JP3413754B2 - Power supply device, fluorescent lamp device and lighting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device, a fluorescent lamp device, and a lighting device using N-channel and P-channel transistors.

[0002]

2. Description of the Related Art Conventionally, as a fluorescent lamp device, a light bulb type is becoming popular, and a half-bridge type inverter circuit is used in a built-in power supply device. Generally, a half bridge type inverter circuit is used to drive the inverter circuit. A current transformer is used.

In recent years, however, miniaturization has been sought, and as a configuration that does not use a current transformer, for example, on March 28, 1997, published by The Lighting Society of Japan, the 30th National Convention of the Lighting Society of Japan, 30th National Convention The configuration described on page 46 is known.

This lecture paper has a half-bridge type inverter circuit which supplies electric power to a fluorescent lamp by using a field effect transistor as a main switching element. The field effect transistor has a magnetic ballast choke at its gate. Connected to the secondary winding, the resonance circuit of the inductor and capacitor connected in series to this secondary winding, and the Zener diode to prevent simultaneous turn-on to each field effect transistor. The described discharge lamp lighting device is described.

Then, according to the voltage induced in the secondary winding of the ballast choke, the inductor and the capacitor are resonated so that the field effect transistor is alternately turned on and off to generate a high frequency alternating current to light the fluorescent lamp at a high frequency. ing.

[0006]

However, in the case of the fluorescent lamp device described in the above collection of lecture papers, a resonance circuit of an inductor and a capacitor must be provided corresponding to each transistor, and further, the resonance circuit of these resonance circuits must be provided. In order to prevent both field effect transistors from turning on at the same time due to operation, it is necessary to connect a zener diode to each field effect transistor to prevent them from turning on at the same time, which causes a problem that the circuit configuration becomes complicated. ing.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a power supply device, a fluorescent lamp device, and a lighting device having a simple circuit configuration.

[0008]

A power supply unit according to claim 1 is a half-bridge type inverter circuit having an N-channel transistor and a P-channel transistor as main switching elements; an inductor connected in series and an inductor circuit connected in series.
And the resonance circuit of the capacitor, and the resonance of this resonance circuit
More N-channel transistor gate and P-channel
Voltage is alternately applied to the gate of the transistor of the inverter circuit, and the N-channel transistor and the P-channel transistor of this inverter circuit are
Obtained by a control means for controlling the transistors of Yaneru, resonance of the inductor and capacitor of the control means
Since the N-channel transistor and the P-channel transistor are operated by the resonance of the circuit , the N-channel transistor and the P-channel transistor are respectively output at the output of the resonance circuit of the inductor and the capacitor of one control means .
The transistor can be controlled in different states and the circuit configuration can be simplified.

According to a second aspect of the present invention, in the power source apparatus according to the first aspect, the N-channel transistor is located on the high potential side, and the N-channel transistor and the N-channel transistor are provided without complicating the control means. Control the P-channel transistor.

A power supply device according to a third aspect is the power supply device according to the first or second aspect, which includes a ballast choke connected to the inverter circuit, and the control means is a secondary magnetically connected to the ballast choke. It has a winding and the voltage induced in this secondary winding causes the inductor and
And the capacitor resonate and the N-channel transistor and
Drive N- channel and P-channel transistors.
It is possible to obtain a driving power source for the N-channel transistor and the P-channel transistor with a simple circuit configuration .

[0011] Power Supply 請 Motomeko 4 in that in the power supply device of any one claim 1 <br/> to 3, the transistor is intended either a MOS type field effect transistor and IGBT, ON / OFF of the transistor can be easily controlled, and a simple circuit configuration can be obtained.

According to a fifth aspect of the present invention, there is no first aspect of the power supply device.
A power supply device according to any one of claims 4 to 4, wherein a full-wave rectifier
And smooth the output of this full-wave rectifier and
N-channel transistor and P-channel
A smoothing capacitor in which a series circuit of transistors is connected in parallel.
Sensor and a starter connected to one end of this smoothing capacitor
N-channel transistor of inverter circuit with resistance of
To apply voltage to the P-channel and P-channel transistors.
The output of the full-wave rectifier is
Smooth it with a capacitor and connect it via a resistor for starting the start circuit.
Inverter circuit N- channel transistor and P-channel transistor
A voltage is applied to the transistor of the channel to start.

