Ceramic Illumination Device Heat Dissipation

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Solution Overview

Problem

Existing illumination devices require complex and costly designs with specific components for heat evacuation, such as air vents and heat-sinking components, which complicates the system and increases costs.

Innovation Solution

An illumination device using ceramic materials for both the carrier and envelope, where the envelope acts as a heat sink, allowing for effective heat dissipation without additional components, and incorporating transmissive or reflective regions for light distribution and concealment of the light source.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If air vents and heat-sinking components are used for heat evacuation, then heat dissipation effectiveness is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improveheat dissipation effectivenessVSAvoidsystem complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The patent merges the heat dissipation function with the envelope structure by making the envelope itself thermally conductive. The envelope integrates both its primary function of enclosing the light source and the secondary function of heat dissipation, eliminating the need for separate heat-sinking components and air vents.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The envelope is designed to serve multiple functions simultaneously: it provides mechanical enclosure, enables light transmission (with transmissive regions), and performs heat dissipation through its thermally conductive ceramic material. This multi-functionality reduces the overall number of components needed in the illumination device.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Temperature

If air vents and heat-sinking components are used for heat evacuation, then heat dissipation effectiveness is improved, but manufacturing cost increases

Engineering Contradiction:

Improveheat dissipation effectivenessVSAvoidmanufacturing cost

Core Design Contradiction:

TemperatureVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts the heat dissipation function from the traditional separate heat-sinking components and integrates it directly into the envelope material itself. This extraction eliminates the need for additional expensive thermal management components while maintaining effective heat dissipation.

Inventive Principle:

Principle #2Taking out (Extraction)

3Device complexity

If the envelope acts as a heat sink without additional components, then device complexity is reduced, but heat transfer effectiveness may worsen

Engineering Contradiction:

Improvesystem simplicityVSAvoidheat transfer effectiveness

Core Design Contradiction:

Device complexityVSTemperature

Solution Approach 1:

The patent changes the thermal conductivity parameter of the envelope material by selecting ceramic materials with high thermal conductivity values. This parameter change enables the envelope to effectively conduct heat away from the light source without requiring additional heat transfer components, thus maintaining heat transfer effectiveness while simplifying the device structure.

Inventive Principle:

Principle #35Parameter changes

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 simplifies the illumination device by integrating thermal, optical, and mechanical functions, providing efficient heat transfer and uniform light distribution without the need for specific heat transfer components, while maintaining a compact and cost-effective structure.

Implementation Method 1

the light source is in thermal contact with the carrier and the carrier is arranged in thermal contact with the envelope for dissipating heat out of the illumination device. Both the envelope and the carrier are made of ceramic material

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP2435754B1Ceramic illumination device

Publication Date: 2016.04.27 SIGNIFY HOLDING BV

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Figure 4a~4b

AI summary

The present invention provides an illumination device (100) comprising a light source (110) arranged to generate light, a carrier (120) arranged to support the light source and an envelope (130) enclosing the light source and the carrier. Further, the carrier is arranged in thermal contact with the envelope and both the envelope and the carrier are made of ceramic material. The present invention is advantageous in that it provides an illumination device providing an effective heat transfer.