(Continued)
(2) Traffic hub (airport, station) scene
Core application requirements of horizontal inquiry machine display screen: it needs to adapt to indoor and outdoor temperature difference (such as air-conditioning environment of airport terminal and high/low temperature of outdoor platform), large flow of people and multilingual inquiry requirements, and it needs to support real-time inquiry of flights/trains, route navigation, refund and change guidance.
Advantages of horizontal inquiry machine display screen adaptation: the wide temperature range of -20℃~60℃ can cover the platform of the northern winter station (-15℃~5℃) and the outdoor passage of the southern summer airport (35℃~50℃), and it is not necessary to adjust the operation state of the equipment due to the ambient temperature.

The horizontal inquiry machine displays the 75-inch LG original 4K screen with full viewing angle technology, which supports multiple people to view the route map at the same time to avoid crowding. The infrared touch module can still respond accurately in the scene of wearing gloves (winter passengers) without taking off gloves.
Android system can quickly switch between Chinese, English, Japanese, Korean and other multilingual interfaces to meet the needs of international travelers.
(3) horizontal inquiry machine display screen medical service scene (hospital hall)
Core application requirements of horizontal inquiry machine display screen: it should deal with the complex environment of the hospital (such as corrosion of disinfection water and intensive collision of personnel), support registration payment, navigation of departments, and inquiry of doctor's visiting time, and ensure the quiet and noise-free operation of the equipment.
Advantages of horizontal inquiry machine display screen adaptation: the cold-rolled steel plate inquiry machine display screen body is resistant to corrosion by disinfectant water, and alcohol can be used to wipe the horizontal inquiry machine display screen body during daily cleaning without affecting the material performance.
The running noise of dust-proof axial fan is less than 35 decibels, which meets the requirements of quiet environment in hospital. The wide temperature characteristic adapts to the temperature change of air conditioning in hospital lobby, which is always on (20℃~26℃) and closed at night (10℃~15℃), to ensure the stability of equipment; Ten-touch supports multi-person inquiry at the same time (such as family inquiry department and patient registration), which improves service efficiency and reduces the queue pressure at the window.

D. Suggestions on the use, maintenance and optimization of public service scenes of horizontal inquiry machine display screen
Installation and placement of display screen of horizontal inquiry machine: give priority to the location with good ventilation and avoiding direct sunlight, such as the wall area of government affairs hall and the column of station waiting room, so as to reduce the extra load on equipment caused by high temperature exposure.
When the base of horizontal inquiry machine display screen is fixed, it needs to be connected with the ground with expansion screws, which can enhance the stability of the equipment in areas with high earthquake incidence.
Daily maintenance of horizontal inquiry machine display screen: wipe the cold-rolled steel plate body and tempered glass screen with dry cloth every week to remove dust.
Check the cooling fan for dust accumulation every month, and clean the fan filter screen through the compressed air tank to ensure the cooling efficiency.

The status of the wide temperature control module is detected by the remote system every quarter to avoid the failure of temperature adaptation caused by the failure of the heater and fan of the horizontal inquiry machine display screen.
Function optimization of horizontal inquiry machine display screen: Customize the interface according to different public service scenarios-increase the simplified mode of horizontal inquiry machine display screen for the elderly in the government hall (big font, few menus), strengthen the function of offline inquiry in transportation hub (you can still view cached flight/train information when there is no network), and add "voice-assisted inquiry" to the horizontal inquiry machine display screen in hospital scene (suitable for visually impaired users) to further enhance the universality of public services.