KR930023764A - LCD Projector Cooling System - Google Patents

LCD Projector Cooling System Download PDF

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Publication number
KR930023764A
KR930023764A KR1019920009153A KR920009153A KR930023764A KR 930023764 A KR930023764 A KR 930023764A KR 1019920009153 A KR1019920009153 A KR 1019920009153A KR 920009153 A KR920009153 A KR 920009153A KR 930023764 A KR930023764 A KR 930023764A
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KR
South Korea
Prior art keywords
noise
volume
fan
liquid crystal
temperature
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Application number
KR1019920009153A
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Korean (ko)
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KR100206756B1 (en
Inventor
홍경호
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이헌조
주식회사 금성사
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Priority to KR1019920009153A priority Critical patent/KR100206756B1/en
Publication of KR930023764A publication Critical patent/KR930023764A/en
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Publication of KR100206756B1 publication Critical patent/KR100206756B1/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

본 발명은 엘씨디 프로젝터의 냉각장치에 관한 것으로, 종래 엘씨디 프로젝터의 냉각장치는 공기유입, 배출부위의 온도차에 의해서만 냉각팬의 회전수를 조절함으로써 냉각팬의 회전수가 증가하면 할수록 냉각은 잘되지만 전체세트의 소음이 증가되어 인장적인 세트구성에 어려운 문제점이 있었다.The present invention relates to a cooling device of the LCD projector, the conventional cooling device of the LCD projector by adjusting the rotation speed of the cooling fan only by the temperature difference between the air inlet, outlet portion, the cooling is better as the rotation speed of the cooling fan increases but the whole set There is a problem in the tensile set configuration is difficult to increase the noise.

본 발명은 이러한 문제점을 해결하기 위하여 세트주위의 소음 수준과 비디오 신호의 음량을 검출하여 그 소음이나 음량중 어느 한 부분이라도 어느한계보다 높을 때 냉각팬의 회전속도를 증가시킴으로써 냉각팬의 회전속도를 외부소음이나 음량과 상쇄시켜 세트내의 소음을 느낄 수 없도록 하는 것이다.In order to solve this problem, the present invention detects the noise level around the set and the volume of the video signal, and increases the rotational speed of the cooling fan when any part of the noise or volume is higher than any limit. It is offset by external noise or volume so that the noise in the set cannot be felt.

Description

엘씨디 프로젝터의 냉각장치LCD Projector Cooling System

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명 엘씨디 프로젝터의 냉각장치 구성도, 제3도는 제2도에 따른 팬속도조절부의 상세 회호도, 제4도의 (가)내지 (라)는 제3도에 따른 동작적용도.2 is a configuration diagram of the cooling apparatus of the present invention LCD projector, FIG. 3 is a detailed view of the fan speed control unit according to FIG. 2, and (a) to (d) of FIG.

Claims (2)

