JP2017181158A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact display device.SOLUTION: A display device includes a main display portion to display main information, and a sub-display portion to display sub-information that is positioned at an outer periphery of the main display portion when viewed by a viewer. The display device includes a light source 52b that emits light, a circuit board on which the light source 52b is mounted, a first case positioned between the main display portion and the circuit board, and a second case surrounding at least an outer periphery of the first case when viewed from a thickness direction of the circuit board. The first case has a first light-blocking portion on a surface opposite to the second case. The second case has a second light-blocking portion on a surface opposite to the first case. The first and second light-blocking portions are combined with each other to form a cylinder that guides light from the light source 52b to the sub-display portion.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a display device.

2. Description of the Related Art Conventionally, as described in, for example, Patent Document 1, a display device including a main display that is a pointer-type instrument that indicates a vehicle speed and the like, and an indicator display that lights a notification symbol that indicates a blinker or the like is known. ing. The indicator display includes a light source, a substrate through which light is transmitted only at a location corresponding to the indicator symbol, and a cylindrical portion that is a partition that guides light from the light source to the substrate.
For example, as described in Patent Document 2, a configuration in which a digital display such as a liquid crystal display is provided as a main display instead of a pointer-type instrument is also known.

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

  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 cylinder part is configured separately from the case that accommodates the main display, when assembling the display device, the cylinder part should not be difficult to be assembled by contacting the main display or the case. It is necessary to ensure a sufficient clearance between the main display and the case. For this reason, it has been difficult to reduce the size of the display device.

  The present invention has been made in view of the above-described actual situation, and an object thereof is to provide a display device that is downsized.

In order to achieve the above object, a display device according to the present invention includes:
A display device comprising: a main display unit that displays main information; and a sub display unit that displays 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 when viewed from the thickness direction of the substrate,
The first case is provided with a first light-shielding portion on a surface facing the second case,
The second case is provided with a second light-shielding 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 that.

  According to the present invention, it is possible to reduce the size of a display device.

It is a front view of the display apparatus which concerns on one Embodiment of this invention. It is the sectional view on the AA line of FIG. It is a perspective view of a display device from which an upper cover concerning one embodiment of the present invention was removed. It is a perspective view of the middle case concerning one embodiment of the present invention. It is a perspective view of the upper case concerning one embodiment of the present invention. It is a figure which shows the course of the light between the cylinder parts which concern on one Embodiment of this invention. It is a perspective view of the upper case concerning one embodiment of the present 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 this embodiment is mounted on a vehicle.

As shown in FIG. 1, the display device 10 includes a digital display unit 11 that digitally displays vehicle information such as a vehicle speed, which is positioned approximately in the center when viewed from the front, a vehicle direction indication, a headlight high beam, a parking position. And a plurality of (three in this example) indicator display sections 12a to 12c for displaying the state of the vehicle such as ABS (Antilock Brake System).
In this example, the three indicator display parts 12a-12c are arrange | positioned above the digital display part 11 so that it may be located in a line with the left-right direction seeing from a viewer.
The digital display unit 11 is an example of a main display unit, and the indicator display units 12a to 12c are examples of sub display units.

  As shown in FIG. 2, the display device 10 includes a middle case 20 that is an example of a first case, an upper case 30 that is 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 opened toward the front side (viewer side). A circuit board 50 is accommodated in the lower case 40. A plurality of light sources 52 a and 52 b are mounted on the surface of the circuit board 50. Each light source 52a, 52b is comprised, for example from LED (Light Emitting Diode). The plurality of light sources 52a illuminate the digital display unit 11 (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 polypropylene, for example. The middle case 20 is located on the surface of the circuit board 50. The plurality of light sources 52 a are located in the inner space of the middle case 20, and the plurality of light sources 52 b 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 portion 21 that opens toward the front side, and a middle case light-shielding portion 22 that is disposed on the outer peripheral surface of the main body portion 21.
The main body 21 includes an upper side wall 21a positioned on the upper side when viewed from the viewer.
The middle case light shielding portion 22 is provided on the outer surface of the upper side wall 21 a of the main body portion 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 erected from the board part 22g.
The substrate portion 22g has a rectangular plate shape extending along the longitudinal direction of the upper side wall 21a.
Each light shielding wall 22a-22f is formed in the rectangular plate shape extended along the transversal direction of the upper side wall 21a so as to be orthogonal to the board | substrate part 22g. The light shielding walls 22a and 22f are located at both ends in the longitudinal direction of the substrate portion 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 order of the light shielding wall 22b, the light shielding wall 22c, the light shielding wall 22d, and the light shielding wall 22e in the direction from the light shielding wall 22a to the light shielding wall 22f. The light shielding walls 22b and 22c face each other at positions close to each other. The light shielding walls 22d and 22e face each other at positions close to each other.
The substrate 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, and 22g5 have substantially the same area as each other, and have a larger area than the second and fourth plate portions 22g2 and 22g4.
The light shielding walls 22b and 22c and the light shielding walls 22d and 22e correspond to a pair of first light shielding walls, respectively.

