JP2010181316A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device having superior assembly workability with a simplified structure, concerning the display device including a first display device and a second display device. <P>SOLUTION: The display device includes; a first light-emitting display device 1 for displaying an actual image by illumination light from a first light source 14; a second light-emitting display device 2 arranged sidewards on the front side of a half mirror 3, for displaying a virtual image by reflection by the half mirror 3 by illumination light from a second light source 23; and a case 6 in which first and second displays 1, 2, the first and second light sources 14, 23 and the half mirror 3 are assembled and held together. The display device also includes; a circuit board 4 held in the case 6, on which the first light source 14, the second light source 23 and the first light-emitting display device 1 are mounted; and connectors 5, 51 provided for electrically drawing around and forming to the outside through the circuit board 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device that is mounted on a moving body such as an automobile, a motorcycle, and a ship, and displays a real image and a virtual image superimposed on each other through a half mirror.

  As this type of display device, those described in, for example, Patent Document 1 and Patent Document 2 below are known. This display device, for example, covers a front of a first light-emitting display (first light-emitting display means) that displays various types of measurement information with a half mirror (transparent panel), and does not block the viewer's line of sight. A second light emitting display (second light emitting display means) is disposed in front of the first light emitting display, and the first light emitting display image formed by the first light emitting display is transmitted through a half mirror to display a real image. A display device has been proposed in which a second light-emitting display image formed by two light-emitting displays is reflected by a half mirror to display a virtual image.

Japanese Utility Model Publication No. 6-49154 JP-A-9-288457 Japanese Patent Laying-Open No. 2005-300399

  By the way, in the above-mentioned Patent Document 1 to Patent Document 3, etc., according to such a display device, for example, a first light emitting display device in which a second light emitting display image that is a virtual image display, which is a second light emitting display device, becomes a real image. By displaying the image at a position deeper than the first light emitting display image, a stereoscopic effect can be produced. However, according to the display device described above, many components such as a light guide plate and a diffusion plate are required to form the second light-emitting display image in addition to the components constituting the first light-emitting display image. In addition, a light source for illuminating the second light-emitting display image and a circuit board for electrical connection with the light source are required. For this reason, although not shown in the figure, the circuit board on which the light source for illuminating the second light-emitting display image is mounted directly from the circuit board to the power supply side of the vehicle, or the first light-emitting display For example, it is formed so as to be electrically routed through a wiring cord or a flexible printed wiring board, and electrically routed from the circuit board side provided in the first light emitting display device to the power source side of the vehicle. Therefore, there is a problem that the number of parts to be assembled increases, the number of assembling steps for the parts increases, and the cost increases and the assembling work tends to be complicated.

  The present invention pays attention to such problems, and provides a display device that can improve cost reduction and assembly workability when adopting virtual image display.

  In order to achieve the above object, the present invention provides a first light emitting display for displaying a real image by illumination light from a first light source, a half mirror disposed on the front side of the first light emitting display, and the half mirror. A second light-emitting display disposed on the side of the front side of the mirror and reflected by the illumination light from the second light source through the half mirror to display a virtual image; the first and second light-emitting displays; In a display device comprising: a case body formed by assembling and holding the first and second light sources and the half mirror; the first light source, the second light source, and the A display device comprising: a circuit board on which a first light-emitting display is mounted; and a connector provided to be electrically routed and formed outside through the circuit board.

  Therefore, on a circuit board made of a single substrate, a first light source that illuminates the first light emitting display, a second light source that illuminates the second light emitting display, the first light emitting display, By mounting the circuit board, it is possible to increase the mounting density of the circuit board and to reduce the number of components for routing wiring, and to assemble and fix each component sequentially with the circuit board as a reference. Therefore, there is an effect that the assembling work can be easily performed.

  Further, in the display device according to claim 1, in claim 2, the case body includes an intermediate case that holds the circuit board, an upper case that holds the second light emitting display, and a rear side of the circuit board. And a lower case covering the display.

  By configuring in this way, the middle case can be assembled with the circuit board as a reference, and the upper case and the lower case can be assembled and held in order, so that the assembling work can be performed easily.

  Further, in the display device according to claim 1 or 2, in claim 3, the virtual image display of the second light emitting display is illuminated and displayed as a background of the real image display of the first light emitting display. This is a display device.

  With this configuration, the first light emitting display made of real image display can be illuminated and displayed with a sense of depth by the second light emitting display with virtual image display made of the background, and the appearance is good. It can be.

