JP5549084B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a display device for a vehicle that indicates an indicator portion displayed on a display panel with a pointer.

  Conventionally, various indicator instrument devices including a liquid crystal display panel have been proposed, and disclosed in, for example, Patent Document 1 and Patent Document 2. The indicator instrument device disclosed in Patent Document 1 has a decorative ring made of a translucent material arranged on the front side of a liquid crystal display panel, and transmits the decorative ring by light emitted from the screen of the liquid crystal display panel. is there. In this indicating instrument device, since the decorative ring protrudes to the vehicle driver side from the screen of the liquid crystal display panel, the screen of the display panel is viewed three-dimensionally, the three-dimensional effect is emphasized, and a novel appearance is obtained.

  However, the above-mentioned indicating instrument device only displays the vehicle speed and the engine speed on the liquid crystal display panel, and there is a problem that the design and the sense of quality as an indicating instrument device are lacking. Therefore, the applicant of the present application has proposed an indicating instrument device having a design on the front side of the liquid crystal display panel to improve design and high quality (Japanese Patent Application No. 2008-151167).

JP 2006-201038 A JP 2006-201140 A

Such an indicator instrument device is configured to switch and display a plurality of display items in a predetermined area of the liquid crystal display panel in which a pointer is disposed on the front side of the liquid crystal display panel and an indicator portion indicated by the pointer is not displayed. It has various display functions, and it is difficult to grasp the entire display item, and there is a problem that the operability is lacking and the merchantability is impaired.
The present invention has been made in view of this problem, and provides a vehicular display device that can easily grasp the entire display items and has good operability.

The present invention displays the display panel 4 having the first region S1 and the second region S2, and the first indicator portion 4A representing the vehicle speed in the first region S1, and the second region S2. Control means 25 for displaying a second indicator portion 4B representing the engine speed, a first pointer 6A for indicating the first indicator portion 4A displayed on the display panel 4, and a display on the display panel 4 A second pointer 6B for indicating the second indicator portion 4B, a pointer support plate 5 for rotatably supporting the first and second pointers 6A, 6B, and the first and second The vehicle display device 1 includes pointer driving means 8A and 8B for rotating the pointers 6A and 6B, and the control means 25 indicates that the pointer driving motor 8A for driving the pointer 6A has failed as predetermined information. when inputting information, else the second region S2 A display switching function that displays an image and does not display the second indicator portion 4B. One of the other images displayed in the second region S2 by the display switching function is the second image This is the first indicator portion 4A indicated by the pointer 6B.

Further, the present invention, the control means 25, when inputting the information for changing the display form as the predetermined information, the other image displayed on the second region S2 by the display switching function, the The selection item 4C is designated by the second pointer 6B.

  The present invention also provides a light emitting element 12 that illuminates the first and second pointers 6A and 6B, transparent electrodes 13 and 14 that supply power to the light emitting element 12, and outer peripheral portions of the transparent electrodes 13 and 14. Auxiliary electrodes 18 and 19 formed on the pointer support plate 5 are formed.

  Further, the present invention includes an auxiliary electrode film 17 formed between the pointer support plate 5 and the transparent electrodes 13 and 14.

  When predetermined information is input to the control means, the operability is improved by displaying an image such as a selection item instead of the second indicator portion displayed in the second area of the display panel. There is little possibility that the property is impaired.

The front view which shows embodiment of this invention. Sectional drawing which shows embodiment same as the above. The front view of the liquid crystal display panel which shows embodiment same as the above. The principal part expanded sectional view which shows embodiment same as the above. The circuit diagram which shows embodiment same as the above. The circuit diagram which shows embodiment same as the above. The block diagram which shows embodiment same as the above. The front view which shows embodiment same as the above. The front view which shows embodiment same as the above.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The vehicle display device 1 includes a combination meter mounted on a dashboard of a vehicle, and includes an instrument case 2, a circuit board 3, a liquid crystal display panel (display panel) 4, a pointer support plate 5, and a pointer. 6A, 6B, etc. The circuit board 3 is accommodated in the instrument case 2 and is mounted with a pointer drive motor and the like which will be described later.

