53results about How to "Improve viewing effect" patented technology

The utility model relates to the technical field of showing stands, and provides a project cost drawing showing stand which comprises a base, a support and a drawing showing board. The support is vertically arranged on the base in a supported mode, the drawing display board is connected to the support, a flashing board is further arranged on the top of the support in a supported mode, the flashing board is located above the drawing display board and arranged opposite to the drawing display board, and the projection of the flashing board on the horizontal plane covers the projection of the drawing display board on the horizontal plane; a plurality of universal wheels are installed at the bottom of the base, and a plurality of balancing weights are further arranged on the base. The drawing has the effect of reducing the abrasion of the drawing while the drawing is conveniently used on a construction site.

The invention relates to the technical field of travel content recommendation, in particular to a travel content recommendation system based on meta universe, which comprises a travel content recommendation platform, a classification item matching unit, a refining matching unit, a content division unit and a video sorting unit, according to the method, reasonable recommendation is carried out on the text travel content of the meta universe in a layer-by-layer progressive mode, so that the matching degree of text travel content recommendation and the watching effect of the user are improved, and video division feedback analysis is carried out on the text travel content classification items interested by the user in an information feedback mode; therefore, the tendency of the user to the playing duration of the played video in the main recommendation item or the priority recommendation item is known from the historical perspective, the played video is further divided and matched, and playing sequence information processing recommendation analysis is deeply performed on the scenic spot popularity information. And reasonable travel content recommendation can be carried out according to the interest tendency of the user and the popularity of the scenic spot in the played video content.

The invention relates to the technical field of display screen control, solves the problem that in the prior art, effective rotation interaction control cannot be carried out on an LED magic cube display screen, and provides a rotation interaction display adjusting method, device and system of the LED magic cube display screen. The method comprises the following steps: acquiring interaction duration and real-time position information; obtaining a buckle position and a display screen orientation; the LED magic cube display screen is rotated, and when the LED magic cube display screen is rotated to a target buckling position, the orientation of a target display screen is determined; according to the real-time position information, the orientation of the display screen where the interaction position is located is compared with the orientation of the target display screen, a main display area and a secondary display area are determined according to the orientation comparison result and the comparison result of the interaction duration and the duration threshold value, and original display parameters of the main display area are adjusted to main display parameters. And adjusting the display parameter of the secondary display area to the secondary display parameter. According to the invention, a more flexible and diversified rotating interaction effect on the LED magic cube display screen can be realized.

The utility model relates to the technical field of display screens, in particular to a light-emitting diode (LED) display screen structure, which comprises a mounting mechanism, a light-emitting diode (LED) module and a light-emitting diode module, the moving mechanism is arranged on the mounting mechanism; the two supporting arms are arranged on the moving mechanism, and connecting shafts are arranged in supporting arm mounting holes; the two mounting pieces are rotationally mounted on the two connecting shafts respectively, and connecting rods are rotationally arranged on the mounting pieces; the two fixing seats are rotationally arranged on the two connecting rods respectively; the two display screens are respectively mounted on the two fixed seats; the adjusting mechanism is arranged on the mounting mechanism and is used for adjusting the working height of the two display screens driven by the moving mechanism; the adaptability is high, the operation is flexible, and the film watching effect is improved.

The utility model relates to the technical field of display board devices, and discloses an adjustable display board which comprises a fixing frame, a storage mechanism is arranged at the front end of the inner wall of the fixing frame, a base is arranged below the fixing frame, and an adjusting mechanism is fixedly connected to the upper end of the base. The storage mechanism comprises a fixing groove, the fixing groove is formed in the front end of the inner wall of the fixing frame, a first spring is fixedly connected to the front end of the inner wall of the fixing groove, a pressing plate is fixedly connected to the rear end of the first spring, and a connecting column is fixedly connected to the front end of the pressing plate. According to the adjustable display board, the fixing frame is used, and the pressing plate, the first spring and other parts are used in a matched mode, so that the pressing plate can compress the display board needing to be displayed through the elasticity of the spring, the display board can be fixed in the fixing frame through the use of the top cover, and when the display board is replaced and detached, use is very convenient; and the workload of operators is reduced.