  Further, in the display device according to any one of claims 1 to 3, in claim 4 or 5, the second light source is provided such that an illumination color or illumination luminance can be arbitrarily adjusted. This is a characteristic display device.

  With this configuration, the illumination color or illumination brightness of the second light-emitting display is arbitrarily adjusted with respect to the illumination color or illumination brightness of the first light-emitting display, thereby adding to the stereoscopic display. The decoration effect by virtual image display can be expected.

  6. The display device according to claim 1, wherein the first light source and the second light source are turned on with a predetermined time difference. It is.

  With this configuration, the timing of illumination display between the first light-emitting display and the second light-emitting display is changed by providing a time difference between the first and second light sources, and thus a novel appearance. It becomes.

  In the present invention, a first light-emitting display that displays a real image by illumination light from a first light source, a half mirror disposed on the front side of the first light-emitting display, and a side on the front side of the half mirror A second light-emitting display that is disposed on the second light source and is reflected by the illumination light from the second light source through the half mirror to display a virtual image, the first and second light-emitting displays, and the first and second light sources And a case body formed by assembling and holding the half mirror, wherein the first light source, the second light source, and the first light emitting display are held by the case body. Since the display device is characterized by comprising a circuit board to be mounted and a connector provided to be electrically routed to the outside through the circuit board, the circuit board comprising a single board First emission table The mounting density of the circuit board can be increased by mounting the first light source that illuminates the device, the second light source that illuminates the second light emitting display, and the first light emitting display, It is possible to reduce the number of components for routing wiring, and the components can be assembled and fixed sequentially with reference to the circuit board, so that the assembling work can be easily performed.

FIG. 1 is a front view of a display device showing an illumination display state by only real image display according to the first embodiment of the present invention. FIG. 2 is a front view of the display device showing a state in which the illumination display by the virtual image display is superimposed on the illumination display by the real image display in FIG. FIG. 3 is a cross-sectional view of the display device showing the main part of FIGS. 1 and 2.

  1 to 3 show a first embodiment of the present invention, and the embodiment of the present invention will be described below based on these. The display device of the present invention is applied to, for example, an instrument device mounted on an automobile.

  1 to 3, the display device applied to the instrument device according to the present embodiment includes a first light emitting display 1, a second light emitting display 2, and the first and second light emitting displays 1, 2. And a half mirror 3 disposed between the two.

  In this embodiment, the first light emitting display image formed by the first light emitting display 1 is transmitted through the half mirror 3 and is displayed as a real image. In this case, the first light emitting display Reference numeral 1 denotes an instrument main body 11 that rotates a pointer shaft 11a according to a vehicle speed as a measurement value, a pointer 12 that instructs rotation via the pointer shaft 11a of the instrument main body 11, and a display board disposed behind the pointer 12 13 and a plurality of light sources 14 (first light sources for displaying a real image) that illuminate and display the pointer 12 and the display board 13 to display a real image. A plurality of indicator portions 15 such as scales, letters and numbers are formed. In the present embodiment, the index portions 15 such as scales and characters are arranged in an arc shape so as to correspond to the movement locus of the pointer 12.

  The light source 14 is a chip-type light emitting diode. When each light source 14 (first light source for displaying a real image) is turned on, as shown in FIG. A first light-emitting display image (pointer-type display image) 16 formed with the indicator unit 15 is illuminated and displayed as a real image display.

  In the present embodiment, the pointer 12 is formed by an indicator portion 12a made of a transparent synthetic resin material that can emit light with illumination light from the light source 14, and a pointer cap 12b made of a light-shielding synthetic resin, and protrudes from the pointer cap 12b by the light source 14. The indicator 12a of the pointer 12 exposed in this manner emits light, and the indicator 12a of the pointer 12 constituting a part of the first light emitting display image 16 shown in FIGS. 1 and 2 is illuminated and displayed. In addition, a printing layer is formed on the display board 13 with the light-shielding ink and the light-transmitting ink, and the indicator portion 15 constituting a part of the first light-emitting display image 16 with the printing layer made of the light-shielding ink by the light source 14. Is illuminated.

  The second light emitting display image formed by the second light emitting display 2 is reflected through the half mirror 3 and displayed as a virtual image. In this case, the second light emitting display 2 is guided by light. It is comprised by the body 21, the decoration board 22 for comprising the background of the 1st light emission display image 16, and the light source 23 which illuminates the light guide 21 and the decoration board 22. FIG.

