JPH09260075A - Discharging lamp lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the influence of noise to the controller and to improve the productivity at the time of assembly of lighting fixture to reduce the number of parts and the labor. SOLUTION: This device comprises at least one power supply 3 outputting direct current voltage, a plurality of inverters 1, 2, connected to the power supply 3, each having at least one switching circuit 1c, 2a, for generating high frequency voltage, controllers 5, 6 for on-off control the switching circuit 1c, 2a, and a power circuit 11 for applying the output of the inverter 1, 2 to the discharging lamp, which device is mounted on an annular printed circuit board 7 having a pass-through hole at the center for performing high frequency lighting of a discharging lamp. The plurality of inverters 1, 2 are mounted separated to both side of the output circuit 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge lamp lighting device, and more particularly to a discharge lamp lighting device having a plurality of inverter units for lighting a discharge lamp at a high frequency.

[0002]

2. Description of the Related Art FIG. 1 shows an example of a circuit diagram of a discharge lamp lighting device. This discharge lamp lighting device includes three types of discharge lamps (for example, 40W, 32W, 30W round fluorescent lamps). Two inverter circuit units 1 and 2 for lighting at high frequency and their power supply circuit units 3 and 4,
And control units 5 and 6. Hereinafter, this circuit configuration will be described in detail with reference to the drawings.

The inverter circuit unit 1 is connected to the power supply circuit unit 3 and comprises two inverter units 1a and 1b called half-bridge type inverters, which are controlled by the control unit 5 so that the inverter units 1a and 1b are respectively released. Electric light La
1, La2 (for example, 40 W and 32 W round fluorescent lamps) are turned on. The inverter unit 1a is configured to include a switching circuit unit 1c and an LC resonance circuit unit 1d, and the inverter unit 1b is configured to include a switching circuit unit 1e and an LC circuit.
Since the two inverter units 1a and 1b have the same circuit configuration as the discharge lamps La1 and La2, respectively, the resonance circuit unit 1f is provided, and therefore the circuit configuration will be described by using the discharge lamp La1 as a representative. .

The power supply circuit section 3 is connected to a commercial power supply AC, and the commercial power supply AC is connected to filter chokes CF1 and CF2.
And diode bridge DB1 via capacitor C1
Is rectified by the smoothing capacitor C2 and the output thereof is smoothed by the smoothing capacitor C2 to obtain a DC power supply. The inverter unit 1a includes a switching circuit unit 1c having two switching elements Q1 and Q2, and an LC resonance circuit unit 1d having an inductor L1 and capacitors C5, C6, C7, and C8.
And the capacitor C8 connected to the non-switching circuit portion side of the discharge lamp La1 is
Plays a role of supplying a preheating current to. Then, the two switching elements Q1 and Q2 of the switching circuit section 1c are controlled to be turned on and off by the control section 5 including a microcomputer.

The inverter section 1b has the same structure as the inverter section 1a as described above, and the switching circuit section 1e is composed of two switching elements Q3 and Q4.
And inductor L2 and capacitors C9, C10, C1
And an LC resonance circuit section 1f having C12 and
The operation is similar to that of the inverter unit 1a.

In the figure, a power transformer T1 connected to a commercial power source AC, a diode bridge DB3,
The circuit configured by the diode D1 and the capacitor C13 represents a control power supply unit that supplies power to the control unit 5.

The inverter circuit section 2 is called a one-stone inverter and is connected to the power supply circuit section 4 and controlled by the control section 6 so that one discharge lamp La3 (for example, 30).
The W circular fluorescent lamp is turned on, and includes a switching circuit section 2a and an LC resonance circuit section 2b.

The power supply circuit section 4 is connected to a commercial power supply AC, rectifies the commercial power supply AC by a diode bridge DB2 via a filter choke CF3, and smoothes its output by a smoothing capacitor C14 to obtain a DC power supply. ing. The switching circuit unit 2a that constitutes the inverter circuit unit 2 includes one switching element Q5, and the LC resonance circuit unit 2b includes the inductor L.
3, L4, and an LC resonance circuit section 2b having capacitors C15, C16, C17, and a capacitor C17 connected to the non-switching circuit section side of the discharge lamp La3 supplies a preheating current to the discharge lamp La3. Play a role. In the figure, the circuit composed of the constant voltage diode ZD1, the current limiting resistor R1, and the capacitor C18 is a control unit 6 that includes a microcomputer and controls the switching element Q5 of the switching circuit unit 2a to be turned on and off. 3 illustrates a control power supply unit that supplies power.

