Vehicle Headlamp Module With Unified Beam Switching Circuit
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Solution Overview
Problem
Conventional motorcycle headlamps have a complex configuration with separate lighting circuits for high-beam and low-beam light sources, leading to complicated maintenance and increased power consumption and heat generation in high-beam mode.
Innovation Solution
A light source module that includes a first and second light source, each with its own optical system, and a single lighting circuit capable of switching between high-beam and low-beam modes, with a bypass switch to reduce power consumption and heat generation, and a controller to manage disconnections and maintain continuous illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate lighting circuits are used for high-beam and low-beam light sources, then the lighting function is reliable, but the device configuration becomes complicated and maintenance becomes troublesome
Solution Approach 1:
The patent combines the high-beam and low-beam lighting circuits into a single integrated lighting circuit that controls both light sources. This merging reduces the overall circuit complexity and simplifies maintenance while maintaining the reliability of both lighting functions through unified control and monitoring.
2Illumination intensity
If both high-beam and low-beam light sources are driven in high-beam mode, then the illumination intensity is sufficient, but the power consumption and heat generation increase
Solution Approach 1:
The patent implements dynamic control of the lighting circuit where the controller selectively activates only the high-beam light source when high-beam mode is required, rather than driving both light sources simultaneously. This dynamic switching reduces power consumption and heat generation while maintaining sufficient illumination intensity for the high-beam region.
3Device complexity
If a single lighting circuit controls both high-beam and low-beam, then the device complexity is reduced, but the control logic becomes more complex
Solution Approach 1:
The patent designs the single lighting circuit with multi-functional capability to handle both high-beam and low-beam control through unified control logic. The controller is programmed with comprehensive control logic that manages different lighting modes, light source selection, and fault detection, thereby reducing hardware complexity while automating the control functions.
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 simplifies maintenance, reduces power consumption and heat generation, and ensures continuous illumination by managing disconnections and switching between high-beam and low-beam modes efficiently.
Implementation Method 1
a first optical system and a second optical system, and a lighting circuit
Data Source
AI summary
A light source module is switchable between a high beam and a low beam, and is mounted on a vehicle. A first light source is arranged such that its output light is irradiated to a low-beam region by a first optical system. A second light source is arranged such that its output light is irradiated to a high-beam region by a second optical system. A lighting circuit supplies a driving current to the first light source in response to a turn-on instruction for either the high beam or the low beam. Furthermore, the lighting circuit supplies the output current to the second light source in response to a turn-on instruction for the high beam.