49results about How to "Solve fogging" patented technology

The invention relates to an intelligent drilling television imaging instrument, which mainly consists of a main controller, an underground probe, an underground cable, a windlass, a hub, a stepper motor, a depth counter and a tripod. The main controller is used for collecting and storing the information such as image splicing, video, depth and azimuth angle; the underground cable is used for supplying power to the probe and transmitting a control order, video, angle and the like; the underground probe is used for shooting a picture and video and recording the underground azimuth angle and transmitting the information to an industrial control computer through the cable; the depth counter is used for recording the underground depth of the underground probe; the stepper motor is used for controlling the probe to ascend and descend at a constant speed. An open-type lens is directly arranged in the water, and no glass cover is arranged in front of the lens, so that a shot image of a well wall is clearer, and the color retention is more authentic; a combined-type light source is adopted, so that the well wall and the underground situation can be directly observed; by adopting the unique stepper motor and the depth counting hub device, the probe can be lowered and lifted at a constant speed, and the images are completely spliced; by introducing electronic rock core library software, an electronic rock core file is established.

The invention provides a visualized swinging kettle device for inhibiting pipeline hydrate blockage and a method, and belongs to the field of the flow safety control of oil and gas transporting pipelines. The device comprises a main high-pressure visual kettle, a driving control system, a gas and liquid injection and discharge system, a temperature control system and a data collection system. Themain high-pressure visual kettle is used for providing a full-visual condition and performing real-time observation on the change of the growth habit of a hydrate in a pipe. The driving control systemcan be used for accurately controlling the swinging frequency and angle of the main high-pressure visual kettle, to effectively simulate the flow, in a pipeline, of liquid. The air-cooling refrigeration of a low-temperature and constant-temperature chamber is adopted for the temperature control system, and the problem that the surface of the visual kettle is fogged is solved. The data collectionsystem is used for collecting the temperature and pressure change values, in generation and decomposition processes, and the image, in a dynamic process, of the hydrate. The visualized swinging kettledevice is applied to the search of hydrate pipeline blockage and inhibitor evaluation, is easy to set up, simple and convenient to operate, and low in manufacturing cost, and can be used for providing technical and data support for the problem of the flow safety guarantee of a deep-sea oil and gas pipeline in a transportation process.

A passenger compartment humidity control system is disclosed. In a powered state of a vehicle, an air-conditioning controller automatically acquires the temperature and relative humidity inside a passenger compartment in real time through an in-vehicle temperature sensor and an in-vehicle humidity sensor, and acquires the atmospheric temperature outside the vehicle and relative humidity signals, according to the allowable relative humidity threshold corresponding to the temperature inside the passenger compartment, the related controlled objects are automatically driven to complete the actionssuch as dehumidification, humidification and switching the air conditioning cycle modes in the passenger compartment, so as to control the relative humidity inside the passenger compartment to maintain at a reasonable level; at that same time, the temperature and the relative humidity of the area near the inner wall of a front windshield are detected according to a front windshield temperature and humidity detection module in the humidification process, and whether an air conditioning inner and outer circulation actuator and an air conditioning mode actuator need to be driven is calculated and confirmed. The signal source selection of the system is more reasonable, the passenger compartment can be controlled in the optimal humidity range, the fog problem of the front windshield caused bythe humidification process is simultaneously avoided, and the accurate control over the humidity of the passenger compartment is met.

The invention discloses a fixing structure of drying agents for an automobile lamp. The fixing structure comprises a rear cover and a pressing ring, a storage groove used for storing the drying agents is formed in the rear cover, the pressing ring is fixed on the rear cover to seal the drying agents in the storage groove, and a plurality of vent holes are formed in the pressing ring. The pressing ring is used for fixing the drying agents in the rear cover, the structure is convenient to mount, a worker can mount the structure as an accessory, the drying agents are firmly fixed and not prone to falling after assembling, the fogging problem of the automobile lamp can be effectively solved, and the drying agents are convenient to replace after moisture saturation inside the drying agents.

