the mask more compact. When the operator wears the mask, the LCD screen is just in the middle of the human eye, which conforms to the human body. observation habits.

9. The control buttons include image enlargement button, image reduction button and image switching button, which can enlarge, reduce or switch the image in real time to observe the working conditions more clearly and make it more convenient to use. The welding mask also includes a light and a light control button that controls the light on and off. The operator can freely control the light on and off according to the working environment to better perform work.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and examples.

Figure 1 shows a schematic front view of a welding helmet according to a preferred embodiment.

FIG. 2 illustrates a schematic cross-sectional view along line A-A in FIG. 1 .

Figure 3 shows a schematic side view of a welding helmet according to a preferred embodiment.

Figure 4 illustrates a schematic rear view of a preferred embodiment.

Detailed ways

Please refer to Figures 1 to 4 for a preferred embodiment of a self-powered ventilable welding mask with dual cameras. The self-powered ventilable welding mask with dual cameras includes a mask body 1, a flat camera device 4, Filter camera device 5, liquid crystal display device and self-powered device.

The mask body 1 is provided with a first through hole and a second through hole. The main body 1 of the mask is made of a material that is harmless to the skin, has good breathability, is non-flammable, can effectively insulate heat, and can block the transmission of arc light from welding, so as to reduce the harm to the human body caused by harmful gases and dust released by welding.

In this embodiment, the mask body 1 is provided with an assembly cavity, the first through hole and the second through hole are both opened on the front side of the assembly cavity, and two installation holes are opened on the back side of the assembly cavity.

The flat camera device 4 is used to capture images of the welding rod positioning and arc ignition before welding. The flat camera device 4 is installed at the first through hole.

In this embodiment, the flat camera device 4 includes a first camera 42 and a flat protective cover 41 that can transmit all light. The flat protective cover 41 is fitted in the first through hole, and the first camera 42 is fixedly connected to the flat protective cover. The inner side of the cover 41 transmits the real-time image to the liquid crystal display device.

The filter camera device 5 is used to capture actual working conditions during the welding process, and the filter camera device 5 is installed at the second through hole.

In this embodiment, the filter camera device 5 includes a second camera 52 and a filter protective cover 51 that can block infrared rays, ultraviolet rays and reduce the transmission ratio of visible light. The filter protective cover 51 is fitted in the second through hole. The two cameras 52 are fixedly connected to the inner side of the filter protective cover 51 and transmit real-time images to the liquid crystal display device.

The liquid crystal display device can display the real-time captured images of the flat light camera device 4 and the filter camera device 5 individually or simultaneously. The liquid crystal display device includes a liquid crystal display 8. The liquid crystal display 8 is installed on the inner side of the mask body 1 and is electrically connected to the flat light camera. Camera device 4 and filter camera device 5.

In this embodiment, the liquid crystal display screen 8 is located between the flat light camera device 4 and the filter camera device 5 and in the middle of the mask body 1 . The liquid crystal display screen 8 is located between the flat light camera device 4 and the filter camera device 5 and in the middle of the mask body 1, making the mask more compact. When the operator wears the mask, the liquid crystal display screen 8 is just in the middle of the human eye. , in line with human observation habits.

In this embodiment, the liquid crystal display device further includes an image manager, which is installed in the assembly cavity and electrically connected to the liquid crystal display 8 .

The welding mask also includes a number of control buttons 7, which are installed on the outer side of the mask body 1. The control buttons 7 include an image switching button 71, an image enlarging button 72, and an image reducing button 73. The image switching button 71 and the image enlarging button 72 , image reduction button 73 are electrically connected with the image manager.

In this embodiment, the welding mask also includes a ventilation device 3. The ventilation device 3 is installed on the outer side of the mask body 1. The ventilation device 3 includes a base 31 and a filter cover 34 detachably mounted on the base 31. , the base 31 is connected to the front of the mask main body 1 and an air outlet is provided between the base 31 and the mask main body 1 . The ventilation device 3 is provided with a filter cover 34, and the gas breathed by the user can be filtered through the filter cover 34. The filter cover 34 can filter most harmful impurities in the air of the welding site, which is more beneficial to the user's health.

