Lighting Device Cross-Ventilation Chimney Effect Heat Dissipation

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Solution Overview

Problem

High-power lighting devices face reliability and longevity issues due to heat generation by the light source and driving power supply components, which is compounded by the weight and cost of traditional heat dissipation structures.

Innovation Solution

The lighting device incorporates a passage through its housing and optical element for cross-ventilation, allowing effective heat dissipation without additional heat dissipation structures, by utilizing the housing, optical element, and flow guide plate to create a chimney effect that reduces internal temperatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If traditional heat dissipation structures are added to the lighting device, then heat dissipation performance is improved, but device complexity and weight increase

Engineering Contradiction:

Improveheat dissipation performanceVSAvoidstructure complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The patent merges the heat dissipation function with existing structural components (housing and optical element) by integrating passages through them. This eliminates the need for separate heat dissipation structures while achieving effective heat removal from the light source and driving power supply components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The housing and optical element serve dual functions: their primary functions (protection and light transmission) plus an additional heat dissipation function through the integrated passages. This multi-functionality reduces overall device complexity by eliminating dedicated heat dissipation components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Temperature

If traditional heat dissipation structures are added to the lighting device, then heat dissipation performance is improved, but device weight increases

Engineering Contradiction:

Improveheat dissipation performanceVSAvoiddevice weight

Core Design Contradiction:

TemperatureVSWeight of stationary object

Solution Approach 1:

The heat dissipation passages are merged into the existing housing and optical element structures. This integration approach eliminates the need for additional heat dissipation components that would increase device weight, while still achieving effective heat removal.

Inventive Principle:

Principle #5Merging (Combining)

3Temperature

If additional heat dissipation components are used, then heat dissipation performance is improved, but manufacturing cost increases

Engineering Contradiction:

Improveheat dissipation performanceVSAvoidmanufacturing cost

Core Design Contradiction:

TemperatureVSEase of manufacture

Solution Approach 1:

The passages are integrated into the housing and optical element during their manufacturing processes. This merging approach eliminates the need for separate heat dissipation components and their associated manufacturing costs, while achieving effective heat dissipation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The housing and optical element perform multiple functions including structural support, protection, light transmission, and heat dissipation. This multi-functionality reduces the total component count and manufacturing complexity, thereby lowering production costs.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If heat dissipation structures are added, then reliability is improved through better temperature control, but device complexity increases

Engineering Contradiction:

ImprovereliabilityVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The heat dissipation passages are merged into the existing housing and optical element structures. This integration improves reliability through effective temperature control while avoiding the increased complexity that would result from adding separate heat dissipation components.

Inventive Principle:

Principle #5Merging (Combining)

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 enhances heat dissipation, increases the reliability and service life of the lighting device, reduces weight, and lowers costs by eliminating the need for extra heat dissipation components, achieving a temperature reduction of over 15°C.

Implementation Method 1

a passage located in the receiving chamber, where the passage passes through the housing and the optical element, and an interior of the lighting device is communicated with an exterior of the lighting device by the passage

Methodology Applied

Scientific EffectConvection: Convection

Data Source

PatentUS10928056B2Lighting device

Publication Date: 2021.02.23 OPPLE LIGHTING CO LTD

AI summary

The present disclosure discloses a lighting device, including: a housing, an optical element connected with the housing, a receiving chamber formed by engaging the housing with the optical element, and a light source component and a driving power supply component both located in the receiving chamber. The lighting device further includes a passage located in the receiving chamber, the passage passes through the housing and the optical element, and an interior of the lighting device is communicated with an exterior of the lighting device by the passage.