Micro-foamed Resin Sheet for Illumination and Wireless Integration
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Solution Overview
Problem
Conventional composite structures integrating LED illumination devices and wireless communication devices face challenges such as radio wave absorption and uneven brightness due to the high dielectric constant of substrates and reflecting plates used in illumination devices.
Innovation Solution
A composite structure utilizing a micro-foamed resin sheet with a low dielectric constant is introduced, where the illumination device is disposed in front of the wireless communication device. The micro-foamed resin sheet serves as a light diffusion reflective plate and is designed to minimize radio wave absorption while ensuring uniform light brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional substrate or reflecting plate with high dielectric constant is used in the illumination device, then the illumination structure is simple and manufacturing is easy, but radio wave absorption increases and transmission loss worsens
Solution Approach 1:
The patent changes the dielectric constant parameter of the material used in the illumination device by employing a micro-foamed resin sheet with low dielectric constant (lower than conventional substrates and reflecting plates). This parameter change reduces radio wave absorption while maintaining the illumination function, thereby resolving the contradiction between ease of manufacture and radio wave transmission loss.
Solution Approach 2:
The patent uses a composite structure where a micro-foamed resin sheet is integrated into the illumination device, combining the light diffusion/reflective properties needed for uniform brightness with the low dielectric constant property needed for reduced radio wave absorption. This composite material approach allows simultaneous achievement of manufacturing simplicity and reduced energy loss.
2Device complexity
If a conventional substrate or reflecting plate with high dielectric constant is used in the illumination device, then the illumination structure is simple, but radio wave scattering loss increases
Solution Approach 1:
The patent changes the dielectric constant parameter of the illumination device materials to low values by using micro-foamed resin sheets. This parameter modification reduces both absorption and scattering losses of radio waves while maintaining the structural simplicity and illumination performance, thereby resolving the contradiction between device complexity and energy loss.
3Adaptability or versatility
If the illumination device is disposed in front of the wireless communication device, then integration is achieved and installation flexibility improves, but radio wave transmission may be hindered by the illumination device components
Solution Approach 1:
The patent changes the material parameters of the illumination device by using micro-foamed resin sheets with low dielectric constants, allowing the illumination device to be disposed in front of the wireless communication device without significant radio wave transmission loss. This enables flexible integration and installation while maintaining radio wave transmission performance.
Solution Approach 2:
The micro-foamed resin sheet acts as an intermediary material between the illumination components and the radio wave transmission path. It provides the necessary light diffusion and reflective properties for uniform brightness while simultaneously serving as a low-dielectric-constant medium that allows radio waves to pass through with minimal loss, enabling the illumination device to be positioned in front of the wireless communication device.
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
The proposed solution achieves reduced radio wave transmission loss and scattering loss, while maintaining uniform brightness and providing a protective effect for the wireless communication device without hindering radio wave transmission.
Implementation Method 1
light emitted from the emission surface of the LED light source is reflected by the micro-foamed resin sheet
Implementation Method 2
The micro-foamed resin sheet excels in light diffuse reflectance properties
Implementation Method 3
The micro-foamed resin sheet excels in radio wave transmission performance with a low dielectric constant
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
This composite structure (1) is a structure in which an illumination device (3) and a wireless communication device (17) have been integrated and composited. A light transmitting member (7) is placed on the opening side of a micro-foamed resin sheet (15) having a depression-like recessed shape. A light guiding space (19) is formed between the molded micro-foamed resin sheet (15) and the light transmitting member (7). An LED light source (13) is placed on a substrate (11). A wireless communication device (17) is placed on the back surface side of the micro-foamed resin sheet (15), which is the side opposite to the light guiding space (19). In the composite structure (1), the micro-foamed resin sheet (15) placed in front of the wireless communication device (17) functions as a portion of a housing of the illumination device (3), and is placed so as to contact a radio wave-emitting surface of the wireless communication device (17). As a result, it is possible to obtain a composite structure of an illumination device and a wireless communication device that not only excels in light diffuse reflectance properties and low radio wave transmission loss, but also excels in radio wave scattering loss.