Backlit Display Heat Sink Integration via Integral Rear Frame Hooks
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Solution Overview
Problem
Conventional display devices with heat sinks attached to a rear frame require numerous parts and complex assembly steps due to the use of nuts and bolts for positioning and fixing the heat dissipation members.
Innovation Solution
A display device design featuring a sheet metal rear frame with integrated positioning components and hooks that securely attach heat sinks without the need for additional parts, using contact components and warping suppressors to stabilize and prevent warping of the heat sinks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If nuts and bolts are used to fasten the heat sink to the rear frame, then the heat sink can be securely fixed, but the number of parts and assembly steps increases
Solution Approach 1:
The fixing component is integrated into the rear frame as an integral structure, combining the rear frame and fixing mechanism into a single piece. This eliminates the need for separate nuts and bolts, reducing the number of parts while maintaining the fixing strength through the unified structural design.
Solution Approach 2:
The rear frame's integral fixing component serves dual purposes: it provides structural support and simultaneously functions as the fastening mechanism. The hook-shaped structure automatically engages with the heat sink, eliminating the need for additional fastening parts and simplifying the assembly process.
2Reliability
If nuts and bolts are used to position and fix the heat sink, then secure attachment is achieved, but the assembly process becomes more complex
Solution Approach 1:
The positioning component and fixing component are merged into a single integral structure within the rear frame. This unified design performs both positioning and fixing functions simultaneously, reducing assembly steps while ensuring reliable attachment through the combined mechanical engagement.
Solution Approach 2:
The integral fixing component is designed with distinct functional zones: a positioning portion that guides heat sink placement and a hook-shaped fixing portion that secures it. This segmentation of functions within a unified structure enables simple assembly while maintaining high attachment reliability.
3Shape
If the heat sink is made of thin sheet metal, then the device profile is sleek, but warping occurs due to heat from light sources
Solution Approach 1:
The warping suppressor is strategically positioned at specific locations on the heat sink where warping is most likely to occur. This localized reinforcement maintains the overall thin profile while providing targeted structural support to prevent heat-induced deformation in critical areas.
Solution Approach 2:
The heat sink combines thin sheet metal for a sleek profile with strategically placed warping suppressors that act as reinforcing elements. This composite structure integrates the aesthetic benefits of thin metal with the structural stability provided by the suppressor components, resisting thermal warping effectively.
4Manufacturing precision
If multiple positioning components are added to stabilize the heat sink, then positioning accuracy improves, but the device complexity increases
Solution Approach 1:
Multiple positioning functions are merged into a single integral positioning component on the rear frame. This unified structure provides multiple contact points and guidance surfaces that stabilize the heat sink in precise positions without requiring separate positioning parts, maintaining manufacturing precision while reducing component count.
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 design reduces the number of parts and assembly steps, enhances the stability and positioning of heat sinks, and effectively suppresses warping caused by heat from light sources, while maintaining secure attachment to the rear frame.
Implementation Method 1
at least one heat sink extending along the first direction and to which the light source substrate is attached, the at least one heat sink being disposed on the rear frame and made of sheet metal and configured to dissipate heat from the light source
Implementation Method 2
a reflective sheet having a plurality of holes corresponding to the light sources, the reflective sheet being disposed between the at least one light source substrate and the diffusing lenses, being configured to reflect light from the light sources to the display component side
Data Source
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AI summary
A display device comprising: a display component (1); a rear frame (4) supporting the display component; a plurality of light sources (7) disposed on a rear side of the display device with respect to the display component, the light source being configured to irradiate the display component with light from the rear side; a plurality of diffusing lenses (9) covering the light sources, respectively; at least one light source substrate (8) to which the light sources are mounted; at least one heat dissipation member (6) to which the light source substrate is attached, the at least one heat dissipation member being disposed on the rear frame; and a reflective sheet (10) having a plurality of holes (10a) corresponding to the light sources, the reflective sheet being disposed between the at least one light source substrate and the diffusing lenses.