Rotational Lighting Device Cable Entanglement Prevention
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Solution Overview
Problem
Conventional lighting devices that allow directional adjustment of irradiation face challenges in preventing cable entanglement due to rotational movement, particularly when the device is rotated horizontally.
Innovation Solution
A driving device with a first rotational unit and a holding unit is designed, where the holding unit is positioned on the opposite side of the first rotational unit and moves with it, keeping the cable along the first rotating shaft to prevent entanglement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lighting device allows rotational movement to change irradiation direction to any direction, then the adaptability and versatility of the device is improved, but the cable becomes entangled due to rotational movement
Solution Approach 1:
A cable guiding member is introduced as an intermediary component between the rotational unit and the cable. This guiding member rotates together with the rotational unit and guides the cable along the rotational shaft, preventing the cable from becoming entangled while allowing free rotational movement for irradiation direction adjustment.
Solution Approach 2:
The cable is routed along the rotational shaft axis (one dimension) rather than allowing it to move freely in three-dimensional space during rotation. By constraining the cable movement to a specific dimensional path (along the shaft), the system prevents entanglement while maintaining rotational capability.
2Reliability
If the cable is held at a position away from the first rotational unit, then the cable is protected from damage during rotation, but the device complexity increases due to the additional holding unit
Solution Approach 1:
The cable holding function is merged with the cable guiding member that already rotates with the rotational unit. The guiding member simultaneously performs two functions: guiding the cable along the rotational shaft to prevent entanglement, and holding the cable at a safe position to protect it from damage. This integration avoids adding separate complex holding mechanisms.
Solution Approach 2:
The cable guiding member is designed to perform multiple functions: it guides the cable during rotation, holds the cable at a protected position, and rotates synchronously with the rotational unit. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Data Source
AI summary
A driving device of an embodiment includes a first rotational unit and a holding unit. The first rotational unit is disposed with an object to be operated on one surface side intersecting with a first rotating shaft, and rotationally moves around the first rotating shaft with the object to be operated. The holding unit is disposed on another surface side of the first rotational unit, rotates with the first rotational unit, and holds a cable for supplying power to the object to be operated at a position away from the first rotational unit toward the other surface side, while placing the cable along the first rotating shaft.