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KR970078544A - Fan control circuit of projection TV - Google Patents

Fan control circuit of projection TV Download PDF

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Publication number
KR970078544A
KR970078544A KR1019960014246A KR19960014246A KR970078544A KR 970078544 A KR970078544 A KR 970078544A KR 1019960014246 A KR1019960014246 A KR 1019960014246A KR 19960014246 A KR19960014246 A KR 19960014246A KR 970078544 A KR970078544 A KR 970078544A
Authority
KR
South Korea
Prior art keywords
power
power supply
unit
supply voltage
voltage
Prior art date
Application number
KR1019960014246A
Other languages
Korean (ko)
Inventor
서광석
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960014246A priority Critical patent/KR970078544A/en
Publication of KR970078544A publication Critical patent/KR970078544A/en

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Abstract

본 발명은 프로젝션 텔레비젼의 팬 조절 회로에 관한 것으로서, 특히 전원가 오프된 후 세트 내부의 온도를 급냉각 시키기 위해 팬의 속도를 증가시키기 위한 회로에 관한 것이다.The present invention relates to a fan control circuit of a projection television, and more particularly to a circuit for increasing the speed of a fan to quench the temperature inside the set after the power is turned off.

교류 정류부에서 출력된 직류 전압을 전원 전압으로 하는 제1전원 전압부, 교류 정류부에서 출력된 직류전압을 전원 전압으로 하며, 제1전원 전압부의 전원 전압 보다 큰 전압을 갖는 제2전원 전압부, 프로젝션 텔레비젼의 전원 온, 오프에 따라서 상기 제1전원 전압부의 전원 전압을 선택하고, 전원이 오프되면 상기 제2전원 전압부의 전원 전압을 선택하는 선택부, 선택부에서 선택된 전원 전압에 따라서 속도가 조절되는 팬부, 계전부 및 선택부에 전원을 켜고, 끌시 전원 온, 오프 신호를 발생하는 제어부를 포함하는 것을 특징으로 한다.A second power supply voltage part having a DC voltage output from the AC rectification part as a power supply voltage and a DC voltage output from the AC rectification part as a power supply voltage and having a voltage higher than the power supply voltage of the first power supply part, A selection unit for selecting the power supply voltage of the first power supply voltage unit according to the turning on and off of the television and selecting the power supply voltage of the second power supply voltage unit when the power supply is turned off, And a control unit for turning on power to the fan unit, the control unit and the selection unit, and generating a power on / off signal when the control unit is turned off.

본 발명에 의하면, 전원이 오프된 후에 팬의 속도를 증가시켜 세트 내부의 온도를 급속하게 냉각 시킴으로서 재시동시에 전원 온을 신속하게 할 수 있는 잇점이 있다.According to the present invention, there is an advantage that the speed of the fan is increased after the power is turned off, and the temperature inside the set is rapidly cooled, so that the power can be turned on quickly at the time of restarting.

Description

프로젝션 텔레비젼의 팬 조절 회로Fan control circuit of projection TV

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 따른 프로젝션 텔레비젼의 팬 조절 회로를 보이는 회로도이다.FIG. 1 is a circuit diagram showing a fan control circuit of a projection television according to the present invention.

Claims (4)

