LED Lighting Device Heat Dissipation Using Dual Heat Pipe Modules
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Solution Overview
Problem
Conventional LED streetlamps face reduced service life due to heat generation, and existing heat dissipating solutions require additional electricity consumption and are prone to outdoor damage.
Innovation Solution
The LED lighting device employs two heat dissipating modules, each comprising a heat-conducting plate and heat pipes, where one module transfers heat to dissipaters and the other concurrently transfers heat to the top cover, utilizing the high thermal conductivity of heat pipes to dissipate heat uniformly and rapidly without additional electricity consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipating fan is used to blow heated air, then heat dissipation efficiency is improved, but electricity consumption increases and device reliability deteriorates due to outdoor damage
Solution Approach 1:
The patent extracts and eliminates the heat dissipating fan from the system, replacing active mechanical cooling with passive heat pipe-based thermal conduction. The heat pipes transfer heat from LED modules to the lamp base and cover without requiring external power, thereby removing the electricity consumption issue while maintaining effective heat dissipation
Solution Approach 2:
The heat pipes perform self-service heat transfer without external control or power input. The phase change mechanism within heat pipes automatically draws heat from LED modules and conducts it to dissipation structures, creating a self-regulating thermal management system that eliminates dependency on powered fans
2Temperature
If a heat dissipating fan is installed outdoors, then heat dissipation is enhanced, but device reliability deteriorates due to easy damage
Solution Approach 1:
The vulnerable fan component is completely removed from the outdoor environment. The patent replaces it with inherently robust heat pipes and passive heat dissipation structures that have no moving parts, eliminating the reliability issues associated with outdoor fan installation and maintenance
Solution Approach 2:
The patent substitutes the mechanical fan system with a phase-change-based thermal conduction system. Heat pipes use vaporization and condensation cycles to transfer heat without mechanical moving parts, replacing the fragile mechanical fan with a durable passive thermal management system suitable for outdoor conditions
3Device complexity
If heat is dissipated only through heat dissipating fins, then heat dissipation structure is simple, but heat dissipation uniformity deteriorates
Solution Approach 1:
The patent segments the heat dissipation function across multiple pathways: heat pipes conduct heat to both the lamp base and lamp cover, creating distributed heat dissipation zones. This segmentation allows heat to be uniformly distributed across multiple surfaces rather than concentrated in a single fin structure, improving thermal uniformity while maintaining structural simplicity
Solution Approach 2:
The lamp base and lamp cover serve dual functions: structural support and heat dissipation surfaces. By making these components thermally active through heat pipe integration, the patent creates multi-functional elements that simultaneously provide mechanical support and uniform heat dissipation, eliminating the need for separate complex dissipation structures
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 solution effectively extends the service life of LED streetlamps by efficient heat dissipation without the need for additional power-consuming fans, enhancing both economic and practical utility while protecting the environment.
Implementation Method 1
An evaporator section of the first heat pipe is disposed on the first heat-conducting plate, in which the evaporator section of the first heat pipe is disposed. A condenser section of the first heat pipe is arranged on the first heat dissipater. The second heat-conducting plate paralleling to the first heat-conducting plate is connected with the LED lighting module. An evaporator section of the second heat pipe is disposed on the second heat-conducting plate, and whose condenser section is connected with an inner surface of the top cover
Implementation Method 2
one heat dissipating module transfers the heat to the dissipaters by a heat-conducting plate and heat pipes, and the other heat dissipating module concurrently transfers the heat to the top cover
Data Source
AI summary
An LED lighting device with a heat dissipating structure is disclosed. The lighting device includes a lamp base coupled with a top cover to form an accommodating space for accommodating a first heat dissipating module and a second heat dissipating module. The first heat dissipating module includes a first heat-conducting plate, a first heat pipe and a first heat dissipater. An LED lighting module is connected with the first heat-conducting plate, in which an evaporator section of the first heat pipe is disposed thereon. The first heat dissipater is arranged on a condenser section of the first heat pipe, and the second heat dissipating module includes a second heat-conducting plate and a second heat pipe. The second heat-conducting plate paralleling to the first heat-conducting plate is connected with the LED lighting module. An evaporator section of the second heat pipe is disposed on the second heat-conducting plate, and whose condenser section is connected with an inner surface of the top cover. Whereby, the heat generated from the LED lighting module can be dissipated uniformly and rapidly.