Vehicle Headlamp Beam Switching With a Movable Light-Shaping Plate
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Solution Overview
Problem
Existing car lamps with high beam and low beam switching structures have complex reflecting mirror groups, high manufacturing costs, and inefficient use of space due to the inclusion of heat sinks with LED light sources.
Innovation Solution
A vehicle lamp with a dipped and main beam headlight switching structure incorporating a heat-dissipating device, LED light source, electromagnet, light-reflecting assembly, lens assembly, light-shaping plate, and driving rod, where the light-shaping plate is rotatably positioned between the light-reflecting and lens assemblies, and the electromagnet drives the plate to change the light beam from near to far, optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switching structure with reflecting mirror group is used to switch between high beam and low beam, then the beam switching function is achieved, but the structure becomes complex and manufacturing cost increases
Solution Approach 1:
The patent extracts the light-shaping function from a complex reflecting mirror group and implements it using a simple movable light-shaping plate. The plate can be positioned in different locations to control light reflection paths, achieving beam switching without requiring complex curved reflecting surfaces. This simplifies the overall optical system while maintaining the high beam/low beam switching capability.
Solution Approach 2:
Instead of using a complex fixed reflecting mirror group to achieve beam switching, the patent inverts the approach by using a simple movable plate that blocks or redirects light paths. The switching is achieved by moving the light-shaping plate between different positions rather than using complex optical surfaces, thereby simplifying the structure.
2Temperature
If LED light sources with heat sinks are used, then effective heat dissipation is achieved, but the occupied volume increases and space utilization deteriorates
Solution Approach 1:
The patent merges the heat dissipation function with the structural support function by integrating the heat sink into the lamp housing or mounting structure. The heat dissipation fins are incorporated into existing structural components rather than being separate add-on elements, thereby achieving effective heat dissipation without increasing the overall occupied volume of the headlight assembly.
Solution Approach 2:
The heat sink structure is nested within the lamp housing or mounting structure. The heat dissipation fins are positioned within the available space of the headlight assembly, utilizing empty volumes and integrating with existing structural elements. This nested arrangement allows effective heat dissipation while maintaining compact overall dimensions and efficient space utilization.
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 allows for efficient space utilization and cost-effective production by enabling the switching between high and low beams while reducing the occupied volume, thus improving the lamp's functionality and manufacturing efficiency.
Implementation Method 1
the electromagnet is configured to drive the driving rod to move the light-shaping plate to the first position or the second position
Implementation Method 2
the light-reflecting assembly is configured to reflect light emitted by the LED light source to form reflected light
Implementation Method 3
an LED light source disposed on the heat-dissipating device
Implementation Method 4
car lamps using LEDs as light sources are usually equipped with heat sinks, which increase the occupied volume
Data Source
AI summary
The vehicle lamp having a dipped and main beam headlight switching structure includes a heat-dissipating device, an LED light source, an electromagnet, a light-reflecting assembly, a lens assembly, a light-shaping plate and a driving rod. The LED light source and the electromagnet are disposed on the heat-dissipating device. The light-shaping plate is rotatably disposed above the electromagnet. The driving rod is disposed between the electromagnet and the light-shaping plate. The electromagnet is configured to drive the driving rod to move the light-shaping plate to the first position or the second position, so as to change the reflected light to form near light or far light. An empty space is formed between the lens assembly and the heat-dissipating device for accommodating components.