KR20030094691A - Back light of direct light type - Google Patents
Back light of direct light type Download PDFInfo
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- KR20030094691A KR20030094691A KR1020020031947A KR20020031947A KR20030094691A KR 20030094691 A KR20030094691 A KR 20030094691A KR 1020020031947 A KR1020020031947 A KR 1020020031947A KR 20020031947 A KR20020031947 A KR 20020031947A KR 20030094691 A KR20030094691 A KR 20030094691A
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- support member
- lamp
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- backlight
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- 238000000034 method Methods 0.000 claims abstract description 19
- 238000007665 sagging Methods 0.000 claims abstract description 13
- 238000009792 diffusion process Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000002210 silicon-based material Substances 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/05—Two-pole devices
- H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
- H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
본 발명에 따르면, 직하 발광형 백라이트가 개시된다. 상기 직하 발광형 백라이트는 상부 프레임과 하부프레임을 포함하는 케이스와; 상기 케이스의 내부에 소정 간격으로 배치된 다수의 형광램프와; 상기 다수의 형광램프 하부에 설치되어 빛을 반사시키는 반사판과; 상기 다수의 형광램프 상부에 설치되어 빛을 확산시키는 확산판과; 상기 다수의 형광램프와 상기 반사판과의 사이에 설치되어 상기 다수의 형광램프를 지지하는 적어도 하나의 램프 지지부재;를 구비한다. 개시된 직하 발광형 백라이트에 의하면, 조립공정이 단순화되어 제조원가가 절감되고, 백라이트를 세웠을 때 램프가 중력방향으로 처지는 것을 방지할 수 있으며, 램프의 지지부재에 의한 휘도의 불균일을 개선할 수 있다.According to the present invention, a direct emitting backlight is disclosed. The direct emission backlight includes a case including an upper frame and a lower frame; A plurality of fluorescent lamps disposed in the case at predetermined intervals; A reflection plate installed below the plurality of fluorescent lamps to reflect light; A diffusion plate installed on the plurality of fluorescent lamps to diffuse light; And at least one lamp support member disposed between the plurality of fluorescent lamps and the reflecting plate to support the plurality of fluorescent lamps. According to the disclosed direct-emitting backlight, the assembly process can be simplified to reduce manufacturing costs, prevent the lamp from sagging in the direction of gravity when the backlight is set up, and improve the unevenness of luminance caused by the support member of the lamp.
Description
본 발명은 직하 발광형 백라이트(back light)에 관한 것으로서, 더욱 상세하게는 형광램프가 중력에 의해 처지는 것을 방지하기 위해 형광램프를 지지하는 지지부재의 구조를 개선한 직하 발광형 백라이트에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct light emitting backlight (back light), and more particularly, to a direct light emitting backlight having improved structure of a support member for supporting a fluorescent lamp in order to prevent the fluorescent lamp from sagging by gravity.
통상적으로, 평판표시장치(flat panel display)는 발광형과 수광형으로 분류되는데, 발광형으로는 음극선관, 전계 발광(Electro Luminescent;EL) 소자, 플라즈마 디스플레이 패널(Plasma Display Panel;PDP) 등이 있고, 수광형으로는 액정 디스플레이(Liquid Crystal Display;LCD) 등이 있다.In general, a flat panel display is classified into a light emitting type and a light receiving type, and the light emitting type includes a cathode ray tube, an electroluminescent (EL) element, a plasma display panel (PDP), and the like. The light receiving type includes a liquid crystal display (LCD) and the like.
상기 액정 디스플레이는 그 자체가 발광하여 화상을 형성하지 못하고 외부로부터 빛을 받아 화상을 형성하는 수광형 소자이므로, 별도의 광원, 예컨대 백라이트를 설치하여 어두운 곳에서는 화상을 관찰할 수 있도록 하고 있다.The liquid crystal display itself is a light-receiving element that emits light and does not form an image, but receives light from the outside to form an image. Thus, a separate light source, for example, a backlight is provided to allow an image to be observed in a dark place.
