Illuminated Toothbrush Traffic Light Timing Circuit
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Solution Overview
Problem
Individuals, especially children, often fail to brush their teeth for the recommended two to three minutes due to short attention spans and a lack of engagement with traditional toothbrushes.
Innovation Solution
A toothbrush equipped with a handle featuring a base and head, containing a cavity with flashing lights that simulate a traffic light sequence to encourage extended brushing time, using green, yellow, and red lights to indicate different brushing durations, powered by batteries and controlled by a timing circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional toothbrushes are used, then the device is simple and easy to use, but users cannot maintain brushing for the recommended two to three minutes due to short attention spans
Solution Approach 1:
The toothbrush uses periodic flashing lights in a traffic light sequence (green, yellow, red) to indicate different phases of the brushing process. The green light flashes during the first 30 seconds, yellow light flashes during the next 30 seconds, and red light flashes during the final 30 seconds, creating a rhythmic visual stimulus that maintains user engagement throughout the recommended brushing duration.
Solution Approach 2:
The invention employs color changes through three distinct lights (green, yellow, red) that flash in sequence to provide visual feedback to the user. Each color represents a different time phase, transforming the invisible passage of time into visible color transitions that capture and maintain user attention throughout the brushing process.
2Duration of action of moving object
If children are encouraged to brush their teeth longer, then oral hygiene improves, but children's short attention spans cause them to lose interest and stop brushing early
Solution Approach 1:
The periodic flashing of lights in alternating colors creates a dynamic and engaging visual experience for children. The rhythm of the flashing lights (green for 30 seconds, yellow for 30 seconds, red for 30 seconds) provides structured entertainment that maintains children's attention and makes the brushing activity more appealing and less monotonous.
Solution Approach 2:
The changing colors provide visual stimulation that appeals to children's natural attraction to bright, changing visuals. Each color transition signals a phase change in the brushing process, keeping children engaged and interested throughout the full recommended duration by providing continuous visual feedback and variety.
3Loss of information
If multiple lights are added to the toothbrush, then visual cues for time management are provided, but the device complexity and manufacturing cost increase
Solution Approach 1:
The timing function is segmented into three distinct phases, each represented by a separate light color. This segmentation allows the complex timing information to be divided into simple, easily distinguishable visual signals. Each light (green, yellow, red) independently indicates a specific time phase, making the overall time management system easier to understand and implement than a single complex indicator.
Solution Approach 2:
The three lights serve multiple functions: they indicate time passage, provide visual engagement, and signal phase transitions. This multi-functionality reduces the need for additional separate components, as the same lighting system simultaneously performs timing indication and user engagement functions, thereby limiting the increase in overall device complexity.
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 toothbrush effectively engages users by providing a visual cue to extend brushing time, ensuring proper oral hygiene through sequential light flashing that increases attention and adherence to recommended brushing periods.
Implementation Method 1
a green light positioned in the cavity and configured to flash for a first period of time
Implementation Method 2
a yellow light positioned in the cavity and configured to flash for a second period of time
Implementation Method 3
a red light positioned in the cavity and configured to flash for a third period of time
Implementation Method 4
One or more batteries may be positioned in the cavity for powering the green light, the yellow light, the red light, and the memory
Data Source
Figure 1
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AI summary
A toothbrush with a handle having a base and a head and defining a cavity positioned between the base and the head. The toothbrush also includes a plurality of bristles attached to the head of the handle, a green light configured to flash for a first period of time, a yellow light configured to flash for a second period of time, and a red light configured to flash for a third period of time. The toothbrush also includes a switch coupled to the handle for activating the green light, and a circuit for automatically activating the yellow light after expiration of the first period of time and for automatically activating the red light after expiration of the second period of time.