Light Fixture Handle Positioning for Carrying Stability
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Solution Overview
Problem
Large light fixtures are difficult to carry due to their size and weight, leading to tilting and potential dropping when handles are placed low relative to the gravitational center, and existing handles below the rotational center can cause instability during carrying.
Innovation Solution
Placing handles at the upper part of the yoke, above the gravitational and rotational centers of the light fixture, allows for stable and efficient carrying, with options to extend handles outward or upward for increased accessibility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If handles are placed low at the light fixture relative to the gravitational centre, then the light fixture structure remains compact, but lifting the light fixture becomes difficult with risk of tilting and dropping
Solution Approach 1:
The handle is repositioned from a low horizontal position to a high vertical position on the yoke, extending above the gravitational centre. This dimensional change in handle placement transforms the carrying mechanics, allowing the operator to lift from above the centre of gravity, which stabilizes the load and prevents tilting while maintaining structural compactness.
2Shape
If handles are placed below the rotational centre of the head, then the light fixture can be compact, but the head may move during carrying leading to instability
Solution Approach 1:
The handle is positioned above the rotational centre of the head to create a counterbalancing effect. When the head rotates during carrying, the high handle position creates a stabilizing moment that counteracts the destabilizing moment from head movement, preventing the light fixture from tipping or dropping.
3Ease of operation
If handles are placed at the upper part of the yoke above the gravitational centre, then carrying stability is improved, but the light fixture height increases
Solution Approach 1:
The handle is integrated as a segment of the yoke structure itself, extending from the upper part of the yoke rather than being a separate附加 component. This segmentation approach allows the handle to utilize the existing yoke height while providing stable carrying above the gravitational centre, minimizing additional overall height increase.
Data Source
Figure 1~2
AI summary
The present invention relates to a light fixture comprising a head, a yoke and a base, which yoke comprises handles for carrying the light fixture. Placing the handle at the upper part of the yoke is very efficient if the light fixture is to be carried. Access to these handles is possible directly in a flight case because above the yoke there is sufficient space for getting access to the handle. In terms of small light fixtures, an individual can easily carry the light fixture by these handles and safely lift the light fixture from a flight case. In the case of very large light fixtures, two individuals can from both sides of a flight case carry the light fixture by the handles. By placing the handles as high as possible in relation to the light fixture, the light fixture can be carried in a very stable manner.