JP4987549B2 - Display unit for vehicle - Google Patents

Description

  The present invention relates to a vehicle display unit provided on a dashboard, an instrument panel, or the like of a vehicle.

  In recent years, with the increase and diversification of information required by the driver during driving, a vehicle that displays a virtual image on the windshield and visually displays information that cannot be displayed due to space in the meter unit A projection display unit called a head-up display device (HUD), which is superimposed on the foreground, is employed.

Moreover, since the vehicle is equipped with a combination meter having a plurality of indicators for displaying measured values such as vehicle speed, engine speed, fuel remaining amount, temperature, etc., a projection display is provided on a narrow space of the combination meter. It has been considered to display by unit. As a display method for projecting and displaying an image, a vehicle display device disclosed in Patent Document 1 is known. The vehicle display device projects and displays an image on the entire screen of the convex curved screen by the first display unit having the light source, and the first projection unit by the second projection unit having the laser. The image is displayed so as to be superimposed on a specific part of the image.
JP 2002-234360 A

  However, when projection display is performed on a narrow space such as the surface of a combination meter, the display area is limited, and it is difficult to obtain the desired display size. In particular, when a laser is used as part of the configuration, there is a problem that the display area is further limited due to space, optical path length, and the like. In addition, when an LCD or the like is used as a display for projection, the entire display screen is displayed on the surface of the combination meter or the like, so that it is difficult to display pinpoints in a narrow space.

  Therefore, in view of the above-described problems, an object of the present invention is to provide a vehicle display unit that can scan laser light and display information in a desired display size in a narrow space.

  The vehicle display unit according to claim 1, which is made according to the present invention to solve the above-described problems, is provided integrally with the design member and the design member, and displays first information about the vehicle on the front side of the design member. A display unit for a vehicle attached to the vehicle, wherein the display is provided so as to scan a desired area on the front surface of the design member and scan a laser beam on the front surface of the design member. It has a laser display means which displays the 2nd information different from the display object of a vessel.

  The vehicle display unit according to claim 2 is the vehicle display unit according to claim 1, wherein the laser beam has a field angle larger than a scanable field angle of the laser beam emitted by the laser display unit. It has the correction means which corrects.

  The vehicular display unit according to claim 3 is the vehicular display unit according to claim 2, wherein the correction unit is caused by a difference in optical path length of the laser beam emitted from the laser display unit toward the predetermined region. It is a means for correcting the distortion of the second information.

  The vehicle display unit according to claim 4 is the vehicle display unit according to any one of claims 1 to 3, wherein the indicator includes an indicator attached to a front side of the design member, and the front surface. A pointer that is provided on the side and rotates in accordance with the measurement amount and performs the desired display in cooperation with the indicator, and has an indicated position detection means for detecting the indicated position of the pointer, and The laser display means is a means for displaying the second information so as to deviate from the indicated position of the pointer detected by the indicated position detecting means.

  As described above, according to the vehicle display unit of the present invention described in claim 1, the laser display means is provided in front of the design member, and the laser beam is irradiated so as to travel to a desired region on the front surface of the design member. Since the second information is displayed, the desired area becomes a narrow space on the front surface of the design member, and even if the display area is limited, the second information can be displayed on the desired area in a pinpoint manner. . Further, since the laser light is used, it is not necessary to consider the focal length of the second information, and it is possible to easily cope with the distance to the front surface of the design member that is different for each vehicle type. Furthermore, by assembling the design member, the display, and the laser display unit as a unit, it is possible to improve the assembling property with respect to the vehicle. Therefore, it is possible to easily cope with an increase in the amount of information provided to the driver or the like and diversification.

  According to the vehicle display unit of the present invention described in claim 2, in addition to the effect of claim 1, the correcting means for making the angle of view larger than the scanable angle of view of the laser light irradiated on the front surface of the design member. Even if the dashboard is narrow and the distance from the laser display means to the front surface of the design member cannot be secured, the laser display means can be arranged in front of the design member, so that the driver can It is possible to reliably prevent the light from heading.

  According to the vehicle display unit of the present invention described in claim 3, in addition to the effect of claim 2, the distortion of the second information caused by the difference in the optical path length of the laser beam toward the predetermined region is corrected by the correcting means. Since the second information can be displayed in a desired shape even if the laser beam cannot be incident on the design member perpendicularly, the display can be performed even if the design member is a curved surface or the like. it can.

