JP5131644B2 - Display device - Google Patents

Description

  The present invention relates to a display device suitable for use as, for example, a vehicle meter, and more particularly to a display device that indicates a measured value on the outer periphery of a display window provided on a display board.

  As this type of display device, for example, those described in Patent Documents 1 to 3 below are known. Each of the display devices described in Patent Documents 1 to 3 has a display window that allows the display plate to visually recognize a display unit made of a liquid crystal display device or the like, and a measured value such as a vehicle speed on the outer periphery of the display window. In order to instruct the indicator, an indicator part such as a scale or numeral is provided at the display plate part located around the display window, a pointer is arranged in front of the indicator part, and the pointer is provided through a pointer drive mechanism provided behind the display board. Is operated to indicate the indicator part.

Among these Patent Documents 1 to 3, the pointer drive mechanism described in Patent Document 1 includes a ring gear to which the pointer is fixed and the display means can be visually recognized, a support means for supporting the ring gear, a stepping motor for rotating the ring gear, and the like. The ring gear supported by the support means is rotated through the drive source, and the pointer indicates the indicator unit according to the rotation.

  The pointer drive mechanism described in Patent Document 2 is a belt made of a flexible material with a pointer fixed and a display means visible, a support means for supporting the belt, and a stepping motor for moving the belt. The belt supported by the support means is moved through the drive source, and the pointer indicates the indicator unit in accordance with this movement.

  The pointer drive mechanism described in Patent Document 3 includes a ball chain in which a pointer is fixed and a display unit is provided so as to be visible, a support unit that supports the ball chain, a drive source such as a stepping motor that moves the ball chain, The ball chain supported by the support means is moved through the drive source, and the pointer indicates the indicator unit in accordance with this movement.

JP 2006-038801 A Japanese Patent Laying-Open No. 2005-043293 JP 2005-106588 A

  However, all of the display devices described in Patent Documents 1 to 3 support the movable body in addition to the movable body such as a ring gear, a belt, and a ball chain in order to operate the pointer on the outer periphery of the display window. This requires a large pointer drive mechanism comprising a supporting means for driving and a drive source for driving the movable body, and therefore there is a problem that the cost is increased.

  The present invention aims to provide a display device capable of reducing the cost by paying attention to the above-mentioned problems.

In order to solve the above-described problem, the present invention is arranged behind a display panel having a first display window and an indicator portion formed along the outer periphery of the first display window. Display means, and the display means includes a first display area that is visible through the first display window and a second display area that is covered with the display plate and becomes invisible, The display panel includes an image display device that displays a first display image including arbitrary information in a display area and a second display image that indicates the indicator unit in the second display area. A second display window extending along the indicator portion is formed outside the first display window, and is behind the display plate and between the second display window and the second display area. The second display window is reflected by reflecting the second display image toward the second display window. Through it, characterized in that a reflective means for viewing the second display image.
According to such a configuration, since the indicator portion is instructed by the second display image formed by the display unit, a movable body for moving the pointer, a support unit, and a pointer driving mechanism such as a driving source are unnecessary. Cost reduction can be realized.

In the invention, it is preferable that the second display image is a belt-like image whose display length changes according to the position of the index portion to be indicated.
According to such a configuration, since the index portion is indicated by the band-like image whose display length changes, the visibility can be improved.

Further, the present invention provides a first reflecting member in which the reflecting means faces the second display area and reflects the second display image in a direction away from the first display area, and the first reflecting member. And a second reflecting member that faces each of the second display windows and reflects the second display image reflected through the first reflecting member toward the display window. .
According to such a configuration, it is possible to configure the reflecting means with the minimum necessary configuration, which is effective in reducing the cost.

According to the present invention, a lens member having a convex surface at least on the viewer side is disposed in the second display window.
According to this, it is possible to give a stereoscopic effect to the display and enable a novel appearance.

  According to the present invention, it is possible to provide a display device that can achieve the initial purpose and can reduce the cost.

