JPH0399657U - - Google Patents
Info
- Publication number
- JPH0399657U JPH0399657U JP845790U JP845790U JPH0399657U JP H0399657 U JPH0399657 U JP H0399657U JP 845790 U JP845790 U JP 845790U JP 845790 U JP845790 U JP 845790U JP H0399657 U JPH0399657 U JP H0399657U
- Authority
- JP
- Japan
- Prior art keywords
- illuminance
- illumination
- response
- lighting signal
- reduction switch
- 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
- 238000005286 illumination Methods 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Description
第１図及び第２図は本考案の一実施例を示し、
第１図は電気的構成を示すブロツク図、第２図Ａ
，Ｂ，Ｃはセグメント周囲照度とセグメント発光
照度と視認上の表示コントラスト比との関係を示
すグラフ、第３図は従来装置におけるセグメント
周囲照度とセグメント発光照度と視認上の表示コ
ントラスト比との関係を示すグラフ、第４図は表
示器の正面図である。
４……調光ＩＣ（調光手段）、５……照明ラン
プ（照明手段）、７……照度減少スイツチ、９…
…遅延制御手段。
1 and 2 show an embodiment of the present invention,
Figure 1 is a block diagram showing the electrical configuration, Figure 2A
, B, and C are graphs showing the relationship between segment ambient illuminance, segment luminous illuminance, and visual display contrast ratio, and Fig. 3 shows the relationship between segment ambient illuminance, segment luminous illuminance, and visual display contrast ratio in a conventional device. FIG. 4 is a front view of the display. 4... Dimming IC (dimmer means), 5... Illumination lamp (illumination means), 7... Illuminance reduction switch, 9...
...delay control means.
Claims (1)
動作に応動して予め定められた所定レベルまで照
度を減少するデユーテイの点灯信号を出力する調
光手段と、前記点灯信号で照明される照明手段と
を有する照度減少装置において、前記照度減少ス
イツチの動作に応動して予め定められた一定時間
の期間に次第に照明照度を減少させるように前記
調光手段を遅延制御する遅延制御手段を備えたこ
とを特徴とする照度減少装置。 It has an illuminance reduction switch, a dimming means for outputting a duty lighting signal for reducing the illuminance to a predetermined level in response to the operation of the illumination reduction switch, and an illumination means illuminated by the lighting signal. The illuminance reduction device is characterized by comprising a delay control means for delay-controlling the dimming means so as to gradually reduce illumination illuminance during a predetermined period of time in response to the operation of the illuminance reduction switch. Illuminance reduction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP845790U JPH0399657U (en) | 1990-01-31 | 1990-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP845790U JPH0399657U (en) | 1990-01-31 | 1990-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0399657U true JPH0399657U (en) | 1991-10-18 |
Family
ID=31512088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP845790U Pending JPH0399657U (en) | 1990-01-31 | 1990-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0399657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8466633B2 (en) | 2010-02-24 | 2013-06-18 | Denso Corporation | Illumination controlling device for vehicle |
-
1990
- 1990-01-31 JP JP845790U patent/JPH0399657U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8466633B2 (en) | 2010-02-24 | 2013-06-18 | Denso Corporation | Illumination controlling device for vehicle |