A sealed, anti-fog, breathable, protective eyewear

Abstract

The application discloses a sealed anti-fog breathable protective goggles, belongs to the technical field of goggles, and comprises a goggles main body, a breathable protection assembly, a driving shell and a conduction assembly. The ring-shaped air bag is arranged in the arched breathable groove, the air bag is inflated to block the channel, and the air bag is deflated to restore the ventilation, so that the flexible switching of the sealed and ventilated states is realized. The ring-shaped air bag is uniformly supplied with air or drawn back through the flow guide pipe and the driving pipeline. The whole driving is completely manually operated, and an external power supply is not needed. The conduction assembly utilizes the phase change material in the energy absorption and heat conduction box to collect the forehead surface heat, and the heat is conducted to the transparent high-heat-conducting film on the lens through the energy guide rod, the integrated plate, the energy guide column and the fog reduction frame, so that the fog layer condensation is inhibited, and the coating and the electric heating scheme are replaced. The sealed and anti-fog are synchronously triggered by the single-time dialing of the rotating handle through the air pressure linkage of the sealing rod and the driving pipeline, so that the operation is simple, and the function response is always consistent.

Description

Technical Field

[0001] This invention relates to the field of protective goggles technology, and in particular to a sealed, anti-fog, and breathable protective goggle. Background Technology

[0002] As an important component of personal protective equipment, goggles are widely used in chemical laboratory work scenarios. Their basic function is to provide a physical barrier for the wearer's eyes and surrounding facial area to block splashing liquids and other external media that may cause damage to the eyes. Existing goggles usually consist of lenses, frames, and a wearing structure for fixing them to the head. Some products have ventilation channels on the frames to allow air exchange between the inside and outside of the goggles, reducing the problem of fogging of the lenses during wear.

[0003] However, the requirements for ventilation and sealing have long been contradictory in existing goggle structures. While fixed ventilation holes in the frame can maintain airflow inside the goggle and suppress lens fogging under normal working conditions, liquid can easily enter the goggle through these holes when there is liquid splashing in the work environment, rendering the protective function ineffective. If the goggle is designed as a completely sealed structure to ensure isolation, the goggle frame seal will confine the eyes and surrounding skin within a very limited cavity. However, the skin around the eyes, such as the eyelids, below the brow bone, and upper cheek, will continue to experience transdermal water evaporation and other adverse reactions. A small amount of sweat releases water vapor into the lens cavity, and the heat from the face and body makes the air temperature inside the lens cavity higher than the outside environment temperature. However, the outer surface of the lens is directly exposed to the lower-temperature ambient air, causing the inner surface temperature of the lens to be significantly lower than the air temperature inside the lens cavity. Moisture cannot escape from the sealed cavity, and the humidity inside the lens cavity rises rapidly. When the dew point temperature exceeds the actual temperature of the inner surface of the lens, the water vapor condenses into a fog layer on the inner surface of the lens, resulting in severely blurred vision. The wearer is forced to frequently remove the goggles to wipe the lenses, during which time eye protection is completely interrupted, which introduces new safety risks.

[0004] Existing anti-fog methods either rely on anti-fog coatings or electric heating wires. The former suffers from the maintenance burden of the coating gradually failing after repeated wiping and requiring periodic recoating, while the latter increases the weight and structural complexity of the goggles due to the introduction of circuits, batteries, and wiring. In liquid splash environments, it also poses electrical safety hazards. Furthermore, none of the above solutions can achieve on-demand linkage switching between ventilation, sealing, and anti-fog functions in the same structure. Wearers often need to manually change different types of goggles or adjust each functional module one by one in different scenarios, which is cumbersome and the response speed is difficult to meet the immediate protection needs in emergency situations. Summary of the Invention

[0005] This invention provides a sealed, anti-fog, and breathable protective goggle, which can solve the problems in the prior art where the ventilation and sealing functions of goggles are contradictory, the lenses are prone to fogging in the sealed state, and existing anti-fog methods rely on coatings that are prone to failure or electric heating that poses safety hazards. Furthermore, the ventilation, sealing, and anti-fog functions cannot be switched in conjunction, resulting in cumbersome operation and slow response.

[0006] A sealed, anti-fog, and breathable protective goggle includes: a goggle body with a frame mounted on it, a lens mounted inside the frame, and a transparent, highly thermally conductive film mounted on the inner surface of the lens; a breathable protective assembly disposed on the frame of the goggle body, including multiple breathable slots formed on the frame and a blocking assembly disposed within the breathable slots, the blocking assembly selectively sealing the breathable slots to prevent external liquid from entering the goggle body; a drive housing mounted on the goggle body and connected to the blocking assembly via a pipe for supplying gas to drive the blocking assembly to seal or release the breathable slots; and a conductive assembly mounted on the goggle body, including a heat-absorbing assembly and a heat-conducting assembly, the heat-absorbing assembly being disposed at the point where the goggle body contacts the wearer's forehead to absorb and store heat from the body surface, and the heat-conducting assembly receiving heat from the heat-absorbing assembly and conducting it to the transparent, highly thermally conductive film to raise the temperature and prevent fogging.

