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| Area：International | Type：Metro | Frequency：0 |
| Address：Line 3 Line 7 transfer passage around the stairs | Format：led | Duration：、 |
| Location：Line 3 Line 7 transfer passage around the stairs | Min Qty：4 | |
| Size：86 | Min Period：week |
Flickering LED warning screens are added near the steps of curved platforms (e.g., Chungmuro Station Line 3) to remind "pay attention to platform clearances" and cooperate with voice prompts
The specific design varies from station to station, for example, curved platforms (such as some stations on Line 3) will add convex wide-angle LED screens at the corners of stairs to eliminate blind spots
Through the triple design of high-intensity hardware, scenario-based content, and emergency redundancy, the system takes into account commercial value and public service efficiency, and has become the core media carrier of modern subway transfer nodes
The LED screen adopts GOB packaging technology, and the surface of the module is covered with a high-strength glass layer, which effectively resists the high passenger flow of the staircase passage, and the slight scratches can be wiped and repaired without affecting the display effect, and the maintenance cost is reduced by more than 40%.
The non-magnetized panel fixing technology specially developed for the subway dust environment eliminates the adsorption of iron powder caused by rail friction, and significantly improves the life of the equipment and the stability of the display
As a bottleneck area that must be passed through for transfers, the staircase passage has a 100% reach rate of LED screens, an increase of more than 200% in advertising exposure compared with ordinary channels, and a 45% increase in brand retention and memory
Using GOB packaging technology, the scratch resistance is increased by 60% and the maintenance cost is reduced by 40%; Non-magnetized panel design effectively resists subway dust erosion, and the equipment life is extended by 30%
The LED system in this scene has the triple advantages of high traffic monopoly, low operation and maintenance rigidity, and policy adaptability, and the static payback period is about 3~5 years, which is calculated according to the advertising pricing of Seoul A-level sites. Priority will be given to the superimposed stations of Line 3/7, such as Zhongwu Road Station and Hong Kong Road Station, which can simultaneously obtain government smart transportation subsidies and form a dual return of short-term income and long-term asset appreciation
Core transfer stations (such as Qingluo International Metropolis Station) carry an average of 80,000 passengers per day to ensure basic exposure
