HOME > Казуси > Музей на Джони Кеш — LED обновяване на стълби
Казус April 2026 · Tennessee, USA

Retrofitting P1.8 COB LED Stairs
at the Johnny Cash Museum

Интегрирането на цифрови дисплеи в ново строителство е лесно. Но вграждането на LED екрани с висока разделителна способност в напълно завършено, високопоставено културно наследство, без да се променя съществуващата структура, изисква инженерни усилия. Музеят на Джони Кеш помоли DOIT VISION да трансформира централно дървено стълбище с 12 стъпала в динамично дигитално платно. Използвайки инженерни решения със стандартни COB модули 320×160 мм, ултратънки алуминиеви профили и удароустойчиво епоксидно капсулиране, цялата система беше проектирана, произведена и доставена само за 15 дни.

Обхват на проекта
12 Стъпки
P1.8 COB · 320×160mm Modules
Pixel Pitch
P1.8
COB · 5H Hardness
История
15 дни
Production → Dispatch
Обща ширина
1,920mm
6 Modules × 320mm
Предоставените от Инженерен екип на DOIT VISION · · Прегледан от Крис Лианг, Съосновател · Август 2026 г.
CE · EMC · RoHS
15 инженери · Екип от 60 души в Шенжен
55+ държави · NovaStar · Colorlight
Контурна печатна платка + гъвкаваMooncell + РезолюцияПока-Йоукс монтаж
Преглед на проекта

С един поглед

Удовлетвореност
Музей на Джони Кеш
Heritage Site · Tennessee
Адрес
Тенеси, САЩ
On-site retrofit
Технология на дисплея
P1.8 COB LED
5H hardness · Epoxy sealed
Формат на модула
320×160mm Standard
Zero custom PCBs
структура
Ultra-Slim Aluminum
Front-serviceable magnetic
Ключово предизвикателство
No Structural Alteration
Fully finished heritage site
монтиране
Screw-Mount from Behind
Direct into wooden structure
Подкрепа
Remote Pixel Mapping
12 risers as one canvas
01 — Размерни ограничения

The Strict Dimensional Constraints

The client provided the exact, unchangeable dimensions of the existing staircase:

  • Общо стъпки12 risers
  • Височина на повдигача5 7/8" (approx. 150mm)
  • Riser Width11 steps at 77.5" (1968.5mm) + 1 bottom step at 61" (1549.4mm)

The dilemma was clear. Standard LED cabinets are bulky — usually 500×500mm or 1000×250mm — which would completely ruin the depth of the stairs or protrude past the rounded lips of the wooden treads. Custom-sized PCB boards for a relatively small 12-step project would skyrocket R&D costs and blow the museum's budget.

02 — Инженеринг на стойността

Standard Modules, Custom Results

Instead of reinventing the wheel with expensive custom circuit boards, our engineering team looked at the client's dimensions and immediately identified a mathematical synergy with our standard mass-produced modules.

Стратегически източник

Избрахме нашия стандарт 320×160 мм P1.8 COB LED модули. The 160mm module height was a near-perfect fit for the 150mm exposed riser height, maximizing visual area without a single custom PCB. By placing 6 modules horizontally (320mm × 6), we achieved an exact width of 1920mm — perfectly centered within the 1968.5mm stair width with a clean, symmetrical margin on both sides.

This value engineering approach — using standard modules creatively instead of designing bespoke PCBs — saved the museum tens of thousands in custom fabrication costs while keeping the 15-day delivery timeline achievable.

03 — Structural Engineering

Ultra-Slim Profile Design & Wiring

Ние разработихме персонализирани ултратънки алуминиеви профилни шкафове measuring exactly 1920×160mm — rigid backbones that added minimal depth to the existing stairs.

  • Direct Screw-MountingBecause the stairs were wood, the local crew simply drove screws from behind the stairs directly into the aluminum frames — no messy brackets, no structural alteration.
  • 100% Front-ServiceableCOB modules attach via heavy-duty magnets. If a module ever needs replacement, a technician pulls it off from the front with a suction tool — no disassembly required.
  • Hidden InfrastructureAll power supplies and receiving cards were routed behind the hollow wooden stair structure, keeping the face of the stairs completely clean.
04 — Доставка в рамките на 15 дни

From Shenzhen to Tennessee in 15 Days

By heavily utilizing standard 320×160mm COB modules rather than drafting custom PCBs, we slashed the production timeline drastically. The complete 12-step system was manufactured, tested, and dispatched in just 15 дни.

Upon arrival in Tennessee, the client's local crew handled the physical mounting smoothly thanks to the plug-and-play design. DOIT VISION's support team then stepped in via remote video link to map the 12 separate risers in software, digitally stacking them so that when the museum plays a video, content cascades seamlessly up and down the stairs as a single unified canvas.

Ключови инженерни прозрения

True engineering mastery isn't always about building the most complex custom circuit board. Often, it's about having the intelligence to use standard, highly reliable components in creative ways to solve strict physical constraints, respect budgets, and crush delivery deadlines.

05 — Material Science

Why COB is Mandatory for Stair Displays

Specifying the right LED packaging technology is the difference between an installation lasting 5 years or 5 days. For any display installed at foot level, SMD is a liability.