The invention provides optical glass with excellent precise molding properties, a refractive index of 1.46 to 1.53 and an Abbe number of 77 to 84. The optical glass comprises the following cations bymol: 10-30% of P<5+>,10-35% of Al<3+>, 1-20% of Ba<2+>, 15-35% of Sr<2+>, 1-20% of Ca<2+>, 0-10% of Gd<3+> and 0-10% of Na<+>, wherein a ratio of Sr<2+> / (Gd<3+> + Na<+>) is 1-30. The optical glass comprises the following anions: F<-> and O<2->. A ratio F<-> / P<5+> of the molar percentage of F<-> relative to the total amount of the anions and the molar percentage of P<5+> relative to the total amount of the cations is 2.5 or more. According to the invention, through reasonable adjustment of the ratio of components, the moldability of the optical glass is improved, the problems of damage and fogging in the molding process are overcome, and the yield of production of the optical element is greatly improved.

The invention relates to the technical field of car lamp manufacturing, in particular to an anti-fog car lamp and an automobile. The anti-fog car lamp includes a shell, a shell cover and a dehumidification mechanism, an opening is formed in the tail of the shell, the shell cover is arranged at the tail of the shell and used for covering the opening, and the shell and the shell cover form a first cavity; and the dehumidification mechanism is arranged in the first cavity, and includes a permeable film, a waterproof film and a water absorption material, one face of the permeable film is attachedto the opening, the other face of the permeable film is attached to the waterproof film, the permeable film and the waterproof film form a second cavity, the water absorption material is arranged in the second cavity, a drainage channel is arranged at one end of the second cavity, the drainage end of the drainage channel are arranged outside the first cavity, and the drainage channel is used for removing water vapor in the shell. According to the anti-fog car lamp and the automobile, the car lamp can be prevented from fogging, secondary fogging is avoided, the car lamp fogging phenomenon is effectively solve for a long time, and the safety of the automobile is improved.

The invention discloses an intelligent refrigerator which comprises a box body, a door body and a hinge structure which is in a rotatable connection with the box body and the door body, wherein a hinge cover which covers a top hinge is disposed on the top hinge of the hinge structure; and a camera used to shoot situations inside the refrigerator is also disposed in the hinge cover. According to the invention, the problem about fogging of the camera of the intelligent refrigerator and the problem of shooting blocking can be solved. In addition, a camera connecting wire bundle is connected to a control panel by a hinge hole; plastic parts and punched holes used for wire passing do not need to be added; the cost is low; and technologies are simple and reliable.

The invention discloses an automobile cabin and an automobile. The automobile cabin comprises a power assembly containing compartment, a rearview glass window assembly and a cabin glass cover assembly, wherein the power assembly containing compartment is located behind an automobile passenger compartment; the rearview glass window assembly is mounted between the automobile passenger compartment and the power assembly containing compartment and used for separating the power assembly containing compartment from the automobile passenger compartment; the space formed by the power assembly containing compartment and the rearview glass window assembly is covered with the cabin glass cover assembly. Heat emitted by a power assembly is reused; besides, a heating device for an automobile rearview window or a rear windshield is not needed, the fogging problem of the automobile rearview window is solved, the automobile manufacturing cost caused by adding the heating device of the rearview window is omitted, and meanwhile the automobile using cost caused by adding the heating device of the rearview window is avoided.

The invention discloses a motor vehicle headlamp assembly and a motor vehicle with the same. The headlamp assembly comprises a lamp housing, an ornament ring and a lens, wherein the ornament ring and the lens are respectively connected with the lamp housing; the ornament ring is provided with a through hole; light emitted from a lamp bulb is irradiated onto the side wall of the inner periphery above the lens through the through hole. According to the motor vehicle headlamp assembly and the motor vehicle, the ornament ring is provided with the through hole, so that the light emitted from the lamp bulb is irradiated onto the side wall of the inner periphery of the lens outside the ornament ring in a perpendicular incidence manner and a manner of reflecting by a retroreflector, so that the temperature of the area onto which the light is irradiated raises; meanwhile, the air fluidity of the side wall of the inner periphery can also be enhanced by means of the through hole, a flowing dead angle in the headlamp is eliminated, so that the problem of vehicle lamp fogging is solved, and a bright and attractive effect can be achieved during irradiation of a headlamp; the motor vehicle headlamp assembly and the motor vehicle are simple in structure and strong in practicability and have a remarkable anti-fogging effect.

