Headlamp Lamp Unit with Separated Low and High Beam Sources
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Solution Overview
Problem
Existing headlamp designs suffer from poor heat resistance due to the close proximity of lower and high beam light sources, leading to concentrated heat emission and reduced lamp unit lifespan.
Innovation Solution
The lamp unit design separates the lower and high beam light sources vertically and horizontally, dispersing heat sources and incorporating angled reflecting surfaces to guide beams effectively, with independent control of high beam LEDs for adaptive driving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lower beam light source and high beam light source are arranged close together, then the headlamp structure is more compact, but the heat emitted by both light sources becomes concentrated, reducing heat resistance
Solution Approach 1:
The patent transitions from a planar arrangement of light sources to a three-dimensional spatial distribution. The lower beam light source is positioned in the upper region while the high beam light source is positioned in the lower region, utilizing vertical dimensionality to separate heat sources. This spatial dimensionality change allows both light sources to function effectively while preventing heat concentration, as the heat disperses in three-dimensional space rather than being confined to a single plane.
2Ease of manufacture
If the lower beam light source and high beam light source are arranged on the same light source substrate, then the manufacturing process is simplified, but the heat resistance of the headlamp deteriorates
Solution Approach 1:
The patent divides the light source assembly into distinct segments: the lower beam light source and the high beam light source are positioned on different substrates or at least in spatially separated regions. This segmentation isolates the heat-generating components, allowing each light source to be optimized independently while preventing thermal interference between them. The segmentation maintains manufacturing feasibility by organizing components into modular units that can be assembled systematically.
Solution Approach 2:
The patent introduces an intermediary structure (such as a heat dissipation channel, thermal barrier layer, or spacing component) between the lower beam light source and the high beam light source. This intermediary element serves as a thermal barrier that prevents direct heat transfer between the two light sources, thereby protecting the overall system from heat concentration while maintaining the functional integration of both light sources in the headlamp assembly.
3Illumination intensity
If the light sources are arranged to maximize illumination coverage, then the brightness distribution is improved, but the heat resistance is compromised
Solution Approach 1:
The patent achieves improved brightness distribution by utilizing three-dimensional light source arrangement rather than confined planar placement. The lower beam light source positioned in the upper region and the high beam light source positioned in the lower region create complementary illumination patterns that cover a wider field of view. This vertical dimensionality enables better light distribution across the road surface while the spatial separation prevents heat concentration, simultaneously improving both illumination intensity and heat resistance.
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 enhances heat resistance, improves brightness near the cutoff line, and enables adaptive driving beam functionality, ensuring better visibility and safety.
Implementation Method 1
a lower beam light source 10 and a high beam light source 20, wherein the lower beam light source 10 can be configured to emit lower beams, and the high beam light source 20 can be configured to emit high beams
Implementation Method 2
the lower beam reflecting surface 301 can be configured to reflect a part of the lower beams and guide them toward the front of the lamp unit 1
Implementation Method 3
the lens 40 can be configured to refract the lower beams and the high beams to the front of the vehicle including the headlamp 100
Implementation Method 4
a lower beam light source 10 and a high beam light source 20, wherein the lower beam light source 10 can be configured to emit lower beams, and the high beam light source 20 can be configured to emit high beams
Implementation Method 5
the high beam reflecting surface 302 can be configured to reflect a part of the high beams and guide them toward the front of the lamp unit 1
Implementation Method 6
the lens 40 can be configured to refract the lower beams and the high beams to the front of the vehicle including the headlamp 100
Implementation Method 7
the lower beam reflecting surface 301 can be configured to reflect a part of the lower beams and guide them toward the front of the lamp unit 1, and the high beam reflecting surface 302 can be configured to reflect a part of the high beams and guide them toward the front of the lamp unit 1
Implementation Method 8
the lens 40 can be arranged in a front direction of the light distribution member 30, and can be configured to refract the lower beams and the high beams to the front of the vehicle including the headlamp 100
Data Source
AI summary
Provided are lamp unit for headlamp, headlamp including lamp unit, and vehicle including headlamp. Lamp unit includes: lower beam light source, wherein the lower beam light source is configured to emit lower beams; high beam light source, wherein the high beam light source is configured to emit high beams; light distribution member, wherein the light distribution member includes lower beam reflecting surface, wherein the lower beam reflecting surface is configured to reflect part of the lower beams and guide them toward front of the lamp unit; and high beam reflecting surface, wherein the high beam reflecting surface is configured to reflect part of the high beams and guide them toward the front of the lamp unit; and lens, wherein the lens is arranged in front direction of the light distribution member and configured to refract the lower beams and the high beams to front of vehicle including the headlamp.