JP2004340871A - Instrument for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To share a light source for illuminating an ambient display part for abnormal times and a light source for illuminating an alarm display part while securing a visibility of a display part for measured quantities. <P>SOLUTION: This instrument for vehicles is provided with: a display panel 10 provided with a scale part, a numeral part, and the alarm display part; the ambient display part 63 for anomalous times arranged around the display panel 10 to be visually recognized as the background of the alarm display part; a first light source 51 arranged at a location opposed to the alarm display part on the backside of the display panel 10 for illuminating the alarm display part through transmission; and a light guide plate 60 for guiding light of the first light source 51 toward the ambient display part 63 for anomalous times. It is thereby possible to avoid degradation in visibility due to the superposition of the ambient display part 63 for anomalous times on the scale part and a character part. Since light of the first light source 51 is guided to the ambient display part 63 for anomalous times by the light guide plate 60, it is possible to share the light source for illuminating the ambient display part 63 for the abnormal times and the light source for illuminating the alarm display part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a vehicle instrument provided with a measurement amount display unit for displaying a measurement amount and a warning display unit for displaying that a vehicle abnormality has occurred.
[0002]
[Prior art]
2. Description of the Related Art A conventional vehicle instrument includes a display panel provided with a measurement amount display unit for displaying a measurement amount such as a vehicle speed and a warning display unit for displaying that a vehicle abnormality has occurred, such as a half door. In addition, a light source is disposed at a position on the back side of the display panel facing the warning display section. When the abnormality occurs, the light source is turned on to transmit and illuminate the warning display unit.
[0003]
In addition, the display panel includes an abnormal-time ambient display portion of a display mode visually recognized as a background of the warning display portion, and illuminates the abnormal-time ambient display portion together with the warning display portion at the time of occurrence of the abnormality, thereby indicating that the abnormality has occurred. 2. Description of the Related Art An instrument for surely informing an occupant is known.
[0004]
[Problems to be solved by the invention]
Here, simply placing the abnormal ambient display section near the warning display section and sharing the light source for illuminating the abnormal ambient display section and the light source for illuminating the warning display section to reduce costs. To achieve this, the abnormal ambient display section overlaps the measurement quantity display section, and the visibility of the measurement quantity display section deteriorates.
[0005]
In view of the above, it is an object of the present invention to share a light source that illuminates an abnormal ambient display unit and a light source that illuminates a warning display unit while ensuring the visibility of a measurement amount display unit.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a measurement amount display unit (11, 12) for displaying a measurement amount and a warning display unit (13 to 17) for indicating that a vehicle abnormality has occurred are provided. A display panel (10) provided, and an abnormal-time ambient display section that is arranged around the display panel (10) and that indicates that an abnormality has occurred in a display mode visually recognized as a background of the warning display section (13 to 17). (63) a first light source (51) disposed on the back side of the display panel (10) to face the warning display section (13 to 17) and transmitting and illuminating the warning display section (13 to 17); A light guide member (60) for guiding light of the first light source (51) toward the abnormal-time ambient display section (63) as illumination light for illuminating the abnormal-time ambient display section (63). .
[0007]
As a result, the abnormal-time ambient display section (63) is arranged around the display board (10), so that the abnormal-time ambient display section (63) overlaps the measurement amount display section (11, 12), and the measurement amount display section is displayed. It is possible to prevent the visibility of the portions (11, 12) from being deteriorated.
[0008]
In addition, since the light from the first light source (51) is guided by the light guide member (60) to the abnormal ambient display section (63) located around the display plate (10), the abnormal ambient display section (63). And the light source for illuminating the warning display units (13 to 17) can be shared, and the cost can be reduced.
[0009]
Further, as in the second aspect of the present invention, the light guide member (60) reflects the light of the first light source (51) toward the occupant at a portion located around the display plate (10). A surface (64) and an emission end surface (63) for emitting light reflected by the reflection surface (64) are provided, and the emission end surface (63) is preferably visually recognized as an abnormal ambient display section (63). is there.
[0010]
By the way, regarding the human vision, in an environment where lighting is always performed, the eyes become accustomed to the lighting, and the user feels unconsciously, but does not positively feel that the lighting is performed. Then, when sudden changes such as turning off and discoloration occur in the lighting which is felt unconsciously, the change is felt with a strong impact. In the present specification, sensing the change in illumination as described above is called an ambient effect.
[0011]
Therefore, according to the third aspect of the present invention, the display mode is arranged around the display plate (10) and is visually recognized as the background of the measurement amount display section (11, 12). And a normal-time ambient display section (63) for displaying that no error has occurred.
[0012]
Thereby, in the event of an abnormality, in addition to reliably notifying the occupant that an abnormality has occurred by illuminating the abnormal-time ambient display unit (63) together with the warning display units (13 to 17), the above-described ambient effect is also provided. Can be demonstrated.
[0013]
The invention according to claim 4 is characterized in that the normal-time ambient display section (63) is illuminated with white light, and it is possible to effectively realize that the user is unconsciously illuminated in the normal time. .
