JP5274992B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device.

  11A and 11B are diagrams showing a configuration example of a conventional vehicle display device, in which FIG. 11A is a front view and FIG. 11B is a cross-sectional view taken along line AA in the front view. As shown in the figure, the vehicle display device 1 is a pointer-type analog display that constitutes a combination meter including, for example, a speedometer and a tachometer, and a substrate is formed in a storage space formed by the case 2 and the front glass 3. 4, a stepper motor 5 serving as a movement mounted on the substrate 4, a dial 6, and a pointer 7 that is rotationally driven by the stepper motor 5 and points to an indicator portion of the dial 6 are accommodated. The dial 6 includes a speedometer indicator 6a for instructing the traveling speed of the vehicle and a tachometer indicator for instructing the engine speed.

  When the driver L of the vehicle sees the meter from the front, the meter display range that the driver L can see is the visibility range a. In the visibility range a, the characters and scales on the indicator portion of the dial plate of the meter can be visually recognized as shown in FIG.

  In such a vehicle display device, even if the driver L feels it is difficult to see because the characters and scales on the indicator part of the dial indicated by the pointer are small, The characters and scales on the indicator portion of the dial cannot be enlarged and visually recognized.

In view of this, a vehicular display device having a magnifying lens and configured to make it easier for a viewer, such as an elderly person or a person with reduced vision, to see by enlarging a meter display with the magnifying lens. It has been proposed (see, for example, Patent Document 1).
JP-A-8-179227

  However, in the vehicular display device provided with the above-described magnifying lens, the magnifying ratio of the magnifying display is fixed, and a viewer who desires magnifying display feels that the enlarged meter display is easy to see. For a viewer who does not wish, an enlarged meter display does not always have good visibility. For example, a vehicle equipped with a normal meter display vehicle display device not equipped with a magnifying lens was changed to a vehicle equipped with a magnifying lens meter display vehicle display device enlarged than the normal meter display. In such a case, there is a problem in that when the meter display is visually recognized, there is a possibility of giving an uncomfortable feeling and adversely affecting driving.

  In view of the above problems, an object of the present invention is to provide a vehicular display device that can maintain better visibility than the prior art.

In order to solve the above-mentioned problem, the invention according to claim 1 is provided with switching means (8-11) for switching the display screen of the display (2-7) as a plurality of display screens of different sizes for visual recognition. The switching means includes a magnifying lens, a magnifying ratio adjusting means for magnifying the display screen of the display device at an arbitrary magnifying ratio by the magnifying lens, and a tilt angle and / or pan angle of the display screen of the display device An adjustment mechanism that adjusts the first housing, and a second housing housed in the first housing and provided with the display, the magnifying lens, and the magnification ratio adjusting means. The magnification adjusting means is housed inside the second housing and slidably supported with respect to the magnification lens attached to the opening of the second housing. Move the indicator forward and backward The magnification adjusted by the, the adjustment mechanism is characterized by adjusting the tilt angle and / or pan angle by changing the angle of the second housing to the first housing .

  Note that the reference numerals in parentheses in the description of the means for solving the above-described problems correspond to the reference numerals in the description of the best mode for carrying out the invention below. It does not limit the interpretation of the range.

According to the first aspect of the present invention, the display screen of the display device of the vehicle display device can be switched and viewed as a display screen enlarged to a different size in response to a driver's request. Furthermore, according to the request of the driver, the display screen of the display device of the vehicle display device can be switched and viewed as a display screen of a different size enlarged at an arbitrary enlargement ratio. Furthermore, the tilt angle and pan angle of the display screen of the display device can be adjusted to suit the driver's line of sight.

  Embodiments of the present invention will be described below with reference to the drawings.

  (First Embodiment) FIG. 1 is a cross-sectional view showing a first embodiment of a vehicle display device according to the present invention. In the first embodiment, a vehicle display device using a pointer type analog display similar to the conventional device shown in FIG. 11 as a display will be described, and a front view thereof is shown in FIG. The cross-sectional view of FIG. 1 corresponds to the cross-sectional view along the line AA shown in FIG.