  The liquid crystal display panel 4 is composed of a TFT type liquid crystal display element, and displays the indicator portion 4A in the first display region S1 and the indicator portion 4B in the second display region S2 (see FIG. 3). The indicator part 4A displayed in the first display area S1 represents the vehicle speed, and the indicator part 4B displayed in the second display area S2 represents the engine speed. The liquid crystal display panel 4 can display various vehicle information (outside temperature information, travel distance information, fuel consumption information, navigation information, traffic information). Note that the first and second display areas S1 and S2 in the present embodiment indicate a predetermined range of the liquid crystal display panel 4 and do not have a boundary line on the display surface of the liquid crystal display panel 4. Let me add that just in case.

  The pointer support plate 5 is disposed on the front side of the liquid crystal display panel 4, and supports the pointers 6A and 6B in a rotatable manner. The pointer 6A indicates the indicator portion 4A displayed on the liquid crystal display panel 4, and the pointer 6B indicates the indicator portion 4B. The light source 7 is composed of a light emitting diode, and is disposed on the rear surface side of the liquid crystal display panel 4 to transmit and illuminate the liquid crystal display panel 4. The pointer drive motors 8A and 8B are mounted on the circuit board 3 and rotate the pointers 6A and 6B, respectively.

  The first magnet 9 is mounted on the rotation shafts of the pointer drive motors 8A and 8B and rotates together with the rotation shafts of the pointer drive motors 8A and 8B. The second magnet 10 is attached to the pointer shaft, is magnetically coupled to the first magnet 9, and rotates together with the first magnet 9. The pointer light source substrate 11 is disposed on the pointer support plate 5, and the light emitting element 12 is mounted on the pointer light source substrate 11. The light emitting element 12 irradiates the pointers 6A and 6B with illumination light to make the pointers 6A and 6B shine.

  The transparent electrode 13 is formed of a light-transmitting conductive film such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide) by an appropriate method such as vapor deposition or sputtering. The transparent electrode 13 is formed on an auxiliary conductive film, which will be described later, on the front side of the pointer indicating plate 5 and is electrically connected to the anode of the light emitting element 12. The transparent electrode 14 is formed of a light-transmitting conductive film such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide) by an appropriate method such as a vapor deposition method or a sputtering method. The transparent electrode 14 is formed on an auxiliary conductive film, which will be described later, on the back side of the pointer indicating plate 5 and is electrically connected to the cathode of the light emitting element 12. The transparent electrodes 13 and 14 are formed on the entire front and back surfaces of the pointer support plate 5, and auxiliary electrodes to be described later are provided on the outer periphery thereof.

  The auxiliary conductive film 17 is made of silicon dioxide or the like, and is provided on the front and back sides of the pointer support plate 5 (see FIG. 4). The auxiliary electrode film 17 is provided between the pointer support plate 5 and the transparent electrode 13, and between the pointer support plate 5 and the transparent electrode 14, and is formed on the pointer support plate 5 by an appropriate method such as vapor deposition or sputtering. The The 1st auxiliary electrode 18 and the 2nd auxiliary electrode 19 consist of a bus bar, are formed by appropriate methods, such as a vapor deposition method and sputtering method, and are formed in the outer peripheral part of the transparent electrodes 13 and 14. FIG.

  FIG. 6 is a circuit diagram of the light emitting element 12. The electric power for driving the light emitting element 12 is supplied from the circuit board 3, and the circuit signal line for driving the light emitting element 12 is composed of transparent electrodes 13 and 14 and wirings 15 a, 15 b, 15 c and 15 d. The wirings 15a, 15b, 15c, and 15d electrically connect the transparent electrode 13 and the circuit board 3, the transparent electrode 13 and the light emitting element 12, the transparent electrode 13 and the transparent electrode 14, and the transparent electrode 14 and the circuit board 3, respectively. Yes. A drive circuit 16 for driving the light emitting element 12 is mounted on the circuit board 3.

