JP4984081B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a display device for a vehicle, and is particularly suitable for a display device that includes a transmissive reflection member and displays a combination of virtual image display and real image display.

Conventionally, as a display apparatus for vehicles, for example, as disclosed in Patent Documents 1 to 3, a transmission type reflection member such as a half mirror is provided in front of the light emitting display (display surface side), and the transmission type reflection member is provided. Another light emitting display is further arranged on the front side of the member, and the light emitted from the light emitting display is transmitted through the transmissive reflective member to display a real image, and the light emitted from the other light emitting display is transmitted. There is known a display device that displays a virtual image by being reflected by a reflection panel.
JP-A-9-257523 JP 2002-114058 A JP 2002-104019 A

  These vehicle display devices display a combination of real image display by a real image light emitting display and virtual image display by a virtual image light emission display so that, for example, the virtual image is displayed to an observer (particularly, a vehicle driver). A three-dimensional display visually recognized so as to be positioned in front of the real image can be obtained.

  However, these vehicle display devices can produce a three-dimensional effect due to the difference in distance between the real image and the virtual image, or can produce a sense of unity by eliminating the sense of distance, but a display effect beyond that can be obtained. I couldn't.

  An object of the present invention is to provide a vehicle display device that can improve the merchantability by obtaining a further display effect.

According to a first aspect of the present invention, there is provided a display device for a vehicle provided with a pointer and a display plate that are transmitted and illuminated by a light source mounted on a circuit board, and a first display that emits first display information. A second display device that emits second display information different from the first display information, and the first display device and an observer viewing the first display information. Transmitting and reflecting the first display information and reflecting the second display information to the viewer side, thereby combining and displaying the first and second display information, and the circuit board An illumination light source for illuminating the transmission / reflection member, and an illumination decoration unit for reflecting or refracting the illumination light from the incident illumination light source toward an observer side. It is provided .

  The present invention relates to a display device that includes a transmissive reflection member and displays a combination of virtual image display and real image display, and provides a display device for a vehicle that can improve merchantability by obtaining a further display effect.

    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle display device according to the present invention applied to a vehicle instrument will now be described by way of example with reference to the accompanying drawings.

  FIG. 1 is a diagram schematically showing the configuration of a vehicle instrument. The vehicle display device is composed of, for example, a composite instrument mounted on an instrument panel of an automobile, and includes first and second indicators 1. , 2, a transmission / reflection member 3, an illumination light source 4, and a light guide member 5.

  The first indicator 1 is a display unit for emitting measured values such as the traveling speed of the vehicle, the engine speed, and the remaining fuel amount to the observer P side as the first display information 1a. The first display 1 is disposed so as to face the observer P, and includes a pointer 11, a stepping motor 12, a display board 13, a spacer 14, and a light source 15. The pointer 11 and the display board 13 are provided at a position that can be viewed from the observer P through the transmission / reflection member 3.

  The pointer 11 includes a translucent synthetic resin material that guides light from the light source 15 and a pointer cover made of a light-shielding synthetic resin that covers the vicinity of the rotation axis of the translucent synthetic resin material. It is connected to the rotating shaft.

  The stepping motor 12 is mounted on the circuit board C together with electronic components for driving the light source 15 and the first display 1, and the rotation shaft extends through the hole of the display plate 13 to the viewer P side. . The stepping motor 12 rotates the pointer 11 according to control signals generated by a microcomputer (not shown) mounted on the circuit board C based on signals from various sensors mounted on the vehicle.

  The display board 13 is formed with a light-shielding background portion and a light-transmitting index portion to be indicated by the pointer 11 by printing on a substrate made of a light-transmitting synthetic resin.

  The spacer 14 is made of a white synthetic resin, maintains a distance between the display board 14 and the circuit board C, and reflects light from the light source 15 to reflect and illuminate the pointer 11 and the indicator portion of the display board 14. It functions as a board.

  The light source 15 is composed of, for example, a plurality of light emitting diodes mounted on the observer P side of the circuit board C, and the indicator 11 and the indicator portion of the display board 13 can be used by turning on the light source 15 even in an environment where the outside light is dark. By transmissive illumination, the first display information 1a that is easy to visually recognize can be emitted to the viewer P side.

  The second display unit 2 displays information (second display information 2a) different from the first display information 1a emitted from the first display 1, such as the travel distance of the vehicle, the outside air temperature, fuel consumption information, and the like. The liquid crystal panel 21, the light source 22, the light guide 23, and the wiring 24 are provided. Note that the second display information 2a from the second display unit 2 is provided so as to be reflected by the transmission / reflection member 3 and visible to the observer P.

  The liquid crystal panel 21 is formed of a well-known liquid crystal cell in which liquid crystal is sealed between a pair of glass substrates. The liquid crystal panel 21 is a position that is difficult to visually recognize directly from the observer P and a position that can be viewed by reflecting the surface of the transmissive reflective member 4 The direction of the display surface is set.

  As the light source 22, a plurality of light emitting diodes arranged along the end of the light guide 23 can be applied. In this case, the light source 22 is mounted on the surface on the viewer P side in the circuit board C of the first display 1.

