Front Turn Lamp Light Distribution for Better Driver Signal Awareness
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Solution Overview
Problem
Existing front turn lamps make it difficult for drivers to recognize when they are turned on, leading to the risk of forgetting to turn them off.
Innovation Solution
A front turn lamp configuration with separate front and side irradiation lamps that emit flashing lights with defined luminous intensity peaks, enhancing visibility and awareness of the turn signal activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional front turn lamps are used with standard light distribution, then the lamp structure is simple and meets basic regulatory requirements, but the driver cannot easily recognize when the turn lamp is activated
Solution Approach 1:
The front turn lamp is divided into multiple independent light-emitting regions with distinct functions: a first light-emitting region that emits light forward within the standard distribution range, and a second light-emitting region that emits light toward the side at a 45-degree angle. This segmentation allows each region to serve a specific purpose - the first region maintains regulatory compliance while the second region provides enhanced driver awareness through lateral illumination that is visually distinct.
Solution Approach 2:
Different portions of the light distribution are given different characteristics to serve different functions. The first light-emitting region provides light with standard distribution patterns for regulatory compliance, while the second light-emitting region provides light with specific angular distribution (45 degrees) and intensity characteristics designed specifically for driver awareness. This local differentiation of light quality enables simultaneous achievement of regulatory compliance and improved driver feedback.
2Reliability
If the turn lamp emits light only in the standard forward direction, then the light distribution meets regulatory standards, but the flashing light is not noticeable to the driver
Solution Approach 1:
The patent introduces a new spatial dimension to the light distribution by adding a second light-emitting region that directs light laterally at a 45-degree angle, in addition to the conventional forward-directed first light-emitting region. This dimensional expansion creates a multi-directional illumination pattern where the lateral light component provides immediate visual feedback to the driver during flashing operation, while the forward light component maintains regulatory compliance.
Solution Approach 2:
The turn lamp system utilizes periodic flashing action where both the first and second light-emitting regions emit light in a synchronized periodic manner. This periodic activation of multiple light regions creates a noticeable flashing pattern that provides clear temporal feedback to the driver, making the activation state immediately recognizable while maintaining the required forward light distribution for regulatory compliance.
Data Source
AI summary
A front turn lamp arranged adjacent to each of a pair of headlights or integrally arranged with the pair of headlights at the front of a vehicle, characterized in that, as a light distribution pattern on a virtual screen of the front turn lamp, within a front turn light distribution standard range, a light emitted by the front turn lamp has a first luminous intensity peak near the center where a horizontal line intersects with a vertical line, and a second luminous intensity peak at an angle position away from the front of the vehicle to the side thereof.