Vehicle Head Lamp Movable Shield for Light Efficiency
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Solution Overview
Problem
The luminance efficiency of vehicle head lamps is limited due to ineffective use of light shielded by the light shield, which restricts the performance of high and low beams, leading to poor head lamp efficiency compared to the light source's potential.
Innovation Solution
A head lamp design featuring a movable shield between the light source and reflector/lens, which can be hinged and powered by a solenoid to selectively shield or allow light passage, creating a space for enhanced light reflection and direction, thereby improving high beam performance with a simple configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a light shield is used to implement high beam and low beam, then beam direction control is improved, but light utilization efficiency deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the shield movable rather than fixed. The shield can dynamically change its position between shielding the lens (for low beam) and moving away to allow light reflection off its surface (for high beam). This dynamic adjustment enables the same component to serve dual purposes: controlling beam direction and reflecting light to improve efficiency.
Solution Approach 2:
The patent converts the harmful effect of light blocking into a beneficial reflection mechanism. Instead of simply blocking light to control beam direction, the shield is designed to reflect light toward the lens when positioned appropriately. This transforms the 'waste' of blocked light into useful illumination, improving overall light utilization efficiency while maintaining beam control functionality.
2Adaptability or versatility
If a shield blocks light to control high beam and low beam, then beam selection is improved, but head lamp efficiency deteriorates
Solution Approach 1:
The shield is designed to perform multiple functions: it acts as a beam selector by positioning itself to block or allow light to the lens, and simultaneously serves as a reflector to redirect light toward the lens for high beam generation. This multi-functionality eliminates the need for separate components and improves overall head lamp efficiency by utilizing light that would otherwise be wasted.
3Loss of energy
If a movable shield is added to improve light utilization, then device complexity increases, but light utilization efficiency improves
Solution Approach 1:
The patent merges the shielding function and the reflecting function into a single integrated component. The movable shield combines the role of beam control element and light reflector, eliminating the need for separate components. This merging reduces overall structural complexity while improving light utilization efficiency.
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 movable shield design increases light utilization efficiency, enlarges the high beam directing area, and enhances vehicle safety by optimizing the use of light, ensuring better obstacle detection at various distances.
Implementation Method 1
a reflector for reflecting the light forward from the light source
Implementation Method 2
a lens for transmitting the light being forwarded toward a front from the light source and the reflector
Implementation Method 3
a movable shield disposed between the light source and the reflector and the lens for selectively shielding a portion of the light being forwarded toward the lens from the light source and the reflector
Implementation Method 4
The head lamp may further include a solenoid connected to the movable shield for moving the movable shield upon having power supplied thereto
Data Source
AI summary
A head lamp in a vehicle may include a light source for emitting a light, a reflector for reflecting the light forward from the light source, a lens for transmitting the light being forwarded toward a front from the light source and the reflector, a holder having one end coupled to the lens and the other end coupled to the reflector to make the lens spaced at a predetermined distance from the reflector, and a movable shield disposed between the light source and the reflector and the lens for selectively shielding a portion of the light being forwarded toward the lens from the light source and the reflector, or not shielding the portion of the light being forwarded toward the lens from the light source and the reflector when being moved to create a space between the movable shield and a lower end of the holder to allow the light pass through.