Vehicular Headlamp Light Source Unit Replacement Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light projecting devices, such as vehicular headlamps, face difficulties in replacing semiconductor light emitting elements and laser elements due to the need for precise alignment adjustments, leading to decreased workability and maintenance challenges.
Innovation Solution
A light projecting device configuration that includes a light source unit with a laser element, converging lens, and light emitting section, which can be easily attached or detached from a fixed part, maintaining the relative positional relationship among components, allowing for straightforward replacement without alignment adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the laser element and light emitting section are replaced with new ones, then the light projecting device can maintain favorable function, but precise alignment adjustments are required which decrease workability
Solution Approach 1:
The patent combines the laser element, converging lens, and light emitting section into a single integrated light source unit. This merging allows the entire assembly to be replaced as one unit, eliminating the need for separate alignment adjustments of individual components while restoring the light projecting device's favorable function.
Solution Approach 2:
The light source unit is pre-assembled and pre-aligned during manufacturing before being installed in the light projecting device. This preliminary action ensures that when the unit is replaced, the components are already in their correct relative positions, eliminating the need for field alignment adjustments and improving replacement workability.
2Ease of manufacture
If the laser element and light emitting section are replaced separately, then component replacement is possible, but alignment adjustments of position and angle are required
Solution Approach 1:
The patent merges the laser element, converging lens, and light emitting section into a single replaceable unit. This approach maintains ease of manufacture by allowing complete replacement of the light source assembly, while simultaneously eliminating the need for precise alignment adjustments since the components are pre-aligned as an integrated unit.
3Reliability
If alignment adjustments are performed during replacement, then proper light projection is achieved, but the process becomes extremely difficult and time-consuming
Solution Approach 1:
The light source unit is pre-assembled and pre-aligned during manufacturing before installation. This preliminary action ensures that when the unit is replaced in the field, no alignment adjustments are needed, thereby maintaining proper light projection quality while dramatically reducing replacement time and eliminating the difficulty of field alignment.
Solution Approach 2:
By combining the laser element, converging lens, and light emitting section into a single integrated unit, the patent ensures that the pre-established alignment relationships are preserved during replacement. This merging eliminates the time-consuming alignment adjustment process while maintaining the reliability of light projection quality.
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 significantly improves the workability of replacing optical components, simplifying maintenance and restoring device functionality by enabling easy replacement of the light source unit with new components.
Implementation Method 1
a converging lens for converging the light emitted from the light source
Implementation Method 2
a light emitting section for emitting light upon receipt of the light converged by the light converging section
Data Source
AI summary
A light projecting device of the present invention includes: a light source unit including (i) a laser element for emitting light, (ii) a light converging lens for converging the light emitted from the laser element, and (iii) a light emitting section for emitting light upon receipt of the light converged by the light converging lens; and a reflector for projecting light emitted from the light source unit. The light source unit is provided so as to be attached to or detached from a fixed part to which the light source unit is to be fixed.