Sidelight Backlight Module Heat Dissipation and Light Reflection
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Solution Overview
Problem
Conventional sidelight-type backlight modules require a lamp reflector for light reflection and often face heat dissipation issues when using light-emitting diodes as a light source, which compromises their lifespan.
Innovation Solution
A sidelight-type backlight module design that eliminates the need for a lamp reflector by using a reflector plate extension and a reflector component with a light-reflecting face to direct light into a light-guiding plate, while incorporating heat-dissipating blocks made of metallic materials to conduct heat away from light-emitting diodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a lamp reflector is used to secure and reflect light from the light source, then light reflection efficiency is improved, but device complexity increases and heat dissipation becomes problematic
Solution Approach 1:
The patent combines the light reflection function and light source securing function into the side frame strip structure. The side frame strip serves as both the mounting structure for the light-emitting unit and the reflector, eliminating the need for a separate lamp reflector component. This merging reduces device complexity while maintaining light reflection efficiency.
Solution Approach 2:
The side frame strip is designed to perform multiple functions: it provides structural support, secures the light-emitting unit, and reflects light toward the light-guiding plate. By making the side frame strip multi-functional, the patent eliminates the need for dedicated lamp reflector components, thereby reducing overall device complexity.
2Use of energy by moving object
If light-emitting diodes are used as the light source, then energy efficiency is improved, but heat dissipation problems arise that compromise lifespan
Solution Approach 1:
The patent introduces a heat-dissipating block as an intermediary between the light-emitting diodes and the outer frame. This heat-dissipating block serves as a thermal conductor that transfers heat away from the light-emitting diodes to the outer frame, which then dissipates the heat to the environment. This intermediary structure enables effective heat management, protecting the light-emitting diodes from thermal damage and extending their lifespan.
3Illumination intensity
If a lamp reflector is used for light reflection, then light directionality is improved, but the number of components increases
Solution Approach 1:
The patent merges the reflector function with the side frame strip structure. The side frame strip is designed with reflective properties and positioning that enable it to direct light toward the light-guiding plate without requiring a separate lamp reflector component. This reduces the total number of components while maintaining effective light directionality.
Solution Approach 2:
The side frame strip is designed to perform multiple functions including structural support, light source mounting, and light reflection/direction. By making the side frame strip multi-functional, the patent eliminates the need for dedicated light direction components, thereby reducing the quantity of components while maintaining illumination effectiveness.
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 effectively reflects light without a lamp reflector and enhances heat dissipation, prolonging the lifespan of light-emitting diodes by ensuring efficient heat conduction and dissipation.
Implementation Method 1
Through the above-mentioned arrangement of the extension part of the reflector plate and the light-reflecting face of the reflector component on two opposite sides of the light-emitting diode members, light emitted by the light-emitting diode members can be reflected into the light-guiding plate
Implementation Method 2
The heat-dissipating block is disposed between and is in contact with the flexible circuit board and the outer frame. The outer frame is preferably made of a metallic heat-conductive material such that heat generated by the light-emitting diode members is conducted via the heat-dissipating block toward the outer frame for dissipation
Data Source
AI summary
A sidelight-type backlight module includes a casing body, a light-guiding plate, a reflector plate, a light-emitting unit, and a reflector component. The reflector plate is disposed at a surface of the light-guiding plate, and has an extension part extending beyond a side edge of the light-guiding plate that faces toward the light-emitting unit. The reflector component has a light-reflecting face spaced apart from the reflector plate. The light-emitting unit is disposed between the extension part and the light-reflecting face. The extension part and the light-reflecting face reflect light of the light-emitting unit into the light-guiding plate so that a lamp reflector can be omitted. Preferably, the reflector component is formed integrally with the casing body.