[0007] Preferably, a rotating block is rotatably connected inside the drive housing, and extrusion cylinders are installed on both sides of the rotating block inside the drive housing. A rotating handle is fixedly connected to one end of the rotating block.

[0008] Preferably, a pair of first rotating recesses are installed around the outer perimeter of the rotating block, a sealing slider is slidably connected inside the extrusion cylinder, and a guide pipe connected to the extrusion cylinder is installed at one end of the extrusion cylinder. A second rotating recess is installed on the sealing slider, and the second rotating recess and the first rotating recess are hinged together by a rotating connecting rod. Preferably, the inner wall of the extrusion cylinder is fitted with a limiting pad that matches the sealing slider.

[0009] Preferably, the blocking component includes an annular airbag installed in a venting groove, the venting groove being arched in shape.

[0010] Preferably, a drive pipe is installed inside the goggle body, one end of the drive pipe is connected to a guide pipe, and the drive pipe is connected to an annular airbag. Preferably, the conductive component includes an energy-absorbing heat-conducting box mounted on the goggle body, and the energy-absorbing heat-conducting box contains a phase change material.

[0011] Preferably, the conductive assembly further includes a pair of defogging frames mounted on the goggle body, with multiple energy guiding rods mounted at one end of each defogging frame, an integrated plate mounted at the top of each energy guiding rod, and multiple energy guiding columns mounted at the top of the integrated plate.

[0012] Preferably, a heat insulation adjustment plate is slidably connected inside the goggle body, and a sealing cylinder connected to the other end of the drive pipe is installed therewith. A sealing rod is installed inside the sealing cylinder, and one end of the sealing rod is connected to the heat insulation adjustment plate.

[0013] Preferably, the heat insulation adjustment plate is inlaid with a plurality of heat-conducting blocks that match the energy-conducting rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution addresses the contradiction between ventilation and sealing in existing goggles. By opening an arched ventilation groove on the frame of the goggle body and installing an annular airbag in it, the elastic wall of the annular airbag adapts to the inner wall of the arch when it is inflated, completely sealing the channel section. When it is deflated, the airbag retracts and adheres to the groove wall to restore the channel opening. This allows the goggles to flexibly switch between ventilation and sealing states without sacrificing the gas exchange capacity under normal working conditions, and to establish a reliable sealing barrier in the event of liquid splash. The drive housing uses a crank-connecting rod transmission structure consisting of a rotating block, a first rotating concave block, a rotating connecting rod, a second rotating concave block, and a sealing slider to convert the rotational motion of the wearer turning the handle into the synchronous linear push-pull motion of the sealing slider in the compression cylinders on both sides. The gas is evenly supplied or drawn back to the annular airbags through the guide pipe and drive pipe. The entire air source drive is completed entirely by manual operation, without the need for an external air pump or electric device. It is compact in size and the output gas volume can be precisely controlled with the rotation stroke.

[0015] (2) This solution addresses the problems of existing anti-fog methods, such as the coating's easy failure requiring repeated coating, the increased weight and structural complexity of electric heating wires, and the potential electrical safety hazards in corrosive environments. By setting up a conductive component, the phase change material in the energy-absorbing heat-conducting box installed in the contact area of ​​the wearer's forehead absorbs the heat continuously emitted from the body surface. During the phase change process, the phase change material maintains its own temperature within a constant range, playing a stabilizing and buffering role against fluctuations in the heat source. Then, through the longitudinal conduction of the energy-conducting rod, the lateral homogenization of the integrated plate, and the release of the energy-conducting column to the transparent high thermal conductivity film on the inner surface of the lens through the defogging frame, the temperature of the transparent high thermal conductivity film is raised above the dew point to inhibit water vapor from condensing into fog inside the lens frame. The entire anti-fog process does not require any external power supply and does not involve coating loss or recoating. While eliminating electrical safety hazards, it avoids the burden of periodic maintenance.