상기 액정 디스플레이용 백라이트는 형광램프의 설치 형태에 따라 다수의 형광램프를 액정 아래에 평면 배열하는 직하 발광형(direct light type)과 도광판의 측부에 형광램프가 설치되는 가장자리 발광형(edge light type)으로 구분된다. 그리고, 상기 형광램프로는 양끝 전극이 관내에 설치된 냉음극 형광램프(Cold Cathode Fluorescent Lamp;CCFL)와, 양끝 전극이 관외에 설치된 외부전극 형광램프(External Electrode Fluorescent Lamp;EEFL) 등이 사용된다.The backlight for the liquid crystal display includes a direct light type for arranging a plurality of fluorescent lamps under the liquid crystal according to the installation form of the fluorescent lamp and an edge light type for installing the fluorescent lamp on the side of the light guide plate. Separated by. The fluorescent lamp may be a Cold Cathode Fluorescent Lamp (CCFL) having both ends of the electrode installed inside the tube, and an External Electrode Fluorescent Lamp (EEFL) having both ends of the electrode outside the tube.
상기 가장자리 발광형은 일측에서만 광을 조사하는 방식이므로, 요구되는 휘도 조건을 만족할 수 없기 때문에 대형패널에는 그 적용이 부적합하다. 따라서, 최근에는 외부전극을 이용한 직하 발광형의 백라이트에 대한 요구가 점점 커지고 있으며, 이에 대한 연구도 활발히 진행되고 있다.The edge emission type is a method of irradiating light from only one side, and thus the application of the edge emission type is not suitable for a large panel because it cannot satisfy the required luminance condition. Therefore, in recent years, the demand for a direct light emitting backlight using an external electrode is increasing, and research on this is being actively conducted.
도 1에는 상기 직하발광형을 채용한 종래 백라이트의 일례를 나타낸 분리 사시도가 도시되어 있다.1 is an exploded perspective view showing an example of a conventional backlight employing the direct light emitting type.
도시된 바와 같이, 직하 발광형을 채용한 종래 백라이트는 상,하부프레임(41)(42)과, 이 상,하부프레임(41)(42)에 의해 형성된 내부 공간에 설치되어 빛을 발생하며 서로 균일하게 배열된 다수의 형광램프(10)와, 이 형광램프(10)의 상부에 배치되어 형광램프(10)로부터의 빛을 확산시키는 확산판(60)과, 상기 형광램프(10)의 하부에 위치되어 빛을 반사시키는 반사판(50)과, 상기 형광램프(10)를 상기 하부프레임(42)으로부터 소정간격 이격되게 지지하는 램프홀더(30)를 포함한다. 상기 각 형광램프(10)는 외부전극형으로서, 튜브(11)를 포함한다. 그리고, 상기 튜브(11)의 내면에는 형광체층(미도시)이 형성되어 있으며, 상기 튜브(11)의 양 단부에는 전극들(12,13)이 형성되어 있다.As shown, the conventional backlight employing a direct light emission type is installed in the inner space formed by the upper and lower frames 41 and 42, and the upper and lower frames 41 and 42 to generate light and mutually A plurality of fluorescent lamps 10 uniformly arranged, a diffuser plate 60 arranged above the fluorescent lamp 10 to diffuse light from the fluorescent lamp 10, and a lower portion of the fluorescent lamp 10; It includes a reflector plate 50 for reflecting light and a lamp holder 30 for supporting the fluorescent lamp 10 spaced apart from the lower frame 42 by a predetermined distance. Each of the fluorescent lamps 10 is an external electrode type, and includes a tube 11. In addition, a phosphor layer (not shown) is formed on an inner surface of the tube 11, and electrodes 12 and 13 are formed at both ends of the tube 11.
