JP2012083357A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of achieving cost reduction.SOLUTION: The display device comprises: first light-emitting display means 100 for forming a first light-emitting display image 150 by lighting of a light source L3; second light-emitting display means 200 which is arranged at a position nearer to an observer P than the first light-emitting display means 100 so as not to interrupt the first light-emitting display means 100 and forms a second light-emitting display image 240; and a transmission type reflector panel 400 which transmits the first light-emitting display image 150 to a side of the observer P and reflects the second light-emitting display image 240 to the side of the observer P. A circuit board 300, on which a drive control circuit for driving the first light-emitting display means 100 and the second light-emitting display means 200 is mounted, is provided to the second light-emitting display means 200 at a side opposite to the transmission type reflector panel 400. And the light source L3 is provided on a surface of the circuit board 300, facing the transmission type reflector panel 400.

Description

  The present invention relates to a display device that is mounted on, for example, a dashboard of a vehicle and displays various types of information as a display image to an observer (mainly a driver), and in particular, a light-emitting display of a type that directly displays a light-emitting display image to an observer. The present invention relates to a display device incorporating a light emitting display means of a type that projects and displays a light emitting display image on an observer through a transmissive reflection member.

  As this type of display device, for example, a device described in Patent Document 1 below is known. This display device includes a pointer-type display (first light-emitting display means) that forms a pointer-type display image (first light-emitting display image) that is arranged so as to face an observer and emits light, and the pointer-type display A light emitting display (second light emitting display means) that forms a decorative display image (second light emitting display image) that is arranged so as not to obstruct the pointer type display at a position closer to the observer than the observer, and from the observer A transmission-type reflective panel that covers the pointer-type display when viewed and is arranged to face the light-emitting display, and transmits the pointer-type display image to the observer side and the decorative display image is reflected and projected to the observer side; It has.

  In this case, the pointer-type indicator is a light-receiving display member. The pointer, a stepping motor that rotates the pointer, a display plate having an indicator unit corresponding to the operation of the pointer, and the display plate A frame that supports the stepping motor mounted on the frame; and a light source mounted on the circuit substrate. The light source emits light by illuminating the pointer and the indicator by transmitting the light source. A pointer-type display image is formed, and this pointer-type display image is visually recognized by an observer by transmitting through the transmissive reflective panel.

  On the other hand, the light emitting display is also a light receiving type display member, and a pattern display board on which a predetermined decorative pattern is formed, and a circuit board disposed on the opposite side of the pattern display board from the transmissive reflective panel side And a light source mounted on the circuit board, and by illuminating the pattern display plate by illuminating the light source, a decorative display image composed of a decorative pattern pattern that emits light is formed. The image is projected and displayed to the observer by reflecting through the reflection panel.

Japanese Patent Laying-Open No. 2005-308488 (FIG. 1)

However, the above-mentioned Patent Document 1 has a configuration in which a dedicated circuit board is incorporated in each of the pointer-type display and the light-emitting display.
The present invention has been made paying attention to this point, and its main object is to provide a display device that can achieve cost reduction.

  In order to solve the above-described problems, the present invention includes a first light-emitting display unit that is arranged to face an observer and forms a first light-emitting display image by turning on a light source, and the first light-emitting display unit. And a second light emitting display means that forms a second light emitting display image that is arranged so as not to block the first light emitting display means at a position close to the observer, and the first light emission when viewed from the observer. A transmission type covering the display means and arranged to face the second light emitting display means, and transmitting the first light emitting display image to the observer side and reflecting the second light emitting display image to the observer side. And a drive control circuit for driving the first light emitting display means and the second light emitting display means on the opposite side of the second light emitting display means from the transmissive reflective panel. Placed the circuit board, the circuit board said Characterized in that a light source to a surface facing the over-mold reflection panel.

  In the invention, the first light-emitting display means includes a light-receiving display member that receives the light from the light source to form the first light-emitting display image, and between the display member and the light source. A light guide for guiding the light from the light source to the display member is provided.

  In the invention, the first light-emitting display means includes a light-receiving display member that receives the light from the light source to form the first light-emitting display image, and between the display member and the circuit board. A connection member for electrically connecting the display member and the circuit board is provided.

  According to the present invention, it is possible to provide a display device capable of achieving cost reduction.

1 is a schematic configuration diagram showing a first embodiment of the present invention. The schematic block diagram which shows the 2nd Embodiment of this invention.

  Hereinafter, embodiments of a display device to which the present invention is applied will be described with reference to the accompanying drawings.

  FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention.

  In FIG. 1, the display device according to the present embodiment is composed of, for example, a combination meter mounted on a dashboard of an automobile, and includes a first light emitting display means 1 composed of a pointer-type display and a second liquid crystal display. The light emitting display means 2, the circuit board 3, and the transmissive reflection panel 4 disposed between the first and second light emitting display means 1 and 2.

  The first light-emitting display means 1 is disposed so as to face the observer P, and includes a pointer 11, a stepping motor 12 that rotates the pointer 11, and a display board 13 that has an indicator portion corresponding to the operation of the pointer 11. And a frame 14 that supports the display plate 13 and a first light source L1 that illuminates the pointer 11 and the display plate 13 (index unit). When the first light source L1 is turned on, the pointer 11 and the index unit are separated. A first light-emitting display image 15 formed of a pointer-type display image that emits light, for example, is formed by transmitting and illuminating a display plate 13 (in this case, the pointer 11 and the display plate 13 constitute a light-receiving display member). To do.

  The pointer 11 includes a support member made of a light-transmitting synthetic resin that emits light from the light source L1 and a pointer cover made of a light-shielding synthetic resin that covers the rotation base of the support member. It is connected to.

  The main body of the stepping motor 12 is mounted on the opposite side of the circuit board 3 from the observer P, and the rotation shaft extends through the circuit board 3 to the observer P side.

  The display board 13 is formed with a light-shielding ground portion and a light-transmitting index portion by performing screen printing on a substrate made of a light-transmitting synthetic resin.

  The frame 14 is made of milky white synthetic resin, and has a function as a reflecting plate for illuminating the pointer 11 and the display board 13 (indicator part) in addition to the function of combining the display board 13 and the circuit board 3. ing.

  The first light source L1 is composed of, for example, a plurality of light-emitting diodes arranged on the observer side of the circuit board 3, and is a pointer-type display image that emits light by illuminating the pointer 11 and the display board 13 (index portion). A first light-emitting display image is formed. The first light-emitting display image 15 thus formed is transmitted through the transmissive reflective panel 4 and is visually recognized by the observer P as a real image.

  The second light emitting display means 2 is arranged so as not to block the first light emitting display means 1 when viewed from the observer P at a position closer to the observer P than the first light emitting display means 1. And a second light source L2, a light guide 22, and a connecting member 23. When the second light source L2 is turned on, the liquid crystal panel 21 is transmitted and illuminated, for example, to emit light such as travel distance and outside temperature. The second light emitting display image 24 composed of the vehicle state information is formed.

  The liquid crystal panel 21 is a well-known liquid crystal cell in which liquid crystal molecules are sealed between a pair of glass substrates, and extends along the thickness direction of the circuit board 3 so as to face the transmissive reflection panel 4.

  The second light source L <b> 2 is composed of, for example, a plurality of light emitting diodes arranged along the end of the light guide 22, and is mounted on the observer P side of the circuit board 3.

  The light guide 22 is made of, for example, a translucent synthetic resin, and the thickness direction of the circuit board 3 covers the entire region of the liquid crystal panel 21 opposite to the transmissive reflective panel 4 from a position corresponding to the second light source L2. It is formed in the plate-shaped shape extended along.

  The connection member 23 includes, for example, a plurality of metal lead pins that electrically connect the liquid crystal panel 21 and the circuit board 3, and extends along the thickness direction of the circuit board 3 from the end of the liquid crystal panel 21 toward the circuit board 3. ing.

  In the second light emitting display means 2 configured as described above, when the second light source L2 is turned on, the light is guided through the light guide 22 to transmit and illuminate the liquid crystal panel 21, and the second light emitting display image 24 is displayed. Form. The second light-emitting display image 24 formed in this way is reflected to the viewer P side through the transmissive reflective panel 4, and is projected and viewed as a virtual image by the viewer P.

  The circuit board 3 is made of a well-known hard circuit board, and is arranged on the opposite side of the first light emitting display means 1 from the observer P. First and second light sources L1 and L2 are mounted on a circuit pattern (not shown) formed on the surface of the circuit board 3 on the viewer P side, and stepping is performed on the surface of the circuit board 3 opposite to the viewer P. The main body of the motor 12 is mounted, and the circuit pattern that is electrically connected to the connection member 23 by soldering or connector connection is formed at a position corresponding to the connection member 23 of the circuit board 3.

