JP2013001352A - Vehicular display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular display device which, when carrying out performance by adjusting brightness at the start of display, reduces a sense of incompatibility felt by a user, and secures excellent visibility for the whole display.SOLUTION: The vehicular display device includes a first illumination part 141 which illuminates an analog display part, a second illumination part 140 which illuminates a digital display part, and a display start control part 110 which gradually increases the lightness of the first illumination part over time and automatically adjust display colors of the digital display part in synchronism with the change in lightness of the first illumination part according to a predetermined display change pattern when the analog display part and digital display part start display operations.

Description

  The present invention relates to a vehicle display device including an analog display unit and a digital display unit, such as a display device for an instrument panel on a vehicle, and more particularly to display control at the start of display.

  In vehicles such as automobiles, various instruments such as a speedometer, a tachometer, a fuel gauge, and a water temperature gauge are generally mounted on an instrument panel in front of the driver's seat. Various warning lights, indicators, and the like that indicate the state of each part of the vehicle are also mounted on the instrument panel.

  In recent years, vehicle display devices for instrument panels often include an analog display unit with good visibility and a digital display unit capable of displaying various information. For example, a speedometer or a tachometer is often configured as an analog display unit that physically drives a pointer and points a numerical value on a predetermined scale with the pointer. In addition, components other than the speedometer and tachometer, for example, a fuel gauge, a warning light, an indicator, an odometer, and a trip meter are often configured as a digital display unit using a display device such as a liquid crystal display panel.

  Moreover, in order to illuminate the display of each part on an instrument panel, the display apparatus for vehicles as described above often includes an illumination device inside the instrument panel. In other words, regardless of whether it is daytime or nighttime, the illumination device is used to illuminate each part on the instrument panel, and the illumination light quantity is adjusted to ensure good visibility at all times.

  For example, Patent Document 1 discloses a conventional technique related to the brightness of display in such a vehicle display device. The vehicle display device of Patent Document 1 includes a meter that is an analog display unit and a liquid crystal panel that is a digital display unit, and further includes a pointer light source, a panel light source, and a liquid crystal light source as an illumination device.

  Further, in Patent Document 1, when the ignition switch is turned on and display is started, the brightness of the panel light source is set in advance after gradually increasing from the minimum value to the maximum value as time passes. It is automatically adjusted to the set value. Further, after the panel light source is turned on and the brightness adjustment is completed, the pointer light source and the liquid crystal light source are turned on, and the pointer light source and the liquid crystal light source are immediately adjusted to the brightness of the preset setting value.

JP 2001-277905 A

  As disclosed in Patent Document 1, it is possible to give a favorable impression to a user (driver) who sees this display by gradually increasing the brightness of the display at the start of operation. Can increase the product value.

  However, in the control disclosed in Patent Document 1, the brightness gradually increases only in the analog display unit, and the brightness of the digital display unit changes at a stroke from the extinguished state to the preset lighting state. Therefore, there is a high possibility that the user will feel uncomfortable about the display form of the entire instrument panel.

  Of course, in order to eliminate the user's uncomfortable feeling, it is easily conceivable to control the digital display unit so as to gradually increase the brightness in the same manner as the analog display unit. However, since there is a large difference in visibility between the analog display unit and the digital display unit, a desired result cannot be obtained even if the brightness is controlled in the same manner.

  That is, for the analog display unit, the user can easily read a relatively large difference in the direction of the pointer and the positional relationship between the pointer and the scale, so that even if the display is relatively dark, the visibility of the display content Is good. On the other hand, in the digital display unit, since each display element appearing on a display screen such as a liquid crystal panel is small and the shape of each element is not constant, it is difficult for the user to read in a relatively dark state. Therefore, if the brightness of the digital display unit is adjusted so as to gradually increase from a dark state, the digital display unit is very difficult to see from the user until it changes to a bright state. Therefore, it cannot necessarily be said that the commercial value as an instrument panel is high.

