Angled LED Packing Density for Compact High-Intensity Lighting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Light-emitting apparatuses used for accent and projection lighting face challenges in increasing light intensity without enlarging the apparatus size, as existing designs restrict the number of light-emitting devices that can be mounted due to power supply and spatial constraints.
Innovation Solution
A light-emitting apparatus design that includes two pairs of terminals on a substrate, with light-emitting devices arranged in parallel along a diagonal line, connected in series and at angles to optimize packing density, allowing for a larger number of devices to be mounted without increasing the apparatus size, and utilizing an 'off the shelf' power supply by dividing the connection system into two separate driver systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the output wattage is increased to produce intense light, then the light intensity is improved, but the power supply compatibility deteriorates as off-the-shelf power supplies become unusable
Solution Approach 1:
The light-emitting devices are divided into two separate groups (first plurality and second plurality), each connected to separate power terminals. This segmentation allows the total light output to be achieved through two separate power supply connections, maintaining compatibility with standard off-the-shelf power supplies while still producing intense light when both groups operate simultaneously
2Illumination intensity
If the number of light-emitting devices is increased to increase output, then the light intensity is improved, but the apparatus size must be increased
Solution Approach 1:
The light-emitting devices are arranged at angles relative to the substrate rather than in a conventional linear or planar configuration. This angular arrangement in multiple dimensions allows for higher packing density of light-emitting devices within the same apparatus footprint, increasing light output without proportionally increasing the apparatus size
3Area of stationary object
If the apparatus size is restricted to maintain compact design, then the portability is improved, but the number of light-emitting devices that can be mounted is limited
Solution Approach 1:
By arranging light-emitting devices at angles relative to the substrate and utilizing three-dimensional space more effectively, the design achieves higher packing density. This angular configuration allows more devices to be mounted within the same planar area, maintaining compact apparatus size while increasing the number of light-emitting devices
Solution Approach 2:
The light-emitting devices are mounted at various angles relative to the substrate rather than in a uniform parallel arrangement. This asymmetric angular configuration optimizes the use of available mounting space, allowing higher device density within the same apparatus footprint compared to conventional symmetric arrangements
4Illumination intensity
If more light-emitting devices are mounted to increase output, then the light intensity is improved, but the design complexity increases due to restrictions on power terminal placement and interconnect pattern geometries
Solution Approach 1:
The design is segmented into two independent groups of light-emitting devices with separate power terminal connections. This segmentation simplifies the overall design by creating two manageable subsets rather than one complex large-scale connection system, reducing the complexity of power terminal placement and interconnect pattern geometries while still achieving high total output
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
Enables a higher number of light-emitting devices to be integrated within the same size constraints, allowing the apparatus to operate with standard power supplies and maintain efficient heat dissipation while producing intense, evenly distributed light.
Implementation Method 1
mounting light-emitting devices such as LED (light-emitting diode) devices directly on a conventional substrate
Implementation Method 2
the LED devices which emit, for example, blue light are sealed with a phosphor-containing resin, and the light emitted, from the LED devices is combined with the light generated by exciting the phosphor with the emitted light
Data Source
AI summary
Provided is a light-emitting apparatus including a substrate, first and second pairs of terminals, each pair including two terminals disposed at two opposed positions on the substrate, a first plurality of light-emitting devices which are mounted in one of two sections formed by bisecting a mounting region on the substrate by a line segment jointing the two positions, and which are connected to the first pair of terminals, and a second plurality of light-emitting devices which are mounted in the other section of the mounting region, and which are connected to the second pair of terminals, and wherein the first and second plurality of light-emitting devices are arranged in a direction parallel to the line segment, and are each mounted at an angle relative to one side of the substrate.