In this embodiment, the ventilation device 3 further includes a motor 32 fixed on the base 31 and a fan blade 33 that is transmission connected to the motor 32. The photovoltaic panel 21 and the battery 222 are both electrically connected to the motor 32. The ventilation device 3 also includes a motor 32 and a fan blade 33. The self-powered device 2 can supply power to the motor 32. The fan blade 33 rotates under the driving of the motor 32 to dissipate heat for the user and improve the user's comfort.

In this embodiment, the base 31 is located below the front of the mask body 1, and the base 31 is arranged at an angle. As shown in Figure 3, the base 31 is a cylinder, and the angle between the central axis of the cylinder and the connecting surface of the mask body 1 and the base 31 is an acute angle, so that the air outlet faces the user's face, which is conducive to blowing in. The air in the mask body 1 radiates heat to the user's face, and the heat dissipation effect is better.

The control button also includes a ventilation knob 75 , which is electrically connected to the motor 32 . The ventilation knob 75 can control the air inlet volume, so that users can work comfortably under various climate conditions. For example, the ventilation knob 75 can increase the ventilation air volume when it is hot, and decrease the ventilation air volume when it is cold.

The self-powered device includes a photovoltaic panel 21 that can convert all light energy from ultraviolet to infrared light in the welding arc into electrical energy and a power balancing supply module 22. The photovoltaic panel 21 is installed on the outer side of the mask body 1, and the power is balanced. The supply module 22 is installed on the mask body 1 and includes a power interface 221, a battery 222, a charge and discharge control circuit board 223 and a charging interface 224. The photovoltaic panel 21 is electrically connected to the charge and discharge control circuit board 223 and the battery 222 to obtain power. The interface 221 and the charging interface 224 are electrically connected to the charge and discharge control circuit board 223 , and the photovoltaic panel 21 and the battery 222 are electrically connected to the liquid crystal display 8 , the planar camera 4 and the filter camera 5 .

As shown in FIG. 1 , the photovoltaic panel 21 is installed on the front of the mask body 1 , and the power balancing supply module 22 is installed on the top of the mask body 1 .

In this embodiment, the first camera 42 is electrically connected to the photovoltaic panel 21 and the battery 222, the second camera 52 is electrically connected to the photovoltaic panel 21 and the battery 222, and the image manager is electrically connected to the photovoltaic panel 21 and the battery 222. connect.

The charge and discharge control circuit board 223 of the power balancing supply module 22 can compare the power generation of the photovoltaic panel 21 with the total power consumption of the required power supply components to regulate the charge and discharge of the photovoltaic panel 21 and the battery 222 in real time, where, Required power supply components include but are not limited to flat camera 42, filter camera 52, motor, and LCD screen 8:

1). When the power generated by the photovoltaic panel 21 is greater than the total power consumption of the required power supply components, the charge and discharge control circuit board 223 controls the photovoltaic panel 21 to simultaneously charge the required power supply components and the battery 222;

2). When the power generated by the photovoltaic panel 21 is less than the total power consumption of the required power supply components, the charge and discharge control circuit board 223 controls the photovoltaic panel 21 and the battery 222 to simultaneously supply power to the required power supply components;

3). When the power generated by the photovoltaic panel 21 is equal to the total power consumption of the required power supply components, the charge and discharge control circuit board 223 controls the photovoltaic panel 21 to directly supply power to the required power supply components;

In this way, the charge and discharge losses of the battery 222 can be minimized and the required power supply components can be ensured to be in a constant power temperature operating state.

The power balancing supply module 22 is provided with a charging interface 224 and a power extraction interface 221, which expands the use function of the welding mask. After performing welding operations, the welding mask is placed under the sun to generate electricity, and the generated electricity can be used for For use with mobile phones, mini fans and other electrical appliances, the battery 222 can also be charged through commercial power, and the welding mask can be used as a mobile power source.

In this embodiment, the mask also includes an observation eyepiece 9 for amplifying the real-time image on the LCD screen 8 to form a clear virtual image at a clear vision distance. The observation eyepiece 9 is installed on the mask body 1 and corresponds to the liquid crystal display device. Since when the operator wears the welding mask, the distance between the human eye and the mask body 1 is very short and cannot reach the visual distance, the real image of the LCD screen 8 can be amplified through the observation eyepiece 9 to form a clear image at the clear vision distance. The human eye can clearly observe the image presented on the LCD screen 8 through the eyepiece 9 .

