JP2000006686A - Instrument device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument device free from a complicated power supply structure, and capable of selectively and brightly shining a part of an indication part. SOLUTION: An instrument device is provided with a disk-like pointer 14 having an indication part, an indication plate 16 having an index part 17 to be indicated by the indication part, and a pointer driving means 27 to turn the disk-like pointer 14. The indication part 15 of the disk-like pointer 14 is provided with a first slit transmission part and a second slit transmission part. The first slit transmission part is irradiated from a rear part with a first light source to brightly shine, and the second slit transmission part is irradiated from a rear part with a second light source to brightly shine. A shading wall is provided between the first light source and the second light source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument, and more particularly to a pointer-type instrument having a pointer for indicating a display panel.

[0002]

2. Description of the Related Art As shown in FIG. 10, the applicant of the present invention has a pointing unit 3 comprising a first light guiding member 1 and a second light guiding member 2.
(In Japanese Patent Application No. Hei 10-44792)
issue). Such a pointer 4 includes a first light source 5 that irradiates the first light guide member 1 with light, and a second light source 6 that irradiates the second light guide member 2 with light. The pointer 4 is fixed to a rotating shaft 7 and rotates with the rotating shaft 7. When the first light source 5 and the second light source 6 are turned on, the region A (the emission surface 8 of the first light guide member 1) and the region B (the emission surface of the second light guide member 2) Both sides 9) shine. When only the second light source 6 is turned on, the area B of the indicator 3
Shines.

[0003]

According to the above-mentioned pointer 4, it is possible to illuminate a part of the indicator 3 by selectively turning on one of the first light source 5 and the second light source 6. Has advantages. However, since the power must be supplied to the first and second light sources 5 and 6 in a state where the pointer 4 is rotatable, the power supply structure may be complicated. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides an instrument device that does not require a complicated power supply structure and that can selectively shine a part of an instruction unit.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a disk-shaped pointer having an indicating portion comprising a first linear transmitting portion and a second linear transmitting portion; A display plate having an indicated index portion, a pointer driving means for rotating the disc-shaped pointer, a first light source for irradiating the first linear transmission portion with light, and a second linear transmission A second light source for irradiating the light to the portion, and a light shielding wall provided between the first light source and the second light source.

Further, the present invention has a third light source for irradiating the indicator portion with light, and a second light shielding wall provided between the second light source and the third light source. Things.

Further, the present invention has a semi-transmissive reflection plate provided in front of the disk-shaped pointer, and a light-emitting display for projecting display light to the semi-transmissive reflection plate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An instrument device has a disc-shaped pointer 14 having an indicator 15 and an indicator 17 indicated by the indicator 15.
And a pointer driving means 27 for rotating the disk-shaped pointer 14. Pointer 1 of the disc-shaped pointer 14
5 is a first linear transmission part 20 and a second linear transmission part 21
Having. The first linear transmissive portion 20 is illuminated and illuminated from behind by a first light source 29, and the second linear transmissive portion 21 is illuminated and illuminated from behind by a second light source 30. A light shielding wall 32 is provided between the first light source 29 and the second light source 30.

[0008]

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.

FIG. 3 is a front view of the instrument device. Reference numeral 10 denotes an instrument housing. The instrument housing 10 accommodates a digital speedometer 11, an analog tachometer 12, and a digital tachometer 13. In the analog tachometer 12, the indicator 15 of the disc-shaped pointer 14 indicates the indicator 17 (scale, number, etc.) of the display panel 16.
The digital speedometer 11 comprises a fluorescent display tube, and displays the speed of the vehicle by two sets of Japanese character segments. The digital tachometer 13 is composed of a fluorescent display tube, and displays the number of revolutions of the engine by four sets of Japanese character segments.

FIG. 4 is a perspective view of the disk-shaped pointer 14. The disk-shaped pointer 14 is formed by forming a light-shielding portion 19 on the surface of a substrate 18 made of a translucent resin (for example, polycarbonate) except for the indicator 15. The instruction section 15 has a first linear transmission section 20 and a second linear transmission section 21. The first linear transmission part 20 is a part illuminated by a first light source described later, and the second linear transmission part 21 is a part illuminated by a second light source described later.

