JPH10288772A - Liquid crystal display device fitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make possible fitting a liquid crystal display device to a printed circuit board with the number of less parts. SOLUTION: This fitting device is constituted of the printed circuit board 1 provided with an illuminant on its upper surface and formed with plural engagement holes 1a on its peripheral part, a liquid crystal holder 2 provided with a light converging part formed so as to surround the illuminant and plural engagement pawls 2b engaged with the engagement holes 1a, and capable of loading the liquid crystal display device 4 and a diffusion sheet 5 in an overlapped state on its upper part and a rubber connector 6 housed in a housing part 2f formed between the side wall of the liquid crystal holder 2 and the peripheral wall of the light converging part and formed nearly longer than an interval between the printed circuit board 1 and the liquid crystal display device 4, and since the liquid crystal display device 4 is fitted to the printed circuit board 1 without requiring a liquid crystal press-down, etc., assembling work is facilitated, and the number of parts are reduced also.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting a liquid crystal display (LCD) provided on electric equipment or the like.

[0002]

2. Description of the Related Art As shown in FIGS. 5 to 8, a mounting device for a liquid crystal display provided in a conventional electric device or the like has a liquid crystal display on a printed circuit board a via a rectangular frame-shaped light collecting spacer b. The liquid crystal display c and the condensing spacer are surrounded by a box-shaped liquid crystal holder d.

A plurality of hook-shaped locking pieces e project from the lower edge of the liquid crystal presser d, and these locking pieces e are fitted into elongated mounting holes f formed in the printed circuit board a. Insert
The liquid crystal display c is fixed to the printed circuit board a by bending the tip of the locking piece e approximately 90 °.

On the printed circuit board a, a light emitting body g for a backlight positioned substantially at the center of the light condensing spacer b is provided.
Is provided, and a diffusion sheet h is sandwiched between the upper surface of the condensing spacer b and the lower surface of the liquid crystal display c.

On the other hand, between the printed circuit board a and the liquid crystal display c, a rubber connector i for electrically connecting them is provided.
Is provided.

The rubber connector i has a conductor j embedded therein, and the conductor j is previously connected to the printed circuit board a and the liquid crystal display c so that the conductor j is securely connected to the printed circuit board a and the liquid crystal display c. The rubber connector i is designed to be large, and both sides of the rubber connector i are sandwiched between the condensing spacer b and the liquid crystal holder d so that the rubber connector i does not buckle during mounting.

[0007]

However, in the above-described conventional liquid crystal display mounting device, a box-shaped liquid crystal holder d is used for mounting the liquid crystal display c on the printed circuit board a. It takes a lot of time to assemble,
There is a problem with poor productivity.

In particular, since a metal plate cheaper than a synthetic resin is used for the liquid crystal retainer d to reduce the cost of parts, the tip of the locking piece e is folded after the locking piece f is inserted into the mounting hole f during assembly. The bending operation has to be performed by the number of the locking pieces e, so that many man-hours are required for assembling, and there is a problem that the working efficiency is very poor.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and provides a mounting device for a liquid crystal display which can be mounted on a printed circuit board without using a liquid crystal press. An object of the present invention is to reduce the number of parts and improve workability during assembly.

[0010]

According to a first aspect of the present invention, there is provided a printed circuit board having a luminous body provided on an upper surface and a plurality of locking holes formed in a peripheral portion thereof. A liquid crystal holder having a light collecting portion formed so as to surround the light emitting body and a plurality of locking claws for engaging with the locking holes, and capable of being mounted with a liquid crystal display and a diffusion sheet stacked on top thereof. And a rubber connector housed in a housing portion formed between the side wall of the liquid crystal holder and the peripheral wall of the light collecting portion, and formed slightly longer than the interval between the printed circuit board and the liquid crystal display. It is.

With the above structure, the liquid crystal display can be attached to the printed circuit board simply by inserting the locking claw of the liquid crystal holder on which the liquid crystal display and the diffusion sheet are mounted into the locking hole of the printed circuit board. The time can be greatly reduced, and the number of parts can be reduced because the liquid crystal press is not required.

