JPH0451025A - Liquid crystal display - Google Patents

Abstract

PURPOSE:To improve the assembly operability, serviceability, etc., by fitting a reflecting plate unit detachably to the back surface of a liquid crystal panel and coupling the connector of a DA inverter with the connector of the reflecting plate unit in a disconnectable state. CONSTITUTION:In the liquid crystal display 3 used for a TV integrated type VTR, etc., the reflecting plate unit 50 formed by unitizing a light emission body, i.e. fluorescent tube 52 is fitted detachably to the back surface of the liquid crystal panel of a liquid crystal display main body 4 and the connector 61 of the DA inverter 60 is coupled with the connector of the reflecting plate unit 50 in the disconnectable state. The liquid crystal display 3 can easily be assembled or disassembled. Consequently, the assembly operability of the liquid crystal display 3 and the serviceability at the time of the replacement of the fluorescent tube 52, etc., can be improved more.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal display used in a small, portable TV integrated VTR, etc.

[Summary of the Invention] The present invention provides a liquid crystal display used in a TV integrated VTR, etc., in which a reflector unit comprising at least a light emitter and a connector integrated into a reflector plate is detachably attached to the back of the liquid crystal panel of the liquid crystal display body. By attaching the connector of the DA inverter to the connector of this reflector unit in a detachable manner, it is easy to assemble and disassemble the LCD display, and when replacing fluorescent tubes, etc., it can be easily replaced, improving serviceability. This makes it possible to further improve the

[Prior Art] For example, in a liquid crystal display used in a TV-integrated VTR, a fluorescent tube 1 reflection plate is used as a backlight of the liquid crystal panel. Then, the high-voltage output of the DA inverter is brought to a fluorescent tube socket using a harness, or the high-voltage output of the DA inverter is temporarily dropped onto the circuit board of an LCD (liquid crystal panel) unit, and a pattern is routed around the circuit board to display the fluorescent light. I used to take it to the tube socket.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional liquid crystal displays, the fluorescent tubes, DA inverters, etc. were assembled using harnesses, soldering, etc., which made wiring processing very difficult and difficult to assemble the liquid crystal display. was complicated. Further, when replacing fluorescent tubes, etc., the reflector plate of the circuit board 1 and the like must be disassembled before being replaced, resulting in poor serviceability.

Therefore, the present invention provides a liquid crystal display that can improve assembly workability, serviceability, and the like.

[Means for Solving the Problems] A reflector unit, which includes at least a light emitting body and a connector as a unit, is detachably attached to the back of the liquid crystal panel of the liquid crystal display body, and a DA inverter is connected to the connector of this reflector unit. The connectors are removably connected.

[Effectiveness] A reflector unit containing a light emitter is detachably attached to the back of the liquid crystal panel of the liquid crystal display main body, and the connector of the DA inverter is detachably connected to the connector of this reflector unit. Easy to assemble and disassemble. This further improves the workability of assembling the liquid crystal display and the serviceability when replacing fluorescent tubes and the like.

[Example] Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 8, reference numeral 1 denotes a cylindrical TV-integrated VTR having a liquid crystal display 3 on the upper front part. This TV integrated V
The upper rear part of the VTR main body 2 of the TR1 is a VTR deck part 2a that records and plays back using a 3mm tape cassette (not shown), and the above-mentioned liquid crystal display is installed in the thin wall part 2b of the upper front part of the VTR main body 2. The cylindrical liquid crystal display main body 4 of No. 3 is tilted upward about 55 mm from a horizontal state via a hinge 5 disposed in the upper center of the VTR main body 2.
``It is supported so that it can stand up and tilt freely so that it can rotate and stand up.

As shown in FIG. 2, in the center of the top surface of the VTR body 2, there is a channel button (+) for selecting a TV program displayed on the liquid crystal display 3.

-) 10. Record button 11 for recording TV programs
．． - Time stop button 121 Rewind button 13° Fast forward button 14. Play button 15. A stop button 16 and the like are also provided. Additionally, above the channel button 10 is a timer recording lamp 17a, and above the stop button 16 is a timer recording lamp 17a.
A power lamp 17d and the like are provided above each of the lamps.