  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. To do. As shown in FIG. 3, the liquid crystal display 51 is formed in a rectangular plate shape and is installed 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 51 a is formed in a substantially U shape so as to hold the liquid crystal display 51 in the thickness direction on the side in the longitudinal direction of the liquid crystal display 51. The liquid crystal display 51 is connected to a control unit, a power source and the like (not shown) through a plurality of connection pins 51a. The liquid crystal display 51 inputs and outputs current for signals or power 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 51 a are arranged in a region facing the middle case light shielding portion 22. As shown in FIG. 2, 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. 5, the upper case 30 is formed of, for example, AES resin, and is formed in a box shape that opens toward the lower case 40. The upper case 30 is fixed to the lower case 40 in a state in which the middle case 20 and the circuit board 50 are accommodated via screws (not shown).
As shown in FIG. 2, the ceiling plate 30 a of the upper case 30 includes a first opening 31 that is closed by the transparent plate 33, and a plurality of second openings 32 that are closed by the indicator display plate 34, Is formed.
The transparent plate 33 is formed in a rectangular plate shape using a synthetic resin such as acrylic and is positioned to face the surface of the liquid crystal display 51. Moreover, the indicator display board 34 is formed in the position and shape corresponding to the indicator display parts 12a-12c. The transparent plate 33 and the indicator display plate 34 are insert-molded in the upper case 30, for example.

  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. Only the symbol portion corresponding to the indicator display portions 12a to 12c is not formed in the ink layer. That is, the indicator display board 34 transmits light from the light source 52b only by this symbol portion.

  As shown in FIG. 5, the upper case 30 includes an upper case light shielding portion 36 combined with the middle case light shielding portion 22. The upper case light-shielding portion 36 includes an upper side wall 30d in 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. The upper case light shielding part 36 corresponds to a second light shielding part. The light shielding walls 35a and 35b correspond to a second light shielding wall.

By combining the upper case 30 with the middle case 20, the upper case light-shielding part 36 is combined with the middle case light-shielding part 22, and the first to third cylindrical parts 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 tube portions 61 to 63 are formed so as to guide light from the light source 52 b to the indicator display plates 34 of the corresponding indicator display portions 12 a to 12 c.
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 positioned 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 is close to or abuts on the fourth plate portion 22g4 between the light shielding walls 22d and 22e. Thereby, for example, as indicated by a dashed arrow A <b> 1 in FIG. 6, the path of light leaking from the cylindrical portion 61 to the cylindrical portion 62 can be meandered. Therefore, it is difficult for light to leak from the tube portion 61 to the tube portion 62. Since the same structure is realized between all the cylinder parts 61-63, it is difficult for light to leak between all the cylinder parts 61-63.

(effect)
As mentioned above, according to one Embodiment described, there exist the following effects.

