Indoor Pest Repellent Device with Dynamic Light Irradiation
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Solution Overview
Problem
Existing indoor pest repellent devices are not effective in efficiently repelling a wide range of pests, including mammals, birds, and arthropods, as they often rely on blinking lights that can be easily predicted, leading to incomplete pest exclusion and potential attraction of phototactic insects.
Innovation Solution
The device employs a light source with a convex lens to concentrate and displace the light irradiation region on the floor and walls, utilizing a rotation mechanism to create an unpredictable annular light pattern that mimics predator movement, combined with multiple light sources and irregular blinking to confuse and repel pests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blinking light is emitted to repel pests, then pests are repelled, but the light pattern becomes predictable and phototactic insects are attracted
Solution Approach 1:
The patent applies the dynamics principle by making the light irradiation region move across the floor and walls through rotation mechanisms, rather than using fixed blinking lights. The light source rotates to change the irradiation region's position continuously, creating an unpredictable dynamic pattern that confuses pests and prevents phototactic insects from tracking and being attracted to a fixed light location.
2Device complexity
If fixed light pattern is used, then device structure is simple, but pests can predict and ignore the light signal
Solution Approach 1:
The patent introduces rotation mechanisms that dynamically change the light irradiation region's position across the floor and walls. This dynamic movement adds complexity to the light emission mechanism, enabling the light pattern to be unpredictable and effective in repelling pests who cannot predict where the light will appear next.
Solution Approach 2:
The patent employs periodic rotation of the light source to create cyclically changing light irradiation regions. This periodic action ensures the light pattern constantly evolves, preventing pests from adapting to or predicting the light signal, thereby maintaining high repelling effectiveness over time.
3Use of energy by stationary object
If light irradiation region is stationary, then energy consumption is low, but pest exclusion is incomplete
Solution Approach 1:
The patent uses rotation mechanisms to dynamically move the light irradiation region across different areas of the floor and walls. This dynamic coverage ensures complete pest exclusion by systematically scanning all potential pest approach paths, whereas a stationary light would leave gaps in coverage.
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
This solution effectively repels pests by creating an unpredictable light pattern that confuses them, preventing approach and encouraging outdoor escape through a door that can only open from indoors, thereby enhancing pest elimination efficiency.
Implementation Method 1
a light concentrating part concentrating a portion of light emitted from the light source; the light concentrating part includes a convex lens
Data Source
AI summary
This indoor pest repellent device (10) is provided with: a light source (11); a light concentrating part (the first light concentrating part (13)) which concentrates a portion of diffused light (LS) emitted from the light source (11); and a first displacement unit (the rotation mechanism (14)) which changes the relative position of the first light concentrating part (13) relative to the light source (11), and which displaces the irradiation region (the light irradiation region (SP1)) of the light from the first light concentrating part (13), said irradiation region being formed on a floor. The light concentrating part is provided with a convex lens.