JPH0720447A - Display panel - Google Patents

Abstract

PURPOSE:To decrease the man-hours, to improve the assembly operability, and to improve the productivity by sandwiching and fixing a liquid crystal display between a spacer fixed to a front and a rear case. CONSTITUTION:The spacer 15 is formed of synthetic resin which provides insulation and fixed to the front case 11 with screws 17 together with a printed wiring board PCB 13 while the PCB 13 is sandwiched between the spacer and the internal surface of the front case 11. After the spacer 15 is fixed to the front case 11 with the screw together with the PCB 13, a cable 16 is connected to the PCB 13 and liquid crystal display LCD 14. Further, while the LCD 14 is mounted on the spacer 15, the cable 16 is led out through the insertion hole 12a of the rear case 12 and the front case 11 and rear case 12 are locked and fixed. Consequently. the LCD 14 is sandwiched between the spacer 15 and rear case 12 to complete the display panel 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display panel for a navigation system mounted on, for example, a passenger car, and more particularly, a display excellent in assembling workability for easily fixing a liquid crystal display (hereinafter referred to as LCD). Regarding the panel.

[0002]

2. Description of the Related Art A display for a navigation system mounted on a passenger car is divided into a display panel and a control unit for the purpose of downsizing.

As shown in FIG. 6, the display panel includes a front case 51 and a rear case 52, a printed wiring board (hereinafter referred to as a PCB) 53 and an LCD 54 housed in these cases 51 and 52, and this. It is composed of a PCB 53, an LCD 54, and a pair of cables 55 connecting the control unit, and a specific assembling work is performed as follows.

First, the PCB 5 is attached to the front case 51.
3 is fixed with a screw 56, and then the pair of cables 5
One end of 5 is connected to the PCB 53 and the LCD 54, respectively.

Next, after the LCD 54 is screwed from the rear surface of the rear case with a screw 57, the cable 55 is attached to the rear case 52.
It is guided to the outside through the insertion hole 52a. Finally, when the front case 51 and the rear case 52 are fixed by locking or screwing, the PCB 53
The LCD 54 is housed and fixed in the cases 51 and 52.

[0006]

By the way, in this type of display panel, the insertion hole 52a of the cable 55 is often provided in the rear surface of the LCD 54, that is, in the rear case 52. In such a case, the LCD 54 is not used. It becomes difficult to work the cable 55 while being fixed to the rear case 52.

On the contrary, after passing through the cable 55, the LCD 5
When trying to fix 4, considering workability,
It is necessary to make the length of the cable from the PCB longer than necessary. However, it is not necessary to accommodate the extra cable 55 in these cases after fixing the front case 51 and the rear case 52 to each other. Then it's not easy.

Further, as described above, in the case where the LCD 54 is fixed to the rear case 52, as a matter of course, it is necessary to screw the rear case 52 from the rear side.

Further, when the case of the LCD 54 itself is metallic, the leads protruding from the PCB 53 may come into contact with the case to cause a short circuit. Therefore, conventionally, for example, as shown in FIG. By pasting an insulating member 54b such as an insulating film on the surface, such inconvenience has been prevented.

As described above, in the conventional display panel, it is difficult to improve productivity because many steps such as the screwing step and the step of attaching the insulating member 54b are required.

Therefore, an object of the present invention is to provide a display panel which has a small number of steps and is excellent in assembling workability in order to improve the productivity.

[0012]

In order to solve the above problems, the present invention provides a front case and a rear case, a printed wiring board and a liquid crystal display housed therein, and a printed wiring board and a liquid crystal display. In a display panel including a cable electrically connecting to an external control unit, an insulating spacer integrated with the printed wiring board and the front case is provided between the printed wiring board and the liquid crystal display. ,
The liquid crystal display is sandwiched and fixed between the spacer and the rear case.

[0013]

In the display panel configured as described above, the LCD is sandwiched and fixed between the rear case and the spacer fixed to the front case together with the PCB. Therefore, fixing means such as screws for fixing the rear case and the LCD and Fixing work is unnecessary.

Further, the insulating spacer is used for LC
Since D and the PCB are electrically disconnected, the leads of the PCB will not be short-circuited.

[0015]

EXAMPLES Examples will be described below with reference to the drawings. As shown in FIG. 1, this display includes a display panel 10 and a control unit 20, and the display panel 10 and the control unit 20 are, as shown in FIG.
It is electrically connected by a cable 16.

