Rear-projection TV. set with anti-superheat monitoring system and its method

A monitoring system and anti-overheating technology, which is applied to the components of the TV system, TV, transmission monitoring, etc., can solve the problems of poor heat dissipation, crash, and lack of filtered air in the internal components of the chassis, and achieve large automatic control performance. Good human-machine interface, the effect of preventing damage

Active Publication Date: 2005-03-23
HISENSE
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Problems solved by technology

[0004] The filter is set to filter the air without affecting the performance of various precision optical devices inside. However, if the filter is blocked by dust particles after long-term use, it will not only fail to fi

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  • Rear-projection TV. set with anti-superheat monitoring system and its method
  • Rear-projection TV. set with anti-superheat monitoring system and its method
  • Rear-projection TV. set with anti-superheat monitoring system and its method

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Embodiment Construction

[0027] Such as figure 1 , Figure 4 As shown, the anti-overheating monitoring system that the rear projection TV set of the present invention has mainly includes: a system microprocessor MCU, a temperature detection device, an optical machine control module, a power switch control module (STANDBY) and a display screen (OSD or LED).

[0028] Among them, the system MCU monitors the operation of the entire system and the execution of the set program instructions;

[0029] The temperature detection device is used to detect the temperature change of the main components in the chassis in real time, such as Figure 4 As shown, the temperature detection module includes a voltage comparator composed of OA1 and OA2, which sends the voltage changes caused by temperature fluctuations to the MCU for judgment.

[0030] Use the thermistor R to detect the ambient temperature inside the chassis. When the temperature changes, the resistance value of the thermistor R increases, and the volta...

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Abstract

A anti-superheat monitoring system of the rear-projection television includes the MCU, temperature detect device, bare engine control module, power switch control module and display screen. It controls the temperature of the devices within certain scale through temperature monitoring and warning system. It can realize the self-maintenance and guarantee the back casting television in the safe mode without the man-made interference.

Description

technical field [0001] The invention relates to a rear-projection television with an overheating prevention monitoring system and a monitoring method thereof, in particular to the problem of overheating of internal components caused by accidental blockage of the filter screen of the rear-projection television. Background technique [0002] At present, the domestic demand for rear-projection TVs is increasing day by day, and consumers have higher requirements for the performance and safety of rear-projection TVs. [0003] Based on the principle of projection imaging, a large number of high-power heaters are used in rear-projection TVs. Therefore, most rear-projection TVs in the existing design mode adopt convection cooling, that is, a convection fan is set to cool the internal components of the rear-projection TV. Cool down. Corresponding to the above structure, a filter screen is usually provided at the vent to prevent particles such as dust from being sucked into the chass...

Claims

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Application Information

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IPC IPC(8): H04N5/74
Inventor 王建亭黄文杰刘铭涛尚军辉董玉珍
Owner HISENSE
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