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1. 发明专利

JPH06109778A CHARGE INDICATOR 失效
公开(公告)号：JPH06109778A
公开(公告)日：1994-04-22
申请号：JP27767292
申请日：1992-09-24
申请人： TAKAOKA ELECTRIC MFG CO LTD , KYUSHU ELECTRIC POWER
发明人： KAMURA NOBUYUKI , DAICHO YOSHIO , HORI ISAO , YAMAMOTO MASANORI
IPC分类号： G01R19/155
摘要： PURPOSE:To provide a charge indicator without any need to stop operation for a mounting and demounting work, when the indicator is provided and used at a grounding side such as the rack of an LS for specially high voltage and the lower side of bushing for an OCB and a transformer, while allowing the easy observation of display contents, and showing information properly coping with the live and dead lines of a high voltage section, when the indicator is mounted at a grounding side. CONSTITUTION:A conventional charge indicator circuit comprising a collecting board 2, an AC-DC conversion circuit 3, a liquid crystal display drive circuit 4 and a liquid crystal element 5, is additionally provided with a voltage discrimination circuit 6 allowing a threshold value to be preset, and a switching circuit 7, respectively operating to actuate a liquid crystal display, only when circuit voltage rises to and above the preset threshold value, thereby constituting a charge indicator 11.

2. 发明专利

JPH04318473A CHARGING DISPLAY DEVICE 失效
公开(公告)号：JPH04318473A
公开(公告)日：1992-11-10
申请号：JP11068891
申请日：1991-04-17
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： DAICHO YOSHIO
IPC分类号： G01R19/155 , G01R19/165
摘要： PURPOSE:To enable a force for calling one's attention to be increased drastically by connecting a high-input impedance amplification circuit where a battery' is added to a power supply to a frequency-dividing output of a blinking drive portion and then driving both or either of an LED and a buzzer for performing blinking display along with a liquid crystal element. CONSTITUTION:A frequency-divided output of a blinking drive portion 2 is taken from a point (a) and is applied to a base of a transistor 65 through CMOS inverters 63 and 64 for synchronizing an operation of an LED 8 as a blinking display of a liquid crystal element 3. A negative electrode of a battery 7 is connected to a point (b) through a resistor 61 with 1-2MOMEGA. An amplification circuit 6 drives the LED 8 or the LED 8 and a buzzer 6. A switch 10 is a selection switch for contact. When contacts cd is connected before use, voltages of the circuit 6, the LED 8, and the battery 7 can be checked. On the other hand, when a contact ce is connected. only the LED 8 operates. Then, when a contact cf is connected, the LED 8 and the buzzer 9 operate simultaneously, thus enabling a force for calling one's attention to be further increased.

3. 发明专利

JPH02214892A NO-VOLTAGE DISPLAY TYPE ELECTRO-MECHANICAL DISPLAY DEVICE 失效
公开(公告)号：JPH02214892A
公开(公告)日：1990-08-27
申请号：JP3510289
申请日：1989-02-16
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： HORI ISAO , DAICHO YOSHIO , KAMETANI YASUNOBU
IPC分类号： G01D7/00 , G01R19/155 , G02F1/133 , G09F9/00 , G09G3/18
摘要： PURPOSE:To distinguish between a non-display state due to a power failure and a non-display state due to a device failure by providing a no-voltage detecting and a driving circuit which operate by a different power failure to detect whether or not there is the output of an electric field detection part and making a display even in the case of the power failure. CONSTITUTION:The electro-mechanical display device 10 is provided with a no-voltage detection part 5 which inputs the output of the electric field detection part 1 and the reference voltage of an auxiliary power source 3 differentially and the driving circuit part 6 which operates by the auxiliary power source 3 as well and when a conductor is in a power failure state, the no-voltage display part 43 of a liquid crystal display element 4 is driven with its output. Thus, both a voltage application state and the power failure state are displayed to distinguish between the power failure state of electric equipment or a line and the fault of the electro-mechanical display, so it is accurately decided whether the electric equipment or conductor is active or not to improve the safety of the maintenance operation for high-voltage electric facilities more.