[0016] (3) This solution addresses the problem that existing solutions fail to achieve on-demand linkage switching of ventilation, sealing, and anti-fog functions in the same structure, and that the wearer needs to operate each functional module one by one, resulting in cumbersome operation and slow response. The solution controls the opening and closing of the conduction link by the alignment or misalignment relationship between the heat-conducting block embedded in the heat insulation adjustment plate and the energy-conducting rod. The heat insulation adjustment plate is linked with the driving pipe by the sealing rod in the sealing cylinder through air pressure, so that the wearer can complete the sealing of the ventilation groove and the connection of the anti-fog conduction link at the same time by turning the handle once. Turning it in the opposite direction will simultaneously restore ventilation of the ventilation groove and cut off the heat conduction path to turn off the anti-fog function. The sealing and anti-fog functions share the same air pressure drive source and always respond synchronously in time. The operation logic is consistent with the actual protection requirements, and the wearer only needs to operate once to complete all state switching. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the goggle body provided by the present invention; Figure 2 This is a schematic diagram of the three-dimensional side view of the goggle body provided by the present invention; Figure 3 A schematic diagram of the internal three-dimensional structure of the drive housing provided by the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the rotating block provided by the present invention; Figure 5 A schematic diagram of the structure of the breathable protection component provided by the present invention; Figure 6 This is a schematic diagram of the annular airbag structure provided by the present invention; Figure 7 This is a schematic diagram of the energy guiding rod structure provided by the present invention; Figure 8 This is a schematic diagram of the conductive component structure provided by the present invention; Figure 9 This is a schematic diagram of the disassembled structure of the conductive component provided by the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Goggle body; 2. Breathable protection component; 3. Conductive component; 4. Drive housing; 21. Breathing groove; 22. Drive pipe; 23. Annular airbag; 31. Energy-absorbing and heat-conducting box; 32. Fog-reducing frame; 33. Energy-conducting rod; 34. Integrated plate; 35. Energy-conducting column; 36. Heat insulation adjustment plate; 37. Sealing rod; 41. Rotating handle; 42. Flow guide tube; 43. Rotating block; 44. First rotating recess; 45. Extrusion cylinder; 46. Sealing slider; 47. Second rotating recess; 48. Rotating connecting rod. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figures 1 to 2 As shown in the figure, an embodiment of the present invention provides a sealed, anti-fog, and breathable protective goggle, comprising: a goggle body 1, a frame mounted on the goggle body 1, a lens mounted inside the frame, and a transparent, highly thermally conductive film mounted on the inner surface of the lens; a breathable protective component 2, disposed on the frame of the goggle body 1, including multiple breathable grooves 21 formed on the frame and a blocking component disposed within the breathable grooves 21, the blocking component being used to selectively seal the breathable grooves 21 to prevent external liquid from entering the interior of the goggle body 1; a drive housing 4, mounted on the goggle body 1, connected to the blocking component via a pipeline, for supplying gas to drive the blocking component to seal or release the breathable grooves 21; and a conductive component 3, mounted on the goggle body 1, including a heat-absorbing component and a heat-conducting component, the heat-absorbing component being disposed at the contact point between the goggle body 1 and the wearer's forehead, for absorbing and storing heat from the body surface, and the heat-conducting component being used to receive the heat from the heat-absorbing component and conduct it to the transparent, highly thermally conductive film to raise the temperature and prevent fogging.

[0021] One fundamental contradiction that goggles face in actual use is that the frames need to be equipped with ventilation channels to expel the hot and humid air accumulated in the goggle cavity due to the transdermal evaporation of moisture from the skin around the eyes and the slight sweating. However, if liquid splashes occur in the working environment, these open channels will become pathways for harmful substances to enter the goggles.

[0022] If the ventilation channel is made into a fixed opening, the protective capability will fail when most needed. If the lens body is made into a completely sealed structure, although it isolates external harm, the skin around the eye inside the lens cavity continuously releases water vapor into the sealed cavity through transdermal water evaporation and micro-perspiration. At the same time, the heat from the facial surface makes the air temperature inside the lens cavity higher than the outside temperature. Meanwhile, the outer surface of the lens is directly exposed to the lower-temperature ambient air, causing the inner surface temperature of the lens to be lower than the air temperature inside the lens cavity. When the humidity inside the lens cavity rises to the point where the dew point temperature exceeds the actual temperature of the inner surface of the lens, the water vapor condenses into a fog layer on the inner surface of the lens, affecting the clarity of vision.

[0023] In other words, ventilation and sealing are mutually exclusive in traditional structures, and wearers can only choose between the two and cannot achieve both simultaneously.

[0024] Based on this, the present invention provides multiple ventilation slots 21 on the frame of the goggle body 1 and sets a blocking component inside the ventilation slots 21 so that the ventilation channel has the ability to be shut off.

[0025] Under normal conditions, the blocking component does not occupy the channel cross section, and the vent 21 remains unobstructed, allowing normal air exchange between the inside and outside of the goggle. When sealing is required, the blocking component expands under gas pressure, filling and sealing the channel cross section of the vent 21, preventing external liquid from entering the goggle body 1 through the channel.

[0026] In this way, the ventilation slot 21 is no longer a fixed opening, but a controlled channel that can switch between ventilation and sealing at any time.

[0027] The air source driving this switching action comes from the drive housing 4 installed on the goggle body 1. The drive housing 4 is connected to various blocking components through pipes. The wearer can operate the drive housing 4 to deliver gas into the pipes or draw gas back, thereby driving the blocking components to seal or unseal the ventilation slot 21.

[0028] The entire process is completed by manual mechanical transmission. The air output corresponds directly to the operating stroke, without relying on external power or air pump. While maintaining a compact structure, it ensures immediate response.

[0029] After solving the problem of switching between ventilation and sealing, the next issue to address is the fogging of lenses in the sealed state.

[0030] Once the lens is sealed, the water vapor continuously released from the skin around the eye into the lens cavity is trapped in the relatively limited closed cavity. The humidity inside the lens cavity rises rapidly, while the temperature of the inner surface of the lens is lower than the dew point of the air inside the lens cavity due to the influence of the low temperature of the ambient air on the outside. As a result, the water vapor condenses into a fog layer on the inner surface of the lens.

[0031] Traditional methods either rely on anti-fog coatings, but these coatings gradually wear down with use and require repeated application and maintenance; or they use electric heating wires to heat the lenses, but this introduces electrical components, increases weight and structural complexity, and poses safety hazards in humid or corrosive environments.

