Vehicle Headlamp Switching Structure With Rotating Beam-Shaping Plate
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Solution Overview
Problem
Vehicle headlight systems face high manufacturing costs due to complex reflector structures and limited compatibility with different vehicle models, making it costly to switch between low-beam and high-beam modes and requiring redesign for various lamp seats.
Innovation Solution
A vehicle lamp design featuring a heat dissipating device, LED light source, electromagnet, reflector assembly, light-shaping plate, and intermediate plate, where the light-shaping plate is rotatably positioned between the reflector assembly and lens unit, driven by the electromagnet to change light beam modes, and the intermediate plate allows for adaptation to different lamp seat shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a reflector with curved and complicated structure is used to reflect both low-beam and high-beam lights, then the headlight can switch between low-beam and high-beam modes, but the manufacturing cost increases
Solution Approach 1:
The reflector is divided into two separate reflectors: a first reflector for low-beam light and a second reflector for high-beam light. Each reflector has a simpler structure optimized for its specific function, avoiding the need for a single complex reflector that must handle both beam types, thereby reducing manufacturing cost while maintaining switching capability
Solution Approach 2:
The light-shaping plate is made rotatable to dynamically switch between blocking the first reflector (for low-beam mode) and blocking the second reflector (for high-beam mode). This dynamic reconfiguration allows a single reflector assembly to serve multiple functions without requiring both reflectors to be permanently fixed, reducing overall structural complexity
2Reliability
If the vehicle light source is designed for specific lamp seat forms, then the headlight can be optimized for specific vehicle models, but the cost increases due to redesign and redevelopment for different models
Solution Approach 1:
The intermediate plate is designed with multiple through holes that can accommodate different lamp seat forms. This universal design allows the same vehicle light source assembly to be installed in various lamp seats across different vehicle models without requiring redesign, thereby reducing development costs while maintaining model-specific optimization where needed
Solution Approach 2:
The positions and configurations of the through holes in the intermediate plate can be adjusted to match different lamp seat parameters and forms. By changing the geometric parameters of the intermediate plate's mounting features rather than redesigning the entire assembly, the system adapts to different vehicle models with minimal cost
3Ease of operation
If a light-shaping plate is rotatably disposed and driven by an electromagnet, then switching between low-beam and high-beam modes is achieved, but the device complexity increases
Solution Approach 1:
The manual or mechanical switching mechanism is replaced with an electromagnet that actuates the light-shaping plate through magnetic force. This substitution eliminates complex mechanical linkages, gears, or linkages that would be required for manual operation, reducing overall device complexity while maintaining reliable switching functionality
Solution Approach 2:
The light-shaping plate serves as an intermediary element between the electromagnet and the reflectors. Rather than the electromagnet directly moving the reflectors or other complex components, it simply rotates the light-shaping plate, which then controls which reflector is active. This intermediary approach simplifies the electromagnet's design and reduces the complexity of the overall switching mechanism
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
Enables cost-effective switching between low-beam and high-beam modes while accommodating various vehicle models, reducing manufacturing costs and enhancing flexibility in headlight design.
Implementation Method 1
The electromagnet is disposed on the heat dissipating device. The driving rod is disposed between the electromagnet and the light-shaping plate. The electromagnet is capable of driving the driving rod to synchronously drive the light-shaping plate to be moved to the first position or the second position
Implementation Method 2
Light emitted from the LED light source is capable of being reflected by the reflector assembly and being irradiated outward through the lens unit
Data Source
AI summary
A vehicle lamp having a switching structure for low-beam and high-beam headlights is provided. The vehicle lamp includes a heat dissipating device, an LED light source, an electromagnet, a reflector assembly, a lens unit, a light-shaping plate, a driving rod, and an intermediate plate. The LED light source and the electromagnet are disposed on the heat dissipating device, and the light-shaping plate is rotatably disposed on the electromagnet. The driving rod is disposed between the electromagnet and the light-shaping plate, and the electromagnet drives the driving rod to synchronously drive the light-shaping plate to be moved to a first position or a second position. The intermediate plate is replaceably connected between the lens unit and the heat dissipating device.