The discharge lamp lighting device configured as described above is
As shown in FIG. 2, conventionally, an inverter circuit unit 1, a power supply circuit unit 3 and a control unit 5 thereof are formed in a substantially I-shape on a first C-shaped first substrate 7a which is a printed wiring board 7. The inverter circuit unit 2, the power supply circuit unit 4, and the control unit 6 are mounted on the second substrate 7b which is arranged so as to substantially abut on the substantially C-shaped tip side of the first substrate 7a, and the space between them is It is configured to be electrically connected.

That is, on the first substrate 7a, the switching circuit section 1c, which is the two inverter sections 1a and 1b of the power circuit section 3, the control section 5, and the inverter circuit section 1, from the one end side of the substantially C-shape, 1e and LC resonance circuit sections 1d and 1f
Are sequentially mounted toward the other end side, and the second substrate 7
The power supply circuit unit 4, the control unit 6, the switching circuit unit 2a that is the inverter circuit unit 2, and the LC resonance circuit unit 2b are mounted on the side b from the one end side to the other end side. A power supply connector 8 for connecting a commercial power source to the power supply circuit unit 3 is provided on the power supply circuit unit 3 side on one end side of the first substrate 7a, and a power supply circuit unit provided on the second substrate 7b. A feed wire 10 is connected to the power connector connector 9 for connecting a commercial power source to the connector 4. Further, in the vicinity of the other end side of the first substrate 7a, a plurality of output parts 11 which are connecting parts of the discharge lamps La1, La2, La3 such as a lamp connector and the inverter circuit parts 1, 2 are provided. The output power of each LC resonance circuit section 1d, 1f, 2b is supplied to the discharge lamps La1, La2, La3. Therefore, on the other end side of the first substrate 7a,
An output connector 12 connected to the output unit 11 is provided,
The second board 7b is connected to the output connector connecting portion 13 provided on the other end side via the feed wiring 14.

The discharge lamp lighting device thus constructed is used by being incorporated in a pendant type lighting fixture using a plurality of round fluorescent lamps, a ceiling-mounted lighting fixture, or the like.

[0012]

However, in the conventional discharge lamp lighting device configured as described above, the printed wiring board 7 on which the plurality of two inverter circuit units 1 and 2 are mounted is the first substrate. 7a and the second substrate 7b, the workability at the time of assembling the lighting fixture is poor, and the divided first substrate 7a and second substrate 7 are separated.
There is a problem in that the number of parts and the number of assembling steps increase due to the feed wirings 10 and 12 between b, which causes a cost increase.

In order to solve the above problems, it is possible to mount the two inverter circuit units 1 and 2 on one printed wiring board. However, a plurality of inverter circuit units 1 and 2 are mounted. When each is mounted close to each other,
Due to mutual interference between the inverter circuit units 1 and 2, for example, radiation noise of a specific frequency may be amplified and the control units 5 and 6 may malfunction.

The present invention has been made in view of the above problems, and an object of the present invention is to suppress the influence of noise on the control unit and to improve the workability in assembling the lighting fixture, and to reduce the number of parts and the number of parts. An object of the present invention is to provide a discharge lamp lighting device with reduced assembly man-hours.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a power supply circuit section 3 for outputting a DC voltage, and at least one power supply circuit section 3 for outputting a DC voltage. 3, a plurality of inverter circuit units 1 and 2 each having at least one switching circuit unit 1c, 2a for generating a high frequency voltage, and a control unit 5 for controlling ON / OFF of the switching circuit unit 1c, 2a. , 6
And an output unit 11 for applying the outputs of the inverter circuit units 1 and 2 to a discharge lamp, which is mounted on a substantially annular printed wiring board 7 having a through hole 7c at the substantially center thereof, and the discharge lamp is operated at a high frequency. A discharge lamp lighting device for lighting, wherein the plurality of inverter circuit units 1 and 2 are mounted separately on both sides with the output unit 11 as a boundary.

According to the invention of claim 2, claim 1
In the discharge lamp lighting device described above, the power supply circuit unit 3 includes:
The printed wiring board 7 is mounted so as to substantially face the output portion 11 through the through hole 7c.