상기와 같이 구성된 종래 직하 발광형 백라이트에 있어서, 상기 형광램프(10)는 종방향의 양 단부만이 램프홀더(30)에 삽입되어 고정되므로, 형광램프(10)는 중력방향으로 처지게 된다. 이와 같은 문제점을 해결하기 위해, 종래에는 각 형광램프(10)에 램프링(lamp ring;20)을 삽입하고, 이렇게 삽입된 램프링(20)이 형광램프(10)를 지지함으로써 형광램프(10)가 중력에 의해 처지는 것을 방지하고 있다.In the conventional direct emission type backlight configured as described above, the fluorescent lamp 10 is inserted into and fixed to the lamp holder 30 in both ends in the longitudinal direction, so that the fluorescent lamp 10 sags in the direction of gravity. In order to solve such a problem, conventionally, a lamp ring 20 is inserted into each fluorescent lamp 10, and the inserted lamp ring 20 supports the fluorescent lamp 10 so that the fluorescent lamp 10 ) Prevents sagging by gravity.
그러나 이러한 종래 직하 발광형 백라이트는 다음과 같은 문제점을 가진다.However, such a conventional direct-emitting backlight has the following problems.
첫째; 각 형광램프마다 램프링을 삽입하여야 하므로, 조립 공정이 복잡해지고, 이 때문에 제조원가가 상승한다.first; Since the lamp ring must be inserted in each fluorescent lamp, the assembly process is complicated, which leads to an increase in manufacturing cost.
둘째; 상기 형광램프로부터 상부로 향하는 빛이 상기 램프링에 의해 차단되어 휘도의 불균일 현상이 발생한다.second; Light directed upward from the fluorescent lamp is blocked by the lamp ring so that a phenomenon of uneven brightness occurs.
셋째; 백라이트가 세워진 경우, 종래 램프링의 구조에 의해서는 형광램프(10)가 중력방향으로 처지는 것을 방지할 수 없다.third; When the backlight is erected, the fluorescent lamp 10 cannot be prevented from sagging in the direction of gravity by the structure of the conventional lamp ring.
본 발명은 상술한 바와 같은 문제점을 해결하기 위한 것으로, 형광램프 지지부재의 조립공정을 단순화하고, 백라이트를 세웠을 때에도 형광램프가 중력방향으로 처지는 것을 방지할 수 있으며, 형광램프의 지지부재에 의해 휘도가 불균일해지는 현상이 발생하지 않는 직하 발광형 백라이트를 제공하는데 그 목적이 있다.The present invention is to solve the problems described above, to simplify the assembly process of the fluorescent lamp support member, and to prevent the fluorescent lamp from sagging in the direction of gravity even when the backlight is set up, the luminance by the support member of the fluorescent lamp It is an object of the present invention to provide a direct-emitting backlight that does not occur unevenly.
도 1은 직하 발광형을 채용한 종래 백라이트의 일례를 나타낸 분리 사시도,1 is an exploded perspective view showing an example of a conventional backlight employing a direct light emission type;
도 2는 본 발명에 따른 직하 발광형 백라이트의 분리 사시도,2 is an exploded perspective view of a direct light emitting backlight according to the present invention;
도 3은 도 2의 Ⅲ-Ⅲ 선에 따른 단면도,3 is a cross-sectional view taken along line III-III of FIG. 2;
도 4a 내지 도 4c는 도 3의 Ⅳ-Ⅳ 선에 따른 단면도,4A to 4C are cross-sectional views taken along line IV-IV of FIG. 3;
도 5 내지 도 7은 램프 지지부재의 다양한 실시예를 나타낸 사시도,5 to 7 is a perspective view showing various embodiments of the lamp support member,
< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>
110...형광램프111...튜브110 fluorescent lamp 111 tube
112,113...전극들120...램프 지지부재112,113 electrodes 120 lamp support member
130...램프홀더140...케이스130 ... lamp holder 140 ... case
141,142...상,하부 프레임150...반사판141,142 Upper and lower frames 150 ...
