Rear Lamp Housing Segmentation for Measurement Unit Cooling
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Solution Overview
Problem
The temperature rise within a sealed housing containing a measurement unit, such as a millimeter wave radar, leads to deteriorated performance due to high outside air temperatures, particularly in vehicles.
Innovation Solution
A vehicle lamp design with a partitioned housing that separates lamp units and a measurement unit into distinct regions, incorporating an opening to allow outside air to cool the measurement unit while maintaining the lamp units in a sealed state, using a partition part and an opening in the support part to facilitate airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is sealed to protect the measurement unit, then waterproofing is improved, but temperature control deteriorates
Solution Approach 1:
The housing interior is divided into a sealed first region containing lamp units and an open second region containing the measurement unit. This segmentation allows different regions to have different sealing characteristics, enabling waterproofing of the lamp units while allowing air circulation for cooling the measurement unit.
Solution Approach 2:
Different regions of the housing are given different sealing properties. The first region is sealed for waterproofing, while the second region has an opening for thermal management. This local differentiation resolves the contradiction between waterproofing and temperature control by applying appropriate sealing characteristics to specific locations.
2Reliability
If the housing is sealed to protect the lamp units, then waterproofing is improved, but measurement performance deteriorates
Solution Approach 1:
The housing is segmented into two distinct regions with different sealing characteristics. The measurement unit is placed in the open second region where it can be cooled by air circulation, maintaining its measurement performance, while the lamp units are confined to the sealed first region for waterproofing.
Solution Approach 2:
The housing provides different local environments: a sealed environment for lamp units requiring waterproofing and an open environment for the measurement unit requiring thermal management. This local quality differentiation ensures both waterproofing and measurement performance are maintained.
3Reliability
If the housing is sealed to prevent water ingress, then protection is improved, but heat dissipation deteriorates
Solution Approach 1:
The housing interior is segmented into a sealed first region and an open second region. This allows the measurement unit in the open region to dissipate heat through air circulation while the sealed first region protects lamp units from water ingress.
Solution Approach 2:
Different regions have different protection characteristics: the first region is sealed for water protection, while the second region is open for heat dissipation. This local quality approach simultaneously achieves both protection and heat dissipation by applying appropriate characteristics to specific locations.
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 suppresses temperature rise in the measurement unit, maintaining its performance by cooling it with external air, thereby preventing deterioration and ensuring accurate operation.
Implementation Method 1
an opening part provided with an opening that communicates between the second region and the outside of the housing
Data Source
AI summary
A rear lamp includes a housing, a partition part that is provided within the housing and divides the housing into a first region and a second region, a plurality of lamp units provided in the first region, and a measurement unit provided in the second region. The housing includes an opening part provided with an opening that communicates between the second region and the outside of the housing.