In addition, since the issuing section is surrounded by the light collecting section,
Irradiation loss is small, and a condenser spacer is not required.

According to a second aspect of the present invention, a rib is formed on an upper portion of a liquid crystal holder, and a liquid crystal display and a diffusion sheet are provided between one end of the liquid crystal holder and the upper surface of the liquid crystal holder. Can be inserted.

According to the above configuration, the liquid crystal display and the diffusion sheet are sandwiched between the upper surface of the liquid crystal holder and the rib.
The liquid crystal display can be easily and reliably mounted.

In order to achieve the above object, the invention according to claim 3 is characterized in that a liquid crystal retaining claw for locking an end face of a liquid crystal display is projected from a part of a rib.

With the above configuration, there is no fear that the liquid crystal display will come off even if it is dropped by mistake.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS.

FIG. 1 is a perspective view showing a mounting device for a liquid crystal display, FIG. 2 is a sectional view thereof, and FIG. 3 is an exploded perspective view thereof.

In these figures, reference numeral 1 denotes a printed circuit board, on which a liquid crystal holder 2 is provided.

The liquid crystal holder 2 is integrally formed of a synthetic resin, and has a rectangular frame-shaped condensing portion 2a surrounding the light emitter 3 for backlight provided on the printed circuit board 1. A plurality of locking claws 2b having elasticity protrude from the edge.

The locking claws 2b can be inserted into the plurality of elongated locking holes 1a opened in the printed circuit board 1 from above, and are locked on the lower surface of the printed circuit board 1 after insertion. It has a locking step 2c.

On the upper surface side of the liquid crystal holder 2, a long rib 2d having a long length is provided on one long side portion, and a pair of short ribs 2e having a short length are provided on the other long side portion in a substantially horizontal direction. It is provided.

The liquid crystal display 4 and the diffusion sheet 5 can be inserted between the ribs 2d and 2e and the upper surface of the liquid crystal holder 2 from one end of the liquid crystal holder 2 in a state of being vertically stacked.

A connector housing 2f for housing the rubber connector 6 is formed between the inside of the long side where the long rib 2d is provided and the peripheral wall surrounding the light collector 2a.

The connector housing portion 2f is large enough to accommodate the rubber connector 6 in the shape of a rectangular parallelepiped almost completely.
The gap between the lower surface of the wiring land portion 1a of the liquid crystal display 4 mounted on the printed circuit board 1 and the upper surface of the printed circuit board 1 is slightly larger than that of the rubber connector 6 at the time of assembly.
The conductor 6a buried therein is securely connected to the contacts (both not shown) of the printed circuit board 1 and the liquid crystal display 4.

Next, the operation of assembling the above-configured liquid crystal display mounting device will be described.

First, as shown in FIG. 3, before attaching the liquid crystal holder 2 to the printed circuit board 1, the liquid crystal display 4 and the diffusion sheet 5 are vertically stacked from one end of the liquid crystal holder 2, and the upper surface of the liquid crystal holder 2 is And between the ribs 2d and 2e.

Thus, the liquid crystal display 4 and the diffusion sheet 5 are sandwiched and fixed between the upper surface of the liquid crystal holder 2 and the lower surfaces of the ribs 2d and 2e.

Next, in this state, the rubber connector 6 is inserted into the connector housing portion 2f of the liquid crystal holder 2 from below, and the upper surface of the rubber connector 6 is brought into contact with the lower surface of the wiring land portion 4a of the liquid crystal display 4. The locking claw 2b of the liquid crystal holder 2 is inserted into the plurality of locking holes 1a formed in the printed board 1 from above, and the step 2c of the locking claw 2b is shown on the lower surface of the printed board 1 in FIG. As shown.

As a result, the liquid crystal display 4 can be attached to the printed circuit board 1, and the length of the rubber connector 6 is formed to be slightly larger than the distance between the printed circuit board 1 and the wiring land portion 4a of the liquid crystal display 4 in advance. Because
The rubber connector 6 is pressurized from above and below, and the conductor 6a is securely connected to the contacts of the printed circuit board 1 and the liquid crystal display 4, and the reliability at the time of connection is greatly improved. The side wall of the liquid crystal holder 2 and the condensing part 2a
Buckling does not occur even if pressure is applied in the vertical direction.