160...확산판160 ... Diffusion Plate
상기 목적을 달성하기 위한 본 발명의 직하 발광형 백라이트는, 상부 프레임과 하부프레임을 포함하는 케이스와; 상기 케이스의 내부에 소정 간격으로 배치된 다수의 형광램프와; 상기 다수의 형광램프 하부에 설치되어 빛을 반사시키는 반사판과; 상기 다수의 형광램프 상부에 설치되어 빛을 확산시키는 확산판과; 상기 다수의 형광램프와 상기 반사판과의 사이에 설치되어 상기 다수의 형광램프를 지지하는 적어도 하나의 램프 지지부재;를 구비한다.According to an aspect of the present invention, there is provided a direct light emitting backlight including: a case including an upper frame and a lower frame; A plurality of fluorescent lamps disposed in the case at predetermined intervals; A reflection plate installed below the plurality of fluorescent lamps to reflect light; A diffusion plate installed on the plurality of fluorescent lamps to diffuse light; And at least one lamp support member disposed between the plurality of fluorescent lamps and the reflecting plate to support the plurality of fluorescent lamps.
상기 램프 지지부재는 투명한 재질로 형성된 것이 바람직하다. 또한, 상기 램프 지지부재는 상기 형광램프의 튜브보다 경도가 낮고 탄성을 갖는 재질로 형성될 수 있으며, 바람직하게는 실리콘 재질로 형성될 수 있다. 또한, 상기 램프 지지부재의 종단면은 원의 형상일 수 있으며, 사다리꼴의 형상일 수도 있다. 이때 상기 하부 프레임에는 상기 램프 지지부재의 하부가 삽입되는 삽입홈이 형성될 수 있다.The lamp support member is preferably formed of a transparent material. In addition, the lamp support member may be formed of a material having a lower hardness and elasticity than the tube of the fluorescent lamp, and preferably may be formed of a silicon material. In addition, the longitudinal section of the lamp support member may be in the shape of a circle, it may be in the shape of a trapezoid. In this case, an insertion groove into which the lower portion of the lamp support member is inserted may be formed in the lower frame.
또한, 상기 램프 지지부재는 상기 다수의 형광램프와 접촉하는 부위에 상기다수의 형광램프가 상기 램프 지지부재의 종방향으로 처지는 것을 방지하기 위한 처짐방지수단을 구비하는 것이 바람직하다.In addition, the lamp support member is preferably provided with a deflection prevention means for preventing the plurality of fluorescent lamps from sagging in the longitudinal direction of the lamp support member in a portion in contact with the plurality of fluorescent lamps.
여기서, 상기 처짐방지수단은 상기 램프 지지부재의 상면에 반원형으로 오목하게 형성된 오목부인 것이 바람직하다. 그리고, 상기 오목부의 양 가장자리는 상기 램프 지지부재의 상면과 나란하거나, 또는 상기 램프 지지부재의 상면으로부터 융기될 수 있다. 또한, 상기 처짐방지수단은 상기 램프 지지부재의 상면으로부터 수직한 방향으로 돌출된 돌출부재일 수도 있다.Here, the deflection prevention means is preferably a recess formed in a semi-circular concave on the upper surface of the lamp support member. In addition, both edges of the concave portion may be parallel to the upper surface of the lamp support member, or may be raised from the upper surface of the lamp support member. In addition, the deflection prevention means may be a protruding member protruding in a vertical direction from the upper surface of the lamp support member.
이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세하게 설명하도록 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명에 따른 직하 발광형 백라이트의 분리 사시도이고, 도 3은 도 2의 Ⅲ-Ⅲ 선에 따른 단면도이다.2 is an exploded perspective view of a direct-emitting backlight according to the present invention, and FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2.
