JPS5822092Y2 - indicating instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A light guide, such as an optical fiber, can be used to magnify the instrument reading.

However, conventional devices have the drawback of requiring a large number of optical fibers or a specially shaped light guide, making the instrument expensive.

The present invention eliminates these drawbacks and allows the display section to be easily shaped into a desired shape.

Fig. 1 is a cross-sectional view of an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view,
FIG. 3 is an enlarged view of the AA cross section in FIG. 2, and FIG. 4 is a view of the instruction surface.

As described above, a movable wire ring type electric meter includes a semi-cylindrical yoke 2, a magnetic steel core 3 disposed inside the yoke 2, and a movable wire ring 4 fitted to the magnetic steel core inside the opaque housing 1. A light shielding plate 5 is attached to the wire ring 4 of the movable part.
is installed.

Therefore, when a measurement input current is applied to the wire ring 4, the shielding plate 5 rotates by an angle corresponding to the magnitude of this current as shown by the arrow a in FIG.

An arcuate holding stand 6 is installed to face the shielding plate 5, and the base ends of the two optical fibers 7, 7... are arranged in the rotating direction of the shielding plate and attached to the holding stand 6. It is.

A plurality of rectangular plate-shaped transparent bodies 8, 8... are attached to the indication surface of the flat housing 1 so as to penetrate through the housing wall, and the two holes are inserted into the small holes drilled in the transparent bodies. Insert the tip of the optical fiber.

Furthermore, a light source rung 9 is provided at the bottom of the instrument body, and a shielding plate 5 is inserted between the base ends of the optical fibers 7, 7, . . . and the rung 9.

The optical fibers 7.7... have a diameter of, for example, 0.
It is a transparent acrylic round rod of about 8 mm and can be easily bent.

The transparent bodies 8, 8, . This is used as a reflective surface and without.

As mentioned above, the present invention arranges a plurality of transparent bodies on the indicating surface, uses the front surface of the transparent bodies as a light diffusing surface, and each transparent body has one transparent body.
The tips of one or more optical fibers are connected, and the base ends of the optical fibers are opposed to the light source through a light shielding plate.

Therefore, as the shielding plate 5 rotates in the direction of the arrow, light rays are sequentially incident on each optical fiber, and the light rays are guided to the transparent bodies 8, 8, . . . .

The light beam guided to the transparent body 8 is repeatedly reflected inside the transparent body as shown by the thin arrow in FIG.
shines almost evenly.

That is, as the shielding plate 5 rotates, the front surfaces 10 of the transparent bodies 8, 8, . . . shine sequentially to display the magnitude of the input.

Note that the transparent body 8 can be colored in a desired color, and the color can also be made different depending on the position.

The shape of the transparent bodies 8, 8, . . . on the normal indication surface is also as shown in FIG.

This can be arbitrarily selected, such as b or concentric circles C.

As described above, in the instrument of the present invention, the light emitting part on the indicator surface can be easily formed into a desired shape, and the optical fiber can be bent arbitrarily, so the relationship between the movable part and the indicator surface can be freely selected.

Furthermore, since the number of optical fibers is small and no special light guide is required, the instrument can be manufactured at low cost.

In addition, since the transparent body forming the light emitting part has no reflecting surface other than the light diffusing surface, the light rays that have been diffused inward on the diffusing surface not only do not leak to the outside but also return to the diffusing surface due to reflection. Since the light is incident on the light, its brightness increases and the entire surface shines evenly.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an embodiment of the present invention, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is an enlarged view of the A-APIfi plane of Fig. 2, Fig. 4 is a diagram showing the instruction plane, Fig. 5 The figure shows another example of the instruction surface. In the figure, 1 is a housing, 2 is a yoke, 3 is a magnetic steel core,
4 is a wire ring, 5 is a light shielding plate, 6 is a holding stand, I is an optical fiber, 8 is a transparent body, 9 is a light source lamp, 10 is a front surface of the transparent body, and 11 is a reflective film.

Claims (1)

[Scope of utility model registration request] A light beam shielding plate is attached to a movable part that rotates by an angle according to the measurement input, and the proximal ends of a plurality of optical fibers are arranged in the rotation direction of the shielding plate to face one light source, and the optical fibers are connected to the light source. A plurality of transparent bodies are inserted between the base end of the fiber, the front surface is a light diffusing surface of a desired shape, and a light reflecting film is coated on the surface other than the diffusing surface. An indicator device in which the tips of the plurality of optical fibers are connected to a transparent body at a desired position, respectively.