Outdoor touch display device

Abstract

The utility model discloses an outdoor touch -control display device relates to interactive equipment technical field, and outdoor touch -control display device includes: organism, sets up the installation cavity in the organism, and the front part of organism is provided with window, touch -control display screen is located in the installation cavity, and with window opposite arrangement, light filter mechanism is located in the installation cavity, the light filter mechanism has filter area and transparent area, the light filter mechanism is used to remove filter area with transparent area, to make touch -control display screen opposite filter area or transparent area. The utility model provides technical scheme has promoted the definition of outdoor display screen under various weather.

Description

Technical Field

[0001] This utility model relates to the field of interactive device technology, and in particular to an outdoor touch display device. Background Technology

[0002] In recent years, smart displays have been widely used in many fields due to their unique advantages, with advertising being particularly prominent. Large shopping malls often have permanent displays in their atriums showcasing brand promotional videos, product details, screenshots of positive customer reviews, and previews of new products. Consumers can touch the screen to zoom in and gain a deeper understanding of the products. Furthermore, the smart split-screen function can automatically adjust the advertising layout based on mall traffic flow, highlighting popular products and limited-time discounts during peak hours and showcasing brand stories and product information during off-peak hours, effectively improving advertising effectiveness and the consumer experience.

[0003] However, current smart displays are mostly used indoors, and lighting angles are often not considered during their placement and use. When outdoors or near windows or other brightly lit areas, strong external light can cause reflections on the smart display, even resulting in unclear content. This severely impacts the user experience and limits the application and promotion of smart displays in complex lighting environments such as outdoors. Utility Model Content

[0004] The main purpose of this invention is to propose an outdoor touch display device, which aims to improve the clarity of outdoor large screens.

[0005] To achieve the above objectives, this utility model proposes an outdoor touch display device, comprising: The body has an installation cavity inside and a window at the front. A touch screen is located inside the mounting cavity and is positioned directly opposite the window; A light filtering mechanism is disposed within the mounting cavity. The light filtering mechanism has a filtering area and a transparent area. The light filtering mechanism is used to move the filtering area and the transparent area so that the touch display screen faces the filtering area or the transparent area.

[0006] In one embodiment, the filtering mechanism includes: The bracket is disposed within the mounting cavity; A roller is rotatably mounted on the bracket, and at least two rollers are provided, with at least one roller provided on each side of the touch screen in the vertical direction; A diaphragm is connected end to end and wound around the roller shaft. The diaphragm forms an accommodating space. The touch screen is disposed in the accommodating space and is attached to the diaphragm near the window. The filtering area and the transparent area are formed on the diaphragm. A drive unit is drivenly connected to one of the rollers, the drive unit being used to drive the diaphragm to roll around the rollers so that the filtering area and the transparent area are alternately opposite the touch display screen.

[0007] In one embodiment, the filtering area is provided with a plurality of filters, which are arranged side by side in the conveying direction of the membrane, and each filter has a different filtering effect.

[0008] In one embodiment, each of the filters has a different surface roughness; and / or, each of the filters has a different color.

[0009] In one embodiment, the driving component includes two stepper motors, each of which is connected to both ends of the same roller shaft.

[0010] In one embodiment, the outdoor touch display device further includes a cleaning mechanism disposed within the mounting cavity and in contact with the side of the diaphragm opposite to the touch display screen, for cleaning the surface of the diaphragm.

[0011] In one embodiment, the cleaning mechanism includes: An adsorption roller is rotatably mounted on the support. The adsorption roller has an adsorption cavity inside and adsorption holes densely distributed on its outer peripheral wall. The adsorption roller communicates with the adsorption cavity and rolls in cooperation with the membrane. A negative pressure generating device is mounted on the support and is connected to the adsorption chamber to generate negative pressure in the adsorption chamber.

[0012] In one embodiment, two adsorption rollers are provided, one of which is located above the window and the other is located below the window.

[0013] In one embodiment, the outdoor touch display device further includes a flexible seal, which is disposed within the mounting cavity and around the periphery of the window, extending around the window and flexibly abutting against the diaphragm.

