LED Oven Lamp Heat Shield Layout for High-Heat Illumination
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Solution Overview
Problem
Existing oven lights with heat barriers to protect LEDs from cooking chamber heat suffer from reduced light yield and difficulty in directing light optimally due to insulating means used for heat dissipation.
Innovation Solution
A heat barrier with disc-like shields, arranged in a staggered manner, allows light to pass through while maximizing heat shielding by matching the opening shape and size to the LED's light cone, and using materials with low thermal conductivity like high-temperature-resistant plastics or minerals to enhance heat reflection and dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulating means are used to protect the LED from cooking chamber heat, then the LED is protected from thermal damage, but the light yield is reduced and light direction is compromised
Solution Approach 1:
The heat barrier is divided into multiple disc-like heat shields arranged in a staggered sequence between the LED and cooking chamber. Each heat shield has an opening that corresponds to the light cone contour at its specific position, allowing light to pass through while maintaining thermal protection. This segmentation enables both heat blocking and light transmission functions to be fulfilled simultaneously.
Solution Approach 2:
Different regions of the heat barrier structure have different properties: the heat shields are made of thermally insulating materials to block heat, while the openings in each heat shield are sized and shaped to match the light cone contour to allow optimal light passage. This local differentiation of properties resolves the contradiction between heat protection and light transmission.
2Reliability
If thick insulating layers are used to protect the LED from heat, then thermal protection is improved, but light transmission is significantly reduced
Solution Approach 1:
Instead of using a single thick insulating layer, the patent employs multiple thin disc-like heat shields arranged in sequence. Each shield is relatively thin and has an opening that allows light to pass through unimpeded. The staggered arrangement ensures that light can travel through the gaps between shields while the shields themselves block thermal radiation from reaching the LED.
3Reliability
If the heat barrier is made solid to maximize heat shielding, then heat protection is improved, but light passage is blocked
Solution Approach 1:
The heat barrier incorporates openings in each heat shield that correspond to the light cone contour. These openings create a porous-like structure that allows light to pass through while the solid portions of the heat shields maintain thermal blocking capability. The staggered arrangement of multiple shields with openings optimizes both light transmission and heat shielding functions.
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 design effectively reduces heat load on the LED while maintaining light emission, ensuring optimal illumination and heat dissipation without significant light loss, even under high thermal loads.
Implementation Method 1
a heat sink on which the LED is arranged and with which the LED can be thermally connected
Implementation Method 2
the heat sink on which the LED is arranged and with which the LED can be thermally connected
Implementation Method 3
a thermal barrier arranged between the cover and the LED, which protects the LED from a cooking temperature
Implementation Method 4
shielding the LED from heat radiation over as large an area as possible
Data Source
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AI summary
Described and illustrated is an oven lamp, with a fastening sleeve that can be anchored in a recess in a cooking chamber wall, with a translucent cover that closes the recess in the cooking chamber wall, with a lamp that is arranged behind the translucent cover and whose emitted light is used to illuminate the Cooking chamber is used, wherein the light source is formed by at least one LED, which emits the light in the form of a light cone, the LED is arranged on a heat sink, which is used to dissipate the operating heat of the LED, with a heat barrier being arranged between the cover and the LED , which protects the LED from a cooking temperature, the light cone penetrating the arrangement plane of the heat barrier, the heat barrier having at least one heat shield, in particular translucent, with an opening through which the light from the LED passes in the direction of the cover.