LED Lighting Device with Rotated Assemblies for Uniform Distribution
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Solution Overview
Problem
Existing LED lighting devices for automotive applications often require large mounting structures to achieve uniform light distribution, which is not compact enough to replace traditional incandescent lamps effectively.
Innovation Solution
The LED lighting device arranges LED assemblies along a rotation axis with a defined rotation angle and offset, allowing for a compact configuration of LED elements that emit light uniformly in different directions, closely mimicking the light distribution of incandescent lamps while maintaining a small form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LED elements are arranged to achieve uniform light distribution in all directions, then illumination uniformity is improved, but device dimensions increase beyond acceptable limits
Solution Approach 1:
The patent divides the lighting device into multiple LED assemblies, each comprising several LED elements arranged in specific three-dimensional configurations. This segmentation allows each assembly to contribute to omnidirectional light distribution while keeping individual assembly sizes compact, thereby achieving uniform illumination without excessive overall dimensions.
Solution Approach 2:
The patent transitions from two-dimensional planar arrangements of LED elements to three-dimensional spatial configurations. LED elements are positioned at different heights and angles relative to a common mounting surface, creating a volumetric arrangement that emits light uniformly in all directions while maintaining a compact footprint.
2Illumination intensity
If multiple LED assemblies are arranged in three-dimensional configuration, then light distribution is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs a standardized mounting structure that serves multiple functions: it positions LED elements in three-dimensional space, provides mechanical support, and facilitates heat dissipation. This universal mounting approach simplifies manufacturing by using a single platform design for different LED configurations rather than custom structures for each arrangement.
Solution Approach 2:
The patent combines multiple LED elements into integrated LED assemblies that function as unified light-emitting units. By merging several LED elements and their mounting structures into compact assemblies, the patent reduces the number of discrete components that need to be handled during manufacturing while achieving the desired three-dimensional light distribution.
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 achieves a spatially uniform light distribution with a compact structure, enabling the LED lighting device to replace halogen lamps in automotive applications while meeting the size and performance requirements of traditional incandescent lamps.
Implementation Method 1
The LED lighting device comprises at least two LED assemblies, each comprising at least one LED element
Data Source
AI summary
A lighting device and a lighting unit comprising a reflector and a lighting device, or LED lamp are described. The LED lamp have a first and a second LED assembly. Each LED assembly comprises at least one LED element with an LED chip and a carrier with a flat surface for carrying the LED chip. The LED chip emits light with a main optical direction. The first and second LED assembly are mounted relative to each other so that at least a first LED element from the first LED assembly and a second LED element from the second LED assembly enclose a rotating angle (γ) between their respective flat surfaces with respect to an axis of rotation (A) so as to involve light angle between the first and second main optical directions. The axis of rotation (A) is parallel to a plane of a flat carrier surface of at least one LED element. The first and second LED assemblies are arranged offset from each other parallel to the axis of rotation (A). Thus, a lighting device with small dimensions and advantageous light distribution is obtained.