1 is a front view of a display device according to a first embodiment of the present invention. AA sectional drawing of FIG. The front view of the display apparatus by the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 and 2 show a first embodiment of a display device according to the present invention, FIG. 1 is a front view of the display device according to the present embodiment, and FIG. 2 is a cross-sectional view taken along line AA of FIG. (Hatching is omitted).

  1 and 2, the display device according to the present embodiment is incorporated in, for example, a combination meter for automobiles, and includes a case 1, a circuit board 2, a display means 3, a display board 4, a reflection means 5, and the like. 6 and a lens member 7.

  The case 1 is made of, for example, a synthetic resin material and houses the circuit board 2.

  The circuit board 2 is made of, for example, a known hard circuit board, and has various wiring patterns and circuit elements (not shown).

  The display means 3 is an image display device using a dot matrix type liquid crystal panel as a display element and incorporating various optical components and a backlight, and includes a first display window corresponding to a first display window (to be described later) of the display panel 4. It has a display area AR1 and a second display area AR2 that is covered with the display plate 4 and becomes invisible.

  The first display area AR1 is formed in a circular shape corresponding to the shape of the first display window, and displays a first display image 31 composed of arbitrary information, for example, navigation information according to an input signal from a navigation unit (not shown). To do. In the example shown in FIG. 1, the example which shows the 1st display image 31 which consists of navigation information (course guidance information) by the character information "300m ahead left turn" is shown.

  The second display area AR2 is formed in a circular arc shape along the array shape of the indicator portions (to be described later) of the display board 4, and is formed in a circular shape corresponding to the shape of the first display window. In response to the signal, a second display image 32 that is a pointer image indicating the indicator portion is displayed. In the example shown in FIG. 1, the second display image 32 indicates the indicator portion “60”, thereby notifying the observer that the current vehicle speed is “60 km / h”. The second display image 32 is not directly viewed by an observer but is viewed through the reflecting means 5 and 6.

  The display board 4 is made of, for example, a well-known printing panel, and is provided in a case body shape that matches the case 1 by drawing.

  A first display window 41, a second display window 42, and an index portion 43 are formed on the display board 4.

  The first display window 41 corresponds to the first display area AR1 of the display means 3, and is provided in a circular shape so that the first display area AR1 can be viewed.

  The second display window 42 is outside the first display window 41 and extends in a circular arc along the indicator portion 43 at a position corresponding to the reflecting means 6, and passes through the reflecting means 5 and 6 to the observer side. It is formed so that the second display image 32 reflected on the screen can be visually recognized.

  The indicator unit 43 displays the vehicle speed by a pair of a scale unit located inside the second display window 42 and a numeric part located outside the second display window 42.

  The second display window 42 is fitted and fixed with a lens member 7 made of, for example, a transparent synthetic resin.

  The lens member 7 is formed in a bowl shape having a convex surface on the viewer side, and the second display image 32 is visually recognized through the lens member 7.

  The reflecting means 5 and 6 are composed of a pair of mirror members obtained by coating a mirror layer on the surface of a base material made of synthetic resin, for example, and each is formed in an arc belt shape along the array shape of the indicator portions 43. .

  Among these, the 1st reflection means 5 has a circular arc shape smaller than the reflection means 6, is located between the display board 4 and 2nd display area AR2, and the outer surface is 2nd display. The second display image 32 is reflected toward the second reflecting means 6 so as to be inclined so as to face the area AR2.

  The second reflecting means 6 has a larger arc belt shape than the first reflecting means 5, is located behind the display plate 4, and its inner surface is the first reflecting means 5 and the second display window. The second display image 32 reflected through the first reflecting means 5 is reflected toward the second second display window 42 and the reflected image is reflected. It is visually recognized through the lens member 7.

