Solid-State Luminaires Replacing Gas Discharge Lamps
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Solution Overview
Problem
Conventional gas discharge lamps are inefficient and have shorter lifespans compared to solid-state lighting, requiring multiple sources for suitable illumination and generating excessive heat, while also needing igniter circuitry and having lower color quality.
Innovation Solution
Design of solid-state luminaires with a form factor and light output similar to gas discharge lamps, utilizing a housing, lens, circuit board, and heat sink to provide energy-efficient, long-lasting illumination with improved color quality, eliminating the need for igniter circuitry and reducing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If gas discharge lamps are used for illumination, then they can provide sufficient light output, but they generate excessive heat and have shorter lifespans
Solution Approach 1:
The patent replaces the gas discharge illumination mechanism with solid-state LED light sources. This substitution eliminates the arc discharge process that generates excessive heat in conventional lamps, while the solid-state nature of LEDs provides higher durability and extended operational lifespan without the thermal degradation issues of gas discharge systems.
Solution Approach 2:
The patent changes the fundamental operating parameters of the illumination system by transitioning from gas discharge to solid-state electroluminescence. This parameter change results in significantly reduced operating temperatures, extended service life, and improved reliability while maintaining adequate light output for the application.
2Ease of manufacture
If gas discharge lamps are used, then they can provide illumination, but they require igniter circuitry and have lower color quality
Solution Approach 1:
The patent eliminates the igniter circuitry requirement by replacing gas discharge lamps with solid-state LEDs that can be directly driven by standard electrical circuits. The LED's electroluminescent特性 allows for straightforward electrical connection without the complex ignition and stabilization circuits needed for gas discharge systems.
Solution Approach 2:
The patent improves color quality by changing from gas discharge illumination to solid-state LED illumination. LEDs provide superior color rendering with higher Color Rendering Index (CRI) values, delivering more accurate and natural color representation compared to the color output of conventional gas discharge lamps.
3Illumination intensity
If multiple solid-state light sources are used to achieve suitable illumination, then the illumination level can be sufficient, but the device complexity increases
Solution Approach 1:
The patent divides the illumination function into multiple solid-state light sources arranged in a specific configuration. This segmentation allows the system to achieve adequate illumination levels while maintaining the advantages of solid-state technology, and the modular arrangement can be optimized to reduce overall complexity through efficient spatial distribution of light sources.
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 solid-state luminaires offer significant energy savings, extended life, and enhanced color quality, maintaining consistent illumination patterns similar to gas discharge lamps with reduced heat and no need for igniter circuitry.
Implementation Method 1
solid-state lighting refers to a type of lighting that emits light from a solid-state material, such as a block of semiconductor material
Implementation Method 2
a heat sink physically coupled to the circuit board to dissipate heat generated by the solid-state light emitters
Implementation Method 3
a fan received within the distal housing to move air through the solid-state lighting device during use
Implementation Method 4
a lens coupled to the housing; a plurality of solid-state light emitters carried by the circuit board and arranged to generate light to pass through the lens
Data Source
Figure 1~3
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AI summary
A solid-state lighting device for use in lieu of a gas discharge lamp, includes a housing; a lens coupled to the housing; a circuit board; and a plurality of solid-state light emitters carried by the circuit board and arranged to generate light to pass through the lens. An entirety of a form factor of the solid-state lighting device may be located within a cylindrical envelope having a length less than or about equal to an overall length of the gas discharge lamp and a diameter less than or about equal to the overall diameter of the gas discharge lamp. In addition, a light center length of the solid-state lighting device may be about equal to the light center length of the gas discharge lamp. Solid-state light emitters are arrayed with principal axes of emission radially spaced at least partially around and extending from a central axis of the lens.