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1. 发明专利

JP2001217091A FLUORESCENT LAMP DEVICE 失效
公开(公告)号：JP2001217091A
公开(公告)日：2001-08-10
申请号：JP2000023685
申请日：2000-02-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： WAKE ATSUO
IPC分类号： H05B41/24
摘要： PROBLEM TO BE SOLVED: To provide a fluorescent lamp device which can realize a fast start of light flux without a non-emission phenomenon at the center of the light emitting tube under a low temperature. SOLUTION: A fluorescent lamp 1 with filament coils 5 at both ends, and a high-frequency inverter 2 with a control circuit 8 which is a means of preheat control for making the fluorescent lamp 1 to preheated start by conducting a preheat current to the filament coil 5 are provided. The preheat control means is so constructed to pass through the filament coil 5 an electric heating current larger than that through the coil 5 at stably lit time of the fluorescent lamp 1.

2. 发明专利

JPH05121179A DISCHARGE LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH05121179A
公开(公告)日：1993-05-18
申请号：JP28013991
申请日：1991-10-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MIYAZAKI MITSUHARU , WAKE ATSUO , KAMIYA TAKAYUKI , OZAWA MASATAKA
IPC分类号： H05B41/18 , H05B41/24
摘要： PURPOSE:To prevent the flame failure and half-wave lighting at the initial stage of lighting and quickly attain the stable arc discharge state in a discharge lamp lighting device. CONSTITUTION:When a power circuit 1 is operated, a timer circuit 10 outputs an operation signal to a drive circuit 9, and it outputs a stop signal to the drive circuit 9 when a fixed time elapses after a discharge lamp 4 starts an electric discharge. A high-voltage pulse generating circuit 5 is continuously operated for the fixed time after the discharge lamp 4 starts the electric discharge, then the operation is stopped. The half-wave discharge and flame failure of the discharge lamp 4 immediately after it is lighted can be prevented, and it can be quickly shifted to the stable arc discharge state.

3. 发明专利

JPH0567496A DISCHARGE LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH0567496A
公开(公告)日：1993-03-19
申请号：JP22775391
申请日：1991-09-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OZAWA MASATAKA , KAMIYA TAKAYUKI , KOYAMA KAZUTAKA , HORII SHIGERU , MIYAZAKI MITSUHARU , WAKE ATSUO
IPC分类号： H05B41/16 , H05B41/231 , H05B41/282
摘要： PURPOSE:To rise light output speedily regardless of a lighting or lights-out condition, and also prevent the excessive light output in a discharge lamp lighting device to control lighting of a discharge lamp. CONSTITUTION:When a direct current electric power supply 1 is turned on, an inverter circuit 2 oscillates. When output of the direct current electric power supply 1 reaches prescribe voltage, a lighting control circuit 8 receives output of a direct current voltage detecting circuit 7, and operates a startup circuit 4. Thereby, a discharge lamp 5 is started, and when an electric current is flowed to the lamp, voltage on both ends of the discharge lamp 5 is lowered, and voltage of the direct current electric power supply 1 is also lowered. From this voltage drop, a direct current voltage detecting circuit 6 detects the fact that the discharge lamp 5 is started, and stops operation of the startup circuit 4. After the discharge lamp 5 is started, the lighting control circuit 8 controls the output of the direct current electric power supply 1 according to a lighting time and a lights-out time, and the output immediately after the lamp is started is increased as the lights-out time becomes long, and after the lamp is once started, the output is decreased with the lapse of time, and rated lighting can be carried out soon.

4. 发明专利

JPH04342989A DISCHARGE LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH04342989A
公开(公告)日：1992-11-30
申请号：JP11599491
申请日：1991-05-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MIYAZAKI MITSUHARU , HORII SHIGERU , OZAWA MASATAKA , WAKE ATSUO , KAMIYA TAKAYUKI , KOYAMA KAZUTAKA
IPC分类号： H05B41/24
摘要： PURPOSE:To accomplish a small and safe discharge lamp lighting device with lighting operation controlled through control of the lamp power of discharge lamp, wherein the discharge lamp is prevented from being continuously fed with a lamp power over the rating. CONSTITUTION:As a drive motive for discharge lamp, a power circuit 1 is constructed from a DC power supply 2 and an inverter circuit 6. As a load circuit for this power circuit 1, a discharge lamp 9, a capacitor 10 to sense its voltage, and a resistance 11 to sense the current through the lamp 9 are set in connection through a series resonant circuitry of a choke coil 7 and capacitor 8. The output from these capacitor 10 and resistance 11 is fed to a multiplier device 14 to constitute a sensing circuit 13. The output of this sensing circuit 13 is compared by a comparator circuit 18 in a protection circuit 16 with the reference value given by a reference value setting circuit 15. On the basis of the output from this protection circuit, a lighting control circuit 15 controls the inverter circuit 6, and the power fed to the discharge lamp 9 is controlled under the specified level.

