JP6658202B2 - Display device - Google Patents

Description

  The present invention relates to a display device.

BACKGROUND ART Conventionally, as described in Patent Literature 1, for example, a display device including a main indicator which is a pointer-type instrument indicating a vehicle speed and the like, and an indicator indicator which illuminates an information symbol indicating a blinker or the like is known. ing. The indicator display includes a light source, a substrate through which light is transmitted only at locations corresponding to the indicator symbols, and a tubular portion that is a partition for guiding light from the light source to the substrate.
Also, as described in Patent Document 2, for example, a configuration is known in which a digital display such as a liquid crystal display is provided as a main display instead of a pointer-type instrument.

JP-A-11-059228 JP-A-2006-006462

  In the configuration of Patent Document 1, it has been studied to provide an indicator display at a position close to the main display in order to reduce the size of the display device. For example, when the cylindrical portion is formed separately from the case accommodating the main display, when assembling the display device, the cylindrical portion does not come into contact with the main display or the case so that the assembly is not difficult. It is necessary to secure a sufficient clearance between the device and the main display or the case. For this reason, it was difficult to reduce the size of the display device.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a display device that is reduced in size.

In order to achieve the above object, a display device according to the present invention includes:
A display device comprising: a main display unit for displaying main information; and a sub-display unit for displaying sub-information located on an outer periphery of the main display unit as viewed from a viewer,
A light source that emits light,
A substrate on which the light source is mounted,
A first case located between the main display unit and the substrate;
A second case surrounding at least the outer periphery of the first case as viewed from the thickness direction of the substrate,
The first case is provided with a first light blocking portion on a surface facing the second case,
The second case is provided with a second light blocking portion on a surface facing the first case,
The first and second light-shielding portions are combined with each other to form a cylindrical portion that guides light from the light source to the sub-display portion.
It is characterized by the following.

  According to the present invention, downsizing of the display device can be realized.

It is a front view of the display concerning one embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. FIG. 1 is a perspective view of a display device with an upper cover removed according to an embodiment of the present invention. It is a perspective view of a middle case concerning one embodiment of the present invention. It is a perspective view of the upper case concerning one Embodiment of this invention. It is a figure showing a course of light between cylinder parts concerning one embodiment of the present invention. It is a perspective view of the upper case concerning one Embodiment of this invention.

  An embodiment of a display device according to the present invention will be described with reference to the drawings. The display device according to the present embodiment is mounted on a vehicle.

As shown in FIG. 1, the display device 10 includes a digital display unit 11 which is located substantially at the center when viewed from the front and digitally displays vehicle information such as vehicle speed, a vehicle direction instruction, a headlight high beam, and a parking position. , An ABS (Antilock Brake System) or the like, and a plurality of (three in this example) indicator displays 12a to 12c.
In this example, the three indicator display units 12a to 12c are arranged above the digital display unit 11 so as to be arranged in the left-right direction when viewed from the viewer.
Note that the digital display unit 11 is an example of a main display unit, and the indicator display units 12a to 12c are examples of a sub display unit.

  As shown in FIG. 2, the display device 10 includes a middle case 20 as an example of a first case, an upper case 30 as an example of a second case, a lower case 40, a circuit board 50, and a liquid crystal display. 51, and a plurality of light sources 52a and 52b.

  The lower case 40 is made of, for example, AES (Acrylonitrile-Ethylene-Styrene) resin, and is formed in a box shape that opens toward the front side (viewer side). A circuit board 50 is housed in the lower case 40. A plurality of light sources 52a and 52b are mounted on the surface of the circuit board 50. Each of the light sources 52a and 52b is composed of, for example, an LED (Light Emitting Diode). The plurality of light sources 52a illuminate the digital display unit 11 (the liquid crystal display 51), and the plurality of light sources 52b illuminate the indicator display units 12a to 12c.

  The middle case 20 is integrally formed of a resin material made of, for example, polypropylene. The middle case 20 is located on the surface of the circuit board 50. The plurality of light sources 52a are located in the inner space of the middle case 20, and the plurality of light sources 52b are located in the outer space of the middle case 20.

