Vehicular Headlamp Shared Heat Sink for Third Light Source
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Solution Overview
Problem
Vehicular headlamps with additional third light sources for enhanced functionality face enlargement issues due to the need for separate cooling units for each light source, which increases size and complexity.
Innovation Solution
A vehicular headlamp design where the first, second, and third light sources share a single heat sink, with an optical member integrated with the projection lens to adjust light distribution, eliminating the need for separate cooling units and minimizing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a third light source is added to the vehicular headlamp, then the functionality is enhanced, but the headlamp size increases due to requiring separate cooling units
Solution Approach 1:
The patent combines multiple cooling units into a single integrated cooling unit that serves all light sources (first, second, and third light sources). This merging approach allows the headlamp to accommodate additional functionality through the third light source while avoiding proportional increases in cooling system size, thus resolving the contradiction between enhanced functionality and controlled headlamp volume.
2Reliability
If separate cooling units are provided for each light source, then each light source is adequately cooled, but the headlamp becomes enlarged
Solution Approach 1:
The patent implements a universal cooling unit that performs the cooling function for multiple light sources simultaneously. This multi-functional cooling unit maintains adequate cooling effectiveness for all light sources while occupying less space than multiple separate cooling units would require, thus resolving the contradiction between reliable cooling and compact size.
3Temperature
If multiple cooling units are included, then heat dissipation is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple cooling functions into a single integrated cooling unit, which maintains effective heat dissipation for all light sources while reducing the number of separate components. This consolidation improves temperature management without proportionally increasing device complexity, as the unified cooling unit has fewer parts and simpler integration requirements compared to multiple separate cooling units.
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 allows for the inclusion of a third light source without enlarging the headlamp, efficiently managing heat and optimizing light distribution while reducing the need for additional cooling components.
Implementation Method 1
The first light source, the second light source, and the third light source share a single heat sink
Implementation Method 2
a cooling unit is required to release the heat generated by the light sources
Data Source
AI summary
Provided is a vehicular headlamp including: a first light source that emits a first light serving as a low beam; a second light source that emits a second light serving as a high beam; a projection lens that transmits the first light and the second light; a third light source that emits a third light in response to at least one of an operation of a steering and an operation of a direction indicator; and an optical member that adjusts a light distribution of the third light. The first light source, the second light source, and the third light source share a single heat sink.