JPH07168025A - Flat light source apparatus - Google Patents
Flat light source apparatusInfo
- Publication number
- JPH07168025A JPH07168025A JP5341837A JP34183793A JPH07168025A JP H07168025 A JPH07168025 A JP H07168025A JP 5341837 A JP5341837 A JP 5341837A JP 34183793 A JP34183793 A JP 34183793A JP H07168025 A JPH07168025 A JP H07168025A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent tube
- light
- light source
- light guide
- mirror
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 3
- 239000003973 paint Substances 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 238000004544 sputter deposition Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、平面型光源装置に関
し、特に平面型表示装置用の平面型光源装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel light source device, and more particularly to a flat panel light source device for a flat panel display device.
【０００２】[0002]
【従来の技術】従来の平面型光源装置は、図２に示すよ
うに光源装置の側面に配置された蛍光管１の光をその周
囲に蛍光管１を囲むように配設された反射カバー５によ
って反射させて導光体３の端面に入射させている。端面
より入射された光は導光体３内部での乱反射および反射
シート４によって反射シート４の反対側から平面状に放
射される。これにより、面状光源を実現している。2. Description of the Related Art In a conventional flat type light source device, as shown in FIG. 2, light from a fluorescent tube 1 disposed on the side surface of the light source device is arranged around the reflection cover 5 so as to surround the fluorescent tube 1. It is reflected by and is made incident on the end face of the light guide 3. The light incident from the end face is diffusely reflected inside the light guide 3 and is radiated in a plane from the opposite side of the reflection sheet 4 by the reflection sheet 4. This realizes a planar light source.
【０００３】[0003]
【発明が解決しようとする課題】この従来の平面型光源
装置では、反射シートおよび反射カバーとして、一般的
にアルミ、鉄等の金属製の反射部材が用いられている。
これは、鏡面加工しやすいことや、ある程度の強度があ
るため、反射する曲面部の変形防止が可能なためであ
る。しかしながら反射部材の重量は光源装置の発光部面
積が大きくなるに従って増えていく傾向にあり、重量低
減化の障害となる。また、反射部材を導光体に取り付け
る作業工数や平面型光源装置の製造コストにおいても無
駄がある等の問題点があった。本発明の目的は、このよ
うな従来の問題点を解決して、軽重量で製造コストの低
減化された平面型光源装置を提供することを目的とす
る。In this conventional flat type light source device, a reflecting member made of metal such as aluminum or iron is generally used as the reflecting sheet and the reflecting cover.
This is because it is easy to perform mirror-finishing and has some strength, so that it is possible to prevent deformation of the curved surface portion that reflects light. However, the weight of the reflecting member tends to increase as the area of the light emitting portion of the light source device increases, which is an obstacle to weight reduction. Further, there is a problem in that the number of working steps for attaching the reflecting member to the light guide body and the manufacturing cost of the flat light source device are wasteful. An object of the present invention is to solve the above-mentioned conventional problems and to provide a flat-type light source device that is lightweight and has a reduced manufacturing cost.
【０００４】[0004]
【課題を解決するための手段】本発明の平面型光源装置
は、導光体と、該導光体の側面に配置された蛍光管とが
前記導光体の光出射面を残して筺体内に保持された平面
型光源装置であって、前記筺体の前記蛍光管包囲面が鏡
面処理され、反射部材として機能することを特徴とする
平面型光源装置、および導光体と、該導光体の側面に配
置された蛍光管とが前記導光体の光出射面を残して筺体
内に保持された平面型光源装置であって、前記筺体の前
記導光体対峙面および前記蛍光管包囲面が鏡面処理さ
れ、反射部材として機能することを特徴とする平面型光
源装置である。According to the flat light source device of the present invention, a light guide and a fluorescent tube disposed on a side surface of the light guide leave a light emitting surface of the light guide inside the housing. A flat light source device, characterized in that the fluorescent tube surrounding surface of the housing is mirror-finished and functions as a reflecting member, and a light guide body and the light guide body. A planar light source device in which a fluorescent tube disposed on the side surface of the light guide body is retained in the housing leaving a light emitting surface of the light guide body, the light guide body facing surface of the housing and the fluorescent tube surrounding surface. Is a mirror-finished surface and functions as a reflecting member.
