Alarm device
A detachable alarm device amplifies vehicle lighting and sound signals to enhance safety at construction sites, addressing the insufficiency of existing systems in noisy or dim environments and simplifying installation for all vehicles.
Patent Information
- Application Number
- JP2021117157
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-07-15
- Publication Date
- 2025-01-22
- Estimated Expiration
- 2041-07-15
AI Technical Summary
Existing vehicle alarm systems, such as backlights and back buzzers, are insufficient in noisy or dimly lit environments, leading to increased contact accidents at construction sites, and modifying these systems for compatibility is time-consuming and difficult for infrequent site visitors.
A detachable alarm device with a sensor and transmitter, powered by a battery, that amplifies lighting and sound signals from existing vehicle systems, allowing easy installation and adjustment to suit construction site conditions.
The alarm device effectively prevents collisions by enhancing lighting and sound alerts, ensuring visibility and audibility, even in challenging environments, without requiring permanent modifications to vehicles.
Smart Images

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Abstract
Citation Information
Patent Citations
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