JPS63115719U

JPS63115719U -

Info

Publication number: JPS63115719U
Application number: JP602587U
Authority: JP
Priority date: 1987-01-21
Filing date: 1987-01-21
Publication date: 1988-07-26

Description

[Brief explanation of the drawing]

第１図は本考案による照明装置を採用した計器
の断面図、第２図は第１図の文字板の一例を示す
断面図、第３図は第２図の文字板の正面図、第４
図乃至第９図は第１図の文字板の他の例をそれぞ
れ示す断面図、第１０図は本考案による装置の導
光板の一実施例を示す斜視図、第１１図は第１０
図中の一部分の平面図、第１２図は従来の照明装
置を採用した計器の断面図、第１３図は第１２図
の文字板の正面図、第１４図は第１２図の文字板
の断面図である。３ａ……導光板、３ａ―１……光導入部、３ａ
―１１……第１の曲面、３ａ―１２……第２の曲
面、３ａ―２……光導出部、５ａ……電球、８…
…指針軸、９……指針、２０……文字板、２０ａ
……透明、半透明基部材、２０ｂ……有彩色半透
明層、２０ｃ……白色半透明層、２０ｄ……黒色
不透明層、２０ｅ……有彩色半透明層。 Fig. 1 is a cross-sectional view of a meter employing the illumination device according to the present invention, Fig. 2 is a cross-sectional view showing an example of the dial plate in Fig. 1, Fig. 3 is a front view of the dial plate in Fig. 2, and Fig. 4
9 to 9 are sectional views showing other examples of the dial in FIG. 1, FIG. 10 is a perspective view showing an embodiment of the light guide plate of the device according to the present invention, and FIG.
A plan view of a portion of the figure, Figure 12 is a cross-sectional view of an instrument using a conventional illumination device, Figure 13 is a front view of the dial in Figure 12, and Figure 14 is a cross-section of the dial in Figure 12. It is a diagram. 3a...Light guide plate, 3a-1...Light introduction part, 3a
-11...First curved surface, 3a-12...Second curved surface, 3a-2...Light guide portion, 5a...Light bulb, 8...
...Pointer shaft, 9...Pointer, 20...Dial plate, 20a
...Transparent, translucent base member, 20b...Chromatic semitransparent layer, 20c...White semitransparent layer, 20d...Black opaque layer, 20e...Chromatic semitransparent layer.

Claims

[Claims for Utility Model Registration] A dial is provided on the front side of a light guide plate made of a translucent material and has a light introduction part formed at the periphery and a light output part formed approximately in the center, and a dial plate is provided at the rear side. A pointer driving section for driving a pointer made of a translucent material is attached, a pointer shaft of the pointer driving section is passed through the light guiding section, and a light receiving section of the pointer is disposed, and a light introducing section of the light guide plate is provided. In the lighting device for an instrument that illuminates the inside of the dial and hands by introducing light from a light source into the dial, at least a portion of the dial other than letters, scales, etc. is formed to be transparent, and the transparent portion The front surface of the dial is illuminated by the light that passes through the light guide plate, and the light guide plate has a curved surface that focuses the light from the light source on the light guide plate, and a curved surface that focuses the light from the light source on the light guide plate, and diffuses the light from the light source over the entire surface of the light guide plate. An instrument lighting device characterized by having a curved surface.