  In this case, a drive control circuit (not shown) for driving the stepping motor 12, the first and second light sources L1 and L2, and the liquid crystal panel 21 is mounted on the circuit board 3.

  The transmissive reflective panel 4 is made of, for example, a translucent synthetic resin material mixed with a dark pigment to reduce the light transmittance or a translucent synthetic resin material coated with a reflective coating film. The first light emission display image 15 of the light emission display means 1 is transmitted to the observer P, and the second light emission display image 24 of the second light emission display means 2 is reflected to the observer P side, whereby the first A real image display of the light emission display image 15 and a virtual image display of the second light emission display image 24 are performed.

  Here, paying attention to the second light emitting display means 2, the second light emitting display means 2 does not have a circuit board, and instead, the circuit board 3 arranged on the first light emitting display means 1 side is connected to the second light emitting display means 2. By providing a light source L2 and a drive control circuit for operating the second light source L2 and the liquid crystal panel 21, a function as a light source substrate on which the second light source L2 is mounted on the circuit board 3, and the second light source L2 and the liquid crystal A function as a control board for operating the panel 21 is provided.

  As described above, according to the present embodiment, the first light-emitting display unit 1 that is arranged so as to face the observer P and forms the first light-emitting display image 15, and the first light-emitting display unit 1. A second light-emitting display means 2 that is arranged so as not to block the first light-emitting display means 1 at a position close to the observer P and forms a second light-emitting display image 24 by turning on the second light source (light source) L2, When viewed from the viewer P, the first light-emitting display means 1 is disposed so as to cover the first light-emitting display means 1 and face the second light-emitting display means 2, and the first light-emitting display image 15 is transmitted to the viewer P side to transmit the second light emission. The display image 24 includes a transmissive reflective panel 4 that reflects toward the viewer P, and the first light-emitting display unit 1 and the second light-emitting display unit are provided on the opposite side of the first light-emitting display unit 1 from the viewer P. A circuit board 3 on which a drive control circuit for driving 2 is mounted is disposed, and this circuit board 3 When the second light source (light source) L2 is provided on the surface facing the viewer P, the second light emitting display means 2 has a light receiving type display member that requires the light source (second light source L2). Even so, since a dedicated light source substrate for mounting the light source is not necessary, cost reduction can be achieved by reducing the number of parts and the number of assembly steps.

In the present embodiment, the second light emitting display means 2 includes a liquid crystal panel (light receiving display member) 21 that receives the light from the second light source L2 and forms a second light emitting display image 24. By providing the light guide 22 for guiding the light of the second light source L2 to the liquid crystal panel 21 between the liquid crystal panel 21 and the second light source L2, the liquid crystal panel 21 can be efficiently illuminated.
Further, by configuring the light guide 22 from a plate extending in the thickness direction of the circuit board 3, the second light emitting display means 2 can be made thinner and smaller.

  In the present embodiment, the second light emitting display means 2 includes a liquid crystal panel (light receiving display member) 21 that receives the light from the second light source L2 and forms a second light emitting display image 24. Since the connection member 23 for electrically connecting the liquid crystal panel 21 and the circuit board 3 is provided between the liquid crystal panel 21 and the circuit board 3, the liquid crystal panel 21 can be driven and controlled through the circuit board 3, so that in addition to the light source board A drive control board for driving the liquid crystal panel 21 is also unnecessary, which is advantageous for cost reduction.

  In the present embodiment, the first light emitting display means 1 is a pointer-type display and the second light emitting display means 2 is a liquid crystal display. However, any light emitting display means can be applied to the first light emitting display means. The second light emitting display means can be any light emitting display means as long as it is a light receiving display member that forms a light emitting display image by turning on the light source.

  Moreover, in this embodiment, although the example which illuminates the liquid crystal panel 21 using the light guide 22 in the 2nd light emission display means 2 was shown, the light guide 22 can also be omitted. Further, in the second light emitting display means 2, the case where the connecting member 23 for electrically connecting the liquid crystal panel 21 and the circuit board 3 is made of a metal lead pin has been shown, but a flexible flat cable or FPC (Flexible Print Circuit).

  FIG. 2 is a schematic configuration diagram showing a second embodiment of the present invention.