  The present invention has been made in view of the above-described circumstances, and its purpose is to reduce discomfort felt by the user when performing an effect by adjusting the brightness at the start of display and to achieve good visual recognition of the entire display. An object of the present invention is to provide a display device for a vehicle that can ensure the performance.

In order to achieve the above-described object, the vehicle display device according to the present invention is characterized by the following (1) to (5).
(1) A vehicle display device including an analog display unit having a pointer indicating a numerical value on a predetermined scale, and a digital display unit capable of individually controlling at least display / non-display state of each of various display elements Because
A first illumination unit that illuminates the analog display unit;
A second illumination unit for illuminating the digital display unit;
When the display operation of the analog display unit and the digital display unit is started, the brightness of the first illumination unit is gradually increased as time passes, and the brightness change of the first illumination unit is performed. And a display start control unit that automatically adjusts the display color of the digital display unit in accordance with a predetermined display change pattern.
(2) In the vehicle display device described in (1) above,
When the display start control unit adjusts the brightness of the first illumination unit, the illumination light amount of the second illumination unit is fixed to a constant value.
(3) In the vehicle display device described in (1) above,
The display start control unit includes an information storage unit that holds a plurality of illumination information corresponding to a change in brightness of the first illumination unit and a plurality of display color information corresponding to the display change pattern.
(4) In the vehicle display device according to (3),
The information storage unit includes the plurality of information storage units such that an influence of a change in brightness of the first illumination unit on a visual recognition state and an influence of a change in display color of the digital display unit on the visual recognition state substantially coincide with each other. And the plurality of display color information are held in association with each other.
(5) In the vehicle display device according to (1),
The display start control unit automatically updates the brightness of the first illumination unit and the display color of the digital display unit every time a predetermined time elapses until a predetermined control end condition is satisfied.

According to the vehicle display device having the configuration of (1) above, the display color of the display of the digital display unit is changed. Therefore, the same display as when the brightness is changed without changing the brightness. A production effect can be obtained. Moreover, since it is not necessary to change the brightness of the digital display part, good visibility can be ensured. Furthermore, since the brightness adjustment of the analog display unit and the display color adjustment of the digital display unit are synchronized, a sense of incongruity hardly occurs.
According to the vehicular display device having the configuration (2), the brightness of the illumination of the digital display unit does not decrease, so that good visibility can always be ensured.
According to the vehicular display device having the configuration (3), the information stored in the information storage unit can be read in order to adjust the brightness and the display color, thereby facilitating the control.
According to the vehicle display device having the configuration (4), it is possible to adjust the brightness of the analog display unit and the display color of the digital display unit so that the user does not feel uncomfortable.
According to the vehicle display device having the configuration (5), the brightness of the analog display unit and the display color of the digital display unit can be gradually changed by simple control.

  According to the vehicle display device of the present invention, it is possible to obtain display effects by adjusting brightness and the like at the start of display. In addition, it is possible to reduce a sense of incongruity felt by the user, and to ensure good visibility of the entire display.

  The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading through the modes for carrying out the invention described below with reference to the accompanying drawings.

It is a front view which shows the external appearance of the display apparatus for vehicles of embodiment. It is a flowchart which shows the main operation | movement of the display apparatus for vehicles shown in FIG. It is a block diagram which shows the structure of the electric circuit of the display apparatus for vehicles shown in FIG. It is a schematic diagram which shows the structural example of the data hold | maintained on memory. It is a time chart which shows the specific example of the time-dependent change of the parameter for a display which the display apparatus for vehicles shown in FIG. 1 uses. It is a time chart showing the example of a state transition regarding the display of the speedometer of a display apparatus for vehicles, and a multi display part.

  Specific embodiments relating to the vehicle display device of the present invention will be described below with reference to the drawings.

<Description of the appearance of the device>
A specific example of the appearance of the vehicle display device 100 of the present embodiment is shown in FIG. The vehicle display device 100 shown in FIG. 1 is configured by integrating various display elements of an instrument panel arranged in front of a driver's seat of an automobile.

