JPH0517616Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention is an analog type indicating instrument, and more specifically relates to an indicating instrument configured to give instructions by waving a beam of light such as a laser beam. be.

[Background of the idea]

In general, an analog indicating instrument has a dial on which a scale is displayed, a pointer that indicates the scale on the dial, and a mechanical or electrical input that indicates the above pointer according to the quantity to be measured. It is composed of a movement that rotates by a predetermined angle.

By the way, in the case of such an analog indicating instrument, the pointer is supported and fixed in a cantilevered manner to the pointer shaft of the movement, so in order to make the pointer rotate smoothly, the pointer is fixed to the pointer shaft of the movement. A weight (protrusion) for balance adjustment must be provided at the rear end, which increases the weight of the entire pointer. In other words, if you try to make the pointer longer or thicker to make it easier to see the movement of the pointer, the weight of the pointer will increase, making it difficult to use a long pointer.
If you are forced to use a minute hand, you will have to use a movement with a large drive torque that can drive the pointer, which will make the entire instrument larger and require a stronger drive input signal. That will happen.

In addition, the warning display mechanism provided in a part of a conventional analog meter is provided with a colored warning lens 21 on a part of the meter housing 20, and on the back side of the warning lens, as shown in FIG. 3A. , an illumination bulb 22 is provided, and a warning is issued by lighting the illumination bulb 22, and the one shown in FIG.
A light emitting diode 23 is arranged, and by lighting the light emitting diode 23, a colored display is made without using a warning lens. However, with such a warning display mechanism,
Many components such as the illumination bulb 22 and the light emitting diode 23 are required, and the structure is also complicated, resulting in high cost.

[Purpose of invention]

The present invention was developed with a focus on this problem, and uses beam light such as a laser beam to indicate the amount to be measured on the scale of the display board, which is essential for analog indicating instruments, in a pseudo-guidance manner. This makes it possible to perform analog display while omitting the pointer, and allows the indicating length and width to be freely set without increasing the drive torque of the movement. It is an object of the present invention to provide a novel indicating instrument capable of providing effective instructions and warnings with a simple structure by enabling a warning display section to display light.

[Example of idea]

The present invention will be explained in detail below based on the embodiment shown in FIGS. 1 and 2.

In Figure 1, 1 is a movement,
This movement 1 is provided with a rotating shaft that rotates by a predetermined angle depending on the amount to be measured, and this rotating shaft 2 has an arm 3 formed in a substantially U-shape on the side.
The lower end of the arm 3 is fixed, and a second reflecting mirror 4 is attached to the upper end of the arm 3.
Reference numeral 5 denotes a first reflecting mirror arranged such that the center of its reflecting surface is located on the extension of the axis of the rotation axis, and this flat first reflecting mirror 5 reflects the radiation emitted from the laser oscillator 6. The second reflecting mirror 4 is arranged to reflect the laser beam 7 . Reference numeral 8 denotes an annular display plate made of transparent or translucent resin, and a small amount of light-diffusing dye is mixed inside the display plate 8 so that the side surface of the display plate 8 is A laser beam irradiated into the display board 8 from the display board 8 is displayed as a pseudo pointer. Also, a warning display section 9 as shown in FIG.
However, this warning display section 9 contains a large amount of light-diffusing dye. 10 is the display board 8
Printed parts such as letters and scales on the back side of 1
Reference numeral 1 denotes a light shielding plate superimposed on the back surface of the display section 8, 12 a decorative cap attached to the central hole of the annular display panel 8, and 13 a light shielding plate for illuminating the printing section with light reflected from the circumferential surface of the display panel 8. Showing a lighting lamp.

Next, to describe its operation, when a signal corresponding to the amount to be measured is input to the movement 1, the rotating shaft 2 rotates by a predetermined angle in response to the input, and as a result, the second reflecting mirror 4 It is rotated around the extension line of the second axis. At this time, when the laser beam 7 emitted from the laser oscillator 6 is irradiated onto the second reflecting mirror 4 via the first reflecting mirror 5, the second reflecting mirror 4 is
The reflected laser beam reflected from the reflecting mirror 4 is
Since the light diffusing agent dye mixed in the display plate 8 emits light from the side surface of the display plate 8, the laser beam irradiated to the display plate 8
On the front of the display board 8, it is displayed in a linear manner as a pseudo pointer 14. The indicated value by this pseudo pointer 14 increases, and the pseudo pointer 1
When the tip of 4 points to the warning display section 9, the laser beam that displays the pseudo pointer 14 enters the warning display section 9, causing the warning display section 9 to emit light. This is what is displayed. Therefore, according to this embodiment, the laser beam 7 emitted from the laser oscillator 6 causes the pseudo pointer 1 to
4 is displayed, and at the predetermined instruction value of the pseudo pointer, even the warning display section 9 emits light. This has the effect of providing an indicating instrument with a simple structure and excellent economic efficiency.

[Summary of the idea]

As described above, the present invention provides a movement 1 having a rotating shaft 2 that rotates by a predetermined angle according to the amount to be measured.
, a display plate 8 which is made of a translucent or semi-transparent material mixed with a light diffusing agent and indicates the amount to be measured, a light source 6 which emits a beam-shaped light 7 , and a light source 6 provided on the rotating shaft 2 . Reflective optical means 4 and 5 rotate together with the rotation shaft 2 and allow the light from the light source 6 to enter from the side surface of the display panel 8 toward the display section, and the display panel 8 includes reflective optical means 4, 5 that This indicator is characterized by having a warning display section 9 having a mixing ratio different from that of the light diffusing agent.

[Effect of idea]

Therefore, according to the indicator of this invention, it is possible to optically form a pseudo pointer, cause the pseudo pointer 14 to wave according to the measured quantity input to the movement, and read the indicated value on the display board. At the same time, at the predetermined instruction value of the pseudo pointer, even the warning display section 9 emits light.
It is not necessary to provide the drive mechanism, and this has the effect of providing an indicating instrument with a simple structure and excellent economic efficiency.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the indicating instrument according to the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is an explanatory view of a conventional example. . DESCRIPTION OF SYMBOLS 1... Movement, 2... Rotating shaft, 3... Arm, 4... Second reflecting mirror, 5... First reflecting mirror, 6... Laser oscillator, 7... Laser beam,
8... Display board, 9... Warning display section, 10... Printing section, 11... Light shielding plate, 12... Decorative cap, 1
3...Illumination lamp, 14...pseudo guideline.

Claims (1)

[Scope of utility model registration request] A movement 1 having a rotating shaft 2 that rotates by a predetermined angle according to the amount to be measured, a display plate 8 made of a translucent or semi-transparent member mixed with a light diffusing agent and indicating the amount to be measured, and a beam-shaped A light source 6 that emits light 7 of
and reflective optical means 4 and 5 provided on the rotating shaft 2 and rotating together with the rotating shaft 2 to allow light from the light source 6 to enter from the side surface of the display panel 8 toward the display section. Additionally, the indicator plate 8 is characterized in that it has a warning display part 9 having a mixing ratio different from that of the light diffusing agent mixed therein.