The invention provides a control method and device for a vehicle air conditioning system, and the method comprises the steps: obtaining the temperature and humidity of air in a vehicle, and determining the dew point temperature according to the temperature and humidity of air in the vehicle; obtaining the temperature of vehicle window glass; calculating a temperature difference value between the dew point temperature and the window glass temperature, and determining a fogging possibility level according to the temperature difference value, the fogging possibility level representing a possibility degree that water vapor in the air in the vehicle is separated out and attached to the window glass; controlling an executing mechanism of the air conditioning system to execute a corresponding control strategy according to the fogging possibility level; wherein different fogging possibility levels correspond to different control strategies. When the difference between the temperature of the vehicle window glass and the dew point temperature is large, the air conditioning mechanism executes a corresponding gentle control strategy, and gentle temperature and humidity adjustment operation isconducted on air in the vehicle. Due to the fact that a gentle temperature and humidity operation strategy is adopted, the comfort of drivers and passengers can be improved.

The invention relates to a sealed type automobile anti-fog instrument. The sealed type automobile anti-fog instrument comprises a bottom plate, a shell body and an upper cover plate, wherein the bottom plate is fixedly connected with the shell body through a first bolt; the shell body comprises a heat conducting net, a graduated disc, an annular lug boss, a sealing ring, an oil sealing ring, a plurality of through holes and a drying cabin; the graduated disc and the sealing ring are mutually clamped; the heat conducting net comprises an annular wall plate, a supporting pillar arranged in the middle of the annular wall plate, a metal net arranged on the supporting pillar and a through hole through which a pointer rotary shaft passes; the upper cover plate comprises a glass panel and a metal ring for fixing the glass panel; the lower end of the upper cover plate and the upper end of the shell body are mutually connected through a second bolt. The sealed type automobile anti-fog instrument provided by the invention has a reasonable structure and has the advantages of high structure strength, good waterproof performance and rapid heat transferring speed; the problem of fogging of an automobile cab instrument is effectively solved.

The invention relates to the technical field of cameras. The invention further discloses an optical camera lens. The optical camera lens comprises a lens and a lens mount, the lens mount is provided with a through hole which is through up and down. An internal thread is arranged on the inner wall of the through hole; and the surface of the lens is provided with external threads. The lens is in threaded connection in the through hole; a groove is formed in one side of the lens mount; an opening penetrating up and down is formed in a position, corresponding to the lens, of the optical filter; and the bottom surface of the lens mount is provided with a pcb circuit board. According to the optical camera lens, the problem that the temperature of the camera is too high and the problem that the lens is fogged are solved through material replacement test argumentation, and a finished product is more durable than a PC material with the heat conductivity coefficient of 0.2 used in the existing market and is much lower than a metal material in price.

The invention provides an antifog panoramic camera and relates to the field of video monitoring. The antifog panoramic camera comprises a spherical bracket and a semicircular ball cover. The spherical bracket is provided with a group of camera shooting devices, and the semicircular ball cover comprises an outer cover, an inner cover and a top platform. A sealed arc-shaped space is reserved between the outer cover and the inner cover, the inner cover is internally provided with a sealed working space, the spherical bracket is positioned in the inner cover, the top platform is provided with a wireless charging transmitting circuit, the spherical bracket is provided with a wireless charging receiving circuit, the top platform is further provided with a hollow bent pipe communicated with the working space, and the hollow bent pipe is provided with a cooling device. The spherical bracket is further provided with a wireless transmitter, and the top platform is provided with a wireless receiving device matched with the wireless transmitter. Compared with the prior art, the camera can be completely sealed in the ball cover through a wireless charging technology and a wireless transmission technology, the problem of fogging inside the camera is avoided; the ball cover is in double-layer arrangement, and the fogging of the surface of the ball cover is greatly relieved.

The invention belongs to the field of biomedical polymer materials, and discloses a preparation method and application of a bionic high-adhesion long-acting antibacterial antifogging agent. The antifogging agent is prepared by the steps that firstly, a hydrophilic bionic high-adhesion polymer is prepared, then the hydrophilic bionic high-adhesion polymer coats a surface to be treated through a solution of the hydrophilic bionic high-adhesion polymer, so as to inhibit surface fogging and bacterium breeding. A hydrophilic bionic high-adhesion polymer solution is prepared by controlling key raw materials, a flow process and the like of the antifogging agent, and the hydrophilic bionic high-adhesion polymer solution can be used as a long-acting antibacterial antifogging agent for antifogging and antibacterial treatment on the surfaces of medical goggles lenses and the like, has good biological safety, and can effectively inhibit fogging and bacterium breeding on the surfaces of the goggles.

