JPS6261193B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a pocketable television receiver.

[Conventional technology]

In recent years, consideration has been given to the practical application of small-sized television receivers that display television images using panel-type image display devices such as dot matrix display type liquid crystal display panels and electroluminescent display panels.

This compact television receiver includes the above-mentioned panel-type image display device, a television tuner, and a television linear circuit that amplifies and detects the intermediate frequency tuned by the tuner to generate video signals, audio signals, and synchronization signals. , which is equipped with a display drive circuit for driving the above-mentioned panel-type image display device and a power source battery, and this television receiver displays television images using the panel-type image display device. Furthermore, in theory, it is possible to make the entire receiver smaller so that it can fit in a pocket.

Conventionally, the above-mentioned small television receivers are
Apart from the receiver main body and display, the tuner, linear circuit, and battery of the above components are housed in the main body case, and the panel type image display device and display drive circuit are housed separately from the main body case. A separate type that is housed in a display case is being considered.

[Problem that the invention seeks to solve]

However, in the above-mentioned separate type small television receiver, since the number of parts stored in the main body case and the number of parts stored in the display case are small, it is easy to assemble the receiver main body and the display part individually. However, on the other hand, two cases, a main body case and a display case, are required, and even if the receiver main body and the display are small in size, it is difficult to combine the receiver main body and the display. Since the size of the receiver is quite large, it is difficult to reduce the overall size of the receiver to a size that fits in a pocket and make it portable.

This invention was made in view of the above-mentioned circumstances, and its purpose is to integrate all components such as a panel type image display device, a tuner, a linear circuit, a display drive circuit, and a battery into one. To provide a pocketable television receiver which is housed in a receiver case and can be made portable by reducing the overall size of the receiver and can be easily assembled.

[Means for solving problems]

This invention provides a display unit in which a panel-type image display device is supported on the front surface of a frame and a display drive circuit board that constitutes a drive circuit for the panel-type image display device is disposed on the back surface of the frame in a receiver case. , a television tuner, and a linear board constituting a television linear circuit, and the display unit is arranged on the front surface side of the receiver case so as to face a display window formed on the surface of the case. The tuner and the linear board are located on the back side of the display unit and shifted to the back side in the receiver case, and the tuner and the linear circuit are arranged in the receiver case. The battery chamber is characterized by forming a battery chamber while avoiding the battery, and storing the battery in this battery chamber.

[Effect]

That is, the present invention provides a panel-type image display device, a television tuner, a linear board constituting a television linear circuit, a display drive circuit board constituting a display drive circuit, and a battery, which are components of a television receiver. All are housed in one receiver case, and in this invention, the display driving circuit board is placed on the back side of the frame that supports the panel type image display device, and the tuner and linear board are placed on the back side. Therefore, the display driving circuit board, the tuner, and the linear board can be housed in the space on the back side of the panel type image display device, and the vertical and horizontal dimensions of the receiver can be kept small. Furthermore, in this invention, the battery chamber formed inside the receiver case is formed avoiding the arrangement position of the tuner and the linear board, so that the receiver case can accommodate the display unit and the parts arranged on the back side thereof. It only needs to be thick enough to accommodate both the thick tuner and the receiver. Accordingly, according to the present invention, the overall size of the receiver can be reduced to make it portable. Moreover, in this invention, the panel type image display device and the display driving circuit board of the above-mentioned components are combined into one unit, so that the panel type image display device and the display driving circuit board can be integrated into one unit. It can be incorporated into the machine case, and therefore the receiver can be easily assembled.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show the external appearance of a television receiver. In the figures, 10 is a receiver case, and 11 is a hood provided on the surface of the case 10 so as to be openable and removable. The case 10 includes a front case 10a having a television image display window 12 and a sound emitting section 13 on the front, and an intermediate case 10b.
and a rear case 10c, a glass plate 14 is attached to the display window, and a sound emitting part 13
A large number of small holes 15, 15 for sound emission are bored in the. Further, on the upper side of the case 10, there is provided a slide switch operation knob 16 that serves as a power switch and a VHF-UHF changeover switch. External power connection port 17 and connection port 18 for an external antenna (for example, an outdoor antenna) used when using a battery box sold as an accessory for a television receiver, and a latching hole for a hand strap. 19 are provided. Although not shown, the hand strap has a latching fitting that is detachably latched onto a pin 20 provided in the hand strap latching hole 19. Furthermore, FIG. 3 shows the state in which the hood 11 is removed and the rod antenna 21 is pulled out, and when not in use, the rod antenna 21 is inserted into the case 10 with its tip 21a left as shown in FIGS. 1 and 2. It is now stored in the. On the other hand, the hood 11 has a shape as shown in FIG. 4, and is pivoted to the case 10 in the following manner so that it can be rotated to open and close around its rear end and can be removed. That is, the hood 11
At the rear end of one of the edge plates 11a and 11b on both sides, an elliptical cylindrical part 22 is provided which projects from the outer surface of the edge plate 11a and has both ends opening on the inside and outside of the edge plate 11a. A circular pivot hole 23 is bored in the rear end of the other edge plate 11b, and an oval cap-shaped knob 24 is provided on the outside of the cylindrical portion 22.
are fitted so as to be slidable in the axial direction, as shown in FIG. At the center of this cap-shaped knob 24, a shaft portion 24a that projects into the cylindrical portion 22 is formed. Furthermore, as shown in FIGS. 4 and 5, inside the cylindrical portion 22 is an elliptical clutch having a plurality of locking teeth 26 radially provided at equal angular intervals on a surface facing the side surface of the case 10. A plate 25 is inserted so as to be movable in the axial direction, and this clutch plate 2
5 is fixed to the shaft portion 24a of the cap-shaped knob 24 by a set screw 27. Further, the clutch plate 25 is pressed toward the case 10 by a coil spring 28 which is held in a compressed state between the clutch plate 25 and a flange 22a formed on the inner periphery of the outer end of the cylindrical portion 22. ing. The clutch plate 25 has locking grooves 2 formed radially at equal angular intervals on the outer surface of the case 10 at the hood pivot position so as to mesh with the locking teeth 26 of the clutch plate 25.
9 and is engaged with the case 10 by the elastic force of the coil spring 28. Also, the hood 1
The other side of the case 10 is connected to the case 10 via the rod antenna 21 by fitting the pivot hole 23 into the rod antenna tip 21a protruding from the side surface of the case as shown in FIGS. 1 and 2. supported. Therefore, the hood 11 can be opened and closed by rotating the cap-shaped knob 24 around its rear end while pulling the cap-shaped knob 24 outward to separate the clutch plate 25 from the side surface of the case 10. and the clutch plate 2
5 can be held at a desired opening angle by engaging with the side surface of the case 10. Further, the hood 11 is connected to the cap-shaped knob 2.
4 outward to release the clutch plate 25 from the side of the case 10, pull out one side of the hood 11 in the direction of arrow X shown in FIG. 2, and then pull the hood 11 in the direction of arrow Y to release the locking hole. 23 from the antenna tip 21a, it can be easily removed from the case 10, so if the hood 11 gets in the way, it can be removed as desired. In addition,
The hood 11 may be attached by performing the procedure reverse to the removal operation. Further, the hood 11 is formed with a bulge 30 that provides relief for the slide switch operation knob 16 on the upper side of the case. This bulge 30 is formed only at a portion of the switching position of the operation knob 16 that corresponds to the power OFF position, so that the hood 11 can be operated without switching the operation knob 16 to the OFF position (without turning off the power). If you try to close the hood 11, the operation knob 1
6, the hood 11 cannot be completely closed to prevent forgetting to turn off the power.

