JP2005153723A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a vehicle stopping accurately a reflecting means in the specified angle position after an opening/closing motion of the reflecting means is ended. <P>SOLUTION: The display device for the vehicle (head-up display device) displays a virtual image upon reflecting the indicating light emitted from a display. The arrangement comprises: the reflecting means 10 furnished with a reflecting member (mirror) 11 to reflect the display light and supported in a state of being opened and closed; a driving means to open and close the reflecting means 10; and a locating member (lever) 35 having a second location part (projection) 35a mating with a first location part (first recess) 12e formed in the reflecting means 10 and engaging the second location part 35a with the first location part 12e in the condition that the reflecting means 10 is open to the specified angle position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a display device for a vehicle, and more particularly to a display device for a vehicle that displays a virtual image by reflecting display light emitted from a light-emitting display.

Conventionally, various head-up display devices that display a virtual image by reflecting display light emitted from a light-emitting display device such as a fluorescent display tube have been proposed. The head-up display device is disposed on the dashboard 1 of the vehicle, and displays the virtual image V by reflecting the display light L emitted from the light-emitting display device 2 with the reflection mirror 4 provided in the reflection means 3. Yes (see FIG. 5). The reflecting means 3 has a holding member 5 to which the reflecting mirror 4 is attached, and this holding member 5 is supported by the housing 6 in a rotatable state so that the reflecting means 3 can be opened and closed. (See FIG. 6).
Japanese Utility Model Publication No. 63-9041

  A gear 7 is fixed to the holding member 5, and a gear 9 fixed to the rotating shaft 8 a of the motor 8 is engaged with the gear 7. The reflecting means 3 can be opened and closed around the rotation shaft 5a of the holding member 5. The reflecting means 3 is closed when the head-up display device is not used, and reflected by the driving force of the motor 8 when used. The means 3 can be opened to a predetermined angular position. In addition, since the angular position of the reflecting means 3 is adjusted according to the eye level of the driver, the reflecting means 3 can be rotated by driving the motor 8 by operating a push button switch (not shown).

  However, in the vehicular display device configured as described above, the rotating operation of the reflecting means 3 is fast so that the reflecting means 3 can be quickly opened and closed, and it is difficult to stop the reflecting means 3 at a desired angular position. Had the problem. That is, the stopping of the turning operation of the reflecting means 3 is performed by stopping the motor 8 and then stopping the turning of the gears 7 and 9. In order to speed up the turning operation of the reflecting means 3. When the driving speed of the motor 8 is increased, the angle at which the reflecting means 3 stops differs when the reflecting means 3 is opened or closed depending on the operating environment of the motor 8 or the meshing state of the gears 7 and 9. There was a problem that there was.

  The present invention has been made in view of this problem, and an object of the present invention is to provide a display device for a vehicle that can accurately stop the reflecting means at a predetermined angular position after the opening / closing operation of the reflecting means. To do.

  In order to solve the above problem, the present invention is a vehicle display device that reflects a display light emitted from a display to display a virtual image, and includes a reflective member that reflects the display light, and is openable and closable. And a second positioning portion corresponding to the first positioning portion provided in the reflection means, the reflection means being at a predetermined angular position. And a positioning member that engages the second positioning portion with the first positioning portion in an open state.

  The reflecting means may include a sliding portion that rotates in contact with the positioning member, and the first positioning portion is formed on the sliding portion.

  Further, the first and second positioning portions are characterized in that one is a recess and the other is a protrusion corresponding to the recess.

  In addition, a braking member is provided that brakes the engaging operation of the second positioning portion when the first and second positioning portions are engaged.

  Further, the present invention is a vehicle display device that reflects a display light emitted from a display to display a virtual image, and includes a reflective member that reflects the display light, and is supported in an openable / closable state. Driving means for opening and closing the reflecting means, and a fourth positioning part corresponding to a third positioning part provided in the reflecting means, and the fourth positioning part is in a state where the reflecting means is closed. And a positioning member engaged with the third positioning portion.

  The reflecting means may include a sliding portion that rotates in contact with the positioning member, and the third positioning portion is formed on the sliding portion.

  Further, the third and fourth positioning portions are characterized in that one is a recess and the other is a protrusion corresponding to the recess.

  Further, the present invention is characterized in that a braking member is provided for braking the engagement operation of the fourth positioning portion when the third and fourth positioning portions are engaged.

