KR20040045939A - The method for controlling back-light of lcd screen equipped on a refrigerator front control panel - Google Patents

The method for controlling back-light of lcd screen equipped on a refrigerator front control panel Download PDF

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Publication number
KR20040045939A
KR20040045939A KR1020020073694A KR20020073694A KR20040045939A KR 20040045939 A KR20040045939 A KR 20040045939A KR 1020020073694 A KR1020020073694 A KR 1020020073694A KR 20020073694 A KR20020073694 A KR 20020073694A KR 20040045939 A KR20040045939 A KR 20040045939A
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South Korea
Prior art keywords
lcd screen
refrigerator
illuminance
backlight
door
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KR1020020073694A
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Korean (ko)
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KR100472759B1 (en
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전용덕
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주식회사 대우일렉트로닉스
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Priority to KR10-2002-0073694A priority Critical patent/KR100472759B1/en
Publication of KR20040045939A publication Critical patent/KR20040045939A/en
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Publication of KR100472759B1 publication Critical patent/KR100472759B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D27/00—Lighting arrangements
    • F25D27/005—Lighting arrangements combined with control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2327/00—Lighting arrangements not provided for in other groups of this subclass
    • F25D2327/001—Lighting arrangements on the external side of the refrigerator, freezer or cooling box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/36—Visual displays
    • F25D2400/361—Interactive visual displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE: A backlight control method of an LCD screen mounted to a front control panel of a refrigerator is provided to reduce waste of electricity by selectively turning on/off a light of the LCD screen. CONSTITUTION: A backlight control method of an LCD screen mounted to a front control panel of a refrigerator comprises steps of sensing the outer luminous intensity of the refrigerator by an optical sensor mounted to the refrigerator and determining whether the sensed luminous intensity is under first predetermined luminous intensity(S210); checking the opening and shutting state of a door if the sensed luminous intensity is over the first predetermined luminous intensity and turning on a backlight of the LCD screen if the sensed luminous intensity is under the first predetermined luminous intensity(S220); deciding whether the luminous intensity sensed by the optical sensor reaches second predetermined luminous intensity while the backlight of the LCD screen is turned on(S230,S240); and checking the opening and shutting state of the door, and turning off the backlight of the LCD screen if the door is shut and turning off the backlight of the LCD screen after the passage of predetermined time if the door is opened(S260,S270).

Description

냉장고 프론트 제어 패널에 구비된 엘씨디 화면의 배경 조명 제어 방법{THE METHOD FOR CONTROLLING BACK-LIGHT OF LCD SCREEN EQUIPPED ON A REFRIGERATOR FRONT CONTROL PANEL}TECHNICAL TECHNICAL FIELD OF THE INVENTION Controlling the Backlight of the LCD Screen in the Refrigerator Front Control Panel {THE METHOD FOR CONTROLLING BACK-LIGHT OF LCD SCREEN EQUIPPED ON A REFRIGERATOR FRONT CONTROL PANEL}

본 발명은 냉장고 프론트 제어 패널에 구비된 LCD화면의 배경 조명 제어 방법에 관한 것으로, 특히 냉장고 도어에 장착된 프론트 제어 패널의 LCD 조명이 냉장고 주위의 조도에 따라 제어되게 한 냉장고 프론트 제어 패널에 구비된 LCD화면의 배경 조명 제어 방법에 관한 것이다.The present invention relates to a method for controlling the backlight of an LCD screen provided in a refrigerator front control panel. More particularly, the present invention relates to a refrigerator front control panel which allows the LCD lighting of the front control panel mounted on the refrigerator door to be controlled according to the illuminance around the refrigerator. It relates to a method of controlling the backlight of the LCD screen.

