Wall-Mounted Display Power Control for Thermal Management

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Display apparatuses mounted on walls experience insufficient cooling due to reduced heat radiation efficiency, leading to higher internal temperatures and potential performance and reliability issues, as the thinner design restricts air circulation and reduces the space available for heat dissipation.

Innovation Solution

A placed state detector and power controller system that adjusts the display power supplied to the unit based on the installation state, reducing power consumption and heat generation when mounted on a wall by lowering the power when detected in a wall-mounted state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of stationary object

If the display apparatus is made thinner to reduce weight and improve wall-mountability, then the weight and thickness are reduced, but the heat radiation efficiency deteriorates and internal temperature rises

Engineering Contradiction:
ImproveweightVSAvoidinternal temperature
Core Design Contradiction:
Weight of stationary objectVSTemperature

Solution Approach 1:

The invention changes the operating parameters of the display apparatus based on the mounting state. When wall-mounted, the apparatus operates at reduced power levels to generate less heat, compensating for the poor heat dissipation conditions caused by the thin design and limited rear clearance space.

Inventive Principle:
Principle #35Parameter changes

2Length of stationary object

If the display apparatus is made thinner to improve wall-mountability, then the thickness is reduced, but the heat radiation efficiency deteriorates

Engineering Contradiction:
ImprovethicknessVSAvoidheat radiation efficiency
Core Design Contradiction:
Length of stationary objectVSLoss of energy

Solution Approach 1:

The invention adjusts the power consumption parameters when the apparatus is wall-mounted to account for the reduced heat radiation efficiency. By lowering the operating power, the system generates less heat that needs to be dissipated, compensating for the limited thermal management capability of the thin wall-mounted configuration.

Inventive Principle:
Principle #35Parameter changes

3Volume of stationary object

If the display apparatus is mounted on a wall to save space, then the installation space is reduced, but the cooling efficiency deteriorates due to insufficient air circulation

Engineering Contradiction:
Improveinstallation spaceVSAvoidinternal temperature
Core Design Contradiction:
Volume of stationary objectVSTemperature

Solution Approach 1:

The invention detects the wall-mounted state and automatically adjusts operating parameters to reduce power consumption and heat generation. This compensates for the insufficient cooling efficiency caused by the limited air circulation space behind the wall-mounted apparatus.

Inventive Principle:
Principle #35Parameter changes

4Illumination intensity

If the display power is increased to improve image quality, then the image quality is improved, but the heat generation increases and reliability deteriorates when wall-mounted

Engineering Contradiction:
Improveimage qualityVSAvoidreliability
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The invention adjusts the display power parameters based on the mounting state detection. When wall-mounted, the system operates at reduced power levels to prevent excessive heat generation that would compromise reliability, while still maintaining acceptable image quality within the thermal constraints.

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

Effectively suppresses temperature rise and improves reliability by optimizing power usage and heat management, ensuring the display apparatus does not exceed tolerable temperatures, even in wall-mounted configurations, while reducing power consumption.

Implementation Method 1

a wall mount switch detecting the wall mount member if attached to the rear of the display apparatus

Methodology Applied
Scientific EffectElectrical contact detection: Conduction (electrical)

Implementation Method 2

a stand detecting sensor detecting the stand if inserted into the bottom of the display apparatus

Methodology Applied
Scientific EffectSensor detection:

Implementation Method 3

Enlarging the screen of a display apparatus increases the power dissipation and heat generation of the display unit

Methodology Applied
Scientific EffectPower dissipation and heat generation: Joule Heating

Implementation Method 4

Although these heat generating components are cooled by air circulation within the display apparatus

Methodology Applied
Scientific EffectAir circulation cooling: Convection

Implementation Method 5

a cooling fan which draws in outside air to cool the display apparatus

Methodology Applied
Scientific EffectForced air movement: Fan

Data Source

PatentUS8085259B2Display apparatus
Publication Date: 2011.12.27 MAXELL LTD
  • US8085259B2 patent drawing
  • US8085259B2 patent drawing
  • US8085259B2 patent drawing

AI summary

The present invention improves the reliability of a display apparatus by suppressing the temperature rise of the display apparatus mounted on a wall. The display apparatus is provided with a wall mount switch to detect a wall mount member if the wall mount member is attached to the rear of the display apparatus. If it is detected by the wall mount switch that the display apparatus is mounted on a wall, the display power supplied to a display unit is set lower than normal by a power controller. This suppresses the temperature rise of the apparatus mounted on a wall.