Specifications And Effects Of LED Displays In The Subway

Specifications and effects of LED displays in the subway

 

 

 

 

I. Specifications of commonly used LED display in the subway

 

 

(1) P4-P8 indoor full-color display

 

 

pixel pitch: P4, P5, P6, P8 represent 4mm, 5mm, 6mm, 8mm respectively. In indoor environments such as subway cars and platforms, P4 - P8 are more common. P5, for example, has a pixel density of 40,000 dots per square meter, which ensures that images and text are crisp and crisp when viewed at closer range, without noticeable graininess.

 

 

Brightness: The brightness is generally 1500 - 3000cd/㎡.

The light in the subway is relatively stable, but there are various lights, which can not only ensure that the display screen is clearly visible in the indoor light, but also will not be dazzling due to excessive brightness, affecting the visual experience of passengers. Size: In the cabin, the display size is usually smaller, such as 32 inches, 42 inches, etc., to fit the limited space of the carriage and make it easy for passengers to watch while seated or standing.

Displays on platforms are larger, typically 55 inches, 65 inches or even larger, to display important information and ensure that passengers in different positions can see it clearly.

 

 

(2) P10 - P20 outdoor full-color display (some subway entrances and exits and outside the station guidance screen)

 

 

Pixel pitch: P10 - P20 is suitable for subway entrances and exits and outside the station guidance area. For example, P16 has a pixel density of 3906.25 dots per square meter. Due to the long viewing distance, the larger pixel pitch can meet the needs of long-distance viewing and reduce costs. Brightness: Brightness is usually between 5000 - 8000cd/㎡. These areas are located outdoors and face different lighting conditions, and the high brightness ensures that the display is still legible in direct sunlight.

 

 

Size: The size is determined according to the actual installation location and demand, and the general area is large, the common ones are 2m×3m, 3m×5m, etc., in order to attract the attention of long-distance pedestrians and play an effective guiding role.

 

 

II. Effects on People

 

(1) Clear Visual Effects
 

 

Clear Images and Text: Whether in the carriage or on the platform display, appropriate pixel pitch and high resolution ensure that images and text are displayed clearly. Inside the carriage, passengers can clearly see the train route map, station information, transfer tips, etc., avoiding missing their stop or transfer. On the platform, the large display screen clearly shows the train arrival time, terminal station information, etc., allowing passengers to prepare for boarding in advance.
 

 

Vibrant Colors: LED displays have good color reproduction capabilities, high color saturation, and can present rich and vivid colors. When playing advertisements and public service announcements, bright colors can attract passengers' attention and enhance the effectiveness of information delivery.
 

 

(2) Efficient Information Transmission
 

 

Real-time Updates: Subway operation information changes in real time, and LED displays can update content in real time through the control system. For example, information such as train delays and temporary suspensions can be communicated to passengers promptly, making it easier for them to adjust their travel plans.
 

 

Multi-content Display: It can simultaneously display various information, such as train operation details, weather forecasts, news updates, etc. Passengers can access a wealth of information while waiting for the train or during their journey, meeting different needs.
 

 

(3) Enhancing the Travel Experience
 

 

Guidance: In complex subway transfer stations, passengers can clearly see guidance information through display screens set up in corridors, stairways, etc., quickly finding their transfer lines and exits, reducing the hassle of getting lost and improving travel efficiency.
 

 

Alleviating Anxiety: While waiting for the train, passengers can check the train arrival time on the display screen, which can effectively alleviate anxiety during the wait, making the journey more relaxed.