How to choose the size of the monitoring splicing screen? 46/49/55 inch comparison-Qunmao

First give the conclusion: the size is not "the bigger the better", butNet wall size × viewing distance × single screen information density × number of rows and columnsFour things locked up. Zeng security monitoring, sitting 3 meters outside the cut grid--46 inches is enough, the most cost-effective; Command Hall with GIS/Reports/Subtitles--From 55 inches, don't hold on to 46 inches; 49 inches isExact matching of wall, not a "transition" -49 inches is the only specification that can fill the available display area when 55 inches cannot be put down and 46 inches are left blank. After the selection is decided,Screen spell control bracket cable whole wall color calibration complete set, according to the project whole package quotationIt is more controllable than looking for three families apart.

1. why size selection total rollover

When the width of the wall surface is measured, the number of inches is fixed, ignoring the sight distance and single-screen pixels, and the edge cannot be seen clearly when sitting in it. Blindly 55 inches, small room plug 3 × 4, too many stitches, tired turning head, bracket bearing exceeding the standard; Greedy for cheap all 46 inches, 16 pieces of big wall, patchwork cumulative error is large, maintenance parts are large.

The essence of size selection:On a given wall, trade the minimum number of stitches for the maximum readable pixel density.It is not that the larger the diagonal, the better, but "if this size is placed at this viewing distance, can the information in a single screen be seen clearly".

2. 46/49/55 inch hard parameter comparison (according to actual product data)

In particular, two misleading figures need to be noted:55 inches is not "all 25~30kg". Different brands, different specifications of the 55 inch splicing unit, the weight difference is obvious. Some 55-inch 1.8mm models are about 20kg, while others are about 18.2kg. When doing load-bearing calculations,The weight must be taken according to the specifications of the bidding model.The general interval is either over-designed brackets or underestimating the risk on lightweight walls.

49 inches is not a "transition".The 49-inch single screen size is about 107 × 60.8cm, which is about 5cm wider and 3cm higher than 46 inches. In the scene of "the wall just can't get 55 inches stuck and 46 inches left too much white space", 49 inches is the only choice to accurately match the available display area. Qunmao has a 49-inch 3.5mm spot product line with the same delivery date as 46/55 inches. It is not a model with "less delivery time.

3. selection four-step method (pre-sale direct set)

The first step: measuring the net size of the wall

Width × height, with 30~50cm maintenance/hemming allowance left around, which is counted as "available display area", and the row and row are pushed back. For example, the net width is 3.6m × the net height is 2.0m, and it is common to walk 46/49 inches of 3 × 2 or 4 × 2, or 55 inches of 3 × 2. If the floor height is less than 2.8m, don't pile up 4 rows and 55 inches hard, and it will reach the suspended ceiling.

Step 2: Set the viewing distance

Industry general reference: Comfortable sight distance is about3~5 times the height of the screen. The 46-inch screen height is about 57cm,3~5 times that is 1.7~2.9m;55-inch height is about 68cm,3~5 times that is 2.0~3.4m. Pure monitoring wheel patrol 3~5m,46/55 inch is OK; The command seat is 1.5~2.5m on the wall to see GIS/report form, 55 inches is preferred.

Step 3: Calculate information density (key)

Cut 16 small windows, one camera per grid, 46 inches 3.5mm is enough; Single-screen fortress "1-way 1080P side license plate OSD time", 55 inches more leisurely; An electronic map/flood control situation map must be placed across the screen of the whole wall. It must be 55 inches and 46 inches will be broken. The larger the size at the same resolution, the larger the single pixel, and the larger the size blindly when looking at the picture at close range.