In addition, the back side of the case 10 (back side case 10
On the back side of c), there is a stand plate 31 for supporting the television receiver at an angle where the screen can be easily viewed by being pulled up as shown by the two-dot chain line in FIG. 2 when the television receiver is placed on a desk or the like. is provided. 6 and 7 show the mounting structure of the stand plate 31. The stand plate 31 is provided with pivot plate parts 32a and 32b having support shaft insertion holes 33a and 33b on both sides of its front edge. It is said that the shape is
Among the pivot plate parts 32a and 32b, the pivot plate part 32a on the side surface of the case is fan-shaped with an inner surface having a radial serrated surface 34. Also,
A recessed portion 35 in which the stand plate 31 is folded and stored is formed on the back surface of the back case 10c, and each pivot plate portion 32 of the stand plate 31 is
Openings 36a and 36b into which the openings 36a and 32b are inserted are bored, and furthermore, openings 36a and 36b are formed in the back side case 10c at a position a suitable distance away from the opening 36a on the side of the case and on both sides of the other opening 36b. Thus, bearing tubes 37a, 37b, and 37c are integrally provided. A support shaft 38 for pivotally supporting the stand plate 31 to the case 10 is inserted through a shaft insertion hole 39 protruding from the side surface of the back case 10c, and one support shaft insertion hole 33a of the stand plate 31,
Bearing tubes 37a and 37b of the back case 10c,
The stand plate 31 is rotatably supported by being inserted into the other support shaft insertion hole 33b of the stand plate 31 and the bearing tube 37c of the rear case 10c. 40 is fitted into a groove 41 provided in the support shaft 38 and is attached to the support shaft 3.
This is the E ring that prevents the 8 from slipping out.
The ring 40 is adapted to be received by a bearing tube 37a on the side surface of the rear case 10c. The support shaft 38 also includes the stand plate 3.
A fan-shaped clutch plate 42 facing the fan-shaped pivot plate 32a of 1 is fitted so as to be slidable in the axial direction.
case side bearing tube 37a and clutch plate 42 of c.
The fan-shaped pivot plate portion 32a of the stand plate 31 is supported by the coil spring 43 held in a compressed state between
have been subjected to oppression. Furthermore, the surface of the sector-shaped clutch plate 42 facing the sector-shaped pivot plate 32a is formed into a radial serrated surface 44 and is adapted to mesh with the serrated surface 34 of the sector-shaped pivot plate 32a. Also, this fan-shaped clutch plate 42 has both fan-shaped end surfaces 42a, 42b connected to the rear case 10c.
Rotation is prevented by slidably contacting the bottom and inner surfaces of the holder. Further, the support shaft 41 has a stepped portion 45 that comes into contact with the fan-shaped clutch plate 42, and the coil spring 43 that presses the fan-shaped clutch plate 42 causes the push-button-like pressing operation portion 38a at the outer end of the support shaft to be pressed. is pressed so as to protrude outside the case 10. And the stand board 3
Step 1 is to move the support shaft 38 by pressing the push button-like pressing operation part 38a, and push the fan-shaped clutch plate 42 with the stepped part 45 of the support shaft 38 to release the engagement between the fan-shaped clutch plate 42 and the fan-shaped pivot plate part 32a. It is then pulled up in the raised position, and is locked in the raised position by releasing the pressing force of the push-button pressing operation part 38a and engaging the fan-shaped clutch plate 42 with the fan-shaped pivot plate part 32a by the force of the coil spring 43. be done. Therefore, by pulling up the stand plate 31 to a desired angle and placing the stand plate 31 in contact with a desk or the like, the television receiver can be stably supported in an inclined state. Note that when storing the stand plate 31, the push button-like operation part 38 is pressed in the same manner as the raising operation.
All you have to do is press a to collapse the stand board 31.