  In FIG. 1, the vehicular display device 1 of the present embodiment includes a bottomed, substantially rectangular tube-shaped case 2 integrally formed with a facing 2 a portion, and a front glass 3 fixed to the opening 2 b of the case 2. In the storage space that is formed, the substrate 4, the stepper motor 5 that is mounted on the substrate 4 and functions as a movement, the dial 6, and the pointer that is rotationally driven by the stepper motor 5 and indicates the indicator portion 6a on the display surface of the dial 6 7 is provided with a pointer type analog display.

  Further, in the vehicular display device 1, the case 2 having a substantially rectangular tube shape has a diameter that increases toward the opening side, and is pivotally attached to the upper side turning 2 a portion on the opening side of the case 2. A Fresnel lens 9 as a magnifying lens whose one end is fixed to the shaft 8, and a drive shaft 11 a that drives the rotating shaft 8 to rotate from the outside of the case 2 via a transmission mechanism 10 such as a gear. The first motor 11 is provided. The rotating shaft 8, the transmission mechanism 10, and the first motor 11 correspond to state switching means in the claims. The vehicular display device 1 having the above-described configuration is attached to an opening 32 provided between the meter hood 30 and the instrument panel 31.

  As shown in FIG. 1, the Fresnel lens 9 has a focal point fo, and is disposed at a location away from the pointer-type analog display within the range of the focal length. 8 is driven to switch between a vertical position and a horizontal position. When switched to the vertical position, the Fresnel lens 9 is parallel to the display surface of the dial 6 of the display, and the display surface of the dial 6 can be enlarged so that the driver L can visually recognize it. It becomes a state (enlarged state; indicated by a solid line in FIG. 1). When the position is switched to the horizontal position, the Fresnel lens 9 is turned counterclockwise to the portion 2a so that the display surface of the dial 6 of the display device is not enlarged (a non-enlarged state; 1 (indicated by a dotted line in FIG. 1).

  In such a vehicle display device 1, for example, the first motor 11 is not normally driven, and the Fresnel lens 9 is set in the second state (non-enlarged state) to meet the request of the driver L. When the first motor 11 is activated by operating an enlargement switch (not shown), the Fresnel lens 9 is switched from the second state (non-enlarged state) to the first state (enlarged state). Thus, when the dial 6 of the display is enlarged and visually recognized, and when the first motor 11 is activated to reversely rotate by the operation of a non-enlarging switch (not shown), the Fresnel lens 9 is The state (enlarged state) can be returned to the second state (non-enlarged state). As shown in FIG. 2, the display surface of the display device is not enlarged (normal display state) and enlarged (enlarged display). (Status) switching Ukoto can.

  Therefore, it is the normal visual range b that the driver L can normally see the display surface of the display device by inserting and removing the Fresnel lens 9, but the meter display is enlarged to meet the request of the driver L, and the display surface of the display device is displayed. Can be switched to the enlarged visual range c.

  The Fresnel lens 9 may be moved manually instead of being driven by a motor. In this case, for example, a switching lever (not shown) that can manually rotate the rotation shaft 8 may be provided outside the case 2.

  (Second Embodiment) Next, FIG. 3 is a sectional view showing a second embodiment of the vehicular display apparatus according to the present invention. In the first embodiment described above, the Fresnel lens 9 is disposed in the storage space between the dial 6 and the front glass 3, but in the second embodiment of FIG. 3, the front glass that is outside the display device. 3 on the front side.

  The vehicle display device 1 of the present embodiment includes a substrate 4, a stepper motor 5, and a storage space formed by a substantially rectangular tube-shaped case 2 and a front glass 3 fixed to the opening 2 b of the case 2. A dial type analog display in which a dial 6 and a pointer 7 are housed is provided. The indicator is attached to an opening 32 provided in the meter hood 30 and the instrument panel 31.

  The Fresnel lens 9 and the rotation shaft 8 are attached to the upper part of the attachment box 12, and the attachment box 12 is fixed to an opening 31 a formed in the instrument panel 31 on the lower side of the meter hood 30. The first motor 11 is disposed inside the instrument panel 31, and its drive shaft 11 a is inserted into the mounting box 12 so that the rotating shaft 8 can be driven via a transmission mechanism in the mounting box 12. .

  When the Fresnel lens 9 is driven by the first motor 11, the arrangement thereof is switched between a vertical position and a horizontal position as shown in FIG. When switched to the vertical position, the Fresnel lens 9 is parallel to the display surface of the dial plate 6 of the display, and the display surface of the dial plate 6 can be enlarged to be viewed by the viewer L. This is the state (enlarged state). When the position is switched to the horizontal position, the Fresnel lens 9 is rotated counterclockwise to the opening 31a of the instrument panel 31 so as to be out of the viewing area of the front glass 3, and the dial 6 of the display is not enlarged. The second state (non-enlarged state) is set.

  In the structure shown in FIG. 3, the driver can normally see the normal visual range d, but by waking up the Fresnel lens 9 in accordance with the driver's request, the meter display can be switched to the enlarged visual range e. The Fresnel lens 9 may be moved manually instead of being driven by a motor, as in the first embodiment.

  (Third Embodiment) FIG. 4 is a sectional view showing a third embodiment of the vehicular display device according to the present invention. In the second embodiment described above, the mounting box 12 to which the Fresnel lens 9 and the rotating shaft 8 are attached is fixed to the opening 31 a formed in the lower instrument panel 31 of the meter hood 30. In the third embodiment, the opening 31a can be attached to and detached from the opening 31a. In this case, for example, an engaging claw (not shown) provided at the inner edge of the opening 31a of the instrument panel 31 is used to lock and fix the mounting box 12 with the Fresnel lens 9 and the rotary shaft 8 mounted on the upper side. Or can be removed by releasing the locking by the engaging claw.

  (Fourth Embodiment) Next, FIG. 5 is a sectional view showing a fourth embodiment of the vehicle display device according to the present invention. In the fourth embodiment, a case will be described in which a display such as an LCD (liquid crystal display) is used as the display instead of the pointer-type analog display described in the first to third embodiments. The vehicle display device according to the fourth embodiment is a display meter that can arbitrarily adjust the enlargement ratio of the enlarged display according to the driver's request and can adjust the angle of the display screen of the display vertically and horizontally.

  In FIG. 5, the vehicle display device 1 includes a box-shaped first housing 13 having an accommodation space inside and having an opening portion 13 a partially attached with a front glass 3, and the first housing. And a second housing 14 housed in 13 housing spaces.

  The second casing 14 includes an LCD 15 and a Fresnel lens 9 as shown in FIG. 6 to be described later. The first casing 14 is enlarged so that an enlarged display obtained by enlarging the display screen of the LCD 15 with the Fresnel lens 9 can be viewed through the front glass 3. Is housed in the housing 13. Further, the second housing 14 includes a first driving device 16. As will be described later, the first driving device 16 includes a zoom mechanism 16A that adjusts an enlargement ratio at the time of enlarged display, and a tilt mechanism 16B that adjusts the tilt angle in the vertical direction (Y direction) of the enlarged display screen. Have

  The vehicle display device 1 further includes a second drive device 17 that is provided outside the first housing 13 and adjusts the pan angle in the left-right direction (Z direction) of the enlarged display screen. Yes. The vehicular display device 1 having such a configuration is attached to an opening 32 provided between the meter hood 30 and the instrument panel 31.

  FIG. 6 is a cross-sectional view illustrating a state in which the LCD 15 and the Fresnel lens 9 built in the second housing 14 are attached. As shown in the figure, the second casing 14 has a storage space for storing the third casing 18, and is formed on the opening 14a to which the Fresnel lens 9 is attached, and on the opposite side of the opening 14a. And a box-shaped housing having an opening 14b exposing a part of the third housing 18. The Fresnel lens 9 is disposed at a location far from the LCD 15 within the range of the focal length, and is mounted so as to be parallel to the display screen of the LCD 15.

  The third casing 18 is a box-shaped casing in which a rectangular parallelepiped LCD 15 is housed and an opening 18a for exposing the display screen of the LCD 15 is provided on the front surface. The LCD 15 is an LCD with a backlight. Two rollers 19 are attached to both side surfaces of the third housing 18, respectively. The roller 19 includes a roller shaft 19a that is integrally formed of resin so as to protrude from the third casing 18, and a roller 19b that is inserted into the roller shaft 19a and is prevented from coming off. The roller 19 engages with the long grooves 14 c formed on the inner walls on both sides of the second casing 14 to enable the third casing 18 to move in the front-rear direction (X direction) with respect to the Fresnel lens 9. Is for.

  7 and 8 are diagrams for explaining the zoom mechanism and the tilt mechanism of the first driving device 16. As shown in the figure, a first drive device 16 including a zoom mechanism 16A and a tilt mechanism 16B is provided at the lower portion of the second housing 14.

  The zoom mechanism 16A includes a zoom driving motor 16a fixed to the second casing 14, a gear 16b fixed to the rotation shaft of the zoom driving motor 16a, and a zoom driving mechanism fixed to the second casing 14. A rack gear 16c, a zoom intermediate gear 16d that meshes with the gear 16b, and a zoom pinion gear 16e that is provided coaxially with the zoom intermediate gear 16d and meshes with the zoom rack gear 16c.

  The tilt mechanism 16B includes a tilt driving motor 16f fixed to an extending portion 18a extending from a lower portion of the third casing 18, and a tilt driving pinion gear 16g fixed to a rotation shaft of the tilt driving motor 16f. And an arcuate tilt rotation gear 16h attached to the extending portion 18b extending from the lower portion of the third casing 18 so as to be freely rotatable by pin coupling. As the tilt driving motor 16f, a motor having a high reduction ratio such as a geared motor is used.

  In the vehicular display device 1 having the above-described configuration, the third casing 18 including the LCD 15 moves in the front-rear direction (X direction) with respect to the Fresnel lens 9 attached to the second casing 14. Is possible.

  Therefore, for example, normally, the zoom driving motor 16a is not driven, and the Fresnel lens 9 is set in a normal display state in which the display screen of the LCD 15 is enlarged at a predetermined magnification.

  When the zoom drive motor 16a is activated so as to rotate normally by operating an enlargement switch (not shown) in accordance with the request of the driver L, the rotation of the zoom drive motor 16a is the gear 16b and the zoom intermediate gear. 16d is transmitted to the zoom rack gear 16c via the zoom pinion gear 16e, and the Fresnel lens 9 is moved and stopped so that the Fresnel lens 9 is moved away from the display screen of the LCD 15, whereby the Fresnel lens 9 is stopped. Then, the display screen of the LCD 15 is switched to an enlarged display state with an enlargement factor larger than the predetermined enlargement factor in the normal display state described above, and the dial 6 of the display device is enlarged more than usual so that the driver L can visually recognize it.

  Further, when the zoom drive motor 16a is activated so as to reversely rotate by operating a non-enlargement (or reduction) switch (not shown), the Fresnel lens 9 approaches the display screen of the LCD 15 by gear transmission. By moving the third housing 18 as described above, the Fresnel lens 9 can be returned from the enlarged display state to the normal display state, and as a result, as shown in FIG. The state and the enlarged display state can be switched. That is, the indicator portion 15b displayed as an image on the display screen 15a of the LCD 15 is greatly enlarged in the enlarged display state as compared with the normal display state, and is easily visible.

  Therefore, the distance between the LCD 15 and the Fresnel lens 9 can be freely set, and the field of view range f does not change, but it is possible to view the LCD display screen enlarged at an arbitrary enlargement rate that meets the driver's request. .

