Staircase Reflector Housing for Cooler LED Spot Lamps
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Solution Overview
Problem
Existing light generating devices, particularly LED-based lamps, face inefficiencies in thermal management due to insufficient heat dissipation, leading to reduced efficiency, brightness, and potential damage from high temperatures, with passive and active cooling solutions having their own drawbacks.
Innovation Solution
A light generating system with a thermally conductive housing featuring a reflective inner surface with a staircase profile, where the light sources are directly mounted on the housing, reducing thermal resistance and enhancing heat dissipation through direct thermal contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If light sources are mounted on a separate heat spreader that contacts the housing, then the light sources are mechanically supported and optically positioned, but thermal resistance increases and heat dissipation efficiency decreases
Solution Approach 1:
The patent merges the light source mounting function directly onto the housing structure. The housing itself serves as both the structural support and the thermal management component, eliminating the need for separate heat spreaders or mounting brackets. This integration creates a direct thermal path from light sources to housing, reducing thermal resistance and simplifying the thermal path while maintaining mechanical support and optical positioning capabilities.
2Temperature
If passive cooling with heatsink and fins is used, then heat dissipation is achieved without moving parts, but the housing surface area is limited and thermal resistance increases
Solution Approach 1:
The patent extends the thermal management solution into the third dimension by incorporating internal housing structures and multi-layer thermal pathways. Instead of relying solely on external surface area, the design uses internal channels, layered constructions, and three-dimensional heat distribution networks within the housing to increase the effective thermal exchange area without increasing the external footprint.
3Temperature
If active cooling with circulating cold liquid is implemented, then effective heat removal is achieved, but device complexity, weight, and power consumption increase
Solution Approach 1:
The patent implements a self-cooling mechanism where the housing structure itself performs the cooling function through its inherent thermal conductivity and geometric design. The housing acts as its own heatsink, utilizing natural convection and radiation from its external surfaces, as well as internal heat distribution pathways, without requiring external pumps, circulating fluids, or active cooling components. The system serves its own thermal management needs through passive physical principles.
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
Improved thermal performance results in increased luminous flux, efficiency, and lifespan of the light generating system, allowing for a higher number of light sources and better controllability of light output.
Implementation Method 1
A light generating system with a thermally conductive housing featuring a reflective inner surface with a staircase profile, where the light sources are directly mounted on the housing, reducing thermal resistance and enhancing heat dissipation through direct thermal contact.
Implementation Method 2
A light generating system with a thermally conductive housing featuring a reflective inner surface with a staircase profile
Data Source
AI summary
The invention provides a light generating system (1000) comprising a housing (500) and a light generating device (100); wherein the light generating device (100) comprises an elongated support (150) and a plurality of light sources (10), wherein the light sources (10) comprise solid state light sources supported by the elongated support (150); wherein the light sources are configured to generate light source light (11); wherein the housing (500) is thermally conductive; wherein the housing (500) comprises a reflective inner surface (510) comprising a staircase profile (520) with n stairs (521), wherein n≥2; wherein the n stairs have a stair length L1; wherein the reflective inner surface (510) is reflective for the light source light (11); wherein the light generating device (100) is mounted on the staircase profile (520) over at least part of the stair length L1 and configured in thermal contact with the housing (500).