FIG. 1 is a sectional view of the instrument device. Reference numeral 22 denotes a facing. The facing 22 has a locking claw (not shown).
Is provided, and the instrument housing 1 is
Locked to zero. 23 is a smoke cover (cover)
The smoke cover 23 is made of a translucent resin (for example, acrylic). The smoke cover 23 is provided with a locking claw (not shown), and is locked to the facing 22 by the locking claw. Reference numeral 24 denotes a half mirror (semi-transmissive reflection plate). The half mirror 24 is disposed at an angle of approximately 45 degrees with respect to the display plate 16 in front of the disk-shaped pointer 14. The smoke cover 23 is provided in front of the half mirror 24.

Reference numeral 25 denotes a liquid crystal display (light-emitting display). The display light L projected by the liquid crystal display 25 is projected on a half mirror 24. The liquid crystal display 25 includes a TFT (thin film transistor) 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 25 can display various characters, figures, and the like, and displays, for example, route guidance information. Reference numeral 26 denotes a circuit board on which the liquid crystal display 25 is mounted.

FIG. 2 is an enlarged sectional view of a main part of the instrument device.
Reference numeral 27 denotes a stepping motor (a pointer driving means). The stepping motor 27 is housed in the instrument housing 10. The stepping motor 27 has a rotating shaft 28, and the center of the disc-shaped pointer 14 is fixed to an end of the rotating shaft 28. 29 is a light emitting diode (first light source)
And the light emitting diode 29 is connected to the first linear transmission portion 2.
0 is irradiated with light. Reference numeral 30 denotes a light emitting diode (second light source), and the light emitting diode 30 irradiates the second linear transmission portion 21 with light. Reference numeral 31 denotes a bulb (third light source), which irradiates the indicator 17 of the display panel 16 with light.

A light shielding wall 32 is provided between the light emitting diode 29 and the light emitting diode 30. The light shielding wall 32 has a cylindrical shape, and is formed integrally with the instrument housing 10. Reference numeral 33 denotes a light shielding wall (second light shielding wall). The light shielding wall 33 is provided between the light emitting diode 30 and the bulb 31. Shading wall 33
Has a cylindrical shape and is formed integrally with the instrument housing 10. Reference numeral 34 denotes a circuit board.
Reference numeral 4 is provided on the rear surface of the instrument housing 10. Each light emitting diode 29, 30 and bulb 31 are connected to a circuit board 34.
It is connected to the. A microcomputer 35 for controlling the stepping motor 27 and the like is provided on the circuit board 34.

Next, display control of the meter device will be described with reference to the block diagram shown in FIG. A switch 36 outputs a signal for switching a display mode to the microcomputer 35. A rotation sensor 37 outputs a rotation speed signal to the microcomputer 35. A speed sensor 38 outputs a speed signal to the microcomputer 35. A navigation device 39 outputs route guidance information to the microcomputer 35.

Light emitting diodes 29, 30 and bulb 31
Is a microcomputer 35 via lighting circuits 40, 41 and 42, respectively.
Is connected to The stepping motor 26, the digital tachometer 13, the digital speedometer 11, and the liquid crystal display 25 are connected to the microcomputer 35 via drive circuits 43, 44, 45, and 46, respectively.

By operating the switch 36, the vehicle instrument device can be switched to the first to third display modes. The first display mode is an analog tachometer 12.
Is "display" (hereinafter referred to as ON), digital tachometer 1
3 is “non-display” (hereinafter referred to as “off”), the liquid crystal display 25
Is a display mode in which is turned off (see FIG. 6). The second display mode is a display mode in which the analog tachometer 12 is turned on, the digital tachometer 13 is turned off, and the liquid crystal display 25 is turned on (see FIG. 7). In the third display mode, the analog tachometer 12 is off, the digital tachometer 13 is on,
This is a display mode in which the liquid crystal display 25 is turned on (see FIG. 8). The digital speedometer 11 is on in each display mode.

In the case of the first display mode, the light emitting diodes 29 and 30 are turned on, and the first linear transmission part 20 and the second linear transmission part 21 of the instruction unit 15 are illuminated. Second
In the display mode described above, the light emitting diode 30 is turned on, the light emitting diode 29 is turned off, and only the second linear transmission portion 21 is illuminated. Therefore, the first linear transmission portion 20
Does not shine, so that the visibility of the liquid crystal display 25 is not hindered. In the case of the third display mode, each light emitting diode 2
The lamps 9 and 30 are turned off, and the bulb 31 illuminating the display panel 16 is also turned off.