The present invention relates to the field of liquid crystal display technology, and discloses a method, system, and chip for reducing the power consumption of a timing control chip of a liquid crystal panel, including obtaining historical viewing data of a user, building and training a user visual preference prediction model; collecting the user's visual attention data and display content data in real time, and determining the focus area on the liquid crystal panel in combination with the prediction model; dividing the liquid crystal panel into high, medium, and low resolution areas and setting corresponding pixel density and refresh frequency thresholds; performing visual saliency analysis on the display content to determine key salient areas and non-key salient areas; performing local refresh in different resolution areas, wherein the refresh frequency of the key salient area is higher than the refresh frequency of the non-key salient area. The system includes multiple modules to implement the above method. The chip adopts the system and method, and can effectively reduce the power consumption of the timing control chip of the liquid crystal panel.

The connector welding device with the positioning and clamping functions comprises a smoke suction welding structure installed on a positioning and clamping structure, the smoke suction welding structure comprises a hollow installation body with the interior being of a hollow structure, and a plurality of protruding limiting blocks for relative adjusting and limiting are arranged on one side of the hollow installation body in a surrounding mode; meanwhile, the hollow mounting body penetrates through the mounting ring through a convex limiting block and is connected with a guide limiting groove formed in the mounting ring, fixing rods mounted on the connecting ring are sequentially arranged on the outer ring of the mounting ring, and a welding head welded to the connector is arranged in the connecting ring; and a through hole facilitating connection of the corrugated pipe is formed in the welding head through one side of the connecting ring in a penetrating mode, meanwhile, one end of the corrugated pipe is connected with the fan, the fan and the purification filter box are mounted through the mounting frame, and the purification filter box and the hollow mounting body are both mounted on the mounting table. And through the arranged fixing rods, the connecting, stress and supporting effects are achieved.

The utility model relates to the technical field of oil painting display, in particular to an art oil painting display device which comprises a rotary supporting mechanism, the rotary supporting mechanism comprises a supporting column, a servo motor is fixedly connected to the interior of the supporting column, a motor shaft of the servo motor is in transmission connection with a transmission shaft, and a rotary disc is fixedly connected to the top end of the transmission shaft. The bottom face of the rotating disc is rotationally connected with the top face of the supporting column, a plurality of connecting bases are fixed to the outer wall of the rotating disc at equal angles, and mounting grooves are formed in the outer walls of the connecting bases. According to the oil painting display device, the servo motor, the transmission shaft and the rotating disc are arranged in a matched mode, so that 360-degree stable rotation can be achieved when an oil painting is displayed, and multi-angle viewing experience is provided for audiences. Through cooperative arrangement of the adjusting mechanism and the display mechanism, the device can display oil paintings of different sizes, and the angle of the display mechanism in the pitching direction can be adjusted, so that the watching effect is improved.

The embodiment of the invention provides near-eye display equipment, and relates to the technical field of augmented reality. The near-to-eye display equipment comprises a mirror frame, an imaging assembly and a correction structure, the imaging assembly comprises a light machine and a display lens which are arranged on the frame, and the light machine can emit light towards the display lens along a set light path; the display lens is provided with an environment side and a user side which are opposite, and the display lens can obtain light rays from the light machine and can emit light towards the user side along a set light path; the correction structure comprises a mounting frame and a correction lens; the mounting rack is detachably connected with the glasses frame; the correction lens is arranged on the mounting rack, and is positioned on the user side of the display lens when the mounting rack and the lens frame are fixed. According to the invention, the image formed by the near-eye display device on the retina of the user is clearer, and the watching effect of the user wearing the near-eye display device is improved.

