JPH02110820U - - Google Patents
Info
- Publication number
- JPH02110820U JPH02110820U JP1889389U JP1889389U JPH02110820U JP H02110820 U JPH02110820 U JP H02110820U JP 1889389 U JP1889389 U JP 1889389U JP 1889389 U JP1889389 U JP 1889389U JP H02110820 U JPH02110820 U JP H02110820U
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- instrument
- dial
- 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
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000012780 transparent material Substances 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 1
Landscapes
- Details Of Measuring Devices (AREA)
- Details Of Measuring And Other Instruments (AREA)
Description
第１図はこの考案の一実施例による計器の照明
装置の構成を示す断面図、第２図は光透過調整手
段の一例を示す説明図、第３図は遮光板で光源の
光量を調整するの説明図、第４図は他の実施例に
よる計器の照明装置の構成を示す断面図、第５図
は従来の計器の照明装置の構成を示す断面図、第
６図は第５図に示した計器の照明装置の一部分を
拡大した断面図である。
２…計器内機、３，１３…導光板、３ａ，１３
ａ…光導入部、１３ｂ…光導出部、４…文字板、
６Ａ，６Ｂ…光源、１０…指針、１５…光透過調
整手段（拡散板）。
Fig. 1 is a sectional view showing the configuration of an instrument illumination device according to an embodiment of this invention, Fig. 2 is an explanatory view showing an example of a light transmission adjusting means, and Fig. 3 is a light shielding plate that adjusts the light intensity of the light source. FIG. 4 is a sectional view showing the configuration of a lighting device for a meter according to another embodiment, FIG. 5 is a sectional view showing the configuration of a conventional lighting device for a meter, and FIG. FIG. 2 is an enlarged cross-sectional view of a portion of the illumination device of the meter. 2... Instrument internal unit, 3, 13... Light guide plate, 3a, 13
a...Light introduction part, 13b...Light guide part, 4...Dial board,
6A, 6B... Light source, 10... Pointer, 15... Light transmission adjustment means (diffusion plate).
Claims (1)
前面に、周辺部に光導入部を設けた導光板を取り
付け、この導光板の前面に文字、目盛など以外の
部分を透光性部分とした文字板を配し、前記導光
板の光導入部および背面からの入射した光源の光
を導光して前記文字板の背面に入射させ、前記文
字板の透光性部分を透過させて前記文字板の全面
を照明する計器の照明装置において、 前記導光板の背面に、前記背面に入射する前記
光源の光を周辺部よりも中央部が多くなる光透過
調整手段を設けたことを特徴とする計器の照明装
置。 (2) 導光板の背面中央部に光を文字板の中央部
に反射する反射面を設けたことを特徴とする請求
項１記載の計器の照明装置。 (3) 指針を非透光性の材料で構成したことを特
徴とする請求項１または２記載の計器の照明装置
。[Scope of Claim for Utility Model Registration] (1) A light guide plate with a light introduction part on the periphery is attached to the front of the instrument internal unit that drives the pointer according to the measured quantity, and letters and scales are attached to the front of the light guide plate. A dial plate is arranged in which parts other than the light-transmitting part are translucent parts, and the light from the light source incident from the light introduction part of the light guide plate and the back side is guided and made to enter the back side of the dial plate. In an instrument lighting device that illuminates the entire surface of the dial by transmitting a light-transmitting part of the light guide plate, a light source is provided on the back surface of the light guide plate so that the light from the light source that is incident on the back surface is more concentrated in the center than in the peripheral portion. An illumination device for an instrument, characterized in that it is provided with a transmission adjustment means. (2) The lighting device for an instrument according to claim 1, further comprising a reflective surface provided at the center of the back surface of the light guide plate to reflect light to the center of the dial. (3) The lighting device for an instrument according to claim 1 or 2, wherein the pointer is made of a non-transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1889389U JPH02110820U (en) | 1989-02-22 | 1989-02-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1889389U JPH02110820U (en) | 1989-02-22 | 1989-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02110820U true JPH02110820U (en) | 1990-09-05 |
Family
ID=31233934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1889389U Pending JPH02110820U (en) | 1989-02-22 | 1989-02-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02110820U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS477013U (en) * | 1971-02-15 | 1972-09-26 | ||
| JPS5129662A (en) * | 1974-05-07 | 1976-03-13 | Bendt Anders |
-
1989
- 1989-02-22 JP JP1889389U patent/JPH02110820U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS477013U (en) * | 1971-02-15 | 1972-09-26 | ||
| JPS5129662A (en) * | 1974-05-07 | 1976-03-13 | Bendt Anders |
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