5. 发明专利

JPH04274197A DISCHARGE LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH04274197A
公开(公告)日：1992-09-30
申请号：JP3408591
申请日：1991-02-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAMIYA TAKAYUKI , OZAWA MASATAKA , WAKE ATSUO , MIYAZAKI MITSUHARU , KOYAMA KAZUTAKA
IPC分类号： H05B41/24 , H05B41/282
摘要： PURPOSE:To stably light a lamp with a low-frequency rectangular wave current even for a choke coil of a small inductance in series with a discharge lamp by utilizing a current limiting function of a DC power supply. CONSTITUTION:A current limiting function is given to a DC power supply circuit 18 to light a discharge lamp 16 stationarily with low frequency rectangular waves. In a period during which all the witch elements of a full bridge inverter circuit 19 connected with an output terminal of the DC power supply circuit 18 get off, an output voltage of the DC power supply circuit 18 is increased up to a re-ignition voltage of the discharge lamp 16 or more using an energy accumulated at choke coils 6, 15 for lighting it stably. At the ime of starting, an output current limit value for the DC power supply circuit is increased, and a lighting frequency is set higher then that at a stationary time, so a large current is supplied to the discharge lamp 16 while the current is limited by the choke coil 15 to let stand-up of light speedy.

6. 发明专利

JPH0479196A LIGHTING DEVICE FOR DISCHARGE LAMP 失效
公开(公告)号：JPH0479196A
公开(公告)日：1992-03-12
申请号：JP19535190
申请日：1990-07-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： WAKE ATSUO , OZAWA MASATAKA
IPC分类号： H05B41/24 , H05B41/18
摘要： PURPOSE:To better the starting performance of a discharge lamp by applying a power supply output voltage to the primary winding of a transformer whose secondary winding functions as a current limiting obstruction, and generating a voltage in the secondary winding so as to boost the voltage to be supplied to the discharge lamp in its start. CONSTITUTION:The primary winding of a transformer 12 is connected to the secondary winding of a transformer 22 in parallel so that the output voltage of a constant current push-pull inverter circuit 17 which is generated in the secondary winding of the transformer 22 is applied to both sides of the primary winding of the transformer 12. Then not only the output voltage of the constant current push-pull inverter circuit 17 divided in accordance with the impedance that the secondary winding of the transformer 12 originally has, but also a voltage which is boosted in accordance with the turn ratio of the primary and the secondary winding of the transformer 12 are superimposed on the secondary winding of the transformer 12. Thus, the relative output voltage of a power supply unit 11 is boosted and supplied to a discharge lamp 14 during its start so that a shift from glow discharge to arc discharge can be performed smoothly and stable lighting can be facilitated.

7. 发明专利

JPH0417297A LAMP VOLTAGE DETECTING DEVICE 失效
公开(公告)号：JPH0417297A
公开(公告)日：1992-01-22
申请号：JP12095490
申请日：1990-05-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OZAWA MASATAKA , HORII SHIGERU , ITO KAZUHIKO , MIYAZAKI MITSUHARU , WAKE ATSUO , KAMIYA TAKAYUKI , YOSHIKAWA NOBUHISA , NARIAMA MASAYOSHI , SAITO TAKESHI
IPC分类号： G01R19/165 , H02M7/48 , H05B41/16 , H05B41/24
摘要： PURPOSE:To get an inverter operating in spite of a configuration under which the earth line of the inverter circuit is floated above the ground by converting a differential voltage across both terminals a discharge lamp detected by a lamp voltage detector circuit into DC voltage through a DC voltage detector circuit to use the voltage for controlling the inverter circuit. CONSTITUTION:A lamp voltage detector circuit 6, which detects differential voltage rising across both terminals of a discharge lamp 5 which is driven by an inverter circuit 2, and a DC voltage detector circuit 8, which consists of a differential voltage amplifying part to amplify the detected differential voltage and a rectifying part to rectify the output and obtain DC voltage, are equipped. The lamp voltage detector circuit 6 detects a differential voltage generated across both terminals of the discharge lamp 5, then converts it into DC voltage through the DC voltage detector circuit 8. Thus, the DC voltage can be obtained as a signal common to the earth line of the inverter circuit 2 even though the earth line of the inverter circuit 2 is floated above the ground.