Next, the internal configuration of this television receiver will be explained.

First, the circuit configuration of the television receiver shown in FIG. 8a will be explained. In this television receiver, the circuit board is connected to the antenna board 1
0, knob board 110, linear board 120, power supply circuit board 130, display drive control circuit board 140,
The display drive circuit board 150 is divided into two parts, each board 10
0 to 150 constitute a circuit to be described later. In addition to the respective substrates 100 to 150 described above, a television tuner 160, a speaker 170, and a panel type image display device 180 are provided. As the panel type image display device 180, for example, a dot matrix liquid crystal display panel or an electroluminescent display panel is used. In this embodiment, an electroluminescent (EL) panel is provided on the back side of the dot matrix liquid crystal display panel 181 for illumination. The dot matrix liquid crystal display panel 181 is of a double matrix type with a display dot count of 120 x 160, and is a TN panel driven at a duty rate of 1/65.6. (twisted nematic) type is used. This liquid crystal display panel 18
The reason for using 1 will be described later.

A rod antenna 21 provided in the receiver and an external antenna connection jack are connected to the antenna board 100. The television radio waves received by the rod antenna 21 or external antenna are transmitted to the tuner 16.
Sent to 0. Further, the knob board 110 is provided with a tuning knob 61 for selectively operating television radio waves, and the operation signal is sent to a circuit configured on the linear board 120.
The linear board 120 includes a tuner power supply circuit 1
21, a tuning control circuit 122, a filter circuit 123, a television linear circuit 124, and an audio amplification circuit 125 are provided. The tuning control circuit 122 provides a tuning signal to the tuner 160 in accordance with an operation signal from the tuning knob 61. This tuner 160 selects the television radio waves received by the rod antenna 21 or an external antenna according to the tuning signal from the tuning control circuit 122, converts it to an intermediate frequency, and outputs it to the filter circuit 123. This filter circuit 123 includes a tuner 160
Only the frequency components of the desired channels selected in are passed through, and the frequency components of adjacent channels are removed. Then, the linear circuit 124 amplifies the intermediate frequency signal output from the filter circuit 123, performs video detection, and separates the video signal, audio signal, and synchronization signal. The audio signal output from the linear circuit 124 is amplified by the audio amplification circuit 125 and then sent to the speaker 170, where it is output as audio. Further, the synchronization signal output from the linear circuit 124 is sent to a circuit configured on the power supply circuit board 130, and the video signal and synchronization signal are sent to a circuit configured on the display drive control circuit board 140. The power circuit board 130 includes a power circuit 1
31 and an EL drive circuit 132 are provided,
The power supply circuit 131 supplies an operating voltage to the tuner power supply circuit 121 and a display driving power supply circuit 144, which will be described later. In addition, the EL drive circuit 132 supplies a light emission operating voltage to the electroluminescence lighting panel 182 via a communication circuit 145 formed on the display drive control circuit board 140 based on the synchronization signal from the linear circuit 124, and also controls the display drive. A switching signal is applied to the circuit configured on the circuit board 140. The display drive control circuit board 140 is provided with an analog/digital conversion circuit (hereinafter referred to as an A/D converter) 141, an auto level control circuit 142, a display drive control circuit 143, and a display drive power supply circuit 144. The output voltage of the display drive power supply circuit 144 is turned on and off by the switching signal from the EL drive circuit 132.
The output voltage is supplied as an operating power source to a display drive control circuit 143 and a display drive circuit 151 configured on a display drive circuit board 150. The above auto level control circuit 142
detects the level of the video signal from the linear circuit 124 and provides an upper limit reference potential V _H and a lower limit reference potential V _L to the A/D converter 141 . The A/D converter 141 converts the video signal from the linear circuit 124 into 4-bit, 16-gradation digital data using the reference potentials V _H and V _L and inputs it to the display drive control circuit 143 . This display drive circuit 143 operates in synchronization with the synchronization signal from the linear circuit 124, supplies a drive signal to the scanning side electrode of the dot matrix liquid crystal display panel 181, and supplies the A/D converter to the signal side display drive circuit 151. Outputs 4-bit data from 141. The display drive circuit 151 supplies a drive signal to the signal side electrode of the liquid crystal display panel 181 according to the 4-bit data. Further, the power supply circuit 131 is
As shown in FIG. 8b, the display drive control circuit board 14
0 display drive power supply circuit 144, EL drive circuit 132, and linear circuit 124 of the linear board 120.
These voltage supply lines supply voltage to each of the circuits 144, 132,
They are arranged in parallel so that the voltage supplied to the circuits 124 does not fluctuate due to mutual influence between the circuits, and each line is provided with a resistor and a capacitor for noise countermeasures.

