JPH11241929A - Measuring instrument device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring instrument device having an inexpensive pointer capable of being brightened with a plurality of patterns. SOLUTION: This measuring instrument device has a display board having an index part, and an pointer 11 having an indicating part 20 for indicating the index part. The pointer 11 is fixed to the turning shaft 33 of an pointer driving means, (stepping motor) and turned by the pointer driving means. The indicating part 20 of the pointer 11 has a first light guide member 36 and a second light guide member 37 provided in the rear of the first light guide member 36. The second light guide member 37 is arranged in such a manner that its second tip part 37a is situated in a position farther from the turning shaft 33 than a first tip part 36a of the first light guide member 36. The pointer 11 has a first light source 38 for irradiating a light to the rear end 36b of the first light guide member 36 and a second light source 39 for irradiating a light to the rear end 37b of the second light guide member 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument device, and more particularly to an instrument device provided with a light emitting type pointer.

[0002]

2. Description of the Related Art In the past, there has been proposed a pointer in which a pointing unit shines. For example, as shown in FIG. Is already known (Japanese Utility Model Application Hei 5-276)
No. 24). The indicator 1 of the pointer 4 shines green when supplied by the lighting circuit 5 in the direction of arrow P, and shines red when supplied in the direction of arrow N. Each of the light emitting diodes 2 and 3 is divided into three sets, and by switching the selection switch 6, the indicator 1 can be made to shine in a plurality of patterns. Select switch 6 is selectively 1
One or a plurality of contacts 6a, 6b, and 6c are made conductive. Normally, the selection switch 6 is connected to the contacts 6a, 6b, and 6c, and power is supplied from the power supply 5 in the direction of arrow P. Green light emitting diodes 2a, 2b, 2
Turn on c. Then, for example, when an abnormality occurs, the selection switch 6 is connected to the contact 6a, and power is supplied from the power supply 5 in the direction of the arrow N, so that the red light emitting diode 3a is turned on and a warning is displayed.

[0003]

The pointer 4 has the advantage that the indicator 1 can be illuminated in a plurality of patterns. However, there is a problem that a large number of light emitting diodes 2 and 3 are required, which is expensive. The present invention has been made in view of the above problem, and an object of the present invention is to provide an instrument device that can shine in a plurality of patterns and has an inexpensive pointer.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is an instrument device having a pointer having an indicator and a pointer driving means having a rotating shaft to which the pointer is fixed. The indicator has a first light guide member having a first tip and a second tip located at a position farther from the rotation axis than the first tip. A second light guide member provided on the rear side of the light member,
It has a first light source that irradiates the first light guide member with light, and a second light source that irradiates the second light guide member with light.

Further, the present invention has a lighting circuit for lighting one or both of the first light source and the second light source.

Further, according to the present invention, the first light source and the second light source are arranged so that a center line of the rotation axis is located between the first light source and the second light source. Things.

Further, according to the present invention, the first light guide member has a first emission surface from which light emitted from the first light source is emitted, and the second light guide member is provided with the first light guide member. And a second emission surface that smoothly connects to the emission surface of the second light source and emits light emitted from the second light source.

Further, the present invention has a semi-transmissive reflector disposed in front of the pointer, and a light-emitting display for projecting display light to the semi-transmissive reflector.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The instrument device has a display plate 14 having an indicator 17 and a pointer 11 having an indicator 20 for indicating the indicator 17. The pointer 11 is fixed to a rotating shaft 33 of the pointer driving means 32 and is rotated by the pointer driving means 32. The indicator 20 of the pointer 11 is provided with the first light guide member 36.
And a second light guide member 37 provided on the rear side of the first light guide member 36. The second light guide member 37 is configured such that the second end portion 37 a thereof is the first end portion 3 of the first light guide member 36.
It is disposed so as to be located farther from the rotation shaft 33 than 6a. The pointer 11 is located at the rear end 3 of the first light guide member 36.
The light source 6 includes a first light source 38 that irradiates light to the light guide 6b, and a second light source 39 that irradiates light to the rear end 37b of the second light guide member 37.

It is desirable that the first light source 38 and the second light source 39 are arranged so that the center line A of the rotation shaft 33 is located between the first light source 38 and the second light source 39. The weight balance of the pointer 11 is improved.

The first exit surface 42 and the second exit surface 43 are desirably connected smoothly, and the second tip 3
6a has no step and the pointer 11 has a good appearance.

A semi-transmissive reflector 45 disposed in front of the pointer 11 on the instrument device, and a display light L
And a light-emitting display 46 for projecting light.
When the display 6 is not displayed, the light sources 38 and 39 of the pointer 11 are turned on, and the area B and the area C of the indicator 20 are illuminated. When the light-emitting display 46 is displayed, the first light source 38 is turned on. The light may be turned off, the second light source 39 may be turned on, and only the area B may be illuminated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a vehicle instrument system will be described below with reference to the accompanying drawings. 1 to 6
Shows a first embodiment.

