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1. 发明专利

GB2309367A Reducing stray electric fields in displays 未知
公开(公告)号：GB2309367A
公开(公告)日：1997-07-23
申请号：GB9700874
申请日：1997-01-16
申请人： HITACHI MEDIA ELECTRON KK
发明人： SUGAWARA YOSHIHIKO , MOCHIDA HIDEYUKI , TAKIZAWA KAZUYOSHI
IPC分类号： H01J29/96 , H01F38/42 , H01J29/00 , H04N3/185
摘要： A display monitor which comprises a flyback transformer for supplying a high voltage to a display and an opposite-phase pulse inducing transformer. The flyback transformer includes a core, a primary-side low-voltage coil wound on the core, a secondary-side high-voltage coil wound on the core and divided into high-voltage coil pieces, rectifier diodes connected in series with respective output sides of the high-voltage coil pieces of the secondary-side high-voltage coil so as to form a series circuit, and a high-voltage capacitor connected to a cathode of one of the high-voltage rectifier diodes in a final stage of the series circuit. The opposite-phase pulse inducing transformer is constituted by a core different from the core of the flyback transformer, an opposite-phase pulse inducing coil wound on the different core for inducing a pulse which is opposite in phase to a deflecting yoke driving horizontal pulse, and a different-core high-voltage output line provided on the different core, the opposite-phase pulse inducing transformer being arranged so that the pulse opposite in phase to the deflecting yoke driving horizontal pulse is superimposed on the different-core high-voltage output line.

2. 发明专利

GB2309367B Display monitor 未知
公开(公告)号：GB2309367B
公开(公告)日：1999-12-29
申请号：GB9700874
申请日：1997-01-16
申请人： HITACHI MEDIA ELECTRON KK
发明人： SUGAWARA YOSHIHIKO , MOCHIDA HIDEYUKI , TAKIZAWA KAZUYOSHI
IPC分类号： H01J29/96 , H01F38/42 , H01J29/00 , H04N3/185
摘要： A display monitor which comprises a flyback transformer for supplying a high voltage to a display and an opposite-phase pulse inducing transformer. The flyback transformer includes a core, a primary-side low-voltage coil wound on the core, a secondary-side high-voltage coil wound on the core and divided into high-voltage coil pieces, rectifier diodes connected in series with respective output sides of the high-voltage coil pieces of the secondary-side high-voltage coil so as to form a series circuit, and a high-voltage capacitor connected to a cathode of one of the high-voltage rectifier diodes in a final stage of the series circuit. The opposite-phase pulse inducing transformer is constituted by a core different from the core of the flyback transformer, an opposite-phase pulse inducing coil wound on the different core for inducing a pulse which is opposite in phase to a deflecting yoke driving horizontal pulse, and a different-core high-voltage output line provided on the different core, the opposite-phase pulse inducing transformer being arranged so that the pulse opposite in phase to the deflecting yoke driving horizontal pulse is superimposed on the different-core high-voltage output line.

3. 发明专利

JPH1039817A CATHODE-RAY TUBE PICTURE DISPLAY DEVICE 失效
公开(公告)号：JPH1039817A
公开(公告)日：1998-02-13
申请号：JP19172096
申请日：1996-07-22
申请人： HITACHI LTD , HITACHI MEDIA ELECTRON KK
发明人： JITSUKATA HIROSHI , SAKURAI SOICHI , YOSHIOKA HIROSHI , SATO YOSHIO , MOCHIDA HIDEYUKI , SUGAWARA YOSHIHIKO
IPC分类号： H01J29/00 , G09G1/00 , H04N3/16 , H04N3/18
摘要： PROBLEM TO BE SOLVED: To permit a cathode-ray tube picture display device to be used for a long time by impressing reverse phase pulses canceling pulses to be generated on the interior graphite film of a cathode-ray tube on a high voltage wire via a capacitor to suppress an alternating electric field in a value of not larger than a regulation value and to reduce an adverse influence to the body of the operator of the picture display device. SOLUTION: Reverse phase pulses which have the same phases as phases of and have reversed polarities of pulses to be generated by horizontal deflection pulses driving a deflection yoke through a static coupling on the interior graphic film 10 formed on the inner wall of a glass case for cathode-ray tube 1 are superposed on the pulses and they are made to be canceled with each other. When the amplitude of the pulses generated on the interior graphic film 10 is defined as VDY and the amplitude of the reverse pulses on the graphite film 10 as VFR, the absolute value of the value of VFR with respect to VDY is made to be in the range of 0.65