  In the vehicle display device 100 shown in FIG. 1, a rectangular multi-display unit 30 is disposed at the center, a circular speedometer (speedometer) 10 is disposed on the left side, and a circular tachometer (tachometer) is disposed on the right side. 20 is arranged. A turn L display unit 41, a turn R display unit 42, and a trip knob 43 are also provided. The speedometer 10 and the tachometer 20 are analog display units, and the multi-display unit 30 is a digital display unit.

  The speedometer 10 has a pointer 11 and a scale 12. The pointer 11 is fixed to a rotating shaft disposed substantially at the center of the circular area, and is driven by a speedometer drive mechanism 121 described later. The scale 12 is formed by printing or the like as a design including an arc-shaped visible pattern and characters at a position near the periphery of the circular region. That is, since the pointer 11 is driven so as to face in the direction corresponding to the vehicle speed (km / h) at that time, the driver can read the value of the vehicle speed from the position on the scale 12 indicated by the tip of the pointer 11.

  Similarly, the tachometer 20 also has a pointer 21 and a scale 22. Since the pointer 21 of the tachometer 20 is driven so as to face a direction corresponding to the rotational speed (× 1000 rpm) of the engine, the driver reads the value of the rotational speed from the position on the scale 22 indicated by the tip of the pointer 21. be able to.

  Each part of the speedometer 10 and the tachometer 20 is always illuminated by illumination light emitted from an illumination light source disposed on the back side of the display surface. With this illumination light, the driver can easily visually recognize the position of the pointers 11 and 21 and the positional relationship between the tips of the pointers 11 and 21 and the scales 12 and 22 without being affected by the brightness of the environment. it can.

  The multi-display unit 30 is configured using a color liquid crystal display panel (LCD), and can individually control the display / non-display state and display color (hue and brightness) for each of various display elements. it can.

  In the example shown in FIG. 1, various display elements such as a fuel meter 31, a warning display unit 32, a shift indicator 33, an instantaneous fuel consumption meter 34, an odometer 35, and a trip meter 36 are incorporated in the multi display unit 30.

  The liquid crystal display panel of the multi-display unit 30 is always illuminated with illumination light emitted from an illumination light source disposed on the back side thereof. That is, the driver can view the visible image formed by the light emitted from the back side and transmitted through the liquid crystal display panel as the display content.

<Description of configuration of electric circuit of device>
The configuration of the electric circuit of the vehicle display device 100 shown in FIG. 1 is shown in FIG. As shown in FIG. 3, the electric circuit of the vehicle display device 100 includes a microcomputer 110, a speedometer drive mechanism 121, a tachometer drive mechanism 122, a motor driver 123, a liquid crystal display panel 130, a liquid crystal driver 131, and a liquid crystal illumination. Light-emitting unit 140, illumination light-emitting unit 141, warning light-emitting unit 142, read-only memory 150, power supply circuit 160, interfaces 171 and 172, and operation switch 180 are provided.

  The microcomputer 110 incorporates a communication function corresponding to a CAN (Controller Area Network) standard, a read-only memory (ROM), a readable / writable memory (RAM), and the like. The microcomputer 110 implements various functions required for the operation of the vehicular display device 100 by executing a program stored in advance on an internal memory (ROM).

  The speedometer drive mechanism 121 includes an electric motor for driving the hands 11 of the speedometer 10. The tachometer drive mechanism 122 includes an electric motor for driving the pointer 21 of the tachometer 20.

  The speedometer drive mechanism 121 and the tachometer drive mechanism 122 are connected to the microcomputer 110 via a motor driver 123. Therefore, the microcomputer 110 can control the position of the pointer 11 of the speedometer 10 and the position of the pointer 21 of the tachometer 20, respectively.

  The liquid crystal display panel (LCD) 130 has a large number of minute display cells (dots) arranged two-dimensionally that can individually control the display state (lighting / extinguishing, hue, brightness). Various display elements such as the multi-display unit 30 shown in FIG. 1, for example, can be displayed graphically by a combination of display of a large number of dots.