According to a sixth aspect of the present invention, there is no first aspect of the power supply device.
5 In the power supply device according to any one of 5 above, the starting circuit includes:
Connected in series with the capacitor of the resonance circuit,
Of the gate of the transistor and the P-channel transistor
It has a capacitor that applies a voltage to the gate.
Connected to the gate of the drive circuit in series with the capacitor of the resonance circuit.
The voltage is applied by the stored capacitor.

[0014] Fluorescent lamp device according to claim 7, and a power supply device of any one claim 1 to 6; which was equipped with a fluorescent lamp which is turned on by the power supply device, any one of claims 1 to 6 Since the power supply device described in one is used, each function is exhibited.

[0015] Fluorescent lamp according to claim 8, substrate and having a mouthpiece; claims 1 accommodated in the base 6
A power supply apparatus of any one described; which was equipped with a fluorescent lamp that is lighted by an inverter attached to the substrate, even those having a die, and using the power supply device of any one claim 1 to 6 Therefore, each action is performed.

The fluorescent lamp device according to claim 9 is the following:
In the fluorescent lamp apparatus according 8, which was equipped with a glove substantially the bulb-shaped with the base body attached to the substrate, be of the bulb-type, it exhibits the respective effects.

An illumination device according to a tenth aspect comprises the fluorescent lamp device according to any one of the seventh aspect and the ninth aspect ; and a fixture main body to which the fluorescent lamp device is attached. Play.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the fluorescent lamp device of the present invention will be described below with reference to FIGS.

FIG. 1 is a circuit diagram showing a lighting circuit of an embodiment of a fluorescent lamp device, FIG. 2 is a sectional view showing the fluorescent lamp device, and FIG. 3 is a waveform diagram showing the operation.

As shown in FIG. 2, reference numeral 1 is a cover constituting a base, and this cover 1 is made of a heat-resistant synthetic resin such as PBT resin, and a cylindrical portion 2 is integrally formed at one end of this cover 1. The cylindrical portion 2 is covered with a screw-type base 3 such as an Edison type E26 type,
The base 3 is fixed to the cylindrical portion 2 by an adhesive or caulking.

The other end of the cover 1 is closed by a partition plate 4, which is made of a heat-resistant synthetic resin such as PBT resin and has a substantially circular dish shape. The partitioning board 4 has a high-frequency lighting circuit 5
The printed circuit board 6 is locked.

Further, a connection terminal 7 is projectingly provided at one end of the printed circuit board 6, and an external lead wire 11 of the saddle type fluorescent lamp FL is wound and connected. The fluorescent lamp FL may be U-shaped or W-shaped.

On the lower surface of the partition board 4, a lamp mounting cylinder portion 12 as a holding portion is integrally formed. Fluorescent lamps FL are attached to these lamp mounting tube portions 12, and the fluorescent lamps FL consume power of 15 W to 17 W and have a lamp current of 250 mA to 350 mA. The brightness is about 60 W of incandescent lamp.

In the fluorescent lamp FL, both ends 14 of a bulb 13 in which a phosphor film (not shown) is formed on the inner surface and a rare gas such as mercury and argon is enclosed are arranged in close proximity to each other, and the base 3 It is located in the direction, and has a central bent portion 15 bent in a U shape between these both end portions 14, and this central bent portion 15 is bent so as to face the same direction as both end portions 14. Has been formed. In addition, both ends of the valve 13
Triple coil filaments FL1 and FL2 are sealed in 14, and auxiliary amalgams 17 are attached to these filaments FL1 and FL2, respectively. Each pair of external lead wires 11 connected to these filaments FL1 and FL2 is led to the outside from the end 14 of the bulb 13, and is connected to the connection terminal 7 by being wound a plurality of times, for example.

Further, a thin tube 18 is projected from both ends 14 of the bulb 13, and an amalgam 19 for controlling the mercury vapor pressure during lighting is housed in at least one of the thin tubes 18.

Further, the fluorescent lamp FL is inserted from below the partition board 4 into a lamp mounting cylinder section 12 having both ends 14 formed on the partition board 4, and between the end section 14 and the lamp mounting cylinder section 12. It is fixed to the partitioning board 4 by a thermosetting adhesive 21 such as a silicone type filled in. Further, the central bent portion 15 of the fluorescent lamp FL is made of a thermosetting adhesive 22 such as a silicone-based adhesive.
Is joined to the lower surface of the partition board 4. For this reason,
The fluorescent lamp FL is fixed to the partition board 4 at a total of three places, that is, both ends 14 and the central bent portion 15.

