Boom-Mounted Work Vehicle Lighting to Prevent Glare Reflection
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Solution Overview
Problem
Conventional work vehicles with mounted front loaders experience light reflection from the boom and connecting frame, obstructing the view of the work area and the periphery of the work tool when the boom is raised.
Innovation Solution
A work vehicle equipped with a vehicle body, a vertically swingable boom, a work tool mounted on the boom, a first illumination lamp in the vehicle body, a second illumination lamp in the boom, and an illumination control unit that automatically turns off or dims the first illumination lamp when the second illumination lamp is turned on, especially when the boom is raised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the first illumination lamp is used to illuminate the work area, then the work area can be lit up, but light reflects off the boom and blocks the driver's view
Solution Approach 1:
The patent extracts the illumination function from a single light source and distributes it to two separate illumination lamps positioned at different locations. The first illumination lamp is mounted on the vehicle body to illuminate the work area, while the second illumination lamp is mounted on the boom to illuminate the boom structure itself, preventing reflection of the first lamp's light off the boom into the driver's line of sight.
Solution Approach 2:
The second illumination lamp acts as an intermediary solution that addresses the root cause of the reflection problem by illuminating the boom structure directly. This eliminates the need for the first illumination lamp's light to bounce off the boom, as the boom is already lit by the second lamp from an appropriate angle.
2Object-affected harmful factors
If the second illumination lamp is added to illuminate the boom, then light reflection is prevented, but the device complexity increases
Solution Approach 1:
The illumination system is segmented into two independent illumination lamps with distinct functions. The first illumination lamp handles work area illumination while the second illumination lamp handles boom illumination. This segmentation allows each lamp to be optimized for its specific purpose and enables independent control through the illumination control unit.
Solution Approach 2:
The illumination control unit dynamically changes the operational parameters of the two illumination lamps based on boom position. When the boom is raised to a predetermined position or higher, the control unit turns off or dims the first illumination lamp and turns on the second illumination lamp. This parameter change optimizes the illumination configuration for different working conditions.
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 configuration prevents light reflection from the boom, ensuring clear visibility of the work area and the periphery of the work tool, even when the boom is raised.
Implementation Method 1
a first illumination lamp that is disposed in the vehicle body and emits an illumination light forward; a second illumination lamp that is disposed in the boom and emits an illumination light toward the work tool
Data Source
AI summary
A work vehicle includes: a vehicle body that travels; a boom attached to the vehicle body to be vertically swingable; a work tool mounted to a front portion of the boom; a first illumination lamp that is disposed in the vehicle body and emits an illumination light forward; a second illumination lamp that is disposed in the boom and emits an illumination light toward the work tool; and an illumination controller that controls the first illumination lamp and the second illumination lamp, the illumination controller executing a lighting restriction of automatically turning off or dimming the first illumination lamp while the second illumination lamp is turned on.