[0014]
According to a fifth aspect of the present invention, there is provided a second light source (52) disposed on the back surface side of the display plate (10) and transmitting and illuminating the measurement amount display unit (11, 12). The light enters the light guide member (60), is reflected by the reflection surface (64), and is emitted from the emission end surface (63). The emission end surface (63) is visually recognized as a normal ambient display portion. And the two ambient display sections are switched and displayed.
[0015]
According to this, since both ambient display sections can be shared, cost can be reduced by reducing the number of parts.
[0016]
It should be noted that reference numerals in parentheses of the above-described units are examples showing the correspondence with specific units described in the embodiments described later.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0018]
1 to 3 show an example of a passenger car meter according to the present invention. This instrument is disposed on an instrument panel provided in the passenger compartment of the passenger car, and is applied to a speedometer for displaying a vehicle speed. 1 is a front view of the instrument, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG.
[0019]
As shown in FIGS. 1 to 3, the instrument includes a display plate 10, a pointer 20, a rotating inner device 30, a printed circuit board 40, a first light source 51, a second light source 52, and a light guide plate 60 as a light guide member. Have.
[0020]
The display plate 10 is formed of a translucent resin into a plate shape, and is formed in a substantially circular shape. Further, the display panel 10 is provided with warning display sections 13, 14, 15, 16, and 17. More specifically, light-shielding printing is performed on portions of the display panel 10 other than the scale portion 11, the number portion 12, and the warning display portions 13 to 17, and the scale portion 11, the number portion 12, and the warning display portions 13 to 17 are printed. Only the portion is transmitted and illuminated.
[0021]
The warning display unit 13 is a display unit that warns that the door is open, the warning display unit 14 is a display unit that warns an abnormality in the engine system, and the warning display unit 15 is a display unit that warns an abnormality in the alternator system. The warning display section 16 is a display section for warning an abnormality in the ABS system, and the warning display section 17 is a display section for warning an abnormality in the airbag system.
[0022]
The pointer 20 rotates on the front side of the display panel 10 (the left side in FIGS. 2 and 3), and the indicator 21 of the pointer 20 points to the scale 11. The pointing section 21 is supported by the boss section 22. Specifically, the support portion 21 and the boss portion 22 are integrally formed of resin. Note that the measurement amount display section described in the above claims corresponds to the scale section 11 and the number section 12.
[0023]
The rotating inner unit 30 includes an inner unit main body 31 mounted on the back surface of the printed circuit board 40, and a rotating shaft 32 extending from the back surface of the printed circuit board 40 to the front surface. The boss 22 of the pointer 20 is supported at the tip of the rotating shaft 32. Specifically, the tip of the rotating shaft 32 is press-fitted into the insertion hole of the boss 22.
[0024]
The printed circuit board 40 controls the operations of the light sources 51 and 52 and the rotating inner unit 30. The printed circuit board 40 is held together with the light guide plate 60 in a housing (not shown).
[0025]
The light sources 51 and 52 are mounted on the front surface of the printed circuit board 40. Further, light is emitted in a direction perpendicular to the printed circuit board 40 (the left-right direction in FIG. 3).
[0026]
A plurality of first light sources 51 are provided, and are arranged at positions facing the warning display sections 13 to 17, respectively. A plurality of second light sources 52 are provided and arranged at equal intervals around the rotation axis 32. The first and second light sources 51 and 52 emit light of different colors. The color of the first light source 51 is desirably a color (e.g., orange) that gives a warning to the occupant, and the color of the second light source 52 is desirably a color (e.g., white) that provides a sense of security to the occupant.
[0027]
The light guide plate 60 is formed in a shape (substantially circular shape) similar to the shape of the display plate 10, and is arranged so as to be parallel to the display plate 10. A portion of the light guide plate 60 facing the first light source 51 is provided with a first incident surface 61 on which orange light emitted from the first light source 51 is incident, and an inner periphery of the light guide plate 60 facing the second light source 52. A second incident surface 62 on which white light emitted from the second light source 52 is incident is formed at the end. Note that the second incident surface 62 is formed in an annular shape around the rotation axis 32, whereas the first incident surface 61 is formed only in a portion facing the first light source 51.
[0028]
The outer peripheral end of the light guide plate 60 is bent toward the driver along the periphery of the display panel 10 so that the end face 63 is exposed to the driver. A reflection surface 64 that reflects the orange light L1 of the first light source 51 toward the viewpoint of the occupant as shown by an arrow L2 is formed in a portion of the light guide plate 60 located around the display plate 10. . The orange light reflected on the reflection surface 64 is emitted from the emission end face 63.
[0029]
As a result, when the first light source 51 is turned on, the warning display units 13 to 17 are transmitted and illuminated. Then, the emission end face 63 can be visually recognized as an abnormal ambient display section that indicates that an abnormality has occurred in a display mode visually recognized as the background of the warning display sections 13 to 17.
[0030]
A portion (a portion indicated by reference numeral 65 in FIG. 2) of the rear surface of the light guide plate 60 facing the scale portion 11 and the numeral portion 12 is subjected to graining, and the grained portion 65 causes the second light source to be formed. The 52 white light L3 is reflected toward the occupant's viewpoint as shown by an arrow L4. A part of the white light L3 is reflected by the reflection surface 64 and exits from the exit end surface 63.