  The light guide 21 is made of a synthetic resin material such as acrylic and is a transparent body. The light guide 21 is formed in substantially the same shape as that of the area where the display plate 13 is visually recognized, and is a substantially rectangular plate-like body. As shown by a cross-sectional portion in FIG. Is provided with a light receiving portion 211 for receiving light, and the surface facing the half mirror 3 is a flat surface, and the back surface portion receives and reflects the illumination light from the light source 23 toward the half mirror 3 side. A reflective surface 212 is formed so as to incline toward the decorative plate 22 as it moves away from the side. The reflective surface 212 is provided with fine irregularities, for example, so that the light emitted from the light source 23 is irradiated with the decorative plate 22. It is configured to function as a reflection surface 212 for supplying while diffusing with good balance.

  The decorative plate 22 for constituting the background of the first light emitting display image 16 is made of a synthetic resin material such as polycarbonate, and is colored milky white through which light is transmitted. The decorative plate 22 is provided in the vicinity of the light guide 21 between the half mirror 3 and the light guide 21. The decorative plate 22 has an outer shape substantially the same as that of the light guide 21. A pattern 221 constituting the background of the first light emitting display image 16 is formed on the decorative plate 22 on the side facing the light guide 21 by printing or the like. This pattern 221 changes so that the density of dark color (black in this embodiment) increases toward the upper side of the display board 13 of the instrument device (see FIG. 3).

  The pattern 221 applied to the decorative board 22 is formed by the dark color density of the pattern 221 by a set of fine dots. For example, the dark color density is changed by changing the interval between the crossed diagonal lines. The shape of the pattern can be set according to an appropriate shape, and in some cases, it is formed so as to change by stepwise printing inks having different transmission densities. Also good. Further, in the present embodiment, the density change is formed so as to change lightly and darkly along the vertical direction of the display board 13, but changes so as to become darker from the center of rotation of the pointer 12 toward the periphery. Alternatively, it may be formed such that the density of the center of rotation of the pointer 12 is high and changes so as to become lighter toward the periphery.

  A plurality of light sources 23 (second light sources for virtual image display) for illuminating and displaying the second light emitting display 2 are provided, and in the present embodiment, chip-type light emitting diodes are employed. In this case, a plurality of light emitting diodes that are the light sources 23 are arranged in the light receiving unit 211 of the light guide 21 as a set of, for example, a blue light emitting diode, a white light emitting diode, and a red light emitting diode.

  When the light source 23 is turned on, for example, by turning on the blue light emitting diode and the white light emitting diode, the light source 23 is turned to the decorative plate 22 side by the fine unevenness formed on the reflection surface 212 on the back surface of the light guide 21. A second light-emitting display image (background display image) 24 generated by the blue transmitted light that is reflected and guided by the illumination light and transmitted through the decorative plate 22 exits from the second light-emitting display 2 and further passes through the half mirror 3. The second light-emitting display image 24 reflected by the virtual image display is visually recognized by the observer.

  In this embodiment, the 1st light emission display 1 containing the meter main body 11, the 1st light source 14, and the 2nd light source 23 are mounted in the circuit board 4, and this circuit board 4 is glass, for example A driving means (not shown), a resistor, a capacitor, etc., which are made of a hard circuit board having a wiring pattern (not shown) on an epoxy base material, and which drive and control the instrument body 2 of the first light emitting display 1 The various circuit components (not shown) are electrically connected to a wiring pattern (not shown), and a female for supplying power to the first light emitting display 1 and the first and second light sources 14 and 23. A connector 5 made of a mold is mounted on the circuit board 4.

  The case body 6 assembles and holds the components of the indicating instrument such as the first and second light emitting displays 1 and 2, the first and second light sources 14 and 23, the half mirror 3 and the circuit board 4. It will be. In this case, the case body 6 is made of a synthetic resin material, and includes an intermediate case 61 that is a main component, an upper case 62 that is positioned on the front surface side, and a lower case 63 that is disposed behind the intermediate case 61. The transparent panel 64 covers the opening of the upper case 62.

