Commercial Vehicle Lighting Display Device Bulkhead Positioning
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Solution Overview
Problem
Commercial vehicle lighting devices often remain unintentionally activated after loading or unloading, leading to battery drain and potential impairment of light-sensitive loads, due to forgetfulness by drivers.
Innovation Solution
A commercial vehicle body design with a display device positioned near the bulkhead, within a specific distance from the end wall, to visually indicate the activated or deactivated state of the lighting device, enhancing visibility through LED light sources and integrated housing for the switching and display devices, ensuring easy accessibility and reducing equipment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lighting device is installed to illuminate the loading space, then loading and unloading operations are simplified, but the lighting device frequently remains unintentionally activated causing battery drain
Solution Approach 1:
The patent implements a visual feedback mechanism through a display device that shows the activation state of the lighting device. This feedback is positioned within the driver's field of view (at most 45 cm from the bulkhead edge) and includes at least one light source that is visible in the rear-view mirror, allowing the driver to monitor and correctly deactivate the lighting device, thereby preventing unnecessary energy consumption.
Solution Approach 2:
The patent introduces an intermediary display device that mediates between the lighting device and the driver. This intermediary component translates the electrical state of the lighting device into a visual signal that the driver can easily perceive, serving as a communication bridge that prevents the forgetting problem without requiring direct interaction with the lighting device itself.
2Ease of operation
If the display device is positioned far from the bulkhead, then installation space is available, but visibility and accessibility for the driver are reduced
Solution Approach 1:
The patent applies local quality by positioning the display device with specific spatial characteristics - within 45 cm from the bulkhead edge and within 100 cm from the lower edge of the end wall. This localized positioning creates an optimal zone that simultaneously ensures driver visibility, accessibility, and adequate installation space, rather than using a uniform positioning approach throughout the vehicle body.
3Ease of manufacture
If standard lighting equipment is used, then installation is simple, but light-sensitive loads may be impaired by premature battery emptying
Solution Approach 1:
The patent implements preliminary action by providing visual feedback about the lighting device state before the driver completes the loading/unloading operation and departs. The display device ensures the driver is aware of the lighting state in advance, allowing corrective action (deactivation) to be taken before battery depletion occurs, thereby preventing harm to light-sensitive loads without requiring complex post-operation monitoring systems.
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
The design significantly reduces the likelihood of forgetting to deactivate the lighting device, conserves battery life, and protects against moisture ingress, while maintaining visibility and usability, even in poor conditions.
Implementation Method 1
it is particularly useful if the at least one lamp is provided for emitting light at least essentially forwards in relation to the commercial vehicle body
Data Source
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AI summary
Described and illustrated is a commercial vehicle body (1,31), in particular a box body, with a front wall (3,40), with a loading space (8) limited to the front by the front wall (3,40), with a lighting device (10) for illuminating the loading space (8), with a switching device (14,32) for activating and deactivating the lighting device (10) and with a display device (15,33) that optically and in a distinguishable manner indicates the activated and deactivated state of the lighting device (10). In order to prevent the lighting device from remaining unintentionally activated less frequently, without incurring disproportionate equipment costs, it is provided that the display device (15,33) is arranged on the front (12) of the front wall (3,40) with respect to the commercial vehicle body (1) and is spaced at most 45 cm, preferably at most 30 cm, in particular at most 25 cm, from a lateral edge (18,41) of the front wall (3,40).