[0032] Both of these approaches essentially involve adding an independent anti-fog measure after sealing, and they lack an inherent connection with the sealing function.

[0033] The conductive component 3 of the present invention adopts a different approach. When the wearer wears the goggles, the forehead and the upper edge of the frame are always in close contact, and the area continuously dissipates body heat. This heat is completely wasted in traditional goggles.

[0034] The heat-absorbing component in the conduction component 3 is located at the point where the goggle body 1 contacts the wearer's forehead. It absorbs and stores the heat that would otherwise be dissipated from the body surface, and then the heat-conducting component receives and conducts it step by step towards the lens. This raises the temperature of the transparent high thermal conductivity film installed on the inner surface of the lens to above the dew point, so that water vapor no longer has the conditions to condense. Thus, anti-fogging is achieved without consuming any external energy or relying on vulnerable coatings.

[0035] The sealing action itself triggers the conditions for fogging, and the conductive component 3 only needs to work in the sealed state. The timing of the functional requirements of the two coincides, which is the inherent motivation for integrating them into the same goggle structure.

[0036] like Figures 3 to 6 As shown, a rotating block 43 is rotatably connected inside the drive housing 4, and extrusion cylinders 45 are installed on both sides of the rotating block 43 inside the drive housing 4. A rotating handle 41 is fixedly connected to one end of the rotating block 43.

[0037] A pair of first rotating recesses 44 are installed around the outer perimeter of the rotating block 43. A sealing slider 46 is slidably connected inside the extrusion cylinder 45, and a guide pipe 42 connected to it is installed at one end of the extrusion cylinder 45. A second rotating recess 47 is installed on the sealing slider 46. The second rotating recess 47 and the first rotating recess 44 are hinged through a rotating connecting rod 48. A limiting pad matching the sealing slider 46 is installed on the inner wall of the extrusion cylinder 45.

[0038] The blocking component includes an annular airbag 23 installed in the venting groove 21, the shape of which is arched.

[0039] The goggle body 1 is equipped with a drive pipe 22. One end of the drive pipe 22 is connected to the guide pipe 42, and the drive pipe 22 is connected to the annular airbag 23.

[0040] In actual use, the environmental conditions faced by the wearer of goggles are not constant. For example, during the preparation stage before a chemical reaction, the inside of the goggles needs to continuously exchange gases with the outside world in order to expel the hot and humid gases generated by the transdermal evaporation of water and the slight sweating of the skin around the eyes, so as to prevent fogging on the inner surface of the lens and maintain clear vision. Before the chemical reaction begins, the goggles must be sealed as soon as possible, because the reaction may cause liquid splashing, thus preventing harmful media from entering through the vents.

[0041] These two needs occur alternately, and there is often not enough preparation time to switch between them. Neither a normally open channel nor a fixed closed structure can meet them at the same time. Although a normally open channel provides good ventilation, it loses its protective function once splashed. Although a fixed closed structure provides reliable isolation, it causes a large amount of fog to accumulate on the inside of the lens, which severely obstructs vision.

[0042] What's even more troublesome is that once the ventilation channel is sealed, the air inside the lens no longer flows. Water vapor released into the lens cavity through transdermal water evaporation and micro-perspiration from the skin around the eyes has nowhere to escape. At the same time, the heat from the facial surface keeps the air temperature inside the lens cavity higher than the external environment. Meanwhile, the inner surface of the lens is colder because the outer surface is exposed to the low-temperature air. When the dew point temperature of the air inside the lens cavity exceeds the actual temperature of the inner surface of the lens, water vapor condenses rapidly on the inner surface of the lens.

[0043] The real issue to be addressed is not simply the sealing or anti-fogging problem, but rather the ability to seamlessly switch between ventilation, sealing, and anti-fogging functions on a single goggle, with the switching operation being quick and easy for the wearer.

[0044] In this embodiment, a ventilation groove 21 is provided on the main body 1 of the goggles. The cross-sectional shape of the ventilation groove 21 is set to an arch shape, and an annular airbag 23 is installed in the ventilation groove 21 as a blocking component.

[0045] When the annular airbag 23 is not inflated, it shrinks in volume and adheres to the arched inner wall of the ventilation groove 21. The center of the arched channel leaves a sufficient airflow section. At this time, the goggles are in ventilation mode, and the gas inside and outside the goggles can be freely exchanged. Water vapor released by the skin around the eyes is continuously discharged with the airflow, and the risk of fogging on the inner surface of the lens is low.

[0046] When it is necessary to switch to a sealed state, gas is injected into the annular airbag 23. The annular airbag 23 expands radially toward the center of the arched channel of the venting groove 21. Under the action of internal pressure, the elastic bladder wall fits tightly against the arched inner wall of the venting groove 21 until the channel cross section is completely blocked. Even if the liquid splashed from the outside reaches the outer opening of the venting groove 21, it cannot pass through the expanded airbag and invade the mirror body.

[0047] The use of airbags instead of rigid baffles for sealing is because airbags, after inflation, have a much better ability to conform to irregular curved surfaces than rigid components, resulting in higher sealing reliability. At the same time, the elastic material can return to its initial shape by its own rebound during repeated inflation and deflation, avoiding the wear and degradation problems of mechanical snap-fit ​​structures.