  The braking member may be a rotating member that is in contact with the positioning member and supported in a rotatable state.

  In addition, another drive unit for adjusting the angle of the reflection unit is provided, and the other drive unit transmits a driving force to the reflection unit via the positioning member.

  The present invention relates to a display device for a vehicle that displays a virtual image by reflecting display light emitted from a light emitting display, and after the opening and closing operation of the reflecting mirror, the reflecting mirror is accurately stopped at a predetermined angular position. It becomes possible to make it.

  Hereinafter, a head-up display device according to an embodiment of the present invention will be described with reference to the accompanying drawings. Note that “rightward” or “leftward” in the present embodiment is a direction viewed from the side surface illustrated in FIGS. 1 and 2.

  As shown in FIG. 1, the head-up display device mainly includes a reflection means 10, a first drive means (drive means) 20, a second drive means (other drive means) 30, and a housing 40. .

  The reflection means 10 includes a reflection mirror (reflection member) 11 and a holding member 12 that holds the reflection mirror 11. The reflection mirror 11 is formed by depositing a reflective layer on a resin substrate made of polycarbonate, and reflects display light emitted from a light emitting display (not shown). The holding member 12 includes a base portion 12a, a shaft portion 12b that is pivotally supported by the housing 40, a holding portion 12c that adheres the reflection mirror 11, and a sliding portion 12d. In the sliding portion 12d, when the reflecting means 10 is opened to a predetermined angular position, the first recess (first positioning portion) 12e facing the protruding portion of the lever, which will be described later, and the reflecting means 10 are closed. There is formed a second recess 12f (third positioning portion) facing a protruding portion of the lever which will be described later. The reflecting means 10 is supported by the housing 40 so as to be rotatable by the shaft portion 12b.

  The first drive means 20 includes a stepping motor 21, a gear 22 fixed to the rotating shaft 21 a of the stepping motor 21, and a gear 23 that meshes with the gear 22. The gear 23 is disposed coaxially with the shaft portion 12 b of the holding member 12 and is fixed to the base portion 12 a of the holding member 12.

  The second drive means 30 includes a stepping motor 31, a cam 32 fixed to the rotation shaft 31a of the stepping motor 31, a frame member 33 supported by the housing 40 in a state in which it can slide in the lateral direction, A spring 34 that pulls the frame member 33 so that the frame member 33 abuts the cam 32, a lever 35 (positioning member) pivotally supported by the frame member 33, a spring 36 provided on the lever 35, And a rotating member (braking member) 37 that comes into contact with the distal end portion.

  The frame member 33 is pulled rightward by the spring 34, and the contact portion 33 a is in contact with the cam 32. The frame member 33 slides as the cam 32 rotates.

  The lever 35 has a projecting portion (second positioning portion, fourth positioning portion) 35a, and is pivotally supported by the frame member 33 in a state of being rotatable by a shaft portion 35b provided at the rear end portion. ing. The lever 35 is pushed upward by a spring 36 provided at the tip, and the protruding portion 35 a is in contact with the sliding portion 12 d of the holding member 12. Further, a concave and convex engaging portion 35 c corresponding to the concave and convex shape of the rotating member 37 is formed at the tip of the lever portion 35.

  The rotating member 37 includes a rotary damper (buffer member) including a shaft portion 37a that is pivotally supported by the frame member 33, and is supported by the frame member 33 so as to be rotatable by the shaft portion 37a. Further, the rotating member 37 is formed in an uneven shape at the contact point with the lever 35, and meshes with a meshing portion 35 c formed at the tip of the lever 35.

  Next, opening and closing of the reflecting means 10 will be described in detail. The reflective means 10 can be closed when the head-up display device is not used, and the reflective means 10 can be opened to a predetermined angular position by the first driving means 20 when used. FIG. 2 shows a state in which the reflecting means 10 is opened to a predetermined angular position. When the reflecting member 10 is opened, the rotation shaft 21 a of the stepping motor 21 rotates to the right, and the driving force of the stepping motor 21 is transmitted to the holding member 12 via the gear 22 and the gear 23. The sliding portion 12d of the holding member 12 rotates counterclockwise while coming into contact with the protruding portion 35a of the lever 35, and when the reflecting means 10 rises to a predetermined angular position, the first concave portion 12e of the holding member 12 is obtained. Faces the protrusion 35a of the lever 35. At this time, since the tip end of the lever 35 is pushed upward by the spring 36, the lever 35 rotates clockwise around the shaft portion 35b, and the projecting portion 35a is engaged with the first recess 12e. 10 is positioned. Further, during the engaging operation of the protruding portion 35a, the tip end portion of the lever 35 moves upward while rotating the rotating member 37 engaged with the engaging portion 35c counterclockwise. Therefore, the rotating member 37 buffers the collision between the projecting portion 35a and the first recessed portion 12e by applying a constant load on the distal end portion of the lever 35 to oppose the upward movement, and the engagement of the projecting portion 35a. By decelerating the operation, the collision between the protrusion 35a and the first recess 12e is alleviated and the occurrence of a collision sound is suppressed.