  Further, the second casing 14 performs an operation of changing the tilt angle (Y direction) in the vertical direction with respect to the first casing 13 by the first driving device 16 attached to the lower portion.

  Therefore, when the tilt drive motor 16f is activated to rotate in the forward direction by operating the tilt angle raising adjustment switch (not shown) in accordance with the request of the driver L, the rotation is tilted via the tilt drive pinion gear 16g. By being transmitted to the rotating gear 16h and adjusting the tilt angles of the second casing 14 and the third casing 18, the display screen of the enlarged LCD 15 is raised from the original position, and the driver L It can be adjusted so that it faces directly in front of the line of sight.

  Further, when the tilt driving motor 16f is activated to rotate in reverse by operating a tilt angle lowering adjustment switch (not shown), the rotation is transmitted to the tilt rotating gear 16h via the tilt driving pinion gear 16g, By adjusting the tilt angles of the second housing 14 and the third housing 18, the enlarged display screen of the LCD 15 is lowered from the original position and is directed directly in front of the line of sight of the driver L. Can be adjusted as follows.

  By such an operation, as shown in FIG. 10, for example, it is tilted by 3.5 ° upward from the normal position and 5 ° downward from the normal position in accordance with the upper and lower ends of the iris EL based on the sitting height difference of the driver L. By adjusting the angle, the display screen of the LCD 15 can change the vertical tilt angle (Y direction) from the normal position to the upper limit and lower limit positions so as to match the eye position of the driver L.

  Further, the first casing 13 performs an operation of adjusting the pan angle (Z direction) in the left-right direction on the basis of the axis 17a by the second driving device 17 provided outside thereof. Since the mechanism for adjusting the pan angle is well known, the detailed configuration of the second driving device 17 is omitted here. By this operation, the display screen of the LCD 15 can adjust the pan angle (Z direction) in the left-right direction so as to match the eye position of the driver L.

  As described above, the zoom mechanism 16A of the first drive device 16 causes the rotation of the zoom drive motor 16a to be linked to the zoom rack gear 16c using each gear, and moves the third casing 18 within the focal length range. Is moved in the forward and backward X directions to change the magnification by the Fresnel lens 9. Further, the tilt mechanism 16B moves the second casing 14 and the third casing 18 in the vertical Y direction using the tilt driving motor 16f, and the tilt angle of the display screen of the LCD 15 is adjusted by the tilt rotation gear 16h. Has been decided. Further, the second driving device 17 moves the first housing 13 in the left and right Z directions to determine the pan angle of the display screen of the LCD 15.

  In addition, the second casing 14 is integrally formed with a collar 20 extending from the top, bottom, left and right ends of the front surface. The collar 20 serves to hide the gap so that no gap is visible between the second housing 14 and the opening 13a when performing an operation in the vertical direction (Y direction).

  When the first casing 13 operates in the left-right direction (Z direction), a gap as described above is also generated between the first casing 13 and the opening 32 of the instrument panel portion 31. Similarly, this gap can be hidden by providing a flange (not shown) extending from the top, bottom, left and right ends of the front surface of the first housing 13.

  As described above, according to the fourth embodiment of the present invention, the display image on the display can be determined to an arbitrary enlargement ratio by the zoom operation in the front-rear direction (X direction). In addition, the display angle is tilted up and down by the tilt angle adjustment operation in the vertical direction (Y direction), and further panned to the left and right by the pan angle adjustment operation in the left and right direction (Z direction). The enlarged display surface can be adjusted to face directly in front.

  In the fourth embodiment, a display display such as the LCD 15 is used, but the same effect can be obtained even if a pointer type analog display is used.

As described above, the fourth embodiment is superior to the conventional technique in the following points.
(1) The display (meter) display can be set to an arbitrary enlargement ratio according to the driver's request.
(2) The angle of the display (LCD 15) can be adjusted vertically and horizontally so that the display screen faces directly in front of the line of sight of each driver.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this, A various deformation | transformation and application are possible.