Here, we will explain why a TN type panel with 120 x 160 dots, double matrix method, 1/65.6 duty is used as the dot matrix liquid crystal display panel 181, and an electroluminescent lighting panel on the back side of the liquid crystal display panel 181. The reason for providing 182 will be explained.

The liquid crystal display for displaying images is a twisted nematic dot matrix liquid crystal display panel that displays images using the display principle of a twisted nematic liquid crystal display panel that displays numbers and characters, which is used as a display for calculators, etc. active matrix type liquid crystal display panels that use a silicon substrate with integrated switching MOS transistors as the substrate of the liquid crystal display panel (this type of liquid crystal display panel includes the DSM type and the guest-host type). There is also a method using the following methods. Comparing these two types of LCD panels, the active matrix type is superior in terms of display contrast, but since the active matrix type uses a silicon substrate, there are restrictions on the panel size, and the price is also high. Therefore, twisted nematic dot matrix liquid crystal display panels are advantageous as displays for liquid crystal television receivers, which require a relatively large screen and are also required to be low in price.

On the other hand, Japanese television transmits one screen every 1/30 seconds, and has 525 scanning lines.
Of these, the number of actually effective scanning lines is approximately 480.
In addition, current television signals have a frequency of 1/60 seconds.
Two screens are sent at a time. Therefore, to display a television image on a dot matrix liquid crystal display panel, 240 scanning side electrodes are required, and since the aspect ratio of the television screen is 3:4, the required display dots are The number is 240x320.

However, the number of display dots is limited in the ultra-compact liquid crystal display panels used in pocket television receivers.
Setting it to 240×320 is almost impossible.

Therefore, in a liquid crystal display panel for a pocket television receiver, half the number of dots,
Television images are displayed with 120 x 160 dots, and even with this number of dots, a satisfactory image can be displayed if the screen size is about 3 inches.

Furthermore, regarding scanning driving, if 120 scanning electrodes are sequentially driven, the selection time for one scanning electrode is too short, making it difficult to operate the liquid crystal reliably. Therefore, it is conceivable to divide the 120 scanning electrodes into 60 electrodes and drive each of the 60 scanning electrodes in each block of the upper and lower halves of the screen. If the scanning side electrodes are divided into two blocks, if the upper and lower scanning side electrodes are driven at the same time, when the signal side electrode is driven by the video signal on one half of the screen, the display will also operate on the other half of the screen. Therefore, in reality, when the video signal for the upper half of the screen arrives, the drive signal for the scanning side electrode for the lower half is stored in memory, and when the video signal for the lower half comes, it is stored in memory using the memory signal. It is necessary to drive the scanning side electrodes in the lower half, and therefore the circuit configuration for display driving becomes complicated.

Therefore, a method called the double matrix method was devised, and in this double matrix method liquid crystal display panel, the width of the scanning side electrode is divided into two display dots.
The width of each scanning side electrode is 120, and two signal side electrodes are placed opposite to each other in the width direction of each scanning side electrode. Therefore, if a double matrix method is used, the number of scanning side electrodes, that is, the number of scanning lines is half of 120. Only 60 lines are required, and the circuit configuration for driving the display is also simplified. This dual matrix type liquid crystal display panel is driven for display at a duty of 1/65.5.

Furthermore, the electroluminescent lighting panel 182 is provided on the back surface of the liquid crystal display panel 181.The reason why the electroluminescent lighting panel 182 is provided on the back surface of the liquid crystal display panel 181 is that the liquid crystal display This is to display an easy-to-see image with a bright screen and good contrast even if the panel 181 is of a double matrix type (see specification of Utility Model Application No. 57-20796). Note that if the outside is too bright, it will be difficult to see the image even if the electroluminescent lighting panel has high brightness, so this embodiment is provided with a hood 11 that can be opened and used as shown in FIG. Hey, this food 1
1 to prevent external light from hitting the screen.

