LED Lamp Thermal Management via Segmented Power Electronics
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Solution Overview
Problem
Conventional LED tubes for lighting are heavy, expensive, and have reduced service life due to heat generation, making them difficult to mount and requiring reinforcement of lamp housings, while existing solutions do not effectively address thermal management and weight distribution.
Innovation Solution
A lamp design featuring a circuit board carrier with LEDs on top and heat dissipation on the underside, along with external power electronics, allows for improved heat management and weight distribution, enabling a lighter, more efficient, and easily mountable LED lighting solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power electronics are integrated into the LED tube to enable replacement of fluorescent tubes, then the lamp can be used in conventional luminaires, but the LED tube becomes comparatively heavy and expensive
Solution Approach 1:
The invention divides the lighting system into two separate parts: the LED lamp (light source) and the power electronics (driver). The LED lamp contains only the essential lighting components (LEDs, circuit board, heat dissipation structure), while the power electronics are placed externally in the luminaire. This segmentation reduces the weight of the LED lamp while maintaining full functionality through the external power supply unit.
2Adaptability or versatility
If power electronics are integrated into the LED tube, then the lamp can be used in conventional luminaires, but the lamp becomes expensive
Solution Approach 1:
By separating the power electronics from the LED lamp, the invention allows for independent optimization of each component. The LED lamp can be manufactured as a simple, cost-effective light source module, while the power electronics can be produced separately using standard driver designs. This reduces overall system cost compared to integrating expensive power conversion circuitry into each lamp.
3Adaptability or versatility
If LEDs are arranged in a tubular body with integrated power electronics, then the lamp can replace fluorescent tubes, but heat generation reduces service life
Solution Approach 1:
The invention extracts the heat-generating power electronics from the LED lamp structure, eliminating the source of thermal stress on the LEDs and their circuitry. The LED lamp is designed with dedicated heat dissipation structures (heat sinks, thermal pathways) that can efficiently manage the relatively small heat generated by the LEDs themselves, while the external power electronics handle the heat-intensive conversion processes separately.
Solution Approach 2:
The invention transitions from a one-dimensional tubular LED arrangement to a two-dimensional or three-dimensional LED configuration on a circuit board within a cavity. This spatial reorganization allows for better heat distribution and dissipation surfaces, with LEDs arranged on a planar circuit board that can be thermally coupled to heat sinks, rather than confining them to a narrow tubular space.
4Ease of operation
If the holder is arranged on the outside of longitudinal ends of the lamp, then the lamp can be mounted in conventional luminaires, but the weight distribution is poor and mounting is difficult
Solution Approach 1:
Instead of placing the mounting holder at the conventional location (outside the longitudinal ends), the invention inverts the approach by integrating the holder directly into the circuit board carrier structure, positioning it centrally or at optimized locations along the lamp body. This allows for superior weight distribution and mechanical stability, as the holder becomes an integral part of the lamp's structural framework rather than an external attachment.
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
The design enhances the service life of LEDs and power electronics by effective heat dissipation, reduces weight, and simplifies mounting, resulting in a more efficient and cost-effective lighting system with adjustable light emission direction.
Implementation Method 1
the circuit board carrier with LEDs on top and heat dissipation on the underside
Data Source
AI summary
The lamp (1) has a board (18) that is equipped with LEDs (19). The top surface (21) of a board support (20) is designed as a rectilinear profile structure of board. A carrier-side fixing structure for fixing a lamp structure (3) is fixed on underside (22) of board support. An electrical connection element (11) is provided for electrical contacting to a power supply. A cover is designed as a linear profile structure, and is made transparent for passage of light rays of LEDs. The cover is attached on the top surface of the board support, such that a cavity is formed.