  As described above, in the present embodiment, the display board 4 having the first display window 41 and the indicator portion 43 formed along the outer periphery of the first display window 41, and behind the display board 4 The display means 3 is arranged, and the display means 3 has a first display area AR1 that is visible through the first display window 41 and a second display area AR2 that is covered with the display board 4 and becomes invisible. From the image display device that displays the first display image 31 made of arbitrary information in the first display area AR1 and the second display image 32 that indicates the indicator unit 43 in the second display area AR2. The second display window 42 extending along the indicator portion 43 is formed outside the first display window 41 on the display panel 4, and the second display window 42 and the second display window 42 behind the display panel 4 are formed. Between the second display area AR2 and the second display image 32 on the second display window 42 side. By providing the reflecting means 5 and 6 for visually recognizing the second display image 32 through the second display window 42, the indicator unit 43 is instructed by the second display image 32 formed by the display means 3. Therefore, a movable body that moves the pointer, a support mechanism, and a pointer drive mechanism such as a drive source are not required, and the size of the display means can be minimized, resulting in cost reduction and downsizing. Can do.

  In the present embodiment, the reflecting means 5 and 6 face the second display area AR2 and reflect the second display image 32 in the direction away from the first display area AR1. The second reflecting member 6 that faces each of the first reflecting member 5 and the second display window 42 and reflects the second display image 32 reflected through the first reflecting member 5 toward the display window 42. As a result, the reflection means can be configured with the minimum necessary configuration, which is effective in reducing the cost. In addition, the 1st, 2nd reflection means 5 and 6 can be comprised by one component by utilizing a transparent material. That is, by using the opposing outer wall surfaces of the transparent material as the first and second reflecting means 5 and 6, one part can be obtained.

  Further, in the present embodiment, the lens member 7 having a convex surface on at least the viewer side is arranged in the second display window 42, thereby giving a stereoscopic effect to the display and enabling a novel appearance.

  FIG. 3 is a front view showing a second embodiment of the present invention. In the present embodiment, the second display image 32 is a band-like image whose display length changes according to the position of the indicator portion 43 to be pointed. Is.

  That is, the position of the end portion E of the second display image 32 changes according to the position of the indicator portion 43 to be instructed, and in the example shown in FIG. 3, the current vehicle speed is instructed to be 80 km / h. ing.

  According to the present embodiment configured as described above, 43 indicators are indicated by the band-like image whose display length changes, and thus visibility can be improved.

  In the first and second embodiments, the example in which only the vehicle speed is instructed by the second display image 32 has been shown, but a plurality of measurement objects can also be instructed. The second display image 32 can be used not only for the pointer image but also for various purposes such as cruise control and warning area display.

DESCRIPTION OF SYMBOLS 1 Case 2 Circuit board 3 Display means 4 Display board 5,6 Reflection means 7 Lens member 31 1st display image 32 2nd display image 41 1st display window 42 2nd display window 43 Indicator part AR1 1st Display area AR2 Second display area E End

Claims (4)

A display panel having a first display window and an indicator portion formed along the outer periphery of the first display window;
Display means disposed behind the display board,
The display means has a first display area that is visible through the first display window and a second display area that is covered with the display plate and becomes invisible. In the first display area, arbitrary information is displayed. A first display image comprising: an image display device for respectively displaying a second display image indicating the indicator portion in the second display area;
Forming a second display window extending along the indicator portion on the outside of the first display window in the display plate;
Through the second display window, the second display image is reflected to the second display window side behind the display panel and between the second display window and the second display area. A display device comprising a reflecting means for visually recognizing the second display image. The display device according to claim 1, wherein the second display image is a band-like image whose display length changes according to the position of the index portion to be indicated. A first reflecting member for reflecting the second display image in a direction away from the first display area while the reflecting means faces the second display area; the first reflecting member; 2. The second reflecting member that faces each of the display windows and that reflects the second display image reflected through the first reflecting member toward the display window. Display device. The display device according to claim 1, wherein a lens member having a convex surface on at least an observer side is disposed in the second display window.

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