4. 发明专利

JPH0679041B2 失效
公开(公告)号：JPH0679041B2
公开(公告)日：1994-10-05
申请号：JP27287386
申请日：1986-11-18
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： KAMETANI YASUNOBU , DAICHO YOSHIO , CHINAI YOSHIHARU , SANO HIROSHI , KATO MATSUKICHI
IPC分类号： G01R19/165 , G01R19/155 , G09F9/00

5. 发明专利

JPH04317517A POWER SUPPLY CIRCUIT FOR CHARGED PART 失效
公开(公告)号：JPH04317517A
公开(公告)日：1992-11-09
申请号：JP11074291
申请日：1991-04-17
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： DAICHO YOSHIO
IPC分类号： G01R31/00 , H02J1/00 , H02J50/00 , H02J50/05
摘要： PURPOSE:To obtain a plurality of DC voltages suitable for respective load circuits effectively when the energy of an electric field generated in a current collecting board is employed as a power supply for various meters at a charged part. CONSTITUTION:An A/D converting circuit 71 is connected between current collecting boards 1, 2 through a capacitor 61 connected with the current collecting board 1 in a first circuit 11 to feed a DC voltage to a load circuit 81 thus constituting a first output circuit. A similarly constituted second output circuit is connected with the current collecting boards 1, 2 in parallel with the first output circuit in a second circuit 12. In such a manner, a plurality of output circuits are arranged in parallel to constitute a power supply circuit 6 for charged part.

6. 发明专利

JPH04318699A THERMAL SIGNAL TRANSMITTER 失效
公开(公告)号：JPH04318699A
公开(公告)日：1992-11-10
申请号：JP11073591
申请日：1991-04-17
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： DAICHO YOSHIO , KIMATA HIDESHI
IPC分类号： G01K1/02 , G08C17/00 , G08C19/00
摘要： PURPOSE:To unnecessiate a particular power supply for a thermal signal transmitting circuit by preparing the shape and size of a current collector so that power generated in the current collector by the electric field in the neighborhood of a current charging section during the hot line work can be large enough to drive a thermal signal transmission circuit. CONSTITUTION:During the hot line work, when AC voltage V0 is applied between a current charging section 6 and ground 7, an AC electric field is generated in the neighborhood of the current charging section 6, between two current collector boards 1 and 2 an AC voltage Vp is induced, and electric field energy Ep is accumulated therebetween. Further, the electric field energy accumulated between two current collector boards is supplied as power for driving a thermal signal transmission circuit 3. Furthermore, the thermal signal transmission circuit 3 deals with temperature detected by a thermal sensor 4, converts the temperature into a thermal information signal such as temperature, temperature rise, temperature abnormality alarm, and to transmit the signal to a signal receiving unit 5. In this case, the electrostatic capacity Cs between current collector board 1, 2 and ground 7 and the electrostatic capacity Cp between current collector boards 1 and 2 are set in advance so that the magnitude of electric field energy Ep can meet the power required to drive the thermal signal transmission circuit 3.

7. 发明专利

JPH04318592A TEMPERATURE DISPLAY DEVICE 失效
公开(公告)号：JPH04318592A
公开(公告)日：1992-11-10
申请号：JP11073991
申请日：1991-04-17
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： KIMATA HIDESHI , DAICHO YOSHIO
IPC分类号： G01K7/00 , G01K7/02 , G01K7/24 , G01R31/02 , G09F9/00
摘要： PURPOSE:To constitute the temperature display device which does not use any special power source such as a battery so as to measure temperature nearby a charging part and operates by receiving the energy of an electric field produced with the AC voltage of the charging part in a hot-line state. CONSTITUTION:Two current collection plates 1 and 2 are provided nearby the charging part 6 so as to produce electric power of necessary level between the current collection plates 1 and 2 with an AC electric field produced at the periphery of the charging part 6 in the hot-line state. This electric power is supplied to a temperature display circuit 3 and temperature detected by a temperature sensor 4 is displayed on a liquid crystal element 5.