최근 들어, 실내의 가전 제품들 중 1개의 가전 제품이 인터넷과 연결된 서버 역할을 하고 이외의 가전 제품이 상기 서버 가전 제품과 연결되어, 인터넷을 통해 실내의 가전제품을 제어할 수 있는 홈 오토메이션(HOME AUTOMATION)이 공지되었다. 또한, 상기 홈 오토메이션에 따르면, 상기 서버 가전 제품은 인터넷과 연결되고 실내의 가전제품뿐만 아니라 조명 또는 음향 기기와 연결됨으로써 사용자의 필요에 따라 인터넷을 통해 실내에 조명을 켜거나 각각의 가전제품을 구동할 수 있게 되었다. 더욱이, 상기 서버로 사용되는 가전 제품은 접근 용이성을 고려하여 주로 냉장고가 사용되는데, 이들 냉장고에는 이외의 가전 제품의 가동 정보를 화면에 출력하며, 최근들어서는 냉장고의 운전 상태를 전자적으로 제어하고 냉장고 운전 정보를 상기 화면을 통해 표시하였다.Recently, one home appliance in the home appliance acts as a server connected to the Internet, and other home appliances are connected to the server appliance, so that home automation can be controlled through the Internet. AUTOMATION) is known. In addition, according to the home automation, the server household appliances are connected to the Internet and connected to lighting or sound equipment as well as indoor appliances in the room, according to the user's needs to turn on the lights in the room or to drive the respective appliances I can do it. In addition, the home appliance used as the server is mainly used in the refrigerator in consideration of accessibility, these refrigerators output the operation information of the other home appliances on the screen, and recently, the operation state of the refrigerator is electronically controlled and the refrigerator operation Information was displayed on the screen.

상기 냉장고는 냉장고 고내의 냉기가 누설되지 않게 하되 필요시 열 수 있도록 냉장고 캐비넷에 도어가 개폐 가능하게 장착되며, 상기 냉장고 도어의 전면에 장착된 FCP(FRONT CONTROLL PANEL), 즉, 프론트 제어 패널은 냉장고의 냉장, 냉동절환스위치 및 제상스위치, 온도설정스위치 등의 각종 기능스위치와 그에 관련된 조작버튼이 설치되어 사용자가 이를 통해 냉장고의 도어를 열지 않은 상태에서 냉장고의 운전상태를 임의로 설정할 수 있게 하고, 냉장고 운전 상태를 표시하기 위해 LCD 화면이 장착되엇다.The refrigerator is installed in the refrigerator cabinet so that the cold air inside the refrigerator does not leak, but can be opened when necessary, the front control panel (FCP) mounted on the front of the refrigerator door, that is, the front control panel is a refrigerator Various function switches such as refrigeration, freezing switch, defrost switch, temperature setting switch, and related operation buttons are installed so that the user can arbitrarily set the operation state of the refrigerator without opening the door of the refrigerator. LCD screen is mounted to display the operation status.

상기 LCD 화면은 도어가 개폐됨 따라 조명이 온(ON)/ 오프(OFF)되어 사용자가 LCD 화면을 보면서 조작하기 용이하게 하였다. 더욱이, 이러한 LCD 화면에는 어두운 실내에서 사용자의 편의를 위해 조명등이 제공되는데 이러한 LCD 조명등은 냉장고 도어가 열리면 온 상태로 되어 설정 시간 동안 LCD 화면이 조명하였다.The LCD screen is illuminated (ON) / off (OFF) as the door is opened and closed so that the user can easily manipulate the LCD screen. In addition, the LCD screen is provided with a light for the user's convenience in a dark room, which is turned on when the refrigerator door is opened, the LCD screen is illuminated for a set time.

그러나, 상술된 바와 같이 프론트 제어 패널은 냉장고 도어가 열릴 경우 조명이 켜짐으로써, 주위가 밝은 상태에서 조명이 동작되어 전기를 과다 소모하고 어두운 실내에서는 냉장고 도어를 열기 전에 프로트 제어 패널의 LCD 화면에 표시된 정보를 확인하기 곤란한 문제가 있었다.However, as described above, the front control panel is turned on when the refrigerator door is opened, so that the lighting is operated in a bright state, consuming too much electricity, and displayed in the LCD screen of the front control panel before opening the refrigerator door in a dark room. There was a problem that made it difficult to verify the information.