Further, on the right side of the VTR body 2, as shown in FIG. 3, a video/audio terminal 18 is provided, which is used to connect a video camera, a television set with a video/audio input terminal, or a monitor (none of which are shown). ．． A camera connector 19 is provided for connecting a video camera and recording outdoor photography. A power switch 20, which also serves as a camera line changeover switch to be described later, is disposed above the camera connector 19. Furthermore, as shown in FIG. 4, an eject button 30 for ejecting the tape cassette is provided on the left side of the VTR main body 2 at a position facing the power switch 20.
An external antenna terminal 31 is provided below the liquid crystal display 3. Further, on the front of the VTR main body 2, a fifth
As shown in the figure, a pair of hand strap fittings 32,
32° rod antenna 33. DC power output terminal 34. A battery eject button 36 is provided on the front side of the bottom for removing a battery 35 which is detachably attached.

The power switch 20, as shown in Fig. 3.12,
The recess 2C of the VTR main body 2 has a small hole 21a in the center.
It has a slider 21 that slides in the front-rear direction, and a lock button part (tip part) 22a that is inserted into the small hole 21a of this slider 21 and the elongated hole 2d of the recess 2C, respectively.
A pair of grooves 22b, 22b that move on the inner surface of c and engage and separate from a pair of protrusions 2e, 2e integrally protruding from the inner surface.
A lock plate 22 having a
20 passes through the base portion 22c that integrally projects in a cylindrical shape, and is held by a pair of claw portions 21b, 21b integrally formed on the slider 21, and is biased by the biasing force of the compression coil spring 23 to the slider 21 and the lock plate 22.
and a biasing plate 24 that constantly biases both of them forward (to the camera line switching side), and a biasing plate 24 that is interposed between the base 22c of the lock plate 22 and the biasing plate 24 and constantly biases the lock plate 22 upward. It is generally composed of a compression coil spring 25.

As shown in FIGS. 11 and 12, this power switch 20 is normally located at the center position where the slider 21 is locked by the lock plate 22, and unless the lock button 22a of the lock plate 22 is pressed, the power switch 20 cannot be inadvertently turned on. The switch 20 does not move. From this state, when turning on/off the power of the VTR body 2, the slider 21 is slid in the direction of the arrow, as shown in FIG. 13. In this case, when the user releases the slider 21, the slider 21 returns to its original center position as indicated by the arrow in FIG. 13 due to the biasing force of the compression coil spring 23.

In addition, when a video camera is connected to the camera connector 19 of the VTR body 2 and used, the power is turned on with the power switch 20, as in a normal camera-integrated VTR, and then the As in, power switch 20
By sliding the slider 21 in the direction opposite to the power on/off position direction, the camera can be directly operated (the power can also be turned on/off from the video camera side). In this case, the slider 21 is moved to the 15th and 16th position by the biasing force of the compression coil spring 23.
It is held (locked) in the state shown in the figure. Conventionally, when using a video camera, the power was turned on using the power switch, and then the camera/TV line selection switch, which was provided separately from the power switch, was switched to the camera side. In addition to turning the power on and off, the 20 also has the function of switching to the camera line, which simplifies operations when connecting a video camera and reduces the number of switches as much as possible. It looks like this.

A transparent plate 40 made of synthetic resin or the like is fixed to a rectangular opening 4b formed on the upper surface 4a of the liquid crystal display main body 4. A color liquid crystal panel 41 is arranged below this transparent plate 40.

Further, as shown in FIG. 9, a large circuit board 4 is attached to the bottom surface 4C side of the liquid crystal display main body 4 through a predetermined means.
2 is fixed. A reflector unit 50 is freely inserted between the color liquid crystal panel 41 and the circuit board 42 through an opening 4d formed on the left side of the liquid crystal display main body 4. The reflector unit 50 includes a substantially rectangular reflector 51 made of synthetic resin, a U-shaped fluorescent tube (luminous body) 52 fixed at the center of the reflector 51, and one end of both ends of the fluorescent tube 52. A pair of small circuit boards 54 are attached to both ends of the fluorescent tubes 52 of the reflecting plate 51 by soldering the male connectors 53 at the same time.
．． 54, and the reflective plate 51 so as to protrude from the back surface of the reflective plate 51 into the recess between the pair of circuit boards 54 and 54.
It consists of a ground plate 55 attached to the back surface of the ground plate 55.