[0048] The inflation and deflation of the annular airbag 23 requires a compact and controllable air source drive structure. As the goggles are lightweight devices worn close to the body, it is not feasible to use an external air pump or electric device due to their size and weight. Therefore, the drive mechanism must be completely manual, highly integrated, and have precise control over the output air volume.

[0049] Therefore, a drive housing 4 is installed on the main body 1 of the goggles. A rotating block 43 is rotatably connected inside the drive housing 4. One end of the rotating block 43 is fixedly connected to a rotating handle 41 that extends out of the housing, which can be directly turned by the wearer with their finger.

[0050] Extrusion cylinders 45 are installed on both sides of the rotating block 43 inside the drive housing 4. A pair of first rotating recesses 44 are installed on the outer periphery of the rotating block 43. A sealing slider 46 is slidably connected inside each extrusion cylinder 45. A second rotating recess 47 is installed on the sealing slider 46. The second rotating recess 47 and the corresponding first rotating recess 44 are hinged by a rotating connecting rod 48.

[0051] When the wearer turns the handle 41 to rotate the rotating block 43, the first rotating concave block 44 produces an eccentric motion. This motion is transmitted to the second rotating concave block 47 through the rotating connecting rod 48, which in turn drives the sealing slider 46 to make a linear push-pull motion in the extrusion cylinder 45.

[0052] The two extrusion cylinders 45 are symmetrically arranged on both sides of the rotating block 43. Every time the rotating block 43 rotates for one stroke, the two sealing sliders 46 simultaneously advance towards the inner cavity of their respective extrusion cylinders 45 and synchronously compress the air in the cavity.

[0053] The inner wall of the extrusion cylinder 45 is equipped with a limiting pad that matches the outer edge of the sealing slider 46. The limiting pad ensures the airtightness of the inner cavity of the extrusion cylinder 45 during the sliding of the sealing slider 46 to avoid air pressure loss. At the same time, it applies physical constraints to the end point of the stroke of the sealing slider 46 to prevent the slider from overshooting due to inertia and causing a rigid impact with the cylinder wall during rapid operation.

[0054] Each extrusion cylinder 45 has a guide tube 42 connected to it at one end. The goggle body 1 has a drive pipe 22 installed inside it. One end of the drive pipe 22 is connected to the guide tube 42, and the other end is connected to the annular airbag 23, forming a closed air passage from the extrusion cylinder 45 through the guide tube 42 and the drive pipe 22 to the annular airbag 23.

[0055] When the handle 41 is turned in the inflation direction, the sealing sliders 46 on both sides simultaneously compress the air in the extrusion cylinder 45. The gas is injected into the annular airbag 23 along the above-mentioned air path. The airbag expands and seals the ventilation groove 21, and the goggles switch to the sealed protection state. When the handle 41 is turned in the opposite direction, the sealing slider 46 retracts, the inner cavity of the extrusion cylinder 45 expands to form a negative pressure, the gas in the annular airbag 23 is drawn back, the airbag contracts, and the ventilation groove 21 reopens to restore ventilation.

[0056] The two extrusion cylinders 45 always output or retract synchronously, so that the annular airbags 23 in each venting groove 21 expand or contract evenly, avoiding insufficient air supply on one side leading to local sealing failure. Its fixation is achieved by the static friction limit generated by the abutment between the limiting pad installed on the inner wall of the extrusion cylinder 45 and the sealing slider 46.

[0057] like Figures 7 to 9 As shown, the conductive component 3 includes an energy-absorbing heat-conducting box 31 installed on the goggle body 1, and a phase change material is disposed inside the energy-absorbing heat-conducting box 31.

[0058] The conductive assembly 3 also includes a pair of fog-reducing frames 32 mounted on the goggle body 1. Multiple energy guide rods 33 are mounted on one end of the fog-reducing frames 32, and an integrated plate 34 is mounted on the top of the multiple energy guide rods 33. Multiple energy guide columns 35 are mounted on the top of the integrated plate 34.

[0059] A heat insulation adjustment plate 36 is slidably connected inside the goggle body 1. A sealing cylinder connected to the other end of the drive pipe 22 is installed. A sealing rod 37 is installed inside the sealing cylinder. One end of the sealing rod 37 is connected to the heat insulation adjustment plate 36. Multiple heat-conducting blocks matching the energy-conducting rod 33 are embedded on the heat insulation adjustment plate 36.

[0060] When the goggles are in a sealed protective state, the air exchange between the inside and outside of the lens is interrupted after the ventilation groove 21 is blocked by the annular airbag 23. The inner surface of the lens is very easy to condense and form a fog layer, which causes the wearer's vision to blur rapidly.

[0061] Existing anti-fog methods typically revolve around two paths: one is to coat the lens surface with an anti-fog coating to reduce the surface tension of water droplets so that they spread out rather than condense into fog beads; the other is to raise the surface temperature of the lens above the dew point using an electric heating wire to prevent condensation from occurring.

[0062] The former works well in the early stages of use, but the coating gradually fails after repeated wiping and contact with humid environments, requiring regular recoating, which results in high maintenance costs and operational burdens. The latter, while having a longer-lasting effect, introduces additional circuitry, batteries, and wiring, increasing the overall weight and complexity of the goggles and posing electrical safety hazards in work scenarios with liquid splashes.

