Vehicle Headlamp Moisture Removal via PTC Regeneration
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Solution Overview
Problem
Vehicle head lamps experience reduced light transmissivity and safety risks due to moisture accumulation, which existing methods like optimizing vent holes or using moisture absorbents fail to effectively address, especially in complex inner shapes and when absorbents deteriorate.
Innovation Solution
A head lamp system incorporating a moisture removing apparatus with a moisture absorbent, a heating device using a PTC element, and a ventilation device to dry and discharge moisture, ensuring continuous moisture absorption performance by reusing the absorbent and efficiently removing moisture through controlled air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a moisture absorbent is placed in the head lamp to remove moisture, then moisture removal effectiveness is improved, but the moisture absorbent deteriorates over time and loses its moisture absorbing function
Solution Approach 1:
The patent implements a heating device that periodically heats the moisture absorbent to evaporate absorbed moisture, and a ventilation device that exhausts the evaporated moisture. This allows the moisture absorbent to be recovered and reused multiple times, transforming a single-use consumable into a reusable component that maintains its moisture absorbing function over extended periods.
Solution Approach 2:
The system establishes a continuous moisture management cycle where the moisture absorbent continuously absorbs moisture during normal operation, then is periodically regenerated through heating and ventilation. This continuous cycle ensures uninterrupted moisture removal effectiveness while extending the operational lifespan of the absorbent material.
2Reliability
If vent holes are optimized for air flow to remove moisture, then moisture removal is improved, but the method is ineffective when the inner shape of the head lamp is complicated
Solution Approach 1:
The patent introduces a moisture absorbent as an intermediary substance that actively captures moisture through absorption, bypassing the need for complex air flow optimization. The absorbent material serves as a mediator that directly interacts with moisture molecules, making the moisture removal process independent of the head lamp's internal geometric complexity and ventilation hole configuration.
3Duration of action of stationary object
If the moisture absorbent is heated to remove absorbed moisture, then the absorbent is restored for reuse, but energy consumption increases
Solution Approach 1:
The heating device operates periodically rather than continuously, heating the moisture absorbent only when regeneration is needed. This periodic operation significantly reduces energy consumption compared to continuous heating, while still maintaining the absorbent's moisture absorbing capacity through regular regeneration cycles.
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 system effectively removes moisture from head lamps, restores the absorbent's performance, and prevents re-moisturization, maintaining smooth moisture absorption and enhancing safety by ensuring clear visibility during vehicle operation.
Implementation Method 1
a heating device mounted adjacent to the moisture absorbent and heating the moisture absorbent at the time of applying electric power thereto to remove the moisture absorbed by the moisture absorbent
Implementation Method 2
a moisture absorbent mounted adjacent to the air outlet in the lamp housing and absorbing moisture in the lamp housing
Implementation Method 3
a ventilation device having an inside space surrounding the moisture absorbent and the heating device, mounted to be connected to the air outlet, and allowing moisture discharged by the moisture absorbent dried by the heating device to be discharged through the air outlet
Data Source
AI summary
A head lamp for a vehicle including a moisture removing apparatus may include a moisture removing apparatus, moisture generated in the head lamp is removed by a moisture absorbent, wherein the moisture absorbent is dried, such that moisture absorbing performance of the moisture absorbent is restored, continuously maintaining a smooth moisture absorbing function. In addition, the moisture generated during drying the moisture absorbent is not again introduced into the head lamp, but is discharged to the outside, blocking the moisture from being generated in the head lamp.