The invention discloses an anti-fogging rear tail lamp of an automobile. The anti-fogging rear tail lamp consists of a lamp shade (1), a lamp housing (2), a decorative frame (3) and a wiring harness assembly (4), wherein the decorative frame (3) is fixed on the lamp housing (2); the lamp shade (1) covers the upper part of the decorative frame (3) and is connected with the lamp housing (2) in a sealing way; the lamp housing (2) is connected with the wiring harness assembly (4) in the sealing way; a plurality of raised structures (35) are arranged outside outer walls of a turning lamp reflection bowl (33) and a reversing lamp reflection bowl (32), of the decorative frame (3); a plurality of strip decorative patterns (36) are arranged at external positions of a rear fog lamp reflection bowl (31) and a braking lamp reflection bowl (34); and ventilation ports (37) are formed in two ends of the decorative patterns (36). According to the anti-fogging rear tail lamp disclosed by the invention, the air flowability of the outer wall at the peripheral edge is enhanced by the ventilation ports and ventilating holes in the decorative frame, so that a flowing dead angle is eliminated; and by an anti-fogging coating on the lamp shade, the fogging problem of the automobile lamp is thoroughly solved, and the appearance of the automobile lamp is enabled to be more attractive.

An anti-fogging structure of an automobile tail lamp comprises a decoration frame body (1); a rear fog lamp reflective bowl (2), a combined reflective bowl (3) and a brake lamp reflective bowl (4) are arranged on the decoration frame body (1); and the anti-fogging structure is characterized in that the combined reflective bowl (3) is composed of a steering lamp reflective bowl (5) and a backup lamp reflective bowl (6), a plurality of protruding structures (7) are arranged on the outer wall of the combined reflective bowl (3), and the rear fog lamp reflective bowl (2) and the brake lamp reflective bowl (4) are symmetrically arranged on the two sides of the combined reflective bowl (3); a plurality of strip-shaped decoration patterns (8) are arranged on the outer portion of the rear fog lamp reflective bowl (2) and the outer portion of the brake lamp reflective bowl (4), and ventilation openings (9) are formed in the two ends of the strip-shaped decoration patterns; and according to the anti-fogging structure, the ventilation openings in the decoration frame and ventilation holes in the protruding structures enhance air liquidity of the peripheral edge and the side walls so as to remove flow blind angles, the problem of fogging of an automobile lamp is solved, and the appearance of the automobile lamp is more attractive.

The invention relates to a light distributing mirror of an anti-fog automobile lamp and the anti-fog automobile lamp. The light distributing mirror of the anti-fog automobile lamp is equipped with at least two layers of lenses, wherein a gap between adjacent two layers of lenses is in a sealed vacuum state; and among the adjacent two layers of lenses, the outer layer of lenses can completely or partially shade outer surfaces of the inner layer of the lenses. The lenses can be injection-molded, and are connected in an integrally injection-molded manner or are connected by outer edge welding. The anti-fog automobile lamp comprises a lamp body and the light distributing mirror of the anti-fog automobile lamp, wherein the light distributing mirror is fixedly connected to the lamp body; a lamp cavity is enclosed by the light distributing mirror and the lamp body; and a lamp bulb and a light reflecting mirror are mounted on the lamp body, and are positioned in the lamp cavity. The light distributing mirror can radically solve the fogging problem of the automobile lamp, and does not have phenomena of flowing, flow marks, failure, discoloration and the like.

The invention discloses an anti-fog vehicle lamp. The lamp includes a housing, a surface shield, a ventilating pipe and an anti-fog device; the housing is connected with the surface shield, a vent hole is formed in the housing, one end of the ventilating pipe is communicated with the vent hole, and the other end of the ventilating pipe is connected with the surface shield and communicated with a cavity formed by the housing and the surface shield; during work of a headlamp, air exchange is conducted between the interior of the headlamp and the exterior of the headlamp through the vent hole tobalance the pressure of the air in the headlamp, after the air is circulated, the air can be guided into the surface shield through the ventilating pipe, correspondingly air circulation of the surfaceshield is achieved, and fogging of the headlamp is avoided. In order to further improve the anti-fog effect of the headlamp, the anti-fog vehicle lamp also includes the anti-fog device, the anti-fogdevice includes an air blowing pipe, a fan and a humidity sensor, and the anti-fog device is mounted on the side, away from the surface shield, of the housing and arranged in the lamp; after the humidity sensor senses the internal humidity of the lamp, the anti-fog device blows air into the headlamp to accelerate the air circulation, and a fogging problem of the lamp is fundamentally solved.

