Two-Level Illumination Bulb with Sensor Control
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Solution Overview
Problem
There is a need for a simple and cost-effective solution for low-level illumination that does not disrupt the circadian rhythm, suitable for night-time visibility without requiring special wiring, switches, or user setup, particularly for aging populations, pregnant women, and individuals with medical conditions, and also for emergency lighting in various settings.
Innovation Solution
A light bulb with two levels of illumination: a standard mode using internal circuitry to generate high lumen levels and a low-level night-light mode activated by ambient brightness and motion sensors, utilizing stored energy when external power is off, allowing for automatic operation without additional wiring or user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a night light provides continuous illumination, then visibility is improved, but sleep quality deteriorates due to circadian rhythm disruption
Solution Approach 1:
The night light operates intermittently rather than continuously, using motion sensors to detect activity and ambient light sensors to determine darkness levels. illumination is provided only when motion is detected in darkness, creating a periodic on-demand operation pattern that maintains visibility when needed while preserving sleep quality during rest periods
Solution Approach 2:
The system uses sensors to continuously monitor environmental conditions (ambient light levels, motion detection) and adjusts illumination accordingly. When the sensor detects darkness and motion, the light activates; when motion stops or light levels increase, the light turns off. This feedback mechanism ensures illumination is provided only when actually needed, resolving the contradiction between continuous visibility and sleep quality
2Adaptability or versatility
If a night light with motion sensors and ambient light sensors is used, then illumination is provided only when needed, but device complexity increases
Solution Approach 1:
The patent integrates multiple sensor functions (motion detection, ambient light sensing) and illumination modes (full brightness, night light mode) into a single light bulb unit. The bulb can operate as a standard light, a motion-activated night light, or both simultaneously, providing multi-functionality that justifies the added complexity through versatility
Solution Approach 2:
The patent combines the night light function with the standard lighting fixture, integrating sensors and control circuitry directly into the bulb. This merging eliminates the need for separate night light devices and complex wiring, consolidating multiple functions into a single replaceable bulb unit that simplifies installation and user interaction
3Ease of operation
If a night light is installed in a location without a suitable outlet, then proper placement is difficult, but illumination coverage is limited
Solution Approach 1:
The light bulb serves multiple functions through its dual-mode operation: it can be used as a standard lighting bulb in any fixture with a light switch, or as a motion-activated night light in fixtures without switches. This universality allows installation in virtually any location with a standard bulb socket, eliminating the need for specialized outlets while providing appropriate illumination for each use case
4Illumination intensity
If high lumen output lights are used instead of night lights, then visibility is improved, but impact on circadian rhythm increases
Solution Approach 1:
The system provides different illumination qualities for different needs: full brightness mode for general visibility and night light mode for low-level illumination. The night light mode uses reduced intensity (10-20 lumens) with warm color temperature specifically designed to minimize circadian rhythm impact while still providing sufficient visibility for nighttime activities
Solution Approach 2:
The system uses periodic motion-activated illumination rather than continuous high-intensity lighting. By detecting motion and providing brief periods of illumination only when activity is detected, the system achieves necessary visibility while dramatically reducing overall circadian rhythm impact compared to continuous high-lumen output lighting
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 bulb provides suitable low-level illumination only when needed, reducing sleep disruption and eliminating the need for complex setups or additional fixtures, while maintaining compatibility with the circadian rhythm by using red light in night-light mode.
Implementation Method 1
an internal charge storage element that is configured to store electrical energy from the external line power
Implementation Method 2
an ambient brightness sensor
Implementation Method 3
a motion sensor
Implementation Method 4
a first internal circuit that is configured to generate, from received external line power, a first illumination above a first brightness value
Data Source
AI summary
A light bulb has a first internal circuit that is configured to generate, from received external line power, a first illumination above a first brightness value. An internal charge storage element is configured to store electrical energy from the external line power. A second internal circuit has an ambient brightness sensor and a motion sensor. The second internal circuit is configured to generate, from the stored electrical energy, a second illumination below the first brightness value according to received signals from both the ambient brightness sensor and the motion sensor.