Vehicle Rear Lamp Mask for Single-LED Road Warning Patterns
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Solution Overview
Problem
Current rear lamps with alarm functions for vehicles require multiple LEDs to form patterns, increasing manufacturing costs and reducing design flexibility due to their limited illumination range, making it difficult for nearby vehicles or pedestrians to recognize a reversing vehicle, especially in low-light conditions.
Innovation Solution
A rear lamp design that uses a single LED to form multiple patterns through a mask with integrated optical devices, including a first and second pattern optical device, which deflects light to create specific patterns on the road, improving visibility and reducing the number of light sources needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are used to form multiple patterns on the road, then the alarm function and visibility are improved, but the manufacturing cost increases and design freedom is reduced
Solution Approach 1:
The single LED performs multiple functions by projecting multiple patterns through different regions of the mask. The mask is designed with multiple optical paths that redirect light from one LED source to create several distinct patterns on the road, allowing one component to replace what would traditionally require multiple LEDs.
Solution Approach 2:
The mask acts as an intermediary component between the single LED and the road surface. It contains multiple reflective surfaces and optical structures that split and redirect the light from the single LED source to create multiple separate patterns, effectively mediating the transformation from one light source to multiple projected patterns.
2Reliability
If multiple LEDs are used to form multiple patterns, then the alarm function is improved, but the manufacturing cost increases
Solution Approach 1:
The mask structure is designed to provide multiple optical paths within a single component, allowing one LED to fulfill the role of multiple LEDs. This reduces the number of parts that need to be manufactured, assembled, and maintained, thereby reducing manufacturing costs while maintaining the reliability of the alarm function.
Solution Approach 2:
The patent merges the functions of multiple LEDs into a single LED source by combining multiple optical paths within the mask structure. This consolidation reduces the total number of components, simplifies the manufacturing process, and lowers costs while achieving the same safety alert effectiveness.
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 design reduces manufacturing costs, enhances design freedom, and improves the visibility of the reversing vehicle's situation for nearby vehicles or pedestrians by forming multiple patterns with a single LED, thereby enhancing safety in low-light conditions.
Implementation Method 1
a reflector (20) for reflecting a light emitted from the light source (10)
Implementation Method 2
a mask (40) coupled to the lamp housing (30) to transmit the light reflected by the reflector (20) to outside of the vehicle
Data Source
AI summary
A rear lamp with an alarm function for a vehicle includes a light source; a reflector reflecting a light emitted from the light source to a mask; a lamp housing accommodating the light source and the reflector therein; and a mask coupled to the lamp housing and transmitting the light reflected by the reflector to an outside of the rear lamp apparatus therethrough, and the mask includes a first optical device capable of forming a pattern on a road, thereby implementing an alarm function.