따라서, 본 발명은 LCD 화면의 조명등이 주위 조도에 따라 선택적으로 온, 오프되어 전기 소모를 줄일 수 있는 LCD 화면의 배경 조명의 제어 방법을 제공하는 데 그 목적이 있다.Accordingly, an object of the present invention is to provide a method of controlling the backlight of an LCD screen, in which an illumination lamp of the LCD screen is selectively turned on and off according to ambient illumination, thereby reducing electricity consumption.

도 1은 본 발명에 따라 구성된 프론트 제어 패널이 장착된 냉장고가 도시된 사시도.1 is a perspective view of a refrigerator equipped with a front control panel constructed in accordance with the present invention;

도 2는 본 발명에 따라 프론트 제어 패널에 구비된 LCD 화면의 배경 조명을 제어하기 위한 흐름도.2 is a flow chart for controlling the backlight of the LCD screen provided in the front control panel according to the present invention.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10: 냉장고 캐비넷 20: 냉장고 도어10: refrigerator cabinet 20: refrigerator door

30: 프론트 제어 패널 31: LCD 화면30: Front control panel 31: LCD screen

32: 기능스위치 33: 광센서32: function switch 33: light sensor

상기된 바와 같은 목적을 달성하도록 본 발명에 따른 냉장고 프론트 제어 패널에 구비된 LCD 화면의 배경 조명을 제어하기 위한 방법은 냉장고 외측에 장착된 광센서에 의해 냉장고 외부 조도를 감지하며 그 감지 조도가 제 1설정 조도이하인지 여부를 체크하는 단계, 상기 감지 조도가 상기 제 1설정 조도 이상이면 도어의 개폐 여부를 체크하되, 이하이면 상기 LCD 배경 조명등이 점등되는 단계, 상기 LCD 배경 조명등이 점등된 상태에서 상기 광센서에 의해 감지된 조도가 제 2 설정 조도에 도달하는지의 여부를 체크하는 단계, 상기 단계에서 제 2 설정 조도에 도달하면 도어의 개폐 여부를 체크하여 도어가 닫혔으면 LCD 배경 조명등을 소등시키되 도어가 열렸으면 설정 시간 경과후 LCD 배경 조명등을 소등시키는 단계를 포함하여 구성된다.Method for controlling the backlight of the LCD screen provided in the refrigerator front control panel according to the present invention to achieve the object as described above is to detect the external illuminance of the refrigerator by an optical sensor mounted on the outside of the refrigerator and the detected illuminance Checking whether the door is opened or closed if the detected illuminance is greater than or equal to the first set illuminance, but if less than the set illuminance, the LCD backlight illuminates; Checking whether or not the illuminance detected by the light sensor reaches the second set illuminance; if the second set illuminance is reached in this step, checking whether the door is opened or closed; turning off the LCD backlight when the door is closed; And turning off the LCD backlight after a set time has elapsed if the door has been opened.

이하에서는 본 발명을 도면을 참조하여 더욱 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.

도 1은 본 발명의 프론터 제어 패널이 장착된 냉장고의 사시도이다. 냉장고는 냉장고 캐비넷에 냉장고 도어(20)가 선회가능하게 장착되며 상기 냉장고 도어의 전면부에는 FCP, 즉 프론트 제어 패널(30, Front Control Panel)이 장착되는데, 상기 프론트 제어 패널은 냉장고의 운전 상태를 표시하기 위한 LCD 화면(31)과, 냉장고의 냉장 냉동 절환 스위치 및 제상 스위치 또는 온도설정스위치를 포함하는 기능스위치(32)와, 광센서(33)가 설치된다.1 is a perspective view of a refrigerator equipped with a front control panel of the present invention. The refrigerator is rotatably mounted to the refrigerator door 20 in the refrigerator cabinet, and the front part of the refrigerator door is equipped with an FCP, that is, a front control panel 30. The front control panel controls the operation state of the refrigerator. An LCD screen 31 for displaying, a function switch 32 including a refrigerator freezer switching switch and a defrost switch or a temperature setting switch of the refrigerator, and an optical sensor 33 are provided.

