LED Illumination Module with Distal Electrical Contact
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Solution Overview
Problem
LEDs in medical instruments, such as endoscopes, face challenges with heat dissipation and secure electrical contacting, which can lead to tissue damage and compromised functionality.
Innovation Solution
An LED illumination module with a vertical construction featuring a first electrical connection contact on the proximal side and a second contact on the distal side, utilizing an electrically conductive sleeve for secure and efficient heat dissipation and contacting, allowing for direct heat transfer through a large-surfaced connection lead without intermediate components like circuit boards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an LED is used for illumination in medical instruments, then illumination intensity is improved, but heat dissipation becomes problematic leading to tissue damage risk
Solution Approach 1:
The LED is designed with a vertical construction where the second electrical connection contact is positioned on the distal side (radiation-emitting side) rather than on the same plane as the first contact. This spatial arrangement in the axial dimension allows the radiation-emitting surface to coincide with the second contact, enabling heat dissipation through the distal side without compromising illumination intensity.
Solution Approach 2:
The second electrical connection contact on the distal side serves dual functions: it provides electrical connection and simultaneously acts as a heat dissipation path. The connection lead connected to this contact conducts both electrical current and heat away from the LED, eliminating the need for separate heat dissipation structures and maintaining high illumination intensity.
2Device complexity
If a conventional LED with single-sided contact is used, then device complexity is reduced, but secure electrical contacting and heat dissipation are compromised
Solution Approach 1:
By positioning the second electrical connection contact on the distal side of the LED in the axial dimension, the invention enables direct connection to the radiation-emitting surface. This dimensional arrangement provides larger contact surfaces for both electrical contacting and heat dissipation without adding complex intermediate structures, thus maintaining simplicity while improving reliability.
3Ease of manufacture
If an intermediate circuit board is used for electrical connection, then ease of manufacture is improved, but heat dissipation efficiency is reduced
Solution Approach 1:
The invention extracts and eliminates the intermediate circuit board from the electrical connection path. By directly connecting the connection lead to the second electrical connection contact on the distal side of the LED, the design removes the heat-insulating intermediate layer, thereby improving heat dissipation efficiency while maintaining ease of manufacture through direct wiring.
4Object-affected harmful factors
If the second connection contact is positioned on the radiation-emitting side, then heat dissipation is improved, but ease of operation for contacting becomes difficult
Solution Approach 1:
The second electrical connection contact is positioned on the distal side of the LED in the axial dimension, coinciding with the radiation-emitting surface. This spatial arrangement allows heat dissipation through the distal side while the connection lead can access this contact from the distal direction, maintaining ease of operation during assembly and operation.
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 enables simple and secure electrical contacting while effectively managing heat dissipation, reducing the risk of tissue damage and improving the reliability of LED illumination in medical applications.
Implementation Method 1
The sleeve is electrically conductively connected to the second connection contact of the LED, in a manner distanced to the proximal end of this sleeve... This construction permits a good heat dissipation or removal
Implementation Method 2
at least one LED which on a proximal side comprises a first electrical connection contact and on a distal side which is directed axially opposite comprises a second electrical connection contact... an axially directed distal side of the LED, on which the second electrical connection contact is situated, comprises a radiation-emitting region
Data Source
AI summary
A LED illumination module has at least one LED (6). At a proximal side there is a first electric connection contact (8) and at an axially oppositely directed distal side there is a second electrical connection contact (10) as well as a radiation region emitting radiation. The LED (6), at the second electrical connection contact (10), is contacted via an electrically conductive sleeve (14) which, distanced to the proximal end, is electrically conductively connected to the second connection contact (10) of the LED (6).