LED Lamp Polygonal Pillar Radius Ratio for Stage Lighting
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Solution Overview
Problem
Conventional LED lamps fail to meet the brightness and evenness in luminance requirements for stage lighting applications without requiring a change in the optical system, leading to reluctance in replacing halogen lamps due to cost and component replacement issues.
Innovation Solution
An LED lamp with a polygonal cross-sectional pillar and a specific pillar radius ratio, combined with a reflective bowl-shaped reflector and a lens, is designed to maintain compatibility with existing halogen lamp optical systems, ensuring equivalent brightness and evenness in luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If halogen lamp is replaced with LED lamp, then energy consumption is reduced and life is extended, but brightness and evenness in luminance on irradiation surface deteriorate
Solution Approach 1:
The patent applies local quality by strategically positioning multiple LEDs at different locations on the pillar surface rather than using a single light source. Each LED contributes to the overall illumination, creating localized light emission zones that collectively achieve uniform brightness distribution on the irradiation surface, thereby maintaining high illumination intensity while using energy-efficient LEDs.
Solution Approach 2:
The patent segments the light source into multiple individual LEDs distributed across the pillar surface instead of using one centralized halogen lamp. This segmentation allows each LED to be positioned optimally for light distribution, and the combined effect of multiple segmented light sources achieves the required brightness and evenness while reducing overall power consumption compared to the single high-power halogen source.
2Use of energy by moving object
If halogen lamp is replaced with LED lamp, then energy consumption is reduced and life is extended, but evenness in luminance on irradiation surface deteriorates
Solution Approach 1:
The patent applies local quality by strategically positioning multiple LEDs at different locations on the pillar surface rather than using a single light source. Each LED contributes to the overall illumination, creating localized light emission zones that collectively achieve uniform brightness distribution on the irradiation surface, thereby maintaining high illumination intensity while using energy-efficient LEDs.
Solution Approach 2:
The patent segments the light source into multiple individual LEDs distributed across the pillar surface instead of using one centralized halogen lamp. This segmentation allows each LED to be positioned optimally for light distribution, and the combined effect of multiple segmented light sources achieves the required brightness and evenness while reducing overall power consumption compared to the single high-power halogen source.
3Illumination intensity
If optical system is changed to be suitable for LED lamp, then brightness and evenness in luminance are improved, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by designing the pillar structure to serve multiple functions simultaneously: it provides mechanical support for mounting LEDs, acts as a heat dissipation component, and functions as an optical element that directs light distribution. This multi-functionality eliminates the need for separate optical components like reflectors and lenses, thereby maintaining improved brightness and evenness while reducing device complexity and cost.
Solution Approach 2:
The patent merges the structural support function, thermal management function, and optical direction function into a single integrated pillar component. By combining these functions that would traditionally require separate components (mounting structure, heat sink, reflector, lens), the invention achieves the desired illumination performance while simplifying the overall device structure and reducing component count.
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 solution allows for the use of LED lamps in stage lighting without altering the optical system, achieving comparable brightness and evenness in luminance to halogen lamps, thus reducing costs and facilitating adoption.
Implementation Method 1
The reflector includes a reflective surface on an inner side thereof so as to reflect rays of light emitted from the LED lamp
Implementation Method 2
a lens refracting the rays of light from the reflector toward an irradiation surface
Data Source
AI summary
An LED lamp includes a plurality of LEDs and a pillar that is defined by a polygonal cross-sectional shape and includes a plurality of lateral surfaces on which the plurality of LEDs are disposed. A pillar radius ratio is set to fall in a range of greater than or equal to 3.73% and less than or equal to 18.25%. The pillar radius ratio is defined as a dimensional ratio of a pillar radius to a radius of an opening of a reflector made in shape of a bowl. The pillar radius is defined as a distance from a center point of the pillar to each of the plurality of lateral surfaces.