  In FIG. 2, the display device according to the present embodiment is arranged so as to face the observer P, and the first light emitting display means 100 that forms a first light emitting display image 150 by turning on the light source L3, and the first light emitting display means 100. A second light-emitting display means 200 which is arranged so as not to block the first light-emitting display means 100 at a position closer to the observer P than the light-emitting display means 100 and forms a second light-emitting display image 240; The first light emitting display means 100 is arranged so as to cover the first light emitting display means 100 and to face the second light emitting display means 200, and the first light emitting display image 150 is transmitted to the viewer P side, and the second light emitting display image 240 is observed. A transmissive reflective panel 400 that reflects toward the person P side, and the first luminescent display means 100 and the second luminescent display means 200 on the opposite side of the transmissive reflective panel 400 of the second luminescent display means 200. Drive Place the circuit board 300 to drive control circuit is mounted in order, in which the light source L3 were provided on the surface facing the transmissive reflection panel 400 side of the circuit board 300.

  The first light emitting display means 100 includes, for example, a liquid crystal panel 101, a light guide 102, a connection member 103, and a light source L3. The liquid crystal panel 101, the light guide 102, the connection member 103, and the light source L3 are The same liquid crystal panel 21, light guide 22, connection member 23, and second light source L2 of the first embodiment are applied, and the light guide 102 and connection member 103 are arranged in the thickness direction of the circuit board 300. Extending along.

  The 2nd light emission display means 200 consists of a self-luminous type display member which consists of organic electroluminescent (EL) panel 201, for example.

  According to the display device according to the present embodiment configured as described above, even if the first light emitting display means 100 is the liquid crystal panel 101 (light receiving display member) that requires the light source L3, the light source L3 is mounted. For this reason, a dedicated light source substrate is not required, and thus cost reduction can be achieved by reducing the number of parts and the number of assembly steps.

In the present embodiment, the first light emitting display means 100 has a liquid crystal panel 101 (light receiving type display member) that receives the light from the light source L3 and forms a first light emitting display image 150. By providing the light guide 102 that guides the light of the light source L3 to the liquid crystal panel 101 between the light source L3 and the light source L3, the liquid crystal panel 101 can be efficiently illuminated.
Further, by configuring the light guide body 102 as a plate extending in the thickness direction of the circuit board 3, the first light emitting display means 100 can be reduced in thickness and size.

  In the present embodiment, the first light emitting display means 100 has a liquid crystal panel 101 (light receiving type display member) that receives the light from the light source L3 and forms a first light emitting display image 150. Since the connection member 103 for electrically connecting the liquid crystal panel 101 and the circuit board 300 is provided between the circuit board 300 and the circuit board 300, the liquid crystal panel 101 can be driven and controlled through the circuit board 300. Therefore, in addition to the light source board, the liquid crystal panel A drive control board for driving 101 is also unnecessary, which is advantageous for cost reduction.

DESCRIPTION OF SYMBOLS 1 1st light emission display means 2 2nd light emission display means 3 Circuit board 4 Transmission-type reflective panel 11 Pointer 12 Stepping motor 13 Display board 14 Frame 15 1st light emission display image 21 Liquid crystal panel 22 Light guide 23 Connection member 24 Second light-emitting display image 100 First light-emitting display means 101 Liquid crystal panel 102 Light guide 103 Connection member 150 First light-emitting display image 200 Second light-emitting display means 201 Organic EL panel 240 Second light-emitting display image 300 Circuit Substrate 400 Transmission-type reflective panel L1 First light source L2 Second light source L3 Light source P Observer

Claims (3)

A first light emitting display means that is arranged to face the observer and forms a first light emitting display image by turning on the light source;
A second light emitting display means which is arranged so as not to block the first light emitting display means at a position closer to the observer than the first light emitting display means, and forms a second light emitting display image;
When viewed from the observer, the first light-emitting display means is disposed so as to cover the second light-emitting display means, and the first light-emitting display image is transmitted to the observer side and the second light emission is displayed. The display image includes a transmissive reflection panel that reflects toward the viewer side,
A circuit board on which a drive control circuit for driving the first light emitting display means and the second light emitting display means is mounted on the opposite side of the second light emitting display means from the transmissive reflective panel;
A display device, wherein the light source is provided on a surface of the circuit board facing the transmissive reflective panel.   The first light emitting display means has a light receiving type display member that receives light from the light source to form the first light emitting display image, and the light of the light source is emitted between the display member and the light source. The display device according to claim 1, further comprising a light guide that guides the display member. The first light emitting display means has a light receiving type display member that receives the light from the light source to form the first light emitting display image, and the display member and the circuit board are disposed between the display member and the circuit board. The display device according to claim 1, further comprising a connection member that electrically connects the circuit board.

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