JP2004196228A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a vehicle capable of rapidly opening/closing a reflective mirror and easily adjusting the angle of the reflective mirror. <P>SOLUTION: This display device for the vehicle displays a virtual image by reflecting display light emitted from a display. A reflective means 10 is supported in an openable state and reflects the display light. A first drive means 20 opens/closes the reflective means 10. The first drive means 20 comprises a first motor 21 for angularly displacing the reflective means 10, and drive mechanisms 22 and 23 transmitting a drive force from a first motor 21 to the reflective means 10. A second drive means 30 adjust the angle of the reflective means 10. The second drive means 20 comprises a second motor 31 for angularly displacing the reflective means 10 and second drive mechanisms 32, 33, and 35 transmitting a drive force from the second motor 31 to the reflective means 10. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
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.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, various head-up display devices for displaying 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 reflects the display light L emitted from the light emitting display 2 by the reflection mirror 3 to display a virtual image V (see FIG. 3). . The reflection mirror 3 is adhered to a holding member 4, and the holding member 4 is rotatably supported by the housing 5 so that the reflection mirror 3 can be opened and closed (see FIG. 4).
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. Sho 63-9041
A gear 6 is fixed to the holding member 4, and a gear 8 fixed to a rotating shaft 7 a of a motor 7 is meshed with the gear 6. The reflection mirror 3 can be opened and closed about the rotation axis 4a of the holding member 4, and when the head-up display device is not used, the reflection mirror 3 is closed, and when the head-up display device is used, it is reflected by the driving force of the motor 7. The mirror 3 can be opened to a predetermined angular position. Further, in order to adjust the angular position of the reflecting mirror 3 according to the driver's eye level, the motor 7 can be driven by operating a push button switch (not shown) to rotate the reflecting mirror 3.
[0005]
[Problems to be solved by the invention]
However, since the turning operation of the reflecting mirror 3 is fast so that the opening and closing of the reflecting mirror 3 can be performed quickly, in adjusting the angle of the reflecting mirror 3, the reflecting mirror 3 may be stopped at a desired angular position. Had the problem of being difficult. That is, the opening / closing operation of the reflecting mirror 3 is fast, so that the holding member 4 can be rotated about 60 ° within a predetermined time (for example, within 2 seconds) to open / close the reflecting mirror 3. It was difficult to adjust the delicate angle of the camera.
[0006]
To solve this problem, it is conceivable to slow down the turning operation of the reflecting mirror 3 by providing another reduction gear between the gear 8 and the gear 6, for example, but the opening and closing operation of the reflecting mirror 3 is slowed down. As a result, there is a possibility that a new problem that the reflection mirror 3 cannot be opened and closed within a predetermined time may occur.
The present invention has been made in view of this problem, and provides a vehicle display device that can quickly open and close a reflecting mirror and easily adjust the angle of the reflecting mirror.
[0007]
[Means for Solving the Problems]
The present invention is directed to a vehicle display device for displaying a virtual image by reflecting display light emitted by a display device, as described in claim 1, in order to solve the above problem, and is supported in an openable and closable state. It has a reflecting means 10 for reflecting the display light, a first driving means 20 for opening and closing the reflecting means 10, and a second driving means 30 for adjusting the angle of the reflecting means 10.
[0008]
Further, according to the present invention, as described in claim 2, the first driving means 20 emits a first motor 21 for angularly displacing the reflecting means 10 and the first motor 21 emits light. First driving mechanisms 22 and 23 for transmitting a driving force to the reflecting means 10; the second driving means 20 includes a second motor 31 for angularly displacing the reflecting means 10; And second driving mechanisms 32, 33, and 35 for transmitting the driving force generated by the second motor 31 to the reflection means 10.
[0009]
Further, according to the present invention, as set forth in claim 3, the second drive mechanism has a positioning member 35 for stopping the reflection means 10 at a predetermined angular position where the reflection means 10 is opened. .
[0010]
Further, according to the present invention, as described in claim 4, the second drive mechanism has a frame member 33 that supports the positioning member 35, and the second driving mechanism includes The driving force generated by the second motor 31 is transmitted to the reflection means 10.
[0011]
Further, according to the present invention, as described in claim 5, the second driving mechanism transmits a driving force generated by the second motor 31 to the frame member 33, and the positioning member 35 and the frame It has a cam 32 that slides the member 33.
[0012]
Further, according to the present invention, as described in claim 6, a housing 40 that supports the reflecting means 10 in an openable / closable state and supports the frame member 33 in a slidable state is provided.
[0013]
Further, according to the present invention, as set forth in claim 7, the reflecting means 10 includes a reflecting mirror 11 for reflecting the display light and a shaft portion 12b supported by the housing 40. And a holding member 12 for holding.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, 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.
The head-up display device includes a reflecting unit 10, a first driving unit 20, a second driving unit 30, and a housing 40.
[0015]
The reflection means 10 has a reflection mirror 11 and a holding member 12 for holding the reflection mirror 11. The reflection mirror 11 is formed by depositing a reflection layer on a resin substrate made of polycarbonate, and reflects the display light L emitted from the light emitting display. The holding member 12 has a base portion 12a, a shaft portion 12b supported by the housing 40, a holding portion 12c for attaching the reflection mirror 11, and a sliding portion 12d. The sliding portion 12d is formed with a concave portion 12e which faces a later-described lever protruding portion when the reflecting means 10 is opened to a predetermined angular position. The reflection means 10 is supported by the housing 40 so as to be rotatable by the shaft portion 12b.
[0016]
The first driving means 20 includes a stepping motor 21 (first motor), a gear 22 (first driving mechanism) fixed to a rotating shaft 21 a of the stepping motor 21, and a gear meshing with the gear 22. 23 (first drive mechanism). The gear 23 is arranged coaxially with the shaft 12 b of the holding member 12 and is fixed to the base 12 a of the holding member 12.
[0017]
The second drive means 30 is slidable in the lateral direction with a stepping motor 31 (second motor), a cam 32 (second drive mechanism) fixed to a rotation shaft 31a of the stepping motor 31. A frame member 33 (second drive mechanism) supported by the housing 40 in the state, a spring 34 for pulling the frame member 33 so that the frame member 33 contacts the cam 32, and a lever supported by the frame member 33 35 (positioning member; second drive mechanism) and a spring 36 provided at the tip of the lever 35.
[0018]
The frame member 33 is pulled rightward by a 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 35a, and is pivotally supported by the frame member 33 in a rotatable state by a shaft portion 35b provided at a rear end portion. The lever 35 is pulled upward by a spring 36 provided at the distal end, and the protrusion 35 a is in contact with the sliding portion 12 d of the holding member 12.
[0019]
Next, the opening and closing of the reflection means 10 will be described in detail. When the head-up display device is not used, the reflecting means 10 is closed, and when used, the first driving means 20 can open the reflecting means 10 to a predetermined angular position. When the reflection member 10 is opened, the rotation shaft 21a of the stepping motor 21 turns left, and the driving force of the stepping motor 21 is transmitted to the holding member 12 via the gears 22 and 23. The sliding portion 12d of the holding member 12 rotates clockwise while abutting on the protrusion 35a of the lever 35, and when the reflecting means 10 rises to a predetermined angle position, the concave portion 12e of the holding member 12 The reflection means 10 is positioned so as to face the projection 35a.
[0020]
When the reflecting member is closed, the rotation shaft 21a of the stepping motor 21 turns right, and the driving force of the stepping motor 21 is transmitted to the holding member 12 via the gears 22 and 23. The sliding portion 12d of the holding member 12 rotates counterclockwise while abutting on the protrusion 35a of the lever 35.
[0021]
Next, the angle adjustment of the reflection means 10 will be described in detail. When the reflecting means 10 is opened to a predetermined angle position, the angle A of the reflecting means 10 can be adjusted by operating a push button switch (not shown). When the angle A of the reflecting member 10 is increased, the cam 32 rotates to the left along 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 to the right. Move.
[0022]
When the angle A of the reflection member 10 is reduced, the cam 32 rotates clockwise together with the rotation 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 rotate.
[0023]
According to the present embodiment, since the opening and closing 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 quickly opened and closed, and Angle adjustment of 10 is easy.
Although the reflecting means 10 of the present embodiment has the reflecting mirror 11, a semi-transmissive reflecting member called a combiner may be used. Further, the motors of the present embodiment are the stepping motors 21 and 31, but may be, for example, servo motors.
[0024]
【The invention's effect】
The present invention is a vehicular display device that displays a virtual image by reflecting display light emitted from a display device, and includes a reflection unit that is supported in an openable and closable state and reflects the display light, and opens and closes the reflection unit. It has a first drive unit and a second drive unit for adjusting the angle of the reflection unit, and can quickly open and close the reflection mirror, and can easily adjust the angle of the reflection mirror. it can.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a side view showing the embodiment.
FIG. 3 is a schematic configuration diagram showing a conventional example.
FIG. 4 is a side view showing the conventional example.
[Explanation of symbols]
Reference Signs List 10 Reflecting means 11 Reflecting mirror 12 Holding member 12b Shaft 20 First driving means 21 Stepping motor (first motor)
22 gears (first drive mechanism)
23 gears (first drive mechanism)
30 second driving means 31 stepping motor (second motor)
32 cam (second drive mechanism)
33 Frame member (second drive mechanism)
35 lever (second drive mechanism)
35a Projecting part (positioning part)
40 housing