According to the embodiment described above, by turning on one of the light emitting diodes 29 and 30, a part of the indicating section 15 can be illuminated. The light emitting diodes 29 and 30 are provided on a circuit board 34,
Unlike the conventional example, there is no need to provide the light sources 5 and 6 on the pointer 4, and the power supply structure does not become complicated. Note that, as shown in FIG.
And the indicator 17 may be illuminated.

Since the disk-shaped pointer 14 is formed of a transparent resin, the illumination of the linear transmission portions 20 and 21 becomes bright because light from the entire back surface guides the inside. Only the transmitting portions 20 and 21 may be formed of a translucent resin, and the other portions may be formed of an opaque resin in two colors. Also,
The disk-shaped pointer 14 is formed with a light blocking groove separating the linear transmission portions 20 and 21 along the cylindrical light shielding wall 32 so as to clarify the boundary between the linear transmission portions 20 and 21. For example, a light guide ring for transmitting light upward may be interposed in the illumination space partitioned by the cylindrical light shielding walls 32 and 33. In this case, light-shielding printing can be performed on the side surface of the light guide ring to form a light-shielding wall.

The light emitting diodes 33 and 34 may be of the same color or different colors. The pointer driving means in the above embodiment is the stepping motor 27,
For example, a cross-coil movement may be used. The first and second light sources are the light emitting diodes 29 and 30, but may be, for example, bulbs. The third light source is the bulb 31, but may be a cold cathode tube, for example.

[0022]

According to the present invention, there is provided a disc-shaped pointer having an indicating portion composed of a first linear transmitting portion and a second linear transmitting portion, a display plate having an index indicated by the indicating portion, Pointer driving means for rotating the disc-shaped pointer, a first light source for irradiating light to the first linear transmission portion, and a second light source for irradiating light to the second linear transmission portion A light shielding wall provided between the first light source and the second light source, and by illuminating one of the first light source and the second light source, the first line One of the linear transmission part and the second linear transmission part can be made to shine, and the power supply structure does not become complicated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an instrument device showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the instrument device showing the embodiment.

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

FIG. 4 is a perspective view of a disk-shaped pointer showing the embodiment.

FIG. 5 is a block diagram showing the embodiment.

FIG. 6 is an explanatory diagram of a first display mode showing the embodiment.

FIG. 7 is an explanatory diagram of a second display mode showing the embodiment.

FIG. 8 is an explanatory diagram of a third display mode showing the embodiment.

FIG. 9 is an enlarged sectional view of a main part showing another embodiment of the present invention.

FIG. 10 is an explanatory view of a pointer showing a conventional example.

[Explanation of symbols]

 14 Disc-shaped pointer 16 Display plate 17 Indicator 20 First linear transmission part 21 Second linear transmission part 23 Smoke cover (cover) 24 Half mirror (semi-transmissive reflection plate) 25 Liquid crystal display (light-emitting display) 27) Stepping motor (hand driving means) 28 Rotating shaft 29 Light emitting diode (first light source) 30 Light emitting diode (second light source) 31 Bulb (third light source) 32 Light shielding wall 33 Light shielding wall (second light shielding) wall)

Claims (3)

[Claims] 1. A disc-shaped pointer having an indicating portion composed of a first linear transmitting portion and a second linear transmitting portion, a display plate having an index portion indicated by the indicating portion, and the disc-shaped pointer Pointer driving means for rotating the, a first light source for irradiating light to the first linear transmission portion, a second light source for irradiating light to the second linear transmission portion, A light-shielding wall provided between said light source and said second light source. 2. The instrument device according to claim 1, wherein a third light source for irradiating the indicator with light, and a second light source provided between the second light source and the third light source. With shading walls,
An instrument device comprising: 3. The instrument device according to claim 1, wherein a semi-transmissive reflector provided in front of said disc-shaped pointer, and a light-emitting display for projecting display light onto said semi-transmissive reflector. A meter device comprising: