JP3474458B2 - Video equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video device in which a television device and a video device are housed in the same case. A television device is a device that receives a television broadcast and reproduces video and / or audio. A video device is, for example, a video tape recorder, a video disk player, or the like.
A device that records and / or reproduces video and / or audio. 2. Description of the Related Art A conventional video device in which a television device and a video device are housed in the same case and integrated is a video device as shown in FIG. 6 (rear view of the video device) and FIG. Device 1
Is mounted on the bottom plate 2a in the case 2, the front surface thereof is fixed with screws 3 in front of the front plate 2b of the case 2, and the rear portion is screwed to the rear cabinet 8 as shown in FIG.
It has been stopped. The chassis 1a of the video device 1 is mounted on a plastic molded casing 1b.
As shown in FIG. 7, a plurality of video printed circuit boards 4 are arranged at the rear of the chassis 1a or the rear of the casing 1b. A television printed wiring board 5 for a television device is mounted along one inner side surface in the case 2, and a television power supply including a high-frequency high-frequency transformer 6 is arranged on the television printed wiring board 5. Has been established. A video power supply (not shown) is separately provided on the video printed wiring board 4. In FIG.
Reference numeral 7 denotes a shield plate provided on the upper surface of the video device. FIG. 8 is a block diagram showing an electronic circuit of an integrated video device in which a conventional television device and a video device are housed in the same case. Here, 80 is a video side block circuit,
Reference numeral 92 denotes a television block circuit. 81 is a tuner,
82 is a switch for inputting a television signal from an antenna and a signal from a video camera; 82a is a video camera input terminal; 82b is a microphone input terminal; 83 is a circuit such as a luminance / color signal and an RF converter; An output terminal, 84 is a recording amplifier, 85 is a reproduction amplifier, and 86 is a video head. 87 is an audio recording / reproducing amplifier, 88b is an audio output terminal to a television, 89 is a bias OS circuit,
0 is an audio head, 91 is a video side block circuit 8
0 power supply circuit. On the other hand, in the TV side block circuit 92, 93 is a chroma circuit, 93a is a video input terminal, 94,
95 is a vertical deflection driver, a horizontal deflection driver, respectively.
96 is a high voltage output circuit. Reference numeral 97 denotes an audio / speaker amplifier; 97b, an audio input terminal for video; and 98, a power supply circuit of the TV-side block circuit 92. Note that 99 is a speaker, 100 is a CRT, and 101 is an AC input terminal. As shown in FIG. 8, the video-side block circuit 80 and the television-side block circuit 92 are mounted on the video printed circuit board 4 and the television printed circuit board 5, respectively. [0006] As described above, conventionally, a VCR is inserted into a case of a television apparatus,
It was a structure attached as it was. Therefore, FIG.
A large number of connection lines between the printed wiring board 5 for television and the printed wiring board 4 for video shown in FIG. As is apparent from FIG. 8, the connection lines from the luminance / color signal circuit 83 and the audio recording / reproducing amplifier 88 of the video block circuit 80 to the chroma circuit 93 and the audio speaker / amplifier 97 of the television block circuit 92 and Therefore, it is necessary to provide a connection line from the AC input terminal 101 to the video power supply circuit 91 and the television power supply circuit 98. In addition, installation of the television printed wiring board 5 and the video printed wiring boards 4... 4 is troublesome. [0008] Furthermore, since the conventional design was such that the VCR was housed in the case as it was, a power supply for video was provided for the VCR, and a power supply for TV was provided for the TV device. Scores are high, and
There was a drawback that the video device picked up noise due to the television power supply. The present invention has been made in view of the above circumstances. [0009] An image apparatus according to the present invention has a CR.
In a video device in which a television device having a T and a video device having a magnetic head are housed in the same case, the CRT is disposed above the case, and the video device is disposed at the bottom of the case, A video mechanism component mounting chassis is mounted on a circuit board such that the magnetic head is disposed near one side of the circuit board, and the circuit board is disposed on a bottom of the case in a horizontal state. And a power supply circuit including a vertical deflection driver, a horizontal deflection driver, a high-voltage output circuit, and a high-frequency transformer of the television device are provided in the same area 14A on the one circuit board, and the area 14A is provided. The power supply circuit is disposed near the other side surface of the case, and the power supply circuit includes
Power supply and low-voltage power supply shared by TV and video equipment
The high-frequency transformer generates the high-frequency magnetic flux.