Claims (7)

A vehicle display device that reflects a display light emitted by a display to display a virtual image,
A reflecting unit that is supported in an openable and closable state and reflects the display light; a first driving unit that opens and closes the reflecting unit; and a second driving unit that adjusts an angle of the reflecting unit. Vehicle display device. The first driving unit has a first motor for angularly displacing the reflecting unit, and a first driving mechanism for transmitting a driving force generated by the first motor to the reflecting unit,
The second driving means has a second motor for angularly displacing the reflecting means, and a second driving mechanism for transmitting a driving force generated by the second motor to the reflecting means. The display device for a vehicle according to claim 1, wherein: The vehicle display device according to claim 2, wherein the second drive mechanism includes a positioning member that stops the reflection unit at a predetermined angular position where the reflection unit is opened. The second driving mechanism has a frame member that supports the positioning member, and transmits a driving force generated by the second motor to the reflection unit via the positioning member and the frame member. The vehicle display device according to claim 3. The said 2nd drive mechanism has the cam which transmits the driving force which the said 2nd motor emitted to the said frame member, and slides the said positioning member and the said frame member, The Claims 4 characterized by the above-mentioned. Vehicle display device. The vehicle display device according to claim 5, further comprising a housing that supports the reflection unit in an openable / closable state and supports the frame member in a slidable state. 7. The vehicle according to claim 6, wherein the reflection unit includes a reflection mirror that reflects the display light, and a holding member that has a shaft supported by the housing and holds the reflection mirror. Display device.

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