Backview Mirror Warning Light with Diffused LED Illumination
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Solution Overview
Problem
Conventional blind spot warning light devices for backview mirrors emit point light sources that can be dazzling in night environments, posing a glare and hazard to drivers.
Innovation Solution
A warning light device for a backview mirror featuring a cone-shaped illumination rod system that diffuses light uniformly through a translucent plate, reducing glare and incorporating red and orange LED illuminating members activated by sensors to alert drivers of approaching vehicles in blind spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If point light source LED is used for blind spot warning, then the warning function is achieved, but the light causes dazzling glare in night environment
Solution Approach 1:
The patent introduces a translucent plate as an intermediary between the LED light source and the external environment. This plate diffuses the point light source into multiple scattered light rays, reducing the intensity and directionality of the emitted light while maintaining the warning function. The translucent plate acts as a mediator that transforms the harmful concentrated light into beneficial distributed light.
Solution Approach 2:
The patent changes the optical parameters of the light emission by using a translucent plate with specific translucency properties. The plate modifies the light distribution pattern, converting a concentrated point source into a distributed light field with reduced intensity in any single direction, thereby reducing glare while maintaining overall visibility.
2Reliability
If direct LED light emission is used, then the warning effect is clear and visible, but it causes discomfort and hazard to drivers in night conditions
Solution Approach 1:
The translucent plate serves as an intermediary element that preserves the warning effectiveness while eliminating the harmful glare. It allows the light to pass through and remain visible for the warning function, but simultaneously diffuses the light to prevent direct intense beams from reaching the driver's eyes.
Solution Approach 2:
The patent converts the harmful concentrated light into a beneficial distributed light pattern. The same LED light source that initially caused glare is transformed through the translucent plate into a safe, diffuse warning signal that maintains visibility without causing discomfort, effectively turning the harmful intense light into a beneficial soft warning signal.
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 solution effectively reduces glare and minimizes the risk of driver distraction by providing a uniform, indirect light emission that alerts drivers of blind spot vehicles without causing discomfort in night driving conditions.
Implementation Method 1
A plurality of illumination rods are disposed in the containment space and in front of the translucent plate facing the illuminating members... the translucent plate cover the opening... provides a uniform, indirect light emission that alerts drivers
Data Source
AI summary
A warning light device for a backview mirror has a backview mirror and a warning unit. The backview mirror has a casing and a mirror corresponding to each other. the mirror comprising a translucent region allowing the warning unit disposed in the casing to be aligned with the translucent region on the mirror. The warning unit has a lighting device, an illumination cover and a circuit board. The lighting device has a containment space and an opening connected to the containment space, the circuit board disposed in the containment space through the opening. The circuit board further comprising a plurality of illuminating members behind the opening; the illumination cover having a translucent plate configured to cover the opening; a plurality of illumination rods disposed in the containment space and in front of the translucent plate facing the illuminating members.