상기 구성에 의해, 냉장고는 LCD화면(31)을 통해 냉장고 운전 상태를 표시하는데, 상기 LCD화면에 표시된 냉장고 운전 정보를 사용자가 어두운 실내에서도 확인할 수 있도록 백 라이트(BACK LIGHT) 또는 배경 조명등(미도시)이 설치된다. 한편, 냉장고 외측면에 바람직하게는 프론트 제어 패널의 일측에 광센서(33)가 설치되는데 상기 광센서는 실내의 조도를 감지하여 그 감지조도가 설정조도 이하일 경우 상기 LCD화면(31)의 배경 조명등을 온(ON)시킨다.By the above configuration, the refrigerator displays the refrigerator operation state through the LCD screen 31, and the back light or the back light (not shown) so that the user can check the refrigerator operation information displayed on the LCD screen even in a dark room. ) Is installed. On the other hand, an optical sensor 33 is preferably installed on one side of the front control panel on the outer surface of the refrigerator, and the optical sensor detects illuminance of the room, and when the detected illuminance is less than a set illuminance, a background light of the LCD screen 31 is provided. Turn ON.

도 2는 본 발명에 따라 LCD화면의 배경 조명을 제어하기 위한 흐름도이다.2 is a flowchart for controlling the backlight of the LCD screen according to the present invention.

배경 조명의 제어 과정을 살펴보면, 광센서가 냉장고 외부의 조도를 감지하며 제어 유닛은 상기 감지 조도가 제 1설정 조도보다 낮은지의 여부를 체크한다(S210). 이때, 상기 제 1 설정 조도는 사용자가 LCD화면에 표시된 정보를 육안으로 확인 가능한 조도 예를 들면, 5룩스(LUX)로 정해지는 것이 바람직하다. 한편, 감지 조도가 제 1설정 조도보다 낮을 경우, LCD 화면에 표시된 냉장고 운전정보를 확인할 수 있도록 LCD 화면의 배경 조명등이 켜지며(S220), 이와 동시에 광센서는 지속적으로 냉장고 외부의 조도를 감지하여 제어 유닛은 그 감지 조도가 상기 제 1설정 조도보다 높게 설정된 제 2 설정 조도이상 인지의 여부를 체크하는데(S230). 상기 동작에 의해 감지 조도가 제 2 설정 조도에 도달하게 되면 도어의 개폐 상태를 체크하여(S240) 도어가 닫힌 상태이면 LCD 화면의 배경 조명등을 오프 동작시킨다(S270).Looking at the control of the backlight, the light sensor detects the illuminance of the outside of the refrigerator and the control unit checks whether the detected illuminance is lower than the first set illuminance (S210). In this case, the first setting illuminance is preferably set to an illuminance, for example, 5 lux (LUX) that allows the user to visually check the information displayed on the LCD screen. On the other hand, when the detected illuminance is lower than the first set illuminance, the backlight of the LCD screen is turned on to check the refrigerator operation information displayed on the LCD screen (S220), and at the same time, the optical sensor continuously detects the illuminance of the outside of the refrigerator. The control unit checks whether the detected illuminance is greater than or equal to the second set illuminance set higher than the first set illuminance (S230). When the detected illuminance reaches the second set illuminance according to the operation, the open / closed state of the door is checked (S240). If the door is closed, the backlight of the LCD screen is turned off (S270).

이때, 짧은 주기 내에서 조도의 변화에 따라 LCD 화면의 배경 조명등이 온, 오프 동작을 반복함으로써 깜빡거림이 발생되는 것을 방지하도록 상기 제 2설정 조도는 제 1 설정 조도와 상이하게 되는 것이 바람직하며, 예를 들면 상술된 바와 같이 제 1설정 조도를 5룩스, 제 2 설정 조도를 16룩스로 설정하는 것이 바람직하다.In this case, it is preferable that the second setting illuminance is different from the first setting illuminance so as to prevent flickering by repeating the on / off operation of the backlight of the LCD screen according to the change of the illuminance within a short period. For example, as described above, it is preferable to set the first set roughness to 5 lux and the second set roughness to 16 lux.