Уязвимостта на SMD

Standard SMD (Surface-Mounted Device) screens consist of millions of tiny LED bulbs soldered onto a board. A single accidental kick from a shoe shears off multiple diodes, resulting in permanent dead pixels — unacceptable in a premium museum environment.

Бронята COB

COB (Chip-on-Board) directly bonds the LED chips to the PCB, which is then completely coated and sealed in hardened epoxy resin. This creates a flat, smooth surface with 5H клас на твърдост — highly resistant to scratches, kicks, and direct impacts. Because the surface is sealed, it's inherently water-resistant, meaning museum staff can safely wipe down and clean the stairs without damaging internal electronics.

Чрез числата

Спецификации на проекта

12
Стъпки
11 wide + 1 narrow bottom step
1.8
Милиметрова стъпка на пиксела
COB · 5H hardness impact-resistant
320 × 160
Стандартен размер на модула
6 modules per riser = 1920mm width
150
Riser Height (mm)
Near-perfect fit with 160mm module
15
Дневна доставка
Production to dispatch
0
PCB по поръчка
100% standard module value engineering
Как доставихме

15-Day Retrofit Process

Етап 01

Dimensional Capture

Fixed dimensions verified: 150mm risers, 1968.5mm / 1549.4mm widths. Value engineering identified 320×160mm module synergy.

Етап 02

Aluminum Profile Fab

Custom 1920×160mm ultra-slim aluminum profiles fabricated with rear screw-mounting points and magnetic module interface.

Етап 03

Production & Dispatch

12 complete COB stair assemblies manufactured, tested, and dispatched in 15 days. All power and data pre-routed.

Етап 04

Remote Pixel Mapping

Local crew handled physical mounting. DOIT VISION engineers mapped 12 risers remotely — content cascades as one unified canvas.

Planning a retrofit installation?

Don't demolish your existing architecture just to fit standard LED cabinets. Our engineering team uses ultra-slim profiles and standard module synergy to save you thousands in custom fabrication costs.

Говорете с инженер →
Въпроси на купувача

Често задавани въпроси

Can LED displays be installed on existing staircases without demolition?
Yes. For the Johnny Cash Museum, DOIT VISION engineered ultra-slim aluminum profiles that screw-mounted directly to the existing wooden stairs from behind — no structural alteration, no demolition. All power and control hardware was routed through the hollow stair structure, keeping the installation completely hidden from view.
Why is COB mandatory for stair and floor LED applications?
COB (Chip-on-Board) encapsulates LEDs in hardened epoxy resin with 5H hardness. This armor layer withstands kicks, scuffs, and shoe impacts that would instantly shear off exposed SMD diodes. The sealed epoxy surface is also water-resistant, allowing safe cleaning without damaging internal electronics. For any display installed at foot level, COB is the only viable technology.
What's the advantage of using standard modules over custom PCBs?
Using standard 320×160mm modules instead of custom PCBs dramatically cuts costs and lead times. At the Johnny Cash Museum, the 150mm riser height was a near-perfect fit for the 160mm module height — eliminating an estimated $15,000–25,000 in custom PCB R&D. It also compressed the timeline from 6–8 weeks to just 15 days, since standard modules are in continuous mass production.
How do you map content across multiple stair risers as one canvas?
Each riser is treated as an independent display tile. DOIT VISION engineers map all risers in the LED controller software as a single logical canvas — digitally stacking them so video content cascades seamlessly from the top step to the bottom as if it were one large screen. This mapping can be done remotely via video link, as was done for the Tennessee installation.
How fast can DOIT VISION deliver a stair LED retrofit?
The Johnny Cash Museum's 12-step system was manufactured, tested, and dispatched in 15 days using standard 320×160mm COB modules. Typical lead times range from 2–4 weeks depending on step count and whether custom cabinet dimensions are required. We pre-assemble and pre-wire all assemblies before shipping to minimize on-site installation time.
Is front maintenance possible on stair LED installations?
Yes. DOIT VISION designed the aluminum profiles with magnetic front-serviceable COB modules. If any module needs replacement, a technician simply uses a suction tool to pull it off from the front — no need to access the rear of the stairs. This is critical for installations where the back of the stair structure is inaccessible after installation.

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Производител
DOIT VISION
автор
Крис Лианг, съосновател и водещ инженер
Опит на автора
19 години инженеринг на LED дисплеи
Тип съдържание
Казус
Основна тема
P1.8 COB LED Stairs Retrofit — Johnny Cash Museum, Tennessee
Ключови технологии
COB LED, P1.8mm, 320×160mm Standard Module, Ultra-Slim Aluminum Profile, Front-Serviceable Magnetic Mounting
Обхват на проекта
12 стъпки
Pixel Pitch
P1.8 COB
Местоположение на клиента
Тенеси, САЩ
История
15 days from production to dispatch
Дата на публикуване
април 2026
Дата на преглед
Август 2026
Сертификати
CE, FCC, RoHS, CB, ISO 9001
Обслужвани страни
55 +
Основан
2013 г., Шенжен, Китай
Вътрешни инженери
15
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Отговаряме в същия ден.
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Производител
DOIT VISION
Основан
2013 г., Шенжен, Китай
Щаб
Шенжен, Гуандун, Китай
Сертификати
CE, FCC, RoHS, CB, ISO 9001
Официален сайт
https://www.doitvision.com/