  In this case, the first light emitting display 1 including the meter body 11, the first light source 14 and the second light source 23 are mounted on the circuit board 4, and the circuit board 4 is used as the main part of the case body 6. It is attached and fixed to the middle case 61. The light guide 21 and the decorative plate 22 constituting the main part of the second light emitting display 2 are assembled and fixed to the upper case 62 disposed on the front side of the middle case 61. The half mirror 3 is assembled and fixed between 62 and 62. Further, behind the middle case 61, a lower case 63 that covers the circuit board 4 assembled and fixed to the middle case 61 is disposed.

  The half mirror 3 is composed of a transflective panel member in which a reflective film made of an aluminum thin film (not shown) is deposited on the front surface (observer side) of a translucent substrate colored in a dark color, for example. ing.

  The half mirror 3 covers the display surface (front surface) of the first light-emitting display 1 when viewed from the observer's line of sight, and the reflective film formed on the front surface faces the second light-emitting display 2. As shown, the light emitting displays 1 and 2 are disposed between the light emitting displays 1 and 2. The inclination angle of the half mirror 3 with respect to the line-of-sight direction is set to 45 degrees, for example. In this case, the second light emitting display 2 is disposed in front of the half mirror 3 (on the viewer side) and is not directly visible to the viewer.

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Behind the case body 6, a female connector 5 disposed in the opening 63 a of the lower case 63 and a male connector 51 for supplying electric power to the outside are disposed, and the circuit board 4. The connector 5 and the male connector 51 for supplying power are connected and fixed.

  In the display device applied to the vehicle instrument device in the first embodiment configured as described above, the first light-emitting display image 16 formed by the first light-emitting display device 1 is passed through the half mirror 3. The light is transmitted to the observer side, and from the observer, the indication part 12a of the pointer 12 is emitted and displayed as a real image display, and the indicator part 15 of the display board 13 is transmitted and displayed. In this case, by forming the half mirror 3 in a dark color, only the first light-emitting display image 16 emerges and is visually recognized. On the other hand, the second light-emitting display image 24 formed by the second light-emitting display 2 is reflected to the viewer side on the front surface of the half mirror 3, and is visually recognized by the viewer as a virtual image display. Then, the second light emitting display image 23 is displayed as a virtual image display so that the upper dark color of the display plate 13 becomes brighter as it goes downward according to the transmission density of the pattern 221 provided on the decorative plate 22. Is done. As a result, as shown in FIG. 2, the first light-emitting display image 16 based on the real image display and the second light-emitting display image 24 based on the virtual image display are combined and displayed through the half mirror 3.

  Therefore, the second light-emitting display image 24 is reflected by the half mirror 3 and is visually recognized as a virtual image display by the observer with respect to the first light-emitting display image 16, so that it is visually recognized at a deep position. Thereby, the floating visual effect can be given with respect to the 2nd display image 24 used as the background by the index parts 15, such as a scale and a character which is one of the 1st display images 16. FIG.

  At this time, in the second light source 23 for illuminating and displaying the second light emitting display 2, for example, a blue light emitting diode and a white light emitting diode are turned on, so that the decorative plate is interposed via the light guide plate 21. The background is illuminated and displayed in blue in accordance with the form of the pattern 221 applied to 22. Further, by lighting the red light emitting diode and the white light emitting diode, the illumination color can be arbitrarily switched, and the intensity of the illumination color can be arbitrarily or automatically adjusted. That is, with regard to the light and shade of the illumination color, for example, when a blue light emitting diode and a white light emitting diode are turned on, the current value applied to each light emitting diode is changed to change the shade of light blue to dark blue (Shading) can be adjusted. Similarly, the illumination luminance as the background can be brightly and darkly illuminated by arbitrarily setting the value of the current flowing through the light emitting diode, and the virtual image display image 24 as the background is compared with the illumination display by the real image display image 16. The brightness can be adjusted according to the preference of the observer, the appearance can be improved in addition to the three-dimensional display, and the decoration effect can be enhanced.

  Further, when the display device is assembled, the first light source 14 for illuminating the first light emitting display 1 and the second light source for illuminating the second light emitting display 2 on the circuit board 4 made of a single substrate. 23 and the first light-emitting display 1 can be mounted to increase the mounting density of the circuit board 4 and to reduce the number of components for routing wiring. Moreover, each component can be sequentially assembled and fixed with the circuit board 4 as a reference, so that the assembling work can be easily performed. That is, the case body 6 includes a middle case 61 that holds the circuit board 4, an upper case 62 that holds the second light emitting display 2, and a lower case 63 that covers the back of the circuit board 4. The middle case 61 is assembled with the circuit board 4 as a reference, and the upper case 62 holding the second light emitting display 2 and the lower case 63 for protecting the circuit board 4 are sequentially arranged. Since it can be assembled and held, the assembling work can be easily performed.