도면을 참조하면, 본 발명의 바람직한 실시예에 따른 직하 발광형 백라이트는, 상부 프레임(141)과 하부프레임(142)을 포함하는 케이스(140)와, 이 케이스(140)의 내부에 소정 간격으로 배치된 다수의 형광램프(110)와, 상기 형광램프(110) 하부에 설치되어 빛을 반사시키는 반사판(150)과, 상기 형광램프(110) 상부에 설치되어 빛을 확산시키는 확산판(160)을 구비한다.Referring to the drawings, the direct-emitting backlight according to the preferred embodiment of the present invention, the case 140 including the upper frame 141 and the lower frame 142, and the interior of the case 140 at predetermined intervals A plurality of fluorescent lamps 110 disposed thereon, a reflector plate 150 disposed below the fluorescent lamp 110 to reflect light, and a diffusion plate 160 disposed above the fluorescent lamp 110 to diffuse light; It is provided.
상기 형광램프(110)는 밀폐된 방전공간을 가지며 투명한 유전체로 이루어진 튜브(111)와, 유전체 장벽방전을 일으키기 위하여 상기 튜브(111)의 양 단부에 각각 형성된 전극들(112,113)을 포함하며, 도시되지는 않았으나, 상기 튜브(111)의 내면에는 형광체층이 형성되어 있다. 상기 다수의 형광램프(110)는 그 양단부를 지지하는 램프홀더(130)에 의해 하부프레임(142)으로부터 소정간격 이격되어 지지되고 있다. 상기 전극들(112,113)은 서로 병렬 연결되어 외부전원(미도시)과 전기적으로 접속된다.The fluorescent lamp 110 includes a tube 111 made of a transparent dielectric having a sealed discharge space, and electrodes 112 and 113 formed at both ends of the tube 111 to cause a dielectric barrier discharge. Although not, the phosphor layer is formed on the inner surface of the tube 111. The plurality of fluorescent lamps 110 are supported at predetermined intervals from the lower frame 142 by lamp holders 130 supporting both ends thereof. The electrodes 112 and 113 are connected in parallel to each other and electrically connected to an external power source (not shown).
그리고, 상기 형광램프(110)와 반사판(150)과의 사이에는 형광램프(110)와 직교하는 방향으로 설치되어 그 형광램프(110)를 지지하는 적어도 하나의 램프 지지부재(120)가 설치되어 있다. 상기 램프 지지부재(120)는 형광램프(110)가 중력에 의해 중력방향으로 처지는 것을 방지하는 역할을 한다.At least one lamp support member 120 is installed between the fluorescent lamp 110 and the reflecting plate 150 in a direction perpendicular to the fluorescent lamp 110 to support the fluorescent lamp 110. have. The lamp support member 120 serves to prevent the fluorescent lamp 110 from sagging in the direction of gravity by gravity.
여기서, 상기 램프 지지부재(120)는 형광램프(110)로부터 조사된 빛과 반사판(150)으로부터 반사된 빛이 차단되어 휘도가 불균일해지는 것을 방지하기 위하여, 빛이 통과할 수 있는 투명한 재질로 형성되는데, 바람직하게는 투명한 실리콘 재질로 형성될 수 있다. 그리고, 상기 램프 지지부재(120) 재질의 투명한 정도는 형광램프(110)로부터 조사된 빛과 반사판(150)으로부터 반사된 빛이 통과할 수 있을 정도의 투명도를 의미한다.Here, the lamp support member 120 is formed of a transparent material through which light can pass in order to prevent the light irradiated from the fluorescent lamp 110 and the light reflected from the reflector 150 to be uneven brightness. Preferably, it may be formed of a transparent silicone material. In addition, the degree of transparency of the material of the lamp support member 120 refers to the degree of transparency that the light irradiated from the fluorescent lamp 110 and the light reflected from the reflector 150 may pass through.
도 4a 내지 도 4c는 도 3의 Ⅳ-Ⅳ 선에 따른 단면도로서, 도시된 바와 같이, 상기 램프 지지부재(120)는 다양한 종단면을 가질 수 있다. 즉, 상기 램프 지지부재(120)는 원형의 종단면을 가지거나, 사각형 또는 사다리꼴 등과 같은 다각형의 형상을 가질 수 있다. 여기서, 원형의 종단면을 가지는 램프 지지부재(120)는 상하의 구분이 없기 때문에, 조립 공정시 작업의 편의를 제공한다.4A to 4C are cross-sectional views taken along line IV-IV of FIG. 3, and as shown, the lamp support member 120 may have various longitudinal cross-sections. That is, the lamp support member 120 may have a circular longitudinal section or may have a polygonal shape such as a quadrangle or a trapezoid. Here, since the lamp support member 120 having a circular longitudinal section has no upper and lower divisions, it provides convenience of work during the assembly process.
