Door-Mounted Nightlight with Position Sensor
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Solution Overview
Problem
Conventional nightlights do not effectively encourage children to keep their bedroom doors closed at night, potentially increasing the risk of fire spread during emergencies since they often remain open due to the desire for ambient light.
Innovation Solution
A door-mounted lighting apparatus that includes a lighting element and a door position sensor, where the lighting element turns on when the door is closed and turns off when it is open, encouraging children to keep their doors closed by providing illumination only when the door is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a nightlight is placed in the bedroom to provide illumination, then the child has security and comfort, but the child may keep the door open to access the light, increasing fire risk
Solution Approach 1:
The nightlight is mounted on the door rather than inside the bedroom, using the door as an intermediary structure. This positions the light source outside the bedroom while still providing illumination when the door is closed, eliminating the incentive for the child to leave the door open.
Solution Approach 2:
Instead of placing the nightlight inside the bedroom (conventional approach), the invention inverts the placement by mounting it on the exterior of the door. This reversal changes the spatial relationship between the light source and the child's space, making door closure necessary for light access.
2Object-affected harmful factors
If the nightlight is mounted on the door, then fire safety is improved by encouraging closed doors, but the device complexity increases due to sensor and control circuit requirements
Solution Approach 1:
The nightlight system is self-regulating through the door position sensor and control circuit that automatically detect door state and adjust lighting accordingly. The system serves itself by using the door's position to control the light without requiring manual intervention or complex programming.
Solution Approach 2:
The door position sensor provides feedback to the control circuit about the door's open/closed state, creating a closed-loop control system. This feedback mechanism enables automatic adjustment of the nightlight based on real-time door position information.
3Ease of operation
If the lighting element is always on to provide continuous illumination, then the child has constant security, but energy consumption increases and the fire safety benefit is reduced
Solution Approach 1:
The nightlight operates periodically based on door position rather than continuously. It turns on when the door is closed (providing security) and turns off when the door is open (saving energy), creating a periodic on/off pattern that balances security needs with energy conservation.
Solution Approach 2:
The lighting system transitions from a static always-on state to a dynamic state that adjusts based on door position. The control circuit modifies the lighting behavior in real-time, making the system adaptive to changing conditions while optimizing both security and energy efficiency.
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 solution effectively reduces the risk of fire spread by ensuring the bedroom door remains closed at night, enhancing fire safety by using a sensor-controlled lighting system that promotes the closed position of the door.
Implementation Method 1
the illumination assembly further includes a door position sensor
Data Source
AI summary
A lighting apparatus fixable to a door is disclosed. The lighting apparatus includes an illumination assembly. The illumination assembly includes a light element, a door position sensor, and a control circuit electrically coupled to the lighting element. The control circuit is configured to control an ON/OFF state of the lighting element based on one or more signals from the door position sensor. In some embodiments, the illumination assembly further includes a housing configured to house the lighting element. The housing is further configured to me mechanically attachable to the door. The control circuit may be further configured to switch from an OFF state to an ON state when the door is moved to a closed position. The control circuit may be further configured to switch the lighting element from an ON state to an OFF state when the door is moved to an open position.