JPH0635134Y2 - Indicator instrument - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an indicating instrument for indicating the traveling state of a vehicle, a ship, an aircraft, etc. The present invention relates to an indicating instrument that gives an instruction by shaking light.

[Conventional technology]

A conventional indicating instrument of this type has, for example, a structure as shown in FIGS. 4 and 5. In the figure, 1
Is a laser light emitting unit, 2 is a laser mirror for changing the optical path by reflecting the laser light at a high rate (usually 99.5% or more) with respect to a specific wavelength and incident angle of the laser light, and 3 is an optical path for scattering the laser light inside. A diffuser plate made of transparent acrylic or the like mixed with fine particle pigments so that it can be seen with the naked eye, 4 is a dial plate formed around the diffuser plate 3 and has a scale or a letter 4a printed thereon, and 6 is a laser mirror 2 for instrument movement 8 rotation pointer shaft 7
A holding stud 9 for integration with a driving circuit of the instrument movement 8 is for rotating the pointer shaft 7 in response to an input signal such as a traveling speed signal. Reference numeral 10 is a drive circuit for causing the laser light emitting unit 1 to emit laser light, and 11 is arranged behind the diffusing plate 3 and the dial 4, and is, for example, a multi-position positive for indicating a direction indication 11a and a rotation speed display 11b. Type liquid crystal display plate, and behind this positive type liquid crystal display plate 11, there is provided a light diffusing plate 13 for illuminating the back of the positive type liquid crystal display plate 11 with light from the illumination lamp 12 substantially uniformly. There is. 14 indicates an instrument housing.

And in such an indicating instrument, the positive type liquid crystal display panel 11
By driving and lighting the illuminating lamp 12, the displays 11a and 11b of the positive type liquid crystal display plate 11 are positively displayed, and at the same time, the instrument movement 8 is driven according to the instruction input, whereby the reflection angle of the laser mirror is increased. The laser light emitted from the laser light emitting unit 1 is radiated into the diffusing plate 3 as a result, and as a result, it is reflected by the fine particle pigments mixed in the diffusing plate 3 and the line as shown in FIG. Pseudo pointer 5
Are formed.

[Problems to be solved by the device]

However, in such a conventional multi-type indicator using laser light, since the optical path (pseudo pointer 5) pointing the scale 4a and the display 11b is shared by one, the pseudo pointer 5 At the tip of the laser beam, there was a problem that the laser light was attenuated to decrease the brightness and the width of the display of the pseudo pointer was widened due to diffusion, making it difficult to confirm the outside indication value, that is, the visibility was poor. .

[Means for Solving the Problems]

The present invention has been made in view of such conventional problems. In a multi-type display panel having a plurality of display portions, the front surface or the back surface of the display board receives a laser beam and receives the laser beam. Roughness of a triangular cross section consisting of an inclined surface that reflects the laser light in the front direction of the display plate is formed in a plurality corresponding to the plurality of display units, and the display value of each display unit in the multi-type indicator is set to one. An object of the present invention is to provide an indicating instrument that can be clearly indicated by a pseudo pointer.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiment shown in FIGS. 1 to 3. The same parts of the structure of this embodiment and the structure described in the conventional example are the same as those used in the conventional example. The description of the same structural parts will be omitted.

That is, the present embodiment has a feature in the display plate structure of the indicating instrument that forms the pseudo pointer by the laser light L, and other move structures and the like are omitted as in the conventional example.

In FIG. 1, reference numeral 21 is a display plate, and this display plate 21 is a plate material formed in a substantially semicircular shape, and the display plate 21 is formed of transparent resin. Board 21
The peripheral portion of the scale is, for example, a scale for displaying the engine speed,
A display portion 23 having numerical values 22 is formed, and the other portions are formed on a pointer display portion 24. A display 25 for displaying the vehicle speed is provided at the center of the back surface of the pointer display unit 24. Further, inside the pointer display portion 24, the laser light L emitted from the laser light emitting unit 1 is received and reflected,
A fine particle pigment for displaying the pseudo pointer 26 is mixed on the surface of the display plate 21. Further, on the surface of the display plate 21, a sawtooth shape is formed by an inclined surface 27 that directly receives the laser light L and a light shielding surface 28 that is formed from the tip of the inclined surface 27 in the thickness direction of the display plate 21. The first display portion 29 and the second display portion 29 'composed of only the inclined surface 27' are formed. Further, the sawtooth-shaped display portions 29, 29 'are, as shown in FIG. 3 (a), an incident surface parallel to the thickness direction of the display plate 21.
28a and a first display portion 29 including a display portion 29a inclined from the front end of the incident surface 28a toward the rear surface of the display plate 21, and a second display portion 29 'which is similarly formed. It may be. Further, at the peripheral surface of the pointer display portion 24, that is, at the boundary between the display portion 23 and the pointer display portion 24, approximately 45 degrees for reflecting the laser light L passing through the pointer display portion 24 toward the viewer. The reflective surface 30 of is formed. Furthermore, this reflective surface
On the front surface of 30, that is, the front surface of the peripheral portion of the pointer display portion 24, a low-transmission filter 31 for passing the laser light L reflected toward the viewer is attached. This low transmission filter
31, more specifically, the filter is
The strongly reflected light of the laser light L reflected in the forward direction by the reflecting surface 30 can pass therethrough, but the weakly reflected light reflected by the reflecting surface 30 is a low transmission filter having a characteristic of being shielded.