According to a third aspect of the present invention, in the discharge lamp lighting device according to the first or second aspect, the power supply circuit section 3 connected to the inverter circuit sections 1 and 2 is used.
Is shared by the plurality of inverter circuit units 1 and 2.

According to a fourth aspect of the invention, in the discharge lamp lighting device according to one of the first to third aspects, the power circuit section 3 is on the printed wiring board 7. A signal connector section 16 of a remote control receiving section 15 for receiving a remote control signal from the outside and transmitting it to the control sections 5 and 6 is provided in the vicinity of, and the remote control receiving section 15 is placed close to the power supply circuit section 3. The remote control receiving unit 15 receives the remote control signal to control the lighting of the discharge lamp.

According to a fifth aspect of the present invention, in the discharge lamp lighting device according to one of the first to third aspects, the power circuit section 3 is on the printed wiring board 7. A signal connector section 16 of a remote control receiving section 15 for receiving a remote control signal from the outside and transmitting it to the control sections 5 and 6 is provided in the vicinity of, and the remote control receiving section 15 is provided in the vicinity of the output section. Then, the lighting of the discharge lamp is controlled by a remote control signal received by the remote control receiving unit 15.

[0020]

FIG. 1 shows a first embodiment of a discharge lamp lighting device according to the present invention, and its circuit configuration is shown in FIG.
Since it is the same as the discharge lamp lighting device shown in FIG. 1, the mounting structure on the printed wiring board 7 will be described in detail below.

The printed wiring board 7 on which the discharge lamp lighting device is mounted has a through hole 7c in the center thereof and is formed in a substantially annular shape. Such a printed wiring board 7 has a shape such that a bendant type lighting fixture for a round fluorescent lamp in which a discharge lamp lighting device is incorporated, a ceiling-mounted lighting fixture, or the like is connected to a commercial power source from a substantially central portion of the lighting fixture. Since such a structure is obtained, the through hole 7c is formed in the substantially central portion in order to avoid the commercial power supply lead-in portion.

Power supply connectors 8 connected to a commercial power supply and high frequency powers of a plurality of two inverter circuit units 1 and 2 are respectively provided at positions facing each other through the through holes 7c of the printed wiring board 7. Discharge lamp La1, La2, La
Lamp holders (not shown) for supplying to 3
An output unit 11 having is provided. The two inverter units 1a and 1b are provided on one side of the line connecting the power connector 8 and the output unit 11 on the printed wiring board 7.
One of the inverter circuit section 1 and the power supply circuit section 3 and the control section 5 thereof are mounted, and the other inverter circuit section 2, the power supply circuit section 4 and the control section 6 are mounted on the other side. The two power supply circuit units 3 and 4 connected to the power supply connector 8 are mounted near the power supply connector 8 on both sides of the line connecting the power supply connector 8 and the output unit 11.

That is, the control unit 5 is mounted on one side of the printed wiring board 7 so as to be adjacent to the power supply circuit unit 3, and the discharge lamp La is provided between the control unit 5 and the output unit 11.
1, La2, for example, two inverter units 1 of an inverter circuit unit 1 for lighting a 40W, 32W round fluorescent lamp
a and 1b are switching circuit units 1c and 1e, and LC
The resonant circuit units 1d and 1f are sequentially mounted toward the output unit 11 side. A control unit 6 is mounted on the other side of the printed wiring board 7 so as to be adjacent to the power supply circuit unit 4, and a discharge lamp La3 is provided between the control unit 6 and the output unit 11.
For example, the switching circuit section 2a of the inverter circuit section 2 for lighting the 30W round fluorescent lamp and the LC resonance circuit section 2b are sequentially mounted toward the output section 11 side.

Therefore, the plurality of two inverter circuit units 1 and 2 are provided on the printed wiring board 7 and the output unit 11 is provided.
It is mounted so as to be divided on both sides with the LC resonance circuit section 1d, 1d close to the output section 11.
f and 2b, and the respective switching circuit sections 1c,
1e and 2a are mounted and arranged so as to substantially face each other through the through hole 7c of the printed wiring board 7.