  At this time, the second light source for illuminating and displaying the second light-emitting display 2 is mounted on the circuit board 4 on which the first light-emitting display 1 and the first light source 14 are mounted, thereby providing electrical routing. The electrical routing to the outside through the connector 5 can be satisfactorily performed, and as a result, the assembly work is simplified and the assembly work is more efficient than before. Can be done well.

  In the first embodiment described above, the light guide 21 and the decorative plate 22 of the second light emitting display 2 are formed in a flat plate shape. For example, the decorative plate 22 facing the half mirror 3 is used. The three-dimensional shape of the decorative plate 22 can be visually recognized through the half mirror 3 at the time of illumination display by the light source 23 by forming the surface of the three-dimensionally with a mortar-shaped inclined surface having a low center. A further stereoscopic effect and a sense of depth can be provided.

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Further, the first light source 14 for illuminating and displaying the first light emitting display 1 and the second light source 23 for illuminating and displaying the second light emitting display 2 are turned on with a predetermined time difference. By setting so that the lighting display timing of the first light-emitting display 1 and the second light-emitting display 2 changes, it becomes a novel appearance. The illumination display of the display device can be changed by turning off the second light source 23 for illuminating and displaying the light emitting display 2.

  Further, in the first embodiment, the analog display instrument with the pointer 12 is configured as the illumination display by the real image as the first light emitting display 1, but the display by the transmissive illumination display such as a liquid crystal, for example. May be configured as a real image display, and the second light emitting display 2 is configured as an illumination display for the background. For example, as an illumination display by a virtual image display composed of a centralized alarm display device or the like. In short, the case body 6 includes a middle case 61 that holds the circuit board 4, an upper case 62 that holds the second light emitting display 2, and a lower case that covers the back of the circuit board 4. The main part of the case body 6 is constituted by the case 63, the middle case 61 is assembled with the circuit board 4 as a reference, and the upper case 62 holding the second light emitting display 2 and the circuit board 4 are protected. By adopting a structure in which the lower case 63 can be assembled sequentially, the electrical routing can be simplified and the electrical routing can be satisfactorily performed to the outside via the connector 5. It ’s fine.

  Further, in the above-described embodiments, the display device in an indicator instrument such as a vehicular instrument or a motorcycle has been described as an example of application thereof. However, the display instrument is not limited to the indicator instrument for a vehicle. It can also be applied to indicator instruments for special vehicles such as construction machines.

DESCRIPTION OF SYMBOLS 1 1st light emission display 2 2nd light emission display 3 Half mirror 4 Circuit board 5,51 Connector 6 Case body 11 Instrument main body 11a Pointer axis | shaft 12 Pointer 12a Instruction part 12b Pointer cap 13 Display board 14 Light source (1st light source)
DESCRIPTION OF SYMBOLS 15 Indicator part 16 1st light emission display image 21 Light guide 22 Decoration board 23 Light source (2nd light source)
24 Second light emitting display image 61 Middle case 62 Upper case 63 Lower case 64 Perspective panel 211 Light receiving portion 212 Reflecting surface 221 Pattern

Claims (6)

  A first light-emitting display that displays a real image by illumination light from the first light source, a half mirror disposed on the front side of the first light-emitting display, and a first mirror disposed on the side of the front side of the half mirror. A second light-emitting display that displays a virtual image by reflecting the illumination light from the two light sources through the half mirror, the first and second displays, the first and second light sources, and the half mirror; And a circuit board that is held by the case body and mounts the first light source, the second light source, and the first light emitting display. A display device comprising: a connector provided to be electrically routed to the outside through the circuit board.   The display device according to claim 1, wherein the case body includes an intermediate case that holds the circuit board, an upper case that holds the second light emitting display, and a lower case that covers the back of the circuit board. .   3. The display device according to claim 1, wherein the virtual image display of the second light emitting display is displayed by illumination as a background of the real image display of the first display. 4.   The display device according to claim 1, wherein the second light source is provided so that an illumination color can be arbitrarily adjusted.   The display device according to any one of claims 1 to 3, wherein the second light source is provided so that illumination luminance can be arbitrarily adjusted.   The display device according to claim 1, wherein the first light source and the second light source are turned on with a predetermined time difference.

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