The invention discloses a vehicle-mounted waterproof intelligent camera and an installation method thereof. The vehicle-mounted waterproof intelligent camera comprises a vehicle-mounted waterproof intelligent camera body which is composed of a camera face sell, a camera bottom shell, a camera press cover upper shell, a camera press cover lower shell, a bracket, a light plate and a camera. The installation method comprises the following steps of 1, fixedly installing the camera press cover lower shell on a platform via a screw or on a rear view mirror bracket via the bracket; 2, rotating the camera, thus allowing the camera to rotate in the camera face shell, and debugging to erect a shot image; and 3, locking the camera face shell via the screw. The vehicle-mounted waterproof intelligent camera is small and exquisite, and convenient to install; a mould hole is formed in the light plate, sealant is filled in the mould hole, and thus a waterproof function is achieved; the problem that glass sealing is prone to cracking, fogging and flooding is solved; and the vehicle-mounted waterproof intelligent camera is simultaneously applicable to inverse installation and upright installation, and is relatively convenient to install.

The invention discloses an anti-fog type anorectal endoscope. The anti-fog type anorectal endoscope comprises a shell; the shell is made of transparent materials, the shell is arranged to be of a bag structure, the interior of the shell is in a hollow state, a camera lens is arranged at one end of the shell, the camera lens is embedded in the shell, at least one heating element is arranged at the end, close to the camera lens, in the shell, and the heating elements are arranged on a fixed plate. The fixed plate is fixed in the shell, a lens is arranged at the center of the side, away from the heating element, of the fixed plate, the lens and the camera lens are located on the same horizontal plane, and the center of the camera lens coincides with the center of the lens; by arranging the anti-fog temperature control system and adopting a sectional type heating method, the camera lens of the endoscope is heated, the fogging problem of the endoscope is fundamentally solved, the imaging definition is improved, the examination efficiency is improved, and the focus examination accuracy is improved.

The invention relates to the technical field of intelligent household appliances, and discloses a method for controlling an air conditioner, which comprises the following steps: acquiring current environment information of an area where the air conditioner is located and activity information of a user in the area; determining a to-be-cleaned target object according to the current environment information or the current environment information and the activity information; and according to the activity information, a cleaning time period is determined, and the air conditioner is controlled to execute a target cleaning scheme in the cleaning time period so as to clean the target object. According to the method, the current environment information and the user activity information are effectively combined, and the air conditioner is controlled to operate within the determined cleaning time period. The problem that a user needs to use a bathroom, and the bathroom fogs is solved. The invention further discloses a device for controlling the air conditioner, the air conditioner and a storage medium.

The invention relates to a graft-modified high-molecular anti-fog coating as well as a preparation method and an application method thereof. The graft-modified high-molecular anti-fog coating is prepared from the following components: a long-chain polymer containing polyhydroxy functional groups, silane, a metal salt catalyst, a solvent and nano titanium dioxide, the preparation method comprises the following steps: dissolving the long-chain polymer containing polyhydroxy functional groups into the solvent at 80-95 DEG C, adding the metal salt catalyst, adding a preset proportion of silane according to the grafting rate, reacting at 45-65 DEG C, adding nano titanium dioxide, and continuously stirring to react, thereby obtaining the required product. The invention provides the graft-modified high-molecular anti-fog coating as well as the preparation method and the application method thereof. The metal salt is used as a catalyst, hydrophilic groups are grafted on the surface of the polymer in a grafting modification mode, compared with a cross-linking mode, the method is more stable and controllable, nano titanium dioxide particles are added for modification, water resistance and durability are improved, and the product is used for glasses, goggles, automobiles, bathrooms and the like, is widely suitable for macromolecule resin, glass, stone and other materials, and can solve thefogging problem.

