Vehicle Lamp Venting Through Hidden Fixation-Part Air Path
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Solution Overview
Problem
Conventional vehicle lighting devices suffer from mechanical failures due to pressure imbalances caused by temperature changes, leading to condensation and moisture ingress, which affects the lighting function and visual appeal, while existing venting mechanisms are visible and prone to contamination.
Innovation Solution
A hidden ventilation system with an air-permeable and water-impermeable membrane covers the vent passage, allowing pressure equalization without affecting the vehicle's aesthetics, using a flexible leg and fixation part to create a continuous pathway for air exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional venting mechanisms are provided in the housing of the lamp, then pressure equalization is achieved, but visual appeal is affected and contamination risk increases
Solution Approach 1:
The vent passage is extracted from the housing and relocated to the fixation part, which is positioned such that the vent opening is hidden from external view when the lighting device is mounted on the vehicle. This separates the venting function from the visible housing structure, maintaining visual appeal while achieving pressure equalization.
Solution Approach 2:
A membrane is introduced as an intermediary element covering the vent opening. This membrane allows air to pass through for pressure equalization while blocking mud, debris, dust, and high-pressure water jets from entering the lighting device.
2Reliability
If conventional venting mechanisms are provided in the housing of the lamp, then pressure equalization is achieved, but contamination from mud, debris, dust and water enters the lighting device
Solution Approach 1:
A membrane is introduced as an intermediary element covering the vent opening. This membrane allows air to pass through for pressure equalization while blocking mud, debris, dust, and high-pressure water jets from entering the lighting device.
Solution Approach 2:
The membrane is made of flexible, air-permeable material that allows pressure equalization while providing a physical barrier against contaminants. The flexible nature allows it to deform with pressure changes while maintaining its protective function.
3Object-affected harmful factors
If the lighting device is completely sealed, then protection from contaminants is achieved, but pressure buildup causes mechanical failure
Solution Approach 1:
The vent passage is extracted from the housing and relocated to the fixation part, creating a sealed housing with a separate, hidden venting path. This maintains the sealed structure for contaminant protection while providing pressure relief through the fixation part vent passage.
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
Prevents mechanical failures and condensation by maintaining pressure balance while keeping the exterior appearance intact and preventing contamination, ensuring effective lighting performance.
Implementation Method 1
The membrane is configured to be air-permeable and water impervious. Advantageously, the membrane allows air to pass through it, at the same time it does not allow the water to pass through it.
Implementation Method 2
the vent passage allows the space inside the lighting device to communicate with the outside atmosphere, thus preventing generation of overpressure inside the lighting device
Implementation Method 3
using a flexible leg and fixation part to create a continuous pathway for air exchange
Data Source
Figure 1~2
Figure 3~4A
Figure 4B~4C
AI summary
The present invention pertains to a ventilated lighting device 100 for a motor vehicle. The lighting device 100 comprises a light source 110 positioned in a space created by a housing 102 and a lens 108. The housing 102 is connected to a fixation part 106 through a flexible leg 104. The fixation part 106 comprises a vent passage 128 connecting a fixation part central passage 130 to the outside atmosphere. Further, a flexible leg central passage 132, the fixation part central passage 130 and the vent passage 128, forms a continuous pathway. Thus, the inside space of lighting device 100 is in communication with the outside atmosphere. Moreover, the outlet opening 128b of the vent passage 128 is covered by an air-permeable membrane 126 such that the air from inside space can flow to outside, thus preventing the increase in air pressure during operation of the light device 100.