Vehicle Head Lamp Circuit Placement in Lamp Unit Gap
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Solution Overview
Problem
Existing head lamp devices for vehicles face challenges in reducing size due to the limited space utilization of their lighting circuit units, which hinders the miniaturization of the device.
Innovation Solution
The head lamp device incorporates a lighting circuit unit that is strategically placed in the gap between the pair of lamp units, arranged perpendicular to the vehicle's forward and rearward direction, allowing for efficient space utilization and reducing the device's size by integrating the circuit within a sealed lamp case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lighting circuit unit is disposed outside the lamp case, then the structure of the head lamp device is simple, but the size of the head lamp device is large
Solution Approach 1:
The patent merges the lighting circuit unit with the lamp case by disposing the lighting circuit unit inside the lamp case. This integration reduces the overall size of the head lamp device while the lamp case's sealing structure continues to protect the lighting circuit unit, maintaining structural simplicity without requiring additional protective components.
Solution Approach 2:
The lighting circuit unit is nested within the lamp case, utilizing the internal space of the lamp case for circuit placement. This nesting approach minimizes the external dimensions of the head lamp device while keeping the sealing structure intact for protection.
2Reliability
If the lighting circuit unit has its own sealing structure, then the waterproof property is improved, but the manufacturing cost increases
Solution Approach 1:
The lamp case's sealing structure serves a dual function: it protects the lamp units from water ingress and simultaneously protects the lighting circuit unit disposed inside it. This eliminates the need for a separate sealing structure on the lighting circuit unit, reducing manufacturing cost while maintaining waterproof reliability.
Solution Approach 2:
The protective sealing function is merged from the lighting circuit unit to the lamp case. The lamp case's sealing structure now protects both the optical components and the electrical circuit, simplifying the overall structure and reducing manufacturing complexity while ensuring waterproof performance.
3Volume of moving object
If the lighting circuit unit is disposed in the gap between lamp units, then the space utilization is improved, but the dimension in forward and rearward direction is reduced
Solution Approach 1:
The lighting circuit unit is repositioned from a traditional lateral placement to a forward-rearward placement within the gap between lamp units. By utilizing the gap space in the forward-rearward dimension rather than expanding laterally, the patent achieves efficient space utilization while actually reducing the overall forward-rearward dimension of the head lamp device.
Solution Approach 2:
The patent utilizes the specific local space (gap) between the lamp units in the forward-rearward direction for circuit placement. This localized use of available space optimizes the overall compactness of the head lamp device without affecting other dimensional requirements.
Data Source
AI summary
A head lamp device of a vehicle comprises a pair of lamp units arranged in a direction perpendicular to a forward and rearward direction of a vehicle body, each of the pair of lamp units including at least one light emitting element; and a lighting circuit unit which is supplied with electric power from a power supply and lights the at least one light emitting element, wherein at least a portion of the lighting circuit unit is disposed in a gap formed between the pair of lamp units in the direction in which the pair of lamp units are arranged.