4. 发明专利

JPH10172846A FLYBACK TRANSFORMER 失效
公开(公告)号：JPH10172846A
公开(公告)日：1998-06-26
申请号：JP33213096
申请日：1996-12-12
申请人： HITACHI MEDIA ELECTRON KK
发明人： GOUKON KIYOHIKO , MOCHIDA HIDEYUKI , SUGAWARA YOSHIHIKO
IPC分类号： H01F38/42 , H01F19/04 , H04N3/18
摘要： PROBLEM TO BE SOLVED: To provide such a flyback transformer that can realize high-voltage insulation easily at a low cost, can reduce alternating electric field, and can be handled easily. SOLUTION: Diodes 3a to 3d for rectifying high voltage are serially connected on the output side of respective high-voltage coils of secondary side where a flyback transformer for supplying high voltage to a Braun tube is divided, and a high-voltage capacitor is connected to the cathode side of final diode. In addition, a high-voltage output line is passed through another core other than the core for flyback transformer, and this core is used as a reverse-phase pulse induction transformer 31 provided with a winding 24 for inducing pulse reverse to horizontal pulse for driving deflection yoke. The pulse reverse to the horizontal pulse for driving deflection yoke is superimposed on the high- voltage output line, thereby reducing alternating electric field radiating from the Braun tube.

5. 发明专利

JPH1050538A FLYBACK TRANSFORMER 失效
公开(公告)号：JPH1050538A
公开(公告)日：1998-02-20
申请号：JP20712896
申请日：1996-08-06
申请人： HITACHI MEDIA ELECTRON KK
发明人： SUGAWARA YOSHIHIKO , MOCHIDA HIDEYUKI
IPC分类号： H01F38/42
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive and handy flyback transformer, capable of reducing an alternate electrical field, without employing an expensive external capacitor insulated by armor case and injection resin mold. SOLUTION: A secondary high-voltage coil 6 is divided into a plurality of coils, and a high-voltage rectifying diode 3 is connected to each high-voltage coil 6 in series. In the flyback transformer in which a built-in high-voltage capacitor 2 is connected to the cathode of the last stage high-voltage rectifying diode 3d, the final stage high-voltage coil 6e is wound reversely, and the reverse pulse generated from the reversely wound high voltage coil 6e is superposed on the cathode of the last stage high-voltage rectifying diode 3d through the built-in high voltage capacitor 2.

6. 发明专利

JPH09162051A FLYBACK TRANSFORMER 失效
公开(公告)号：JPH09162051A
公开(公告)日：1997-06-20
申请号：JP31661595
申请日：1995-12-05
申请人： HITACHI MEDIA ELECTRON KK
发明人： SUGAWARA YOSHIHIKO , MOCHIDA HIDEYUKI , TAKIZAWA KAZUYOSHI
IPC分类号： H01F38/42
摘要： PROBLEM TO BE SOLVED: To provide a cheap flyback transformer wherein using no outer armor case and no expensive external high-voltage capacitor insulated by an infection type resin, its high-voltage insulation and its treatment are made easy and its alternate electromagnetic field can be reduced. SOLUTION: In this transformer, high-voltage rectification diodes 3a-3d are connected respectively in series with the output sides of respective secondary side divided high-voltage coils 6a-6d to connect a high-voltage capacitor 2 with the cathode side of the final-stage diode 3d. In this case, winding a secondary side high-voltage output wire 22 around the core of this flyback transformer in the opposite-phase-pulse generating direction to a horizontal pulse for driving a deflection yoke, the output wire 22 is connected with a Braun tube via an anode cap.