  A light-transmitting synthetic resin having a plate shape can be applied to the light guide 23, and the light is liquid crystal from the incident part that receives light from the light source 22 and the back side (the reverse side of the display surface) of the liquid crystal panel 21. And an emission part that emits light to the panel 21 side, and is provided so as to transmit and illuminate the liquid crystal panel 21. The light transmitted through the liquid crystal panel 21 that forms a desired display image is reflected by the transmission / reflection member 3 as the second display information 2a and emitted to the observer P. The light guide 23 is formed with a concavo-convex reflecting portion or printing portion so that the light from the light source 22 can efficiently reach the liquid crystal panel 21 side.

  For the wiring 24, the liquid crystal panel 21 and the circuit board C can be electrically connected. For example, a plurality of metal lead pins, a flexible printed board, a flat cable, etc. can be applied, and the wiring 24 is connected via a connector mounted on the circuit board C. .

  The transmission / reflection member 3 has a plate shape capable of transmitting and reflecting display information and illumination light. For example, a half mirror can be applied. In this case, the transmissive reflecting member 3 is composed of a transmissive synthetic resin material, a reflective coating film, or a transmissive member coated with a metal thin film such as aluminum, and is emitted from the first display 1 as described above. By transmitting the first display information 1a to the viewer P side and reflecting the second display information 2a emitted from the second display 2 to the viewer P side, a real image display of the first display information 1a And virtual image display of the second display information 2a.

  In addition, the transmission / reflection member 3 is provided with an illumination decoration portion 31 that receives illumination light from the illumination light source 4 from an end portion on the circuit board C side and reflects the illumination light to the observer P side. In this case, the illumination decoration portion 31 is formed in a reflective surface formed at the other end of the end portion or a concavo-convex shape, but is a printing portion provided on the surface on the first display portion 1 side in the transmissive reflection member 3. Or, the refraction part having a hemispherical cross section or a notch is formed, and the illumination light from the illumination light source 4 is reflected and refracted on the observer P side to express illumination to the observer P. Can do. Moreover, when the illumination light source 4 is turned on by the shape of the illumination decoration part 31, a novel display can be emitted.

  The illumination light source 4 can apply a plurality of light-emitting diodes mounted on the surface of the circuit board C on the side of the transmission / reflection member 3, and illuminates the illumination decoration portion 31 of the transmission / reflection member 3 through the light guide member 5. .

  The light guide member 5 can apply a plate-shaped translucent synthetic resin, an incident portion that receives illumination light from the illumination light source 4, a reflection portion that reflects toward the end portion of the transmissive reflection member 3, and And an emission part for emitting illumination light to the end part side of the transmissive reflection member 3.

  Such a vehicle instrument includes a first display 1 that emits first display information 1a, a second display 2 that emits second display information 2a, the first display 1 and first display information. The first and second display information is provided between the viewer P who visually recognizes 1a, transmits the first display information 1a, and reflects the second display information 2a to the viewer P side. The transmission / reflection member 3 capable of combining and displaying 1a and 2a, the illumination light source 4 for emitting illumination light to the transmission / reflection member 3, and the illumination light incident on the transmission / reflection member 3 is reflected or refracted toward the observer P side. And an illumination decoration part 31 to be provided.

  Accordingly, it is possible to produce an illumination effect on the surface of the transmissive reflecting member 3 and to obtain a further display effect, so that the display device for a vehicle capable of improving the merchantability is obtained. In addition, the illumination light source 4 is turned on, turned off, blinked, etc., to draw the viewer's attention to the first and second display information 1a and 2a from the first and second displays 1 and 2. Can stand out. Moreover, the illumination decoration part 31 is formed on the surface of the transmission / reflection member 3, for example, as a display frame or a decoration ring of the first display information 1a or the second display information 2a, or a character or a symbol. Depending on the shape, a novel illumination display can be performed.

  The illumination light source 4 is mounted on the circuit board C of the first and second displays 1 and 2 and introduces illumination light to the transmission / reflection member 3 through the light guide member 5, so that the illumination light source 4 is simple. Depending on the configuration, lighting effects can be performed. In this case, the first and second display units 1 and 2 are both connected to the circuit board C as an example. However, it may be possible to provide different circuit boards. Even in this case, the illumination light source 4 can be mounted on any of the circuit boards, and the illumination light can be guided to the transmission / reflection member 3 via the light guide member 5, and the arrangement of the illumination light source 4 and the transmission / reflection member 3 can be freely set. The degree can be increased.

  Although the vehicular display device of the present invention has been described by way of example in the configuration of the embodiment described above, the present invention is not limited to this, and the gist of the present invention can be achieved in other configurations. It goes without saying that various improvements and design changes can be made without departing from the scope.

1 is a cross-sectional view of a display device according to a first embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st indicator 1a 1st display information 2 2nd indicator 2a 2nd display information 3 Transmission reflection member 4 Illumination light source 5 Translucent member

Claims (1)

A first indicator that emits first display information by providing a pointer or a display plate that is transmitted and illuminated by a light source mounted on a circuit board ;
A second indicator that emits second display information different from the first display information;
It is provided between the first display and an observer who visually recognizes the first display information, and transmits the first display information and reflects the second display information to the observer side. A transmission / reflection member capable of combining and displaying the first and second display information;
An illumination light source mounted on the circuit board for illuminating the transmission / reflection member,
The display device for a vehicle, wherein the transmitting / reflecting member is provided with an illumination decoration portion that reflects or refracts the incident illumination light from the incident illumination light source toward an observer.

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