As shown in FIG. 4, the middle case 20 includes a box-shaped main body 21 that opens toward the front side, and a middle case light-shielding part 22 that is arranged on the outer peripheral surface of the main body 21.
The main body 21 includes an upper side wall 21a positioned above when viewed from a viewer.
The middle case light-shielding part 22 is provided on the outer surface of the upper side wall 21 a of the main body part 21. The middle case light-shielding part 22 corresponds to a first light-shielding part.

The middle case light-shielding part 22 includes a substrate part 22g and six light-shielding walls 22a to 22f standing upright from the substrate part 22g.
The substrate portion 22g has a rectangular plate shape extending along the longitudinal direction of the upper side wall 21a.
Each of the light shielding walls 22a to 22f is formed in a rectangular plate shape extending along the short direction of the upper side wall 21a so as to be orthogonal to the substrate portion 22g. The light shielding walls 22a and 22f are located at both ends in the longitudinal direction of the substrate 22g. The light shielding walls 22b to 22e are arranged between the light shielding walls 22a and 22f. The light shielding walls 22b to 22e are arranged in the direction from the light shielding wall 22a to the light shielding wall 22f in the order of the light shielding wall 22b, the light shielding wall 22c, the light shielding wall 22d, and the light shielding wall 22e. The light shielding walls 22b and 22c face each other at a position close to each other. The light shielding walls 22d and 22e face each other at a position close to each other.
The board portion 22g includes a first plate portion 22g1 between the light shielding walls 22a and 22b, a second plate portion 22g2 between the light shielding walls 22b and 22c, a third plate portion 22g3 between the light shielding walls 22c and 22d, A fourth plate portion 22g4 between the light shielding walls 22d and 22e and a fifth plate portion 22g5 between the light shielding walls 22e and 22f are provided. The first, third, and fifth plate portions 22g1, 22g3, 22g5 have substantially the same area as each other, and have a larger area than the second and fourth plate portions 22g2, 22g4.
The light shielding walls 22b and 22c and the light shielding walls 22d and 22e each correspond to a pair of first light shielding walls.

  As shown in FIG. 2, the liquid crystal display 51 receives light from the light source 52a and displays an image related to vehicle information under the control of a control unit such as a microcomputer (not shown) mounted on the circuit board 50, for example. I do. As shown in FIG. 3, the liquid crystal display 51 is formed in a rectangular plate shape, and is set on the surface of the middle case 20. The liquid crystal display 51 includes a plurality of connection pins 51a arranged along the longitudinal direction. Each connection pin 51a is formed in a substantially U-shape at a side portion in the longitudinal direction of the liquid crystal display 51 so as to grip the liquid crystal display 51 in its thickness direction. The liquid crystal display 51 is connected to a control unit (not shown), a power supply, and the like via a plurality of connection pins 51a. The liquid crystal display 51 inputs and outputs a signal or power supply current through a plurality of connection pins 51a. In a state where the liquid crystal display 51 is installed in the middle case 20, the plurality of connection pins 51a are arranged in a region facing the middle case light-shielding portion 22. The liquid crystal display 51, the middle case 20, and the circuit board 50 are integrated via a fixing member 15, as shown in FIG.

As shown in FIG. 5, the upper case 30 is formed of, for example, an AES resin, and is formed in a box shape that opens toward the lower case 40. The upper case 30 is fixed via screws (not shown) to the lower case 40 in a state in which the middle case 20 and the circuit board 50 are housed.
As shown in FIG. 2, the ceiling plate 30a of the upper case 30 has a first opening 31 closed by a transparent plate 33, a plurality of second openings 32 closed by an indicator display plate 34, Are formed.
The transparent plate 33 is formed of a synthetic resin such as acrylic into a rectangular plate shape, and is located facing the surface of the liquid crystal display 51. Further, the indicator display plate 34 is formed at a position and a shape corresponding to the indicator display portions 12a to 12c. The transparent plate 33 and the indicator display plate 34 are, for example, insert-molded in the upper case 30.