FIG. 9 shows each of the substrates 100 to 15 shown in FIG. 8a.
0, the tuner 160, and the image display device 180. A flexible substrate 200 led out from the side of the display drive control circuit board 140 is connected to the scanning side electrode terminal of the liquid crystal display panel 181 by thermocompression bonding. Flexible substrates 201, 201 led out from the display drive circuit board 150 are connected to the terminals of the signal side electrodes of the liquid crystal display panel 181, and the lead wires 182a of the electroluminescent lighting panel 182 are connected to the display drive control circuit. Communication circuit 1 with the EL drive circuit of the board 140
45 (see FIG. 8a) by soldering, and the display drive control circuit board 140 and the display drive circuit board 150 are connected to the flexible cable 20.
2 are connected to each other by thermocompression bonding. That is, the image display device 180 (liquid crystal display panel 1
81 and electroluminescent lighting panel 18
2), the display drive control circuit board 140, and the display drive circuit board 150 are connected to each other and put together as a display unit A. Further, the power supply circuit board 130 is used as a single power supply circuit unit B, and this power supply circuit board 130 controls the display drive of the display unit A through one flexible cable 203 soldered to the connection part thereof. It is designed to be removably contact-connected to the circuit board 140 and fixedly connected to the linear board 120 by soldering. The linear board 120 and the tuner 160 constitute a linear unit C and a tuner unit D, respectively, and the tuner 160 is connected to the knob board 110 via a single flexible cable 204 soldered to the connection part thereof. are removably contact-connected and linear substrate 1
20 is fixedly connected by soldering. In addition, the tuner 160
and the antenna board 100 are connected to each other by soldering via a lead wire 205.

FIG. 10 shows a power supply circuit unit B consisting of the power supply circuit board 130, a linear unit C consisting of the linear substrate 120, a tuner unit D consisting of the tuner 160, a knob board 110, and an antenna board 100 in the receiver case 10. Indicates the location.

To specifically explain the internal structure of the television receiver having the above circuit configuration, in FIGS. 11 and 12, 10a is the front case of the receiver case 10, 10b is the middle case, 10c is the back case, and 14. is front case 1
A glass plate attached to the image display window 12 of 0a,
21 is a rod antenna, and this rod antenna 21 is inserted and stored in an antenna storage groove 46 provided on the mating surface of the intermediate case 10b and the back case 10c, and is screwed to the inner surface of the antenna drawer side of the back case 10c. It is slidably held in an antenna holding tube 47. Also,
A hinge 48 is attached to the base end of the rod antenna 21.
An antenna terminal tube 49 having a stopper flange 50 is attached to the rear end through the antenna terminal tube 49, and as the rod antenna 21 is pulled out, the antenna terminal tube 49 slides within the antenna storage groove 46, and the antenna holding tube 49 slides into the antenna holding tube. The stopper flange 50 is fitted into the antenna holding tube 47 until it touches the antenna holding tube 47, and is electrically connected to the antenna holding tube 47.
Further, the antenna holding tube 47 has its terminal plate 4
7a and is electrically connected by contact with an antenna substrate 100 which is screwed together with the rear case 10c, and furthermore, the antenna substrate 100
An external antenna connection jack 51 is attached to the case by soldering so as to face the external antenna connection port 18 on the side surface of the case. Furthermore, the hinge 48 between the rod antenna 21 and the antenna terminal tube 49 is connected to the case 10 when the rod antenna 21 is pulled out of the case 10, as shown in FIG.
Case 1
The angle of the rod antenna 21 pulled out to the outside can be changed freely and over a wide range using the hinge 48 as a fulcrum. In addition, the back case 1
0c is formed with a battery chamber 52 that opens on its back surface, and this battery chamber 52 is shown in FIGS. 13 and 1.
The configuration is as shown in Figure 4. That is,
This battery compartment 52 contains three AA batteries 53a, 5
3b and 53c are housed side by side and connected in series, and the inner wall 52a at one end of the battery chamber 52 is provided with a battery contact plate 54 having a length that contacts the two batteries 53a and 53b on the right side and the center in the figure. A connecting terminal/battery contact plate 55 that contacts only the left battery 53c is provided, and battery contact springs 56a, 56b, 56c are provided on the inner wall 52b on the other end side of the battery chamber 52 to make elastic contact with the batteries 53a, 53b, 53c, respectively. Among the battery contact springs, the battery contact spring 56a on the right side in the figure is an independent one that also serves as a connection terminal, and the other two battery contact springs 56b and 56c
are considered to be shorted together. Furthermore, 54
a, 54b and 55a are the respective battery contact plates 54,
This is a battery contact protrusion formed at 55. and,
Of the three batteries, the batteries 53a and 53c on both sides are
The battery 53b in the center is housed in the battery compartment 52 with its + (plus) pole in contact with the battery contact plates 54, 55 and its - (minus) pole in contact with the battery contact springs 56a, 56c. 56b, the battery contact plate 54 is housed with the negative pole in contact with the battery contact plate 54. In other words, this battery chamber 52 is arranged so that the battery contact springs 56a, 56b, 56c are all aligned on one end side by storing the battery 53b in the center in the opposite direction to the batteries 53a, 53c on both sides. With this configuration, the battery 53a, 53b, 53 is operated while compressing the battery contact springs 56a, 56b, 56c.
It is possible to insert all three pieces c from the same direction and at the same time. However, since batteries are generally inserted with the positive terminal in contact with the battery contact plate and the general terminal in contact with the battery contact spring, if the above configuration is used, the central battery 53b may be mistakenly inserted.
In this embodiment, the battery contact plate 5 is inserted in the same direction as the batteries 53a and 53c on both sides.
The contact protrusion 54b with the battery 53b at the center of the battery 53b is formed to have a large diameter, and an escape hole 57 with a diameter that allows the positive electrode of the battery to enter is provided in the center to prevent the battery 53b at the center from being accidentally inserted. If you insert it in the vertical direction, battery 5
3b is not electrically connected.

