JPH0278980U - - Google Patents

Info

Publication number
JPH0278980U
JPH0278980U JP15722088U JP15722088U JPH0278980U JP H0278980 U JPH0278980 U JP H0278980U JP 15722088 U JP15722088 U JP 15722088U JP 15722088 U JP15722088 U JP 15722088U JP H0278980 U JPH0278980 U JP H0278980U
Authority
JP
Japan
Prior art keywords
display
light guide
board
light
diffuse reflection
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
JP15722088U
Other languages
Japanese (ja)
Other versions
JPH068622Y2 (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 JP1988157220U priority Critical patent/JPH068622Y2/en
Publication of JPH0278980U publication Critical patent/JPH0278980U/ja
Application granted granted Critical
Publication of JPH068622Y2 publication Critical patent/JPH068622Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

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

第１図及び第２図はこの考案に係る表示板の照
明装置の実施例を示し、第１図は導光体の斜視図
、第２図はこの導光体を組み込んだ表示板の照明
装置を示した断面図で、第２図Ａは有効光量を示
した断面図、第２図Ｂは無効光量（光量ロス）を
示した断面図である。第３図及び第４図は従来例
を示し、第３図は導光体の斜視図、第４図Ａは表
示板の照明装置の有効光量を示した断面図、第４
図Ｂは無効光量（光量ロス）を示した断面図であ
る。 主な符号の説明、１，１０：導光体、１ａ，１
ｂ：導光体の傾斜面、１ｃ，１０ｂ：導光体の拡
散反射面、２：表示板、３：プリント基板、４，
５：内部光源、Ａ，Ｂ，Ｄ：有効光量、Ｃ，Ｅ：
無効光量。 1 and 2 show an embodiment of a display board illumination device according to this invention, FIG. 1 is a perspective view of a light guide, and FIG. 2 is a display board illumination device incorporating this light guide. FIG. 2A is a sectional view showing the effective light amount, and FIG. 2B is a sectional view showing the ineffective light amount (light amount loss). 3 and 4 show conventional examples, FIG. 3 is a perspective view of the light guide, FIG.
FIG. B is a cross-sectional view showing the ineffective light amount (light amount loss). Explanation of main symbols, 1, 10: Light guide, 1a, 1
b: Inclined surface of light guide, 1c, 10b: Diffuse reflection surface of light guide, 2: Display board, 3: Printed circuit board, 4,
5: Internal light source, A, B, D: Effective light amount, C, E:
Ineffective light amount.

Claims (1)

【実用新案登録請求の範囲】 表示板の表示素子を内部より照明して表示する
ために、表示板の裏側に設けられた拡散反射面を
形成した導光体と、内部光源とを備えた表示板の
照明装置において、 上記導光体と表示板とが接触する導光体の接触
面を傾斜させて、導光体の拡散反射面に当る光量
を大きくするよう構成したことを特徴とする表示
板の照明装置。[Claims for Utility Model Registration] A display comprising a light guide with a diffuse reflection surface provided on the back side of a display board and an internal light source in order to display by illuminating the display elements of the display board from inside. A display characterized in that, in a board illumination device, the contact surface of the light guide where the light guide and the display board come into contact is inclined to increase the amount of light hitting the diffuse reflection surface of the light guide. Board lighting device.
JP1988157220U 1988-12-03 1988-12-03 Display board illuminator Expired - Lifetime JPH068622Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988157220U JPH068622Y2 (en) 1988-12-03 1988-12-03 Display board illuminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988157220U JPH068622Y2 (en) 1988-12-03 1988-12-03 Display board illuminator

Publications (2)

Publication Number Publication Date
JPH0278980U true JPH0278980U (en) 1990-06-18
JPH068622Y2 JPH068622Y2 (en) 1994-03-02

Family

ID=31436472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988157220U Expired - Lifetime JPH068622Y2 (en) 1988-12-03 1988-12-03 Display board illuminator

Country Status (1)

Country Link
JP (1) JPH068622Y2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143202A (en) * 1983-02-03 1984-08-16 セイコーエプソン株式会社 Plane light source
JPS612685U (en) * 1984-06-12 1986-01-09 株式会社 ワコム lcd panel display
JPS61246702A (en) * 1985-04-24 1986-11-04 Mitsubishi Rayon Co Ltd Light diffuser
JPS6210621A (en) * 1985-07-09 1987-01-19 Mitsubishi Electric Corp liquid crystal display device
JPS6333703A (en) * 1986-07-28 1988-02-13 Matsushita Electric Works Ltd Surface luminaire
JPS6445003A (en) * 1987-08-13 1989-02-17 Matsushita Electric Works Ltd Panel lighting appliance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143202A (en) * 1983-02-03 1984-08-16 セイコーエプソン株式会社 Plane light source
JPS612685U (en) * 1984-06-12 1986-01-09 株式会社 ワコム lcd panel display
JPS61246702A (en) * 1985-04-24 1986-11-04 Mitsubishi Rayon Co Ltd Light diffuser
JPS6210621A (en) * 1985-07-09 1987-01-19 Mitsubishi Electric Corp liquid crystal display device
JPS6333703A (en) * 1986-07-28 1988-02-13 Matsushita Electric Works Ltd Surface luminaire
JPS6445003A (en) * 1987-08-13 1989-02-17 Matsushita Electric Works Ltd Panel lighting appliance

Also Published As

Publication number Publication date
JPH068622Y2 (en) 1994-03-02

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