(1) The display device 10 according to the present embodiment includes a digital display unit 11 that displays information such as vehicle speed, and indicator display units 12a to 12a that display indicator information located on the outer periphery of the digital display unit 11 when viewed from the viewer. 12c. Further, the display device 10 is viewed from the thickness direction of the substrate 50, the light source 52 b that emits light, the substrate 50 on which the light source 52 b is mounted, the middle case 20 that is positioned between the digital display unit 11 and the substrate 50. And an upper case 30 that surrounds at least the outer periphery of the middle case 20. The middle case 20 is provided with a middle case light-shielding portion 22 on the surface facing the upper case 30. The upper case 30 is provided with an upper case light-shielding portion 36 on the surface facing the middle case 20. These light shielding portions 22 and 36 are combined with each other to form cylindrical portions 61 to 63 that guide the 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 divided 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 the display device 10 is assembled, the cylindrical portions 61 to 63 are connected to the liquid crystal display 51 or the middle case 20. It is suppressed that it contacts.
For example, when the display device 10 is assembled, the second plate portion 22g2 and the fourth plate portion 22g4 of the middle case light blocking portion 22 prevent the light blocking walls 35a and 35b from coming into contact with the connection pin 51a.
Therefore, since the clearance between the cylinder portions 61 to 63 and the liquid crystal display 51 can be small, the display device 10 can be downsized.

(2) The middle case light-shielding part 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 cylindrical parts 61 to 63. The upper case light shielding portion 36 includes a light shielding wall 35a or 35b that extends along the boundary portion and is positioned between the pair of light shielding walls 22b and 22c or the pair of light shielding walls 22d and 22e.
According to the said embodiment, it can suppress that light leaks between the adjacent cylinder parts 61-63.

(3) The display device 10 according to the present embodiment includes a liquid crystal display 51 that displays an image on the digital display unit 11, and the liquid crystal display 51 includes a connection pin 51 a that causes the digital display unit 11 to input and output current. The case light-shielding portion 22 is provided over a region facing the connection pin 51a.
According to the embodiment, when the display device 10 is assembled, the cylindrical portions 61 to 63 are prevented from contacting the connection pins 51 a of the liquid crystal display 51.

(Modification)
In addition, the said embodiment can be implemented with the following forms which changed this suitably.

  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 not in the upper case 30 but in the lower case 40 as the second case. . 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. However, instead of the liquid crystal display 51, the display device 10 may include a pointer-type instrument as the main display unit.

  In the above-described embodiment, the display device 10 includes the three indicator display units 12a to 12c. However, the position, number, shape, and type of the indicator display units 12a to 12c are not limited thereto, and may be changed as appropriate.

  In the above embodiment, for example, between the adjacent cylindrical portions 61 and 62, the middle case 20 is provided with two light shielding walls 22b and 22c as first light shielding walls, and the upper case 30 has a second light shielding wall. Although one light shielding wall 35a is provided as the light shielding wall, the number of the first and second light shielding walls is not limited to this. For example, the upper case 30 may be provided with a pair of light shielding walls, and the middle case 20 may be provided with one light shielding wall positioned between the pair of light shielding walls. Moreover, you may provide the 1st and 2nd light-shielding wall 2 each, respectively.

  DESCRIPTION OF SYMBOLS 10 ... Display apparatus, 11 ... Digital display part, 12a, 12b, 12c ... Indicator display part, 15 ... Fixing 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 portion, 22g1 ... first plate portion, 22g2 ... second plate portion, 22g3 ... third plate portion, 22g4 ... fourth plate portion, 22g5 ... fifth Plate part 30 ... Upper case, 30a ... Ceiling board, 30d ... Upper side wall, 31 ... First opening part, 32 ... Second opening part, 33 ... Transparent board, 34 ... Indicator display board, 35a, 35b ... Light shielding Wall, 36 ... upper case light shielding part, 40 ... lower case, 50 ... circuit board, 51 ... liquid crystal display, 51a ... connection pin, 52a, 52b ... light source, 61 ... first cylinder part, 62 ... second cylinder part 63 ... Third cylinder

Claims (3)

A display device comprising: a main display unit that displays main information; and a sub display unit that displays 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 when viewed from the thickness direction of the substrate,
The first case is provided with a first light-shielding portion on a surface facing the second case,
The second case is provided with a second light-shielding 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 that. Either 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,
The other of the first and second light shielding portions includes a second light shielding wall that extends along the boundary portion and is positioned between the pair of first light shielding walls.
The display device according to claim 1. 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 or 2.

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