  The liquid crystal display panel 130 is connected to the microcomputer 110 via a liquid crystal driver 131. Therefore, the microcomputer 110 can control the display state of the liquid crystal display panel 130.

  The light emitting unit for liquid crystal illumination 140 is composed of a plurality of light emitting diodes (LEDs) arranged on the back side of the display surface of the liquid crystal display panel 130. The illumination light emitted from the light emitting unit 140 for liquid crystal illumination has a spectrum close to white. The light emitting diode of the light emitting unit for liquid crystal illumination 140 is connected to the output of the microcomputer 110 and the power supply line (VH). Therefore, the microcomputer 110 can turn on / off the illumination of the light emitting unit 140 for liquid crystal illumination. Further, the brightness of the illumination light can be changed by repeatedly turning on and off the illumination in a pulsed manner and adjusting the on / off duty.

  The illumination light-emitting unit 141 includes a plurality of light-emitting diodes arranged on the back side of the display surface such as the speedometer 10 and the tachometer 20. The light emitting diode of the illumination light emitting unit 141 is connected to the output of the microcomputer 110 and the power supply line (VH). Therefore, the microcomputer 110 can turn on / off the illumination of the illumination light emitting unit 141. Moreover, the brightness of the illumination light of the speedometer 10 and the tachometer 20 can be changed by repeatedly turning on and off the illumination in pulses and adjusting the duty of the on and off.

  The warning light emitting unit 142 is composed of a plurality of light emitting diodes individually connected to the output of the microcomputer 110. Each of the plurality of light emitting diodes is disposed on the back side of the corresponding warning display element. For example, one light emitting diode is disposed on the back side of the warning display section 32 shown in FIG. The microcomputer 110 controls turning on / off each light emitting diode of the warning light emitting unit 142 and can individually control display / non-display of the plurality of warning display units.

  A read only memory (EEPROM) 150 holds constant data representing various control parameters determined in advance. The constant data stored in the read-only memory 150 includes a dimming table used for dimming control at the start of display. An example of the configuration of this dimming table is shown in FIG.

  In the dimming table shown in FIG. 4, 16 pieces of data D01 to D16 are held at memory addresses A01 to A16. Of these data D01 to D16, the first eight data D01 to D08 are LED display color data for determining the display color of information displayed on the liquid crystal display panel 130. Further, the latter eight pieces of data D09 to D16 are LED duty data for determining the light emission amount of the illumination light emitting unit 141.

  The power supply circuit 160 shown in FIG. 3 generates a voltage (Vcc: 5 V, for example) necessary for the operation of the microcomputer 110 based on the power (+ B) supplied from the in-vehicle battery. Further, a reset signal for initializing the microcomputer 110 is generated.

  An ignition signal IGN indicating ignition on / off of the vehicle is input to the microcomputer 110 via the interface 171. The signal line CA of the CAN standard communication network on the vehicle is connected to the microcomputer 110 via the interface 172.

  The operation switch 180 connected to the input port of the microcomputer 110 is turned on and off by operating the trip knob 43 shown in FIG. The operation switch 180 is used for display switching and resetting operation of the odometer 35 and trip meter 36.

<Explanation of device operation>
Main operations of the vehicle display device 100 shown in FIG. 1 are shown in FIG. This operation is executed by the microcomputer 110. The operation shown in FIG. 2 will be described below.

  When power is supplied to the microcomputer 110, the microcomputer 110 performs predetermined initialization, and then proceeds to the process of step S10 in FIG. In step S10, the microcomputer 110 monitors the state of the ignition signal IGN input from the interface 171 and waits until the ignition is turned on. When the ignition is turned on, the process proceeds to the next step S11.

  In steps S <b> 11 and S <b> 12, the microcomputer 110 specifies address information representing an area in which the microcomputer 110 can acquire all data necessary for display in the initial state of the vehicle display device 100 from the read-only memory 150.

