Display Cover Dew Prevention via Thermal Interposition
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Solution Overview
Problem
Existing display apparatuses face challenges in maintaining a dry state within the space between the display panel and cover glass, leading to potential dew condensation issues due to air leaks or external moisture intrusion, which shortens the effectiveness of dew reduction.
Innovation Solution
Incorporating a first interposition member with elasticity and thermal conductance between the support and cover member, which facilitates heat transfer from the light source to the cover member, thereby reducing temperature differences and preventing dew condensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If air in the space is replaced with dry air having a low dew point temperature, then the occurrence of dew condensation on the inner surface of the cover glass is reduced, but dry air may leak from the space or outside air may intrude into the space due to aging, shortening the effective period
Solution Approach 1:
The invention changes the thermal parameter (temperature) of the cover glass inner surface by introducing a light source that heats the cover member, raising its temperature above the dew point of the air in the space, thereby preventing dew condensation without relying on dry air replacement
Solution Approach 2:
The invention replaces the mechanical/chemical approach of dry air replacement with a thermal approach using a light source and heat conduction member to actively heat the cover glass, substituting a passive atmospheric control system with an active thermal control system
2Object-affected harmful factors
If a light source and heat conduction member are introduced to heat the cover member, then temperature difference is reduced and dew condensation is suppressed, but device complexity and manufacturing cost increase
Solution Approach 1:
The cover member serves multiple functions: it acts as both the transparent cover of the display device and as a heat conduction path for the light source, eliminating the need for separate heating elements and reducing overall device complexity
Solution Approach 2:
The light source, which is already necessary for the display function, simultaneously serves to heat the cover member and prevent dew condensation, making the system self-sufficient without requiring additional dedicated heating 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
The solution effectively suppresses dew condensation on the cover member over a longer period without increasing manufacturing costs, as it eliminates the need for replacing air with dry air, and enhances the durability of the display apparatus by dissipating heat generated by the light source.
Implementation Method 1
The first interposition member has elasticity and thermal conductance
Data Source
AI summary
A display apparatus includes a display unit, a support, a cover member, and a first interposition member. The display unit displays an image. The support supports the display unit. The cover member is disposed with a gap between the cover member and the display unit and covers the display unit. The first interposition member is interposed between the support and the cover member, and is in contact with the support and the cover member. The first interposition member has elasticity and thermal conductance.