Vehicle Lamp Ventilation Apparatus Moisture Control
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Solution Overview
Problem
Moisture formation on the light transmitting lens of vehicle lamp modules reduces optical efficiency and causes irregular light distribution, as existing hydrophilic coatings are insufficient in preventing water accumulation and associated light pattern distortions.
Innovation Solution
A ventilation apparatus for vehicle lamp modules, featuring an intake hole and exhaust hole configuration, an exhaust pipe connected to an exhaust pump, and a filter system, which actively removes moisture by creating a flow path between the lamp housing and the light transmitting lens, controlled by humidity and temperature sensors to maintain optimal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hydrophilic coating is applied to the light transmitting lens, then moisture formation is reduced to some extent, but water tracks still form causing light pattern distortion
Solution Approach 1:
The invention extracts water from the lamp housing interior by introducing an exhaust pump and exhaust hole structure. The exhaust pump actively removes water that accumulates inside the lamp housing, preventing water tracks from forming on the light transmitting lens and maintaining proper light pattern distribution.
Solution Approach 2:
The invention uses pneumatic principles by introducing an exhaust pump to create negative pressure inside the lamp housing. This pneumatic system actively draws water vapor and liquid water out of the lamp housing through the exhaust hole, preventing moisture accumulation and water track formation on the lens.
2Object-affected harmful factors
If ventilation holes are added to the lamp housing, then moisture is removed effectively, but device complexity increases
Solution Approach 1:
The invention merges the exhaust hole structure with the existing lamp housing design, integrating the ventilation function into the housing itself rather than adding separate complex ventilation components. The exhaust hole is strategically positioned to work with the exhaust pump for effective moisture removal.
Solution Approach 2:
The exhaust pump is positioned to utilize the lamp housing's own structure and space for moisture removal. The system uses the existing lamp housing geometry to facilitate water drainage and vapor escape, reducing the need for additional complex ventilation components.
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
Effectively prevents moisture formation on the light transmitting lens, ensuring consistent light distribution and optical efficiency by actively ventilating and drying the area between the lamp housing and the lens, thereby improving the lamp's performance in wet conditions.
Implementation Method 1
an exhaust pump connected to the exhaust pipe and forcibly discharging the air between the lamp housing and the light transmitting lens through the exhaust pipe
Implementation Method 2
When the light transmitting lens is covered with hydrophilic coating, the amount of moisture forming on the light transmitting lens may be reduced to some extent
Data Source
AI summary
A ventilation apparatus of a lamp module for vehicles may include a lamp housing, a lamp installed in the lamp housing and emitting light through a light transmitting part, a light transmitting lens covering an opening of the lamp housing and transmitting the light emitted from the light transmitting part, an intake hole part formed through the lamp housing and arranged at one side of the lamp, an exhaust hole part formed through the lamp housing and arranged at the other side of the lamp, an exhaust pipe coupled to the lamp housing and connected to the exhaust hole part, and an exhaust pump connected to the exhaust pipe and forcibly discharging the air between the lamp housing and the light transmitting lens through the exhaust pipe.