  FIG. 3 shows a state where the reflecting means 10 is closed. When the reflecting means 10 is closed, the rotation shaft 21a of the stepping motor 21 rotates to the left, and the driving force of the stepping motor 21 is transmitted to the holding member 12 via the gear 22 and the gear 23. The sliding portion 12d of the holding member 12 rotates clockwise while contacting the protruding portion 35a of the lever 35, and when the reflecting means 10 is closed, the second recess 12f of the holding member 12 is Opposite to the protrusion 35a. At this time, since the tip of the lever 35 is pushed upward by the spring 36, the lever 35 rotates clockwise around the shaft 35b, and the protrusion 35d is engaged with the second recess 12f, and the reflecting means. 10 is positioned. Further, during the engaging operation of the protruding portion 35a, the tip end portion of the lever 35 moves upward while rotating the rotating member 37 engaged with the engaging portion 35c counterclockwise. Therefore, the rotation member 37 buffers the tip 35 of the lever 35 against a collision between the protrusion 35a and the second recess 12f by applying a constant load that opposes the upward movement, and the engagement of the protrusion 35a. By decelerating the operation, the collision between the protrusion 35a and the second recess 12f is alleviated and the occurrence of a collision sound is suppressed. The state in which the reflecting means 10 is closed refers to a state in which the angular position of the reflecting means 10 is at an angular position such that the display surface of the reflecting mirror 11 deviates from the user's line of sight.

  Next, the angle adjustment of the reflecting means 10 will be described in detail. When the reflecting means 10 is opened to a predetermined angular position, the second driving means 30 can be driven by operating a push button switch (not shown) to adjust the angle A of the reflecting means 10 (FIG. 4). reference). The second driving means 30 is configured to transmit the driving force of the stepping motor 31 to the holding member 12 via the cam 32, the frame member 33, and the lever 35 to displace the angular position of the reflecting means 10. That is, when the angle A of the reflecting member 10 is increased, the cam 32 rotates to the left together with the rotating shaft 31a of the stepping motor 31, the frame member 33 and the lever 35 slide to the left, and the holding member 12 rotates counterclockwise. To turn.

  When the angle A of the reflecting member 10 is decreased, the cam 32 rotates to the right together with the rotation shaft 31a of the stepping motor 31, the frame member 33 and the lever 35 slide to the right, and the holding member 12 rotates clockwise. To turn.

  Such a head-up display device has a protrusion 35a corresponding to the first recess 12e and the second recess 12f provided in the reflection means 10, and the protrusion 35a is opened in a state where the reflection means 10 is opened at a predetermined angular position. Is engaged with the first recess 12e, and a lever 35 is provided for engaging the protrusion 35a with the second recess 12f with the reflecting means 10 closed. The reflecting means 10 includes a sliding portion 12d that rotates in contact with the protruding portion 35a of the lever 35. The sliding portion 12d is formed with a first concave portion 12e and a second concave portion 12f. It is. With the above configuration, the positioning when the reflecting means 10 is opened is performed by the engagement between the first recess 12e and the projecting portion 35a, and the positioning when the reflecting means 10 is closed is projected with the second recess 12f. Since it is performed by engaging with the portion 35a, when the reflecting means 10 is opened or the reflecting means 10 regardless of the operating environment of the stepping motor 21 provided in the first driving means 20 or the meshing state of the gears 22 and 23, etc. When is closed, the reflecting means 10 can be accurately stopped at a predetermined angular position.

  The head-up display device is in contact with the tip of the lever 35 and supported in a rotatable state, and when the first recess 12e and the protrusion 35a are engaged, and when the second recess 12f and the protrusion are protruded. When the part 35a is engaged, a rotating member 37 that brakes the engaging operation of the protruding part 35a is provided. With the above configuration, it is possible to suppress the occurrence of a collision sound when the protrusion 35a contacts the first recess 12e or the second recess 12f by decelerating the engagement operation of the protrusion 35a. It becomes possible.

