LED Lamp Lateral Outline for Passive Heat Dissipation
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Solution Overview
Problem
High-power LED lamps face significant challenges with heat dissipation, leading to reduced lighting efficiency and shortened lifespan due to ineffective management of waste heat.
Innovation Solution
The LED lamp design incorporates a heat sink with fins and a base, featuring a unique outline that follows a specific mathematical formula, along with dedicated heat dissipating channels and a thermally insulated sleeve to enhance air convection and radiation-based heat dissipation, ensuring efficient transfer of heat away from the LED chips and power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat sink is added to dissipate heat from high-power LED lamps, then heat dissipation efficiency is improved, but device complexity increases
Solution Approach 1:
The heat sink is integrated with the lamp shell structure, merging the heat dissipation function with the structural housing. The lamp shell itself serves as part of the heat dissipation pathway, eliminating the need for separate complex heat dissipation components while maintaining effective heat transfer from the LED chips.
Solution Approach 2:
The lamp shell performs multiple functions simultaneously: it provides structural support, houses the LED components, and acts as a heat dissipation pathway. This multi-functionality reduces overall device complexity while achieving effective heat management through the lateral outline design that facilitates natural convection.
2Temperature
If active cooling elements are used to enhance heat dissipation, then heat dissipation efficiency is improved, but device complexity and energy consumption increase
Solution Approach 1:
The heat sink utilizes natural convection currents generated by the temperature difference between the hot LED components and the surrounding air. The lateral outline design with specific curvature parameters enhances this natural convection flow, allowing the system to self-regulate heat dissipation without external power input or active cooling mechanisms.
Solution Approach 2:
The patent replaces active mechanical cooling systems (such as fans or pumps) with a passive thermal convection system. The carefully designed lateral outline geometry naturally guides air flow patterns that maximize heat transfer from the LED chips through the lamp shell, substituting mechanical complexity with geometric optimization.
3Ease of manufacture
If the lamp shell structure is simplified, then ease of manufacture is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The lateral outline of the lamp shell is defined by specific mathematical parameters (a, b, c, K in the cubic equation) that optimize heat dissipation performance. By adjusting these parameters within specified ranges, the design achieves effective heat transfer while maintaining a relatively simple manufacturing process. The parameters control the curvature and surface area characteristics that enhance natural convection.
Solution Approach 2:
The lamp shell incorporates localized geometric features with specific curvature radii and surface characteristics in key heat dissipation zones. The lateral outline parameters create optimized surface areas and air flow pathways at critical locations where heat transfer is most needed, while the overall structure remains simple enough for ease of manufacture.
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 prolongs the lifespan of high-power LED lamps by maintaining lighting efficiency through enhanced heat dissipation, utilizing natural convection and radiation without active cooling elements, while maintaining a compact and lightweight structure.
Implementation Method 1
enhanced air convection and radiation-based heat dissipation
Implementation Method 2
enhanced air convection and radiation-based heat dissipation
Implementation Method 3
efficient transfer of heat away from the LED chips and power source
Data Source
AI summary
An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve, the lamp head connects to the lamp neck which connects to the sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source is disposed in the lamp shell; and a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; wherein a lateral outline of the LED lamp detours around an axis of the LED lamp 360 degrees to turn around to form an contour of the LED lamp, any point on the outline meets a formula as follows:y=−ax3+bx2−cx+K; where K is a constant, and range of the constant of K is 360˜450; range of value of a is 0.001˜0.01, range of value of b is 0.05˜0.3, and range of value of c is 5˜20.