Light Bar Heat Dissipation via Perpendicular Conductive Ends
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Solution Overview
Problem
Conventional liquid crystal display technologies suffer from a low heat-dissipation effect due to the inability of light bars to effectively dissipate heat along their length direction, limiting the thermal management of light-emitting structures.
Innovation Solution
A light-emitting device with a frame and a protruded fixing bar, where heat-conductive portions are mounted perpendicularly on the ends of the fixing bar and attached to the light bar, allowing for heat dissipation along both the length direction and perpendicular to the light-emitting surface, enhancing thermal management by utilizing a two-dimensional heat-dissipation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat is dissipated only via the longer side of the light bar attached to the fixing bar, then the structure is simple, but the heat-dissipation effect is poor
Solution Approach 1:
The patent transitions from one-dimensional heat dissipation (only through the longer side) to two-dimensional heat dissipation by adding heat-conductive portions at both ends of the light bar that extend perpendicular to the light-emitting surface, enabling heat to dissipate in multiple directions simultaneously
Solution Approach 2:
The heat dissipation function is segmented into multiple independent pathways: heat dissipation through the longer side to the fixing bar, and heat dissipation through the heat-conductive portions at both ends, allowing each segment to contribute independently to overall heat management
2Temperature
If heat-dissipation channels are added along the length direction of the light bar, then the heat-dissipation effect is improved, but the device complexity increases
Solution Approach 1:
The heat-conductive portions serve multiple functions: they provide heat dissipation pathways, extends the thermal conduction network beyond the fixing bar attachment point, and can be integrated with existing light bar structures without requiring separate cooling systems
Solution Approach 2:
The heat-conductive portions are integrated with the light bar structure itself, merging the heat dissipation function into the existing structural components rather than adding entirely separate cooling mechanisms
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 addresses the low heat-dissipation issue by enabling heat to be dissipated in two-dimensional space, significantly improving the thermal management of light-emitting structures and ensuring efficient heat transfer from light-emitting diodes to the frame and backboard.
Implementation Method 1
Heat generated by light-emitting diodes 111 on the light bar 11 is dissipated along a direction perpendicular to a light-emitting surface 112 thereof into the air, or into a main body of the light bar 11 and then conducted to the fixing bar 121 via the longer side of the light bar 11
Data Source
AI summary
The present invention discloses a light-emitting device of a liquid crystal display apparatus, which includes a light bar and a frame. The frame has a surface having a fixing bar protruded therefrom. An extension direction of the fixing bar is parallel with the surface of the frame. A longer side of a main body of the light bar is attached to the fixing bar. Two ends of the fixing bar respectively have a heat-conductive portion mounted thereon. An inner surface of the heat-conductive portion is perpendicular to a length direction of the main body of the light bar and attached to a shorter side of the main body of the light bar. The present invention further discloses a liquid crystal display apparatus.