JPS63188521U - - Google Patents
Info
- Publication number
- JPS63188521U JPS63188521U JP7978387U JP7978387U JPS63188521U JP S63188521 U JPS63188521 U JP S63188521U JP 7978387 U JP7978387 U JP 7978387U JP 7978387 U JP7978387 U JP 7978387U JP S63188521 U JPS63188521 U JP S63188521U
- Authority
- JP
- Japan
- Prior art keywords
- brightness
- control means
- character
- light
- illuminates
- 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
- 230000007423 decrease Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Details Of Measuring Devices (AREA)
Description
第１図はこの考案の第１の実施例の表示装置の
構成図、第２図は同じく表示装置の断面図、第３
図は同じく背景灯及び文字灯の印加電圧に対する
輝度特性を示す説明図、第４図は背景部輝度に対
する輝度対比の最小値の変化を示す説明図、第５
図は第２の実施例の構成図、第６図は第５図のマ
イクロコンピユータの制御動作を示すフローチヤ
ート、第７図は従来の背景灯及び表示灯の印加電
圧に対する輝度特性を示す説明図である。
９……背景灯、１１……文字灯、１５……背景
灯輝度制御回路（第１の輝度制御手段）、１７…
…文字灯輝度制御回路（第２の輝度制御手段）。
FIG. 1 is a configuration diagram of a display device according to a first embodiment of this invention, FIG. 2 is a sectional view of the display device, and FIG.
The figures are also explanatory diagrams showing the brightness characteristics of the background lights and character lights with respect to the applied voltage. Figure 4 is an explanatory diagram showing the change in the minimum value of the luminance contrast with respect to the background luminance.
6 is a flowchart showing the control operation of the microcomputer shown in FIG. 5. FIG. 7 is an explanatory diagram showing the brightness characteristics of conventional background lights and indicator lights with respect to applied voltage. It is. 9...Background light, 11...Character light, 15...Background light brightness control circuit (first brightness control means), 17...
...Character light brightness control circuit (second brightness control means).
Claims (1)
する第１の輝度制御手段と、文字部の照明を行な
う文字灯の輝度を制御する第２の輝度制御手段と
を有し、前記第１または第２の輝度制御手段は環
境照度が低くなるに従い前記背景灯の輝度と前記
文字灯の輝度との差が大きくなるように制御する
ことを特徴とする車両用表示装置。 It has a first brightness control means for controlling the brightness of a background light that illuminates the entire display section, and a second brightness control means that controls the brightness of a character light that illuminates a character section. A display device for a vehicle, wherein the second brightness control means performs control such that the difference between the brightness of the background light and the brightness of the character light increases as the environmental illuminance decreases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7978387U JPS63188521U (en) | 1987-05-28 | 1987-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7978387U JPS63188521U (en) | 1987-05-28 | 1987-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63188521U true JPS63188521U (en) | 1988-12-02 |
Family
ID=30929973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7978387U Pending JPS63188521U (en) | 1987-05-28 | 1987-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63188521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013213775A (en) * | 2012-04-03 | 2013-10-17 | Denso Corp | Pointer display device |
-
1987
- 1987-05-28 JP JP7978387U patent/JPS63188521U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013213775A (en) * | 2012-04-03 | 2013-10-17 | Denso Corp | Pointer display device |
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