Vehicle Lighting Device Vibration Absorber Damper
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Solution Overview
Problem
Lighting devices in vehicles experience vibrations due to the weight of the optical module, leading to flickering light beams and potential structural damage, as existing connections fail to dampen these vibrations effectively.
Innovation Solution
A lighting device with a vibration absorber system, featuring a damper with flexible portions connected to a bracket, which absorbs vibrations by mounting between the optical module and the lighting device's interior elements, thereby reducing resonance and flickering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical module is connected to the bracket by rigid connection points, then the structural integrity is maintained, but vibrations are transferred causing light beam flickering
Solution Approach 1:
A damper is introduced as an intermediary element between the optical module and the bracket. The damper comprises a mounting portion and at least two flexible portions that extend from either side of the mounting portion. The flexible portions rely on walls of the bracket and are more flexible than the mounting portion, creating a compliant connection that absorbs vibrations while maintaining structural support.
2Object-generated harmful factors
If the connection points are made more flexible to reduce vibrations, then light beam stability is improved, but structural support is weakened
Solution Approach 1:
The damper exhibits local quality differentiation where the flexible portions are designed to be more flexible than the mounting portion. This creates a gradient of stiffness within the connection system, allowing vibration absorption at the flexible portions while maintaining structural support through the stiffer mounting portion that connects to the bracket.
3Object-generated harmful factors
If the optical module design is changed to eliminate vibrations, then vibration problems are solved, but other functions and light beam stability may be impacted
Solution Approach 1:
The vibration absorption function is extracted from the optical module design itself and placed into a separate, dedicated damper component. This allows the optical module to maintain its original design and functions while the damper independently handles vibration attenuation, avoiding any impact on optical performance.
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 effectively attenuates vertical vibrations, eliminating light beam flickering and enhancing driving comfort without altering the optical module's design, ensuring stable light distribution even on rough roads.
Implementation Method 1
the at least one connection point is provided with a damper. The damper comprises at least two flexible portions extending from either side of the connection point and each relying on a wall of the bracket
Implementation Method 2
The at least two flexible portions are more flexible than the mounting portion
Data Source
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AI summary
The present invention relates to a lighting device for a motor vehicle. The lighting device comprises an optical module 100 and a bracket 125 for supporting the optical module 100. The optical module 100 is connected to the bracket 125 by at least one connection point 130, 135, 140 of the optical module. In an aspect, a connection point 135, 140 is provided with a damper 110 comprising a mounting portion 115 and at least two flexible portions 120 extending from either side of the connection point 135, 140 and each relying on the wall of the bracket 125. The damper 110 is designed in such a way as to absorb the vertical vibrations to which the lighting device is subjected. These technical measures allow thus to eliminate the flickering problem of the lighting beam.