Streetlight Thermal Management With Segmented Heat Sink Modules
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Solution Overview
Problem
Existing street lamps lack versatility in adapting to different illumination needs and efficiently managing heat generated by LEDs and photovoltaic panels, requiring substantial modifications for changes in power levels and heat dissipation.
Innovation Solution
A streetlight design featuring a cuboid housing with adjustable LED modules and heat sink modules, integrated movement and light sensors, and a photovoltaic panel with additional heat sink modules to manage heat, allowing for flexible power adjustments and efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LED modules with increased power are installed to meet higher illumination requirements, then illumination intensity is improved, but heat generation increases requiring more complex heat dissipation solutions
Solution Approach 1:
The heat sink system is segmented into multiple independent heat sink modules (first heat sink module, second heat sink module, third heat sink module) that can be selectively installed and removed. Each module corresponds to specific LED modules, allowing heat dissipation capacity to be adjusted in discrete units matching the illumination requirements.
Solution Approach 2:
The heat sink modules are designed with adjustable installation positions and can be dynamically added or removed based on the actual illumination needs and heat generation levels. The first heat sink module is installed at a first position, second at a second position, and third at a third position, allowing flexible configuration.
2Adaptability or versatility
If the street lamp design is modified to accommodate different power levels and heat dissipation requirements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The street lamp housing is designed with universal mounting structures that can accommodate different combinations of LED modules and heat sink modules. The housing includes multiple installation positions for heat sink modules, allowing the same basic structure to serve multiple illumination and heat dissipation configurations without requiring custom modifications.
Solution Approach 2:
The heat sink modules are designed to be nested within or attached to the housing structure in a compact arrangement. The modules can be installed at different positions (first position, second position, third position) within the available space, maximizing space utilization while maintaining structural simplicity.
3Use of energy by moving object
If photovoltaic panels are integrated to provide power, then energy autonomy is improved, but additional heat is generated requiring enhanced heat management
Solution Approach 1:
The photovoltaic panel is integrated with the housing structure, and its heat dissipation is combined with the overall heat sink system. The housing serves as a thermal management structure that accommodates both LED heat sink modules and photovoltaic panel heat dissipation, merging multiple heat management functions into a unified system.
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
Enables easy adaptation to varying illumination requirements and effective heat management, ensuring efficient operation with increased power or photovoltaic panel usage, while maintaining a versatile and cost-effective design for diverse installations.
Implementation Method 1
at least a first heat sink module is installed at a first position in the housing and is in heat conducting engagement with the at least one LED module
Implementation Method 2
a photovoltaic panel is integrated with the housing
Data Source
Figure 1~2
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Figure 5~7
AI summary
A streetlight comprises at least one lighting unit (1) which has a housing (2) equipped with a light source (3), a partially translucent bottom cover (4), a top cover (5), and a fixture (6). The light source (3) is composed of at least one LED module (7) which comprises the LEDs (8) and the controlling and supplying means mounted on a printed circuit board (9). The lighting unit (1) has a void pocket (10) bounded by front wall (11) and lateral walls (12) of the housing (2) and the top cover (5), wherein at least one heat sink module (13) is fixed with thermal connection to the housing. The number of the heat sink modules is adjusted to the number of the LED modules, preferably it is an integer proportional to aggregated power of the LED modules. The LED modules are arranged in a rectangular array (14), and then the number of the heat sink modules is adjusted, preferably proportional, to the area of the rectangular array. The lighting unit has a movement sensor (15) and/or an infrared sensor (16), and/or at least one light sensor (17). If a photovoltaic panel (23) is attached directly to the lighting unit, then the number of additional heat sink modules installed in the void pocket is an integer proportional to the heating power produced by the photovoltaic panel. The fixture of the streetlight has a means, preferably an actuator, to adjust the longitudinal tilt angle (α), and the transversal tilt angle (β). The streetlight may comprise two or more lighting units connected to common fixture (6Y, 6T).