Refrigerator Dispenser Lamp Control for Dark-Use Visibility
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Solution Overview
Problem
Users face difficulties in using a refrigerator dispenser at night or in dark environments due to the inability to recognize the amount of ice or water dispensed without turning on a light fixture, and challenges in locating the dispenser in low-light conditions.
Innovation Solution
An apparatus and method for controlling a lamp on a refrigerator dispenser, which includes a sensor to measure surrounding brightness and a control unit to adjust the lamp's brightness based on a reference intensity, ensuring the dispenser is illuminated only when necessary, and a sensor to detect the presence of a user for maximum brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lamp is installed within the dispenser to illuminate the dispenser, then the user can recognize the amount of ice or water and locate the dispenser in dark environments, but the lamp consumes additional energy and increases device complexity
Solution Approach 1:
The lamp's illumination state is made dynamic rather than static. The control unit automatically adjusts the lamp between on and off states based on real-time brightness detection from the sensor, allowing the system to adapt to changing environmental lighting conditions and user presence, thereby reducing unnecessary energy consumption while maintaining illumination when needed.
Solution Approach 2:
A feedback loop is established where the sensor continuously monitors ambient brightness levels and user presence, sends this information to the control unit, which then adjusts the lamp state accordingly. This closed-loop control system ensures the lamp operates only when necessary, optimizing energy efficiency while maintaining adequate illumination for dispenser visibility and ice/water amount recognition.
2Ease of operation
If the lamp is turned on automatically in dark environments, then the user can use the dispenser conveniently, but the lamp may remain on unnecessarily during daytime or well-lit conditions, increasing energy consumption
Solution Approach 1:
The sensor provides continuous feedback on ambient brightness levels to the control unit, which uses this information to make intelligent decisions about lamp operation. This feedback mechanism prevents unnecessary lamp activation during daytime or well-lit conditions while ensuring automatic illumination when the environment is dark, thus balancing ease of operation with energy conservation.
Solution Approach 2:
The system changes the operational parameter of the lamp (on/off state) based on changes in the environmental parameter (ambient brightness). By monitoring brightness levels and adjusting the lamp state accordingly, the system adapts to different lighting conditions, enabling convenient nighttime operation while avoiding energy waste during daytime or already-lit conditions.
3Loss of energy
If a sensor and control unit are added to control the lamp, then the lamp operation can be optimized for energy efficiency, but the device complexity increases
Solution Approach 1:
The control system operates autonomously without requiring user intervention. The sensor automatically detects ambient brightness and user presence, the control unit processes this information and makes decisions about lamp operation, and the lamp responds accordingly. This self-service approach minimizes the need for complex user interfaces or manual controls while achieving energy optimization through automatic adaptation to environmental conditions.
Solution Approach 2:
The sensor and control unit serve multiple functions: detecting ambient brightness levels, sensing user presence, determining when illumination is needed, and controlling the lamp state. By consolidating these related functions into a single integrated control system, the patent reduces overall device complexity compared to having separate systems for each function, while still achieving comprehensive energy optimization.
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 easy and convenient use of the dispenser at night by providing adequate illumination without turning on external lights and allows for customizable lighting based on the environment, enhancing user experience and energy efficiency.
Implementation Method 1
a sensor for measuring the surrounding brightness
Implementation Method 2
at least one lamp for illuminating the dispenser
Data Source
AI summary
An apparatus is provided for controlling a lamp of a refrigerator. The apparatus may include a dispenser provided on a refrigerator door and a lamp installed within the dispenser for illuminating the dispenser. The dispenser may include a rotary member that rotates as an operation lever provided in the dispenser is operated and a duct door for selectively opening and closing an ice duct. The rotary member may include a rotary shaft supported by side walls of the dispenser and a connector part that extends from the rotary shaft. The duct door may be coupled to the connection part.