[0014] In one embodiment, the top of the device is provided with a placement cylinder; and / or, the device is also provided with a speaker, two speakers are provided, the two speakers are respectively located above and below the window; and / or, the bottom of the window is provided with an opening, and the outdoor touch display device further includes a second display screen, the second display screen being located in the opening.

[0015] In the technical solution of this utility model, the outdoor touch display device is also equipped with a light-shielding mechanism. The light-shielding mechanism can adjust the position of the filter area and the transparent area so that either one of them is directly facing the touch display screen. In this way, when the outdoor light is not strong, the light-shielding mechanism can adjust the transparent area to face the touch display screen, thus maintaining the clarity of the touch display screen and improving the display effect. When the outdoor light is strong, the light-shielding mechanism can adjust the filter area to face the touch display screen, filtering the light through the filter area, reducing reflections, and improving the display effect of the touch display screen under strong light. This allows the outdoor touch display device to meet the needs of use in various weather conditions and improves the user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the outdoor touch display device provided by this utility model; Figure 2 Another structural schematic diagram of the outdoor touch display device provided by this utility model; Figure 3 Another structural schematic diagram of the outdoor touch display device provided by this utility model; Figure 4 A cross-sectional schematic diagram of the outdoor touch display device provided by this utility model; Figure 5 This is a schematic diagram of the structure of the diaphragm in the outdoor touch display device provided by this utility model.

[0018] Explanation of icon numbers: 100. Body; 200. Touch screen display; 300. Filtering mechanism; 310. Support; 320. Roller; 330. Membrane; 331. Filter; 340. Drive unit; 400. Cleaning mechanism; 410. Adsorption roller; 420. Negative pressure generating device; 500. Flexible sealing element; 600. Placement cylinder; 700. Speaker; 800. Second display screen.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] To improve the clarity of outdoor displays in various weather conditions, this technical solution proposes an outdoor touch display device, comprising: The body 100 has an installation cavity inside and a window at the front. The touch screen 200 is located inside the mounting cavity and is positioned directly opposite the window; A light filtering mechanism 300 is disposed in the mounting cavity. The light filtering mechanism 300 has a light filtering area and a transparent area. The light filtering mechanism 300 is used to move the light filtering area and the transparent area so that the touch display screen 200 faces the light filtering area or the transparent area.

[0024] In the technical solution of this utility model, the outdoor touch display device is also provided with a light-shielding mechanism. The light-shielding mechanism can adjust the position of the filter area and the transparent area so that either one of them is directly opposite the touch display screen 200. In this way, when the outdoor light is not strong, the light-shielding mechanism can adjust the transparent area to be directly opposite the touch display screen 200, thus maintaining the clarity of the touch display screen 200 and improving the display effect. When the outdoor light is strong, the light-shielding mechanism can adjust the filter area to be directly opposite the touch display screen 200, filtering the light through the filter area, reducing reflections, and improving the display effect of the touch display screen 200 under strong light. This allows the outdoor touch display device to meet the needs of use in various weather conditions and improves the user experience.