[0063] It is worth noting that when wearing goggles, the forehead area is always in close contact with the upper edge of the goggle. The heat that the human body continuously emits outward is directly dissipated onto the surface of the goggle shell without any intervention. This heat itself has a certain energy density, but it is never utilized.

[0064] If this portion of the body surface heat that would otherwise be wasted can be collected and directed to the lens, so that the local temperature of the lens can be moderately raised above the dew point, the condensation process of water vapor can be effectively suppressed. The entire process does not require any external power source, nor does it involve the loss or recoating of the coating.

[0065] Based on the above ideas, this embodiment sets up a conduction component 3 to complete the collection, storage and directional transfer of body surface heat.

[0066] The conductive component 3 includes an energy-absorbing heat-conducting box 31 installed on the goggle body 1. The energy-absorbing heat-conducting box 31 is positioned in the area where the wearer's forehead contacts the goggle body, and its interior is filled with a phase change material.

[0067] The introduction of phase change materials is not only for the purpose of heat storage capacity. More importantly, the amount of heat dissipation from the human forehead varies with individual differences and movement. If the heat from the body surface is directly transferred to the transparent high thermal conductivity film on the inside of the lens without buffering, the temperature at the end of the conduction path will fluctuate with the heat source, making it difficult to guarantee the stability of the anti-fog effect.

[0068] When a phase change material absorbs heat and reaches its phase change temperature, it undergoes a phase transition. During the phase change process, its own temperature is maintained within a relatively constant range, which is equivalent to inserting a temperature stabilizing link between the heat source and the conduction path, so that the heat output subsequently transferred to the lens area tends to be stable.

[0069] The conductive component 3 also includes a pair of anti-fog frames 32 installed on the goggle body 1, with the two anti-fog frames 32 corresponding to the left and right sides of the goggle lens, respectively.

[0070] The areas on a lens most prone to fogging are usually not concentrated at a single point, but rather distributed over a large area along the inner surface of the lens. Direct radiation from a single heat source is insufficient to cover the entire foggy area. Therefore, the heat stored in the energy-absorbing heat-conducting box 31 needs to be gradually extended through the intermediate structure and then applied to the transparent, highly thermally conductive film installed on the lens via the fog-reducing frame 32.

[0071] Each fog-reducing frame 32 has multiple energy-conducting rods 33 installed at one end. These multiple energy-conducting rods 33 serve as the intermediate path for conducting heat from the energy-absorbing and heat-conducting box 31 towards the lens.

[0072] An integrated plate 34 is mounted on the top of multiple energy-conducting rods 33. Heat from each energy-conducting rod 33 is gathered at the integrated plate 34 and diffused evenly along the plate surface, eliminating local temperature differences that may occur due to differences in the length or contact state of each energy-conducting rod 33.

[0073] Multiple energy-conducting pillars 35 are installed at the top of the integrated plate 34. The energy-conducting pillars 35 extend to a position adjacent to the inner surface of the lens, releasing the heat homogenized by the integrated plate 34 to the energy-conducting rod 33. The heat is then applied to the transparent high thermal conductivity film through the energy-conducting rod 33, raising the air temperature in this area above the dew point. Under this temperature condition, water vapor no longer has the thermodynamic conditions to condense into fog, and the clarity of the lens is maintained.

[0074] The entire heat transfer path starts from the energy-absorbing heat-conducting box 31, is conducted longitudinally through the energy-conducting rod 33, homogenized laterally by the integrated plate 34, and released at the end of the energy-conducting column 35, forming a complete link that unfolds step by step from the heat source to the action surface. Each stage has its irreplaceable function.

[0075] It should be noted that the phase change material filled in the energy-absorbing and heat-conducting box 31 in this embodiment is a paraffin-based microcapsule phase change material with a phase change temperature in the range of 30 to 32°C. Its phase change temperature is only about 1 to 4°C lower than the skin surface temperature, and the temperature difference is gentle, so the wearer will not experience local coldness. At the same time, the surface temperature of the phase change material remains basically constant during the phase change process, so the comfort of the forehead can remain stable during long-term wear.

[0076] The effective contact area between the forehead and the energy-absorbing heat-conducting box 31 is approximately 35–45 cm². The local heat flux density of human skin in a resting and slightly active state is typically in the range of 40–80 W / m². Therefore, the continuously obtainable heat power is approximately 0.15–0.35 W.

[0077] In this embodiment, the transparent high thermal conductivity film covering the inner surface of the lens is a few-layer graphene film prepared by chemical vapor deposition, typically with 1 to 5 layers and a corresponding physical thickness of approximately 0.34 to 1.7 nm.

[0078] The transmittance of single-layer graphene in the visible light band (380-780nm) is about 97.7%, and the transmittance of 5-layer graphene can still be maintained above 88%, which is comparable to the transmittance level of ordinary optical resin lenses, and fully meets the requirements of goggles 1 for visual clarity.

[0079] The in-plane thermal conductivity of few-layer graphene films can reach 600-2000 W / (m·K), which can rapidly expand the heat transferred from the defogging frame 32 along the film surface direction and eliminate the temperature blind zone between the film and the heat dissipation source.

