Projector Thermal Management via Extracted Driver Board Layout

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Solution Overview

Problem

The existing projection display equipment faces heat dissipation challenges due to the isolation of the driver board and fan by other components, leading to poor airflow and limited operating environment temperature, which can trigger shutdown protection and affect normal use.

Innovation Solution

Incorporating a metallic aluminum radiator and a ventilating fan beside the light source lamp, driver board, and power circuit board, with a detachable shell and optimized airflow channels, to enhance heat dissipation and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the driver board and fan are isolated by other components, then the structural layout is compact, but the heat dissipation airflow channel is blocked and heat dissipation effect is poor

Engineering Contradiction:

Improvecompact layoutVSAvoidheat dissipation effect

Core Design Contradiction:

Volume of moving objectVSTemperature

Solution Approach 1:

The driver board is extracted from the traditional enclosed layout and positioned directly adjacent to the fan, removing the blocking components between them. This extraction enables direct airflow contact between the fan and driver board, resolving the contradiction by prioritizing heat dissipation while maintaining compact overall structure through optimized component placement

Inventive Principle:

Principle #2Taking out (Extraction)

2Device complexity

If the heat dissipation airflow channel is blocked, then the component arrangement is simplified, but the heat dissipation stability is limited

Engineering Contradiction:

Improvecomponent arrangementVSAvoidheat dissipation stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The internal cavity is segmented into distinct functional zones: a heat dissipation cavity for the light source with dedicated airflow channels, and a driver board area with direct fan access. This segmentation creates independent heat dissipation pathways that ensure stable thermal management while maintaining clear component arrangement

Inventive Principle:

Principle #1Segmentation

3Reliability

If the operating environment temperature is limited, then the shutdown protection function is triggered, but the normal use is affected

Engineering Contradiction:

Improveshutdown protection functionVSAvoidnormal use

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The aluminum alloy radiator is preliminarily positioned between the light source and driver board, creating a thermal management system that proactively dissipates heat before it accumulates to trigger shutdown protection. This preliminary heat dissipation action maintains reliable temperature control while ensuring continuous normal operation

Inventive Principle:

Principle #10Preliminary action

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 effectively discharges heat generated by the light source and power circuit board, preventing damage from excessive temperatures, relaxing environmental temperature requirements, and reducing noise while maintaining cost-effectiveness.

Implementation Method 1

a light source heat dissipation system composed of the metallic aluminum radiator and the ventilating fan, so that when a projector operates, the heat generated by the light source lamp and power circuit board is effectively discharged

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

Methodology Applied

Scientific EffectForced convection: Forced Convection

Data Source

PatentUS10073332B1Projection display equipment

Publication Date: 2018.09.11 SHENZHEN DIYICHUANGXIANG ELECTRONICS COMMERCE CO LTD

AI summary

The patent discloses projection display equipment which comprises a shell and a detachable shell cover, wherein a light source device, an optical conversion device, a driver board provided with a video input interface, a power circuit board provided with a power interface, and a loudspeaker are arranged in the shell, a front air outlet and a rear air outlet are formed in the side faces of the shell, and supporting feet are arranged at the lower end of the shell; the light source device is connected with the driver board and the power circuit board through wires; the driver board and the power circuit board are connected through a wire; the loudspeaker is connected with the power circuit board through a wire; the light source device is connected with a radiator; a ventilating fan is arranged beside a light source lamp circuit board, the power circuit board and the loudspeaker.