Rotatable Louvre Lighting Fixture for Glare and Reflection Control
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Solution Overview
Problem
Conventional lighting fixtures often cause glare and reflection issues, diminishing the viewing experience, especially when illuminating large objects like paintings from a high position.
Innovation Solution
A louvred lighting fixture with adjustable louvres that can rotate around a central axis, allowing for the positioning of light obscuring regions within the beam of light to minimize glare and reflection, featuring a hub, lighting arms, and inner and outer louvres with engagement means for adjustable light direction and obscuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional lighting fixtures are placed high up on the wall to illuminate large paintings, then the illumination coverage is improved, but glare and reflection increase
Solution Approach 1:
The lighting fixture is divided into multiple independent louvre blades that can be individually adjusted. Each blade acts as a separate light-blocking element, allowing precise control over light direction to eliminate glare while maintaining broad illumination coverage.
Solution Approach 2:
The louvre blades are made rotatable about a central axis, transforming the fixture from a static to a dynamic system. This allows the light obscuring regions to be positioned at different angles to control glare and reflection while maintaining optimal illumination coverage.
2Device complexity
If fixed lighting fixtures are used to illuminate paintings, then the structure is simple, but the ability to adjust light parameters is limited
Solution Approach 1:
The fixture incorporates rotatable louvre blades that can be adjusted to different positions, providing dynamic control over light parameters such as glare and spill while maintaining a relatively simple overall structure.
Solution Approach 2:
The adjustable louvre blades enable changing of light parameters (direction, intensity distribution) without fundamentally altering the fixture structure, achieving versatility through parameter modification rather than structural complexity.
Data Source
AI summary
A louvred lighting fixture comprising a lighting assembly and a louvre assembly. The lighting assembly comprises a lighting arm having a light emitting device. The louvre assembly comprises an outer louvre 19 and an inner louvre. The louvred lighting fixture 1 has an axis of rotation X-X, wherein the lighting arm, the outer louvre and the inner louvre each have a longitudinal axis of rotation that is coaxial with the axis of rotation X-X, so that, in use, the outer louvre and the inner louvre are rotated so that the forward light obscuring region and the rearward light obscuring region can be positioned within the beam of light emitted by the light emitting device.