【０００５】[0005]
【作用】本発明においては、筺体の蛍光体包囲面、また
は蛍光体包囲面と導光体対峙面の両方を鏡面処理して反
射機能をもたせているので、従来用いられてきた反射カ
バーや反射シートなどの反射部材が不要となり、部品点
数が少なくなって装置信頼性や部材コストが改善され
る。In the present invention, since the fluorescent material surrounding surface of the housing or both the fluorescent material surrounding surface and the light guide facing surface are mirror-finished to have a reflecting function, the reflecting cover and the reflecting surface which have been conventionally used are used. Since a reflecting member such as a sheet is unnecessary, the number of parts is reduced, and the device reliability and member cost are improved.
【０００６】[0006]
【実施例】次に、本発明について図面を参照して説明す
る。 実施例１ 図３は本発明による平面型光源装置の一実施例の正面図
である。全体構造として導光体３の側面の一方あるいは
二方に蛍光管１を配置し、導光体３の光出射面を残して
全体を筺体２が保持した構造となっている。図４は図３
のＡ−Ａ’線による断面図である。筺体２の蛍光管を包
囲する面は鏡面処理を施され、蛍光管１の光を反射させ
て導光体３の端面に入射する。端面より入射された光は
反射シート４によって反射シート４の反射側から平面状
に放射される。筺体２の材質としては合成樹脂もしくは
アルミ、鉄などの金属が挙げられる。筺体の蛍光管包囲
面の鏡面処理は、金属の場合には、その内側表面に鏡面
処理を施すことにより行う。合成樹脂製の場合は、内側
表面にスパッタ法によって銀等を付着させるか、もしく
は反射性の塗料を塗布することにより行う。これらの鏡
面処理により、蛍光管１の光を反射カバーを使用せずに
導光体３の端面に集光させることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. Embodiment 1 FIG. 3 is a front view of an embodiment of the flat light source device according to the present invention. The overall structure is such that the fluorescent tube 1 is arranged on one or two sides of the light guide 3 and the housing 2 holds the entire light guide 3 with the light emitting surface left. 4 is shown in FIG.
3 is a sectional view taken along line AA ′ of FIG. The surface of the housing 2 surrounding the fluorescent tube is mirror-finished so that the light of the fluorescent tube 1 is reflected and enters the end surface of the light guide 3. The light incident from the end face is radiated by the reflection sheet 4 in a plane shape from the reflection side of the reflection sheet 4. Examples of the material of the housing 2 include synthetic resins and metals such as aluminum and iron. In the case of metal, the mirror surface treatment of the surface surrounding the fluorescent tube of the housing is performed by performing mirror surface treatment on the inner surface thereof. When it is made of synthetic resin, silver or the like is attached to the inner surface by a sputtering method or a reflective paint is applied. By these mirror surface treatments, the light of the fluorescent tube 1 can be focused on the end surface of the light guide 3 without using a reflection cover.
【０００７】実施例２ 図１は本発明による平面型光源装置の別の一実施例の断
面図である。本実施例において、筺体２の蛍光管１包囲
面が鏡面処理されている点は実施例１と同様であるが、
本実施例においては、筺体２の導光体対峙面も鏡面処理
され、反射シートの代わりに用いられている。従って導
光体の裏面に設けていた反射シートは不要となる。Embodiment 2 FIG. 1 is a sectional view of another embodiment of the flat light source device according to the present invention. The present embodiment is similar to the first embodiment in that the surrounding surface of the fluorescent tube 1 of the housing 2 is mirror-finished, but
In this embodiment, the surface of the housing 2 facing the light guide body is also mirror-finished and used in place of the reflection sheet. Therefore, the reflection sheet provided on the back surface of the light guide is unnecessary.
