Fire Detector Light Guide Layout for Omnidirectional Visibility
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Solution Overview
Problem
Existing detectors with indicator lights positioned next to protruding protectors can obstruct the field of vision, necessitating strict installation direction management to ensure visibility, which is cumbersome.
Innovation Solution
The disaster prevention apparatus incorporates a light emitter that causes detection element protectors or light guides protruding from the outer cover to emit light, or utilizes thin portions of the outer cover to extend light emission surfaces for improved visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the indicator light is provided next to a protector protruding from the outer cover, then the detector can notify the state of the detector or monitoring region, but the protector blocks the field of vision depending on the viewing direction
Solution Approach 1:
The light emitter is extended along the protruding direction of the detection element protector, transforming the light emission from a single-point source to a linear light source extending in the protrusion direction. This dimensional extension allows light to be emitted from multiple angles simultaneously, ensuring visibility from any viewing direction without requiring strict installation direction management.
2Illumination intensity
If the indicator light is positioned to be visible from the entrance of the room, then the light-emitting state can be observed, but additional components and strict installation criteria are required
Solution Approach 1:
The light emitter is integrated with the detection element protector, merging the protective function and light emission function into a single unified structure. The light emitter utilizes the protruding detection element protector as its mounting base, eliminating the need for separate indicator light components and reducing installation complexity while maintaining visibility from any direction.
Solution Approach 2:
The detection element protector serves dual functions: protecting the detection element and serving as the mounting base for the light emitter. This multi-functionality reduces the number of components needed and eliminates the requirement for separate indicator light installations, simplifying both device structure and installation procedures while ensuring omnidirectional visibility.
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
Enhances visibility of the light-emitting state from any direction, reduces component count and cost, and improves design by allowing light emission from multiple angles without requiring additional components.
Implementation Method 1
a light emitter that outputs information by causing at least a part of the disaster prevention apparatus to emit light
Data Source
AI summary
A detector 100 includes an outer cover 11; and a light emitter that outputs information by causing at least a part of the detector 100 to emit light, wherein the light emitter causes at least a protective portion 12 to emit the light, the protective portion 12 accommodating a thermistor that detects a physical quantity of a detection target, and protruding from the outer cover 11, the protective portion 12 guides the light from the light emitter, and emits the light, the detector 100 further includes a light guide portion 111 formed in at least a part of the outer cover 11, and the light emitter causes the light guide portion 111 to emit the light, and a light emitting surface of the light guide portion 111 extends from a front portion side of the outer cover 11 to a side portion side of the outer cover 11, and the light emitting surface of the light guide portion 111 has a linear shape when viewed from the front portion side of the outer cover 11.