  The indicator display plate 34 is formed by laminating a transmission plate made of a synthetic resin such as acrylic, and an ink layer made of a light-shielding paint such as black formed on the back surface of the transmission plate. This ink layer is not formed only with the symbol portions corresponding to the indicator display portions 12a to 12c. That is, the indicator display plate 34 transmits light from the light source 52b only in this symbol portion.

  The upper case 30 includes an upper case light-shielding portion 36 that is combined with the middle case light-shielding portion 22, as shown in FIG. The upper case light-shielding portion 36 includes an upper side wall 30d of the upper case 30 and two light-shielding walls 35a and 35b formed on the inner surface of the upper side wall 30d. Each light shielding wall 35a, 35b is formed between a plurality of adjacent second openings 32. Note that the upper case light-shielding part 36 corresponds to a second light-shielding part. The light shielding walls 35a and 35b correspond to second light shielding walls.

By combining the upper case 30 with the middle case 20, the upper case light-shielding portion 36 is combined with the middle case light-shielding portion 22, and the first to third cylindrical portions 61 to 63 are formed.
Light sources 52b are arranged in the internal spaces of the first to third cylindrical portions 61 to 63, respectively. As shown in FIG. 2, the first to third cylindrical portions 61 to 63 are formed so as to guide the light from the light source 52b to the indicator display plates 34 of the corresponding indicator display portions 12a to 12c.
Specifically, as shown in FIG. 6, when the upper case 30 is combined with the middle case 20, the light-shielding wall 35a of the upper case 30 is located between the light-shielding walls 22b and 22c of the middle case 20, and It approaches or contacts the second plate portion 22g2 between the light shielding walls 22b and 22c. Similarly, the light-shielding wall 35b of the upper case 30 is located between the light-shielding walls 22d and 22e of the middle case 20, and approaches or contacts the fourth plate portion 22g4 between the light-shielding walls 22d and 22e. Thereby, for example, as shown by a dashed arrow A1 in FIG. 6, the path of the light leaking from the cylindrical portion 61 to the cylindrical portion 62 can be meandered. Therefore, light hardly leaks from the tube portion 61 to the tube portion 62. Since the same structure is realized between all the cylinders 61 to 63, light hardly leaks between all the cylinders 61 to 63.

(effect)
According to the embodiment described above, the following effects can be obtained.

(1) The display device 10 according to the present embodiment includes a digital display unit 11 that displays information such as a vehicle speed, and indicator display units 12a to 12 that display indicator information that is located on the outer periphery of the digital display unit 11 as viewed by a viewer. 12c. The display device 10 includes a light source 52b that emits light, a substrate 50 on which the light source 52b is mounted, a middle case 20 positioned between the digital display unit 11 and the substrate 50, and a display device viewed from the thickness direction of the substrate 50. And an upper case 30 surrounding at least the outer periphery of the middle case 20. The middle case 20 is provided with a middle case light blocking portion 22 on a surface facing the upper case 30. The upper case 30 is provided with an upper case light-shielding portion 36 on a surface facing the middle case 20. The light shielding portions 22 and 36 are combined with each other to form cylindrical portions 61 to 63 that guide light from the light source 52b to the indicator display portions 12a to 12c.
According to the above-described embodiment, the cylindrical portions 61 to 63 are configured to be splittable into the middle case light-shielding portion 22 and the upper case light-shielding portion 36. Therefore, even when the middle case light-shielding portion 22 is provided at a position close to the digital display portion 11 (the liquid crystal display 51), when assembling the display device 10, the cylindrical portions 61 to 63 are connected to the liquid crystal display 51 or the middle case 20. Is prevented from coming into contact with.
For example, when assembling the display device 10, the second plate portion 22g2 and the fourth plate portion 22g4 of the middle case light-shielding portion 22 prevent the light-shielding walls 35a and 35b from abutting on the connection pins 51a.
Therefore, the clearance between the cylindrical portions 61 to 63 and the liquid crystal display 51 can be small, and the size of the display device 10 can be reduced.

(2) The middle case light-shielding portion 22 in the display device 10 according to the present embodiment includes a pair of light-shielding walls 22b and 22c or a pair of light-shielding walls 22d and 22e extending along the boundary between the adjacent tubular portions 61 to 63. The upper case light-shielding portion 36 includes a light-shielding wall 35a or 35b extending along the boundary and located between the pair of light-shielding walls 22b and 22c or the pair of light-shielding walls 22d and 22e.
According to the above embodiment, it is possible to suppress light from leaking between the adjacent cylindrical portions 61 to 63.