The utility model relates to the technical field of data analysis and display, and discloses a data analysis and display multi-screen device which comprises a supporting table, a fixing frame is fixedly connected to the rear portion of the upper end of the supporting table, and moving grooves are formed in the front portion and the rear portion of the inner wall of the upper end of the fixing frame. And moving lead screws are rotationally connected between the inner walls of the opposite sides of the two moving grooves, first positioning grooves are formed in the positions, close to the front portion and the rear portion, of the upper end of the supporting table, first positioning rods are fixedly connected between the inner walls of the two sides of the two first positioning grooves, and the outer walls of the two moving lead screws are sleeved with moving sliding blocks in a threaded mode. According to the display device, the display split screens and the moving mechanism are arranged, so that the two display split screens can be unfolded towards the corresponding sides, the display main screen arranged in a matched mode can display the content to be displayed in a multi-screen mode, and the shielding frame, the fixing frame and the lifting mechanism are arranged, so that the display main screen and the display split screens can be fully shielded.

The utility model discloses a construction safety alarm, which relates to the technical field of safety construction and comprises a supporting bottom shell, a supporting base is fixedly mounted at the top of the supporting bottom shell, a telescopic column is fixedly mounted at the top of the supporting base, and a placement bottom plate is slidably mounted at the top of the telescopic column. And a liquid crystal display screen is fixedly mounted at the top of the placement bottom plate. Through mutual cooperation of the motor, the adjusting groove, the threaded rod, the threaded sleeve block, the cleaning brush, the supporting frame, the sliding groove, the sliding block and the connecting frame, the problem that a liquid crystal display screen on the alarm is usually arranged outdoors, the surface of the liquid crystal display screen is stained with a large amount of dust and sundries, and the watching effect of people on the liquid crystal display screen is poor is solved. According to the liquid crystal display screen, the function of convenient cleaning is achieved, dust and sundries attached to the surface of the liquid crystal display screen are effectively cleaned, manual cleaning is not needed, the watching effect of the liquid crystal display screen is improved, and information warning is better prompted for people.

The disclosed embodiments provide a transparent display device and a preparation method, which relate to the field of display technology and can improve contrast. The transparent display device includes a liquid crystal box and a light source arranged opposite to the side thereof. The liquid crystal box includes a first substrate, a second substrate, a first electrode on the first substrate, a second electrode on the first substrate or the second substrate, a liquid crystal layer, a plurality of signal lines and a shading pattern. The liquid crystal layer sandwiched between the first substrate and the second substrate includes polymer molecules and liquid crystal molecules, which are used to cause total reflection or scattering of light incident on the liquid crystal layer under the control of the electric field provided by the first electrode and the second electrode. At least one of the plurality of signal lines on the first substrate and in the display area has a bottom surface close to the first substrate and a reflective side surface connected to the bottom surface and facing the light source, and the slope angle formed by the reflective side surface and the bottom surface is an acute angle. The shading pattern is on the second substrate and on the reflection path after the light emitted by the light source is irradiated to the reflective side surface.

The utility model relates to the technical field of neotame processing, and discloses an automatic neotame feeding reaction kettle which comprises a reaction kettle body, a supporting frame and a feeding mechanism, the supporting frame is arranged on the other side of the reaction kettle body and connected with the feeding mechanism, a first motor is installed at the position, close to the upper end, of the middle of one side wall of the feeding mechanism, and a second motor is installed on the other side wall of the feeding mechanism. The output end of the first motor is connected with a transmission rod, the other end of the transmission rod is connected with a driving gear, the middle position of the lower side wall of the driving gear is meshed with a driven gear, and the driven gear is rotationally connected with a stirring assembly. According to the utility model, the driven gear acts on the stirring assembly for synchronous rotation, so that the problem that the neotame raw materials are moist due to environmental influence when the equipment is not used and are bonded together to influence the quality of the raw materials is avoided, and the neotame raw materials adsorbed on the inner wall of the feeding mechanism are scraped by the scrapers mounted on the two side walls of the stirring assembly, so that the stirring efficiency is improved. The raw material utilization rate is improved.