8. 发明专利

JPH01257272A VOLTAGE APPLICATION DISPLAY DEVICE FOR THREE-PHASE LOW VOLTAGE ELECTRIC CABLE 失效
公开(公告)号：JPH01257272A
公开(公告)日：1989-10-13
申请号：JP8316088
申请日：1988-04-06
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： KAMETANI YASUNOBU , HORI ISAO , DAICHO YOSHIO
IPC分类号： G01R19/155 , G09F9/00
摘要： PURPOSE:To simplify attaching and to improve reliability, by forming a unitary body with a liquid crystal display element and a current collecting plate to constitute the main body of a display device. CONSTITUTION:A display part 15 including a liquid crystal display element 18 and a current collecting plate 13 are formed a unitary body to constitute a main body 19 of a display device. The current collecting plate 13 comprises a material having elasticity and conductivity and also serves as the attaching tool of the display part 15. The element 18 is housed in a display case 15a having a display window 15b in said display part 15. An electrode terminal 11 of the element 18 is connected to the current collecting plate 13 through a screw terminal 11a. An electrode terminal 12 of the element 18 is connected to a socket terminal 12a. Since only one current collecting plate 13 is attached to the display main body 19, the current collecting plate 13 is not erroneously attached. Since the current collecting plate 13 also serves as the attaching tool of the display part 15 and forms a unitary body together with the main body 19, attachment is simple, reliability is improved and the cost can be reduced.

9. 发明专利

JPH04317516A POWER SUPPLY CIRCUIT FOR CHARGED PART 失效
公开(公告)号：JPH04317516A
公开(公告)日：1992-11-09
申请号：JP11074091
申请日：1991-04-17
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： DAICHO YOSHIO
IPC分类号： G01R31/00 , H02J1/00 , H02J50/00 , H02J50/05
摘要： PURPOSE:To utilize power effectively when the energy of electric field produced in a current collecting board is employed as a power supply for various meters at a charged part. CONSTITUTION:Current collecting boards 1, 2 are connected with an A/D converter 31 provided with a step-down switching DC-DC converter 36 on the output side thus constituting a power supply circuit 6 for charged part.

10. 发明专利

JPH0353284A TRANSMISSION DISPLAY TYPE CHARGING INDICATOR 失效
公开(公告)号：JPH0353284A
公开(公告)日：1991-03-07
申请号：JP18747189
申请日：1989-07-21
申请人： TAKAOKA ELECTRIC MFG CO LTD
发明人： DAICHO YOSHIO
IPC分类号： G01D7/00 , G01R19/155 , G02F1/133 , G09F9/00 , H02G1/02
摘要： PURPOSE:To brighten the liquid crystal display surface by utilizing the brightness of the outside for bringing about a back light state to a charging indicator, for an illumination light source of a liquid crystal display. CONSTITUTION:In a charging indicator 20 for displaying a state that a voltage is applied to an electric wire 11, a transmission type display is executed by utilizing an external light led into the charging indicator 20 as an illumination light source. That is, it goes into the charging indicator 20 through a transparent back case 23, scattered by a semi-transmission plate 7 and becomes a uniform light, passes through a transparent ground side current collecting plate 51 and a transparent substrate 50 and reaches the back of a semi-transmission type liquid crystal element 48. The semi-transmisstion type liquid crystal element 48 scatters this light and brightens brightly the liquid crystal display surface, and also, makes a non-transmission part of light which becomes a display pattern conspicuous. In such a way, the liquid crystal display contents of the charging indicator 20 attached to a high voltage overhead line 11 can be discriminated easily.

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