또한, 상기 램프 지지부재(120)의 위치를 고정하기 위해, 상기 램프 지지부재(120)는 접착제에 의해 상기 반사판(150)의 상면에 부착될 수 있다. 또한, 상기하부 프레임(142)에는 램프 지지부재(120)의 하부가 삽입되는 삽입홈(142a)을 형성할 수도 있다. 이와 같이 하부 프레임(142)에 램프 지지부재(120)의 하부를 삽입함으로써 조립 작업의 편의를 제공하고, 백라이트의 운반할 때 또는 백라이트가 세워진 때에도 램프 지지부재(120)는 움직이지 않고 하부 프레임(142)에 고정되어 안정되게 형광램프(110)의 중력에 의한 처짐을 방지하게 된다.In addition, in order to fix the position of the lamp support member 120, the lamp support member 120 may be attached to the upper surface of the reflecting plate 150 by an adhesive. In addition, the lower frame 142 may form an insertion groove 142a into which the lower portion of the lamp support member 120 is inserted. By inserting the lower portion of the lamp support member 120 in the lower frame 142 as described above, convenience of assembly work is provided, and the lamp support member 120 does not move even when the backlight is carried or when the backlight is set up. It is fixed to 142 to stably prevent the sag due to gravity of the fluorescent lamp 110.
한편, 도 5에 도시된 바와 같이, 직하형 백라이트를 세웠을 때, 형광램프(110)는 램프 지지부재(120)의 종방향으로 중력을 받아 처지게 된다. 이와 같이 형광램프(110)가 램프 지지부재(120)의 종방향으로 중력을 받아 처지는 것을 감소시키기 위해, 램프 지지부재(120)는 형광램프(110)의 튜브(111)보다 경도가 낮고 탄성을 갖는 재질로 형성된 것이 바람직하다. 이러한 재질로는 투명한 고무나 실리콘 등을 사용할 수 있다.On the other hand, as shown in Figure 5, when the direct type backlight, the fluorescent lamp 110 is subjected to gravity in the longitudinal direction of the lamp support member 120 sag. In order to reduce the deflection of the fluorescent lamp 110 in the longitudinal direction of the lamp support member 120, the lamp support member 120 has a lower hardness and elasticity than the tube 111 of the fluorescent lamp 110 It is preferable to be formed of a material having. As such a material, transparent rubber or silicone may be used.
또한, 상기 램프 지지부재(120)는 형광램프(110)가 램프 지지부재(120)의 종방향으로 처지는 것을 방지하기 위해, 형광램프(110)와 접촉하는 부위에 처짐방지수단을 구비한다.In addition, the lamp support member 120 is provided with a deflection prevention means at a portion in contact with the fluorescent lamp 110 to prevent the fluorescent lamp 110 from sagging in the longitudinal direction of the lamp support member 120.
상기 처짐방지수단으로는, 도 5에 도시된 바와 같이, 램프 지지부재(120)의 상면에 반원형의 옥목부(121)를 형성하는 것이 바람직하다. 여기서, 상기 오목부(121)의 양 가장자리(121a)는 램프 지지부재(120)의 상면과 나란하다. 한편, 상기 오목부(121)의 양 가장자리(121a)는, 도 6에 도시된 바와 같이, 램프 지지부재(120)의 상면으로부터 융기될 수도 있다.As the deflection prevention means, as shown in FIG. 5, it is preferable to form a semicircular round neck portion 121 on the upper surface of the lamp support member 120. Here, both edges 121a of the recess 121 are parallel to the upper surface of the lamp support member 120. Meanwhile, both edges 121a of the recess 121 may be raised from the upper surface of the lamp support member 120 as shown in FIG. 6.
