JPH0473814U - - Google Patents
Info
- Publication number
- JPH0473814U JPH0473814U JP11600090U JP11600090U JPH0473814U JP H0473814 U JPH0473814 U JP H0473814U JP 11600090 U JP11600090 U JP 11600090U JP 11600090 U JP11600090 U JP 11600090U JP H0473814 U JPH0473814 U JP H0473814U
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- switch element
- limiting resistor
- current
- halogen lamp
- 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
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の１実施例の構成を示す回路図
、第２図は第１図に示す構成を含む電子メータの
外観を示す射視図、第３図は本考案の効果を説明
する特性図、第４図は従来のハロゲンランプを駆
動する回路を示す回路図、第５図は第４図に示す
構成を含む電子メータの外観を示す射視図である
。
１０……デジタル表示部、１１……アナログ表
示部、１２……筐体部、１３……周縁、１４……
ハロゲンランプ、１５，１６……電流制限抵抗、
１７……スイツチ素子、Ｖｘ……電源電圧、Ｖｐ
……ランプ電圧。
Fig. 1 is a circuit diagram showing the configuration of one embodiment of the present invention, Fig. 2 is a perspective view showing the external appearance of an electronic meter including the configuration shown in Fig. 1, and Fig. 3 explains the effects of the present invention. FIG. 4 is a circuit diagram showing a circuit for driving a conventional halogen lamp, and FIG. 5 is a perspective view showing the external appearance of an electronic meter including the configuration shown in FIG. 4. 10... Digital display section, 11... Analog display section, 12... Housing section, 13... Periphery, 14...
Halogen lamp, 15, 16... Current limiting resistor,
17...Switch element, Vx...Power supply voltage, Vp
...Lamp voltage.
Claims (1)
ログによるバーグラフ表示とを行いこれ等の表示
をハロゲンランプによりバツクライト照明をして
視認性を向上させる電子メータにおいて、前記ハ
ロゲンランプにランプ電源から印加するランプ電
圧をこのハロゲンランプの連続点灯における寿命
が所定寿命になるようにその輝度を低下させるた
めに設定する電流制限抵抗と、この電流制限抵抗
の両端に接続され指示測定の際に前記両端を短絡
するために表示面側に設けられたスイツチ素子と
を有し、このスイツチ素子をオンとすることによ
り視認性を向上させることを特徴とする電子メー
タ。 In an electronic meter that uses a liquid crystal to display digital numerical values and analog bar graph displays and backlights these displays with a halogen lamp to improve visibility, the lamp voltage applied to the halogen lamp from the lamp power source A current-limiting resistor is connected to both ends of this current-limiting resistor to short-circuit both ends at the time of indication measurement. and a switch element provided on the display surface side, and visibility is improved by turning on the switch element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11600090U JPH0473814U (en) | 1990-11-05 | 1990-11-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11600090U JPH0473814U (en) | 1990-11-05 | 1990-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0473814U true JPH0473814U (en) | 1992-06-29 |
Family
ID=31863811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11600090U Pending JPH0473814U (en) | 1990-11-05 | 1990-11-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0473814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0755509A (en) * | 1993-08-18 | 1995-03-03 | Nippondenso Co Ltd | Measuring instrument for vehicle |
-
1990
- 1990-11-05 JP JP11600090U patent/JPH0473814U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0755509A (en) * | 1993-08-18 | 1995-03-03 | Nippondenso Co Ltd | Measuring instrument for vehicle |