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11. 发明专利

JPH09231916A CATHODE RAY TUBE, DEFLECTION ABERRATION CORRECTING MEMBER, ITS MANUFACTURE AND IMAGE DISPLAYING DEVICE 失效
公开(公告)号：JPH09231916A
公开(公告)日：1997-09-05
申请号：JP3967396
申请日：1996-02-27
申请人： HITACHI LTD , HITACHI DEVICE ENG , HITACHI ELECTRON DEVICES KK
发明人： MISONO MASAYOSHI , TOJO TSUTOMU , TAMURA HIROYUKI , SUGIYAMA MITSUHIRO
IPC分类号： H01J9/14 , H01J29/51 , H01J29/56
摘要： PROBLEM TO BE SOLVED: To improve a focusing characteristic in a full current region of an electron beam and to attain a superior resolution by a method wherein a magnetic path formed by a deflection aberration correcting member is arranged in a deflecting magnetic field in a cathode ray tube to form a non-uniform magnetic field. SOLUTION: A deflection aberration member having a non-magnetic material and a magnetic material adhered to each other is fixed to an anode 4 in a deflecting magnetic field of a cathode ray tube. An electron beam 62 passing through a part spaced apart from a central lotus of an electron beam during deflection has a large amount of dispersion as compared with that of an electron beam 63 under a non-deflected state while it passes through the magnetic field and an entire lotus is also moved away from a central lotus of the electron beam under a non-deflected state. In addition, a degree of changing in the lotus is large on a side spaced apart from the central lotus of the electron beam in a non-deflected state. A non-uniform magnetic field corresponding to such an amount of deflection is formed in a deflected magnetic field, thereby it is possible to attain an image displaying device in which a dispersion action of the electron beam is accelerated in response to an amount of deflection of the electron beam, the deflection deviation correction can be attained in the case that the deflection aberration may enforce a converging action of the electron beam.

12. 发明专利

JPH10208662A COLOR CATHODE-RAY TUBE 失效
公开(公告)号：JPH10208662A
公开(公告)日：1998-08-07
申请号：JP780197
申请日：1997-01-20
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： TOJO TSUTOMU , TAMURA HIROYUKI
IPC分类号： H01J29/50 , H01J29/56
摘要： PROBLEM TO BE SOLVED: To provide a color cathode-ray tube furnishing an electron gun which can maintain the display quality even in a high deflection frequency condition, as well as can obtain a good resolution in the whole area of the screen, without feeding a dynamic voltage particularly. SOLUTION: This cathode-ray tube furnishes at least an electron gun consisting of plural electrodes, and to emit three electron beams arranged in-line, a deflection device, and a phosphor screen. In this case, a deflection aberration correcting part 39 to change a part of the deflection magnetic field distribution by providing a magnetic piece in the deflection field formed by the deflection device so as to correct the deflection aberration, and at least one of the parts 37 of nonmagnetic material to form a closed loop electrically observed in the direction vertical to the in-line at the position corresponding to the electron beam positioning the side of three electron beams arranged in-line are provided, and further-more, the parts 36 of magnetic material crossing to the in-line are provided at both sides of at least the electron beam positioning at the side, of the three electron beams.

13. 发明专利

JPH1092339A CATHODE RAY TUBE 失效
公开(公告)号：JPH1092339A
公开(公告)日：1998-04-10
申请号：JP24065996
申请日：1996-09-11
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： MISONO MASAYOSHI , TAMURA HIROYUKI , TOJO TSUTOMU
IPC分类号： H01J29/50 , H01J29/56
摘要： PROBLEM TO BE SOLVED: To allow deflection scanning with high frequency, improving focusing property all over a screen and still an electron beam current area, showing high resolution and reducing deflection aberration due to eddy current during high-speed scanning. SOLUTION: A deflection aberration collecting device 39 formed with magnetic strips 39b held by non-magnetic thin plate 39a is set up on an electrode (a shield cup 30, e.g.) located in a deflecting magnetic field. Cutouts 39c, 39d and/or 30c, 30d perpendicular to the in-line direction and in the tube-axial direction are formed in the non-magnetic thin plate 39a corresponding to a center beam and/or the electrode on which the deflection aberration collecting device 39 is mounted to restrict eddy curent due to the deflecting magnetic field.

14. 发明专利

JPH1092338A CATHODE RAY TUBE 失效
公开(公告)号：JPH1092338A
公开(公告)日：1998-04-10
申请号：JP24061196
申请日：1996-09-11
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： MISONO MASAYOSHI , TOJO TSUTOMU , TAMURA HIROYUKI
IPC分类号： H01J29/50 , H01J29/56
摘要： PROBLEM TO BE SOLVED: To provide a cathode ray tube with an electron gun as being capable of reducing deflection aberration, improving focusing property all over a screen and still an electron beam current area without specially supplying dynamic focusing voltage, showing high resolution and reducing moires in a small current area. SOLUTION: A deflection aberration correcting magnetic pole device 39 formed of combined materials with a non-magnetic material 390 and a magnetic material 391 welded abutting each other is set up in a deflecting magnetic field for a cathode ray tube which has at least an electron gun consisting of plural electrodes, a deflector and a fluorescent screen. With magnetic strips constituting the deflection aberration correcting magnetic pole device 39, a magnetic field to change part of deflecting field distribution is formed to correct the deflection aberration of electron beam.

15. 发明专利

JPH09119701A AIR CONDITIONER 失效
公开(公告)号：JPH09119701A
公开(公告)日：1997-05-06
申请号：JP27738995
申请日：1995-10-25
申请人： HITACHI LTD
发明人： WAKUI TOYOMITSU , ONO SATOSHI , TERAUCHI HIDEKI , IWASAKI MASAYUKI , TAMURA HIROYUKI
IPC分类号： F24F11/02
摘要： PROBLEM TO BE SOLVED: To prevent shortening of the life of a circuit component and the damage to the component at the time of abnormal power source voltage by providing a circuit for detecting the voltage level of a commercial power source. SOLUTION: A commercial power source 9 is received by an indoor unit 13, and supplied to an outdoor unit via a connecting line 18. An outdoor controller 11 controls the outdoor unit 14 through a connecting line 19 according to the command of an indoor controller 10. A power source voltage level detector 15 is provided at the line 18, and converts the received commercial power to a DC via its rectifying diode 20 and a smoothing capacitor 21. The DC voltage obtained by the rectification is judged at the voltage level of the power 9 in proportional relation with the voltage of the power source 9. That is, the DC voltage is divided by the voltage divider 22 of the microcomputer 16 in the controller 11, and when it is the input of the criterion value or less of the microcomputer 16, the operation of an air conditioner is inhibited to prevent the decrease in the life of the circuit component and the damage of the component at the time of erroneous connection of the power source.

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