FIG. 3 is a front view of the instrument device. Reference numeral 7 denotes an instrument housing, in which instruments such as a speedometer 8, a fuel gauge 9 and a thermometer 10 are housed. Each of the instruments 8, 9, 10 has a pointer 11, 12, 13, respectively.
And a pointer-type instrument having dials 14, 15, and 16. Each of the dials 14, 15, 16 has an index portion 17, 1
8, 19 (scales, numbers, etc.) are printed and formed, and the indicating units 20, 21, 22 of the hands 11, 12, 13 indicate the index units 17, 18, 19, respectively. The instrument housing 7 includes a turn signal indicator 23, a headlight indicator 24, an airbag indicator 25, a side brake indicator 26, a battery indicator 27, an exhaust temperature indicator 28, and a hydraulic indicator 2.
Nine indicators are stored.

FIG. 2 is a sectional view of the instrument device. Reference numeral 30 denotes a facing, and the facing 30 has a locking claw (not shown).
Are provided, and the instrument housing 7 is
It is locked to. Reference numeral 31 denotes a smoke cover. The smoke cover 31 is made of a translucent resin (for example, acrylic). The smoke cover 31 is provided with a locking claw (not shown), and is locked to the facing 30 by the locking claw.

Reference numeral 32 denotes a stepping motor (a pointer driving means). The stepping motor 32 is housed in the instrument housing 7. The stepping motor 32 has a rotating shaft 33, and the end of the rotating shaft 33 has a pointer 11.
Is fixed. Reference numeral 34 denotes a bulb, which illuminates the dial 14 from behind. The valve 34 is fixed to the bottom wall 35 of the instrument housing 7 and is connected to a flexible wiring board 36 disposed on the rear surface of the bottom wall 35.

FIG. 1 is a sectional view of the pointer 11. Guideline 11
Has a first light guide member 36 and a second light guide member 37. Each of the light guide members 36 and 37 is made of a translucent resin (for example, polycarbonate). The second light guide member 37 has a distal end 37 a (second distal end) located farther from the rotation shaft 33 than a distal end 36 a (first distal end) of the first light guide member 36. It is arranged in. Reference numeral 38 denotes a light emitting diode (first light source), and the light emitting diode 38 is a rear end 36 of the first light guide member 36.
b is irradiated with light. Reference numeral 39 denotes a light emitting diode (second light source). The light emitting diode 39 emits light to the rear end 37 b of the second light guide member 37.

Each of the light emitting diodes 38 and 39 is arranged so that the center line A of the rotating shaft 33 is located between the light emitting diode 38 and the light emitting diode 39. Reference numerals 40 and 41 denote reflection layers, respectively. The reflection layers 40 and 41 are provided on the rear surfaces of the first and second light guide members 36 and 37, respectively. The light emitted by the light emitting diodes 38 and 39 is guided by the first and second light guide members 36 and 37, respectively, and emitted from the emission surfaces 42 and 43, respectively. Reference numerals B and C shown in FIG.
Areas corresponding to 3, 42.

As shown in FIG. 4, each light emitting diode 3
8, 39 are connected to a lighting circuit 44, and the light emitting diodes 38, 39 are wired so as to have opposite polarities. During normal times, the lighting circuit 44 sets the predetermined time T1.
(For example, 0.05 seconds)
The light emitting diodes 38 and 39 are turned on (see FIG. 5). The predetermined time T1 is extremely short, and the light emitting diodes 38 and 39 are visually recognized as being continuously lit.
When an abnormality occurs, the light emitting diode 39 is continuously turned on, and the light emitting diode 38 is turned on and off every predetermined time (for example, 0.5 seconds) (see FIG. 6). For example, when the pressure of the lubricating oil of the engine drops abnormally, a warning is displayed by turning on the hydraulic pressure indicator 29 and continuously lighting the area B of the hands and the area C intermittently.

7 to 10 show a second embodiment. The same portions as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 45 denotes a half mirror (semi-transmissive reflection plate).
4 are arranged at an angle of approximately 45 degrees. The smoke cover 31 is provided in front of the half mirror 45. Reference numeral 46 denotes a liquid crystal display (light emitting display), and the display light L projected by the liquid crystal display 46 is projected on the half mirror 45. The liquid crystal display 46 comprises a dot matrix type liquid crystal display element in which a number of pixels are arranged in a matrix, and a light source for illuminating the liquid crystal display element from behind. The liquid crystal display 46 can display various characters, figures, etc.
The route guidance information is displayed (see FIG. 8). Reference numeral 47 denotes a circuit board on which a liquid crystal display 46 is mounted.

The display / non-display of the liquid crystal display 46 is switched by a switch (not shown). When the liquid crystal display 46 is in the non-display state, the light emitting diodes 38 and 39 of the pointer 11 are turned on, and the area B and the area C of the indicator 20 are illuminated (see FIG. 9). When the liquid crystal display 46 is displaying, the light emitting diode 39 is turned on,
The light emitting diode 38 is turned off, and only the region B is illuminated. Therefore, since the area C of the indicator 20 does not shine, the visibility of the liquid crystal display 46 is not hindered (see FIG. 10).

