Forklift LED Warning Beacon With Directional Lighting Sectors
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Solution Overview
Problem
Existing rotating beacons on industrial trucks emit unnecessary light reflections in unintended directions, causing disturbance to people not in immediate danger and are inefficient in signaling specific operating states, especially in areas with multiple trucks.
Innovation Solution
The rotating beacon features selectively controlled LED luminous bodies that activate a situation-dependent number of lighting sectors based on the truck's direction of travel and operating states, reducing light intensity and frequency in non-relevant areas and using color changes to indicate hazards or malfunctions, with integration of sensors and communication interfaces for real-time data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rotating beacon with 360 degree rotating mirror and central discharge lamp is used, then light reflections are generated in all directions to warn people, but unnecessary light disturbances occur in areas outside the direction of movement causing disturbance to people not in immediate danger
Solution Approach 1:
The beacon is divided into multiple independently controllable LED lighting sectors (e.g., front, rear, left, right sectors) instead of a single 360-degree rotating mirror. Each sector can be selectively activated based on the truck's movement direction, so only sectors relevant to the current operation emit light. This segmentation eliminates unnecessary light disturbances in areas where no movement occurs while maintaining effective warning signals in relevant directions.
Solution Approach 2:
Different lighting sectors have different activation characteristics based on their spatial orientation and the truck's operational state. The lighting system provides localized warning coverage matched to the actual movement pattern, rather than uniform 360-degree illumination. This ensures that light is emitted only where potentially endangered people are present, reducing harmful light disturbance while preserving warning reliability.
2Object-affected harmful factors
If LED luminous bodies are controlled to emit light in all directions simultaneously, then warning signals are visible to all surrounding people, but energy consumption increases and light disturbances occur in non-relevant areas
Solution Approach 1:
The LED array is segmented into multiple lighting sectors that can be independently controlled. Based on the truck's movement direction and operational state, only the relevant sectors are activated while others remain off. This selective activation significantly reduces energy consumption compared to illuminating all sectors simultaneously, while still providing adequate warning to people in the actual movement path.
Solution Approach 2:
Instead of activating all LED luminous bodies in all lighting sectors simultaneously, the system activates only the partial set of LEDs in sectors relevant to the current movement direction. This partial action approach reduces energy consumption and eliminates light disturbances in non-relevant areas while maintaining sufficient warning effectiveness for potentially endangered people.
3Illumination intensity
If the rotating beacon uses a centrally located high-current discharge lamp, then bright light is emitted to attract attention, but light reflections occur in all directions causing disturbance to people not in immediate danger
Solution Approach 1:
The single central discharge lamp is replaced by multiple LED luminous bodies arranged in separate lighting sectors. Each sector can be independently activated at appropriate brightness levels based on the truck's movement direction. This provides sufficient illumination intensity in relevant directions while eliminating unnecessary light reflections in areas where the truck is not moving, thus reducing disturbance to people not in immediate danger.
4Adaptability or versatility
If LED luminous bodies are activated in all lighting sectors, then comprehensive warning coverage is provided, but the system cannot effectively signal specific operating states and movement directions
Solution Approach 1:
The lighting system is segmented into multiple independently controllable sectors, each capable of being activated based on specific operational conditions. This allows the system to convey directional information about the truck's movement (e.g., moving forward activates front sectors, moving backward activates rear sectors) and different operating states, providing adaptability while preserving information about the truck's current state through selective sector activation patterns.
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 effectively reduces light disturbances in non-relevant areas while providing clear, situation-specific visual warnings of the truck's movement and operating states, enhancing safety by targeting light emissions only where necessary and improving visibility in low-light conditions.
Implementation Method 1
The rotating beacon features selectively controlled LED luminous bodies that activate a situation-dependent number of lighting sectors
Data Source
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AI summary
The invention relates to a forklift truck (1) with a rotating beacon (4). To improve the function of the rotating beacon (4), it is proposed that the rotating beacon (4) be designed as an LED warning flasher with a plurality of stationary lighting sectors (5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h) arranged around a circumference of the beacon, wherein LED light sources (8) arranged in the lighting sectors (5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h) can be selectively controlled depending on the driving and/or working and/or operating conditions of the forklift truck (1), and a situation-dependent number of lighting sectors (5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h) are activated by emitting light.