JP2005212546A - 車両用表示装置 - Google Patents
車両用表示装置 Download PDFInfo
- Publication number
- JP2005212546A JP2005212546A JP2004019714A JP2004019714A JP2005212546A JP 2005212546 A JP2005212546 A JP 2005212546A JP 2004019714 A JP2004019714 A JP 2004019714A JP 2004019714 A JP2004019714 A JP 2004019714A JP 2005212546 A JP2005212546 A JP 2005212546A
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- JP
- Japan
- Prior art keywords
- light
- reflecting surface
- display
- liquid crystal
- display device
- 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.)
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 89
- 230000003287 optical effect Effects 0.000 claims description 24
- 238000013459 approach Methods 0.000 claims description 9
- 239000013078 crystal Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000005286 illumination Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
Classifications
-
- 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
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Instrument Panels (AREA)
- Liquid Crystal (AREA)
Abstract
【解決手段】 液晶画面21の裏側に液晶画面21と平行に第1反射面31を設け、液晶画面21と第1反射面31との間にその主光軸を液晶画面21と平行に発光ダイオード4を配置するとともに、発光ダイオード4からの光を液晶画面21に向けて反射する第2反射面32と発光ダイオード4からの光を第1反射面31に向けて反射する第3反射面33を設けた。これにより、従来の車両用表示装置において光源からの光が導光体を通過する際に生じる光量の減衰を無くして液晶画面21の発光輝度を高めるとともに、第1反射面31から液晶画面21までの距離を液晶画面21全域でほぼ等しくして液晶画面21の発光輝度を均一化することができる。
【選択図】 図3
Description
2 液晶パネル(表示部材)
21 液晶画面(表示画面)
3 リフレクタ(反射部材)
31 第1反射面
32 第2反射面
33 第3反射面
34 第4反射面
4 発光ダイオード(光源)
5 拡散シート
6 プリント基板
7 反射鏡
8 ケーシング
8a 開口部
9 フロントウィンドシールド
10 ハーフミラー
11 インストルメントパネル
11a 開口部
12 制御回路
13 イグニッションスイッチ
14 バッテリ
15 車速センサ
A 眼
B 虚像
C 主光軸
D 光路
E 光路
F 光路
G 光路
H 光路
J 光路
K 光路
Claims (7)
- 表示部材と、
前記表示部材の裏面側に配置される光源と、
前記表示部材の裏面側に前記表示部材を覆うように重ねて配置され前記光源からの光を前記表示部材に向けて反射する反射部材とを備え、
前記光源からの光および前記反射部材からの反射光により前記表示部材の表示画面を透過照明する車両用表示装置であって、
前記反射部材は、前記表示部材と略平行に設けられる第1反射面と、前記表示部材と前記第1反射面間に配置される第2反射面および第3反射面とを備え、
前記第2反射面および前記第3反射面は、前記第1反射面の一端側において前記表示画面側から前記第1反射面に向かって前記第2反射面、前記第3反射面の順に配置され、
前記光源は前記第1反射面の他端側においてその主光軸を前記表示画面と略平行とし且つ前記第1反射面の前記一端側に向けて光を照射するように配置され、
前記第2反射面は前記光源から発せられた光を前記表示画面に向けて反射するように形成され、
前記第3反射面は前記光源から発せられた光を前記第1反射面に向けて反射し且つ前記第1反射面での反射光が前記表示画面に入射するように形成されることを特徴とする車両用表示装置。 - 前記第2反射面は前記表示画面側から前記第1反射面に近づくに連れて前記光源に近づくように傾斜して形成され、且つ前記第3反射面は前記表示画面側から前記第1反射面に近づくに連れて前記光源から遠ざかるように傾斜して形成されることを特徴とする請求項1に記載の車両用表示装置。
- 前記第1反射面、前記第2反射面および前記第3反射面は一体的に形成されることを特徴とする請求項1または請求項2に記載の車両用表示装置。
- 前記反射部材の前記他端側に前記光源から発せられた光を前記第1反射面に向けて反射する第4反射面を設けることを特徴とする請求項1ないし請求項3に記載の車両用表示装置。
- 前記光源は発光ダイオードであることを特徴とする請求項1ないし請求項4のいずれかに記載の車両用表示装置。
- 前記表示部材は液晶表示器であることを特徴とする請求項1ないし請求項5のいずれかに記載の車両用表示装置。
- 前記車両用表示装置は車両用ヘッドアップディスプレイであることを特徴とする請求項1ないし請求項6のいずれか6に記載の車両用表示装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004019714A JP2005212546A (ja) | 2004-01-28 | 2004-01-28 | 車両用表示装置 |
US11/044,174 US7301699B2 (en) | 2004-01-28 | 2005-01-28 | Display device having reflecting member with multiple reflecting surfaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004019714A JP2005212546A (ja) | 2004-01-28 | 2004-01-28 | 車両用表示装置 |
Publications (1)
Publication Number | Publication Date |
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JP2005212546A true JP2005212546A (ja) | 2005-08-11 |
Family
ID=34792581
Family Applications (1)
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---|---|---|---|
JP2004019714A Pending JP2005212546A (ja) | 2004-01-28 | 2004-01-28 | 車両用表示装置 |
Country Status (2)
Country | Link |
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US (1) | US7301699B2 (ja) |
JP (1) | JP2005212546A (ja) |
Families Citing this family (57)
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JPWO2007138880A1 (ja) * | 2006-05-26 | 2009-10-01 | パナソニック株式会社 | 画像表示装置 |
JP5150106B2 (ja) * | 2006-06-05 | 2013-02-20 | 本田技研工業株式会社 | 車両用視認補助装置 |
TWI355510B (en) * | 2007-05-18 | 2012-01-01 | Conserve & Associates Inc | Head-up display for vehicles |
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DE102011014145A1 (de) | 2010-12-23 | 2012-06-28 | Continental Automotive Gmbh | Head-up-Display für ein Kraftfahrzeug |
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JPH03118593A (ja) | 1989-09-29 | 1991-05-21 | Enplas Corp | 照明装置 |
JPH0647927U (ja) | 1992-12-07 | 1994-06-28 | 株式会社小糸製作所 | 面状発光体 |
JPH10319400A (ja) * | 1997-05-17 | 1998-12-04 | Enplas Corp | サイドライト型面光源装置 |
JP2001125496A (ja) | 1999-10-29 | 2001-05-11 | Nippon Seiki Co Ltd | 表示装置 |
JP2002156916A (ja) | 2000-11-20 | 2002-05-31 | Nippon Seiki Co Ltd | 表示装置 |
JP4264965B2 (ja) | 2001-03-29 | 2009-05-20 | 日本精機株式会社 | 表示装置 |
DE60133052T2 (de) * | 2001-07-30 | 2009-04-30 | Nippon Seiki Co. Ltd., Nagaoka | Fahrzeuganzeigevorrichtung |
JP2003161906A (ja) | 2001-11-29 | 2003-06-06 | Nippon Seiki Co Ltd | 表示装置 |
-
2004
- 2004-01-28 JP JP2004019714A patent/JP2005212546A/ja active Pending
-
2005
- 2005-01-28 US US11/044,174 patent/US7301699B2/en not_active Expired - Fee Related
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US20050162738A1 (en) | 2005-07-28 |
US7301699B2 (en) | 2007-11-27 |
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