  According to the vehicle display unit of the present invention described in claim 4, in addition to the effect of any one of claims 1 to 3, the indication position of the pointer of the indicator is detected and deviated from the indication position. Since the second information is displayed, even if the front surface of the design member is a narrow space and the display area is limited, more second information can be pinpointed in the desired area.

  Hereinafter, an embodiment of a display unit for a vehicle according to the present invention will be described with reference to the drawings of FIGS.

  1 to 4, the vehicle display unit 1 includes a design member 10 and a plurality of indicators 20 that are provided integrally with the design member 10 and display first information about the vehicle on the front side of the design member 10. And a laser display means 30, a correction means 40, a case 50, and a front glass 60.

  The design member 10 is provided as a design panel in front of the driver or the like so as to be visible from the driver or the like. The design member 10 includes a plurality (four in FIG. 1) of dials 11 to which a design of the display device 20 to be described later is attached, and a dial that covers the edges of the dials 11 and forms the outer shape of the design member 10. 12. That is, in the present embodiment, the case where the dial 11 and the facing plate 12 are formed in an integral plate shape will be described, but the present invention is not limited to this, and the design member 10 is formed only by the facing plate 12, Various embodiments can be made according to the configuration of the product, such as incorporating the display side dial into the turning back 12 according to the assembly of the display 20.

  The dial plate 11 has, for example, scales and numbers 13, letters, symbols, and other indicators corresponding to the speedometer 20A, tachometer 20B, water temperature gauge 20C, fuel gauge 20D, and the like on the surface. That is, the front surface of the design member 10 is the surface of the dial 11 and the turn 12 that are visually recognized by the driver or the like.

  The display 20 includes a pointer 22 disposed on the front side of the dial 11 described above, an internal unit 23 that drives the pointer 22 according to the measurement amount, and a wiring board on which a circuit pattern is provided and the internal unit 23 is fixed. 24 and a control unit 25 provided on the wiring board 24.

  The pointer 22 includes a light-transmitting pointer main body 12a that indicates the index 13, and a light-transmitting pointer cap 12b that covers the base of the pointer main body 12a. The pointer main body 12a is fixed to the output shaft of the internal unit 23, and is rotated to the indicated position according to the measurement amount. The pointer main body 12a is provided with a colored layer on the bottom surface of the pointing portion, and guides light from a pointer light source (not shown) inside the pointing portion, thereby The indicator is made to emit light.

  The internal unit 23 uses a well-known stepper motor, cross coil movement, or the like, and is controlled by the control unit 25 to rotate the output shaft in a predetermined direction by a predetermined angle. The wiring board 24 is provided on the back side of the design member 10, and the internal unit 23 and the control unit 25 are mounted thereon. The wiring board 24 has a wiring pattern that electrically connects the internal unit 23, the laser display means 30, and the control unit 25.

  Although not shown, the control unit 25 is composed of a microcomputer including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (A Read / Write Memory as needed). Then, the CPU controls the display of the display device 20 according to the control program stored in the ROM, and also controls the display of the laser display means 30. The control unit 25 is driven by electric power supplied from a constant voltage power source connected to a vehicle battery or the like.

  The control unit 25 is connected to various devices such as a speed sensor and a rotation sensor while an ignition (IGN) switch of the vehicle is connected via an input / output circuit. The control unit 25 controls the speed indicator 20A, the tachometer 20B, the water temperature gauge 20C, the fuel gauge 20D, and the like, and the entire vehicle display unit 1 of the laser display means 30. The ROM or the like stores a program for causing the control unit 25 to function as a pointing position detection unit that detects the pointing position of the pointer 22 and a unit that controls the display 22 and the laser display unit 30.

  Such a display 20 displays the first information P1 by turning the pointer 22 to the indicated position corresponding to the measurement amount. That is, in the present embodiment, the first information P1 means information that the dials 11 such as the speedometer 20A, the tachometer 20B, the water temperature gauge 20C, and the fuel gauge 20D and the pointer 22 cooperate to instruct. .

  Next, the laser display means 30 irradiates a desired region on the front surface of the design member 10 so as to scan the laser beam, which is provided above the dashboard 5 in front of the design member 10. Second information different from the target is displayed. As the laser display means 30, a laser irradiation device 30 that irradiates a laser beam by two-dimensional scanning is used.

