JPH04288527A - Lighting device - Google Patents
Lighting deviceInfo
- Publication number
- JPH04288527A JPH04288527A JP3024784A JP2478491A JPH04288527A JP H04288527 A JPH04288527 A JP H04288527A JP 3024784 A JP3024784 A JP 3024784A JP 2478491 A JP2478491 A JP 2478491A JP H04288527 A JPH04288527 A JP H04288527A
- Authority
- JP
- Japan
- Prior art keywords
- metallic plate
- lighting device
- fluorescent lamp
- heat radiation
- reflecting member
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract 3
- 230000000191 radiation effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000010409 thin film Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は照明装置の温度上昇抑
制に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to suppressing temperature rise in lighting devices.
【０００２】0002
【従来の技術】図３は例えば特開平１−１１２２０２号
公報に示された従来の蛍光ランプ、導光体及び反射部材
からなる照明装置の断面図である。図において１は導光
体、２は蛍光ランプ、４は反射層、６はリフレクターで
ある。2. Description of the Related Art FIG. 3 is a cross-sectional view of a conventional illumination device comprising a fluorescent lamp, a light guide, and a reflecting member, as disclosed in, for example, Japanese Unexamined Patent Publication No. 1-112202. In the figure, 1 is a light guide, 2 is a fluorescent lamp, 4 is a reflective layer, and 6 is a reflector.
【０００３】上記照明装置は前述のように構成され、蛍
光ランプより出射した光とリフレクターにより反射され
た光が導光体（アクリル樹脂板、例えば厚さ約１０ｍｍ
）の端面より入射し、内部で多重反射を繰り返したのち
、４の反射層の反対側に出射される。これにより蛍光ラ
ンプなどの線状光源を面状光源化している。The lighting device is constructed as described above, and the light emitted from the fluorescent lamp and the light reflected by the reflector are passed through a light guide (an acrylic resin plate, for example, about 10 mm thick).
) enters the end face of the light beam, undergoes multiple reflections internally, and then exits to the opposite side of the reflective layer 4. This turns a linear light source such as a fluorescent lamp into a planar light source.
【０００４】ここで用いられるリフレクターは薄いフィ
ルムに金属薄膜を形成したものであり、例えば銀スパッ
タフィルム（２００μｍ厚程度のポリエステルフィルム
に銀（Ａｇ）をスパッタ法により形成したもの）である
。The reflector used here is a thin film with a metal thin film formed thereon, such as a silver sputtered film (silver (Ag) formed by sputtering on a polyester film approximately 200 μm thick).
【０００５】[0005]
【発明が解決しようとする課題】従来の蛍光ランプ、導
光体及び反射部材で構成される照明装置は以上のように
構成されているので、蛍光ランプの放熱性が悪く温度が
高くなるため、液晶表示装置などの背面光源として用い
た場合に表示劣化を引き起こすという問題があった。[Problems to be Solved by the Invention] Conventional lighting devices consisting of a fluorescent lamp, a light guide, and a reflecting member are constructed as described above. There is a problem in that display deterioration occurs when used as a backlight source for a liquid crystal display device or the like.
【０００６】[0006]
【課題を解決するための手段】この発明に係る照明装置
は、蛍光ランプの光を反射して導光体端面に入射するた
めの反射部材を反射部と放熱部からなる金属板とするも
のである。[Means for Solving the Problems] In the lighting device according to the present invention, the reflecting member for reflecting the light of the fluorescent lamp to enter the end face of the light guide is a metal plate consisting of a reflecting part and a heat radiating part. be.
【０００７】[0007]
【作用】この発明における照明装置の反射部材に金属板
を用いることで、蛍光ランプより発生する熱を逃がしや
すくしている。[Operation] By using a metal plate as the reflective member of the lighting device in this invention, it is easy to dissipate the heat generated by the fluorescent lamp.
【０００８】[0008]
【実施例】実施例１．図１はこの発明の一実施例を示す
構成断面図である。図において１は導光体（アクリル樹
脂板）、２は蛍光ランプ、３は蛍光ランプの光を反射し
て導光体端面に入射するための金属板、４は反射層、５
は金属板３の反射部である。この場合、３の金属板の材
料には熱伝導性の良い材料、例えばアルミ（Ａｌ）など
を用いる。この金属板は図１に示すように、蛍光ランプ
をおおうだけでなく放熱性を良くするために導光体１の
反射層４を形成してある面をおおう。[Example] Example 1. FIG. 1 is a sectional view showing an embodiment of the present invention. In the figure, 1 is a light guide (acrylic resin plate), 2 is a fluorescent lamp, 3 is a metal plate for reflecting the light of the fluorescent lamp to enter the end face of the light guide, 4 is a reflective layer, and 5
is a reflective part of the metal plate 3. In this case, the metal plate 3 is made of a material with good thermal conductivity, such as aluminum (Al). As shown in FIG. 1, this metal plate not only covers the fluorescent lamp but also covers the surface of the light guide 1 on which the reflective layer 4 is formed in order to improve heat dissipation.
【０００９】本発明において、反射層４の面をおおう金
属板の大きさは重要な要件ではなく金属板材料に応じて
適当に選択すればよい。In the present invention, the size of the metal plate covering the surface of the reflective layer 4 is not an important requirement, and may be appropriately selected depending on the material of the metal plate.
【００１０】また、５の反射部以外の金属板３の部分に
放熱効果を向上するために穴を設けるなどの加工を施し
てもよい。[0010] Further, the portions of the metal plate 3 other than the reflective portion 5 may be processed, such as by providing holes, in order to improve the heat dissipation effect.