On the other hand, in FIG. 11, 58 is the intermediate case 1
The chassis 58 is integrally formed with the chassis 58, and the knob board 110, the speaker 170, the tuning knob 61, and the volume adjustment knob 62 are attached to the chassis 58 to form a chassis unit. Reference numeral 171 denotes a buffer body provided above and below the speaker 170, and the speaker 170 is housed in a speaker accommodating portion 59 formed in the chassis 58, and is held down by fasteners 60, 60 screwed to the chassis 58. ing.

FIG. 16 shows the assembled chassis unit E. The chassis 58 has a tuning knob 61, a volume adjustment knob 62, a speaker 170, a tuning dial 63, and a threading pulley 64 arranged as shown in the diagram. , 64 are provided, and the tuning dial 6
The dial portion 3 can be rotated via a thread 65 by turning a tuning knob 61. Further, the thread 65 is connected to the thread hook pulley 6.
4 and 64 as shown in the figure, and a channel selection pointer 66 is attached to this thread 65. Note that 67 is a guide for the pointer 66 and is formed integrally with the chassis 58. Further, the terminal 62a of the volume adjustment knob 62 and the terminal 63a of the tuning dial 63 are soldered to a knob board 110 (not shown in FIG. 16). The knob board 110 also includes a power switch and a power switch, as shown in FIG.
A slider 16a of a slide switch that also serves as a VHF-UHF changeover switch is in contact with it. This slider 16a is moved by an operating knob 16 provided on the case 10 as shown in FIGS. 2 and 3. Furthermore, in FIG. 11, 68 is an earphone jack;
8 is an external antenna connection port 18 of the case 10.
It is soldered to the knob board 110 so as to face an earphone connection port (not shown) provided on the side surface opposite to the side surface on which the earphones are provided.

Further, in FIG. 11, reference numeral 69 is an external power supply connection jack provided opposite to the external power supply connection port 17 of the case 10, and this jack 69 is soldered to the power supply circuit board 130.

The power supply circuit board 130 and the linear board 120
The tuner 160 and the tuner 160 are arranged on the back side of the chassis unit E as shown in FIG. 12, and the display unit A is arranged on the front side of the chassis unit E.

As shown in FIGS. 17 to 20, the display unit A has a liquid crystal display panel 181 disposed on the surface of a frame 70, and both sides of the liquid crystal display panel 181 are attached to the frame 70 with double-sided adhesive tape 71.
At the same time, an electroluminescent lighting panel 182 is inserted between the liquid crystal display panel 181 and the frame 70, and four signal-side electrode driving LSIs 72a and 72 are installed on the back side of the frame 70.
A display drive control circuit board 150 having electrodes b, 72c, and 72d on its front surface is arranged, and a display drive control circuit board 140 having one scan-side electrode driving LSI 72e on its back surface is stacked on its back surface. The flexible substrate 201, which is thermocompression bonded to the side of the display drive control circuit board 140 and led out from the circuit board 140, is connected to the scanning side electrode terminal of the liquid crystal display panel 181 by thermocompression bonding. Further, the display drive circuit board 150 is a flexible film board with a reinforcing plate 150a adhered to the back side, and both sides of the film board are extended to an appropriate length from the part of the display drive circuit 150 reinforced by the reinforcing plate 150a. This is used as a flexible substrate 200 for connecting a display panel. The flexible substrate 200 is superimposed on the terminal of the signal side electrode of the liquid crystal display panel 181 from a direction perpendicular to the flexible substrate 201 on the display drive control circuit board 140 side, and is attached to the frame 70 with set screws 74. It is connected in contact with the terminal of the signal side electrode by a presser plate 73 which is attached to the terminal. In addition, in FIG. 17, 75 is a rubber material that comes into contact with the flexible substrate contacting surface of the presser plate 73.

Furthermore, the liquid crystal display panel 181 divides its signal electrode group into four blocks, and connects the four signal side electrode driving LSIs of the display driving circuit board 150.
Each block is driven to display by 72a, 72b, 72c, and 72d. This is done for the following reasons.

