Frustum Base Plate LED Lamp Lateral Light Distribution
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Solution Overview
Problem
Traditional LED vehicle lamps with cuboid base plates suffer from reduced illumination range and non-uniform light distribution due to light being blocked by the upper surface, affecting the overall illumination effect.
Innovation Solution
The use of a frustum base plate with a narrower upper surface than lower surface allows light to be emitted laterally without obstruction, combined with a circuit board configuration and phosphor coatings to enhance light distribution and heat management, using high-thermal-conductivity materials like copper for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a cuboid base plate is used in traditional LED vehicle lamps, then the structure is simple and easy to manufacture, but the light emitted to the lower side is blocked by the upper surface, reducing illumination range and creating non-uniform light distribution
Solution Approach 1:
The base plate transitions from a symmetric cuboid shape to an asymmetric frustum shape with different upper and lower surface areas. The upper surface area is smaller than the lower surface area, creating an asymmetric structure that allows light to be emitted laterally without obstruction while maintaining structural stability and ease of manufacture.
Solution Approach 2:
The invention changes the base plate structure from a two-dimensional flat surface (cuboid top surface) to a three-dimensional frustum shape with varying surface areas. This dimensional change creates lateral space for light emission while maintaining a relatively simple single-piece structure that is easy to manufacture.
2Illumination intensity
If a cuboid base plate is used, then manufacturing is simple, but light distribution becomes non-uniform due to blocking by the upper surface
Solution Approach 1:
The frustum base plate uses asymmetric geometry where the upper surface area is deliberately made smaller than the lower surface area. This asymmetric design naturally directs light laterally without blocking, achieving uniform light distribution while the frustum shape itself remains a simple single-piece structure that is relatively easy to manufacture using conventional processes.
3Reliability
If LED chips are installed on a cuboid base plate, then the installation process is straightforward, but the illumination effect is compromised due to light blocking
Solution Approach 1:
The base plate adopts an asymmetric frustum geometry with a smaller upper surface area compared to the lower surface area. This asymmetric shape ensures that light emitted by LED chips toward the lower side is not blocked, thereby improving illumination effect and reliability while maintaining a relatively simple single-piece structure.
Solution Approach 2:
The invention transitions from a flat two-dimensional mounting surface to a three-dimensional frustum structure. This dimensional change creates lateral emission space that improves illumination reliability without requiring complex multi-component assemblies, as the frustum itself provides the necessary geometric functionality.
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 increases the illumination range, achieves more uniform light distribution, and enhances the overall illumination effect while improving heat dissipation and prolonging the service life of the LED vehicle lamp.
Implementation Method 1
Light emitted by LED chips to the lower side of the frustum base plate will not be blocked by the frustum base plate and can be emitted to the lateral space below the frustum base plate
Implementation Method 2
A first phosphor may be arranged on the first substrate, meanwhile the first LED chip and the first substrate may be coated with the first phosphor
Implementation Method 3
using high-thermal-conductivity materials like copper for improved performance
Data Source
AI summary
The present disclosure relates to an LED vehicle lamp with a frustum base plate. The LED vehicle lamp includes a base plate, a circuit board and a plurality of LED chips. The base plate is a frustum base plate. The frustum base plate is arranged on an axis of the LED vehicle lamp. A width of an upper bottom surface of the frustum base plate is smaller than that of a lower bottom surface of the frustum base plate. An axis of the circuit board is parallel to an axis of the frustum base plate. A width of the circuit board is smaller than that of the upper bottom surface of the frustum base plate. The circuit board is installed on the upper bottom surface of the frustum base plate, and the plurality of LED chips are installed on the circuit board.