LED Lamp Heatsink with Multi-Directional Light Distribution
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Solution Overview
Problem
Conventional LED lamps face challenges in replicating the light distribution characteristics of incandescent lamps, with limited ability to radiate light sideways and backwards, and inefficient heat dissipation, leading to reduced performance and reliability due to heat generation.
Innovation Solution
The LED lamp design features LEDs mounted on both upper and side portions of a heatsink, with a modified reflecting surface to increase the orientation angle and a heat dissipation structure that includes heat sinks and pads to efficiently dissipate heat, allowing for light emission in multiple directions and improved heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LEDs are mounted only on the upper portion of the lamp, then the structure is simple, but the light distribution characteristics cannot match incandescent lamps (cannot radiate light sideways and backwards)
Solution Approach 1:
The patent applies dimensionality change by transitioning from a single-plane (upper portion only) LED mounting arrangement to a multi-dimensional configuration where LEDs are mounted on both the upper and side portions of the lamp body. This spatial expansion enables light to be radiated in multiple directions (forwards, sideways, and backwards), replicating the omnidirectional light distribution characteristics of incandescent lamps while maintaining a relatively simple structural implementation.
2Power
If high current is provided to achieve high-powered light emission, then light power increases, but heat generation increases
Solution Approach 1:
The patent applies the 'blessing in disguise' principle by converting the harmful effect of heat generation into a beneficial heat dissipation mechanism. The patent design incorporates a heat dissipation structure that utilizes the natural convection of air and thermal radiation to efficiently transfer and dissipate the heat generated by high-current LED operation. This allows the system to maintain high light power output while effectively managing the inevitable heat production, preventing overheating and maintaining LED reliability.
3Reliability
If heat is not effectively dissipated, then LED operation efficiency decreases and color distortion occurs, but adding heat dissipation structures increases device complexity
Solution Approach 1:
The patent applies the universality principle by designing a heat dissipation structure that serves multiple functions simultaneously. The same structural elements that provide mechanical support and housing for the LEDs also function as heat dissipation components through integrated heat sinks and convection channels. This multi-functional design effectively dissipates heat to maintain LED operation stability and prevent color distortion without significantly increasing overall device complexity, as the heat dissipation features are incorporated into existing structural elements rather than adding separate dedicated components.
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 achieves light distribution characteristics similar to incandescent lamps by radiating light forwards, sideways, and backwards, while effectively dissipating heat, enhancing the performance and reliability of the LED lamp.
Implementation Method 1
a heatsink for dissipating heat generated from the first and second light sources to an outside
Implementation Method 2
the heatsink comprises a first mounting area on which the first substrate is mounted and an inclined surface on which the second substrate is mounted
Implementation Method 3
a reflecting surface is provided through modification of a partial shape of the heatsink. The reflecting surface is disposed at a side of the heatsink to reflect light that is radiated sideways and backwards
Implementation Method 4
at least one first light source mounted on a first substrate; at least one second light source mounted on a second substrate
Data Source
AI summary
The present invention relates to an LED lamp. In the LED lamp, light may be emitted in lateral and rear directions as well as in a front direction to obtain light distribution characteristics similar to those of an incandescent lamp, and heat generated when the LED emits light may be effectively dissipated.


