JPS585215Y2 - Light indicator meter - Google Patents

Description

[Detailed description of the invention] The present invention relates to a scale indicating mechanism for meters used in automobiles, other vehicles, and various other devices. This is to provide a light indicating meter that can be used.

Meters currently in use, such as speedometers in automobiles, indicate the speed scale on a scale plate by rotating a clock hand-like pointer, but under adverse conditions such as at night, there may be insufficient lighting or Due to uneven lighting, etc., it is often difficult to confirm the position of the pointer.

This method has the disadvantage that more attention than necessary is required in order to reliably visually recognize the pointer.

The present invention solves the above-mentioned drawbacks of the conventional meter consisting of an indicating mechanism using a pointer by adopting the configuration described in the claims of the utility model registration. The present invention provides an optical indicator type meter which is capable of simultaneously giving instructions using a conventional pointer.

The present invention will be explained below with reference to the drawings.

The illustrated example shows one embodiment of the optical indicator type meter of the present invention applied to a speedometer of an automobile.

Reference numeral 1 denotes a meter case, and a meter drive unit 3 is disposed within the case 1 for converting a speed signal sent through a meter cable 2 into a drive torque proportional to the speed signal.

An opaque disc 5 made of metal or synthetic resin is fixed to the rotation instruction shaft 4 of the meter drive unit 3, and is configured to rotate together with the shaft 4. A single narrow slit 6 is cut in the radial direction.

The disc 5 is fixed to the front part of the meter case 1 and is placed as close as possible to the back surface of a translucent scale plate 7 on which a speed scale, characters, etc. are displayed.

A light-shielding wall 8 is provided on the back side of the scale plate 7 to surround the circumference of the disc 5, so that the light from the illumination lamp 9 disposed at the rear of the meter case 1 is transmitted to the disc 5 and the scale plate 7. It is constructed so that it does not leak into the gap between the

Note that if the disc 5 and the scale plate 7 are arranged close enough to each other that light leakage can be ignored, the light shielding wall 8 may be omitted.

Further, in the illustrated example speedometer, a pointer 11 is fixed to the tip of the rotation indicating shaft 4 extending through the center hole 10 of the scale plate 7, and the pointer 11 provides an indication using the pointer at the same time as the optical instruction of the present invention. It is structured to be comfortable.

In this case, the pointer 11 is attached to the rotation instruction shaft 4 so that its position coincides with the slit 6 formed in the disk 5, and the pointer 11 has a slit 6 formed in the disk 5 in the center of the pointer 11.
A slit 12 of the same medium size is hollowed out.

13 is a transparent cover such as glass attached to the front of the meter case 1.

In the light indicating meter of the present invention having the above structure, when the illumination lamp 9 in the meter case 1 is turned on, the light from the lamp illuminates the disc 5 and the scale plate 7 from inside.

As a result, the speed scale, characters, etc. calibrated on the outer circumferential side of the translucent scale plate 7 are brightly illuminated, and at the same time, the light from the illumination lamp 9 passes through the slit 6 portion of the opaque disc 5, and the slit 6 and one thin line of bright light is projected on the back surface of the semi-transparent scale plate 7.

Therefore, when a driver or the like looks at the scale plate 7 of the meter from the outside, the bright line of light is located within the slit 12 of the pointer 11 located on the front of the scale plate 7 and is visually recognized as a single line of light. , the meter can be indicated by the bright line of light at the same time as the pointer 11 indicates.

When the speed of the car changes, the meter drive unit 30 rotation instruction shaft 4
rotates by a predetermined angle in proportion to this, and the disc 5 and the pointer 11 rotate together with the shaft 4, so that the speed can be displayed by both the bright line of light and the pointer.

If it is desired to display the speed using only the pointer 11 during the daytime, the illumination lamp 9 may be turned off.

Furthermore, a filter made of colored transparent resin or glass is fitted into the slit 6 portion of the disc 5, and the scale plate 7
If the bright lines projected on the screen are colored light, the bright lines can be more reliably recognized.

The optical indicator meter of the present invention has the above-mentioned structure (9), and has an indicator mechanism using a pointer as well as an optical indicator mechanism, and a thin bright line of light from the optical indicator mechanism is emitted through a slit cut out in the pointer. Because it is configured to be visible at the same time, the meter reading can be reliably read under any circumstances, such as when it is directly exposed to external light (sunlight) or when the surroundings are dark such as at night. devices and equipment whose brightness constantly changes depending on the situation;
For example, when used in a meter in a car or the like, the reading of the meter indication can be made more reliable, and the operability and safety of the apparatus and equipment can be further improved.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of essential parts of an embodiment in which the optical indicator meter of the present invention is applied to an automobile speedometer, Figure 2 is an enlarged plan view of the pointer 2...3 are the same as Figure 1. It is a longitudinal side view of the optical indicator type meter shown. 1...Meter case, 3...Meter drive unit, 4...Rotation instruction shaft, 5...Disc, 6...Slit , 7... Scale plate, 9
・・・・・・Lamp for lighting.

Claims (1)

[Scope of utility model registration request] An opaque disc is fixed to the rotation instruction shaft of the meter drive unit,
The disc is placed as close as possible to the back surface of a translucent scale plate located at the front of the meter case, and a slit is formed in the disc in the radial direction. An illumination lamp is provided behind the disk in the meter case, and a clock hand-shaped pointer is provided on the front of the scale plate to align with the slit in the disk to control the rotation of the meter drive unit. 1. An optical indicator meter, which is fixed to the tip of an indicator shaft, and has a slit hollowed out inside the pointer, the shape of which is substantially the same as the slit in the disc.