Therefore, according to this embodiment, the laser light L emitted from the laser emitting unit 1 is reflected by the reflection mirror 2 and introduced into the display plate 21, but this laser light L is formed on the surface of the display plate 21. First display section 29 and second display section 29 '
Due to the inclined surface, the pseudo pointer 26 is constituted by the two-stage light emitting display portions 26 'and 26 "as shown in FIGS. 1 (b) and 3 (b). 'Displays the vehicle speed, and the other light-emitting display
The number of revolutions is displayed by 26 ″. The display can be switched between the speed display and the rotation display, for example, as shown in FIGS.
This can be performed by controlling the drive circuit shown in the figure. Further, the tip portion of the pseudo pointer 26 is reflected by the reflecting surface 30 and refracted toward the viewer. Among the refracted reflected light, the weak light diffused by the reflecting surface is the low transmission filter 31. Since the strong beam light reflected by the reflecting surface is absorbed by the low-transmission filter 31 and is not transmitted forward, only the strong brightness of the laser light transmitted through the low-transmission filter 31 is clear. Since it is displayed, the indication value by the tip of the pseudo pointer 26 becomes clear, and the indication characteristic is enhanced.

[Effect of device]

As described above, according to the present invention, the movement 8 having the rotating shaft 7 that rotates by a predetermined angle according to the measured amount, the display plate 21 indicating the measured amount, and the rotating shaft 7 provided on the rotating shaft 7 together with the rotating shaft 7. In the indicator instrument provided with the reflection optical means 2 which rotates and reflects the light from the light source 1 which emits a beam of light from the side of the display plate toward the display plate 21, the surface of the display plate 21. Alternatively, since the back surface of the indicator board is provided with a plurality of saw-tooth-shaped irregularities formed by an inclined surface that receives the laser light L and reflects the received laser light L in the front direction of the display board, the display board according to the present invention Since a plurality of light emitting display portions that are stepwise arranged in the irradiation direction of the laser light L are formed on the front surface or the back surface of 21, a plurality of graduations corresponding to the plurality of issuing display portions are provided to form one Pseudo pointer 26 displays multiple measured quantities It is possible and effective as a multi-instrument. By applying the present invention to a single-type indicator instead of a multi-type indicator, and increasing the number of saw-tooth-shaped irregularities, the pseudo-pointer tip can be clearly illuminated and the pointer can be displayed with the same width. Needless to say, the visibility is improved.

[Brief description of drawings]

FIG. 1 (a) is an explanatory side view showing an embodiment of an indicating instrument according to the present invention, FIG. 1 (b) is an explanatory view of its display form, FIG. 2 is its explanatory front view, and FIG. 3 (a). ) Is a side view showing another embodiment of the present invention, FIG. 3 (b) is a view showing the display form, and FIGS. 4 and 5 are sectional views and front views of a conventional example. 21 ... Display plate, 22 ... Scale value, etc. 23 ... Display section, 24 ... Pointer display section 25 ... Display, 16 ... Pseudo pointer 27, 27 '... Inclined surface, 28 ... Shading surface 28a ... Incident surface, 29 ... First Display unit 29 '... Second display unit, 29a ... Display unit 30 ... Reflecting surface, 31 ... Low transmission filter

Claims (1)

[Scope of utility model registration request] 1. A movement (8) having a rotating shaft (7) which rotates a predetermined angle according to a measured amount, a display plate (21) showing the measured amount, and a rotary shaft (7) provided on the rotating shaft (7). A reflection optical means (2) which rotates together with the rotation shaft (7) and reflects light from a light source (1) which emits a beam of light from the side of the display plate toward the display plate (21). In the indicating instrument equipped with, a sawtooth-shaped object comprising a front surface or a back surface of the display plate (21) and an inclined surface for receiving the laser light (L) and radiating the received laser light (L) in the front direction of the display plate. An indicating instrument characterized in that a plurality of irregularities are formed in the laser light (L) emission direction.