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51. 发明专利

JPH1140426A INDUCTANCE DEVICE 失效
公开(公告)号：JPH1140426A
公开(公告)日：1999-02-12
申请号：JP19467097
申请日：1997-07-18
申请人： TDK CORP
发明人： WAZAKI MASARU , SHIGETA MASAO , SHIBATA KAZUHIKO , KAJITA ASAKO , ITO KAZUYUKI
IPC分类号： H01F27/255 , H01F17/06 , H01F27/29 , H01F30/00
摘要： PROBLEM TO BE SOLVED: To provide an inductance device by which a high inductance can be obtained under a large amount of current and the connection resistance to a pattern conductor can be reduced. SOLUTION: A first magnetic core 1 and a second magnetic core 2 exhibiting different magnetic properties are assembled with surface contact between at least one face of each. The first magnetic core 1 has at least one groove 11 on its contact face. The groove 11 is open at both sides of the magnetic core. A conductor 3 is placed inside the groove 11 and its major part is surrounded by the first and second magnetic cores 1 and 2. Ends of the conductor 3 which are led out of the groove 11 are provided with terminals 301 and 302 for connection to outside. The terminals 301 and 302 have a width W2 larger than a width W 1 of a major part 300.

52. 发明专利

JPH10147174A VEHICLE ILLUMINATION DEVICE 失效
公开(公告)号：JPH10147174A
公开(公告)日：1998-06-02
申请号：JP30794896
申请日：1996-11-19
申请人： TDK CORP
发明人： WAZAKI MASARU , SUNAMI RIYOUJI
IPC分类号： B60Q1/00 , B60Q1/02 , F21S8/10
摘要： PROBLEM TO BE SOLVED: To provide a small-sized vehicle illumination device using a high voltage discharge lamp by contriving the heat treating measure for a turn-on device for the high voltage discharge lamp. SOLUTION: In a vehicle illumination device composed of a high voltage discharge lamp 2, a turn-on device 31 for this lamp 2, and a lamp casing 1 for accommodating the lamp 2 and the turn-on device 31, a voltage regulating circuit as the turn-on device 31 incorporated in an exclusive casing composed of a resin casing part 31A and a metal casing part 32A which are fitted with each other. The resin casing part 31A is located at a position where it blocks radiation heat from the lamp 2 so as to protect the turn-on device from the radiation heat.

53. 发明专利

JPH08330083A DISCHARGE LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH08330083A
公开(公告)日：1996-12-13
申请号：JP13497395
申请日：1995-06-01
申请人： TDK CORP
发明人： WAZAKI MASARU , KURIHARA MAKOTO , TAKAYANAGI YOSHINOBU , IMAI KATSUNORI
IPC分类号： H05B41/24
摘要： PURPOSE: To simplify a circuit construction, reduce electric power loss, heighten reliability by providing a residual charge release means composed of a series circuit of a rectify element and a switch operating in a dead time period in which a switching element becomes off. CONSTITUTION: At the discharge time of a residual charge produced at the connection point of a high side drive circuit 1 and a low side drive circuit 3 of an inverter circuit, an off control switch 2 is brought into an off state, and a switching element QAH is brought into an on state. Entering the dead time period of a drive signal, a drive circuit is turned to an H level. This time, the switch 2 becomes on, and the residual charge at the middle point between the elements QAH and QBL is released within a short time. When the middle point between the elements QAH and QBL becomes the low side potential VL of the inverter circuit in the dead time period of the drive signal, a high side drive system operates taking the low side potential VL as a basis.

54. 发明专利

JPH07130483A DISCHARGE LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH07130483A
公开(公告)日：1995-05-19
申请号：JP29150693
申请日：1993-10-28
申请人： TDK CORP
发明人： WAZAKI MASARU , ITO KAZUYUKI , TAKAYANAGI YOSHINOBU
IPC分类号： H05B41/24 , H01J61/54 , H02M1/08 , H02M7/537 , H02M7/5387 , H05B41/18 , H05B41/231 , H05B41/282 , H05B41/29
摘要： PURPOSE:To make high speed drive of a trigger transformer in a trigger circuit which is provided in a discharge lamp lighting device and generates trigger pulses by using an IGBT element working in response to trigger signals. CONSTITUTION:In a trigger circuit an IGBT element Q4 for generation of trigger pulses is connected in series to the primary winding of a trigger transformer T1. A drive signal with a voltage higher than the voltage Vcc given by signal circuits Q1, Q2 driven with signaling line supply voltage Vc is impressed on the gate of this element Q4 and the element Q4 is driven in On condition. Accordingly the transformer T1 is high speed driven by the element Q4. The gate circuit of the element Q4 can be made low impedance and low loss, and the element Q4 is driven with a high gate voltage, and it is possible to generate high voltage on the secondary side of the transfornmer T1 effectively which permits constructing the transformer T1 in a small size.

55. 发明专利

JPH07122386A DISCHARGE LAMP LIGHTING APPARATUS 失效
公开(公告)号：JPH07122386A
公开(公告)日：1995-05-12
申请号：JP28983993
申请日：1993-10-27
申请人： TDK CORP
发明人： KURIHARA MAKOTO , WAZAKI MASARU
IPC分类号： H05B41/24 , H05B41/16 , H05B41/18 , H05B41/231 , H05B41/282 , H05B41/29
摘要： PURPOSE:To remarkably improve the safety with a simple structure by checking the detected signals of a current detecting means at every time of pulse generation of a generating means by a high voltage trigger and stopping the pulse generation after discharge lamp is lighted by a computer control means. CONSTITUTION:A computer control means 28 instructs high voltage trigger generating means 26, 27 to generate one high voltage trigger pulse. At every time of pulse generation, a current detection signal corresponding to the lamp current from a current detecting means 29 is checked to determine whether a discharge lamp 25 is lighted or not. In the case the lamp is not lighted, the control means 28 instructs to generate one more pulse and current detection signal is checked and in the case it is determined that lighting is done, pulse generation is immediately stopped. In this way, at every time a pulse is generated, whether lighting is done or not is determined, so that only the necessary minimum quantity of high voltage trigger is generated and safety is thus improved remarkably.

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