Induction Cooker Linear Luminous Body Uniform Light Guide
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Solution Overview
Problem
Conventional induction heating cookers with linear luminous bodies face issues of space inefficiency, non-uniform light emission, and light loss due to the use of bullet-shaped LEDs, which require large installation spaces and result in interruptions and variations in light distribution.
Innovation Solution
The implementation of a linear luminous body with a chip LED light source and an annular or circular arc light guide body, where the light source is disposed within an insertion portion of the light guide body, allowing light to enter through side surfaces and providing continuous light lead-in portions, enabling uniform light emission and reducing assembly variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If bullet-shaped LEDs are used as light sources in the linear luminous body, then the light can be emitted along the outer periphery of the induction heating coil, but the installation space required increases significantly
Solution Approach 1:
The patent embeds the light source directly within the light guide body structure, nesting the illumination function inside the guiding structure itself. This eliminates the need for separate external mounting of bullet-shaped LEDs and reduces the overall installation space required for the linear luminous body.
2Illumination intensity
If multiple light lead-in portions are connected to the annular light guide body to uniformly diffuse light, then light distribution improves, but the device complexity and installation space increase
Solution Approach 1:
The patent combines the light guiding function and light diffusion function into a single integrated light guide body structure. The light guide body itself is designed with internal features that enable uniform light distribution, eliminating the need for separate light lead-in portions and reducing structural complexity.
3Illumination intensity
If bullet-shaped LEDs are positioned at specific locations to illuminate the light guide body, then light can be emitted, but variations in angle and position cause light loss and non-uniform emission
Solution Approach 1:
The patent uses the light guide body as an intermediary that receives light from the light source and redistributes it uniformly along its structure. This intermediary structure compensates for positioning variations of the light source, ensuring consistent light emission regardless of minor manufacturing tolerances in light source placement.
4Illumination intensity
If two bullet-shaped LEDs are positioned at opposite ends to illuminate the annular light guide body, then circumferential lighting is achieved, but the installation locations remain dark and the continuity of light emission is interrupted
Solution Approach 1:
The patent designs the light guide body as a continuous annular or circular arc structure that guides and emits light continuously around the entire periphery of the induction heating coil. This ensures uninterrupted light emission and maintains visual continuity of the heating range indication.
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 allows for nearly uniform annular or circular arc light emission, conserves space, minimizes light loss, and ensures a clear, linear display of the heating range, enhancing the visibility of the induction heating coil's operational status.
Implementation Method 1
a light source having a chip LED
Implementation Method 2
an annular or circular arc light guide body, where the light source is disposed within an insertion portion of the light guide body, allowing light to enter through side surfaces
Implementation Method 3
an induction heating coil operable to heat a cooking container placed on the top plate by induction heating
Data Source
Figure 1
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Figure 4
AI summary
A linear luminous body provided at an outer periphery of the induction heating coil includes a light source having a chip LED and an annular light guide body, wherein the light guide body having an insertion portion through which the light source is disposed within the light guide body, and light from the light source enters the light guide body through a side surface of the insertion portion, thereby the linear luminous body can emit light nearly uniformly as an upper surface of the light guide body is a light emitting surface.