Illumination Light Source with Human Detection and Variable Illuminance
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Solution Overview
Problem
Existing lighting systems with human detection sensors require costly replacements or adapters to integrate human detection functionality, leading to increased costs and installation challenges, and often lack control over illuminance variation before turning off.
Innovation Solution
An illumination light source with a light-emitting unit, a disturbance detecting unit, a timer circuit, and a driving circuit that varies illuminance and color temperature over specific periods to notify users of impending shutdown, allowing for easy integration with existing lighting systems without the need for costly replacements or adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a conventional lighting device is replaced with a lighting device having a human detection sensor, then the lighting apparatus can automatically detect human presence and control lighting, but the cost for using the lighting apparatus becomes high
Solution Approach 1:
The patent combines the human detection sensor, timer circuit, and driving circuit into a single integrated illumination light source unit. This merging eliminates the need for separate adapters or complex lighting devices, reducing overall system cost while maintaining automatic human detection and lighting control functions.
Solution Approach 2:
The illumination light source is designed to perform multiple functions: it serves as both the lighting source and the human detection system. The single unit can detect human presence, timer the lighting duration, and control the light emission, making it a universal solution that replaces multiple separate components and reduces cost.
2Extent of automation
If an adapter is attached between the lighting device and the illumination light source, then the lighting apparatus can have human detection sensor function, but the volume of the housing and the available installation space must match in physical space
Solution Approach 1:
By merging the human detection sensor, timer circuit, and driving circuit into the illumination light source itself, the patent eliminates the need for separate adapters. This integration ensures that the housing volume matches the available installation space without requiring additional components that would increase the overall volume.
3Extent of automation
If a lighting device having human detection sensor function is used, then the lighting apparatus can detect and respond to human presence, but the lighting device and the illumination light source need to be matched with respect to control operation
Solution Approach 1:
The patent merges the control operations into a single integrated unit where the illumination light source itself performs detection, timing, and light control functions. This eliminates the need to match separate lighting devices with the illumination light source, ensuring full control operation compatibility without requiring multiple compatible components.
4Loss of information
If a lighting device varies illuminance before turning OFF the light, then the lighting apparatus can notify user of impending shutdown, but a power source for supplying power to the illumination light source may be controlled in a specific state
Solution Approach 1:
The patent combines the illuminance variation control and power source control into the single integrated illumination light source unit. The driving circuit within the unit can vary the illuminance to notify users of impending shutdown while the power source is controlled in a specific state, all without requiring external power control systems or additional complex device matching.
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
Enables cost-effective and efficient notification of light shutdown by varying illuminance and color temperature, ensuring seamless integration with existing systems and reducing installation complexities.
Implementation Method 1
illumination light sources having light-emitting elements such as light-emitting diodes (LEDs)
Data Source
AI summary
An illumination light source includes: a light-emitting unit; a disturbance detecting unit which detects a specific disturbance; a timer circuit that times a first period and a second period, the first period starting from when the disturbance detecting unit detects the specific disturbance, a second period immediately following after the first period; and a driving circuit that turns ON the light-emitting unit at a start of the first period, causes the light-emitting unit to emit light during the first period, causes the light-emitting unit to emit light that is different from the light emitted during the second period, and turns OFF the light-emitting unit at an end of the second period.