Pivoting Mullion With Integrated Lighting for Display Case Doors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional mullions in temperature-controlled storage devices are stationary, limiting the size and shape of items that can be transported and reducing accessibility by permanently dividing the opening, and do not provide adequate illumination for viewing items when the doors are closed.
Innovation Solution
A pivoting mullion is introduced, which is rotatable relative to the display case door, providing a support surface when closed and incorporating a lighting element that activates when the door is closed to illuminate items through a transparent surface, allowing for improved accessibility and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a stationary mullion is used to divide the door opening, then the door structure is simplified and provides a support surface, but the size and shape of items that can be transported through the opening is limited and accessibility is reduced
Solution Approach 1:
The mullion is made pivotable rather than stationary, allowing it to rotate between a first position (when the door is open) and a second position (when the door is closed). This dynamic configuration enables the mullion to provide support when needed while clearing the opening for item transport when the door is open, resolving the contradiction between providing structural support and maintaining accessibility.
2Length of moving object
If a stationary mullion permanently divides the opening, then the door structure is stable, but the size and shape of items that can be transported through the opening is limited
Solution Approach 1:
The pivotable mullion transitions from a static divider to a dynamic element that can change its position. When the door is open, the mullion rotates to clear the opening, allowing larger items to pass through. When the door is closed, it returns to providing structural support and division, thus maintaining both item transport capability and structural stability.
3Illumination intensity
If the display case door has a transparent surface for viewing items, then visibility is improved, but adequate illumination is not provided when the door is closed
Solution Approach 1:
The lighting element is integrated with the pivotable mullion structure itself, merging the support function and illumination function into a single component. This eliminates the need for separate lighting systems mounted on the door frame or interior, providing adequate illumination while maintaining a clean, simple overall structure.
Solution Approach 2:
The lighting element on the mullion serves the display case door's illumination need automatically. When the mullion is in the closed position, it provides light to illuminate items through the transparent surface, and when the door opens, the lighting element moves with the mullion, eliminating the need for separate control mechanisms.
4Illumination intensity
If a lighting element is added to illuminate items when the door is closed, then visibility through the transparent surface is improved, but the device complexity increases
Solution Approach 1:
The lighting element is combined with the mullion body, integrating illumination functionality into the existing structural component. This approach adds lighting capability while minimizing overall device complexity by avoiding separate lighting assemblies, mounts, and control systems that would be required if the lighting were a standalone component.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A pivoting mullion (140) for a temperature-controlled storage device is provided. The pivoting mullion (140) includes a mullion body (144) pivotally attached to a display case door (102, 104) of the temperature-controlled storage device. The mullion body (144) is rotatable relative to the display case door (102, 104) between a first position when the display case door (102, 104) is open and a second position when the display case door (102, 104) is closed. The mullion body (144) is configured to provide a support surface against which the display case door rests when the mullion body (144) is in the second position and the display case door is closed. The pivoting mullion (140) further includes a lighting element (160) fixed to the mullion body (144) and configured to activate when the display case door (102, 104) is closed. Activation of the lighting element (160) illuminates items within the temperature-controlled storage device such that the items are visible through the display case door (102, 104) when the display case door (102, 104) is closed.