People Meter Illumination via Housing Light Passageway
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Solution Overview
Problem
Conventional people meters in audience measurement systems face challenges with inefficient illumination of display panels due to high manufacturing complexity and costs, often using traditional leaded LEDs or surface-mounted LEDs with light pipes that result in insufficient illumination and increased power consumption.
Innovation Solution
The solution involves a light passageway formed within the housing of the people meter between the light source on the printed circuit board and the visual indicator, eliminating the need for traditional light pipes, and using surface-mounted LEDs with a reflective chamber and light port to enhance illumination efficiency while simplifying manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional leaded LEDs or surface-mounted LEDs with light pipes are used, then the display panel can be illuminated, but the manufacturing complexity and costs increase significantly
Solution Approach 1:
The patent removes the light pipe component from the illumination system, replacing it with a direct optical path through the housing. This extraction of the unnecessary light pipe element simplifies the manufacturing process while maintaining illumination functionality.
Solution Approach 2:
The housing structure is merged with the optical path function. The housing itself is designed to provide the light transmission path, combining structural support and optical guidance into a single integrated component, thereby eliminating the need for separate light pipe elements.
2Illumination intensity
If traditional leaded LEDs or surface-mounted LEDs with light pipes are used, then the display panel can be illuminated, but the manufacturing costs increase significantly
Solution Approach 1:
By removing the light pipe component, the patent reduces the number of parts that need to be manufactured, assembled, and quality-checked, directly lowering manufacturing costs while preserving the illumination function through the simplified direct optical path.
Solution Approach 2:
The patent employs standard surface-mounted LEDs without requiring expensive leaded LED assemblies or complex light pipe structures. This substitution with simpler, more readily available components reduces material costs and assembly complexity.
3Illumination intensity
If traditional LED illumination methods are used, then the display panel can be illuminated, but the power consumption increases
Solution Approach 1:
The patent converts what would be light loss through complex light pipe paths into beneficial direct illumination. By eliminating the intermediate light pipe transmission step, more light energy reaches the display panel directly, improving illumination efficiency and reducing the power needed to achieve the same brightness level.
4Illumination intensity
If traditional LED illumination methods are used, then the display panel can be illuminated, but the illumination effectiveness is insufficient
Solution Approach 1:
The patent segments the illumination function from the complex light pipe assembly and integrates it directly into the housing-LED interface. This segmentation allows for more precise control of light delivery to the display panel, improving illumination effectiveness while simplifying the overall structure.
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 significantly increases illumination effectiveness while reducing manufacturing complexity and costs, ensuring that the display panel is adequately illuminated, improving user interaction and data collection accuracy.
Implementation Method 1
a light source on a printed circuit board
Implementation Method 2
using surface-mounted LEDs with a reflective chamber and light port to enhance illumination efficiency
Data Source
AI summary
An example electronic device includes a printed circuit board having a first row of light sources coupled to a first surface of the printed circuit board and a second row of light sources coupled to a second surface of the printed circuit board; a panel having a plurality of visual indicators; an first housing having a first row of chambers each having a first opening to receive one of the first row of light sources and a second opening to communicate light from the one of the first row of light sources to one of the visual indicators; and a second housing having a second row of chambers each having a third opening to receive one of the second row of light sources and a fourth opening to communicate light from the one of the second row of light sources to a second one of the visual indicators.