JPS5925421U - Instrument lighting system - Google Patents
Instrument lighting systemInfo
- Publication number
- JPS5925421U JPS5925421U JP12180582U JP12180582U JPS5925421U JP S5925421 U JPS5925421 U JP S5925421U JP 12180582 U JP12180582 U JP 12180582U JP 12180582 U JP12180582 U JP 12180582U JP S5925421 U JPS5925421 U JP S5925421U
- Authority
- JP
- Japan
- Prior art keywords
- lighting system
- instrument lighting
- fluctuations
- lighting
- instrument
- 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
Links
Landscapes
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
- Details Of Measuring Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の好適な第１実施例のブロック構成図、
第２図は従来装置の発光光度特性図、第３図は第１図実
施例の発光光度特性図、第４図は本考案の好適な第２実
施例の回路図、第５図は第４図の動作を説明する各部波
形図である。
１０・・・光度指令回路、１２・・・発振回路、１４・
・・積分回路、１８・・・比較回路、２４・・・ディス
プレイ装置、３８・・・ランプ。FIG. 1 is a block diagram of a preferred first embodiment of the present invention;
FIG. 2 is a luminous intensity characteristic diagram of the conventional device, FIG. 3 is a luminous luminous intensity characteristic diagram of the embodiment shown in FIG. 1, FIG. 4 is a circuit diagram of a second preferred embodiment of the present invention, and FIG. It is a waveform diagram of each part explaining the operation|movement of a figure. 10... Luminous intensity command circuit, 12... Oscillation circuit, 14.
...Integrator circuit, 18...Comparison circuit, 24...Display device, 38...Lamp.
Claims (1)
明用点灯素子に供給して照明用点灯素子の発光光度を通
電電流の変動に係わらず一定とする、ことを特徴とする
計器照明装置。An instrument lighting device characterized in that a pulsed lighting current having a pulse width corresponding to fluctuations in a power supply voltage is supplied to an illumination lighting element to keep the luminous intensity of the lighting element constant regardless of fluctuations in the applied current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12180582U JPS5925421U (en) | 1982-08-11 | 1982-08-11 | Instrument lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12180582U JPS5925421U (en) | 1982-08-11 | 1982-08-11 | Instrument lighting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5925421U true JPS5925421U (en) | 1984-02-17 |
| JPH0225132Y2 JPH0225132Y2 (en) | 1990-07-11 |
Family
ID=30278644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12180582U Granted JPS5925421U (en) | 1982-08-11 | 1982-08-11 | Instrument lighting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5925421U (en) |
-
1982
- 1982-08-11 JP JP12180582U patent/JPS5925421U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0225132Y2 (en) | 1990-07-11 |
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