또한, 상기 처짐방지수단은, 도 7에 도시된 바와 같이, 램프 지지부재(120)의 상면으로부터 수직한 방향으로 돌출된 돌출부재(122)일 수도 있다.In addition, the deflection preventing means may be a protruding member 122 protruding in a vertical direction from the upper surface of the lamp support member 120, as shown in FIG.
상기와 같이 구성된 본 발명의 실시예에 따른 직하 발광형 백라이트의 작용을 첨부 도면을 참조하여 설명하면 다음과 같다.Referring to the accompanying drawings, the operation of the direct-emitting backlight according to the embodiment of the present invention configured as described above is as follows.
먼저, 도 2에 도시된 바와 같이, 백라이트가 눕혀져 있을 때, 형광램프(110)의 하부에 설치된 램프 지지부재(120)는 형광램프(110)가 중력방향으로 처지는 것을 방지한다.First, as shown in FIG. 2, when the backlight is lying down, the lamp support member 120 installed below the fluorescent lamp 110 prevents the fluorescent lamp 110 from sagging in the gravity direction.
다음으로, 도 5 내지 도 7에 도시된 바와 같이, 백라이트가 세워졌을 때, 램프 지지부재(120)에 구비된 처짐방지수단은 형광램프(110)가 램프 지지부재(120)의 종방향으로 중력에 의해 처지는 것을 방지한다.Next, as illustrated in FIGS. 5 to 7, when the backlight is set up, the deflection prevention means provided in the lamp support member 120 includes a fluorescent lamp 110 for gravity in the longitudinal direction of the lamp support member 120. To prevent sagging by
한편, 도 4a 내지 도 4c에 도시된 바와 같이, 하부 프레임(142)에 형성된 삽임홈(142a)에 램프 지지부재(120)의 하부를 삽입함으로써, 백라이트의 운반할 때 또는 백라이트가 세워진 때에도 램프 지지부재(120)는 움직이지 않고 하부 프레임(142)에 고정되어 안정되게 형광램프(110)가 중력에 의해 처지는 것을 방지할 수 있다.On the other hand, as shown in Figure 4a to 4c, by inserting the lower portion of the lamp support member 120 in the insertion groove 142a formed in the lower frame 142, the lamp support even when carrying the backlight or when the backlight is standing up The member 120 may be fixed to the lower frame 142 without moving to stably prevent the fluorescent lamp 110 from sagging by gravity.
상기 본 발명의 실시예는 외부전극을 이용하는 외부전극 형광램프를 채용한 직하 발광형 백라이트에 대해 설명하였으나. 이는 예시적인 것으로서, 냉음극 형광램프와 같이 내부전극을 이용하는 직하 발광형 백라이트에도 동일하게 적용될 수 있다.The embodiment of the present invention has been described with respect to the direct emission type backlight employing an external electrode fluorescent lamp using an external electrode. This is an example and may be equally applied to a direct emission type backlight using internal electrodes such as a cold cathode fluorescent lamp.
이상에서 설명한 바와 같은 본 발명의 직하 발광형 백라이트에 의하면 다음과 같은 효과를 얻을 수 있다.According to the direct-emitting backlight of the present invention as described above, the following effects can be obtained.
첫째; 형광램프의 중력에 의한 처짐을 방지하기 위하여 각 형광램프마다 램프링을 삽입하는 종래의 방식 대신에, 램프 지지부재를 형광램프 하부에 설치함으로써 조립 공정이 단순화 되며, 이 때문에 제조원가가 절감된다.first; Instead of the conventional method of inserting a lamp ring for each fluorescent lamp in order to prevent the deflection due to gravity of the fluorescent lamp, the assembly process is simplified by installing a lamp support member under the fluorescent lamp, thereby reducing manufacturing costs.
