Lighting Device Elastic Frame for Thermal Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lighting devices face inefficiencies in heat radiation due to low dimensional accuracy of engaged portions and protrusions, leading to insufficient contact between the heat radiation member and the light source unit, resulting in reduced luminous efficiency and increased temperature.
Innovation Solution
A lighting device configuration featuring a first frame with a light source unit, a second frame holding a lens, and a third frame connected via an elastic deformation part, allowing for relative displacement and adjustment to ensure stable contact between the light source unit and the heat radiation member, even with low positioning accuracy, while maintaining the relative arrangement of the light source unit and lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If engaged portions and protrusions are used for assembly, then the lighting unit can be assembled in the apparatus body, but dimensional accuracy issues cause insufficient contact between the heat radiation member and light source unit
Solution Approach 1:
The patent introduces a movable adjustment mechanism that allows the light source unit to be dynamically repositioned relative to the heat radiation member. This mechanism enables the system to adapt to dimensional variations in the engaged portions and protrusions, ensuring stable contact between the light source unit and heat radiation member even when manufacturing precision is low.
Solution Approach 2:
The adjustment mechanism is designed to be self-adjusting, where the light source unit automatically positions itself to achieve optimal contact with the heat radiation member during assembly. This self-service feature compensates for dimensional inaccuracies without requiring external intervention or complex adjustment procedures.
2Stability of the object's composition
If the light source unit and heat radiation member are rigidly fixed, then structural stability is improved, but contact stability deteriorates when positioning accuracy is low
Solution Approach 1:
The patent replaces rigid fixed connections with a dynamic adjustment mechanism that allows the light source unit to move and adapt its position. This dynamic system maintains structural stability while enabling contact optimization, resolving the contradiction between rigid fixation and contact reliability under positioning inaccuracies.
Solution Approach 2:
The adjustment mechanism changes the positional parameters of the light source unit relative to the heat radiation member. By allowing controlled movement and adjustment of position parameters, the system achieves stable contact despite variations in the dimensional parameters of the engaged portions and protrusions.
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 configuration ensures efficient heat transfer, suppresses temperature rise, and improves luminous efficiency of the light source unit without affecting light distribution, particularly beneficial for light-emitting diodes.
Implementation Method 1
the third frame and the main frame are connected to each other via an elastic deformation part to be displaceable relatively in a front-rear direction at a connecting position
Implementation Method 2
the heat radiation member 114 is in contact with a rear surface 103b of the substrate 103 of the light source unit 104, so that heat generated from the light emitting device 102 can be efficiently radiated
Data Source
AI summary
There is provided a lighting device includes a first frame, on which a light source unit is mounted, a second frame disposed at a front of the first frame and holding a lens, and a third frame disposed between the first frame and the second frame. The first frame and the second frame are fixed to each other to configure an integral main frame, and the third frame and the main frame are connected to each other via an elastic deformation part to be displaceable relatively in a front-rear direction at a connecting position.