Vehicular Lamp Dark Substrate Diffusion Concealment
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Solution Overview
Problem
Vehicle lamps experience dazzling issues due to light reflection during turn-on and off, and there are challenges in securing high positional accuracy and heat-dissipation performance between the substrate and heat-dissipation member, while also needing to conceal internal structures without increasing costs.
Innovation Solution
The vehicle lamp design incorporates a light emitting element with a dark-colored substrate, a reflection part, and a concealing part with a diffusion portion to diffuse light, along with positioning protrusions for accurate placement of the heat-dissipation plate, and a protruding portion on the heat-dissipation plate to increase the heat-dissipation area and conceal internal structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light emitting element is used to illuminate, then lighting function is achieved, but dazzling light occurs to oncoming vehicles or pedestrians
Solution Approach 1:
The patent converts the harmful reflection of light by making the reflection part transparent or translucent, allowing light to pass through rather than reflect back, thereby eliminating dazzling light while maintaining the lighting function
Solution Approach 2:
The patent changes the optical properties of the reflection part from reflective to transparent/translucent, effectively changing how light interacts with this component to prevent harmful glare
2Temperature
If heat-dissipation member is added to discharge heat, then heat-dissipation performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the heat-dissipation member with the substrate into a single integrated structure, eliminating the need for separate heat-dissipation components while maintaining effective heat dissipation through the substrate itself
Solution Approach 2:
The substrate is given dual functionality: serving both as the mounting base for the light emitting element and as the heat-dissipation member, thereby reducing overall device complexity
3Loss of energy
If heat transfer portion is provided between substrate and heat-dissipation member, then heat transfer efficiency is improved, but positional accuracy requirements increase
Solution Approach 1:
By integrating the heat-dissipation member directly with the substrate, the patent eliminates the heat transfer portion entirely, achieving heat transfer efficiency through direct contact without requiring precise positioning of separate components
4Shape
If internal structure is concealed, then aesthetic appearance is improved, but manufacturing complexity may increase
Solution Approach 1:
The patent integrates the lamp housing with the reflection part into a single structure, where the lamp housing itself serves as the concealing element, achieving aesthetic appearance without requiring additional separate concealing components
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 effectively suppresses dazzling light during operation, ensures high positional accuracy and improved heat-dissipation performance, and conceals internal structures without increasing manufacturing costs.
Implementation Method 1
a first diffusion portion configured to diffuse light is formed in at least a part of a region of the concealing part facing the reflection part
Implementation Method 2
light emitted from the light emitting element is reflected by a reflection part such as a reflector and irradiated to the outside
Implementation Method 3
heat generated when the light emitting element is turned on is discharged by a heat-dissipation member such as a heat-dissipation plate
Implementation Method 4
the conductive film and the insulation film function as a heat transfer portion for transferring heat from the substrate as a heat generation source to the heat-dissipation member
Data Source
AI summary
A vehicle lamp (1) includes a light emitting element (26, 56) functioning as a light source, a substrate (8, 11) on which the light emitting element is mounted, at least the portion of the substrate on which the light emitting element is mounted being colored in a dark color, a reflection part (14, 44) configured to reflect light emitted from the light emitting element, and a concealing part (13, 43) configured to hold the substrate and conceal at least a part of the substrate. A first diffusion portion (22, 52) configured to diffuse light is formed in at least a part of a region of the concealing part facing the reflection part.