[0025] Specifically, such as Figures 1 to 5In one embodiment of this utility model, the outdoor touch display device mainly consists of a body 100, a touch display screen 200, and a light filtering mechanism 300. The body 100 provides support and protection for the entire device and has an internal mounting cavity for installing various components. The body 100 is made of high-strength aluminum alloy, possessing good weather resistance and impact resistance. A window is provided at the front of the body 100, and the touch display screen 200 is installed in the mounting cavity, facing the window. Users can view and operate the touch display screen 200 through the window. The touch display screen 200 is a 55-inch capacitive touchscreen with a resolution of 1920×1080, featuring high brightness (800cd / ㎡) and high... The display effect has a contrast ratio of 1200:1; the light filter mechanism 300 is also located within the mounting cavity, and it has a movable light filter area and a transparent area; the light shielding mechanism may include two take-up rollers rotatably connected within the mounting cavity, with the two take-up rollers respectively located on both sides of the touch screen 200. Each take-up roller is driven to rotate by a servo motor, and the two take-up rollers are connected by a take-up belt. A transparent film 330 and a light-transmitting frosted film 330 may be set on the take-up belt. The transparent film 330 is made of optical-grade PET film material with a thickness of 0.2 mm. The transparent area is formed by a 0.3mm thick frosted PC material with a light transmittance of up to 92%. The frosted film 330 is made of specially treated frosted PC material with a thickness of 0.3mm and a haze of up to 85%. Two take-up rollers, in conjunction with a take-up belt, can drive either the transparent film 330 or the frosted film 330 to face the window. When the transparent film 330 faces the window, external light is projected more directly onto the touch screen 200, improving the display clarity of the touch screen 200 in low-light conditions such as cloudy days. When the frosted film 330 faces the window... External light projected onto the frosted film 330 undergoes diffuse reflection, reducing the brightness of the light ultimately projected onto the touchscreen display 200. This reduces glare in bright sunlight and other environments, making it easier for users to clearly see the touchscreen display 200. The switching of the light-filtering mechanism 300 can be manually triggered or by installing a light intensity sensor on the main unit 100. This sensor is connected to the main unit of the outdoor touchscreen display device, which uses a low-power, high-performance ARM-based processor with a 1.5GHz clock speed, 2GB of DDR4 memory, and 32GB of eMMC storage. The main unit monitors the light intensity to automatically switch between the transparent and filtered areas facing the touchscreen display 200. This light-filtering mechanism 300 ensures the outdoor touchscreen display device can operate in various weather conditions, improving display clarity and enhancing the user experience.

[0026] like Figure 3 and Figure 4 In one embodiment of this utility model, the filtering mechanism 300 includes: Bracket 310 is located inside the mounting cavity; Roller 320 is rotatably mounted on bracket 310. At least two rollers 320 are provided, with at least one roller 320 provided on each side of the touch display screen 200 in the vertical direction. A diaphragm 330 is connected end to end and wound around a roller 320. The diaphragm 330 forms an accommodating space. The touch screen 200 is disposed in the accommodating space and is attached to the diaphragm 330 near the window. The filter area and the transparent area are formed on the diaphragm 330. The drive unit 340 is connected to one of the rollers 320. The drive unit 340 is used to drive the diaphragm 330 to roll around the roller 320 so that the filter area and the transparent area are alternately opposite to the touch screen 200.

[0027] In another embodiment of this utility model, the specific structure of the filter mechanism 300 is designed. In this solution, the filter mechanism 300 is mainly composed of a support 310, a roller 320, a diaphragm 330 and a drive component 340. The bracket 310, serving as the main support for the entire filter mechanism 300, is made of 304 stainless steel with a sandblasted surface to enhance corrosion resistance, providing a mounting base for other components. At least two rollers 320 are rotatably mounted on the bracket 310, located on each side of the touchscreen display 200 in the vertical direction. The rollers 320 are made of 42CrMo alloy steel, with both ends mounted on the bracket 310 via deep groove ball bearings. The diaphragms 330 are connected end-to-end, forming a conveyor belt-like pattern. The diaphragms 330 are wound around the rollers 320, creating a relatively enclosed accommodating space. The placement of at least one roller 320 on each side of the touchscreen display 200 in the vertical direction provides stable and reliable support for the winding of the diaphragms 330, ensuring their relative stability during rolling. The touchscreen display 200 is placed within the accommodating space formed by the diaphragms 330 and is tightly fitted to the diaphragm 330 closest to the window. This not only makes the entire filter mechanism 300 more compact, but also prevents light from the touch screen 200 from refracting between the film 330 and the touch screen 200, which helps improve display clarity. Furthermore, both the filter area and the transparent area are formed on the film 330. For example, the film 330 can be composed of a transparent film and a light-transmitting frosted film, with the transparent film forming the transparent area and the frosted film forming the filter area. Of course, the material of the filter area can be a special optical material or coating, depending on actual needs, to achieve the functions of filtering, scattering, or absorbing light, thereby reducing reflection and improving display clarity; while the transparent area ensures... In low-light environments, light can pass through as little as possible without loss, ensuring that the content displayed on the touch screen 200 is clearly and accurately conveyed to the user. The driving component 340 can be a servo motor or similar device, which is connected to one of the rollers 320 via gears or pulleys. The driving component 340 drives the connected roller 320 to rotate. Since the diaphragm 330 is wound around the roller 320, the rotation of the roller 320 drives the diaphragm 330 to roll around the roller 320. As the diaphragm 330 continues to roll, the filter area and the transparent area move alternately in front of the touch screen 200, ultimately switching their positions relative to the touch screen 200. In this technical solution, the design of the filter mechanism 300 ensures stable switching between the filter area and the transparent area and also facilitates miniaturization.