The fluorescent lamp FL is covered with, for example, a glass globe 25, and the glass globe 25 has a cup shape with an open upper end. In addition,
The globe 25 is made of transparent or light-diffusing synthetic resin or glass, and the globe 25 may have a straight neck 26 with its upper end opening slightly smaller in diameter. Further, a meat reservoir 27 is formed continuously over the entire circumference at the opening end of the neck 26, and the meat reservoir 27 is a glove.
The melted meat was collected by heating and softening the upper end opening of 25 to form a meat reservoir. The cover 1 and the glove 25 form an envelope 28.

Further, a fluorescent lamp FL is used by using the lighting circuit 5.
When the lamp is turned on, the amount of ultraviolet rays due to an increase in the tube wall load cannot be ignored, so a diffusion film (not shown) is formed on the inner surface of the globe 25, and this diffusion film absorbs ultraviolet rays containing ultraviolet rays having a wavelength of 185 nm. Ultraviolet-absorbing inorganic fine particles such as substances are mixed in to block ultraviolet rays. In addition, since the ultraviolet absorbing inorganic fine particles have an average particle diameter of less than 1 μm, the linear transmittance is high, the visible light diffusing effect is small, and the volatile component is attached to increase the linear transmittance and the inside is transparent. Because it will
Inorganic fine particles having an average particle size of 1 μm or more are mixed for visible light scattering. Furthermore, if the average particle size is simply increased, the film surface deteriorates and creates a shadow, so the average particle size is 1 μm.
The average particle size is 1μ with 30% or more of m
You may disperse | distribute the particle size distribution widely by including 30% or more of the thing of m or more.

The neck portion 26 of such a glove 25 is
It is adapted to be inserted into a ring-shaped gap formed between the inner surface of the cover 1 and the partition board 4, and this glove 25 is covered with the inner surface of the cover 1 and the partition board by a thermosetting adhesive 31 such as silicone. It is joined to both of the four.
The thermosetting adhesive 31 may be bonded to at least one of the inner surface of the cover 1 and the partition board 4.

The thermosetting adhesive 31 is thermosetting, and for example, a silicone type is used, and the hardness at the time of curing is 20 or more and 50 or less. In the case of a silicone type, it is mixed with silicone. The hardness can be changed by adjusting the mixing ratio of the curing agent.

Further, the lighting circuit 5 is, as shown in FIG.
A capacitor C1 that constitutes a filter is connected to the commercial AC power source e through a fuse F1, and an input terminal of a full-wave rectifier 41 is connected to the capacitor C1 through an inductor L1 that constitutes a filter. A smoothing capacitor C2 is connected to the output terminal of the full-wave rectifier 41 via a resistor R1, and an instant start half-bridge type inverter circuit 42 is connected to the capacitor C2.

In the inverter circuit 42, a series circuit of a MOS type N-channel field effect transistor Q1 and a MOS type P-channel field effect transistor Q2 , which are switching elements, is connected in parallel with the capacitor C2. .

One end of each filament FL1, FL2 of the fluorescent lamp FL as a discharge lamp is connected between the drain and source of the field effect transistor Q2 via a ballast choke L2 and a DC cut capacitor C3. A starting capacitor C4 is connected between one end of the filament FL1 and the other end of the filament FL2.

A starting resistor R2 forming a starting circuit 43 is connected between the connection point of the resistor R1 and the capacitor C2 and the gate of the field effect transistor Q1 and the gate of the field effect transistor Q2. Gate of field effect transistor Q1 and gate of field effect transistor Q2 and field effect transistor Q1 and field effect transistor Q2
A series circuit of a capacitor C5 and a capacitor C6 is connected between the capacitor C5 and a connection point of the field effect transistor Q1 and the series circuit of the capacitor C6 of the control circuit 44 as a control means. A series circuit of Zener diode ZD1 and Zener diode ZD2 for gate protection of Q2 is connected. The secondary winding L3 is magnetically connected to the ballast choke L2, and the resonance circuit 46 of the inductor L4 and the capacitor C6 is connected to the secondary winding L3. further,
The resistor R3 of the starting circuit 43 is connected in parallel to the series circuit of the capacitor C5 and the inductor L4.

Further, a parallel circuit of a resistor R4 of the starting circuit 43 and a capacitor C7 for improving switching is connected between the drain and the source of the field effect transistor Q2.

Next, the operation of the above embodiment will be described.

