Vehicular Lamp Light Guide Mounting Surface
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Solution Overview
Problem
Conventional vehicular lamps face challenges in maintaining a consistent appearance between lit and unlit states due to the complexity and size increase when using an auxiliary light source, which restricts the installation position's freedom.
Innovation Solution
A vehicular lamp design incorporating a main light source, a heat dissipation member with an opening, and a light guide member that directs auxiliary light from a separate source toward the mounting surface, allowing for enhanced installation flexibility without increasing size or complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the auxiliary light source is provided at a position different from the mounting surface side with respect to the heat dissipation member, then the degree of freedom in installation position is improved, but the configuration becomes more complicated and the size increases
Solution Approach 1:
The light guide member extends in the optical axis direction (depth dimension) of the heat dissipation member to reach from the auxiliary light source position to the mounting surface. This dimensional approach allows the auxiliary light source to be positioned freely while maintaining a simple overall configuration, as the light guide naturally bridges the spatial gap without requiring complex lateral routing or additional structural elements.
2Adaptability or versatility
If the auxiliary light source is provided at a position different from the mounting surface side with respect to the heat dissipation member, then the degree of freedom in installation position is improved, but the entire configuration increases in size
Solution Approach 1:
The light guide member is positioned within the heat dissipation member's structure, utilizing the existing spatial envelope. The light guide is nested inside or along the heat dissipation member's body, allowing the auxiliary light source to be installed at different positions without increasing the overall external dimensions of the lamp assembly.
3Stability of the object's composition
If the conventional vehicular lamp configuration is used, then the appearance consistency between lit and unlit states is improved, but the installation flexibility of auxiliary light source is suppressed
Solution Approach 1:
The light guide member serves as an intermediary element that connects the auxiliary light source to the mounting surface where the main light source is located. This mediator allows the auxiliary light source to be positioned freely while still achieving the desired appearance consistency by guiding light to illuminate the mounting surface area, thereby maintaining visual uniformity between lit and unlit states.
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 solution enables a consistent appearance between lit and unlit states while enhancing the degree of freedom in auxiliary light source installation, maintaining brightness and design simplicity.
Implementation Method 1
a light guide member that guides, toward a mounting surface provided with the main light source in the heat dissipation member, light from an auxiliary light source provided as a separate body from the main light source
Implementation Method 2
a heat dissipation member that releases heat from the main light source to outside
Data Source
AI summary
A vehicular lamp includes: a main light source that emits light for forming a predetermined irradiation pattern; an optical member that allows the light emitted from the main light source to travel toward a front side in an irradiation direction to form the irradiation pattern; a heat dissipation member that releases heat from the main light source to outside; and a light guide member that guides light from an auxiliary light source provided as a separate body from the main light source. In the heat dissipation member, the heat dissipation member is provided with an opening part that opens a mounting surface provided with the main light source, and the light guide member guides light from the auxiliary light source toward the mounting surface through the opening part.