[0028] like Figure 5As shown, in one embodiment of this invention, a plurality of filters 331 are provided in the filtering area. These filters 331 are arranged side-by-side in the conveying direction of the film 330, and each filter 331 has a different filtering effect. Each filter 331 differs in color, transmittance, and reflectance. For example, some filters 331 may be biased towards absorbing specific wavelengths of light; ultraviolet absorbers, such as ultraviolet or infrared absorbers, can be added to the material to reduce the potential impact of these invisible lights on the display effect. Other filters 331 may be coated with multiple layers of anti-reflective or anti-reflective films to adjust the transmittance of visible light, thereby enhancing the contrast, color saturation, or clarity of the displayed content. Through this diverse filter 331 design, users can flexibly select the most suitable filter 331 according to actual lighting conditions and their own visual preferences, thereby obtaining the best visual experience.

[0029] In another embodiment of this invention, each filter 331 has a different surface roughness; and / or, each filter 331 has a different color. Specifically, different surface roughnesses are formed on the filter 331 by etching. Filters 331 with different surface roughnesses can produce different degrees of scattering and reflection of light. Filters 331 with a rougher surface can effectively break specular reflection of light, converting strong direct light into soft diffuse reflection light, thereby significantly reducing screen reflection in strong light environments and making the displayed content clearer. Filters 331 with a relatively smooth surface can allow more light to pass through directly in low light environments, maintaining the brightness and color vibrancy of the screen. Using filters 331 with different roughnesses can further refine the applicability to various weather conditions, ensuring that users can obtain a good visual experience under different lighting conditions. In addition, each filter 331 can be processed with optical interference coating technology to form different colors. Different colored filters 331 can absorb or transmit light of specific wavelengths according to actual needs, which can meet the personalized needs of different display content.

[0030] like Figure 3In another embodiment of this utility model, the driving component 340 includes two stepper motors, each connected to one end of the same roller shaft 320. The stepper motors are model TSM57BYG, with a rated voltage of 24V, a rated current of 1.5A, and a step angle of 1.8°. Thus, the two stepper motors jointly drive the same roller shaft 320, and can mutually limit each other, achieving precise adjustment of the rotation angle of the roller shaft 320. This ensures accurate alignment between the filter area and the transparent area with the touch display screen 200, preventing deviations during switching and guaranteeing the consistency and stability of the display effect. In terms of drive control, the two stepper motors are synchronously controlled by a DM542 stepper motor driver. The driver supports a maximum pulse frequency of 200kHz, an output current of up to 2.2A, and achieves a rotation angle control accuracy of ±0.01°.

[0031] like Figure 2 In one embodiment of this utility model, the outdoor touch display device further includes a cleaning mechanism 400. The cleaning mechanism 400 is disposed in the mounting cavity and contacts the side of the diaphragm 330 opposite to the touch display screen 200 to clean the surface of the diaphragm 330. Specifically, to ensure the stable operation and display effect of the outdoor touch display device, a cleaning mechanism 400 is also provided inside the body 100. The cleaning mechanism 400 can be a brush or similar component. The brush is made of nano-composite fiber with a hardness of 0.5-0.8 Shore, a brush length of 12mm, and a brush density of 1000 bristles / cm². The brush of the cleaning mechanism 400 is fixed to the bracket 310 via an elastic connector. The elastic connector uses a stainless steel spring with a spring coefficient of 5N / mm, ensuring that the contact pressure between the brush and the diaphragm 330 is stable at 0.8 to 1.2N / cm². The cleaning mechanism 400 can contact the side of the diaphragm 330 away from the touch screen 200. When the diaphragm 330 rolls, the cleaning mechanism 400 can simultaneously wipe the surface of the diaphragm 330, removing contaminants that adhere to the diaphragm 330 during use, ensuring that the diaphragm 330 is always in a relatively clean state. This ensures that the display effect of the touch screen 200 is not affected, further improving the reliability and practicality of the device.