  As the laser display means 30, a known ultra-small semiconductor laser or the like is used, and brightness modulation, ON / OFF of laser light irradiation, laser light scanning, and the like are controlled by the control unit 25 described above. The laser display means 30 has a scanner (not shown). As the scanner, a polygon mirror, a mirror that vibrates (rotates) with a motor, a mirror that changes the mirror angle by electrostatic force, or a hologram (diffraction grating). What is used, and what is constantly oscillating and scanned using a piezo element, is used.

  The correction means 40 is a lens, a prism, a reflection mirror, or the like. The correction means 40 is positioned on the irradiation optical axis L of the laser display means 30 by the holder 41 and is provided in the case 50. As shown in FIG. 4, the correcting means 40 is formed in an enlarged system shape for correcting the laser light so that the field angle E1 is larger than the viewable angle E2 of the laser light to be irradiated. Further, the angle of view E1 is enlarged to an angle of view that covers all of the dial plate 11 corresponding to the speedometer 10A and the tachometer 10B of the design member 10. By forming the angle of view E1 in this way, the second information P2 can be displayed in an arbitrary predetermined area of the dial 11 and the look-back 12.

  In the present embodiment, the second information P2 for displaying the turn flash, the shift position, and the “right turn” is displayed on the surface of the turnover 12 between the speedometer 10A and the tachometer 10B, and the brake is displayed. The second information P2 is displayed on the surface of the dial 11 of the speedometer 10A, and the second information P2 for displaying a high beam is displayed on the surface of the dial 11 of the tachometer 10B. The second information P2 displayed on the speedometer 10A and the tachometer 10B is displayed by the control unit 25 so as to deviate from the indicated position of the pointer 22, or displayed so as to be out of the rotation range of the pointer 22. Is done.

  Further, since the laser display means 30 is provided on the upper front side of the design member 10, the laser beams L1 and L2 toward the angle of view E2 are perpendicular to the surface of the design member 10 as shown in FIG. It cannot be incident. Therefore, unless special processing is performed, the angle of view E2 becomes a trapezoid as shown in FIG. Therefore, the correction unit 40 is formed in a shape that corrects distortion of the second information P2 caused by the difference in the optical path length (L1 <L2) in the predetermined region of the laser light irradiated by the laser display unit 30.

  When the laser light emitted from the laser display means 30 toward the angle of view E2 is incident, the correction means 40 configured in this way is corrected so that the shape expands and the shape becomes the angle of view E1, and the surface of the design member 10 is corrected. Exit toward

  The case 50 is formed as a casing by a synthetic resin, a metal member or the like so as to accommodate the design member 10 and the plurality of indicators 20 and to position and fix the laser display means 30. The front glass 60 forms a unit together with the case 50 by covering the front (driver) side of the case 50. The vehicle display unit 1 is incorporated in the dashboard 5 of the vehicle.

  Next, an example of the operation (action) of the vehicle display unit 1 according to the present invention described above will be described.

  The control unit 25 described above samples the sensor output from various sensors corresponding to each display object such as the speedometer 20A, the tachometer 20B, the water temperature meter 20C, and the fuel meter 20D by executing a built-in program, The first information P1 is displayed by rotating the pointer 22 to the internal unit 23 so as to indicate the sensor value.

  Moreover, if the control part 25 acquires the various data for producing | generating the 2nd information P2 and updates the 2nd information P2, it will respond | correspond to the 2nd information P2 in the surface corresponding to the angle of view E2 in the design member 10. The laser light is scanned on the surface of the design member 10 corresponding to the second information P2 by controlling ON / OFF and scanning of the laser light irradiation of the laser display means 30 so that the laser light is directed only to the displayed position. Irradiated as follows. Thus, the second information P2 is displayed at a desired display position on the surface of the design member 10, as shown in FIG.

  Furthermore, since the second information P2 is displayed in the rotation range of the pointer 22 in the tachometer 20B, the control unit 25 acquires the indicated position data, control data, and the like of the display 20 corresponding to the tachometer 20B. Based on the data and the map information of the angle of view E2 stored in advance, the indicated position on the dial 11 is specified, and the display position of the second information P2 at the angle of view E2 is set so as to deviate from the indicated position. The laser display means 31 is controlled so that the laser beam corresponding to the second information P2 travels only at that position. Thus, on the tachometer 20B, the second information P2 is also displayed while moving in a narrow space in accordance with the rotation of the pointer 22.

