JPH0440268U - - Google Patents

Info

Publication number
JPH0440268U
JPH0440268U JP1990081739U JP8173990U JPH0440268U JP H0440268 U JPH0440268 U JP H0440268U JP 1990081739 U JP1990081739 U JP 1990081739U JP 8173990 U JP8173990 U JP 8173990U JP H0440268 U JPH0440268 U JP H0440268U
Authority
JP
Japan
Prior art keywords
light guide
central portion
light source
area
incident end
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
Application number
JP1990081739U
Other languages
Japanese (ja)
Other versions
JP2554180Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990081739U priority Critical patent/JP2554180Y2/en
Priority to KR1019910003879A priority patent/KR100225864B1/en
Priority to DE69120349T priority patent/DE69120349T2/en
Priority to US07/666,901 priority patent/US5134549A/en
Priority to EP91103713A priority patent/EP0462361B1/en
Publication of JPH0440268U publication Critical patent/JPH0440268U/ja
Application granted granted Critical
Publication of JP2554180Y2 publication Critical patent/JP2554180Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は本考案の第１の実施例を示す
図、第３図は第２の実施例のパターンを示す図、
第４図、第５図は従来の導光体を用いた面光源装
置の図である。 １……光源、２……導光体、３……拡散板、４
……反射板、５……拡散作用を有するパターン。 1 and 2 are diagrams showing the first embodiment of the present invention, and FIG. 3 is a diagram showing the pattern of the second embodiment,
FIGS. 4 and 5 are diagrams of a surface light source device using a conventional light guide. 1... Light source, 2... Light guide, 3... Diffusion plate, 4
... Reflection plate, 5... Pattern having a diffusive effect.

Claims (1)

【実用新案登録請求の範囲】 (1) 線状の光源と、入射端面を前記光源に近接
配置した導光体と、前記導光体表面に設けた拡散
板と、前記導光体の裏面に設けた反射面とよりな
る面光源装置において、前記導光体の入射端面の
長さを前記線状の光源の全体の長さとほぼ等しく
すると共に前記導光体の反射側に入射端面側でそ
の中央部分が面積において最も疎で該中央部分か
ら離れるにつれて次第に密になる乳白色のパター
ンを設けたことを特徴とする照明装置。 (2) 前記乳白色のパターンが前記中央部分が最
も面積が小でそれより離れるにつれて面積が大に
なる斑点からなる請求項(1)の照明装置。 (3) 前記乳白色のパターンが前記中央部分が相
互の間隔が最も大でそれより離れるにつれて相互
の間隔が次第に小にある同一の面積の斑点からな
る請求項(1)の照明装置。[Claims for Utility Model Registration] (1) A linear light source, a light guide whose incident end surface is placed close to the light source, a diffuser plate provided on the surface of the light guide, and a light guide provided on the back surface of the light guide. In a surface light source device comprising a reflective surface provided, the length of the incident end surface of the light guide is made approximately equal to the entire length of the linear light source, and the length of the incident end surface of the light guide is made approximately equal to the entire length of the linear light source, and 1. A lighting device characterized by providing a milky-white pattern that is sparse in area in a central portion and gradually becomes denser as it moves away from the central portion. (2) The lighting device according to claim 1, wherein the milky white pattern is comprised of spots having the smallest area in the central portion and increasing in area as the distance from the central portion increases. (3) The illumination device according to claim 1, wherein the milky white pattern is comprised of spots of the same area with the largest mutual spacing at the central portion and gradually decreasing mutual spacing as the distance increases.
JP1990081739U 1990-06-19 1990-08-02 Surface light source device Expired - Lifetime JP2554180Y2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1990081739U JP2554180Y2 (en) 1990-08-02 1990-08-02 Surface light source device
KR1019910003879A KR100225864B1 (en) 1990-06-19 1991-03-11 Plate optical source apparatus
DE69120349T DE69120349T2 (en) 1990-06-19 1991-03-11 Device for a flat light source
US07/666,901 US5134549A (en) 1990-06-19 1991-03-11 Surface light source device
EP91103713A EP0462361B1 (en) 1990-06-19 1991-03-11 Surface light source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990081739U JP2554180Y2 (en) 1990-08-02 1990-08-02 Surface light source device

Publications (2)

Publication Number Publication Date
JPH0440268U true JPH0440268U (en) 1992-04-06
JP2554180Y2 JP2554180Y2 (en) 1997-11-12

Family

ID=31627943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990081739U Expired - Lifetime JP2554180Y2 (en) 1990-06-19 1990-08-02 Surface light source device

Country Status (1)

Country Link
JP (1) JP2554180Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1068947A (en) * 1996-08-27 1998-03-10 Matsushita Electric Works Ltd Edge light panel and its production
WO2013077237A1 (en) * 2011-11-25 2013-05-30 シャープ株式会社 Light source module, electronic device provided with same, and liquid crystal display device
JP5621015B1 (en) * 2013-05-31 2014-11-05 シャープ株式会社 Light guide plate, illumination device, display device, and television receiver

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0385520A (en) * 1989-08-30 1991-04-10 Toshiba Corp Liquid crystal display device
JP3051476U (en) * 1997-12-17 1998-08-25 和人 丸山 Pacemaker electromagnetic interference prevention clothing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0385520A (en) * 1989-08-30 1991-04-10 Toshiba Corp Liquid crystal display device
JP3051476U (en) * 1997-12-17 1998-08-25 和人 丸山 Pacemaker electromagnetic interference prevention clothing

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1068947A (en) * 1996-08-27 1998-03-10 Matsushita Electric Works Ltd Edge light panel and its production
WO2013077237A1 (en) * 2011-11-25 2013-05-30 シャープ株式会社 Light source module, electronic device provided with same, and liquid crystal display device
JP2013114821A (en) * 2011-11-25 2013-06-10 Sharp Corp Light source module, electronic apparatus having the same, and liquid crystal display device
JP5621015B1 (en) * 2013-05-31 2014-11-05 シャープ株式会社 Light guide plate, illumination device, display device, and television receiver
WO2014192658A1 (en) * 2013-05-31 2014-12-04 シャープ株式会社 Light guiding plate, illumination device, display device, and television receiving device
CN105190153A (en) * 2013-05-31 2015-12-23 夏普株式会社 Light guiding plate, illumination device, display device, and television receiving device
US9684109B2 (en) 2013-05-31 2017-06-20 Sharp Kabushiki Kaisha Light guide plate, lighting device, display device, and television device

Also Published As

Publication number Publication date
JP2554180Y2 (en) 1997-11-12

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term