  In step S11, as initial data at the start of display, the location of data representing the design first displayed on the screen of the liquid crystal display panel 130, the location of the initial value data of the display color of the liquid crystal display panel 130, and the analog display unit The location of initial data representing the brightness of the design is specified.

  For example, when the dimming table having the configuration shown in FIG. 4 exists in the read-only memory 150, the first address A01 of the data D01 to D08 in FIG. 4 is specified as the initial data of the display color of the liquid crystal display panel 130. To do. Also, the first address A09 of the data D09 to D16 in FIG. 4 is specified as initial data representing the brightness of the design of the analog display unit.

  In step S12, the location of the final value data of the display color of the liquid crystal display panel 130 and the location of the final value data representing the brightness of the design of the analog display unit are specified as the final data at the start of display.

  For example, when the dimming table having the configuration shown in FIG. 4 exists in the read-only memory 150, the last address A08 of the data D01 to D08 in FIG. 4 is used as the final value data of the display color of the liquid crystal display panel 130. Identify. Further, the last address A16 of the data D09 to D16 in FIG. 4 is specified as final value data representing the brightness of the analog display unit.

  In step S13, the microcomputer 110 outputs data to each unit so that the analog display unit and the digital display unit are displayed in the initial state. That is, using the initial data of the area specified in step S11, the design content and display color displayed on the liquid crystal display panel 130 and the LED duty value for controlling the illumination light emitting unit 141 that illuminates the analog display unit are output. To do.

  Therefore, when the dimming table having the configuration shown in FIG. 4 is used, a display color corresponding to the data D01 is output to the liquid crystal display panel 130 in step S13, and the illumination light-emitting unit 141 has a duty corresponding to the data D09. The amount of light emission is controlled.

  In step S14, the process waits until a predetermined time (for example, 1 second) elapses. When the predetermined time has elapsed, the processing of the microcomputer 110 proceeds to the next step S15.

  In step S15, in order to change the display state of the analog display unit and the digital display unit, the microcomputer 110 reads the following data from the read-only memory 150, displays the design display color of the liquid crystal display panel 130, and the illumination light-emitting unit 141. Is obtained as the control duty.

  For example, when a predetermined time has elapsed since the display of the initial state in step S13, the data D02 at the second address A02 is used as the display color of the design of the liquid crystal display panel 130, and the data D10 at the second address A10 is illuminated. It is assumed that the control duty (brightness) of the light emitting unit 141 is set.

  The second and subsequent data (D02 to D08, D10 to D16) held in the dimming table shown in FIG. 4 may be absolute values or represent differences (Δ) from the previous data. It may be. If the difference data is held in the dimming table, the value of (previous value + current difference Δ) is output in step S15.

  In step S16, the microcomputer 110 updates the display state (design display color) of the liquid crystal display panel 130 and the control duty of the illumination light emitting unit 141 using the new data acquired in step S15.

  In step S17, the microcomputer 110 identifies whether or not a special process at the start of display has been completed. Specifically, it is identified whether or not the data read in step S15 has reached the last address (A08 or A16) of the dimming table specified in step S12. If the process has not ended, the processes in and after step S14 are repeated. If the process has ended, the process proceeds to the next step S18.

  In the process shown in FIG. 2, when steps S13 to S17 are executed, the light emission luminance (control duty) of the liquid crystal illumination light emitting unit 140 that illuminates the liquid crystal display panel 130 is kept constant. That is, at this time, the display brightness of the liquid crystal display panel 130 is fixed.

  In step S18, the microcomputer 110 executes normal display processing. That is, information is exchanged with other in-vehicle electronic control units (ECUs) (not shown) via a CAN standard communication network, and necessary information is acquired and reflected in the display of the analog display unit and the digital display unit. To do. For example, information such as the latest vehicle speed, engine rotation speed, fuel remaining amount, transmission shift state, presence / absence of abnormality of each part is acquired and the result is displayed.