[0032] like Figure 3 In one embodiment of this utility model, the cleaning mechanism 400 includes: The adsorption roller 410 is rotatably mounted on the support 310. The adsorption roller 410 has an adsorption cavity inside and adsorption holes densely distributed on its outer peripheral wall. The adsorption roller 410 is connected to the adsorption cavity and rolls with the membrane 330. A negative pressure generating device 420 is mounted on a support 310. The negative pressure generating device 420 is connected to the adsorption chamber and is used to generate negative pressure in the adsorption chamber.

[0033] The adsorption roller 410 is rotatably mounted on the bracket 310 and can be arranged parallel to the roller shaft 320. It has an adsorption chamber inside and multiple adsorption holes are evenly distributed on its outer peripheral wall, connecting to the adsorption chamber. The adsorption roller 410 is mounted on the bracket 310 via a deep groove ball bearing. The negative pressure generating device 420 is fixedly mounted on the bracket 310. The negative pressure generating device 420 uses a miniature DC centrifugal fan with a rated voltage of 12V, a rated power of 24W, and a maximum air volume of 18m³ / h. The connecting pipe between the fan and the adsorption chamber uses PVC flexible tubing with an inner diameter of 25mm. To prevent the pipe from rotating, a rotary bearing can be used between the pipe and the adsorption roller 410. When the negative pressure generating device 420 is activated, a negative pressure is generated in the adsorption chamber, which draws dust from the surface of the diaphragm 330 into the adsorption chamber through the adsorption holes. The adsorption roller 410 will continue to rotate under the drive of the diaphragm 330, thus reducing wear on the diaphragm 330. The dust drawn into the adsorption chamber can eventually be discharged into the external environment through the negative pressure generating device 420. This method of using negative pressure adsorption not only ensures the cleaning effect, but also eliminates the need for frequent cleaning and maintenance of the cleaning mechanism 400, thereby improving the reliability of the outdoor touch display device.

[0034] like Figure 3 As shown, in another embodiment of this utility model, two adsorption rollers 410 are provided, one adsorption roller 410 is located above the window, and the other adsorption roller 410 is located below the window. Both adsorption rollers 410 are connected to the negative pressure generating device 420. Thus, whether the diaphragm 330 rolls upwards or downwards, it will first pass through the adsorption rollers 410 before reaching the window position, ensuring that the diaphragm 330 at the window is always clean, which is beneficial to improving the display effect. In addition, the two adsorption rollers 410 simultaneously adsorb dust, which is equivalent to performing a secondary cleaning of the diaphragm 330, further improving the cleaning effect.

[0035] like Figure 3 and Figure 4As shown, in one embodiment of this utility model, the outdoor touch display device further includes a flexible sealing element 500. The flexible sealing element 500 is disposed within the mounting cavity and around the periphery of the window, extending around the window and flexibly abutting against the diaphragm 330. The flexible sealing element 500 is made of high-density open-cell foam material (such as polyethylene foam) with a density of 40 kg / m³ and a resilience of 85%. It has a square frame structure with a D-shaped cross-section. Extending around the window, the flexible sealing element 500 is fixed to the periphery of the window using 3M double-sided adhesive and cooperates with the periphery of the touch display screen 200 to clamp the diaphragm 330. This prevents external dust from entering the mounting cavity, ensuring the reliability of all components within the cavity. Furthermore, the flexible sealing element 500 uses a self-lubricating material, ensuring a good seal without adversely affecting the normal movement of the diaphragm 330, thus extending the service life of the diaphragm 330 and the entire device.

