Light Source Module with Guided Illumination for Ceramic Glass
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Solution Overview
Problem
Existing cooking appliances with indication lamps require special surface-treated glass to achieve lighting effects, increasing manufacturing time and costs due to the need for light transmission in specific regions, which is not feasible with general ceramic glass.
Innovation Solution
A light source module comprising LEDs, a light source guide with a light transmitting path, and a shield to direct light to a predetermined region on the glass top plate, using a diffuser to spread light and prevent heat transfer, allowing effective lighting without special surface-treated glass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If special surface-treated glass is used to transmit light through predetermined regions, then lighting effect is achieved, but manufacturing time and costs increase
Solution Approach 1:
The glass surface is divided into a light transmission region and a non-transmission region, with the light transmission region specifically treated to allow light passage while the non-transmission region remains opaque. This segmentation enables selective light transmission without treating the entire glass surface, reducing manufacturing complexity and costs.
Solution Approach 2:
The glass surface is given different properties in different regions: the light transmission region has surface treatment for light transmission, while the non-transmission region maintains its original opaque properties. This local differentiation achieves the lighting effect only where needed, avoiding unnecessary manufacturing steps across the entire glass surface.
2Illumination intensity
If indication lamp light is transmitted through ceramic glass, then lighting effect is provided, but heat transfer to LED occurs in high-temperature environments
Solution Approach 1:
A light guide is introduced as an intermediary component between the LED and the ceramic glass. The light guide receives light from the LED and transmits it to the glass surface, while its heat-resistant properties prevent direct heat transfer from the high-temperature glass to the LED, thus protecting the LED from thermal degradation.
Solution Approach 2:
The light guide is designed as a replaceable component that can be easily replaced if degraded by heat. This approach allows the use of simpler, more cost-effective materials for the light guide that prioritize light transmission over long-term heat resistance, while the overall system maintains reliability through easy replacement rather than requiring expensive heat-resistant materials throughout.
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 solution provides a cost-effective and efficient lighting effect on general-purpose ceramic glass, reducing manufacturing time and costs while maintaining high-quality illumination, even in high-temperature cooking environments, and preventing LED degradation from excessive heat.
Implementation Method 1
a light source guide to accommodate the light source, including a light transmitting path formed in the light source guide
Implementation Method 2
using a diffuser to spread light
Implementation Method 3
a shield to direct light to a predetermined region on the glass top plate, using a diffuser to spread light and prevent heat transfer
Data Source
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AI summary
The present disclosure relates a light source module and a cooking appliance including the same. The light source module includes a light source emitting light toward a glass top plate, a light source guide to accommodate the light source, form a light transmitting path formed therein, and limit a light irradiation region so as to guide light emitted from the light source to a light display region of the upper glass through the light transmitting path, and an attachment bracket provided between the light source guide and the glass top plate, the attachment bracket having an optical emission path allow light to pass from the light transmitting path to the light display region.