<Description of specific example of operation>
A specific example of the change over time of the display parameters used by the vehicle display device shown in FIG. 1 is shown in FIG. Moreover, the example of a state transition regarding the display of the speedometer 10 of this display apparatus 100 for vehicles and the multi-display part 30 is shown by FIG.

  When the ignition display is turned on and the vehicle display device 100 starts displaying, the display color parameter (LCD display color) and the illumination brightness parameter (LED duty) of the speedometer 10 are set as shown by the curves in FIG. Automatically changed. That is, the display colors of the liquid crystal display panel 130 are changed to CL01, CL02, CL03, CL04, CL05, CL06, CL07, and CL08 at times t1, t2, t3, t4, t5, t6, t7, and t8 shown in FIG. Switch. At the same time, the control duty indicating the illumination brightness of the speedometer 10 is switched to DU09, DU10, DU11, DU12, DU13, DU14, DU15, and DU16 at each time t1, t2, t3, t4, t5, t6, t7, and t8.

  Here, the display colors CL01 to CL08 at each time correspond to the data D01 to D08 of each address (A01 to A08) shown in FIG. 4, and the control duties DU09 to DU16 at each time correspond to the addresses shown in FIG. This corresponds to the data D09 to D16 of (A09 to A16).

  That is, the display colors CL01 to CL08 and the control duties DU09 to DU16 at times t1 to t8 shown in FIG. 5 are determined based on the data set in step S12 or S15 shown in FIG.

  In the example shown in FIG. 5, the control duty for determining the light emission amount of the illumination light-emitting unit 141 is increased at regular intervals according to a predetermined curve so that the control duty gradually increases with time in the range of 0% to 100%. Switching. Accordingly, the brightness of the analog display unit such as the speedometer 10 gradually increases. In addition, the display color (hue) of the liquid crystal display panel 130 is switched at regular intervals according to a predetermined curve so that the display color (hue) of the liquid crystal display panel 130 gradually changes with time in the range of black, gray, and white. ing.

  Therefore, for example, at time t1 shown in FIG. 5, the control duty of the illumination light emitting unit 141 is relatively small (DU09), and the speedometer 10 and the tachometer 20 are in a very dark state. At this time, since the display color (CL01) representing the design of the liquid crystal display panel 130 is a display color having a hue close to black, even if the illumination brightness is constant, a relatively dark impression is given to the user's vision. Will give. That is, the display of the speedometer 10 and the tachometer 20 in which the illumination is dark matches the display content of the liquid crystal display panel 130 that gives a dark impression due to the hue, so that a sense of incongruity hardly occurs. In addition, since the display of a hue such as a design such as a background that is close to black has high visibility, high visibility can be ensured even when it appears dark to the user. That is, even when it looks dark, the user can surely visually read what is displayed on the screen of the liquid crystal display panel 130.

  Further, at time t8 shown in FIG. 5, the control duty of the illumination light emitting unit 141 increases to a value close to a predetermined set value (DU15: 100% or less), and the speedometer 10 and the tachometer 20 are very bright. It becomes a state. At this time, since the display color (CL08) representing the design of the liquid crystal display panel 130 is a display color having a hue close to white, a relatively bright impression is given to the user's vision even if the brightness of the illumination is constant. Will give. That is, the display of the speedometer 10 and the tachometer 20 with bright illumination matches the display content of the liquid crystal display panel 130 that gives a brighter impression by hue, and a sense of incongruity hardly occurs. In addition, since the display of a hue close to white in the design such as the background is less visible than black, it is possible to prevent only the display content of the liquid crystal display panel 130 from being too conspicuous when the user looks bright.

  Therefore, when the vehicle display device 100 starts display, the display state transitions with time, for example, as shown in FIG. That is, in FIG. 6, at time t1, the illumination of the display of the speedometer 10 (t1) is determined as the control duty DU09, and the hue related to the design display of the multi-display unit 30 (t1) is determined as the display color CL01. At time t4, the illumination of the display of the speedometer 10 (t4) is determined as the control duty DU12, and the hue related to the design display of the multi-display unit 30 (t4) is determined as the display color CL04. At time t7, the illumination of the display of the speedometer 10 (t7) is determined as the control duty DU15, and the hue related to the design display of the multi-display unit 30 (t7) is determined as the display color CL07.