프로젝션 텔레비젼의 전원에 따라서 팬의 속도를 조절하는 장치에 있어서, 입력되는 교류 전원 전압을 직류 전원 전압으로 변환하는 교류 정류부; 상기 교류 정류부의 교류 전원을 프로젝션 텔레비젼의 전원 온 및 오프 신호에 따라 단속하는 계전부; 상기 교류 정류부에서 출력된 직류 전압을 전원 전압으로 하는 제1전원 전압부; 상기 교류 정류부에서 출력된 직류 전압을 전원 전압으로 하며, 상기 제1전원 전압부의 전원 전압보다 보다 큰 전압을 갖는 제2전원 전압부; 상기 프로젝션 텔레비젼의 전원 온(ON), 오프(OFF)에 따라서 상기 제1전원 전압부의 전원 전압을 선택하고, 전원이 오프되면 상기 제2전원 전압부의 전원 전압을 선택하는 선택부; 상기 선택부에서 선택된 전원 전압에 따라서 속도가 조절되는 팬부; 상기 계전부 및 상기 선택부에 전원을 켜고, 끌시 전원 온(ON), 오프(OFF) 신호를 발생하는 제어부를 포함하는 것을 특징으로 하는 프로젝션 텔레비젼의 팬 조절 회로.An apparatus for adjusting a speed of a fan according to a power source of a projection television, comprising: an AC rectification unit for converting an input AC power supply voltage into a DC power supply voltage; A step of interrupting the AC power of the AC rectification section according to the power on and off signals of the projection television; A first power supply voltage unit having a DC voltage output from the AC rectification unit as a power supply voltage; A second power supply voltage unit having a DC voltage output from the AC rectification unit as a power supply voltage and having a voltage greater than a power supply voltage of the first power supply voltage unit; A selection unit for selecting a power source voltage of the first power source voltage unit according to power ON and OFF of the projection television and selecting a power source voltage of the second power source voltage unit when the power source is turned off; A fan unit whose speed is adjusted according to a power supply voltage selected by the selection unit; And a control unit for turning on power to the control unit and the selection unit and generating a power ON signal and an OFF signal for turning on the liquid crystal panel. 제1항에 있어서, 상기 계전부는 상기 제어부의 전원 온 및 오프신호에 따라서 교류 전원을 개폐하는 전원 계전부를 더 포함하는 것을 특징으로 하는 프로젝션 텔레비젼의 팬 조절 회로.The fan control circuit of a projection television according to claim 1, wherein the power control unit further comprises a power supply unit for opening and closing the AC power according to a power on / off signal of the control unit. 제1항에 있어서, 상기 계전부는 프로젝션 텔레비젼의 램프를 구동하기 위하여 상기 제어부의 전원 온 및 오프 신호에 따라서 상기 교류 정류부의 교류 전원을 단속하는 램프 구동 계전부를 더 포함하는 것을 특징으로 하는 프로젝션 텔레비젼의 팬 조절 회로.The projector according to claim 1, characterized in that the relay further comprises a lamp driving system for controlling the AC power of the AC rectification part according to a power on / off signal of the control part for driving the lamp of the projection television TV's fan control circuit. 제1항에 있어서, 상기 제1전원 전압부는 상기 제2전원 전압부로부터 역전류가 흐르지 않도록 역전류 방지 다이오드를 더 포함하는 것을 특징으로 하는 프로젝션 텔레비젼의 팬 조절 회로.The fan control circuit of a projection television according to claim 1, wherein the first power supply voltage unit further includes a reverse current prevention diode so that a reverse current does not flow from the second power supply voltage unit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960014246A 1996-05-02 1996-05-02 Fan control circuit of projection TV KR970078544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960014246A KR970078544A (en) 1996-05-02 1996-05-02 Fan control circuit of projection TV

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960014246A KR970078544A (en) 1996-05-02 1996-05-02 Fan control circuit of projection TV

Publications (1)

Publication Number Publication Date
KR970078544A true KR970078544A (en) 1997-12-12

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ID=66216880

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960014246A KR970078544A (en) 1996-05-02 1996-05-02 Fan control circuit of projection TV

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Country Link
KR (1) KR970078544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100575820B1 (en) * 2001-03-26 2006-05-03 엘지전자 주식회사 Lamp control method and apparatus in video system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100575820B1 (en) * 2001-03-26 2006-05-03 엘지전자 주식회사 Lamp control method and apparatus in video system

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A201 Request for examination
E902 Notification of reason for refusal
E902 Notification of reason for refusal
WITB Written withdrawal of application