Panel Light Assembly Thermal Expansion Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
LED panel light devices face reduced lifespan due to high working temperatures, as existing designs lack effective heat dissipation mechanisms, leading to potential damage from thermal expansion.
Innovation Solution
A panel light assembly featuring a deformable unit with dual elastic components and a heat dissipation structure that absorbs thermal expansion pressure, maintaining optimal distance between the light guide plate and LED modules while enhancing heat dissipation through a combination of elastic units and a heat dissipation structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If LED modules work for long time under high temperature, then light output is maintained, but lifespan is reduced
Solution Approach 1:
The patent converts the harmful thermal expansion force into a beneficial pre-compression effect. The light guide plate's thermal expansion pushes the rigid element, which in turn compresses the elastic element and presses the light strip against the light guide plate, creating a pre-compression state that maintains optimal spacing and improves heat dissipation, thereby extending lifespan while maintaining light output.
2Stability of the object's composition
If rigid structure is used to maintain constant distance, then positioning is stable, but thermal expansion stress cannot be absorbed
Solution Approach 1:
The patent introduces a deformable unit with elastic elements that can dynamically adjust to thermal expansion. The rigid element maintains positioning stability under normal conditions, but when thermal expansion occurs, the elastic element deforms to absorb the stress, allowing the system to adapt to temperature changes while maintaining optimal spacing between components.
Solution Approach 2:
The patent changes the mechanical properties of the spacing mechanism by introducing elastic deformation capability. The deformable unit allows the distance between the light strip and light guide plate to change dynamically in response to thermal expansion, transforming the system from a rigid fixed-distance structure to an adaptive structure that maintains optimal spacing under varying thermal conditions.
3Illumination intensity
If light guide plate is made larger for better light distribution, then optical performance improves, but thermal expansion damage risk increases
Solution Approach 1:
The patent applies beforehand cushioning by pre-installing the deformable unit with elastic elements between the light strip and light guide plate. This pre-compression mechanism absorbs thermal expansion stress before it can cause damage to the LED modules or light guide plate, allowing larger light guide plates to be used for better optical performance without increased risk of thermal damage.
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 protects LED modules from thermal expansion, improves optical efficiency, and extends the lifespan of the panel light by controlled elastic deformation and enhanced heat dissipation, ensuring consistent performance.
Implementation Method 1
When the light guide plate is thermally deformed, a deformation force generated by the light guide plate is applied to the rigid element so as to push the light strip to press against the elastic element.
Implementation Method 2
an elastic element is arranged between the light strip and the back plate and at a side of the light strip opposite to the light-entering surface of the light guide plate. When the light guide plate is thermally deformed, a deformation force generated by the light guide plate is applied to the rigid element so as to push the light strip to press against the elastic element.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A panel light assembly includes a light guide unit, a light source, a support base and a stop unit. The light source emits a light passing through the light guide unit via a light incidence side of the light guide unit. The stop unit keeps at least a first distance between the light incidence side of the light guide unit and the light source when the light guide unit has a thermal expansion so that the light incidence side of the light guide unit expands toward the light source.