8. 发明专利

JPH01255197A DISCHARGE LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH01255197A
公开(公告)日：1989-10-12
申请号：JP8333688
申请日：1988-04-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： WAKE ATSUO , OTAKE SHIRO , OZAWA MASATAKA
IPC分类号： H05B41/18
摘要： PURPOSE:To avoid an overload input at the time of normal starting and inhibit deterioration of a spark gap so as to prevent life-shortening of a lighting device by changing the condition of a pulse voltage applied to a discharge lamp at the time of its starting and re-starting. CONSTITUTION:In a normal temperature state, a variable resistant element 18 has a resistant value capable of generating a pulse number required for normally starting a discharge lamp, while a shape memory alloy 16 maintains such a shape that the distance between electrodes 14 and 15 of a spark gap 13 generates a pulse voltage required for normally starting the lamp. When the lamp is at a high temperature, the element 18 and the alloy 16 detect heat, respectively, so that the resistant value of the element 18 becomes smaller so as to decrease the constant at the time of charging of a charging circuit 17, while the alloy 16 changes its form so as to widen the distance between the electrodes 14 and 15 of the spark gap 13. Therefore, this can prevent an overload input at the time of normal starting, thereby inhibiting deterioration of the spark gap so as to prevent life-shortening of a lighting device.

9. 发明专利

JP2004193025A Single base type fluorescent lamp 审中-公开
公开(公告)号：JP2004193025A
公开(公告)日：2004-07-08
申请号：JP2002361430
申请日：2002-12-12
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： WAKE ATSUO , WAKAMIYA AKIHITO , CHOKAI EIICHIRO
IPC分类号： H01J61/72 , H01J61/32
摘要： PROBLEM TO BE SOLVED: To provide a single base type fluorescent lamp with a lamp current per unit cross section area is ≥0.2 A/cm
2 , excellent rising of optical output immediately after starting and an optical response in modulating light by realizing the improvement of luminous efficiency in a high temperature area without using amalgam.
SOLUTION: Two straight tube bulbs having a tube inner diameter D of 12-18 mm and an overall length L of 200-300 mm are disposed in parallel, points near one end parts of these two straight tube bulbs are connected, electrodes (1) are sealed in the other end parts respectively, and the single base type fluorescent lamp provided with a transparent container (2) having a discharge path folded-back and bent is lighted at a high-frequency wave with rated lamp power of 20-25 W. The coldest part is set so that the length F from the tip end of one end part where the straight tube bulb is sealed to the center of the connected part to satisfy a relation of 1.25 D

10. 发明专利

JP2001229877A FLUORESCENT LAMP 失效
公开(公告)号：JP2001229877A
公开(公告)日：2001-08-24
申请号：JP2000040616
申请日：2000-02-18
申请人： MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA ELECTRONICS CORP
发明人： INAGAKI FUMIHIRO , WAKE ATSUO , OGA TOSHIKI , IWAMA KATSUAKI
IPC分类号： H01J61/28
摘要： PROBLEM TO BE SOLVED: To prevent deterioration in luminous efficiency and increasing work efficiency. SOLUTION: The fluorescent lamp is equipped with the following elements; an exhaust tube mounted on the terminal of the arc tube 1, a container 9 housed in the exhaust tube 4 and having amalgam 8 within, a means for controlling the position of the container 9 in the exhaust tube 4 and a means which is provided between the tip of the exhaust tube 4 and the container 9 for preventing the contact between the container 9 and the tip of the exhaust tube 4. The container 9 is equipped with an opening part 10 through which mercury gas is transferred and a means for preventing the molten amalgam 8 from leaking through the opening part 10 to the outside of the container 9.

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