Modular Display Light Box with Plug-and-Play Power Connectors

The problem

Installing traditional backlit display cases is slow and prone to electrical faults. Workers must manually connect wires between the transformer, the LED strips, and the frame rails. This requires stripping insulation, crimping terminals, or soldering, often while holding heavy metal parts in place. If the unit needs to be moved or resized, the wiring must be disconnected and re-routed. Furthermore, standard frames are fixed at 90-degree angles, limiting design flexibility. Graphics usually require tension systems or adhesive mounting, which can bubble or peel over time. The bulkiness of external power supplies also detracts from the sleek aesthetic required in retail environments.

The solution

The patent describes a modular system where the electrical circuit is completed through the mechanical connection itself.

1. Frame Modules: Vertical mullions and horizontal rails are made of aluminum section bars. Each bar contains a hollow cavity for the power supply adaptor and a groove for the LED light bar.
2. Integrated Connectors: At the ends of the mullion modules and within the corner pieces, specific power connectors are installed. These are not loose wires but rigid interface points.
3. Automatic Mating: When a mullion module is pushed into a corner piece, the power connector on the mullion plugs directly into the corresponding socket inside the corner’s cavity. This creates an electrical path instantly.
4. Locking Mechanism: A connector component with spring steel plates and a cam lever locks the modules together. Turning the handle engages the cam, pressing the spring plate against the side wall of the adjacent module, securing the joint mechanically and maintaining the electrical contact pressure.
5. Graphic Insertion: The outer faces of the aluminum profiles feature “cloth inserted troughs.” Fabric graphics are simply slid into these channels, held by friction and the frame geometry, eliminating the need for tools or adhesives.

Who it is for

• Trade Show Exhibitors who need to set up and tear down booths quickly. The lack of wiring means one person can assemble the display in minutes.
• Retail Chain Managers installing branded signage in stores. The modular nature allows for easy replacement of damaged sections without rewiring the entire fixture.
• Museum and Gallery Installers requiring clean, unobstructed visuals. The internal power routing keeps cables hidden, and the thin profile maximizes viewing area.
• Custom Furniture Builders integrating lighting into cabinets or shelving units. The ability to create non-90-degree angles (hexagons, diamonds) offers unique design possibilities.

How it works

The main parts

Operating steps

1. Prepare Modules: Insert the LED strip into the rear groove of the section bar and place the power adapter in the central cavity. Ensure the end connectors are exposed.
2. Join Verticals: Slide two mullion modules into a corner piece. The internal power connectors align and plug together.
3. Lock Frame: Insert the mechanical connector (3) into the link slots (1-b) of the adjacent bars. Rotate the locking handle (4). The cam presses the spring plate, locking the bars firmly.
4. Add Horizontals: Attach upper and lower transverse frame modules to the top and bottom corners. Again, power connectors mate automatically.
5. Insert Graphics: Slide the fabric poster into the front or back troughs of the frame.
6. Connect Power: Plug the main cord into the external socket (8) on the designated corner. The entire array lights up.

Applications

Retail Pop-Up Stores

Brands can deploy temporary storefronts in shopping malls. The tool-free assembly allows staff to erect multiple display columns in a single afternoon. If a panel gets scratched, it can be swapped out in seconds without cutting wires.

Museum Exhibit Cases

Curators need precise control over lighting angles. The modular system allows for creating hexagonal or triangular vitrines around artifacts. The hidden wiring ensures no visual clutter distracts from the object, and the uniform LED distribution provides consistent illumination.

Airport Advertising Panels

Large-format backlit posters in transit hubs require high uptime. The plug-and-play design simplifies maintenance. Technicians can replace a failed driver or LED strip by unlocking just that section, rather than dismantling the entire wall-mounted unit.

Corporate Reception Areas

Companies use these light boxes for brand messaging behind reception desks. The ability to form diamond or angular shapes adds architectural interest compared to standard rectangular frames. The slim depth saves space in tight lobbies.

Where it is less suitable

• Outdoor Weatherproofing: The patent describes internal cavities and sliding fabric graphics. Without additional sealing gaskets described in the claims, water ingress could damage the electronics if used in rain or snow.
• Very Large Spans: While modular, the structural integrity relies on the corner nodes. Extremely wide panels may require intermediate supports not detailed in this specific utility model.
• High-Voltage Systems: The design integrates low-voltage DC adapters directly into the frame. It is not intended for direct AC line voltage integration without separate safety enclosures.