  FIG. 7 is a block diagram showing an electrical configuration of the vehicle display device 1. Reference numeral 20 denotes a microcomputer. The microcomputer 20 includes a CPU, a ROM, a RAM, an input / output interface, and the like. A speed sensor 21 detects the vehicle speed and outputs vehicle speed data to the microcomputer 20. Reference numeral 22 denotes a rotation sensor. The rotation sensor 22 detects the engine rotation speed and outputs rotation speed data to the microcomputer 20. Reference numeral 23 denotes an operation means composed of a push button switch or the like, and the display form can be changed by the operation means 23. Reference numeral 24 denotes a drive circuit, through which the microcomputer 20 drives the liquid crystal display panel 4 and the pointer drive motors 8A and 8B. The control means 25 is composed of a microcomputer 20 and a drive circuit 24.

  When the user operates the operation means 23 and information indicating that the display form is changed is output from the operation means 23 to the microcomputer 20, the selection item 4C is displayed in the second display area S2 of the liquid crystal display panel 4. Is displayed (see FIG. 8). The selection item 4C displayed in the second display area S2 of the liquid crystal display panel 4 includes icons such as a navigation display, a clock, an average fuel consumption, and a setting screen. These selection items 4C are designated by the pointer 6B. The user selects one of the selection items 4 </ b> C with the operation means 23.

  When the microcomputer 20 inputs information indicating that the pointer driving motor 8A that drives the pointer 6A has failed, the indicator 20 is replaced with the index portion 4B that represents the engine speed displayed in the second area S2 of the liquid crystal display panel 4. Then, the index portion 4A representing the vehicle speed is displayed in the second area S2, and the vehicle speed is displayed by indicating the index portion 4A with the pointer 6B (see FIG. 9).

  According to the present embodiment, the operability is improved by displaying the selection item 4C instead of the second indicator portion 4B displayed in the second region S2 of the liquid crystal display panel 4. Even if the pointer drive motor 8A that drives the pointer 6A fails, the vehicle speed can be displayed using the pointer 6B that is rotated by the pointer drive motor 8B.

4 Liquid crystal display panel (display panel)
4A First indicator portion 4B Second indicator portion 4C Selection item 5 Pointer support plate 6A Pointer (first pointer)
6B Guideline (Second Guideline)
8A Pointer driving means 8B Pointer driving means 12 Light emitting element 13 Transparent electrode 14 Transparent electrode 17 Auxiliary electrode film 18 Auxiliary electrode 19 Auxiliary electrode 25 Control means S1 First area S2 Second area

Claims (4)

A display panel having a first region and a second region, and a second indicator portion for displaying a first indicator portion representing a vehicle speed in the first region and representing an engine speed in the second region. Control means for displaying, a first indicator for indicating the first indicator portion displayed on the display panel, and a second indicator for indicating the second indicator portion displayed on the display panel; A display device for a vehicle , comprising: a pointer support plate for rotatably supporting the first and second pointers; and a pointer driving means for rotating the first and second pointers ,
When the control means inputs, as predetermined information, information indicating that the pointer driving means for rotating the first pointer has failed , another image is displayed in the second area, and the second indicator section A display switching function that does not display, and at least one of the other images displayed in the second area by the display switching function is the first indicator portion indicated by the second pointer. A display device for a vehicle, comprising: Wherein, when inputting the information for changing the display form as the predetermined information, the other image displayed on the second region by the display switching function is indicated on the second pointer The vehicle display device according to claim 1, wherein the display device is a selection item. A light emitting element that illuminates the first and second pointers, a transparent electrode that supplies power to the light emitting element, and an auxiliary electrode formed on an outer peripheral portion of the transparent electrode are formed on the pointer support plate. The vehicle display device according to claim 1 , wherein: The vehicle display device according to claim 3 , further comprising an auxiliary electrode film formed between the pointer support plate and the transparent electrode.

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