Further, the display panel 10 has a support shaft 10a formed on the upper portions of both side surfaces thereof, and the support shaft 10a is formed in a hole 2 formed in a support piece 21 of the controller 20.
By engaging with 2, it is rotatably supported by the control unit 20. Further, as shown in FIG. 3, a drive motor and a gear (not shown) incorporated in the control unit 20 rotate within an angle range of about 110 ° from a state shown by a broken line to a use state shown by a solid line. It is like this.

As shown in FIGS. 4 and 5, the display panel 10 has various switches such as operation buttons on the front peripheral portion, and a window portion 11a in which a transparent resin plate is fitted in the central portion. And a rear case 12 having an insertion hole 12a through which the cable 16 is inserted.
And the PCB 1 housed in these cases 11, 12.
3, LCD 14 and spacer 15. The front case 11 and the rear case 12 are locked and fixed.

The spacer 15 is made of an insulating synthetic resin, and is fixed to the front case 11 together with the PCB 13 by a screw 17 while sandwiching the PCB 13 with the inner surface of the front case 11. There is. Also, the PCB1 of this spacer 15
A protrusion 15a serving as a contact surface with the PCB 13 is formed on the contact surface with 3 to avoid the protruding lead of the PCB 13.

One end of the cable 16 is electrically connected to the PCB 13 and the LCD 14, respectively, and the other end of the cable 16 reaches the control unit 20 through the insertion hole 12a of the rear case 12.

The LCD 14 is fixed by being sandwiched between the spacer 15 and the rear case 12. Inside the rear case 12, the LCD 1 is fixed.
An accommodating recess 12b for positioning 4 is formed.

The display panel 10 configured as described above is assembled as follows.

First, the spacer 15 is screwed to the front case 11 together with the PCB 13, and then the PCB 13 and L
The cable 16 is connected to the CD 14. And LCD1
4 is placed on the spacer 15, the cable 16 is guided to the outside through the insertion hole 12a of the rear case 12, and the front case 11 and the rear case 12 are locked and fixed.
The LCD 14 is sandwiched between the two and the display panel 10 as shown in FIG.

As described above, this display panel 1
With 0, the cable 16 can be passed through the insertion hole 12a in a state where it is simply placed on the spacer 15 without fixing the LCD 14, so the number of steps is small and the workability is very good. Further, since the periphery of the screen of the LCD 14 is surrounded by the spacer 15, it is possible to effectively prevent foreign matter from entering the screen.

Although this display is used in a navigation system mounted on a passenger car or the like, its use is not particularly limited.

[0025]

As described above, in the display panel of the present invention, an insulating spacer integrated with the PCB and the front case is provided between the PCB and the LCD, and the spacer is provided between the spacer and the rear case. Since the LCD is sandwiched and fixed to the LCD, it is
Since the screwing process of D is unnecessary and the LCD is not fixed at the time of assembly, it is easy to guide the cable connected to the LCD to the outside to improve workability, and the length of the cable itself needs to be longer than necessary. There is no.

Further, since the leads protruding from the PCB do not come into contact with the metal case of the LCD and short-circuit due to the presence of the spacer, there is no need to separately attach an insulating sheet to the LCD as in the conventional case. It is possible to improve the productivity of the display panel as well as the workability.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment according to the present invention.

FIG. 2 is an exploded perspective view of the above.

FIG. 3 is a side view showing a rotating state of the display panel of the above.

FIG. 4 is a cross-sectional view of the above display panel.

FIG. 5 is an exploded perspective view of the above display panel.

FIG. 6 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

 10 Display Panel 11 Front Case 11a Window 12 Rear Case 12a Insertion Hole 12b Housing Recess 13 Printed Circuit Board (PCB) 14 Liquid Crystal Display (LCD) 15 Spacer 15a Protrusion 16 Cable 17 Screw 20 Control Section

Claims (1)

[Claims] 1. A front case and a rear case, a printed wiring board and a liquid crystal display housed therein, and a cable electrically connecting the printed wiring board and the liquid crystal display to an external control unit. In the display panel, an insulating spacer integrated with the printed wiring board and the front case is provided between the printed wiring board and the liquid crystal display, and the liquid crystal display is sandwiched and fixed between the spacer and the rear case. A display panel characterized by the above.