The invention discloses an augmented reality near-to-eye display device and method based on multiple layers of light guide plates. The augmented reality near-to-eye display device comprises a multi-layer light guide illumination device, a micro display device, a light source controller, an eye movement tracking device, a main control module and the like. The light sources in the double-layer or multi-layer light guide lighting device are sequentially lightened, the light guide plate receives light from the light sources and transmits the light, the light is emitted through the dot matrix lists on the light guide plate to form a point light source array and then illuminates the micro-display device, and the micro-display device synchronously displays two-dimensional images of the light guide plate on the corresponding layer and enters pupils of human eyes so that the corresponding images can be watched. A corresponding image sequence loaded to the micro-display device is calculated through the main control module, and images on different depth focusing planes are fused with a real scene, so that an augmented reality type three-dimensional image can be always seen in a human eye pupil movement process, and therefore, augmented reality near-to-eye display is realized; the problems of convergence adjustment conflicts and too small field angle in the near-to-eye display device are effectively solved.

The utility model relates to the technical field of furniture sales, and discloses a rotary display device for furniture sales, which solves the problem that the current furniture is easy to topple over and be damaged in the rotating process, and comprises a base, locking universal wheels are fixedly arranged at the bottom of the base close to four corners, and the locking universal wheels are arranged on the base. A rotating mechanism is installed at the top of the base, a limiting mechanism is installed on the rotating mechanism, the limiting mechanism comprises a placing table located above the base, and two L-shaped plates are symmetrically and fixedly installed on the outer side of the placing table; according to the utility model, through the cooperation among the motor I, the bidirectional lead screw and the nut, the two guide plates can slide along the two guide grooves respectively, then the two sliding plates can be close to each other, and through the cooperation among the movable rods and the sliding plates and the cooperation among the limiting discs and the springs, the limiting discs can be tightly attached to furniture; and therefore, the furniture can be conveniently clamped and limited, and the furniture is prevented from toppling and being damaged in the rotating process.

The invention discloses image acquisition equipment and an exposure control method and device. The image acquisition equipment comprises a controller, a digital signal processor and at least one image sensor group, the image sensor group comprises a first image sensor and a second image sensor which are longitudinally adjacent and have an overlapping area. The controller determines the exposure time difference of the first image sensor and the second image sensor; and according to the exposure time difference, respectively sending a frame synchronization signal to the first image sensor and the second image sensor. The first image sensor and the second image sensor respectively perform exposure according to the exposure starting time received by the first image sensor and the second image sensor, convert the received ambient light signal into an electric signal, and send the electric signal to the digital signal processor; and the digital signal processor is used for generating an image according to the received electric signal. Compared with a longitudinal splicing scheme in the prior art, the method has the advantages that the continuity when the moving object passes through the whole image splicing seam is improved, and the image watching effect is improved.

The utility model provides a metal screen, which comprises a screen base and an optical coating, and is characterized in that the screen base comprises microstructures which are uniformly distributed on the upper surface of the screen base, the microstructures are convex curved surfaces, the height H of each microstructure is 20-350 microns, the maximum diameter D of each microstructure is 20-2000 microns, the optical coating covers the screen base, and the optical coating covers the screen base. The thickness of the optical coating ranges from 1.5 micrometers to 35.0 micrometers. Through the combination of the unique optical coating and the unique screen base design, when the proper brightness gain is selected, the projection requirements of 2D movies and 3D movies can be met on the same screen, and the utilization rate of a movie hall is improved. On the premise that the same projection quality is obtained, the emergent angle of the screen is greatly improved compared with that of a traditional metal screen, the field angle of a projection place is improved, and the same movie hall can accommodate more movie watching people. Compared with a traditional metal screen, the manufacturing cost is lower, the service life is longer, and the quality is better. Especially in the field of 3D movie projection, a larger polarization contrast can be obtained with the same brightness gain.

