JPH0622821Y2 - Lamp house for liquid crystal display - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device lamp house, and more particularly to a liquid crystal display device lamp house suitable for mounting a liquid crystal display device having a large number of terminals.

2. Description of the Related Art Recently, liquid crystal display elements have been widely used as display devices used in electronic devices. However, the visibility is not so good only by the display by the liquid crystal display element. Therefore, by arranging a lamp on the back side of the liquid crystal display element and projecting light to the element from the back side, the visibility is improved. There are some that are designed to improve. An example thereof is shown in FIG.

In the figure, 1 is a liquid crystal display element, 2 to 4 are lamps, 5
Is a circuit board to which a lamp is attached, and 6 is a lamp house. In the lamp house 6, the liquid crystal display element 1 is attached to the front portion and the circuit board 5 is attached to the rear portion. The lamps 2 to 4 are projected on the circuit board 5,
Therefore, it is necessary to mount the liquid crystal display element 1 on the upper part thereof, and therefore the lamp house 6 is used. Also,
The liquid crystal display element 1 has a plurality of terminals 7 on both sides thereof, and these terminals 7 need to be connected to lead patterns formed on the circuit board 5. However, since the liquid crystal display element 1 and the circuit board 5 are separated (about 20 mm to 30 mm apart), the terminal 7 is extended downward and a notch 5a (or Hole is inserted and pulled out to the back side, and this part is connected to the lead pattern by soldering.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the case of the liquid crystal display device mounted as described above, it is necessary to extend the terminal 7 toward the circuit board 5 and connect it to the lead pattern formed on the circuit board 5. As described above, when the display content of the liquid crystal display element 1 becomes complicated, the number of terminals 7 increases (for example, some terminals have 40 or more terminals). In such a case, there is a problem in that the pitch between the terminals 7 becomes small, which makes it very difficult to insert the terminals 7 into the notches 5a and the holes formed in the circuit board 5.

Further, even after the soldering work is completed, the terminal 7 is not supported at all in the middle position from the liquid crystal display element 1 to the circuit board 5, and the terminal 7 is erroneously touched strongly during the work of mounting the electronic device or the like. In this case, adjacent terminals come into contact with each other, and it is necessary to return the terminals to the original state. If this is not noticed, there is a problem that malfunction may occur.

The present invention was created in view of the above points, and even a liquid crystal display device having a large number of terminals can be easily assembled, and a lamp house for liquid crystal display devices that securely supports each terminal. The purpose is to provide.

Means and Actions for Solving the Problems In order to solve the above problems, according to the present invention, a liquid crystal display device having a plurality of terminals is attached to a front part, and the above terminals are connected to a back part of the liquid crystal display device. In a lamp house for a liquid crystal display element to which a substrate on which a lamp that emits light from the back side is attached is attached, by forming a guide protrusion for guiding and supporting each terminal on a side surface portion facing the plurality of terminals, The terminal is easily assembled to the circuit board, and the terminal extending from the liquid crystal display element to the circuit board is securely supported.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings. First
FIG. 2 and FIG. 2 show a liquid crystal display unit 9 using a lamp house 8 for a liquid crystal display element (hereinafter, simply referred to as a lamp house) which is an embodiment of the present invention.

The liquid crystal display unit 9 shown in the figure includes a liquid crystal display element 10, a circuit board 11, and lamps 12 to 1 in addition to the lamp house 8.
It is composed of 4 etc.

The liquid crystal display element 10 (hereinafter, simply referred to as an element) is attached so as to be exposed on a front panel of an electronic device, for example, and can perform various displays such as time display and timer display. Therefore, a large number (for example, 36) of terminals 15 are provided on both sides of the element 10. The terminals 15 are arranged at a predetermined equal pitch and are formed so as to extend downward when the element 10 is manufactured.

The circuit board 11 has a well-known structure, and a lead pattern (not shown) for supplying a signal or a voltage to the element 10 is formed on the back side thereof. Further, a plurality of notches 16 through which the terminals 15 of the element 10 are inserted are formed on one side edge 11 a of the circuit board 11. The positions where the notches 16 are formed are configured to correspond to the arrangement pitch of the terminals 10. Further, three lamps 12 to 16 are attached to the circuit board 11. Each of the lamps 12 to 16 is also connected to a lead pattern formed on the circuit board 11, and is supplied with power to emit light. Further, each of the lamps 12 to 16 projects on the circuit board 11.

