A full analysis of the sizes of hanging advertising machines: application features and advantages from 19 inches to 100 inches
Small and medium sizes (19-32 inches): flexible and efficient precision communication tools
19-24 inch advertising machines are ideal for compact spaces. The thickness of 19-inch (1280×1024) models is usually less than 10cm, the weight is between 4-6kg, and the power consumption is only 25-35W, which is particularly suitable for small areas such as elevator cars and convenience store cashier counters. Its advantage is that it is extremely flexible to install, and can be installed in a variety of ways such as ceiling, arm or wall, and the cost is controlled in the range of 2000-4000 yuan. 22 inches (1920×1080) are upgraded to full HD resolution while maintaining the volume advantage, with a pixel density of 102PPI, and the text clarity is improved by 40% when viewed at a distance of 1 meter. The 24-inch (1920×1200) 16:10 ratio is more suitable for document and web content display, and has become the first choice for bank counters and drugstore windows. Its typical brightness of 350-500nit is enough to cope with most indoor environments.
The 27-32-inch advertising machine strikes a balance between performance and size. The 27-inch (2560×1440) QHD model has a pixel density of 109PPI, and with a 178° wide-viewing angle IPS panel, it is the perfect partner for brand store product display stands. Its color accuracy ΔE

55-inch advertising machine represents the benchmark for professional-grade commercial display. Compared with consumer-grade TVs, the commercial 55-inch (3840×2160) has three major enhancements in durability: using industrial-grade LCD panels, supporting 7×24 hours of continuous operation; the thickness of the whole machine is controlled within 45mm, and the noise of the cooling system is less than 28dB; the interface configuration includes 3×HDMI 2.0, 1×DP1.2 and USB3.0×2. Its technical innovations include: intelligent brightness adjustment (automatically adjust 50-500nit according to ambient light); built-in AI camera to achieve customer flow statistics; optional infrared touch frame (touch accuracy ±1.5mm). In scenes such as hotel lobbies and corporate exhibition halls, the average service life of 55-inch advertising machines is 8-10 years, the annual failure rate is less than 2%, and the operating benefits are significant.
Large size (65-86 inches): creator of immersive experience
65-75-inch advertising machines open up a new dimension of visual experience. The 65-inch (3840×2160) screen area is about 143×81cm, and the horizontal viewing angle covers 60° when viewed at a distance of 3-5 meters, which can naturally attract the attention of pedestrians. Its technical highlights include: 120Hz refresh rate to ensure dynamic images without ghosting; professional-level color accuracy of ΔE<1.5; support for HDR10+ and HLG dual standards. The 75-inch model further expands the display area by 30%, adopts an all-aluminum alloy body (thickness ≤ 60mm), and is equipped with an intelligent temperature control system to ensure stable operation in an environment of -20℃ to 50℃. Market data shows that in the application of automobile 4S stores, the 75-inch advertising machine allows customers to stay 40% longer than the 55-inch model, and the inquiry rate increases by 35%.

The 86-inch advertising machine is the top configuration of the single-screen solution. The display accuracy of the 86-inch (7680×4320) 8K model reaches 102PPI, and the pixels cannot be distinguished when viewed at a distance of 2 meters, perfectly presenting the image of a real-size model. Its breakthrough technologies include: Mini LED backlight system (1152 independent light control zones); peak brightness of 3000nit; 97% Adobe RGB color gamut coverage; built-in 5G module to achieve real-time transmission of 8K content. Deployment cases in high-end shopping malls show that the 86-inch transparent OLED advertising machine (transparency 40%) has increased store traffic by 60%, becoming a phenomenal marketing tool. The installation of this size product requires professional steel structure support. The weight of the whole machine usually exceeds 80kg, and it is recommended to bear ≥150kg per square meter.
Giant size (100 inches and above): Landmark digital media platform
The 100-inch advertising machine redefines the visual scale of space. The 100-inch (7680×4320) screen is 1.25 meters high and 2.2 meters wide, and it still maintains a strong visual impact at a distance of 15 meters. Its engineering design breakthroughs include: modular cabinet design (single cabinet weight ≤25kg); front maintenance structure (maintenance channel ≥60cm); intelligent pixel correction technology (brightness consistency ≥95%). The application practice in the airport terminal shows that the brand recall of the 100-inch advertising machine is 4 times that of the 55-inch model, making it a veritable digital landmark.

The solution above 100 inches mainly adopts LED splicing technology. The P1.2 small-pitch LED screen (pixel pitch 1.2mm) can present a delicate picture quality comparable to LCD when viewed from a distance of 3 meters. Its core advantages are: unlimited splicing scalability; 5000nit ultra-high brightness (visible in sunlight); 100,000 hours of service life. The operating data of a 163-inch LED advertising wall at an international airport shows that its media value per unit area is 8 times that of traditional light boxes, and the return on investment cycle is shortened to 14 months. The latest development trends include: Micro LED technology achieves 0.7mm pixel pitch; carbon fiber material reduces the weight of the box by 35%; AI content scheduling system automatically optimizes the playback strategy according to passenger flow.
Techno-economics of size selection
Scientific selection requires the establishment of a multi-dimensional evaluation system. From the spatial dimension, the International Association for Display Metrology recommends: minimum viewing distance (meters) = screen height (meters) × 1.5 (text content) or × 3 (video content). For example, the text reading distance of a 55-inch (0.68-meter high) screen should be ≥ 1 meter. From the cost-benefit analysis, the 55-inch model has the best display area cost ratio (yuan/cm²), which is 40% lower than the 32-inch model and 65% lower than the 86-inch model. In terms of energy consumption, the 65-inch LED model (about 300W) has the best energy efficiency ratio, and the power consumption per unit display area is 15% lower than the 55-inch model and 30% lower than the 86-inch model.
The scenario selection guide provides practical wisdom. Retail stores are recommended to adopt a "pyramid" layout: 19-24 inches in the cashier area to display promotional information, 32-43 inches in the shelf area for product recommendations, and 55-75 inches in the main channel to shape the brand image. The catering industry is suitable for 27-43-inch vertical screen menus (ratio 9:16), combined with 75-inch panoramic kitchen live broadcasts. Transportation hubs should adopt a multi-level combination of 43-100 inches, with small sizes used for real-time information and large sizes for image promotion. New trends worth paying attention to include: rotatable screens (automatic switching between horizontal and vertical) to improve content adaptability; double-sided display models save space resources; transparent display technology creates a virtual-real fusion effect.