또한, 도어가 열려 있을 경우 LCD화면의 배경 조명을 점등된 상태에서 설정 시간이 경과했는지 여부를 체크하여(S260) 배경 조명을 소등하게 된다(S270).In addition, when the door is open, the backlight is turned off by checking whether the setting time has elapsed while the backlight of the LCD screen is turned on (S260).

한편, 상기 설정 시간은 예를 들면, 10초, 30초, 또는 1분으로 설정될 수 있다. 더욱이, 사용자가 프론트 제어 패널의 기능 스위치를 조작하거나 냉장고 운전 상태를 확인하기 용이하게 하기 위하여, 배경 조명등은 도어가 개폐되거나 프런트 제어 패널의 기능 스위치가 조작되는 시점으로부터 경과시간이 설정시간에 도달할 때까지 점등된 상태로 있는 것이 바람직하다.On the other hand, the set time may be set to, for example, 10 seconds, 30 seconds, or 1 minute. Furthermore, in order to make it easier for the user to operate the function switch of the front control panel or to check the refrigerator operation status, the background light may have elapsed time reaching the set time from the time when the door is opened or the function switch of the front control panel is operated. It is desirable to stay in the lit state until.

따라서, 본 발명에 따르면 LCD 화면의 배경 조명은 냉장고 외부 조도가 제 1설정 조도 이하일 경우 점등되므로 어두운 실내 특히, 야간에 프론트 패널의 기능스위치를 조작하거나 LCD 화면에 표시된 정보를 확인하기 용이하며, LCD 화면을 조명의 도움없이 확인 가능한 경우에는 LCD 배경 조명이 소등됨으로써 전기 소모의 낭비를 방지할 수 있는 효과가 있다.Therefore, according to the present invention, since the backlight of the LCD screen is turned on when the external illuminance of the refrigerator is less than or equal to the first set illuminance, it is easy to operate a function switch of the front panel or check the information displayed on the LCD screen in a dark room, especially at night. When the screen can be checked without the help of lighting, the LCD backlight is turned off, thereby preventing the waste of electricity.

Claims (1)

냉장고 도어의 전면에 장착된 프론트 제어 패널에 구비된 LCD 화면이 배경 조명등으로 조명되게 하는 LCD화면의 배경 조명 제어 방법에 있어서,In the method of controlling the backlight of the LCD screen so that the LCD screen provided in the front control panel mounted on the front of the refrigerator door is illuminated by the backlight; 냉장고 외측에 장착된 광센서에 의해 냉장고 외부 조도를 감지하며 그 감지 조도가 제 1설정 조도이하인지 여부를 체크하는 단계;Detecting an external illuminance of the refrigerator by an optical sensor mounted to the outside of the refrigerator and checking whether the detected illuminance is less than or equal to the first predetermined illuminance; 상기 감지 조도가 상기 제 1설정 조도 이상이면 도어의 개폐 여부를 체크하되, 이하이면 상기 LCD 배경 조명등이 점등되는 단계;Checking whether the door is opened or closed when the detected illuminance is greater than or equal to the first set illuminance, and when the sensing illuminance is less than the first illuminance, the LCD backlight; 상기 LCD 배경 조명등이 점등된 상태에서 상기 광센서에 의해 감지된 조도가 제 2 설정 조도에 도달하는지의 여부를 체크하는 단계;Checking whether the illuminance sensed by the light sensor reaches a second set illuminance while the LCD backlight is on; 상기 단계에서 제 2 설정 조도에 도달하면 도어의 개폐 여부를 체크하여 도어가 닫혔으면 LCD 배경 조명등을 소등시키되 도어가 열렸으면 설정 시간 경과후 LCD 배경 조명등을 소등시키는 단계를 포함하여 구성된 것을 특징으로 하는 프론트 제어 패널에 구비된 LCD화면의 배경 조명 제어 방법When the second setting illuminance is reached in the above step, the door is opened or closed, and if the door is closed, the LCD backlight is turned off. If the door is opened, the LCD backlight is turned off after the set time has elapsed. Background lighting control method of LCD screen provided in front control panel
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