【０００８】[0008]
【発明の効果】以上説明したように、本発明は筺体自体
に反射機能をもたせることにより、反射カバーあるいは
反射シート等の反射部材を使用せずに導光体に蛍光管の
光を集光させることができる。反射部材を除去あるいは
少なくすることにより以下のような効果を有する。 （１）部品点数が減ることによって、装置の信頼性が向
上する。 （２）部品点数が減ることによって、部材コストが減少
する。 （３）装置の重量低減化がなされる。例えば、反射部材
の長さが２１ｃｍであれば約１５ｇ減少する。これは、
発光部面積の大きな光源装置になるほど効果が大きい。 （４）反射部材の取り付け作業時間が０分となるため、
装置の製造工数削減となる。As described above, according to the present invention, the housing itself has a reflection function, so that the light of the fluorescent tube is condensed on the light guide without using a reflection member such as a reflection cover or a reflection sheet. be able to. The following effects can be obtained by removing or reducing the number of reflecting members. (1) The reliability of the device is improved by reducing the number of parts. (2) Since the number of parts is reduced, the member cost is reduced. (3) The weight of the device is reduced. For example, if the length of the reflecting member is 21 cm, it will be reduced by about 15 g. this is,
The larger the light emitting device area, the greater the effect. (4) Since the installation time of the reflecting member is 0 minutes,
The number of man-hours for manufacturing the device will be reduced.
【図１】本発明の第２実施例による平面型光源装置の断
面図である。FIG. 1 is a sectional view of a planar light source device according to a second embodiment of the present invention.
【図２】従来例による平面型光源装置の一例の断面図で
ある。FIG. 2 is a cross-sectional view of an example of a conventional planar light source device.
【図３】本発明の第１実施例による平面型光源装置の正
面図である。FIG. 3 is a front view of the planar light source device according to the first embodiment of the present invention.
【図４】図１のＡ−Ａ’線による断面図である。FIG. 4 is a cross-sectional view taken along the line A-A ′ of FIG.
１ 蛍光管 ２ 筺体 ３ 導光体 ４ 反射シート ５ 反射カバー 1 Fluorescent Tube 2 Housing 3 Light Guide 4 Reflective Sheet 5 Reflective Cover
Claims (4)
蛍光管とが前記導光体の光出射面を残して筺体内に保持
された平面型光源装置であって、前記筺体の前記蛍光管
包囲面が鏡面処理され、反射部材として機能することを
特徴とする平面型光源装置。1. A flat-type light source device in which a light guide and a fluorescent tube disposed on a side surface of the light guide are held in a housing leaving a light emitting surface of the light guide, A flat-type light source device, wherein the fluorescent tube surrounding surface of the housing is mirror-finished and functions as a reflecting member.
蛍光管とが前記導光体の光出射面を残して筺体内に保持
された平面型光源装置であって、前記筺体の前記導光体
対峙面および前記蛍光管包囲面が鏡面処理され、反射部
材として機能することを特徴とする平面型光源装置。2. A flat-type light source device in which a light guide body and a fluorescent tube arranged on a side surface of the light guide body are held in a housing leaving a light emitting surface of the light guide body, A flat-type light source device characterized in that the surface of the housing facing the light guide and the surrounding surface of the fluorescent tube are mirror-finished to function as a reflecting member.
請求項１または２記載の平面型光源装置。3. The planar light source device according to claim 1, wherein the housing is made of aluminum or iron.
１または２記載の平面型光源装置。4. The flat-type light source device according to claim 1, wherein the housing is made of synthetic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341837A JPH07168025A (en) | 1993-12-13 | 1993-12-13 | Flat light source apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341837A JPH07168025A (en) | 1993-12-13 | 1993-12-13 | Flat light source apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07168025A true JPH07168025A (en) | 1995-07-04 |
Family
ID=18349137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5341837A Pending JPH07168025A (en) | 1993-12-13 | 1993-12-13 | Flat light source apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07168025A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100783619B1 (en) * | 2002-06-29 | 2007-12-07 | 삼성전자주식회사 | Lighting device and backlight assembly and liquid crystal display device having the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH039304A (en) * | 1989-06-07 | 1991-01-17 | Mitsubishi Petrochem Co Ltd | backlight device |
| JPH04107507A (en) * | 1990-08-29 | 1992-04-09 | Hirashiro Yukiko | Plane light source unit |
-
1993
- 1993-12-13 JP JP5341837A patent/JPH07168025A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH039304A (en) * | 1989-06-07 | 1991-01-17 | Mitsubishi Petrochem Co Ltd | backlight device |
| JPH04107507A (en) * | 1990-08-29 | 1992-04-09 | Hirashiro Yukiko | Plane light source unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100783619B1 (en) * | 2002-06-29 | 2007-12-07 | 삼성전자주식회사 | Lighting device and backlight assembly and liquid crystal display device having the same |
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