That is, in this embodiment, since the dot matrix liquid crystal display panel 181 is of the double matrix type as described above, the number of signal side electrodes is 320. The total number of terminals is 320 + α (here α is the number of terminals for inputting control signals, etc.).
Although LSI is required, large-scale multi-terminal
LSIs are quite expensive and lack versatility, so using large LSIs with multiple terminals is disadvantageous in terms of cost. Therefore, in this embodiment, the screen of the double matrix dot matrix liquid crystal display panel 181 is divided into four 1/4 blocks a, b, c, and d as shown in FIG. , c, d signal side electrode terminals Y ₁ to Y ₈₀ ,
Y′ ₁ to Y′ ₈₀ , Y ₈₁ to Y ₁₆₀ , Y′ ₈₁ to Y′ ₁₆₀ are connected to the four signal side electrode driving LSIs 72a, 72b, 72c,
72d respectively to connect the liquid crystal display panel 181.
The screen is driven 1/4 screen at a time. In this way, the LSIs 72a, 72b, 72c,
72d can be a small one with 100 terminals, and this
100-pin LSIs are highly versatile and inexpensive, making it possible to reduce costs. Further, since the number of scanning side electrodes of the double matrix type dot matrix liquid crystal display panel 181 is 60, the scanning side electrode driving LSI 72e provided on the display drive control board 140 may also have 100 bins. Figure 22 shows the liquid crystal display panel 181 and signal side electrode drive.
The connection state with the LSIs 72a, 72b, 72c, 72d and the scanning side electrode driving LSI 72e is shown.

In addition, the four signal side electrode driving LSIs 72
When arranging a, 72b, 72c, and 72d on the display drive circuit board 150, in the normal mounting method,
The printed wiring that connects the LSIs on the circuit board 150 and the printed wiring that connects to the terminals of the signal side electrodes of the liquid crystal display panel 181 are mixed together, making the routing of the printed wiring complicated, and the circuit board 150 is also large. Therefore, in this embodiment, as shown in FIG.
2c and 72d are arranged so as to be line symmetrical to each other, and the terminals of the LSIs 72b and 72d are forward formed and attached to the circuit board 150, and the terminals of the LSIs 72a and 72c are reverse formed and attached to the circuit board 150 with the terminals turned upside down. It is installed on. In addition, in the figure, 1 → 20, 21 → 5
0,51→70,71→100 are each LSI72a,
Terminal numbers 72b, 72c, and 72d are shown. In this way, the four LSIs 72a, 72b,
If 72c and 72d are placed, the paired LSI 72
The shortest distance between the common terminals 51 and 70 of a and 72b and 72c and 72d is printed wiring 7.
6 and 76, which simplifies the routing of printed wiring on the circuit board surface and connects the circuit board 1.
50 can be reduced in size.

Further, on the back side of the glass plate 14 attached to the display window 12 of the front case 10a, a blinding frame 77 surrounding the screen is printed as shown in FIGS. 24 and 25. , so that its inner edge 77a is located approximately at the center of the outermost display dot (pixel) d of the liquid crystal display panel 181, as shown in FIG. In addition, the second
In FIG. 5, 181a is a liquid crystal display panel 181.
The upper electrode substrate 181b is the lower electrode substrate 18.
1c is a sealing material that adheres the peripheral edges of the upper and lower electrode substrates 181a and 181b;
In FIG. 4, 181d is the liquid crystal display panel 18.
1 (the liquid crystal filled area surrounded by the sealing material 181c). The reason why the outer part of the outermost dot d of the screen displayed by the liquid crystal display panel 181 is hidden by the blinding frame 77 is to make the edge of the screen look sharp and to Seal material 1
This is to completely prevent 81c from being seen from the outside.

FIG. 27 shows the electrical connections of the units A to E. The electrical connections of the units A to E are made when the units A to E are assembled into the case 10. That is, to assemble the television receiver, first set the tuner unit D, linear unit C, and power circuit unit B in the chassis unit E, and then connect the flexible cable 2 that has been connected to the power circuit unit B in advance.
04 in contact with the knob board 110 of the chassis unit E and turn the tuner 160 as shown in FIG.
At the same time, the display unit A is set in the chassis unit E, and the flexible cable 203, which was previously connected to the tuner unit D, is inserted between the chassis 58 of the chassis unit E and the display operation control circuit board 140 of the display unit A. As shown in FIG. 12, the flexible cable 203 and the display unit A are connected by being held together, and the antenna board 100 attached to the tuner unit D and the back case 10c, and the power supply circuit unit B and the battery compartment 52 of the back case 10c are connected. After connecting the lead wires 205 and 206 by soldering, the front case 10a is screwed to the chassis 58 of the chassis unit E, and the back case 10c is attached to the chassis 58.
This is done by screwing it into place.