[0080] In addition, graphene surfaces have natural hydrophobic properties, so even if the temperature in a local area momentarily approaches the dew point, water vapor tends to form discrete tiny droplets rather than a continuous water film.

[0081] Furthermore, graphene is chemically stable in a humid and hot environment of 20–35°C and does not undergo oxidative degradation. As an alternative, transparent high thermal conductivity films can also be made of indium tin oxide films deposited by magnetron sputtering, with a typical thickness of 100–300 nm, visible light transmittance of 85%–92%, and thermal conductivity of about 8–12 W / (m·K). Its large-area curved surface sputtering process is mature and more suitable for mass production.

[0082] When the goggles are sealed, the volume of the closed cavity inside the lens is usually between 60 and 120 mL. When the humid and hot gas emitted from the wearer's face raises the temperature of the air inside the lens to about 32°C and the relative humidity is between 75% and 85%, the corresponding dew point temperature is about 27 to 29°C. However, under the condition of an ambient temperature of 20 to 25°C, the temperature of the inner surface of the lens is about 22 to 26°C, which is lower than the dew point. Water vapor condenses into fog when it comes into contact with the lens surface.

[0083] The heat collected by the heat-absorbing and heat-conducting box 31 is transferred to the defogging frame 32 through the energy-conducting rod 33, the integrated plate 34, and the energy-conducting column 35. The defogging frame 32 is made of thermally conductive material and maintains a small gap with the transparent high thermal conductivity film on the inner surface of the lens. The heat is transferred to the transparent high thermal conductivity film through the coupling of thermal radiation and interstitial air micro-layer conduction.

[0084] Since the transparent, highly thermally conductive film is directly coated on the inner surface of the lens, the film temperature is the same as the inner surface temperature of the lens. After the film gains heat, its temperature rises above the dew point, and water vapor no longer has the conditions to condense when it comes into contact with the surface, so the fog layer cannot be formed.

[0085] Therefore, relying solely on the heat continuously radiated from the wearer's forehead, after being stabilized and buffered by the energy-absorbing heat-conducting box 31, it is transferred along the energy-conducting rod 33, the integrated plate 34, and the energy-conducting column 35 to the defogging frame 32, and then coupled to the transparent high thermal conductivity film on the inner surface of the lens to keep its temperature above the dew point. This effectively suppresses water vapor condensation into fog without the aid of any external power source, ensuring that the wearer has a clear field of vision while in a sealed protective state.

[0086] It should be noted that fogging of goggle lenses can also occur on the outer surface. Fogging on the outer surface usually occurs in high humidity environments when the temperature of the outer surface of the lens is lower than the dew point of the ambient air. Since the outer surface is always accessible, the wearer can wipe it directly to restore clarity without removing the goggles, making it relatively easy to handle.

[0087] Fogging on the inner surface occurs after the lens is sealed. The skin around the eyes continuously releases water vapor into the limited lens cavity through transdermal water evaporation and micro-perspiration. At the same time, the heat from the facial surface makes the air temperature inside the lens cavity higher than the outside temperature. Since the outer surface of the lens is exposed to the low-temperature environment, the temperature of the inner surface of the lens is relatively low. When the dew point of the air inside the lens cavity exceeds the temperature of the inner surface of the lens, the water vapor condenses into a fog layer on the inner surface of the lens. Due to the structural limitations of the sealed goggles, the wearer cannot wipe the inner surface without removing the lenses. Therefore, fogging on the inner surface is the core problem that truly needs to be solved through structural means in sealed protection scenarios, and it is also the target of the conductive component 3 of this invention.

[0088] However, the anti-fog function is not necessary to be turned on in all usage situations. When the ventilation channel 21 is in the open ventilation state, the air inside and outside the lens can circulate freely, and the hot and humid gas is continuously carried away by the airflow. The risk of the lens fogging is already at a low level. If body heat is still continuously introduced into the lens area at this time, it will not only cause unnecessary heat loss, but may also make the temperature in the vicinity of the lens too high, resulting in discomfort when wearing it.

[0089] Therefore, a controllable on / off node needs to be set in the conduction path so that the anti-fog function is only activated when the system is sealed.

[0090] A heat insulation adjustment plate 36 is slidably connected inside the goggle body 1, and multiple heat-conducting blocks that match the energy-conducting rod 33 are embedded on the heat insulation adjustment plate 36.

[0091] When the heat insulation adjustment plate 36 slides to the position where the heat-conducting block and the energy-conducting rod 33 are aligned, the heat in the energy-absorbing heat-conducting box 31 is transferred to the energy-conducting rod 33 without obstruction through the heat-conducting block, and reaches the lens area along the path of the integrated plate 34 and the energy-conducting column 35, and the anti-fog function is in the activated state.

[0092] When the heat insulation adjustment plate 36 slides to a position where the heat-conducting block and the energy-conducting rod 33 are misaligned, the heat insulation characteristics of the heat insulation adjustment plate 36 body will cut off the conduction link, and the heat cannot continue to be transferred to the lens, and the anti-fog function will be turned off.

[0093] The position switching of the heat insulation adjustment plate 36 and the sealing action of the vent groove 21 are synchronized through air pressure linkage.