(3) The display device 10 according to the present embodiment includes a liquid crystal display 51 for displaying an image on the digital display unit 11, and the liquid crystal display 51 includes connection pins 51a for inputting and outputting a current to and from the digital display unit 11. The case light-shielding portion 22 is provided over a region facing the connection pin 51a.
According to the above-described embodiment, when assembling the display device 10, contact of the tubular portions 61 to 63 with the connection pins 51 a of the liquid crystal display 51 is suppressed.

(Modification)
Note that the above embodiment can be implemented in the following form in which this is appropriately changed.

  In the above embodiment, the light shielding walls 35a and 35b are formed in the upper case 30, but the light shielding walls 35a and 35b may be formed in the lower case 40 as the second case instead of the upper case 30. . In this case, the lower case 40 is formed so as to surround the outer periphery of the middle case 20.

  In the above embodiment, the display device 10 includes the liquid crystal display 51 as the main display unit, but may include a pointer-type instrument as the main display unit instead of the liquid crystal display 51.

  In the above embodiment, the display device 10 includes the three indicator displays 12a to 12c, but the positions, numbers, shapes, and types of the indicator displays 12a to 12c are not limited thereto, and may be changed as appropriate.

  In the above-described embodiment, for example, two light-shielding walls 22b and 22c as first light-shielding walls are provided in the middle case 20 between the adjacent cylindrical portions 61 and 62, and the second case is provided in the upper case 30. Although one light-shielding wall 35a is provided as a light-shielding wall, the number of the first and second light-shielding walls is not limited to this. For example, a pair of light shielding walls may be provided in the upper case 30, and one light shielding wall located between the pair of light shielding walls may be provided in the middle case 20. Further, the first and second light-shielding walls may be provided two by two or one by one.

  DESCRIPTION OF SYMBOLS 10 ... Display apparatus, 11 ... Digital display part, 12a, 12b, 12c ... Indicator display part, 15 ... Fixed member, 20 ... Middle case, 21 ... Main body part, 21a ... Upper side wall, 22 ... Middle case light-shielding part, 22a, 22b, 22c, 22d, 22e, 22f: light shielding wall, 22g: substrate, 22g1, first plate, 22g2, second plate, 22g3, third plate, 22g4: fourth plate, 22g5, fifth Plate part, 30 ... upper case, 30a ... ceiling plate, 30d ... upper side wall, 31 ... first opening, 32 ... second opening, 33 ... transparent plate, 34 ... indicator display plate, 35a, 35b ... light shielding Wall 36, upper case light-shielding part, 40 ... lower case, 50 ... circuit board, 51 ... liquid crystal display, 51a ... connection pins, 52a, 52b ... light source, 61 ... first cylinder, 62 ... second cylinder , 63 ... third tubular part

Claims (3)

A display device comprising: a main display unit for displaying main information; and a sub-display unit for displaying sub-information located on an outer periphery of the main display unit as viewed from a viewer,
A light source that emits light,
A substrate on which the light source is mounted,
A first case located between the main display unit and the substrate;
A second case surrounding at least the outer periphery of the first case as viewed from the thickness direction of the substrate,
The first case is provided with a first light blocking portion on a surface facing the second case,
The second case is provided with a second light blocking portion on a surface facing the first case,
The first and second light-shielding portions are combined with each other to form a cylindrical portion that guides light from the light source to the sub-display portion.
A display device characterized by the above-mentioned. One of the first and second light-shielding portions includes a pair of first light-shielding walls extending along a boundary portion between the adjacent cylindrical portions,
One of the other of the first and second light-shielding portions includes a second light-shielding wall extending along the boundary portion and located between the pair of first light-shielding walls.
The display device according to claim 1, wherein: The main display unit includes a connection pin for inputting and outputting current to the main display unit,
The first light-shielding portion is provided over a region corresponding to the connection pin,
The display device according to claim 1, wherein:

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