That is, the television receiver includes a liquid crystal display panel 181, a tuner 160, and a linear circuit 1.
24, a display drive circuit board 140, a display drive control circuit board 140, and a display drive circuit board 150, which constitute a display drive circuit.
Batteries 53a, 53b, 53c and power supply circuit 13
1, such as the power supply circuit board 130, are housed in one receiver case 10. In this television receiver, a display drive control circuit board 140 and a display drive circuit board 150 are housed in a single receiver case 10. The display drive control circuit board 14 is arranged on the back side of the frame 70 which is stacked and supports the liquid crystal display panel 181, and the tuner 160 and the linear board 120 are arranged on the back side with their positions shifted.
0, display drive circuit board 150 and tuner 16
0 and the linear substrate 120 are housed in a space on the back side of the liquid crystal display panel 181, so that the vertical and horizontal dimensions of the receiver can be kept small. Furthermore, in this television receiver, the battery chamber 52 formed inside the receiver case 10 is formed avoiding the placement position of the tuner 160 and the linear substrate 120, so that the receiver case 10 has a battery chamber 52 formed inside the receiver case 10 so as to avoid the placement position of the tuner 160 and the linear substrate 120.
81, frame 70, and display drive control circuit board 14
0 and display drive circuit board 150, and the thick tuner 160, which is one of the parts arranged on the back side thereof, it is sufficient that the display unit A has a thickness that can accommodate both the display unit A, which is made up of the display drive circuit board 150, and the thick tuner 160, which is one of the parts arranged on the back side of the display unit A. Accordingly, the overall size of the receiver can be reduced to make it portable. Moreover, in the television receiver, the liquid crystal display panel 181, the display drive control circuit board 140, and the display drive circuit board 150, among the components mentioned above, are combined into one unit A. The drive control circuit board 140 and the display drive circuit board 150 are collectively installed in the receiver case 1.
0, the receiver can be easily assembled. Further, according to the above embodiment, the receiver can be assembled by simply connecting the display unit A, power supply circuit unit B, linear unit C, tuner unit D, and chassis unit E and storing them in the receiver case 10. Moreover, since each of the units A to E can be assembled individually, it is easy to assemble them.
Furthermore, in this television receiver, the flexible cables 203 and 204 connected to power supply circuit unit B and tuner unit D are connected to chassis unit E and display unit A only by contact, without being fixed to them. The display unit A can be separated from the tuner unit D and the power supply circuit unit B, and repair work can therefore be easily performed. Note that tuner unit D and power supply circuit unit B and power supply circuit unit B and rear case 10c cannot be completely separated because they are connected by lead wires 205 and 206, but it is necessary to make the lead wires 205 and 206 sufficiently long. It will not interfere with repair work.

〔Effect of the invention〕

The pocketable television receiver of the present invention has a display drive in which a panel-type image display device is supported on the front surface of a frame within the receiver case, and a drive circuit for the panel-type image display device is configured on the back surface of the frame. A display unit having a circuit board arranged thereon, a television tuner, and a linear board constituting a television linear circuit are housed, and the display unit is formed on the surface side of the case inside the receiver case. The tuner and the linear board are placed on the back side of the display unit and shifted to the back side in the receiver case, and A battery chamber is formed avoiding the placement position of the tuner and the linear circuit,
Since the battery is housed in the battery chamber, the overall size of the receiver can be reduced to make it more portable, and it can be easily assembled.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
Figure 2 and Figure 2 are external views of the television receiver with the hood closed and with the hood open.
The figure is an external view with the hood removed and the rod antenna pulled out, Figures 4 and 5 are exploded views and enlarged sectional views showing the hood mounting structure, and Figures 6 and 7.
The figures are an exploded view and an enlarged sectional view showing the mounting structure of the stand plate, Figure 8a is a circuit diagram, Figure 8b is a power supply circuit diagram, and Figure 9 is an image of each board, tuner, and tuner shown in Figure 8a. Connection diagram of the display device, Figure 10 is a layout diagram of the power supply circuit unit, linear unit, tuner unit, knob board, and antenna board, Figure 11
13 and 12 are an exploded view of the entire receiver and a sectional view of the assembled state, FIGS. 13 and 14 are longitudinal and cross sectional views of the battery compartment of the case, and FIG.
FIG. 16 is an enlarged view of a portion of the chassis unit, FIGS. 17 and 18 are exploded views and front views of the display unit, and FIG.
Figures 9 and 20 are the lines YY and X in Figure 18.
An enlarged cross-sectional view along the X-ray, Fig. 21 is an enlarged view of the display panel, and Fig. 22 shows the display panel and display driving LSI.
23 is an enlarged view of the display drive circuit board, and FIGS. 24 and 25 are a front view and cross section showing the relationship between the blind frame formed on the back of the glass plate of the display window and the display panel. 26 is an enlarged view of a portion of FIG. 24, and FIG. 27 is a connection diagram of each unit. 10... Receiver case, 12... Display window, 52
...Battery compartment, 53a, 53b, 53c...Battery,
A... Display unit, 70... Frame, 140
... Display drive control circuit board, 150 ... Display drive circuit board, 181 ... Liquid crystal display panel, 182 ...
...Lighting panel, 130...Power circuit board, 120
...Linear board, 124 ...Linear circuit, 160
...Chiyuna.

Claims (1)

[Claims] 1. In a pocketable television receiver that displays television images using a panel-type image display device, the panel-type image display device is supported on the front surface of a frame within the receiver case, and the panel is mounted on the back surface of the frame. A display unit includes a display drive circuit board forming a drive circuit of a type image display device, a television tuner, and a linear board forming a television linear circuit, and the display unit is connected to the television receiver. The tuner and the linear board are placed on the back side of the display unit and are placed on the back side of the receiver case. A pocketable television receiver characterized in that the batteries are arranged in a staggered manner, and that a battery chamber is formed in the receiver case avoiding the arrangement position of the tuner and the linear circuit, and the battery is housed in the battery chamber. .