  Further, the head-up display device includes a second driving unit 30 for adjusting the angle of the reflecting unit 10, and the second driving unit 30 transmits a driving force to the reflecting unit 10 via the lever 35. It will be. According to the above configuration, since the opening / closing operation and the angle adjustment of the reflecting means 10 are performed by the first driving means 20 and the second driving means 30, respectively, the reflecting means 10 can be opened / closed quickly and easily. In addition, the angle of the reflecting means 10 can be adjusted.

  In addition, although the reflection means 10 of this embodiment has the reflective mirror 11 as a reflective member, you may use the translucent reflective member called a combiner.

  In the present embodiment, the reflecting means 10 includes first and second recesses 12e and 12f as first and third positioning portions, and the lever 35 has first and second positioning portions as first and second positioning portions. Although the projections 35a corresponding to the second recesses 12f and 12f are provided, the shapes of the first to fourth positioning portions are not limited to the present embodiment, and for example, as the first and third positioning portions. The reflecting means may be provided with protrusions, and the positioning member may be provided with recesses corresponding to the protrusions as the second and fourth positioning parts.

  Moreover, although this embodiment was provided with the rotation member 37 which consists of a rotary damper as a braking member, a braking member is not limited to this embodiment, For example, while contacting a positioning member and friction force The engaging operation of the positioning portion may be braked by

The side view which shows embodiment of this invention. The side view which shows embodiment same as the above. The side view which shows embodiment same as the above. The side view which shows embodiment same as the above. The schematic block diagram which shows a prior art example. The side view which shows a prior art example same as the above.

Explanation of symbols

10 Reflecting means 11 Reflecting mirror (reflective member)
12 holding member 12b shaft portion 12e first recess (first positioning portion)
12f 2nd recessed part (3rd positioning part)
20 First drive means (drive means)
30 Second drive means (other drive means)
35 Lever (positioning member)
35a Protruding part (second positioning part, fourth positioning part)
37 Rotating member (braking member)
40 housing

Claims (10)

A display device for a vehicle that displays a virtual image by reflecting display light emitted from a display,
Reflecting means comprising a reflecting member for reflecting the display light, and supported in an openable / closable state;
Driving means for opening and closing the reflecting means;
A second positioning portion corresponding to the first positioning portion provided in the reflecting means; and the second positioning portion is used as the first positioning portion in a state where the reflecting means is opened at a predetermined angular position. A positioning member to be engaged;
A vehicle display device comprising: The said reflecting means is provided with the sliding part rotated in the state contact | abutted with the said positioning member, and said 1st positioning part is formed in the said sliding part, The said 1st positioning part is characterized by the above-mentioned. Vehicle display device. 2. The vehicle display device according to claim 1, wherein one of the first and second positioning portions includes a concave portion and the other includes a protruding portion corresponding to the concave portion. The vehicle display device according to claim 1, further comprising a braking member that brakes an engagement operation of the second positioning portion when the first and second positioning portions are engaged. . A display device for a vehicle that displays a virtual image by reflecting display light emitted from a display,
Reflecting means comprising a reflecting member for reflecting the display light, and supported in an openable / closable state;
Driving means for opening and closing the reflecting means;
A positioning member having a fourth positioning portion corresponding to a third positioning portion provided in the reflecting means, and engaging the fourth positioning portion with the third positioning portion in a state where the reflecting means is closed. When,
A vehicle display device comprising: The said reflection means is provided with the sliding part which rotates in the state contact | abutted with the said positioning member, and the said 3rd positioning part is formed in the said sliding part, The Claim 6 characterized by the above-mentioned. Vehicle display device. The vehicle display device according to claim 5, wherein one of the third and fourth positioning portions includes a concave portion and the other includes a protruding portion corresponding to the concave portion. The vehicle display device according to claim 5, further comprising a braking member that brakes an engagement operation of the fourth positioning portion when the third and fourth positioning portions are engaged. . The vehicle display device according to claim 4, wherein the braking member is a rotating member that is in contact with the positioning member and is supported in a rotatable state. The other driving means for adjusting the angle of the reflecting means is provided, and the other driving means transmits a driving force to the reflecting means via the positioning member. The vehicle display device according to claim 5.

Images