LED Lamp Heat Transfer Unit for Weight-Constrained Aircraft Guidance
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Solution Overview
Problem
The challenge is to develop a lamp that uses an LED module for aircraft landing guidance without increasing weight, while effectively dissipating heat, as traditional heat dissipation methods like fins are not feasible due to weight constraints.
Innovation Solution
The lamp design incorporates an LED module with a heat transfer unit that includes a heat conductive section and a heat dissipation section, allowing heat to be dissipated into the casing without the need for additional weight-increasing components like fans, using a heat pipe and heat spreader for efficient heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation fin is provided in the LED lamp to promote heat dissipation, then heat dissipation performance is improved, but weight increases
Solution Approach 1:
The patent merges the heat dissipation function with the existing lamp structure by utilizing the lamp housing as a heat dissipation component. The heat dissipation plate is integrated into the lamp housing, eliminating the need for separate heat dissipation fins and avoiding additional weight while maintaining effective heat dissipation.
Solution Approach 2:
The lamp housing serves multiple functions: it provides structural support, houses the LED module, and acts as a heat dissipation component through the integrated heat dissipation plate. This multi-functionality eliminates the need for dedicated heat dissipation structures that would increase weight.
2Volume of moving object
If the LED module is disposed close to the casing for compact design, then device size is reduced, but heat dissipation becomes less effective
Solution Approach 1:
The patent introduces a heat transfer unit as an intermediary component between the LED module and the lamp housing. This heat transfer unit efficiently conducts heat from the LED module to the heat dissipation plate integrated in the housing, enabling effective heat dissipation even when the LED module is positioned close to the housing for compact design.
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 enables effective heat dissipation of the LED module without increasing the lamp's weight, ensuring reliable operation over its useful life and maintaining the required specifications for aircraft landing guidance systems.
Implementation Method 1
The heat transfer unit is disposed such that heat of the LED module can be dissipated into the casing
Implementation Method 2
using a heat pipe and heat spreader for efficient heat management
Implementation Method 3
using a heat pipe and heat spreader for efficient heat management
Data Source
AI summary
The present invention provides a lamp capable of preventing an increase in weight and dissipating heat of the LED module. The lamp of the present invention includes an LED module serving as a light source, a heat transfer unit, a light distribution unit, a casing including an opening, and a light transmissive cover. The LED module includes plural LEDs and an LED substrate having an LED-mounting surface on which the plural LEDs are mounted. The light distribution unit is disposed on a light emitting side of the LED module. The LED module and the light distribution unit are disposed in the casing. The light transmissive cover is disposed over the opening of the casing. The LED module is disposed in the casing to be distanced from the casing. The heat transfer unit is disposed such that heat of the LED module can be dissipated into the casing.