The luminous body 3 provided on the printed circuit board 1 is surrounded by the light converging portion 2a to prevent light from leaking to the periphery. Optical spacers are not required.

FIG. 4 shows another embodiment.
Next, this will be described. In this embodiment, a liquid crystal retaining claw 2g is protruded from the rib 2e in the horizontal direction on the liquid crystal display insertion side of the liquid crystal holder 2. The liquid crystal retaining claw 2g has elasticity in the vertical direction, and has
An inclined surface 2h for facilitating insertion of the liquid crystal display 4 and a step 2i for locking an end surface of the liquid crystal display 4 are formed.

As a result, the liquid crystal display 4 and the diffusion sheet 5 are inserted into the liquid crystal holder 2 in an overlapping state,
Since the end surface of the liquid crystal display 4 is locked to the stepped portion 2i, even if the liquid crystal display 4 is accidentally dropped during use, the liquid crystal display 4 is impacted by the fall.
Can be prevented from getting out of the liquid crystal holder 2.

[0034]

According to the present invention, as described in detail above, the liquid crystal display is mounted on the printed circuit board via the liquid crystal holder having the light-collecting portion of the luminous body. A liquid crystal display can be mounted on a printed circuit board, thereby reducing the number of parts, thereby reducing costs and facilitating assembly.
Productivity also increases.

Also, since the locking claw provided on the liquid crystal holder can be attached simply by inserting it into the locking hole formed on the printed circuit board, the work such as bending the tip of each conventional locking claw becomes unnecessary. As a result, the number of steps required for assembly can be significantly reduced.

Further, by attaching the liquid crystal holder to the printed circuit board, the rubber connector is pressed from above and below, so that the rubber connector can reliably connect the printed circuit board and the liquid crystal display, thereby improving reliability. In addition, by providing a liquid crystal retaining claw on the liquid crystal holder,
Even if it is accidentally dropped during use, there is no fear that the liquid crystal display will fall out due to the impact when dropped.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an apparatus for mounting a liquid crystal display according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an apparatus for mounting a liquid crystal display according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing an apparatus for mounting a liquid crystal display according to an embodiment of the present invention.

FIG. 4 is a perspective view of a liquid crystal display mounting device according to another embodiment of the present invention.

FIG. 5 is a perspective view showing a conventional mounting device for a liquid crystal display.

FIG. 6 is a cross-sectional view showing a conventional liquid crystal display mounting device.

FIG. 7 is an exploded perspective view showing a conventional liquid crystal display mounting device.

FIG. 8 is a perspective view of the back side showing a conventional liquid crystal display mounting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed circuit board 1a Locking hole 2 Liquid crystal holder 2a Light collecting part 2b Locking claw 2d, 2e Rib 2f Storage part 3 Light emitter 4 Liquid crystal display 4a Wiring land part 5 Diffusion sheet 6 Rubber connector 6a Conductor

Claims (3)

[Claims] 1. A printed circuit board having a light emitting body provided on an upper surface thereof and a plurality of locking holes formed in a peripheral portion thereof, and a light collecting portion formed surrounding the light emitting body and the locking hole. A liquid crystal holder having a plurality of engaging claws to be engaged, and capable of being mounted in a state where a liquid crystal display and a diffusion sheet are stacked on top,
A rubber connector housed in a housing portion formed between the side wall of the liquid crystal holder and the peripheral wall of the light condensing portion, and formed slightly longer than an interval between the printed circuit board and the liquid crystal display. LCD display mounting device. 2. The liquid crystal display according to claim 1, wherein a rib is formed on an upper portion of the liquid crystal holder, and a liquid crystal display and a diffusion sheet can be inserted between the upper surface of the liquid crystal holder and the rib from one end of the liquid crystal holder. Mounting device for liquid crystal display. 3. The mounting device for a liquid crystal display according to claim 1, wherein a liquid crystal retaining claw for locking an end face of the liquid crystal display is projected from a part of the rib.