  In the example shown in FIG. 6, the design of the letters “START” displayed on the screen of the multi-display unit 30 and the hue of the design representing the initial state of the odometer and trip meter are determined by the display colors CL01, CL04, and CL07. Has been.

  Note that the display colors of the data D01 to D08 registered in the dimming table shown in FIG. 4 may be numbers representing specific colors in a list of color data determined in advance. Further, the number of data (D01 to D16) used in the operation of starting display, the number of bits of each data, the display update interval (a fixed time in S14), and the like may be changed as necessary. Can do.

  In the example shown in FIG. 5, the display colors CL01 to CL08 are determined to change within the range of “black / gray / white”, but may be changed within a range of different hues. For example, according to the color of the dial, it may be selected within the range of the color system such as “black / blue / light blue”. Further, a hue of a different system from the color of the dial may be used.

  In any case, as shown in FIGS. 5 and 6, the effect of display can be obtained by gradually increasing the brightness of the illumination of the analog display unit, and the commercial value of the display device 100 for the vehicle is increased. be able to. In addition, since the display color of the digital display unit is changed in synchronization with the brightness adjustment of the analog display unit, it is possible to prevent the display of the entire instrument panel from feeling uncomfortable and the visibility of the digital display unit is reduced. Can also be prevented.

10 Speedometer (Analog display)
11 Pointer 12 Scale 20 Tachometer (Analog display)
21 Pointer 22 Scale 30 Multi-display (digital display)
31 Fuel Indicator 32 Warning Display Unit 33 Shift Indicator 34 Instantaneous Fuel Economy Meter 35 Odometer 36 Trip Meter 41 Turn L Display Unit 42 Turn R Display Unit 43 Trip Knob 100 Vehicle Display Device 110 Microcomputer (Display Start Control Unit)
121 speedometer drive mechanism 122 tachometer drive mechanism 123 motor driver 130 liquid crystal display panel 131 liquid crystal driver 140 light emitting unit for liquid crystal illumination (second illumination unit)
141 Light-emitting part for illumination (1st illumination part)
142 Light-emitting unit for warning 150 Read-only memory (information storage unit)
160 Power supply circuit 171, 172 Interface 180 Operation switch

Claims (5)

A vehicle display device comprising: an analog display unit having a pointer indicating a numerical value on a predetermined scale; and a digital display unit capable of individually controlling at least display / non-display state of each of various display elements. ,
A first illumination unit that illuminates the analog display unit;
A second illumination unit for illuminating the digital display unit;
When the display operation of the analog display unit and the digital display unit is started, the brightness of the first illumination unit is gradually increased as time passes, and the brightness change of the first illumination unit is performed. A vehicle display device comprising: a display start control unit that automatically adjusts a display color of the digital display unit according to a predetermined display change pattern in synchronization. 2. The vehicle display according to claim 1, wherein when the display start control unit adjusts the brightness of the first illumination unit, the illumination light amount of the second illumination unit is fixed to a constant value. apparatus. The display start control unit includes an information storage unit that holds a plurality of illumination information corresponding to a change in brightness of the first illumination unit and a plurality of display color information corresponding to the display change pattern. The vehicle display device according to claim 1, wherein The information storage unit includes the plurality of information storage units such that an influence of a change in brightness of the first illumination unit on a visual recognition state and an influence of a change in display color of the digital display unit on the visual recognition state substantially coincide with each other. The vehicle display device according to claim 3, wherein the lighting information and the plurality of display color information are stored in association with each other. The display start control unit automatically updates the brightness of the first illumination unit and the display color of the digital display unit every time a predetermined time elapses until a predetermined control end condition is satisfied. The vehicle display device according to claim 1, wherein

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