【００１１】また、５の金属板の反射部は表面に反射率
の高い金属薄膜を形成したり、表面研磨を施すことによ
り設けることができる。金属薄膜材料としては例えば銀
（Ａｇ）であるが、他金属材料を用いてもよい。The reflective portion of the metal plate 5 can be provided by forming a highly reflective metal thin film on the surface or by polishing the surface. The metal thin film material is, for example, silver (Ag), but other metal materials may also be used.
【００１２】さらに金属板３の放熱性を向上するために
５の反射部を除く部分に黒塗装、梨地加工（ザラメ加工
）を施すこともできる。Furthermore, in order to improve the heat dissipation of the metal plate 3, the portions other than the reflective portions 5 may be painted black or given a satin finish (grain finish).
【００１３】実施例２．さらに放熱効果を向上するため
に図２に示すように金属板３に放熱フィン７をつけても
よい。Example 2. Furthermore, in order to improve the heat dissipation effect, heat dissipation fins 7 may be attached to the metal plate 3 as shown in FIG.
【００１４】[0014]
【発明の効果】以上のようにこの発明によれば前記照明
装置に用いる反射部材に反射部と放熱部をもつ金属板を
用いたので、ランプからの発熱を効率よく発散でき、照
明装置の温度上昇を抑制する効果がある。As described above, according to the present invention, since a metal plate having a reflective part and a heat radiating part is used as the reflective member used in the lighting device, heat generated from the lamp can be efficiently dissipated, and the temperature of the lighting device can be reduced. It has the effect of suppressing the increase.
【００１５】また、液晶表示装置などの背面光源として
用いた場合に、照明からの熱による液晶表示装置の表示
劣化を防止できる効果がある。Furthermore, when used as a backlight source for a liquid crystal display device, etc., it is effective in preventing display deterioration of the liquid crystal display device due to heat from illumination.
【図１】この発明の一実施例による照明装置を示す断面
図である。FIG. 1 is a sectional view showing a lighting device according to an embodiment of the present invention.
【図２】この発明の他の実施例による照明装置を示す断
面図である。FIG. 2 is a sectional view showing a lighting device according to another embodiment of the invention.
【図３】従来の照明装置を示す断面図である。FIG. 3 is a sectional view showing a conventional lighting device.
１ 導光体 ２ 蛍光ランプ ３ 金属板 ４ 反射層 ５ 反射部 ６ リフレクター ７ 放熱フィン 1. Light guide 2 Fluorescent lamp 3 Metal plate 4 Reflection layer 5 Reflection part 6 Reflector 7 Heat dissipation fins
Claims (1)
なる照明装置において、上記反射部材が反射部と放熱部
をもつ金属板であることを特徴とする照明装置。1. A lighting device comprising a fluorescent lamp, a light guide, and a reflective member, wherein the reflective member is a metal plate having a reflective portion and a heat radiating portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2478491A JP2820166B2 (en) | 1991-02-19 | 1991-02-19 | Lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2478491A JP2820166B2 (en) | 1991-02-19 | 1991-02-19 | Lighting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04288527A true JPH04288527A (en) | 1992-10-13 |
| JP2820166B2 JP2820166B2 (en) | 1998-11-05 |
Family
ID=12147814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2478491A Expired - Lifetime JP2820166B2 (en) | 1991-02-19 | 1991-02-19 | Lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2820166B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07322172A (en) * | 1994-05-20 | 1995-12-08 | Fujitsu General Ltd | Display device |
| JPH07322171A (en) * | 1994-05-20 | 1995-12-08 | Fujitsu General Ltd | Display device |
| KR100421494B1 (en) * | 2001-12-26 | 2004-03-11 | 엘지.필립스 엘시디 주식회사 | Apparatus of back light |
| KR100460406B1 (en) * | 1997-05-12 | 2005-01-17 | 삼성전자주식회사 | Lcd module for increasing a heat exhausting effect |
| US6871979B2 (en) * | 2002-10-21 | 2005-03-29 | Toppoly Optoelectronics Corp. | Back light module |
| JP2006286639A (en) | 2005-04-01 | 2006-10-19 | Avago Technologies General Ip (Singapore) Private Ltd | Light emitting device having a plurality of overlapping panels forming recess for emitting light |
| JP2018146780A (en) * | 2017-03-06 | 2018-09-20 | 達広 佐野 | Thin LED poster panel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661574B (en) * | 2012-04-28 | 2014-05-21 | 深圳市华星光电技术有限公司 | Light guide plate and backlight mould provided with same |
-
1991
- 1991-02-19 JP JP2478491A patent/JP2820166B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07322172A (en) * | 1994-05-20 | 1995-12-08 | Fujitsu General Ltd | Display device |
| JPH07322171A (en) * | 1994-05-20 | 1995-12-08 | Fujitsu General Ltd | Display device |
| KR100460406B1 (en) * | 1997-05-12 | 2005-01-17 | 삼성전자주식회사 | Lcd module for increasing a heat exhausting effect |
| KR100421494B1 (en) * | 2001-12-26 | 2004-03-11 | 엘지.필립스 엘시디 주식회사 | Apparatus of back light |
| US6871979B2 (en) * | 2002-10-21 | 2005-03-29 | Toppoly Optoelectronics Corp. | Back light module |
| JP2006286639A (en) | 2005-04-01 | 2006-10-19 | Avago Technologies General Ip (Singapore) Private Ltd | Light emitting device having a plurality of overlapping panels forming recess for emitting light |
| JP2018146780A (en) * | 2017-03-06 | 2018-09-20 | 達広 佐野 | Thin LED poster panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2820166B2 (en) | 1998-11-05 |
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