빛을 발생하는 광원(1)과, 그 광원(1)에서 발생하는 빛을 스크린(7)측으로 반사시키는 반사경(2)과, 그 반사되는 빛에서 적외선과 자외선을 차단하는 열차단필터(3)와, 그 열차단필터(3)을 통과한 빛을 집광하는 집광렌즈(4)와, 비디오신호를 처리하는 신호처리부(13)와, 그 신호처리부(13)의 출력신호에 의해 액정을 구동하는 액정구동부(14)와, 그 액정구동부(14)의 출력신호에 따라 상기 집광렌즈(4)에서 집광된 빛으로 화상을 형성하는 액정판넬(5)과 그 액정판넬(5)에서 형성된 화상을 상기 스크린(7)에 투사하는 투사렌즈(6)로 구성되는 엘씨디 프로젝터 광학시스템에 있어서, 상기 광원(1) 주위의 더운 공기를 배출하는 배기용팬(11)과, 상기 액정판넬(5)을 냉각하기 위한 흡입용팬(12)과, 상기 배기용팬(11)과 흡입용팬(12)주위의 온도를 검출하는 온도검출기(8),(9)와, 외부소음을 검출하는 소음검출기(15)와 상기 신호처리부(13)에서 처리된 음성신호의 음량을 검출하는 음량 검출부(16)와, 상기 온도검출기(8),(9)에서 검출된 온도데이타와 상기 소음검출부(15), 음량검출부(16)에서 얻은 소음과 음량데이타에 의한 결과에 따라 상기 배기용팬(11)과 흡입용팬(12)의 회전속도를 조절하는 팬속도조절부(10)를 포함하여 구성됨을 특징으로 하는 엘씨디 프로젝터의 냉각장치.A light source 1 for generating light, a reflector 2 for reflecting light generated from the light source 1 toward the screen 7 side, and a heat shield filter 3 for blocking infrared rays and ultraviolet rays from the reflected light And a condenser lens 4 for condensing light passing through the thermal cutoff filter 3, a signal processor 13 for processing a video signal, and an output signal from the signal processor 13 for driving liquid crystals. The liquid crystal panel 14 and the image formed by the liquid crystal panel 5 and the liquid crystal panel 5 which form an image by the light condensed by the condenser lens 4 according to the output signal of the liquid crystal driver 14 are In the LCD projector optical system comprising a projection lens (6) projecting on the screen (7), the exhaust fan (11) for discharging hot air around the light source (1), and the liquid crystal panel (5) Suction fan 12 and temperature detectors 8 and 9 for detecting a temperature around the exhaust fan 11 and suction fan 12. A noise detector 15 for detecting external noise, a volume detector 16 for detecting a volume of the voice signal processed by the signal processor 13, and temperature data detected by the temperature detectors 8 and 9; And a fan speed control unit 10 for adjusting the rotational speeds of the exhaust fan 11 and the suction fan 12 according to the noise and volume data obtained from the noise detection unit 15 and the volume detection unit 16. Cooling device of the LCD projector comprising a. 제1항에 있어서, 팬속도조절부(10)는 상기 온도검출기(8),(9)에서 검출된 배기측온도와 흡입측온도를 입력받아 연산하는 오아게이트(OR1)와, 상기 소음검출기The fan speed control unit 10 of claim 1, the fan speed control unit 10 is an oragate (OR 1 ) for receiving and calculating the exhaust side temperature and the suction side temperature detected by the temperature detector (8), (9), and the noise detector (15)와 음량검출기(16)에서 검출된 외부소음과 음량을 입력받아 연산하는 오아게이트(OR2)와, 상기 오아게이트(OR1),(OR2)의 출력(A),(B)을 입력받아 연산하는 앤드게이트(AND1)와, 그 앤드게이트(AND1)의 출력(C)을 입력받아 상기 배기용팬(11)과 흡입용팬(12)의 회전속도를 조절하는 팬속도조절장치(10-1)로 구성됨을 특징으로 하는 엘씨디 프로젝터의 냉각장치.(15) and the Oa gate (OR 2 ) to receive and calculate the external noise and volume detected by the volume detector 16, and the output (A), (B) of the oragate (OR 1 ), (OR 2 ) receives the output (C) of the aND gate for inputting received operation (aND 1) and that the aND gate (aND 1), fan speed control device for controlling the rotational speed of the exhaust yongpaen 11 and the suction yongpaen 12 Cooling device of the LCD projector, characterized in that consisting of (10-1). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920009153A 1992-05-28 1992-05-28 Cooling apparatus of lcd projector KR100206756B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920009153A KR100206756B1 (en) 1992-05-28 1992-05-28 Cooling apparatus of lcd projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920009153A KR100206756B1 (en) 1992-05-28 1992-05-28 Cooling apparatus of lcd projector

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KR930023764A true KR930023764A (en) 1993-12-21
KR100206756B1 KR100206756B1 (en) 1999-07-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100536035B1 (en) * 1998-12-28 2005-12-12 후지쯔 가부시끼가이샤 Projection type display
KR100945159B1 (en) * 2002-12-09 2010-03-08 엘지전자 주식회사 Method and apparatus for controlling cool of LCD projector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040077117A (en) * 2003-02-28 2004-09-04 엘지전자 주식회사 Method and apparatus for controlling fan rotation speed of display device
KR100686015B1 (en) * 2005-02-21 2007-02-26 엘지전자 주식회사 Apparatus for cooling of video device
CN104142603B (en) * 2014-07-17 2016-01-20 苏州佳世达光电有限公司 A kind of projector and control method thereof
CN107942610A (en) * 2017-11-28 2018-04-20 苏州佳世达光电有限公司 Projector radiating control system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100536035B1 (en) * 1998-12-28 2005-12-12 후지쯔 가부시끼가이샤 Projection type display
KR100945159B1 (en) * 2002-12-09 2010-03-08 엘지전자 주식회사 Method and apparatus for controlling cool of LCD projector

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