This utility model belongs to the field of LED display technology and discloses an outdoor LED grid display screen, including multiple LED light source emitters arranged in a grid array. Each LED light source emitter includes an emitter body and a light source emitting head. One side of the emitter body is a mounting surface and is mounted on a mounting frame. Multiple light source emitting heads are correspondingly embedded on the end face of the emitter body away from the mounting surface. The light emitted by the light source emitting heads is emitted horizontally in a wide-angle manner. Each light source emitter is equipped with a reflector located above the light source emitting head. One end face of the reflector is an inclined mirror surface, with its lower end abutting against the end face of the emitter body away from the mounting surface and its upper end away from this end face, so as to reflect part of the light emitted upwardly by the light source emitting head in a horizontal direction. This grid display screen can reduce the upward tilt of light and reflect it in a horizontal direction, thereby improving the brightness of the light and the clarity of the display screen.

The utility model relates to the technical field of liquid crystal display screens, and discloses a liquid crystal display screen with a protective structure, which comprises a base and a frame, an angle adjusting mechanism is arranged on the upper surface of the base, and the angle adjusting mechanism comprises a supporting column, a U-shaped frame, a connecting shaft, a fixing plate, a bearing block and an inserting rod, the outer surface of one end of the supporting column is fixedly connected with the interior of the base. According to the liquid crystal display screen with the protection structure, a U-shaped frame, a connecting shaft, a fixing plate and a bearing block are used, a frame and a main body can be driven to change the viewing angle in practice, the positions of the frame and the main body after angle change can be limited through an inserting rod and an inserting groove, and through a penetrating plate and a limiting screw rod, the angle of the frame and the main body can be changed. And the position after the angle is changed can be fixed again, so that the problem of how to change the viewing angle of the main body is solved, the effect of wider viewing range can be achieved, and the viewing effect in reality is improved.

The utility model relates to the technical field of progress management devices, in particular to a convenient-to-watch progress management device, and solves the technical problems that in the prior art, most of existing progress management devices are installed in a fixed display area; the problems that when the number of audiences is large, the audiences located on the back row or the edge can not clearly see display content due to the fact that sight lines are blocked, a plurality of progress management devices need to be used and installed to enable the audiences to watch the display content, the use cost is high, and the practicability of the devices is reduced are solved. A progress management device facilitating watching comprises a base, supporting plates are arranged on the two sides of the top of the base, a mounting box is jointly and fixedly mounted on the tops of the two supporting plates, two display panels are symmetrically arranged below the mounting box and located between the two supporting plates, a mounting groove is formed in one side of the mounting box, and a motor is arranged in the mounting groove. According to the utility model, people in different directions can conveniently view at the same time, the use cost is reduced, and the viewing effect and practicability of the device are improved.

An airtight air brake for a ship belongs to the technical field of ship facilities. Comprising an air brake sleeve, a brake base is arranged in the air brake sleeve, a set of ventilation openings are formed in the brake base at intervals, gate plates are rotationally arranged at the ventilation openings respectively, and the multiple gate plates are in mutual linkage and are driven to rotate through a driving mechanism installed outside the air brake sleeve. A shaft body is arranged between the gate plate shaft seats in a penetrating mode, the two ends of the shaft body are rotationally fixed to the front surface of the gate seat through bearing seats respectively, a circle of sealing ring is arranged on the periphery of the gate plate, and when the gate plate and the gate seat are in a closed state, the sealing ring is squeezed by the gate plate and the inner side of the edge of a ventilation opening of the gate seat to form sealed connection. And the gate plate and the gate seat are positioned on the same horizontal plane in a closed state. The air brake has the advantages that sealing can be achieved under the condition that closing force is not needed when the flashboard is closed, the air tightness of the air brake is improved, the service life of the air brake is prolonged, and the appearance effect is good.

The utility model relates to the technical field of interactive multimedia equipment, in particular to an interactive multimedia micro exhibition hall which comprises a machine body, a display screen is fixedly arranged on one side of the machine body, a mounting groove is formed in one side of the machine body, and protective glass is arranged on the outer side of the mounting groove. When the device is displayed, due to long-time display, the device needs to be cleaned in the later period to guarantee the viewing effect of the device, the screen and the protective glass are cleaned by taking the brush, and the pull rope is fixedly arranged at one end of the brush rod, so that the pull rope can be contracted through the torsion spring after cleaning is completed to prevent the brush rod from being lost in the later period; and the brush head can be damaged during long-term mass use, and the cleaning effect is affected, so that push plates at the two ends of the brush rod are pushed at the same time to enable push rods fixedly connected with the push plates to move, push blocks are driven to move forwards to enable clamping blocks to leave inner grooves, the brush head is conveniently replaced or maintained, the cleaning effect of the device is better, and the practicability of the device is improved.