[0094] The other end of the drive pipe 22 is equipped with a sealing cylinder that is connected to it. A sealing rod 37 is installed inside the sealing cylinder, and one end of the sealing rod 37 is connected to the heat insulation adjustment plate 36.

[0095] When the wearer turns the handle 41 to inflate the annular airbag 23 to seal the ventilation groove 21, the air pressure in the drive pipe 22 increases. This pressure also acts on the sealing rod 37 in the sealing cylinder, pushing the sealing rod 37 to move and causing the heat insulation adjustment plate 36 to slide to the position where the heat conduction block and the energy conduction rod 33 are aligned. The anti-fog function is activated along with the sealing action.

[0096] When the reverse operation causes the annular airbag 23 to ventilate and the ventilator 21 to resume ventilation, the air pressure in the pipeline decreases accordingly. After the pressure difference disappears, the sealing rod 37 returns to its original position, the heat insulation adjustment plate 36 slides back to the cut-off position, and the anti-fog function is turned off simultaneously.

[0097] Therefore, the sealing and anti-fog functions share the same air pressure drive source, which is triggered simultaneously by a single turn of the handle 41. The wearer does not need to operate the two functions separately. The timing ensures that the anti-fog function will definitely start when sealing and the heating will automatically stop when ventilation, and the operating logic is always consistent with the actual protection requirements.

[0098] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A sealed, anti-fog, and breathable protective goggle, characterized in that, include: The goggle body (1) has a frame installed on it, a lens is installed inside the frame, and a transparent high thermal conductivity film is installed on the inner surface of the lens. A breathable protective component (2) is provided on the frame of the goggle body (1), including a plurality of breathable grooves (21) opened on the frame and a blocking component provided in the breathable grooves (21). The blocking component is used to selectively seal the breathable grooves (21) to prevent external liquid from entering the interior of the goggle body (1). The drive housing (4) is installed on the goggle body (1) and is connected to the blocking assembly through a pipeline. It is used to deliver gas to drive the blocking assembly to seal or unseal the vent groove (21). The conductive component (3) is installed on the goggle body (1) and includes a heat-absorbing component and a heat-conducting component. The heat-absorbing component is located at the point where the goggle body (1) contacts the wearer's forehead and is used to absorb and store heat from the body surface. The heat-conducting component is used to receive the heat from the heat-absorbing component and conduct it to a transparent high thermal conductivity film to raise the temperature and prevent fogging.

2. The sealed, anti-fog, and breathable protective goggles as described in claim 1, characterized in that, A rotating block (43) is rotatably connected inside the drive housing (4), and extrusion cylinders (45) are installed on both sides of the rotating block (43) inside the drive housing (4). A rotating handle (41) is fixedly connected to one end of the rotating block (43).

3. The sealed, anti-fog, and breathable protective goggles as described in claim 2, characterized in that, A pair of first rotating recesses (44) are installed around the outer perimeter of the rotating block (43). A sealing slider (46) is slidably connected inside the extrusion cylinder (45), and a guide pipe (42) connected to one end of the extrusion cylinder (45) is installed thereto. A second rotating recess (47) is installed on the sealing slider (46), and the second rotating recess (47) and the first rotating recess (44) are hinged by a rotating connecting rod (48).

4. The sealed, anti-fog, and breathable protective goggles as described in claim 3, characterized in that, The inner wall of the extrusion cylinder (45) is fitted with a limiting pad that matches the sealing slider (46).

5. The sealed, anti-fog, and breathable protective goggles as described in claim 1, characterized in that, The blocking assembly includes an annular airbag (23) installed in a ventilating groove (21), the shape of which is arched.

6. The sealed, anti-fog, and breathable protective goggles as described in claim 1, characterized in that, The goggle body (1) is equipped with a drive pipe (22), one end of which is connected to the guide pipe (42), and the drive pipe (22) is connected to the annular airbag (23).

7. The sealed, anti-fog, and breathable protective goggles as described in claim 1, characterized in that, The conductive component (3) includes an energy-absorbing heat-conducting box (31) installed on the goggle body (1), and the energy-absorbing heat-conducting box (31) contains a phase change material.

8. The sealed, anti-fog, and breathable protective goggles as described in claim 7, characterized in that, The conductive component (3) also includes a pair of fog-reducing frames (32) installed on the goggle body (1). One end of the fog-reducing frame (32) is equipped with a plurality of energy guiding rods (33), and the top of the plurality of energy guiding rods (33) is equipped with an integrated plate (34). The top of the integrated plate (34) is equipped with a plurality of energy guiding columns (35).

9. A sealed, anti-fog, and breathable protective goggle as described in claim 6, characterized in that, A heat insulation adjustment plate (36) is slidably connected inside the goggle body (1). A sealing cylinder connected to the other end of the drive pipe (22) is installed. A sealing rod (37) is installed inside the sealing cylinder. One end of the sealing rod (37) is connected to the heat insulation adjustment plate (36).

10. A sealed, anti-fog, and breathable protective goggle as described in claim 9, characterized in that, The heat insulation adjustment plate (36) is inlaid with a number of heat-conducting blocks that match the energy-conducting rod (33).

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