When the lighting circuit 5 of the fluorescent lamp device is powered on, the voltage of the commercial AC power source e is full-wave rectified by the full-wave rectifier 41 and smoothed by the capacitor C2.

[0038] First, through the resistor R2 N voltage to the gate of the channel of the electric field effect <br/> result transistor Q1 is applied, the electric field effect transistor Q1 is turned on, the fluorescent lamp FL through a ballast choke L2 A voltage is applied. Then, a voltage is induced in the secondary winding L3 of the ballast choke L2, the inductor L4 and the capacitor C6 of the control circuit 44 resonate naturally, and a voltage is alternately applied to the gates of the field effect transistor Q1 and the field effect transistor Q2. The field effect transistor Q1 and the field effect transistor Q2 are turned on and off alternately,
The fluorescent lamp FL is turned on at a high frequency.

The Zener diode ZD1 and the Zener diode ZD2 protect the gates of the field effect transistor Q1 and the field effect transistor Q2.

Further, specifically, as shown in FIG. 3, the resonance circuit 46 of the capacitor C6 and the inductor L4 is connected to the gates of the field effect transistor Q1 and the field effect transistor Q2.
When a resonance voltage due to the voltage is applied and the gate voltage exceeds a certain positive value, the field effect transistor Q1 turns on and drain current flows, causing the field effect transistor Q2
Is turned off, source and drain voltages are generated, and the drain current of the field effect transistor Q2 does not flow.

On the other hand, a resonance current due to the resonance circuit 46 of the capacitor C6 and the inductor L4 is applied to the gates of the field effect transistor Q1 and the field effect transistor Q2,
When the gate voltage becomes equal to or lower than a predetermined negative value, the field effect transistor Q2 is turned on, a drain current flows, and the field effect transistor Q1 is turned off. A voltage is generated in the secondary winding L3 of the ballast choke L2 corresponding to these operations.

Further, FIG. 4 is a perspective view showing a downlight which is an illuminating device using a fluorescent lamp device. The downlight type illuminating device is provided with a cylindrical device main body 51 opening downward, A fluorescent lamp device is inserted and arranged inside 51. An Edison type socket (not shown) to which the base 3 of the fluorescent lamp device is screwed and connected is disposed on the upper inside of the instrument body 51.

Next, a fluorescent lamp device according to another embodiment will be described with reference to FIG.

FIG. 5 is a circuit diagram showing a lighting circuit of a fluorescent lamp device according to another embodiment. In the lighting circuit 5 shown in FIG. 5, N-channel and P-channel field effect transistors of the lighting circuit 5 shown in FIG. 1 are used. N channel and P channel IGBTs (Insulate Gate Bipola Tra) instead of Q1 and Q2
nsistor) Q11 and Q12 are used, and the basic operation is
The configuration is the same as that shown in FIG.

In any of the above embodiments, the N-channel and P-channel field effect transistors Q1 and Q2 or the IGBT Q11 and Q12 are used and the N-channel field effect transistor Q1 or the IGBT Q11 is connected to the high potential side. The control circuit 44 controls N-channel and P-channel field effect transistors Q1 and Q2 or IGBT Q11 and Q.
Since 12 can be controlled and one resonance circuit 46 and Zener diodes ZD1 and ZD2 for gate protection are connected, the configuration can be simplified and the size can be reduced.

[0046]

According to the power supply device of the first aspect , resonance of the resonance circuit of the inductor and the capacitor of the control means is achieved.
To operate the transistor of the transistor and the P-channel N-channel by more, of one control unit Lee
At the output of the resonant circuit of the inductor and capacitor respectively
N-channel transistor and P-channel transistor
The star can be controlled in different states, and the circuit configuration can be simplified.

According to the power supply device of the second aspect, in addition to the power supply device of the first aspect, the N-channel transistor and the P-channel transistor can be controlled without complicating the control means.

According to the power supply device of claim 3, in addition to the power supply device of claim 1 or 2, an N-channel transformer is provided.
It is possible to obtain driving power supplies for transistors and P-channel transistors with a simple circuit configuration .

[0049] According to the power supply 請 Motomeko 4, in addition to the power supply apparatus according to any one claim 1 to 3, on the transistor off can be easily controlled, it can be a simple circuit structure.

According to the power supply device of claim 5,
In addition to the power supply device according to any one of 1 to 4, full-wave rectification
For smoothing the output of the device with a smoothing capacitor and starting the startup circuit
N-channel transition of the inverter circuit through the resistance of
Applying voltage to the transistor and P-channel transistor
It can be started.