A pair of male connectors 53, 53 of this reflector unit 50
includes a pair of female connectors 61.6 of the DA inverter 60.
1 is removably attached. This DA inverter 60
has a circuit board 62 in the center. This circuit board 6
2, the pair of female connectors 61 and 61 are fixed by soldering.

A harness 64 is fixed to one end of this circuit board 62 via a connector 63. Connect the female connector 65 at the tip of this harness 64 to the bottom surface 4 of the liquid crystal display main body 4δ.
It is designed to be detachably connected to a male connector 43 fixed to the large circuit board 42 attached to the c side. Further, a thin copper plate 66 is wound around the center of the DA inverter 60, and is brought into contact with the inverted W-shaped tip 55a of the ground plate 55 of the reflector unit 50.

Further, the large circuit board 42 has a color (HUE).
Adjustment knob 442 Color intensity (COLOR) adjustment knob 4
5 is rotatably supported. Each of these adjustment knobs 44
．． The operation surfaces 45 are exposed to the outside from the bottom surface 4C of the liquid crystal display main body 4.

When the reflector unit 50 and the DA inverter 60 are incorporated into the LCD unit composed of the color liquid crystal panel 41 and the large circuit board 42 of the liquid crystal display main body 4, the left side of the liquid crystal display main body 4 Insert the reflector unit 50 through the opening 4d, fix the reflector 51 of the reflector unit 50 to the circuit board 42 with one screw 56, and then
The DA inverter 60 is inserted through the gap formed between the left side surface of the circuit board 42 and the left end of the circuit board 42, and the pair of male connectors 53° 53 of the reflector unit 50 and the pair of female connectors 61 of the DA inverter 60 are inserted. It can be easily assembled by connecting .61. Note that the opening 4d on the left side of the liquid crystal display main body 4 is covered with a lid 4e.

Further, on the right side of the liquid crystal display main body 4, a third
As shown in the figure, a brightness adjustment knob 46 for adjusting the brightness of the liquid crystal panel 41. A volume adjustment knob 47 and the like are also provided. Further, on the front of the liquid crystal display main body 4, as shown in FIG.
9a+ A timer recording on/off button 49b, next button 49C, plus button 49d, timer setting/reservation confirmation button 49e, and current time setting button 49f are provided.

As shown in FIGS. 3 and 7, the tip of the bottom surface 4C of the liquid crystal display body 4 has a locking hole 2f that engages with a locking hole 2f formed at the tip of the top surface of the thin section 2b of the VTR body 2. A lock bin 6 is provided protrudingly to maintain the tilted horizontal state of the liquid crystal display main body 4. Further, the upright state of the liquid crystal display main body 4 is maintained by a coil spring (not shown) wound around the hinge 5.

According to the TV integrated VTR 1 of the above embodiment, when finely adjusting the intensity of the nine colors of the liquid crystal display 3, hold the VTR main body 2 with your left hand and move the liquid crystal display main body 4 with your right hand to the two points shown in FIG. Stand up at a predetermined angle upward as shown by the chain line. This makes it easier to see the screen on the liquid crystal display 3, and allows you to easily operate the hue adjustment knob 441 and color density adjustment knob 45 with your right hand while looking at the screen on the liquid crystal display 3, making adjustment work easier. It can be carried out. When carrying the device, etc., the liquid crystal display 3 can be tilted and the bottom surface 4c of the liquid crystal display main body 4 can be connected to the VTR.
Since the upper surface of the thin wall portion 2b of the main body 2 is in contact with the upper surface of the thin wall portion 2b with almost no gap, each of the adjustment knobs 44, 45 is not exposed to the outside, and it is ensured that each adjustment knob 44, 45 is not touched by mistake. can be prevented. Note that even when the liquid crystal display 3 is upright, each of the adjustment knobs 44 and 45 is arranged on the bottom surface 4c of the liquid crystal display main body 4, so there is no need to carelessly touch each of the adjustment knobs 44 and 45. There is no problem and it is easy to use.

