Electromagnetic Wave Transmission Cover Thermal Insulation
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Solution Overview
Problem
Existing electromagnetic wave transmission covers with integrated heating elements suffer from inefficiencies in heating the design portion due to heat being conducted to the housing, leading to increased time and power consumption in melting frost or snow, which impairs the sensing and communication functions of vehicular electromagnetic wave devices.
Innovation Solution
The electromagnetic wave transmission cover incorporates a design portion with a heating element and a housing where the thermal conductivity of the housing is lower than the design portion, or includes an intermediate member with lower thermal conductivity than the housing, to hinder heat conduction from the design portion to the housing, thereby efficiently warming the design portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heating element is provided integrally with the design portion to warm the design portion, then the frost or snow covering the design portion can be melted, but the housing absorbs heat through thermal conduction, increasing the time and power consumption required for heating
Solution Approach 1:
A heat insulating member is introduced as an intermediary component between the design portion and the housing. This insulating member has lower thermal conductivity than both the design portion and the housing, thereby reducing heat loss to the housing while maintaining effective heating of the design portion to melt frost and snow.
Solution Approach 2:
The thermal conductivity parameter of the housing is made lower than that of the design portion, or a heat insulating member with lower thermal conductivity is interposed between them. This parameter change reduces the rate of heat conduction from the design portion to the housing, thereby reducing energy loss and improving heating efficiency.
2Productivity
If the housing is made of a material with high thermal conductivity, then heat can be efficiently distributed, but the heating element must consume more power to compensate for heat loss to the housing
Solution Approach 1:
A heat insulating member with lower thermal conductivity than both the design portion and the housing is interposed between them. This intermediary reduces the thermal coupling between the design portion and the housing, thereby reducing the power consumption of the heating element while maintaining adequate heating efficiency for melting frost and snow.
Solution Approach 2:
The thermal conductivity parameter of the housing is reduced to be lower than that of the design portion, or a heat insulating member with lower thermal conductivity is introduced. This parameter change reduces heat loss to the housing, thereby reducing the power consumption of the heating element while maintaining heating efficiency.
3Reliability
If the heating element is activated to melt frost or snow, then the sensing and communication functions of the vehicular electromagnetic wave device are restored, but the time required for heating increases due to heat conduction to the housing
Solution Approach 1:
A heat insulating member is interposed between the design portion and the housing to reduce heat loss. This intermediary allows the heating element to reach the required temperature faster by preventing heat dissipation to the housing, thereby reducing the time required to melt frost and snow and restore the sensing function.
Solution Approach 2:
The thermal conductivity parameter of the housing is made lower than that of the design portion, or a heat insulating member with lower thermal conductivity is introduced. This parameter change reduces the rate of heat conduction to the housing, thereby reducing the heating time required to restore the sensing and communication functions.
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
This solution allows for faster and more efficient heating of the design portion, reducing power consumption and ensuring the functionality of vehicular electromagnetic wave devices by minimizing heat loss and maintaining the design portion's temperature effectively.
Implementation Method 1
a heater wire 8 provided on the surface of the cover base material 5 and generating heat by energization
Implementation Method 2
the housing is lower in thermal conductivity than the design portion
Data Source
AI summary
An electromagnetic wave transmission cover includes: a design portion disposed on a front side of a vehicular electromagnetic wave device and exposed to an outside of a passenger compartment of a vehicle; a housing integrated with the design portion and disposed on a back side of the design portion; and a heating element provided integrally with the design portion. The housing is lower in thermal conductivity than the design portion.