Sequential Winker Control for Vehicular Lamp Direction Indication
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Solution Overview
Problem
Conventional vehicular turn signal lamps using sequential blink control methods often result in a poor impression of direction indication due to the control conditions such as the speed of widening the lights-out area and repetition period, leading to a less effective visual cue for drivers.
Innovation Solution
A lighting control device and method for vehicular lamps that includes processor circuitry to manage a lighting cycle with phases of turning on and off multiple light-emitting parts, incorporating sequential dimming and luminance changes to enhance the impression of direction indication by creating a moving light effect, where the luminance ratio between on and dim states can be set to 1.15 or more, and the dimming can be gradual or stepwise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If sequential blink control is used to create movement of light effect, then the direction indication impression is improved, but the control conditions (speed of widening lights-out area and repetition period) may result in poor direction indication impression
Solution Approach 1:
The patent applies parameter changes by systematically varying control conditions including the speed of widening the lights-out area, the repetition period of lighting control, and the luminance ratio between light-emitting parts. These parameter adjustments optimize the sequential blink control to enhance the movement of light effect and improve direction indication impression.
Solution Approach 2:
The patent implements dynamics by making the lighting control adaptive and dynamic rather than static. The control system adjusts the sequencing timing, luminance levels, and lights-out area expansion speed in real-time to create an optimal movement effect, transforming the rigid sequential blink control into a dynamic visual display that enhances direction indication.
2Speed
If the lights-out area is widened quickly to create movement effect, then the direction indication becomes more apparent, but the control precision and visual quality deteriorate
Solution Approach 1:
The patent uses dynamics to create a balanced widening speed that is neither too fast nor too slow. The control system dynamically adjusts the timing and sequencing to achieve an optimal visual effect, where the lights-out area expands at a controlled rate that maintains both apparent movement and high visual quality.
Solution Approach 2:
The patent optimizes the parameter of lights-out area expansion speed to find the optimal balance point. By carefully controlling this parameter along with other related parameters such as luminance ratio and timing, the system achieves both apparent movement effect and high visual quality without deterioration.
3Loss of time
If the repetition period of lighting control is shortened to enhance direction indication, then the responsiveness is improved, but the visual perception quality deteriorates
Solution Approach 1:
The patent optimizes the periodic action of the turn signal by carefully selecting the repetition period. The lighting control operates in periodic cycles with optimized timing that provides rapid response while maintaining sufficient duration for clear visual perception. The periodic sequencing of light-emitting parts is synchronized to achieve both fast response and high visual quality.
Solution Approach 2:
The patent adjusts the repetition period parameter to find the optimal value that balances response time and visual perception quality. By coordinating this parameter with other timing parameters in the sequential blink control, the system achieves improved responsiveness without sacrificing visual perception clarity.
Data Source
AI summary
A lighting control device is capable of further enhancing the impression of direction indication due to the movement of light when performing sequential winker control. The lighting control device performs lighting control of a vehicular lamp including a plurality of light-emitting parts, and includes processor circuitry configured to perform controls to repeat a lighting cycle including turning on the plurality of light-emitting parts that have been turned off and maintaining a lighting state of all the light emitting parts, then sequentially dimming at least two or more of the light-emitting parts in a predetermined direction with a time difference, and thereafter turning off the plurality of light-emitting parts and maintaining a lights-out state of all the light-emitting parts.