  According to the vehicle display unit 1 described above, the laser display means 30 is provided in front of the design member 10 and is irradiated so as to travel a laser beam to a desired area on the front surface of the design member 10, so that the second information P <b> 2 is obtained. Since the desired area becomes a narrow space on the front surface of the design member 10 and the display area is limited, the second information P2 can be displayed on the desired area in a pinpoint manner. Moreover, since the laser beam is used, it is not necessary to consider the focal length of the second information P2, and the distance to the front surface of the design member 10 that is different for each vehicle type can be easily handled. Furthermore, the design member 10, the display device 20, and the laser display means 30 are integrated into a unit so that the assembling property for the vehicle can be improved. Therefore, it is possible to easily cope with an increase in the amount of information provided to the driver or the like and diversification.

  In addition, since the correction means 40 is provided to make the angle of view E1 larger than the scanable angle of view E2 of the laser beam irradiated on the front surface of the design member 10, the dashboard 5 is narrow and the design from the laser display means 30 is reduced. Even when the distance to the front surface of the member 10 cannot be secured, the laser display means 30 can be disposed in front of the design member, so that it is possible to reliably prevent the laser beam from traveling toward the driver or the like.

  Further, since the correction means 40 corrects the distortion of the second information P2 caused by the difference in the optical path length of the laser beam toward the predetermined region, even if the laser beam cannot be incident on the design member 10 vertically. Since the second information P2 can be displayed in a desired shape, the display can be performed even if the design member 10 is a curved surface or the like.

  Further, since the indication position of the pointer 22 of the display device 20 is detected and the second information P2 is displayed so as to deviate from the indication position, the front surface of the design member 10 is narrow and the display area is limited. However, more second information P2 can be displayed in a desired area in a pinpoint manner.

  In addition, although this embodiment mentioned above demonstrated the case where the 2nd information P2 was displayed on the desired position in the surface of the design member 10 in the angle of view E1, this invention is not limited to this, A variously different display It can be in the form.

  For example, as shown in FIG. 5, only the indicator 20 corresponding to the speedometer 20A, the water temperature gauge 20C, and the fuel gauge 20D is provided, and a display dedicated area E3 is provided in the design member 10 between the speedometer 20A and the water temperature gauge 20C. The second information P2 such as night vision, car navigation, and back monitor can be displayed in the display dedicated area E3, and the above-described tachometer 20B can be displayed as the second information P2. Further, all of the angle of view E1 described above can be displayed as the second information P2.

  Further, in the present embodiment described above, the case where the laser display means 30 is provided on the upper front side of the dashboard 5 has been described, but the present invention is not limited to this, and variously different such as the lower front side of the dashboard 5. It can be an embodiment.

  As described above, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

It is a front view which shows the example of a display of the display unit for vehicles of this invention. It is a cross-sectional schematic diagram of the arrow direction which passes along the straight line XX in FIG. It is the enlarged view to which the part A in FIG. 2 was expanded. It is a figure for demonstrating the relationship between the dial plate and angle of view in a design member. It is a front view which shows the other example of a display of the display unit for vehicles of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display unit for vehicles 10 Design member 20 Indicator 30 Laser display means 40 Correction means 50 Case 60 Table glass L1, 2 Laser light P1 1st information P2 2nd information

Claims (4)

In a display unit for a vehicle that has a design member and a display unit that is provided integrally with the design member and displays first information about the vehicle on the front side of the design member, and is attached to the vehicle.
Laser display means is provided in front of the design member and irradiates a desired region on the front surface of the design member so as to scan with laser light and displays second information different from the display target of the display. A vehicle display unit.   2. The vehicle display unit according to claim 1, further comprising a correcting unit that corrects the laser light so that the angle of view of the laser beam irradiated by the laser display unit is larger than the scanable field angle.   3. The vehicle according to claim 2, wherein the correction unit is a unit that corrects distortion of the second information caused by a difference in optical path length of the laser light emitted from the laser display unit toward the predetermined region. 4. Display unit. The indicator includes an indicator attached to the front side of the design member, and a pointer that is provided on the front side and rotates according to a measurement amount to cooperate with the indicator to perform the desired display. Have
A pointing position detecting means for detecting a pointing position of the pointer, and
The said laser display means is a means to display said 2nd information so that it may shift | deviate from the instruction | indication position of the pointer | guide detected by the said instruction | indication position detection means, The one of Claims 1-3 characterized by the above-mentioned. Display unit for vehicles.

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