Core gap plane parallel to the circuit board plane
And the magnetic flux leakage from the high-frequency transformer
The direction of the magnetic field lines is the head of the video head cylinder.
Directly aligned with the direction of the magnetic force lines that are easy to pick up
It is characterized in that it is configured to intersect . BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the case of the present invention viewed from the rear, FIG. 2 is a vertical cross-sectional view of the case of the present invention viewed from the side, FIG. 3 is a front view of a high-frequency high-frequency transformer, and FIG. It is a side view of the high frequency transformer for high voltage. 1 and 2, reference numeral 11 denotes a case, 1
2 is a CRT window, 13 is a speaker window, 14 is a main circuit board, 14A is its power supply area, and 14B is one predetermined area for mounting electronic components. 141 and 142 are main circuit board guides. Reference numeral 15 denotes a chassis for mounting a video mechanism component;
51 and 152 are chassis guides. Chassis guides 151 and 152 and main circuit board guides 141 and 1
Reference numeral 42 is formed integrally with the front plate 11b of the case 11 and disposed in parallel with the bottom plate 11a. To grip the front end of the chassis 15 (two-dot chain line) of the chassis guides 151, 152, the tapered introduction portions 151a (152a) are fitted to the base ends of the chassis guides 151, 152 on the front plate 11b side. A support 151b (152b) is provided. Introducing portions 141a and 142a and fitting support portions 141b and 142b are also provided on the main circuit board guides 141 and 142 on the front plate 11b side. 151d and 152d are chassis guides 15
An upper guide provided in the middle of the inside of the first and the second 152 is parallel to the bottom plate 11a, and supports the middle of the chassis 15 in the vertical direction. In the figure, 16 is a high frequency transformer. Reference numeral 17 denotes a video tape insertion hole. 18
Is a shield plate. A video mechanism component such as a video head cylinder and a magnetic head is mounted on the video mechanism component mounting chassis 15. As shown in FIG. 1, power supply circuit components are mounted in a power supply area 14A within about 1/4 from the left end side of the main circuit board 14 when viewed from the rear of the case. The CRT electron beam control circuit and the power supply circuit of the television device are provided in the remaining 1/3 predetermined region 14B other than the above-mentioned region, that is, in the region of the main circuit board 14 opposed below the video mechanism component mounting chassis 15. The electronic components except for the electronic components and the electronic components except for the power supply circuit of the video device are mounted. Wiring between the TV-related electronic components and the video-related electronic components is minimized by a printed wiring or the like. In the power supply area where the power supply circuit component is located, A
The C commercial terminal and the terminal connected to the CRT electron beam control circuit are separately arranged, and a high voltage power supply provided with a high voltage power supply high frequency transformer and a low voltage power supply for the television and video electronic components are mounted. Further, the low-voltage power supply for the television electronic device and the low-voltage power supply for the video electronic device are commonly used to reduce the number of components, and the shortest distance between the low-voltage power supply and the television and video electronic components is printed. I do. In FIGS. 3 and 4 of the high-frequency transformer, 16 is a high-frequency transformer, 30 is primary and secondary coils, 31 is a core, and 32 is a core gap. The core gap 32 is arranged and fixed so that the surface thereof is horizontal to the surface of the main circuit board 14. In this state, the magnetic field lines generated from the core gap 32 have no horizontal component as shown in FIG. Since the direction of the line of magnetic force is substantially perpendicular to the direction of the line of magnetic force in which the head gap of the video head cylinder is easily picked up, noise from the high-frequency transformer can be minimized. There is no need to magnetically shield around the high frequency transformer. FIG. 5 is a block circuit diagram of one embodiment of the present invention. Here, reference numeral 103 denotes an electronic circuit in which a video circuit and a television circuit are mounted on a main circuit board 14 which is a single printed circuit board. 81 to 90, 82a, 82
b, 93 to 97 and 99 to 101 are the same as those in FIG. 1
02 is a power supply circuit common to the video circuit and the television circuit. In the main circuit board 14 mounted as described above,
The wiring from the luminance / color signal circuit 83 and the audio recording / reproducing amplifier circuit 88 to the chroma circuit 93 and the audio speaker amplifier circuit 97 can be printed wiring.
