JPH01148816U - - Google Patents
Info
- Publication number
- JPH01148816U JPH01148816U JP4515988U JP4515988U JPH01148816U JP H01148816 U JPH01148816 U JP H01148816U JP 4515988 U JP4515988 U JP 4515988U JP 4515988 U JP4515988 U JP 4515988U JP H01148816 U JPH01148816 U JP H01148816U
- Authority
- JP
- Japan
- Prior art keywords
- illuminance
- illumination lamp
- transmitted
- indirect
- decrease
- 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 13
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案のメータ照明装置の実施例を示
す全体構成図である。第２図は本実施例における
スイツチの位置と発光デユーテイとの関係を示す
特性図である。第３図は従来のメータ照明装置の
概略断面図である。第４図は従来のメータ照明用
調光回路の構成図である。
１０……制御回路、１１……スイツチ、１２，
１３……トランジスタ、１４……透過照明ランプ
、１５……間接照明ランプ。
FIG. 1 is an overall configuration diagram showing an embodiment of the meter illumination device of the present invention. FIG. 2 is a characteristic diagram showing the relationship between the switch position and the light emission duty in this embodiment. FIG. 3 is a schematic cross-sectional view of a conventional meter illumination device. FIG. 4 is a block diagram of a conventional meter illumination dimming circuit. 10...control circuit, 11...switch, 12,
13...Transistor, 14...Transmitted illumination lamp, 15...Indirect illumination lamp.
Claims (1)
照明ランプおよび前記メータ表示板を間接光によ
り照明する間接照明ランプと、前記両ランプの照
度を増減するために操作される操作部材と、該操
作部材が照度増加側に操作されるときには、その
操作量に応じて前記間接照明ランプの照度増加よ
りも前記透過照明ランプの照度増加が大きくなる
ように、照度低下側に操作されるときには、その
操作量に応じて前記間接照明ランプの照度低下よ
りも前記透過照明ランプの照度低下が大きくなる
ように、前記両ランプへの供給電力を制御するラ
ンプ制御回路とを具備することを特徴とするメー
タ照明装置。 A transmitted illumination lamp that illuminates the meter display board with its transmitted light, an indirect illumination lamp that illuminates the meter display board with indirect light, an operating member that is operated to increase or decrease the illuminance of both lamps, and the operating member When the illuminance is increased, the increase in illuminance of the transmitted illumination lamp is greater than the increase in the illuminance of the indirect illumination lamp, and when the illuminance is decreased, the illuminance of the transmitted illumination lamp is increased according to the amount of operation. A meter illumination device comprising: a lamp control circuit that controls power supplied to both lamps so that a decrease in illuminance of the transmitted illumination lamp is greater than a decrease in illuminance of the indirect illumination lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4515988U JPH01148816U (en) | 1988-03-31 | 1988-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4515988U JPH01148816U (en) | 1988-03-31 | 1988-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01148816U true JPH01148816U (en) | 1989-10-16 |
Family
ID=31271479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4515988U Pending JPH01148816U (en) | 1988-03-31 | 1988-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01148816U (en) |
-
1988
- 1988-03-31 JP JP4515988U patent/JPH01148816U/ja active Pending