둘째; 램프 지지부재가 형광램프의 하부에 설치되어 형광램프로부터 상부로 조사되는 빛이 램프 지지부재에 의해 차단되지 않으므로, 램프 지지부재에 의한 휘도의 불균일 현상이 발생하지 않는다.second; Since the lamp support member is installed under the fluorescent lamp and the light irradiated from the fluorescent lamp to the top is not blocked by the lamp support member, the unevenness of the luminance caused by the lamp support member does not occur.
셋째; 백라이트가 세워진 경우에도 형광램프가 중력방향으로 처지는 현상을 효과적으로 방지할 수 있다.third; Even when the backlight is standing up, it is possible to effectively prevent the fluorescent lamp from sagging in the direction of gravity.
본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 청구범위의 기술적 사상에 의해 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020020031947A KR20030094691A (en) | 2002-06-07 | 2002-06-07 | Back light of direct light type |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20030094691A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7401968B2 (en) | 2004-09-03 | 2008-07-22 | Samsung Electronic Co., Ltd. | Backlight assembly with improved strength and display device having the same |
| CN101576684A (en) * | 2008-05-05 | 2009-11-11 | 冠捷投资有限公司 | Direct Type Backlight Module |
| US7637641B2 (en) | 2005-02-04 | 2009-12-29 | Samsung Electronics Co., Ltd. | Backlight assembly and liquid crystal display device having the same |
| KR100971648B1 (en) * | 2008-09-17 | 2010-07-22 | 고충훈 | Lighting equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200206594Y1 (en) * | 2000-07-12 | 2000-12-01 | 김근배 | High bright backlight for lcd |
| JP2001210126A (en) * | 2000-01-31 | 2001-08-03 | Sharp Corp | Lamp holder and back light device |
| JP2001266634A (en) * | 2000-03-16 | 2001-09-28 | Ohtsu Tire & Rubber Co Ltd :The | Reflector for back light and back light |
| KR20030020060A (en) * | 2001-08-29 | 2003-03-08 | 삼성전자주식회사 | Liquid crystal display device |
| KR20030038970A (en) * | 2001-11-09 | 2003-05-17 | 엘지.필립스 엘시디 주식회사 | Back light |
| KR20030093845A (en) * | 2002-06-05 | 2003-12-11 | 삼성전자주식회사 | Back light assembly and liquid crystal display device using the same |
-
2002
- 2002-06-07 KR KR1020020031947A patent/KR20030094691A/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001210126A (en) * | 2000-01-31 | 2001-08-03 | Sharp Corp | Lamp holder and back light device |
| JP2001266634A (en) * | 2000-03-16 | 2001-09-28 | Ohtsu Tire & Rubber Co Ltd :The | Reflector for back light and back light |
| KR200206594Y1 (en) * | 2000-07-12 | 2000-12-01 | 김근배 | High bright backlight for lcd |
| KR20030020060A (en) * | 2001-08-29 | 2003-03-08 | 삼성전자주식회사 | Liquid crystal display device |
| KR20030038970A (en) * | 2001-11-09 | 2003-05-17 | 엘지.필립스 엘시디 주식회사 | Back light |
| KR20030093845A (en) * | 2002-06-05 | 2003-12-11 | 삼성전자주식회사 | Back light assembly and liquid crystal display device using the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7401968B2 (en) | 2004-09-03 | 2008-07-22 | Samsung Electronic Co., Ltd. | Backlight assembly with improved strength and display device having the same |
| US7637641B2 (en) | 2005-02-04 | 2009-12-29 | Samsung Electronics Co., Ltd. | Backlight assembly and liquid crystal display device having the same |
| CN101576684A (en) * | 2008-05-05 | 2009-11-11 | 冠捷投资有限公司 | Direct Type Backlight Module |
| CN101576684B (en) * | 2008-05-05 | 2010-12-08 | 冠捷投资有限公司 | Direct Type Backlight Module |
| KR100971648B1 (en) * | 2008-09-17 | 2010-07-22 | 고충훈 | Lighting equipment |
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