Rotary Lamp Assembly with Capacitive Sensor for Cargo Illumination
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Solution Overview
Problem
Automotive utility vehicles, such as SUVs, hatchbacks, and minivans, often have limited illumination in their cargo areas due to fixed lamp assemblies that do not adequately illuminate the space, especially when the liftgate is open.
Innovation Solution
A movable lamp assembly with a rotary bezel and a capacitive sensor that adjusts light intensity based on the bezel's rotational position, allowing the lamp to redirect light output and increase illumination range both inside and outside the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a fixed lamp assembly is used, then the structure is simple, but the illumination range is limited
Solution Approach 1:
The patent applies the dynamics principle by making the lamp assembly rotatable rather than fixed. The rotary bezel mechanism allows the lamp to change its orientation and redirect light output to different areas, transforming a static illumination system into a dynamic one that can adapt to various lighting needs both inside and outside the cargo area.
2Adaptability or versatility
If a rotary bezel mechanism is added, then the illumination coverage is improved, but the device complexity increases
Solution Approach 1:
The rotary bezel mechanism serves multiple functions: it redirects light to different areas (interior cargo area, exterior spaces, side areas) and works with the sensor system to provide adaptive illumination. This single mechanical component enables the lamp to perform multiple lighting tasks that would otherwise require separate fixed lamps positioned throughout the vehicle.
Solution Approach 2:
The patent incorporates a sensor that detects the rotational position of the bezel and provides feedback to a controller. This feedback mechanism allows the system to automatically adjust lighting parameters based on the actual orientation of the lamp, ensuring optimal illumination regardless of the bezel's position and enabling intelligent control of the multi-functional system.
3Productivity
If light intensity is dynamically adjusted, then the illumination effectiveness is improved, but the control system complexity increases
Solution Approach 1:
The sensor detects the rotational position of the rotary bezel and provides feedback to the controller, which then dynamically adjusts the light intensity accordingly. This feedback loop enables the system to optimize illumination effectiveness by matching light output to the actual lighting conditions and directional requirements without requiring complex manual control mechanisms.
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
Enhances light illumination in the cargo area and surrounding exterior spaces by dynamically adjusting light intensity and direction, providing better coverage and user satisfaction.
Implementation Method 1
the proximity sensor comprises a capacitive sensor; the capacitive sensor comprises at least one electrode provided on at least one of the bezel and the fixed supporting structure and a conductive structure provided on the other of the bezel and the fixed supporting structure, wherein the capacitive sensor generates a signal indicative of the position of the at least one electrode relative to the conductive structure
Data Source
AI summary
A vehicle is provided that includes a liftgate, a trim panel located on an interior side of the liftgate, and a rotary lamp assembly assembled on the trim panel. The rotary lamp assembly includes a rotary bezel and a lamp supported on the bezel, wherein the lamp assembly is rotatable about at least one axis to redirect light output from the lamp.