In this embodiment, two of the 9 observation eyepieces are provided and installed in two mounting holes respectively. The front ends of the two observation eyepieces 9 face the LCD screen 8 . As shown in Figure 2, the observation eyepiece 9 includes a frame and two lenses installed on the frame. The two lenses are an eye lens for magnification and a field lens that can make the influence highly uniform. The eye lens and the field lens are spaced apart. Place the field lens closer to the LCD screen.

The welding mask also includes an illuminating lamp 6, which is installed on the outer side of the mask body 1 and located directly above the LCD screen 8. The illuminating lamp 6 is electrically connected to the photovoltaic panel 21 and the battery 222; the control button also includes an illuminating lamp. The control button 74 and the lighting lamp control button 74 are electrically connected to the lighting lamp 6 .

In this embodiment, the welding mask also includes a hinge 12 and a headband 13. The hinge 12 connects the headband 13 and the mask body 1, so that the mask body 1 can rotate relative to the headband 13 to facilitate the user to wear it. Compared with the hand-held Mask, this welding mask can free the user's hands so that the hands can cooperate and coordinate the work.

The present invention uses two camera devices to present the images before welding and during the welding process on the liquid crystal display screen in real time without the need for direct observation by human eyes, thereby preventing human eyes from looking directly at the arc and being harmed by harmful arc light. Specifically:

The flat camera device 4 can clearly capture images before welding and during arc ignition. The operator can use the images to check the position of the solder joint in time to avoid positional deviation of the solder joint during the arc ignition operation;

Through the filter camera device 5, the speed, direction and state of the molten pool during the welding operation can be clearly observed to better ensure the welding quality;

The LCD screen 8 can present the images captured by the two camera devices in real time, and can realize free switching between dual-screen and single-screen display; because the arc ignition process is short and emits infrared, ultraviolet and high-intensity visible light, dual-screen display is convenient The operator operates the arc ignition step and smoothly transitions between the arc ignition and bar transport steps;

The photovoltaic panel is a semiconductor material with a wide band gap that can convert all the light energy from ultraviolet to infrared light in the welding arc into electrical energy; the charge and discharge control circuit board 223 can be used according to the power generation amount of the photovoltaic panel 21 and The power consumption of the equipment controls the charge and discharge of the photovoltaic panel 21 and the battery 222 in real time. At the same time, after work, the welding mask is placed under the sun to generate electricity. The electricity generated can be used for mobile phones, mini fans and other electrical appliances. The battery 222 can also be charged through the mains power, and the welding mask can be used as a Use mobile power.

The above are only preferred embodiments of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made based on the patent scope of the present invention and the content of the specification should still be covered by the present invention. within the range.

Claims (8)

1. Self-powered breathable electric welding mask with double cameras, and is characterized in that: it comprises the following steps:

the mask body is provided with a first through hole and a second through hole; the mask body is further provided with an assembly cavity, and the first through hole and the second through hole are formed in the front side face of the assembly cavity;

the flat shooting device is used for shooting images of welding rod positioning and arc striking before electric welding and is arranged at the first through hole;

the filtering camera device is used for shooting the actual working condition in the electric welding process and is arranged at the second through hole;

the liquid crystal display device can independently or simultaneously display the real-time shooting images of the flat-light shooting device and the light filtering shooting device, and comprises a liquid crystal display screen, wherein the liquid crystal display screen is arranged on the inner side surface of the mask main body and is electrically connected with the flat-light shooting device and the light filtering shooting device;

the self-powered device comprises a photovoltaic cell panel and an electric power balance supply module, wherein the photovoltaic cell panel and the electric power balance supply module can convert all light energy from ultraviolet light to infrared light in electric welding arc light into electric energy, the photovoltaic cell panel is arranged on the outer side surface of a mask main body, the electric power balance supply module is arranged on the mask main body and comprises an electricity taking interface, a storage battery, a charge-discharge control circuit board and a charging interface, the photovoltaic cell panel is electrically connected with the charge-discharge control circuit board and the storage battery, the electricity taking interface and the charging interface are electrically connected with the charge-discharge control circuit board, and the photovoltaic cell panel and the storage battery are electrically connected with a liquid crystal display, a flat light camera device and a light filtering camera device;