In addition, the shortest distance can be designed for the wiring between them in consideration of noise pickup. Power supply circuit 1
Since the video circuit and the television circuit are common as shown in FIG. 02, a power supply circuit that is a source of noise and heat is connected to the main board 1.
4, the electronic circuit components can be compactly arranged in a region excluding the power supply circuit. According to the present invention described in detail above, the following effects can be obtained. The television electronic components and the video electronic components can be arranged at a high density, and the low-voltage power supply is also used for the television and the video.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a case of the present invention as viewed from the rear. FIG. 2 is a longitudinal sectional view of the case of the present invention viewed from the side. FIG. 3 is a front view of the high-frequency transformer according to the present invention. FIG. 4 is a side view of the high-frequency transformer of the present invention. FIG. 5 is a block circuit diagram of the present invention. FIG. 6 is a rear view of a conventional video-integrated television image device. FIG. 7 is a cross-sectional view of a conventional video integrated television image device. FIG. 8 is a power supply block diagram of a conventional video-integrated television video device. DESCRIPTION OF SYMBOLS 11 Case 11a Bottom plate 11b Front plate 12 CRT window 13 Speaker window 14 Main circuit board 14A Power supply area 14B 1 Predetermined area 141, 142 Main circuit board guide 15 Chassis 151, 152 for mounting video mechanism components Chassis guide 151a, 152a Chassis introduction parts 151b, 152b Chassis fitting support part 16 High frequency transformer 17 Video tape insertion hole 18 Shield plate 30 Coil 31 Core 32 Core gap 81 Tuner 82 Input selector switch 82a Video camera input terminal 82b Microphone input terminal 83 Luminance・ Color signal etc. circuit 84 Recording amplifier 85 Reproduction amplifier 86 Video head 87 Servo system control etc. 88 Audio recording / reproduction amplifier 89 Bias OS circuit 90 Audio head 93 Chroma circuit 94 Vertical Deflection driver 95 Horizontal deflection driver 96 High voltage output circuit 97 Audio speaker amplifier circuit 99 Speaker 100 CRT 101 AC input power supply 102 Power supply circuit 103 Electronic circuit mounted on main circuit board

Continuation of front page       (56) References JP-A-49-106302 (JP, A)                 JP-A-59-154486 (JP, A)                 JP-A-64-54980 (JP, A)                 Actual opening 1987-615395 (JP, U)                 Actual opening Hei 2-41574 (JP, U)                 Actual opening 57-35015 (JP, U)

Claims (1)

(57) Claims 1. A television device having a CRT and a video device having a magnetic head are housed in the same case and the C
In a video device in which an RT is disposed in an upper part of a case and the video device is disposed in a bottom part of the case, a video mechanism component mounting chassis is arranged such that the magnetic head is disposed near one side surface of the case. The circuit board is mounted on a circuit board, and the circuit board is a single board horizontally disposed on the bottom of the case. The circuit board includes a vertical deflection driver, a horizontal deflection driver, a high-voltage output circuit, and a high-frequency transformer of a television device. And a power supply circuit including the high-frequency power supply including a high-frequency transformer , wherein the power supply circuit includes a high-voltage power supply including a high-frequency transformer. , Tele
The high-frequency transformer is composed of a low-voltage power supply commonly used for a video device and a video device.
The plane of the gap will be horizontal to the plane of the circuit board.
And the lines of magnetic force of the magnetic flux leakage from the high-frequency transformer
The direction is the head gear of the video head cylinder.
It is almost perpendicular to the direction of the line of magnetic force that is easy to pick up
A video device characterized by the following configuration .