  For example, the configurations of the zoom mechanism 16A and the tilt mechanism 16B in the fourth embodiment described above are merely examples of various configurations, and other configurations can be used.

  In the above-described fourth embodiment, zoom adjustment, tilt angle adjustment, and pan angle adjustment are automatically performed by motor drive, but these may be manually performed.

  In the above-described fourth embodiment, the normal display state with a predetermined enlargement ratio and the enlarged display state with an enlargement ratio that is larger than the predetermined enlargement ratio can be switched. For example, it can be configured so that it can be viewed at any magnification ratio between the normal display state and the enlarged display state according to the driver's request, or it can be switched to a reduced display state that has a smaller magnification rate than the normal display state. You may do it.

It is sectional drawing which shows 1st Embodiment of the display apparatus for vehicles which concerns on this invention. (First embodiment) It is explanatory drawing which shows a non-enlarged state (normal display state) and an enlarged state (enlarged display state). (First embodiment) It is sectional drawing which shows 2nd Embodiment of the display apparatus for vehicles which concerns on this invention. (Second Embodiment) It is sectional drawing which shows 3rd Embodiment of the display apparatus for vehicles which concerns on this invention. (Third embodiment) It is sectional drawing which shows 4th Embodiment of the display apparatus for vehicles which concerns on this invention. (Fourth embodiment) It is a figure explaining the attachment state of LCD and the Fresnel lens incorporated in the 2nd housing | casing, (A) is sectional drawing, (B) is a fragmentary sectional view of a roller part. (Fourth embodiment) It is a figure for demonstrating the zoom mechanism and tilt mechanism in a 2nd housing | casing. (Fourth embodiment) It is a schematic perspective view for demonstrating the zoom mechanism and tilt mechanism in a 2nd housing | casing. (Fourth embodiment) It is explanatory drawing which shows a reduction state (normal display state) and an expansion state (enlarged display state). (Fourth embodiment) It is a figure explaining tilt angle adjustment. (Fourth embodiment) It is a figure which shows the structural example of the conventional vehicle display apparatus, (A) is a front view, (B) is the sectional view on the AA line in a front view. (Conventional technology)

Explanation of symbols

1 Vehicle display device 2 Case (part of display)
3 Front glass (part of display)
4 Substrate (part of the display)
5 Stepper motor (part of display)
6 Dial (part of the display)
7 Guidelines (part of the display)
8 Rotating shaft (part of switching means)
9 Fresnel lens (magnifying lens, part of switching means)
10 Transmission mechanism (part of switching means, part of state switching means)
11 First motor (part of switching means, part of state switching means)
12 Mounting box 13 1st housing | casing (a part of expansion ratio adjustment means, a part of adjustment mechanism)
14 Second housing (part of enlargement ratio adjusting means)
15 LCD (display)
16 1st drive device (a part of expansion rate adjustment means)
16A zoom mechanism (a part of enlargement ratio adjusting means)
16B Tilt mechanism (part of adjustment mechanism)
17 Second drive device (part of adjustment mechanism)
18 Third housing (part of enlargement ratio adjusting means)
20 collar 30 meter hood 31 instrument panel 32 opening

Claims (1)

Comprising a switching means for switching the display screen of the display device as a plurality of display screens of different sizes for visual recognition;
The switching means includes an enlargement lens, an enlargement ratio adjusting means for enlarging the display screen of the display device at an arbitrary enlargement ratio by the enlargement lens, and a tilt angle and / or a pan angle of the display screen of the display equipment. An adjustment mechanism for adjusting,
A first housing; and a second housing housed in the first housing and provided with the display, the magnifying lens, and the magnification ratio adjusting means,
The enlargement ratio adjusting means moves the display unit housed in the second housing and slidably supported with respect to the magnifying lens attached to the opening of the second housing. Adjust magnification by moving,
The vehicle display device, wherein the adjustment mechanism adjusts a tilt angle and / or a pan angle by changing an angle of the second casing with respect to the first casing.

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