the air-exchanging device is arranged on the outer side surface of the mask body and comprises a base and a filter cover which can be detachably connected to the base, the base is connected with the front surface of the mask body, an air outlet is arranged between the base and the mask body, the air-exchanging device further comprises a motor fixedly connected to the base and fan blades connected with the motor in a transmission way, and the photovoltaic cell panel and the storage battery are electrically connected with the motor;

the charge-discharge control circuit board can compare the generated energy of the photovoltaic cell panel with the total electric consumption of the liquid crystal display, the flat light camera device, the light filtering camera device and the motor so as to regulate and control the charge and discharge of the photovoltaic cell panel and the storage battery in real time:

1) When the generating capacity of the photovoltaic cell panel is larger than the total power consumption of the liquid crystal display screen, the flat light camera device, the light filtering camera device and the motor, the charge-discharge control circuit board controls the photovoltaic cell panel to charge the required power supply component and the storage battery at the same time;

2) When the generating capacity of the photovoltaic cell panel is smaller than the total power consumption of the liquid crystal display, the flat light camera device, the light filtering camera device and the motor, the charge-discharge control circuit board controls the photovoltaic cell panel and the storage battery to supply power to the required power supply component at the same time;

3) When the generating capacity of the photovoltaic cell panel is equal to the total power consumption of the liquid crystal display screen, the flat light camera device, the light filtering camera device and the motor, the charge-discharge control circuit board controls the photovoltaic cell panel to directly supply power to a required power supply component;

the liquid crystal display device also comprises an image manager, wherein the image manager is arranged in the assembly cavity and is electrically connected with the liquid crystal display screen, the photovoltaic cell panel and the storage battery; the electric welding mask also comprises a plurality of control buttons, wherein the control buttons are arranged on the outer side face of the mask body, each control button comprises an image switching button, an image amplifying button and an image shrinking button, and the image switching button, the image amplifying button and the image shrinking button are electrically connected with the image manager.

2. The self-powered inflatable strap dual-camera welding helmet of claim 1, wherein: the base is positioned below the front face of the mask body, and the base is obliquely arranged.

3. The self-powered inflatable strap dual-camera welding helmet of claim 1, wherein: the mask further includes an observation eyepiece for magnifying a real-time image of the liquid crystal display to form a clear virtual image at a clear viewing distance, the observation eyepiece being mounted to the mask body and corresponding to the liquid crystal display device.

4. The self-powered inflatable strap dual-camera welding helmet of claim 1, wherein: the flat shooting device comprises a first camera and a flat protection cover capable of transmitting all light rays, the flat protection cover is embedded in the first through hole, the first camera is fixedly connected to the inner side surface of the flat protection cover and transmits real-time images to the liquid crystal display device, and the first camera is electrically connected with the photovoltaic cell panel and the storage battery.

5. The self-powered inflatable strap dual-camera welding helmet of claim 1, wherein: the optical filtering camera device comprises a second camera and an optical filtering protective cover which can block infrared rays and ultraviolet rays and reduce visible light transmittance, the optical filtering protective cover is embedded in the second through hole, the second camera is fixedly connected to the inner side face of the optical filtering protective cover and transmits real-time images to the liquid crystal display device, and the second camera is electrically connected with the photovoltaic cell panel and the storage battery.

6. The self-powered inflatable strap dual-camera welding helmet of claim 1, wherein: the liquid crystal display screen is positioned between the flat light camera device and the light filtering camera device and positioned in the middle of the mask body.

7. A self-powered inflatable strap twin camera welding helmet as defined in claim 3, wherein: two mounting holes are formed in the rear side face of the assembly cavity, two observation eyepieces are arranged in number and are respectively arranged in the two mounting holes, and the front ends of the two observation eyepieces face the liquid crystal display.

8. The self-powered inflatable strap dual-camera welding helmet of claim 1, wherein: the electric welding mask also comprises an illuminating lamp, wherein the illuminating lamp is arranged on the outer side surface of the mask main body and is positioned right above the liquid crystal display screen, and the illuminating lamp is electrically connected with the photovoltaic cell panel and the storage battery; the control button further comprises an illumination lamp control button and a ventilation knob, wherein the illumination lamp control button is electrically connected with the illumination lamp, and the ventilation knob is electrically connected with the motor.