In addition, the liquid crystal display 3 is constructed by inserting a reflector unit 50 between the liquid crystal panel 41 of the LCD unit and the circuit board 42 through the opening 4d on the left side of the liquid crystal display main body 4, so that the reflector unit 500 has a reflector plate. 51 and the circuit board 42 are fastened with one screw 56, and the DA inverter 6
0 through the gap formed between the left side surface of the liquid crystal display main body 4 and the left end of the circuit board 42, and connect the pair of male connectors 53, 53 of the reflector unit 50 and the pair of female connectors of the DA inverter 60. It can be easily assembled by combining 6I and 61, or easily disassembled by reversing the steps described above.

Thereby, when replacing the fluorescent tube 52, etc., the reflector unit 50 can be easily replaced without disassembling the circuit board 42, and serviceability and reliability can be improved. Further, the reflector unit 50 and the DA inverter 60
are integrated by connecting the connectors 53 and 61, eliminating the need for wiring high voltage cords, and
The distance from the high voltage output to the fluorescent tube 52 is short and there is little voltage drop. Furthermore, since the reflector plate 51 etc. also serves as a socket for the fluorescent tube 52, the number of parts can be reduced without reducing the number of parts.
Cost reduction can be achieved.

In addition, according to the above embodiment, the adjustment knob for adjusting the darkness of one color is arranged on the bottom of the liquid crystal display body, but the adjustment knob is limited to the adjustment knob for adjusting the darkness of one color. isn't it. Furthermore, in the above embodiment,
Although a fluorescent tube is used as the light emitting body, the present invention is not limited to this, and electroluminescence (EL) or the like may be used as the light emitting body.

[Effects of the Invention] As described above, according to the present invention, a reflector unit including a light emitting body is detachably attached to the back of the liquid crystal panel of the liquid crystal display main body, and a DA is connected to the connector of the second reflector unit. Since the inverter connector is connected detachably, the liquid crystal display can be easily assembled and disassembled. Thereby, it is possible to further improve the ease of assembling the liquid crystal display and the serviceability when replacing the light emitter and the like.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a liquid crystal display showing an embodiment of the present invention, and Fig. 2 is a TV using the same liquid crystal display.
A plan view of the integrated VTR, Figure 3 is a right side view of the VTR,
Figure 4 is a left side view of the same VTR, Figure 5 is a front view of the same VTR, Figure 6 is a rear view of the same VTR, and Figure 7 is A--A in Figure 4.
8 is a perspective view of the same VTR, FIG. 9 is an assembly explanatory diagram showing a part of the liquid crystal display in cross section, and 1st
Figure 0 is a plan view of the reflector unit used in the liquid crystal display, Figure 11 is an explanatory diagram of the center position of the power switch, Figure 12 is a cross-sectional view taken along line B-B in Figure 11, and Figure 13 is a diagram showing the center position of the power switch. An explanatory diagram of the power on/off position of the power switch, Fig. 14 is a sectional view taken along the line C-C in Fig. 13, Fig. 15 is an explanatory diagram of the camera line switching position of the power switch, and Fig. 16 is a sectional view taken along line C-C in Fig. 13. It is a sectional view taken along line DD in the figure. 3...Liquid crystal display, 4...Liquid crystal display body, 41...Liquid crystal panel, 50...Reflector unit, 51...Reflector, 52...Fluorescent tube (luminous body),
53... Connector, 60... DA inverter, 61
···connector. 14 ffl history A -A [Nff1[End 7 top view rear view @ source switch center position g EIM ffl
11. Cross-sectional view taken along line s-B in Figure 12. Figure 1. Explanatory diagram of power on/off position of the switch. 13.
Figure 14: Cross-sectional view taken along line c-c in the figure.

Claims (1)

[Claims] (1) A reflector unit consisting of at least a light emitter and a connector integrated into a reflector plate is detachably attached to the back of the liquid crystal panel of the liquid crystal display main unit, and a DA inverter connector is detachably attached to the connector of this reflector unit. A liquid crystal display characterized by a combination of