Motor-Driven Shading Blade Fixture for Precise Light Spot Shaping
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Solution Overview
Problem
Conventional manually adjustable light fixtures for shaping output light suffer from safety hazards, inaccuracy, and inefficiency due to manual operation, leading to significant deviations in light spot positioning and time-consuming adjustments.
Innovation Solution
A light fixture with motor-driven shaping of output light, utilizing a light-shaping module with shading blades, stepper motors, and a driving board to precisely control the position and shape of the light spot through a mechanism that includes linkage blocks and guide grooves for accurate movement and rotation of shading blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment of shading blades is used, then the light spot shape can be adjusted, but the positioning accuracy deteriorates due to the large size difference between blade adjustment dimension and actual light spot size
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an automated motor-driven system. Stepper motors are used to drive the shading blades through transmission mechanisms (reduction gears, linkages), eliminating manual operation while achieving precise positioning control. The motor control system can accurately position blades based on digital signals, resolving the contradiction between manual operation difficulty and positioning accuracy.
Solution Approach 2:
The patent introduces intermediary transmission mechanisms between the motor and shading blades, including reduction gears, linkages, and transmission columns. These intermediaries amplify the motor's small movements into precise blade positioning, bridging the gap between the motor's output dimension and the required blade adjustment precision.
2Productivity
If manual adjustment of shading blades is used, then the light spot shape can be adjusted, but the adjustment time increases due to time-consuming manual operation
Solution Approach 1:
The manual mechanical adjustment system is replaced with an automated motor-driven system. The stepper motors can rapidly position the shading blades to desired locations without manual intervention, dramatically increasing adjustment speed and reducing the time required to change light spot configurations.
Solution Approach 2:
The system allows pre-programming of light spot positions and shapes. The control board can store multiple preset configurations, and when a preset is selected, the motors automatically adjust the blades to the pre-calculated positions, eliminating the need for manual trial-and-adjustment processes.
3Reliability
If manual adjustment of shading blades is used, then the light spot shape can be adjusted, but safety hazards increase due to high altitude work requirements
Solution Approach 1:
The patent replaces manual mechanical adjustment with remote automated control. The motor-driven system can be controlled from ground level or remote locations, eliminating the need for personnel to work at high altitudes. The control board receives signals (potentially wireless) and automatically adjusts the shading blades, resolving the safety issue while maintaining operational capability.
Solution Approach 2:
The system is designed to adjust itself automatically based on control signals. The motors and control board work autonomously to position the shading blades without human physical intervention, making the system self-sufficient for the adjustment task and eliminating safety risks associated with manual high-altitude work.
4Measurement precision
If motor-driven adjustment is implemented, then positioning accuracy is improved, but device complexity increases due to additional motors and transmission mechanisms
Solution Approach 1:
The patent divides the adjustment system into modular segments: individual stepper motors for each shading blade, separate transmission mechanisms for each blade, and a control board that manages each motor independently. This segmentation allows precise control of each blade while maintaining modularity, making the complex system more manageable and potentially easier to maintain.
Solution Approach 2:
The control board serves multiple functions: it controls all stepper motors, processes control signals, stores preset configurations, and coordinates the movement of multiple shading blades simultaneously. This multi-functionality reduces the need for separate control components for each blade, balancing the added complexity of motorized control with centralized intelligence.
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
Enables precise and cost-effective control of light spot shape and position, enhancing illumination effects while reducing operational complexity and allowing remote control, thus improving safety and efficiency.
Implementation Method 1
driving motors and a driving board, wherein the blade holder is disposed between the plurality of shading blades and the driving motors
Implementation Method 2
the output end of the driving motor comprises a driving rod and a linkage block connected to the driving rod, the driving motor is connected to the corresponding shading blade by means of the linkage block
Implementation Method 3
a first guide groove is provided on the blade holder for the transmission column to move
Data Source
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AI summary
The present invention discloses a light fixture with motor-driven shaping of output light, comprising a lamp housing with a light outlet, and a light source assembly arranged in the lamp housing, and a light-shaping module arranged in the light source assembly along the output direction of the light for shaping the pattern or shape projected by the light fixture. The light-shaping module comprises shading blades, a blade holder, driving motors and a driving board, wherein the blade holder is set between the shading blades and the driving motors, and the shading blades are movably distributed on the blade holder and together form a shading opening. The output ends of the driving motors comprise a driving rod and a linkage block connected to the driving rod. Each driving motor is connected to an associated shading blade by means of the linkage block. The end face of the linkage block is provided with a transmission column extending toward the associated shading blade, and each shading blade is provided with a groove for the transmission column to pass through. A first guide groove is provided on the blade holder for guiding movement of the transmission column. The light fixture with motor-driven shaping of output light of the present invention controls the movement of each shading blade by means of the driving motors to precisely adjust their positions thereby precisely defining the shape of the shading opening. Precision of the shape, size and position of the light spot can be improved and the illuminating effect can be enhanced.