Since the discharge lamp lighting device according to the present embodiment is constructed in this manner, the printed wiring board 7 is only one piece, so that the assembling workability in assembling it into the lighting fixture is good, and it is different. Since it is not necessary to perform feed wiring using parts, the number of parts required for this purpose can be reduced, and the number of assembling steps can be reduced to achieve cost reduction. Further, since there is only one printed wiring board 7, it is possible to secure a large area for mounting components on the printed wiring board 7, and the plurality of inverter circuit units 1 and 2 are connected to the output unit 1.
Since the parts are mounted separately on both sides of the boundary 1, the heat-generating parts can be arranged in a divided manner to suppress the temperature rise of the parts and suppress the radiation noise due to the mutual interference between the inverter circuit parts 1 and 2. The malfunction of 5 and 6 can be prevented.

2 and 3 show a second embodiment of the discharge lamp lighting device according to the present invention. The difference from the first embodiment is that a plurality of inverter circuit parts 1 and 2 are provided. The power supply circuit section 3 is one and shared by both the inverter circuit sections 1 and 2, and the power supply circuit section 3 is provided in the vicinity of the power supply connector 8 on the printed wiring board, and the output section 11 and the power supply connector 8 are provided. They are mounted and arranged so as to be located on the line connecting the and, and the other points are configured similarly to the first embodiment. Even with this configuration, the same effect as that of the first embodiment is obtained, and since the power supply circuit section 3 is shared by the plurality of inverter circuit sections 1 and 2, the number of parts is further reduced. It is possible to reduce the cost and further reduce the cost.

4 to 6 show a third embodiment of the discharge lamp lighting device according to the present invention. The difference from the second embodiment is that the discharge lamp lighting device includes a remote controller. (Hereinafter referred to as a remote control), discharge lamp La1,
La2 and La3 are provided with a function of performing remote control such as lighting, extinguishing, and dimming, and the other configurations are the same as those of the second embodiment.

That is, a signal connector section 16 connected to the control sections 5 and 6 is provided in the vicinity of the power circuit section 3 of the printed wiring board 7, and the signal line 1 is connected to the signal connector section 16.
A remote control receiver 15 for receiving a remote control signal via 7.
Is provided. The remote control receiving unit 15 includes a signal receiving unit that receives a remote control signal such as infrared rays that is transmitted wirelessly, and a signal conversion unit that converts the remote control signal into an electric signal and transmits the electric signal to the control units 5 and 6. The through hole 7c of the printed wiring board 7 in a state of being provided and incorporated in a lighting fixture.
On the other hand, it is arranged near the power supply circuit section 3. In addition,
In the figure, 11a indicates a lamp holder electrically connected to the output unit 11, and 18 indicates a lamp supporting spring.

With this configuration, the discharge lamp lighting device according to the present embodiment has the same effects as the discharge lamp lighting device according to the second embodiment, and the remote control receiver 15 supplies the power. By being located near the circuit unit 3 and away from the inverter circuit units 1 and 2, the remote controller receiving unit 15 is set to the inverter circuit units 1 and 1.
It becomes difficult to be affected by the radiation noise from 2 and it is possible to prevent malfunction or malfunction.

7 and 8 show a fourth embodiment of the discharge lamp lighting device according to the present invention. The difference from the third embodiment is that the remote control receiver 15 is connected to the discharge lamp. In the state where the lighting device is incorporated in the lighting fixture, it is arranged in the vicinity of the lamp holder 11a which is the output unit 11 with respect to the through hole 7c of the printed wiring board 7, and the other points are the same as those of the third embodiment. It is similarly configured.

Even with this structure, the same effects as those of the discharge lamp lighting device according to the third embodiment can be obtained, and the remote control receiver 15 becomes the shadow of the lamp holder 11a and discharge lamps La1 and La2. , La3 is less likely to be affected by the optical noise, and the malfunction or malfunction of the remote controller can be further prevented.

In each of the above embodiments, as the discharge lamp lighting device, a plurality of inverter circuit units are formed into two inverter circuit units 1 and 2, which are respectively provided with two inverter units 1a and 1b. Although the description has been given by exemplifying the one that is the inverter circuit unit 1 for a lamp and the inverter circuit unit 2 for one lamp, the present invention is not limited to this, and the number of inverter circuit units is two or more. Each inverter circuit section may be provided with one or more inverter sections, respectively, and may be formed for one lamp, two lamps, three lamps, etc., and the circuit configuration is also one stone. The present invention is not limited to the type inverter and the half-bridge type inverter, and any other type may be used.