The lamp house 8 which is the main part of the present application is a resin molded product,
Frame portions 8a and 8b for mounting the element 10 are formed on the front surface portion (upper portion in the drawing), and screw holes 8c and 8d are formed on the rear surface portion (lower portion in the drawing). And
A guide protrusion 17 is formed on the side surface of the lamp house 8 at a position facing the terminal 15. The guide protrusions 17 are formed at the same pitch as the terminals 15 are formed. When the element 10 is attached to the lamp house 8, each terminal 10 is located in the pair of left and right guide protrusions 17, respectively. Is configured. Further, the cross-sectional shape of the guide protrusion 17 has a taper shape that opens outward as shown in FIG.

To assemble the liquid crystal display unit 9 having the above structure, first, the lamp house 8 is attached to the circuit board 11 using the screws 18a and 18b. Screw 18 formed on the circuit board 11
a, 18b through holes 11b, 11c and the lamp house 8
The screw holes 8c, 8d formed in the guide protrusions 17 are provided in the state where the lamp house 8 is attached to the circuit board 11.
Are configured to correspond to the respective notches 16.

Subsequently, the element 10 is inserted and mounted from above the lamp house 8. At this time, first, the terminals 10 are inserted between the guide protrusions 17 formed on the lamp house 8. Therefore, each terminal 10 is supported by the guide protrusions 17 on both sides thereof.
When the element 10 is further moved downward, each terminal 15 is moved to the guide protrusion 1
It is moving downward while being guided by 7. Terminal 1 as described above
5. Since the forming pitches of the guide protrusions 17 and the notches 16 are selected to correspond to each other, each terminal 15 is inserted into each notch 16 simply by moving the element 10 downward.
Therefore, it is not necessary to position each terminal in each notch or the like as in the conventional case, and the assembling work becomes extremely easy.

When each terminal 15 is inserted into the notch 16, the circuit board 11
The terminals 15 protruding on the back surface of the substrate and the lead patterns formed on the circuit board 11 are soldered to form the liquid crystal display unit 9 shown in FIG. Even in this completed state, since each terminal 15 is engaged with and supported by the guide protrusion 17, it is possible to reliably prevent an accident such as bending or short-circuiting between adjacent terminals, although the terminals 15 extend long. Can be prevented.

In the above-described embodiment, the guide protrusion 17 is formed at one position at the substantially central position of the lamp house 8. However, the present invention is not limited to this. For example, the guide protrusion 17 may be formed at the upper and lower positions of the side surface of the lamp house. It may be formed over the entire vertical direction.

Further, the guide protrusion 17 does not necessarily need to have a taper as shown in FIG.
It becomes easy to insert. Further, the taper direction is not limited to the shape shown in FIG. 3, and may be an inverted triangular taper having a wide upper portion and a narrow lower portion with respect to the insertion direction of the terminal 15.

As described above, according to the present invention, when mounting the element,
The plurality of terminals of the element are guided by the guide protrusions and smoothly inserted into the notches or holes formed in the circuit board.
The troublesome positioning work required in the past is no longer required, and the assembly work can be facilitated.In addition, after assembly, the terminal guides the intermediate position of the device, even though it extends long from the element to the circuit board. Since the terminals are supported by the protrusions, the terminals are not bent and the short circuit accident between adjacent terminals can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a liquid crystal display unit to which a lamp house according to an embodiment of the present invention is applied, FIG. 2 is an exploded view of the liquid crystal display unit, and FIG. 3 illustrates a taper formed on a guide protrusion. FIG. 4 is a cross-sectional view for doing so, and FIG. 4 is an exploded view for explaining an example of a conventional lamp house. 8 ... Lamp house, 9 ... Liquid crystal display unit, 10 ...
... liquid crystal display element, 11 ... circuit board, 15 ... terminal, 1
7 ... Guiding protrusion.

Claims (1)

[Scope of utility model registration request] 1. A substrate on which a liquid crystal display element having a plurality of terminals is attached to a front surface portion, the terminals are connected to a rear surface portion, and a lamp for projecting the liquid crystal display element from the rear surface side is provided. A lamp house for a liquid crystal display element, wherein a guide projection for guiding and supporting the terminals is formed on a side surface portion facing the plurality of terminals.