7. 发明专利

JP2001176741A FLYBACK TRANSFORMER 失效
公开(公告)号：JP2001176741A
公开(公告)日：2001-06-29
申请号：JP35810999
申请日：1999-12-16
申请人： HITACHI MEDIA ELECTRON KK
发明人： KIKUCHI AKIRA , MOCHIDA HIDEYUKI , SUGAWARA YOSHIHIKO , SUGANO MITSUHIRO , SATO TERUAKI
IPC分类号： H01F38/42 , H01F19/04
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable flyback transformer which can reduce the temperature rise of its primary coil as much as possible. SOLUTION: This flyback transformer is constituted, in such a way that a hole section 3 is formed inside a primary coil bobbin 2, and a plurality of rids 5 are provided on the inner peripheral surface of the hole section 3. Then a core 1 is inserted into the space inside the ribs 5, so as to form air layers 7 between the hole section 3 and core 1.

8. 发明专利

JPH1050539A FLYBACK TRANSFORMER 失效
公开(公告)号：JPH1050539A
公开(公告)日：1998-02-20
申请号：JP20712996
申请日：1996-08-06
申请人： HITACHI MEDIA ELECTRON KK
发明人： SUGAWARA YOSHIHIKO , MOCHIDA HIDEYUKI
IPC分类号： H01F38/42
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive and handy flyback transformer, capable of reducing an alternate electrical field, without employing an expensive external capacitor insulated by armor case and injection resin mold. SOLUTION: A secondary high-voltage coil 6 is divided into a plurality of coils and a high-voltage rectifying diode 3 is connected to each high-voltage coil 6 in series. In the flyback transformer in which a built-in high voltage capacitor 2 is connected to the cathode of the last stage high voltage rectifying diode 3d, the final stage high-voltage coil 6e is wound reversely and the reverse pulse generated from the reversely wound high-voltage coil 6e is superposed on the cathode of the last stage high-voltage rectifying diode 3d through an insulator 21 interjacent between the high-voltage coil 6e and the adjacent high- voltage coil 6f.

9. 发明专利

JPH09129462A FLYBACK TRANSFORMER 失效
公开(公告)号：JPH09129462A
公开(公告)日：1997-05-16
申请号：JP28360295
申请日：1995-10-31
申请人： HITACHI MEDIA ELECTRON KK
发明人： SUGAWARA YOSHIHIKO , MOCHIDA HIDEYUKI
IPC分类号： H01F27/40 , H01F38/42 , H02M3/335
摘要： PROBLEM TO BE SOLVED: To provide a low-cost high-voltage flyback transformer, which is easy to handle and reduces alternating electric field without using expensive high-voltage capacitors that are molded and encased. SOLUTION: A flyback transformer is provided with separate secondary high-voltage coils (6a-6d) connected respectively in series with high-voltage diodes (3a-3d), and the diode (3d) on the final stage is connected to a high- voltage cap (2). An outermost high-voltage coil (6e) is connected in reverse so that inverted pulses may be superposed on the cathode side of the diode (3d).

10. 发明专利

JP2001176733A TRANSFORMER 失效
公开(公告)号：JP2001176733A
公开(公告)日：2001-06-29
申请号：JP35811399
申请日：1999-12-16
申请人： HITACHI MEDIA ELECTRON KK
发明人： SUGAWARA YOSHIHIKO , MOCHIDA HIDEYUKI , GOTO TAKAHIKO , KIKUCHI AKIRA
IPC分类号： H01F3/10 , H01F27/24 , H01F27/38
摘要： PROBLEM TO BE SOLVED: To provide a transformer which can maintain a high saturation margin magnetic flux density, even when a small-sized, light and low-price magnetic substance is used instead of a high-price magnetic substance, having a large cross-sectional area. SOLUTION: A primary-side coil 2 and a secondary-side coil 4 are wound around a magnetic substance 1, thereby composing a magnetic circuit in the transformer. A ferromagnetic substance 5, which generates a magnetic flux by itself, is interposed in a magnetic circuit so as to flow the magnetic flux generated by the ferromagnetic substance 5 in a direction reverse to a magnetic flux of direct current generated in the magnetic circuit.

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