[0033]

Since the present invention is constructed in this manner, the invention according to claims 1 and 2 has only one printed wiring board, and therefore is assembled when it is incorporated into a lighting fixture. The workability is good, and since it is not necessary to perform the feed wiring by using a separate part, the number of parts required for this purpose can be reduced, and the number of assembling steps can be reduced to reduce the cost. Further, since there is only one printed wiring board, it is possible to secure a large area for mounting components on the printed wiring board, and a plurality of inverter circuit parts are mounted separately on both sides with the output part as a boundary. It is possible to suppress the temperature rise of the parts by arranging the heat-generating components in a divided manner, and suppress the radiation noise due to the mutual interference of the respective inverter circuit parts, thereby preventing the malfunction of the control part.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, since the power supply circuit section is shared by a plurality of inverter circuit sections, The number of parts can be further reduced, and the cost can be further reduced.

According to the invention of claim 4, claim 1
In addition to the effect of the invention described in one of claims 3 to 3, the remote controller receiver is located near the power supply circuit part and apart from the inverter circuit part, so that the remote controller receiver part is an inverter circuit. It becomes difficult to be affected by the radiation noise from the parts, and it is possible to prevent malfunction or malfunction.

According to the invention of claim 5, claim 1
In addition to the effect of the invention described in one of claims 3 to 3, the remote control receiver becomes a shadow of the lamp holder and is less likely to be affected by optical noise from the discharge lamp. And malfunction can be further prevented.

[Brief description of drawings]

FIG. 1 shows a first embodiment of a discharge lamp lighting device of the present invention, and is a schematic view showing a mounting arrangement.

FIG. 2 is a circuit diagram showing a second embodiment of a discharge lamp lighting device of the present invention.

FIG. 3 is a schematic diagram showing a mounting arrangement of the same.

FIG. 4 is a circuit diagram showing a third embodiment of a discharge lamp lighting device of the present invention.

FIG. 5 is a schematic view showing a mounting arrangement of the same.

FIG. 6 shows a main part of a state in which the above discharge lamp lighting device is incorporated in a lighting fixture, (a) is a side view, and (b) is a bottom view.

FIG. 7 shows a fourth embodiment of the discharge lamp lighting device of the present invention, and is a schematic view showing a mounting arrangement.

FIG. 8 shows a main part of a state in which the above discharge lamp lighting device is incorporated in a lighting fixture, (a) is a side view and (b) is a bottom view.

FIG. 9 is a circuit diagram showing an example of a discharge lamp lighting device.

FIG. 10 is a schematic view showing a mounting arrangement of a conventional discharge lamp lighting device.

[Explanation of symbols]

 1, 2 inverter circuit section 1c, 1e, 2a switching circuit section 3,4 power supply circuit section 5,6 control section 7 printed wiring board 7c through hole 11 output section 15 remote control receiving section 16 signal connector section

Claims (5)

[Claims] 1. At least one power supply circuit section for outputting a DC voltage, and a plurality of inverter circuit sections each having at least one switching circuit section connected to the power supply circuit section for generating a high frequency voltage, And a control unit that controls the switching circuit unit to turn on and off, and an output unit that applies the output of the inverter circuit unit to a discharge lamp.
A discharge lamp lighting device which is mounted on a substantially annular printed wiring board having a through hole at substantially the center thereof to light the discharge lamp at a high frequency, wherein the plurality of inverter circuit parts are provided on both sides of the output part as a boundary. A discharge lamp lighting device characterized by being mounted separately. 2. The discharge lamp lighting device according to claim 1, wherein the power supply circuit section is mounted so as to substantially face the output section through a through hole of the printed wiring board. 3. The discharge lamp lighting device according to claim 1, wherein a power supply circuit unit connected to the inverter circuit unit is shared by the plurality of inverter circuit units. 4. A remote control signal receiving section for receiving a remote control signal from the outside and transmitting the remote control signal to the control section on the printed wiring board and in the vicinity of the power supply circuit section. 4. The receiving unit is arranged close to the power supply circuit unit, and the lighting of the discharge lamp is controlled by a remote control signal received by the remote control receiving unit. A discharge lamp lighting device according to one of the claims. 5. A signal connector section of a remote control receiving section for receiving a remote control signal from the outside and transmitting it to the control section is provided on the printed wiring board and in the vicinity of the power supply circuit section, and the remote controller is provided. 4. The receiving unit is arranged close to the output unit, and lighting of the discharge lamp is controlled by a remote control signal received by the remote control receiving unit. Discharge lamp lighting device according to one of the claims.