LED Reflector Lamp Thermal and Optical Design
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Solution Overview
Problem
Current LED lamps suffer from ineffective thermal dissipation and light condensation, leading to high temperatures, short lifespan, and glare issues due to fixed projection angles and lack of light concentration, limiting their application and efficiency.
Innovation Solution
The LED reflector lamp design incorporates a control circuit, heat-conducting plates, a reflective cup with parabolic surfaces, and a heat sink to enhance thermal dissipation and light condensation, allowing adjustable projection angles and improved luminous flux through efficient heat management and light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple LED light sources are mounted on the same horizontal plane to increase illuminance and power, then the luminous output is improved, but the thermal dissipation becomes ineffective and the lamp housing temperature becomes excessively high
Solution Approach 1:
The patent divides the housing into multiple heat dissipation channels by creating heat dissipation holes and internal heat dissipation structures. This segments the thermal management system, allowing heat from multiple LED sources to be distributed and dissipated through different pathways, preventing heat accumulation in a single location.
Solution Approach 2:
The patent introduces heat dissipation holes as intermediary structures that facilitate thermal transfer from the internal LED mounting area to the external environment. These holes act as thermal conduits, allowing heat to escape through convection and radiation without requiring direct contact with the housing exterior.
2Illumination intensity
If LED light sources are arranged to project luminous flux directly onto the working surface to meet illuminance requirements, then the illumination coverage is improved, but glare and dazzle are generated that harm people's eyes
Solution Approach 1:
The patent applies different optical characteristics to different regions of the housing interior. The heat dissipation holes are strategically positioned and sized to create specific light distribution patterns, allowing certain areas to redirect light away from direct viewing angles while maintaining illumination coverage on the working surface.
Solution Approach 2:
Instead of allowing light to project directly outward, the patent uses the housing structure and heat dissipation holes to redirect light paths. The light is inverted from a direct projection pattern to a reflected and redistributed pattern, reducing glare while maintaining illumination effectiveness.
3Ease of manufacture
If the lamp housing is designed without specialized light-condensing elements to simplify structure, then the manufacturing is easier, but light condensation is ineffective resulting in light loss and low light availability
Solution Approach 1:
The patent makes the housing structure serve multiple functions: it provides mechanical support, enables thermal dissipation through heat dissipation holes, and performs optical condensation by redirecting light paths. The same structural elements used for heat management also contribute to light control, eliminating the need for separate condensing components.
Solution Approach 2:
The housing structure itself performs the light condensation function that would otherwise require additional dedicated components. The internal geometry and heat dissipation hole arrangement create self-organizing light reflection and redirection patterns, allowing the structure to serve its own optical management needs without external assistance.
4Power
If LED light sources are arranged horizontally on the same plane to increase power output, then the luminous flux is increased, but the lamp size becomes large if higher power is achieved
Solution Approach 1:
The patent transitions from a two-dimensional horizontal arrangement of LEDs to a three-dimensional vertical configuration utilizing the housing depth. By stacking LED modules vertically and using heat dissipation holes for thermal and optical management, the design achieves higher power output within a more compact volumetric footprint.
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 increases luminous flux by 5-20% and extends the lifespan of LED lamps by effective thermal dissipation and light concentration, reducing glare and enabling more compact, high-power LED solutions with adjustable angles for various applications.
Implementation Method 1
at least one heat-conducting plate on which the at least two light source panels are secured in a thermally conductive manner
Implementation Method 2
a reflective cup having a reflective inner surface, a reflective opening formed by an edge of the reflective inner surface
Implementation Method 3
a heat sink having a cavity in its interior, the cavity being dimensioned and shaped to be coupled to at least a part of the reflective cup and the heat-conducting plate
Data Source
Figure 1
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AI summary
A LED reflector lamp, comprises a control circuit, characterized in that the LED reflector further comprises at least two LED light sources (60) which are controlled by the control circuit; at least two light source panels (20) on which the at least two LED light sources (60) are secured, respectively; at least one heat-conducting plate (10) on which the at least two light source panels (20) are secured in a thermally conductive manner; a reflective cup (30) having a reflective inner surface, a reflective opening formed by an edge of the reflective inner surface, and a slot formed on a bottom of the reflective cup (30), wherein the heat-conducting plate (10) with the LED light sources (60) and the light source panels (20) are inserted through the slot into an interior of the reflective cup (30) such that the LED light sources (60) are parallel to a centrally vertical axis of the reflective cup (30); and a heat sink (50) having a cavity in its interior, the cavity being dimensioned and shaped to be coupled to at least a part of the reflective cup (30) and the heat-conducting plate (10).