As shown in FIG. 11, the light exit surface 42 of the first light guide member 36 and the light exit surface 4 of the second light guide member 37
It is desirable that the pointer 11 is smoothly connected, and there is no step near the first distal end portion 36a, so that the pointer 11 has a good appearance.

According to each of the embodiments described above, the pointer 11 can be made to shine in a plurality of patterns and the light source 3
The number of 8,39 is relatively small and good and inexpensive. In addition,
The first light source 38 and the second light source 39
It is preferable that the center line A of the rotating shaft 33 is located between the first light source 39 and the second light source 39, so that the weight balance of the pointer 11 is improved. The light emitting diodes 38 and 39 do not necessarily need to be arranged at the same distance from the center line A of the rotating shaft 33. That is, for example, the distance between the first light source 38 and the center line A may be larger than the distance between the second light source 39 and the center line A.

The light emitting diodes 38 and 39 may be of the same color or different colors. Further, the pointer driving means in each of the above embodiments is the stepping motor 32, but may be, for example, a cross coil type movement.
The light source for illuminating the dial 14 from behind is a bulb 34.
However, for example, a cold cathode tube may be used. In addition, the light sources that irradiate the first and second light guide members 36 and 37 with light are the light emitting diodes 38 and 39, but may be, for example, electroluminescence. Further, although the pointer 11 has the light guide members 36 and 37 stacked in two stages, for example, the light guide members may be stacked in three stages.

[0026]

According to the present invention, there is provided an instrument device comprising: a pointer having an indicating portion; and a pointer driving means having a rotating shaft to which the pointer is fixed, wherein the indicating portion has a first distal end portion. A first light guide member having a second tip portion at a position farther from the rotation axis than the first tip portion, and a second light guide member provided on the rear side of the first light guide member. And a light guide member of
The pointer has a first light source that irradiates light to the first light guide member, and a second light source that irradiates light to the second light guide member, and the pointer has a plurality of light sources. It can be made to shine with a pattern and is inexpensive.

According to the present invention, the first light source and the second light source are arranged so that a center line of the rotation axis is located between the first light source and the second light source. The weight balance of the pointer is improved.

Further, according to the present invention, the first light guide member has a first emission surface from which light emitted from the first light source is emitted, and the second light guide member is provided with the first light guide member. Has a second emission surface which is smoothly connected to the emission surface of the second light source and from which the light emitted from the second light source is emitted.

[Brief description of the drawings]

FIG. 1 is a sectional view of a pointer showing a first embodiment of the present invention.

FIG. 2 is a sectional view of the instrument device showing the embodiment.

FIG. 3 is a front view of the instrument device showing the embodiment.

FIG. 4 is a wiring diagram of a light source showing the embodiment.

FIG. 5 is an explanatory diagram of power supply of a lighting circuit according to the embodiment.

FIG. 6 is an explanatory diagram of power supply of a lighting circuit according to the embodiment.

FIG. 7 is a sectional view of an instrument device according to a second embodiment of the present invention.

FIG. 8 is a front view of a liquid crystal display showing the embodiment.

FIG. 9 is a display explanatory diagram of the instrument device showing the embodiment.

FIG. 10 is a display explanatory diagram of the instrument device showing the embodiment.

FIG. 11 is a sectional view of a pointer showing a third embodiment of the present invention.

FIG. 12 is an explanatory view of a pointer showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Pointer 20 Indicating part 32 Stepping motor (pointer driving means) 33 Rotating shaft 36 First light guide member 37 Second light guide member 38 Light emitting diode (first light source) 39 Light emitting diode (second light source) 42 Outgoing surface (first outgoing surface) 43 Outgoing surface (second outgoing surface) 45 Half mirror (semi-transmissive reflector) 46 Liquid crystal display (light-emitting display)

Claims (5)

[Claims] 1. An instrument device comprising: a pointer having an indicator, and a pointer driving means having a rotation axis to which the pointer is fixed, wherein the indicator has a first tip having a first tip. A light guide member, and a second light guide member provided at a rear side of the first light guide member, the second light guide member having a second tip portion at a position farther from the rotation axis than the first tip portion. And the indicator has a first light source that irradiates the first light guide member with light, and a second light source that irradiates the second light guide member with light. Instrumentation equipment characterized. 2. The instrument device according to claim 1, further comprising a lighting circuit for lighting one or both of the first light source and the second light source. 3. The instrument device according to claim 1, wherein the first light source and the second light source are arranged such that a center line of the rotation axis is located between the first light source and the second light source. An instrument device comprising a light source and said second light source. 4. The instrument device according to claim 1, wherein the first light guide member has a first emission surface from which light emitted from the first light source is emitted. The instrument device, wherein the second light guide member has a second emission surface that smoothly connects with the first emission surface and emits light emitted from the second light source. 5. The instrument device according to claim 1, wherein said semi-transmissive reflector is provided in front of said pointer, and said semi-transmissive reflector is provided with display light. A light emitting display for projecting light.