The utility model belongs to the technical field of management equipment, and discloses a project data management platform which comprises a supporting base, a supporting box body is arranged above the supporting base, a lifting assembly is arranged between the supporting box body and the supporting base, the lifting assembly comprises a sliding groove, a first motor and a supporting plate, and the sliding groove is formed in the top of the supporting base. Two-way lead screws are rotationally connected into the sliding grooves, a rotating shaft is rotationally connected between every two adjacent supporting plates, the two ends of each rotating shaft extend to the surfaces of the corresponding two adjacent supporting plates correspondingly and are fixedly connected with limiting plates, and two connecting rods are symmetrically arranged between the supporting box body and the supporting base; and the two ends of the connecting rod are fixedly connected to the outer portion of the rotating shaft, a rotating assembly is arranged in the supporting box body, and a management assembly is arranged at the top end of the rotating assembly. Compared with the prior art, a large amount of time is saved, the labor amount of a user is reduced, and the working efficiency is improved.

The utility model discloses a multifunctional mobile phone shell, aims to provide a multifunctional mobile phone shell, and aims to solve the technical problems in the prior art that the service life of a mobile phone is short due to heat accumulation of a mobile phone shell, and hands need to be liberated by means of a mobile phone support. The shell main body is rotatably connected with the shell cover through the connecting structure, a first placing position capable of placing a mobile phone or other electronic equipment is arranged on the shell main body, and a second placing position for accommodating the shell cover is arranged on one side, far away from the placing cavity, of the shell main body; a main body baffle is arranged between the first placing position and the second placing position, a plurality of heat dissipation holes are formed in the main body baffle, and when the shell cover rotates by a certain angle beta 1 relative to the shell body with the connecting structure as a rotating shaft to a certain position, external air can directly make contact with a machine body through the heat dissipation holes.

The utility model discloses a spliced VR (virtual reality) film watching container, which belongs to the technical field of film watching containers and comprises a container body, seats and screens are arranged in the container body, the seats and the screens are oppositely arranged, the number of the screens is at least two, and the adjacent screens are movably connected; the adjusting part is used for adjusting the angle of an adjacent screen and comprises a fixed profile, a hinge piece and an installation profile, the fixed profile is arranged in the height direction of the screen, the hinge piece is located at the end of the fixed profile, the installation profile is fixedly connected with the screen, and when the hinge piece rotates, the installation profile is located at the end of the fixed profile. And the mounting section bar is driven to deflect so as to adjust the angle between the adjacent screens. According to the utility model, VR film watching scenes are arranged in the container so as to meet the film watching requirements of young people, and the screens are mounted in the container in a splicing manner, so that the VR film watching requirements can be fully met, and the film watching experience of audiences is improved.

The invention relates to the technical field of naked-eye 3D, in particular to a naked-eye 3D implementation method and related equipment. The method comprises the following steps of: emitting a source image from a TFT-LCD (Thin Film Transistor-Liquid Crystal Display) display source of which the polarization direction is 135 degrees or 45 degrees; dividing the source image into two beams of light in different polarization directions by using a polarizing beam splitter converter, one beam being P light for forming a first image, and the other beam being S light for forming a second image; and the inclination direction of the polarization beam splitter converter is adjusted, so that the P light and the S light enter different optical paths respectively. The whole system is further focused and amplified by using the amplification reflecting mirror, so that the large-format 3D display is realized, the light path is effectively folded, and the size of the device is reduced. The naked-eye 3D display device is simple in structure, low in cost, high in adaptability and easy to popularize, and the naked-eye 3D display quality is improved.