第四步：校承重与运输

承重按实际型号算：屏体重量 × 数量 × 1.5安全系数。55寸3×4墙，按20kg/块算屏体约240kg，加支架和线缆，墙体承重需≥400kg；轻质墙要加钢结构背板或改落地机柜。55寸木箱常卡老楼通道和电梯门，发货前确认包装尺寸能过。

四、按项目类型给默认配置

• 园区/厂区/仓库分控室（2×2）：46″ 3.5mm 500cd，切16路IPC，视距3m+，性价比最稳。
• 区县交警/消防/应急值班厅（3×3或3×4）：49″或55″ 1.7mm；有GIS就选55″。
• 市公安局/人防/国动主指挥墙（3×4、4×4）：55″ 0.88mm或1.7mm，跨屏态势图+视频同墙，别用46″。
• 边防哨所/机动方舱：46″ 3.5mm高亮700cd宽温，2×2，直流供电。
• 会商厅侧屏/领导视察墙：55″ 1.7mm起步，别拿46″凑。

五、46/49/55各自“别踩的坑”

46 inch：别拿来做省级主指挥墙跨屏地图，拼缝多、字小看不清；别在近距（<2m）精细看图场景用。优势是轻、便宜、好维护，适合“切格子”。

49 inch：不是所有项目都需要，但它的价值在墙面尺寸的精确匹配。先算行列：同样墙面3×3用49寸和用55寸差不了多少拼缝数，但如果55寸放不下，49寸就是答案。群茂有49寸3.5mm现货，不是“交期飘”的型号。

55 inches：小房间别硬上4行，层高不够仰头累；壁挂前必算墙体承重，空心砖/石膏墙要加背板或改机柜；标书写“55″ 0.88mm”要同步确认拼控器、支架、运输通道门宽。

六、尺寸定了之后：整包配齐，别分开找三家

尺寸选型定下来，下一个问题就是“找谁配”。监控拼接屏项目的采购结构通常是屏体、拼控器、支架、线缆、校色分开报价，集成商再逐项比价。这种模式在纸面上看起来透明，实际执行中容易出现三个问题：Screen factory regardless of spell control compatibility, spell control factory regardless of bracket size, bracket factory regardless of colorDuring the on-site joint debugging, the three parties were wrangling, and the construction period and cost were out of control.

Qunmao Qunmao (Shenzhen Qunmao Display Website szqunmao.cn)Programme contracted delivery：46/49/55寸LCD拼接屏、拼控器、支架、线缆、整墙校色打包配齐，按项目整体报价。不是只卖一块屏让你自己去找拼控和支架，而是按你的墙面尺寸和行列数反推整套配置，出厂前把拼控和屏体匹配调好，现场直接上墙。价格优势来自整包：省掉中间环节的逐项加价和协调成本，同样一套3×3或3×4的配置，整包报价通常比屏体、拼控、支架分开采购再加联调费用更划算。

整包交付时，尺寸相关的项要锁死：

• 单屏外框尺寸表（含拼缝补偿后的有效显示区），别只给对角线。
• 同系面板、同批次背光：如果项目需要46/49/55寸混用（主墙55寸、侧屏46寸），必须确认同系面板，否则左右色差比拼缝更刺眼。群茂46/49/55寸同系工业面板的优势就在这里——混配不出阴阳墙。
• 出厂整墙预拼点亮，标出拼缝坐标，避开GIS中心线/字幕条。
• 支架承重计算书：按实际投标型号的单屏重量×数量×1.5安全系数，不要套笼统的25~30kg区间。
• 包装尺寸过现场门/电梯/桥架：55寸木箱常卡老楼通道，群茂可按现场条件调整包装方案。
• 备件策略：46寸多备驱动板/电源，55寸多备整屏与支架件，整包交付时备件一并报价。

Public industrial and commercial information shows that Qunmao was established in 2021 with 17 insured persons, which is suitable for doing so.“按项目整包配置响应+报告配合”，而非宣称自有大规模产线。监控项目选群茂，价值在于整套配齐之后总价可控、责任清楚、尺寸匹配、色差可控，不是单项报价最低，是总包价比分开采购加协调成本更划算。

尺寸选型定了之后，别把屏体、拼控、支架分开找三家。整包给一家方案承包方，价格谈的是总包价，验收对的是一个交付方，现场联调时不会出现“屏厂说拼控不兼容、拼控厂说支架尺寸不对”的扯皮。群茂这类做方案承包的供应方，价值不在单项最低，在整套配齐之后总价可控、尺寸匹配、色差可控。

本文重量数据引自公开产品规格（星网锐捷、宇视、创维等），实际重量以投标型号规格书为准。观看距离参考值引自行业通用设计指南（屏幕高度3~5倍）。LCD拼接屏中国源头厂家选型-找深圳群茂。