[0031]
Thus, when the second light source 52 is turned on, the scale portion 11 and the numeral portion 12 are transmitted and illuminated. Then, in the display mode visually recognized as the background of the scale section 11 and the numeral section 12, the emission end face 63 is visually recognized as a normal ambient display section that indicates that no abnormality has occurred in any of the parts of the vehicle. be able to.
[0032]
In the embodiment configured as described above, when the control circuit of the printed circuit board 40 is operated, the second light source 52 is turned on and the operation of the rotating inner machine 30 is controlled. The user is instructed to indicate the graduation portion 11 and the illuminated scale portion 11 and the numeral portion 12 are transmitted and illuminated, and the emission end face 63 is illuminated and transmitted so that the normal ambient display portion is visually recognized.
[0033]
Here, when an abnormality occurs in the vehicle part, the first light source 51 of the display unit corresponding to the content of the abnormality among the warning display units 13 to 17 is turned on to cause the warning display units 13 to 17 to be illuminated by transmission and emitted. The end face 63 is transmitted and illuminated and visually recognized as an abnormal ambient display section. At this time, the second light source 52 may be turned off or may be kept turned on.
[0034]
Incidentally, there is a conventional display device that illuminates the entire display panel 10 when the headlights of the vehicle are turned on during traveling in a tunnel or at night, etc., but in the present embodiment, the presence or absence of such headlight lighting is determined. Regardless, as described above, the first and second light sources 51 and 52 are driven so that the emission end face 63 is visually recognized as an ambient display section.
[0035]
As described above, according to the present embodiment, since the abnormal or normal ambient display section 63 is arranged around the display panel 10, the abnormal or normal ambient display section 63 overlaps the scale section 11 and the numeric section 12. This can prevent the visibility of the scale portion 11 and the numeral portion 12 from being deteriorated.
[0036]
Moreover, the light from the first light source 51 is guided by the light guide plate 60 to the abnormal ambient display section 63 located around the display panel 10, so that the light source for illuminating the abnormal ambient display section 63 and the warning display sections 13 to 17 are provided. Can be shared with the light source that illuminates the light source, and the cost can be reduced.
[0037]
In addition, the emission end face 63 is visually recognized as a normal ambient display section in a normal state, and is visually recognized as an abnormal ambient display section in an abnormal state. Therefore, since both ambient display sections can be shared, the cost can be reduced by reducing the number of parts.
[0038]
In addition, when an abnormality occurs, not only the warning display sections 13 to 17 are displayed, but also the periphery of the display plate 10 in the vicinity thereof is illuminated, so that the driver can more easily recognize that there is an abnormality. On the other hand, when the vehicle is normal, the entire periphery of the scale 11 shines white, so that the driver can easily recognize that the vehicle is normal.
[Brief description of the drawings]
FIG. 1 is a front view of an instrument according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 1;
[Explanation of symbols]
10 display panel, 11 scale part (measurement amount display part),
12: Numerical part (measured amount display part), 13 to 17: Warning display part,
51 ... first light source,
63 ... Outgoing end face (Abnormal display when abnormal, Ambient display when normal)

Claims (5)

A display plate (10) provided with a measurement amount display unit (11, 12) for displaying the measurement amount, and a warning display unit (13, 14, 15, 16, 17) for indicating that a vehicle abnormality has occurred;
An abnormal ambient display section (63) arranged around the display board (10) and displaying the occurrence of the abnormality in a display mode visually recognized as a background of the warning display sections (13 to 17);
A first light source (51) disposed on a rear surface side of the display panel (10) at a position facing the warning display units (13 to 17) and transmitting and illuminating the warning display units (13 to 17);
A light guide member (60) for guiding the light of the first light source (51) toward the abnormal time ambient display portion (63) as illumination light for illuminating the abnormal time ambient display portion (63). Vehicle instrument. A reflection surface (64) for reflecting light of the first light source (51) toward an occupant; a reflection surface (64) on a portion of the light guide member (60) located around the display plate (10); An emission end face (63) for emitting the light reflected at (64);
The vehicle instrument according to claim 1, wherein the emission end face (63) is visually recognized as the abnormal-time ambient display section (63). A display mode arranged around the display panel (10) and visually recognized as a background of the measurement amount display sections (11, 12), indicating that no abnormality has occurred in any of the parts of the vehicle. The vehicular instrument according to claim 1, further comprising a normal-time ambient display section. The vehicular instrument according to claim 3, wherein the normal-time ambient display section (63) is illuminated with white light. A second light source (52) disposed on the back side of the display plate (10) and configured to transmit and illuminate the measurement amount display units (11, 12);
Light from the second light source (52) is incident on the light guide member (60), is reflected by the reflection surface (64), and is emitted from the emission end surface (63).
5. The vehicle instrument according to claim 3, wherein the emission end face is visually recognized as the normal-time ambient display section, and the two ambient display sections are switched and displayed. 6.

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