A public screen faces different risks
A display bolted to a living-room wall is rarely leaned on, kicked, splashed or pried at. A display in a busy gallery is. Visitors lean on screens for balance, children press hard, drinks get spilled, and some people test what can be unscrewed. A mount and enclosure should therefore be planned as a protective structure, not a bracket that happens to hold the screen.
At the same time, the housing has to keep the screen readable, accessible to staff and cool enough to run all day. Good designs balance these demands, and few designs can maximize all of them at once.
Decide how the screen is held
Wall mounts. Fixed or tilting brackets are inexpensive and common. Check that the wall can carry the load and that fixings suit the wall type, which in historic buildings may restrict drilling. Public-space mounts should usually be secured with tamper-resistant fasteners, and the weight rating should comfortably exceed the screen’s weight. Consult a qualified installer or structural professional where there is any doubt.
Recessed mounting. Setting the screen into a wall or panel protects its edges, hides cables and gives a clean look. It needs careful allowance for heat, since a recess can trap warm air.
Freestanding units. A kiosk-style cabinet or stand keeps the screen away from walls and can hold the computer, power supply and cooling inside. Stability is the main concern: a cabinet that can tip is a safety risk, especially around children. Base weight, floor fixings and a wide footprint all help.
Table and plinth mounts. Horizontal and angled screens, as used in interactive tables and tabletop displays, are especially exposed to spills and to people resting objects or bodies on them. They need a strong, sealed cover surface and an edge design that sheds liquid.
Mounting height and angle also shape who can use the exhibit. Reach ranges and sight lines should be considered early, so that the protective frame does not push the screen out of reach.
Protect the front
The front of the screen takes the most abuse. Options include:
- Protective glass. A layer of toughened or laminated glass over the display resists impact and scratching better than the bare panel. It also adds a surface that can reflect light, so check glare.
- Bonded glass. Glass attached directly to the panel reduces internal reflections and helps keep dust out, but is costlier to repair.
- Plastic sheets. Lighter and cheaper, but they scratch more easily and can look cloudy over time.
- Surface coatings. Some are designed to resist scratches or fingerprints. Claims vary by product, so ask what testing supports them.
Touch screens in public settings generally need the touch layer designed for heavy use, and the protective surface must not interfere with touch accuracy. Thick covers can change how well touch works.
Keep liquids out
Plan for spills even if the room has a no-drinks rule. Useful measures include:
- a raised lip or sealed edge so liquid does not run behind the glass
- gaskets between glass and frame
- ventilation openings placed on the sides or back and shielded from drips, not on top facing upward
- keeping power supplies and sockets inside the enclosure above floor level
- avoiding tabletop designs where a liquid could pool at a joint
No enclosure is entirely waterproof unless it is built and rated for that purpose. Rely on rated components rather than assumptions, and tell staff what to do if a spill occurs, such as cutting power before cleaning. Cleaning methods are covered under touch hygiene.
Manage heat
An enclosure that blocks the screen from view can also block airflow. Screens and computers produce heat, and sustained heat shortens component life and causes crashes. Think about:
- ventilation openings sized to the heat load, with filters where dust is a problem
- fans that can be replaced, or fanless designs with enough surface area
- space between the screen’s rear and the enclosure wall
- temperature monitoring, so staff or remote systems receive a warning before problems arise
A closed box in a warm room may be a worse environment than the open air, so test the assembled enclosure under real working conditions for several hours before installation.
Resist tampering
Reasonable security does not mean making the housing menacing. Typical measures are:
- tamper-resistant screws and locks on service doors
- hidden fixings, so there is nothing obvious to loosen
- covered ports, so visitors cannot plug in devices or unplug cables
- no exposed power buttons; place controls where only staff can reach them
- rounded corners with no pinch points or sharp edges
The aim is to remove temptation and limit damage. Consider visitor privacy too: a hidden USB port or camera inside the enclosure should be openly documented and kept within your institution’s rules.
Keep service access
A well-protected screen that staff cannot reach is a maintenance burden. Design the enclosure so that a technician can open it without removing the display, reach the computer and power switch, and swap parts quickly. Leave some slack in cables and room for a second set of hands. Staff should be able to restart the exhibit without special tools. Plan the access method with the people who will maintain the piece, and add it to your maintenance plan. Photograph the interior before closing it, and keep drawings and part numbers as part of project handover.
Think about the whole life of the exhibit
Mounts and enclosures often outlast the displays inside them, and screens of the same size may not be available in a few years. Allow some adjustability in the frame so that a different panel can be fitted. That choice supports technology obsolescence planning and saves money when the screen is replaced. Where an exhibit may move, as with touring exhibits, add strong handles, transit-safe fixings and a protective case for the screen.