LED Lighting Device with Independent String Control
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Solution Overview
Problem
Existing LED light apparatuses struggle to optimize photometric distribution for various installation conditions and climatic changes without prior knowledge of geometric features, leading to inefficiencies and limitations in adapting to different scenarios, such as changing traffic volumes and weather conditions.
Innovation Solution
A LED light apparatus comprising a carrier element with multiple LED strings and groups of primitive optics, a power supply unit with independent outputs, and a control unit that modulates power to each string, allowing for dynamic adjustment of light intensity and photometric distribution based on user-defined parameters, enabling flexible adaptation to different conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single LED apparatus with fixed photometric distribution is used, then device complexity is reduced and ease of manufacture is improved, but adaptability to different installation conditions and climatic changes deteriorates
Solution Approach 1:
The LED apparatus is divided into multiple independently controllable LED strings, each capable of being adjusted individually. This segmentation allows the system to adapt to different installation conditions by selectively controlling which strings are active and at what intensity, resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The patent implements dynamic control of LED strings through a control unit that can independently adjust the intensity and activation of each LED string. This dynamic capability enables the apparatus to adapt to varying installation conditions, climatic changes, and traffic volumes without requiring multiple fixed-configuration devices, thereby improving adaptability while managing complexity through electronic control.
2Adaptability or versatility
If multiple LED strings with independent control are implemented, then adaptability to different scenarios is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent designs a universal LED apparatus structure where multiple LED strings share common mounting and control infrastructure. This multi-functional design allows the same apparatus to serve different installation scenarios (street lighting, area lighting, tunnel lighting) by simply reconfiguring which LED strings are active, improving adaptability while maintaining ease of manufacture through standardized components.
3Illumination intensity
If prior knowledge of geometric installation features is required, then photometric optimization for specific scenarios is improved, but logistics complexity and post-installation flexibility deteriorate
Solution Approach 1:
The control unit enables dynamic adjustment of LED string intensity and activation after installation, allowing photometric optimization for different scenarios without requiring prior knowledge of geometric features. This dynamic capability resolves the contradiction by providing post-installation flexibility while maintaining the ability to optimize illumination intensity as needed.
4Productivity
If generic photometric distribution is used, then ease of manufacture and device simplicity are improved, but lighting effectiveness and visual comfort deteriorate
Solution Approach 1:
The patent changes the operational parameters of individual LED strings (intensity, activation state) to optimize photometric distribution for different scenarios. This parameter-based control improves lighting effectiveness and visual comfort without requiring complex hardware modifications, resolving the contradiction between productivity and device complexity.
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 solution allows for optimal photometric distribution in any application or installation condition, enabling quick adjustments to sudden changes in weather or traffic, reducing the need for multiple models and simplifying logistics and maintenance, while ensuring safety and visual comfort standards are met.
Implementation Method 1
A plurality of strings 3 of LEDs 4, fixed to the carrier element 2
Implementation Method 2
a plurality of groups 5 of primitive optics 6, each associated with a respective LED 4, and each configured for concentrating and conveying the light emitted by the respective LED 4
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A LED light apparatus (1), comprising a carrier element (2), a plurality of strings (3; 3a-3e) of LEDs (4), fixed to the carrier element (2), a plurality of groups (5; 5a-5e) of primitive optics (6; 6a-6e), each associated with a respective LED (4), and each configured for concentrating and conveying the light emitted by the respective LED (4); a power supply unit (8), provided with a plurality of independent outputs (9), each connected to a respective string (3; 3a-3e) of LEDs (4), and a control unit (10) for the current that powers the single strings (3; 3a-3e) of LEDs (4), to which the power supply unit (8) is operatively connected. The control unit (10) is configured for powering each of the strings (3; 3a-3e) of LEDs (4), by means of the power supply unit (8), all simultaneously and in a differentiated manner for each string (3; 3a-3e), so as to modulate the absorbed power thereof, and so as to obtain an overall photometric distribution of the apparatus (1) that derives from the combination of the light intensities emitted by the strings (3; 3a-3e), each modulated in an autonomous manner; the control unit (10) is also configured for carrying out, by means of the power supply unit (8), a dimming of the current that powers the single channels of the strings (3; 3a-3e) of LEDs (4), with values comprised between 0 and 1.