[0036] like Figure 1 In one embodiment of this utility model, the top of the body 100 is provided with a placement tube 600, made of 304 stainless steel with a brushed surface. The tube cover is made of transparent acrylic material. In outdoor environments, this placement tube 600 can be used to store promotional materials such as leaflets, product catalogs, and event manuals, making it convenient for passersby to take them and increasing the channels for information dissemination. In another embodiment, the body 100 is also provided with two speakers 700, which are respectively positioned above and below the window. The two speakers 700 adopt a waterproof and dustproof design (protection rating IP65), with a rated power of 30W and a frequency response range of 120Hz-20kHz. With a sensitivity of 90dB and an impedance of 8Ω, the display content becomes more vivid and attracts the attention of passersby. In another embodiment, an opening is provided below the window, and the outdoor touch display device also includes a second display screen 800 located within the opening. The second display screen 800 can be a long strip-shaped IPS LCD screen and can be used to display auxiliary information such as advertisements, public service announcements, weather information, and time displays. This information can be related to the content of the main display screen or it can be independent content, thus improving the richness of information display and providing advertisers with more display opportunities, thereby increasing commercial value.

[0037] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An outdoor touch display device, characterized in that, include: The body has an installation cavity inside and a window at the front. A touch screen is located inside the mounting cavity and is positioned directly opposite the window; A light filtering mechanism is disposed in the mounting cavity. The light filtering mechanism has a light filtering area and a transparent area. The light filtering mechanism is used to move the light filtering area and the transparent area so that the touch display screen faces the light filtering area or the transparent area. The filtering mechanism includes: The bracket is disposed within the mounting cavity; A roller is rotatably mounted on the bracket, and at least two rollers are provided, with at least one roller provided on each side of the touch screen in the vertical direction; A diaphragm is connected end to end and wound around the roller shaft. The diaphragm forms an accommodating space. The touch screen is disposed in the accommodating space and is attached to the diaphragm near the window. The filtering area and the transparent area are formed on the diaphragm. A drive unit is drivenly connected to one of the rollers, the drive unit being used to drive the diaphragm to roll around the rollers so that the filtering area and the transparent area are alternately opposite the touch display screen.

2. The outdoor touch display device as described in claim 1, characterized in that, The filtering area is provided with multiple filters, which are arranged side by side in the conveying direction of the membrane, and each filter has a different filtering effect.

3. The outdoor touch display device as described in claim 2, characterized in that, Each of the aforementioned filters has a different surface roughness; and / or, each of the aforementioned filters has a different color.

4. The outdoor touch display device as described in claim 1, characterized in that, The driving component includes two stepper motors, each of which is connected to one end of the same roller shaft.

5. The outdoor touch display device as described in claim 1, characterized in that, The outdoor touch display device also includes a cleaning mechanism, which is located inside the mounting cavity and contacts the side of the diaphragm opposite to the touch display screen to clean the surface of the diaphragm.

6. The outdoor touch display device as described in claim 5, characterized in that, The cleaning facility includes: An adsorption roller is rotatably mounted on the support. The adsorption roller has an adsorption cavity inside and adsorption holes densely distributed on its outer peripheral wall. The adsorption roller communicates with the adsorption cavity and rolls in cooperation with the membrane. A negative pressure generating device is mounted on the support and is connected to the adsorption chamber to generate negative pressure in the adsorption chamber.

7. The outdoor touch display device as described in claim 6, characterized in that, Two adsorption rollers are provided, one of which is located above the window and the other is located below the window.

8. The outdoor touch display device as described in claim 1, characterized in that, The outdoor touch display device also includes a flexible seal, which is disposed in the mounting cavity and around the periphery of the window. The flexible seal extends around the window and flexibly abuts against the diaphragm.

9. The outdoor touch display device as described in claim 1, characterized in that, The top of the machine body is provided with a placement tube; and / or, the machine body is also provided with a speaker, and there are two speakers, which are respectively located above and below the window.

10. The outdoor touch display device as described in claim 1, characterized in that, The window also has an opening below it, and the outdoor touch display device also includes a second display screen, which is located inside the opening.

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