Vehicle Lamp Light Guide Position Fixing Mechanism
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Solution Overview
Problem
Vehicle lamps with light guides face issues of movement due to vibration or external shocks, leading to increased complexity and cost in fixing their position without separate components.
Innovation Solution
A lamp design that uses a position fixing unit with first and second contact portions to secure the light source unit within the lamp assembly, eliminating the need for additional components by integrating the fixing mechanism into existing lamp components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a separate structure for fixing the position of the light guide is added, then the light guide position stability is improved, but the device complexity and cost increase
Solution Approach 1:
The patent merges the light guide fixing function with existing lamp components (bezel, reflector, or lamp housing) by forming contact portions directly on these components. This integration eliminates the need for separate fixing structures, thereby maintaining light guide position stability while avoiding increased device complexity and cost.
2Stability of the object's composition
If a separate structure for fixing the position of the light guide is added, then the light guide position stability is improved, but the manufacturing cost increases
Solution Approach 1:
The fixing function is combined with existing lamp components that are already part of the manufacturing process. The contact portions are formed on components like the bezel, reflector, or lamp housing during their normal manufacturing, eliminating the need for additional parts and assembly steps, thus maintaining position stability while reducing manufacturing cost.
Solution Approach 2:
Existing lamp components are given an additional function - serving as both their original purpose (e.g., reflector for light reflection, bezel for structural support) and as the light guide fixing structure through formed contact portions. This multi-functionality reduces the total number of components and lowers manufacturing cost.
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 design effectively prevents light guide movement while simplifying the configuration and reducing costs by using existing lamp components to fix the light source unit's position, ensuring stable illumination and image formation.
Implementation Method 1
a light guide unit which emits light incident from the light source to form an image having a predetermined shape
Implementation Method 2
a first contact portion that contacts at least a portion of a lower surface of the light guide unit
Implementation Method 3
a second contact portion that contacts at least a portion of an upper surface of the light guide unit
Data Source
AI summary
A lamp for vehicle includes a light source unit including a light source and a light guide unit which emits light incident from the light source to form an image having a predetermined shape; a lamp assembly including a lamp housing and a lens unit coupled to the lamp housing to form a space for accommodating the light source unit and a plurality of lamp components; and a position fixing unit formed on one side in the lamp assembly to fix a position of the light source unit. The position fixing unit comprises a first contact portion that contacts at least a portion of a lower surface of the light guide unit; and a second contact portion that contacts at least a portion of an upper surface of the light guide unit.