According to the power supply device of claim 6,
In addition to the power supply device according to any one of 1 to 5, a starting circuit
The gate of is connected in series with the capacitor of the resonance circuit.
A voltage can be applied by the capacitor.

According to the fluorescent lamp device of the seventh aspect ,
Since to claims 1 and using the power supply apparatus of any one described 6, it is possible to obtain the respective effects.

According to the fluorescent lamp device of the eighth aspect ,
Even in those having a die, because of the use of power supply of any one claim 1 to 6, it is possible to obtain the respective effects.

According to the fluorescent lamp device of the ninth aspect ,
In addition to the fluorescent lamp device according to the eighth aspect , even a light bulb type device can achieve the respective effects.

According to the illumination device of the tenth aspect, since the fluorescent lamp device according to any one of the seventh to ninth aspects is provided, each effect can be exhibited.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a lighting circuit of an embodiment of a fluorescent lamp device of the present invention.

FIG. 2 is a sectional view showing the same fluorescent lamp device as above.

FIG. 3 is a waveform diagram showing the same operation.

FIG. 4 is a perspective view showing the same lighting equipment.

FIG. 5 is a circuit diagram showing a lighting circuit of a fluorescent lamp device according to another embodiment of the above.

[Explanation of symbols]

1 Base 3 Cover 3 Base 25 Globe 41 Full wave rectifier 42 Inverter circuit 43 Starter circuit 44 Control circuit as control means 46 Resonance circuit 51 Instrument body C5 Capacitor C6 Capacitor FL Fluorescent lamp L2 Ballast choke L3 Secondary winding L4 Inductor Q1 N-channel field effect transistor Q2 P-channel field effect transistor Q11 N-channel IGBT Q12 P-channel IGBT R2 Start-up resistor

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-96982 (JP, A) JP-A-6-333686 (JP, A) JP-A-57-52378 (JP, A) JP-A-5- 242986 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02M 7/48 H02M 7/5387 H05B 41/24

Claims (10)

(57) [Claims] 1. A half-bridge type inverter circuit having an N-channel transistor and a P-channel transistor as main switching elements; and a resonance circuit of an inductor and a capacitor connected in series.
Has a path, and the resonance of this resonance circuit causes
Transistor gate and P-channel transistor
N Ji of the inverter circuit by applying a voltage alternately over preparative
A power supply device comprising: a control unit that controls a channel transistor and a P-channel transistor. 2. The power supply device according to claim 1, wherein the N-channel transistor is located on the high potential side. 3. A ballast choke connected to the inverter circuit, wherein the control means has a secondary winding magnetically connected to the ballast choke, and resonating with a voltage induced in the secondary winding. Circuit inductor
And N-channel transistor with capacitor resonance
3. The power supply device according to claim 1, which drives a P-channel transistor and a P-channel transistor. 4. A transistor, MOS-type field effect transistor and the power supply device 3 any one according to claims 1, characterized in that any one of the IGBT. 5. A full-wave rectifier and the output of this full-wave rectifier
It smoothes and N-channel transformer of the inverter circuit.
A series circuit of transistors and P-channel transistors
Smoothing capacitors connected to the column and this smoothing capacitor
Inverter circuit with start-up resistor connected to one end of
N-channel transistor and P-channel transistor
JP by comprising a starting circuit for applying a voltage to the register
The power supply device according to claim 1, wherein the power supply device is a characteristic. 6. The starting circuit is directly connected to the capacitor of the resonance circuit.
The gates of the N-channel transistors connected in series and
The voltage applied to the gate of the P-channel transistor is
6. A capacitor according to claim 1, further comprising a capacitor.
The power supply device described in one of the above. Fluorescent lamp device being characterized in that comprising a; 7. claims 1 to a power supply device 6 according to any one described; and fluorescent lamps are turned on by the power supply. 8. A substrate having a mouthpiece; characterized by including a; and a power supply device of claims 1 is accommodated in the base body 6 to any one described; and fluorescent lamp is lit by an inverter attached to the base body And fluorescent lamp device. 9. The fluorescent lamp device according to claim 8 , further comprising a globe which is attached to the base body and has a substantially bulb-like shape together with the base body. Lighting apparatus characterized by comprising a; 10. A fluorescent lamp device according to any one claim 7-9; and the instrument body fluorescent lamp device is attached.