The utility model relates to the technical field of recreation facilities, and discloses a phantom imaging cabinet which comprises a cabinet body, an adjustable adjusting assembly and a movable interaction assembly are arranged in the cabinet body, the adjusting assembly comprises a limiting groove formed in the top of the inner side of the cabinet body, and a slidable adjusting structure is arranged in the limiting groove. The interaction assembly comprises a clamping groove formed in the bottom of the inner side of the cabinet body, a movable interaction structure is arranged at the top of the clamping groove, the adjusting assembly further comprises a first connecting plate fixedly installed on the outer wall of one side of the cabinet body, the adjusting assembly further comprises two sets of guide rods fixedly installed in the limiting groove, and the adjusting structure comprises a hydraulic air cylinder. A groove is formed in the bottom of the first connecting plate, and a hydraulic air cylinder is fixedly installed in the groove, so that the purpose of adjusting the depth of the device is achieved, the phantom imaging structure moves forwards and backwards, the watching effect of projection is improved, the visual effect of the device is enhanced, and the use flexibility of the device is improved.

The invention relates to the technical field of man-machine interaction, in particular to man-machine interaction equipment based on artificial intelligence, which comprises a supporting seat, an interaction mechanism is mounted on the supporting seat, an adjusting mechanism is mounted on the supporting seat, a rotating mechanism is mounted on the adjusting mechanism, and a protection mechanism is mounted on the interaction mechanism. A collecting mechanism is mounted on the interaction mechanism, a clamping mechanism is connected to the protection mechanism, and a shielding mechanism is mounted at the top of the supporting seat; through the interaction mechanism, tourists can control pictures through combination of voices and gestures, through the adjusting mechanism and the rotating mechanism, the interaction mechanism can adjust the screen height and the picture quality according to the height of the tourists and rotate and display according to the picture proportion, and through the protection mechanism, the interaction mechanism can be shielded and cleaned. The collection box mechanism is controlled through the protection mechanism, storage and treatment of sundries are achieved, and disassembly and assembly of the collection mechanism and protection of the interaction mechanism are facilitated through the clamping mechanism and the folding mechanism.

The utility model discloses an LCD (liquid crystal display) screen with an adjustable visual angle, which belongs to the technical field of LCD screens and comprises a display screen body, a left mounting plate and a right mounting plate are fixedly mounted on two sides of the back of the display screen body respectively, and the outer side of the left mounting plate is rotatably matched with one end of a first connecting piece. The other end of the first connecting piece is rotationally matched with the fixing rod, and the outer side of the right mounting plate is rotationally matched with one end of a second connecting piece; the first adjusting structure is used for adjusting the left-right angle of the display screen main body; by arranging the first adjusting structure, the display screen is simple in structure, convenient and practical, a user can conveniently adjust the left and right visual angles of the display screen body, the comfort of the user during use is improved, meanwhile, the watching effect is improved, the user can conveniently adjust the pitching visual angle of the display screen body in cooperation with the second adjusting structure, and the user experience is improved. And the watching effect is further improved.

A sewing machine needle frame swing transmission mechanism belongs to the technical field of sewing mechanical equipment. Comprising a main shaft, a swing linkage servo motor, a front needle frame, a front needle rod, a rear needle frame, a rear needle rod, a needle frame connecting support and a needle rod linkage assembly. Wherein the end part of one end of the main shaft is provided with a needle bar crank, and the shaft body of the main shaft is sleeved with a front needle frame longitudinal driving cam; the front needle rod is fixedly arranged on the front needle frame, the rear needle rod is fixedly arranged on the rear needle frame, linkage between the front needle rod and the rear needle rod is achieved through the needle rod linkage assembly, the swing linkage servo motor is in transmission connection with the front needle frame and the rear needle frame, and the front needle frame longitudinal driving cam drives the front needle frame to move forwards. And the needle bar crank can drive the rear needle bar to be linked with the front needle bar. The device has the advantages that the device is stable and reliable to use, the front needle rod and the rear needle rod freely and alternately act, the manufacturing requirements of the left, middle and right lower needle points and stepless adjustment of the distance between the two needle rods are met, and richer pattern combinations are achieved.