JPH0483845U - - Google Patents
Info
- Publication number
- JPH0483845U JPH0483845U JP1990127425U JP12742590U JPH0483845U JP H0483845 U JPH0483845 U JP H0483845U JP 1990127425 U JP1990127425 U JP 1990127425U JP 12742590 U JP12742590 U JP 12742590U JP H0483845 U JPH0483845 U JP H0483845U
- Authority
- JP
- Japan
- Prior art keywords
- drive pulse
- lighting element
- microcomputer
- control circuit
- detection signal
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Details Of Measuring And Other Instruments (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
Description
第１図は本考案の一実施例を示す構成図、第２
図は明るさコントロール回路の詳細図である。
図中、１０は照明素子、２０はパネルコントロ
ール回路、３０はマイクロコンピユータ、４０は
明るさコントロール回路である。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a detailed diagram of the brightness control circuit. In the figure, 10 is a lighting element, 20 is a panel control circuit, 30 is a microcomputer, and 40 is a brightness control circuit.
Claims (1)
式の駆動パルスを発生するパネルコントロール回
路２０と、 前記駆動パルスの有無を検出するマイクロコン
ピユータ３０と、 該マイクロコンピユータからの駆動パルス検出
信号が入力しているときは前記駆動パルスに応じ
て前記照明素子に流れる電流を断続させ、また該
マイクロコンピユータからの駆動パルス検出信号
が入力しないときは該照明素子に流れる電流を連
続させる明るさコントロール回路４０とを備える
ことを特徴とする車載用機器の照明制御装置。[Claims for Utility Model Registration] A lighting element 10 of an in-vehicle device, a panel control circuit 20 that generates a variable duty drive pulse to control the brightness of the lighting element, and a microcontroller that detects the presence or absence of the drive pulse. When the drive pulse detection signal from the computer 30 and the microcomputer is input, the current flowing through the lighting element is intermittent according to the drive pulse, and when the drive pulse detection signal from the microcomputer is not input. A lighting control device for a vehicle-mounted device, comprising: a brightness control circuit 40 that causes a current to flow continuously through the lighting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990127425U JPH0483845U (en) | 1990-11-29 | 1990-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990127425U JPH0483845U (en) | 1990-11-29 | 1990-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0483845U true JPH0483845U (en) | 1992-07-21 |
Family
ID=31874922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990127425U Pending JPH0483845U (en) | 1990-11-29 | 1990-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0483845U (en) |
-
1990
- 1990-11-29 JP JP1990127425U patent/JPH0483845U/ja active Pending
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