Analog Wristwatch Dial Lighting Synchronization
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Solution Overview
Problem
Existing analog wristwatches with electroluminescent lighting struggle to provide immediate and intuitive indication of time, especially in low-light conditions, as they either illuminate the entire dial or specific portions intermittently, lacking a seamless synchronization with the watch hands' movement.
Innovation Solution
An analog wristwatch with electroluminescent lighting means that can progressively and automatically illuminate specific dial sectors in synchrony with the movement of the hour and minute hands, allowing for intuitive time reading through controlled activation and deactivation based on predefined modes, using an electronic control unit and user-operable button.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the entire dial is illuminated by electroluminescent lighting, then visibility in low-light conditions is improved, but energy consumption increases and the lighting may distract the user from other functions
Solution Approach 1:
The dial is divided into multiple sectors, each with its own electroluminescent lighting means. The control unit activates only the specific sector corresponding to the current hour, rather than illuminating the entire dial. This segmentation allows for reduced energy consumption while maintaining visibility of the relevant time information.
Solution Approach 2:
Different portions of the dial receive different lighting treatment - only the sector corresponding to the current hour is illuminated, while other sectors remain dark. This local quality approach ensures that energy is concentrated where needed for time reading, improving efficiency and reducing distraction.
2Reliability
If electroluminescent lighting is activated continuously, then time reading is always clear, but the lighting becomes distracting and energy is wasted
Solution Approach 1:
The electroluminescent lighting is activated periodically based on the hour indicated by the watch hands, rather than continuously. The control unit monitors the hour hand position and activates lighting only during hours when time reading is needed, creating a periodic lighting pattern that maintains reliability while reducing distraction.
Solution Approach 2:
The system uses feedback from the watch hands' position to control the lighting activation. The control unit continuously monitors the hour hand position and adjusts lighting activation accordingly, ensuring lighting is provided only when and where needed for time reading, thus maintaining clarity without causing distraction.
3Device complexity
If conventional electroluminescent lighting is used without synchronization, then the lighting mechanism is simple, but the lighting does not provide immediate and intuitive indication of time passing
Solution Approach 1:
The control unit receives feedback from the mechanical movement regarding the position of the hour and minute hands. Based on this feedback, the system automatically activates the appropriate dial sector lighting, providing immediate and intuitive time indication without requiring complex user input or manual controls.
Solution Approach 2:
The lighting system serves itself by automatically detecting the current time through the hand positions and activating the corresponding sector lighting without external intervention. This self-service mechanism provides intuitive time indication while keeping the control mechanism relatively simple, as the system uses the existing mechanical movement information.
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 immediate and intuitive time reading by synchronizing dial lighting with the watch hands' movement, enhancing visibility in low-light conditions without distracting the user from other functions, particularly useful at night or in poorly lit spaces.
Implementation Method 1
a lighting device arranged to light the dial (10), including electroluminescent lighting means (20)
Data Source
Figure 1~2
Figure 3~4
AI summary
The watch comprises a main dial (110) in which at least one pair of hands (112, 114) for indicating the hours and the minutes, respectively, are received, first and second secondary dial (130, 132) for the timing function, in which a first hand (134) for measuring the seconds and a second hand (136) for measuring the minutes are received, respectively, and a lighting device for lighting the main dial (110) and/or the secondary dials (130, 132). The lighting device (118) includes electroluminescent lighting means (120) and control means (124) arranged to control automatically the activation and deactivation of the electroluminescent lighting means (120) to light each time at least one portion of the main dial (110) and/or of the secondary dials (130, 132) according to the passing of the time indicated by the watch.