LED Bulb Glare Shield for Sensor Light Interference
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Solution Overview
Problem
Conventional light emitting diode bulbs with sensor functions suffer from abnormal sensor operation due to light interference, where emitted, refracted, or reflected light from the LED bulb affects the sensor, leading to incorrect responses.
Innovation Solution
The implementation of a glare shield structure that separates the sensor from the light emitting diode, combined with a condenser lens and a transparent lamp shade, prevents light from entering the sensor's detection range, using a sleeve or joggle design for easy assembly and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor is disposed on the light emitting diode bulb without a glare shield, then the structure is simple and manufacturing cost is low, but the sensor is affected by light from the LED module causing abnormal operation
Solution Approach 1:
A glare shield structure is introduced as an intermediary component between the LED light emitting module and the sensor. This shield physically blocks light from reaching the sensor while allowing the sensor to detect ambient light and human presence through the transparent lamp shade from other directions. The glare shield serves as a mediator that prevents harmful light interference without completely isolating the sensor from its detection environment.
Solution Approach 2:
The bulb structure is segmented into distinct functional zones: the LED module is positioned in one area, the sensor is placed in a separate location, and the glare shield creates a dedicated light-blocking zone between them. This spatial segmentation allows each component to perform its function independently without interference, resolving the contradiction between structural simplicity and sensor reliability.
2Reliability
If a glare shield structure is added to separate the sensor from the light emitting diode, then light interference with the sensor is prevented, but the device complexity and manufacturing cost increase
Solution Approach 1:
The glare shield is implemented as a thin, transparent or translucent shield that can be integrated into the existing bulb structure. This thin-film approach provides effective light blocking for the sensor while maintaining overall bulb transparency and minimizing material usage. The simple geometric shape of the shield allows for easy molding and assembly, keeping manufacturing costs low despite the added component.
Solution Approach 2:
The glare shield structure is designed to serve multiple functions: it blocks light from reaching the sensor, maintains the aesthetic appearance of the transparent lamp shade, and can be integrated with the existing bulb housing structure. By combining multiple functions into a single component, the design avoids the need for additional separate parts, thereby controlling manufacturing complexity and cost.
3Measurement precision
If the sensor is positioned near the light emitting diode module, then the bulb structure is compact, but the sensor cannot accurately detect ambient light due to LED light interference
Solution Approach 1:
Instead of positioning the sensor only in terms of distance from the LED module, the design utilizes three-dimensional spatial arrangement by placing the sensor at a specific angular position relative to the LED module and lamp shade. The glare shield creates a conical or directional light-blocking zone, allowing the sensor to detect light from specific directions (through the transparent lamp shade) while blocking light from the LED module direction. This dimensional approach to light path management enables accurate detection within a compact volume.
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 solution effectively prevents light interference with the sensor, ensuring accurate operation and increased illumination range while simplifying the assembly and reducing production costs.
Implementation Method 1
a glare shield structure for separating light from the light emitting diode module to interfere the sensor
Implementation Method 2
a condenser lens sleeved to outer side or inner side of the glare shield tube
Data Source
AI summary
The present invention relates to a light emitting diode bulb with a glare shield structure. It uses a glare shield structure to separate the sensor from the light emitting diode. A joggle structure or a sleeve structure is used for the glare shield structure to separately match the separated condenser lens and the lamp base to form glare shield means to prevent the sensor from being interfered by irradiated, refracted or reflected light from the light emitting diode. The structure is simple to be assembled and the cost of assembling is reduced.