The invention relates to an intelligent anti-fog moisturizing high-barrier storage and transportation preservative film. The preservative film comprises an anti-fog preservative film layer, an ethylene-removed preservative film layer, a first PE preservative film layer, a coolant layer and a second PE preservative film layer, wherein the inner surface of the anti-fog preservative film layer can bein direct contact with fruits and vegetables; the outer surface of the anti-fog preservative film layer is tightly connected with the inner surface of the ethylene-removed preservative film layer; the outer surface of the ethylene-removed preservative film layer is tightly connected with the inner surface of the first PE preservative film layer; the outer surface of the first PE film layer is tightly connected with the inner surface of the coolant layer; the outer surface of the coolant layer is tightly connected with the inner surface of the second PE preservative film layer. The preservative film is particularly suitable for replacing a preservative film which is easy to fog in a storage process; the after-ripening effect of ethylene on the fruits and vegetables is reduced, and the shelf life is prolonged; the preservative film is suitable for the fruits which need low temperature in the storage and transportation process; and the labor and material costs in the storage and transportation packaging process are reduced.

The invention belongs to the technical field of glasses anti-fogging, and provides a degerming and anti-fogging glasses wiping liquid and degerming and anti-fogging glasses cloth in order to solve theproblems of existing glasses anti-fogging and degerming. The degerming and anti-fogging glasses wiping liquid is prepared from the following raw materials in percentage by mass: 70% of glycerol, 8% of polyethylene glycol octylphenol ether, 12% of nano-titanium dioxide particles and 10% of ethanol. The degerming and anti-fogging glasses wiping liquid has the advantages of no toxicity, harmlessness, easily available and relatively cheap raw materials, simple preparation, obvious degerming and anti-fogging effects, realization of no fogging of lenses after use for 2-3 days, long sustainable usetime, and simplicity and convenience in use. The degerming and anti-fogging glasses wiping liquid is low in cost, easy to manufacture, good in effect and capable of well solving the problem that the glasses are fogged when a user wears a mask at low temperature. The degerming and anti-fogging glasses wiping liquid is easy to carry and good in anti-fogging effect, has a sterilization effect, and can help people to improve the comfort level of life. The degerming and anti-fogging glasses wiping liquid has the characteristics of easily available raw materials, simple and convenient preparation process, easiness in mastering and convenience in wide application, and also has a degerming function which is not considered in the prior art.

The invention provides a commodity purity detection method for a vertical air curtain cabinet, the vertical air curtain cabinet comprises an air curtain cabinet, cameras, an IOT module and a data processing center, the cameras are mounted on the inner sides of the left and right side plates of the air curtain cabinet, the cameras are wide-angle cameras, lenses of the cameras are set to be adjustable heating lenses, and the data processing center is connected with the IOT module. Detection is carried out through the following method: a data processing center sends a photographing instruction to an IOT module, and the IOT module controls a camera to photograph and sends a picture obtained by photographing to the data processing center; step 2) the data processing center obtains and processes pictures shot by the cameras on the left and right sides; and step 3) the data processing center extracts the original standard commodity distribution image from the database, compares the original standard commodity distribution image with the fused complete image, compares the feature information of each commodity one by one, and judges whether the commodity is a target commodity, and the method can deal with the current situation of a wide air curtain cabinet and accurately reflect the purity of the commodity.

The invention provides a mask which comprises a mask body, mask belts and a nose clamping strip; the mask body comprises mask surface cloth and return cloth, the mask surface cloth and the return cloth are integrally formed, and the return cloth is arranged on the face, facing a human body, of the mask surface cloth and surrounds the edge of the mask surface cloth; the nose clamping strip is arranged on the return cloth; each mask belt comprises an ear hanging end and connecting ends connected with the mask body, the connecting end of each mask belt is connected with the return cloth, a connecting line is formed at the connecting position, and the connecting lines of the mask belts and the return cloth coincide with the diagonal lines of the return cloth. According to the scheme, the problem that glasses are fogged due to the fact that a glasses wearer wears a mask can be effectively solved, and the use experience of the wearer can be effectively improved.

The invention aims to provide a flat plate heat collector with a demisting function. The flat plate heat collector can quickly remove water vapor in the flat plate heat collector so as to solve the problem of fogging of an existing flat plate heat collector. The flat plate heat collector comprises a back plate, a frame, a glass cover plate, a heat absorption plate core and a heat preservation layer, the glass cover plate is connected with the back plate through the frame, the heat absorption plate core and the heat preservation layer are located between the glass cover plate and the back plate, a cavity is formed between the heat preservation layer and the back plate, and an exhaust fan is installed between the heat preservation layer and the back plate. A plurality of exhaust pipes communicating with the cavity are installed on the back plate, and pipe openings of the exhaust pipes face downwards arranged.