Window-Sky Illumination Layout Using One Light Source
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Solution Overview
Problem
Existing illumination devices require multiple light sources for simulating a sky and poured light through a window, leading to increased device size, structural complexity, and energy consumption, and limit the placement and number of devices due to the need for separate light sources.
Innovation Solution
An illumination device with a diffuser having a scattering structure and two light exit surfaces, along with a sunshine formation portion and turning portion, shares a common light source to simulate a sky and poured light, reducing device size and complexity while allowing for flexible placement and reproduction of natural scenes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light sources are provided for simulating sky and poured light separately, then the illumination quality for different purposes is improved, but the device size and structural complexity increase
Solution Approach 1:
A single light source is designed to perform multiple functions by illuminating different regions of a diffuser. The light source unit illuminates both the sky simulation light-emitting region and the poured light simulation light-emitting region, allowing one light source to replace what would traditionally require separate light sources for each function.
Solution Approach 2:
The solution transitions from a vertical stacking approach (multiple light sources at different heights) to a horizontal planar distribution approach. By distributing light-emitting regions across different areas of the diffuser in the same plane, the system achieves multiple illumination functions without increasing vertical device height.
2Illumination intensity
If multiple light sources are provided for different parts, then the illumination quality for sky and poured light is improved, but the number of wiring elements and heat dissipation mechanisms increase
Solution Approach 1:
The single light source unit serves multiple illumination purposes simultaneously. By designing the light source to illuminate both the sky simulation region and the poured light simulation region, the system eliminates the need for separate wiring harnesses and heat dissipation mechanisms that would be required for multiple independent light sources.
Solution Approach 2:
The patent combines multiple light-emitting functions into a single integrated light source unit. This merging approach consolidates the wiring requirements and heat dissipation needs into one unified system, reducing the overall complexity compared to having separate light sources for each illumination function.
3Illumination intensity
If separate light sources are used for sky simulation and poured light simulation, then the color and intensity distribution are optimized, but the energy consumption increases
Solution Approach 1:
The single light source unit is designed to provide optimized color and intensity distribution for both sky simulation and poured light simulation simultaneously. By carefully positioning and controlling the light source, the system achieves function-specific illumination quality without the energy penalty of running multiple separate light sources.
Solution Approach 2:
The light source continuously provides useful illumination across multiple regions with a single energy input. Rather than having multiple light sources each consuming energy independently, the system uses one light source to continuously serve multiple illumination functions, reducing total energy consumption while maintaining continuous useful action in all regions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves size reduction, structural simplification, and the ability to reproduce natural scenes without limitations on placement or number of devices, while optimizing energy use.
Implementation Method 1
a diffuser (100) having a scattering structure to scatter light that has entered the diffuser
Implementation Method 2
a turning portion (2) to guide the second outgoing light toward the sunshine formation portion (3)
Data Source
AI summary
Regarding an illumination device reproducing a sky seen through a window, an object is to achieve further size reduction and structure simplification and reproduce a more natural scene without limiting provision places and the number of provided devices. An illumination device of the present disclosure includes: a light source; a diffuser having a scattering structure to scatter entering light, and having at least one light entrance surface, a first light exit surface from which first outgoing light including scattered light produced by the scattering structure goes out, and a second light exit surface from which second outgoing light different from first outgoing light goes out; a sunshine formation portion provided at least at one position around the diffuser, and having a light-transmitting member; and a turning portion to guide second outgoing light toward the sunshine formation portion.